使用sdl播放音频流

来源：互联网发布：橡胶木与橡木区别知乎编辑：程序博客网时间：2024/05/16 15:06

获取SDL库：http://download.csdn.net/detail/u011417605/9249383

#include "SDL.h"static  Uint8  *audio_chunk;static  Uint32  audio_len;static  Uint8  *audio_pos;void  fill_audio(void *udata, Uint8 *stream, int len){//SDL 2.0  SDL_memset(stream, 0, len);if (audio_len == 0)        /*  Only  play  if  we  have  data  left  */return;len = (len > audio_len ? audio_len : len);   /*  Mix  as  much  data  as  possible  */SDL_MixAudio(stream, audio_pos, len, SDL_MIX_MAXVOLUME);audio_pos += len;audio_len -= len;}

void Init(){    if (SDL_Init(SDL_INIT_AUDIO | SDL_INIT_TIMER)) {printf("Could not initialize SDL - %s\n", SDL_GetError());return;}//SDL_AudioSpec  SDL_AudioSpec wanted_spec;wanted_spec.freq = 44100;wanted_spec.format = AUDIO_S16SYS;wanted_spec.channels = 2;wanted_spec.silence = 0;wanted_spec.samples = 1024;wanted_spec.callback = fill_audio;if (SDL_OpenAudio(&wanted_spec, NULL) < 0){printf("can't open audio.\n");return;}}

void Play(Uint8 *pStream,int len){   audio_chunk = pStream;//Audio buffer length  audio_len = len;audio_pos = audio_chunk;//Play  SDL_PauseAudio(0);while (audio_len > 0)//Wait until finish  SDL_Delay(1);}

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