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rtpbuffer: Add function to transform a GstBuffer into a GstBufferList

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Add a new function called gst_rtp_buffer_list_from_buffer() that takes
a GstBuffer containing a RTP packets and spits out a GstBufferList
containing two buffers, one with the header and the other with the payload.
This commit is contained in:
Olivier Crête 2010-08-23 14:24:21 -04:00 committed by Wim Taymans
parent f6b7ea3d39
commit 7536d96d7c
3 changed files with 39 additions and 0 deletions
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1
docs/libs/gst-plugins-base-libs-sections.txt
View file

@ -1288,6 +1288,7 @@ gst_rtp_buffer_new_take_data
gst_rtp_buffer_new_copy_data
gst_rtp_buffer_new_allocate
gst_rtp_buffer_new_allocate_len
gst_rtp_buffer_list_from_buffer
gst_rtp_buffer_calc_header_len
gst_rtp_buffer_calc_packet_len

35
gst-libs/gst/rtp/gstrtpbuffer.c
View file

@ -2022,3 +2022,38 @@ gst_rtp_buffer_list_add_extension_twobytes_header (GstBufferListIterator * it,
return retval;
}
/**
* gst_rtp_buffer_list_from_buffer:
* @buffer: a #GstBuffer containing a RTP packet
*
* Splits a #GstBuffer into a #GstBufferList containing separate
* buffers for the header and data sections.
*
* Returns: a #GstBufferList
*/
GstBufferList *
gst_rtp_buffer_list_from_buffer (GstBuffer * buffer)
{
GstBufferList *bufferlist;
GstBuffer *sub;
GstBufferListIterator *it;
guint8 *payload;
bufferlist = gst_buffer_list_new ();
it = gst_buffer_list_iterate (bufferlist);
gst_buffer_list_iterator_add_group (it);
payload = gst_rtp_buffer_get_payload (buffer);
sub = gst_buffer_create_sub (buffer, 0, payload - GST_BUFFER_DATA (buffer));
gst_buffer_list_iterator_add (it, sub);
sub = gst_rtp_buffer_get_payload_buffer (buffer);
gst_buffer_list_iterator_add (it, sub);
gst_buffer_list_iterator_free (it);
return bufferlist;
}

3
gst-libs/gst/rtp/gstrtpbuffer.h
View file

@ -45,6 +45,9 @@ GstBuffer* gst_rtp_buffer_new_copy_data (gpointer data, guint len);
GstBuffer* gst_rtp_buffer_new_allocate (guint payload_len, guint8 pad_len, guint8 csrc_count);
GstBuffer* gst_rtp_buffer_new_allocate_len (guint packet_len, guint8 pad_len, guint8 csrc_count);
GstBufferList* gst_rtp_buffer_list_from_buffer (GstBuffer * buffer);
guint gst_rtp_buffer_calc_header_len (guint8 csrc_count);
guint gst_rtp_buffer_calc_packet_len (guint payload_len, guint8 pad_len, guint8 csrc_count);
guint gst_rtp_buffer_calc_payload_len (guint packet_len, guint8 pad_len, guint8 csrc_count);