mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-09-24 15:54:12 +00:00
113 lines
No EOL
2.7 KiB
C++
113 lines
No EOL
2.7 KiB
C++
#include "BMPLoader.h"
|
|
#include "api__bmp.h"
|
|
#include <wchar.h>
|
|
#include <bfc/platform/strcmp.h>
|
|
|
|
static bool StringEnds(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
size_t aLen = wcslen(a);
|
|
size_t bLen = wcslen(b);
|
|
if (aLen < bLen) return false; // too short
|
|
return !_wcsicmp(a + aLen- bLen, b);
|
|
}
|
|
|
|
int BMPLoader::isMine(const wchar_t *filename)
|
|
{
|
|
return (filename && StringEnds(filename, L".BMP"));
|
|
}
|
|
|
|
const wchar_t *BMPLoader::mimeType()
|
|
{
|
|
return L"image/bmp";
|
|
}
|
|
|
|
int BMPLoader::getHeaderSize()
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
int BMPLoader::testData(const void *data, int datalen)
|
|
{
|
|
if(datalen < 2) return 0;
|
|
return *((WORD*)data) == (WORD)'MB';
|
|
}
|
|
|
|
static void writeFile(const wchar_t *file, const void * data, int length) {
|
|
FILE *f = _wfopen(file,L"wb");
|
|
if(!f) return;
|
|
fwrite(data,length,1,f);
|
|
fclose(f);
|
|
}
|
|
|
|
ARGB32 *BMPLoader::loadImage(const void *data, int datalen, int *w, int *h, ifc_xmlreaderparams *params)
|
|
{
|
|
int w0=0,h0=0;
|
|
if(!w) w = &w0;
|
|
if(!h) h = &h0;
|
|
|
|
wchar_t file[MAX_PATH] = {0};
|
|
GetTempPath(MAX_PATH, file);
|
|
GetTempFileName(file,L"wa5bmp",0,file);
|
|
writeFile(file,data,datalen);
|
|
|
|
HBITMAP hbmp = (HBITMAP)LoadImage(0, file, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_CREATEDIBSECTION);
|
|
|
|
_wunlink(file);
|
|
if(!hbmp) return 0;
|
|
BITMAP bm;
|
|
HDC hMemDC, hMemDC2;
|
|
HBITMAP hsrcdib;
|
|
void *srcdib;
|
|
BITMAPINFO srcbmi = {0, };
|
|
if(GetObject(hbmp, sizeof(BITMAP), &bm) == 0) { DeleteObject(hbmp); return 0; }
|
|
|
|
*w = bm.bmWidth;
|
|
*h = abs(bm.bmHeight);
|
|
|
|
ARGB32 *newbits=NULL;
|
|
srcbmi.bmiHeader.biSize = sizeof(srcbmi.bmiHeader);
|
|
srcbmi.bmiHeader.biWidth = *w;
|
|
srcbmi.bmiHeader.biHeight = -*h;
|
|
srcbmi.bmiHeader.biPlanes = 1;
|
|
srcbmi.bmiHeader.biBitCount = 32;
|
|
srcbmi.bmiHeader.biCompression = BI_RGB;
|
|
|
|
hMemDC = CreateCompatibleDC(NULL);
|
|
hMemDC2 = CreateCompatibleDC(NULL);
|
|
hsrcdib = CreateDIBSection(hMemDC, &srcbmi, DIB_RGB_COLORS, &srcdib, NULL, 0);
|
|
if(hsrcdib) {
|
|
HBITMAP hprev = (HBITMAP) SelectObject(hMemDC, hsrcdib);
|
|
HBITMAP hprev2 = (HBITMAP) SelectObject(hMemDC2, hbmp);
|
|
BitBlt(hMemDC, 0, 0, *w, *h, hMemDC2, 0, 0, SRCCOPY);
|
|
newbits = (ARGB32*)WASABI_API_MEMMGR->sysMalloc((*w) * (*h) * sizeof(ARGB32));
|
|
memcpy(newbits, srcdib, (*w)*(*h)*sizeof(ARGB32));
|
|
{
|
|
// put the alpha channel to 255
|
|
unsigned char *b = (unsigned char *)newbits;
|
|
int l = (*w) * (*h);
|
|
for (int i = 0;i < l;i++)
|
|
b[(i*4) + 3] = 0xff;
|
|
}
|
|
SelectObject(hMemDC, hprev);
|
|
SelectObject(hMemDC2, hprev2);
|
|
DeleteObject(hsrcdib);
|
|
}
|
|
DeleteDC(hMemDC2);
|
|
DeleteDC(hMemDC);
|
|
|
|
DeleteObject(hbmp);
|
|
|
|
return newbits;
|
|
}
|
|
|
|
#define CBCLASS BMPLoader
|
|
START_DISPATCH;
|
|
CB(ISMINE, isMine);
|
|
CB(MIMETYPE, mimeType);
|
|
CB(TESTDATA, testData);
|
|
CB(GETHEADERSIZE, getHeaderSize);
|
|
CB(GETDIMENSIONS, getDimensions);
|
|
CB(LOADIMAGE, loadImage);
|
|
CB(LOADIMAGEDATA, loadImageData);
|
|
END_DISPATCH;
|
|
#undef CBCLASS |