drivers/media/platform/sti/delta/delta-mjpeg.h

   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 */