Nikhil M Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 1 | // 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 Jain | 9eeb1a2 | 2023-04-20 17:41:12 +0530 | [diff] [blame] | 34 | * didn't contain a valid BMP signature or decompression is not enabled in |
| 35 | * Kconfig. |
Nikhil M Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 36 | */ |
Nikhil M Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 37 | struct 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 Jain | 9eeb1a2 | 2023-04-20 17:41:12 +0530 | [diff] [blame] | 44 | if (!CONFIG_IS_ENABLED(VIDEO_BMP_GZIP)) |
| 45 | return NULL; |
| 46 | |
Nikhil M Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 47 | /* |
| 48 | * Decompress bmp image |
| 49 | */ |
Nikhil M Jain | eb9217d | 2023-04-20 17:41:09 +0530 | [diff] [blame] | 50 | len = CONFIG_VAL(VIDEO_LOGO_MAX_SIZE); |
Nikhil M Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 51 | /* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */ |
Nikhil M Jain | eb9217d | 2023-04-20 17:41:09 +0530 | [diff] [blame] | 52 | dst = malloc(CONFIG_VAL(VIDEO_LOGO_MAX_SIZE) + 3); |
Nikhil M Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 53 | 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 Jain | eb9217d | 2023-04-20 17:41:09 +0530 | [diff] [blame] | 61 | if (gunzip(bmp, CONFIG_VAL(VIDEO_LOGO_MAX_SIZE), map_sysmem(addr, 0), |
Nikhil M Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 62 | &len)) { |
| 63 | free(dst); |
| 64 | return NULL; |
| 65 | } |
Nikhil M Jain | eb9217d | 2023-04-20 17:41:09 +0530 | [diff] [blame] | 66 | if (len == CONFIG_VAL(VIDEO_LOGO_MAX_SIZE)) |
Nikhil M Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 67 | 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 Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 83 | |
Nikhil M Jain | 58182b2 | 2023-04-20 17:41:06 +0530 | [diff] [blame] | 84 | int 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 | |
| 110 | int 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 | } |