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lavc/utils: use AVPixFmtDescriptor to probe palette formats

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Also use the input frame format instead of the AVCodecContext one according
to the documentation of AVCodecContext.get_buffer2().
This commit is contained in:
Matthieu Bouron 2015-12-14 17:49:48 +01:00
parent 0c59d40ae0
commit ae1c750cb4
1 changed files with 11 additions and 2 deletions
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13
libavcodec/utils.c
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@ -646,6 +646,7 @@ fail:
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
{
FramePool *pool = s->internal->pool;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
int i;
if (pic->data[0]) {
@ -653,6 +654,13 @@ static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
return -1;
}
if (!desc) {
av_log(s, AV_LOG_ERROR,
"Unable to get pixel format descriptor for format %s\n",
av_get_pix_fmt_name(pic->format));
return AVERROR(EINVAL);
}
memset(pic->data, 0, sizeof(pic->data));
pic->extended_data = pic->data;
@ -669,8 +677,9 @@ static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
pic->data[i] = NULL;
pic->linesize[i] = 0;
}
if (pic->data[1] && !pic->data[2])
avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
if (s->debug & FF_DEBUG_BUFFERS)
av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);