blob: c6deb82f2d4c911f2f725ad8be87248b79d44ed9 [file] [log] [blame]
// Copyright 2018 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cobalt/media_stream/media_stream_audio_track.h"
#include <vector>
#include "base/callback_helpers.h"
#include "cobalt/media_stream/media_track_settings.h"
namespace cobalt {
namespace media_stream {
void MediaStreamAudioTrack::AddSink(MediaStreamAudioSink* sink) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (stop_callback_.is_null()) {
sink->OnReadyStateChanged(MediaStreamTrack::kReadyStateEnded);
return;
}
deliverer_.AddConsumer(sink);
}
void MediaStreamAudioTrack::RemoveSink(MediaStreamAudioSink* sink) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
bool last_consumer = deliverer_.RemoveConsumer(sink);
if (last_consumer) {
Stop();
}
}
void MediaStreamAudioTrack::Stop() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
base::ResetAndRunIfNotNull(&stop_callback_);
std::vector<MediaStreamAudioSink*> consumer_sinks_to_remove;
deliverer_.GetConsumerList(&consumer_sinks_to_remove);
for (MediaStreamAudioSink* sink : consumer_sinks_to_remove) {
deliverer_.RemoveConsumer(sink);
sink->OnReadyStateChanged(MediaStreamTrack::kReadyStateEnded);
}
}
void MediaStreamAudioTrack::OnReadyStateChanged(
media_stream::MediaStreamTrack::ReadyState new_state) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
std::vector<MediaStreamAudioSink*> sinks_to_notify;
deliverer_.GetConsumerList(&sinks_to_notify);
for (MediaStreamAudioSink* sink : sinks_to_notify) {
sink->OnReadyStateChanged(new_state);
}
}
void MediaStreamAudioTrack::Start(const base::Closure& stop_callback) {
DCHECK(!stop_callback.is_null()); // This variable is passed in.
DCHECK(stop_callback_.is_null()); // This is the member variable.
stop_callback_ = stop_callback;
}
void MediaStreamAudioTrack::OnData(const ShellAudioBus& audio_bus,
base::TimeTicks reference_time) {
deliverer_.OnData(audio_bus, reference_time);
}
void MediaStreamAudioTrack::OnSetFormat(
const media_stream::AudioParameters& params) {
MediaTrackSettings settings =
MediaStreamAudioTrack::MediaTrackSettingsFromAudioParameters(params);
SetMediaTrackSettings(settings);
deliverer_.OnSetFormat(params);
}
} // namespace media_stream
} // namespace cobalt