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linux_kernel
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drivers
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media
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delta
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delta-mjpeg.h

delta-mjpeg.h 886 B
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  1. /*
    2. 

  2.  * Copyright (C) STMicroelectronics SA 2013
    3. 

  3.  * Author: Hugues Fruchet <hugues.fruchet@st.com> for STMicroelectronics.
    4. 

  4.  * License terms:  GNU General Public License (GPL), version 2
    5. 

  5.  */
    6. 

  6. 

  7. #ifndef DELTA_MJPEG_H
    8. 

  8. #define DELTA_MJPEG_H
    9. 

  9. 

  10. #include "delta.h"
    11. 

  11. 

  12. struct mjpeg_component {
    13. 

  13. 	unsigned int id;/* 1=Y, 2=Cb, 3=Cr, 4=L, 5=Q */
    14. 

  14. 	unsigned int h_sampling_factor;
    15. 

  15. 	unsigned int v_sampling_factor;
    16. 

  16. 	unsigned int quant_table_index;
    17. 

  17. };
    18. 

  18. 

  19. #define MJPEG_MAX_COMPONENTS 5
    20. 

  20. 

  21. struct mjpeg_header {
    22. 

  22. 	unsigned int length;
    23. 

  23. 	unsigned int sample_precision;
    24. 

  24. 	unsigned int frame_width;
    25. 

  25. 	unsigned int frame_height;
    26. 

  26. 	unsigned int nb_of_components;
    27. 

  27. 	struct mjpeg_component components[MJPEG_MAX_COMPONENTS];
    28. 

  28. };
    29. 

  29. 

  30. int delta_mjpeg_read_header(struct delta_ctx *pctx,
    31. 

  31. 			    unsigned char *data, unsigned int size,
    32. 

  32. 			    struct mjpeg_header *header,
    33. 

  33. 			    unsigned int *data_offset);
    34. 

  34. 

  35. #endif /* DELTA_MJPEG_H */
    36.