mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-07 15:15:53 +00:00
rtp: cleanups
Add Since tags to docs Move some code around Add win32 symbols
This commit is contained in:
Wim Taymans
parent
66c388a0e0
commit
e2ccc1ee39
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@ -92,14 +92,6 @@ typedef enum
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NO_MORE
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} rtp_header_data_type;
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static gboolean validate_data (guint8 * data, guint len, guint8 * payload,
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guint payload_len);
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static guint8 *gst_rtp_buffer_list_get_data (GstBufferList * list);
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static void gst_rtp_buffer_list_set_rtp_headers (GstBufferList * list,
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gpointer data, rtp_header_data_type type);
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static void gst_rtp_buffer_list_set_data (guint8 * rtp_header, gpointer data,
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rtp_header_data_type type);
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/**
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* gst_rtp_buffer_allocate_data:
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* @buffer: a #GstBuffer
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@ -301,129 +293,6 @@ gst_rtp_buffer_calc_payload_len (guint packet_len, guint8 pad_len,
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- pad_len;
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}
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/**
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* gst_rtp_buffer_validate_data:
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* @data: the data to validate
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* @len: the length of @data to validate
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*
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* Check if the @data and @size point to the data of a valid RTP packet.
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* This function checks the length, version and padding of the packet data.
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* Use this function to validate a packet before using the other functions in
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* this module.
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*
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* Returns: TRUE if the data points to a valid RTP packet.
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*/
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gboolean
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gst_rtp_buffer_validate_data (guint8 * data, guint len)
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{
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return validate_data (data, len, NULL, 0);
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}
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/**
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* gst_rtp_buffer_validate:
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* @buffer: the buffer to validate
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*
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* Check if the data pointed to by @buffer is a valid RTP packet using
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* validate_data().
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* Use this function to validate a packet before using the other functions in
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* this module.
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*
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* Returns: TRUE if @buffer is a valid RTP packet.
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*/
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gboolean
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gst_rtp_buffer_validate (GstBuffer * buffer)
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{
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guint8 *data;
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guint len;
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g_return_val_if_fail (GST_IS_BUFFER (buffer), FALSE);
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data = GST_BUFFER_DATA (buffer);
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len = GST_BUFFER_SIZE (buffer);
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return validate_data (data, len, NULL, 0);
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}
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/**
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* gst_rtp_buffer_list_validate:
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* @list: the buffer list to validate
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*
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* Check if all RTP packets in the @list are valid using validate_data().
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* Use this function to validate an list before using the other functions in
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* this module.
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*
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* Returns: TRUE if @list consists only of valid RTP packets.
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*/
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gboolean
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gst_rtp_buffer_list_validate (GstBufferList * list)
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{
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guint16 prev_seqnum = 0;
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GstBufferListIterator *it;
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guint i = 0;
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g_return_val_if_fail (GST_IS_BUFFER_LIST (list), FALSE);
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it = gst_buffer_list_iterate (list);
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g_return_val_if_fail (it != NULL, FALSE);
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/* iterate through all the RTP packets in the list */
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while (gst_buffer_list_iterator_next_group (it)) {
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GstBuffer *rtpbuf;
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GstBuffer *paybuf;
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guint8 *packet_header;
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guint8 *packet_payload;
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guint payload_size;
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guint packet_size;
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/* each group should consists of 2 buffers: one containing the RTP header
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* and the other one the payload */
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if (gst_buffer_list_iterator_n_buffers (it) != 2)
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goto invalid_list;
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/* get the RTP header */
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rtpbuf = gst_buffer_list_iterator_next (it);
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packet_header = GST_BUFFER_DATA (rtpbuf);
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if (packet_header == NULL)
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goto invalid_list;
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/* get the payload */
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paybuf = gst_buffer_list_iterator_next (it);
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packet_payload = GST_BUFFER_DATA (paybuf);
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if (packet_payload == NULL) {
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goto invalid_list;
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}
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payload_size = GST_BUFFER_SIZE (paybuf);
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if (payload_size == 0) {
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goto invalid_list;
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}
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/* the size of the RTP packet within the current group */
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packet_size = GST_BUFFER_SIZE (rtpbuf) + payload_size;
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/* check the sequence number */
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if (G_UNLIKELY (i == 0)) {
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prev_seqnum = g_ntohs (GST_RTP_HEADER_SEQ (packet_header));
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i++;
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} else {
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if (++prev_seqnum != g_ntohs (GST_RTP_HEADER_SEQ (packet_header)))
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goto invalid_list;
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}
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/* validate packet */
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if (!validate_data (packet_header, packet_size, packet_payload,
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payload_size)) {
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goto invalid_list;
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}
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}
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gst_buffer_list_iterator_free (it);
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return TRUE;
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invalid_list:
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gst_buffer_list_iterator_free (it);
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g_return_val_if_reached (FALSE);
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}
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/**
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* validate_data:
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* @data: the data to validate
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@ -513,6 +382,136 @@ wrong_padding:
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}
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}
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/**
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* gst_rtp_buffer_validate_data:
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* @data: the data to validate
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* @len: the length of @data to validate
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*
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* Check if the @data and @size point to the data of a valid RTP packet.
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* This function checks the length, version and padding of the packet data.
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* Use this function to validate a packet before using the other functions in
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* this module.
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*
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* Returns: TRUE if the data points to a valid RTP packet.
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*/
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gboolean
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gst_rtp_buffer_validate_data (guint8 * data, guint len)
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{
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return validate_data (data, len, NULL, 0);
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}
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/**
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* gst_rtp_buffer_validate:
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* @buffer: the buffer to validate
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*
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* Check if the data pointed to by @buffer is a valid RTP packet using
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* validate_data().
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* Use this function to validate a packet before using the other functions in
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* this module.
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*
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* Returns: TRUE if @buffer is a valid RTP packet.
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*/
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gboolean
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gst_rtp_buffer_validate (GstBuffer * buffer)
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{
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guint8 *data;
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guint len;
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g_return_val_if_fail (GST_IS_BUFFER (buffer), FALSE);
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data = GST_BUFFER_DATA (buffer);
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len = GST_BUFFER_SIZE (buffer);
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return validate_data (data, len, NULL, 0);
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}
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/**
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* gst_rtp_buffer_list_validate:
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* @list: the buffer list to validate
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*
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* Check if all RTP packets in the @list are valid using validate_data().
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* Use this function to validate an list before using the other functions in
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* this module.
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*
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* Returns: TRUE if @list consists only of valid RTP packets.
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*
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* Since: 0.10.24
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*/
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gboolean
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gst_rtp_buffer_list_validate (GstBufferList * list)
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{
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guint16 prev_seqnum = 0;
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GstBufferListIterator *it;
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guint i = 0;
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g_return_val_if_fail (GST_IS_BUFFER_LIST (list), FALSE);
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it = gst_buffer_list_iterate (list);
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g_return_val_if_fail (it != NULL, FALSE);
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/* iterate through all the RTP packets in the list */
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while (gst_buffer_list_iterator_next_group (it)) {
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GstBuffer *rtpbuf;
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GstBuffer *paybuf;
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guint8 *packet_header;
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guint8 *packet_payload;
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guint payload_size;
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guint packet_size;
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/* each group should consists of 2 buffers: one containing the RTP header
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* and the other one the payload, FIXME, relax the requirement of only one
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* payload buffer. */
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if (gst_buffer_list_iterator_n_buffers (it) != 2)
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goto invalid_list;
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/* get the RTP header */
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rtpbuf = gst_buffer_list_iterator_next (it);
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packet_header = GST_BUFFER_DATA (rtpbuf);
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if (packet_header == NULL)
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goto invalid_list;
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/* get the payload */
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paybuf = gst_buffer_list_iterator_next (it);
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packet_payload = GST_BUFFER_DATA (paybuf);
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if (packet_payload == NULL) {
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goto invalid_list;
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}
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payload_size = GST_BUFFER_SIZE (paybuf);
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if (payload_size == 0) {
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goto invalid_list;
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}
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/* the size of the RTP packet within the current group */
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packet_size = GST_BUFFER_SIZE (rtpbuf) + payload_size;
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/* check the sequence number */
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if (G_UNLIKELY (i == 0)) {
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prev_seqnum = g_ntohs (GST_RTP_HEADER_SEQ (packet_header));
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i++;
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} else {
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if (++prev_seqnum != g_ntohs (GST_RTP_HEADER_SEQ (packet_header)))
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goto invalid_list;
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}
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/* validate packet */
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if (!validate_data (packet_header, packet_size, packet_payload,
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payload_size)) {
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goto invalid_list;
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}
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}
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gst_buffer_list_iterator_free (it);
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return TRUE;
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/* ERRORS */
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invalid_list:
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{
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gst_buffer_list_iterator_free (it);
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return FALSE;
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}
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}
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/**
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* gst_rtp_buffer_set_packet_len:
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* @buffer: the buffer
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@ -795,6 +794,32 @@ gst_rtp_buffer_get_ssrc (GstBuffer * buffer)
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return g_ntohl (GST_RTP_HEADER_SSRC (GST_BUFFER_DATA (buffer)));
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}
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/* Returns ponter to the RTP header of the first packet within the list */
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static guint8 *
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gst_rtp_buffer_list_get_data (GstBufferList * list)
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{
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GstBufferListIterator *it;
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GstBuffer *rtpbuf;
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it = gst_buffer_list_iterate (list);
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if (!gst_buffer_list_iterator_next_group (it))
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goto invalid_list;
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rtpbuf = gst_buffer_list_iterator_next (it);
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if (!rtpbuf)
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goto invalid_list;
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gst_buffer_list_iterator_free (it);
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return GST_BUFFER_DATA (rtpbuf);
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invalid_list:
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{
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gst_buffer_list_iterator_free (it);
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return NULL;
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}
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}
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/**
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* gst_rtp_buffer_list_get_ssrc:
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* @list: the list
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@ -803,13 +828,17 @@ gst_rtp_buffer_get_ssrc (GstBuffer * buffer)
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* All RTP packets within @list have the same SSRC.
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*
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* Returns: the SSRC of @list in host order.
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*
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* Since: 0.10.24
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*/
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guint32
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gst_rtp_buffer_list_get_ssrc (GstBufferList * list)
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{
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guint8 *data;
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data = gst_rtp_buffer_list_get_data (list);
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g_return_val_if_fail (data != NULL, 0);
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return g_ntohl (GST_RTP_HEADER_SSRC (data));
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}
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@ -826,12 +855,63 @@ gst_rtp_buffer_set_ssrc (GstBuffer * buffer, guint32 ssrc)
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GST_RTP_HEADER_SSRC (GST_BUFFER_DATA (buffer)) = g_htonl (ssrc);
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}
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/* Sets the field specified by @type to @data.
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* When setting SEQ number, this function will also increase
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* @data by one. */
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static void
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gst_rtp_buffer_list_set_data (guint8 * rtp_header,
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gpointer data, rtp_header_data_type type)
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{
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switch (type) {
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case PAYLOAD_TYPE:
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GST_RTP_HEADER_PAYLOAD_TYPE (rtp_header) = *(guint8 *) data;
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break;
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case SEQ:
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GST_RTP_HEADER_SEQ (rtp_header) = g_htons (*(guint16 *) data);
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(*(guint16 *) data)++;
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break;
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case SSRC:
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GST_RTP_HEADER_SSRC (rtp_header) = g_htonl (*(guint32 *) data);
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break;
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case TIMESTAMP:
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GST_RTP_HEADER_TIMESTAMP (rtp_header) = g_htonl (*(guint32 *) data);
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break;
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default:
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g_warning ("Unknown data type");
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break;
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}
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}
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/* Sets the field specified by @type to @data.
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* This function updates all RTP headers within @list. */
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static void
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gst_rtp_buffer_list_set_rtp_headers (GstBufferList * list,
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gpointer data, rtp_header_data_type type)
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{
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GstBufferListIterator *it;
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it = gst_buffer_list_iterate (list);
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while (gst_buffer_list_iterator_next_group (it)) {
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GstBuffer *rtpbuf;
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guint8 *rtp_header;
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rtpbuf = gst_buffer_list_iterator_next (it);
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rtp_header = GST_BUFFER_DATA (rtpbuf);
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gst_rtp_buffer_list_set_data (rtp_header, data, type);
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}
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gst_buffer_list_iterator_free (it);
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}
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/**
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* gst_rtp_buffer_list_set_ssrc:
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* @list: the buffer list
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* @ssrc: the new SSRC
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*
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* Set the SSRC on each RTP packet in @list to @ssrc.
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*
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* Since: 0.10.24
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*/
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void
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gst_rtp_buffer_list_set_ssrc (GstBufferList * list, guint32 ssrc)
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@ -943,13 +1023,17 @@ gst_rtp_buffer_get_payload_type (GstBuffer * buffer)
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* All packets in @list should have the same payload type.
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*
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* Returns: The payload type.
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*
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* Since: 0.10.24
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*/
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guint8
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gst_rtp_buffer_list_get_payload_type (GstBufferList * list)
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{
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guint8 *data;
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data = gst_rtp_buffer_list_get_data (list);
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g_return_val_if_fail (data != NULL, 0);
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return GST_RTP_HEADER_PAYLOAD_TYPE (data);
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}
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@ -974,6 +1058,8 @@ gst_rtp_buffer_set_payload_type (GstBuffer * buffer, guint8 payload_type)
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* @payload_type: the new type
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*
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* Set the payload type of each RTP packet in @list to @payload_type.
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*
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* Since: 0.10.24
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*/
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void
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gst_rtp_buffer_list_set_payload_type (GstBufferList * list, guint8 payload_type)
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@ -1018,11 +1104,14 @@ gst_rtp_buffer_set_seq (GstBuffer * buffer, guint16 seq)
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* Set the sequence number of each RTP packet in @list to @seq.
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*
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* Returns: The seq number of the last packet in the list + 1.
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*
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* Since: 0.10.24
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*/
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guint16
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gst_rtp_buffer_list_set_seq (GstBufferList * list, guint16 seq)
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{
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gst_rtp_buffer_list_set_rtp_headers (list, &seq, SEQ);
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return seq;
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}
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@ -1048,13 +1137,17 @@ gst_rtp_buffer_get_timestamp (GstBuffer * buffer)
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* All packets within @list have the same timestamp.
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*
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* Returns: The timestamp in host order.
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*
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* Since: 0.10.24
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*/
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guint32
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gst_rtp_buffer_list_get_timestamp (GstBufferList * list)
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{
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guint8 *data;
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data = gst_rtp_buffer_list_get_data (list);
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g_return_val_if_fail (data != NULL, 0);
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return g_ntohl (GST_RTP_HEADER_TIMESTAMP (data));
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}
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@ -1077,6 +1170,8 @@ gst_rtp_buffer_set_timestamp (GstBuffer * buffer, guint32 timestamp)
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* @timestamp: the new timestamp
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*
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* Set the timestamp of each RTP packet in @list to @timestamp.
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*
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* Since: 0.10.24
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*/
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void
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gst_rtp_buffer_list_set_timestamp (GstBufferList * list, guint32 timestamp)
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@ -1175,13 +1270,17 @@ gst_rtp_buffer_get_payload_len (GstBuffer * buffer)
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* Get the length of the payload of the RTP packet in @list.
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*
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* Returns: The length of the payload in @list.
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*
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* Since: 0.10.24
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*/
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guint
|
||||
gst_rtp_buffer_list_get_payload_len (GstBufferList * list)
|
||||
{
|
||||
guint len = 0;
|
||||
guint len;
|
||||
GstBufferListIterator *it;
|
||||
|
||||
it = gst_buffer_list_iterate (list);
|
||||
len = 0;
|
||||
|
||||
while (gst_buffer_list_iterator_next_group (it)) {
|
||||
guint i;
|
||||
|
|
@ -1311,93 +1410,3 @@ gst_rtp_buffer_ext_timestamp (guint64 * exttimestamp, guint32 timestamp)
|
|||
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_rtp_buffer_list_get_data:
|
||||
* @list: a buffer list
|
||||
*
|
||||
* Returns ponter to the RTP header of the first packet within the list
|
||||
*
|
||||
* Returns: pointer to the first RTP header
|
||||
*/
|
||||
static guint8 *
|
||||
gst_rtp_buffer_list_get_data (GstBufferList * list)
|
||||
{
|
||||
GstBufferListIterator *it;
|
||||
GstBuffer *rtpbuf;
|
||||
|
||||
it = gst_buffer_list_iterate (list);
|
||||
if (!gst_buffer_list_iterator_next_group (it))
|
||||
goto invalid_list;
|
||||
rtpbuf = gst_buffer_list_iterator_next (it);
|
||||
if (!rtpbuf)
|
||||
goto invalid_list;
|
||||
|
||||
gst_buffer_list_iterator_free (it);
|
||||
return GST_BUFFER_DATA (rtpbuf);
|
||||
|
||||
invalid_list:
|
||||
gst_buffer_list_iterator_free (it);
|
||||
g_return_val_if_reached (FALSE);
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_rtp_buffer_list_set_rtp_headers:
|
||||
* @list: a buffer list
|
||||
* @data: data to be set
|
||||
* @type: which field in the header to be set
|
||||
*
|
||||
* Sets the field specified by @type to @data.
|
||||
* This function updates all RTP headers within @list.
|
||||
*/
|
||||
static void
|
||||
gst_rtp_buffer_list_set_rtp_headers (GstBufferList * list,
|
||||
gpointer data, rtp_header_data_type type)
|
||||
{
|
||||
GstBufferListIterator *it;
|
||||
it = gst_buffer_list_iterate (list);
|
||||
|
||||
while (gst_buffer_list_iterator_next_group (it)) {
|
||||
GstBuffer *rtpbuf;
|
||||
guint8 *rtp_header;
|
||||
rtpbuf = gst_buffer_list_iterator_next (it);
|
||||
rtp_header = GST_BUFFER_DATA (rtpbuf);
|
||||
gst_rtp_buffer_list_set_data (rtp_header, data, type);
|
||||
}
|
||||
|
||||
gst_buffer_list_iterator_free (it);
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_rtp_buffer_list_set_data:
|
||||
* @rtp_header: rtp header to be updated
|
||||
* @data: data to be set
|
||||
* @type: which field in the header to be set
|
||||
*
|
||||
* Sets the field specified by @type to @data.
|
||||
* When setting SEQ number, this function will also increase
|
||||
* @data by one.
|
||||
*/
|
||||
static void
|
||||
gst_rtp_buffer_list_set_data (guint8 * rtp_header,
|
||||
gpointer data, rtp_header_data_type type)
|
||||
{
|
||||
switch (type) {
|
||||
case PAYLOAD_TYPE:
|
||||
GST_RTP_HEADER_PAYLOAD_TYPE (rtp_header) = *(guint8 *) data;
|
||||
break;
|
||||
case SEQ:
|
||||
GST_RTP_HEADER_SEQ (rtp_header) = g_htons (*(guint16 *) data);
|
||||
(*(guint16 *) data)++;
|
||||
break;
|
||||
case SSRC:
|
||||
GST_RTP_HEADER_SSRC (rtp_header) = g_htonl (*(guint32 *) data);
|
||||
break;
|
||||
case TIMESTAMP:
|
||||
GST_RTP_HEADER_TIMESTAMP (rtp_header) = g_htonl (*(guint32 *) data);
|
||||
break;
|
||||
default:
|
||||
g_warning ("Unknown data type");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -87,6 +87,15 @@ EXPORTS
|
|||
gst_rtp_buffer_get_ssrc
|
||||
gst_rtp_buffer_get_timestamp
|
||||
gst_rtp_buffer_get_version
|
||||
gst_rtp_buffer_list_get_payload_len
|
||||
gst_rtp_buffer_list_get_payload_type
|
||||
gst_rtp_buffer_list_get_ssrc
|
||||
gst_rtp_buffer_list_get_timestamp
|
||||
gst_rtp_buffer_list_set_payload_type
|
||||
gst_rtp_buffer_list_set_seq
|
||||
gst_rtp_buffer_list_set_ssrc
|
||||
gst_rtp_buffer_list_set_timestamp
|
||||
gst_rtp_buffer_list_validate
|
||||
gst_rtp_buffer_new_allocate
|
||||
gst_rtp_buffer_new_allocate_len
|
||||
gst_rtp_buffer_new_copy_data
|
||||
|
|
|
|||
Loading…
Reference in a new issue