linux用c语言音乐播放器
时间: 2023-12-11 11:03:28 浏览: 179
在Linux上使用C语言编写音乐播放器可以使用ALSA库或PulseAudio库。下面是一个简单的示例程序,使用ALSA库来播放音乐文件:
```c
#include <alsa/asoundlib.h>
int main(int argc, char *argv[]) {
int err;
snd_pcm_t *handle;
snd_pcm_hw_params_t *params;
snd_pcm_uframes_t frames;
char *buffer;
int size;
int channels = 2;
int rate = 44100;
if (argc < 2) {
printf("Usage: %s <file>\n", argv[0]);
return 1;
}
FILE *file = fopen(argv[1], "rb");
if (!file) {
printf("Failed to open file: %s\n", argv[1]);
return 1;
}
/* Open PCM device for playback */
if ((err = snd_pcm_open(&handle, "default", SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
printf("Error opening PCM device: %s\n", snd_strerror(err));
return 1;
}
/* Allocate hardware parameters object */
snd_pcm_hw_params_alloca(¶ms);
/* Fill it with default values */
snd_pcm_hw_params_any(handle, params);
/* Set parameters */
if ((err = snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) {
printf("Error setting access: %s\n", snd_strerror(err));
return 1;
}
if ((err = snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE)) < 0) {
printf("Error setting format: %s\n", snd_strerror(err));
return 1;
}
if ((err = snd_pcm_hw_params_set_channels(handle, params, channels)) < 0) {
printf("Error setting channels: %s\n", snd_strerror(err));
return 1;
}
if ((err = snd_pcm_hw_params_set_rate_near(handle, params, &rate, 0)) < 0) {
printf("Error setting rate: %s\n", snd_strerror(err));
return 1;
}
/* Write parameters */
if ((err = snd_pcm_hw_params(handle, params)) < 0) {
printf("Error setting hardware parameters: %s\n", snd_strerror(err));
return 1;
}
/* Allocate buffer */
snd_pcm_hw_params_get_period_size(params, &frames, 0);
size = frames * channels * 2; /* 2 bytes/sample, 16 bit audio */
buffer = (char *) malloc(size);
/* Play loop */
while (1) {
int read = fread(buffer, 1, size, file);
if (read == 0) {
break;
} else if (read != size) {
printf("Short read: expected %d bytes, got %d\n", size, read);
return 1;
}
if ((err = snd_pcm_writei(handle, buffer, frames)) != frames) {
printf("Error playing audio: %s\n", snd_strerror(err));
return 1;
}
}
/* Close PCM handle */
snd_pcm_close(handle);
/* Free buffer */
free(buffer);
/* Close file */
fclose(file);
return 0;
}
```
该程序使用`fread`函数从输入的音乐文件中读取数据,并使用`snd_pcm_writei`函数将数据写入PCM设备进行播放。您需要将程序编译成可执行文件,然后使用以下命令来播放音乐文件:
```bash
./player <file>
```
其中`<file>`是要播放的音乐文件的路径。请注意,该程序仅支持16位PCM音频格式。如果您需要使用其他格式,请参考ALSA库的文档。
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