media_player.h

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#pragma once
 
#include "esphome/core/entity_base.h"
#include "esphome/core/helpers.h"
 
namespace esphome {
namespace media_player {
 
enum MediaPlayerEntityFeature : uint32_t {
  PAUSE = 1 << 0,
  SEEK = 1 << 1,
  VOLUME_SET = 1 << 2,
  VOLUME_MUTE = 1 << 3,
  PREVIOUS_TRACK = 1 << 4,
  NEXT_TRACK = 1 << 5,
 
  TURN_ON = 1 << 7,
  TURN_OFF = 1 << 8,
  PLAY_MEDIA = 1 << 9,
  VOLUME_STEP = 1 << 10,
  SELECT_SOURCE = 1 << 11,
  STOP = 1 << 12,
  CLEAR_PLAYLIST = 1 << 13,
  PLAY = 1 << 14,
  SHUFFLE_SET = 1 << 15,
  SELECT_SOUND_MODE = 1 << 16,
  BROWSE_MEDIA = 1 << 17,
  REPEAT_SET = 1 << 18,
  GROUPING = 1 << 19,
  MEDIA_ANNOUNCE = 1 << 20,
  MEDIA_ENQUEUE = 1 << 21,
  SEARCH_MEDIA = 1 << 22,
};
 
enum MediaPlayerState : uint8_t {
  MEDIA_PLAYER_STATE_NONE = 0,
  MEDIA_PLAYER_STATE_IDLE = 1,
  MEDIA_PLAYER_STATE_PLAYING = 2,
  MEDIA_PLAYER_STATE_PAUSED = 3,
  MEDIA_PLAYER_STATE_ANNOUNCING = 4,
  MEDIA_PLAYER_STATE_OFF = 5,
  MEDIA_PLAYER_STATE_ON = 6,
};
const char *media_player_state_to_string(MediaPlayerState state);
 
enum MediaPlayerCommand : uint8_t {
  MEDIA_PLAYER_COMMAND_PLAY = 0,
  MEDIA_PLAYER_COMMAND_PAUSE = 1,
  MEDIA_PLAYER_COMMAND_STOP = 2,
  MEDIA_PLAYER_COMMAND_MUTE = 3,
  MEDIA_PLAYER_COMMAND_UNMUTE = 4,
  MEDIA_PLAYER_COMMAND_TOGGLE = 5,
  MEDIA_PLAYER_COMMAND_VOLUME_UP = 6,
  MEDIA_PLAYER_COMMAND_VOLUME_DOWN = 7,
  MEDIA_PLAYER_COMMAND_ENQUEUE = 8,
  MEDIA_PLAYER_COMMAND_REPEAT_ONE = 9,
  MEDIA_PLAYER_COMMAND_REPEAT_OFF = 10,
  MEDIA_PLAYER_COMMAND_CLEAR_PLAYLIST = 11,
  MEDIA_PLAYER_COMMAND_TURN_ON = 12,
  MEDIA_PLAYER_COMMAND_TURN_OFF = 13,
};
const char *media_player_command_to_string(MediaPlayerCommand command);
 
enum class MediaPlayerFormatPurpose : uint8_t {
  PURPOSE_DEFAULT = 0,
  PURPOSE_ANNOUNCEMENT = 1,
};
 
struct MediaPlayerSupportedFormat {
  std::string format;
  uint32_t sample_rate;
  uint32_t num_channels;
  MediaPlayerFormatPurpose purpose;
  uint32_t sample_bytes;
};
 
class MediaPlayer;
 
class MediaPlayerTraits {
 public:
  MediaPlayerTraits() = default;
 
  void set_supports_pause(bool supports_pause) { this->supports_pause_ = supports_pause; }
  bool get_supports_pause() const { return this->supports_pause_; }
 
  void set_supports_turn_off_on(bool supports_turn_off_on) { this->supports_turn_off_on_ = supports_turn_off_on; }
  bool get_supports_turn_off_on() const { return this->supports_turn_off_on_; }
 
  std::vector<MediaPlayerSupportedFormat> &get_supported_formats() { return this->supported_formats_; }
 
  uint32_t get_feature_flags() const {
    uint32_t flags = 0;
    flags |= MediaPlayerEntityFeature::PLAY_MEDIA | MediaPlayerEntityFeature::BROWSE_MEDIA |
             MediaPlayerEntityFeature::STOP | MediaPlayerEntityFeature::VOLUME_SET |
             MediaPlayerEntityFeature::VOLUME_MUTE | MediaPlayerEntityFeature::MEDIA_ANNOUNCE;
    if (this->get_supports_pause()) {
      flags |= MediaPlayerEntityFeature::PAUSE | MediaPlayerEntityFeature::PLAY;
    }
    if (this->get_supports_turn_off_on()) {
      flags |= MediaPlayerEntityFeature::TURN_OFF | MediaPlayerEntityFeature::TURN_ON;
    }
    return flags;
  }
 
 protected:
  std::vector<MediaPlayerSupportedFormat> supported_formats_{};
  bool supports_pause_{false};
  bool supports_turn_off_on_{false};
};
 
class MediaPlayerCall {
 public:
  MediaPlayerCall(MediaPlayer *parent) : parent_(parent) {}
 
  MediaPlayerCall &set_command(MediaPlayerCommand command);
  MediaPlayerCall &set_command(optional<MediaPlayerCommand> command);
  MediaPlayerCall &set_command(const std::string &command);
 
  MediaPlayerCall &set_media_url(const std::string &url);
 
  MediaPlayerCall &set_volume(float volume);
  MediaPlayerCall &set_announcement(bool announce);
 
  void perform();
 
  const optional<MediaPlayerCommand> &get_command() const { return this->command_; }
  const optional<std::string> &get_media_url() const { return this->media_url_; }
  const optional<float> &get_volume() const { return this->volume_; }
  const optional<bool> &get_announcement() const { return this->announcement_; }
 
 protected:
  void validate_();
  MediaPlayer *const parent_;
  optional<MediaPlayerCommand> command_;
  optional<std::string> media_url_;
  optional<float> volume_;
  optional<bool> announcement_;
};
 
class MediaPlayer : public EntityBase {
 public:
  MediaPlayerState state{MEDIA_PLAYER_STATE_NONE};
  float volume{1.0f};
 
  MediaPlayerCall make_call() { return MediaPlayerCall(this); }
 
  void publish_state();
 
  void add_on_state_callback(std::function<void()> &&callback);
 
  virtual bool is_muted() const { return false; }
 
  virtual MediaPlayerTraits get_traits() = 0;
 
 protected:
  friend MediaPlayerCall;
 
  virtual void control(const MediaPlayerCall &call) = 0;
 
  CallbackManager<void()> state_callback_{};
};
 
}  // namespace media_player
}  // namespace esphome