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Add metadata (only vorbis comment)

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Original commit message from CVS:
Add metadata (only vorbis comment)
This commit is contained in:
Jeremy Simon 2003-04-27 12:00:41 +00:00
parent 4f40d61f7c
commit bd1013b086
2 changed files with 116 additions and 2 deletions
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117
ext/flac/gstflacdec.c
View file

@ -46,6 +46,7 @@ enum {
enum {
ARG_0,
ARG_METADATA
};
static void gst_flacdec_class_init (FlacDecClass *klass);
@ -64,6 +65,14 @@ static gboolean gst_flacdec_src_query (GstPad *pad, GstQueryType type,
static const GstEventMask*
gst_flacdec_get_src_event_masks (GstPad *pad);
static gboolean gst_flacdec_src_event (GstPad *pad, GstEvent *event);
static void gst_flacdec_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gst_flacdec_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static FLAC__SeekableStreamDecoderReadStatus
gst_flacdec_read (const FLAC__SeekableStreamDecoder *decoder,
@ -120,11 +129,20 @@ static void
gst_flacdec_class_init (FlacDecClass *klass)
{
GstElementClass *gstelement_class;
GObjectClass *gobject_class;
gstelement_class = (GstElementClass*)klass;
gobject_class = (GObjectClass*) klass;
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
g_object_class_install_property (gobject_class, ARG_METADATA,
g_param_spec_boxed ("metadata", "Metadata", "(logical) Stream metadata",
GST_TYPE_CAPS, G_PARAM_READABLE));
gobject_class->get_property = gst_flacdec_get_property;
gobject_class->set_property = gst_flacdec_set_property;
gstelement_class->change_state = gst_flacdec_change_state;
}
@ -150,6 +168,7 @@ gst_flacdec_init (FlacDec *flacdec)
flacdec->init = TRUE;
flacdec->eos = FALSE;
flacdec->seek_pending = FALSE;
flacdec->metadata = NULL;
FLAC__seekable_stream_decoder_set_read_callback (flacdec->decoder, gst_flacdec_read);
FLAC__seekable_stream_decoder_set_seek_callback (flacdec->decoder, gst_flacdec_seek);
@ -167,20 +186,80 @@ gst_flacdec_init (FlacDec *flacdec)
void *client_data))
(gst_flacdec_write));
#endif
FLAC__seekable_stream_decoder_set_metadata_respond (flacdec->decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__seekable_stream_decoder_set_metadata_callback (flacdec->decoder, gst_flacdec_metadata_callback);
FLAC__seekable_stream_decoder_set_error_callback (flacdec->decoder, gst_flacdec_error_callback);
FLAC__seekable_stream_decoder_set_client_data (flacdec->decoder, flacdec);
}
static gboolean
gst_flacdec_update_metadata (FlacDec *flacdec, const FLAC__StreamMetadata *metadata)
{
guint32 number_of_comments, cursor, str_len;
gchar *p_value, *value, *name, *str_ptr;
GstProps *props = NULL;
GstPropsEntry *entry;
/* clear old one */
if (flacdec->metadata) {
gst_caps_unref (flacdec->metadata);
flacdec->metadata = NULL;
}
/* create props to hold the key/value pairs */
props = gst_props_empty_new ();
number_of_comments = metadata->data.vorbis_comment.num_comments;
value = NULL;
GST_DEBUG (GST_CAT_CAPS, "%d tag(s) found", number_of_comments);
for (cursor = 0; cursor < number_of_comments; cursor++)
{
str_ptr = metadata->data.vorbis_comment.comments[cursor].entry;
str_len = GUINT32_FROM_LE (metadata->data.vorbis_comment.comments[cursor].length);
p_value = g_strstr_len ( str_ptr, str_len , "=" );
if (p_value)
{
name = g_strndup (str_ptr, p_value - str_ptr);
value = g_strndup (p_value + 1, str_ptr + str_len - p_value);
entry = gst_props_entry_new (name, GST_PROPS_STRING_TYPE, value);
gst_props_add_entry (props, (GstPropsEntry *) entry);
GST_DEBUG (GST_CAT_CAPS, "%s : %s", name, value);
g_free (name);
g_free (value);
}
}
flacdec->metadata = gst_caps_new ("vorbisfile_metadata",
"application/x-gst-metadata",
props);
g_object_notify (G_OBJECT (flacdec), "metadata");
return TRUE;
}
static void
gst_flacdec_metadata_callback (const FLAC__SeekableStreamDecoder *decoder,
const FLAC__StreamMetadata *metadata, void *client_data)
{
FlacDec *flacdec;
flacdec = GST_FLACDEC (client_data);
flacdec->stream_samples = metadata->data.stream_info.total_samples;
switch (metadata->type)
{
case FLAC__METADATA_TYPE_STREAMINFO:
flacdec->stream_samples = metadata->data.stream_info.total_samples;
break;
case FLAC__METADATA_TYPE_VORBIS_COMMENT:
gst_flacdec_update_metadata (flacdec, metadata);
break;
default:
break;
}
}
static void
@ -656,3 +735,37 @@ gst_flacdec_change_state (GstElement *element)
return GST_STATE_SUCCESS;
}
static void
gst_flacdec_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec)
{
FlacDec *flacdec;
g_return_if_fail (GST_IS_FLACDEC (object));
flacdec = GST_FLACDEC (object);
switch (prop_id) {
default:
g_warning ("Unknown property id\n");
}
}
static void
gst_flacdec_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec)
{
FlacDec *flacdec;
g_return_if_fail (GST_IS_FLACDEC(object));
flacdec = GST_FLACDEC (object);
switch (prop_id) {
case ARG_METADATA:
g_value_set_boxed (value, flacdec->metadata);
break;
default:
g_warning ("Unknown property id\n");
}
}

1
ext/flac/gstflacdec.h
View file

@ -46,6 +46,7 @@ struct _FlacDec {
GstElement element;
GstPad *sinkpad,*srcpad;
GstCaps *metadata;
GstByteStream *bs;
FLAC__SeekableStreamDecoder *decoder;