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playbin: New text-offset property

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This new property controls the synchronisation offset between the text and video
streams. Positive values make the text ahead of the video and negative values
make the text go behind the video.

https://bugzilla.gnome.org/show_bug.cgi?id=797134
This commit is contained in:
Philippe Normand 2018-10-28 14:43:01 +00:00
parent ea3b074ead
commit dc5006fa25
1 changed files with 22 additions and 0 deletions
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22
gst/playback/gstplaybin2.c
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@ -553,6 +553,7 @@ enum
PROP_BUFFER_SIZE,
PROP_BUFFER_DURATION,
PROP_AV_OFFSET,
PROP_TEXT_OFFSET,
PROP_RING_BUFFER_MAX_SIZE,
PROP_FORCE_ASPECT_RATIO,
PROP_AUDIO_FILTER,
@ -955,6 +956,19 @@ gst_play_bin_class_init (GstPlayBinClass * klass)
G_MININT64, G_MAXINT64, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstPlayBin:text-offset:
*
* Control the synchronisation offset between the text and video streams.
* Positive values make the text ahead of the video and negative values make
* the text go behind the video.
*/
g_object_class_install_property (gobject_klass, PROP_TEXT_OFFSET,
g_param_spec_int64 ("text-offset", "Text Offset",
"The synchronisation offset between text and video in nanoseconds",
G_MININT64, G_MAXINT64, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstPlayBin:ring-buffer-max-size
*
@ -2465,6 +2479,10 @@ gst_play_bin_set_property (GObject * object, guint prop_id,
gst_play_sink_set_av_offset (playbin->playsink,
g_value_get_int64 (value));
break;
case PROP_TEXT_OFFSET:
gst_play_sink_set_text_offset (playbin->playsink,
g_value_get_int64 (value));
break;
case PROP_RING_BUFFER_MAX_SIZE:
playbin->ring_buffer_max_size = g_value_get_uint64 (value);
if (playbin->curr_group) {
@ -2723,6 +2741,10 @@ gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
g_value_set_int64 (value,
gst_play_sink_get_av_offset (playbin->playsink));
break;
case PROP_TEXT_OFFSET:
g_value_set_int64 (value,
gst_play_sink_get_text_offset (playbin->playsink));
break;
case PROP_RING_BUFFER_MAX_SIZE:
g_value_set_uint64 (value, playbin->ring_buffer_max_size);
break;