From f7a649ae84b76e91ab70db924190727f9a2b7c22 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Sun, 12 Jun 2016 17:44:16 -0400 Subject: ./move.sh --- src/grp-boot/systemd-boot/splash.c | 321 +++++++++++++++++++++++++++++++++++++ 1 file changed, 321 insertions(+) create mode 100644 src/grp-boot/systemd-boot/splash.c (limited to 'src/grp-boot/systemd-boot/splash.c') diff --git a/src/grp-boot/systemd-boot/splash.c b/src/grp-boot/systemd-boot/splash.c new file mode 100644 index 0000000000..c0ef7f64fe --- /dev/null +++ b/src/grp-boot/systemd-boot/splash.c @@ -0,0 +1,321 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 2.1 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * Copyright (C) 2012-2013 Kay Sievers + * Copyright (C) 2012 Harald Hoyer + */ + +#include +#include + +#include "graphics.h" +#include "splash.h" +#include "util.h" + +struct bmp_file { + CHAR8 signature[2]; + UINT32 size; + UINT16 reserved[2]; + UINT32 offset; +} __attribute__((packed)); + +/* we require at least BITMAPINFOHEADER, later versions are + accepted, but their features ignored */ +struct bmp_dib { + UINT32 size; + UINT32 x; + UINT32 y; + UINT16 planes; + UINT16 depth; + UINT32 compression; + UINT32 image_size; + INT32 x_pixel_meter; + INT32 y_pixel_meter; + UINT32 colors_used; + UINT32 colors_important; +} __attribute__((packed)); + +struct bmp_map { + UINT8 blue; + UINT8 green; + UINT8 red; + UINT8 reserved; +} __attribute__((packed)); + +EFI_STATUS bmp_parse_header(UINT8 *bmp, UINTN size, struct bmp_dib **ret_dib, + struct bmp_map **ret_map, UINT8 **pixmap) { + struct bmp_file *file; + struct bmp_dib *dib; + struct bmp_map *map; + UINTN row_size; + + if (size < sizeof(struct bmp_file) + sizeof(struct bmp_dib)) + return EFI_INVALID_PARAMETER; + + /* check file header */ + file = (struct bmp_file *)bmp; + if (file->signature[0] != 'B' || file->signature[1] != 'M') + return EFI_INVALID_PARAMETER; + if (file->size != size) + return EFI_INVALID_PARAMETER; + if (file->size < file->offset) + return EFI_INVALID_PARAMETER; + + /* check device-independent bitmap */ + dib = (struct bmp_dib *)(bmp + sizeof(struct bmp_file)); + if (dib->size < sizeof(struct bmp_dib)) + return EFI_UNSUPPORTED; + + switch (dib->depth) { + case 1: + case 4: + case 8: + case 24: + if (dib->compression != 0) + return EFI_UNSUPPORTED; + + break; + + case 16: + case 32: + if (dib->compression != 0 && dib->compression != 3) + return EFI_UNSUPPORTED; + + break; + + default: + return EFI_UNSUPPORTED; + } + + row_size = ((UINTN) dib->depth * dib->x + 31) / 32 * 4; + if (file->size - file->offset < dib->y * row_size) + return EFI_INVALID_PARAMETER; + if (row_size * dib->y > 64 * 1024 * 1024) + return EFI_INVALID_PARAMETER; + + /* check color table */ + map = (struct bmp_map *)(bmp + sizeof(struct bmp_file) + dib->size); + if (file->offset < sizeof(struct bmp_file) + dib->size) + return EFI_INVALID_PARAMETER; + + if (file->offset > sizeof(struct bmp_file) + dib->size) { + UINT32 map_count; + UINTN map_size; + + if (dib->colors_used) + map_count = dib->colors_used; + else { + switch (dib->depth) { + case 1: + case 4: + case 8: + map_count = 1 << dib->depth; + break; + + default: + map_count = 0; + break; + } + } + + map_size = file->offset - (sizeof(struct bmp_file) + dib->size); + if (map_size != sizeof(struct bmp_map) * map_count) + return EFI_INVALID_PARAMETER; + } + + *ret_map = map; + *ret_dib = dib; + *pixmap = bmp + file->offset; + + return EFI_SUCCESS; +} + +static VOID pixel_blend(UINT32 *dst, const UINT32 source) { + UINT32 alpha, src, src_rb, src_g, dst_rb, dst_g, rb, g; + + alpha = (source & 0xff); + + /* convert src from RGBA to XRGB */ + src = source >> 8; + + /* decompose into RB and G components */ + src_rb = (src & 0xff00ff); + src_g = (src & 0x00ff00); + + dst_rb = (*dst & 0xff00ff); + dst_g = (*dst & 0x00ff00); + + /* blend */ + rb = ((((src_rb - dst_rb) * alpha + 0x800080) >> 8) + dst_rb) & 0xff00ff; + g = ((((src_g - dst_g) * alpha + 0x008000) >> 8) + dst_g) & 0x00ff00; + + *dst = (rb | g); +} + +EFI_STATUS bmp_to_blt(EFI_GRAPHICS_OUTPUT_BLT_PIXEL *buf, + struct bmp_dib *dib, struct bmp_map *map, + UINT8 *pixmap) { + UINT8 *in; + UINTN y; + + /* transform and copy pixels */ + in = pixmap; + for (y = 0; y < dib->y; y++) { + EFI_GRAPHICS_OUTPUT_BLT_PIXEL *out; + UINTN row_size; + UINTN x; + + out = &buf[(dib->y - y - 1) * dib->x]; + for (x = 0; x < dib->x; x++, in++, out++) { + switch (dib->depth) { + case 1: { + UINTN i; + + for (i = 0; i < 8 && x < dib->x; i++) { + out->Red = map[((*in) >> (7 - i)) & 1].red; + out->Green = map[((*in) >> (7 - i)) & 1].green; + out->Blue = map[((*in) >> (7 - i)) & 1].blue; + out++; + x++; + } + out--; + x--; + break; + } + + case 4: { + UINTN i; + + i = (*in) >> 4; + out->Red = map[i].red; + out->Green = map[i].green; + out->Blue = map[i].blue; + if (x < (dib->x - 1)) { + out++; + x++; + i = (*in) & 0x0f; + out->Red = map[i].red; + out->Green = map[i].green; + out->Blue = map[i].blue; + } + break; + } + + case 8: + out->Red = map[*in].red; + out->Green = map[*in].green; + out->Blue = map[*in].blue; + break; + + case 16: { + UINT16 i = *(UINT16 *) in; + + out->Red = (i & 0x7c00) >> 7; + out->Green = (i & 0x3e0) >> 2; + out->Blue = (i & 0x1f) << 3; + in += 1; + break; + } + + case 24: + out->Red = in[2]; + out->Green = in[1]; + out->Blue = in[0]; + in += 2; + break; + + case 32: { + UINT32 i = *(UINT32 *) in; + + pixel_blend((UINT32 *)out, i); + + in += 3; + break; + } + } + } + + /* add row padding; new lines always start at 32 bit boundary */ + row_size = in - pixmap; + in += ((row_size + 3) & ~3) - row_size; + } + + return EFI_SUCCESS; +} + +EFI_STATUS graphics_splash(UINT8 *content, UINTN len, const EFI_GRAPHICS_OUTPUT_BLT_PIXEL *background) { + EFI_GRAPHICS_OUTPUT_BLT_PIXEL pixel = {}; + EFI_GUID GraphicsOutputProtocolGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; + EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput = NULL; + struct bmp_dib *dib; + struct bmp_map *map; + UINT8 *pixmap; + UINT64 blt_size; + VOID *blt = NULL; + UINTN x_pos = 0; + UINTN y_pos = 0; + EFI_STATUS err; + + if (!background) { + if (StriCmp(L"Apple", ST->FirmwareVendor) == 0) { + pixel.Red = 0xc0; + pixel.Green = 0xc0; + pixel.Blue = 0xc0; + } + background = &pixel; + } + + err = LibLocateProtocol(&GraphicsOutputProtocolGuid, (VOID **)&GraphicsOutput); + if (EFI_ERROR(err)) + return err; + + err = bmp_parse_header(content, len, &dib, &map, &pixmap); + if (EFI_ERROR(err)) + goto err; + + if (dib->x < GraphicsOutput->Mode->Info->HorizontalResolution) + x_pos = (GraphicsOutput->Mode->Info->HorizontalResolution - dib->x) / 2; + if (dib->y < GraphicsOutput->Mode->Info->VerticalResolution) + y_pos = (GraphicsOutput->Mode->Info->VerticalResolution - dib->y) / 2; + + uefi_call_wrapper(GraphicsOutput->Blt, 10, GraphicsOutput, + (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *)background, + EfiBltVideoFill, 0, 0, 0, 0, + GraphicsOutput->Mode->Info->HorizontalResolution, + GraphicsOutput->Mode->Info->VerticalResolution, 0); + + /* EFI buffer */ + blt_size = dib->x * dib->y * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL); + blt = AllocatePool(blt_size); + if (!blt) + return EFI_OUT_OF_RESOURCES; + + err = uefi_call_wrapper(GraphicsOutput->Blt, 10, GraphicsOutput, + blt, EfiBltVideoToBltBuffer, x_pos, y_pos, 0, 0, + dib->x, dib->y, 0); + if (EFI_ERROR(err)) + goto err; + + err = bmp_to_blt(blt, dib, map, pixmap); + if (EFI_ERROR(err)) + goto err; + + err = graphics_mode(TRUE); + if (EFI_ERROR(err)) + goto err; + + err = uefi_call_wrapper(GraphicsOutput->Blt, 10, GraphicsOutput, + blt, EfiBltBufferToVideo, 0, 0, x_pos, y_pos, + dib->x, dib->y, 0); +err: + FreePool(blt); + return err; +} -- cgit v1.2.3-54-g00ecf