libavformat/librtmp.c

   1 /*
   2  * RTMP network protocol
   3  * Copyright (c) 2010 Howard Chu
   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 /**
  23  * @file libavformat/librtmp.c
  24  * RTMP protocol based on http://rtmpdump.mplayerhq.hu librtmp
  25  */
  26
  27 #include "avformat.h"
  28
  29 #include <librtmp/rtmp.h>
  30 #include <librtmp/log.h>
  31
  32 static int rtmp_close(URLContext *s)
  33 {
  34     RTMP *r = s->priv_data;
  35
  36     RTMP_Close(r);
  37     av_free(r);
  38     return 0;
  39 }
  40
  41 /**
  42  * Opens RTMP connection and verifies that the stream can be played.
  43  *
  44  * URL syntax: rtmp://server[:port][/app][/playpath][ keyword=value]...
  45  *             where 'app' is first one or two directories in the path
  46  *             (e.g. /ondemand/, /flash/live/, etc.)
  47  *             and 'playpath' is a file name (the rest of the path,
  48  *             may be prefixed with "mp4:")
  49  *
  50  *             Additional RTMP library options may be appended as
  51  *             space-separated key-value pairs.
  52  */
  53 static int rtmp_open(URLContext *s, const char *uri, int flags)
  54 {
  55     RTMP *r;
  56     int rc;
  57
  58     r = av_mallocz(sizeof(RTMP));
  59     if (!r)
  60         return AVERROR(ENOMEM);
  61
  62     switch(av_log_get_level()) {
  63     default:
  64     case AV_LOG_FATAL:   rc = RTMP_LOGCRIT;    break;
  65     case AV_LOG_ERROR:   rc = RTMP_LOGERROR;   break;
  66     case AV_LOG_WARNING: rc = RTMP_LOGWARNING; break;
  67     case AV_LOG_INFO:    rc = RTMP_LOGINFO;    break;
  68     case AV_LOG_VERBOSE: rc = RTMP_LOGDEBUG;   break;
  69     case AV_LOG_DEBUG:   rc = RTMP_LOGDEBUG2;  break;
  70     }
  71     RTMP_LogSetLevel(rc);
  72
  73     RTMP_Init(r);
  74     if (!RTMP_SetupURL(r, s->filename)) {
  75         rc = -1;
  76         goto fail;
  77     }
  78
  79     if (flags & URL_WRONLY)
  80         r->Link.protocol |= RTMP_FEATURE_WRITE;
  81
  82     if (!RTMP_Connect(r, NULL) || !RTMP_ConnectStream(r, 0)) {
  83         rc = -1;
  84         goto fail;
  85     }
  86
  87     s->priv_data = r;
  88     s->is_streamed = 1;
  89     return 0;
  90 fail:
  91     av_free(r);
  92     return rc;
  93 }
  94
  95 static int rtmp_write(URLContext *s, uint8_t *buf, int size)
  96 {
  97     RTMP *r = s->priv_data;
  98
  99     return RTMP_Write(r, buf, size);
 100 }
 101
 102 static int rtmp_read(URLContext *s, uint8_t *buf, int size)
 103 {
 104     RTMP *r = s->priv_data;
 105
 106     return RTMP_Read(r, buf, size);
 107 }
 108
 109 static int rtmp_read_pause(URLContext *s, int pause)
 110 {
 111     RTMP *r = s->priv_data;
 112
 113     if (pause)
 114         r->m_pauseStamp =
 115             r->m_channelTimestamp[r->m_mediaChannel];
 116     if (!RTMP_SendPause(r, pause, r->m_pauseStamp))
 117         return -1;
 118     return 0;
 119 }
 120
 121 static int64_t rtmp_read_seek(URLContext *s, int stream_index,
 122                               int64_t timestamp, int flags)
 123 {
 124     RTMP *r = s->priv_data;
 125
 126     if (flags & AVSEEK_FLAG_BYTE)
 127         return AVERROR_NOTSUPP;
 128
 129     /* seeks are in milliseconds */
 130     timestamp = av_rescale(timestamp, AV_TIME_BASE, 1000);
 131     if (!RTMP_SendSeek(r, timestamp))
 132         return -1;
 133     return timestamp;
 134 }
 135
 136 static int rtmp_get_file_handle(URLContext *s)
 137 {
 138     RTMP *r = s->priv_data;
 139
 140     return r->m_sb.sb_socket;
 141 }
 142
 143 URLProtocol rtmp_protocol = {
 144     "rtmp",
 145     rtmp_open,
 146     rtmp_read,
 147     rtmp_write,
 148     NULL,                   /* seek */
 149     rtmp_close,
 150     NULL,                   /* next */
 151     rtmp_read_pause,
 152     rtmp_read_seek,
 153     rtmp_get_file_handle
 154 };
 155
 156 URLProtocol rtmpt_protocol = {
 157     "rtmpt",
 158     rtmp_open,
 159     rtmp_read,
 160     rtmp_write,
 161     NULL,                   /* seek */
 162     rtmp_close,
 163     NULL,                   /* next */
 164     rtmp_read_pause,
 165     rtmp_read_seek,
 166     rtmp_get_file_handle
 167 };
 168
 169 URLProtocol rtmpe_protocol = {
 170     "rtmpe",
 171     rtmp_open,
 172     rtmp_read,
 173     rtmp_write,
 174     NULL,                   /* seek */
 175     rtmp_close,
 176     NULL,                   /* next */
 177     rtmp_read_pause,
 178     rtmp_read_seek,
 179     rtmp_get_file_handle
 180 };
 181
 182 URLProtocol rtmpte_protocol = {
 183     "rtmpte",
 184     rtmp_open,
 185     rtmp_read,
 186     rtmp_write,
 187     NULL,                   /* seek */
 188     rtmp_close,
 189     NULL,                   /* next */
 190     rtmp_read_pause,
 191     rtmp_read_seek,
 192     rtmp_get_file_handle
 193 };
 194
 195 URLProtocol rtmps_protocol = {
 196     "rtmps",
 197     rtmp_open,
 198     rtmp_read,
 199     rtmp_write,
 200     NULL,                   /* seek */
 201     rtmp_close,
 202     NULL,                   /* next */
 203     rtmp_read_pause,
 204     rtmp_read_seek,
 205     rtmp_get_file_handle
 206 };