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ffenc: Make keyframe forcing thread-safe

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Make the keyframe forcing thread-safe, also emit a downstream event
to allow muxers or payloaders to react appropriately.

https://bugzilla.gnome.org/show_bug.cgi?id=602556
This commit is contained in:
Olivier Crête 2009-11-20 21:46:33 -05:00
parent 08160ac0ef
commit b69fcc471e
2 changed files with 29 additions and 2 deletions
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29
ext/ffmpeg/gstffmpegenc.c
View file

@ -686,11 +686,20 @@ gst_ffmpegenc_chain_video (GstPad * pad, GstBuffer * inbuf)
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) (GST_PAD_PARENT (pad));
GstBuffer *outbuf;
gint ret_size = 0, frame_size;
gboolean force_keyframe;
GST_DEBUG_OBJECT (ffmpegenc,
"Received buffer of time %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (inbuf)));
GST_OBJECT_LOCK (ffmpegenc);
force_keyframe = ffmpegenc->force_keyframe;
ffmpegenc->force_keyframe = FALSE;
GST_OBJECT_UNLOCK (ffmpegenc);
if (force_keyframe)
ffmpegenc->picture->pict_type = FF_I_TYPE;
frame_size = gst_ffmpeg_avpicture_fill ((AVPicture *) ffmpegenc->picture,
GST_BUFFER_DATA (inbuf),
ffmpegenc->context->pix_fmt,
@ -751,6 +760,14 @@ gst_ffmpegenc_chain_video (GstPad * pad, GstBuffer * inbuf)
if (ffmpegenc->picture->pict_type)
ffmpegenc->picture->pict_type = 0;
if (force_keyframe) {
gst_pad_push_event (ffmpegenc->srcpad,
gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM,
gst_structure_new ("GstForceKeyUnit",
"timestamp", G_TYPE_UINT64, GST_BUFFER_TIMESTAMP (outbuf),
NULL)));
}
return gst_pad_push (ffmpegenc->srcpad, outbuf);
}
@ -1028,13 +1045,18 @@ static gboolean
gst_ffmpegenc_event_src (GstPad * pad, GstEvent * event)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) (GST_PAD_PARENT (pad));
gboolean forward = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_UPSTREAM:{
const GstStructure *s;
s = gst_event_get_structure (event);
if (gst_structure_has_name (s, "GstForceKeyUnit")) {
ffmpegenc->picture->pict_type = FF_I_TYPE;
GST_OBJECT_LOCK (ffmpegenc);
ffmpegenc->force_keyframe = TRUE;
GST_OBJECT_UNLOCK (ffmpegenc);
forward = FALSE;
gst_event_unref (event);
}
break;
}
@ -1043,7 +1065,10 @@ gst_ffmpegenc_event_src (GstPad * pad, GstEvent * event)
break;
}
return gst_pad_push_event (ffmpegenc->sinkpad, event);
if (forward)
return gst_pad_push_event (ffmpegenc->sinkpad, event);
else
return TRUE;
}
static void

2
ext/ffmpeg/gstffmpegenc.h
View file

@ -74,6 +74,8 @@ struct _GstFFMpegEnc
/* other settings are copied over straight,
* include a context here, rather than copy-and-past it from avcodec.h */
AVCodecContext config;
gboolean force_keyframe;
};
typedef struct _GstFFMpegEncClass GstFFMpegEncClass;