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1 /* | 1 /* |
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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23 | 23 |
24 // Deleter for use with unique_ptr. | 24 // Deleter for use with unique_ptr. |
25 struct CngInstDeleter { | 25 struct CngInstDeleter { |
26 void operator()(CNG_enc_inst* ptr) const { WebRtcCng_FreeEnc(ptr); } | 26 void operator()(CNG_enc_inst* ptr) const { WebRtcCng_FreeEnc(ptr); } |
27 }; | 27 }; |
28 | 28 |
29 class Vad; | 29 class Vad; |
30 | 30 |
31 class AudioEncoderCng final : public AudioEncoder { | 31 class AudioEncoderCng final : public AudioEncoder { |
32 public: | 32 public: |
33 using AudioEncoder::EncodeInternal; | |
34 | |
35 struct Config { | 33 struct Config { |
36 bool IsOk() const; | 34 bool IsOk() const; |
37 | 35 |
38 size_t num_channels = 1; | 36 size_t num_channels = 1; |
39 int payload_type = 13; | 37 int payload_type = 13; |
40 // Caller keeps ownership of the AudioEncoder object. | 38 // Caller keeps ownership of the AudioEncoder object. |
41 AudioEncoder* speech_encoder = nullptr; | 39 AudioEncoder* speech_encoder = nullptr; |
42 Vad::Aggressiveness vad_mode = Vad::kVadNormal; | 40 Vad::Aggressiveness vad_mode = Vad::kVadNormal; |
43 int sid_frame_interval_ms = 100; | 41 int sid_frame_interval_ms = 100; |
44 int num_cng_coefficients = 8; | 42 int num_cng_coefficients = 8; |
45 // The Vad pointer is mainly for testing. If a NULL pointer is passed, the | 43 // The Vad pointer is mainly for testing. If a NULL pointer is passed, the |
46 // AudioEncoderCng creates (and destroys) a Vad object internally. If an | 44 // AudioEncoderCng creates (and destroys) a Vad object internally. If an |
47 // object is passed, the AudioEncoderCng assumes ownership of the Vad | 45 // object is passed, the AudioEncoderCng assumes ownership of the Vad |
48 // object. | 46 // object. |
49 Vad* vad = nullptr; | 47 Vad* vad = nullptr; |
50 }; | 48 }; |
51 | 49 |
52 explicit AudioEncoderCng(const Config& config); | 50 explicit AudioEncoderCng(const Config& config); |
53 ~AudioEncoderCng() override; | 51 ~AudioEncoderCng() override; |
54 | 52 |
55 size_t MaxEncodedBytes() const override; | 53 size_t MaxEncodedBytes() const override; |
56 int SampleRateHz() const override; | 54 int SampleRateHz() const override; |
57 size_t NumChannels() const override; | 55 size_t NumChannels() const override; |
58 int RtpTimestampRateHz() const override; | 56 int RtpTimestampRateHz() const override; |
59 size_t Num10MsFramesInNextPacket() const override; | 57 size_t Num10MsFramesInNextPacket() const override; |
60 size_t Max10MsFramesInAPacket() const override; | 58 size_t Max10MsFramesInAPacket() const override; |
61 int GetTargetBitrate() const override; | 59 int GetTargetBitrate() const override; |
62 EncodedInfo EncodeInternal(uint32_t rtp_timestamp, | 60 EncodedInfo EncodeImpl(uint32_t rtp_timestamp, |
63 rtc::ArrayView<const int16_t> audio, | 61 rtc::ArrayView<const int16_t> audio, |
64 rtc::Buffer* encoded) override; | 62 rtc::Buffer* encoded) override; |
65 void Reset() override; | 63 void Reset() override; |
66 bool SetFec(bool enable) override; | 64 bool SetFec(bool enable) override; |
67 bool SetDtx(bool enable) override; | 65 bool SetDtx(bool enable) override; |
68 bool SetApplication(Application application) override; | 66 bool SetApplication(Application application) override; |
69 void SetMaxPlaybackRate(int frequency_hz) override; | 67 void SetMaxPlaybackRate(int frequency_hz) override; |
70 void SetProjectedPacketLossRate(double fraction) override; | 68 void SetProjectedPacketLossRate(double fraction) override; |
71 void SetTargetBitrate(int target_bps) override; | 69 void SetTargetBitrate(int target_bps) override; |
72 | 70 |
73 private: | 71 private: |
74 EncodedInfo EncodePassive(size_t frames_to_encode, | 72 EncodedInfo EncodePassive(size_t frames_to_encode, |
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86 bool last_frame_active_; | 84 bool last_frame_active_; |
87 std::unique_ptr<Vad> vad_; | 85 std::unique_ptr<Vad> vad_; |
88 std::unique_ptr<CNG_enc_inst, CngInstDeleter> cng_inst_; | 86 std::unique_ptr<CNG_enc_inst, CngInstDeleter> cng_inst_; |
89 | 87 |
90 RTC_DISALLOW_COPY_AND_ASSIGN(AudioEncoderCng); | 88 RTC_DISALLOW_COPY_AND_ASSIGN(AudioEncoderCng); |
91 }; | 89 }; |
92 | 90 |
93 } // namespace webrtc | 91 } // namespace webrtc |
94 | 92 |
95 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_AUDIO_ENCODER_CNG_H_ | 93 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_AUDIO_ENCODER_CNG_H_ |
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