static GstBufferList *
_create_buffer_list (guint * data_size)
{
GstBufferList *list;
GstBufferListIterator *it;
GstBuffer *rtp_buffer;
GstBuffer *data_buffer;
list = gst_buffer_list_new ();
it = gst_buffer_list_iterate (list);
/*** First group, i.e. first packet. **/
/* Create the RTP header buffer */
rtp_buffer = gst_buffer_new ();
GST_BUFFER_MALLOCDATA (rtp_buffer) = g_malloc (RTP_HEADER_SIZE);
GST_BUFFER_DATA (rtp_buffer) = GST_BUFFER_MALLOCDATA (rtp_buffer);
GST_BUFFER_SIZE (rtp_buffer) = RTP_HEADER_SIZE;
memset (GST_BUFFER_DATA (rtp_buffer), 0, RTP_HEADER_SIZE);
/* Create the buffer that holds the payload */
data_buffer = gst_buffer_new ();
GST_BUFFER_MALLOCDATA (data_buffer) = g_malloc (RTP_PAYLOAD_SIZE);
GST_BUFFER_DATA (data_buffer) = GST_BUFFER_MALLOCDATA (data_buffer);
GST_BUFFER_SIZE (data_buffer) = RTP_PAYLOAD_SIZE;
memset (GST_BUFFER_DATA (data_buffer), 0, RTP_PAYLOAD_SIZE);
/* Create a new group to hold the rtp header and the payload */
gst_buffer_list_iterator_add_group (it);
gst_buffer_list_iterator_add (it, rtp_buffer);
gst_buffer_list_iterator_add (it, data_buffer);
/*** Second group, i.e. second packet. ***/
/* Create the RTP header buffer */
rtp_buffer = gst_buffer_new ();
GST_BUFFER_MALLOCDATA (rtp_buffer) = g_malloc (RTP_HEADER_SIZE);
GST_BUFFER_DATA (rtp_buffer) = GST_BUFFER_MALLOCDATA (rtp_buffer);
GST_BUFFER_SIZE (rtp_buffer) = RTP_HEADER_SIZE;
memset (GST_BUFFER_DATA (rtp_buffer), 0, RTP_HEADER_SIZE);
/* Create the buffer that holds the payload */
data_buffer = gst_buffer_new ();
GST_BUFFER_MALLOCDATA (data_buffer) = g_malloc (RTP_PAYLOAD_SIZE);
GST_BUFFER_DATA (data_buffer) = GST_BUFFER_MALLOCDATA (data_buffer);
GST_BUFFER_SIZE (data_buffer) = RTP_PAYLOAD_SIZE;
memset (GST_BUFFER_DATA (data_buffer), 0, RTP_PAYLOAD_SIZE);
/* Create a new group to hold the rtp header and the payload */
gst_buffer_list_iterator_add_group (it);
gst_buffer_list_iterator_add (it, rtp_buffer);
gst_buffer_list_iterator_add (it, data_buffer);
/* Calculate the size of the data */
*data_size = 2 * RTP_HEADER_SIZE + 2 * RTP_PAYLOAD_SIZE;
gst_buffer_list_iterator_free (it);
return list;
}
GstFlowReturn AudioFileReader::handleBuffer(GstAppSink* sink)
{
GstBuffer* buffer = gst_app_sink_pull_buffer(sink);
if (!buffer)
return GST_FLOW_ERROR;
GstCaps* caps = gst_buffer_get_caps(buffer);
GstStructure* structure = gst_caps_get_structure(caps, 0);
gint channels = 0;
if (!gst_structure_get_int(structure, "channels", &channels) || !channels) {
gst_caps_unref(caps);
gst_buffer_unref(buffer);
return GST_FLOW_ERROR;
}
gint sampleRate = 0;
if (!gst_structure_get_int(structure, "rate", &sampleRate) || !sampleRate) {
gst_caps_unref(caps);
gst_buffer_unref(buffer);
return GST_FLOW_ERROR;
}
gint width = 0;
if (!gst_structure_get_int(structure, "width", &width) || !width) {
gst_caps_unref(caps);
gst_buffer_unref(buffer);
return GST_FLOW_ERROR;
}
GstClockTime duration = (static_cast<guint64>(GST_BUFFER_SIZE(buffer)) * 8 * GST_SECOND) / (sampleRate * channels * width);
int frames = GST_CLOCK_TIME_TO_FRAMES(duration, sampleRate);
// Check the first audio channel. The buffer is supposed to store
// data of a single channel anyway.
GstAudioChannelPosition* positions = gst_audio_get_channel_positions(structure);
switch (positions[0]) {
case GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT:
gst_buffer_list_iterator_add(m_frontLeftBuffersIterator, buffer);
m_channelSize += frames;
break;
case GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT:
gst_buffer_list_iterator_add(m_frontRightBuffersIterator, buffer);
break;
default:
gst_buffer_unref(buffer);
break;
}
g_free(positions);
gst_caps_unref(caps);
return GST_FLOW_OK;
}
gboolean
gst_fragment_add_buffer (GstFragment * fragment, GstBuffer * buffer)
{
g_return_val_if_fail (fragment != NULL, FALSE);
g_return_val_if_fail (buffer != NULL, FALSE);
if (fragment->completed) {
GST_WARNING ("Fragment is completed, could not add more buffers");
return FALSE;
}
gst_buffer_list_iterator_add (fragment->priv->buffer_iterator, buffer);
fragment->priv->size = fragment->priv->size + GST_BUFFER_SIZE (buffer);
return TRUE;
}
static void
add_buffer_to_goplist (MpegPsMux * mux, GstBuffer * buf)
{
GstBufferListIterator *it;
if (mux->gop_list == NULL)
mux->gop_list = gst_buffer_list_new ();
it = gst_buffer_list_iterate (mux->gop_list);
/* move iterator to end */
while (gst_buffer_list_iterator_next_group (it)) {
/* .. */
}
gst_buffer_list_iterator_add_group (it);
gst_buffer_list_iterator_add (it, buf);
gst_buffer_list_iterator_free (it);
}
static GstFlowReturn
gst_base_rtp_audio_payload_push_buffer (GstBaseRTPAudioPayload *
baseaudiopayload, GstBuffer * buffer)
{
GstBaseRTPPayload *basepayload;
GstBaseRTPAudioPayloadPrivate *priv;
GstBuffer *outbuf;
GstClockTime timestamp;
guint8 *payload;
guint payload_len;
GstFlowReturn ret;
priv = baseaudiopayload->priv;
basepayload = GST_BASE_RTP_PAYLOAD (baseaudiopayload);
payload_len = GST_BUFFER_SIZE (buffer);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
GST_DEBUG_OBJECT (baseaudiopayload, "Pushing %d bytes ts %" GST_TIME_FORMAT,
payload_len, GST_TIME_ARGS (timestamp));
if (priv->buffer_list) {
/* create just the RTP header buffer */
outbuf = gst_rtp_buffer_new_allocate (0, 0, 0);
} else {
/* create buffer to hold the payload */
outbuf = gst_rtp_buffer_new_allocate (payload_len, 0, 0);
}
/* set metadata */
gst_base_rtp_audio_payload_set_meta (baseaudiopayload, outbuf, payload_len,
timestamp);
if (priv->buffer_list) {
GstBufferList *list;
GstBufferListIterator *it;
list = gst_buffer_list_new ();
it = gst_buffer_list_iterate (list);
/* add both buffers to the buffer list */
gst_buffer_list_iterator_add_group (it);
gst_buffer_list_iterator_add (it, outbuf);
gst_buffer_list_iterator_add (it, buffer);
gst_buffer_list_iterator_free (it);
GST_DEBUG_OBJECT (baseaudiopayload, "Pushing list %p", list);
ret = gst_basertppayload_push_list (basepayload, list);
} else {
/* copy payload */
payload = gst_rtp_buffer_get_payload (outbuf);
memcpy (payload, GST_BUFFER_DATA (buffer), payload_len);
gst_buffer_unref (buffer);
GST_DEBUG_OBJECT (baseaudiopayload, "Pushing buffer %p", outbuf);
ret = gst_basertppayload_push (basepayload, outbuf);
}
return ret;
}
void BufferListIterator::insert(const BufferPtr & buffer)
{
gst_buffer_list_iterator_add(m_it, gst_buffer_ref(buffer));
}
