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make mad use g_object_notify instead of events - includes creation of properties
Original commit message from CVS: make mad use g_object_notify instead of events - includes creation of properties
This commit is contained in:
parent
f5e21a92f3
commit
d08e532655
2 changed files with 104 additions and 17 deletions
2
common
2
common
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@ -1 +1 @@
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Subproject commit 48638606945e579672f97b09cb797de3e6aee9e7
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Subproject commit c2d7711457d468d527890f2057883c133b50c3b7
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119
ext/mad/gstmad.c
119
ext/mad/gstmad.c
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@ -83,6 +83,12 @@ enum {
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enum {
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ARG_0,
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ARG_LAYER,
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ARG_MODE,
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ARG_EMPHASIS,
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ARG_BITRATE,
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ARG_SAMPLERATE,
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ARG_CHANNELS,
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/* FILL ME */
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};
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@ -120,6 +126,11 @@ static void gst_mad_class_init (GstMadClass *klass);
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static void gst_mad_init (GstMad *mad);
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static void gst_mad_dispose (GObject *object);
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static void gst_mad_set_property (GObject *object, guint prop_id,
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const GValue *value, GParamSpec *pspec);
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static void gst_mad_get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec);
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static void gst_mad_chain (GstPad *pad, GstBuffer *buffer);
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static GstElementStateReturn
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@ -150,6 +161,10 @@ gst_mad_get_type (void)
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return mad_type;
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}
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static gchar *layers[] = { "unknown", "I", "II", "III" };
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static gchar *modes[] = { "single channel", "dual channel", "joint stereo", "stereo" };
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static gchar *emphases[] = { "none", "50/15 microseconds", "CCITT J.17" };
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static void
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gst_mad_class_init (GstMadClass *klass)
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{
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@ -161,9 +176,34 @@ gst_mad_class_init (GstMadClass *klass)
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parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_mad_set_property;
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gobject_class->get_property = gst_mad_get_property;
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gobject_class->dispose = gst_mad_dispose;
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gstelement_class->change_state = gst_mad_change_state;
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/* init properties */
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/* currently, string representations are used, we might want to change that */
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/* FIXME: descriptions need to be more technical, default values and ranges need to be selected right */
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g_object_class_install_property (gobject_class, ARG_LAYER,
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g_param_spec_string ("layer", "Layer", "The audio MPEG Layer this stream is encoded in",
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layers[0], G_PARAM_READABLE));
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g_object_class_install_property (gobject_class, ARG_MODE,
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g_param_spec_string ("mode", "Mode", "The current mode of the channels",
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modes[0], G_PARAM_READABLE));
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g_object_class_install_property (gobject_class, ARG_EMPHASIS,
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g_param_spec_string ("emphasis", "Emphasis", "Emphasis",
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emphases[0], G_PARAM_READABLE));
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g_object_class_install_property (gobject_class, ARG_BITRATE,
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g_param_spec_int ("bitrate", "Bitrate", "current bitrate of the stream",
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0, G_MAXINT, 0, G_PARAM_READABLE));
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g_object_class_install_property (gobject_class, ARG_SAMPLERATE,
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g_param_spec_int ("samplerate", "Samplerate", "current samplerate of the stream",
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0, G_MAXINT, 0, G_PARAM_READABLE));
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g_object_class_install_property (gobject_class, ARG_CHANNELS,
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g_param_spec_int ("channels", "Channels", "number of channels",
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1, 2, 1, G_PARAM_READABLE));
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}
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static void
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@ -215,35 +255,82 @@ scale (mad_fixed_t sample)
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return sample >> (MAD_F_FRACBITS + 1 - 16);
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}
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static gchar *layers[] = { "unknown", "I", "II", "III" };
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static gchar *modes[] = { "single channel", "dual channel", "joint stereo", "stereo" };
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static gchar *emphases[] = { "none", "50/15 microseconds", "CCITT J.17" };
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/* do we need this function? */
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static void
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gst_mad_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstMad *mad;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_MAD (object));
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mad = GST_MAD (object);
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_mad_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstMad *mad;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_MAD (object));
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mad = GST_MAD (object);
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switch (prop_id) {
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case ARG_LAYER:
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g_value_set_string (value, layers[mad->header.layer]);
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break;
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case ARG_MODE:
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g_value_set_string (value, modes[mad->header.mode]);
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break;
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case ARG_EMPHASIS:
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g_value_set_string (value, emphases[mad->header.emphasis]);
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break;
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case ARG_BITRATE:
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g_value_set_int (value, mad->header.bitrate);
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break;
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case ARG_SAMPLERATE:
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g_value_set_int (value, mad->header.samplerate);
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break;
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case ARG_CHANNELS:
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g_value_set_int (value, mad->channels);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_mad_update_info (GstMad *mad, struct mad_header const *header)
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{
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#define CHECK_HEADER(h1,str,prop) \
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#define CHECK_HEADER(h1,str) \
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G_STMT_START{ \
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if (mad->header.h1 != header->h1 || mad->new_header) { \
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mad->header.h1 = header->h1; \
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gst_element_send_event (GST_ELEMENT (mad), \
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gst_event_new_info (str, prop, NULL)); \
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g_object_notify (G_OBJECT (mad), str); \
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}; \
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}G_STMT_END
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} G_STMT_END
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CHECK_HEADER (layer, "layer", GST_PROPS_STRING (layers[header->layer]));
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CHECK_HEADER (mode, "mode", GST_PROPS_STRING (modes[header->mode]));
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CHECK_HEADER (emphasis, "emphasis", GST_PROPS_STRING (emphases[header->emphasis]));
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CHECK_HEADER (bitrate, "bitrate", GST_PROPS_INT (header->bitrate));
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CHECK_HEADER (samplerate, "samplerate", GST_PROPS_INT (header->samplerate));
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g_object_freeze_notify (G_OBJECT (mad));
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CHECK_HEADER (layer, "layer");
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CHECK_HEADER (mode, "mode");
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CHECK_HEADER (emphasis, "emphasis");
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CHECK_HEADER (bitrate, "bitrate");
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CHECK_HEADER (samplerate, "samplerate");
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if (mad->channels != MAD_NCHANNELS (header) || mad->new_header) {
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mad->channels = MAD_NCHANNELS (header);
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gst_element_send_event (GST_ELEMENT (mad),
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gst_event_new_info ("channels", GST_PROPS_INT (mad->channels), NULL));
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g_object_notify (G_OBJECT (mad), "channels");
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}
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mad->new_header = FALSE;
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g_object_thaw_notify (G_OBJECT (mad));
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#undef CHECK_HEADER
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}
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static void
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