mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2025-02-19 20:46:22 +00:00
Code Issues 1 Projects Releases Wiki Activity

playsink: Add a queue before subtitleoverlay

Browse source 
This will improve playback, and the same thing is done
for subpicture streams too.
This commit is contained in:
Sebastian Dröge 2009-11-02 15:50:17 +01:00
parent c0828e55b6
commit dcc109bd9a
1 changed files with 30 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

52
gst/playback/gstplaysink.c
View file

@ -93,7 +93,8 @@ typedef struct
{
GstPlayChain chain;
GstPad *sinkpad;
GstElement *conv;
GstElement *queue;
GstElement *identity;
GstElement *overlay;
GstPad *videosinkpad;
GstPad *textsinkpad;
@ -1138,15 +1139,15 @@ setup_video_chain (GstPlaySink * playsink, gboolean raw, gboolean async,
/* make an element for playback of video with subtitles embedded.
*
* +-------------------------------+
* | tbin |
* | +-----------------+ |
* | | subtitleoverlay | |
* video----video_sink | |
* | | src--src
* text-----text_sink | |
* | +-----------------+ |
* +-------------------------------+
* +--------------------------------------------+
* | tbin |
* | +--------+ +-----------------+ |
* | | queue | | subtitleoverlay | |
* video--src sink---video_sink | |
* | +--------+ | src--src
* text------------------text_sink | |
* | +-----------------+ |
* +--------------------------------------------+
*
*/
static GstPlayTextChain *
@ -1208,6 +1209,13 @@ gen_text_chain (GstPlaySink * playsink)
if (textsinkpad == NULL) {
if (!(playsink->flags & GST_PLAY_FLAG_NATIVE_VIDEO)) {
/* make a little queue */
chain->queue = gst_element_factory_make ("queue", "vqueue");
g_object_set (G_OBJECT (chain->queue), "max-size-buffers", 3,
"max-size-bytes", 0, "max-size-time", (gint64) 0, NULL);
gst_bin_add (bin, chain->queue);
videosinkpad = gst_element_get_static_pad (chain->queue, "sink");
chain->overlay =
gst_element_factory_make ("subtitleoverlay", "suboverlay");
if (chain->overlay == NULL) {
@ -1223,11 +1231,12 @@ gen_text_chain (GstPlaySink * playsink)
playsink->font_desc, NULL);
}
gst_element_link_pads (chain->queue, "src", chain->overlay,
"video_sink");
textsinkpad =
gst_element_get_static_pad (chain->overlay, "subtitle_sink");
srcpad = gst_element_get_static_pad (chain->overlay, "src");
videosinkpad =
gst_element_get_static_pad (chain->overlay, "video_sink");
}
}
}
@ -1236,12 +1245,12 @@ gen_text_chain (GstPlaySink * playsink)
/* if we still don't have a videosink, we don't have an overlay. the only
* thing we can do is insert an identity and ghost the src
* and sink pads. */
chain->conv = gst_element_factory_make ("identity", "tidentity");
g_object_set (chain->conv, "signal-handoffs", FALSE, NULL);
g_object_set (chain->conv, "silent", TRUE, NULL);
gst_bin_add (bin, chain->conv);
srcpad = gst_element_get_static_pad (chain->conv, "src");
videosinkpad = gst_element_get_static_pad (chain->conv, "sink");
chain->identity = gst_element_factory_make ("identity", "tidentity");
g_object_set (chain->identity, "signal-handoffs", FALSE, NULL);
g_object_set (chain->identity, "silent", TRUE, NULL);
gst_bin_add (bin, chain->identity);
srcpad = gst_element_get_static_pad (chain->identity, "src");
videosinkpad = gst_element_get_static_pad (chain->identity, "sink");
}
/* expose the ghostpads */
@ -1921,10 +1930,9 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
/* we try to set the sink async=FALSE when we need vis, this way we can
* avoid a queue in the audio chain. */
async = !need_vis;
/* put a little queue in front of the video but only if we are not doing
* subpictures because then we will add the queue in front of the subpicture
* mixer to minimize latency. */
queue = (need_subp == FALSE);
/* If subtitles are requested there already is a queue in the video chain */
queue = (need_text == FALSE);
GST_DEBUG_OBJECT (playsink, "adding video, raw %d",
playsink->video_pad_raw);