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/*
Copyright (C) 2009 Red Hat, Inc.
This library 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 library 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.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "common.h"
#include <map>
#include "platform_utils.h"
#include "utils.h"
#include "threads.h"
void string_vprintf(std::string& str, const char* format, va_list ap)
{
int buf_size = 256;
for (;;) {
AutoArray<char> buf(new char[buf_size]);
int r = vsnprintf_s(buf.get(), buf_size, buf_size - 1, format, ap);
if (r != -1) {
str = buf.get();
return;
}
buf_size *= 2;
}
}
HDC create_compatible_dc()
{
HDC dc = CreateCompatibleDC(NULL);
if (!dc) {
THROW("create compatible DC failed");
}
return dc;
}
HBITMAP get_bitmap_res(int id)
{
HBITMAP bitmap = LoadBitmap(GetModuleHandle(NULL), MAKEINTRESOURCE(id));
if (!bitmap) {
THROW("get bitmap #%d failed", id);
}
return bitmap;
}
HBITMAP get_alpha_bitmap_res(int id)
{
AutoGDIObject bitmap(LoadImage(GetModuleHandle(NULL), MAKEINTRESOURCE(id), IMAGE_BITMAP, 0, 0,
LR_DEFAULTCOLOR | LR_CREATEDIBSECTION | LR_SHARED));
if (!bitmap.valid()) {
THROW("get alpha bitmap #%d failed", id);
}
BITMAP src_info;
GetObject(bitmap.get(), sizeof(src_info), &src_info);
if (src_info.bmBitsPixel != 32 || src_info.bmPlanes != 1) {
THROW("invalid format #%d ", id);
}
LONG src_size = src_info.bmHeight * src_info.bmWidthBytes;
AutoArray<uint8_t> src_pixels(new uint8_t[src_size]);
LONG ncopy = GetBitmapBits((HBITMAP)bitmap.get(), src_size, src_pixels.get());
if (ncopy != src_size) {
THROW("get vitmap bits failed, %u", GetLastError());
}
AutoDC auto_dc(create_compatible_dc());
BITMAPINFO dest_info;
uint8_t* dest;
dest_info.bmiHeader.biSize = sizeof(dest_info.bmiHeader);
dest_info.bmiHeader.biWidth = src_info.bmWidth;
dest_info.bmiHeader.biHeight = -src_info.bmHeight;
dest_info.bmiHeader.biPlanes = 1;
dest_info.bmiHeader.biBitCount = 32;
dest_info.bmiHeader.biCompression = BI_RGB;
dest_info.bmiHeader.biSizeImage = 0;
dest_info.bmiHeader.biXPelsPerMeter = dest_info.bmiHeader.biYPelsPerMeter = 0;
dest_info.bmiHeader.biClrUsed = 0;
dest_info.bmiHeader.biClrImportant = 0;
HBITMAP ret = CreateDIBSection(auto_dc.get(), &dest_info, 0, (VOID**)&dest, NULL, 0);
if (!ret) {
THROW("create bitmap failed, %u", GetLastError());
}
uint8_t* src_line = src_pixels.get();
for (int i = 0; i < src_info.bmHeight; i++, src_line += src_info.bmWidthBytes) {
uint8_t* src = src_line;
for (int j = 0; j < src_info.bmWidth; j++) {
dest[3] = src[3];
double alpha = (double)dest[3] / 0xff;
dest[2] = (uint8_t)(alpha * src[2]);
dest[1] = (uint8_t)(alpha * src[1]);
dest[0] = (uint8_t)(alpha * src[0]);
src += 4;
dest += 4;
}
}
return ret;
}
static std::map<int, const char*> errors_map;
static Mutex errors_map_mutex;
const char* sys_err_to_str(int error)
{
Lock lock(errors_map_mutex);
if (errors_map.find(error) == errors_map.end()) {
LPSTR msg;
if (!FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, NULL, error,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPSTR)&msg, 0, NULL)) {
const int BUF_SIZE = 20;
msg = new char[BUF_SIZE];
_snprintf(msg, BUF_SIZE, "errno %d", error);
} else {
char* new_line;
if ((new_line = strrchr(msg, '\r'))) {
*new_line = 0;
}
}
errors_map[error] = msg;
}
return errors_map[error];
}
int inet_aton(const char* ip, struct in_addr* in_addr)
{
unsigned long addr = inet_addr(ip);
if (addr == INADDR_NONE) {
return 0;
}
in_addr->S_un.S_addr = addr;
return 1;
}
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