LCOV - code coverage report
Current view: top level - libavformat - rtpenc_vp8.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 17 0.0 %
Date: 2017-12-17 16:07:53 Functions: 0 1 0.0 %

          Line data    Source code
       1             : /*
       2             :  * RTP VP8 Packetizer
       3             :  * Copyright (c) 2010 Josh Allmann
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #include "rtpenc.h"
      23             : 
      24             : /* Based on a draft spec for VP8 RTP.
      25             :  * ( http://tools.ietf.org/html/draft-ietf-payload-vp8-05 ) */
      26           0 : void ff_rtp_send_vp8(AVFormatContext *s1, const uint8_t *buf, int size)
      27             : {
      28           0 :     RTPMuxContext *s = s1->priv_data;
      29             :     int len, max_packet_size, header_size;
      30             : 
      31           0 :     s->buf_ptr      = s->buf;
      32           0 :     s->timestamp    = s->cur_timestamp;
      33             : 
      34             :     // extended control bit set, reference frame, start of partition,
      35             :     // partition id 0
      36           0 :     *s->buf_ptr++ = 0x90;
      37           0 :     *s->buf_ptr++ = 0x80; // Picture id present
      38           0 :     *s->buf_ptr++ = s->frame_count++ & 0x7f;
      39             :     // Calculate the number of remaining bytes
      40           0 :     header_size     = s->buf_ptr - s->buf;
      41           0 :     max_packet_size = s->max_payload_size - header_size;
      42             : 
      43           0 :     while (size > 0) {
      44           0 :         len = FFMIN(size, max_packet_size);
      45             : 
      46           0 :         memcpy(s->buf_ptr, buf, len);
      47             :         // marker bit is last packet in frame
      48           0 :         ff_rtp_send_data(s1, s->buf, len + header_size, size == len);
      49             : 
      50           0 :         size         -= len;
      51           0 :         buf          += len;
      52             :         // Clear the partition start bit, keep the rest of the header untouched
      53           0 :         s->buf[0]    &= ~0x10;
      54             :     }
      55           0 : }

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