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playsink: Use subtitleoverlay for subtitles

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This commit is contained in:
Sebastian Dröge 2009-11-02 15:05:41 +01:00
parent c92559a9cb
commit c0828e55b6
1 changed files with 42 additions and 59 deletions
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101
gst/playback/gstplaysink.c
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@ -97,6 +97,7 @@ typedef struct
GstElement *overlay;
GstPad *videosinkpad;
GstPad *textsinkpad;
GstPad *textsinkpad_target;
GstPad *srcpad; /* outgoing srcpad, used to connect to the next
* chain */
GstElement *sink; /* custom sink to receive subtitle buffers */
@ -1137,14 +1138,16 @@ setup_video_chain (GstPlaySink * playsink, gboolean raw, gboolean async,
/* make an element for playback of video with subtitles embedded.
*
* +----------------------------------------------+
* | tbin +-------------+ |
* | +-----+ | textoverlay | |
* | | csp | +--video_sink | |
* sink-------sink src+ +-text_sink src--+ |
* | +-----+ | +-------------+ +-- src
* text_sink-------------+ |
* +----------------------------------------------+
* +-------------------------------+
* | tbin |
* | +-----------------+ |
* | | subtitleoverlay | |
* video----video_sink | |
* | | src--src
* text-----text_sink | |
* | +-----------------+ |
* +-------------------------------+
*
*/
static GstPlayTextChain *
gen_text_chain (GstPlaySink * playsink)
@ -1205,49 +1208,24 @@ gen_text_chain (GstPlaySink * playsink)
if (textsinkpad == NULL) {
if (!(playsink->flags & GST_PLAY_FLAG_NATIVE_VIDEO)) {
/* no custom sink, try to setup the colorspace and textoverlay elements */
chain->conv = gst_element_factory_make ("ffmpegcolorspace", "tconv");
if (chain->conv == NULL) {
/* not really needed, it might work without colorspace */
post_missing_element_message (playsink, "ffmpegcolorspace");
chain->overlay =
gst_element_factory_make ("subtitleoverlay", "suboverlay");
if (chain->overlay == NULL) {
post_missing_element_message (playsink, "subtitleoverlay");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"ffmpegcolorspace"), ("subtitle rendering might fail"));
"subtitleoverlay"), ("subtitle rendering disabled"));
} else {
gst_bin_add (bin, chain->conv);
videosinkpad = gst_element_get_static_pad (chain->conv, "sink");
}
}
gst_bin_add (bin, chain->overlay);
chain->overlay = gst_element_factory_make ("textoverlay", "overlay");
if (chain->overlay == NULL) {
post_missing_element_message (playsink, "textoverlay");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"textoverlay"), ("subtitle rendering disabled"));
} else {
gst_bin_add (bin, chain->overlay);
if (playsink->font_desc) {
g_object_set (G_OBJECT (chain->overlay), "font-desc",
playsink->font_desc, NULL);
}
/* Set some parameters */
g_object_set (G_OBJECT (chain->overlay),
"halign", "center", "valign", "bottom", NULL);
if (playsink->font_desc) {
g_object_set (G_OBJECT (chain->overlay), "font-desc",
playsink->font_desc, NULL);
}
g_object_set (G_OBJECT (chain->overlay), "wait-text", FALSE, NULL);
textsinkpad = gst_element_get_static_pad (chain->overlay, "text_sink");
srcpad = gst_element_get_static_pad (chain->overlay, "src");
if (videosinkpad) {
/* if we had a videosinkpad, we had a converter and we can link it, we
* know that this will work */
gst_element_link_pads (chain->conv, "src", chain->overlay,
"video_sink");
} else {
/* no videopad, expose our own video pad then */
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");
}
@ -1255,8 +1233,8 @@ gen_text_chain (GstPlaySink * playsink)
}
if (videosinkpad == NULL) {
/* if we still don't have a videosink, we don't have a converter nor an
* overlay. the only thing we can do is insert an identity and ghost the src
/* 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);
@ -1264,13 +1242,6 @@ gen_text_chain (GstPlaySink * playsink)
gst_bin_add (bin, chain->conv);
srcpad = gst_element_get_static_pad (chain->conv, "src");
videosinkpad = gst_element_get_static_pad (chain->conv, "sink");
} else {
/* we have a videosink but maybe not a srcpad because there was no
* overlay */
if (srcpad == NULL) {
/* ghost the source pad of the converter then */
srcpad = gst_element_get_static_pad (chain->conv, "src");
}
}
/* expose the ghostpads */
@ -1281,6 +1252,7 @@ gen_text_chain (GstPlaySink * playsink)
}
if (textsinkpad) {
chain->textsinkpad = gst_ghost_pad_new ("text_sink", textsinkpad);
chain->textsinkpad_target = textsinkpad;
gst_object_unref (textsinkpad);
gst_element_add_pad (chain->chain.bin, chain->textsinkpad);
}
@ -2016,16 +1988,27 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
playsink->textchain = gen_text_chain (playsink);
}
if (playsink->textchain) {
GstPad *target;
GST_DEBUG_OBJECT (playsink, "adding text chain");
add_chain (GST_PLAY_CHAIN (playsink->textchain), TRUE);
if (!(target =
gst_ghost_pad_get_target (GST_GHOST_PAD_CAST
(playsink->textchain->textsinkpad)))) {
target = gst_object_ref (playsink->textchain->textsinkpad_target);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->
textchain->textsinkpad), target);
}
gst_object_unref (target);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->text_pad),
playsink->textchain->textsinkpad);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad),
playsink->textchain->videosinkpad);
gst_pad_link (playsink->textchain->srcpad, playsink->videochain->sinkpad);
activate_chain (GST_PLAY_CHAIN (playsink->textchain), TRUE);
if (playsink->textchain->overlay)
g_object_set (playsink->textchain->overlay, "silent", FALSE, NULL);
}
} else {
GST_DEBUG_OBJECT (playsink, "no text needed");
@ -2039,8 +2022,8 @@ gst_play_sink_reconfigure (GstPlaySink * playsink)
} else {
/* we have a chain and a textpad, turn the subtitles off */
GST_DEBUG_OBJECT (playsink, "turning off the text");
if (playsink->textchain->overlay)
g_object_set (playsink->textchain->overlay, "silent", TRUE, NULL);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->
textchain->textsinkpad), NULL);
}
}
if (!need_video && playsink->video_pad)