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03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
142 lines
3.2 KiB
C
142 lines
3.2 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 <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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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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