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