mgdl-pc-sound.h

#pragma once
#include <sndfile.h>
 
#include <mgdl/mgdl-types.h>
#include <mgdl/mgdl-sound.h>
#include <mgdl/mgdl-openal.h>
 
 
// Work in progress
 
#include <mgdl/mgdl-music.h>
#include <vorbis/vorbisfile.h>
#include <cstring>
#include <istream>
#include <fstream>
#include <iostream>
 
    // For ogg playback
    const std::size_t NUM_BUFFERS = 2;
    const ALsizei READ_SIZE = 4096;
    const ALsizei BUFFER_SIZE = READ_SIZE * 4;
 
    struct StreamingAudioData
    {
        // These buffers are fed to AL in ring sequence
        ALuint buffers[NUM_BUFFERS];
 
        // File name is kept in case need to open it again
        std::string filename;
        std::ifstream file;
        FILE* filePointer;
 
        // Information about the audio
        std::uint8_t channels;
        std::int32_t sampleRate;
        std::uint8_t bitsPerSample;
 
        // Size in bytes
        ALsizei size;
 
        // OpenAL book keeping information
        ALuint source;
        ALsizei sizeConsumed = 0;
        ALenum format;
 
        // Identifier for the ogg vorbis library
        OggVorbis_File oggVorbisFile;
        // What part is being played
        int oggCurrentSection = 0;
 
        // Duration (What unit?)
        std::size_t duration;
    };
 
    bool LoadFileStreaming(const char* filename);
    bool LoadFileNonStreaming(const char* filename, Music* music);
    void CopyToAL();
    void Rebuffer();
    bool LoadAudioDataStreaming(const char* filename);
    bool LoadAudioDataFilePtr(const char* filename);
    bool OpenOggCallbacks();
    bool OpenOggNoCallbacks();
    bool ReadOggProperties();
    void SetALSourceToOrigo(Music* music);
    bool VerifyALSource();
    std::int32_t ReadOggToPCMBuffer(char* buffer, std::int32_t bufferSize);