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1 /* | 1 /* |
2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2015 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 |
11 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_G722_AUDIO_DECODER_G722_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_G722_AUDIO_DECODER_G722_H_ |
12 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_G722_AUDIO_DECODER_G722_H_ | 12 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_G722_AUDIO_DECODER_G722_H_ |
13 | 13 |
14 #include "webrtc/base/constructormagic.h" | 14 #include "webrtc/base/constructormagic.h" |
15 #include "webrtc/modules/audio_coding/codecs/audio_decoder.h" | 15 #include "webrtc/modules/audio_coding/codecs/audio_decoder.h" |
16 | 16 |
17 typedef struct WebRtcG722DecInst G722DecInst; | 17 typedef struct WebRtcG722DecInst G722DecInst; |
18 | 18 |
19 namespace webrtc { | 19 namespace webrtc { |
20 | 20 |
21 class AudioDecoderG722 final : public AudioDecoder { | 21 class AudioDecoderG722 final : public AudioDecoder { |
22 public: | 22 public: |
23 AudioDecoderG722(); | 23 AudioDecoderG722(); |
24 ~AudioDecoderG722() override; | 24 ~AudioDecoderG722() override; |
25 bool HasDecodePlc() const override; | 25 bool HasDecodePlc() const override; |
26 void Reset() override; | 26 void Reset() override; |
27 std::vector<ParseResult> ParsePayload(rtc::Buffer&& payload, | 27 std::vector<ParseResult> ParsePayload(rtc::Buffer&& payload, |
28 uint32_t timestamp, | 28 uint32_t timestamp) override; |
29 bool is_primary) override; | |
30 int PacketDuration(const uint8_t* encoded, size_t encoded_len) const override; | 29 int PacketDuration(const uint8_t* encoded, size_t encoded_len) const override; |
31 int SampleRateHz() const override; | 30 int SampleRateHz() const override; |
32 size_t Channels() const override; | 31 size_t Channels() const override; |
33 | 32 |
34 protected: | 33 protected: |
35 int DecodeInternal(const uint8_t* encoded, | 34 int DecodeInternal(const uint8_t* encoded, |
36 size_t encoded_len, | 35 size_t encoded_len, |
37 int sample_rate_hz, | 36 int sample_rate_hz, |
38 int16_t* decoded, | 37 int16_t* decoded, |
39 SpeechType* speech_type) override; | 38 SpeechType* speech_type) override; |
40 | 39 |
41 private: | 40 private: |
42 G722DecInst* dec_state_; | 41 G722DecInst* dec_state_; |
43 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderG722); | 42 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderG722); |
44 }; | 43 }; |
45 | 44 |
46 class AudioDecoderG722Stereo final : public AudioDecoder { | 45 class AudioDecoderG722Stereo final : public AudioDecoder { |
47 public: | 46 public: |
48 AudioDecoderG722Stereo(); | 47 AudioDecoderG722Stereo(); |
49 ~AudioDecoderG722Stereo() override; | 48 ~AudioDecoderG722Stereo() override; |
50 void Reset() override; | 49 void Reset() override; |
51 std::vector<ParseResult> ParsePayload(rtc::Buffer&& payload, | 50 std::vector<ParseResult> ParsePayload(rtc::Buffer&& payload, |
52 uint32_t timestamp, | 51 uint32_t timestamp) override; |
53 bool is_primary) override; | |
54 int SampleRateHz() const override; | 52 int SampleRateHz() const override; |
55 size_t Channels() const override; | 53 size_t Channels() const override; |
56 | 54 |
57 protected: | 55 protected: |
58 int DecodeInternal(const uint8_t* encoded, | 56 int DecodeInternal(const uint8_t* encoded, |
59 size_t encoded_len, | 57 size_t encoded_len, |
60 int sample_rate_hz, | 58 int sample_rate_hz, |
61 int16_t* decoded, | 59 int16_t* decoded, |
62 SpeechType* speech_type) override; | 60 SpeechType* speech_type) override; |
63 | 61 |
64 private: | 62 private: |
65 // Splits the stereo-interleaved payload in |encoded| into separate payloads | 63 // Splits the stereo-interleaved payload in |encoded| into separate payloads |
66 // for left and right channels. The separated payloads are written to | 64 // for left and right channels. The separated payloads are written to |
67 // |encoded_deinterleaved|, which must hold at least |encoded_len| samples. | 65 // |encoded_deinterleaved|, which must hold at least |encoded_len| samples. |
68 // The left channel starts at offset 0, while the right channel starts at | 66 // The left channel starts at offset 0, while the right channel starts at |
69 // offset encoded_len / 2 into |encoded_deinterleaved|. | 67 // offset encoded_len / 2 into |encoded_deinterleaved|. |
70 void SplitStereoPacket(const uint8_t* encoded, | 68 void SplitStereoPacket(const uint8_t* encoded, |
71 size_t encoded_len, | 69 size_t encoded_len, |
72 uint8_t* encoded_deinterleaved); | 70 uint8_t* encoded_deinterleaved); |
73 | 71 |
74 G722DecInst* dec_state_left_; | 72 G722DecInst* dec_state_left_; |
75 G722DecInst* dec_state_right_; | 73 G722DecInst* dec_state_right_; |
76 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderG722Stereo); | 74 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoderG722Stereo); |
77 }; | 75 }; |
78 | 76 |
79 } // namespace webrtc | 77 } // namespace webrtc |
80 | 78 |
81 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_G722_AUDIO_DECODER_G722_H_ | 79 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_G722_AUDIO_DECODER_G722_H_ |
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