掌機 - Miyoo A30 - C/C++ - SDL v2.0 - Music Effect from Memory

main.c

#include <stdio.h>
#include <stdlib.h>
#include <SDL.h>
#include <SDL_mixer.h>
 
#include "hex_wav.h"
#include "hex_effect.h"
 
int main(int argc, char **argv)
{
    const int w = 320;
    const int h = 240;
    const int bpp = 16;
    SDL_Window *window = NULL;
    SDL_Renderer *renderer = NULL;
 
    SDL_Init(SDL_INIT_VIDEO);
    window = SDL_CreateWindow("main", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, w, h, SDL_WINDOW_SHOWN);
    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    SDL_RenderClear(renderer);
    SDL_RenderPresent(renderer);
 
    SDL_RWops *rw = NULL;
    Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 4096);
    rw = SDL_RWFromMem(hex_wav, sizeof(hex_wav));
    Mix_Music *music = Mix_LoadMUS_RW(rw, 1);
    rw = SDL_RWFromMem(hex_effect, sizeof(hex_effect));
    Mix_Chunk *effect = Mix_LoadWAV_RW(rw, 1);
    Mix_PlayMusic(music, 1);
    Mix_PlayChannel(-1, effect, 0);
 
    SDL_Delay(3000);
 
    Mix_HaltMusic();
    Mix_FreeChunk(effect);
    Mix_FreeMusic(music);
    Mix_CloseAudio();
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
}

編譯、執行

$ bin2header main.wav hex_music > hex_music.h
$ bin2header effect.wav hex_effect > hex_effect.h
$ /opt/a30/bin/arm-linux-gcc \
    -I/opt/a30/arm-a30-linux-gnueabihf/sysroot/usr/include/SDL2 \
    -lSDL2 -lSDL2_gfx -lSDL2_image -lSDL2_ttf -lSDL2_mixer \
    -lGLESv2 main.c -o main

/mnt/SDCARD# export LD_LIBRARY_PATH=.:/config/lib:/customer/lib:/usr/miyoo/lib
/mnt/SDCARD# ./main