1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Broadcom BCM2835 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 */ 107