bool CxImageSKA::Decode(CxFile *hFile)
{
if (hFile==NULL)
return false;
// read the header
SKAHEADER ska_header;
hFile->Read(&ska_header,sizeof(SKAHEADER),1);
ska_header.Width = ntohs(ska_header.Width);
ska_header.Height = ntohs(ska_header.Height);
ska_header.dwUnknown = ntohl(ska_header.dwUnknown);
// check header
if (ska_header.dwUnknown != 0x01000000 ||
ska_header.Width > 0x7FFF || ska_header.Height > 0x7FFF ||
ska_header.BppExp != 3)
return false;
if (info.nEscape == -1){
head.biWidth = ska_header.Width ;
head.biHeight= ska_header.Height;
info.dwType = CXIMAGE_FORMAT_SKA;
return true;
}
int bpp = 1<<ska_header.BppExp;
Create(ska_header.Width,ska_header.Height,bpp,CXIMAGE_FORMAT_SKA);
if (!IsValid())
return false;
// read the palette
int nColors = 1<<bpp;
rgb_color* ppal = (rgb_color*)malloc(nColors*sizeof(rgb_color));
if (!ppal) return false;
hFile->Read(ppal,nColors*sizeof(rgb_color),1);
SetPalette(ppal,nColors);
free(ppal);
//read the image
hFile->Read(GetBits(),ska_header.Width*ska_header.Height,1);
//reorder rows
if (GetEffWidth() != ska_header.Width){
BYTE *src,*dst;
src = GetBits() + ska_header.Width*(ska_header.Height-1);
dst = GetBits(ska_header.Height-1);
for(int y=0;y<ska_header.Height;y++){
memcpy(dst,src,ska_header.Width);
src -= ska_header.Width;
dst -= GetEffWidth();
}
}
Flip();
return true;
}
bool CxImageSKA::Encode(CxFile * hFile)
{
if (EncodeSafeCheck(hFile)) return false;
if(head.biBitCount > 8) {
strcpy(info.szLastError,"SKA Images must be 8 bit or less");
return false;
}
SKAHEADER ska_header;
ska_header.Width = (unsigned short)GetWidth();
ska_header.Height = (unsigned short)GetHeight();
ska_header.BppExp = 3;
ska_header.dwUnknown = 0x01000000;
ska_header.Width = ntohs(ska_header.Width);
ska_header.Height = ntohs(ska_header.Height);
ska_header.dwUnknown = ntohl(ska_header.dwUnknown);
hFile->Write(&ska_header,sizeof(SKAHEADER),1);
ska_header.Width = ntohs(ska_header.Width);
ska_header.Height = ntohs(ska_header.Height);
ska_header.dwUnknown = ntohl(ska_header.dwUnknown);
if (head.biBitCount<8) IncreaseBpp(8);
rgb_color pal[256];
for(int idx=0; idx<256; idx++){
GetPaletteColor(idx,&(pal[idx].r),&(pal[idx].g),&(pal[idx].b));
}
hFile->Write(pal,256*sizeof(rgb_color),1);
BYTE* src = GetBits(ska_header.Height-1);
for(int y=0;y<ska_header.Height;y++){
hFile->Write(src,ska_header.Width,1);
src -= GetEffWidth();
}
return true;
}
bool CxImageRAW::Decode(CxFile *hFile)
{
return false;
#if 0
if (hFile==NULL)
return false;
if (mutexInitialized == false)
{
#ifdef _LINUX
pthread_mutex_init(&rawMutex, 0);
#else
rawMutex = ::CreateMutex(NULL, false, NULL);
#endif
mutexInitialized = true;
}
#ifdef _LINUX
pthread_mutex_lock(&rawMutex);
#else
::WaitForSingleObject(rawMutex, INFINITE);
#endif
DCRAW dcr;
cx_try
{
// initialization
dcr_init_dcraw(&dcr);
dcr.opt.user_qual = GetCodecOption(CXIMAGE_FORMAT_RAW) & 0x03;
// setup variables for debugging
char szClass[] = "CxImageRAW";
dcr.ifname = szClass;
dcr.sz_error = info.szLastError;
// setup library options, see dcr_print_manual for the available switches
// call dcr_parse_command_line_options(&dcr,0,0,0) to set default options
// if (dcr_parse_command_line_options(&dcr,argc,argv,&arg))
if (dcr_parse_command_line_options(&dcr,0,0,0)){
cx_throw("CxImageRAW: unknown option");
}
// set return point for error handling
if (setjmp (dcr.failure)) {
cx_throw("");
}
// install file manager
CxFileRaw src(hFile,&dcr);
// check file header
dcr_identify(&dcr);
if(!dcr.is_raw){
cx_throw("CxImageRAW: not a raw image");
}
if (dcr.load_raw == NULL) {
cx_throw("CxImageRAW: missing raw decoder");
}
// verify special case
if (dcr.load_raw == dcr_kodak_ycbcr_load_raw) {
dcr.height += dcr.height & 1;
dcr.width += dcr.width & 1;
}
if (info.nEscape == -1){
head.biWidth = dcr.width;
head.biHeight= dcr.height;
info.dwType = CXIMAGE_FORMAT_RAW;
cx_throw("output dimensions returned");
}
// shrinked decoding available and requested?
dcr.shrink = dcr.filters && (dcr.opt.half_size || dcr.opt.threshold || dcr.opt.aber[0] != 1 || dcr.opt.aber[2] != 1);
dcr.iheight = (dcr.height + dcr.shrink) >> dcr.shrink;
dcr.iwidth = (dcr.width + dcr.shrink) >> dcr.shrink;
// install custom camera matrix
if (dcr.opt.use_camera_matrix && dcr.cmatrix[0][0] > 0.25) {
memcpy (dcr.rgb_cam, dcr.cmatrix, sizeof dcr.cmatrix);
dcr.raw_color = 0;
}
else {
dcr.opt.use_camera_wb = 1;
}
// allocate memory for the image
dcr.image = (ushort (*)[4]) calloc (dcr.iheight*dcr.iwidth, sizeof *dcr.image);
dcr_merror (&dcr, dcr.image, szClass);
if (dcr.meta_length) {
dcr.meta_data = (char *) malloc (dcr.meta_length);
dcr_merror (&dcr, dcr.meta_data, szClass);
}
// start image decoder
hFile->Seek(dcr.data_offset, SEEK_SET);
(*dcr.load_raw)(&dcr);
// post processing
if (dcr.zero_is_bad) dcr_remove_zeroes(&dcr);
dcr_bad_pixels(&dcr,NULL);
if (dcr.opt.dark_frame) dcr_subtract (&dcr,dcr.opt.dark_frame);
dcr.quality = 2 + !dcr.fuji_width;
if (dcr.opt.user_qual >= 0) dcr.quality = dcr.opt.user_qual;
if (dcr.opt.user_black >= 0) dcr.black = dcr.opt.user_black;
#ifdef COLORCHECK
dcr_colorcheck(&dcr);
#endif
#if RESTRICTED
if (dcr.is_foveon && !dcr.opt.document_mode) dcr_foveon_interpolate(&dcr);
#endif
if (!dcr.is_foveon && dcr.opt.document_mode < 2) dcr_scale_colors(&dcr);
// pixel interpolation and filters
dcr_pre_interpolate(&dcr);
if (dcr.filters && !dcr.opt.document_mode) {
if (dcr.quality == 0)
dcr_lin_interpolate(&dcr);
else if (dcr.quality == 1 || dcr.colors > 3)
dcr_vng_interpolate(&dcr);
else if (dcr.quality == 2)
dcr_ppg_interpolate(&dcr);
else
dcr_ahd_interpolate(&dcr);
}
if (dcr.mix_green) {
long i;
for (dcr.colors=3, i=0; i < dcr.height*dcr.width; i++) {
dcr.image[i][1] = (dcr.image[i][1] + dcr.image[i][3]) >> 1;
}
}
if (!dcr.is_foveon && dcr.colors == 3) dcr_median_filter(&dcr);
if (!dcr.is_foveon && dcr.opt.highlight == 2) dcr_blend_highlights(&dcr);
if (!dcr.is_foveon && dcr.opt.highlight > 2) dcr_recover_highlights(&dcr);
if (dcr.opt.use_fuji_rotate) dcr_fuji_rotate(&dcr);
#ifndef NO_LCMS
if (dcr.opt.cam_profile) dcr_apply_profile (dcr.opt.cam_profile, dcr.opt.out_profile);
#endif
// final conversion
dcr_convert_to_rgb(&dcr);
if (dcr.opt.use_fuji_rotate) dcr_stretch(&dcr);
dcr.iheight = dcr.height;
dcr.iwidth = dcr.width;
if (dcr.flip & 4) SWAP(dcr.height,dcr.width);
// ready to transfer data from dcr.image
if (!Create(dcr.width,dcr.height,24,CXIMAGE_FORMAT_RAW)){
cx_throw("");
}
uchar *ppm = (uchar *) calloc (dcr.width, dcr.colors*dcr.opt.output_bps/8);
ushort *ppm2 = (ushort *) ppm;
dcr_merror (&dcr, ppm, szClass);
uchar lut[0x10000];
if (dcr.opt.output_bps == 8) dcr_gamma_lut (&dcr, lut);
long c, row, col, soff, rstep, cstep;
soff = dcr_flip_index (&dcr, 0, 0);
cstep = dcr_flip_index (&dcr, 0, 1) - soff;
rstep = dcr_flip_index (&dcr, 1, 0) - dcr_flip_index (&dcr, 0, dcr.width);
for (row=0; row < dcr.height; row++, soff += rstep) {
for (col=0; col < dcr.width; col++, soff += cstep) {
if (dcr.opt.output_bps == 8)
for (c=0; c < dcr.colors; c++) ppm [col*dcr.colors+c] = lut[dcr.image[soff][c]];
else
for (c=0; c < dcr.colors; c++) ppm2[col*dcr.colors+c] = dcr.image[soff][c];
}
if (dcr.opt.output_bps == 16 && !dcr.opt.output_tiff && htons(0x55aa) != 0x55aa)
#if defined(_LINUX) || defined(__APPLE__)
swab ((char*)ppm2, (char*)ppm2, dcr.width*dcr.colors*2);
#else
_swab ((char*)ppm2, (char*)ppm2, dcr.width*dcr.colors*2);
#endif
DWORD size = dcr.width * (dcr.colors*dcr.opt.output_bps/8);
RGBtoBGR(ppm,size);
memcpy(GetBits(dcr.height - 1 - row), ppm, min(size,GetEffWidth()));
}
free (ppm);
dcr_cleanup_dcraw(&dcr);
#ifdef _LINUX
pthread_mutex_unlock(&rawMutex);
#else
::ReleaseMutex(rawMutex);
#endif
} cx_catch {
