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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be | 
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. | 
| 4 | 4 | 
| 5 #include "content/renderer/pepper/pepper_media_stream_audio_track_host.h" | 5 #include "content/renderer/pepper/pepper_media_stream_audio_track_host.h" | 
| 6 | 6 | 
| 7 #include <algorithm> | 7 #include <algorithm> | 
| 8 | 8 | 
| 9 #include "base/bind.h" | 9 #include "base/bind.h" | 
| 10 #include "base/location.h" | 10 #include "base/location.h" | 
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| 27 using ppapi::host::HostMessageContext; | 27 using ppapi::host::HostMessageContext; | 
| 28 using ppapi::MediaStreamAudioTrackShared; | 28 using ppapi::MediaStreamAudioTrackShared; | 
| 29 | 29 | 
| 30 namespace { | 30 namespace { | 
| 31 | 31 | 
| 32 // Audio buffer durations in milliseconds. | 32 // Audio buffer durations in milliseconds. | 
| 33 const uint32_t kMinDuration = 10; | 33 const uint32_t kMinDuration = 10; | 
| 34 const uint32_t kDefaultDuration = 10; | 34 const uint32_t kDefaultDuration = 10; | 
| 35 | 35 | 
| 36 const int32_t kDefaultNumberOfBuffers = 4; | 36 const int32_t kDefaultNumberOfBuffers = 4; | 
| 37 const int32_t kMaxNumberOfBuffers = 1000;  // 10 sec | 37 const int32_t kMaxNumberOfAudioBuffers = 1000;  // 10 sec | 
| 38 | 38 | 
| 39 // Returns true if the |sample_rate| is supported in | 39 // Returns true if the |sample_rate| is supported in | 
| 40 // |PP_AudioBuffer_SampleRate|, otherwise false. | 40 // |PP_AudioBuffer_SampleRate|, otherwise false. | 
| 41 PP_AudioBuffer_SampleRate GetPPSampleRate(int sample_rate) { | 41 PP_AudioBuffer_SampleRate GetPPSampleRate(int sample_rate) { | 
| 42   switch (sample_rate) { | 42   switch (sample_rate) { | 
| 43     case 8000: | 43     case 8000: | 
| 44       return PP_AUDIOBUFFER_SAMPLERATE_8000; | 44       return PP_AUDIOBUFFER_SAMPLERATE_8000; | 
| 45     case 16000: | 45     case 16000: | 
| 46       return PP_AUDIOBUFFER_SAMPLERATE_16000; | 46       return PP_AUDIOBUFFER_SAMPLERATE_16000; | 
| 47     case 22050: | 47     case 22050: | 
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| 335                                                                    context); | 335                                                                    context); | 
| 336 } | 336 } | 
| 337 | 337 | 
| 338 int32_t PepperMediaStreamAudioTrackHost::OnHostMsgConfigure( | 338 int32_t PepperMediaStreamAudioTrackHost::OnHostMsgConfigure( | 
| 339     HostMessageContext* context, | 339     HostMessageContext* context, | 
| 340     const MediaStreamAudioTrackShared::Attributes& attributes) { | 340     const MediaStreamAudioTrackShared::Attributes& attributes) { | 
| 341   if (!MediaStreamAudioTrackShared::VerifyAttributes(attributes)) | 341   if (!MediaStreamAudioTrackShared::VerifyAttributes(attributes)) | 
| 342     return PP_ERROR_BADARGUMENT; | 342     return PP_ERROR_BADARGUMENT; | 
| 343 | 343 | 
| 344   int32_t buffers = attributes.buffers | 344   int32_t buffers = attributes.buffers | 
| 345                         ? std::min(kMaxNumberOfBuffers, attributes.buffers) | 345                         ? std::min(kMaxNumberOfAudioBuffers, attributes.buffers) | 
| 346                         : kDefaultNumberOfBuffers; | 346                         : kDefaultNumberOfBuffers; | 
| 347   return audio_sink_.Configure(buffers, attributes.duration, | 347   return audio_sink_.Configure(buffers, attributes.duration, | 
| 348                                context->MakeReplyMessageContext()); | 348                                context->MakeReplyMessageContext()); | 
| 349 } | 349 } | 
| 350 | 350 | 
| 351 void PepperMediaStreamAudioTrackHost::OnClose() { | 351 void PepperMediaStreamAudioTrackHost::OnClose() { | 
| 352   if (connected_) { | 352   if (connected_) { | 
| 353     MediaStreamAudioSink::RemoveFromAudioTrack(&audio_sink_, track_); | 353     MediaStreamAudioSink::RemoveFromAudioTrack(&audio_sink_, track_); | 
| 354     connected_ = false; | 354     connected_ = false; | 
| 355   } | 355   } | 
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| 370     // can't happen until the sink is added to the audio track below. | 370     // can't happen until the sink is added to the audio track below. | 
| 371     if (format.IsValid()) | 371     if (format.IsValid()) | 
| 372       audio_sink_.OnSetFormat(format); | 372       audio_sink_.OnSetFormat(format); | 
| 373 | 373 | 
| 374     MediaStreamAudioSink::AddToAudioTrack(&audio_sink_, track_); | 374     MediaStreamAudioSink::AddToAudioTrack(&audio_sink_, track_); | 
| 375     connected_ = true; | 375     connected_ = true; | 
| 376   } | 376   } | 
| 377 } | 377 } | 
| 378 | 378 | 
| 379 }  // namespace content | 379 }  // namespace content | 
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