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decodebin3: Add new about-to-finish signal

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This commit is contained in:
Edward Hervey 2017-12-08 17:01:05 +01:00 committed by Edward Hervey
parent c136acf27a
commit 401cadfd74
1 changed files with 47 additions and 0 deletions
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47
gst/playback/gstdecodebin3.c
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@ -278,6 +278,12 @@ struct _DecodebinInput
gulong pad_added_sigid;
gulong pad_removed_sigid;
gulong drained_sigid;
/* TRUE if the input got drained
* FIXME : When do we reset it if re-used ?
*/
gboolean drained;
/* HACK : Remove these fields */
/* List of PendingPad structures */
@ -357,6 +363,7 @@ enum
enum
{
SIGNAL_SELECT_STREAM,
SIGNAL_ABOUT_TO_FINISH,
LAST_SIGNAL
};
static guint gst_decodebin3_signals[LAST_SIGNAL] = { 0 };
@ -548,6 +555,17 @@ gst_decodebin3_class_init (GstDecodebin3Class * klass)
_gst_int_accumulator, NULL, g_cclosure_marshal_generic,
G_TYPE_INT, 2, GST_TYPE_STREAM_COLLECTION, GST_TYPE_STREAM);
/**
* GstDecodebin3::about-to-finish:
*
* This signal is emitted when the data for the selected URI is
* entirely buffered and it is safe to specify anothe URI.
*/
gst_decodebin3_signals[SIGNAL_ABOUT_TO_FINISH] =
g_signal_new ("about-to-finish", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE,
0, G_TYPE_NONE);
element_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_decodebin3_request_new_pad);
@ -713,6 +731,30 @@ set_input_group_id (DecodebinInput * input, guint32 * group_id)
return FALSE;
}
static void
parsebin_drained_cb (GstElement * parsebin, DecodebinInput * input)
{
GstDecodebin3 *dbin = input->dbin;
gboolean all_drained;
GList *tmp;
GST_WARNING_OBJECT (dbin, "input %p drained", input);
input->drained = TRUE;
all_drained = dbin->main_input->drained;
for (tmp = dbin->other_inputs; tmp; tmp = tmp->next) {
DecodebinInput *data = (DecodebinInput *) tmp->data;
all_drained &= data->drained;
}
if (all_drained) {
GST_WARNING_OBJECT (dbin, "All inputs drained. Posting about-to-finish");
g_signal_emit (dbin, gst_decodebin3_signals[SIGNAL_ABOUT_TO_FINISH], 0,
NULL);
}
}
/* Call with INPUT_LOCK taken */
static gboolean
ensure_input_parsebin (GstDecodebin3 * dbin, DecodebinInput * input)
@ -731,6 +773,9 @@ ensure_input_parsebin (GstDecodebin3 * dbin, DecodebinInput * input)
input->pad_removed_sigid =
g_signal_connect (input->parsebin, "pad-removed",
(GCallback) parsebin_pad_removed_cb, input);
input->drained_sigid =
g_signal_connect (input->parsebin, "drained",
(GCallback) parsebin_drained_cb, input);
g_signal_connect (input->parsebin, "autoplug-continue",
(GCallback) parsebin_autoplug_continue_cb, dbin);
}
@ -853,6 +898,7 @@ gst_decodebin3_input_pad_unlink (GstPad * pad, GstObject * parent)
gst_element_set_state (input->parsebin, GST_STATE_NULL);
g_signal_handler_disconnect (input->parsebin, input->pad_removed_sigid);
g_signal_handler_disconnect (input->parsebin, input->pad_added_sigid);
g_signal_handler_disconnect (input->parsebin, input->drained_sigid);
gst_pad_remove_probe (input->parsebin_sink, probe_id);
gst_object_unref (input->parsebin);
gst_object_unref (input->parsebin_sink);
@ -882,6 +928,7 @@ free_input (GstDecodebin3 * dbin, DecodebinInput * input)
if (input->parsebin) {
g_signal_handler_disconnect (input->parsebin, input->pad_removed_sigid);
g_signal_handler_disconnect (input->parsebin, input->pad_added_sigid);
g_signal_handler_disconnect (input->parsebin, input->drained_sigid);
gst_element_set_state (input->parsebin, GST_STATE_NULL);
gst_object_unref (input->parsebin);
gst_object_unref (input->parsebin_sink);