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| 1 /* | 1 /* |
| 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 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_NETEQ_INCLUDE_AUDIO_DECODER_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_INCLUDE_AUDIO_DECODER_H_ |
| 12 #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_INCLUDE_AUDIO_DECODER_H_ | 12 #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_INCLUDE_AUDIO_DECODER_H_ |
| 13 | 13 |
| 14 #include <memory> | 14 #include <memory> |
|
hlundin-webrtc
2016/09/20 07:02:24
Duplicates.
| |
| 15 #include <vector> | 15 #include <vector> |
| 16 | 16 |
| 17 #include <memory> | 17 #include <memory> |
| 18 #include <vector> | 18 #include <vector> |
| 19 | 19 |
| 20 #include "webrtc/base/array_view.h" | 20 #include "webrtc/base/array_view.h" |
| 21 #include "webrtc/base/buffer.h" | 21 #include "webrtc/base/buffer.h" |
| 22 #include "webrtc/base/constructormagic.h" | 22 #include "webrtc/base/constructormagic.h" |
| 23 #include "webrtc/base/optional.h" | 23 #include "webrtc/base/optional.h" |
| 24 #include "webrtc/typedefs.h" | 24 #include "webrtc/typedefs.h" |
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| 59 // total number of samples across all channels, as well as whether the | 59 // total number of samples across all channels, as well as whether the |
| 60 // decoder produced comfort noise or speech. On failure, returns an empty | 60 // decoder produced comfort noise or speech. On failure, returns an empty |
| 61 // rtc::Optional. Decode may be called at most once per frame object. | 61 // rtc::Optional. Decode may be called at most once per frame object. |
| 62 virtual rtc::Optional<DecodeResult> Decode( | 62 virtual rtc::Optional<DecodeResult> Decode( |
| 63 rtc::ArrayView<int16_t> decoded) const = 0; | 63 rtc::ArrayView<int16_t> decoded) const = 0; |
| 64 }; | 64 }; |
| 65 | 65 |
| 66 struct ParseResult { | 66 struct ParseResult { |
| 67 ParseResult(); | 67 ParseResult(); |
| 68 ParseResult(uint32_t timestamp, | 68 ParseResult(uint32_t timestamp, |
| 69 bool primary, | 69 int priority, |
| 70 std::unique_ptr<EncodedAudioFrame> frame); | 70 std::unique_ptr<EncodedAudioFrame> frame); |
| 71 ParseResult(ParseResult&& b); | 71 ParseResult(ParseResult&& b); |
| 72 ~ParseResult(); | 72 ~ParseResult(); |
| 73 | 73 |
| 74 ParseResult& operator=(ParseResult&& b); | 74 ParseResult& operator=(ParseResult&& b); |
| 75 | 75 |
| 76 // The timestamp of the frame is in samples per channel. | 76 // The timestamp of the frame is in samples per channel. |
| 77 uint32_t timestamp; | 77 uint32_t timestamp; |
| 78 bool primary; | 78 // The relative priority of the frame compared to other frames of the same |
| 79 // payload and the same timeframe. A higher value means a lower priority. | |
| 80 int priority; | |
| 79 std::unique_ptr<EncodedAudioFrame> frame; | 81 std::unique_ptr<EncodedAudioFrame> frame; |
| 80 }; | 82 }; |
| 81 | 83 |
| 82 // Let the decoder parse this payload and prepare zero or more decodable | 84 // Let the decoder parse this payload and prepare zero or more decodable |
| 83 // frames. Each frame must be between 10 ms and 120 ms long. The caller must | 85 // frames. Each frame must be between 10 ms and 120 ms long. The caller must |
| 84 // ensure that the AudioDecoder object outlives any frame objects returned by | 86 // ensure that the AudioDecoder object outlives any frame objects returned by |
| 85 // this call. The decoder is free to swap or move the data from the |payload| | 87 // this call. The decoder is free to swap or move the data from the |payload| |
| 86 // buffer. |timestamp| is the input timestamp, in samples, corresponding to | 88 // buffer. |timestamp| is the input timestamp, in samples, corresponding to |
| 87 // the start of the payload. | 89 // the start of the payload. |
| 88 virtual std::vector<ParseResult> ParsePayload(rtc::Buffer&& payload, | 90 virtual std::vector<ParseResult> ParsePayload(rtc::Buffer&& payload, |
| 89 uint32_t timestamp, | 91 uint32_t timestamp); |
| 90 bool is_primary); | |
| 91 | 92 |
| 92 // Decodes |encode_len| bytes from |encoded| and writes the result in | 93 // Decodes |encode_len| bytes from |encoded| and writes the result in |
| 93 // |decoded|. The maximum bytes allowed to be written into |decoded| is | 94 // |decoded|. The maximum bytes allowed to be written into |decoded| is |
| 94 // |max_decoded_bytes|. Returns the total number of samples across all | 95 // |max_decoded_bytes|. Returns the total number of samples across all |
| 95 // channels. If the decoder produced comfort noise, |speech_type| | 96 // channels. If the decoder produced comfort noise, |speech_type| |
| 96 // is set to kComfortNoise, otherwise it is kSpeech. The desired output | 97 // is set to kComfortNoise, otherwise it is kSpeech. The desired output |
| 97 // sample rate is provided in |sample_rate_hz|, which must be valid for the | 98 // sample rate is provided in |sample_rate_hz|, which must be valid for the |
| 98 // codec at hand. | 99 // codec at hand. |
| 99 int Decode(const uint8_t* encoded, | 100 int Decode(const uint8_t* encoded, |
| 100 size_t encoded_len, | 101 size_t encoded_len, |
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| 171 int sample_rate_hz, | 172 int sample_rate_hz, |
| 172 int16_t* decoded, | 173 int16_t* decoded, |
| 173 SpeechType* speech_type); | 174 SpeechType* speech_type); |
| 174 | 175 |
| 175 private: | 176 private: |
| 176 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoder); | 177 RTC_DISALLOW_COPY_AND_ASSIGN(AudioDecoder); |
| 177 }; | 178 }; |
| 178 | 179 |
| 179 } // namespace webrtc | 180 } // namespace webrtc |
| 180 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_INCLUDE_AUDIO_DECODER_H_ | 181 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_INCLUDE_AUDIO_DECODER_H_ |
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