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avviddec: release buffers when not direct rendering

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New libav will not call the release_buffer callback anymore when
avcodec_default_get_buffer() is called from get_buffer. Releasing of the
memory in a picture should now be done by registering a callback to the
avbuffer objects in the picture. There is some compatibility code to
wrap the memory we provide in get_buffer in avbuffer with a callback to
release_buffer but that is not done when avcodec_default_get_buffer()
is called.

Work around this by adding a dummy avbuffer object to the picture that
will release the frame.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=721077
This commit is contained in:
Wim Taymans 2014-01-10 17:18:53 +01:00
parent 1e65aac1a4
commit 81cef109e2
1 changed files with 29 additions and 5 deletions
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34
ext/libav/gstavviddec.c
View file

@ -524,6 +524,7 @@ open_failed:
typedef struct
{
GstFFMpegVidDec *ffmpegdec;
GstVideoCodecFrame *frame;
gboolean mapped;
GstVideoFrame vframe;
@ -531,13 +532,17 @@ typedef struct
} GstFFMpegVidDecVideoFrame;
static GstFFMpegVidDecVideoFrame *
gst_ffmpegviddec_video_frame_new (GstVideoCodecFrame * frame)
gst_ffmpegviddec_video_frame_new (GstFFMpegVidDec * ffmpegdec,
GstVideoCodecFrame * frame)
{
GstFFMpegVidDecVideoFrame *dframe;
dframe = g_slice_new0 (GstFFMpegVidDecVideoFrame);
dframe->ffmpegdec = ffmpegdec;
dframe->frame = frame;
GST_DEBUG_OBJECT (ffmpegdec, "new video frame %p", dframe);
return dframe;
}
@ -545,6 +550,8 @@ static void
gst_ffmpegviddec_video_frame_free (GstFFMpegVidDec * ffmpegdec,
GstFFMpegVidDecVideoFrame * frame)
{
GST_DEBUG_OBJECT (ffmpegdec, "free video frame %p", frame);
if (frame->mapped)
gst_video_frame_unmap (&frame->vframe);
gst_video_decoder_release_frame (GST_VIDEO_DECODER (ffmpegdec), frame->frame);
@ -552,6 +559,14 @@ gst_ffmpegviddec_video_frame_free (GstFFMpegVidDec * ffmpegdec,
g_slice_free (GstFFMpegVidDecVideoFrame, frame);
}
static void
dummy_free_buffer (void *opaque, uint8_t * data)
{
GstFFMpegVidDecVideoFrame *frame = opaque;
gst_ffmpegviddec_video_frame_free (frame->ffmpegdec, frame);
}
/* called when ffmpeg wants us to allocate a buffer to write the decoded frame
* into. We try to give it memory from our pool */
static int
@ -590,7 +605,8 @@ gst_ffmpegviddec_get_buffer (AVCodecContext * context, AVFrame * picture)
goto duplicate_frame;
/* GstFFMpegVidDecVideoFrame receives the frame ref */
picture->opaque = dframe = gst_ffmpegviddec_video_frame_new (frame);
picture->opaque = dframe =
gst_ffmpegviddec_video_frame_new (ffmpegdec, frame);
GST_DEBUG_OBJECT (ffmpegdec, "storing opaque %p", dframe);
@ -694,11 +710,19 @@ invalid_frame:
fallback:
{
int c;
gboolean first = TRUE;
int ret = avcodec_default_get_buffer (context, picture);
for (c = 0; c < AV_NUM_DATA_POINTERS; c++)
for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
ffmpegdec->stride[c] = picture->linesize[c];
if (picture->buf[c] == NULL && first) {
picture->buf[c] =
av_buffer_create (NULL, 0, dummy_free_buffer, dframe, 0);
first = FALSE;
}
}
return ret;
}
duplicate_frame:
@ -1669,8 +1693,8 @@ gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
avcodec_align_dimensions2 (ffmpegdec->context, &width, &height,
linesize_align);
edge =
ffmpegdec->context->
flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width ();
ffmpegdec->
context->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width ();
/* increase the size for the padding */
width += edge << 1;
height += edge << 1;