我正在用 C 语言编写一个用于播放wav文件的函数。我可以播放一次声音，但我想添加一个循环选项。
我有两种工作模式：
- 从文件名播放
- 从记忆中播放。
在这两种模式下，我无法播放声音超过两次，之后功能崩溃。
注意：我解决了将其添加到代码中：
BOOL WINAPI PlaySound(LPCSTR,HMODULE,DWORD);
没有它，我会遇到问题。
我的代码：
#include <windows.h>
#include <stdio.h>
void play(char * fileName, int repeat);
char* file2vector(char* fileName, long int* size);
int main(int argc, char ** argv)
{
if (argc > 1) {
play(argv[1], 5);
}
}
void play(char * fileName, int repeat)
{
#define SND_SYNC 0
#define SND_ASYNC 1
#define SND_FILENAME 0x20000
#define SND_NODEFAULT 2
#define SND_MEMORY 4
#define SND_NOSTOP 16
int mode = SND_SYNC | SND_NODEFAULT | SND_NOSTOP;
char * sound;
int play = 1;
int i;
long int size;
unsigned char* wavFile = file2vector(fileName, &size);
if (wavFile == NULL) {
mode |= SND_FILENAME;
sound = fileName;
printf("filename\n");
}
else {
mode |= SND_MEMORY;
sound = wavFile;
printf("memory\n");
}
if (repeat) {
play += repeat;
}
printf("play %d times\n", play);
int res;
for (i = 1; i <= play; ++i) {
printf("played %i\n", i);
res = PlaySound(sound, NULL, mode);
printf("res:%d\n", res);
}
PlaySound(NULL, 0, 0);
free(wavFile);
printf("ready");
}
char* file2vector(char* fileName, long int* size)
{
char* vector = NULL;
FILE* file = fopen(fileName, "rb");
if (NULL == file) {
*size = 0L;
}
else
{
fseek(file, 0L, SEEK_END);
*size = ftell(file);
fseek(file, 0L, SEEK_SET);
/* ftell can return -1 on failure */
if (*size <= 0) {
*size = 0L;
}
else
{
vector = (char*)malloc(*size);
if (NULL != vector) {
fread(vector, sizeof(char), *size, file);
}
}
fclose(file);
}
return vector;
}
当我运行此代码时，例如：
pplay.exe c:\windows\media\chimes.wav
它打印：
memory
play 6 times
played 1
res:1
played 2
res:1
played 4198705