1 /* 2 * libjingle 3 * Copyright 2013 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_BASE_AUDIORENDERER_H_ 29 #define TALK_MEDIA_BASE_AUDIORENDERER_H_ 30 31 #include <cstddef> 32 33 namespace cricket { 34 35 // Abstract interface for rendering the audio data. 36 class AudioRenderer { 37 public: 38 class Sink { 39 public: 40 // Callback to receive data from the AudioRenderer. 41 virtual void OnData(const void* audio_data, 42 int bits_per_sample, 43 int sample_rate, 44 size_t number_of_channels, 45 size_t number_of_frames) = 0; 46 47 // Called when the AudioRenderer is going away. 48 virtual void OnClose() = 0; 49 50 protected: ~Sink()51 virtual ~Sink() {} 52 }; 53 54 // Sets a sink to the AudioRenderer. There can be only one sink connected 55 // to the renderer at a time. SetSink(Sink * sink)56 virtual void SetSink(Sink* sink) {} 57 58 protected: ~AudioRenderer()59 virtual ~AudioRenderer() {} 60 }; 61 62 } // namespace cricket 63 64 #endif // TALK_MEDIA_BASE_AUDIORENDERER_H_ 65