Add an option to let seabios show BMP file as a logo.

Signed-off-by: Wayne Xia <xiawenc@linux.vnet.ibm.com>

1 files changed, 79 insertions, 26 deletions

diff --git a/src/bootsplash.c b/src/bootsplash.c
index cf1a603..51f4f4f 100644
--- a/src/bootsplash.c
+++ b/src/bootsplash.c
@@ -12,7 +12,7 @@
 #include "jpeg.h" // splash
 #include "biosvar.h" // SET_EBDA
 #include "paravirt.h" // romfile_find
-
+#include "bmp.h"
 
 /****************************************************************
  * VESA structures
@@ -109,7 +109,7 @@ enable_vga_console(void)
 
 static int
 find_videomode(struct vesa_info *vesa_info, struct vesa_mode_info *mode_info
-               , int width, int height)
+               , int width, int height, int bpp_req)
 {
     dprintf(3, "Finding vesa mode with dimensions %d/%d\n", width, height);
     u16 *videomodes = SEGOFF_TO_FLATPTR(vesa_info->video_mode_ptr);
@@ -135,8 +135,13 @@ find_videomode(struct vesa_info *vesa_info, struct vesa_mode_info *mode_info
             || mode_info->y_resolution != height)
             continue;
         u8 depth = mode_info->bits_per_pixel;
-        if (depth != 16 && depth != 24 && depth != 32)
-            continue;
+        if (bpp_req == 0) {
+            if (depth != 16 && depth != 24 && depth != 32)
+                continue;
+        } else {
+            if (depth != bpp_req)
+                continue;
+        }
         return videomode;
     }
 }
@@ -148,17 +153,25 @@ enable_bootsplash(void)
 {
     if (!CONFIG_BOOTSPLASH)
         return;
+    /* splash picture can be bmp or jpeg file */
     dprintf(3, "Checking for bootsplash\n");
+    u8 type = 0; /* 0 means jpg, 1 means bmp, default is 0=jpg */
     int filesize;
     u8 *filedata = romfile_loadfile("bootsplash.jpg", &filesize);
-    if (!filedata)
-        return;
+    if (!filedata) {
+        filedata = romfile_loadfile("bootsplash.bmp", &filesize);
+        if (!filedata)
+            return;
+        type = 1;
+    }
+    dprintf(3, "start showing bootsplash\n");
 
-    u8 *picture = NULL;
+    u8 *picture = NULL; /* data buff used to be flushed to the video buf */
+    struct jpeg_decdata *jpeg = NULL;
+    struct bmp_decdata *bmp = NULL;
     struct vesa_info *vesa_info = malloc_tmplow(sizeof(*vesa_info));
     struct vesa_mode_info *mode_info = malloc_tmplow(sizeof(*mode_info));
-    struct jpeg_decdata *jpeg = jpeg_alloc();
-    if (!jpeg || !vesa_info || !mode_info) {
+    if (!vesa_info || !mode_info) {
         warn_noalloc();
         goto done;
     }
@@ -184,20 +197,48 @@ enable_bootsplash(void)
             vesa_info->vesa_version>>8, vesa_info->vesa_version&0xff,
             vendor, product);
 
-    // Parse jpeg and get image size.
-    dprintf(5, "Decoding bootsplash.jpg\n");
-    int ret = jpeg_decode(jpeg, filedata);
-    if (ret) {
-        dprintf(1, "jpeg_decode failed with return code %d...\n", ret);
-        goto done;
+    int ret, width, height;
+    int bpp_require = 0;
+    if (type == 0) {
+        jpeg = jpeg_alloc();
+        if (!jpeg) {
+            warn_noalloc();
+            goto done;
+        }
+        /* Parse jpeg and get image size. */
+        dprintf(5, "Decoding bootsplash.jpg\n");
+        ret = jpeg_decode(jpeg, filedata);
+        if (ret) {
+            dprintf(1, "jpeg_decode failed with return code %d...\n", ret);
+            goto done;
+        }
+        jpeg_get_size(jpeg, &width, &height);
+    } else {
+        bmp = bmp_alloc();
+        if (!bmp) {
+            warn_noalloc();
+            goto done;
+        }
+        /* Parse bmp and get image size. */
+        dprintf(5, "Decoding bootsplash.bmp\n");
+        ret = bmp_decode(bmp, filedata, filesize);
+        if (ret) {
+            dprintf(1, "bmp_decode failed with return code %d...\n", ret);
+            goto done;
+        }
+        bmp_get_size(bmp, &width, &height);
+        bpp_require = 24;
     }
-    int width, height;
-    jpeg_get_size(jpeg, &width, &height);
+    /* jpeg would use 16 or 24 bpp video mode, BMP use 24bpp mode only */
 
     // Try to find a graphics mode with the corresponding dimensions.
-    int videomode = find_videomode(vesa_info, mode_info, width, height);
-    if (videomode < 0)
+    int videomode = find_videomode(vesa_info, mode_info, width, height,
+                                       bpp_require);
+    if (videomode < 0) {
+        dprintf(1, "failed to find a videomode with %dx%d %dbpp (0=any).\n",
+                    width, height, bpp_require);
         goto done;
+    }
     void *framebuffer = mode_info->phys_base_ptr;
     int depth = mode_info->bits_per_pixel;
     dprintf(3, "mode: %04x\n", videomode);
@@ -206,17 +247,28 @@ enable_bootsplash(void)
     dprintf(3, "bits per pixel: %d\n", depth);
 
     // Allocate space for image and decompress it.
-    int imagesize = width * height * (depth / 8);
+    int imagesize = height * mode_info->bytes_per_scanline;
     picture = malloc_tmphigh(imagesize);
     if (!picture) {
         warn_noalloc();
         goto done;
     }
-    dprintf(5, "Decompressing bootsplash.jpg\n");
-    ret = jpeg_show(jpeg, picture, width, height, depth);
-    if (ret) {
-        dprintf(1, "jpeg_show failed with return code %d...\n", ret);
-        goto done;
+
+    if (type == 0) {
+        dprintf(5, "Decompressing bootsplash.jpg\n");
+        ret = jpeg_show(jpeg, picture, width, height, depth);
+        if (ret) {
+            dprintf(1, "jpeg_show failed with return code %d...\n", ret);
+            goto done;
+        }
+    } else {
+        dprintf(5, "Decompressing bootsplash.bmp\n");
+        ret = bmp_show(bmp, picture, width, height, depth,
+                           mode_info->bytes_per_scanline);
+        if (ret) {
+            dprintf(1, "bmp_show failed with return code %d...\n", ret);
+            goto done;
+        }
     }
 
     /* Switch to graphics mode */
@@ -231,7 +283,7 @@ enable_bootsplash(void)
     }
 
     /* Show the picture */
-    dprintf(5, "Showing bootsplash.jpg\n");
+    dprintf(5, "Showing bootsplash picture\n");
     iomemcpy(framebuffer, picture, imagesize);
     dprintf(5, "Bootsplash copy complete\n");
     BootsplashActive = 1;
@@ -242,6 +294,7 @@ done:
     free(vesa_info);
     free(mode_info);
     free(jpeg);
+    free(bmp);
     return;
 }