* <refsect2>
* <title>Example pipelines</title>
* |[
- * gst-launch filesrc location=music.mp3 ! mad ! audioconvert ! audioresample ! autoaudiosink
- * ]| Decode the mp3 file and play
+ * gst-launch filesrc location=music.mp3 ! mpegaudioparse ! mad ! audioconvert ! audioresample ! autoaudiosink
+ * ]| Decode and play the mp3 file
* </refsect2>
*/
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("audio/x-raw-int, "
- "endianness = (int) " G_STRINGIFY (G_BYTE_ORDER) ", "
- "signed = (boolean) true, "
- "width = (int) 32, "
- "depth = (int) 32, "
+ GST_STATIC_CAPS ("audio/x-raw, "
+ "format = (string) " GST_AUDIO_NE (S32) ", "
"rate = (int) { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }, "
"channels = (int) [ 1, 2 ]")
);
static void gst_mad_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
-GST_BOILERPLATE (GstMad, gst_mad, GstAudioDecoder, GST_TYPE_AUDIO_DECODER);
-
-static void
-gst_mad_base_init (gpointer g_class)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&mad_sink_template_factory));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&mad_src_template_factory));
- gst_element_class_set_details_simple (element_class, "mad mp3 decoder",
- "Codec/Decoder/Audio",
- "Uses mad code to decode mp3 streams", "Wim Taymans <wim@fluendo.com>");
-}
+G_DEFINE_TYPE (GstMad, gst_mad, GST_TYPE_AUDIO_DECODER);
static void
gst_mad_class_init (GstMadClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
+ GstElementClass *element_class = (GstElementClass *) klass;
GstAudioDecoderClass *base_class = (GstAudioDecoderClass *) klass;
- parent_class = g_type_class_peek_parent (klass);
-
base_class->start = GST_DEBUG_FUNCPTR (gst_mad_start);
base_class->stop = GST_DEBUG_FUNCPTR (gst_mad_stop);
base_class->parse = GST_DEBUG_FUNCPTR (gst_mad_parse);
g_object_class_install_property (gobject_class, ARG_IGNORE_CRC,
g_param_spec_boolean ("ignore-crc", "Ignore CRC", "Ignore CRC errors",
TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&mad_sink_template_factory));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&mad_src_template_factory));
+
+ gst_element_class_set_details_simple (element_class, "mad mp3 decoder",
+ "Codec/Decoder/Audio",
+ "Uses mad code to decode mp3 streams", "Wim Taymans <wim@fluendo.com>");
}
static void
-gst_mad_init (GstMad * mad, GstMadClass * klass)
+gst_mad_init (GstMad * mad)
{
GstAudioDecoder *dec;
/* we set the caps even when the pad is not connected so they
* can be gotten for streaminfo */
- caps = gst_caps_new_simple ("audio/x-raw-int",
- "endianness", G_TYPE_INT, G_BYTE_ORDER,
+ caps = gst_caps_new_simple ("audio/x-raw",
+ "format", G_TYPE_STRING, GST_AUDIO_NE (S32),
"signed", G_TYPE_BOOLEAN, TRUE,
"width", G_TYPE_INT, 32,
"depth", G_TYPE_INT, 32,
"rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, nchannels, NULL);
- gst_pad_set_caps (GST_AUDIO_DECODER_SRC_PAD (mad), caps);
+ gst_audio_decoder_set_outcaps (GST_AUDIO_DECODER (mad), caps);
gst_caps_unref (caps);
mad->caps_set = TRUE;
}
}
+/* FIXME: does this work properly at all? filesrc ! mad ! pulsesink fails */
static GstFlowReturn
gst_mad_parse (GstAudioDecoder * dec, GstAdapter * adapter,
gint * _offset, gint * len)
prev_offset = -1;
offset = 0;
av = gst_adapter_available (adapter);
+ data = gst_adapter_map (adapter, av);
+
while (offset < av) {
size = MIN (MAD_BUFFER_MDLEN * 3, av - offset);
- data = gst_adapter_peek (adapter, av);
/* check for mad asking too much */
if (offset == prev_offset) {
}
exit:
+
+ gst_adapter_unmap (adapter);
+
*_offset = offset;
*len = consumed;
* and update later on if needed */
gst_mad_check_caps_reset (mad);
- // TODO more generic check and size check ?
- ret = gst_pad_alloc_buffer_and_set_caps (GST_AUDIO_DECODER_SRC_PAD (dec),
- 0, nsamples * mad->channels * 4,
- GST_PAD_CAPS (GST_AUDIO_DECODER_SRC_PAD (dec)), &outbuffer);
- if (ret != GST_FLOW_OK) {
- /* Head for the exit, dropping samples as we go */
- GST_LOG_OBJECT (dec,
- "Skipping frame synthesis due to pad_alloc return value");
- gst_audio_decoder_finish_frame (dec, NULL, 1);
- goto exit;
- }
-
mad_synth_frame (&mad->synth, &mad->frame);
left_ch = mad->synth.pcm.samples[0];
right_ch = mad->synth.pcm.samples[1];
- outdata = (gint32 *) GST_BUFFER_DATA (outbuffer);
+ outbuffer = gst_buffer_new_and_alloc (nsamples * mad->channels * 4);
+
+ outdata = gst_buffer_map (outbuffer, NULL, NULL, GST_MAP_WRITE);
/* output sample(s) in 16-bit signed native-endian PCM */
if (mad->channels == 1) {
}
}
+ gst_buffer_unmap (outbuffer, outdata, -1);
+
ret = gst_audio_decoder_finish_frame (dec, outbuffer, 1);
-exit:
+
return ret;
}
/* plugin initialisation */
-gboolean
-gst_mad_register (GstPlugin * plugin)
+static gboolean
+plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (mad_debug, "mad", 0, "mad mp3 decoding");
+ /* FIXME 0.11: rename to something better like madmp3dec or madmpegaudiodec
+ * or so? */
return gst_element_register (plugin, "mad", GST_RANK_NONE,
gst_mad_get_type ());
}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "mad",
+ "mp3 decoding based on the mad library",
+ plugin_init, VERSION, "GPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);