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avviddec: Remember initially used stride and don't allow stride changes

Browse source 
libav does not allow stride changes currently, fall back to
non-direct rendering here:
https://bugzilla.gnome.org/show_bug.cgi?id=704769
https://bugzilla.libav.org/show_bug.cgi?id=556
This commit is contained in:
Sebastian Dröge 2013-09-12 12:11:29 +02:00
parent 94875a34d4
commit faec0142e3
2 changed files with 29 additions and 0 deletions
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28
ext/libav/gstavviddec.c
View file

@ -281,6 +281,7 @@ static gboolean
gst_ffmpegviddec_close (GstFFMpegVidDec * ffmpegdec, gboolean reset)
{
GstFFMpegVidDecClass *oclass;
gint i;
oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
@ -291,6 +292,9 @@ gst_ffmpegviddec_close (GstFFMpegVidDec * ffmpegdec, gboolean reset)
gst_ffmpeg_avcodec_close (ffmpegdec->context);
ffmpegdec->opened = FALSE;
for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
ffmpegdec->stride[i] = -1;
gst_buffer_replace (&ffmpegdec->palette, NULL);
if (ffmpegdec->context->extradata) {
@ -314,12 +318,16 @@ static gboolean
gst_ffmpegviddec_open (GstFFMpegVidDec * ffmpegdec)
{
GstFFMpegVidDecClass *oclass;
gint i;
oclass = (GstFFMpegVidDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
if (gst_ffmpeg_avcodec_open (ffmpegdec->context, oclass->in_plugin) < 0)
goto could_not_open;
for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
ffmpegdec->stride[i] = -1;
ffmpegdec->opened = TRUE;
ffmpegdec->is_realvideo = FALSE;
@ -600,6 +608,26 @@ gst_ffmpegviddec_get_buffer (AVCodecContext * context, AVFrame * picture)
if (c < GST_VIDEO_INFO_N_PLANES (info)) {
picture->data[c] = GST_VIDEO_FRAME_PLANE_DATA (&dframe->vframe, c);
picture->linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&dframe->vframe, c);
/* libav does not allow stride changes currently, fall back to
* non-direct rendering here:
* https://bugzilla.gnome.org/show_bug.cgi?id=704769
* https://bugzilla.libav.org/show_bug.cgi?id=556
*/
if (ffmpegdec->stride[c] == -1) {
ffmpegdec->stride[c] = picture->linesize[c];
} else if (picture->linesize[c] != ffmpegdec->stride[c]) {
for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
picture->data[c] = NULL;
picture->linesize[c] = 0;
}
gst_video_frame_unmap (&dframe->vframe);
dframe->mapped = FALSE;
gst_buffer_replace (&frame->output_buffer, NULL);
ffmpegdec->current_dr = FALSE;
goto no_dr;
}
} else {
picture->data[c] = NULL;
picture->linesize[c] = 0;

1
ext/libav/gstavviddec.h
View file

@ -37,6 +37,7 @@ struct _GstFFMpegVidDec
/* decoding */
AVCodecContext *context;
AVFrame *picture;
gint stride[4];
gboolean opened;
/* current context */