Cheney Ni | aef115f | 2018-11-07 08:41:55 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #pragma once |
| 18 | |
| 19 | #include <hardware/audio.h> |
| 20 | #include <system/audio.h> |
| 21 | |
| 22 | #include "device_port_proxy.h" |
| 23 | |
| 24 | constexpr unsigned int kBluetoothDefaultSampleRate = 44100; |
| 25 | constexpr audio_format_t kBluetoothDefaultAudioFormatBitsPerSample = |
| 26 | AUDIO_FORMAT_PCM_16_BIT; |
| 27 | |
| 28 | constexpr unsigned int kBluetoothDefaultInputBufferMs = 20; |
| 29 | |
| 30 | constexpr unsigned int kBluetoothDefaultOutputBufferMs = 10; |
| 31 | constexpr audio_channel_mask_t kBluetoothDefaultOutputChannelModeMask = |
| 32 | AUDIO_CHANNEL_OUT_STEREO; |
| 33 | |
| 34 | enum class BluetoothStreamState : uint8_t { |
| 35 | DISABLED = 0, // This stream is closing or set param "suspend=true" |
| 36 | STANDBY, |
| 37 | STARTING, |
| 38 | STARTED, |
| 39 | SUSPENDING, |
| 40 | UNKNOWN, |
| 41 | }; |
| 42 | |
| 43 | std::ostream& operator<<(std::ostream& os, const BluetoothStreamState& state); |
| 44 | |
| 45 | struct BluetoothStreamOut { |
| 46 | // Must be the first member so it can be cast from audio_stream |
| 47 | // or audio_stream_out pointer |
| 48 | audio_stream_out stream_out_; |
| 49 | ::android::bluetooth::audio::BluetoothAudioPortOut bluetooth_output_; |
| 50 | int64_t last_write_time_us_; |
| 51 | // Audio PCM Configs |
| 52 | uint32_t sample_rate_; |
| 53 | audio_channel_mask_t channel_mask_; |
| 54 | audio_format_t format_; |
| 55 | // frame is the number of samples per channel |
| 56 | // frames count per tick |
| 57 | size_t frames_count_; |
| 58 | // total frames written, reset on standby |
| 59 | uint64_t frames_rendered_; |
| 60 | // total frames written after opened, never reset |
| 61 | uint64_t frames_presented_; |
| 62 | mutable std::mutex mutex_; |
| 63 | }; |
| 64 | |
| 65 | int adev_open_output_stream(struct audio_hw_device* dev, |
| 66 | audio_io_handle_t handle, audio_devices_t devices, |
| 67 | audio_output_flags_t flags, |
| 68 | struct audio_config* config, |
| 69 | struct audio_stream_out** stream_out, |
| 70 | const char* address __unused); |
| 71 | |
| 72 | void adev_close_output_stream(struct audio_hw_device* dev, |
| 73 | struct audio_stream_out* stream); |
| 74 | |
| 75 | size_t adev_get_input_buffer_size(const struct audio_hw_device* dev, |
| 76 | const struct audio_config* config); |
| 77 | |
| 78 | int adev_open_input_stream(struct audio_hw_device* dev, |
| 79 | audio_io_handle_t handle, audio_devices_t devices, |
| 80 | struct audio_config* config, |
| 81 | struct audio_stream_in** stream_in, |
| 82 | audio_input_flags_t flags __unused, |
| 83 | const char* address __unused, |
| 84 | audio_source_t source __unused); |
| 85 | |
| 86 | void adev_close_input_stream(struct audio_hw_device* dev, |
| 87 | struct audio_stream_in* in); |