engine_audio.hpp

/*
 * MIT License
 *
 * Copyright (c) 2024 Giovanni Santini
 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
 
#pragma once
 
#include <SDL3/SDL_audio.h>
#include <string>
#include <unordered_map>
#include <vector>
 
namespace brenta
{
 
namespace types
{
 
typedef std::string stream_name_t;
 
typedef std::string audio_name_t;
 
struct audio_file_t
{
    std::string path;
    Uint8 *audio_buf;
    Uint32 audio_len;
    SDL_AudioSpec spec;
};
 
/*
 * typedef struct SDL_AudioSpec
 * {
 *   SDL_AudioFormat format; // Audio data format
 *   int channels;           // Number of channels: 1 mono, 2 stereo, etc
 *   int freq;               // sample rate: sample frames per second
 * } SDL_AudioSpec;
 *
 */
 
} // namespace types
 
class audio
{
  public:
    static std::unordered_map<types::audio_name_t, types::audio_file_t>
        audio_files;
    static std::unordered_map<types::stream_name_t, SDL_AudioStream *> streams;
 
    audio() = delete;
    static void init();
    static void destroy();
 
    static types::audio_file_t get_audio_file(types::audio_name_t name);
    static SDL_AudioStream *get_stream(types::stream_name_t name);
 
    static void load_audio(types::audio_name_t name, std::string path);
    static void create_stream(types::stream_name_t);
    static void play_audio(types::audio_name_t,
                           types::stream_name_t = "default");
    static void set_volume(types::stream_name_t name, int volume);
    static void pause_stream(types::stream_name_t name);
    static void resume_stream(types::stream_name_t name);
    static void clear_stream(types::stream_name_t name);
 
  private:
    static void check_error_audio();
};
 
} // namespace brenta