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avcodec.h: Clarify AVCodecContext::pix_fmt documentation since its value may be set by the demuxer

rawdec.c: Only perform bits_per_coded_sample -> pix_fmt guesswork if pix_fmt hasn't been set

Originally committed as revision 23561 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Tomas Härdin 2010-06-10 08:39:05 +00:00
parent bb5cfc48f1
commit c1bdc9300b
2 changed files with 4 additions and 2 deletions

View File

@ -1121,8 +1121,10 @@ typedef struct AVCodecContext {
/**
* Pixel format, see PIX_FMT_xxx.
* May be set by the demuxer if known from headers.
* May be overriden by the decoder if it knows better.
* - encoding: Set by user.
* - decoding: Set by libavcodec.
* - decoding: Set by user if known, overridden by libavcodec if known
*/
enum PixelFormat pix_fmt;

View File

@ -77,7 +77,7 @@ static av_cold int raw_init_decoder(AVCodecContext *avctx)
avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_mov, avctx->bits_per_coded_sample);
else if (avctx->codec_tag)
avctx->pix_fmt = find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag);
else if (avctx->bits_per_coded_sample)
else if (avctx->pix_fmt == PIX_FMT_NONE && avctx->bits_per_coded_sample)
avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi, avctx->bits_per_coded_sample);
context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);