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| 1 /* | |
| 2 * libjingle | |
| 3 * Copyright 2004 Google Inc. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright notice, | |
| 9 * this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 11 * this list of conditions and the following disclaimer in the documentation | |
| 12 * and/or other materials provided with the distribution. | |
| 13 * 3. The name of the author may not be used to endorse or promote products | |
| 14 * derived from this software without specific prior written permission. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
| 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
| 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
| 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
| 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
| 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 // Types and classes used in media session descriptions. | |
| 29 | |
| 30 #ifndef TALK_SESSION_MEDIA_MEDIASESSION_H_ | |
| 31 #define TALK_SESSION_MEDIA_MEDIASESSION_H_ | |
| 32 | |
| 33 #include <algorithm> | |
| 34 #include <string> | |
| 35 #include <vector> | |
| 36 | |
| 37 #include "webrtc/base/scoped_ptr.h" | |
| 38 #include "webrtc/media/base/codec.h" | |
| 39 #include "webrtc/media/base/constants.h" | |
| 40 #include "webrtc/media/base/cryptoparams.h" | |
| 41 #include "webrtc/media/base/mediachannel.h" | |
| 42 #include "webrtc/media/base/mediaengine.h" // For DataChannelType | |
| 43 #include "webrtc/media/base/streamparams.h" | |
| 44 #include "webrtc/p2p/base/sessiondescription.h" | |
| 45 #include "webrtc/p2p/base/transport.h" | |
| 46 #include "webrtc/p2p/base/transportdescriptionfactory.h" | |
| 47 | |
| 48 namespace cricket { | |
| 49 | |
| 50 class ChannelManager; | |
| 51 typedef std::vector<AudioCodec> AudioCodecs; | |
| 52 typedef std::vector<VideoCodec> VideoCodecs; | |
| 53 typedef std::vector<DataCodec> DataCodecs; | |
| 54 typedef std::vector<CryptoParams> CryptoParamsVec; | |
| 55 typedef std::vector<RtpHeaderExtension> RtpHeaderExtensions; | |
| 56 | |
| 57 enum MediaType { | |
| 58 MEDIA_TYPE_AUDIO, | |
| 59 MEDIA_TYPE_VIDEO, | |
| 60 MEDIA_TYPE_DATA | |
| 61 }; | |
| 62 | |
| 63 std::string MediaTypeToString(MediaType type); | |
| 64 | |
| 65 enum MediaContentDirection { | |
| 66 MD_INACTIVE, | |
| 67 MD_SENDONLY, | |
| 68 MD_RECVONLY, | |
| 69 MD_SENDRECV | |
| 70 }; | |
| 71 | |
| 72 enum CryptoType { | |
| 73 CT_NONE, | |
| 74 CT_SDES, | |
| 75 CT_DTLS | |
| 76 }; | |
| 77 | |
| 78 // RTC4585 RTP/AVPF | |
| 79 extern const char kMediaProtocolAvpf[]; | |
| 80 // RFC5124 RTP/SAVPF | |
| 81 extern const char kMediaProtocolSavpf[]; | |
| 82 | |
| 83 extern const char kMediaProtocolDtlsSavpf[]; | |
| 84 | |
| 85 extern const char kMediaProtocolRtpPrefix[]; | |
| 86 | |
| 87 extern const char kMediaProtocolSctp[]; | |
| 88 extern const char kMediaProtocolDtlsSctp[]; | |
| 89 extern const char kMediaProtocolUdpDtlsSctp[]; | |
| 90 extern const char kMediaProtocolTcpDtlsSctp[]; | |
| 91 | |
| 92 // Options to control how session descriptions are generated. | |
| 93 const int kAutoBandwidth = -1; | |
| 94 const int kBufferedModeDisabled = 0; | |
| 95 | |
| 96 struct MediaSessionOptions { | |
| 97 MediaSessionOptions() : | |
| 98 recv_audio(true), | |
| 99 recv_video(false), | |
| 100 data_channel_type(DCT_NONE), | |
| 101 is_muc(false), | |
| 102 vad_enabled(true), // When disabled, removes all CN codecs from SDP. | |
| 103 rtcp_mux_enabled(true), | |
| 104 bundle_enabled(false), | |
| 105 video_bandwidth(kAutoBandwidth), | |
| 106 data_bandwidth(kDataMaxBandwidth) { | |
| 107 } | |
| 108 | |
| 109 bool has_audio() const { | |
| 110 return recv_audio || HasSendMediaStream(MEDIA_TYPE_AUDIO); | |
| 111 } | |
| 112 bool has_video() const { | |
| 113 return recv_video || HasSendMediaStream(MEDIA_TYPE_VIDEO); | |
| 114 } | |
| 115 bool has_data() const { return data_channel_type != DCT_NONE; } | |
| 116 | |
| 117 // Add a stream with MediaType type and id. | |
| 118 // All streams with the same sync_label will get the same CNAME. | |
| 119 // All ids must be unique. | |
| 120 void AddSendStream(MediaType type, | |
| 121 const std::string& id, | |
| 122 const std::string& sync_label); | |
| 123 void AddSendVideoStream(const std::string& id, | |
| 124 const std::string& sync_label, | |
| 125 int num_sim_layers); | |
| 126 void RemoveSendStream(MediaType type, const std::string& id); | |
| 127 | |
| 128 | |
| 129 // Helper function. | |
| 130 void AddSendStreamInternal(MediaType type, | |
| 131 const std::string& id, | |
| 132 const std::string& sync_label, | |
| 133 int num_sim_layers); | |
| 134 | |
| 135 bool HasSendMediaStream(MediaType type) const; | |
| 136 | |
| 137 // TODO(deadbeef): Put all the audio/video/data-specific options into a map | |
| 138 // structure (content name -> options). | |
| 139 // MediaSessionDescriptionFactory assumes there will never be more than one | |
| 140 // audio/video/data content, but this will change with unified plan. | |
| 141 bool recv_audio; | |
| 142 bool recv_video; | |
| 143 DataChannelType data_channel_type; | |
| 144 bool is_muc; | |
| 145 bool vad_enabled; | |
| 146 bool rtcp_mux_enabled; | |
| 147 bool bundle_enabled; | |
| 148 // bps. -1 == auto. | |
| 149 int video_bandwidth; | |
| 150 int data_bandwidth; | |
| 151 TransportOptions audio_transport_options; | |
| 152 TransportOptions video_transport_options; | |
| 153 TransportOptions data_transport_options; | |
| 154 | |
| 155 struct Stream { | |
| 156 Stream(MediaType type, | |
| 157 const std::string& id, | |
| 158 const std::string& sync_label, | |
| 159 int num_sim_layers) | |
| 160 : type(type), id(id), sync_label(sync_label), | |
| 161 num_sim_layers(num_sim_layers) { | |
| 162 } | |
| 163 MediaType type; | |
| 164 std::string id; | |
| 165 std::string sync_label; | |
| 166 int num_sim_layers; | |
| 167 }; | |
| 168 | |
| 169 typedef std::vector<Stream> Streams; | |
| 170 Streams streams; | |
| 171 }; | |
| 172 | |
| 173 // "content" (as used in XEP-0166) descriptions for voice and video. | |
| 174 class MediaContentDescription : public ContentDescription { | |
| 175 public: | |
| 176 MediaContentDescription() {} | |
| 177 | |
| 178 virtual MediaType type() const = 0; | |
| 179 virtual bool has_codecs() const = 0; | |
| 180 | |
| 181 // |protocol| is the expected media transport protocol, such as RTP/AVPF, | |
| 182 // RTP/SAVPF or SCTP/DTLS. | |
| 183 std::string protocol() const { return protocol_; } | |
| 184 void set_protocol(const std::string& protocol) { protocol_ = protocol; } | |
| 185 | |
| 186 MediaContentDirection direction() const { return direction_; } | |
| 187 void set_direction(MediaContentDirection direction) { | |
| 188 direction_ = direction; | |
| 189 } | |
| 190 | |
| 191 bool rtcp_mux() const { return rtcp_mux_; } | |
| 192 void set_rtcp_mux(bool mux) { rtcp_mux_ = mux; } | |
| 193 | |
| 194 bool rtcp_reduced_size() const { return rtcp_reduced_size_; } | |
| 195 void set_rtcp_reduced_size(bool reduced_size) { | |
| 196 rtcp_reduced_size_ = reduced_size; | |
| 197 } | |
| 198 | |
| 199 int bandwidth() const { return bandwidth_; } | |
| 200 void set_bandwidth(int bandwidth) { bandwidth_ = bandwidth; } | |
| 201 | |
| 202 const std::vector<CryptoParams>& cryptos() const { return cryptos_; } | |
| 203 void AddCrypto(const CryptoParams& params) { | |
| 204 cryptos_.push_back(params); | |
| 205 } | |
| 206 void set_cryptos(const std::vector<CryptoParams>& cryptos) { | |
| 207 cryptos_ = cryptos; | |
| 208 } | |
| 209 | |
| 210 CryptoType crypto_required() const { return crypto_required_; } | |
| 211 void set_crypto_required(CryptoType type) { | |
| 212 crypto_required_ = type; | |
| 213 } | |
| 214 | |
| 215 const RtpHeaderExtensions& rtp_header_extensions() const { | |
| 216 return rtp_header_extensions_; | |
| 217 } | |
| 218 void set_rtp_header_extensions(const RtpHeaderExtensions& extensions) { | |
| 219 rtp_header_extensions_ = extensions; | |
| 220 rtp_header_extensions_set_ = true; | |
| 221 } | |
| 222 void AddRtpHeaderExtension(const RtpHeaderExtension& ext) { | |
| 223 rtp_header_extensions_.push_back(ext); | |
| 224 rtp_header_extensions_set_ = true; | |
| 225 } | |
| 226 void ClearRtpHeaderExtensions() { | |
| 227 rtp_header_extensions_.clear(); | |
| 228 rtp_header_extensions_set_ = true; | |
| 229 } | |
| 230 // We can't always tell if an empty list of header extensions is | |
| 231 // because the other side doesn't support them, or just isn't hooked up to | |
| 232 // signal them. For now we assume an empty list means no signaling, but | |
| 233 // provide the ClearRtpHeaderExtensions method to allow "no support" to be | |
| 234 // clearly indicated (i.e. when derived from other information). | |
| 235 bool rtp_header_extensions_set() const { | |
| 236 return rtp_header_extensions_set_; | |
| 237 } | |
| 238 // True iff the client supports multiple streams. | |
| 239 void set_multistream(bool multistream) { multistream_ = multistream; } | |
| 240 bool multistream() const { return multistream_; } | |
| 241 const StreamParamsVec& streams() const { | |
| 242 return streams_; | |
| 243 } | |
| 244 // TODO(pthatcher): Remove this by giving mediamessage.cc access | |
| 245 // to MediaContentDescription | |
| 246 StreamParamsVec& mutable_streams() { | |
| 247 return streams_; | |
| 248 } | |
| 249 void AddStream(const StreamParams& stream) { | |
| 250 streams_.push_back(stream); | |
| 251 } | |
| 252 // Legacy streams have an ssrc, but nothing else. | |
| 253 void AddLegacyStream(uint32_t ssrc) { | |
| 254 streams_.push_back(StreamParams::CreateLegacy(ssrc)); | |
| 255 } | |
| 256 void AddLegacyStream(uint32_t ssrc, uint32_t fid_ssrc) { | |
| 257 StreamParams sp = StreamParams::CreateLegacy(ssrc); | |
| 258 sp.AddFidSsrc(ssrc, fid_ssrc); | |
| 259 streams_.push_back(sp); | |
| 260 } | |
| 261 // Sets the CNAME of all StreamParams if it have not been set. | |
| 262 // This can be used to set the CNAME of legacy streams. | |
| 263 void SetCnameIfEmpty(const std::string& cname) { | |
| 264 for (cricket::StreamParamsVec::iterator it = streams_.begin(); | |
| 265 it != streams_.end(); ++it) { | |
| 266 if (it->cname.empty()) | |
| 267 it->cname = cname; | |
| 268 } | |
| 269 } | |
| 270 uint32_t first_ssrc() const { | |
| 271 if (streams_.empty()) { | |
| 272 return 0; | |
| 273 } | |
| 274 return streams_[0].first_ssrc(); | |
| 275 } | |
| 276 bool has_ssrcs() const { | |
| 277 if (streams_.empty()) { | |
| 278 return false; | |
| 279 } | |
| 280 return streams_[0].has_ssrcs(); | |
| 281 } | |
| 282 | |
| 283 void set_conference_mode(bool enable) { conference_mode_ = enable; } | |
| 284 bool conference_mode() const { return conference_mode_; } | |
| 285 | |
| 286 void set_partial(bool partial) { partial_ = partial; } | |
| 287 bool partial() const { return partial_; } | |
| 288 | |
| 289 void set_buffered_mode_latency(int latency) { | |
| 290 buffered_mode_latency_ = latency; | |
| 291 } | |
| 292 int buffered_mode_latency() const { return buffered_mode_latency_; } | |
| 293 | |
| 294 protected: | |
| 295 bool rtcp_mux_ = false; | |
| 296 bool rtcp_reduced_size_ = false; | |
| 297 int bandwidth_ = kAutoBandwidth; | |
| 298 std::string protocol_; | |
| 299 std::vector<CryptoParams> cryptos_; | |
| 300 CryptoType crypto_required_ = CT_NONE; | |
| 301 std::vector<RtpHeaderExtension> rtp_header_extensions_; | |
| 302 bool rtp_header_extensions_set_ = false; | |
| 303 bool multistream_ = false; | |
| 304 StreamParamsVec streams_; | |
| 305 bool conference_mode_ = false; | |
| 306 bool partial_ = false; | |
| 307 int buffered_mode_latency_ = kBufferedModeDisabled; | |
| 308 MediaContentDirection direction_ = MD_SENDRECV; | |
| 309 }; | |
| 310 | |
| 311 template <class C> | |
| 312 class MediaContentDescriptionImpl : public MediaContentDescription { | |
| 313 public: | |
| 314 struct PreferenceSort { | |
| 315 bool operator()(C a, C b) { return a.preference > b.preference; } | |
| 316 }; | |
| 317 | |
| 318 const std::vector<C>& codecs() const { return codecs_; } | |
| 319 void set_codecs(const std::vector<C>& codecs) { codecs_ = codecs; } | |
| 320 virtual bool has_codecs() const { return !codecs_.empty(); } | |
| 321 bool HasCodec(int id) { | |
| 322 bool found = false; | |
| 323 for (typename std::vector<C>::iterator iter = codecs_.begin(); | |
| 324 iter != codecs_.end(); ++iter) { | |
| 325 if (iter->id == id) { | |
| 326 found = true; | |
| 327 break; | |
| 328 } | |
| 329 } | |
| 330 return found; | |
| 331 } | |
| 332 void AddCodec(const C& codec) { | |
| 333 codecs_.push_back(codec); | |
| 334 } | |
| 335 void AddOrReplaceCodec(const C& codec) { | |
| 336 for (typename std::vector<C>::iterator iter = codecs_.begin(); | |
| 337 iter != codecs_.end(); ++iter) { | |
| 338 if (iter->id == codec.id) { | |
| 339 *iter = codec; | |
| 340 return; | |
| 341 } | |
| 342 } | |
| 343 AddCodec(codec); | |
| 344 } | |
| 345 void AddCodecs(const std::vector<C>& codecs) { | |
| 346 typename std::vector<C>::const_iterator codec; | |
| 347 for (codec = codecs.begin(); codec != codecs.end(); ++codec) { | |
| 348 AddCodec(*codec); | |
| 349 } | |
| 350 } | |
| 351 void SortCodecs() { | |
| 352 std::sort(codecs_.begin(), codecs_.end(), PreferenceSort()); | |
| 353 } | |
| 354 | |
| 355 private: | |
| 356 std::vector<C> codecs_; | |
| 357 }; | |
| 358 | |
| 359 class AudioContentDescription : public MediaContentDescriptionImpl<AudioCodec> { | |
| 360 public: | |
| 361 AudioContentDescription() : | |
| 362 agc_minus_10db_(false) {} | |
| 363 | |
| 364 virtual ContentDescription* Copy() const { | |
| 365 return new AudioContentDescription(*this); | |
| 366 } | |
| 367 virtual MediaType type() const { return MEDIA_TYPE_AUDIO; } | |
| 368 | |
| 369 const std::string &lang() const { return lang_; } | |
| 370 void set_lang(const std::string &lang) { lang_ = lang; } | |
| 371 | |
| 372 bool agc_minus_10db() const { return agc_minus_10db_; } | |
| 373 void set_agc_minus_10db(bool enable) { | |
| 374 agc_minus_10db_ = enable; | |
| 375 } | |
| 376 | |
| 377 private: | |
| 378 bool agc_minus_10db_; | |
| 379 | |
| 380 private: | |
| 381 std::string lang_; | |
| 382 }; | |
| 383 | |
| 384 class VideoContentDescription : public MediaContentDescriptionImpl<VideoCodec> { | |
| 385 public: | |
| 386 virtual ContentDescription* Copy() const { | |
| 387 return new VideoContentDescription(*this); | |
| 388 } | |
| 389 virtual MediaType type() const { return MEDIA_TYPE_VIDEO; } | |
| 390 }; | |
| 391 | |
| 392 class DataContentDescription : public MediaContentDescriptionImpl<DataCodec> { | |
| 393 public: | |
| 394 virtual ContentDescription* Copy() const { | |
| 395 return new DataContentDescription(*this); | |
| 396 } | |
| 397 virtual MediaType type() const { return MEDIA_TYPE_DATA; } | |
| 398 }; | |
| 399 | |
| 400 // Creates media session descriptions according to the supplied codecs and | |
| 401 // other fields, as well as the supplied per-call options. | |
| 402 // When creating answers, performs the appropriate negotiation | |
| 403 // of the various fields to determine the proper result. | |
| 404 class MediaSessionDescriptionFactory { | |
| 405 public: | |
| 406 // Default ctor; use methods below to set configuration. | |
| 407 // The TransportDescriptionFactory is not owned by MediaSessionDescFactory, | |
| 408 // so it must be kept alive by the user of this class. | |
| 409 explicit MediaSessionDescriptionFactory( | |
| 410 const TransportDescriptionFactory* factory); | |
| 411 // This helper automatically sets up the factory to get its configuration | |
| 412 // from the specified ChannelManager. | |
| 413 MediaSessionDescriptionFactory(ChannelManager* cmanager, | |
| 414 const TransportDescriptionFactory* factory); | |
| 415 | |
| 416 const AudioCodecs& audio_codecs() const { return audio_codecs_; } | |
| 417 void set_audio_codecs(const AudioCodecs& codecs) { audio_codecs_ = codecs; } | |
| 418 void set_audio_rtp_header_extensions(const RtpHeaderExtensions& extensions) { | |
| 419 audio_rtp_extensions_ = extensions; | |
| 420 } | |
| 421 const RtpHeaderExtensions& audio_rtp_header_extensions() const { | |
| 422 return audio_rtp_extensions_; | |
| 423 } | |
| 424 const VideoCodecs& video_codecs() const { return video_codecs_; } | |
| 425 void set_video_codecs(const VideoCodecs& codecs) { video_codecs_ = codecs; } | |
| 426 void set_video_rtp_header_extensions(const RtpHeaderExtensions& extensions) { | |
| 427 video_rtp_extensions_ = extensions; | |
| 428 } | |
| 429 const RtpHeaderExtensions& video_rtp_header_extensions() const { | |
| 430 return video_rtp_extensions_; | |
| 431 } | |
| 432 const DataCodecs& data_codecs() const { return data_codecs_; } | |
| 433 void set_data_codecs(const DataCodecs& codecs) { data_codecs_ = codecs; } | |
| 434 SecurePolicy secure() const { return secure_; } | |
| 435 void set_secure(SecurePolicy s) { secure_ = s; } | |
| 436 // Decides if a StreamParams shall be added to the audio and video media | |
| 437 // content in SessionDescription when CreateOffer and CreateAnswer is called | |
| 438 // even if |options| don't include a Stream. This is needed to support legacy | |
| 439 // applications. |add_legacy_| is true per default. | |
| 440 void set_add_legacy_streams(bool add_legacy) { add_legacy_ = add_legacy; } | |
| 441 | |
| 442 SessionDescription* CreateOffer( | |
| 443 const MediaSessionOptions& options, | |
| 444 const SessionDescription* current_description) const; | |
| 445 SessionDescription* CreateAnswer( | |
| 446 const SessionDescription* offer, | |
| 447 const MediaSessionOptions& options, | |
| 448 const SessionDescription* current_description) const; | |
| 449 | |
| 450 private: | |
| 451 void GetCodecsToOffer(const SessionDescription* current_description, | |
| 452 AudioCodecs* audio_codecs, | |
| 453 VideoCodecs* video_codecs, | |
| 454 DataCodecs* data_codecs) const; | |
| 455 void GetRtpHdrExtsToOffer(const SessionDescription* current_description, | |
| 456 RtpHeaderExtensions* audio_extensions, | |
| 457 RtpHeaderExtensions* video_extensions) const; | |
| 458 bool AddTransportOffer( | |
| 459 const std::string& content_name, | |
| 460 const TransportOptions& transport_options, | |
| 461 const SessionDescription* current_desc, | |
| 462 SessionDescription* offer) const; | |
| 463 | |
| 464 TransportDescription* CreateTransportAnswer( | |
| 465 const std::string& content_name, | |
| 466 const SessionDescription* offer_desc, | |
| 467 const TransportOptions& transport_options, | |
| 468 const SessionDescription* current_desc) const; | |
| 469 | |
| 470 bool AddTransportAnswer( | |
| 471 const std::string& content_name, | |
| 472 const TransportDescription& transport_desc, | |
| 473 SessionDescription* answer_desc) const; | |
| 474 | |
| 475 // Helpers for adding media contents to the SessionDescription. Returns true | |
| 476 // it succeeds or the media content is not needed, or false if there is any | |
| 477 // error. | |
| 478 | |
| 479 bool AddAudioContentForOffer( | |
| 480 const MediaSessionOptions& options, | |
| 481 const SessionDescription* current_description, | |
| 482 const RtpHeaderExtensions& audio_rtp_extensions, | |
| 483 const AudioCodecs& audio_codecs, | |
| 484 StreamParamsVec* current_streams, | |
| 485 SessionDescription* desc) const; | |
| 486 | |
| 487 bool AddVideoContentForOffer( | |
| 488 const MediaSessionOptions& options, | |
| 489 const SessionDescription* current_description, | |
| 490 const RtpHeaderExtensions& video_rtp_extensions, | |
| 491 const VideoCodecs& video_codecs, | |
| 492 StreamParamsVec* current_streams, | |
| 493 SessionDescription* desc) const; | |
| 494 | |
| 495 bool AddDataContentForOffer( | |
| 496 const MediaSessionOptions& options, | |
| 497 const SessionDescription* current_description, | |
| 498 DataCodecs* data_codecs, | |
| 499 StreamParamsVec* current_streams, | |
| 500 SessionDescription* desc) const; | |
| 501 | |
| 502 bool AddAudioContentForAnswer( | |
| 503 const SessionDescription* offer, | |
| 504 const MediaSessionOptions& options, | |
| 505 const SessionDescription* current_description, | |
| 506 StreamParamsVec* current_streams, | |
| 507 SessionDescription* answer) const; | |
| 508 | |
| 509 bool AddVideoContentForAnswer( | |
| 510 const SessionDescription* offer, | |
| 511 const MediaSessionOptions& options, | |
| 512 const SessionDescription* current_description, | |
| 513 StreamParamsVec* current_streams, | |
| 514 SessionDescription* answer) const; | |
| 515 | |
| 516 bool AddDataContentForAnswer( | |
| 517 const SessionDescription* offer, | |
| 518 const MediaSessionOptions& options, | |
| 519 const SessionDescription* current_description, | |
| 520 StreamParamsVec* current_streams, | |
| 521 SessionDescription* answer) const; | |
| 522 | |
| 523 AudioCodecs audio_codecs_; | |
| 524 RtpHeaderExtensions audio_rtp_extensions_; | |
| 525 VideoCodecs video_codecs_; | |
| 526 RtpHeaderExtensions video_rtp_extensions_; | |
| 527 DataCodecs data_codecs_; | |
| 528 SecurePolicy secure_; | |
| 529 bool add_legacy_; | |
| 530 std::string lang_; | |
| 531 const TransportDescriptionFactory* transport_desc_factory_; | |
| 532 }; | |
| 533 | |
| 534 // Convenience functions. | |
| 535 bool IsMediaContent(const ContentInfo* content); | |
| 536 bool IsAudioContent(const ContentInfo* content); | |
| 537 bool IsVideoContent(const ContentInfo* content); | |
| 538 bool IsDataContent(const ContentInfo* content); | |
| 539 const ContentInfo* GetFirstAudioContent(const ContentInfos& contents); | |
| 540 const ContentInfo* GetFirstVideoContent(const ContentInfos& contents); | |
| 541 const ContentInfo* GetFirstDataContent(const ContentInfos& contents); | |
| 542 const ContentInfo* GetFirstAudioContent(const SessionDescription* sdesc); | |
| 543 const ContentInfo* GetFirstVideoContent(const SessionDescription* sdesc); | |
| 544 const ContentInfo* GetFirstDataContent(const SessionDescription* sdesc); | |
| 545 const AudioContentDescription* GetFirstAudioContentDescription( | |
| 546 const SessionDescription* sdesc); | |
| 547 const VideoContentDescription* GetFirstVideoContentDescription( | |
| 548 const SessionDescription* sdesc); | |
| 549 const DataContentDescription* GetFirstDataContentDescription( | |
| 550 const SessionDescription* sdesc); | |
| 551 | |
| 552 void GetSupportedAudioCryptoSuites(std::vector<int>* crypto_suites); | |
| 553 void GetSupportedVideoCryptoSuites(std::vector<int>* crypto_suites); | |
| 554 void GetSupportedDataCryptoSuites(std::vector<int>* crypto_suites); | |
| 555 void GetDefaultSrtpCryptoSuites(std::vector<int>* crypto_suites); | |
| 556 void GetSupportedAudioCryptoSuiteNames( | |
| 557 std::vector<std::string>* crypto_suite_names); | |
| 558 void GetSupportedVideoCryptoSuiteNames( | |
| 559 std::vector<std::string>* crypto_suite_names); | |
| 560 void GetSupportedDataCryptoSuiteNames( | |
| 561 std::vector<std::string>* crypto_suite_names); | |
| 562 void GetDefaultSrtpCryptoSuiteNames( | |
| 563 std::vector<std::string>* crypto_suite_names); | |
| 564 | |
| 565 } // namespace cricket | |
| 566 | |
| 567 #endif // TALK_SESSION_MEDIA_MEDIASESSION_H_ | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1691463002:
Move talk/session/media -> webrtc/pc (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc.git@master