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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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32 protected: | 32 protected: |
33 explicit Config(int pt) | 33 explicit Config(int pt) |
34 : frame_size_ms(20), num_channels(1), payload_type(pt) {} | 34 : frame_size_ms(20), num_channels(1), payload_type(pt) {} |
35 }; | 35 }; |
36 | 36 |
37 ~AudioEncoderPcm() override; | 37 ~AudioEncoderPcm() override; |
38 | 38 |
39 int SampleRateHz() const override; | 39 int SampleRateHz() const override; |
40 int NumChannels() const override; | 40 int NumChannels() const override; |
41 size_t MaxEncodedBytes() const override; | 41 size_t MaxEncodedBytes() const override; |
42 int Num10MsFramesInNextPacket() const override; | 42 size_t Num10MsFramesInNextPacket() const override; |
43 int Max10MsFramesInAPacket() const override; | 43 size_t Max10MsFramesInAPacket() const override; |
44 int GetTargetBitrate() const override; | 44 int GetTargetBitrate() const override; |
45 EncodedInfo EncodeInternal(uint32_t rtp_timestamp, | 45 EncodedInfo EncodeInternal(uint32_t rtp_timestamp, |
46 const int16_t* audio, | 46 const int16_t* audio, |
47 size_t max_encoded_bytes, | 47 size_t max_encoded_bytes, |
48 uint8_t* encoded) override; | 48 uint8_t* encoded) override; |
49 | 49 |
50 protected: | 50 protected: |
51 AudioEncoderPcm(const Config& config, int sample_rate_hz); | 51 AudioEncoderPcm(const Config& config, int sample_rate_hz); |
52 | 52 |
53 virtual int16_t EncodeCall(const int16_t* audio, | 53 virtual size_t EncodeCall(const int16_t* audio, |
54 size_t input_len, | 54 size_t input_len, |
55 uint8_t* encoded) = 0; | 55 uint8_t* encoded) = 0; |
56 | 56 |
57 virtual int BytesPerSample() const = 0; | 57 virtual int BytesPerSample() const = 0; |
58 | 58 |
59 private: | 59 private: |
60 const int sample_rate_hz_; | 60 const int sample_rate_hz_; |
61 const int num_channels_; | 61 const int num_channels_; |
62 const int payload_type_; | 62 const int payload_type_; |
63 const int num_10ms_frames_per_packet_; | 63 const size_t num_10ms_frames_per_packet_; |
64 const size_t full_frame_samples_; | 64 const size_t full_frame_samples_; |
65 std::vector<int16_t> speech_buffer_; | 65 std::vector<int16_t> speech_buffer_; |
66 uint32_t first_timestamp_in_buffer_; | 66 uint32_t first_timestamp_in_buffer_; |
67 }; | 67 }; |
68 | 68 |
69 class AudioEncoderPcmA final : public AudioEncoderPcm { | 69 class AudioEncoderPcmA final : public AudioEncoderPcm { |
70 public: | 70 public: |
71 struct Config : public AudioEncoderPcm::Config { | 71 struct Config : public AudioEncoderPcm::Config { |
72 Config() : AudioEncoderPcm::Config(8) {} | 72 Config() : AudioEncoderPcm::Config(8) {} |
73 }; | 73 }; |
74 | 74 |
75 explicit AudioEncoderPcmA(const Config& config) | 75 explicit AudioEncoderPcmA(const Config& config) |
76 : AudioEncoderPcm(config, kSampleRateHz) {} | 76 : AudioEncoderPcm(config, kSampleRateHz) {} |
77 | 77 |
78 protected: | 78 protected: |
79 int16_t EncodeCall(const int16_t* audio, | 79 size_t EncodeCall(const int16_t* audio, |
80 size_t input_len, | 80 size_t input_len, |
81 uint8_t* encoded) override; | 81 uint8_t* encoded) override; |
82 | 82 |
83 int BytesPerSample() const override; | 83 int BytesPerSample() const override; |
84 | 84 |
85 private: | 85 private: |
86 static const int kSampleRateHz = 8000; | 86 static const int kSampleRateHz = 8000; |
87 }; | 87 }; |
88 | 88 |
89 class AudioEncoderPcmU final : public AudioEncoderPcm { | 89 class AudioEncoderPcmU final : public AudioEncoderPcm { |
90 public: | 90 public: |
91 struct Config : public AudioEncoderPcm::Config { | 91 struct Config : public AudioEncoderPcm::Config { |
92 Config() : AudioEncoderPcm::Config(0) {} | 92 Config() : AudioEncoderPcm::Config(0) {} |
93 }; | 93 }; |
94 | 94 |
95 explicit AudioEncoderPcmU(const Config& config) | 95 explicit AudioEncoderPcmU(const Config& config) |
96 : AudioEncoderPcm(config, kSampleRateHz) {} | 96 : AudioEncoderPcm(config, kSampleRateHz) {} |
97 | 97 |
98 protected: | 98 protected: |
99 int16_t EncodeCall(const int16_t* audio, | 99 size_t EncodeCall(const int16_t* audio, |
100 size_t input_len, | 100 size_t input_len, |
101 uint8_t* encoded) override; | 101 uint8_t* encoded) override; |
102 | 102 |
103 int BytesPerSample() const override; | 103 int BytesPerSample() const override; |
104 | 104 |
105 private: | 105 private: |
106 static const int kSampleRateHz = 8000; | 106 static const int kSampleRateHz = 8000; |
107 }; | 107 }; |
108 | 108 |
109 struct CodecInst; | 109 struct CodecInst; |
110 | 110 |
111 class AudioEncoderMutablePcmU | 111 class AudioEncoderMutablePcmU |
112 : public AudioEncoderMutableImpl<AudioEncoderPcmU> { | 112 : public AudioEncoderMutableImpl<AudioEncoderPcmU> { |
113 public: | 113 public: |
114 explicit AudioEncoderMutablePcmU(const CodecInst& codec_inst); | 114 explicit AudioEncoderMutablePcmU(const CodecInst& codec_inst); |
115 }; | 115 }; |
116 | 116 |
117 class AudioEncoderMutablePcmA | 117 class AudioEncoderMutablePcmA |
118 : public AudioEncoderMutableImpl<AudioEncoderPcmA> { | 118 : public AudioEncoderMutableImpl<AudioEncoderPcmA> { |
119 public: | 119 public: |
120 explicit AudioEncoderMutablePcmA(const CodecInst& codec_inst); | 120 explicit AudioEncoderMutablePcmA(const CodecInst& codec_inst); |
121 }; | 121 }; |
122 | 122 |
123 } // namespace webrtc | 123 } // namespace webrtc |
124 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_G711_INCLUDE_AUDIO_ENCODER_PCM_H_ | 124 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_G711_INCLUDE_AUDIO_ENCODER_PCM_H_ |
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