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Add variables to prepare to the AMV decoder patch.

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Patch by Vladimir Voroshilov (voroshil - gmail - com)

Originally committed as revision 10614 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vladimir Voroshilov 2007-09-29 12:52:56 +00:00 committed by Vitor Sessak
parent 19b9c7cc66
commit a449faeacb
1 changed files with 14 additions and 5 deletions
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19
libavcodec/mjpegdec.c
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@ -660,8 +660,17 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, int point
static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int ss, int se, int Ah, int Al){
int i, mb_x, mb_y;
int EOBRUN = 0;
uint8_t* data[MAX_COMPONENTS];
int linesize[MAX_COMPONENTS];
if(Ah) return 0; /* TODO decode refinement planes too */
for(i=0; i < nb_components; i++) {
int c = s->comp_index[i];
data[c] = s->picture.data[c];
linesize[c]=s->linesize[c];
}
for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
if (s->restart_interval && !s->restart_count)
@ -691,16 +700,16 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int ss, i
return -1;
}
// av_log(s->avctx, AV_LOG_DEBUG, "mb: %d %d processed\n", mb_y, mb_x);
ptr = s->picture.data[c] +
(((s->linesize[c] * (v * mb_y + y) * 8) +
ptr = data[c] +
(((linesize[c] * (v * mb_y + y) * 8) +
(h * mb_x + x) * 8) >> s->avctx->lowres);
if (s->interlaced && s->bottom_field)
ptr += s->linesize[c] >> 1;
ptr += linesize[c] >> 1;
//av_log(NULL, AV_LOG_DEBUG, "%d %d %d %d %d %d %d %d \n", mb_x, mb_y, x, y, c, s->bottom_field, (v * mb_y + y) * 8, (h * mb_x + x) * 8);
if(!s->progressive)
s->dsp.idct_put(ptr, s->linesize[c], s->block);
s->dsp.idct_put(ptr, linesize[c], s->block);
else
s->dsp.idct_add(ptr, s->linesize[c], s->block);
s->dsp.idct_add(ptr, linesize[c], s->block);
if (++x == h) {
x = 0;
y++;