sdl主要用圖形界面顯示及播放聲音，本人剛剛接觸sdl，寫了個簡單的入門程序，實現(xiàn)播放聲音文件，現(xiàn)分享一下當(dāng)做個筆記。

// sound2.cpp : 定義控制臺應(yīng)用程序的入口點。 //#include "stdafx.h" extern "C" {//SDL#include "sdl/SDL.h"#include "sdl/SDL_thread.h"#pragma comment(lib, "lib\\SDL2main.lib")#pragma comment(lib, "lib\\SDL2.lib") }; #include <iostream> using namespace std;#define SOUND_DATA_LEN 409600//samples*channel*2byte=4096的倍數(shù)//音頻數(shù)據(jù)結(jié)構(gòu) typedef struct SoundData {Uint8 buffer[SOUND_DATA_LEN];//數(shù)據(jù)緩存Uint8 *position;//緩存當(dāng)前播放指針Uint32 length;//待播放的緩存長度 }SoundData;//SDL 2.0 //播放回調(diào) void fill_audio(void *udata, Uint8 *stream, int len) { SoundData* sd = (SoundData*)udata;SDL_memset(stream, 0, len);//緩存數(shù)據(jù)已播放完畢if(sd->length <= 0){return;}//緩存中能播放最大的長度len = len > sd->length ?sd->length : len;//將數(shù)據(jù)混合至聲卡設(shè)備SDL_MixAudio(stream, sd->position, len, SDL_MIX_MAXVOLUME);sd->position += len;//當(dāng)前播放位置更新sd->length -= len;//緩存剩余長度更新 }int _tmain(int argc, _TCHAR* argv[]) {char *file_name = "Sweety - 櫻花草.wav";//只支持.wav文件//聲音緩存結(jié)構(gòu)SoundData sd;//步驟（1）設(shè)置音頻信息//SDL 2.0 Support for multiple windowsSDL_AudioSpec wanted_spec;wanted_spec.freq = 44100;//44.1KHz采樣率wanted_spec.format = AUDIO_S16SYS;//采樣數(shù)據(jù)格式wanted_spec.channels = 2;//2聲道wanted_spec.silence = 0;//靜音時大小wanted_spec.samples = 1024;//每次播放長度1024*2channels*2bytewanted_spec.callback = fill_audio;//設(shè)置播放回調(diào)函數(shù)wanted_spec.userdata = &sd;//傳遞數(shù)據(jù)給回調(diào)函數(shù)//步驟（2）打開音頻設(shè)備if (SDL_OpenAudio(&wanted_spec, NULL)<0){ printf("can't open audio.\n"); goto end; }FILE* file = fopen(file_name, "rb");if(!file){cout<<"無法打開聲音文件:"<<file_name<<endl;goto end;}int count = 0;//文件幀數(shù)int len = 0;//能讀文件數(shù)據(jù)長度//步驟（3）開始播放SDL_PauseAudio(0);//循環(huán)讀文件數(shù)據(jù)至緩存while(len = fread(sd.buffer, 1, SOUND_DATA_LEN, file)){sd.length = len;//Audio buffer lengthsd.position = sd.buffer;//存存數(shù)據(jù)未播放完等待while(sd.length>0){SDL_Delay(1);}printf("文件幀：%03d\n", count++);}end:fclose(file);//步驟（4）退出SDL_Quit();system("pause");return 0; }

總結(jié)

以上是生活随笔為你收集整理的SDL2.0超简单入门 100行代码实现播放wav声音文件的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。