venc_compact_jpeg_tables

Product	Supported
Atlas 350 Accelerator Card	√
Atlas A3 training product/Atlas A3 inference product	√
Atlas A2 training product/Atlas A2 inference product	√
Atlas training product	x
Atlas inference product	√
Atlas 200I/500 A2 inference product	√

Sets whether to compress Huffman and QT tables.

C Prototype

hi_s32 hi_mpi_venc_compact_jpeg_tables(hi_venc_chn chn, hi_u32 table_type, hi_bool enable)

Python Function

ret = acl.himpi.venc_compact_jpeg_tables(chn, table_type, enable)

Parameter	Description
chn	Int, encoding channel ID.
table_type	int, compression type. It can only be set to 0, indicating that both the Huffman table data and QT quantization table data are compressed.
enable	Int, whether to compress a file. Value 0 indicates no, and value 1 indicates yes.

Return Value	Description
ret	Int, error code. 0 indicates success. Other values indicate failure. For details, see VENC/JPEGE Return Codes.

This API must be called after an encoding channel is created and before the channel is destroyed.

After this API is called, compression is supported only if the Huffman/QT table has the same Y, Cb, and Cr components.

Parent topic: VENC/JPEGE APIs