The Tor Browser / file comparison
comparison: content/media/omx/AudioSink.h
content/media/omx/AudioSink.h
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:79ed582fa73e |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ | |
| 3 /* | |
| 4 * Copyright (c) 2014 The Linux Foundation. All rights reserved. | |
| 5 * Copyright (C) 2007 The Android Open Source Project | |
| 6 * | |
| 7 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 8 * you may not use this file except in compliance with the License. | |
| 9 * You may obtain a copy of the License at | |
| 10 * | |
| 11 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 12 * | |
| 13 * Unless required by applicable law or agreed to in writing, software | |
| 14 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 16 * See the License for the specific language governing permissions and | |
| 17 * limitations under the License. | |
| 18 */ | |
| 19 | |
| 20 #ifndef AUDIO_SINK_H_ | |
| 21 #define AUDIO_SINK_H_ | |
| 22 | |
| 23 #include <utils/Errors.h> | |
| 24 #include <utils/String8.h> | |
| 25 #include <system/audio.h> | |
| 26 | |
| 27 #define DEFAULT_AUDIOSINK_BUFFERCOUNT 4 | |
| 28 #define DEFAULT_AUDIOSINK_BUFFERSIZE 1200 | |
| 29 #define DEFAULT_AUDIOSINK_SAMPLERATE 44100 | |
| 30 | |
| 31 // when the channel mask isn't known, use the channel count to derive a mask in | |
| 32 // AudioSink::open() | |
| 33 #define CHANNEL_MASK_USE_CHANNEL_ORDER 0 | |
| 34 | |
| 35 namespace mozilla { | |
| 36 | |
| 37 /** | |
| 38 * AudioSink: abstraction layer for audio output | |
| 39 * Stripped version of Android KK MediaPlayerBase::AudioSink class | |
| 40 */ | |
| 41 | |
| 42 class AudioSink : public android::RefBase | |
| 43 { | |
| 44 typedef android::String8 String8; | |
| 45 typedef android::status_t status_t; | |
| 46 | |
| 47 public: | |
| 48 enum cb_event_t { | |
| 49 CB_EVENT_FILL_BUFFER, // Request to write more data to buffer. | |
| 50 CB_EVENT_STREAM_END, // Sent after all the buffers queued in AF and HW | |
| 51 // are played back (after stop is called) | |
| 52 CB_EVENT_TEAR_DOWN // The AudioTrack was invalidated due to usecase | |
| 53 // change. Need to re-evaluate offloading options | |
| 54 }; | |
| 55 | |
| 56 // Callback returns the number of bytes actually written to the buffer. | |
| 57 typedef size_t (*AudioCallback)(AudioSink* aAudioSink, | |
| 58 void* aBuffer, | |
| 59 size_t aSize, | |
| 60 void* aCookie, | |
| 61 cb_event_t aEvent); | |
| 62 virtual ~AudioSink() {} | |
| 63 virtual ssize_t FrameSize() const = 0; | |
| 64 virtual status_t GetPosition(uint32_t* aPosition) const = 0; | |
| 65 virtual status_t SetVolume(float aVolume) const = 0; | |
| 66 virtual status_t SetParameters(const String8& aKeyValuePairs) | |
| 67 { | |
| 68 return android::NO_ERROR; | |
| 69 } | |
| 70 | |
| 71 virtual status_t Open(uint32_t aSampleRate, | |
| 72 int aChannelCount, | |
| 73 audio_channel_mask_t aChannelMask, | |
| 74 audio_format_t aFormat=AUDIO_FORMAT_PCM_16_BIT, | |
| 75 AudioCallback aCb = nullptr, | |
| 76 void* aCookie = nullptr, | |
| 77 audio_output_flags_t aFlags = AUDIO_OUTPUT_FLAG_NONE, | |
| 78 const audio_offload_info_t* aOffloadInfo = nullptr) = 0; | |
| 79 | |
| 80 virtual status_t Start() = 0; | |
| 81 virtual void Stop() = 0; | |
| 82 virtual void Flush() = 0; | |
| 83 virtual void Pause() = 0; | |
| 84 virtual void Close() = 0; | |
| 85 }; | |
| 86 | |
| 87 } // namespace mozilla | |
| 88 | |
| 89 #endif // AUDIO_SINK_H_ |
