BACKSTEP_SIZE      48 libavcodec/mpegaudiodec_template.c #define LAST_BUF_SIZE 2 * BACKSTEP_SIZE + EXTRABYTES
BACKSTEP_SIZE    1593 libavcodec/mpegaudiodec_template.c             if (i >= 0 && i <= BACKSTEP_SIZE) {
BACKSTEP_SIZE    1606 libavcodec/mpegaudiodec_template.c         if (i < 0 || i > BACKSTEP_SIZE || nb_frames < 0) {
BACKSTEP_SIZE    1609 libavcodec/mpegaudiodec_template.c             i = FFMIN(BACKSTEP_SIZE, buf_size - HEADER_SIZE);