diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/ps2/mpegvideo_mmi.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/ps2/mpegvideo_mmi.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/ps2/mpegvideo_mmi.c b/contrib/ffmpeg/libavcodec/ps2/mpegvideo_mmi.c new file mode 100644 index 000000000..1e5f08aae --- /dev/null +++ b/contrib/ffmpeg/libavcodec/ps2/mpegvideo_mmi.c @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2000,2001 Fabrice Bellard. + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * MMI optimization by Leon van Stuivenberg + */ + +#include "../dsputil.h" +#include "../mpegvideo.h" +#include "../avcodec.h" + +static void dct_unquantize_h263_mmi(MpegEncContext *s, + DCTELEM *block, int n, int qscale) +{ + int level=0, qmul, qadd; + int nCoeffs; + + assert(s->block_last_index[n]>=0); + + qadd = (qscale - 1) | 1; + qmul = qscale << 1; + + if (s->mb_intra) { + if (!s->h263_aic) { + if (n < 4) + level = block[0] * s->y_dc_scale; + else + level = block[0] * s->c_dc_scale; + }else { + qadd = 0; + level = block[0]; + } + nCoeffs= 63; //does not allways use zigzag table + } else { + nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]; + } + + asm volatile( + "add $14, $0, %3 \n\t" + "pcpyld $8, %0, %0 \n\t" + "pcpyh $8, $8 \n\t" //r8 = qmul + "pcpyld $9, %1, %1 \n\t" + "pcpyh $9, $9 \n\t" //r9 = qadd + ".p2align 2 \n\t" + "1: \n\t" + "lq $10, 0($14) \n\t" //r10 = level + "addi $14, $14, 16 \n\t" //block+=8 + "addi %2, %2, -8 \n\t" + "pcgth $11, $0, $10 \n\t" //r11 = level < 0 ? -1 : 0 + "pcgth $12, $10, $0 \n\t" //r12 = level > 0 ? -1 : 0 + "por $12, $11, $12 \n\t" + "pmulth $10, $10, $8 \n\t" + "paddh $13, $9, $11 \n\t" + "pxor $13, $13, $11 \n\t" //r13 = level < 0 ? -qadd : qadd + "pmfhl.uw $11 \n\t" + "pinteh $10, $11, $10 \n\t" //r10 = level * qmul + "paddh $10, $10, $13 \n\t" + "pand $10, $10, $12 \n\t" + "sq $10, -16($14) \n\t" + "bgez %2, 1b \n\t" + :: "r"(qmul), "r" (qadd), "r" (nCoeffs), "r" (block) : "$8", "$9", "$10", "$11", "$12", "$13", "$14", "memory" ); + + if(s->mb_intra) + block[0]= level; +} + + +void MPV_common_init_mmi(MpegEncContext *s) +{ + s->dct_unquantize_h263_intra = + s->dct_unquantize_h263_inter = dct_unquantize_h263_mmi; +} + + |