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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_controller.h" | 5 #include "media/audio/audio_output_controller.h" |
| 6 | 6 |
| 7 #include <stdint.h> | 7 #include <stdint.h> |
| 8 | 8 |
| 9 #include <algorithm> |
| 9 #include <limits> | 10 #include <limits> |
| 10 | 11 |
| 11 #include "base/bind.h" | 12 #include "base/bind.h" |
| 12 #include "base/metrics/histogram_macros.h" | 13 #include "base/metrics/histogram_macros.h" |
| 13 #include "base/numerics/safe_conversions.h" | 14 #include "base/numerics/safe_conversions.h" |
| 14 #include "base/task_runner_util.h" | 15 #include "base/task_runner_util.h" |
| 15 #include "base/threading/platform_thread.h" | 16 #include "base/threading/platform_thread.h" |
| 16 #include "base/time/time.h" | 17 #include "base/time/time.h" |
| 17 #include "base/trace_event/trace_event.h" | 18 #include "base/trace_event/trace_event.h" |
| 18 | 19 |
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| 287 } | 288 } |
| 288 | 289 |
| 289 void AudioOutputController::DoReportError() { | 290 void AudioOutputController::DoReportError() { |
| 290 DCHECK(message_loop_->BelongsToCurrentThread()); | 291 DCHECK(message_loop_->BelongsToCurrentThread()); |
| 291 if (state_ != kClosed) | 292 if (state_ != kClosed) |
| 292 handler_->OnError(); | 293 handler_->OnError(); |
| 293 } | 294 } |
| 294 | 295 |
| 295 int AudioOutputController::OnMoreData(AudioBus* dest, | 296 int AudioOutputController::OnMoreData(AudioBus* dest, |
| 296 uint32_t total_bytes_delay, | 297 uint32_t total_bytes_delay, |
| 298 base::TimeDelta delay_timestamp, |
| 297 uint32_t frames_skipped) { | 299 uint32_t frames_skipped) { |
| 298 TRACE_EVENT0("audio", "AudioOutputController::OnMoreData"); | 300 TRACE_EVENT0("audio", "AudioOutputController::OnMoreData"); |
| 299 | 301 |
| 300 // Indicate that we haven't wedged (at least not indefinitely, WedgeCheck() | 302 // Indicate that we haven't wedged (at least not indefinitely, WedgeCheck() |
| 301 // may have already fired if OnMoreData() took an abnormal amount of time). | 303 // may have already fired if OnMoreData() took an abnormal amount of time). |
| 302 // Since this thread is the only writer of |on_more_io_data_called_| once the | 304 // Since this thread is the only writer of |on_more_io_data_called_| once the |
| 303 // thread starts, its safe to compare and then increment. | 305 // thread starts, its safe to compare and then increment. |
| 304 if (base::AtomicRefCountIsZero(&on_more_io_data_called_)) | 306 if (base::AtomicRefCountIsZero(&on_more_io_data_called_)) |
| 305 base::AtomicRefCountInc(&on_more_io_data_called_); | 307 base::AtomicRefCountInc(&on_more_io_data_called_); |
| 306 | 308 |
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| 505 DCHECK(message_loop_->BelongsToCurrentThread()); | 507 DCHECK(message_loop_->BelongsToCurrentThread()); |
| 506 | 508 |
| 507 // If we should be playing and we haven't, that's a wedge. | 509 // If we should be playing and we haven't, that's a wedge. |
| 508 if (state_ == kPlaying) { | 510 if (state_ == kPlaying) { |
| 509 UMA_HISTOGRAM_BOOLEAN("Media.AudioOutputControllerPlaybackStartupSuccess", | 511 UMA_HISTOGRAM_BOOLEAN("Media.AudioOutputControllerPlaybackStartupSuccess", |
| 510 base::AtomicRefCountIsOne(&on_more_io_data_called_)); | 512 base::AtomicRefCountIsOne(&on_more_io_data_called_)); |
| 511 } | 513 } |
| 512 } | 514 } |
| 513 | 515 |
| 514 } // namespace media | 516 } // namespace media |
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