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* DR1 support

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Originally committed as revision 1157 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Zdenek Kabelac 2002-11-04 18:03:10 +00:00
parent 8664c807e6
commit b0397e0e00
1 changed files with 32 additions and 10 deletions
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42
libavcodec/dv.c
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@ -551,18 +551,39 @@ static int dvvideo_decode_frame(AVCodecContext *avctx,
else
mb_pos_ptr = dv_place_420;
if (avctx->flags & CODEC_FLAG_DR1 && avctx->get_buffer_callback)
{
s->width = -1;
avctx->dr_buffer[0] = avctx->dr_buffer[1] = avctx->dr_buffer[2] = 0;
if(avctx->get_buffer_callback(avctx, width, height, I_TYPE) < 0){
fprintf(stderr, "get_buffer() failed\n");
return -1;
}
}
/* (re)alloc picture if needed */
if (s->width != width || s->height != height) {
for(i=0;i<3;i++)
av_freep(&s->current_picture[i]);
if (!(avctx->flags & CODEC_FLAG_DR1))
for(i=0;i<3;i++) {
if (avctx->dr_buffer[i] != s->current_picture[i])
av_freep(&s->current_picture[i]);
avctx->dr_buffer[i] = 0;
}
for(i=0;i<3;i++) {
size = width * height;
s->linesize[i] = width;
if (i >= 1) {
size >>= 2;
s->linesize[i] >>= s->sampling_411 ? 2 : 1;
}
s->current_picture[i] = av_malloc(size);
if (avctx->dr_buffer[i]) {
s->current_picture[i] = avctx->dr_buffer[i];
s->linesize[i] = (i == 0) ? avctx->dr_stride : avctx->dr_uvstride;
} else {
size = width * height;
s->linesize[i] = width;
if (i >= 1) {
size >>= 2;
s->linesize[i] >>= s->sampling_411 ? 2 : 1;
}
s->current_picture[i] = av_malloc(size);
}
if (!s->current_picture[i])
return -1;
}
@ -614,6 +635,7 @@ static int dvvideo_decode_end(AVCodecContext *avctx)
int i;
for(i=0;i<3;i++)
if (avctx->dr_buffer[i] != s->current_picture[i])
av_freep(&s->current_picture[i]);
return 0;
}
@ -627,7 +649,7 @@ AVCodec dvvideo_decoder = {
NULL,
dvvideo_decode_end,
dvvideo_decode_frame,
0,
CODEC_CAP_DR1,
NULL
};