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Side by Side Diff: webrtc/modules/audio_coding/codecs/g711/include/audio_encoder_pcm.h

Issue 1438663003: modules/audio_coding: Remove some codec include dirs (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Rebase again Created 5 years, 1 month ago
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1 /*
2 * Copyright (c) 2014 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_ENCODER_PCM_H_
12 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_G711_INCLUDE_AUDIO_ENCODER_PCM_H_
13
14 #include <vector>
15
16 #include "webrtc/base/scoped_ptr.h"
17 #include "webrtc/modules/audio_coding/codecs/audio_encoder.h"
18
19 namespace webrtc {
20
21 class AudioEncoderPcm : public AudioEncoder {
22 public:
23 struct Config {
24 public:
25 bool IsOk() const;
26
27 int frame_size_ms;
28 int num_channels;
29 int payload_type;
30
31 protected:
32 explicit Config(int pt)
33 : frame_size_ms(20), num_channels(1), payload_type(pt) {}
34 };
35
36 ~AudioEncoderPcm() override;
37
38 size_t MaxEncodedBytes() const override;
39 int SampleRateHz() const override;
40 int NumChannels() const override;
41 size_t Num10MsFramesInNextPacket() const override;
42 size_t Max10MsFramesInAPacket() const override;
43 int GetTargetBitrate() const override;
44 EncodedInfo EncodeInternal(uint32_t rtp_timestamp,
45 rtc::ArrayView<const int16_t> audio,
46 size_t max_encoded_bytes,
47 uint8_t* encoded) override;
48 void Reset() override;
49
50 protected:
51 AudioEncoderPcm(const Config& config, int sample_rate_hz);
52
53 virtual size_t EncodeCall(const int16_t* audio,
54 size_t input_len,
55 uint8_t* encoded) = 0;
56
57 virtual int BytesPerSample() const = 0;
58
59 private:
60 const int sample_rate_hz_;
61 const int num_channels_;
62 const int payload_type_;
63 const size_t num_10ms_frames_per_packet_;
64 const size_t full_frame_samples_;
65 std::vector<int16_t> speech_buffer_;
66 uint32_t first_timestamp_in_buffer_;
67 };
68
69 struct CodecInst;
70
71 class AudioEncoderPcmA final : public AudioEncoderPcm {
72 public:
73 struct Config : public AudioEncoderPcm::Config {
74 Config() : AudioEncoderPcm::Config(8) {}
75 };
76
77 explicit AudioEncoderPcmA(const Config& config)
78 : AudioEncoderPcm(config, kSampleRateHz) {}
79 explicit AudioEncoderPcmA(const CodecInst& codec_inst);
80
81 protected:
82 size_t EncodeCall(const int16_t* audio,
83 size_t input_len,
84 uint8_t* encoded) override;
85
86 int BytesPerSample() const override;
87
88 private:
89 static const int kSampleRateHz = 8000;
90 RTC_DISALLOW_COPY_AND_ASSIGN(AudioEncoderPcmA);
91 };
92
93 class AudioEncoderPcmU final : public AudioEncoderPcm {
94 public:
95 struct Config : public AudioEncoderPcm::Config {
96 Config() : AudioEncoderPcm::Config(0) {}
97 };
98
99 explicit AudioEncoderPcmU(const Config& config)
100 : AudioEncoderPcm(config, kSampleRateHz) {}
101 explicit AudioEncoderPcmU(const CodecInst& codec_inst);
102
103 protected:
104 size_t EncodeCall(const int16_t* audio,
105 size_t input_len,
106 uint8_t* encoded) override;
107
108 int BytesPerSample() const override;
109
110 private:
111 static const int kSampleRateHz = 8000;
112 RTC_DISALLOW_COPY_AND_ASSIGN(AudioEncoderPcmU);
113 };
114
115 } // namespace webrtc
116
117 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_G711_INCLUDE_AUDIO_ENCODER_PCM_H_
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