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| 1 /* |
| 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_G711_INCLUDE_AUDIO_DECODER_PCM_H_ |
| 12 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_G711_INCLUDE_AUDIO_DECODER_PCM_H_ |
| 13 |
| 14 #include "webrtc/base/checks.h" |
| 15 #include "webrtc/modules/audio_coding/codecs/audio_decoder.h" |
| 16 |
| 17 namespace webrtc { |
| 18 |
| 19 class AudioDecoderPcmU : public AudioDecoder { |
| 20 public: |
| 21 AudioDecoderPcmU() {} |
| 22 void Reset() override; |
| 23 int PacketDuration(const uint8_t* encoded, size_t encoded_len) const override; |
| 24 size_t Channels() const override; |
| 25 |
| 26 protected: |
| 27 int DecodeInternal(const uint8_t* encoded, |
| 28 size_t encoded_len, |
| 29 int sample_rate_hz, |
| 30 int16_t* decoded, |
| 31 SpeechType* speech_type) override; |
| 32 |
| 33 private: |
| 34 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderPcmU); |
| 35 }; |
| 36 |
| 37 class AudioDecoderPcmA : public AudioDecoder { |
| 38 public: |
| 39 AudioDecoderPcmA() {} |
| 40 void Reset() override; |
| 41 int PacketDuration(const uint8_t* encoded, size_t encoded_len) const override; |
| 42 size_t Channels() const override; |
| 43 |
| 44 protected: |
| 45 int DecodeInternal(const uint8_t* encoded, |
| 46 size_t encoded_len, |
| 47 int sample_rate_hz, |
| 48 int16_t* decoded, |
| 49 SpeechType* speech_type) override; |
| 50 |
| 51 private: |
| 52 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderPcmA); |
| 53 }; |
| 54 |
| 55 class AudioDecoderPcmUMultiCh : public AudioDecoderPcmU { |
| 56 public: |
| 57 explicit AudioDecoderPcmUMultiCh(size_t channels) |
| 58 : AudioDecoderPcmU(), channels_(channels) { |
| 59 RTC_DCHECK_GT(channels, 0u); |
| 60 } |
| 61 size_t Channels() const override; |
| 62 |
| 63 private: |
| 64 const size_t channels_; |
| 65 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderPcmUMultiCh); |
| 66 }; |
| 67 |
| 68 class AudioDecoderPcmAMultiCh : public AudioDecoderPcmA { |
| 69 public: |
| 70 explicit AudioDecoderPcmAMultiCh(size_t channels) |
| 71 : AudioDecoderPcmA(), channels_(channels) { |
| 72 RTC_DCHECK_GT(channels, 0u); |
| 73 } |
| 74 size_t Channels() const override; |
| 75 |
| 76 private: |
| 77 const size_t channels_; |
| 78 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderPcmAMultiCh); |
| 79 }; |
| 80 |
| 81 } // namespace webrtc |
| 82 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_G711_INCLUDE_AUDIO_DECODER_PCM_H_ |
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