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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 "media/audio/audio_output_resampler.h" | 5 #include "media/audio/audio_output_resampler.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/bind_helpers.h" | 8 #include "base/bind_helpers.h" |
9 #include "base/compiler_specific.h" | 9 #include "base/compiler_specific.h" |
10 #include "base/metrics/histogram.h" | 10 #include "base/metrics/histogram.h" |
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291 DCHECK(task_runner_->BelongsToCurrentThread()); | 291 DCHECK(task_runner_->BelongsToCurrentThread()); |
292 | 292 |
293 // No AudioOutputProxy objects should hold a reference to us when we get | 293 // No AudioOutputProxy objects should hold a reference to us when we get |
294 // to this stage. | 294 // to this stage. |
295 DCHECK(HasOneRef()) << "Only the AudioManager should hold a reference"; | 295 DCHECK(HasOneRef()) << "Only the AudioManager should hold a reference"; |
296 | 296 |
297 dispatcher_->Shutdown(); | 297 dispatcher_->Shutdown(); |
298 DCHECK(callbacks_.empty()); | 298 DCHECK(callbacks_.empty()); |
299 } | 299 } |
300 | 300 |
301 void AudioOutputResampler::CloseStreamsForWedgeFix() { | |
302 DCHECK(task_runner_->BelongsToCurrentThread()); | |
303 | |
304 // Stop and close all active streams. Once all streams across all dispatchers | |
305 // have been closed the AudioManager will call RestartStreamsForWedgeFix(). | |
306 for (CallbackMap::iterator it = callbacks_.begin(); it != callbacks_.end(); | |
307 ++it) { | |
308 if (it->second->started()) | |
309 dispatcher_->StopStream(it->first); | |
310 dispatcher_->CloseStream(it->first); | |
311 } | |
312 | |
313 // Close all idle streams as well. | |
314 dispatcher_->CloseStreamsForWedgeFix(); | |
315 } | |
316 | |
317 void AudioOutputResampler::RestartStreamsForWedgeFix() { | |
318 DCHECK(task_runner_->BelongsToCurrentThread()); | |
319 // By opening all streams first and then starting them one by one we ensure | |
320 // the dispatcher only opens streams for those which will actually be used. | |
321 for (CallbackMap::iterator it = callbacks_.begin(); it != callbacks_.end(); | |
322 ++it) { | |
323 dispatcher_->OpenStream(); | |
324 } | |
325 for (CallbackMap::iterator it = callbacks_.begin(); it != callbacks_.end(); | |
326 ++it) { | |
327 if (it->second->started()) | |
328 dispatcher_->StartStream(it->second, it->first); | |
329 } | |
330 } | |
331 | |
332 OnMoreDataConverter::OnMoreDataConverter(const AudioParameters& input_params, | 301 OnMoreDataConverter::OnMoreDataConverter(const AudioParameters& input_params, |
333 const AudioParameters& output_params) | 302 const AudioParameters& output_params) |
334 : io_ratio_(static_cast<double>(input_params.GetBytesPerSecond()) / | 303 : io_ratio_(static_cast<double>(input_params.GetBytesPerSecond()) / |
335 output_params.GetBytesPerSecond()), | 304 output_params.GetBytesPerSecond()), |
336 source_callback_(NULL), | 305 source_callback_(NULL), |
337 input_bytes_per_second_(input_params.GetBytesPerSecond()), | 306 input_bytes_per_second_(input_params.GetBytesPerSecond()), |
338 audio_converter_(input_params, output_params, false) {} | 307 audio_converter_(input_params, output_params, false) {} |
339 | 308 |
340 OnMoreDataConverter::~OnMoreDataConverter() { | 309 OnMoreDataConverter::~OnMoreDataConverter() { |
341 // Ensure Stop() has been called so we don't end up with an AudioOutputStream | 310 // Ensure Stop() has been called so we don't end up with an AudioOutputStream |
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399 if (frames > 0 && frames < dest->frames()) | 368 if (frames > 0 && frames < dest->frames()) |
400 dest->ZeroFramesPartial(frames, dest->frames() - frames); | 369 dest->ZeroFramesPartial(frames, dest->frames() - frames); |
401 return frames > 0 ? 1 : 0; | 370 return frames > 0 ? 1 : 0; |
402 } | 371 } |
403 | 372 |
404 void OnMoreDataConverter::OnError(AudioOutputStream* stream) { | 373 void OnMoreDataConverter::OnError(AudioOutputStream* stream) { |
405 source_callback_->OnError(stream); | 374 source_callback_->OnError(stream); |
406 } | 375 } |
407 | 376 |
408 } // namespace media | 377 } // namespace media |
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