tv_divide(fcount, &total_time, &af->chunk_tv);
rewind(mp3.file);
PARA_DEBUG_LOG("chunk_time: %lums\n", tv2ms(&af->chunk_tv));
tv_divide(fcount, &total_time, &af->chunk_tv);
rewind(mp3.file);
PARA_DEBUG_LOG("chunk_time: %lums\n", tv2ms(&af->chunk_tv));