| 1 | /* |
| 2 | * copyright (c) 2007 Luca Abeni |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #include <string.h> |
| 22 | #include "libavutil/avstring.h" |
| 23 | #include "libavutil/base64.h" |
| 24 | #include "libavutil/dict.h" |
| 25 | #include "libavutil/parseutils.h" |
| 26 | #include "libavutil/opt.h" |
| 27 | #include "libavcodec/xiph.h" |
| 28 | #include "libavcodec/mpeg4audio.h" |
| 29 | #include "avformat.h" |
| 30 | #include "internal.h" |
| 31 | #include "avc.h" |
| 32 | #include "rtp.h" |
| 33 | #if CONFIG_NETWORK |
| 34 | #include "network.h" |
| 35 | #endif |
| 36 | |
| 37 | #if CONFIG_RTP_MUXER |
| 38 | #define MAX_EXTRADATA_SIZE ((INT_MAX - 10) / 2) |
| 39 | |
| 40 | struct sdp_session_level { |
| 41 | int sdp_version; /**< protocol version (currently 0) */ |
| 42 | int id; /**< session ID */ |
| 43 | int version; /**< session version */ |
| 44 | int start_time; /**< session start time (NTP time, in seconds), |
| 45 | or 0 in case of permanent session */ |
| 46 | int end_time; /**< session end time (NTP time, in seconds), |
| 47 | or 0 if the session is not bounded */ |
| 48 | int ttl; /**< TTL, in case of multicast stream */ |
| 49 | const char *user; /**< username of the session's creator */ |
| 50 | const char *src_addr; /**< IP address of the machine from which the session was created */ |
| 51 | const char *src_type; /**< address type of src_addr */ |
| 52 | const char *dst_addr; /**< destination IP address (can be multicast) */ |
| 53 | const char *dst_type; /**< destination IP address type */ |
| 54 | const char *name; /**< session name (can be an empty string) */ |
| 55 | }; |
| 56 | |
| 57 | static void sdp_write_address(char *buff, int size, const char *dest_addr, |
| 58 | const char *dest_type, int ttl) |
| 59 | { |
| 60 | if (dest_addr) { |
| 61 | if (!dest_type) |
| 62 | dest_type = "IP4"; |
| 63 | if (ttl > 0 && !strcmp(dest_type, "IP4")) { |
| 64 | /* The TTL should only be specified for IPv4 multicast addresses, |
| 65 | * not for IPv6. */ |
| 66 | av_strlcatf(buff, size, "c=IN %s %s/%d\r\n", dest_type, dest_addr, ttl); |
| 67 | } else { |
| 68 | av_strlcatf(buff, size, "c=IN %s %s\r\n", dest_type, dest_addr); |
| 69 | } |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | static void sdp_write_header(char *buff, int size, struct sdp_session_level *s) |
| 74 | { |
| 75 | av_strlcatf(buff, size, "v=%d\r\n" |
| 76 | "o=- %d %d IN %s %s\r\n" |
| 77 | "s=%s\r\n", |
| 78 | s->sdp_version, |
| 79 | s->id, s->version, s->src_type, s->src_addr, |
| 80 | s->name); |
| 81 | sdp_write_address(buff, size, s->dst_addr, s->dst_type, s->ttl); |
| 82 | av_strlcatf(buff, size, "t=%d %d\r\n" |
| 83 | "a=tool:libavformat " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\r\n", |
| 84 | s->start_time, s->end_time); |
| 85 | } |
| 86 | |
| 87 | #if CONFIG_NETWORK |
| 88 | static int resolve_destination(char *dest_addr, int size, char *type, |
| 89 | int type_size) |
| 90 | { |
| 91 | struct addrinfo hints = { 0 }, *ai; |
| 92 | int is_multicast; |
| 93 | |
| 94 | av_strlcpy(type, "IP4", type_size); |
| 95 | if (!dest_addr[0]) |
| 96 | return 0; |
| 97 | |
| 98 | /* Resolve the destination, since it must be written |
| 99 | * as a numeric IP address in the SDP. */ |
| 100 | |
| 101 | if (getaddrinfo(dest_addr, NULL, &hints, &ai)) |
| 102 | return 0; |
| 103 | getnameinfo(ai->ai_addr, ai->ai_addrlen, dest_addr, size, |
| 104 | NULL, 0, NI_NUMERICHOST); |
| 105 | #ifdef AF_INET6 |
| 106 | if (ai->ai_family == AF_INET6) |
| 107 | av_strlcpy(type, "IP6", type_size); |
| 108 | #endif |
| 109 | is_multicast = ff_is_multicast_address(ai->ai_addr); |
| 110 | freeaddrinfo(ai); |
| 111 | return is_multicast; |
| 112 | } |
| 113 | #else |
| 114 | static int resolve_destination(char *dest_addr, int size, char *type, |
| 115 | int type_size) |
| 116 | { |
| 117 | return 0; |
| 118 | } |
| 119 | #endif |
| 120 | |
| 121 | static int sdp_get_address(char *dest_addr, int size, int *ttl, const char *url) |
| 122 | { |
| 123 | int port; |
| 124 | const char *p; |
| 125 | char proto[32]; |
| 126 | |
| 127 | av_url_split(proto, sizeof(proto), NULL, 0, dest_addr, size, &port, NULL, 0, url); |
| 128 | |
| 129 | *ttl = 0; |
| 130 | |
| 131 | if (strcmp(proto, "rtp") && strcmp(proto, "srtp")) { |
| 132 | /* The url isn't for the actual rtp sessions, |
| 133 | * don't parse out anything else than the destination. |
| 134 | */ |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | p = strchr(url, '?'); |
| 139 | if (p) { |
| 140 | char buff[64]; |
| 141 | |
| 142 | if (av_find_info_tag(buff, sizeof(buff), "ttl", p)) { |
| 143 | *ttl = strtol(buff, NULL, 10); |
| 144 | } else { |
| 145 | *ttl = 5; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | return port; |
| 150 | } |
| 151 | |
| 152 | #define MAX_PSET_SIZE 1024 |
| 153 | static char *extradata2psets(AVCodecContext *c) |
| 154 | { |
| 155 | char *psets, *p; |
| 156 | const uint8_t *r; |
| 157 | static const char pset_string[] = "; sprop-parameter-sets="; |
| 158 | static const char profile_string[] = "; profile-level-id="; |
| 159 | uint8_t *orig_extradata = NULL; |
| 160 | int orig_extradata_size = 0; |
| 161 | const uint8_t *sps = NULL, *sps_end; |
| 162 | |
| 163 | if (c->extradata_size > MAX_EXTRADATA_SIZE) { |
| 164 | av_log(c, AV_LOG_ERROR, "Too much extradata!\n"); |
| 165 | |
| 166 | return NULL; |
| 167 | } |
| 168 | if (c->extradata[0] == 1) { |
| 169 | uint8_t *dummy_p; |
| 170 | int dummy_int; |
| 171 | AVBitStreamFilterContext *bsfc= av_bitstream_filter_init("h264_mp4toannexb"); |
| 172 | |
| 173 | if (!bsfc) { |
| 174 | av_log(c, AV_LOG_ERROR, "Cannot open the h264_mp4toannexb BSF!\n"); |
| 175 | |
| 176 | return NULL; |
| 177 | } |
| 178 | |
| 179 | orig_extradata_size = c->extradata_size; |
| 180 | orig_extradata = av_mallocz(orig_extradata_size + |
| 181 | FF_INPUT_BUFFER_PADDING_SIZE); |
| 182 | if (!orig_extradata) { |
| 183 | av_bitstream_filter_close(bsfc); |
| 184 | return NULL; |
| 185 | } |
| 186 | memcpy(orig_extradata, c->extradata, orig_extradata_size); |
| 187 | av_bitstream_filter_filter(bsfc, c, NULL, &dummy_p, &dummy_int, NULL, 0, 0); |
| 188 | av_bitstream_filter_close(bsfc); |
| 189 | } |
| 190 | |
| 191 | psets = av_mallocz(MAX_PSET_SIZE); |
| 192 | if (!psets) { |
| 193 | av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the parameter sets.\n"); |
| 194 | av_free(orig_extradata); |
| 195 | return NULL; |
| 196 | } |
| 197 | memcpy(psets, pset_string, strlen(pset_string)); |
| 198 | p = psets + strlen(pset_string); |
| 199 | r = ff_avc_find_startcode(c->extradata, c->extradata + c->extradata_size); |
| 200 | while (r < c->extradata + c->extradata_size) { |
| 201 | const uint8_t *r1; |
| 202 | uint8_t nal_type; |
| 203 | |
| 204 | while (!*(r++)); |
| 205 | nal_type = *r & 0x1f; |
| 206 | r1 = ff_avc_find_startcode(r, c->extradata + c->extradata_size); |
| 207 | if (nal_type != 7 && nal_type != 8) { /* Only output SPS and PPS */ |
| 208 | r = r1; |
| 209 | continue; |
| 210 | } |
| 211 | if (p != (psets + strlen(pset_string))) { |
| 212 | *p = ','; |
| 213 | p++; |
| 214 | } |
| 215 | if (!sps) { |
| 216 | sps = r; |
| 217 | sps_end = r1; |
| 218 | } |
| 219 | if (!av_base64_encode(p, MAX_PSET_SIZE - (p - psets), r, r1 - r)) { |
| 220 | av_log(c, AV_LOG_ERROR, "Cannot Base64-encode %"PTRDIFF_SPECIFIER" %"PTRDIFF_SPECIFIER"!\n", MAX_PSET_SIZE - (p - psets), r1 - r); |
| 221 | av_free(psets); |
| 222 | |
| 223 | return NULL; |
| 224 | } |
| 225 | p += strlen(p); |
| 226 | r = r1; |
| 227 | } |
| 228 | if (sps && sps_end - sps >= 4) { |
| 229 | memcpy(p, profile_string, strlen(profile_string)); |
| 230 | p += strlen(p); |
| 231 | ff_data_to_hex(p, sps + 1, 3, 0); |
| 232 | p[6] = '\0'; |
| 233 | } |
| 234 | if (orig_extradata) { |
| 235 | av_free(c->extradata); |
| 236 | c->extradata = orig_extradata; |
| 237 | c->extradata_size = orig_extradata_size; |
| 238 | } |
| 239 | |
| 240 | return psets; |
| 241 | } |
| 242 | |
| 243 | static char *extradata2config(AVCodecContext *c) |
| 244 | { |
| 245 | char *config; |
| 246 | |
| 247 | if (c->extradata_size > MAX_EXTRADATA_SIZE) { |
| 248 | av_log(c, AV_LOG_ERROR, "Too much extradata!\n"); |
| 249 | |
| 250 | return NULL; |
| 251 | } |
| 252 | config = av_malloc(10 + c->extradata_size * 2); |
| 253 | if (!config) { |
| 254 | av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n"); |
| 255 | return NULL; |
| 256 | } |
| 257 | memcpy(config, "; config=", 9); |
| 258 | ff_data_to_hex(config + 9, c->extradata, c->extradata_size, 0); |
| 259 | config[9 + c->extradata_size * 2] = 0; |
| 260 | |
| 261 | return config; |
| 262 | } |
| 263 | |
| 264 | static char *xiph_extradata2config(AVCodecContext *c) |
| 265 | { |
| 266 | char *config, *encoded_config; |
| 267 | uint8_t *header_start[3]; |
| 268 | int headers_len, header_len[3], config_len; |
| 269 | int first_header_size; |
| 270 | |
| 271 | switch (c->codec_id) { |
| 272 | case AV_CODEC_ID_THEORA: |
| 273 | first_header_size = 42; |
| 274 | break; |
| 275 | case AV_CODEC_ID_VORBIS: |
| 276 | first_header_size = 30; |
| 277 | break; |
| 278 | default: |
| 279 | av_log(c, AV_LOG_ERROR, "Unsupported Xiph codec ID\n"); |
| 280 | return NULL; |
| 281 | } |
| 282 | |
| 283 | if (avpriv_split_xiph_headers(c->extradata, c->extradata_size, |
| 284 | first_header_size, header_start, |
| 285 | header_len) < 0) { |
| 286 | av_log(c, AV_LOG_ERROR, "Extradata corrupt.\n"); |
| 287 | return NULL; |
| 288 | } |
| 289 | |
| 290 | headers_len = header_len[0] + header_len[2]; |
| 291 | config_len = 4 + // count |
| 292 | 3 + // ident |
| 293 | 2 + // packet size |
| 294 | 1 + // header count |
| 295 | 2 + // header size |
| 296 | headers_len; // and the rest |
| 297 | |
| 298 | config = av_malloc(config_len); |
| 299 | if (!config) |
| 300 | goto xiph_fail; |
| 301 | |
| 302 | encoded_config = av_malloc(AV_BASE64_SIZE(config_len)); |
| 303 | if (!encoded_config) { |
| 304 | av_free(config); |
| 305 | goto xiph_fail; |
| 306 | } |
| 307 | |
| 308 | config[0] = config[1] = config[2] = 0; |
| 309 | config[3] = 1; |
| 310 | config[4] = (RTP_XIPH_IDENT >> 16) & 0xff; |
| 311 | config[5] = (RTP_XIPH_IDENT >> 8) & 0xff; |
| 312 | config[6] = (RTP_XIPH_IDENT ) & 0xff; |
| 313 | config[7] = (headers_len >> 8) & 0xff; |
| 314 | config[8] = headers_len & 0xff; |
| 315 | config[9] = 2; |
| 316 | config[10] = header_len[0]; |
| 317 | config[11] = 0; // size of comment header; nonexistent |
| 318 | memcpy(config + 12, header_start[0], header_len[0]); |
| 319 | memcpy(config + 12 + header_len[0], header_start[2], header_len[2]); |
| 320 | |
| 321 | av_base64_encode(encoded_config, AV_BASE64_SIZE(config_len), |
| 322 | config, config_len); |
| 323 | av_free(config); |
| 324 | |
| 325 | return encoded_config; |
| 326 | |
| 327 | xiph_fail: |
| 328 | av_log(c, AV_LOG_ERROR, |
| 329 | "Not enough memory for configuration string\n"); |
| 330 | return NULL; |
| 331 | } |
| 332 | |
| 333 | static int latm_context2profilelevel(AVCodecContext *c) |
| 334 | { |
| 335 | /* MP4A-LATM |
| 336 | * The RTP payload format specification is described in RFC 3016 |
| 337 | * The encoding specifications are provided in ISO/IEC 14496-3 */ |
| 338 | |
| 339 | int profile_level = 0x2B; |
| 340 | |
| 341 | /* TODO: AAC Profile only supports AAC LC Object Type. |
| 342 | * Different Object Types should implement different Profile Levels */ |
| 343 | |
| 344 | if (c->sample_rate <= 24000) { |
| 345 | if (c->channels <= 2) |
| 346 | profile_level = 0x28; // AAC Profile, Level 1 |
| 347 | } else if (c->sample_rate <= 48000) { |
| 348 | if (c->channels <= 2) { |
| 349 | profile_level = 0x29; // AAC Profile, Level 2 |
| 350 | } else if (c->channels <= 5) { |
| 351 | profile_level = 0x2A; // AAC Profile, Level 4 |
| 352 | } |
| 353 | } else if (c->sample_rate <= 96000) { |
| 354 | if (c->channels <= 5) { |
| 355 | profile_level = 0x2B; // AAC Profile, Level 5 |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | return profile_level; |
| 360 | } |
| 361 | |
| 362 | static char *latm_context2config(AVCodecContext *c) |
| 363 | { |
| 364 | /* MP4A-LATM |
| 365 | * The RTP payload format specification is described in RFC 3016 |
| 366 | * The encoding specifications are provided in ISO/IEC 14496-3 */ |
| 367 | |
| 368 | uint8_t config_byte[6]; |
| 369 | int rate_index; |
| 370 | char *config; |
| 371 | |
| 372 | for (rate_index = 0; rate_index < 16; rate_index++) |
| 373 | if (avpriv_mpeg4audio_sample_rates[rate_index] == c->sample_rate) |
| 374 | break; |
| 375 | if (rate_index == 16) { |
| 376 | av_log(c, AV_LOG_ERROR, "Unsupported sample rate\n"); |
| 377 | return NULL; |
| 378 | } |
| 379 | |
| 380 | config_byte[0] = 0x40; |
| 381 | config_byte[1] = 0; |
| 382 | config_byte[2] = 0x20 | rate_index; |
| 383 | config_byte[3] = c->channels << 4; |
| 384 | config_byte[4] = 0x3f; |
| 385 | config_byte[5] = 0xc0; |
| 386 | |
| 387 | config = av_malloc(6*2+1); |
| 388 | if (!config) { |
| 389 | av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n"); |
| 390 | return NULL; |
| 391 | } |
| 392 | ff_data_to_hex(config, config_byte, 6, 1); |
| 393 | config[12] = 0; |
| 394 | |
| 395 | return config; |
| 396 | } |
| 397 | |
| 398 | static char *sdp_write_media_attributes(char *buff, int size, AVCodecContext *c, int payload_type, AVFormatContext *fmt) |
| 399 | { |
| 400 | char *config = NULL; |
| 401 | |
| 402 | switch (c->codec_id) { |
| 403 | case AV_CODEC_ID_H264: { |
| 404 | int mode = 1; |
| 405 | if (fmt && fmt->oformat && fmt->oformat->priv_class && |
| 406 | av_opt_flag_is_set(fmt->priv_data, "rtpflags", "h264_mode0")) |
| 407 | mode = 0; |
| 408 | if (c->extradata_size) { |
| 409 | config = extradata2psets(c); |
| 410 | } |
| 411 | av_strlcatf(buff, size, "a=rtpmap:%d H264/90000\r\n" |
| 412 | "a=fmtp:%d packetization-mode=%d%s\r\n", |
| 413 | payload_type, |
| 414 | payload_type, mode, config ? config : ""); |
| 415 | break; |
| 416 | } |
| 417 | case AV_CODEC_ID_H261: |
| 418 | { |
| 419 | const char *pic_fmt = NULL; |
| 420 | /* only QCIF and CIF are specified as supported in RFC 4587 */ |
| 421 | if (c->width == 176 && c->height == 144) |
| 422 | pic_fmt = "QCIF=1"; |
| 423 | if (c->width == 352 && c->height == 288) |
| 424 | pic_fmt = "CIF=1"; |
| 425 | av_strlcatf(buff, size, "a=rtpmap:%d H261/90000\r\n", payload_type); |
| 426 | if (pic_fmt) |
| 427 | av_strlcatf(buff, size, "a=fmtp:%d %s\r\n", payload_type, pic_fmt); |
| 428 | break; |
| 429 | } |
| 430 | case AV_CODEC_ID_H263: |
| 431 | case AV_CODEC_ID_H263P: |
| 432 | /* a=framesize is required by 3GPP TS 26.234 (PSS). It |
| 433 | * actually specifies the maximum video size, but we only know |
| 434 | * the current size. This is required for playback on Android |
| 435 | * stagefright and on Samsung bada. */ |
| 436 | if (!fmt || !fmt->oformat->priv_class || |
| 437 | !av_opt_flag_is_set(fmt->priv_data, "rtpflags", "rfc2190") || |
| 438 | c->codec_id == AV_CODEC_ID_H263P) |
| 439 | av_strlcatf(buff, size, "a=rtpmap:%d H263-2000/90000\r\n" |
| 440 | "a=framesize:%d %d-%d\r\n", |
| 441 | payload_type, |
| 442 | payload_type, c->width, c->height); |
| 443 | break; |
| 444 | case AV_CODEC_ID_MPEG4: |
| 445 | if (c->extradata_size) { |
| 446 | config = extradata2config(c); |
| 447 | } |
| 448 | av_strlcatf(buff, size, "a=rtpmap:%d MP4V-ES/90000\r\n" |
| 449 | "a=fmtp:%d profile-level-id=1%s\r\n", |
| 450 | payload_type, |
| 451 | payload_type, config ? config : ""); |
| 452 | break; |
| 453 | case AV_CODEC_ID_AAC: |
| 454 | if (fmt && fmt->oformat && fmt->oformat->priv_class && |
| 455 | av_opt_flag_is_set(fmt->priv_data, "rtpflags", "latm")) { |
| 456 | config = latm_context2config(c); |
| 457 | if (!config) |
| 458 | return NULL; |
| 459 | av_strlcatf(buff, size, "a=rtpmap:%d MP4A-LATM/%d/%d\r\n" |
| 460 | "a=fmtp:%d profile-level-id=%d;cpresent=0;config=%s\r\n", |
| 461 | payload_type, c->sample_rate, c->channels, |
| 462 | payload_type, latm_context2profilelevel(c), config); |
| 463 | } else { |
| 464 | if (c->extradata_size) { |
| 465 | config = extradata2config(c); |
| 466 | } else { |
| 467 | /* FIXME: maybe we can forge config information based on the |
| 468 | * codec parameters... |
| 469 | */ |
| 470 | av_log(c, AV_LOG_ERROR, "AAC with no global headers is currently not supported.\n"); |
| 471 | return NULL; |
| 472 | } |
| 473 | if (!config) { |
| 474 | return NULL; |
| 475 | } |
| 476 | av_strlcatf(buff, size, "a=rtpmap:%d MPEG4-GENERIC/%d/%d\r\n" |
| 477 | "a=fmtp:%d profile-level-id=1;" |
| 478 | "mode=AAC-hbr;sizelength=13;indexlength=3;" |
| 479 | "indexdeltalength=3%s\r\n", |
| 480 | payload_type, c->sample_rate, c->channels, |
| 481 | payload_type, config); |
| 482 | } |
| 483 | break; |
| 484 | case AV_CODEC_ID_PCM_S16BE: |
| 485 | if (payload_type >= RTP_PT_PRIVATE) |
| 486 | av_strlcatf(buff, size, "a=rtpmap:%d L16/%d/%d\r\n", |
| 487 | payload_type, |
| 488 | c->sample_rate, c->channels); |
| 489 | break; |
| 490 | case AV_CODEC_ID_PCM_MULAW: |
| 491 | if (payload_type >= RTP_PT_PRIVATE) |
| 492 | av_strlcatf(buff, size, "a=rtpmap:%d PCMU/%d/%d\r\n", |
| 493 | payload_type, |
| 494 | c->sample_rate, c->channels); |
| 495 | break; |
| 496 | case AV_CODEC_ID_PCM_ALAW: |
| 497 | if (payload_type >= RTP_PT_PRIVATE) |
| 498 | av_strlcatf(buff, size, "a=rtpmap:%d PCMA/%d/%d\r\n", |
| 499 | payload_type, |
| 500 | c->sample_rate, c->channels); |
| 501 | break; |
| 502 | case AV_CODEC_ID_AMR_NB: |
| 503 | av_strlcatf(buff, size, "a=rtpmap:%d AMR/%d/%d\r\n" |
| 504 | "a=fmtp:%d octet-align=1\r\n", |
| 505 | payload_type, c->sample_rate, c->channels, |
| 506 | payload_type); |
| 507 | break; |
| 508 | case AV_CODEC_ID_AMR_WB: |
| 509 | av_strlcatf(buff, size, "a=rtpmap:%d AMR-WB/%d/%d\r\n" |
| 510 | "a=fmtp:%d octet-align=1\r\n", |
| 511 | payload_type, c->sample_rate, c->channels, |
| 512 | payload_type); |
| 513 | break; |
| 514 | case AV_CODEC_ID_VORBIS: |
| 515 | if (c->extradata_size) |
| 516 | config = xiph_extradata2config(c); |
| 517 | else |
| 518 | av_log(c, AV_LOG_ERROR, "Vorbis configuration info missing\n"); |
| 519 | if (!config) |
| 520 | return NULL; |
| 521 | |
| 522 | av_strlcatf(buff, size, "a=rtpmap:%d vorbis/%d/%d\r\n" |
| 523 | "a=fmtp:%d configuration=%s\r\n", |
| 524 | payload_type, c->sample_rate, c->channels, |
| 525 | payload_type, config); |
| 526 | break; |
| 527 | case AV_CODEC_ID_THEORA: { |
| 528 | const char *pix_fmt; |
| 529 | switch (c->pix_fmt) { |
| 530 | case AV_PIX_FMT_YUV420P: |
| 531 | pix_fmt = "YCbCr-4:2:0"; |
| 532 | break; |
| 533 | case AV_PIX_FMT_YUV422P: |
| 534 | pix_fmt = "YCbCr-4:2:2"; |
| 535 | break; |
| 536 | case AV_PIX_FMT_YUV444P: |
| 537 | pix_fmt = "YCbCr-4:4:4"; |
| 538 | break; |
| 539 | default: |
| 540 | av_log(c, AV_LOG_ERROR, "Unsupported pixel format.\n"); |
| 541 | return NULL; |
| 542 | } |
| 543 | |
| 544 | if (c->extradata_size) |
| 545 | config = xiph_extradata2config(c); |
| 546 | else |
| 547 | av_log(c, AV_LOG_ERROR, "Theora configuation info missing\n"); |
| 548 | if (!config) |
| 549 | return NULL; |
| 550 | |
| 551 | av_strlcatf(buff, size, "a=rtpmap:%d theora/90000\r\n" |
| 552 | "a=fmtp:%d delivery-method=inline; " |
| 553 | "width=%d; height=%d; sampling=%s; " |
| 554 | "configuration=%s\r\n", |
| 555 | payload_type, payload_type, |
| 556 | c->width, c->height, pix_fmt, config); |
| 557 | break; |
| 558 | } |
| 559 | case AV_CODEC_ID_VP8: |
| 560 | av_strlcatf(buff, size, "a=rtpmap:%d VP8/90000\r\n", |
| 561 | payload_type); |
| 562 | break; |
| 563 | case AV_CODEC_ID_MJPEG: |
| 564 | if (payload_type >= RTP_PT_PRIVATE) |
| 565 | av_strlcatf(buff, size, "a=rtpmap:%d JPEG/90000\r\n", |
| 566 | payload_type); |
| 567 | break; |
| 568 | case AV_CODEC_ID_ADPCM_G722: |
| 569 | if (payload_type >= RTP_PT_PRIVATE) |
| 570 | av_strlcatf(buff, size, "a=rtpmap:%d G722/%d/%d\r\n", |
| 571 | payload_type, |
| 572 | 8000, c->channels); |
| 573 | break; |
| 574 | case AV_CODEC_ID_ADPCM_G726: { |
| 575 | if (payload_type >= RTP_PT_PRIVATE) |
| 576 | av_strlcatf(buff, size, "a=rtpmap:%d G726-%d/%d\r\n", |
| 577 | payload_type, |
| 578 | c->bits_per_coded_sample*8, |
| 579 | c->sample_rate); |
| 580 | break; |
| 581 | } |
| 582 | case AV_CODEC_ID_ILBC: |
| 583 | av_strlcatf(buff, size, "a=rtpmap:%d iLBC/%d\r\n" |
| 584 | "a=fmtp:%d mode=%d\r\n", |
| 585 | payload_type, c->sample_rate, |
| 586 | payload_type, c->block_align == 38 ? 20 : 30); |
| 587 | break; |
| 588 | case AV_CODEC_ID_SPEEX: |
| 589 | av_strlcatf(buff, size, "a=rtpmap:%d speex/%d\r\n", |
| 590 | payload_type, c->sample_rate); |
| 591 | if (c->codec) { |
| 592 | const char *mode; |
| 593 | uint64_t vad_option; |
| 594 | |
| 595 | if (c->flags & CODEC_FLAG_QSCALE) |
| 596 | mode = "on"; |
| 597 | else if (!av_opt_get_int(c, "vad", AV_OPT_FLAG_ENCODING_PARAM, &vad_option) && vad_option) |
| 598 | mode = "vad"; |
| 599 | else |
| 600 | mode = "off"; |
| 601 | |
| 602 | av_strlcatf(buff, size, "a=fmtp:%d vbr=%s\r\n", |
| 603 | payload_type, mode); |
| 604 | } |
| 605 | break; |
| 606 | case AV_CODEC_ID_OPUS: |
| 607 | av_strlcatf(buff, size, "a=rtpmap:%d opus/48000\r\n", |
| 608 | payload_type); |
| 609 | break; |
| 610 | default: |
| 611 | /* Nothing special to do here... */ |
| 612 | break; |
| 613 | } |
| 614 | |
| 615 | av_free(config); |
| 616 | |
| 617 | return buff; |
| 618 | } |
| 619 | |
| 620 | void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx, |
| 621 | const char *dest_addr, const char *dest_type, |
| 622 | int port, int ttl, AVFormatContext *fmt) |
| 623 | { |
| 624 | AVCodecContext *c = st->codec; |
| 625 | const char *type; |
| 626 | int payload_type; |
| 627 | |
| 628 | payload_type = ff_rtp_get_payload_type(fmt, c, idx); |
| 629 | |
| 630 | switch (c->codec_type) { |
| 631 | case AVMEDIA_TYPE_VIDEO : type = "video" ; break; |
| 632 | case AVMEDIA_TYPE_AUDIO : type = "audio" ; break; |
| 633 | case AVMEDIA_TYPE_SUBTITLE: type = "text" ; break; |
| 634 | default : type = "application"; break; |
| 635 | } |
| 636 | |
| 637 | av_strlcatf(buff, size, "m=%s %d RTP/AVP %d\r\n", type, port, payload_type); |
| 638 | sdp_write_address(buff, size, dest_addr, dest_type, ttl); |
| 639 | if (c->bit_rate) { |
| 640 | av_strlcatf(buff, size, "b=AS:%d\r\n", c->bit_rate / 1000); |
| 641 | } |
| 642 | |
| 643 | sdp_write_media_attributes(buff, size, c, payload_type, fmt); |
| 644 | } |
| 645 | |
| 646 | int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size) |
| 647 | { |
| 648 | AVDictionaryEntry *title = av_dict_get(ac[0]->metadata, "title", NULL, 0); |
| 649 | struct sdp_session_level s = { 0 }; |
| 650 | int i, j, port, ttl, is_multicast, index = 0; |
| 651 | char dst[32], dst_type[5]; |
| 652 | |
| 653 | memset(buf, 0, size); |
| 654 | s.user = "-"; |
| 655 | s.src_addr = "127.0.0.1"; /* FIXME: Properly set this */ |
| 656 | s.src_type = "IP4"; |
| 657 | s.name = title ? title->value : "No Name"; |
| 658 | |
| 659 | port = 0; |
| 660 | ttl = 0; |
| 661 | if (n_files == 1) { |
| 662 | port = sdp_get_address(dst, sizeof(dst), &ttl, ac[0]->filename); |
| 663 | is_multicast = resolve_destination(dst, sizeof(dst), dst_type, |
| 664 | sizeof(dst_type)); |
| 665 | if (!is_multicast) |
| 666 | ttl = 0; |
| 667 | if (dst[0]) { |
| 668 | s.dst_addr = dst; |
| 669 | s.dst_type = dst_type; |
| 670 | s.ttl = ttl; |
| 671 | if (!strcmp(dst_type, "IP6")) { |
| 672 | s.src_addr = "::1"; |
| 673 | s.src_type = "IP6"; |
| 674 | } |
| 675 | } |
| 676 | } |
| 677 | sdp_write_header(buf, size, &s); |
| 678 | |
| 679 | dst[0] = 0; |
| 680 | for (i = 0; i < n_files; i++) { |
| 681 | if (n_files != 1) { |
| 682 | port = sdp_get_address(dst, sizeof(dst), &ttl, ac[i]->filename); |
| 683 | is_multicast = resolve_destination(dst, sizeof(dst), dst_type, |
| 684 | sizeof(dst_type)); |
| 685 | if (!is_multicast) |
| 686 | ttl = 0; |
| 687 | } |
| 688 | for (j = 0; j < ac[i]->nb_streams; j++) { |
| 689 | ff_sdp_write_media(buf, size, ac[i]->streams[j], index++, |
| 690 | dst[0] ? dst : NULL, dst_type, |
| 691 | (port > 0) ? port + j * 2 : 0, |
| 692 | ttl, ac[i]); |
| 693 | if (port <= 0) { |
| 694 | av_strlcatf(buf, size, |
| 695 | "a=control:streamid=%d\r\n", i + j); |
| 696 | } |
| 697 | if (ac[i]->pb && ac[i]->pb->av_class) { |
| 698 | uint8_t *crypto_suite = NULL, *crypto_params = NULL; |
| 699 | av_opt_get(ac[i]->pb, "srtp_out_suite", AV_OPT_SEARCH_CHILDREN, |
| 700 | &crypto_suite); |
| 701 | av_opt_get(ac[i]->pb, "srtp_out_params", AV_OPT_SEARCH_CHILDREN, |
| 702 | &crypto_params); |
| 703 | if (crypto_suite && crypto_suite[0]) |
| 704 | av_strlcatf(buf, size, |
| 705 | "a=crypto:1 %s inline:%s\r\n", |
| 706 | crypto_suite, crypto_params); |
| 707 | av_free(crypto_suite); |
| 708 | av_free(crypto_params); |
| 709 | } |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | return 0; |
| 714 | } |
| 715 | #else |
| 716 | int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size) |
| 717 | { |
| 718 | return AVERROR(ENOSYS); |
| 719 | } |
| 720 | |
| 721 | void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx, |
| 722 | const char *dest_addr, const char *dest_type, |
| 723 | int port, int ttl, AVFormatContext *fmt) |
| 724 | { |
| 725 | } |
| 726 | #endif |