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 * MMAL structures
14 *
15 */
16 #ifndef MMAL_COMMON_H
17 #define MMAL_COMMON_H
18
19 #define MMAL_FOURCC(a, b, c, d) ((a) | (b << 8) | (c << 16) | (d << 24))
20 #define MMAL_MAGIC MMAL_FOURCC('m', 'm', 'a', 'l')
21
22 /** Special value signalling that time is not known */
23 #define MMAL_TIME_UNKNOWN BIT_ULL(63)
24
25 struct mmal_msg_context;
26
27 /* mapping between v4l and mmal video modes */
28 struct mmal_fmt {
29 u32 fourcc; /* v4l2 format id */
30 int flags; /* v4l2 flags field */
31 u32 mmal;
32 int depth;
33 u32 mmal_component; /* MMAL component index to be used to encode */
34 u32 ybbp; /* depth of first Y plane for planar formats */
35 bool remove_padding; /* Does the GPU have to remove padding,
36 * or can we do hide padding via bytesperline.
37 */
38 };
39
40 /* buffer for one video frame */
41 struct mmal_buffer {
42 /* v4l buffer data -- must be first */
43 struct vb2_v4l2_buffer vb;
44
45 /* list of buffers available */
46 struct list_head list;
47
48 void *buffer; /* buffer pointer */
49 unsigned long buffer_size; /* size of allocated buffer */
50
51 struct mmal_msg_context *msg_context;
52 };
53
54 /* */
55 struct mmal_colourfx {
56 s32 enable;
57 u32 u;
58 u32 v;
59 };
60 #endif