1 /* 2 * libjingle 3 * Copyright 2014 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 #ifndef TALK_MEDIA_WEBRTC_SIMULCAST_H_ 29 #define TALK_MEDIA_WEBRTC_SIMULCAST_H_ 30 31 #include <vector> 32 33 #include "webrtc/base/basictypes.h" 34 #include "webrtc/config.h" 35 36 namespace cricket { 37 struct StreamParams; 38 39 // Config for use with screen cast when temporal layers are enabled. 40 struct ScreenshareLayerConfig { 41 public: 42 ScreenshareLayerConfig(int tl0_bitrate, int tl1_bitrate); 43 44 // Bitrates, for temporal layers 0 and 1. 45 int tl0_bitrate_kbps; 46 int tl1_bitrate_kbps; 47 48 static ScreenshareLayerConfig GetDefault(); 49 50 // Parse bitrate from group name on format "(tl0_bitrate)-(tl1_bitrate)", 51 // eg. "100-1000" for the default rates. 52 static bool FromFieldTrialGroup(const std::string& group, 53 ScreenshareLayerConfig* config); 54 }; 55 56 // TODO(pthatcher): Write unit tests just for these functions, 57 // independent of WebrtcVideoEngine. 58 59 int GetTotalMaxBitrateBps(const std::vector<webrtc::VideoStream>& streams); 60 61 // Get the ssrcs of the SIM group from the stream params. 62 void GetSimulcastSsrcs(const StreamParams& sp, std::vector<uint32_t>* ssrcs); 63 64 // Get simulcast settings. 65 std::vector<webrtc::VideoStream> GetSimulcastConfig(size_t max_streams, 66 int width, 67 int height, 68 int max_bitrate_bps, 69 int max_qp, 70 int max_framerate); 71 72 } // namespace cricket 73 74 #endif // TALK_MEDIA_WEBRTC_SIMULCAST_H_ 75