diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/Kconfig | 16 | ||||
| -rw-r--r-- | drivers/video/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/bmp.c | 142 |
3 files changed, 159 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 09f2cb1a73..ab927641bb 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -959,6 +959,14 @@ config SPLASH_SOURCE endif # SPLASH_SCREEN +config BMP + bool "Enable bmp image display" + help + Enable bmp functions to display bmp image and get bmp info. + + BMP is a simple graphics-image file format designed to store bitmap + images. It is primarily used on Windows devices. + config VIDEO_BMP_GZIP bool "Gzip compressed BMP image support" depends on BMP || SPLASH_SCREEN @@ -1162,6 +1170,14 @@ config SPL_SPLASH_SOURCE endif # SPL_SPLASH_SCREEN +config SPL_BMP + bool "Enable bmp image display at SPL" + help + Enable bmp functions to display bmp image and get bmp info in SPL. + + BMP is a simple graphics-image file format designed to store bitmap + images. It is primarily used on Windows devices. + config SPL_VIDEO_BMP_GZIP bool "Gzip compressed BMP image support at SPL" depends on SPL_SPLASH_SCREEN || SPL_BMP diff --git a/drivers/video/Makefile b/drivers/video/Makefile index d13af9f3b1..fdc2937632 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_PANEL_HX8238D) += hx8238d.o obj-$(CONFIG_$(SPL_TPL_)SIMPLE_PANEL) += simple_panel.o obj-$(CONFIG_VIDEO_LOGO) += u_boot_logo.o +obj-$(CONFIG_$(SPL_TPL_)BMP) += bmp.o endif diff --git a/drivers/video/bmp.c b/drivers/video/bmp.c new file mode 100644 index 0000000000..bab6fa7265 --- /dev/null +++ b/drivers/video/bmp.c @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2002 + * Detlev Zundel, DENX Software Engineering, dzu@denx.de. + */ + +/* + * BMP handling routines + */ + +#include <common.h> +#include <bmp_layout.h> +#include <command.h> +#include <dm.h> +#include <gzip.h> +#include <log.h> +#include <malloc.h> +#include <mapmem.h> +#include <splash.h> +#include <video.h> +#include <asm/byteorder.h> + +/* + * Allocate and decompress a BMP image using gunzip(). + * + * Returns a pointer to the decompressed image data. This pointer is + * aligned to 32-bit-aligned-address + 2. + * See doc/README.displaying-bmps for explanation. + * + * The allocation address is passed to 'alloc_addr' and must be freed + * by the caller after use. + * + * Returns NULL if decompression failed, or if the decompressed data + * didn't contain a valid BMP signature or decompression is not enabled in + * Kconfig. + */ +struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp, + void **alloc_addr) +{ + void *dst; + unsigned long len; + struct bmp_image *bmp; + + if (!CONFIG_IS_ENABLED(VIDEO_BMP_GZIP)) + return NULL; + + /* + * Decompress bmp image + */ + len = CONFIG_VAL(VIDEO_LOGO_MAX_SIZE); + /* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */ + dst = malloc(CONFIG_VAL(VIDEO_LOGO_MAX_SIZE) + 3); + if (!dst) { + puts("Error: malloc in gunzip failed!\n"); + return NULL; + } + + /* align to 32-bit-aligned-address + 2 */ + bmp = dst + 2; + + if (gunzip(bmp, CONFIG_VAL(VIDEO_LOGO_MAX_SIZE), map_sysmem(addr, 0), + &len)) { + free(dst); + return NULL; + } + if (len == CONFIG_VAL(VIDEO_LOGO_MAX_SIZE)) + puts("Image could be truncated (increase CONFIG_VIDEO_LOGO_MAX_SIZE)!\n"); + + /* + * Check for bmp mark 'BM' + */ + if (!((bmp->header.signature[0] == 'B') && + (bmp->header.signature[1] == 'M'))) { + free(dst); + return NULL; + } + + debug("Gzipped BMP image detected!\n"); + + *alloc_addr = dst; + return bmp; +} + +int bmp_info(ulong addr) +{ + struct bmp_image *bmp = (struct bmp_image *)map_sysmem(addr, 0); + void *bmp_alloc_addr = NULL; + unsigned long len; + + if (!((bmp->header.signature[0] == 'B') && + (bmp->header.signature[1] == 'M'))) + bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr); + + if (!bmp) { + printf("There is no valid bmp file at the given address\n"); + return 1; + } + + printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width), + le32_to_cpu(bmp->header.height)); + printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count)); + printf("Compression : %d\n", le32_to_cpu(bmp->header.compression)); + + if (bmp_alloc_addr) + free(bmp_alloc_addr); + + return 0; +} + +int bmp_display(ulong addr, int x, int y) +{ + struct udevice *dev; + int ret; + struct bmp_image *bmp = map_sysmem(addr, 0); + void *bmp_alloc_addr = NULL; + unsigned long len; + + if (!((bmp->header.signature[0] == 'B') && + (bmp->header.signature[1] == 'M'))) + bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr); + + if (!bmp) { + printf("There is no valid bmp file at the given address\n"); + return 1; + } + addr = map_to_sysmem(bmp); + + ret = uclass_first_device_err(UCLASS_VIDEO, &dev); + if (!ret) { + bool align = false; + + if (x == BMP_ALIGN_CENTER || y == BMP_ALIGN_CENTER) + align = true; + + ret = video_bmp_display(dev, addr, x, y, align); + } + + if (bmp_alloc_addr) + free(bmp_alloc_addr); + + return ret ? CMD_RET_FAILURE : 0; +} |