#include <common.h>
#include <bmp_layout.h>
#include <command.h>
-
-#if (CONFIG_COMMANDS & CFG_CMD_BMP)
+#include <asm/byteorder.h>
+#include <malloc.h>
static int bmp_info (ulong addr);
static int bmp_display (ulong addr, int x, int y);
+int gunzip(void *, int, unsigned char *, unsigned long *);
+
+/*
+ * Allocate and decompress a BMP image using gunzip().
+ *
+ * Returns a pointer to the decompressed image data. 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.
+ */
+#ifdef CONFIG_VIDEO_BMP_GZIP
+static bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
+{
+ void *dst;
+ unsigned long len;
+ bmp_image_t *bmp;
+
+ /*
+ * Decompress bmp image
+ */
+ len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
+ dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE);
+ if (dst == NULL) {
+ puts("Error: malloc in gunzip failed!\n");
+ return NULL;
+ }
+ if (gunzip(dst, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
+ free(dst);
+ return NULL;
+ }
+ if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)
+ puts("Image could be truncated"
+ " (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n");
+
+ bmp = dst;
+
+ /*
+ * Check for bmp mark 'BM'
+ */
+ if (!((bmp->header.signature[0] == 'B') &&
+ (bmp->header.signature[1] == 'M'))) {
+ free(dst);
+ return NULL;
+ }
+
+ puts("Gzipped BMP image detected!\n");
+
+ return bmp;
+}
+#else
+static bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
+{
+ return NULL;
+}
+#endif
+
+
/*
* Subroutine: do_bmp
*
static int bmp_info(ulong addr)
{
bmp_image_t *bmp=(bmp_image_t *)addr;
+ unsigned long len;
+
if (!((bmp->header.signature[0]=='B') &&
- (bmp->header.signature[1]=='M'))) {
+ (bmp->header.signature[1]=='M')))
+ bmp = gunzip_bmp(addr, &len);
+
+ if (bmp == NULL) {
printf("There is no valid bmp file at the given address\n");
- return(1);
+ 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 ((unsigned long)bmp != addr)
+ free(bmp);
+
return(0);
}
*/
static int bmp_display(ulong addr, int x, int y)
{
-#ifdef CONFIG_LCD
- extern int lcd_display_bitmap (ulong, int, int);
+ int ret;
+ bmp_image_t *bmp = (bmp_image_t *)addr;
+ unsigned long len;
- return (lcd_display_bitmap (addr, x, y));
-#endif
-#ifdef CONFIG_VIDEO
+ if (!((bmp->header.signature[0]=='B') &&
+ (bmp->header.signature[1]=='M')))
+ bmp = gunzip_bmp(addr, &len);
+
+ if (!bmp) {
+ printf("There is no valid bmp file at the given address\n");
+ return 1;
+ }
+
+#if defined(CONFIG_LCD)
+ extern int lcd_display_bitmap (ulong, int, int);
+
+ ret = lcd_display_bitmap ((unsigned long)bmp, x, y);
+#elif defined(CONFIG_VIDEO)
extern int video_display_bitmap (ulong, int, int);
- return (video_display_bitmap (addr, x, y));
+
+ ret = video_display_bitmap ((unsigned long)bmp, x, y);
+#else
+# error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
#endif
-}
-#endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) */
+ if ((unsigned long)bmp != addr)
+ free(bmp);
+
+ return ret;
+}