#include "SDLAudioPlayer.h"
#include "spdlog/spdlog.h"

namespace Ship {
      bool SDLAudioPlayer::Init(void) {
            if (SDL_Init(SDL_INIT_AUDIO) != 0) {
                  SPDLOG_ERROR("SDL init error: %s\n", SDL_GetError());
                  return false;
            }
            SDL_AudioSpec want, have;
            SDL_zero(want);
            want.freq = this->GetSampleRate();
            want.format = AUDIO_S16;
            want.channels = 2;
            want.samples = 1024;
            want.callback = NULL;
            Device = SDL_OpenAudioDevice(NULL, 0, &want, &have, 0);
            if (Device == 0) {
                  SPDLOG_ERROR("SDL_OpenAudio error: {}", SDL_GetError());
                  return false;
            }
            SDL_PauseAudioDevice(Device, 0);
            return true;
      }

      int SDLAudioPlayer::Buffered(void) {
            // 4 is sizeof(int16_t) * num_channels (2 for stereo)
            return SDL_GetQueuedAudioSize(Device) / 4;
      }

      int SDLAudioPlayer::GetDesiredBuffered(void) {
            return 2480;
      }

      void SDLAudioPlayer::Play(const uint8_t* Buffer, uint32_t BufferLen) {
            if (Buffered() < 6000) {
                  // Don't fill the audio buffer too much in case this happens
                  SDL_QueueAudio(Device, Buffer, BufferLen);
            }
      }
}