| /* |
| * 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/neteq/audio_decoder_impl.h" |
| |
| #include <assert.h> |
| |
| #include "webrtc/base/checks.h" |
| #include "webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h" |
| #include "webrtc/modules/audio_coding/codecs/g711/include/g711_interface.h" |
| #ifdef WEBRTC_CODEC_G722 |
| #include "webrtc/modules/audio_coding/codecs/g722/include/audio_decoder_g722.h" |
| #endif |
| #ifdef WEBRTC_CODEC_ILBC |
| #include "webrtc/modules/audio_coding/codecs/ilbc/interface/audio_decoder_ilbc.h" |
| #endif |
| #ifdef WEBRTC_CODEC_ISACFX |
| #include "webrtc/modules/audio_coding/codecs/isac/fix/interface/audio_encoder_isacfix.h" |
| #endif |
| #ifdef WEBRTC_CODEC_ISAC |
| #include "webrtc/modules/audio_coding/codecs/isac/main/interface/audio_encoder_isac.h" |
| #endif |
| #ifdef WEBRTC_CODEC_OPUS |
| #include "webrtc/modules/audio_coding/codecs/opus/interface/audio_decoder_opus.h" |
| #endif |
| #include "webrtc/modules/audio_coding/codecs/pcm16b/include/audio_decoder_pcm16b.h" |
| |
| namespace webrtc { |
| |
| // PCMu |
| |
| void AudioDecoderPcmU::Reset() { |
| } |
| size_t AudioDecoderPcmU::Channels() const { |
| return 1; |
| } |
| |
| int AudioDecoderPcmU::DecodeInternal(const uint8_t* encoded, |
| size_t encoded_len, |
| int sample_rate_hz, |
| int16_t* decoded, |
| SpeechType* speech_type) { |
| RTC_DCHECK_EQ(sample_rate_hz, 8000); |
| int16_t temp_type = 1; // Default is speech. |
| size_t ret = WebRtcG711_DecodeU(encoded, encoded_len, decoded, &temp_type); |
| *speech_type = ConvertSpeechType(temp_type); |
| return static_cast<int>(ret); |
| } |
| |
| int AudioDecoderPcmU::PacketDuration(const uint8_t* encoded, |
| size_t encoded_len) const { |
| // One encoded byte per sample per channel. |
| return static_cast<int>(encoded_len / Channels()); |
| } |
| |
| size_t AudioDecoderPcmUMultiCh::Channels() const { |
| return channels_; |
| } |
| |
| // PCMa |
| |
| void AudioDecoderPcmA::Reset() { |
| } |
| size_t AudioDecoderPcmA::Channels() const { |
| return 1; |
| } |
| |
| int AudioDecoderPcmA::DecodeInternal(const uint8_t* encoded, |
| size_t encoded_len, |
| int sample_rate_hz, |
| int16_t* decoded, |
| SpeechType* speech_type) { |
| RTC_DCHECK_EQ(sample_rate_hz, 8000); |
| int16_t temp_type = 1; // Default is speech. |
| size_t ret = WebRtcG711_DecodeA(encoded, encoded_len, decoded, &temp_type); |
| *speech_type = ConvertSpeechType(temp_type); |
| return static_cast<int>(ret); |
| } |
| |
| int AudioDecoderPcmA::PacketDuration(const uint8_t* encoded, |
| size_t encoded_len) const { |
| // One encoded byte per sample per channel. |
| return static_cast<int>(encoded_len / Channels()); |
| } |
| |
| size_t AudioDecoderPcmAMultiCh::Channels() const { |
| return channels_; |
| } |
| |
| AudioDecoderCng::AudioDecoderCng() { |
| RTC_CHECK_EQ(0, WebRtcCng_CreateDec(&dec_state_)); |
| WebRtcCng_InitDec(dec_state_); |
| } |
| |
| AudioDecoderCng::~AudioDecoderCng() { |
| WebRtcCng_FreeDec(dec_state_); |
| } |
| |
| void AudioDecoderCng::Reset() { |
| WebRtcCng_InitDec(dec_state_); |
| } |
| |
| int AudioDecoderCng::IncomingPacket(const uint8_t* payload, |
| size_t payload_len, |
| uint16_t rtp_sequence_number, |
| uint32_t rtp_timestamp, |
| uint32_t arrival_timestamp) { |
| return -1; |
| } |
| |
| CNG_dec_inst* AudioDecoderCng::CngDecoderInstance() { |
| return dec_state_; |
| } |
| |
| size_t AudioDecoderCng::Channels() const { |
| return 1; |
| } |
| |
| int AudioDecoderCng::DecodeInternal(const uint8_t* encoded, |
| size_t encoded_len, |
| int sample_rate_hz, |
| int16_t* decoded, |
| SpeechType* speech_type) { |
| return -1; |
| } |
| |
| bool CodecSupported(NetEqDecoder codec_type) { |
| switch (codec_type) { |
| case kDecoderPCMu: |
| case kDecoderPCMa: |
| case kDecoderPCMu_2ch: |
| case kDecoderPCMa_2ch: |
| #ifdef WEBRTC_CODEC_ILBC |
| case kDecoderILBC: |
| #endif |
| #if defined(WEBRTC_CODEC_ISACFX) || defined(WEBRTC_CODEC_ISAC) |
| case kDecoderISAC: |
| #endif |
| #ifdef WEBRTC_CODEC_ISAC |
| case kDecoderISACswb: |
| case kDecoderISACfb: |
| #endif |
| case kDecoderPCM16B: |
| case kDecoderPCM16Bwb: |
| case kDecoderPCM16Bswb32kHz: |
| case kDecoderPCM16Bswb48kHz: |
| case kDecoderPCM16B_2ch: |
| case kDecoderPCM16Bwb_2ch: |
| case kDecoderPCM16Bswb32kHz_2ch: |
| case kDecoderPCM16Bswb48kHz_2ch: |
| case kDecoderPCM16B_5ch: |
| #ifdef WEBRTC_CODEC_G722 |
| case kDecoderG722: |
| case kDecoderG722_2ch: |
| #endif |
| #ifdef WEBRTC_CODEC_OPUS |
| case kDecoderOpus: |
| case kDecoderOpus_2ch: |
| #endif |
| case kDecoderRED: |
| case kDecoderAVT: |
| case kDecoderCNGnb: |
| case kDecoderCNGwb: |
| case kDecoderCNGswb32kHz: |
| case kDecoderCNGswb48kHz: |
| case kDecoderArbitrary: { |
| return true; |
| } |
| default: { |
| return false; |
| } |
| } |
| } |
| |
| int CodecSampleRateHz(NetEqDecoder codec_type) { |
| switch (codec_type) { |
| case kDecoderPCMu: |
| case kDecoderPCMa: |
| case kDecoderPCMu_2ch: |
| case kDecoderPCMa_2ch: |
| #ifdef WEBRTC_CODEC_ILBC |
| case kDecoderILBC: |
| #endif |
| case kDecoderPCM16B: |
| case kDecoderPCM16B_2ch: |
| case kDecoderPCM16B_5ch: |
| case kDecoderCNGnb: { |
| return 8000; |
| } |
| #if defined(WEBRTC_CODEC_ISACFX) || defined(WEBRTC_CODEC_ISAC) |
| case kDecoderISAC: |
| #endif |
| case kDecoderPCM16Bwb: |
| case kDecoderPCM16Bwb_2ch: |
| #ifdef WEBRTC_CODEC_G722 |
| case kDecoderG722: |
| case kDecoderG722_2ch: |
| #endif |
| case kDecoderCNGwb: { |
| return 16000; |
| } |
| #ifdef WEBRTC_CODEC_ISAC |
| case kDecoderISACswb: |
| case kDecoderISACfb: |
| #endif |
| case kDecoderPCM16Bswb32kHz: |
| case kDecoderPCM16Bswb32kHz_2ch: |
| case kDecoderCNGswb32kHz: { |
| return 32000; |
| } |
| case kDecoderPCM16Bswb48kHz: |
| case kDecoderPCM16Bswb48kHz_2ch: { |
| return 48000; |
| } |
| #ifdef WEBRTC_CODEC_OPUS |
| case kDecoderOpus: |
| case kDecoderOpus_2ch: { |
| return 48000; |
| } |
| #endif |
| case kDecoderCNGswb48kHz: { |
| // TODO(tlegrand): Remove limitation once ACM has full 48 kHz support. |
| return 32000; |
| } |
| default: { |
| return -1; // Undefined sample rate. |
| } |
| } |
| } |
| |
| AudioDecoder* CreateAudioDecoder(NetEqDecoder codec_type) { |
| if (!CodecSupported(codec_type)) { |
| return NULL; |
| } |
| switch (codec_type) { |
| case kDecoderPCMu: |
| return new AudioDecoderPcmU; |
| case kDecoderPCMa: |
| return new AudioDecoderPcmA; |
| case kDecoderPCMu_2ch: |
| return new AudioDecoderPcmUMultiCh(2); |
| case kDecoderPCMa_2ch: |
| return new AudioDecoderPcmAMultiCh(2); |
| #ifdef WEBRTC_CODEC_ILBC |
| case kDecoderILBC: |
| return new AudioDecoderIlbc; |
| #endif |
| #if defined(WEBRTC_CODEC_ISACFX) |
| case kDecoderISAC: |
| return new AudioDecoderIsacFix(); |
| #elif defined(WEBRTC_CODEC_ISAC) |
| case kDecoderISAC: |
| case kDecoderISACswb: |
| case kDecoderISACfb: |
| return new AudioDecoderIsac(); |
| #endif |
| case kDecoderPCM16B: |
| case kDecoderPCM16Bwb: |
| case kDecoderPCM16Bswb32kHz: |
| case kDecoderPCM16Bswb48kHz: |
| return new AudioDecoderPcm16B; |
| case kDecoderPCM16B_2ch: |
| case kDecoderPCM16Bwb_2ch: |
| case kDecoderPCM16Bswb32kHz_2ch: |
| case kDecoderPCM16Bswb48kHz_2ch: |
| return new AudioDecoderPcm16BMultiCh(2); |
| case kDecoderPCM16B_5ch: |
| return new AudioDecoderPcm16BMultiCh(5); |
| #ifdef WEBRTC_CODEC_G722 |
| case kDecoderG722: |
| return new AudioDecoderG722; |
| case kDecoderG722_2ch: |
| return new AudioDecoderG722Stereo; |
| #endif |
| #ifdef WEBRTC_CODEC_OPUS |
| case kDecoderOpus: |
| return new AudioDecoderOpus(1); |
| case kDecoderOpus_2ch: |
| return new AudioDecoderOpus(2); |
| #endif |
| case kDecoderCNGnb: |
| case kDecoderCNGwb: |
| case kDecoderCNGswb32kHz: |
| case kDecoderCNGswb48kHz: |
| return new AudioDecoderCng; |
| case kDecoderRED: |
| case kDecoderAVT: |
| case kDecoderArbitrary: |
| default: { |
| return NULL; |
| } |
| } |
| } |
| |
| } // namespace webrtc |