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gst/playback/: Implement subtitles.

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Original commit message from CVS:
2006-01-30  Julien MOUTTE  <julien@moutte.net>

* gst/playback/gstplaybasebin.c: (group_commit),
(queue_overrun),
(setup_subtitle), (setup_source), (set_active_source):
* gst/playback/gstplaybin.c: (gst_play_bin_dispose),
(gen_text_element), (gen_audio_element), (gen_vis_element),
(remove_sinks), (add_sink), (setup_sinks): Implement subtitles.
This commit is contained in:
Julien Moutte 2006-01-30 08:11:14 +00:00
parent dc46970cdf
commit 950ab0ef96
3 changed files with 156 additions and 68 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2006-01-30 Julien MOUTTE <julien@moutte.net>
* gst/playback/gstplaybasebin.c: (group_commit), (queue_overrun),
(setup_subtitle), (setup_source), (set_active_source):
* gst/playback/gstplaybin.c: (gst_play_bin_dispose),
(gen_text_element), (gen_audio_element), (gen_vis_element),
(remove_sinks), (add_sink), (setup_sinks): Implement subtitles.
2006-01-29 Sebastien Moutte <sebastien@moutte.net>
* gst-libs/gst/audio/audio.h: (GST_CLOCK_TIME_TO_FRAMES)

67
gst/playback/gstplaybasebin.c
View file

@ -408,10 +408,12 @@ group_commit (GstPlayBaseBin * play_base_bin, gboolean fatal, gboolean subtitle)
sig_id =
GPOINTER_TO_INT (g_object_get_data (G_OBJECT (element), "signal_id"));
if (sig_id) {
GST_LOG ("removing preroll signal %s", GST_ELEMENT_NAME (element));
g_signal_handler_disconnect (G_OBJECT (element), sig_id);
}
}
}
GST_DEBUG ("signal group done");
GROUP_SIGNAL (play_base_bin);
@ -501,10 +503,15 @@ queue_overrun (GstElement * element, GstPlayBaseBin * play_base_bin)
{
GST_DEBUG ("queue %s overrun", GST_ELEMENT_NAME (element));
group_commit (play_base_bin, FALSE, FALSE);
group_commit (play_base_bin, FALSE,
GST_OBJECT_PARENT (GST_OBJECT_CAST (element)) ==
GST_OBJECT (play_base_bin->subtitle));
g_signal_handlers_disconnect_by_func (element,
G_CALLBACK (queue_overrun), play_base_bin);
/* We have disconnected this signal, remove the signal_id from the object
data */
g_object_set_data (G_OBJECT (element), "signal_id", NULL);
}
/* Used for time-based buffering. */
@ -1057,7 +1064,7 @@ setup_subtitle (GstPlayBaseBin * play_base_bin, gchar * sub_uri)
return NULL;
subparse = gst_element_factory_make ("decodebin", "subtitle-decoder");
subbin = gst_bin_new ("subbin");
subbin = gst_bin_new ("subtitle-bin");
gst_bin_add_many (GST_BIN (subbin), source, subparse, NULL);
gst_element_link (source, subparse);
@ -1193,71 +1200,45 @@ setup_source (GstPlayBaseBin * play_base_bin, gchar ** new_location)
/* do subs */
if (subbin) {
#if 0
gint sig4, sig5, sig6;
GstElement *db;
play_base_bin->subtitle = subbin;
db = gst_bin_get_by_name (GST_BIN (subbin), "subtitle-decoder");
/* don't add yet, because we will preroll, and subs shouldn't
* preroll (we shouldn't preroll more than once source). */
gst_element_set_state (subbin, GST_STATE_PAUSED);
/* do type detection, without adding (so no preroll) */
g_signal_connect (G_OBJECT (db),
"new-decoded-pad", G_CALLBACK (new_decoded_pad), play_base_bin);
g_signal_connect (G_OBJECT (db), "new-decoded-pad",
G_CALLBACK (new_decoded_pad), play_base_bin);
g_signal_connect (G_OBJECT (db), "no-more-pads",
G_CALLBACK (no_more_pads), play_base_bin);
g_signal_connect (G_OBJECT (db), "unknown-type",
G_CALLBACK (unknown_type), play_base_bin);
if (!play_base_bin->is_stream) {
sig4 = g_signal_connect (G_OBJECT (db),
"unknown-type", G_CALLBACK (unknown_type), play_base_bin);
sig5 = g_signal_connect (G_OBJECT (subbin), "error",
G_CALLBACK (thread_error), error);
/* either when the queues are filled or when the decoder element
* has no more dynamic streams, the cond is unlocked. We can remove
* the signal handlers then
*/
g_mutex_lock (play_base_bin->group_lock);
if (gst_element_set_state (subbin, GST_STATE_PLAYING) ==
GST_STATE_CHANGE_SUCCESS) {
GST_DEBUG ("waiting for first group...");
sig6 = g_signal_connect (G_OBJECT (subbin),
"state-changed", G_CALLBACK (state_change), play_base_bin);
g_cond_wait (play_base_bin->group_cond, play_base_bin->group_lock);
GST_DEBUG ("group done !");
} else {
GST_DEBUG ("state change failed, subtitle cannot be loaded");
sig6 = 0;
}
g_mutex_unlock (play_base_bin->group_lock);
if (sig6 != 0)
g_signal_handler_disconnect (G_OBJECT (subbin), sig6);
g_signal_handler_disconnect (G_OBJECT (subbin), sig5);
g_signal_handler_disconnect (G_OBJECT (db), sig4);
gst_element_set_state (subbin, GST_STATE_PAUSED);
GROUP_LOCK (play_base_bin);
GST_DEBUG ("waiting for first group...");
GROUP_WAIT (play_base_bin);
GST_DEBUG ("group done !");
GROUP_UNLOCK (play_base_bin);
if (!play_base_bin->building_group ||
play_base_bin->building_group->type[GST_STREAM_TYPE_TEXT - 1].npads ==
0) {
if (*error) {
g_error_free (*error);
*error = NULL;
}
GST_DEBUG ("No subtitle found - ignoring");
gst_object_unref (play_base_bin->subtitle);
gst_element_set_state (subbin, GST_STATE_NULL);
gst_object_unref (GST_OBJECT (play_base_bin->subtitle));
play_base_bin->subtitle = NULL;
} else {
GST_DEBUG ("Subtitle set-up successful");
}
}
#endif
}
/* now see if the source element emits raw audio/video all by itself,
@ -1361,6 +1342,10 @@ setup_source (GstPlayBaseBin * play_base_bin, gchar ** new_location)
g_signal_connect (G_OBJECT (play_base_bin->decoder),
"unknown-type", G_CALLBACK (unknown_type), play_base_bin);
if (play_base_bin->subtitle) {
gst_bin_add (GST_BIN (play_base_bin), play_base_bin->subtitle);
}
play_base_bin->need_rebuild = FALSE;
return TRUE;
@ -1618,7 +1603,7 @@ set_active_source (GstPlayBaseBin * play_base_bin,
GST_LOG ("Muting group type: %d", type);
g_object_set (sel, "active-pad", "", NULL);
} else {
GST_LOG ("Unuting group type: %d", type);
GST_LOG ("Unmuting group type: %d", type);
}
mute_group_type (group, type, !have_active);
}

141
gst/playback/gstplaybin.c
View file

@ -265,6 +265,10 @@ gst_play_bin_dispose (GObject * object)
gst_object_unref (play_bin->pending_visualisation);
play_bin->pending_visualisation = NULL;
}
if (play_bin->textoverlay_element != NULL) {
gst_object_unref (play_bin->textoverlay_element);
play_bin->textoverlay_element = NULL;
}
g_free (play_bin->font_desc);
play_bin->font_desc = NULL;
@ -657,34 +661,53 @@ gen_text_element (GstPlayBin * play_bin)
GstElement *element, *csp, *overlay, *vbin;
GstPad *pad;
/* Create our bin */
element = gst_bin_new ("textbin");
/* Text overlay */
overlay = gst_element_factory_make ("textoverlay", "overlay");
/* Create the video rendering bin */
vbin = gen_video_element (play_bin);
/* If no overlay return the video bin */
if (!overlay) {
GST_WARNING ("No overlay (pango) element, subtitles disabled");
return vbin;
}
/* Set some parameters */
g_object_set (G_OBJECT (overlay),
"halign", "center", "valign", "bottom", NULL);
play_bin->textoverlay_element = overlay;
if (play_bin->font_desc) {
g_object_set (G_OBJECT (play_bin->textoverlay_element),
"font-desc", play_bin->font_desc, NULL);
}
vbin = gen_video_element (play_bin);
if (!overlay) {
g_warning ("No overlay (pango) element, subtitles disabled");
return vbin;
}
/* Take a ref */
play_bin->textoverlay_element = GST_ELEMENT (gst_object_ref (overlay));
csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
element = gst_bin_new ("textbin");
gst_element_link_many (csp, overlay, vbin, NULL);
/* Add our elements */
gst_bin_add_many (GST_BIN (element), csp, overlay, vbin, NULL);
/* Link */
gst_element_link_pads (csp, "src", overlay, "video_sink");
gst_element_link_pads (overlay, "src", vbin, "sink");
/* Add ghost pads on the subtitle bin */
pad = gst_element_get_pad (overlay, "text_sink");
#define gst_element_add_ghost_pad(element, pad, name) \
gst_element_add_pad (element, gst_ghost_pad_new (name, pad))
gst_element_add_ghost_pad (element, pad, "text_sink");
gst_element_add_pad (element, gst_ghost_pad_new ("text_sink", pad));
gst_object_unref (pad);
pad = gst_element_get_pad (csp, "sink");
gst_element_add_ghost_pad (element, pad, "sink");
gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
gst_object_unref (pad);
/* Set state to READY */
gst_element_set_state (element, GST_STATE_READY);
return element;
}
@ -751,7 +774,7 @@ gen_audio_element (GstPlayBin * play_bin)
gst_element_link_pads (volume, "src", sink, "sink");
pad = gst_element_get_pad (conv, "sink");
gst_element_add_ghost_pad (element, pad, "sink");
gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
gst_object_unref (pad);
gst_element_set_state (element, GST_STATE_READY);
@ -850,7 +873,7 @@ gen_vis_element (GstPlayBin * play_bin)
gst_object_unref (pad);
pad = gst_element_get_pad (tee, "sink");
gst_element_add_ghost_pad (element, pad, "sink");
gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
gst_object_unref (pad);
return element;
@ -942,7 +965,10 @@ remove_sinks (GstPlayBin * play_bin)
play_bin->frame = NULL;
}
if (play_bin->textoverlay_element) {
gst_object_unref (play_bin->textoverlay_element);
play_bin->textoverlay_element = NULL;
}
}
/* loop over the streams and set up the pipeline to play this
@ -955,7 +981,8 @@ remove_sinks (GstPlayBin * play_bin)
* one can switch the streams.
*/
static gboolean
add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad)
add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad,
GstPad * subtitle_pad)
{
GstPad *sinkpad;
GstPadLinkReturn linkres;
@ -988,8 +1015,19 @@ add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad)
if (GST_PAD_LINK_FAILED (linkres))
goto link_failed;
if (GST_IS_PAD (subtitle_pad)) {
sinkpad = gst_element_get_pad (sink, "text_sink");
linkres = gst_pad_link (subtitle_pad, sinkpad);
gst_object_unref (sinkpad);
}
/* try to link the subtitle pad of the sink to the stream */
if (GST_PAD_LINK_FAILED (linkres)) {
goto subtitle_failed;
}
/* we got the sink succesfully linked, now keep the sink
* in out internal list */
* in our internal list */
play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
return TRUE;
@ -1018,6 +1056,22 @@ link_failed:
gst_bin_remove (GST_BIN (play_bin), sink);
return FALSE;
}
subtitle_failed:
{
gchar *capsstr;
GstCaps *caps;
/* could not link this stream */
caps = gst_pad_get_caps (subtitle_pad);
capsstr = gst_caps_to_string (caps);
GST_DEBUG_OBJECT (play_bin,
"subtitle link failed when adding sink, caps %s, reason %d", capsstr,
linkres);
g_free (capsstr);
g_free (caps);
return TRUE;
}
}
static gboolean
@ -1027,7 +1081,7 @@ setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
GList *streaminfo = NULL, *s;
gboolean need_vis = FALSE;
gboolean need_text = FALSE;
GstPad *textsrcpad = NULL, *textsinkpad = NULL, *pad;
GstPad *textsrcpad = NULL, *pad = NULL;
GstElement *sink;
gboolean res = TRUE;
@ -1069,30 +1123,71 @@ setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
return FALSE;
pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_AUDIO - 1].preroll,
"src");
res = add_sink (play_bin, sink, pad);
res = add_sink (play_bin, sink, pad, NULL);
gst_object_unref (pad);
}
/* link video */
if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
if (need_text) {
sink = gen_text_element (play_bin);
GstObject *parent = NULL, *grandparent = NULL;
GstPad *ghost = NULL;
textsinkpad = gst_element_get_pad (sink, "text_sink");
sink = gen_text_element (play_bin);
textsrcpad =
gst_element_get_pad (group->type[GST_STREAM_TYPE_TEXT - 1].preroll,
"src");
gst_pad_link (textsrcpad, textsinkpad);
gst_object_unref (textsinkpad);
/* This pad is from subtitle-bin, we need to create a ghost pad to have
common grandparents */
parent = gst_object_get_parent (GST_OBJECT (textsrcpad));
if (!parent) {
GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no parent !");
gst_object_unref (textsrcpad);
textsrcpad = NULL;
goto beach;
}
grandparent = gst_object_get_parent (parent);
if (!grandparent) {
GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no grandparent !");
gst_object_unref (parent);
gst_object_unref (textsrcpad);
textsrcpad = NULL;
goto beach;
}
ghost = gst_ghost_pad_new ("text_src", textsrcpad);
if (!GST_IS_PAD (ghost)) {
GST_WARNING_OBJECT (textsrcpad, "failed creating ghost pad for "
"subtitle-bin");
gst_object_unref (parent);
gst_object_unref (grandparent);
gst_object_unref (textsrcpad);
textsrcpad = NULL;
goto beach;
}
if (gst_element_add_pad (GST_ELEMENT (grandparent), ghost)) {
gst_object_unref (textsrcpad);
textsrcpad = ghost;
} else {
GST_WARNING_OBJECT (ghost, "failed adding ghost pad on subtitle-bin");
gst_object_unref (ghost);
gst_object_unref (textsrcpad);
textsrcpad = NULL;
}
gst_object_unref (parent);
gst_object_unref (grandparent);
} else {
sink = gen_video_element (play_bin);
}
beach:
if (!sink)
return FALSE;
pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_VIDEO - 1].preroll,
"src");
res = add_sink (play_bin, sink, pad);
res = add_sink (play_bin, sink, pad, textsrcpad);
gst_object_unref (pad);
}