| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/renderer/media/external_media_stream_audio_source.h" | |
| 6 | |
| 7 namespace content { | |
| 8 | |
| 9 ExternalMediaStreamAudioSource::ExternalMediaStreamAudioSource( | |
| 10 scoped_refptr<media::AudioCapturerSource> source, | |
| 11 int sample_rate, | |
| 12 media::ChannelLayout channel_layout, | |
| 13 int frames_per_buffer, | |
| 14 bool is_remote) | |
| 15 : MediaStreamAudioSource(!is_remote), source_(std::move(source)), | |
| 16 was_started_(false) { | |
| 17 DVLOG(1) | |
| 18 << "ExternalMediaStreamAudioSource::ExternalMediaStreamAudioSource()"; | |
| 19 DCHECK(source_.get()); | |
| 20 MediaStreamAudioSource::SetFormat(media::AudioParameters( | |
| 21 media::AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout, | |
| 22 sample_rate, | |
| 23 16, // Legacy parameter (data is always in 32-bit float format). | |
| 24 frames_per_buffer)); | |
| 25 } | |
| 26 | |
| 27 ExternalMediaStreamAudioSource::~ExternalMediaStreamAudioSource() { | |
| 28 DVLOG(1) | |
| 29 << "ExternalMediaStreamAudioSource::~ExternalMediaStreamAudioSource()"; | |
| 30 EnsureSourceIsStopped(); | |
| 31 } | |
| 32 | |
| 33 bool ExternalMediaStreamAudioSource::EnsureSourceIsStarted() { | |
| 34 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 35 if (was_started_) | |
| 36 return true; | |
| 37 VLOG(1) << "Starting externally-provided " | |
| 38 << (is_local_source() ? "local" : "remote") | |
| 39 << " source with audio parameters={" | |
| 40 << GetAudioParameters().AsHumanReadableString() << "}."; | |
| 41 source_->Initialize(GetAudioParameters(), this, -1); | |
| 42 source_->Start(); | |
| 43 was_started_ = true; | |
| 44 return true; | |
| 45 } | |
| 46 | |
| 47 void ExternalMediaStreamAudioSource::EnsureSourceIsStopped() { | |
| 48 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 49 if (!source_) | |
| 50 return; | |
| 51 if (was_started_) | |
| 52 source_->Stop(); | |
| 53 source_ = nullptr; | |
| 54 VLOG(1) << "Stopped externally-provided " | |
| 55 << (is_local_source() ? "local" : "remote") | |
| 56 << " source with audio parameters={" | |
| 57 << GetAudioParameters().AsHumanReadableString() << "}."; | |
| 58 } | |
| 59 | |
| 60 void ExternalMediaStreamAudioSource::Capture(const media::AudioBus* audio_bus, | |
| 61 int audio_delay_milliseconds, | |
| 62 double volume, | |
| 63 bool key_pressed) { | |
| 64 DCHECK(audio_bus); | |
| 65 // TODO(miu): Plumbing is needed to determine the actual capture timestamp | |
| 66 // of the audio, instead of just snapshotting TimeTicks::Now(), for proper | |
| 67 // audio/video sync. http://crbug.com/335335 | |
| 68 MediaStreamAudioSource::DeliverDataToTracks( | |
| 69 *audio_bus, | |
| 70 base::TimeTicks::Now() - | |
| 71 base::TimeDelta::FromMilliseconds(audio_delay_milliseconds)); | |
| 72 } | |
| 73 | |
| 74 void ExternalMediaStreamAudioSource::OnCaptureError(const std::string& why) { | |
| 75 // As of this writing, this method doesn't get called for anything useful, | |
| 76 // and all other implementors just log the message, but don't disconnect sinks | |
| 77 // or take any other action. So, just log the error. | |
| 78 LOG(ERROR) << why; | |
| 79 } | |
| 80 | |
| 81 } // namespace content | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1966043006:
Revert of MediaStream audio: Refactor 3 separate "glue" implementations into one. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master