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capture.cpp
160 lines (129 loc) · 3.28 KB
/
capture.cpp
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#include "diablo.h"
DEVILUTION_BEGIN_NAMESPACE
void CaptureScreen()
{
HANDLE hObject;
PALETTEENTRY palette[256];
char FileName[MAX_PATH];
BOOL success;
hObject = CaptureFile(FileName);
if (hObject != INVALID_HANDLE_VALUE) {
DrawAndBlit();
PaletteGetEntries(256, palette);
RedPalette(palette);
lock_buf(2);
success = CaptureHdr(hObject, SCREEN_WIDTH, SCREEN_HEIGHT);
if (success) {
success = CapturePix(hObject, SCREEN_WIDTH, SCREEN_HEIGHT, BUFFER_WIDTH, &gpBuffer[SCREENXY(0, 0)]);
if (success) {
success = CapturePal(hObject, palette);
}
}
unlock_buf(2);
CloseHandle(hObject);
if (!success)
DeleteFile(FileName);
Sleep(300);
PaletteGetEntries(256, palette);
}
}
BOOL CaptureHdr(HANDLE hFile, short width, short height)
{
DWORD lpNumBytes;
PCXHEADER Buffer;
memset(&Buffer, 0, sizeof(Buffer));
Buffer.Manufacturer = 10;
Buffer.Version = 5;
Buffer.Encoding = 1;
Buffer.BitsPerPixel = 8;
Buffer.Xmax = width - 1;
Buffer.Ymax = height - 1;
Buffer.HDpi = width;
Buffer.VDpi = height;
Buffer.NPlanes = 1;
Buffer.BytesPerLine = width;
return WriteFile(hFile, &Buffer, sizeof(Buffer), &lpNumBytes, NULL) && lpNumBytes == sizeof(Buffer);
}
BOOL CapturePal(HANDLE hFile, PALETTEENTRY *palette)
{
DWORD NumberOfBytesWritten;
BYTE pcx_palette[769];
int i;
pcx_palette[0] = 12;
for (i = 0; i < 256; i++) {
pcx_palette[1 + 3 * i + 0] = palette[i].peRed;
pcx_palette[1 + 3 * i + 1] = palette[i].peGreen;
pcx_palette[1 + 3 * i + 2] = palette[i].peBlue;
}
return WriteFile(hFile, pcx_palette, 769, &NumberOfBytesWritten, 0) && NumberOfBytesWritten == 769;
}
BOOL CapturePix(HANDLE hFile, WORD width, WORD height, WORD stride, BYTE *pixels)
{
int writeSize;
DWORD lpNumBytes;
BYTE *pBuffer, *pBufferEnd;
pBuffer = (BYTE *)DiabloAllocPtr(2 * width);
while (height != 0) {
height--;
pBufferEnd = CaptureEnc(pixels, pBuffer, width);
pixels += stride;
writeSize = pBufferEnd - pBuffer;
if (!(WriteFile(hFile, pBuffer, writeSize, &lpNumBytes, 0) && lpNumBytes == writeSize)) {
return FALSE;
}
}
mem_free_dbg(pBuffer);
return TRUE;
}
BYTE *CaptureEnc(BYTE *src, BYTE *dst, int width)
{
int rleLength;
do {
BYTE rlePixel = *src;
*src++;
rleLength = 1;
width--;
while (rlePixel == *src) {
if (rleLength >= 63)
break;
if (!width)
break;
rleLength++;
width--;
src++;
}
if (rleLength > 1 || rlePixel > 0xBF) {
*dst = rleLength | 0xC0;
*dst++;
}
*dst = rlePixel;
*dst++;
} while (width);
return dst;
}
HANDLE CaptureFile(char *dst_path)
{
int len = GetModuleFileNameA(ghInst, dst_path, MAX_PATH);
for (int i = 0; i <= 99; i++) {
sprintf(&dst_path[len], "screen%02d.PCX", i);
FILE *file = fopen(dst_path, "r");
if (file == NULL) {
return CreateFile(dst_path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
}
fclose(file);
}
return INVALID_HANDLE_VALUE;
}
void RedPalette(PALETTEENTRY *pal)
{
PALETTEENTRY red[256];
int i;
for (i = 0; i < 256; i++) {
red[i].peRed = pal[i].peRed;
red[i].peGreen = 0;
red[i].peBlue = 0;
red[i].peFlags = 0;
}
PaletteGetEntries(256, red);
}
DEVILUTION_END_NAMESPACE