jacqueline
3 years ago
parent
efd5392f6c
commit
4fc5f931ac
@ -1,5 +1,15 @@ |
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idf_component_register( |
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SRCS "gay-ipod-fw.cpp" "dac.cpp" "gpio-expander.cpp" "battery.cpp" "storage.cpp" "i2c.cpp" |
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INCLUDE_DIRS "." |
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REQUIRES "esp_adc_cal" "fatfs" "audio_pipeline" "audio_stream" "result" |
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) |
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idf_component_register(SRCS |
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"gay-ipod-fw.cpp" |
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"dac.cpp" |
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"gpio-expander.cpp" |
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"battery.cpp" |
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"storage.cpp" |
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"i2c.cpp" |
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"playback.cpp" INCLUDE_DIRS "." REQUIRES |
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"esp_adc_cal" |
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"fatfs" |
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"audio_pipeline" |
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"audio_stream" |
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"result") |
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target_compile_options(${COMPONENT_LIB} PRIVATE - |
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DRESULT_DISABLE_EXCEPTIONS) |
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@ -0,0 +1,224 @@ |
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#include "playback.h" |
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#include <cstdint> |
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#include "audio_element.h" |
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#include "audio_event_iface.h" |
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#include "audio_pipeline.h" |
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#include "dac.h" |
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#include "driver/i2s.h" |
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#include "esp_err.h" |
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#include "mp3_decoder.h" |
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static const char* kTag = "PLAYBACK"; |
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static const i2s_port_t kI2SPort = I2S_NUM_0; |
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namespace gay_ipod { |
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// Static functions for interrop with the ESP IDF API, which requires a
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// function pointer.
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namespace callback { |
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static DacAudioPlayback* instance = nullptr; |
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// Fits the required function pointer signature, but just delegates to the
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// wrapper function. Does that make this the wrapper? Who knows.
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__attribute__((unused)) // (gcc incorrectly thinks this is unused)
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static esp_err_t |
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on_event(audio_event_iface_msg_t* event, void* data) { |
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if (instance == nullptr) { |
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ESP_LOGW(kTag, "uncaught ADF event, type %x", event->cmd); |
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return ESP_OK; |
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} |
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return instance->HandleEvent(event, data); |
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} |
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} // namespace callback
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auto DacAudioPlayback::create(AudioDac* dac) |
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-> cpp::result<std::unique_ptr<DacAudioPlayback>, Error> { |
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assert(callback::instance == nullptr); |
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// Ensure we're soft-muted before initialising, in order to reduce protential
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// clicks and pops.
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dac->WriteVolume(255); |
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audio_pipeline_handle_t pipeline; |
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audio_element_handle_t fatfs_stream_reader; |
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audio_element_handle_t i2s_stream_writer; |
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audio_event_iface_handle_t event_interface; |
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audio_pipeline_cfg_t pipeline_config = |
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audio_pipeline_cfg_t(DEFAULT_AUDIO_PIPELINE_CONFIG()); |
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pipeline = audio_pipeline_init(&pipeline_config); |
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if (pipeline == NULL) { |
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return cpp::fail(Error::PIPELINE_INIT); |
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} |
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fatfs_stream_cfg_t fatfs_stream_config = |
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fatfs_stream_cfg_t(FATFS_STREAM_CFG_DEFAULT()); |
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fatfs_stream_config.type = AUDIO_STREAM_READER; |
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fatfs_stream_reader = fatfs_stream_init(&fatfs_stream_config); |
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if (fatfs_stream_reader == NULL) { |
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return cpp::fail(Error::PIPELINE_INIT); |
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} |
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i2s_stream_cfg_t i2s_stream_config = i2s_stream_cfg_t{ |
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.type = AUDIO_STREAM_WRITER, |
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.i2s_config = |
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{ |
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// static_cast bc esp-adf uses enums incorrectly
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.mode = static_cast<i2s_mode_t>(I2S_MODE_MASTER | I2S_MODE_TX), |
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.sample_rate = 44100, |
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.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT, |
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.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT, |
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.communication_format = I2S_COMM_FORMAT_STAND_I2S, |
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.intr_alloc_flags = ESP_INTR_FLAG_LOWMED, |
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.dma_buf_count = 8, |
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.dma_buf_len = 64, |
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.use_apll = false, |
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.tx_desc_auto_clear = false, |
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.fixed_mclk = 0, |
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.mclk_multiple = I2S_MCLK_MULTIPLE_DEFAULT, |
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.bits_per_chan = I2S_BITS_PER_CHAN_DEFAULT, |
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}, |
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.i2s_port = kI2SPort, |
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.use_alc = false, |
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.volume = 0, // Does nothing; use AudioDac to change this.
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.out_rb_size = I2S_STREAM_RINGBUFFER_SIZE, |
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.task_stack = I2S_STREAM_TASK_STACK, |
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.task_core = I2S_STREAM_TASK_CORE, |
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.task_prio = I2S_STREAM_TASK_PRIO, |
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.stack_in_ext = false, |
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.multi_out_num = 0, |
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.uninstall_drv = true, |
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.need_expand = false, |
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.expand_src_bits = I2S_BITS_PER_SAMPLE_16BIT, |
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}; |
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i2s_stream_writer = i2s_stream_init(&i2s_stream_config); |
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if (i2s_stream_writer == NULL) { |
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return cpp::fail(Error::PIPELINE_INIT); |
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} |
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// NOTE: i2s_stream_init does some additional setup that hardcodes MCK as
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// GPIO0. This happens to work fine for us, but be careful if changing.
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i2s_pin_config_t pin_config = {.mck_io_num = GPIO_NUM_0, |
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.bck_io_num = GPIO_NUM_26, |
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.ws_io_num = GPIO_NUM_27, |
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.data_out_num = GPIO_NUM_5, |
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.data_in_num = I2S_PIN_NO_CHANGE}; |
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if (esp_err_t err = i2s_set_pin(kI2SPort, &pin_config) != ESP_OK) { |
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ESP_LOGE(kTag, "failed to configure i2s pins %x", err); |
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return cpp::fail(Error::PIPELINE_INIT); |
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} |
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// TODO: Create encoders dynamically when we need them.
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audio_element_handle_t mp3_decoder; |
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mp3_decoder_cfg_t mp3_config = |
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mp3_decoder_cfg_t(DEFAULT_MP3_DECODER_CONFIG()); |
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mp3_decoder = mp3_decoder_init(&mp3_config); |
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assert(mp3_decoder != NULL); |
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audio_event_iface_cfg_t event_config = AUDIO_EVENT_IFACE_DEFAULT_CFG(); |
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event_config.on_cmd = &callback::on_event; |
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event_interface = audio_event_iface_init(&event_config); |
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audio_pipeline_set_listener(pipeline, event_interface); |
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// TODO: most of this is likely post-init, since it involves a decoder.
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// All the elements of our pipeline have been initialised. Now switch them
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// together.
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audio_pipeline_register(pipeline, fatfs_stream_reader, "file"); |
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audio_pipeline_register(pipeline, mp3_decoder, "dec"); |
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audio_pipeline_register(pipeline, i2s_stream_writer, "i2s"); |
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const char* link_tag[3] = {"file", "dec", "i2s"}; |
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audio_pipeline_link(pipeline, &link_tag[0], 3); |
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return std::make_unique<DacAudioPlayback>(dac, pipeline, fatfs_stream_reader, |
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i2s_stream_writer, event_interface, |
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mp3_decoder); |
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} |
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DacAudioPlayback::DacAudioPlayback(AudioDac* dac, |
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audio_pipeline_handle_t pipeline, |
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audio_element_handle_t fatfs_stream_reader, |
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audio_element_handle_t i2s_stream_writer, |
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audio_event_iface_handle_t event_interface, |
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audio_element_handle_t mp3_decoder) |
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: dac_(dac), |
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pipeline_(pipeline), |
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fatfs_stream_reader_(fatfs_stream_reader), |
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i2s_stream_writer_(i2s_stream_writer), |
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event_interface_(event_interface), |
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mp3_decoder_(mp3_decoder) { |
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callback::instance = this; |
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} |
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DacAudioPlayback::~DacAudioPlayback() { |
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dac_->WriteVolume(255); |
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audio_pipeline_remove_listener(pipeline_); |
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callback::instance = nullptr; |
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audio_pipeline_stop(pipeline_); |
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audio_pipeline_wait_for_stop(pipeline_); |
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audio_pipeline_terminate(pipeline_); |
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audio_pipeline_unregister(pipeline_, fatfs_stream_reader_); |
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audio_pipeline_unregister(pipeline_, mp3_decoder_); |
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audio_pipeline_unregister(pipeline_, i2s_stream_writer_); |
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audio_event_iface_destroy(event_interface_); |
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audio_pipeline_deinit(pipeline_); |
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audio_element_deinit(fatfs_stream_reader_); |
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audio_element_deinit(i2s_stream_writer_); |
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audio_element_deinit(mp3_decoder_); |
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} |
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void DacAudioPlayback::Play(const std::string& filename) { |
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dac_->WriteVolume(255); |
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// TODO: handle reconfiguring the pipeline if needed.
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audio_element_set_uri(fatfs_stream_reader_, filename.c_str()); |
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audio_pipeline_run(pipeline_); |
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dac_->WriteVolume(volume_); |
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} |
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void DacAudioPlayback::Resume() { |
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// TODO.
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} |
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void DacAudioPlayback::Pause() { |
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// TODO.
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} |
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void DacAudioPlayback::WaitForSongEnd() { |
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while (1) { |
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audio_element_state_t state = audio_element_get_state(i2s_stream_writer_); |
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if (state == AEL_STATE_FINISHED) { |
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return; |
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} |
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vTaskDelay(pdMS_TO_TICKS(1000)); |
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} |
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} |
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/* for gapless */ |
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void DacAudioPlayback::set_next_file(const std::string& filename) { |
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next_filename_ = filename; |
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} |
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void DacAudioPlayback::set_volume(uint8_t volume) { |
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volume_ = volume; |
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// TODO: don't write immediately if we're muting to change track or similar.
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dac_->WriteVolume(volume); |
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} |
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auto DacAudioPlayback::volume() -> uint8_t { |
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return volume_; |
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} |
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auto DacAudioPlayback::HandleEvent(audio_event_iface_msg_t* event, void* data) |
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-> esp_err_t { |
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ESP_LOGI(kTag, "got event!"); |
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return ESP_OK; |
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} |
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} // namespace gay_ipod
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@ -0,0 +1,68 @@ |
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#pragma once |
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#include <cstdint> |
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#include <memory> |
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#include <string> |
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#include "audio_common.h" |
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#include "audio_element.h" |
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#include "audio_event_iface.h" |
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#include "audio_pipeline.h" |
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#include "dac.h" |
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#include "esp_err.h" |
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#include "fatfs_stream.h" |
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#include "i2s_stream.h" |
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#include "result.hpp" |
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#include "storage.h" |
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namespace gay_ipod { |
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class DacAudioPlayback { |
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public: |
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enum Error { PIPELINE_INIT }; |
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static auto create(AudioDac* dac) |
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-> cpp::result<std::unique_ptr<DacAudioPlayback>, Error>; |
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DacAudioPlayback(AudioDac* dac, |
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audio_pipeline_handle_t pipeline, |
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audio_element_handle_t fatfs_stream_reader, |
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audio_element_handle_t i2s_stream_writer, |
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audio_event_iface_handle_t event_interface, |
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audio_element_handle_t mp3_decoder); |
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~DacAudioPlayback(); |
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void Play(const std::string& filename); |
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void Resume(); |
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void Pause(); |
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// For debug :)
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void WaitForSongEnd(); |
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/* for gapless */ |
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void set_next_file(const std::string& filename); |
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void set_volume(uint8_t volume); |
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auto volume() -> uint8_t; |
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auto HandleEvent(audio_event_iface_msg_t* event, void* data) -> esp_err_t; |
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// Not copyable or movable.
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DacAudioPlayback(const DacAudioPlayback&) = delete; |
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DacAudioPlayback& operator=(const DacAudioPlayback&) = delete; |
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private: |
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AudioDac* dac_; |
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std::mutex playback_lock_; |
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std::string next_filename_; |
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uint8_t volume_; |
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audio_pipeline_handle_t pipeline_; |
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audio_element_handle_t fatfs_stream_reader_; |
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audio_element_handle_t i2s_stream_writer_; |
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audio_event_iface_handle_t event_interface_; |
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audio_element_handle_t mp3_decoder_; |
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}; |
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} // namespace gay_ipod
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