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-rw-r--r--src/libffmpeg/libavcodec/snow.c3996
1 files changed, 3996 insertions, 0 deletions
diff --git a/src/libffmpeg/libavcodec/snow.c b/src/libffmpeg/libavcodec/snow.c
new file mode 100644
index 000000000..9cfddfa95
--- /dev/null
+++ b/src/libffmpeg/libavcodec/snow.c
@@ -0,0 +1,3996 @@
+/*
+ * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "avcodec.h"
+#include "common.h"
+#include "dsputil.h"
+
+#include "rangecoder.h"
+#define MID_STATE 128
+
+#include "mpegvideo.h"
+
+#undef NDEBUG
+#include <assert.h>
+
+#define MAX_DECOMPOSITIONS 8
+#define MAX_PLANES 4
+#define DWTELEM int
+#define QSHIFT 5
+#define QROOT (1<<QSHIFT)
+#define LOSSLESS_QLOG -128
+#define FRAC_BITS 8
+
+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,
+};
+
+#define LOG2_OBMC_MAX 6
+#define OBMC_MAX (1<<(LOG2_OBMC_MAX))
+#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, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
+ 0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 0,
+ 0, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 8, 9,10,10, 9, 8, 8, 7, 7, 6, 5, 5, 4, 3, 3, 2, 2, 1, 0,
+ 0, 1, 2, 3, 4, 5, 6, 7, 7, 8, 9,10,11,12,13,14,14,13,12,11,10, 9, 8, 7, 7, 6, 5, 4, 3, 2, 1, 0,
+ 1, 2, 3, 4, 5, 6, 7, 8,10,11,12,13,14,15,16,17,17,16,15,14,13,12,11,10, 8, 7, 6, 5, 4, 3, 2, 1,
+ 1, 2, 3, 5, 6, 8, 9,10,12,13,14,16,17,19,20,21,21,20,19,17,16,14,13,12,10, 9, 8, 6, 5, 3, 2, 1,
+ 1, 2, 4, 6, 7, 9,11,12,14,15,17,19,20,22,24,25,25,24,22,20,19,17,15,14,12,11, 9, 7, 6, 4, 2, 1,
+ 1, 3, 5, 7, 8,10,12,14,16,18,20,22,23,25,27,29,29,27,25,23,22,20,18,16,14,12,10, 8, 7, 5, 3, 1,
+ 1, 3, 5, 7,10,12,14,16,18,20,22,24,27,29,31,33,33,31,29,27,24,22,20,18,16,14,12,10, 7, 5, 3, 1,
+ 1, 4, 6, 8,11,13,15,18,20,23,25,27,30,32,34,37,37,34,32,30,27,25,23,20,18,15,13,11, 8, 6, 4, 1,
+ 1, 4, 7, 9,12,14,17,20,22,25,28,30,33,35,38,41,41,38,35,33,30,28,25,22,20,17,14,12, 9, 7, 4, 1,
+ 1, 4, 7,10,13,16,19,22,24,27,30,33,36,39,42,45,45,42,39,36,33,30,27,24,22,19,16,13,10, 7, 4, 1,
+ 2, 5, 8,11,14,17,20,23,27,30,33,36,39,42,45,48,48,45,42,39,36,33,30,27,23,20,17,14,11, 8, 5, 2,
+ 2, 5, 8,12,15,19,22,25,29,32,35,39,42,46,49,52,52,49,46,42,39,35,32,29,25,22,19,15,12, 8, 5, 2,
+ 2, 5, 9,13,16,20,24,27,31,34,38,42,45,49,53,56,56,53,49,45,42,38,34,31,27,24,20,16,13, 9, 5, 2,
+ 2, 6,10,14,17,21,25,29,33,37,41,45,48,52,56,60,60,56,52,48,45,41,37,33,29,25,21,17,14,10, 6, 2,
+ 2, 6,10,14,17,21,25,29,33,37,41,45,48,52,56,60,60,56,52,48,45,41,37,33,29,25,21,17,14,10, 6, 2,
+ 2, 5, 9,13,16,20,24,27,31,34,38,42,45,49,53,56,56,53,49,45,42,38,34,31,27,24,20,16,13, 9, 5, 2,
+ 2, 5, 8,12,15,19,22,25,29,32,35,39,42,46,49,52,52,49,46,42,39,35,32,29,25,22,19,15,12, 8, 5, 2,
+ 2, 5, 8,11,14,17,20,23,27,30,33,36,39,42,45,48,48,45,42,39,36,33,30,27,23,20,17,14,11, 8, 5, 2,
+ 1, 4, 7,10,13,16,19,22,24,27,30,33,36,39,42,45,45,42,39,36,33,30,27,24,22,19,16,13,10, 7, 4, 1,
+ 1, 4, 7, 9,12,14,17,20,22,25,28,30,33,35,38,41,41,38,35,33,30,28,25,22,20,17,14,12, 9, 7, 4, 1,
+ 1, 4, 6, 8,11,13,15,18,20,23,25,27,30,32,34,37,37,34,32,30,27,25,23,20,18,15,13,11, 8, 6, 4, 1,
+ 1, 3, 5, 7,10,12,14,16,18,20,22,24,27,29,31,33,33,31,29,27,24,22,20,18,16,14,12,10, 7, 5, 3, 1,
+ 1, 3, 5, 7, 8,10,12,14,16,18,20,22,23,25,27,29,29,27,25,23,22,20,18,16,14,12,10, 8, 7, 5, 3, 1,
+ 1, 2, 4, 6, 7, 9,11,12,14,15,17,19,20,22,24,25,25,24,22,20,19,17,15,14,12,11, 9, 7, 6, 4, 2, 1,
+ 1, 2, 3, 5, 6, 8, 9,10,12,13,14,16,17,19,20,21,21,20,19,17,16,14,13,12,10, 9, 8, 6, 5, 3, 2, 1,
+ 1, 2, 3, 4, 5, 6, 7, 8,10,11,12,13,14,15,16,17,17,16,15,14,13,12,11,10, 8, 7, 6, 5, 4, 3, 2, 1,
+ 0, 1, 2, 3, 4, 5, 6, 7, 7, 8, 9,10,11,12,13,14,14,13,12,11,10, 9, 8, 7, 7, 6, 5, 4, 3, 2, 1, 0,
+ 0, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 8, 9,10,10, 9, 8, 8, 7, 7, 6, 5, 5, 4, 3, 3, 2, 2, 1, 0,
+ 0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 0,
+ 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
+ //error:0.000020
+};
+static const uint8_t obmc16[256]={
+ 0, 1, 1, 2, 2, 3, 3, 4, 4, 3, 3, 2, 2, 1, 1, 0,
+ 1, 2, 4, 5, 7, 8,10,11,11,10, 8, 7, 5, 4, 2, 1,
+ 1, 4, 6, 9,11,14,16,19,19,16,14,11, 9, 6, 4, 1,
+ 2, 5, 9,12,16,19,23,26,26,23,19,16,12, 9, 5, 2,
+ 2, 7,11,16,20,25,29,34,34,29,25,20,16,11, 7, 2,
+ 3, 8,14,19,25,30,36,41,41,36,30,25,19,14, 8, 3,
+ 3,10,16,23,29,36,42,49,49,42,36,29,23,16,10, 3,
+ 4,11,19,26,34,41,49,56,56,49,41,34,26,19,11, 4,
+ 4,11,19,26,34,41,49,56,56,49,41,34,26,19,11, 4,
+ 3,10,16,23,29,36,42,49,49,42,36,29,23,16,10, 3,
+ 3, 8,14,19,25,30,36,41,41,36,30,25,19,14, 8, 3,
+ 2, 7,11,16,20,25,29,34,34,29,25,20,16,11, 7, 2,
+ 2, 5, 9,12,16,19,23,26,26,23,19,16,12, 9, 5, 2,
+ 1, 4, 6, 9,11,14,16,19,19,16,14,11, 9, 6, 4, 1,
+ 1, 2, 4, 5, 7, 8,10,11,11,10, 8, 7, 5, 4, 2, 1,
+ 0, 1, 1, 2, 2, 3, 3, 4, 4, 3, 3, 2, 2, 1, 1, 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]={
+ 1, 3, 5, 7, 7, 5, 3, 1,
+ 3, 9,15,21,21,15, 9, 3,
+ 5,15,25,35,35,25,15, 5,
+ 7,21,35,49,49,35,21, 7,
+ 7,21,35,49,49,35,21, 7,
+ 5,15,25,35,35,25,15, 5,
+ 3, 9,15,21,21,15, 9, 3,
+ 1, 3, 5, 7, 7, 5, 3, 1,
+//error:0.000000
+};
+
+//linear *64
+static const uint8_t obmc4[16]={
+ 4,12,12, 4,
+12,36,36,12,
+12,36,36,12,
+ 4,12,12, 4,
+//error:0.000000
+};
+
+static const uint8_t *obmc_tab[4]={
+ obmc32, obmc16, obmc8, obmc4
+};
+
+typedef struct BlockNode{
+ int16_t mx;
+ int16_t my;
+ uint8_t color[3];
+ uint8_t type;
+//#define TYPE_SPLIT 1
+#define BLOCK_INTRA 1
+//#define TYPE_NOCOLOR 4
+ uint8_t level; //FIXME merge into type?
+}BlockNode;
+
+#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;
+
+/** Used to minimize the amount of memory used in order to optimize cache performance. **/
+typedef struct {
+ DWTELEM * * line; ///< For use by idwt and predict_slices.
+ DWTELEM * * data_stack; ///< Used for internal purposes.
+ int data_stack_top;
+ int line_count;
+ int line_width;
+ int data_count;
+ DWTELEM * base_buffer; ///< Buffer that this structure is caching.
+} slice_buffer;
+
+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 independant of MpegEncContext, so this will be removed then (FIXME/XXX)
+
+ AVCodecContext *avctx;
+ RangeCoder c;
+ DSPContext dsp;
+ AVFrame input_picture;
+ AVFrame current_picture;
+ AVFrame last_picture;
+ 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 temporal_decomposition_type;
+ int spatial_decomposition_count;
+ int temporal_decomposition_count;
+ DWTELEM *spatial_dwt_buffer;
+ int colorspace_type;
+ int chroma_h_shift;
+ int chroma_v_shift;
+ int spatial_scalability;
+ int qlog;
+ int lambda;
+ int lambda2;
+ int mv_scale;
+ int qbias;
+#define QBIAS_SHIFT 3
+ int b_width;
+ int b_height;
+ int block_max_depth;
+ Plane plane[MAX_PLANES];
+ BlockNode *block;
+ 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 independant 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 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 i;
+ 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 i;
+ 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_free(buf->data_stack[i]);
+ }
+ assert(buf->data_stack);
+ av_free(buf->data_stack);
+ assert(buf->line);
+ av_free(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){
+ if (v<0) return -v;
+ else if(v>m) return 2*m-v;
+ else return v;
+}
+
+static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
+ int i;
+
+ if(v){
+ const int a= ABS(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 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);
+ }
+}
+
+static 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);
+ }
+}
+
+static 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);
+ }
+}
+
+
+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 A1,A2,A3,A4, 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 A1,A2,A3,A4, 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 A1,A2,A3,A4, 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
+ 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(b1 <= b3) horizontal_decompose53i(b2, width);
+ if(y+2 < height) horizontal_decompose53i(b3, width);
+STOP_TIMER("horizontal_decompose53i")}
+
+{START_TIMER
+ if(b1 <= b3) vertical_decompose53iH0(b1, b2, b3, width);
+ if(b0 <= b2) vertical_decompose53iL0(b0, b1, b2, width);
+STOP_TIMER("vertical_decompose53i*")}
+
+ b0=b2;
+ b1=b3;
+ }
+}
+
+#define liftS lift
+#define lift5 lift
+#if 1
+#define W_AM 3
+#define W_AO 0
+#define W_AS 1
+
+#undef liftS
+#define W_BM 1
+#define W_BO 8
+#define W_BS 4
+
+#define W_CM 1
+#define W_CO 0
+#define W_CS 0
+
+#define W_DM 3
+#define W_DO 4
+#define W_DS 3
+#elif 0
+#define W_AM 55
+#define W_AO 16
+#define W_AS 5
+
+#define W_BM 3
+#define W_BO 32
+#define W_BS 6
+
+#define W_CM 127
+#define W_CO 64
+#define W_CS 7
+
+#define W_DM 7
+#define W_DO 8
+#define W_DS 4
+#elif 0
+#define W_AM 97
+#define W_AO 32
+#define W_AS 6
+
+#define W_BM 63
+#define W_BO 512
+#define W_BS 10
+
+#define W_CM 13
+#define W_CO 8
+#define W_CS 4
+
+#define W_DM 15
+#define W_DO 16
+#define W_DS 5
+
+#else
+
+#define W_AM 203
+#define W_AO 64
+#define W_AS 7
+
+#define W_BM 217
+#define W_BO 2048
+#define W_BS 12
+
+#define W_CM 113
+#define W_CO 64
+#define W_CS 7
+
+#define W_DM 227
+#define W_DO 128
+#define W_DS 9
+#endif
+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(b3 <= b5) horizontal_decompose97i(b4, width);
+ if(y+4 < height) horizontal_decompose97i(b5, width);
+if(width>400){
+STOP_TIMER("horizontal_decompose97i")
+}}
+
+{START_TIMER
+ if(b3 <= b5) vertical_decompose97iH0(b3, b4, b5, width);
+ if(b2 <= b4) vertical_decompose97iL0(b2, b3, b4, width);
+ if(b1 <= b3) vertical_decompose97iH1(b1, b2, b3, width);
+ if(b0 <= b2) 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 0: spatial_decompose97i(buffer, width>>level, height>>level, stride<<level); break;
+ case 1: spatial_decompose53i(buffer, width>>level, height>>level, stride<<level); break;
+ case 2: 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 A1,A2,A3,A4, x;
+
+#if 0
+ 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;
+ int mirror0 = mirror(y-1, height-1);
+ int mirror1 = mirror(y , height-1);
+ int mirror2 = mirror(y+1, height-1);
+ int mirror3 = mirror(y+2, height-1);
+
+ DWTELEM *b0= cs->b0;
+ DWTELEM *b1= cs->b1;
+ DWTELEM *b2= slice_buffer_get_line(sb, mirror2 * stride_line);
+ DWTELEM *b3= slice_buffer_get_line(sb, mirror3 * stride_line);
+
+{START_TIMER
+ if(mirror1 <= mirror3) vertical_compose53iL0(b1, b2, b3, width);
+ if(mirror0 <= mirror2) vertical_compose53iH0(b0, b1, b2, width);
+STOP_TIMER("vertical_compose53i*")}
+
+{START_TIMER
+ if(y-1 >= 0) horizontal_compose53i(b0, width);
+ if(mirror0 <= mirror2) 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(b1 <= b3) vertical_compose53iL0(b1, b2, b3, width);
+ if(b0 <= b2) vertical_compose53iH0(b0, b1, b2, width);
+STOP_TIMER("vertical_compose53i*")}
+
+{START_TIMER
+ if(y-1 >= 0) horizontal_compose53i(b0, width);
+ if(b0 <= b2) 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);
+}
+
+
+static void 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;
+ }
+}
+
+static void vertical_compose97i(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWTELEM *b3, DWTELEM *b4, DWTELEM *b5, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ int r;
+ 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(dwt_compose_t *cs, slice_buffer * sb, int width, int height, int stride_line){
+ int y = cs->y;
+
+ int mirror0 = mirror(y - 1, height - 1);
+ int mirror1 = mirror(y + 0, height - 1);
+ int mirror2 = mirror(y + 1, height - 1);
+ int mirror3 = mirror(y + 2, height - 1);
+ int mirror4 = mirror(y + 3, height - 1);
+ int mirror5 = mirror(y + 4, height - 1);
+ DWTELEM *b0= cs->b0;
+ DWTELEM *b1= cs->b1;
+ DWTELEM *b2= cs->b2;
+ DWTELEM *b3= cs->b3;
+ DWTELEM *b4= slice_buffer_get_line(sb, mirror4 * stride_line);
+ DWTELEM *b5= slice_buffer_get_line(sb, mirror5 * stride_line);
+
+{START_TIMER
+ if(y>0 && y+4<height){
+ vertical_compose97i(b0, b1, b2, b3, b4, b5, width);
+ }else{
+ if(mirror3 <= mirror5) vertical_compose97iL1(b3, b4, b5, width);
+ if(mirror2 <= mirror4) vertical_compose97iH1(b2, b3, b4, width);
+ if(mirror1 <= mirror3) vertical_compose97iL0(b1, b2, b3, width);
+ if(mirror0 <= mirror2) vertical_compose97iH0(b0, b1, b2, width);
+ }
+if(width>400){
+STOP_TIMER("vertical_compose97i")}}
+
+{START_TIMER
+ if(y-1>= 0) horizontal_compose97i(b0, width);
+ if(mirror0 <= mirror2) horizontal_compose97i(b1, width);
+if(width>400 && mirror0 <= mirror2){
+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;
+
+ if(stride == width && y+4 < height && 0){
+ int x;
+ for(x=0; x<width/2; x++)
+ b5[x] += 64*2;
+ for(; x<width; x++)
+ b5[x] += 169*2;
+ }
+
+{START_TIMER
+ if(b3 <= b5) vertical_compose97iL1(b3, b4, b5, width);
+ if(b2 <= b4) vertical_compose97iH1(b2, b3, b4, width);
+ if(b1 <= b3) vertical_compose97iL0(b1, b2, b3, width);
+ if(b0 <= b2) vertical_compose97iH0(b0, b1, b2, width);
+if(width>400){
+STOP_TIMER("vertical_compose97i")}}
+
+{START_TIMER
+ if(y-1>= 0) horizontal_compose97i(b0, width);
+ if(b0 <= b2) 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);
+}
+
+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 0: spatial_compose97i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break;
+ case 1: spatial_compose53i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break;
+ /* not slicified yet */
+ case 2: /*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;
+ }
+ }
+}
+
+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 0: spatial_compose97i_init(cs+level, buffer, height>>level, stride<<level); break;
+ case 1: spatial_compose53i_init(cs+level, buffer, height>>level, stride<<level); break;
+ /* not slicified yet */
+ case 2: spatial_composeX(buffer, width>>level, height>>level, stride<<level); break;
+ }
+ }
+}
+
+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 0: spatial_compose97i_dy(cs+level, buffer, width>>level, height>>level, stride<<level);
+ break;
+ case 1: spatial_compose53i_dy(cs+level, buffer, width>>level, height>>level, stride<<level);
+ break;
+ case 2: break;
+ }
+ }
+ }
+}
+
+void ff_spatial_idwt_buffered_slice(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 0: spatial_compose97i_dy_buffered(cs+level, slice_buf, width>>level, height>>level, stride_line<<level);
+ break;
+ case 1: spatial_compose53i_dy_buffered(cs+level, slice_buf, width>>level, height>>level, stride_line<<level);
+ break;
+ case 2: break;
+ }
+ }
+ }
+}
+
+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(/*ABS(ll) + */3*ABS(l) + ABS(lt) + 2*ABS(t) + ABS(rt) + ABS(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(/*ABS(ll) + */3*ABS(l) + ABS(lt) + 2*ABS(t) + ABS(rt) + ABS(p));
+ int l2= 2*ABS(l) + (l<0);
+ int t2= 2*ABS(t) + (t<0);
+
+ put_symbol2(&s->c, b->state[context + 2], ABS(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(/*ABS(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 x,y;
+ const int qlog= 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){
+ 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 = 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 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.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);
+}
+
+//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);
+ static BlockNode null_block= { //FIXME add border maybe
+ .color= {128,128,128},
+ .mx= 0,
+ .my= 0,
+ .type= 0,
+ .level= 0,
+ };
+ int trx= (x+1)<<rem_depth;
+ int try= (y+1)<<rem_depth;
+ BlockNode *left = x ? &s->block[index-1] : &null_block;
+ BlockNode *top = y ? &s->block[index-w] : &null_block;
+ BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
+ BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
+ BlockNode *tl = y && x ? &s->block[index-w-1] : left;
+ 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= mid_pred(left->mx, top->mx, tr->mx);
+ int pmy= mid_pred(left->my, top->my, tr->my);
+ int mx=0, my=0;
+ int l,cr,cb, i;
+ const int stride= s->current_picture.linesize[0];
+ const int uvstride= s->current_picture.linesize[1];
+ const int instride= s->input_picture.linesize[0];
+ const int uvinstride= s->input_picture.linesize[1];
+ uint8_t *new_l = s->input_picture.data[0] + (x + y* instride)*block_w;
+ uint8_t *new_cb= s->input_picture.data[1] + (x + y*uvinstride)*block_w/2;
+ uint8_t *new_cr= s->input_picture.data[2] + (x + y*uvinstride)*block_w/2;
+ uint8_t current_mb[3][stride*block_w];
+ uint8_t *current_data[3]= {&current_mb[0][0], &current_mb[1][0], &current_mb[2][0]};
+ 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 mx_context= av_log2(2*ABS(left->mx - top->mx));
+ int my_context= av_log2(2*ABS(left->my - top->my));
+ int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
+
+ assert(sizeof(s->block_state) >= 256);
+ if(s->keyframe){
+ set_blocks(s, level, x, y, pl, pcb, pcr, pmx, pmy, BLOCK_INTRA);
+ return 0;
+ }
+
+ //FIXME optimize
+ for(i=0; i<block_w; i++)
+ memcpy(&current_mb[0][0] + stride*i, new_l + instride*i, block_w);
+ for(i=0; i<block_w>>1; i++)
+ memcpy(&current_mb[1][0] + uvstride*i, new_cb + uvinstride*i, block_w>>1);
+ for(i=0; i<block_w>>1; i++)
+ memcpy(&current_mb[2][0] + uvstride*i, new_cr + uvinstride*i, block_w>>1);
+
+// 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;
+ s->m.me.skip= 0;
+
+ init_ref(c, current_data, s->last_picture.data, NULL, block_w*x, block_w*y, 0);
+
+ assert(s->m.me. stride == stride);
+ assert(s->m.me.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= ff_epzs_motion_search(&s->m, &mx, &my, P, 0, /*ref_index*/ 0, last_mv,
+ (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
+
+ assert(mx >= c->xmin);
+ assert(mx <= c->xmax);
+ assert(my >= c->ymin);
+ assert(my <= c->ymax);
+
+ score= s->m.me.sub_motion_search(&s->m, &mx, &my, score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
+ score= ff_get_mb_score(&s->m, mx, my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
+ //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);
+ put_symbol(&pc, &p_state[128 + 32*mx_context], mx - pmx, 1);
+ put_symbol(&pc, &p_state[128 + 32*my_context], 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_mb[0][0], stride, block_w);
+ l= (sum + block_s/2)/block_s;
+ iscore = pix_norm1(&current_mb[0][0], stride, block_w) - 2*l*sum + l*l*block_s;
+
+ block_s= block_w*block_w>>2;
+ sum = pix_sum(&current_mb[1][0], uvstride, block_w>>1);
+ cb= (sum + block_s/2)/block_s;
+// iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
+ sum = pix_sum(&current_mb[2][0], uvstride, block_w>>1);
+ cr= (sum + block_s/2)/block_s;
+// iscore += pix_norm1(&current_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){
+ 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, 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, 0);
+ memcpy(s->block_state, p_state, sizeof(s->block_state));
+ return score;
+ }
+}
+
+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;
+ static BlockNode null_block= { //FIXME add border maybe
+ .color= {128,128,128},
+ .mx= 0,
+ .my= 0,
+ .type= 0,
+ .level= 0,
+ };
+ int trx= (x+1)<<rem_depth;
+ BlockNode *left = x ? &s->block[index-1] : &null_block;
+ BlockNode *top = y ? &s->block[index-w] : &null_block;
+ BlockNode *tl = y && x ? &s->block[index-w-1] : left;
+ 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, BLOCK_INTRA);
+ return;
+ }
+
+ if(level==s->block_max_depth || get_rac(&s->c, &s->block_state[4 + s_context])){
+ int type;
+ int l = left->color[0];
+ int cb= left->color[1];
+ int cr= left->color[2];
+ int mx= mid_pred(left->mx, top->mx, tr->mx);
+ int my= mid_pred(left->my, top->my, tr->my);
+ int mx_context= av_log2(2*ABS(left->mx - top->mx)) + 0*av_log2(2*ABS(tr->mx - top->mx));
+ int my_context= av_log2(2*ABS(left->my - top->my)) + 0*av_log2(2*ABS(tr->my - top->my));
+
+ type= get_rac(&s->c, &s->block_state[1 + left->type + top->type]) ? BLOCK_INTRA : 0;
+
+ if(type){
+ 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{
+ mx+= get_symbol(&s->c, &s->block_state[128 + 32*mx_context], 1);
+ my+= get_symbol(&s->c, &s->block_state[128 + 32*my_context], 1);
+ }
+ set_blocks(s, level, x, y, l, cb, cr, mx, my, 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 x, y;
+ int w= s->b_width;
+ int h= s->b_height;
+
+ 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++){
+ 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 *src, 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){
+ int x, y;
+ const int color= block->color[plane_index];
+ for(y=0; y < b_h; y++){
+ for(x=0; x < b_w; x++){
+ dst[x + y*stride]= color;
+ }
+ }
+ }else{
+ 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;
+ 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;
+ }
+ if((dx&3) || (dy&3) || b_w!=b_h || (b_w!=4 && b_w!=8 && b_w!=16))
+ mc_block(dst, src, tmp, stride, b_w, b_h, dx, dy);
+ else
+ s->dsp.put_h264_qpel_pixels_tab[2-(b_w>>3)][dy+(dx>>2)](dst,src + 2 + 2*stride,stride);
+ }
+}
+
+static always_inline int same_block(BlockNode *a, BlockNode *b){
+ return !((a->mx - b->mx) | (a->my - b->my) | a->type | b->type);
+}
+
+//FIXME name clenup (b_w, block_w, b_width stuff)
+static always_inline void add_yblock_buffered(SnowContext *s, slice_buffer * sb, DWTELEM *old_dst, uint8_t *dst8, uint8_t *src, 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 plane_index){
+ DWTELEM * dst = NULL;
+ 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];
+ uint8_t tmp[src_stride*(b_h+5)]; //FIXME align
+ 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;
+ 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;
+ 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 > 7*MB_SIZE);
+// old_dst += src_x + src_y*dst_stride;
+ dst8+= src_x + src_y*src_stride;
+// src += src_x + src_y*src_stride;
+
+ block[0]= tmp+3*MB_SIZE;
+ pred_block(s, block[0], src, 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]= tmp + 4*MB_SIZE;
+ pred_block(s, block[1], src, 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]= tmp+5*MB_SIZE;
+ pred_block(s, block[2], src, 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]= tmp+6*MB_SIZE;
+ pred_block(s, block[3], src, 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
+{
+
+ START_TIMER
+
+ int block_index = 0;
+ for(y=0; y<b_h; y++){
+ //FIXME ugly missue of obmc_stride
+ uint8_t *obmc1= obmc + y*obmc_stride;
+ uint8_t *obmc2= obmc1+ (obmc_stride>>1);
+ uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
+ 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 += old_dst[x + y*dst_stride];
+ 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{
+// old_dst[x + y*dst_stride] -= v;
+ dst[x + src_x] -= v;
+ }
+ }
+ }
+ STOP_TIMER("Inner add y block")
+}
+#endif
+}
+
+//FIXME name clenup (b_w, block_w, b_width stuff)
+static always_inline void add_yblock(SnowContext *s, DWTELEM *dst, uint8_t *dst8, uint8_t *src, 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 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];
+ uint8_t tmp[src_stride*(b_h+5)]; //FIXME align
+ 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;
+ 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;
+ 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 > 7*MB_SIZE);
+ dst += src_x + src_y*dst_stride;
+ dst8+= src_x + src_y*src_stride;
+// src += src_x + src_y*src_stride;
+
+ block[0]= tmp+3*MB_SIZE;
+ pred_block(s, block[0], src, 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]= tmp + 4*MB_SIZE;
+ pred_block(s, block[1], src, 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]= tmp+5*MB_SIZE;
+ pred_block(s, block[2], src, 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]= tmp+6*MB_SIZE;
+ pred_block(s, block[3], src, 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
+ for(y=0; y<b_h; y++){
+ //FIXME ugly missue of obmc_stride
+ uint8_t *obmc1= obmc + y*obmc_stride;
+ uint8_t *obmc2= obmc1+ (obmc_stride>>1);
+ uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
+ 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 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 *ref = s->last_picture.data[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_buffered(s, sb, old_buffer, dst8, ref, 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, plane_index);
+
+ STOP_TIMER("add_yblock")
+ }
+
+ STOP_TIMER("predict_slice")
+}
+
+static 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];
+ int obmc_stride= plane_index ? block_size : 2*block_size;
+ int ref_stride= s->current_picture.linesize[plane_index];
+ uint8_t *ref = s->last_picture.data[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, buf, dst8, ref, 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, plane_index);
+
+ STOP_TIMER("add_yblock")
+ }
+
+ STOP_TIMER("predict_slice")
+}
+
+static 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 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= 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_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, DWTELEM *src, int stride){
+ const int w= b->width;
+ const int h= b->height;
+ const int qlog= 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++){
+// 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= 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_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, DWTELEM *src, int stride, int inverse, int use_median){
+ const int w= b->width;
+ const int h= b->height;
+ int x,y;
+
+// START_TIMER
+
+ DWTELEM * line;
+ DWTELEM * prev;
+
+ for(y=0; y<h; 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);
+ 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);
+
+ 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, 0);
+ put_symbol(&s->c, s->header_state, s->qlog, 1);
+ put_symbol(&s->c, s->header_state, s->mv_scale, 0);
+ put_symbol(&s->c, s->header_state, s->qbias, 1);
+ put_symbol(&s->c, s->header_state, s->block_max_depth, 0);
+}
+
+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);
+ 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);
+
+ 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, 0);
+ 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, 0);
+ s->qbias= get_symbol(&s->c, s->header_state, 1);
+ s->block_max_depth= get_symbol(&s->c, s->header_state, 0);
+
+ return 0;
+}
+
+static void init_qexp(){
+ 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;
+
+ 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;
+ }
+ }
+
+ 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 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 >= 0){
+ av_log(avctx, AV_LOG_ERROR, "this codec is under development, files encoded with it wont be decodeable with future versions!!!\n"
+ "use vstrict=-1 / -strict -1 to use it anyway\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));
+ h263_encode_init(&s->m); //mv_penalty
+
+ if(avctx->flags&CODEC_FLAG_PASS1){
+ if(!avctx->stats_out)
+ avctx->stats_out = av_mallocz(256);
+ }
+ if(avctx->flags&CODEC_FLAG_PASS2){
+ if(ff_rate_control_init(&s->m) < 0)
+ return -1;
+ }
+
+ 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_RGBA32:
+ 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;
+ 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->last_picture= s->current_picture;
+ s->current_picture= tmp;
+
+ 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;
+ }
+
+ 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;
+
+ ff_init_range_encoder(c, buf, buf_size);
+ ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
+
+ s->input_picture = *pict;
+
+ 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;
+ s->m.picture_number= avctx->frame_number;
+ pict->quality= ff_rate_estimate_qscale(&s->m);
+ }else{
+ s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
+ pict->pict_type= s->keyframe ? FF_I_TYPE : FF_P_TYPE;
+ }
+
+ if(pict->quality){
+ s->qlog= rint(QROOT*log(pict->quality / (float)FF_QP2LAMBDA)/log(2));
+ //<64 >60
+ s->qlog += 61*QROOT/8;
+ }else{
+ s->qlog= LOSSLESS_QLOG;
+ }
+
+ frame_start(s);
+ s->current_picture.key_frame= s->keyframe;
+
+ 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.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.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->lambda = s->m.lambda= pict->quality * 3/2; //FIXME bug somewhere else
+ 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);
+ }
+
+redo_frame:
+
+ 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);
+ 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);
+
+ //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
+ && 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;
+ reset_contexts(s);
+ 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);
+
+ 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")}
+ 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.data[0])
+ avctx->release_buffer(avctx, &s->last_picture);
+
+ s->current_picture.coded_picture_number = avctx->frame_number;
+ s->current_picture.pict_type = pict->pict_type;
+ s->current_picture.quality = pict->quality;
+ if(avctx->flags&CODEC_FLAG_PASS1){
+ s->m.p_tex_bits = 8*(s->c.bytestream - s->c.bytestream_start) - 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.pict_type = pict->pict_type;
+ s->m.current_picture.quality = pict->quality;
+ ff_write_pass1_stats(&s->m);
+ }
+ if(avctx->flags&CODEC_FLAG_PASS2){
+ s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
+ }
+
+ emms_c();
+
+ return ff_rac_terminate(c);
+}
+
+static void common_end(SnowContext *s){
+ int plane_index, level, orientation;
+
+ 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->block);
+
+ 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;
+
+ common_init(avctx);
+
+ block_size = MB_SIZE >> s->block_max_depth;
+ /* FIXME block_size * 2 is determined empirically. block_size * 1.5 is definitely needed, but I (Robert) cannot figure out why more than that is needed. Perhaps there is a bug, or perhaps I overlooked some demands that are placed on the buffer. */
+ /* FIXME The formula is WRONG. For height > 480, the buffer will overflow. */
+ /* FIXME For now, I will use a full frame of lines. Fortunately, this should not materially effect cache performance because lines are allocated using a stack, so if in fact only 50 out of 496 lines are needed at a time, the other 446 will sit allocated but never accessed. */
+// slice_buffer_init(s->plane[0].sb, s->plane[0].height, (block_size * 2) + (s->spatial_decomposition_count * s->spatial_decomposition_count), s->plane[0].width, s->spatial_dwt_buffer);
+ slice_buffer_init(&s->sb, s->plane[0].height, s->plane[0].height, 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. */
+ SubBand * correlate_band;
+
+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");
+}
+
+ /* Handle level 0, orientation 0 specially. It is particularly resistant to slicing but fortunately quite small, so process it in one pass. */
+ correlate_band = &p->band[0][0];
+ decode_subband_slice_buffered(s, correlate_band, &s->sb, 0, correlate_band->height, decode_state[0][0]);
+ correlate_buffered(s, &s->sb, correlate_band, correlate_band->buf, correlate_band->stride, 1, 0);
+ dequantize_buffered(s, &s->sb, correlate_band, correlate_band->buf, correlate_band->stride);
+
+{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++){
+
+ const int slice_starty = block_w*mb_y;
+ const int slice_h = block_w*(mb_y+1);
+
+ {
+ START_TIMER
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 1; 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);
+ start_y = FFMIN(b->height, (mb_y ? ((block_w * our_mb_start - 4) >> (s->spatial_decomposition_count - level)) + 5 : 0));
+ end_y = FFMIN(b->height, (((block_w * our_mb_end - 4) >> (s->spatial_decomposition_count - level)) + 5));
+
+ if (start_y != end_y)
+ 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(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);
+
+ /* Nasty hack based empirically on how predict_slice_buffered() hits the buffer. */
+ /* FIXME If possible, make predict_slice fit into the slice. As of now, it works on some previous lines (up to slice_height / 2) if the condition on the next line is false. */
+ if (s->keyframe || (s->avctx->debug&512)){
+ y = FFMIN(p->height, slice_starty);
+ end_y = FFMIN(p->height, slice_h);
+ }
+ else{
+ y = FFMAX(0, FFMIN(p->height, slice_starty - (block_w >> 1)));
+ end_y = FFMAX(0, FFMIN(p->height, slice_h - (block_w >> 1)));
+ }
+ 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.data[0])
+ avctx->release_buffer(avctx, &s->last_picture);
+
+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(buffer[0][i]!= buffer[1][i]) printf("fsck: %d %d %d\n",i, buffer[0][i], buffer[1][i]);
+
+ 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*ABS(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*ABS(i)) printf("fsck: %d != %d\n", i, j);
+ }
+{
+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(ABS(width/2-x)<9 && ABS(height/2-y)<9 && level==2) printf("%8lld ", d);
+ }
+ if(ABS(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("%8lld,", 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(ABS(width/2-x)<9 && ABS(height/2-y)<9) printf("%8lld ", d);
+ }
+ if(ABS(height/2-y)<9) printf("\n");
+ }
+ }
+
+}
+ return 0;
+}
+#endif
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-26 21:26:23 +0000