1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) STMicroelectronics SA 2013 4 * Author: Hugues Fruchet <hugues.fruchet@st.com> for STMicroelectronics. 5 */ 6 7 #ifndef DELTA_MJPEG_H 8 #define DELTA_MJPEG_H 9 10 #include "delta.h" 11 12 struct mjpeg_component { 13 unsigned int id;/* 1=Y, 2=Cb, 3=Cr, 4=L, 5=Q */ 14 unsigned int h_sampling_factor; 15 unsigned int v_sampling_factor; 16 unsigned int quant_table_index; 17 }; 18 19 #define MJPEG_MAX_COMPONENTS 5 20 21 struct mjpeg_header { 22 unsigned int length; 23 unsigned int sample_precision; 24 unsigned int frame_width; 25 unsigned int frame_height; 26 unsigned int nb_of_components; 27 struct mjpeg_component components[MJPEG_MAX_COMPONENTS]; 28 }; 29 30 int delta_mjpeg_read_header(struct delta_ctx *pctx, 31 unsigned char *data, unsigned int size, 32 struct mjpeg_header *header, 33 unsigned int *data_offset); 34 35 #endif /* DELTA_MJPEG_H */ 36