virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

vp6: Support cropping to AVCodecContext.width/height

Browse Source 
In these cases, there is no extradata but only the properly set
width/height values by the demuxer.

This makes sure VP6 in F4V files is cropped properly.

This is similar to what is done for H264 for letting the container
width/height override what's in the bitstream, since 30f515091.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-08-14 12:39:29 +03:00
parent ceec6e792e
commit 41a10f3ba1
1 changed files with 14 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
libavcodec/vp6.c
View File

@ -84,11 +84,21 @@ static int vp6_parse_header(VP56Context *s, const uint8_t *buf, int buf_size,
if (!s->macroblocks || /* first frame */
16*cols != s->avctx->coded_width ||
16*rows != s->avctx->coded_height) {
avcodec_set_dimensions(s->avctx, 16*cols, 16*rows);
if (s->avctx->extradata_size == 0 &&
FFALIGN(s->avctx->width, 16) == 16 * cols &&
FFALIGN(s->avctx->height, 16) == 16 * rows) {
// We assume this is properly signalled container cropping,
// in an F4V file. Just set the coded_width/height, don't
// touch the cropped ones.
s->avctx->coded_width = 16 * cols;
s->avctx->coded_height = 16 * rows;
} else {
avcodec_set_dimensions(s->avctx, 16 * cols, 16 * rows);
if (s->avctx->extradata_size == 1) {
s->avctx->width -= s->avctx->extradata[0] >> 4;
s->avctx->height -= s->avctx->extradata[0] & 0x0F;
}
}
res = VP56_SIZE_CHANGE;
}