A critical idiosyncrasy of the BMP format is that it stores pixel data . The first row of pixel data in the file corresponds to the bottom row of the displayed image. Most proprietary formats (including JC5) store data top-down . A converter must reverse the row order during processing.
[JC5_MAGIC] 4 bytes (e.g., 0x35434A = "5CJ" in little-endian) [VERSION] 2 bytes [HEADER_SIZE] 2 bytes [WIDTH] 2 bytes [HEIGHT] 2 bytes [BPP] 1 byte [PALETTE] variable (0 or 32 bytes for 16 colors) [METADATA_BLOCK] variable [COMPRESSED_DATA] variable [END_MARKER] 2 bytes (0xFFFF) bmp to jc5 converter work
: A high-end system for complex jacquard patterns that supports exports for Stäubli JC4 through JC7 controllers. A critical idiosyncrasy of the BMP format is
Some console file systems require the final file size to be aligned to specific boundaries (e.g., 2048 bytes). The converter may need to append null bytes at the end of the file to meet alignment requirements. A converter must reverse the row order during processing
: Map the colors in your BMP to specific weave structures (e.g., satin or twill) based on the fabric requirements. Configure Loom Parameters
def bmp_to_jc5(bmp_path, jc5_path): w, h, rgb_data = read_bmp(bmp_path) rgb_data = bgr_to_rgb(rgb_data) compressed = lz4.frame.compress(rgb_data) header = write_jc5_header(w, h, comp_type=2) with open(jc5_path, 'wb') as f: f.write(header) f.write(compressed)