2 * RTMP network protocol
3 * Copyright (c) 2010 Howard Chu
5 * This file is part of FFmpeg.
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.
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.
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
24 * RTMP protocol based on http://rtmpdump.mplayerhq.hu/ librtmp
27 #include "libavutil/avstring.h"
28 #include "libavutil/mathematics.h"
29 #include "libavutil/opt.h"
33 #include <librtmp/rtmp.h>
34 #include <librtmp/log.h>
36 typedef struct LibRTMPContext {
48 char *client_buffer_time;
52 static void rtmp_log(int level, const char *fmt, va_list args)
56 case RTMP_LOGCRIT: level = AV_LOG_FATAL; break;
57 case RTMP_LOGERROR: level = AV_LOG_ERROR; break;
58 case RTMP_LOGWARNING: level = AV_LOG_WARNING; break;
59 case RTMP_LOGINFO: level = AV_LOG_INFO; break;
60 case RTMP_LOGDEBUG: level = AV_LOG_VERBOSE; break;
61 case RTMP_LOGDEBUG2: level = AV_LOG_DEBUG; break;
64 av_vlog(NULL, level, fmt, args);
65 av_log(NULL, level, "\n");
68 static int rtmp_close(URLContext *s)
70 LibRTMPContext *ctx = s->priv_data;
78 * Open RTMP connection and verify that the stream can be played.
80 * URL syntax: rtmp://server[:port][/app][/playpath][ keyword=value]...
81 * where 'app' is first one or two directories in the path
82 * (e.g. /ondemand/, /flash/live/, etc.)
83 * and 'playpath' is a file name (the rest of the path,
84 * may be prefixed with "mp4:")
86 * Additional RTMP library options may be appended as
87 * space-separated key-value pairs.
89 static int rtmp_open(URLContext *s, const char *uri, int flags)
91 LibRTMPContext *ctx = s->priv_data;
94 char *filename = s->filename;
95 int len = strlen(s->filename) + 1;
97 switch (av_log_get_level()) {
99 case AV_LOG_FATAL: level = RTMP_LOGCRIT; break;
100 case AV_LOG_ERROR: level = RTMP_LOGERROR; break;
101 case AV_LOG_WARNING: level = RTMP_LOGWARNING; break;
102 case AV_LOG_INFO: level = RTMP_LOGINFO; break;
103 case AV_LOG_VERBOSE: level = RTMP_LOGDEBUG; break;
104 case AV_LOG_DEBUG: level = RTMP_LOGDEBUG2; break;
106 RTMP_LogSetLevel(level);
107 RTMP_LogSetCallback(rtmp_log);
109 if (ctx->app) len += strlen(ctx->app) + sizeof(" app=");
110 if (ctx->tcurl) len += strlen(ctx->tcurl) + sizeof(" tcUrl=");
111 if (ctx->pageurl) len += strlen(ctx->pageurl) + sizeof(" pageUrl=");
112 if (ctx->flashver) len += strlen(ctx->flashver) + sizeof(" flashver=");
115 char *sep, *p = ctx->conn;
123 sep = strchr(p, ' ');
129 len += options * sizeof(" conn=");
130 len += strlen(ctx->conn);
134 len += strlen(ctx->playpath) + sizeof(" playpath=");
136 len += sizeof(" live=1");
138 len += strlen(ctx->subscribe) + sizeof(" subscribe=");
140 if (ctx->client_buffer_time)
141 len += strlen(ctx->client_buffer_time) + sizeof(" buffer=");
143 if (ctx->swfurl || ctx->swfverify) {
144 len += sizeof(" swfUrl=");
147 len += strlen(ctx->swfverify) + sizeof(" swfVfy=1");
149 len += strlen(ctx->swfurl);
152 if (!(filename = av_malloc(len)))
153 return AVERROR(ENOMEM);
155 av_strlcpy(filename, s->filename, len);
157 av_strlcat(filename, " app=", len);
158 av_strlcat(filename, ctx->app, len);
161 av_strlcat(filename, " tcUrl=", len);
162 av_strlcat(filename, ctx->tcurl, len);
165 av_strlcat(filename, " pageUrl=", len);
166 av_strlcat(filename, ctx->pageurl, len);
169 av_strlcat(filename, " swfUrl=", len);
170 av_strlcat(filename, ctx->pageurl, len);
173 av_strlcat(filename, " flashVer=", len);
174 av_strlcat(filename, ctx->flashver, len);
177 char *sep, *p = ctx->conn;
179 av_strlcat(filename, " conn=", len);
183 sep = strchr(p, ' ');
186 av_strlcat(filename, p, len);
193 av_strlcat(filename, " playpath=", len);
194 av_strlcat(filename, ctx->playpath, len);
197 av_strlcat(filename, " live=1", len);
198 if (ctx->subscribe) {
199 av_strlcat(filename, " subscribe=", len);
200 av_strlcat(filename, ctx->subscribe, len);
202 if (ctx->client_buffer_time) {
203 av_strlcat(filename, " buffer=", len);
204 av_strlcat(filename, ctx->client_buffer_time, len);
206 if (ctx->swfurl || ctx->swfverify) {
207 av_strlcat(filename, " swfUrl=", len);
209 if (ctx->swfverify) {
210 av_strlcat(filename, ctx->swfverify, len);
211 av_strlcat(filename, " swfVfy=1", len);
213 av_strlcat(filename, ctx->swfurl, len);
218 if (!RTMP_SetupURL(r, filename)) {
219 rc = AVERROR_UNKNOWN;
223 if (flags & AVIO_FLAG_WRITE)
226 if (!RTMP_Connect(r, NULL) || !RTMP_ConnectStream(r, 0)) {
227 rc = AVERROR_UNKNOWN;
234 if (filename != s->filename)
242 static int rtmp_write(URLContext *s, const uint8_t *buf, int size)
244 LibRTMPContext *ctx = s->priv_data;
245 RTMP *r = &ctx->rtmp;
247 return RTMP_Write(r, buf, size);
250 static int rtmp_read(URLContext *s, uint8_t *buf, int size)
252 LibRTMPContext *ctx = s->priv_data;
253 RTMP *r = &ctx->rtmp;
255 return RTMP_Read(r, buf, size);
258 static int rtmp_read_pause(URLContext *s, int pause)
260 LibRTMPContext *ctx = s->priv_data;
261 RTMP *r = &ctx->rtmp;
263 if (!RTMP_Pause(r, pause))
264 return AVERROR_UNKNOWN;
268 static int64_t rtmp_read_seek(URLContext *s, int stream_index,
269 int64_t timestamp, int flags)
271 LibRTMPContext *ctx = s->priv_data;
272 RTMP *r = &ctx->rtmp;
274 if (flags & AVSEEK_FLAG_BYTE)
275 return AVERROR(ENOSYS);
277 /* seeks are in milliseconds */
278 if (stream_index < 0)
279 timestamp = av_rescale_rnd(timestamp, 1000, AV_TIME_BASE,
280 flags & AVSEEK_FLAG_BACKWARD ? AV_ROUND_DOWN : AV_ROUND_UP);
282 if (!RTMP_SendSeek(r, timestamp))
283 return AVERROR_UNKNOWN;
287 static int rtmp_get_file_handle(URLContext *s)
289 LibRTMPContext *ctx = s->priv_data;
290 RTMP *r = &ctx->rtmp;
292 return RTMP_Socket(r);
295 #define OFFSET(x) offsetof(LibRTMPContext, x)
296 #define DEC AV_OPT_FLAG_DECODING_PARAM
297 #define ENC AV_OPT_FLAG_ENCODING_PARAM
298 static const AVOption options[] = {
299 {"rtmp_app", "Name of application to connect to on the RTMP server", OFFSET(app), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
300 {"rtmp_buffer", "Set buffer time in milliseconds. The default is 3000.", OFFSET(client_buffer_time), AV_OPT_TYPE_STRING, {.str = "3000"}, 0, 0, DEC|ENC},
301 {"rtmp_conn", "Append arbitrary AMF data to the Connect message", OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
302 {"rtmp_flashver", "Version of the Flash plugin used to run the SWF player.", OFFSET(flashver), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
303 {"rtmp_live", "Specify that the media is a live stream.", OFFSET(live), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtmp_live"},
304 {"any", "both", 0, AV_OPT_TYPE_CONST, {.i64 = -2}, 0, 0, DEC, "rtmp_live"},
305 {"live", "live stream", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, DEC, "rtmp_live"},
306 {"recorded", "recorded stream", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, DEC, "rtmp_live"},
307 {"rtmp_pageurl", "URL of the web page in which the media was embedded. By default no value will be sent.", OFFSET(pageurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
308 {"rtmp_playpath", "Stream identifier to play or to publish", OFFSET(playpath), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
309 {"rtmp_subscribe", "Name of live stream to subscribe to. Defaults to rtmp_playpath.", OFFSET(subscribe), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
310 {"rtmp_swfurl", "URL of the SWF player. By default no value will be sent", OFFSET(swfurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
311 {"rtmp_swfverify", "URL to player swf file, compute hash/size automatically. (unimplemented)", OFFSET(swfverify), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
312 {"rtmp_tcurl", "URL of the target stream. Defaults to proto://host[:port]/app.", OFFSET(tcurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
316 #define RTMP_CLASS(flavor)\
317 static const AVClass lib ## flavor ## _class = {\
318 .class_name = "lib" #flavor " protocol",\
319 .item_name = av_default_item_name,\
321 .version = LIBAVUTIL_VERSION_INT,\
325 URLProtocol ff_librtmp_protocol = {
327 .url_open = rtmp_open,
328 .url_read = rtmp_read,
329 .url_write = rtmp_write,
330 .url_close = rtmp_close,
331 .url_read_pause = rtmp_read_pause,
332 .url_read_seek = rtmp_read_seek,
333 .url_get_file_handle = rtmp_get_file_handle,
334 .priv_data_size = sizeof(LibRTMPContext),
335 .priv_data_class = &librtmp_class,
336 .flags = URL_PROTOCOL_FLAG_NETWORK,
340 URLProtocol ff_librtmpt_protocol = {
342 .url_open = rtmp_open,
343 .url_read = rtmp_read,
344 .url_write = rtmp_write,
345 .url_close = rtmp_close,
346 .url_read_pause = rtmp_read_pause,
347 .url_read_seek = rtmp_read_seek,
348 .url_get_file_handle = rtmp_get_file_handle,
349 .priv_data_size = sizeof(LibRTMPContext),
350 .priv_data_class = &librtmpt_class,
351 .flags = URL_PROTOCOL_FLAG_NETWORK,
355 URLProtocol ff_librtmpe_protocol = {
357 .url_open = rtmp_open,
358 .url_read = rtmp_read,
359 .url_write = rtmp_write,
360 .url_close = rtmp_close,
361 .url_read_pause = rtmp_read_pause,
362 .url_read_seek = rtmp_read_seek,
363 .url_get_file_handle = rtmp_get_file_handle,
364 .priv_data_size = sizeof(LibRTMPContext),
365 .priv_data_class = &librtmpe_class,
366 .flags = URL_PROTOCOL_FLAG_NETWORK,
370 URLProtocol ff_librtmpte_protocol = {
372 .url_open = rtmp_open,
373 .url_read = rtmp_read,
374 .url_write = rtmp_write,
375 .url_close = rtmp_close,
376 .url_read_pause = rtmp_read_pause,
377 .url_read_seek = rtmp_read_seek,
378 .url_get_file_handle = rtmp_get_file_handle,
379 .priv_data_size = sizeof(LibRTMPContext),
380 .priv_data_class = &librtmpte_class,
381 .flags = URL_PROTOCOL_FLAG_NETWORK,
385 URLProtocol ff_librtmps_protocol = {
387 .url_open = rtmp_open,
388 .url_read = rtmp_read,
389 .url_write = rtmp_write,
390 .url_close = rtmp_close,
391 .url_read_pause = rtmp_read_pause,
392 .url_read_seek = rtmp_read_seek,
393 .url_get_file_handle = rtmp_get_file_handle,
394 .priv_data_size = sizeof(LibRTMPContext),
395 .priv_data_class = &librtmps_class,
396 .flags = URL_PROTOCOL_FLAG_NETWORK,