i2s_audio_speaker_standard.h

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#pragma once
 
#ifdef USE_ESP32
 
#include "i2s_audio_speaker.h"
 
namespace esphome::i2s_audio {
 
enum class I2SCommFmt : uint8_t {
  STANDARD,  // Philips / I2S standard
  PCM,       // PCM short
  MSB,       // MSB / left-justified
};
 
class I2SAudioSpeaker final : public I2SAudioSpeakerBase {
 public:
  void dump_config() override;
 
  void set_i2s_comm_fmt(I2SCommFmt fmt) { this->i2s_comm_fmt_ = fmt; }
 
#ifdef USE_I2S_AUDIO_FULL_DUPLEX
  void build_full_duplex_config(i2s_chan_config_t &chan_cfg, i2s_std_config_t &std_cfg) override;
#endif
 
 protected:
  void run_speaker_task() override;
  esp_err_t start_i2s_driver(audio::AudioStreamInfo &audio_stream_info) override;
 
  void build_i2s_config_(const audio::AudioStreamInfo &output_stream_info, i2s_chan_config_t &chan_cfg,
                         i2s_std_config_t &std_cfg) const;
 
#ifdef USE_I2S_AUDIO_FULL_DUPLEX
  audio::AudioStreamInfo full_duplex_stream_info_() const;
#endif
 
  static uint32_t dma_frame_multiple(const audio::AudioStreamInfo &stream_info) {
    return esp32_mono_swap_needed(stream_info) ? 2 : 1;
  }
 
  I2SCommFmt i2s_comm_fmt_{I2SCommFmt::STANDARD};
};
 
}  // namespace esphome::i2s_audio
 
#endif  // USE_ESP32