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ffmpeg / libavformat / librtmp.c @ fc8fa007

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/*
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 * RTMP network protocol
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 * Copyright (c) 2010 Howard Chu
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file libavformat/librtmp.c
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 * RTMP protocol based on http://rtmpdump.mplayerhq.hu/ librtmp
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 */
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#include "avformat.h"
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#include <librtmp/rtmp.h>
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#include <librtmp/log.h>
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static void rtmp_log(int level, const char *fmt, va_list args)
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{
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    switch (level) {
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    default:
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    case RTMP_LOGCRIT:    level = AV_LOG_FATAL;   break;
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    case RTMP_LOGERROR:   level = AV_LOG_ERROR;   break;
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    case RTMP_LOGWARNING: level = AV_LOG_WARNING; break;
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    case RTMP_LOGINFO:    level = AV_LOG_INFO;    break;
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    case RTMP_LOGDEBUG:   level = AV_LOG_VERBOSE; break;
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    case RTMP_LOGDEBUG2:  level = AV_LOG_DEBUG;   break;
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    }
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    av_vlog(NULL, level, fmt, args);
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    av_log(NULL, level, "\n");
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}
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static int rtmp_close(URLContext *s)
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{
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    RTMP *r = s->priv_data;
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    RTMP_Close(r);
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    av_free(r);
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    return 0;
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}
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/**
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 * Opens RTMP connection and verifies that the stream can be played.
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 *
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 * URL syntax: rtmp://server[:port][/app][/playpath][ keyword=value]...
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 *             where 'app' is first one or two directories in the path
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 *             (e.g. /ondemand/, /flash/live/, etc.)
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 *             and 'playpath' is a file name (the rest of the path,
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 *             may be prefixed with "mp4:")
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 *
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 *             Additional RTMP library options may be appended as
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 *             space-separated key-value pairs.
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 */
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static int rtmp_open(URLContext *s, const char *uri, int flags)
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{
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    RTMP *r;
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    int rc;
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    r = av_mallocz(sizeof(RTMP));
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    if (!r)
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        return AVERROR(ENOMEM);
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    switch (av_log_get_level()) {
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    default:
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    case AV_LOG_FATAL:   rc = RTMP_LOGCRIT;    break;
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    case AV_LOG_ERROR:   rc = RTMP_LOGERROR;   break;
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    case AV_LOG_WARNING: rc = RTMP_LOGWARNING; break;
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    case AV_LOG_INFO:    rc = RTMP_LOGINFO;    break;
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    case AV_LOG_VERBOSE: rc = RTMP_LOGDEBUG;   break;
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    case AV_LOG_DEBUG:   rc = RTMP_LOGDEBUG2;  break;
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    }
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    RTMP_LogSetLevel(rc);
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    RTMP_LogSetCallback(rtmp_log);
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    RTMP_Init(r);
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    if (!RTMP_SetupURL(r, s->filename)) {
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        rc = -1;
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        goto fail;
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    }
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    if (flags & URL_WRONLY)
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        r->Link.protocol |= RTMP_FEATURE_WRITE;
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    if (!RTMP_Connect(r, NULL) || !RTMP_ConnectStream(r, 0)) {
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        rc = -1;
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        goto fail;
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    }
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    s->priv_data   = r;
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    s->is_streamed = 1;
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    return 0;
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fail:
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    av_free(r);
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    return rc;
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}
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static int rtmp_write(URLContext *s, uint8_t *buf, int size)
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{
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    RTMP *r = s->priv_data;
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    return RTMP_Write(r, buf, size);
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}
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static int rtmp_read(URLContext *s, uint8_t *buf, int size)
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{
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    RTMP *r = s->priv_data;
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    return RTMP_Read(r, buf, size);
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}
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static int rtmp_read_pause(URLContext *s, int pause)
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{
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    RTMP *r = s->priv_data;
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    if (pause)
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        r->m_pauseStamp =
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            r->m_channelTimestamp[r->m_mediaChannel];
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    if (!RTMP_SendPause(r, pause, r->m_pauseStamp))
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        return -1;
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    return 0;
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}
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static int64_t rtmp_read_seek(URLContext *s, int stream_index,
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                              int64_t timestamp, int flags)
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{
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    RTMP *r = s->priv_data;
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    if (flags & AVSEEK_FLAG_BYTE)
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        return AVERROR(ENOSYS);
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    /* seeks are in milliseconds */
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    if (stream_index < 0)
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        timestamp = av_rescale_rnd(timestamp, 1000, AV_TIME_BASE,
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            flags & AVSEEK_FLAG_BACKWARD ? AV_ROUND_DOWN : AV_ROUND_UP);
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    if (!RTMP_SendSeek(r, timestamp))
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        return -1;
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    return timestamp;
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}
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static int rtmp_get_file_handle(URLContext *s)
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{
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    RTMP *r = s->priv_data;
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    return r->m_sb.sb_socket;
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}
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URLProtocol rtmp_protocol = {
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    "rtmp",
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    rtmp_open,
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    rtmp_read,
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    rtmp_write,
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    NULL,                   /* seek */
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    rtmp_close,
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    NULL,                   /* next */
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    rtmp_read_pause,
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    rtmp_read_seek,
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    rtmp_get_file_handle
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};
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URLProtocol rtmpt_protocol = {
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    "rtmpt",
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    rtmp_open,
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    rtmp_read,
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    rtmp_write,
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    NULL,                   /* seek */
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    rtmp_close,
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    NULL,                   /* next */
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    rtmp_read_pause,
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    rtmp_read_seek,
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    rtmp_get_file_handle
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};
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URLProtocol rtmpe_protocol = {
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    "rtmpe",
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    rtmp_open,
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    rtmp_read,
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    rtmp_write,
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    NULL,                   /* seek */
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    rtmp_close,
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    NULL,                   /* next */
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    rtmp_read_pause,
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    rtmp_read_seek,
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    rtmp_get_file_handle
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};
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URLProtocol rtmpte_protocol = {
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    "rtmpte",
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    rtmp_open,
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    rtmp_read,
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    rtmp_write,
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    NULL,                   /* seek */
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    rtmp_close,
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    NULL,                   /* next */
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    rtmp_read_pause,
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    rtmp_read_seek,
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    rtmp_get_file_handle
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};
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URLProtocol rtmps_protocol = {
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    "rtmps",
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    rtmp_open,
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    rtmp_read,
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    rtmp_write,
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    NULL,                   /* seek */
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    rtmp_close,
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    NULL,                   /* next */
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    rtmp_read_pause,
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    rtmp_read_seek,
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    rtmp_get_file_handle
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};