SDL-1.2.13 SDL_mixer-1.2.8 测试程序

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工程结构：
/SDLTestWav
---- /build
---- /music
---- m2.wav

---- CMakeLists.txt

---- SdlPlayTest.c

SdlPlayTest.c 清单：

/*        Sound_Init();        Sound_Play("123.wav");*/#include <stdlib.h>#include <stdio.h>#include <string.h>#include <signal.h>#ifdef unix#include <unistd.h>#endif#include "SDL.h"#include "SDL_mixer.h"static int audio_open = 0;static Mix_Music *music = NULL;static int next_track = 0;static int initresult = -1;void CleanUp(int exitcode){if( Mix_PlayingMusic() ) {Mix_FadeOutMusic(1500);SDL_Delay(1500);}if ( music ) {Mix_FreeMusic(music);music = NULL;}if ( audio_open ) {Mix_CloseAudio();audio_open = 0;}SDL_Quit();exit(exitcode);}void IntHandler(int sig){switch (sig) {        case SIGINT:next_track++;break;}}int Sound_Init(){        const int    TMP_FREQ = MIX_DEFAULT_FREQUENCY;        const Uint16 TMP_FORMAT = MIX_DEFAULT_FORMAT;        const int    TMP_CHAN = 1;        const int    TMP_CHUNK_SIZE = 4096;        return Mix_OpenAudio(TMP_FREQ,TMP_FORMAT,TMP_CHAN,TMP_CHUNK_SIZE);}int Sound_Play(const char *file_name){        printf("Enter %s filename = %s\n",__func__, file_name);        if((music = Mix_LoadMUS(file_name)) == NULL)        {                printf("call Mix_LoadMUS failed:%s\n",Mix_GetError());                return -1;        }        if(Mix_PlayMusic(music,-1) == -1)        {                printf("call Mix_PlayMusic failed\n");                return -1;        }next_track = 0;/* Play and then exit */printf("Playing %s\n", file_name);Mix_FadeInMusic(music,0,2000);

while ( !next_track && (Mix_PlayingMusic() || Mix_PausedMusic()) ) {SDL_Delay(100);}Mix_FreeMusic(music);music = NULL;

/* If the user presses Ctrl-C more than once, exit. */SDL_Delay(500);CleanUp(0);<span style="white-space:pre"></span>printf("after call Mix_PlayMusic\n");        return 0;}int main(int argc, char *argv[]){/* Initialize the SDL library */if ( SDL_Init(SDL_INIT_AUDIO) < 0 ) {printf("Couldn't initialize SDL: %s\n",SDL_GetError());return(255);}signal(SIGINT, IntHandler);signal(SIGTERM, CleanUp);initresult = Sound_Init();printf("call Sound_Init initresult = %d\n",initresult);audio_open = 1;Sound_Play("./music/m2.wav");return 0;}

CMakeLists.txt 清单：

cmake_minimum_required(VERSION 2.6)# Set the project name.project(sdlplaytest)# Search for C header files in these directories.include_directories(/usr/local/include/SDL)link_directories(/usr/local/lib)set(APP_SRC ./SdlPlayTest.c)ADD_EXECUTABLE(sdlplaytest ${APP_SRC})TARGET_LINK_LIBRARIES( sdlplaytest SDL SDL_mixer)### CMakeLists.txt ends here

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