APM_VS12_CHUNK_SIZE   94 libavformat/apm.c     uint8_t buf[APM_VS12_CHUNK_SIZE];
APM_VS12_CHUNK_SIZE  126 libavformat/apm.c     if ((ret = avio_read(s->pb, buf, APM_VS12_CHUNK_SIZE)) < 0)
APM_VS12_CHUNK_SIZE  128 libavformat/apm.c     else if (ret != APM_VS12_CHUNK_SIZE)