使用libsox将音频转换为FLAC

#include <sox.h>

int main() {
    sox_format_t *in, *out;
    sox_effects_chain_t *chain;
    sox_effect_t *effect;
    char *input_file = "input.wav";
    char *output_file = "output.flac";

    // 初始化libsox
    sox_init();

    // 打开输入文件
    in = sox_open_read(input_file, NULL, NULL, NULL);
    // 创建输出文件
    out = sox_open_write(output_file, &in->signal, NULL, NULL, NULL, NULL);

    // 创建效果链
    chain = sox_create_effects_chain(&in->encoding, &out->encoding);

    // 添加转换效果
    effect = sox_create_effect(sox_find_effect("input"));
    char *args[] = {"-t", "flac", NULL};
    sox_effect_options(effect, 2, args);
    sox_add_effect(chain, effect, &in->signal, &in->signal);

    // 运行效果链
    sox_flow_effects(chain, NULL, NULL);

    // 销毁效果链
    sox_delete_effects_chain(chain);

    // 关闭输入输出文件
    sox_close(out);
    sox_close(in);

    // 清理libsox资源
    sox_quit();

    return 0;
}