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75 lines
1.7 KiB
75 lines
1.7 KiB
/*
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* Copyright 2023 jacqueline <me@jacqueline.id.au>
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*
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* SPDX-License-Identifier: GPL-3.0-only
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*/
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#include "bt_audio_output.hpp"
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#include <algorithm>
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#include <cstddef>
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#include <cstdint>
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#include <memory>
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#include <variant>
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#include "esp_err.h"
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#include "esp_heap_caps.h"
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#include "freertos/portmacro.h"
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#include "freertos/projdefs.h"
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#include "gpios.hpp"
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#include "i2c.hpp"
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#include "i2s_dac.hpp"
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#include "result.hpp"
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#include "wm8523.hpp"
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static const char* kTag = "BTOUT";
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namespace audio {
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static constexpr size_t kDrainBufferSize = 48 * 1024;
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BluetoothAudioOutput::BluetoothAudioOutput(drivers::Bluetooth* bt)
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: IAudioOutput(kDrainBufferSize, MALLOC_CAP_SPIRAM), bluetooth_(bt) {}
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BluetoothAudioOutput::~BluetoothAudioOutput() {}
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auto BluetoothAudioOutput::SetInUse(bool in_use) -> void {
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if (in_use) {
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bluetooth_->SetSource(stream());
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} else {
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bluetooth_->SetSource(nullptr);
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}
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}
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auto BluetoothAudioOutput::SetVolumeImbalance(int_fast8_t balance) -> void {}
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auto BluetoothAudioOutput::SetVolume(uint_fast8_t percent) -> void {}
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auto BluetoothAudioOutput::GetVolume() -> uint_fast8_t {
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return 50;
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}
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auto BluetoothAudioOutput::AdjustVolumeUp() -> bool {
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return false;
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}
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auto BluetoothAudioOutput::AdjustVolumeDown() -> bool {
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return false;
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}
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auto BluetoothAudioOutput::PrepareFormat(const Format& orig) -> Format {
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// ESP-IDF's current Bluetooth implementation currently handles SBC encoding,
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// but requires a fixed input format.
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return Format{
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.sample_rate = 44100,
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.num_channels = 2,
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.bits_per_sample = 16,
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};
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}
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auto BluetoothAudioOutput::Configure(const Format& fmt) -> void {
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// No configuration necessary; the output format is fixed.
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}
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} // namespace audio
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