blob: bab6fa7265af3ef5bf833336905bd2c7f3353568 [file] [log] [blame]
Nikhil M Jain58182b22023-04-20 17:41:06 +05301// SPDX-License-Identifier: GPL-2.0+
2/*
3 * (C) Copyright 2002
4 * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
5 */
6
7/*
8 * BMP handling routines
9 */
10
11#include <common.h>
12#include <bmp_layout.h>
13#include <command.h>
14#include <dm.h>
15#include <gzip.h>
16#include <log.h>
17#include <malloc.h>
18#include <mapmem.h>
19#include <splash.h>
20#include <video.h>
21#include <asm/byteorder.h>
22
23/*
24 * Allocate and decompress a BMP image using gunzip().
25 *
26 * Returns a pointer to the decompressed image data. This pointer is
27 * aligned to 32-bit-aligned-address + 2.
28 * See doc/README.displaying-bmps for explanation.
29 *
30 * The allocation address is passed to 'alloc_addr' and must be freed
31 * by the caller after use.
32 *
33 * Returns NULL if decompression failed, or if the decompressed data
Nikhil M Jain9eeb1a22023-04-20 17:41:12 +053034 * didn't contain a valid BMP signature or decompression is not enabled in
35 * Kconfig.
Nikhil M Jain58182b22023-04-20 17:41:06 +053036 */
Nikhil M Jain58182b22023-04-20 17:41:06 +053037struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
38 void **alloc_addr)
39{
40 void *dst;
41 unsigned long len;
42 struct bmp_image *bmp;
43
Nikhil M Jain9eeb1a22023-04-20 17:41:12 +053044 if (!CONFIG_IS_ENABLED(VIDEO_BMP_GZIP))
45 return NULL;
46
Nikhil M Jain58182b22023-04-20 17:41:06 +053047 /*
48 * Decompress bmp image
49 */
Nikhil M Jaineb9217d2023-04-20 17:41:09 +053050 len = CONFIG_VAL(VIDEO_LOGO_MAX_SIZE);
Nikhil M Jain58182b22023-04-20 17:41:06 +053051 /* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */
Nikhil M Jaineb9217d2023-04-20 17:41:09 +053052 dst = malloc(CONFIG_VAL(VIDEO_LOGO_MAX_SIZE) + 3);
Nikhil M Jain58182b22023-04-20 17:41:06 +053053 if (!dst) {
54 puts("Error: malloc in gunzip failed!\n");
55 return NULL;
56 }
57
58 /* align to 32-bit-aligned-address + 2 */
59 bmp = dst + 2;
60
Nikhil M Jaineb9217d2023-04-20 17:41:09 +053061 if (gunzip(bmp, CONFIG_VAL(VIDEO_LOGO_MAX_SIZE), map_sysmem(addr, 0),
Nikhil M Jain58182b22023-04-20 17:41:06 +053062 &len)) {
63 free(dst);
64 return NULL;
65 }
Nikhil M Jaineb9217d2023-04-20 17:41:09 +053066 if (len == CONFIG_VAL(VIDEO_LOGO_MAX_SIZE))
Nikhil M Jain58182b22023-04-20 17:41:06 +053067 puts("Image could be truncated (increase CONFIG_VIDEO_LOGO_MAX_SIZE)!\n");
68
69 /*
70 * Check for bmp mark 'BM'
71 */
72 if (!((bmp->header.signature[0] == 'B') &&
73 (bmp->header.signature[1] == 'M'))) {
74 free(dst);
75 return NULL;
76 }
77
78 debug("Gzipped BMP image detected!\n");
79
80 *alloc_addr = dst;
81 return bmp;
82}
Nikhil M Jain58182b22023-04-20 17:41:06 +053083
Nikhil M Jain58182b22023-04-20 17:41:06 +053084int bmp_info(ulong addr)
85{
86 struct bmp_image *bmp = (struct bmp_image *)map_sysmem(addr, 0);
87 void *bmp_alloc_addr = NULL;
88 unsigned long len;
89
90 if (!((bmp->header.signature[0] == 'B') &&
91 (bmp->header.signature[1] == 'M')))
92 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
93
94 if (!bmp) {
95 printf("There is no valid bmp file at the given address\n");
96 return 1;
97 }
98
99 printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
100 le32_to_cpu(bmp->header.height));
101 printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
102 printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
103
104 if (bmp_alloc_addr)
105 free(bmp_alloc_addr);
106
107 return 0;
108}
109
110int bmp_display(ulong addr, int x, int y)
111{
112 struct udevice *dev;
113 int ret;
114 struct bmp_image *bmp = map_sysmem(addr, 0);
115 void *bmp_alloc_addr = NULL;
116 unsigned long len;
117
118 if (!((bmp->header.signature[0] == 'B') &&
119 (bmp->header.signature[1] == 'M')))
120 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
121
122 if (!bmp) {
123 printf("There is no valid bmp file at the given address\n");
124 return 1;
125 }
126 addr = map_to_sysmem(bmp);
127
128 ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
129 if (!ret) {
130 bool align = false;
131
132 if (x == BMP_ALIGN_CENTER || y == BMP_ALIGN_CENTER)
133 align = true;
134
135 ret = video_bmp_display(dev, addr, x, y, align);
136 }
137
138 if (bmp_alloc_addr)
139 free(bmp_alloc_addr);
140
141 return ret ? CMD_RET_FAILURE : 0;
142}