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;
}
/**
* gst_rtp_buffer_list_get_payload_len:
* @list: the buffer list
*
* Get the length of the payload of the RTP packet in @list.
*
* Returns: The length of the payload in @list.
*
* Since: 0.10.24
*/
guint
gst_rtp_buffer_list_get_payload_len (GstBufferList * list)
{
guint len;
GstBufferListIterator *it;
it = gst_buffer_list_iterate (list);
len = 0;
while (gst_buffer_list_iterator_next_group (it)) {
guint i;
GstBuffer *buf;
i = 0;
while ((buf = gst_buffer_list_iterator_next (it))) {
/* skip the RTP header */
if (!i++)
continue;
/* take the size of the current buffer */
len += GST_BUFFER_SIZE (buf);
}
}
gst_buffer_list_iterator_free (it);
return len;
}
static void copyGstreamerBuffersToAudioChannel(GstBufferList* buffers, AudioChannel* audioChannel)
{
#ifdef GST_API_VERSION_1
gsize offset = 0;
for (unsigned i = 0; i < gst_buffer_list_length(buffers); i++) {
GstBuffer* buffer = gst_buffer_list_get(buffers, i);
if (!buffer)
continue;
GstMapInfo info;
gst_buffer_map(buffer, &info, GST_MAP_READ);
memcpy(audioChannel->mutableData() + offset, reinterpret_cast<float*>(info.data), info.size);
offset += info.size / sizeof(float);
gst_buffer_unmap(buffer, &info);
}
#else
GstBufferListIterator* iter = gst_buffer_list_iterate(buffers);
gst_buffer_list_iterator_next_group(iter);
GstBuffer* buffer = gst_buffer_list_iterator_merge_group(iter);
if (buffer) {
memcpy(audioChannel->mutableData(), reinterpret_cast<float*>(GST_BUFFER_DATA(buffer)), GST_BUFFER_SIZE(buffer));
gst_buffer_unref(buffer);
}
gst_buffer_list_iterator_free(iter);
#endif
}
/*
* Render function for testing udpsink with buffer lists
*/
static GstFlowReturn
udpsink_render (GstBaseSink * sink, GstBufferList * list)
{
GstBufferListIterator *it;
fail_if (!list);
/*
* Count the size of the rtp header and the payload in the buffer list.
*/
it = gst_buffer_list_iterate (list);
/* Loop through all groups */
while (gst_buffer_list_iterator_next_group (it)) {
GstBuffer *buf;
/* Loop through all buffers in the current group */
while ((buf = gst_buffer_list_iterator_next (it))) {
guint size;
size = GST_BUFFER_SIZE (buf);
GST_DEBUG ("rendered %u bytes", size);
render_list_bytes_received += size;
}
}
gst_buffer_list_iterator_free (it);
return GST_FLOW_OK;
}
/*
* Chain list function for testing buffer lists
*/
static GstFlowReturn
rtp_pipeline_chain_list (GstPad * pad, GstBufferList * list)
{
GstBufferListIterator *it;
fail_if (!list);
it = gst_buffer_list_iterate (list);
/*
* Count the size of the payload in the buffer list.
*/
/* Loop through all groups */
while (gst_buffer_list_iterator_next_group (it)) {
GstBuffer *paybuf;
/* Skip the first buffer in the group, its the RTP header */
fail_if (!gst_buffer_list_iterator_next (it));
/* Loop through all payload buffers in the current group */
while ((paybuf = gst_buffer_list_iterator_next (it))) {
chain_list_bytes_received += GST_BUFFER_SIZE (paybuf);
}
}
gst_buffer_list_iterator_free (it);
gst_buffer_list_unref (list);
return GST_FLOW_OK;
}
PassOwnPtr<AudioBus> AudioFileReader::createBus(float sampleRate, bool mixToMono)
{
m_sampleRate = sampleRate;
m_frontLeftBuffers = gst_buffer_list_new();
m_frontRightBuffers = gst_buffer_list_new();
#ifndef GST_API_VERSION_1
m_frontLeftBuffersIterator = gst_buffer_list_iterate(m_frontLeftBuffers);
gst_buffer_list_iterator_add_group(m_frontLeftBuffersIterator);
m_frontRightBuffersIterator = gst_buffer_list_iterate(m_frontRightBuffers);
gst_buffer_list_iterator_add_group(m_frontRightBuffersIterator);
#endif
GRefPtr<GMainContext> context = adoptGRef(g_main_context_new());
g_main_context_push_thread_default(context.get());
m_loop = adoptGRef(g_main_loop_new(context.get(), FALSE));
// Start the pipeline processing just after the loop is started.
GRefPtr<GSource> timeoutSource = adoptGRef(g_timeout_source_new(0));
g_source_attach(timeoutSource.get(), context.get());
g_source_set_callback(timeoutSource.get(), reinterpret_cast<GSourceFunc>(enteredMainLoopCallback), this, 0);
g_main_loop_run(m_loop.get());
g_main_context_pop_thread_default(context.get());
if (m_errorOccurred)
return nullptr;
unsigned channels = mixToMono ? 1 : 2;
OwnPtr<AudioBus> audioBus = adoptPtr(new AudioBus(channels, m_channelSize, true));
audioBus->setSampleRate(m_sampleRate);
copyGstreamerBuffersToAudioChannel(m_frontLeftBuffers, audioBus->channel(0));
if (!mixToMono)
copyGstreamerBuffersToAudioChannel(m_frontRightBuffers, audioBus->channel(1));
return audioBus.release();
}
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 void
gst_fragment_init (GstFragment * fragment)
{
GstFragmentPrivate *priv;
fragment->priv = priv = GST_FRAGMENT_GET_PRIVATE (fragment);
g_mutex_init (&fragment->priv->lock);
priv->buffer_list = gst_buffer_list_new ();
priv->size = 0;
priv->buffer_iterator = gst_buffer_list_iterate (priv->buffer_list);
gst_buffer_list_iterator_add_group (priv->buffer_iterator);
fragment->download_start_time = g_get_real_time ();
fragment->start_time = 0;
fragment->stop_time = 0;
fragment->index = 0;
fragment->name = g_strdup ("");
fragment->completed = FALSE;
fragment->discontinuous = FALSE;
}
static GstFlowReturn
gst_rtp_j2k_depay_flush_frame (GstBaseRTPDepayload * depayload)
{
GstRtpJ2KDepay *rtpj2kdepay;
guint8 end[2];
guint8 *data;
guint avail;
GstFlowReturn ret = GST_FLOW_OK;
rtpj2kdepay = GST_RTP_J2K_DEPAY (depayload);
/* flush pending tile */
gst_rtp_j2k_depay_flush_tile (depayload);
/* last buffer take all data out of the adapter */
avail = gst_adapter_available (rtpj2kdepay->f_adapter);
if (avail == 0)
goto done;
if (avail > 2) {
GstBuffer *outbuf;
/* take the last bytes of the JPEG 2000 data to see if there is an EOC
* marker */
gst_adapter_copy (rtpj2kdepay->f_adapter, end, avail - 2, 2);
if (end[0] != 0xff && end[1] != 0xd9) {
GST_DEBUG_OBJECT (rtpj2kdepay, "no EOC marker, adding one");
/* no EOI marker, add one */
outbuf = gst_buffer_new_and_alloc (2);
data = GST_BUFFER_DATA (outbuf);
data[0] = 0xff;
data[1] = 0xd9;
gst_adapter_push (rtpj2kdepay->f_adapter, outbuf);
avail += 2;
}
if (rtpj2kdepay->buffer_list) {
GList *list;
GstBufferList *buflist;
GstBufferListIterator *it;
GST_DEBUG_OBJECT (rtpj2kdepay, "pushing buffer list of %u bytes", avail);
list = gst_adapter_take_list (rtpj2kdepay->f_adapter, avail);
buflist = gst_buffer_list_new ();
it = gst_buffer_list_iterate (buflist);
gst_buffer_list_iterator_add_group (it);
gst_buffer_list_iterator_add_list (it, list);
gst_buffer_list_iterator_free (it);
ret = gst_base_rtp_depayload_push_list (depayload, buflist);
} else {
GST_DEBUG_OBJECT (rtpj2kdepay, "pushing buffer of %u bytes", avail);
outbuf = gst_adapter_take_buffer (rtpj2kdepay->f_adapter, avail);
ret = gst_base_rtp_depayload_push (depayload, outbuf);
}
} else {
GST_WARNING_OBJECT (rtpj2kdepay, "empty packet");
gst_adapter_clear (rtpj2kdepay->f_adapter);
}
/* we accept any mh_id now */
rtpj2kdepay->last_mh_id = -1;
/* reset state */
rtpj2kdepay->next_frag = 0;
rtpj2kdepay->have_sync = FALSE;
done:
/* we can't keep headers with mh_id of 0 */
store_mheader (rtpj2kdepay, 0, NULL);
return ret;
}
/**
* gst_rtp_buffer_list_validate:
* @list: the buffer list to validate
*
* Check if all RTP packets in the @list are valid using validate_data().
* Use this function to validate an list before using the other functions in
* this module.
*
* Returns: TRUE if @list consists only of valid RTP packets.
*
* Since: 0.10.24
*/
gboolean
gst_rtp_buffer_list_validate (GstBufferList * list)
{
guint16 prev_seqnum = 0;
GstBufferListIterator *it;
guint i = 0;
g_return_val_if_fail (GST_IS_BUFFER_LIST (list), FALSE);
it = gst_buffer_list_iterate (list);
g_return_val_if_fail (it != NULL, FALSE);
/* iterate through all the RTP packets in the list */
while (gst_buffer_list_iterator_next_group (it)) {
GstBuffer *rtpbuf;
GstBuffer *paybuf;
guint8 *packet_header;
guint8 *packet_payload;
guint payload_size;
guint packet_size;
/* each group should consists of 2 buffers: one containing the RTP header
* and the other one the payload, FIXME, relax the requirement of only one
* payload buffer. */
if (gst_buffer_list_iterator_n_buffers (it) != 2)
goto invalid_list;
/* get the RTP header */
rtpbuf = gst_buffer_list_iterator_next (it);
packet_header = GST_BUFFER_DATA (rtpbuf);
if (packet_header == NULL)
goto invalid_list;
/* get the payload */
paybuf = gst_buffer_list_iterator_next (it);
packet_payload = GST_BUFFER_DATA (paybuf);
if (packet_payload == NULL) {
goto invalid_list;
}
payload_size = GST_BUFFER_SIZE (paybuf);
if (payload_size == 0) {
goto invalid_list;
}
/* the size of the RTP packet within the current group */
packet_size = GST_BUFFER_SIZE (rtpbuf) + payload_size;
/* check the sequence number */
if (G_UNLIKELY (i == 0)) {
prev_seqnum = g_ntohs (GST_RTP_HEADER_SEQ (packet_header));
i++;
} else {
if (++prev_seqnum != g_ntohs (GST_RTP_HEADER_SEQ (packet_header)))
goto invalid_list;
}
/* validate packet */
if (!validate_data (packet_header, packet_size, packet_payload,
payload_size)) {
goto invalid_list;
}
}
gst_buffer_list_iterator_free (it);
return TRUE;
/* ERRORS */
invalid_list:
{
gst_buffer_list_iterator_free (it);
return FALSE;
}
}
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;
}
BufferListIterator::BufferListIterator(const BufferListPtr & list)
{
m_it = gst_buffer_list_iterate(list);
}
static GstFlowReturn
gst_multiudpsink_render_list (GstBaseSink * bsink, GstBufferList * list)
{
GstMultiUDPSink *sink;
GList *clients;
gint ret, size = 0, num = 0, no_clients = 0;
struct iovec *iov;
struct msghdr msg = { 0 };
GstBufferListIterator *it;
guint gsize;
GstBuffer *buf;
sink = GST_MULTIUDPSINK (bsink);
g_return_val_if_fail (list != NULL, GST_FLOW_ERROR);
it = gst_buffer_list_iterate (list);
g_return_val_if_fail (it != NULL, GST_FLOW_ERROR);
while (gst_buffer_list_iterator_next_group (it)) {
msg.msg_iovlen = 0;
size = 0;
if ((gsize = gst_buffer_list_iterator_n_buffers (it)) == 0) {
goto invalid_list;
}
iov = (struct iovec *) g_malloc (gsize * sizeof (struct iovec));
msg.msg_iov = iov;
while ((buf = gst_buffer_list_iterator_next (it))) {
if (GST_BUFFER_SIZE (buf) > UDP_MAX_SIZE) {
GST_WARNING ("Attempting to send a UDP packet larger than maximum "
"size (%d > %d)", GST_BUFFER_SIZE (buf), UDP_MAX_SIZE);
}
msg.msg_iov[msg.msg_iovlen].iov_len = GST_BUFFER_SIZE (buf);
msg.msg_iov[msg.msg_iovlen].iov_base = GST_BUFFER_DATA (buf);
msg.msg_iovlen++;
size += GST_BUFFER_SIZE (buf);
}
sink->bytes_to_serve += size;
/* grab lock while iterating and sending to clients, this should be
* fast as UDP never blocks */
g_mutex_lock (sink->client_lock);
GST_LOG_OBJECT (bsink, "about to send %d bytes", size);
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
GstUDPClient *client;
gint count;
client = (GstUDPClient *) clients->data;
no_clients++;
GST_LOG_OBJECT (sink, "sending %d bytes to client %p", size, client);
count = sink->send_duplicates ? client->refcount : 1;
while (count--) {
while (TRUE) {
msg.msg_name = (void *) &client->theiraddr;
msg.msg_namelen = sizeof (client->theiraddr);
ret = sendmsg (*client->sock, &msg, 0);
if (ret < 0) {
if (!socket_error_is_ignorable ()) {
break;
}
} else {
num++;
client->bytes_sent += ret;
client->packets_sent++;
sink->bytes_served += ret;
break;
}
}
}
}
g_mutex_unlock (sink->client_lock);
g_free (iov);
msg.msg_iov = NULL;
GST_LOG_OBJECT (sink, "sent %d bytes to %d (of %d) clients", size, num,
no_clients);
}
gst_buffer_list_iterator_free (it);
return GST_FLOW_OK;
invalid_list:
gst_buffer_list_iterator_free (it);
return GST_FLOW_ERROR;
}