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Side by Side Diff: webrtc/modules/audio_coding/codecs/audio_decoder.h

Issue 2342443005: Moved Opus-specific payload splitting into AudioDecoderOpus. (Closed)
Patch Set: Priority levels are ints, kHighestPriority is gone. Also small cleanups. Created 4 years, 3 months ago
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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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