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#ifndef MIXER_H_6DF82000
#define MIXER_H_6DF82000
#include <SDL_mixer.h>
#include <cmath>
#include <memory>
#include <stdexcept>
#include <map>
#include <string>
class mix_error : public std::logic_error {
public:
mix_error() : std::logic_error(Mix_GetError())
{
}
};
class mix_wrapper {
public:
mix_wrapper()
{
if (Mix_Init(0) != 0) {
mix_error ex;
Mix_Quit();
throw ex;
}
if (Mix_OpenAudio(MIX_DEFAULT_FREQUENCY, MIX_DEFAULT_FORMAT, 2, 1024) != 0) {
mix_error ex;
Mix_Quit();
throw ex;
}
}
~mix_wrapper()
{
Mix_CloseAudio();
Mix_Quit();
}
};
class chunk_deleter {
public:
void operator()(Mix_Chunk* chunk) {
Mix_FreeChunk(chunk);
}
};
using chunk_ptr = std::unique_ptr<Mix_Chunk, chunk_deleter>;
class music_deleter {
public:
void operator()(Mix_Music* music) {
Mix_FreeMusic(music);
}
};
using music_ptr = std::unique_ptr<Mix_Music, music_deleter>;
// MUST create the Renderer first!
class Mixer {
public:
void playSound(std::string_view filename);
int loopSound(std::string_view filename);
void stopChannel(int channel);
void pauseSounds();
void unpauseSounds();
int getSoundVolume() const { return std::round(static_cast<double>(soundVolume_) / MIX_MAX_VOLUME * 10); }
void setSoundVolume(int vol);
// name is the name of the file, not containing the extension
// ms is the time in milliseconds to fade in
void playMusic(std::string_view name, int ms = 0);
bool isPlayingMusic() const { return !playingTrack_.empty(); }
const std::string& getPlayingTrack() const { return playingTrack_; }
void fadeoutMusic(int ms);
void muteMusic();
void unmuteMusic();
bool isMusicMuted() const { return musicMuted_; }
int getMusicVolume() const { return std::round(static_cast<double>(musicVolume_) / MIX_MAX_VOLUME * 10); }
void setMusicVolume(int vol);
void pauseMusic();
void unpauseMusic();
private:
Mix_Chunk* getChunkByFilename(std::string filename);
Mix_Music* getMusicByName(std::string_view name);
mix_wrapper mix_;
std::map<std::string, chunk_ptr> sounds_;
std::map<std::string, music_ptr> music_;
std::string playingTrack_;
int musicVolume_ = MIX_MAX_VOLUME;
bool musicMuted_ = false;
int soundVolume_ = MIX_MAX_VOLUME;
};
#endif /* end of include guard: MIXER_H_6DF82000 */
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