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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_G722_INCLUDE_AUDIO_ENCODER_G722_H_ | |
12 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_G722_INCLUDE_AUDIO_ENCODER_G722_H_ | |
13 | |
14 #include "webrtc/base/buffer.h" | |
15 #include "webrtc/base/scoped_ptr.h" | |
16 #include "webrtc/modules/audio_coding/codecs/audio_encoder.h" | |
17 #include "webrtc/modules/audio_coding/codecs/g722/include/g722_interface.h" | |
18 | |
19 namespace webrtc { | |
20 | |
21 struct CodecInst; | |
22 | |
23 class AudioEncoderG722 final : public AudioEncoder { | |
24 public: | |
25 struct Config { | |
26 bool IsOk() const; | |
27 | |
28 int payload_type = 9; | |
29 int frame_size_ms = 20; | |
30 int num_channels = 1; | |
31 }; | |
32 | |
33 explicit AudioEncoderG722(const Config& config); | |
34 explicit AudioEncoderG722(const CodecInst& codec_inst); | |
35 ~AudioEncoderG722() override; | |
36 | |
37 size_t MaxEncodedBytes() const override; | |
38 int SampleRateHz() const override; | |
39 int NumChannels() const override; | |
40 int RtpTimestampRateHz() 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 private: | |
51 // The encoder state for one channel. | |
52 struct EncoderState { | |
53 G722EncInst* encoder; | |
54 rtc::scoped_ptr<int16_t[]> speech_buffer; // Queued up for encoding. | |
55 rtc::Buffer encoded_buffer; // Already encoded. | |
56 EncoderState(); | |
57 ~EncoderState(); | |
58 }; | |
59 | |
60 size_t SamplesPerChannel() const; | |
61 | |
62 const int num_channels_; | |
63 const int payload_type_; | |
64 const size_t num_10ms_frames_per_packet_; | |
65 size_t num_10ms_frames_buffered_; | |
66 uint32_t first_timestamp_in_buffer_; | |
67 const rtc::scoped_ptr<EncoderState[]> encoders_; | |
68 rtc::Buffer interleave_buffer_; | |
69 RTC_DISALLOW_COPY_AND_ASSIGN(AudioEncoderG722); | |
70 }; | |
71 | |
72 } // namespace webrtc | |
73 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_G722_INCLUDE_AUDIO_ENCODER_G722_H_ | |
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