/**
* gst_rtp_buffer_pad_to:
* @buffer: the buffer
* @len: the new amount of padding
*
* Set the amount of padding in the RTP packet in @buffer to
* @len. If @len is 0, the padding is removed.
*
* NOTE: This function does not work correctly.
*/
void
gst_rtp_buffer_pad_to (GstBuffer * buffer, guint len)
{
guint8 *data;
data = GST_BUFFER_DATA (buffer);
if (len > 0)
GST_RTP_HEADER_PADDING (data) = TRUE;
else
GST_RTP_HEADER_PADDING (data) = FALSE;
/* FIXME, set the padding byte at the end of the payload data */
}
/**
* gst_rtp_buffer_allocate_data:
* @buffer: a #GstBuffer
* @payload_len: the length of the payload
* @pad_len: the amount of padding
* @csrc_count: the number of CSRC entries
*
* Allocate enough data in @buffer to hold an RTP packet with @csrc_count CSRCs,
* a payload length of @payload_len and padding of @pad_len.
* MALLOCDATA of @buffer will be overwritten and will not be freed.
* All other RTP header fields will be set to 0/FALSE.
*/
void
gst_rtp_buffer_allocate_data (GstBuffer * buffer, guint payload_len,
guint8 pad_len, guint8 csrc_count)
{
guint len;
guint8 *data;
g_return_if_fail (csrc_count <= 15);
g_return_if_fail (GST_IS_BUFFER (buffer));
len = GST_RTP_HEADER_LEN + csrc_count * sizeof (guint32)
+ payload_len + pad_len;
data = g_malloc (len);
GST_BUFFER_MALLOCDATA (buffer) = data;
GST_BUFFER_DATA (buffer) = data;
GST_BUFFER_SIZE (buffer) = len;
/* fill in defaults */
GST_RTP_HEADER_VERSION (data) = GST_RTP_VERSION;
GST_RTP_HEADER_PADDING (data) = FALSE;
GST_RTP_HEADER_EXTENSION (data) = FALSE;
GST_RTP_HEADER_CSRC_COUNT (data) = csrc_count;
memset (GST_RTP_HEADER_CSRC_LIST_OFFSET (data, 0), 0,
csrc_count * sizeof (guint32));
GST_RTP_HEADER_MARKER (data) = FALSE;
GST_RTP_HEADER_PAYLOAD_TYPE (data) = 0;
GST_RTP_HEADER_SEQ (data) = 0;
GST_RTP_HEADER_TIMESTAMP (data) = 0;
GST_RTP_HEADER_SSRC (data) = 0;
}
EXPORT_C
#endif
void
gst_rtp_buffer_pad_to (GstBuffer * buffer, guint len)
{
g_return_if_fail (GST_IS_BUFFER (buffer));
g_return_if_fail (GST_BUFFER_DATA (buffer) != NULL);
if (len > 0)
GST_RTP_HEADER_PADDING (buffer) = TRUE;
else
GST_RTP_HEADER_PADDING (buffer) = FALSE;
/* FIXME, set the padding byte at the end of the payload data */
}
EXPORT_C
#endif
void
gst_rtp_buffer_set_padding (GstBuffer * buffer, gboolean padding)
{
GST_RTP_HEADER_PADDING (GST_BUFFER_DATA (buffer)) = padding;
}
EXPORT_C
#endif
gboolean
gst_rtp_buffer_get_padding (GstBuffer * buffer)
{
return GST_RTP_HEADER_PADDING (GST_BUFFER_DATA (buffer));
}
EXPORT_C
#endif
void
gst_rtp_buffer_set_padding (GstBuffer * buffer, gboolean padding)
{
g_return_if_fail (GST_IS_BUFFER (buffer));
g_return_if_fail (GST_BUFFER_DATA (buffer) != NULL);
GST_RTP_HEADER_PADDING (buffer) = padding;
}
EXPORT_C
#endif
gboolean
gst_rtp_buffer_get_padding (GstBuffer * buffer)
{
g_return_val_if_fail (GST_IS_BUFFER (buffer), FALSE);
g_return_val_if_fail (GST_BUFFER_DATA (buffer) != NULL, FALSE);
return GST_RTP_HEADER_PADDING (buffer);
}
/**
* gst_rtp_buffer_get_payload_len:
* @buffer: the buffer
*
* Get the length of the payload of the RTP packet in @buffer.
*
* Returns: The length of the payload in @buffer.
*/
guint
gst_rtp_buffer_get_payload_len (GstBuffer * buffer)
{
guint len, size;
guint8 *data;
size = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
len = size - gst_rtp_buffer_get_header_len (buffer);
if (GST_RTP_HEADER_PADDING (data))
len -= data[size - 1];
return len;
}
/**
* gst_rtp_buffer_set_packet_len:
* @buffer: the buffer
* @len: the new packet length
*
* Set the total @buffer size to @len. The data in the buffer will be made
* larger if needed. Any padding will be removed from the packet.
*/
void
gst_rtp_buffer_set_packet_len (GstBuffer * buffer, guint len)
{
guint oldlen;
guint8 *data;
oldlen = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
if (oldlen < len) {
data = g_realloc (GST_BUFFER_MALLOCDATA (buffer), len);
GST_BUFFER_MALLOCDATA (buffer) = data;
GST_BUFFER_DATA (buffer) = data;
}
GST_BUFFER_SIZE (buffer) = len;
/* remove any padding */
GST_RTP_HEADER_PADDING (data) = FALSE;
}
EXPORT_C
#endif
guint
gst_rtp_buffer_get_payload_len (GstBuffer * buffer)
{
guint len, size;
g_return_val_if_fail (GST_IS_BUFFER (buffer), 0);
g_return_val_if_fail (GST_BUFFER_DATA (buffer) != NULL, 0);
size = GST_BUFFER_SIZE (buffer);
len = size - gst_rtp_buffer_get_header_len (buffer);
if (GST_RTP_HEADER_PADDING (buffer))
len -= GST_BUFFER_DATA (buffer)[size - 1];
return len;
}
EXPORT_C
#endif
void
gst_rtp_buffer_set_packet_len (GstBuffer * buffer, guint len)
{
guint oldlen;
g_return_if_fail (GST_IS_BUFFER (buffer));
oldlen = GST_BUFFER_SIZE (buffer);
if (oldlen < len) {
guint8 *newdata;
newdata = g_realloc (GST_BUFFER_MALLOCDATA (buffer), len);
GST_BUFFER_MALLOCDATA (buffer) = newdata;
GST_BUFFER_DATA (buffer) = newdata;
}
GST_BUFFER_SIZE (buffer) = len;
/* remove any padding */
GST_RTP_HEADER_PADDING (buffer) = FALSE;
}
