From: Stefano Sabatini <[email protected]>
The format is a per-frame property, having it in AVFrame simplify the
operation of extraction of that information, since avoids the need to
access the codec/stream context.
---
libavcodec/avcodec.h | 9 +++++++++
libavcodec/utils.c | 5 +++++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 9cee89d..fdcd844 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1272,6 +1272,15 @@ typedef struct AVFrame {
* - decoding: Read by user.
*/
int width, height;
+
+ /**
+ * format of the frame, -1 if unknown or unset
+ * It should be cast to the corresponding enum (enum PixelFormat
+ * for video, enum AVSampleFormat for audio)
+ * - encoding: unused
+ * - decoding: Read by user.
+ */
+ int format;
} AVFrame;
struct AVCodecInternal;
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 27e1a6b..5fa9ca6 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -585,6 +585,7 @@ void avcodec_get_frame_defaults(AVFrame *pic){
pic->pts= AV_NOPTS_VALUE;
pic->key_frame= 1;
pic->sample_aspect_ratio = (AVRational){0, 1};
+ pic->format = -1; /* unknown */
}
AVFrame *avcodec_alloc_frame(void){
@@ -865,6 +866,8 @@ int attribute_align_arg
avcodec_decode_video2(AVCodecContext *avctx, AVFrame *pi
picture->width = avctx->width;
if (!picture->height)
picture->height = avctx->height;
+ if (picture->format == PIX_FMT_NONE)
+ picture->format = avctx->pix_fmt;
}
emms_c(); //needed to avoid an emms_c() call before every return;
@@ -986,6 +989,8 @@ int attribute_align_arg
avcodec_decode_audio4(AVCodecContext *avctx,
if (ret >= 0 && *got_frame_ptr) {
avctx->frame_number++;
frame->pkt_dts = avpkt->dts;
+ if (frame->format == AV_SAMPLE_FMT_NONE)
+ frame->format = avctx->sample_fmt;
}
}
return ret;
--
1.7.7.3
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