linux 语音播放api

#include <alsa/asoundlib.h>

int main() {
    snd_pcm_t *handle;
    snd_pcm_hw_params_t *params;
    char *buffer;
    int err;

    // 打开PCM设备
    if ((err = snd_pcm_open(&handle, "default", SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
        fprintf(stderr, "Cannot open audio device (%s)\n", snd_strerror(err));
        return 1;
    }

    // 分配硬件参数对象
    snd_pcm_hw_params_alloca(&params);

    // 设置默认参数
    snd_pcm_hw_params_any(handle, params);
    snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);
    snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE);
    snd_pcm_hw_params_set_rate_near(handle, params, &rate, 0);
    snd_pcm_hw_params_set_channels(handle, params, 2);

    // 应用参数
    snd_pcm_hw_params(handle, params);

    // 分配缓冲区
    buffer = (char*)malloc(BUFFER_SIZE);

    // 播放音频数据
    while (1) {
        // 填充buffer数据
        // ...
        snd_pcm_writei(handle, buffer, BUFFER_SIZE / 4);
    }

    // 清理资源
    free(buffer);
    snd_pcm_close(handle);
    return 0;
}