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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.
*/
#include "webrtc/modules/audio_coding/main/acm2/acm_pcm16b.h"
#ifdef WEBRTC_CODEC_PCM16
#include "webrtc/modules/audio_coding/codecs/pcm16b/include/pcm16b.h"
#include "webrtc/modules/audio_coding/main/acm2/acm_codec_database.h"
#include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h"
#include "webrtc/system_wrappers/interface/trace.h"
#endif
namespace webrtc {
namespace acm2 {
#ifndef WEBRTC_CODEC_PCM16
ACMPCM16B::ACMPCM16B(int16_t /* codec_id */) { return; }
ACMPCM16B::~ACMPCM16B() { return; }
int16_t ACMPCM16B::InternalEncode(uint8_t* /* bitstream */,
int16_t* /* bitstream_len_byte */) {
return -1;
}
int16_t ACMPCM16B::InternalInitEncoder(
WebRtcACMCodecParams* /* codec_params */) {
return -1;
}
ACMGenericCodec* ACMPCM16B::CreateInstance(void) { return NULL; }
int16_t ACMPCM16B::InternalCreateEncoder() { return -1; }
void ACMPCM16B::DestructEncoderSafe() { return; }
#else //===================== Actual Implementation =======================
ACMPCM16B::ACMPCM16B(int16_t codec_id) {
codec_id_ = codec_id;
sampling_freq_hz_ = ACMCodecDB::CodecFreq(codec_id_);
}
ACMPCM16B::~ACMPCM16B() { return; }
int16_t ACMPCM16B::InternalEncode(uint8_t* bitstream,
int16_t* bitstream_len_byte) {
*bitstream_len_byte = WebRtcPcm16b_Encode(&in_audio_[in_audio_ix_read_],
frame_len_smpl_ * num_channels_,
bitstream);
// Increment the read index to tell the caller that how far
// we have gone forward in reading the audio buffer.
in_audio_ix_read_ += frame_len_smpl_ * num_channels_;
return *bitstream_len_byte;
}
int16_t ACMPCM16B::InternalInitEncoder(
WebRtcACMCodecParams* /* codec_params */) {
// This codec does not need initialization, PCM has no instance.
return 0;
}
ACMGenericCodec* ACMPCM16B::CreateInstance(void) { return NULL; }
int16_t ACMPCM16B::InternalCreateEncoder() {
// PCM has no instance.
return 0;
}
void ACMPCM16B::DestructEncoderSafe() {
// PCM has no instance.
encoder_exist_ = false;
encoder_initialized_ = false;
return;
}
#endif
} // namespace acm2
} // namespace webrtc
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