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path: root/libavformat/librtmp.c (plain)
blob: 146df660acfe7a07525f12628d82db7411abe302
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
24 * RTMP protocol based on http://rtmpdump.mplayerhq.hu/ librtmp
25 */
26
27#include "libavutil/avstring.h"
28#include "libavutil/mathematics.h"
29#include "libavutil/opt.h"
30#include "avformat.h"
31#if CONFIG_NETWORK
32#include "network.h"
33#endif
34#include "url.h"
35
36#include <librtmp/rtmp.h>
37#include <librtmp/log.h>
38
39typedef struct LibRTMPContext {
40 const AVClass *class;
41 RTMP rtmp;
42 char *app;
43 char *conn;
44 char *subscribe;
45 char *playpath;
46 char *tcurl;
47 char *flashver;
48 char *swfurl;
49 char *swfverify;
50 char *pageurl;
51 char *client_buffer_time;
52 int live;
53 char *temp_filename;
54 int buffer_size;
55} LibRTMPContext;
56
57static void rtmp_log(int level, const char *fmt, va_list args)
58{
59 switch (level) {
60 default:
61 case RTMP_LOGCRIT: level = AV_LOG_FATAL; break;
62 case RTMP_LOGERROR: level = AV_LOG_ERROR; break;
63 case RTMP_LOGWARNING: level = AV_LOG_WARNING; break;
64 case RTMP_LOGINFO: level = AV_LOG_INFO; break;
65 case RTMP_LOGDEBUG: level = AV_LOG_VERBOSE; break;
66 case RTMP_LOGDEBUG2: level = AV_LOG_DEBUG; break;
67 }
68
69 av_vlog(NULL, level, fmt, args);
70 av_log(NULL, level, "\n");
71}
72
73static int rtmp_close(URLContext *s)
74{
75 LibRTMPContext *ctx = s->priv_data;
76 RTMP *r = &ctx->rtmp;
77
78 RTMP_Close(r);
79 av_freep(&ctx->temp_filename);
80 return 0;
81}
82
83/**
84 * Open RTMP connection and verify that the stream can be played.
85 *
86 * URL syntax: rtmp://server[:port][/app][/playpath][ keyword=value]...
87 * where 'app' is first one or two directories in the path
88 * (e.g. /ondemand/, /flash/live/, etc.)
89 * and 'playpath' is a file name (the rest of the path,
90 * may be prefixed with "mp4:")
91 *
92 * Additional RTMP library options may be appended as
93 * space-separated key-value pairs.
94 */
95static int rtmp_open(URLContext *s, const char *uri, int flags)
96{
97 LibRTMPContext *ctx = s->priv_data;
98 RTMP *r = &ctx->rtmp;
99 int rc = 0, level;
100 char *filename = s->filename;
101 int len = strlen(s->filename) + 1;
102
103 switch (av_log_get_level()) {
104 default:
105 case AV_LOG_FATAL: level = RTMP_LOGCRIT; break;
106 case AV_LOG_ERROR: level = RTMP_LOGERROR; break;
107 case AV_LOG_WARNING: level = RTMP_LOGWARNING; break;
108 case AV_LOG_INFO: level = RTMP_LOGINFO; break;
109 case AV_LOG_VERBOSE: level = RTMP_LOGDEBUG; break;
110 case AV_LOG_DEBUG: level = RTMP_LOGDEBUG2; break;
111 }
112 RTMP_LogSetLevel(level);
113 RTMP_LogSetCallback(rtmp_log);
114
115 if (ctx->app) len += strlen(ctx->app) + sizeof(" app=");
116 if (ctx->tcurl) len += strlen(ctx->tcurl) + sizeof(" tcUrl=");
117 if (ctx->pageurl) len += strlen(ctx->pageurl) + sizeof(" pageUrl=");
118 if (ctx->flashver) len += strlen(ctx->flashver) + sizeof(" flashver=");
119
120 if (ctx->conn) {
121 char *sep, *p = ctx->conn;
122 int options = 0;
123
124 while (p) {
125 options++;
126 p += strspn(p, " ");
127 if (!*p)
128 break;
129 sep = strchr(p, ' ');
130 if (sep)
131 p = sep + 1;
132 else
133 break;
134 }
135 len += options * sizeof(" conn=");
136 len += strlen(ctx->conn);
137 }
138
139 if (ctx->playpath)
140 len += strlen(ctx->playpath) + sizeof(" playpath=");
141 if (ctx->live)
142 len += sizeof(" live=1");
143 if (ctx->subscribe)
144 len += strlen(ctx->subscribe) + sizeof(" subscribe=");
145
146 if (ctx->client_buffer_time)
147 len += strlen(ctx->client_buffer_time) + sizeof(" buffer=");
148
149 if (ctx->swfurl || ctx->swfverify) {
150 len += sizeof(" swfUrl=");
151
152 if (ctx->swfverify)
153 len += strlen(ctx->swfverify) + sizeof(" swfVfy=1");
154 else
155 len += strlen(ctx->swfurl);
156 }
157
158 if (!(ctx->temp_filename = filename = av_malloc(len)))
159 return AVERROR(ENOMEM);
160
161 av_strlcpy(filename, s->filename, len);
162 if (ctx->app) {
163 av_strlcat(filename, " app=", len);
164 av_strlcat(filename, ctx->app, len);
165 }
166 if (ctx->tcurl) {
167 av_strlcat(filename, " tcUrl=", len);
168 av_strlcat(filename, ctx->tcurl, len);
169 }
170 if (ctx->pageurl) {
171 av_strlcat(filename, " pageUrl=", len);
172 av_strlcat(filename, ctx->pageurl, len);
173 }
174 if (ctx->swfurl) {
175 av_strlcat(filename, " swfUrl=", len);
176 av_strlcat(filename, ctx->swfurl, len);
177 }
178 if (ctx->flashver) {
179 av_strlcat(filename, " flashVer=", len);
180 av_strlcat(filename, ctx->flashver, len);
181 }
182 if (ctx->conn) {
183 char *sep, *p = ctx->conn;
184 while (p) {
185 av_strlcat(filename, " conn=", len);
186 p += strspn(p, " ");
187 if (!*p)
188 break;
189 sep = strchr(p, ' ');
190 if (sep)
191 *sep = '\0';
192 av_strlcat(filename, p, len);
193
194 if (sep)
195 p = sep + 1;
196 else
197 break;
198 }
199 }
200 if (ctx->playpath) {
201 av_strlcat(filename, " playpath=", len);
202 av_strlcat(filename, ctx->playpath, len);
203 }
204 if (ctx->live)
205 av_strlcat(filename, " live=1", len);
206 if (ctx->subscribe) {
207 av_strlcat(filename, " subscribe=", len);
208 av_strlcat(filename, ctx->subscribe, len);
209 }
210 if (ctx->client_buffer_time) {
211 av_strlcat(filename, " buffer=", len);
212 av_strlcat(filename, ctx->client_buffer_time, len);
213 }
214 if (ctx->swfurl || ctx->swfverify) {
215 av_strlcat(filename, " swfUrl=", len);
216
217 if (ctx->swfverify) {
218 av_strlcat(filename, ctx->swfverify, len);
219 av_strlcat(filename, " swfVfy=1", len);
220 } else {
221 av_strlcat(filename, ctx->swfurl, len);
222 }
223 }
224
225 RTMP_Init(r);
226 if (!RTMP_SetupURL(r, filename)) {
227 rc = AVERROR_UNKNOWN;
228 goto fail;
229 }
230
231 if (flags & AVIO_FLAG_WRITE)
232 RTMP_EnableWrite(r);
233
234 if (!RTMP_Connect(r, NULL) || !RTMP_ConnectStream(r, 0)) {
235 rc = AVERROR_UNKNOWN;
236 goto fail;
237 }
238
239#if CONFIG_NETWORK
240 if (ctx->buffer_size >= 0 && (flags & AVIO_FLAG_WRITE)) {
241 int tmp = ctx->buffer_size;
242 setsockopt(r->m_sb.sb_socket, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp));
243 }
244#endif
245
246 s->is_streamed = 1;
247 return 0;
248fail:
249 av_freep(&ctx->temp_filename);
250 if (rc)
251 RTMP_Close(r);
252
253 return rc;
254}
255
256static int rtmp_write(URLContext *s, const uint8_t *buf, int size)
257{
258 LibRTMPContext *ctx = s->priv_data;
259 RTMP *r = &ctx->rtmp;
260
261 return RTMP_Write(r, buf, size);
262}
263
264static int rtmp_read(URLContext *s, uint8_t *buf, int size)
265{
266 LibRTMPContext *ctx = s->priv_data;
267 RTMP *r = &ctx->rtmp;
268
269 return RTMP_Read(r, buf, size);
270}
271
272static int rtmp_read_pause(URLContext *s, int pause)
273{
274 LibRTMPContext *ctx = s->priv_data;
275 RTMP *r = &ctx->rtmp;
276
277 if (!RTMP_Pause(r, pause))
278 return AVERROR_UNKNOWN;
279 return 0;
280}
281
282static int64_t rtmp_read_seek(URLContext *s, int stream_index,
283 int64_t timestamp, int flags)
284{
285 LibRTMPContext *ctx = s->priv_data;
286 RTMP *r = &ctx->rtmp;
287
288 if (flags & AVSEEK_FLAG_BYTE)
289 return AVERROR(ENOSYS);
290
291 /* seeks are in milliseconds */
292 if (stream_index < 0)
293 timestamp = av_rescale_rnd(timestamp, 1000, AV_TIME_BASE,
294 flags & AVSEEK_FLAG_BACKWARD ? AV_ROUND_DOWN : AV_ROUND_UP);
295
296 if (!RTMP_SendSeek(r, timestamp))
297 return AVERROR_UNKNOWN;
298 return timestamp;
299}
300
301static int rtmp_get_file_handle(URLContext *s)
302{
303 LibRTMPContext *ctx = s->priv_data;
304 RTMP *r = &ctx->rtmp;
305
306 return RTMP_Socket(r);
307}
308
309#define OFFSET(x) offsetof(LibRTMPContext, x)
310#define DEC AV_OPT_FLAG_DECODING_PARAM
311#define ENC AV_OPT_FLAG_ENCODING_PARAM
312static const AVOption options[] = {
313 {"rtmp_app", "Name of application to connect to on the RTMP server", OFFSET(app), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
314 {"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},
315 {"rtmp_conn", "Append arbitrary AMF data to the Connect message", OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
316 {"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},
317 {"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"},
318 {"any", "both", 0, AV_OPT_TYPE_CONST, {.i64 = -2}, 0, 0, DEC, "rtmp_live"},
319 {"live", "live stream", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, DEC, "rtmp_live"},
320 {"recorded", "recorded stream", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, DEC, "rtmp_live"},
321 {"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},
322 {"rtmp_playpath", "Stream identifier to play or to publish", OFFSET(playpath), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
323 {"rtmp_subscribe", "Name of live stream to subscribe to. Defaults to rtmp_playpath.", OFFSET(subscribe), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
324 {"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},
325 {"rtmp_swfverify", "URL to player swf file, compute hash/size automatically. (unimplemented)", OFFSET(swfverify), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
326 {"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},
327#if CONFIG_NETWORK
328 {"rtmp_buffer_size", "set buffer size in bytes", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, DEC|ENC },
329#endif
330 { NULL },
331};
332
333#define RTMP_CLASS(flavor)\
334static const AVClass lib ## flavor ## _class = {\
335 .class_name = "lib" #flavor " protocol",\
336 .item_name = av_default_item_name,\
337 .option = options,\
338 .version = LIBAVUTIL_VERSION_INT,\
339};
340
341RTMP_CLASS(rtmp)
342const URLProtocol ff_librtmp_protocol = {
343 .name = "rtmp",
344 .url_open = rtmp_open,
345 .url_read = rtmp_read,
346 .url_write = rtmp_write,
347 .url_close = rtmp_close,
348 .url_read_pause = rtmp_read_pause,
349 .url_read_seek = rtmp_read_seek,
350 .url_get_file_handle = rtmp_get_file_handle,
351 .priv_data_size = sizeof(LibRTMPContext),
352 .priv_data_class = &librtmp_class,
353 .flags = URL_PROTOCOL_FLAG_NETWORK,
354};
355
356RTMP_CLASS(rtmpt)
357const URLProtocol ff_librtmpt_protocol = {
358 .name = "rtmpt",
359 .url_open = rtmp_open,
360 .url_read = rtmp_read,
361 .url_write = rtmp_write,
362 .url_close = rtmp_close,
363 .url_read_pause = rtmp_read_pause,
364 .url_read_seek = rtmp_read_seek,
365 .url_get_file_handle = rtmp_get_file_handle,
366 .priv_data_size = sizeof(LibRTMPContext),
367 .priv_data_class = &librtmpt_class,
368 .flags = URL_PROTOCOL_FLAG_NETWORK,
369};
370
371RTMP_CLASS(rtmpe)
372const URLProtocol ff_librtmpe_protocol = {
373 .name = "rtmpe",
374 .url_open = rtmp_open,
375 .url_read = rtmp_read,
376 .url_write = rtmp_write,
377 .url_close = rtmp_close,
378 .url_read_pause = rtmp_read_pause,
379 .url_read_seek = rtmp_read_seek,
380 .url_get_file_handle = rtmp_get_file_handle,
381 .priv_data_size = sizeof(LibRTMPContext),
382 .priv_data_class = &librtmpe_class,
383 .flags = URL_PROTOCOL_FLAG_NETWORK,
384};
385
386RTMP_CLASS(rtmpte)
387const URLProtocol ff_librtmpte_protocol = {
388 .name = "rtmpte",
389 .url_open = rtmp_open,
390 .url_read = rtmp_read,
391 .url_write = rtmp_write,
392 .url_close = rtmp_close,
393 .url_read_pause = rtmp_read_pause,
394 .url_read_seek = rtmp_read_seek,
395 .url_get_file_handle = rtmp_get_file_handle,
396 .priv_data_size = sizeof(LibRTMPContext),
397 .priv_data_class = &librtmpte_class,
398 .flags = URL_PROTOCOL_FLAG_NETWORK,
399};
400
401RTMP_CLASS(rtmps)
402const URLProtocol ff_librtmps_protocol = {
403 .name = "rtmps",
404 .url_open = rtmp_open,
405 .url_read = rtmp_read,
406 .url_write = rtmp_write,
407 .url_close = rtmp_close,
408 .url_read_pause = rtmp_read_pause,
409 .url_read_seek = rtmp_read_seek,
410 .url_get_file_handle = rtmp_get_file_handle,
411 .priv_data_size = sizeof(LibRTMPContext),
412 .priv_data_class = &librtmps_class,
413 .flags = URL_PROTOCOL_FLAG_NETWORK,
414};
415
generated by cgit at 2024-05-17 06:58:07 (GMT)