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/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_AUDIO_DECODER_IMPL_H_
#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_AUDIO_DECODER_IMPL_H_
#include <assert.h>
#include "webrtc/engine_configurations.h"
#include "webrtc/base/constructormagic.h"
#include "webrtc/modules/audio_coding/codecs/audio_decoder.h"
#include "webrtc/modules/audio_coding/codecs/cng/webrtc_cng.h"
#ifdef WEBRTC_CODEC_G722
#include "webrtc/modules/audio_coding/codecs/g722/g722_interface.h"
#endif
#include "webrtc/modules/audio_coding/main/acm2/rent_a_codec.h"
#include "webrtc/typedefs.h"
namespace webrtc {
// AudioDecoderCng is a special type of AudioDecoder. It inherits from
// AudioDecoder just to fit in the DecoderDatabase. None of the class methods
// should be used, except constructor, destructor, and accessors.
// TODO(hlundin): Consider the possibility to create a super-class to
// AudioDecoder that is stored in DecoderDatabase. Then AudioDecoder and a
// specific CngDecoder class could both inherit from that class.
class AudioDecoderCng : public AudioDecoder {
public:
explicit AudioDecoderCng();
~AudioDecoderCng() override;
void Reset() override;
int IncomingPacket(const uint8_t* payload,
size_t payload_len,
uint16_t rtp_sequence_number,
uint32_t rtp_timestamp,
uint32_t arrival_timestamp) override;
CNG_dec_inst* CngDecoderInstance() override;
size_t Channels() const override;
protected:
int DecodeInternal(const uint8_t* encoded,
size_t encoded_len,
int sample_rate_hz,
int16_t* decoded,
SpeechType* speech_type) override;
private:
CNG_dec_inst* dec_state_;
RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderCng);
};
using NetEqDecoder = acm2::RentACodec::NetEqDecoder;
// Returns true if |codec_type| is supported.
bool CodecSupported(NetEqDecoder codec_type);
// Returns the sample rate for |codec_type|.
int CodecSampleRateHz(NetEqDecoder codec_type);
// Creates an AudioDecoder object of type |codec_type|. Returns NULL for for
// unsupported codecs, and when creating an AudioDecoder is not applicable
// (e.g., for RED and DTMF/AVT types).
AudioDecoder* CreateAudioDecoder(NetEqDecoder codec_type);
} // namespace webrtc
#endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_AUDIO_DECODER_IMPL_H_