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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_AUDIO_ENCODER_H_
#define EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_AUDIO_ENCODER_H_
#include "content/public/renderer/media_stream_audio_sink.h"
#include "extensions/renderer/api/display_source/wifi_display/wifi_display_media_encoder.h"
#include "third_party/wds/src/libwds/public/audio_codec.h"
namespace extensions {
// This interface is a base class for audio used by the Wi-Fi Display media
// pipeline.
// Threading: the client code should belong to a single thread.
class WiFiDisplayAudioEncoder : public WiFiDisplayMediaEncoder,
public content::MediaStreamAudioSink {
public:
using AudioEncoderCallback =
base::Callback<void(scoped_refptr<WiFiDisplayAudioEncoder>)>;
static void Create(const wds::AudioCodec& audio_codec,
const AudioEncoderCallback& encoder_callback);
protected:
static const size_t kInvalidCodecModeValue = ~static_cast<size_t>(0u);
// A factory method that creates a new encoder instance for Linear Pulse-Code
// Modulation (LPCM) audio encoding.
static void CreateLPCM(const wds::AudioCodec& audio_codec,
const AudioEncoderCallback& encoder_callback);
explicit WiFiDisplayAudioEncoder(const wds::AudioCodec& audio_codec);
~WiFiDisplayAudioEncoder() override;
size_t GetAudioCodecMode() const;
const wds::AudioCodec audio_codec_;
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_AUDIO_ENCODER_H_
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