53     int sample_size;        /* size of one sample (or packet)  member
139     if (ast->sample_size)  in get_duration()
301         int max        = ast->sample_size;  in clean_index()
304         if (n != 1 || ast->sample_size == 0)  in clean_index()
697             ast->sample_size = avio_rl32(pb);  in avi_read_header()
698             ast->cum_len    *= FFMAX(1, ast->sample_size);  in avi_read_header()
700                     ast->rate, ast->scale, ast->sample_size);  in avi_read_header()
706                 ast->sample_size = 0;  in avi_read_header()
722             if (ast->sample_size < 0) {  in avi_read_header()
726                            ast->sample_size,  in avi_read_header()
733                        ast->sample_size,  in avi_read_header()
735                 ast->sample_size = 0;  in avi_read_header()
738             if (ast->sample_size == 0) {  in avi_read_header()
889                     if (ast->sample_size && st->codecpar->block_align &&  in avi_read_header()
890                         ast->sample_size != st->codecpar->block_align) {  in avi_read_header()
894                                ast->sample_size,  in avi_read_header()
896                         ast->sample_size = st->codecpar->block_align;  in avi_read_header()
931 …ecpar->codec_id == AV_CODEC_ID_AAC && ast->dshow_block_align == 1024 && ast->sample_size == 1024 ||  in avi_read_header()
932 …ecpar->codec_id == AV_CODEC_ID_AAC && ast->dshow_block_align == 4096 && ast->sample_size == 4096 ||  in avi_read_header()
933 …ecpar->codec_id == AV_CODEC_ID_MP3 && ast->dshow_block_align == 1152 && ast->sample_size == 1152) {  in avi_read_header()
935                         ast->sample_size = 0;  in avi_read_header()
1409                           (AVRational) { FFMAX(1, ast->sample_size),  in ni_prepare_read()
1488         if (ast->sample_size <= 1)  in avi_read_packet()
1490         else if (ast->sample_size < 32)  in avi_read_packet()
1492             size = 1024 * ast->sample_size;  in avi_read_packet()
1494             size = ast->sample_size;  in avi_read_packet()
1534             if (ast->sample_size)  in avi_read_packet()
1535                 pkt->dts /= ast->sample_size;  in avi_read_packet()
1715                                    FFMAX(ast->sample_size, 1),  in check_stream_max_drift()
1729                                    FFMAX(ast->sample_size, 1),  in check_stream_max_drift()
1872                                       timestamp * FFMAX(ast->sample_size, 1),  in avi_read_seek()
1877                    timestamp * FFMAX(ast->sample_size, 1),  in avi_read_seek()
1885     timestamp = sti->index_entries[index].timestamp / FFMAX(ast->sample_size, 1);  in avi_read_seek()
1928                                           FFMAX(ast2->sample_size, 1),  in avi_read_seek()
1947 …              av_rescale_q(timestamp, st->time_base, st2->time_base) * FFMAX(ast2->sample_size, 1),  in avi_read_seek()