diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/snow.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/snow.c | 4706 |
1 files changed, 4706 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/snow.c b/contrib/ffmpeg/libavcodec/snow.c new file mode 100644 index 000000000..dc50941fa --- /dev/null +++ b/contrib/ffmpeg/libavcodec/snow.c @@ -0,0 +1,4706 @@ +/* + * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "avcodec.h" +#include "common.h" +#include "dsputil.h" +#include "snow.h" + +#include "rangecoder.h" + +#include "mpegvideo.h" + +#undef NDEBUG +#include <assert.h> + +static const int8_t quant3[256]={ + 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 0, +}; +static const int8_t quant3b[256]={ + 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, +}; +static const int8_t quant3bA[256]={ + 0, 0, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, + 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, +}; +static const int8_t quant5[256]={ + 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,-1, +}; +static const int8_t quant7[256]={ + 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, +-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, +-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, +-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, +-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, +-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, +-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, +-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1, +}; +static const int8_t quant9[256]={ + 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, +-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, +-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, +-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, +-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, +-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, +-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, +-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3, +-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-1,-1, +}; +static const int8_t quant11[256]={ + 0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, +-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, +-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, +-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, +-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, +-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, +-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-4,-4, +-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, +-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-1, +}; +static const int8_t quant13[256]={ + 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, +-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, +-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, +-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, +-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, +-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-5, +-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, +-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, +-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1, +}; + +#if 0 //64*cubic +static const uint8_t obmc32[1024]={ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, + 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, + 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 7, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 4, 3, 2, 2, 1, 1, 0, 0, + 0, 0, 1, 2, 2, 3, 4, 6, 7, 8, 9,10,11,12,12,12,12,12,12,11,10, 9, 8, 7, 6, 4, 3, 2, 2, 1, 0, 0, + 0, 1, 1, 2, 3, 5, 6, 8,10,11,13,14,15,16,17,18,18,17,16,15,14,13,11,10, 8, 6, 5, 3, 2, 1, 1, 0, + 0, 1, 1, 3, 4, 6, 8,10,13,15,17,19,20,22,22,23,23,22,22,20,19,17,15,13,10, 8, 6, 4, 3, 1, 1, 0, + 0, 1, 2, 4, 6, 8,10,13,16,19,21,23,25,27,28,29,29,28,27,25,23,21,19,16,13,10, 8, 6, 4, 2, 1, 0, + 0, 1, 2, 4, 7,10,13,16,19,22,25,28,31,33,34,35,35,34,33,31,28,25,22,19,16,13,10, 7, 4, 2, 1, 0, + 0, 1, 3, 5, 8,11,15,19,22,26,30,33,36,38,40,41,41,40,38,36,33,30,26,22,19,15,11, 8, 5, 3, 1, 0, + 0, 1, 3, 6, 9,12,17,21,25,30,34,38,41,44,45,46,46,45,44,41,38,34,30,25,21,17,12, 9, 6, 3, 1, 0, + 0, 1, 3, 6,10,14,19,23,28,33,38,42,45,48,51,52,52,51,48,45,42,38,33,28,23,19,14,10, 6, 3, 1, 0, + 0, 1, 4, 7,11,15,20,25,31,36,41,45,49,52,55,56,56,55,52,49,45,41,36,31,25,20,15,11, 7, 4, 1, 0, + 0, 2, 4, 7,12,16,22,27,33,38,44,48,52,56,58,60,60,58,56,52,48,44,38,33,27,22,16,12, 7, 4, 2, 0, + 0, 1, 4, 8,12,17,22,28,34,40,45,51,55,58,61,62,62,61,58,55,51,45,40,34,28,22,17,12, 8, 4, 1, 0, + 0, 2, 4, 8,12,18,23,29,35,41,46,52,56,60,62,64,64,62,60,56,52,46,41,35,29,23,18,12, 8, 4, 2, 0, + 0, 2, 4, 8,12,18,23,29,35,41,46,52,56,60,62,64,64,62,60,56,52,46,41,35,29,23,18,12, 8, 4, 2, 0, + 0, 1, 4, 8,12,17,22,28,34,40,45,51,55,58,61,62,62,61,58,55,51,45,40,34,28,22,17,12, 8, 4, 1, 0, + 0, 2, 4, 7,12,16,22,27,33,38,44,48,52,56,58,60,60,58,56,52,48,44,38,33,27,22,16,12, 7, 4, 2, 0, + 0, 1, 4, 7,11,15,20,25,31,36,41,45,49,52,55,56,56,55,52,49,45,41,36,31,25,20,15,11, 7, 4, 1, 0, + 0, 1, 3, 6,10,14,19,23,28,33,38,42,45,48,51,52,52,51,48,45,42,38,33,28,23,19,14,10, 6, 3, 1, 0, + 0, 1, 3, 6, 9,12,17,21,25,30,34,38,41,44,45,46,46,45,44,41,38,34,30,25,21,17,12, 9, 6, 3, 1, 0, + 0, 1, 3, 5, 8,11,15,19,22,26,30,33,36,38,40,41,41,40,38,36,33,30,26,22,19,15,11, 8, 5, 3, 1, 0, + 0, 1, 2, 4, 7,10,13,16,19,22,25,28,31,33,34,35,35,34,33,31,28,25,22,19,16,13,10, 7, 4, 2, 1, 0, + 0, 1, 2, 4, 6, 8,10,13,16,19,21,23,25,27,28,29,29,28,27,25,23,21,19,16,13,10, 8, 6, 4, 2, 1, 0, + 0, 1, 1, 3, 4, 6, 8,10,13,15,17,19,20,22,22,23,23,22,22,20,19,17,15,13,10, 8, 6, 4, 3, 1, 1, 0, + 0, 1, 1, 2, 3, 5, 6, 8,10,11,13,14,15,16,17,18,18,17,16,15,14,13,11,10, 8, 6, 5, 3, 2, 1, 1, 0, + 0, 0, 1, 2, 2, 3, 4, 6, 7, 8, 9,10,11,12,12,12,12,12,12,11,10, 9, 8, 7, 6, 4, 3, 2, 2, 1, 0, 0, + 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 7, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 4, 3, 2, 2, 1, 1, 0, 0, + 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, + 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, +//error:0.000022 +}; +static const uint8_t obmc16[256]={ + 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, + 0, 1, 1, 2, 4, 5, 5, 6, 6, 5, 5, 4, 2, 1, 1, 0, + 0, 1, 4, 6, 9,11,13,15,15,13,11, 9, 6, 4, 1, 0, + 0, 2, 6,11,15,20,24,26,26,24,20,15,11, 6, 2, 0, + 0, 4, 9,15,23,29,34,38,38,34,29,23,15, 9, 4, 0, + 0, 5,11,20,29,38,45,49,49,45,38,29,20,11, 5, 0, + 1, 5,13,24,34,45,53,57,57,53,45,34,24,13, 5, 1, + 1, 6,15,26,38,49,57,62,62,57,49,38,26,15, 6, 1, + 1, 6,15,26,38,49,57,62,62,57,49,38,26,15, 6, 1, + 1, 5,13,24,34,45,53,57,57,53,45,34,24,13, 5, 1, + 0, 5,11,20,29,38,45,49,49,45,38,29,20,11, 5, 0, + 0, 4, 9,15,23,29,34,38,38,34,29,23,15, 9, 4, 0, + 0, 2, 6,11,15,20,24,26,26,24,20,15,11, 6, 2, 0, + 0, 1, 4, 6, 9,11,13,15,15,13,11, 9, 6, 4, 1, 0, + 0, 1, 1, 2, 4, 5, 5, 6, 6, 5, 5, 4, 2, 1, 1, 0, + 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, +//error:0.000033 +}; +#elif 1 // 64*linear +static const uint8_t obmc32[1024]={ + 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, + 0, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12, 8, 8, 8, 4, 4, 4, 0, + 0, 4, 8, 8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12, 8, 8, 4, 0, + 0, 4, 8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12, 8, 4, 0, + 4, 8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12, 8, 4, + 4, 8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12, 8, 4, + 4, 8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16, 8, 4, + 4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12, 4, + 4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12, 4, + 4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16, 4, + 4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16, 4, + 4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16, 4, + 8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20, 8, + 8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20, 8, + 8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20, 8, + 8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24, 8, + 8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24, 8, + 8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20, 8, + 8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20, 8, + 8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20, 8, + 4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16, 4, + 4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16, 4, + 4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16, 4, + 4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12, 4, + 4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12, 4, + 4, 8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16, 8, 4, + 4, 8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12, 8, 4, + 4, 8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12, 8, 4, + 0, 4, 8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12, 8, 4, 0, + 0, 4, 8, 8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12, 8, 8, 4, 0, + 0, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12, 8, 8, 8, 4, 4, 4, 0, + 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, + //error:0.000020 +}; +static const uint8_t obmc16[256]={ + 0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0, + 4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4, + 4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4, + 8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8, + 8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8, + 12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12, + 12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12, + 16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16, + 16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16, + 12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12, + 12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12, + 8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8, + 8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8, + 4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4, + 4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4, + 0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0, +//error:0.000015 +}; +#else //64*cos +static const uint8_t obmc32[1024]={ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, + 0, 0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0, + 0, 0, 1, 1, 2, 3, 4, 5, 6, 7, 9,10,11,11,12,12,12,12,11,11,10, 9, 7, 6, 5, 4, 3, 2, 1, 1, 0, 0, + 0, 0, 1, 2, 3, 5, 6, 8, 9,11,12,14,15,16,17,17,17,17,16,15,14,12,11, 9, 8, 6, 5, 3, 2, 1, 0, 0, + 0, 1, 1, 2, 4, 6, 8,10,12,15,17,19,20,21,22,23,23,22,21,20,19,17,15,12,10, 8, 6, 4, 2, 1, 1, 0, + 0, 1, 2, 3, 5, 8,10,13,16,19,21,24,26,27,28,29,29,28,27,26,24,21,19,16,13,10, 8, 5, 3, 2, 1, 0, + 0, 1, 2, 4, 6, 9,12,16,19,23,26,29,31,33,34,35,35,34,33,31,29,26,23,19,16,12, 9, 6, 4, 2, 1, 0, + 0, 1, 3, 5, 7,11,15,19,23,26,30,34,37,39,40,41,41,40,39,37,34,30,26,23,19,15,11, 7, 5, 3, 1, 0, + 0, 1, 3, 5, 9,12,17,21,26,30,35,38,42,44,46,47,47,46,44,42,38,35,30,26,21,17,12, 9, 5, 3, 1, 0, + 0, 1, 3, 6, 9,14,19,24,29,34,38,43,46,49,51,52,52,51,49,46,43,38,34,29,24,19,14, 9, 6, 3, 1, 0, + 0, 1, 3, 6,11,15,20,26,31,37,42,46,50,53,56,57,57,56,53,50,46,42,37,31,26,20,15,11, 6, 3, 1, 0, + 0, 1, 3, 7,11,16,21,27,33,39,44,49,53,57,59,60,60,59,57,53,49,44,39,33,27,21,16,11, 7, 3, 1, 0, + 0, 1, 4, 7,12,17,22,28,34,40,46,51,56,59,61,63,63,61,59,56,51,46,40,34,28,22,17,12, 7, 4, 1, 0, + 0, 1, 4, 7,12,17,23,29,35,41,47,52,57,60,63,64,64,63,60,57,52,47,41,35,29,23,17,12, 7, 4, 1, 0, + 0, 1, 4, 7,12,17,23,29,35,41,47,52,57,60,63,64,64,63,60,57,52,47,41,35,29,23,17,12, 7, 4, 1, 0, + 0, 1, 4, 7,12,17,22,28,34,40,46,51,56,59,61,63,63,61,59,56,51,46,40,34,28,22,17,12, 7, 4, 1, 0, + 0, 1, 3, 7,11,16,21,27,33,39,44,49,53,57,59,60,60,59,57,53,49,44,39,33,27,21,16,11, 7, 3, 1, 0, + 0, 1, 3, 6,11,15,20,26,31,37,42,46,50,53,56,57,57,56,53,50,46,42,37,31,26,20,15,11, 6, 3, 1, 0, + 0, 1, 3, 6, 9,14,19,24,29,34,38,43,46,49,51,52,52,51,49,46,43,38,34,29,24,19,14, 9, 6, 3, 1, 0, + 0, 1, 3, 5, 9,12,17,21,26,30,35,38,42,44,46,47,47,46,44,42,38,35,30,26,21,17,12, 9, 5, 3, 1, 0, + 0, 1, 3, 5, 7,11,15,19,23,26,30,34,37,39,40,41,41,40,39,37,34,30,26,23,19,15,11, 7, 5, 3, 1, 0, + 0, 1, 2, 4, 6, 9,12,16,19,23,26,29,31,33,34,35,35,34,33,31,29,26,23,19,16,12, 9, 6, 4, 2, 1, 0, + 0, 1, 2, 3, 5, 8,10,13,16,19,21,24,26,27,28,29,29,28,27,26,24,21,19,16,13,10, 8, 5, 3, 2, 1, 0, + 0, 1, 1, 2, 4, 6, 8,10,12,15,17,19,20,21,22,23,23,22,21,20,19,17,15,12,10, 8, 6, 4, 2, 1, 1, 0, + 0, 0, 1, 2, 3, 5, 6, 8, 9,11,12,14,15,16,17,17,17,17,16,15,14,12,11, 9, 8, 6, 5, 3, 2, 1, 0, 0, + 0, 0, 1, 1, 2, 3, 4, 5, 6, 7, 9,10,11,11,12,12,12,12,11,11,10, 9, 7, 6, 5, 4, 3, 2, 1, 1, 0, 0, + 0, 0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0, + 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, +//error:0.000022 +}; +static const uint8_t obmc16[256]={ + 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, + 0, 0, 1, 2, 3, 4, 5, 5, 5, 5, 4, 3, 2, 1, 0, 0, + 0, 1, 3, 6, 8,11,13,14,14,13,11, 8, 6, 3, 1, 0, + 0, 2, 6,10,15,20,24,26,26,24,20,15,10, 6, 2, 0, + 0, 3, 8,16,23,30,35,38,38,35,30,23,16, 8, 3, 0, + 1, 4,11,20,30,39,46,49,49,46,39,30,20,11, 4, 1, + 1, 5,13,24,35,46,54,58,58,54,46,35,24,13, 5, 1, + 0, 5,14,26,38,49,58,63,63,58,49,38,26,14, 5, 0, + 0, 5,14,26,38,49,58,63,63,58,49,38,26,14, 5, 0, + 1, 5,13,24,35,46,54,58,58,54,46,35,24,13, 5, 1, + 1, 4,11,20,30,39,46,49,49,46,39,30,20,11, 4, 1, + 0, 3, 8,16,23,30,35,38,38,35,30,23,16, 8, 3, 0, + 0, 2, 6,10,15,20,24,26,26,24,20,15,10, 6, 2, 0, + 0, 1, 3, 6, 8,11,13,14,14,13,11, 8, 6, 3, 1, 0, + 0, 0, 1, 2, 3, 4, 5, 5, 5, 5, 4, 3, 2, 1, 0, 0, + 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, +//error:0.000022 +}; +#endif + +//linear *64 +static const uint8_t obmc8[64]={ + 4, 12, 20, 28, 28, 20, 12, 4, + 12, 36, 60, 84, 84, 60, 36, 12, + 20, 60,100,140,140,100, 60, 20, + 28, 84,140,196,196,140, 84, 28, + 28, 84,140,196,196,140, 84, 28, + 20, 60,100,140,140,100, 60, 20, + 12, 36, 60, 84, 84, 60, 36, 12, + 4, 12, 20, 28, 28, 20, 12, 4, +//error:0.000000 +}; + +//linear *64 +static const uint8_t obmc4[16]={ + 16, 48, 48, 16, + 48,144,144, 48, + 48,144,144, 48, + 16, 48, 48, 16, +//error:0.000000 +}; + +static const uint8_t *obmc_tab[4]={ + obmc32, obmc16, obmc8, obmc4 +}; + +static int scale_mv_ref[MAX_REF_FRAMES][MAX_REF_FRAMES]; + +typedef struct BlockNode{ + int16_t mx; + int16_t my; + uint8_t ref; + uint8_t color[3]; + uint8_t type; +//#define TYPE_SPLIT 1 +#define BLOCK_INTRA 1 +#define BLOCK_OPT 2 +//#define TYPE_NOCOLOR 4 + uint8_t level; //FIXME merge into type? +}BlockNode; + +static const BlockNode null_block= { //FIXME add border maybe + .color= {128,128,128}, + .mx= 0, + .my= 0, + .ref= 0, + .type= 0, + .level= 0, +}; + +#define LOG2_MB_SIZE 4 +#define MB_SIZE (1<<LOG2_MB_SIZE) + +typedef struct x_and_coeff{ + int16_t x; + uint16_t coeff; +} x_and_coeff; + +typedef struct SubBand{ + int level; + int stride; + int width; + int height; + int qlog; ///< log(qscale)/log[2^(1/6)] + DWTELEM *buf; + int buf_x_offset; + int buf_y_offset; + int stride_line; ///< Stride measured in lines, not pixels. + x_and_coeff * x_coeff; + struct SubBand *parent; + uint8_t state[/*7*2*/ 7 + 512][32]; +}SubBand; + +typedef struct Plane{ + int width; + int height; + SubBand band[MAX_DECOMPOSITIONS][4]; +}Plane; + +typedef struct SnowContext{ +// MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to make the motion estimation eventually independent of MpegEncContext, so this will be removed then (FIXME/XXX) + + AVCodecContext *avctx; + RangeCoder c; + DSPContext dsp; + AVFrame new_picture; + AVFrame input_picture; ///< new_picture with the internal linesizes + AVFrame current_picture; + AVFrame last_picture[MAX_REF_FRAMES]; + AVFrame mconly_picture; +// uint8_t q_context[16]; + uint8_t header_state[32]; + uint8_t block_state[128 + 32*128]; + int keyframe; + int always_reset; + int version; + int spatial_decomposition_type; + int last_spatial_decomposition_type; + int temporal_decomposition_type; + int spatial_decomposition_count; + int temporal_decomposition_count; + int max_ref_frames; + int ref_frames; + int16_t (*ref_mvs[MAX_REF_FRAMES])[2]; + uint32_t *ref_scores[MAX_REF_FRAMES]; + DWTELEM *spatial_dwt_buffer; + int colorspace_type; + int chroma_h_shift; + int chroma_v_shift; + int spatial_scalability; + int qlog; + int last_qlog; + int lambda; + int lambda2; + int pass1_rc; + int mv_scale; + int last_mv_scale; + int qbias; + int last_qbias; +#define QBIAS_SHIFT 3 + int b_width; + int b_height; + int block_max_depth; + int last_block_max_depth; + Plane plane[MAX_PLANES]; + BlockNode *block; +#define ME_CACHE_SIZE 1024 + int me_cache[ME_CACHE_SIZE]; + int me_cache_generation; + slice_buffer sb; + + MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to make the motion estimation eventually independent of MpegEncContext, so this will be removed then (FIXME/XXX) +}SnowContext; + +typedef struct { + DWTELEM *b0; + DWTELEM *b1; + DWTELEM *b2; + DWTELEM *b3; + int y; +} dwt_compose_t; + +#define slice_buffer_get_line(slice_buf, line_num) ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] : slice_buffer_load_line((slice_buf), (line_num))) +//#define slice_buffer_get_line(slice_buf, line_num) (slice_buffer_load_line((slice_buf), (line_num))) + +static void iterative_me(SnowContext *s); + +static void slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, DWTELEM * base_buffer) +{ + int i; + + buf->base_buffer = base_buffer; + buf->line_count = line_count; + buf->line_width = line_width; + buf->data_count = max_allocated_lines; + buf->line = (DWTELEM * *) av_mallocz (sizeof(DWTELEM *) * line_count); + buf->data_stack = (DWTELEM * *) av_malloc (sizeof(DWTELEM *) * max_allocated_lines); + + for (i = 0; i < max_allocated_lines; i++) + { + buf->data_stack[i] = (DWTELEM *) av_malloc (sizeof(DWTELEM) * line_width); + } + + buf->data_stack_top = max_allocated_lines - 1; +} + +static DWTELEM * slice_buffer_load_line(slice_buffer * buf, int line) +{ + int offset; + DWTELEM * buffer; + +// av_log(NULL, AV_LOG_DEBUG, "Cache hit: %d\n", line); + + assert(buf->data_stack_top >= 0); +// assert(!buf->line[line]); + if (buf->line[line]) + return buf->line[line]; + + offset = buf->line_width * line; + buffer = buf->data_stack[buf->data_stack_top]; + buf->data_stack_top--; + buf->line[line] = buffer; + +// av_log(NULL, AV_LOG_DEBUG, "slice_buffer_load_line: line: %d remaining: %d\n", line, buf->data_stack_top + 1); + + return buffer; +} + +static void slice_buffer_release(slice_buffer * buf, int line) +{ + int offset; + DWTELEM * buffer; + + assert(line >= 0 && line < buf->line_count); + assert(buf->line[line]); + + offset = buf->line_width * line; + buffer = buf->line[line]; + buf->data_stack_top++; + buf->data_stack[buf->data_stack_top] = buffer; + buf->line[line] = NULL; + +// av_log(NULL, AV_LOG_DEBUG, "slice_buffer_release: line: %d remaining: %d\n", line, buf->data_stack_top + 1); +} + +static void slice_buffer_flush(slice_buffer * buf) +{ + int i; + for (i = 0; i < buf->line_count; i++) + { + if (buf->line[i]) + { +// av_log(NULL, AV_LOG_DEBUG, "slice_buffer_flush: line: %d \n", i); + slice_buffer_release(buf, i); + } + } +} + +static void slice_buffer_destroy(slice_buffer * buf) +{ + int i; + slice_buffer_flush(buf); + + for (i = buf->data_count - 1; i >= 0; i--) + { + assert(buf->data_stack[i]); + av_freep(&buf->data_stack[i]); + } + assert(buf->data_stack); + av_freep(&buf->data_stack); + assert(buf->line); + av_freep(&buf->line); +} + +#ifdef __sgi +// Avoid a name clash on SGI IRIX +#undef qexp +#endif +#define QEXPSHIFT (7-FRAC_BITS+8) //FIXME try to change this to 0 +static uint8_t qexp[QROOT]; + +static inline int mirror(int v, int m){ + while((unsigned)v > (unsigned)m){ + v=-v; + if(v<0) v+= 2*m; + } + return v; +} + +static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){ + int i; + + if(v){ + const int a= FFABS(v); + const int e= av_log2(a); +#if 1 + const int el= FFMIN(e, 10); + put_rac(c, state+0, 0); + + for(i=0; i<el; i++){ + put_rac(c, state+1+i, 1); //1..10 + } + for(; i<e; i++){ + put_rac(c, state+1+9, 1); //1..10 + } + put_rac(c, state+1+FFMIN(i,9), 0); + + for(i=e-1; i>=el; i--){ + put_rac(c, state+22+9, (a>>i)&1); //22..31 + } + for(; i>=0; i--){ + put_rac(c, state+22+i, (a>>i)&1); //22..31 + } + + if(is_signed) + put_rac(c, state+11 + el, v < 0); //11..21 +#else + + put_rac(c, state+0, 0); + if(e<=9){ + for(i=0; i<e; i++){ + put_rac(c, state+1+i, 1); //1..10 + } + put_rac(c, state+1+i, 0); + + for(i=e-1; i>=0; i--){ + put_rac(c, state+22+i, (a>>i)&1); //22..31 + } + + if(is_signed) + put_rac(c, state+11 + e, v < 0); //11..21 + }else{ + for(i=0; i<e; i++){ + put_rac(c, state+1+FFMIN(i,9), 1); //1..10 + } + put_rac(c, state+1+FFMIN(i,9), 0); + + for(i=e-1; i>=0; i--){ + put_rac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31 + } + + if(is_signed) + put_rac(c, state+11 + FFMIN(e,10), v < 0); //11..21 + } +#endif + }else{ + put_rac(c, state+0, 1); + } +} + +static inline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){ + if(get_rac(c, state+0)) + return 0; + else{ + int i, e, a; + e= 0; + while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10 + e++; + } + + a= 1; + for(i=e-1; i>=0; i--){ + a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31 + } + + if(is_signed && get_rac(c, state+11 + FFMIN(e,10))) //11..21 + return -a; + else + return a; + } +} + +static inline void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2){ + int i; + int r= log2>=0 ? 1<<log2 : 1; + + assert(v>=0); + assert(log2>=-4); + + while(v >= r){ + put_rac(c, state+4+log2, 1); + v -= r; + log2++; + if(log2>0) r+=r; + } + put_rac(c, state+4+log2, 0); + + for(i=log2-1; i>=0; i--){ + put_rac(c, state+31-i, (v>>i)&1); + } +} + +static inline int get_symbol2(RangeCoder *c, uint8_t *state, int log2){ + int i; + int r= log2>=0 ? 1<<log2 : 1; + int v=0; + + assert(log2>=-4); + + while(get_rac(c, state+4+log2)){ + v+= r; + log2++; + if(log2>0) r+=r; + } + + for(i=log2-1; i>=0; i--){ + v+= get_rac(c, state+31-i)<<i; + } + + return v; +} + +static av_always_inline void lift(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){ + const int mirror_left= !highpass; + const int mirror_right= (width&1) ^ highpass; + const int w= (width>>1) - 1 + (highpass & width); + int i; + +#define LIFT(src, ref, inv) ((src) + ((inv) ? - (ref) : + (ref))) + if(mirror_left){ + dst[0] = LIFT(src[0], ((mul*2*ref[0]+add)>>shift), inverse); + dst += dst_step; + src += src_step; + } + + for(i=0; i<w; i++){ + dst[i*dst_step] = LIFT(src[i*src_step], ((mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add)>>shift), inverse); + } + + if(mirror_right){ + dst[w*dst_step] = LIFT(src[w*src_step], ((mul*2*ref[w*ref_step]+add)>>shift), inverse); + } +} + +#ifndef lift5 +static av_always_inline void lift5(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){ + const int mirror_left= !highpass; + const int mirror_right= (width&1) ^ highpass; + const int w= (width>>1) - 1 + (highpass & width); + int i; + + if(mirror_left){ + int r= 3*2*ref[0]; + r += r>>4; + r += r>>8; + dst[0] = LIFT(src[0], ((r+add)>>shift), inverse); + dst += dst_step; + src += src_step; + } + + for(i=0; i<w; i++){ + int r= 3*(ref[i*ref_step] + ref[(i+1)*ref_step]); + r += r>>4; + r += r>>8; + dst[i*dst_step] = LIFT(src[i*src_step], ((r+add)>>shift), inverse); + } + + if(mirror_right){ + int r= 3*2*ref[w*ref_step]; + r += r>>4; + r += r>>8; + dst[w*dst_step] = LIFT(src[w*src_step], ((r+add)>>shift), inverse); + } +} +#endif + +#ifndef liftS +static av_always_inline void liftS(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){ + const int mirror_left= !highpass; + const int mirror_right= (width&1) ^ highpass; + const int w= (width>>1) - 1 + (highpass & width); + int i; + + assert(shift == 4); +#define LIFTS(src, ref, inv) ((inv) ? (src) - (((ref) - 4*(src))>>shift): (16*4*(src) + 4*(ref) + 8 + (5<<27))/(5*16) - (1<<23)) + if(mirror_left){ + dst[0] = LIFTS(src[0], mul*2*ref[0]+add, inverse); + dst += dst_step; + src += src_step; + } + + for(i=0; i<w; i++){ + dst[i*dst_step] = LIFTS(src[i*src_step], mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add, inverse); + } + + if(mirror_right){ + dst[w*dst_step] = LIFTS(src[w*src_step], mul*2*ref[w*ref_step]+add, inverse); + } +} +#endif + + +static void inplace_lift(DWTELEM *dst, int width, int *coeffs, int n, int shift, int start, int inverse){ + int x, i; + + for(x=start; x<width; x+=2){ + int64_t sum=0; + + for(i=0; i<n; i++){ + int x2= x + 2*i - n + 1; + if (x2< 0) x2= -x2; + else if(x2>=width) x2= 2*width-x2-2; + sum += coeffs[i]*(int64_t)dst[x2]; + } + if(inverse) dst[x] -= (sum + (1<<shift)/2)>>shift; + else dst[x] += (sum + (1<<shift)/2)>>shift; + } +} + +static void inplace_liftV(DWTELEM *dst, int width, int height, int stride, int *coeffs, int n, int shift, int start, int inverse){ + int x, y, i; + for(y=start; y<height; y+=2){ + for(x=0; x<width; x++){ + int64_t sum=0; + + for(i=0; i<n; i++){ + int y2= y + 2*i - n + 1; + if (y2< 0) y2= -y2; + else if(y2>=height) y2= 2*height-y2-2; + sum += coeffs[i]*(int64_t)dst[x + y2*stride]; + } + if(inverse) dst[x + y*stride] -= (sum + (1<<shift)/2)>>shift; + else dst[x + y*stride] += (sum + (1<<shift)/2)>>shift; + } + } +} + +#define SCALEX 1 +#define LX0 0 +#define LX1 1 + +#if 0 // more accurate 9/7 +#define N1 2 +#define SHIFT1 14 +#define COEFFS1 (int[]){-25987,-25987} +#define N2 2 +#define SHIFT2 19 +#define COEFFS2 (int[]){-27777,-27777} +#define N3 2 +#define SHIFT3 15 +#define COEFFS3 (int[]){28931,28931} +#define N4 2 +#define SHIFT4 15 +#define COEFFS4 (int[]){14533,14533} +#elif 1 // 13/7 CRF +#define N1 4 +#define SHIFT1 4 +#define COEFFS1 (int[]){1,-9,-9,1} +#define N2 4 +#define SHIFT2 4 +#define COEFFS2 (int[]){-1,5,5,-1} +#define N3 0 +#define SHIFT3 1 +#define COEFFS3 NULL +#define N4 0 +#define SHIFT4 1 +#define COEFFS4 NULL +#elif 1 // 3/5 +#define LX0 1 +#define LX1 0 +#define SCALEX 0.5 +#define N1 2 +#define SHIFT1 1 +#define COEFFS1 (int[]){1,1} +#define N2 2 +#define SHIFT2 2 +#define COEFFS2 (int[]){-1,-1} +#define N3 0 +#define SHIFT3 0 +#define COEFFS3 NULL +#define N4 0 +#define SHIFT4 0 +#define COEFFS4 NULL +#elif 1 // 11/5 +#define N1 0 +#define SHIFT1 1 +#define COEFFS1 NULL +#define N2 2 +#define SHIFT2 2 +#define COEFFS2 (int[]){-1,-1} +#define N3 2 +#define SHIFT3 0 +#define COEFFS3 (int[]){-1,-1} +#define N4 4 +#define SHIFT4 7 +#define COEFFS4 (int[]){-5,29,29,-5} +#define SCALEX 4 +#elif 1 // 9/7 CDF +#define N1 2 +#define SHIFT1 7 +#define COEFFS1 (int[]){-203,-203} +#define N2 2 +#define SHIFT2 12 +#define COEFFS2 (int[]){-217,-217} +#define N3 2 +#define SHIFT3 7 +#define COEFFS3 (int[]){113,113} +#define N4 2 +#define SHIFT4 9 +#define COEFFS4 (int[]){227,227} +#define SCALEX 1 +#elif 1 // 7/5 CDF +#define N1 0 +#define SHIFT1 1 +#define COEFFS1 NULL +#define N2 2 +#define SHIFT2 2 +#define COEFFS2 (int[]){-1,-1} +#define N3 2 +#define SHIFT3 0 +#define COEFFS3 (int[]){-1,-1} +#define N4 2 +#define SHIFT4 4 +#define COEFFS4 (int[]){3,3} +#elif 1 // 9/7 MN +#define N1 4 +#define SHIFT1 4 +#define COEFFS1 (int[]){1,-9,-9,1} +#define N2 2 +#define SHIFT2 2 +#define COEFFS2 (int[]){1,1} +#define N3 0 +#define SHIFT3 1 +#define COEFFS3 NULL +#define N4 0 +#define SHIFT4 1 +#define COEFFS4 NULL +#else // 13/7 CRF +#define N1 4 +#define SHIFT1 4 +#define COEFFS1 (int[]){1,-9,-9,1} +#define N2 4 +#define SHIFT2 4 +#define COEFFS2 (int[]){-1,5,5,-1} +#define N3 0 +#define SHIFT3 1 +#define COEFFS3 NULL +#define N4 0 +#define SHIFT4 1 +#define COEFFS4 NULL +#endif +static void horizontal_decomposeX(DWTELEM *b, int width){ + DWTELEM temp[width]; + const int width2= width>>1; + const int w2= (width+1)>>1; + int x; + + inplace_lift(b, width, COEFFS1, N1, SHIFT1, LX1, 0); + inplace_lift(b, width, COEFFS2, N2, SHIFT2, LX0, 0); + inplace_lift(b, width, COEFFS3, N3, SHIFT3, LX1, 0); + inplace_lift(b, width, COEFFS4, N4, SHIFT4, LX0, 0); + + for(x=0; x<width2; x++){ + temp[x ]= b[2*x ]; + temp[x+w2]= b[2*x + 1]; + } + if(width&1) + temp[x ]= b[2*x ]; + memcpy(b, temp, width*sizeof(int)); +} + +static void horizontal_composeX(DWTELEM *b, int width){ + DWTELEM temp[width]; + const int width2= width>>1; + int x; + const int w2= (width+1)>>1; + + memcpy(temp, b, width*sizeof(int)); + for(x=0; x<width2; x++){ + b[2*x ]= temp[x ]; + b[2*x + 1]= temp[x+w2]; + } + if(width&1) + b[2*x ]= temp[x ]; + + inplace_lift(b, width, COEFFS4, N4, SHIFT4, LX0, 1); + inplace_lift(b, width, COEFFS3, N3, SHIFT3, LX1, 1); + inplace_lift(b, width, COEFFS2, N2, SHIFT2, LX0, 1); + inplace_lift(b, width, COEFFS1, N1, SHIFT1, LX1, 1); +} + +static void spatial_decomposeX(DWTELEM *buffer, int width, int height, int stride){ + int x, y; + + for(y=0; y<height; y++){ + for(x=0; x<width; x++){ + buffer[y*stride + x] *= SCALEX; + } + } + + for(y=0; y<height; y++){ + horizontal_decomposeX(buffer + y*stride, width); + } + + inplace_liftV(buffer, width, height, stride, COEFFS1, N1, SHIFT1, LX1, 0); + inplace_liftV(buffer, width, height, stride, COEFFS2, N2, SHIFT2, LX0, 0); + inplace_liftV(buffer, width, height, stride, COEFFS3, N3, SHIFT3, LX1, 0); + inplace_liftV(buffer, width, height, stride, COEFFS4, N4, SHIFT4, LX0, 0); +} + +static void spatial_composeX(DWTELEM *buffer, int width, int height, int stride){ + int x, y; + + inplace_liftV(buffer, width, height, stride, COEFFS4, N4, SHIFT4, LX0, 1); + inplace_liftV(buffer, width, height, stride, COEFFS3, N3, SHIFT3, LX1, 1); + inplace_liftV(buffer, width, height, stride, COEFFS2, N2, SHIFT2, LX0, 1); + inplace_liftV(buffer, width, height, stride, COEFFS1, N1, SHIFT1, LX1, 1); + + for(y=0; y<height; y++){ + horizontal_composeX(buffer + y*stride, width); + } + + for(y=0; y<height; y++){ + for(x=0; x<width; x++){ + buffer[y*stride + x] /= SCALEX; + } + } +} + +static void horizontal_decompose53i(DWTELEM *b, int width){ + DWTELEM temp[width]; + const int width2= width>>1; + int x; + const int w2= (width+1)>>1; + + for(x=0; x<width2; x++){ + temp[x ]= b[2*x ]; + temp[x+w2]= b[2*x + 1]; + } + if(width&1) + temp[x ]= b[2*x ]; +#if 0 + { + int A1,A2,A3,A4; + A2= temp[1 ]; + A4= temp[0 ]; + A1= temp[0+width2]; + A1 -= (A2 + A4)>>1; + A4 += (A1 + 1)>>1; + b[0+width2] = A1; + b[0 ] = A4; + for(x=1; x+1<width2; x+=2){ + A3= temp[x+width2]; + A4= temp[x+1 ]; + A3 -= (A2 + A4)>>1; + A2 += (A1 + A3 + 2)>>2; + b[x+width2] = A3; + b[x ] = A2; + + A1= temp[x+1+width2]; + A2= temp[x+2 ]; + A1 -= (A2 + A4)>>1; + A4 += (A1 + A3 + 2)>>2; + b[x+1+width2] = A1; + b[x+1 ] = A4; + } + A3= temp[width-1]; + A3 -= A2; + A2 += (A1 + A3 + 2)>>2; + b[width -1] = A3; + b[width2-1] = A2; + } +#else + lift(b+w2, temp+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 0); + lift(b , temp , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 0); +#endif +} + +static void vertical_decompose53iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ + b1[i] -= (b0[i] + b2[i])>>1; + } +} + +static void vertical_decompose53iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ + b1[i] += (b0[i] + b2[i] + 2)>>2; + } +} + +static void spatial_decompose53i(DWTELEM *buffer, int width, int height, int stride){ + int y; + DWTELEM *b0= buffer + mirror(-2-1, height-1)*stride; + DWTELEM *b1= buffer + mirror(-2 , height-1)*stride; + + for(y=-2; y<height; y+=2){ + DWTELEM *b2= buffer + mirror(y+1, height-1)*stride; + DWTELEM *b3= buffer + mirror(y+2, height-1)*stride; + +{START_TIMER + if(y+1<(unsigned)height) horizontal_decompose53i(b2, width); + if(y+2<(unsigned)height) horizontal_decompose53i(b3, width); +STOP_TIMER("horizontal_decompose53i")} + +{START_TIMER + if(y+1<(unsigned)height) vertical_decompose53iH0(b1, b2, b3, width); + if(y+0<(unsigned)height) vertical_decompose53iL0(b0, b1, b2, width); +STOP_TIMER("vertical_decompose53i*")} + + b0=b2; + b1=b3; + } +} + +static void horizontal_decompose97i(DWTELEM *b, int width){ + DWTELEM temp[width]; + const int w2= (width+1)>>1; + + lift (temp+w2, b +1, b , 1, 2, 2, width, -W_AM, W_AO, W_AS, 1, 0); + liftS(temp , b , temp+w2, 1, 2, 1, width, -W_BM, W_BO, W_BS, 0, 0); + lift5(b +w2, temp+w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 0); + lift (b , temp , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 0); +} + + +static void vertical_decompose97iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ + b1[i] -= (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS; + } +} + +static void vertical_decompose97iH1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ +#ifdef lift5 + b1[i] += (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS; +#else + int r= 3*(b0[i] + b2[i]); + r+= r>>4; + r+= r>>8; + b1[i] += (r+W_CO)>>W_CS; +#endif + } +} + +static void vertical_decompose97iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ +#ifdef liftS + b1[i] -= (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS; +#else + b1[i] = (16*4*b1[i] - 4*(b0[i] + b2[i]) + 8*5 + (5<<27)) / (5*16) - (1<<23); +#endif + } +} + +static void vertical_decompose97iL1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ + b1[i] += (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS; + } +} + +static void spatial_decompose97i(DWTELEM *buffer, int width, int height, int stride){ + int y; + DWTELEM *b0= buffer + mirror(-4-1, height-1)*stride; + DWTELEM *b1= buffer + mirror(-4 , height-1)*stride; + DWTELEM *b2= buffer + mirror(-4+1, height-1)*stride; + DWTELEM *b3= buffer + mirror(-4+2, height-1)*stride; + + for(y=-4; y<height; y+=2){ + DWTELEM *b4= buffer + mirror(y+3, height-1)*stride; + DWTELEM *b5= buffer + mirror(y+4, height-1)*stride; + +{START_TIMER + if(y+3<(unsigned)height) horizontal_decompose97i(b4, width); + if(y+4<(unsigned)height) horizontal_decompose97i(b5, width); +if(width>400){ +STOP_TIMER("horizontal_decompose97i") +}} + +{START_TIMER + if(y+3<(unsigned)height) vertical_decompose97iH0(b3, b4, b5, width); + if(y+2<(unsigned)height) vertical_decompose97iL0(b2, b3, b4, width); + if(y+1<(unsigned)height) vertical_decompose97iH1(b1, b2, b3, width); + if(y+0<(unsigned)height) vertical_decompose97iL1(b0, b1, b2, width); + +if(width>400){ +STOP_TIMER("vertical_decompose97i") +}} + + b0=b2; + b1=b3; + b2=b4; + b3=b5; + } +} + +void ff_spatial_dwt(DWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){ + int level; + + for(level=0; level<decomposition_count; level++){ + switch(type){ + case DWT_97: spatial_decompose97i(buffer, width>>level, height>>level, stride<<level); break; + case DWT_53: spatial_decompose53i(buffer, width>>level, height>>level, stride<<level); break; + case DWT_X: spatial_decomposeX (buffer, width>>level, height>>level, stride<<level); break; + } + } +} + +static void horizontal_compose53i(DWTELEM *b, int width){ + DWTELEM temp[width]; + const int width2= width>>1; + const int w2= (width+1)>>1; + int x; + +#if 0 + int A1,A2,A3,A4; + A2= temp[1 ]; + A4= temp[0 ]; + A1= temp[0+width2]; + A1 -= (A2 + A4)>>1; + A4 += (A1 + 1)>>1; + b[0+width2] = A1; + b[0 ] = A4; + for(x=1; x+1<width2; x+=2){ + A3= temp[x+width2]; + A4= temp[x+1 ]; + A3 -= (A2 + A4)>>1; + A2 += (A1 + A3 + 2)>>2; + b[x+width2] = A3; + b[x ] = A2; + + A1= temp[x+1+width2]; + A2= temp[x+2 ]; + A1 -= (A2 + A4)>>1; + A4 += (A1 + A3 + 2)>>2; + b[x+1+width2] = A1; + b[x+1 ] = A4; + } + A3= temp[width-1]; + A3 -= A2; + A2 += (A1 + A3 + 2)>>2; + b[width -1] = A3; + b[width2-1] = A2; +#else + lift(temp , b , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 1); + lift(temp+w2, b+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 1); +#endif + for(x=0; x<width2; x++){ + b[2*x ]= temp[x ]; + b[2*x + 1]= temp[x+w2]; + } + if(width&1) + b[2*x ]= temp[x ]; +} + +static void vertical_compose53iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ + b1[i] += (b0[i] + b2[i])>>1; + } +} + +static void vertical_compose53iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ + b1[i] -= (b0[i] + b2[i] + 2)>>2; + } +} + +static void spatial_compose53i_buffered_init(dwt_compose_t *cs, slice_buffer * sb, int height, int stride_line){ + cs->b0 = slice_buffer_get_line(sb, mirror(-1-1, height-1) * stride_line); + cs->b1 = slice_buffer_get_line(sb, mirror(-1 , height-1) * stride_line); + cs->y = -1; +} + +static void spatial_compose53i_init(dwt_compose_t *cs, DWTELEM *buffer, int height, int stride){ + cs->b0 = buffer + mirror(-1-1, height-1)*stride; + cs->b1 = buffer + mirror(-1 , height-1)*stride; + cs->y = -1; +} + +static void spatial_compose53i_dy_buffered(dwt_compose_t *cs, slice_buffer * sb, int width, int height, int stride_line){ + int y= cs->y; + + DWTELEM *b0= cs->b0; + DWTELEM *b1= cs->b1; + DWTELEM *b2= slice_buffer_get_line(sb, mirror(y+1, height-1) * stride_line); + DWTELEM *b3= slice_buffer_get_line(sb, mirror(y+2, height-1) * stride_line); + +{START_TIMER + if(y+1<(unsigned)height) vertical_compose53iL0(b1, b2, b3, width); + if(y+0<(unsigned)height) vertical_compose53iH0(b0, b1, b2, width); +STOP_TIMER("vertical_compose53i*")} + +{START_TIMER + if(y-1<(unsigned)height) horizontal_compose53i(b0, width); + if(y+0<(unsigned)height) horizontal_compose53i(b1, width); +STOP_TIMER("horizontal_compose53i")} + + cs->b0 = b2; + cs->b1 = b3; + cs->y += 2; +} + +static void spatial_compose53i_dy(dwt_compose_t *cs, DWTELEM *buffer, int width, int height, int stride){ + int y= cs->y; + DWTELEM *b0= cs->b0; + DWTELEM *b1= cs->b1; + DWTELEM *b2= buffer + mirror(y+1, height-1)*stride; + DWTELEM *b3= buffer + mirror(y+2, height-1)*stride; + +{START_TIMER + if(y+1<(unsigned)height) vertical_compose53iL0(b1, b2, b3, width); + if(y+0<(unsigned)height) vertical_compose53iH0(b0, b1, b2, width); +STOP_TIMER("vertical_compose53i*")} + +{START_TIMER + if(y-1<(unsigned)height) horizontal_compose53i(b0, width); + if(y+0<(unsigned)height) horizontal_compose53i(b1, width); +STOP_TIMER("horizontal_compose53i")} + + cs->b0 = b2; + cs->b1 = b3; + cs->y += 2; +} + +static void spatial_compose53i(DWTELEM *buffer, int width, int height, int stride){ + dwt_compose_t cs; + spatial_compose53i_init(&cs, buffer, height, stride); + while(cs.y <= height) + spatial_compose53i_dy(&cs, buffer, width, height, stride); +} + + +void ff_snow_horizontal_compose97i(DWTELEM *b, int width){ + DWTELEM temp[width]; + const int w2= (width+1)>>1; + + lift (temp , b , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 1); + lift5(temp+w2, b +w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 1); + liftS(b , temp , temp+w2, 2, 1, 1, width, -W_BM, W_BO, W_BS, 0, 1); + lift (b+1 , temp+w2, b , 2, 1, 2, width, -W_AM, W_AO, W_AS, 1, 1); +} + +static void vertical_compose97iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ + b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS; + } +} + +static void vertical_compose97iH1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ +#ifdef lift5 + b1[i] -= (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS; +#else + int r= 3*(b0[i] + b2[i]); + r+= r>>4; + r+= r>>8; + b1[i] -= (r+W_CO)>>W_CS; +#endif + } +} + +static void vertical_compose97iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ +#ifdef liftS + b1[i] += (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS; +#else + b1[i] += (W_BM*(b0[i] + b2[i])+4*b1[i]+W_BO)>>W_BS; +#endif + } +} + +static void vertical_compose97iL1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ + int i; + + for(i=0; i<width; i++){ + b1[i] -= (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS; + } +} + +void ff_snow_vertical_compose97i(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWTELEM *b3, DWTELEM *b4, DWTELEM *b5, int width){ + int i; + + for(i=0; i<width; i++){ +#ifndef lift5 + int r; +#endif + b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS; +#ifdef lift5 + b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS; +#else + r= 3*(b2[i] + b4[i]); + r+= r>>4; + r+= r>>8; + b3[i] -= (r+W_CO)>>W_CS; +#endif +#ifdef liftS + b2[i] += (W_BM*(b1[i] + b3[i])+W_BO)>>W_BS; +#else + b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS; +#endif + b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS; + } +} + +static void spatial_compose97i_buffered_init(dwt_compose_t *cs, slice_buffer * sb, int height, int stride_line){ + cs->b0 = slice_buffer_get_line(sb, mirror(-3-1, height-1) * stride_line); + cs->b1 = slice_buffer_get_line(sb, mirror(-3 , height-1) * stride_line); + cs->b2 = slice_buffer_get_line(sb, mirror(-3+1, height-1) * stride_line); + cs->b3 = slice_buffer_get_line(sb, mirror(-3+2, height-1) * stride_line); + cs->y = -3; +} + +static void spatial_compose97i_init(dwt_compose_t *cs, DWTELEM *buffer, int height, int stride){ + cs->b0 = buffer + mirror(-3-1, height-1)*stride; + cs->b1 = buffer + mirror(-3 , height-1)*stride; + cs->b2 = buffer + mirror(-3+1, height-1)*stride; + cs->b3 = buffer + mirror(-3+2, height-1)*stride; + cs->y = -3; +} + +static void spatial_compose97i_dy_buffered(DSPContext *dsp, dwt_compose_t *cs, slice_buffer * sb, int width, int height, int stride_line){ + int y = cs->y; + + DWTELEM *b0= cs->b0; + DWTELEM *b1= cs->b1; + DWTELEM *b2= cs->b2; + DWTELEM *b3= cs->b3; + DWTELEM *b4= slice_buffer_get_line(sb, mirror(y + 3, height - 1) * stride_line); + DWTELEM *b5= slice_buffer_get_line(sb, mirror(y + 4, height - 1) * stride_line); + +{START_TIMER + if(y>0 && y+4<height){ + dsp->vertical_compose97i(b0, b1, b2, b3, b4, b5, width); + }else{ + if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width); + if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width); + if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width); + if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width); + } +if(width>400){ +STOP_TIMER("vertical_compose97i")}} + +{START_TIMER + if(y-1<(unsigned)height) dsp->horizontal_compose97i(b0, width); + if(y+0<(unsigned)height) dsp->horizontal_compose97i(b1, width); +if(width>400 && y+0<(unsigned)height){ +STOP_TIMER("horizontal_compose97i")}} + + cs->b0=b2; + cs->b1=b3; + cs->b2=b4; + cs->b3=b5; + cs->y += 2; +} + +static void spatial_compose97i_dy(dwt_compose_t *cs, DWTELEM *buffer, int width, int height, int stride){ + int y = cs->y; + DWTELEM *b0= cs->b0; + DWTELEM *b1= cs->b1; + DWTELEM *b2= cs->b2; + DWTELEM *b3= cs->b3; + DWTELEM *b4= buffer + mirror(y+3, height-1)*stride; + DWTELEM *b5= buffer + mirror(y+4, height-1)*stride; + +{START_TIMER + if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width); + if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width); + if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width); + if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width); +if(width>400){ +STOP_TIMER("vertical_compose97i")}} + +{START_TIMER + if(y-1<(unsigned)height) ff_snow_horizontal_compose97i(b0, width); + if(y+0<(unsigned)height) ff_snow_horizontal_compose97i(b1, width); +if(width>400 && b0 <= b2){ +STOP_TIMER("horizontal_compose97i")}} + + cs->b0=b2; + cs->b1=b3; + cs->b2=b4; + cs->b3=b5; + cs->y += 2; +} + +static void spatial_compose97i(DWTELEM *buffer, int width, int height, int stride){ + dwt_compose_t cs; + spatial_compose97i_init(&cs, buffer, height, stride); + while(cs.y <= height) + spatial_compose97i_dy(&cs, buffer, width, height, stride); +} + +static void ff_spatial_idwt_buffered_init(dwt_compose_t *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count){ + int level; + for(level=decomposition_count-1; level>=0; level--){ + switch(type){ + case DWT_97: spatial_compose97i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break; + case DWT_53: spatial_compose53i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break; + /* not slicified yet */ + case DWT_X: /*spatial_composeX(buffer, width>>level, height>>level, stride<<level); break;*/ + av_log(NULL, AV_LOG_ERROR, "spatial_composeX neither buffered nor slicified yet.\n"); break; + } + } +} + +static void ff_spatial_idwt_init(dwt_compose_t *cs, DWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){ + int level; + for(level=decomposition_count-1; level>=0; level--){ + switch(type){ + case DWT_97: spatial_compose97i_init(cs+level, buffer, height>>level, stride<<level); break; + case DWT_53: spatial_compose53i_init(cs+level, buffer, height>>level, stride<<level); break; + /* not slicified yet */ + case DWT_X: spatial_composeX(buffer, width>>level, height>>level, stride<<level); break; + } + } +} + +static void ff_spatial_idwt_slice(dwt_compose_t *cs, DWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count, int y){ + const int support = type==1 ? 3 : 5; + int level; + if(type==2) return; + + for(level=decomposition_count-1; level>=0; level--){ + while(cs[level].y <= FFMIN((y>>level)+support, height>>level)){ + switch(type){ + case DWT_97: spatial_compose97i_dy(cs+level, buffer, width>>level, height>>level, stride<<level); + break; + case DWT_53: spatial_compose53i_dy(cs+level, buffer, width>>level, height>>level, stride<<level); + break; + case DWT_X: break; + } + } + } +} + +static void ff_spatial_idwt_buffered_slice(DSPContext *dsp, dwt_compose_t *cs, slice_buffer * slice_buf, int width, int height, int stride_line, int type, int decomposition_count, int y){ + const int support = type==1 ? 3 : 5; + int level; + if(type==2) return; + + for(level=decomposition_count-1; level>=0; level--){ + while(cs[level].y <= FFMIN((y>>level)+support, height>>level)){ + switch(type){ + case DWT_97: spatial_compose97i_dy_buffered(dsp, cs+level, slice_buf, width>>level, height>>level, stride_line<<level); + break; + case DWT_53: spatial_compose53i_dy_buffered(cs+level, slice_buf, width>>level, height>>level, stride_line<<level); + break; + case DWT_X: break; + } + } + } +} + +static void ff_spatial_idwt(DWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){ + if(type==2){ + int level; + for(level=decomposition_count-1; level>=0; level--) + spatial_composeX (buffer, width>>level, height>>level, stride<<level); + }else{ + dwt_compose_t cs[MAX_DECOMPOSITIONS]; + int y; + ff_spatial_idwt_init(cs, buffer, width, height, stride, type, decomposition_count); + for(y=0; y<height; y+=4) + ff_spatial_idwt_slice(cs, buffer, width, height, stride, type, decomposition_count, y); + } +} + +static int encode_subband_c0run(SnowContext *s, SubBand *b, DWTELEM *src, DWTELEM *parent, int stride, int orientation){ + const int w= b->width; + const int h= b->height; + int x, y; + + if(1){ + int run=0; + int runs[w*h]; + int run_index=0; + int max_index; + + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int v, p=0; + int /*ll=0, */l=0, lt=0, t=0, rt=0; + v= src[x + y*stride]; + + if(y){ + t= src[x + (y-1)*stride]; + if(x){ + lt= src[x - 1 + (y-1)*stride]; + } + if(x + 1 < w){ + rt= src[x + 1 + (y-1)*stride]; + } + } + if(x){ + l= src[x - 1 + y*stride]; + /*if(x > 1){ + if(orientation==1) ll= src[y + (x-2)*stride]; + else ll= src[x - 2 + y*stride]; + }*/ + } + if(parent){ + int px= x>>1; + int py= y>>1; + if(px<b->parent->width && py<b->parent->height) + p= parent[px + py*2*stride]; + } + if(!(/*ll|*/l|lt|t|rt|p)){ + if(v){ + runs[run_index++]= run; + run=0; + }else{ + run++; + } + } + } + } + max_index= run_index; + runs[run_index++]= run; + run_index=0; + run= runs[run_index++]; + + put_symbol2(&s->c, b->state[30], max_index, 0); + if(run_index <= max_index) + put_symbol2(&s->c, b->state[1], run, 3); + + for(y=0; y<h; y++){ + if(s->c.bytestream_end - s->c.bytestream < w*40){ + av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); + return -1; + } + for(x=0; x<w; x++){ + int v, p=0; + int /*ll=0, */l=0, lt=0, t=0, rt=0; + v= src[x + y*stride]; + + if(y){ + t= src[x + (y-1)*stride]; + if(x){ + lt= src[x - 1 + (y-1)*stride]; + } + if(x + 1 < w){ + rt= src[x + 1 + (y-1)*stride]; + } + } + if(x){ + l= src[x - 1 + y*stride]; + /*if(x > 1){ + if(orientation==1) ll= src[y + (x-2)*stride]; + else ll= src[x - 2 + y*stride]; + }*/ + } + if(parent){ + int px= x>>1; + int py= y>>1; + if(px<b->parent->width && py<b->parent->height) + p= parent[px + py*2*stride]; + } + if(/*ll|*/l|lt|t|rt|p){ + int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p)); + + put_rac(&s->c, &b->state[0][context], !!v); + }else{ + if(!run){ + run= runs[run_index++]; + + if(run_index <= max_index) + put_symbol2(&s->c, b->state[1], run, 3); + assert(v); + }else{ + run--; + assert(!v); + } + } + if(v){ + int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p)); + int l2= 2*FFABS(l) + (l<0); + int t2= 2*FFABS(t) + (t<0); + + put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4); + put_rac(&s->c, &b->state[0][16 + 1 + 3 + quant3bA[l2&0xFF] + 3*quant3bA[t2&0xFF]], v<0); + } + } + } + } + return 0; +} + +static int encode_subband(SnowContext *s, SubBand *b, DWTELEM *src, DWTELEM *parent, int stride, int orientation){ +// encode_subband_qtree(s, b, src, parent, stride, orientation); +// encode_subband_z0run(s, b, src, parent, stride, orientation); + return encode_subband_c0run(s, b, src, parent, stride, orientation); +// encode_subband_dzr(s, b, src, parent, stride, orientation); +} + +static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){ + const int w= b->width; + const int h= b->height; + int x,y; + + if(1){ + int run, runs; + x_and_coeff *xc= b->x_coeff; + x_and_coeff *prev_xc= NULL; + x_and_coeff *prev2_xc= xc; + x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL; + x_and_coeff *prev_parent_xc= parent_xc; + + runs= get_symbol2(&s->c, b->state[30], 0); + if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3); + else run= INT_MAX; + + for(y=0; y<h; y++){ + int v=0; + int lt=0, t=0, rt=0; + + if(y && prev_xc->x == 0){ + rt= prev_xc->coeff; + } + for(x=0; x<w; x++){ + int p=0; + const int l= v; + + lt= t; t= rt; + + if(y){ + if(prev_xc->x <= x) + prev_xc++; + if(prev_xc->x == x + 1) + rt= prev_xc->coeff; + else + rt=0; + } + if(parent_xc){ + if(x>>1 > parent_xc->x){ + parent_xc++; + } + if(x>>1 == parent_xc->x){ + p= parent_xc->coeff; + } + } + if(/*ll|*/l|lt|t|rt|p){ + int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1)); + + v=get_rac(&s->c, &b->state[0][context]); + if(v){ + v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1); + v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + quant3bA[l&0xFF] + 3*quant3bA[t&0xFF]]); + + xc->x=x; + (xc++)->coeff= v; + } + }else{ + if(!run){ + if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3); + else run= INT_MAX; + v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1); + v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]); + + xc->x=x; + (xc++)->coeff= v; + }else{ + int max_run; + run--; + v=0; + + if(y) max_run= FFMIN(run, prev_xc->x - x - 2); + else max_run= FFMIN(run, w-x-1); + if(parent_xc) + max_run= FFMIN(max_run, 2*parent_xc->x - x - 1); + x+= max_run; + run-= max_run; + } + } + } + (xc++)->x= w+1; //end marker + prev_xc= prev2_xc; + prev2_xc= xc; + + if(parent_xc){ + if(y&1){ + while(parent_xc->x != parent->width+1) + parent_xc++; + parent_xc++; + prev_parent_xc= parent_xc; + }else{ + parent_xc= prev_parent_xc; + } + } + } + + (xc++)->x= w+1; //end marker + } +} + +static inline void decode_subband_slice_buffered(SnowContext *s, SubBand *b, slice_buffer * sb, int start_y, int h, int save_state[1]){ + const int w= b->width; + int y; + const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16); + int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT); + int qadd= (s->qbias*qmul)>>QBIAS_SHIFT; + int new_index = 0; + + START_TIMER + + if(b->buf == s->spatial_dwt_buffer || s->qlog == LOSSLESS_QLOG){ + qadd= 0; + qmul= 1<<QEXPSHIFT; + } + + /* If we are on the second or later slice, restore our index. */ + if (start_y != 0) + new_index = save_state[0]; + + + for(y=start_y; y<h; y++){ + int x = 0; + int v; + DWTELEM * line = slice_buffer_get_line(sb, y * b->stride_line + b->buf_y_offset) + b->buf_x_offset; + memset(line, 0, b->width*sizeof(DWTELEM)); + v = b->x_coeff[new_index].coeff; + x = b->x_coeff[new_index++].x; + while(x < w) + { + register int t= ( (v>>1)*qmul + qadd)>>QEXPSHIFT; + register int u= -(v&1); + line[x] = (t^u) - u; + + v = b->x_coeff[new_index].coeff; + x = b->x_coeff[new_index++].x; + } + } + if(w > 200 && start_y != 0/*level+1 == s->spatial_decomposition_count*/){ + STOP_TIMER("decode_subband") + } + + /* Save our variables for the next slice. */ + save_state[0] = new_index; + + return; +} + +static void reset_contexts(SnowContext *s){ //FIXME better initial contexts + int plane_index, level, orientation; + + for(plane_index=0; plane_index<3; plane_index++){ + for(level=0; level<s->spatial_decomposition_count; level++){ + for(orientation=level ? 1:0; orientation<4; orientation++){ + memset(s->plane[plane_index].band[level][orientation].state, MID_STATE, sizeof(s->plane[plane_index].band[level][orientation].state)); + } + } + } + memset(s->header_state, MID_STATE, sizeof(s->header_state)); + memset(s->block_state, MID_STATE, sizeof(s->block_state)); +} + +static int alloc_blocks(SnowContext *s){ + int w= -((-s->avctx->width )>>LOG2_MB_SIZE); + int h= -((-s->avctx->height)>>LOG2_MB_SIZE); + + s->b_width = w; + s->b_height= h; + + s->block= av_mallocz(w * h * sizeof(BlockNode) << (s->block_max_depth*2)); + return 0; +} + +static inline void copy_rac_state(RangeCoder *d, RangeCoder *s){ + uint8_t *bytestream= d->bytestream; + uint8_t *bytestream_start= d->bytestream_start; + *d= *s; + d->bytestream= bytestream; + d->bytestream_start= bytestream_start; +} + +//near copy & paste from dsputil, FIXME +static int pix_sum(uint8_t * pix, int line_size, int w) +{ + int s, i, j; + + s = 0; + for (i = 0; i < w; i++) { + for (j = 0; j < w; j++) { + s += pix[0]; + pix ++; + } + pix += line_size - w; + } + return s; +} + +//near copy & paste from dsputil, FIXME +static int pix_norm1(uint8_t * pix, int line_size, int w) +{ + int s, i, j; + uint32_t *sq = ff_squareTbl + 256; + + s = 0; + for (i = 0; i < w; i++) { + for (j = 0; j < w; j ++) { + s += sq[pix[0]]; + pix ++; + } + pix += line_size - w; + } + return s; +} + +static inline void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type){ + const int w= s->b_width << s->block_max_depth; + const int rem_depth= s->block_max_depth - level; + const int index= (x + y*w) << rem_depth; + const int block_w= 1<<rem_depth; + BlockNode block; + int i,j; + + block.color[0]= l; + block.color[1]= cb; + block.color[2]= cr; + block.mx= mx; + block.my= my; + block.ref= ref; + block.type= type; + block.level= level; + + for(j=0; j<block_w; j++){ + for(i=0; i<block_w; i++){ + s->block[index + i + j*w]= block; + } + } +} + +static inline void init_ref(MotionEstContext *c, uint8_t *src[3], uint8_t *ref[3], uint8_t *ref2[3], int x, int y, int ref_index){ + const int offset[3]= { + y*c-> stride + x, + ((y*c->uvstride + x)>>1), + ((y*c->uvstride + x)>>1), + }; + int i; + for(i=0; i<3; i++){ + c->src[0][i]= src [i]; + c->ref[0][i]= ref [i] + offset[i]; + } + assert(!ref_index); +} + +static inline void pred_mv(SnowContext *s, int *mx, int *my, int ref, + const BlockNode *left, const BlockNode *top, const BlockNode *tr){ + if(s->ref_frames == 1){ + *mx = mid_pred(left->mx, top->mx, tr->mx); + *my = mid_pred(left->my, top->my, tr->my); + }else{ + const int *scale = scale_mv_ref[ref]; + *mx = mid_pred((left->mx * scale[left->ref] + 128) >>8, + (top ->mx * scale[top ->ref] + 128) >>8, + (tr ->mx * scale[tr ->ref] + 128) >>8); + *my = mid_pred((left->my * scale[left->ref] + 128) >>8, + (top ->my * scale[top ->ref] + 128) >>8, + (tr ->my * scale[tr ->ref] + 128) >>8); + } +} + +//FIXME copy&paste +#define P_LEFT P[1] +#define P_TOP P[2] +#define P_TOPRIGHT P[3] +#define P_MEDIAN P[4] +#define P_MV1 P[9] +#define FLAG_QPEL 1 //must be 1 + +static int encode_q_branch(SnowContext *s, int level, int x, int y){ + uint8_t p_buffer[1024]; + uint8_t i_buffer[1024]; + uint8_t p_state[sizeof(s->block_state)]; + uint8_t i_state[sizeof(s->block_state)]; + RangeCoder pc, ic; + uint8_t *pbbak= s->c.bytestream; + uint8_t *pbbak_start= s->c.bytestream_start; + int score, score2, iscore, i_len, p_len, block_s, sum; + const int w= s->b_width << s->block_max_depth; + const int h= s->b_height << s->block_max_depth; + const int rem_depth= s->block_max_depth - level; + const int index= (x + y*w) << rem_depth; + const int block_w= 1<<(LOG2_MB_SIZE - level); + int trx= (x+1)<<rem_depth; + int try= (y+1)<<rem_depth; + const BlockNode *left = x ? &s->block[index-1] : &null_block; + const BlockNode *top = y ? &s->block[index-w] : &null_block; + const BlockNode *right = trx<w ? &s->block[index+1] : &null_block; + const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block; + const BlockNode *tl = y && x ? &s->block[index-w-1] : left; + const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt + int pl = left->color[0]; + int pcb= left->color[1]; + int pcr= left->color[2]; + int pmx, pmy; + int mx=0, my=0; + int l,cr,cb; + const int stride= s->current_picture.linesize[0]; + const int uvstride= s->current_picture.linesize[1]; + uint8_t *current_data[3]= { s->input_picture.data[0] + (x + y* stride)*block_w, + s->input_picture.data[1] + (x + y*uvstride)*block_w/2, + s->input_picture.data[2] + (x + y*uvstride)*block_w/2}; + int P[10][2]; + int16_t last_mv[3][2]; + int qpel= !!(s->avctx->flags & CODEC_FLAG_QPEL); //unused + const int shift= 1+qpel; + MotionEstContext *c= &s->m.me; + int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref); + int mx_context= av_log2(2*FFABS(left->mx - top->mx)); + int my_context= av_log2(2*FFABS(left->my - top->my)); + int s_context= 2*left->level + 2*top->level + tl->level + tr->level; + int ref, best_ref, ref_score, ref_mx, ref_my; + + assert(sizeof(s->block_state) >= 256); + if(s->keyframe){ + set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA); + return 0; + } + +// clip predictors / edge ? + + P_LEFT[0]= left->mx; + P_LEFT[1]= left->my; + P_TOP [0]= top->mx; + P_TOP [1]= top->my; + P_TOPRIGHT[0]= tr->mx; + P_TOPRIGHT[1]= tr->my; + + last_mv[0][0]= s->block[index].mx; + last_mv[0][1]= s->block[index].my; + last_mv[1][0]= right->mx; + last_mv[1][1]= right->my; + last_mv[2][0]= bottom->mx; + last_mv[2][1]= bottom->my; + + s->m.mb_stride=2; + s->m.mb_x= + s->m.mb_y= 0; + c->skip= 0; + + assert(c-> stride == stride); + assert(c->uvstride == uvstride); + + c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp); + c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp); + c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp); + c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_MV; + + c->xmin = - x*block_w - 16+2; + c->ymin = - y*block_w - 16+2; + c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-2; + c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-2; + + if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift); + if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift); + if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift); + if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift); + if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift); + if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip + if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift); + + P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]); + P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]); + + if (!y) { + c->pred_x= P_LEFT[0]; + c->pred_y= P_LEFT[1]; + } else { + c->pred_x = P_MEDIAN[0]; + c->pred_y = P_MEDIAN[1]; + } + + score= INT_MAX; + best_ref= 0; + for(ref=0; ref<s->ref_frames; ref++){ + init_ref(c, current_data, s->last_picture[ref].data, NULL, block_w*x, block_w*y, 0); + + ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv, + (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w); + + assert(ref_mx >= c->xmin); + assert(ref_mx <= c->xmax); + assert(ref_my >= c->ymin); + assert(ref_my <= c->ymax); + + ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w); + ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0); + ref_score+= 2*av_log2(2*ref)*c->penalty_factor; + if(s->ref_mvs[ref]){ + s->ref_mvs[ref][index][0]= ref_mx; + s->ref_mvs[ref][index][1]= ref_my; + s->ref_scores[ref][index]= ref_score; + } + if(score > ref_score){ + score= ref_score; + best_ref= ref; + mx= ref_mx; + my= ref_my; + } + } + //FIXME if mb_cmp != SSE then intra cant be compared currently and mb_penalty vs. lambda2 + + // subpel search + pc= s->c; + pc.bytestream_start= + pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo + memcpy(p_state, s->block_state, sizeof(s->block_state)); + + if(level!=s->block_max_depth) + put_rac(&pc, &p_state[4 + s_context], 1); + put_rac(&pc, &p_state[1 + left->type + top->type], 0); + if(s->ref_frames > 1) + put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0); + pred_mv(s, &pmx, &pmy, best_ref, left, top, tr); + put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1); + put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1); + p_len= pc.bytestream - pc.bytestream_start; + score += (s->lambda2*(p_len*8 + + (pc.outstanding_count - s->c.outstanding_count)*8 + + (-av_log2(pc.range) + av_log2(s->c.range)) + ))>>FF_LAMBDA_SHIFT; + + block_s= block_w*block_w; + sum = pix_sum(current_data[0], stride, block_w); + l= (sum + block_s/2)/block_s; + iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s; + + block_s= block_w*block_w>>2; + sum = pix_sum(current_data[1], uvstride, block_w>>1); + cb= (sum + block_s/2)/block_s; +// iscore += pix_norm1(¤t_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s; + sum = pix_sum(current_data[2], uvstride, block_w>>1); + cr= (sum + block_s/2)/block_s; +// iscore += pix_norm1(¤t_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s; + + ic= s->c; + ic.bytestream_start= + ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo + memcpy(i_state, s->block_state, sizeof(s->block_state)); + if(level!=s->block_max_depth) + put_rac(&ic, &i_state[4 + s_context], 1); + put_rac(&ic, &i_state[1 + left->type + top->type], 1); + put_symbol(&ic, &i_state[32], l-pl , 1); + put_symbol(&ic, &i_state[64], cb-pcb, 1); + put_symbol(&ic, &i_state[96], cr-pcr, 1); + i_len= ic.bytestream - ic.bytestream_start; + iscore += (s->lambda2*(i_len*8 + + (ic.outstanding_count - s->c.outstanding_count)*8 + + (-av_log2(ic.range) + av_log2(s->c.range)) + ))>>FF_LAMBDA_SHIFT; + +// assert(score==256*256*256*64-1); + assert(iscore < 255*255*256 + s->lambda2*10); + assert(iscore >= 0); + assert(l>=0 && l<=255); + assert(pl>=0 && pl<=255); + + if(level==0){ + int varc= iscore >> 8; + int vard= score >> 8; + if (vard <= 64 || vard < varc) + c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc); + else + c->scene_change_score+= s->m.qscale; + } + + if(level!=s->block_max_depth){ + put_rac(&s->c, &s->block_state[4 + s_context], 0); + score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0); + score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0); + score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1); + score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1); + score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead + + if(score2 < score && score2 < iscore) + return score2; + } + + if(iscore < score){ + pred_mv(s, &pmx, &pmy, 0, left, top, tr); + memcpy(pbbak, i_buffer, i_len); + s->c= ic; + s->c.bytestream_start= pbbak_start; + s->c.bytestream= pbbak + i_len; + set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA); + memcpy(s->block_state, i_state, sizeof(s->block_state)); + return iscore; + }else{ + memcpy(pbbak, p_buffer, p_len); + s->c= pc; + s->c.bytestream_start= pbbak_start; + s->c.bytestream= pbbak + p_len; + set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0); + memcpy(s->block_state, p_state, sizeof(s->block_state)); + return score; + } +} + +static av_always_inline int same_block(BlockNode *a, BlockNode *b){ + if((a->type&BLOCK_INTRA) && (b->type&BLOCK_INTRA)){ + return !((a->color[0] - b->color[0]) | (a->color[1] - b->color[1]) | (a->color[2] - b->color[2])); + }else{ + return !((a->mx - b->mx) | (a->my - b->my) | (a->ref - b->ref) | ((a->type ^ b->type)&BLOCK_INTRA)); + } +} + +static void encode_q_branch2(SnowContext *s, int level, int x, int y){ + const int w= s->b_width << s->block_max_depth; + const int rem_depth= s->block_max_depth - level; + const int index= (x + y*w) << rem_depth; + int trx= (x+1)<<rem_depth; + BlockNode *b= &s->block[index]; + const BlockNode *left = x ? &s->block[index-1] : &null_block; + const BlockNode *top = y ? &s->block[index-w] : &null_block; + const BlockNode *tl = y && x ? &s->block[index-w-1] : left; + const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt + int pl = left->color[0]; + int pcb= left->color[1]; + int pcr= left->color[2]; + int pmx, pmy; + int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref); + int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref; + int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref; + int s_context= 2*left->level + 2*top->level + tl->level + tr->level; + + if(s->keyframe){ + set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA); + return; + } + + if(level!=s->block_max_depth){ + if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){ + put_rac(&s->c, &s->block_state[4 + s_context], 1); + }else{ + put_rac(&s->c, &s->block_state[4 + s_context], 0); + encode_q_branch2(s, level+1, 2*x+0, 2*y+0); + encode_q_branch2(s, level+1, 2*x+1, 2*y+0); + encode_q_branch2(s, level+1, 2*x+0, 2*y+1); + encode_q_branch2(s, level+1, 2*x+1, 2*y+1); + return; + } + } + if(b->type & BLOCK_INTRA){ + pred_mv(s, &pmx, &pmy, 0, left, top, tr); + put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1); + put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1); + put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1); + put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1); + set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA); + }else{ + pred_mv(s, &pmx, &pmy, b->ref, left, top, tr); + put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0); + if(s->ref_frames > 1) + put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0); + put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1); + put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1); + set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0); + } +} + +static void decode_q_branch(SnowContext *s, int level, int x, int y){ + const int w= s->b_width << s->block_max_depth; + const int rem_depth= s->block_max_depth - level; + const int index= (x + y*w) << rem_depth; + int trx= (x+1)<<rem_depth; + const BlockNode *left = x ? &s->block[index-1] : &null_block; + const BlockNode *top = y ? &s->block[index-w] : &null_block; + const BlockNode *tl = y && x ? &s->block[index-w-1] : left; + const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt + int s_context= 2*left->level + 2*top->level + tl->level + tr->level; + + if(s->keyframe){ + set_blocks(s, level, x, y, null_block.color[0], null_block.color[1], null_block.color[2], null_block.mx, null_block.my, null_block.ref, BLOCK_INTRA); + return; + } + + if(level==s->block_max_depth || get_rac(&s->c, &s->block_state[4 + s_context])){ + int type, mx, my; + int l = left->color[0]; + int cb= left->color[1]; + int cr= left->color[2]; + int ref = 0; + int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref); + int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 0*av_log2(2*FFABS(tr->mx - top->mx)); + int my_context= av_log2(2*FFABS(left->my - top->my)) + 0*av_log2(2*FFABS(tr->my - top->my)); + + type= get_rac(&s->c, &s->block_state[1 + left->type + top->type]) ? BLOCK_INTRA : 0; + + if(type){ + pred_mv(s, &mx, &my, 0, left, top, tr); + l += get_symbol(&s->c, &s->block_state[32], 1); + cb+= get_symbol(&s->c, &s->block_state[64], 1); + cr+= get_symbol(&s->c, &s->block_state[96], 1); + }else{ + if(s->ref_frames > 1) + ref= get_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], 0); + pred_mv(s, &mx, &my, ref, left, top, tr); + mx+= get_symbol(&s->c, &s->block_state[128 + 32*(mx_context + 16*!!ref)], 1); + my+= get_symbol(&s->c, &s->block_state[128 + 32*(my_context + 16*!!ref)], 1); + } + set_blocks(s, level, x, y, l, cb, cr, mx, my, ref, type); + }else{ + decode_q_branch(s, level+1, 2*x+0, 2*y+0); + decode_q_branch(s, level+1, 2*x+1, 2*y+0); + decode_q_branch(s, level+1, 2*x+0, 2*y+1); + decode_q_branch(s, level+1, 2*x+1, 2*y+1); + } +} + +static void encode_blocks(SnowContext *s, int search){ + int x, y; + int w= s->b_width; + int h= s->b_height; + + if(s->avctx->me_method == ME_ITER && !s->keyframe && search) + iterative_me(s); + + for(y=0; y<h; y++){ + if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit + av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); + return; + } + for(x=0; x<w; x++){ + if(s->avctx->me_method == ME_ITER || !search) + encode_q_branch2(s, 0, x, y); + else + encode_q_branch (s, 0, x, y); + } + } +} + +static void decode_blocks(SnowContext *s){ + int x, y; + int w= s->b_width; + int h= s->b_height; + + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + decode_q_branch(s, 0, x, y); + } + } +} + +static void mc_block(uint8_t *dst, uint8_t *src, uint8_t *tmp, int stride, int b_w, int b_h, int dx, int dy){ + int x, y; +START_TIMER + for(y=0; y < b_h+5; y++){ + for(x=0; x < b_w; x++){ + int a0= src[x ]; + int a1= src[x + 1]; + int a2= src[x + 2]; + int a3= src[x + 3]; + int a4= src[x + 4]; + int a5= src[x + 5]; +// int am= 9*(a1+a2) - (a0+a3); + int am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5); +// int am= 18*(a2+a3) - 2*(a1+a4); +// int aL= (-7*a0 + 105*a1 + 35*a2 - 5*a3)>>3; +// int aR= (-7*a3 + 105*a2 + 35*a1 - 5*a0)>>3; + +// if(b_w==16) am= 8*(a1+a2); + + if(dx<8) am = (32*a2*( 8-dx) + am* dx + 128)>>8; + else am = ( am*(16-dx) + 32*a3*(dx-8) + 128)>>8; + + /* FIXME Try increasing tmp buffer to 16 bits and not clipping here. Should give marginally better results. - Robert*/ + if(am&(~255)) am= ~(am>>31); + + tmp[x] = am; + +/* if (dx< 4) tmp[x + y*stride]= (16*a1*( 4-dx) + aL* dx + 32)>>6; + else if(dx< 8) tmp[x + y*stride]= ( aL*( 8-dx) + am*(dx- 4) + 32)>>6; + else if(dx<12) tmp[x + y*stride]= ( am*(12-dx) + aR*(dx- 8) + 32)>>6; + else tmp[x + y*stride]= ( aR*(16-dx) + 16*a2*(dx-12) + 32)>>6;*/ + } + tmp += stride; + src += stride; + } + tmp -= (b_h+5)*stride; + + for(y=0; y < b_h; y++){ + for(x=0; x < b_w; x++){ + int a0= tmp[x + 0*stride]; + int a1= tmp[x + 1*stride]; + int a2= tmp[x + 2*stride]; + int a3= tmp[x + 3*stride]; + int a4= tmp[x + 4*stride]; + int a5= tmp[x + 5*stride]; + int am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5); +// int am= 18*(a2+a3) - 2*(a1+a4); +/* int aL= (-7*a0 + 105*a1 + 35*a2 - 5*a3)>>3; + int aR= (-7*a3 + 105*a2 + 35*a1 - 5*a0)>>3;*/ + +// if(b_w==16) am= 8*(a1+a2); + + if(dy<8) am = (32*a2*( 8-dy) + am* dy + 128)>>8; + else am = ( am*(16-dy) + 32*a3*(dy-8) + 128)>>8; + + if(am&(~255)) am= ~(am>>31); + + dst[x] = am; +/* if (dy< 4) tmp[x + y*stride]= (16*a1*( 4-dy) + aL* dy + 32)>>6; + else if(dy< 8) tmp[x + y*stride]= ( aL*( 8-dy) + am*(dy- 4) + 32)>>6; + else if(dy<12) tmp[x + y*stride]= ( am*(12-dy) + aR*(dy- 8) + 32)>>6; + else tmp[x + y*stride]= ( aR*(16-dy) + 16*a2*(dy-12) + 32)>>6;*/ + } + dst += stride; + tmp += stride; + } +STOP_TIMER("mc_block") +} + +#define mca(dx,dy,b_w)\ +static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, uint8_t *src, int stride, int h){\ + uint8_t tmp[stride*(b_w+5)];\ + assert(h==b_w);\ + mc_block(dst, src-2-2*stride, tmp, stride, b_w, b_w, dx, dy);\ +} + +mca( 0, 0,16) +mca( 8, 0,16) +mca( 0, 8,16) +mca( 8, 8,16) +mca( 0, 0,8) +mca( 8, 0,8) +mca( 0, 8,8) +mca( 8, 8,8) + +static void pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride, int sx, int sy, int b_w, int b_h, BlockNode *block, int plane_index, int w, int h){ + if(block->type & BLOCK_INTRA){ + int x, y; + const int color = block->color[plane_index]; + const int color4= color*0x01010101; + if(b_w==32){ + for(y=0; y < b_h; y++){ + *(uint32_t*)&dst[0 + y*stride]= color4; + *(uint32_t*)&dst[4 + y*stride]= color4; + *(uint32_t*)&dst[8 + y*stride]= color4; + *(uint32_t*)&dst[12+ y*stride]= color4; + *(uint32_t*)&dst[16+ y*stride]= color4; + *(uint32_t*)&dst[20+ y*stride]= color4; + *(uint32_t*)&dst[24+ y*stride]= color4; + *(uint32_t*)&dst[28+ y*stride]= color4; + } + }else if(b_w==16){ + for(y=0; y < b_h; y++){ + *(uint32_t*)&dst[0 + y*stride]= color4; + *(uint32_t*)&dst[4 + y*stride]= color4; + *(uint32_t*)&dst[8 + y*stride]= color4; + *(uint32_t*)&dst[12+ y*stride]= color4; + } + }else if(b_w==8){ + for(y=0; y < b_h; y++){ + *(uint32_t*)&dst[0 + y*stride]= color4; + *(uint32_t*)&dst[4 + y*stride]= color4; + } + }else if(b_w==4){ + for(y=0; y < b_h; y++){ + *(uint32_t*)&dst[0 + y*stride]= color4; + } + }else{ + for(y=0; y < b_h; y++){ + for(x=0; x < b_w; x++){ + dst[x + y*stride]= color; + } + } + } + }else{ + uint8_t *src= s->last_picture[block->ref].data[plane_index]; + const int scale= plane_index ? s->mv_scale : 2*s->mv_scale; + int mx= block->mx*scale; + int my= block->my*scale; + const int dx= mx&15; + const int dy= my&15; + const int tab_index= 3 - (b_w>>2) + (b_w>>4); + sx += (mx>>4) - 2; + sy += (my>>4) - 2; + src += sx + sy*stride; + if( (unsigned)sx >= w - b_w - 4 + || (unsigned)sy >= h - b_h - 4){ + ff_emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+5, b_h+5, sx, sy, w, h); + src= tmp + MB_SIZE; + } +// assert(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h); +// assert(!(b_w&(b_w-1))); + assert(b_w>1 && b_h>1); + assert(tab_index>=0 && tab_index<4 || b_w==32); + if((dx&3) || (dy&3) || !(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h) || (b_w&(b_w-1))) + mc_block(dst, src, tmp, stride, b_w, b_h, dx, dy); + else if(b_w==32){ + int y; + for(y=0; y<b_h; y+=16){ + s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 2 + (y+2)*stride,stride); + s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + 16 + y*stride, src + 18 + (y+2)*stride,stride); + } + }else if(b_w==b_h) + s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst,src + 2 + 2*stride,stride); + else if(b_w==2*b_h){ + s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst ,src + 2 + 2*stride,stride); + s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 2 + b_h + 2*stride,stride); + }else{ + assert(2*b_w==b_h); + s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst ,src + 2 + 2*stride ,stride); + s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst+b_w*stride,src + 2 + 2*stride+b_w*stride,stride); + } + } +} + +void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h, + int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){ + int y, x; + DWTELEM * dst; + for(y=0; y<b_h; y++){ + //FIXME ugly missue of obmc_stride + const uint8_t *obmc1= obmc + y*obmc_stride; + const uint8_t *obmc2= obmc1+ (obmc_stride>>1); + const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1); + const uint8_t *obmc4= obmc3+ (obmc_stride>>1); + dst = slice_buffer_get_line(sb, src_y + y); + for(x=0; x<b_w; x++){ + int v= obmc1[x] * block[3][x + y*src_stride] + +obmc2[x] * block[2][x + y*src_stride] + +obmc3[x] * block[1][x + y*src_stride] + +obmc4[x] * block[0][x + y*src_stride]; + + v <<= 8 - LOG2_OBMC_MAX; + if(FRAC_BITS != 8){ + v += 1<<(7 - FRAC_BITS); + v >>= 8 - FRAC_BITS; + } + if(add){ + v += dst[x + src_x]; + v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS; + if(v&(~255)) v= ~(v>>31); + dst8[x + y*src_stride] = v; + }else{ + dst[x + src_x] -= v; + } + } + } +} + +//FIXME name clenup (b_w, block_w, b_width stuff) +static av_always_inline void add_yblock(SnowContext *s, int sliced, slice_buffer *sb, DWTELEM *dst, uint8_t *dst8, const uint8_t *obmc, int src_x, int src_y, int b_w, int b_h, int w, int h, int dst_stride, int src_stride, int obmc_stride, int b_x, int b_y, int add, int offset_dst, int plane_index){ + const int b_width = s->b_width << s->block_max_depth; + const int b_height= s->b_height << s->block_max_depth; + const int b_stride= b_width; + BlockNode *lt= &s->block[b_x + b_y*b_stride]; + BlockNode *rt= lt+1; + BlockNode *lb= lt+b_stride; + BlockNode *rb= lb+1; + uint8_t *block[4]; + int tmp_step= src_stride >= 7*MB_SIZE ? MB_SIZE : MB_SIZE*src_stride; + uint8_t tmp[src_stride*7*MB_SIZE]; //FIXME align + uint8_t *ptmp; + int x,y; + + if(b_x<0){ + lt= rt; + lb= rb; + }else if(b_x + 1 >= b_width){ + rt= lt; + rb= lb; + } + if(b_y<0){ + lt= lb; + rt= rb; + }else if(b_y + 1 >= b_height){ + lb= lt; + rb= rt; + } + + if(src_x<0){ //FIXME merge with prev & always round internal width upto *16 + obmc -= src_x; + b_w += src_x; + if(!sliced && !offset_dst) + dst -= src_x; + src_x=0; + }else if(src_x + b_w > w){ + b_w = w - src_x; + } + if(src_y<0){ + obmc -= src_y*obmc_stride; + b_h += src_y; + if(!sliced && !offset_dst) + dst -= src_y*dst_stride; + src_y=0; + }else if(src_y + b_h> h){ + b_h = h - src_y; + } + + if(b_w<=0 || b_h<=0) return; + +assert(src_stride > 2*MB_SIZE + 5); + if(!sliced && offset_dst) + dst += src_x + src_y*dst_stride; + dst8+= src_x + src_y*src_stride; +// src += src_x + src_y*src_stride; + + ptmp= tmp + 3*tmp_step; + block[0]= ptmp; + ptmp+=tmp_step; + pred_block(s, block[0], tmp, src_stride, src_x, src_y, b_w, b_h, lt, plane_index, w, h); + + if(same_block(lt, rt)){ + block[1]= block[0]; + }else{ + block[1]= ptmp; + ptmp+=tmp_step; + pred_block(s, block[1], tmp, src_stride, src_x, src_y, b_w, b_h, rt, plane_index, w, h); + } + + if(same_block(lt, lb)){ + block[2]= block[0]; + }else if(same_block(rt, lb)){ + block[2]= block[1]; + }else{ + block[2]= ptmp; + ptmp+=tmp_step; + pred_block(s, block[2], tmp, src_stride, src_x, src_y, b_w, b_h, lb, plane_index, w, h); + } + + if(same_block(lt, rb) ){ + block[3]= block[0]; + }else if(same_block(rt, rb)){ + block[3]= block[1]; + }else if(same_block(lb, rb)){ + block[3]= block[2]; + }else{ + block[3]= ptmp; + pred_block(s, block[3], tmp, src_stride, src_x, src_y, b_w, b_h, rb, plane_index, w, h); + } +#if 0 + for(y=0; y<b_h; y++){ + for(x=0; x<b_w; x++){ + int v= obmc [x + y*obmc_stride] * block[3][x + y*src_stride] * (256/OBMC_MAX); + if(add) dst[x + y*dst_stride] += v; + else dst[x + y*dst_stride] -= v; + } + } + for(y=0; y<b_h; y++){ + uint8_t *obmc2= obmc + (obmc_stride>>1); + for(x=0; x<b_w; x++){ + int v= obmc2[x + y*obmc_stride] * block[2][x + y*src_stride] * (256/OBMC_MAX); + if(add) dst[x + y*dst_stride] += v; + else dst[x + y*dst_stride] -= v; + } + } + for(y=0; y<b_h; y++){ + uint8_t *obmc3= obmc + obmc_stride*(obmc_stride>>1); + for(x=0; x<b_w; x++){ + int v= obmc3[x + y*obmc_stride] * block[1][x + y*src_stride] * (256/OBMC_MAX); + if(add) dst[x + y*dst_stride] += v; + else dst[x + y*dst_stride] -= v; + } + } + for(y=0; y<b_h; y++){ + uint8_t *obmc3= obmc + obmc_stride*(obmc_stride>>1); + uint8_t *obmc4= obmc3+ (obmc_stride>>1); + for(x=0; x<b_w; x++){ + int v= obmc4[x + y*obmc_stride] * block[0][x + y*src_stride] * (256/OBMC_MAX); + if(add) dst[x + y*dst_stride] += v; + else dst[x + y*dst_stride] -= v; + } + } +#else + if(sliced){ + START_TIMER + + s->dsp.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8); + STOP_TIMER("inner_add_yblock") + }else + for(y=0; y<b_h; y++){ + //FIXME ugly missue of obmc_stride + const uint8_t *obmc1= obmc + y*obmc_stride; + const uint8_t *obmc2= obmc1+ (obmc_stride>>1); + const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1); + const uint8_t *obmc4= obmc3+ (obmc_stride>>1); + for(x=0; x<b_w; x++){ + int v= obmc1[x] * block[3][x + y*src_stride] + +obmc2[x] * block[2][x + y*src_stride] + +obmc3[x] * block[1][x + y*src_stride] + +obmc4[x] * block[0][x + y*src_stride]; + + v <<= 8 - LOG2_OBMC_MAX; + if(FRAC_BITS != 8){ + v += 1<<(7 - FRAC_BITS); + v >>= 8 - FRAC_BITS; + } + if(add){ + v += dst[x + y*dst_stride]; + v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS; + if(v&(~255)) v= ~(v>>31); + dst8[x + y*src_stride] = v; + }else{ + dst[x + y*dst_stride] -= v; + } + } + } +#endif +} + +static av_always_inline void predict_slice_buffered(SnowContext *s, slice_buffer * sb, DWTELEM * old_buffer, int plane_index, int add, int mb_y){ + Plane *p= &s->plane[plane_index]; + const int mb_w= s->b_width << s->block_max_depth; + const int mb_h= s->b_height << s->block_max_depth; + int x, y, mb_x; + int block_size = MB_SIZE >> s->block_max_depth; + int block_w = plane_index ? block_size/2 : block_size; + const uint8_t *obmc = plane_index ? obmc_tab[s->block_max_depth+1] : obmc_tab[s->block_max_depth]; + int obmc_stride= plane_index ? block_size : 2*block_size; + int ref_stride= s->current_picture.linesize[plane_index]; + uint8_t *dst8= s->current_picture.data[plane_index]; + int w= p->width; + int h= p->height; + START_TIMER + + if(s->keyframe || (s->avctx->debug&512)){ + if(mb_y==mb_h) + return; + + if(add){ + for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++) + { +// DWTELEM * line = slice_buffer_get_line(sb, y); + DWTELEM * line = sb->line[y]; + for(x=0; x<w; x++) + { +// int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1)); + int v= line[x] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1)); + v >>= FRAC_BITS; + if(v&(~255)) v= ~(v>>31); + dst8[x + y*ref_stride]= v; + } + } + }else{ + for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++) + { +// DWTELEM * line = slice_buffer_get_line(sb, y); + DWTELEM * line = sb->line[y]; + for(x=0; x<w; x++) + { + line[x] -= 128 << FRAC_BITS; +// buf[x + y*w]-= 128<<FRAC_BITS; + } + } + } + + return; + } + + for(mb_x=0; mb_x<=mb_w; mb_x++){ + START_TIMER + + add_yblock(s, 1, sb, old_buffer, dst8, obmc, + block_w*mb_x - block_w/2, + block_w*mb_y - block_w/2, + block_w, block_w, + w, h, + w, ref_stride, obmc_stride, + mb_x - 1, mb_y - 1, + add, 0, plane_index); + + STOP_TIMER("add_yblock") + } + + STOP_TIMER("predict_slice") +} + +static av_always_inline void predict_slice(SnowContext *s, DWTELEM *buf, int plane_index, int add, int mb_y){ + Plane *p= &s->plane[plane_index]; + const int mb_w= s->b_width << s->block_max_depth; + const int mb_h= s->b_height << s->block_max_depth; + int x, y, mb_x; + int block_size = MB_SIZE >> s->block_max_depth; + int block_w = plane_index ? block_size/2 : block_size; + const uint8_t *obmc = plane_index ? obmc_tab[s->block_max_depth+1] : obmc_tab[s->block_max_depth]; + const int obmc_stride= plane_index ? block_size : 2*block_size; + int ref_stride= s->current_picture.linesize[plane_index]; + uint8_t *dst8= s->current_picture.data[plane_index]; + int w= p->width; + int h= p->height; + START_TIMER + + if(s->keyframe || (s->avctx->debug&512)){ + if(mb_y==mb_h) + return; + + if(add){ + for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){ + for(x=0; x<w; x++){ + int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1)); + v >>= FRAC_BITS; + if(v&(~255)) v= ~(v>>31); + dst8[x + y*ref_stride]= v; + } + } + }else{ + for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){ + for(x=0; x<w; x++){ + buf[x + y*w]-= 128<<FRAC_BITS; + } + } + } + + return; + } + + for(mb_x=0; mb_x<=mb_w; mb_x++){ + START_TIMER + + add_yblock(s, 0, NULL, buf, dst8, obmc, + block_w*mb_x - block_w/2, + block_w*mb_y - block_w/2, + block_w, block_w, + w, h, + w, ref_stride, obmc_stride, + mb_x - 1, mb_y - 1, + add, 1, plane_index); + + STOP_TIMER("add_yblock") + } + + STOP_TIMER("predict_slice") +} + +static av_always_inline void predict_plane(SnowContext *s, DWTELEM *buf, int plane_index, int add){ + const int mb_h= s->b_height << s->block_max_depth; + int mb_y; + for(mb_y=0; mb_y<=mb_h; mb_y++) + predict_slice(s, buf, plane_index, add, mb_y); +} + +static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){ + int i, x2, y2; + Plane *p= &s->plane[plane_index]; + const int block_size = MB_SIZE >> s->block_max_depth; + const int block_w = plane_index ? block_size/2 : block_size; + const uint8_t *obmc = plane_index ? obmc_tab[s->block_max_depth+1] : obmc_tab[s->block_max_depth]; + const int obmc_stride= plane_index ? block_size : 2*block_size; + const int ref_stride= s->current_picture.linesize[plane_index]; + uint8_t *src= s-> input_picture.data[plane_index]; + DWTELEM *dst= (DWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4; + const int b_stride = s->b_width << s->block_max_depth; + const int w= p->width; + const int h= p->height; + int index= mb_x + mb_y*b_stride; + BlockNode *b= &s->block[index]; + BlockNode backup= *b; + int ab=0; + int aa=0; + + b->type|= BLOCK_INTRA; + b->color[plane_index]= 0; + memset(dst, 0, obmc_stride*obmc_stride*sizeof(DWTELEM)); + + for(i=0; i<4; i++){ + int mb_x2= mb_x + (i &1) - 1; + int mb_y2= mb_y + (i>>1) - 1; + int x= block_w*mb_x2 + block_w/2; + int y= block_w*mb_y2 + block_w/2; + + add_yblock(s, 0, NULL, dst + ((i&1)+(i>>1)*obmc_stride)*block_w, NULL, obmc, + x, y, block_w, block_w, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index); + + for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_w); y2++){ + for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){ + int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_w*mb_y - block_w/2))*obmc_stride; + int obmc_v= obmc[index]; + int d; + if(y<0) obmc_v += obmc[index + block_w*obmc_stride]; + if(x<0) obmc_v += obmc[index + block_w]; + if(y+block_w>h) obmc_v += obmc[index - block_w*obmc_stride]; + if(x+block_w>w) obmc_v += obmc[index - block_w]; + //FIXME precalc this or simplify it somehow else + + d = -dst[index] + (1<<(FRAC_BITS-1)); + dst[index] = d; + ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v; + aa += obmc_v * obmc_v; //FIXME precalclate this + } + } + } + *b= backup; + + return av_clip(((ab<<LOG2_OBMC_MAX) + aa/2)/aa, 0, 255); //FIXME we shouldnt need cliping +} + +static inline int get_block_bits(SnowContext *s, int x, int y, int w){ + const int b_stride = s->b_width << s->block_max_depth; + const int b_height = s->b_height<< s->block_max_depth; + int index= x + y*b_stride; + const BlockNode *b = &s->block[index]; + const BlockNode *left = x ? &s->block[index-1] : &null_block; + const BlockNode *top = y ? &s->block[index-b_stride] : &null_block; + const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left; + const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl; + int dmx, dmy; +// int mx_context= av_log2(2*FFABS(left->mx - top->mx)); +// int my_context= av_log2(2*FFABS(left->my - top->my)); + + if(x<0 || x>=b_stride || y>=b_height) + return 0; +/* +1 0 0 +01X 1-2 1 +001XX 3-6 2-3 +0001XXX 7-14 4-7 +00001XXXX 15-30 8-15 +*/ +//FIXME try accurate rate +//FIXME intra and inter predictors if surrounding blocks arent the same type + if(b->type & BLOCK_INTRA){ + return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0])) + + av_log2(2*FFABS(left->color[1] - b->color[1])) + + av_log2(2*FFABS(left->color[2] - b->color[2]))); + }else{ + pred_mv(s, &dmx, &dmy, b->ref, left, top, tr); + dmx-= b->mx; + dmy-= b->my; + return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda + + av_log2(2*FFABS(dmy)) + + av_log2(2*b->ref)); + } +} + +static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, const uint8_t *obmc_edged){ + Plane *p= &s->plane[plane_index]; + const int block_size = MB_SIZE >> s->block_max_depth; + const int block_w = plane_index ? block_size/2 : block_size; + const int obmc_stride= plane_index ? block_size : 2*block_size; + const int ref_stride= s->current_picture.linesize[plane_index]; + uint8_t *dst= s->current_picture.data[plane_index]; + uint8_t *src= s-> input_picture.data[plane_index]; + DWTELEM *pred= (DWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4; + uint8_t cur[ref_stride*2*MB_SIZE]; //FIXME alignment + uint8_t tmp[ref_stride*(2*MB_SIZE+5)]; + const int b_stride = s->b_width << s->block_max_depth; + const int b_height = s->b_height<< s->block_max_depth; + const int w= p->width; + const int h= p->height; + int distortion; + int rate= 0; + const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp); + int sx= block_w*mb_x - block_w/2; + int sy= block_w*mb_y - block_w/2; + int x0= FFMAX(0,-sx); + int y0= FFMAX(0,-sy); + int x1= FFMIN(block_w*2, w-sx); + int y1= FFMIN(block_w*2, h-sy); + int i,x,y; + + pred_block(s, cur, tmp, ref_stride, sx, sy, block_w*2, block_w*2, &s->block[mb_x + mb_y*b_stride], plane_index, w, h); + + for(y=y0; y<y1; y++){ + const uint8_t *obmc1= obmc_edged + y*obmc_stride; + const DWTELEM *pred1 = pred + y*obmc_stride; + uint8_t *cur1 = cur + y*ref_stride; + uint8_t *dst1 = dst + sx + (sy+y)*ref_stride; + for(x=x0; x<x1; x++){ + int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX); + v = (v + pred1[x]) >> FRAC_BITS; + if(v&(~255)) v= ~(v>>31); + dst1[x] = v; + } + } + + /* copy the regions where obmc[] = (uint8_t)256 */ + if(LOG2_OBMC_MAX == 8 + && (mb_x == 0 || mb_x == b_stride-1) + && (mb_y == 0 || mb_y == b_height-1)){ + if(mb_x == 0) + x1 = block_w; + else + x0 = block_w; + if(mb_y == 0) + y1 = block_w; + else + y0 = block_w; + for(y=y0; y<y1; y++) + memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0); + } + + if(block_w==16){ + /* FIXME rearrange dsputil to fit 32x32 cmp functions */ + /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */ + /* FIXME cmps overlap but don't cover the wavelet's whole support, + * so improving the score of one block is not strictly guaranteed to + * improve the score of the whole frame, so iterative motion est + * doesn't always converge. */ + if(s->avctx->me_cmp == FF_CMP_W97) + distortion = w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32); + else if(s->avctx->me_cmp == FF_CMP_W53) + distortion = w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32); + else{ + distortion = 0; + for(i=0; i<4; i++){ + int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride; + distortion += s->dsp.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16); + } + } + }else{ + assert(block_w==8); + distortion = s->dsp.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2); + } + + if(plane_index==0){ + for(i=0; i<4; i++){ +/* ..RRr + * .RXx. + * rxx.. + */ + rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1); + } + if(mb_x == b_stride-2) + rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1); + } + return distortion + rate*penalty_factor; +} + +static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){ + int i, y2; + Plane *p= &s->plane[plane_index]; + const int block_size = MB_SIZE >> s->block_max_depth; + const int block_w = plane_index ? block_size/2 : block_size; + const uint8_t *obmc = plane_index ? obmc_tab[s->block_max_depth+1] : obmc_tab[s->block_max_depth]; + const int obmc_stride= plane_index ? block_size : 2*block_size; + const int ref_stride= s->current_picture.linesize[plane_index]; + uint8_t *dst= s->current_picture.data[plane_index]; + uint8_t *src= s-> input_picture.data[plane_index]; + static const DWTELEM zero_dst[4096]; //FIXME + const int b_stride = s->b_width << s->block_max_depth; + const int w= p->width; + const int h= p->height; + int distortion= 0; + int rate= 0; + const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp); + + for(i=0; i<9; i++){ + int mb_x2= mb_x + (i%3) - 1; + int mb_y2= mb_y + (i/3) - 1; + int x= block_w*mb_x2 + block_w/2; + int y= block_w*mb_y2 + block_w/2; + + add_yblock(s, 0, NULL, zero_dst, dst, obmc, + x, y, block_w, block_w, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index); + + //FIXME find a cleaner/simpler way to skip the outside stuff + for(y2= y; y2<0; y2++) + memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w); + for(y2= h; y2<y+block_w; y2++) + memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w); + if(x<0){ + for(y2= y; y2<y+block_w; y2++) + memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x); + } + if(x+block_w > w){ + for(y2= y; y2<y+block_w; y2++) + memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w); + } + + assert(block_w== 8 || block_w==16); + distortion += s->dsp.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_w); + } + + if(plane_index==0){ + BlockNode *b= &s->block[mb_x+mb_y*b_stride]; + int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1); + +/* ..RRRr + * .RXXx. + * .RXXx. + * rxxx. + */ + if(merged) + rate = get_block_bits(s, mb_x, mb_y, 2); + for(i=merged?4:0; i<9; i++){ + static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}}; + rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1); + } + } + return distortion + rate*penalty_factor; +} + +static av_always_inline int check_block(SnowContext *s, int mb_x, int mb_y, int p[3], int intra, const uint8_t *obmc_edged, int *best_rd){ + const int b_stride= s->b_width << s->block_max_depth; + BlockNode *block= &s->block[mb_x + mb_y * b_stride]; + BlockNode backup= *block; + int rd, index, value; + + assert(mb_x>=0 && mb_y>=0); + assert(mb_x<b_stride); + + if(intra){ + block->color[0] = p[0]; + block->color[1] = p[1]; + block->color[2] = p[2]; + block->type |= BLOCK_INTRA; + }else{ + index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1); + value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12); + if(s->me_cache[index] == value) + return 0; + s->me_cache[index]= value; + + block->mx= p[0]; + block->my= p[1]; + block->type &= ~BLOCK_INTRA; + } + + rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged); + +//FIXME chroma + if(rd < *best_rd){ + *best_rd= rd; + return 1; + }else{ + *block= backup; + return 0; + } +} + +/* special case for int[2] args we discard afterward, fixes compilation prob with gcc 2.95 */ +static av_always_inline int check_block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, const uint8_t *obmc_edged, int *best_rd){ + int p[2] = {p0, p1}; + return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd); +} + +static av_always_inline int check_4block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, int ref, int *best_rd){ + const int b_stride= s->b_width << s->block_max_depth; + BlockNode *block= &s->block[mb_x + mb_y * b_stride]; + BlockNode backup[4]= {block[0], block[1], block[b_stride], block[b_stride+1]}; + int rd, index, value; + + assert(mb_x>=0 && mb_y>=0); + assert(mb_x<b_stride); + assert(((mb_x|mb_y)&1) == 0); + + index= (p0 + 31*p1) & (ME_CACHE_SIZE-1); + value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12); + if(s->me_cache[index] == value) + return 0; + s->me_cache[index]= value; + + block->mx= p0; + block->my= p1; + block->ref= ref; + block->type &= ~BLOCK_INTRA; + block[1]= block[b_stride]= block[b_stride+1]= *block; + + rd= get_4block_rd(s, mb_x, mb_y, 0); + +//FIXME chroma + if(rd < *best_rd){ + *best_rd= rd; + return 1; + }else{ + block[0]= backup[0]; + block[1]= backup[1]; + block[b_stride]= backup[2]; + block[b_stride+1]= backup[3]; + return 0; + } +} + +static void iterative_me(SnowContext *s){ + int pass, mb_x, mb_y; + const int b_width = s->b_width << s->block_max_depth; + const int b_height= s->b_height << s->block_max_depth; + const int b_stride= b_width; + int color[3]; + + { + RangeCoder r = s->c; + uint8_t state[sizeof(s->block_state)]; + memcpy(state, s->block_state, sizeof(s->block_state)); + for(mb_y= 0; mb_y<s->b_height; mb_y++) + for(mb_x= 0; mb_x<s->b_width; mb_x++) + encode_q_branch(s, 0, mb_x, mb_y); + s->c = r; + memcpy(s->block_state, state, sizeof(s->block_state)); + } + + for(pass=0; pass<25; pass++){ + int change= 0; + + for(mb_y= 0; mb_y<b_height; mb_y++){ + for(mb_x= 0; mb_x<b_width; mb_x++){ + int dia_change, i, j, ref; + int best_rd= INT_MAX, ref_rd; + BlockNode backup, ref_b; + const int index= mb_x + mb_y * b_stride; + BlockNode *block= &s->block[index]; + BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL; + BlockNode *lb = mb_x ? &s->block[index -1] : NULL; + BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL; + BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL; + BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL; + BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL; + BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL; + BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL; + const int b_w= (MB_SIZE >> s->block_max_depth); + uint8_t obmc_edged[b_w*2][b_w*2]; + + if(pass && (block->type & BLOCK_OPT)) + continue; + block->type |= BLOCK_OPT; + + backup= *block; + + if(!s->me_cache_generation) + memset(s->me_cache, 0, sizeof(s->me_cache)); + s->me_cache_generation += 1<<22; + + //FIXME precalc + { + int x, y; + memcpy(obmc_edged, obmc_tab[s->block_max_depth], b_w*b_w*4); + if(mb_x==0) + for(y=0; y<b_w*2; y++) + memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w); + if(mb_x==b_stride-1) + for(y=0; y<b_w*2; y++) + memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w); + if(mb_y==0){ + for(x=0; x<b_w*2; x++) + obmc_edged[0][x] += obmc_edged[b_w-1][x]; + for(y=1; y<b_w; y++) + memcpy(obmc_edged[y], obmc_edged[0], b_w*2); + } + if(mb_y==b_height-1){ + for(x=0; x<b_w*2; x++) + obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x]; + for(y=b_w; y<b_w*2-1; y++) + memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2); + } + } + + //skip stuff outside the picture + if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1) + { + uint8_t *src= s-> input_picture.data[0]; + uint8_t *dst= s->current_picture.data[0]; + const int stride= s->current_picture.linesize[0]; + const int block_w= MB_SIZE >> s->block_max_depth; + const int sx= block_w*mb_x - block_w/2; + const int sy= block_w*mb_y - block_w/2; + const int w= s->plane[0].width; + const int h= s->plane[0].height; + int y; + + for(y=sy; y<0; y++) + memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2); + for(y=h; y<sy+block_w*2; y++) + memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2); + if(sx<0){ + for(y=sy; y<sy+block_w*2; y++) + memcpy(dst + sx + y*stride, src + sx + y*stride, -sx); + } + if(sx+block_w*2 > w){ + for(y=sy; y<sy+block_w*2; y++) + memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w); + } + } + + // intra(black) = neighbors' contribution to the current block + for(i=0; i<3; i++) + color[i]= get_dc(s, mb_x, mb_y, i); + + // get previous score (cant be cached due to OBMC) + if(pass > 0 && (block->type&BLOCK_INTRA)){ + int color0[3]= {block->color[0], block->color[1], block->color[2]}; + check_block(s, mb_x, mb_y, color0, 1, *obmc_edged, &best_rd); + }else + check_block_inter(s, mb_x, mb_y, block->mx, block->my, *obmc_edged, &best_rd); + + ref_b= *block; + ref_rd= best_rd; + for(ref=0; ref < s->ref_frames; ref++){ + int16_t (*mvr)[2]= &s->ref_mvs[ref][index]; + if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold + continue; + block->ref= ref; + best_rd= INT_MAX; + + check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], *obmc_edged, &best_rd); + check_block_inter(s, mb_x, mb_y, 0, 0, *obmc_edged, &best_rd); + if(tb) + check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], *obmc_edged, &best_rd); + if(lb) + check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], *obmc_edged, &best_rd); + if(rb) + check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], *obmc_edged, &best_rd); + if(bb) + check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], *obmc_edged, &best_rd); + + /* fullpel ME */ + //FIXME avoid subpel interpol / round to nearest integer + do{ + dia_change=0; + for(i=0; i<FFMAX(s->avctx->dia_size, 1); i++){ + for(j=0; j<i; j++){ + dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my+(4*j), *obmc_edged, &best_rd); + dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my-(4*j), *obmc_edged, &best_rd); + dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my-(4*j), *obmc_edged, &best_rd); + dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my+(4*j), *obmc_edged, &best_rd); + } + } + }while(dia_change); + /* subpel ME */ + do{ + static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},}; + dia_change=0; + for(i=0; i<8; i++) + dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], *obmc_edged, &best_rd); + }while(dia_change); + //FIXME or try the standard 2 pass qpel or similar + + mvr[0][0]= block->mx; + mvr[0][1]= block->my; + if(ref_rd > best_rd){ + ref_rd= best_rd; + ref_b= *block; + } + } + best_rd= ref_rd; + *block= ref_b; +#if 1 + check_block(s, mb_x, mb_y, color, 1, *obmc_edged, &best_rd); + //FIXME RD style color selection +#endif + if(!same_block(block, &backup)){ + if(tb ) tb ->type &= ~BLOCK_OPT; + if(lb ) lb ->type &= ~BLOCK_OPT; + if(rb ) rb ->type &= ~BLOCK_OPT; + if(bb ) bb ->type &= ~BLOCK_OPT; + if(tlb) tlb->type &= ~BLOCK_OPT; + if(trb) trb->type &= ~BLOCK_OPT; + if(blb) blb->type &= ~BLOCK_OPT; + if(brb) brb->type &= ~BLOCK_OPT; + change ++; + } + } + } + av_log(NULL, AV_LOG_ERROR, "pass:%d changed:%d\n", pass, change); + if(!change) + break; + } + + if(s->block_max_depth == 1){ + int change= 0; + for(mb_y= 0; mb_y<b_height; mb_y+=2){ + for(mb_x= 0; mb_x<b_width; mb_x+=2){ + int i; + int best_rd, init_rd; + const int index= mb_x + mb_y * b_stride; + BlockNode *b[4]; + + b[0]= &s->block[index]; + b[1]= b[0]+1; + b[2]= b[0]+b_stride; + b[3]= b[2]+1; + if(same_block(b[0], b[1]) && + same_block(b[0], b[2]) && + same_block(b[0], b[3])) + continue; + + if(!s->me_cache_generation) + memset(s->me_cache, 0, sizeof(s->me_cache)); + s->me_cache_generation += 1<<22; + + init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0); + + //FIXME more multiref search? + check_4block_inter(s, mb_x, mb_y, + (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2, + (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd); + + for(i=0; i<4; i++) + if(!(b[i]->type&BLOCK_INTRA)) + check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd); + + if(init_rd != best_rd) + change++; + } + } + av_log(NULL, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4); + } +} + +static void quantize(SnowContext *s, SubBand *b, DWTELEM *src, int stride, int bias){ + const int level= b->level; + const int w= b->width; + const int h= b->height; + const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16); + const int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT); + int x,y, thres1, thres2; +// START_TIMER + + if(s->qlog == LOSSLESS_QLOG) return; + + bias= bias ? 0 : (3*qmul)>>3; + thres1= ((qmul - bias)>>QEXPSHIFT) - 1; + thres2= 2*thres1; + + if(!bias){ + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int i= src[x + y*stride]; + + if((unsigned)(i+thres1) > thres2){ + if(i>=0){ + i<<= QEXPSHIFT; + i/= qmul; //FIXME optimize + src[x + y*stride]= i; + }else{ + i= -i; + i<<= QEXPSHIFT; + i/= qmul; //FIXME optimize + src[x + y*stride]= -i; + } + }else + src[x + y*stride]= 0; + } + } + }else{ + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int i= src[x + y*stride]; + + if((unsigned)(i+thres1) > thres2){ + if(i>=0){ + i<<= QEXPSHIFT; + i= (i + bias) / qmul; //FIXME optimize + src[x + y*stride]= i; + }else{ + i= -i; + i<<= QEXPSHIFT; + i= (i + bias) / qmul; //FIXME optimize + src[x + y*stride]= -i; + } + }else + src[x + y*stride]= 0; + } + } + } + if(level+1 == s->spatial_decomposition_count){ +// STOP_TIMER("quantize") + } +} + +static void dequantize_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, DWTELEM *src, int stride, int start_y, int end_y){ + const int w= b->width; + const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16); + const int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT); + const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT; + int x,y; + START_TIMER + + if(s->qlog == LOSSLESS_QLOG) return; + + for(y=start_y; y<end_y; y++){ +// DWTELEM * line = slice_buffer_get_line_from_address(sb, src + (y * stride)); + DWTELEM * line = slice_buffer_get_line(sb, (y * b->stride_line) + b->buf_y_offset) + b->buf_x_offset; + for(x=0; x<w; x++){ + int i= line[x]; + if(i<0){ + line[x]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias + }else if(i>0){ + line[x]= (( i*qmul + qadd)>>(QEXPSHIFT)); + } + } + } + if(w > 200 /*level+1 == s->spatial_decomposition_count*/){ + STOP_TIMER("dquant") + } +} + +static void dequantize(SnowContext *s, SubBand *b, DWTELEM *src, int stride){ + const int w= b->width; + const int h= b->height; + const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16); + const int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT); + const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT; + int x,y; + START_TIMER + + if(s->qlog == LOSSLESS_QLOG) return; + + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int i= src[x + y*stride]; + if(i<0){ + src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias + }else if(i>0){ + src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT)); + } + } + } + if(w > 200 /*level+1 == s->spatial_decomposition_count*/){ + STOP_TIMER("dquant") + } +} + +static void decorrelate(SnowContext *s, SubBand *b, DWTELEM *src, int stride, int inverse, int use_median){ + const int w= b->width; + const int h= b->height; + int x,y; + + for(y=h-1; y>=0; y--){ + for(x=w-1; x>=0; x--){ + int i= x + y*stride; + + if(x){ + if(use_median){ + if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]); + else src[i] -= src[i - 1]; + }else{ + if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]); + else src[i] -= src[i - 1]; + } + }else{ + if(y) src[i] -= src[i - stride]; + } + } + } +} + +static void correlate_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, DWTELEM *src, int stride, int inverse, int use_median, int start_y, int end_y){ + const int w= b->width; + int x,y; + +// START_TIMER + + DWTELEM * line=0; // silence silly "could be used without having been initialized" warning + DWTELEM * prev; + + if (start_y != 0) + line = slice_buffer_get_line(sb, ((start_y - 1) * b->stride_line) + b->buf_y_offset) + b->buf_x_offset; + + for(y=start_y; y<end_y; y++){ + prev = line; +// line = slice_buffer_get_line_from_address(sb, src + (y * stride)); + line = slice_buffer_get_line(sb, (y * b->stride_line) + b->buf_y_offset) + b->buf_x_offset; + for(x=0; x<w; x++){ + if(x){ + if(use_median){ + if(y && x+1<w) line[x] += mid_pred(line[x - 1], prev[x], prev[x + 1]); + else line[x] += line[x - 1]; + }else{ + if(y) line[x] += mid_pred(line[x - 1], prev[x], line[x - 1] + prev[x] - prev[x - 1]); + else line[x] += line[x - 1]; + } + }else{ + if(y) line[x] += prev[x]; + } + } + } + +// STOP_TIMER("correlate") +} + +static void correlate(SnowContext *s, SubBand *b, DWTELEM *src, int stride, int inverse, int use_median){ + const int w= b->width; + const int h= b->height; + int x,y; + + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int i= x + y*stride; + + if(x){ + if(use_median){ + if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]); + else src[i] += src[i - 1]; + }else{ + if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]); + else src[i] += src[i - 1]; + } + }else{ + if(y) src[i] += src[i - stride]; + } + } + } +} + +static void encode_header(SnowContext *s){ + int plane_index, level, orientation; + uint8_t kstate[32]; + + memset(kstate, MID_STATE, sizeof(kstate)); + + put_rac(&s->c, kstate, s->keyframe); + if(s->keyframe || s->always_reset){ + reset_contexts(s); + s->last_spatial_decomposition_type= + s->last_qlog= + s->last_qbias= + s->last_mv_scale= + s->last_block_max_depth= 0; + } + if(s->keyframe){ + put_symbol(&s->c, s->header_state, s->version, 0); + put_rac(&s->c, s->header_state, s->always_reset); + put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0); + put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0); + put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0); + put_symbol(&s->c, s->header_state, s->colorspace_type, 0); + put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0); + put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0); + put_rac(&s->c, s->header_state, s->spatial_scalability); +// put_rac(&s->c, s->header_state, s->rate_scalability); + put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0); + + for(plane_index=0; plane_index<2; plane_index++){ + for(level=0; level<s->spatial_decomposition_count; level++){ + for(orientation=level ? 1:0; orientation<4; orientation++){ + if(orientation==2) continue; + put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1); + } + } + } + } + put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1); + put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1); + put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1); + put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1); + put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1); + + s->last_spatial_decomposition_type= s->spatial_decomposition_type; + s->last_qlog = s->qlog; + s->last_qbias = s->qbias; + s->last_mv_scale = s->mv_scale; + s->last_block_max_depth = s->block_max_depth; +} + +static int decode_header(SnowContext *s){ + int plane_index, level, orientation; + uint8_t kstate[32]; + + memset(kstate, MID_STATE, sizeof(kstate)); + + s->keyframe= get_rac(&s->c, kstate); + if(s->keyframe || s->always_reset){ + reset_contexts(s); + s->spatial_decomposition_type= + s->qlog= + s->qbias= + s->mv_scale= + s->block_max_depth= 0; + } + if(s->keyframe){ + s->version= get_symbol(&s->c, s->header_state, 0); + if(s->version>0){ + av_log(s->avctx, AV_LOG_ERROR, "version %d not supported", s->version); + return -1; + } + s->always_reset= get_rac(&s->c, s->header_state); + s->temporal_decomposition_type= get_symbol(&s->c, s->header_state, 0); + s->temporal_decomposition_count= get_symbol(&s->c, s->header_state, 0); + s->spatial_decomposition_count= get_symbol(&s->c, s->header_state, 0); + s->colorspace_type= get_symbol(&s->c, s->header_state, 0); + s->chroma_h_shift= get_symbol(&s->c, s->header_state, 0); + s->chroma_v_shift= get_symbol(&s->c, s->header_state, 0); + s->spatial_scalability= get_rac(&s->c, s->header_state); +// s->rate_scalability= get_rac(&s->c, s->header_state); + s->max_ref_frames= get_symbol(&s->c, s->header_state, 0)+1; + + for(plane_index=0; plane_index<3; plane_index++){ + for(level=0; level<s->spatial_decomposition_count; level++){ + for(orientation=level ? 1:0; orientation<4; orientation++){ + int q; + if (plane_index==2) q= s->plane[1].band[level][orientation].qlog; + else if(orientation==2) q= s->plane[plane_index].band[level][1].qlog; + else q= get_symbol(&s->c, s->header_state, 1); + s->plane[plane_index].band[level][orientation].qlog= q; + } + } + } + } + + s->spatial_decomposition_type+= get_symbol(&s->c, s->header_state, 1); + if(s->spatial_decomposition_type > 2){ + av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_type %d not supported", s->spatial_decomposition_type); + return -1; + } + + s->qlog += get_symbol(&s->c, s->header_state, 1); + s->mv_scale += get_symbol(&s->c, s->header_state, 1); + s->qbias += get_symbol(&s->c, s->header_state, 1); + s->block_max_depth+= get_symbol(&s->c, s->header_state, 1); + if(s->block_max_depth > 1 || s->block_max_depth < 0){ + av_log(s->avctx, AV_LOG_ERROR, "block_max_depth= %d is too large", s->block_max_depth); + s->block_max_depth= 0; + return -1; + } + + return 0; +} + +static void init_qexp(void){ + int i; + double v=128; + + for(i=0; i<QROOT; i++){ + qexp[i]= lrintf(v); + v *= pow(2, 1.0 / QROOT); + } +} + +static int common_init(AVCodecContext *avctx){ + SnowContext *s = avctx->priv_data; + int width, height; + int level, orientation, plane_index, dec; + int i, j; + + s->avctx= avctx; + + dsputil_init(&s->dsp, avctx); + +#define mcf(dx,dy)\ + s->dsp.put_qpel_pixels_tab [0][dy+dx/4]=\ + s->dsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\ + s->dsp.put_h264_qpel_pixels_tab[0][dy+dx/4];\ + s->dsp.put_qpel_pixels_tab [1][dy+dx/4]=\ + s->dsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\ + s->dsp.put_h264_qpel_pixels_tab[1][dy+dx/4]; + + mcf( 0, 0) + mcf( 4, 0) + mcf( 8, 0) + mcf(12, 0) + mcf( 0, 4) + mcf( 4, 4) + mcf( 8, 4) + mcf(12, 4) + mcf( 0, 8) + mcf( 4, 8) + mcf( 8, 8) + mcf(12, 8) + mcf( 0,12) + mcf( 4,12) + mcf( 8,12) + mcf(12,12) + +#define mcfh(dx,dy)\ + s->dsp.put_pixels_tab [0][dy/4+dx/8]=\ + s->dsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\ + mc_block_hpel ## dx ## dy ## 16;\ + s->dsp.put_pixels_tab [1][dy/4+dx/8]=\ + s->dsp.put_no_rnd_pixels_tab[1][dy/4+dx/8]=\ + mc_block_hpel ## dx ## dy ## 8; + + mcfh(0, 0) + mcfh(8, 0) + mcfh(0, 8) + mcfh(8, 8) + + if(!qexp[0]) + init_qexp(); + + dec= s->spatial_decomposition_count= 5; + s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type + + s->chroma_h_shift= 1; //FIXME XXX + s->chroma_v_shift= 1; + +// dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift); + + width= s->avctx->width; + height= s->avctx->height; + + s->spatial_dwt_buffer= av_mallocz(width*height*sizeof(DWTELEM)); + + s->mv_scale= (s->avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4; + s->block_max_depth= (s->avctx->flags & CODEC_FLAG_4MV) ? 1 : 0; + + for(plane_index=0; plane_index<3; plane_index++){ + int w= s->avctx->width; + int h= s->avctx->height; + + if(plane_index){ + w>>= s->chroma_h_shift; + h>>= s->chroma_v_shift; + } + s->plane[plane_index].width = w; + s->plane[plane_index].height= h; +//av_log(NULL, AV_LOG_DEBUG, "%d %d\n", w, h); + for(level=s->spatial_decomposition_count-1; level>=0; level--){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &s->plane[plane_index].band[level][orientation]; + + b->buf= s->spatial_dwt_buffer; + b->level= level; + b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level); + b->width = (w + !(orientation&1))>>1; + b->height= (h + !(orientation>1))>>1; + + b->stride_line = 1 << (s->spatial_decomposition_count - level); + b->buf_x_offset = 0; + b->buf_y_offset = 0; + + if(orientation&1){ + b->buf += (w+1)>>1; + b->buf_x_offset = (w+1)>>1; + } + if(orientation>1){ + b->buf += b->stride>>1; + b->buf_y_offset = b->stride_line >> 1; + } + + if(level) + b->parent= &s->plane[plane_index].band[level-1][orientation]; + b->x_coeff=av_mallocz(((b->width+1) * b->height+1)*sizeof(x_and_coeff)); + } + w= (w+1)>>1; + h= (h+1)>>1; + } + } + + for(i=0; i<MAX_REF_FRAMES; i++) + for(j=0; j<MAX_REF_FRAMES; j++) + scale_mv_ref[i][j] = 256*(i+1)/(j+1); + + reset_contexts(s); +/* + width= s->width= avctx->width; + height= s->height= avctx->height; + + assert(width && height); +*/ + s->avctx->get_buffer(s->avctx, &s->mconly_picture); + + return 0; +} + +static int qscale2qlog(int qscale){ + return rint(QROOT*log(qscale / (float)FF_QP2LAMBDA)/log(2)) + + 61*QROOT/8; //<64 >60 +} + +static int ratecontrol_1pass(SnowContext *s, AVFrame *pict) +{ + /* estimate the frame's complexity as a sum of weighted dwt coefs. + * FIXME we know exact mv bits at this point, + * but ratecontrol isn't set up to include them. */ + uint32_t coef_sum= 0; + int level, orientation, delta_qlog; + + for(level=0; level<s->spatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &s->plane[0].band[level][orientation]; + DWTELEM *buf= b->buf; + const int w= b->width; + const int h= b->height; + const int stride= b->stride; + const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16); + const int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT); + const int qdiv= (1<<16)/qmul; + int x, y; + if(orientation==0) + decorrelate(s, b, buf, stride, 1, 0); + for(y=0; y<h; y++) + for(x=0; x<w; x++) + coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16; + if(orientation==0) + correlate(s, b, buf, stride, 1, 0); + } + } + + /* ugly, ratecontrol just takes a sqrt again */ + coef_sum = (uint64_t)coef_sum * coef_sum >> 16; + assert(coef_sum < INT_MAX); + + if(pict->pict_type == I_TYPE){ + s->m.current_picture.mb_var_sum= coef_sum; + s->m.current_picture.mc_mb_var_sum= 0; + }else{ + s->m.current_picture.mc_mb_var_sum= coef_sum; + s->m.current_picture.mb_var_sum= 0; + } + + pict->quality= ff_rate_estimate_qscale(&s->m, 1); + if (pict->quality < 0) + return INT_MIN; + s->lambda= pict->quality * 3/2; + delta_qlog= qscale2qlog(pict->quality) - s->qlog; + s->qlog+= delta_qlog; + return delta_qlog; +} + +static void calculate_vissual_weight(SnowContext *s, Plane *p){ + int width = p->width; + int height= p->height; + int level, orientation, x, y; + + for(level=0; level<s->spatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + DWTELEM *buf= b->buf; + int64_t error=0; + + memset(s->spatial_dwt_buffer, 0, sizeof(int)*width*height); + buf[b->width/2 + b->height/2*b->stride]= 256*256; + ff_spatial_idwt(s->spatial_dwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count); + for(y=0; y<height; y++){ + for(x=0; x<width; x++){ + int64_t d= s->spatial_dwt_buffer[x + y*width]; + error += d*d; + } + } + + b->qlog= (int)(log(352256.0/sqrt(error)) / log(pow(2.0, 1.0/QROOT))+0.5); +// av_log(NULL, AV_LOG_DEBUG, "%d %d %d\n", level, orientation, b->qlog/*, sqrt(error)*/); + } + } +} + +static int encode_init(AVCodecContext *avctx) +{ + SnowContext *s = avctx->priv_data; + int plane_index; + + if(avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){ + av_log(avctx, AV_LOG_ERROR, "this codec is under development, files encoded with it may not be decodable with future versions!!!\n" + "use vstrict=-2 / -strict -2 to use it anyway\n"); + return -1; + } + + if(avctx->prediction_method == DWT_97 + && (avctx->flags & CODEC_FLAG_QSCALE) + && avctx->global_quality == 0){ + av_log(avctx, AV_LOG_ERROR, "the 9/7 wavelet is incompatible with lossless mode\n"); + return -1; + } + + common_init(avctx); + alloc_blocks(s); + + s->version=0; + + s->m.avctx = avctx; + s->m.flags = avctx->flags; + s->m.bit_rate= avctx->bit_rate; + + s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t)); + s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t)); + s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t)); + s->m.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t)); + h263_encode_init(&s->m); //mv_penalty + + s->max_ref_frames = FFMAX(FFMIN(avctx->refs, MAX_REF_FRAMES), 1); + + if(avctx->flags&CODEC_FLAG_PASS1){ + if(!avctx->stats_out) + avctx->stats_out = av_mallocz(256); + } + if((avctx->flags&CODEC_FLAG_PASS2) || !(avctx->flags&CODEC_FLAG_QSCALE)){ + if(ff_rate_control_init(&s->m) < 0) + return -1; + } + s->pass1_rc= !(avctx->flags & (CODEC_FLAG_QSCALE|CODEC_FLAG_PASS2)); + + for(plane_index=0; plane_index<3; plane_index++){ + calculate_vissual_weight(s, &s->plane[plane_index]); + } + + + avctx->coded_frame= &s->current_picture; + switch(avctx->pix_fmt){ +// case PIX_FMT_YUV444P: +// case PIX_FMT_YUV422P: + case PIX_FMT_YUV420P: + case PIX_FMT_GRAY8: +// case PIX_FMT_YUV411P: +// case PIX_FMT_YUV410P: + s->colorspace_type= 0; + break; +/* case PIX_FMT_RGB32: + s->colorspace= 1; + break;*/ + default: + av_log(avctx, AV_LOG_ERROR, "format not supported\n"); + return -1; + } +// avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift); + s->chroma_h_shift= 1; + s->chroma_v_shift= 1; + + ff_set_cmp(&s->dsp, s->dsp.me_cmp, s->avctx->me_cmp); + ff_set_cmp(&s->dsp, s->dsp.me_sub_cmp, s->avctx->me_sub_cmp); + + s->avctx->get_buffer(s->avctx, &s->input_picture); + + if(s->avctx->me_method == ME_ITER){ + int i; + int size= s->b_width * s->b_height << 2*s->block_max_depth; + for(i=0; i<s->max_ref_frames; i++){ + s->ref_mvs[i]= av_mallocz(size*sizeof(int16_t[2])); + s->ref_scores[i]= av_mallocz(size*sizeof(uint32_t)); + } + } + + return 0; +} + +static int frame_start(SnowContext *s){ + AVFrame tmp; + int w= s->avctx->width; //FIXME round up to x16 ? + int h= s->avctx->height; + + if(s->current_picture.data[0]){ + draw_edges(s->current_picture.data[0], s->current_picture.linesize[0], w , h , EDGE_WIDTH ); + draw_edges(s->current_picture.data[1], s->current_picture.linesize[1], w>>1, h>>1, EDGE_WIDTH/2); + draw_edges(s->current_picture.data[2], s->current_picture.linesize[2], w>>1, h>>1, EDGE_WIDTH/2); + } + + tmp= s->last_picture[s->max_ref_frames-1]; + memmove(s->last_picture+1, s->last_picture, (s->max_ref_frames-1)*sizeof(AVFrame)); + s->last_picture[0]= s->current_picture; + s->current_picture= tmp; + + if(s->keyframe){ + s->ref_frames= 0; + }else{ + int i; + for(i=0; i<s->max_ref_frames && s->last_picture[i].data[0]; i++) + if(i && s->last_picture[i-1].key_frame) + break; + s->ref_frames= i; + } + + s->current_picture.reference= 1; + if(s->avctx->get_buffer(s->avctx, &s->current_picture) < 0){ + av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + return -1; + } + + s->current_picture.key_frame= s->keyframe; + + return 0; +} + +static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ + SnowContext *s = avctx->priv_data; + RangeCoder * const c= &s->c; + AVFrame *pict = data; + const int width= s->avctx->width; + const int height= s->avctx->height; + int level, orientation, plane_index, i, y; + uint8_t rc_header_bak[sizeof(s->header_state)]; + uint8_t rc_block_bak[sizeof(s->block_state)]; + + ff_init_range_encoder(c, buf, buf_size); + ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); + + for(i=0; i<3; i++){ + int shift= !!i; + for(y=0; y<(height>>shift); y++) + memcpy(&s->input_picture.data[i][y * s->input_picture.linesize[i]], + &pict->data[i][y * pict->linesize[i]], + width>>shift); + } + s->new_picture = *pict; + + s->m.picture_number= avctx->frame_number; + if(avctx->flags&CODEC_FLAG_PASS2){ + s->m.pict_type = + pict->pict_type= s->m.rc_context.entry[avctx->frame_number].new_pict_type; + s->keyframe= pict->pict_type==FF_I_TYPE; + if(!(avctx->flags&CODEC_FLAG_QSCALE)) { + pict->quality= ff_rate_estimate_qscale(&s->m, 0); + if (pict->quality < 0) + return -1; + } + }else{ + s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0; + s->m.pict_type= + pict->pict_type= s->keyframe ? FF_I_TYPE : FF_P_TYPE; + } + + if(s->pass1_rc && avctx->frame_number == 0) + pict->quality= 2*FF_QP2LAMBDA; + if(pict->quality){ + s->qlog= qscale2qlog(pict->quality); + s->lambda = pict->quality * 3/2; + } + if(s->qlog < 0 || (!pict->quality && (avctx->flags & CODEC_FLAG_QSCALE))){ + s->qlog= LOSSLESS_QLOG; + s->lambda = 0; + }//else keep previous frame's qlog until after motion est + + frame_start(s); + + s->m.current_picture_ptr= &s->m.current_picture; + if(pict->pict_type == P_TYPE){ + int block_width = (width +15)>>4; + int block_height= (height+15)>>4; + int stride= s->current_picture.linesize[0]; + + assert(s->current_picture.data[0]); + assert(s->last_picture[0].data[0]); + + s->m.avctx= s->avctx; + s->m.current_picture.data[0]= s->current_picture.data[0]; + s->m. last_picture.data[0]= s->last_picture[0].data[0]; + s->m. new_picture.data[0]= s-> input_picture.data[0]; + s->m. last_picture_ptr= &s->m. last_picture; + s->m.linesize= + s->m. last_picture.linesize[0]= + s->m. new_picture.linesize[0]= + s->m.current_picture.linesize[0]= stride; + s->m.uvlinesize= s->current_picture.linesize[1]; + s->m.width = width; + s->m.height= height; + s->m.mb_width = block_width; + s->m.mb_height= block_height; + s->m.mb_stride= s->m.mb_width+1; + s->m.b8_stride= 2*s->m.mb_width+1; + s->m.f_code=1; + s->m.pict_type= pict->pict_type; + s->m.me_method= s->avctx->me_method; + s->m.me.scene_change_score=0; + s->m.flags= s->avctx->flags; + s->m.quarter_sample= (s->avctx->flags & CODEC_FLAG_QPEL)!=0; + s->m.out_format= FMT_H263; + s->m.unrestricted_mv= 1; + + s->m.lambda = s->lambda; + s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7); + s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT; + + s->m.dsp= s->dsp; //move + ff_init_me(&s->m); + s->dsp= s->m.dsp; + } + + if(s->pass1_rc){ + memcpy(rc_header_bak, s->header_state, sizeof(s->header_state)); + memcpy(rc_block_bak, s->block_state, sizeof(s->block_state)); + } + +redo_frame: + + s->m.pict_type = pict->pict_type; + s->qbias= pict->pict_type == P_TYPE ? 2 : 0; + + encode_header(s); + s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start); + encode_blocks(s, 1); + s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits; + + for(plane_index=0; plane_index<3; plane_index++){ + Plane *p= &s->plane[plane_index]; + int w= p->width; + int h= p->height; + int x, y; +// int bits= put_bits_count(&s->c.pb); + + if(!(avctx->flags2 & CODEC_FLAG2_MEMC_ONLY)){ + //FIXME optimize + if(pict->data[plane_index]) //FIXME gray hack + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + s->spatial_dwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS; + } + } + predict_plane(s, s->spatial_dwt_buffer, plane_index, 0); + + if( plane_index==0 + && pict->pict_type == P_TYPE + && !(avctx->flags&CODEC_FLAG_PASS2) + && s->m.me.scene_change_score > s->avctx->scenechange_threshold){ + ff_init_range_encoder(c, buf, buf_size); + ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); + pict->pict_type= FF_I_TYPE; + s->keyframe=1; + s->current_picture.key_frame=1; + goto redo_frame; + } + + if(s->qlog == LOSSLESS_QLOG){ + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + s->spatial_dwt_buffer[y*w + x]= (s->spatial_dwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS; + } + } + } + + ff_spatial_dwt(s->spatial_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count); + + if(s->pass1_rc && plane_index==0){ + int delta_qlog = ratecontrol_1pass(s, pict); + if (delta_qlog <= INT_MIN) + return -1; + if(delta_qlog){ + //reordering qlog in the bitstream would eliminate this reset + ff_init_range_encoder(c, buf, buf_size); + memcpy(s->header_state, rc_header_bak, sizeof(s->header_state)); + memcpy(s->block_state, rc_block_bak, sizeof(s->block_state)); + encode_header(s); + encode_blocks(s, 0); + } + } + + for(level=0; level<s->spatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + + quantize(s, b, b->buf, b->stride, s->qbias); + if(orientation==0) + decorrelate(s, b, b->buf, b->stride, pict->pict_type == P_TYPE, 0); + encode_subband(s, b, b->buf, b->parent ? b->parent->buf : NULL, b->stride, orientation); + assert(b->parent==NULL || b->parent->stride == b->stride*2); + if(orientation==0) + correlate(s, b, b->buf, b->stride, 1, 0); + } + } +// av_log(NULL, AV_LOG_DEBUG, "plane:%d bits:%d\n", plane_index, put_bits_count(&s->c.pb) - bits); + + for(level=0; level<s->spatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + + dequantize(s, b, b->buf, b->stride); + } + } + + ff_spatial_idwt(s->spatial_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count); + if(s->qlog == LOSSLESS_QLOG){ + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + s->spatial_dwt_buffer[y*w + x]<<=FRAC_BITS; + } + } + } +{START_TIMER + predict_plane(s, s->spatial_dwt_buffer, plane_index, 1); +STOP_TIMER("pred-conv")} + }else{ + //ME/MC only + if(pict->pict_type == I_TYPE){ + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]= + pict->data[plane_index][y*pict->linesize[plane_index] + x]; + } + } + }else{ + memset(s->spatial_dwt_buffer, 0, sizeof(DWTELEM)*w*h); + predict_plane(s, s->spatial_dwt_buffer, plane_index, 1); + } + } + if(s->avctx->flags&CODEC_FLAG_PSNR){ + int64_t error= 0; + + if(pict->data[plane_index]) //FIXME gray hack + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int d= s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x] - pict->data[plane_index][y*pict->linesize[plane_index] + x]; + error += d*d; + } + } + s->avctx->error[plane_index] += error; + s->current_picture.error[plane_index] = error; + } + } + + if(s->last_picture[s->max_ref_frames-1].data[0]) + avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]); + + s->current_picture.coded_picture_number = avctx->frame_number; + s->current_picture.pict_type = pict->pict_type; + s->current_picture.quality = pict->quality; + s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start); + s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits; + s->m.current_picture.display_picture_number = + s->m.current_picture.coded_picture_number = avctx->frame_number; + s->m.current_picture.quality = pict->quality; + s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start); + if(s->pass1_rc) + if (ff_rate_estimate_qscale(&s->m, 0) < 0) + return -1; + if(avctx->flags&CODEC_FLAG_PASS1) + ff_write_pass1_stats(&s->m); + s->m.last_pict_type = s->m.pict_type; + avctx->frame_bits = s->m.frame_bits; + avctx->mv_bits = s->m.mv_bits; + avctx->misc_bits = s->m.misc_bits; + avctx->p_tex_bits = s->m.p_tex_bits; + + emms_c(); + + return ff_rac_terminate(c); +} + +static void common_end(SnowContext *s){ + int plane_index, level, orientation, i; + + av_freep(&s->spatial_dwt_buffer); + + av_freep(&s->m.me.scratchpad); + av_freep(&s->m.me.map); + av_freep(&s->m.me.score_map); + av_freep(&s->m.obmc_scratchpad); + + av_freep(&s->block); + + for(i=0; i<MAX_REF_FRAMES; i++){ + av_freep(&s->ref_mvs[i]); + av_freep(&s->ref_scores[i]); + if(s->last_picture[i].data[0]) + s->avctx->release_buffer(s->avctx, &s->last_picture[i]); + } + + for(plane_index=0; plane_index<3; plane_index++){ + for(level=s->spatial_decomposition_count-1; level>=0; level--){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &s->plane[plane_index].band[level][orientation]; + + av_freep(&b->x_coeff); + } + } + } +} + +static int encode_end(AVCodecContext *avctx) +{ + SnowContext *s = avctx->priv_data; + + common_end(s); + av_free(avctx->stats_out); + + return 0; +} + +static int decode_init(AVCodecContext *avctx) +{ + SnowContext *s = avctx->priv_data; + int block_size; + + avctx->pix_fmt= PIX_FMT_YUV420P; + + common_init(avctx); + + block_size = MB_SIZE >> s->block_max_depth; + slice_buffer_init(&s->sb, s->plane[0].height, (block_size) + (s->spatial_decomposition_count * (s->spatial_decomposition_count + 3)) + 1, s->plane[0].width, s->spatial_dwt_buffer); + + return 0; +} + +static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size){ + SnowContext *s = avctx->priv_data; + RangeCoder * const c= &s->c; + int bytes_read; + AVFrame *picture = data; + int level, orientation, plane_index; + + ff_init_range_decoder(c, buf, buf_size); + ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); + + s->current_picture.pict_type= FF_I_TYPE; //FIXME I vs. P + decode_header(s); + if(!s->block) alloc_blocks(s); + + frame_start(s); + //keyframe flag dupliaction mess FIXME + if(avctx->debug&FF_DEBUG_PICT_INFO) + av_log(avctx, AV_LOG_ERROR, "keyframe:%d qlog:%d\n", s->keyframe, s->qlog); + + decode_blocks(s); + + for(plane_index=0; plane_index<3; plane_index++){ + Plane *p= &s->plane[plane_index]; + int w= p->width; + int h= p->height; + int x, y; + int decode_state[MAX_DECOMPOSITIONS][4][1]; /* Stored state info for unpack_coeffs. 1 variable per instance. */ + +if(s->avctx->debug&2048){ + memset(s->spatial_dwt_buffer, 0, sizeof(DWTELEM)*w*h); + predict_plane(s, s->spatial_dwt_buffer, plane_index, 1); + + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + int v= s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]; + s->mconly_picture.data[plane_index][y*s->mconly_picture.linesize[plane_index] + x]= v; + } + } +} + +{ START_TIMER + for(level=0; level<s->spatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + unpack_coeffs(s, b, b->parent, orientation); + } + } + STOP_TIMER("unpack coeffs"); +} + +{START_TIMER + const int mb_h= s->b_height << s->block_max_depth; + const int block_size = MB_SIZE >> s->block_max_depth; + const int block_w = plane_index ? block_size/2 : block_size; + int mb_y; + dwt_compose_t cs[MAX_DECOMPOSITIONS]; + int yd=0, yq=0; + int y; + int end_y; + + ff_spatial_idwt_buffered_init(cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count); + for(mb_y=0; mb_y<=mb_h; mb_y++){ + + int slice_starty = block_w*mb_y; + int slice_h = block_w*(mb_y+1); + if (!(s->keyframe || s->avctx->debug&512)){ + slice_starty = FFMAX(0, slice_starty - (block_w >> 1)); + slice_h -= (block_w >> 1); + } + + { + START_TIMER + for(level=0; level<s->spatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + int start_y; + int end_y; + int our_mb_start = mb_y; + int our_mb_end = (mb_y + 1); + const int extra= 3; + start_y = (mb_y ? ((block_w * our_mb_start) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra: 0); + end_y = (((block_w * our_mb_end) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra); + if (!(s->keyframe || s->avctx->debug&512)){ + start_y = FFMAX(0, start_y - (block_w >> (1+s->spatial_decomposition_count - level))); + end_y = FFMAX(0, end_y - (block_w >> (1+s->spatial_decomposition_count - level))); + } + start_y = FFMIN(b->height, start_y); + end_y = FFMIN(b->height, end_y); + + if (start_y != end_y){ + if (orientation == 0){ + SubBand * correlate_band = &p->band[0][0]; + int correlate_end_y = FFMIN(b->height, end_y + 1); + int correlate_start_y = FFMIN(b->height, (start_y ? start_y + 1 : 0)); + decode_subband_slice_buffered(s, correlate_band, &s->sb, correlate_start_y, correlate_end_y, decode_state[0][0]); + correlate_slice_buffered(s, &s->sb, correlate_band, correlate_band->buf, correlate_band->stride, 1, 0, correlate_start_y, correlate_end_y); + dequantize_slice_buffered(s, &s->sb, correlate_band, correlate_band->buf, correlate_band->stride, start_y, end_y); + } + else + decode_subband_slice_buffered(s, b, &s->sb, start_y, end_y, decode_state[level][orientation]); + } + } + } + STOP_TIMER("decode_subband_slice"); + } + +{ START_TIMER + for(; yd<slice_h; yd+=4){ + ff_spatial_idwt_buffered_slice(&s->dsp, cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count, yd); + } + STOP_TIMER("idwt slice");} + + + if(s->qlog == LOSSLESS_QLOG){ + for(; yq<slice_h && yq<h; yq++){ + DWTELEM * line = slice_buffer_get_line(&s->sb, yq); + for(x=0; x<w; x++){ + line[x] <<= FRAC_BITS; + } + } + } + + predict_slice_buffered(s, &s->sb, s->spatial_dwt_buffer, plane_index, 1, mb_y); + + y = FFMIN(p->height, slice_starty); + end_y = FFMIN(p->height, slice_h); + while(y < end_y) + slice_buffer_release(&s->sb, y++); + } + + slice_buffer_flush(&s->sb); + +STOP_TIMER("idwt + predict_slices")} + } + + emms_c(); + + if(s->last_picture[s->max_ref_frames-1].data[0]) + avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]); + +if(!(s->avctx->debug&2048)) + *picture= s->current_picture; +else + *picture= s->mconly_picture; + + *data_size = sizeof(AVFrame); + + bytes_read= c->bytestream - c->bytestream_start; + if(bytes_read ==0) av_log(s->avctx, AV_LOG_ERROR, "error at end of frame\n"); //FIXME + + return bytes_read; +} + +static int decode_end(AVCodecContext *avctx) +{ + SnowContext *s = avctx->priv_data; + + slice_buffer_destroy(&s->sb); + + common_end(s); + + return 0; +} + +AVCodec snow_decoder = { + "snow", + CODEC_TYPE_VIDEO, + CODEC_ID_SNOW, + sizeof(SnowContext), + decode_init, + NULL, + decode_end, + decode_frame, + 0 /*CODEC_CAP_DR1*/ /*| CODEC_CAP_DRAW_HORIZ_BAND*/, + NULL +}; + +#ifdef CONFIG_ENCODERS +AVCodec snow_encoder = { + "snow", + CODEC_TYPE_VIDEO, + CODEC_ID_SNOW, + sizeof(SnowContext), + encode_init, + encode_frame, + encode_end, +}; +#endif + + +#if 0 +#undef malloc +#undef free +#undef printf + +int main(){ + int width=256; + int height=256; + int buffer[2][width*height]; + SnowContext s; + int i; + s.spatial_decomposition_count=6; + s.spatial_decomposition_type=1; + + printf("testing 5/3 DWT\n"); + for(i=0; i<width*height; i++) + buffer[0][i]= buffer[1][i]= random()%54321 - 12345; + + ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count); + ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count); + + for(i=0; i<width*height; i++) + if(buffer[0][i]!= buffer[1][i]) printf("fsck: %d %d %d\n",i, buffer[0][i], buffer[1][i]); + + printf("testing 9/7 DWT\n"); + s.spatial_decomposition_type=0; + for(i=0; i<width*height; i++) + buffer[0][i]= buffer[1][i]= random()%54321 - 12345; + + ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count); + ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count); + + for(i=0; i<width*height; i++) + if(FFABS(buffer[0][i] - buffer[1][i])>20) printf("fsck: %d %d %d\n",i, buffer[0][i], buffer[1][i]); + +#if 0 + printf("testing AC coder\n"); + memset(s.header_state, 0, sizeof(s.header_state)); + ff_init_range_encoder(&s.c, buffer[0], 256*256); + ff_init_cabac_states(&s.c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64); + + for(i=-256; i<256; i++){ +START_TIMER + put_symbol(&s.c, s.header_state, i*i*i/3*FFABS(i), 1); +STOP_TIMER("put_symbol") + } + ff_rac_terminate(&s.c); + + memset(s.header_state, 0, sizeof(s.header_state)); + ff_init_range_decoder(&s.c, buffer[0], 256*256); + ff_init_cabac_states(&s.c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64); + + for(i=-256; i<256; i++){ + int j; +START_TIMER + j= get_symbol(&s.c, s.header_state, 1); +STOP_TIMER("get_symbol") + if(j!=i*i*i/3*FFABS(i)) printf("fsck: %d != %d\n", i, j); + } +#endif +{ +int level, orientation, x, y; +int64_t errors[8][4]; +int64_t g=0; + + memset(errors, 0, sizeof(errors)); + s.spatial_decomposition_count=3; + s.spatial_decomposition_type=0; + for(level=0; level<s.spatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + int w= width >> (s.spatial_decomposition_count-level); + int h= height >> (s.spatial_decomposition_count-level); + int stride= width << (s.spatial_decomposition_count-level); + DWTELEM *buf= buffer[0]; + int64_t error=0; + + if(orientation&1) buf+=w; + if(orientation>1) buf+=stride>>1; + + memset(buffer[0], 0, sizeof(int)*width*height); + buf[w/2 + h/2*stride]= 256*256; + ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count); + for(y=0; y<height; y++){ + for(x=0; x<width; x++){ + int64_t d= buffer[0][x + y*width]; + error += d*d; + if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9 && level==2) printf("%8"PRId64" ", d); + } + if(FFABS(height/2-y)<9 && level==2) printf("\n"); + } + error= (int)(sqrt(error)+0.5); + errors[level][orientation]= error; + if(g) g=ff_gcd(g, error); + else g= error; + } + } + printf("static int const visual_weight[][4]={\n"); + for(level=0; level<s.spatial_decomposition_count; level++){ + printf(" {"); + for(orientation=0; orientation<4; orientation++){ + printf("%8"PRId64",", errors[level][orientation]/g); + } + printf("},\n"); + } + printf("};\n"); + { + int level=2; + int orientation=3; + int w= width >> (s.spatial_decomposition_count-level); + int h= height >> (s.spatial_decomposition_count-level); + int stride= width << (s.spatial_decomposition_count-level); + DWTELEM *buf= buffer[0]; + int64_t error=0; + + buf+=w; + buf+=stride>>1; + + memset(buffer[0], 0, sizeof(int)*width*height); +#if 1 + for(y=0; y<height; y++){ + for(x=0; x<width; x++){ + int tab[4]={0,2,3,1}; + buffer[0][x+width*y]= 256*256*tab[(x&1) + 2*(y&1)]; + } + } + ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count); +#else + for(y=0; y<h; y++){ + for(x=0; x<w; x++){ + buf[x + y*stride ]=169; + buf[x + y*stride-w]=64; + } + } + ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count); +#endif + for(y=0; y<height; y++){ + for(x=0; x<width; x++){ + int64_t d= buffer[0][x + y*width]; + error += d*d; + if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9) printf("%8"PRId64" ", d); + } + if(FFABS(height/2-y)<9) printf("\n"); + } + } + +} + return 0; +} +#endif + |