drivers/staging/vc04_services/vchiq-mmal/mmal-msg-format.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Broadcom BM2835 V4L2 driver
   4  *
   5  * Copyright © 2013 Raspberry Pi (Trading) Ltd.
   6  *
   7  * Authors: Vincent Sanders @ Collabora
   8  *          Dave Stevenson @ Broadcom
   9  *              (now dave.stevenson@raspberrypi.org)
  10  *          Simon Mellor @ Broadcom
  11  *          Luke Diamand @ Broadcom
  12  */
  13
  14 #ifndef MMAL_MSG_FORMAT_H
  15 #define MMAL_MSG_FORMAT_H
  16
  17 #include "mmal-msg-common.h"
  18
  19 /* MMAL_ES_FORMAT_T */
  20
  21 struct mmal_audio_format {
  22         u32 channels;           /* Number of audio channels */
  23         u32 sample_rate;        /* Sample rate */
  24
  25         u32 bits_per_sample;    /* Bits per sample */
  26         u32 block_align;        /* Size of a block of data */
  27 };
  28
  29 struct mmal_video_format {
  30         u32 width;              /* Width of frame in pixels */
  31         u32 height;             /* Height of frame in rows of pixels */
  32         struct mmal_rect crop;  /* Visible region of the frame */
  33         struct mmal_rational frame_rate;        /* Frame rate */
  34         struct mmal_rational par;               /* Pixel aspect ratio */
  35
  36         /*
  37          * FourCC specifying the color space of the video stream. See the
  38          * MmalColorSpace "pre-defined color spaces" for some examples.
  39          */
  40         u32 color_space;
  41 };
  42
  43 struct mmal_subpicture_format {
  44         u32 x_offset;
  45         u32 y_offset;
  46 };
  47
  48 union mmal_es_specific_format {
  49         struct mmal_audio_format audio;
  50         struct mmal_video_format video;
  51         struct mmal_subpicture_format subpicture;
  52 };
  53
  54 /* Definition of an elementary stream format (MMAL_ES_FORMAT_T) */
  55 struct mmal_es_format_local {
  56         u32 type;       /* enum mmal_es_type */
  57
  58         u32 encoding;   /* FourCC specifying encoding of the elementary
  59                          * stream.
  60                          */
  61         u32 encoding_variant;   /* FourCC specifying the specific
  62                                  * encoding variant of the elementary
  63                                  * stream.
  64                                  */
  65
  66         union mmal_es_specific_format *es;      /* Type specific
  67                                                  * information for the
  68                                                  * elementary stream
  69                                                  */
  70
  71         u32 bitrate;    /* Bitrate in bits per second */
  72         u32 flags;      /* Flags describing properties of the elementary
  73                          * stream.
  74                          */
  75
  76         u32 extradata_size;     /* Size of the codec specific data */
  77         u8  *extradata;         /* Codec specific data */
  78 };
  79
  80 /* Remote definition of an elementary stream format (MMAL_ES_FORMAT_T) */
  81 struct mmal_es_format {
  82         u32 type;       /* enum mmal_es_type */
  83
  84         u32 encoding;   /* FourCC specifying encoding of the elementary
  85                          * stream.
  86                          */
  87         u32 encoding_variant;   /* FourCC specifying the specific
  88                                  * encoding variant of the elementary
  89                                  * stream.
  90                                  */
  91
  92         u32 es; /* Type specific
  93                  * information for the
  94                  * elementary stream
  95                  */
  96
  97         u32 bitrate;    /* Bitrate in bits per second */
  98         u32 flags;      /* Flags describing properties of the elementary
  99                          * stream.
 100                          */
 101
 102         u32 extradata_size;     /* Size of the codec specific data */
 103         u32 extradata;          /* Codec specific data */
 104 };
 105
 106 #endif /* MMAL_MSG_FORMAT_H */