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gst/playback/: Add get-video-pad, get-audio-pad, get-text-pad action signals to playbin2. This allows the user to get...

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Original commit message from CVS:
* gst/playback/gstplay-marshal.list:
* gst/playback/gstplaybin2.c:
Add get-video-pad, get-audio-pad, get-text-pad action signals to
playbin2. This allows the user to get to the selector's sinkpads, and
thus inspect a range of things - caps, tags, etc.
This commit is contained in:
Michael Smith 2008-06-20 18:24:24 +00:00
parent f5b9e8c065
commit 6ef8ecd7a3
3 changed files with 132 additions and 4 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2008-06-20 Michael Smith <msmith@songbirdnest.com>
* gst/playback/gstplay-marshal.list:
* gst/playback/gstplaybin2.c:
Add get-video-pad, get-audio-pad, get-text-pad action signals to
playbin2. This allows the user to get to the selector's sinkpads, and
thus inspect a range of things - caps, tags, etc.
2008-06-20 Michael Smith <msmith@songbirdnest.com>
* gst/playback/gstplaybin2.c:

1
gst/playback/gstplay-marshal.list
View file

@ -7,3 +7,4 @@ ENUM:OBJECT,BOXED,OBJECT
BOXED:OBJECT,BOXED,BOXED
BOXED:INT
OBJECT:BOXED
OBJECT:INT

127
gst/playback/gstplaybin2.c
View file

@ -259,8 +259,6 @@
#include "gstplaysink.h"
#include "gstfactorylists.h"
#include "gstscreenshot.h"
#include "gststreaminfo.h"
#include "gststreamselector.h"
GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
#define GST_CAT_DEFAULT gst_play_bin_debug
@ -388,6 +386,11 @@ struct _GstPlayBinClass
/* get the last video frame and convert it to the given caps */
GstBuffer *(*convert_frame) (GstPlayBin * playbin, GstCaps * caps);
/* get audio/video/text pad for a stream */
GstPad *(*get_video_pad) (GstPlayBin * playbin, gint stream);
GstPad *(*get_audio_pad) (GstPlayBin * playbin, gint stream);
GstPad *(*get_text_pad) (GstPlayBin * playbin, gint stream);
};
/* props */
@ -447,6 +450,9 @@ enum
SIGNAL_GET_VIDEO_TAGS,
SIGNAL_GET_AUDIO_TAGS,
SIGNAL_GET_TEXT_TAGS,
SIGNAL_GET_VIDEO_PAD,
SIGNAL_GET_AUDIO_PAD,
SIGNAL_GET_TEXT_PAD,
LAST_SIGNAL
};
@ -474,6 +480,10 @@ static GstTagList *gst_play_bin_get_text_tags (GstPlayBin * playbin,
static GstBuffer *gst_play_bin_convert_frame (GstPlayBin * playbin,
GstCaps * caps);
static GstPad *gst_play_bin_get_video_pad (GstPlayBin * playbin, gint stream);
static GstPad *gst_play_bin_get_audio_pad (GstPlayBin * playbin, gint stream);
static GstPad *gst_play_bin_get_text_pad (GstPlayBin * playbin, gint stream);
static gboolean setup_next_source (GstPlayBin * playbin);
static GstElementClass *parent_class;
@ -829,12 +839,68 @@ gst_play_bin_class_init (GstPlayBinClass * klass)
G_STRUCT_OFFSET (GstPlayBinClass, convert_frame), NULL, NULL,
gst_play_marshal_BUFFER__BOXED, GST_TYPE_BUFFER, 1, GST_TYPE_CAPS);
/**
* GstPlayBin2::get-video-pad
* @playbin: a #GstPlayBin2
* @stream: a video stream number
*
* Action signal to retrieve the stream-selector sinkpad for a specific
* video stream.
* This pad can be used for notifications of caps changes, stream-specific
* queries, etc.
*
* Returns: a #GstPad, or NULL when the stream number does not exist.
*/
gst_play_bin_signals[SIGNAL_GET_VIDEO_PAD] =
g_signal_new ("get-video-pad", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstPlayBinClass, get_video_pad), NULL, NULL,
gst_play_marshal_OBJECT__INT, GST_TYPE_PAD, 1, G_TYPE_INT);
/**
* GstPlayBin2::get-audio-pad
* @playbin: a #GstPlayBin2
* @stream: an audio stream number
*
* Action signal to retrieve the stream-selector sinkpad for a specific
* audio stream.
* This pad can be used for notifications of caps changes, stream-specific
* queries, etc.
*
* Returns: a #GstPad, or NULL when the stream number does not exist.
*/
gst_play_bin_signals[SIGNAL_GET_AUDIO_PAD] =
g_signal_new ("get-audio-pad", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstPlayBinClass, get_audio_pad), NULL, NULL,
gst_play_marshal_OBJECT__INT, GST_TYPE_PAD, 1, G_TYPE_INT);
/**
* GstPlayBin2::get-text-pad
* @playbin: a #GstPlayBin2
* @stream: a text stream number
*
* Action signal to retrieve the stream-selector sinkpad for a specific
* text stream.
* This pad can be used for notifications of caps changes, stream-specific
* queries, etc.
*
* Returns: a #GstPad, or NULL when the stream number does not exist.
*/
gst_play_bin_signals[SIGNAL_GET_TEXT_PAD] =
g_signal_new ("get-text-pad", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstPlayBinClass, get_text_pad), NULL, NULL,
gst_play_marshal_OBJECT__INT, GST_TYPE_PAD, 1, G_TYPE_INT);
klass->get_video_tags = gst_play_bin_get_video_tags;
klass->get_audio_tags = gst_play_bin_get_audio_tags;
klass->get_text_tags = gst_play_bin_get_text_tags;
klass->convert_frame = gst_play_bin_convert_frame;
klass->get_video_pad = gst_play_bin_get_video_pad;
klass->get_audio_pad = gst_play_bin_get_audio_pad;
klass->get_text_pad = gst_play_bin_get_text_pad;
gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
gstelement_klass->change_state =
@ -905,10 +971,11 @@ gst_play_bin_init (GstPlayBin * playbin)
gst_bin_add (GST_BIN_CAST (playbin), GST_ELEMENT_CAST (playbin->playsink));
gst_play_sink_set_flags (playbin->playsink, DEFAULT_FLAGS);
playbin->encoding = g_strdup (DEFAULT_SUBTITLE_ENCODING);
playbin->current_video = DEFAULT_CURRENT_VIDEO;
playbin->current_audio = DEFAULT_CURRENT_AUDIO;
playbin->current_text = DEFAULT_CURRENT_TEXT;
playbin->encoding = g_strdup (DEFAULT_SUBTITLE_ENCODING);
}
static void
@ -989,13 +1056,65 @@ get_group (GstPlayBin * playbin)
return result;
}
static GstPad *
gst_play_bin_get_video_pad (GstPlayBin * playbin, gint stream)
{
GstPad *sinkpad = NULL;
GstSourceGroup *group;
GST_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
if (stream < group->video_channels->len) {
sinkpad = g_ptr_array_index (group->video_channels, stream);
gst_object_ref (sinkpad);
}
GST_PLAY_BIN_UNLOCK (playbin);
return sinkpad;
}
static GstPad *
gst_play_bin_get_audio_pad (GstPlayBin * playbin, gint stream)
{
GstPad *sinkpad = NULL;
GstSourceGroup *group;
GST_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
if (stream < group->audio_channels->len) {
sinkpad = g_ptr_array_index (group->audio_channels, stream);
gst_object_ref (sinkpad);
}
GST_PLAY_BIN_UNLOCK (playbin);
return sinkpad;
}
static GstPad *
gst_play_bin_get_text_pad (GstPlayBin * playbin, gint stream)
{
GstPad *sinkpad = NULL;
GstSourceGroup *group;
GST_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
if (stream < group->text_channels->len) {
sinkpad = g_ptr_array_index (group->text_channels, stream);
gst_object_ref (sinkpad);
}
GST_PLAY_BIN_UNLOCK (playbin);
return sinkpad;
}
static GstTagList *
get_tags (GstPlayBin * playbin, GPtrArray * channels, gint stream)
{
GstTagList *result;
GstPad *sinkpad;
if (!channels || channels->len < stream)
if (!channels || stream >= channels->len)
return NULL;
sinkpad = g_ptr_array_index (channels, stream);