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audiocdsrc: post TOC message on the bus on start-up

Browse source 
First attempt at implement the various GstToc API
bits in GstAudioCdSrc.

https://bugzilla.gnome.org/show_bug.cgi?id=668996
This commit is contained in:
Tim-Philipp Müller 2012-06-26 19:50:49 +01:00
parent f28e2e7bea
commit b27c649a48
1 changed files with 77 additions and 0 deletions
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77
gst-libs/gst/audio/gstaudiocdsrc.c
View file

@ -87,6 +87,7 @@
#include <string.h>
#include <stdlib.h> /* for strtol */
#include <stdio.h>
#include <gst/tag/tag.h>
#include <gst/audio/audio.h>
@ -144,6 +145,8 @@ struct _GstAudioCdSrcPrivate
gint toc_offset;
gboolean toc_bias;
GstToc *toc;
};
static void gst_audio_cd_src_uri_handler_init (gpointer g_iface,
@ -726,6 +729,13 @@ gst_audio_cd_src_query (GstBaseSrc * basesrc, GstQuery * query)
gst_query_set_convert (query, src_format, src_val, dest_format, dest_val);
break;
}
case GST_QUERY_TOC:{
if (src->priv->toc == NULL)
return FALSE;
gst_query_set_toc (query, src->priv->toc, NULL);
break;
}
default:{
GST_DEBUG_OBJECT (src, "unhandled query, chaining up to parent class");
return GST_BASE_SRC_CLASS (parent_class)->query (basesrc, query);
@ -939,6 +949,17 @@ gst_audio_cd_src_handle_event (GstBaseSrc * basesrc, GstEvent * event)
}
break;
}
case GST_EVENT_TOC_SELECT:{
guint track_num = 0;
gchar *uid = NULL;
gst_event_parse_toc_select (event, &uid);
if (uid != NULL && sscanf (uid, "audiocd-track-%03u", &track_num) == 1) {
ret = gst_audio_cd_src_handle_track_seek (src, 1.0, GST_SEEK_FLAG_FLUSH,
GST_SEEK_TYPE_SET, track_num, GST_SEEK_TYPE_NONE, -1);
}
break;
}
default:{
GST_LOG_OBJECT (src, "let base class handle event");
ret = GST_BASE_SRC_CLASS (parent_class)->event (basesrc, event);
@ -1375,6 +1396,56 @@ gst_audio_cd_src_add_tags (GstAudioCdSrc * src)
GST_DEBUG ("src->tags = %" GST_PTR_FORMAT, src->tags);
}
static void
gst_audio_cd_src_add_toc (GstAudioCdSrc * src)
{
GQueue entries = G_QUEUE_INIT;
GstToc *toc;
gint i;
toc = gst_toc_new ();
for (i = 0; i < src->priv->num_tracks; ++i) {
GstAudioCdSrcTrack *track;
gint64 start_time, stop_time;
GstTocEntry *entry;
gchar *uid;
track = &src->priv->tracks[i];
/* keep uid in sync with toc select event handler below */
uid = g_strdup_printf ("audiocd-track-%03u", track->num);
entry = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_TRACK, uid);
/* FIXME: why does it alloc an empty tag list? */
if (entry->tags != NULL)
gst_tag_list_free (entry->tags);
entry->tags = gst_tag_list_ref (track->tags);
gst_audio_cd_src_convert (src, sector_format, track->start,
GST_FORMAT_TIME, &start_time);
gst_audio_cd_src_convert (src, sector_format, track->end + 1,
GST_FORMAT_TIME, &stop_time);
GST_INFO ("Track %03u %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT,
track->num, GST_TIME_ARGS (start_time), GST_TIME_ARGS (stop_time));
gst_toc_entry_set_start_stop (entry, start_time, stop_time);
g_queue_push_tail (&entries, entry);
g_free (uid);
}
toc->entries = entries.head;
gst_element_post_message (GST_ELEMENT_CAST (src),
gst_message_new_toc (GST_OBJECT (src), toc, FALSE));
/* should we also push a TOC event downstream? Might only make sense if
* we're in continuous mode. e.g. matroska-mux will just write the TOC to
* file, but we might only be outputting a single track, so that doesn't
* make sense. */
src->priv->toc = toc;
}
#if 0
static void
gst_audio_cd_src_add_index_associations (GstAudioCdSrc * src)
@ -1523,6 +1594,7 @@ gst_audio_cd_src_start (GstBaseSrc * basesrc)
goto no_tracks;
gst_audio_cd_src_add_tags (src);
gst_audio_cd_src_add_toc (src);
#if 0
if (src->priv->index && GST_INDEX_IS_WRITABLE (src->priv->index))
@ -1599,6 +1671,11 @@ gst_audio_cd_src_stop (GstBaseSrc * basesrc)
src->tags = NULL;
}
if (src->priv->toc) {
gst_toc_unref (src->priv->toc);
src->priv->toc = NULL;
}
src->priv->prev_track = -1;
src->priv->cur_track = -1;