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https://github.com/AsahiLinux/u-boot
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9eeb1a299d
Avoid using preprocessor compilation directives and instead use simple logical expressions for better readability since compiler will anyway optimize out the respective code block if condition is not satisfied. Signed-off-by: Nikhil M Jain <n-jain1@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
149 lines
3.3 KiB
C
149 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2002
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* Detlev Zundel, DENX Software Engineering, dzu@denx.de.
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*/
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/*
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* BMP handling routines
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*/
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#include <common.h>
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#include <bmp_layout.h>
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#include <command.h>
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#include <dm.h>
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#include <gzip.h>
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#include <log.h>
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#include <malloc.h>
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#include <mapmem.h>
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#include <splash.h>
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#include <video.h>
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#include <asm/byteorder.h>
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/*
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* Allocate and decompress a BMP image using gunzip().
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*
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* Returns a pointer to the decompressed image data. This pointer is
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* aligned to 32-bit-aligned-address + 2.
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* See doc/README.displaying-bmps for explanation.
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*
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* The allocation address is passed to 'alloc_addr' and must be freed
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* by the caller after use.
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*
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* Returns NULL if decompression failed, or if the decompressed data
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* didn't contain a valid BMP signature or decompression is not enabled in
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* Kconfig.
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*/
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struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
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void **alloc_addr)
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{
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void *dst;
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unsigned long len;
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struct bmp_image *bmp;
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if (!CONFIG_IS_ENABLED(VIDEO_BMP_GZIP))
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return NULL;
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/*
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* Decompress bmp image
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*/
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len = CONFIG_VAL(VIDEO_LOGO_MAX_SIZE);
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/* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */
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dst = malloc(CONFIG_VAL(VIDEO_LOGO_MAX_SIZE) + 3);
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if (!dst) {
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puts("Error: malloc in gunzip failed!\n");
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return NULL;
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}
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/* align to 32-bit-aligned-address + 2 */
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bmp = dst + 2;
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if (gunzip(bmp, CONFIG_VAL(VIDEO_LOGO_MAX_SIZE), map_sysmem(addr, 0),
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&len)) {
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free(dst);
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return NULL;
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}
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if (len == CONFIG_VAL(VIDEO_LOGO_MAX_SIZE))
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puts("Image could be truncated (increase CONFIG_VIDEO_LOGO_MAX_SIZE)!\n");
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/*
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* Check for bmp mark 'BM'
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*/
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if (!((bmp->header.signature[0] == 'B') &&
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(bmp->header.signature[1] == 'M'))) {
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free(dst);
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return NULL;
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}
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debug("Gzipped BMP image detected!\n");
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*alloc_addr = dst;
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return bmp;
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}
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#ifdef CONFIG_NEEDS_MANUAL_RELOC
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void bmp_reloc(void)
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{
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fixup_cmdtable(cmd_bmp_sub, ARRAY_SIZE(cmd_bmp_sub));
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}
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#endif
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int bmp_info(ulong addr)
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{
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struct bmp_image *bmp = (struct bmp_image *)map_sysmem(addr, 0);
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void *bmp_alloc_addr = NULL;
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unsigned long len;
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if (!((bmp->header.signature[0] == 'B') &&
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(bmp->header.signature[1] == 'M')))
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bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
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if (!bmp) {
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printf("There is no valid bmp file at the given address\n");
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return 1;
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}
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printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
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le32_to_cpu(bmp->header.height));
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printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
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printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
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if (bmp_alloc_addr)
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free(bmp_alloc_addr);
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return 0;
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}
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int bmp_display(ulong addr, int x, int y)
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{
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struct udevice *dev;
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int ret;
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struct bmp_image *bmp = map_sysmem(addr, 0);
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void *bmp_alloc_addr = NULL;
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unsigned long len;
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if (!((bmp->header.signature[0] == 'B') &&
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(bmp->header.signature[1] == 'M')))
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bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
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if (!bmp) {
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printf("There is no valid bmp file at the given address\n");
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return 1;
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}
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addr = map_to_sysmem(bmp);
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ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
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if (!ret) {
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bool align = false;
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if (x == BMP_ALIGN_CENTER || y == BMP_ALIGN_CENTER)
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align = true;
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ret = video_bmp_display(dev, addr, x, y, align);
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}
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if (bmp_alloc_addr)
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free(bmp_alloc_addr);
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return ret ? CMD_RET_FAILURE : 0;
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}
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