00001 /* 00002 * RTP VP8 Packetizer 00003 * Copyright (c) 2010 Josh Allmann 00004 * 00005 * This file is part of FFmpeg. 00006 * 00007 * FFmpeg is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * FFmpeg is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with FFmpeg; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00022 #include "rtpenc.h" 00023 00024 /* Based on a draft spec for VP8 RTP. 00025 * ( http://www.webmproject.org/code/specs/rtp/ ) */ 00026 void ff_rtp_send_vp8(AVFormatContext *s1, const uint8_t *buf, int size) 00027 { 00028 RTPMuxContext *s = s1->priv_data; 00029 int len, max_packet_size; 00030 00031 s->buf_ptr = s->buf; 00032 s->timestamp = s->cur_timestamp; 00033 max_packet_size = s->max_payload_size - 1; // minus one for header byte 00034 00035 *s->buf_ptr++ = 1; // 0b1 indicates start of frame 00036 while (size > 0) { 00037 len = FFMIN(size, max_packet_size); 00038 00039 memcpy(s->buf_ptr, buf, len); 00040 ff_rtp_send_data(s1, s->buf, len+1, size == len); // marker bit is last packet in frame 00041 00042 size -= len; 00043 buf += len; 00044 s->buf_ptr = s->buf; 00045 *s->buf_ptr++ = 0; // payload descriptor 00046 } 00047 }
1.5.8