static void
copy_pixel_row(const JSAMPROW jpegbuffer, const int width,
const unsigned int samples_per_pixel,
const enum colorspace color_space,
const unsigned int maxval,
FILE * const output_file, const int output_type) {
JSAMPLE *ptr;
unsigned int output_cursor; /* Cursor into output buffer 'pnmbuffer' */
ptr = jpegbuffer; /* Start at beginning of input row */
for (output_cursor = 0; output_cursor < width; output_cursor++) {
xel current_pixel;
if (samples_per_pixel >= 3) {
const rgb_type * const rgb_p = read_rgb(ptr, color_space, maxval);
PPM_ASSIGN(current_pixel, rgb_p->r, rgb_p->g, rgb_p->b);
} else {
PNM_ASSIGN1(current_pixel, GETJSAMPLE(*ptr));
}
ptr += samples_per_pixel; /* move to next pixel of input */
pnmbuffer[output_cursor] = current_pixel;
}
pnm_writepnmrow(output_file, pnmbuffer, width,
maxval, output_type, FALSE);
}
static void
copyPixelRow(JSAMPROW const jpegbuffer,
unsigned int const width,
unsigned int const samplesPerPixel,
enum colorspace const colorSpace,
FILE * const ofP,
int const format,
xelval const maxval) {
JSAMPLE * ptr;
unsigned int outputCursor; /* Cursor into output buffer 'pnmbuffer' */
ptr = &jpegbuffer[0]; /* Start at beginning of input row */
for (outputCursor = 0; outputCursor < width; ++outputCursor) {
xel currentPixel;
if (samplesPerPixel >= 3) {
const rgb_type * const rgb_p = read_rgb(ptr, colorSpace, maxval);
PPM_ASSIGN(currentPixel, rgb_p->r, rgb_p->g, rgb_p->b);
} else {
PNM_ASSIGN1(currentPixel, GETJSAMPLE(*ptr));
}
ptr += samplesPerPixel; /* move to next pixel of input */
pnmbuffer[outputCursor] = currentPixel;
}
pnm_writepnmrow(ofP, pnmbuffer, width, maxval, format, FALSE);
}
bool Image_TIFF::load_tiff(char * fname)
{
tiff_handle = TIFFOpen(fname, "r");
TIFFGetField(tiff_handle, TIFFTAG_IMAGEWIDTH, &_width);
TIFFGetField(tiff_handle, TIFFTAG_IMAGELENGTH, &_height);
_size = _width * _height;
TIFFGetField(tiff_handle, TIFFTAG_BITSPERSAMPLE, &_depth);
TIFFGetField(tiff_handle, TIFFTAG_SAMPLESPERPIXEL, &_comps);
TIFFGetField(tiff_handle, TIFFTAG_FILLORDER, &_order);
TIFFGetField(tiff_handle, TIFFTAG_PLANARCONFIG, &_config);
if (_comps <= 0 || _comps > 4) return false;
if (_comps == 1) // gray scale data
{
init_gs();
read_gs();
}
else if (_comps == 3)
{
init_rgb();
read_rgb();
}
else
{
printf("..tiff found %d-samples per pixel (not supported) abort.\n", _comps);
clear_gs();
clear_rgb();
return false;
}
printf("..libtiff loaded [%dx%d], depth(%d), comps(%d) image\n",_width, _height, _depth, _comps);
return true;
}
static void bmpload_pixel(t_bmpfile *bmp, unsigned char *oct)
{
unsigned int i;
i = -1;
while (++i < bmp->bmp.width * bmp->bmp.height)
{
bmp->pixels[i] = read_rgb(oct + bmp->header.offset + i * 3);
}
}
void rgba::read(stream* in, int tag_type)
{
if (tag_type <= 22)
{
read_rgb(in);
}
else
{
read_rgba(in);
}
}
int main(void)
{
int result = -1;
int Red=0,Green=0,Blue=0;
result = init_rgb();
if (result > 0)
{
while (1)
{
int value = -1;
value = read_rgb(&Red,&Green,&Blue);
printf(" Red : %d , Green = %d , Blue = %d\n",Red,Green,Blue);
usleep( 100 * 1000 );
}
}
}
void rgba::read_rgba(stream* in)
{
read_rgb(in);
m_a = in->read_u8();
}
// read one stroke from file stream
// if successed,return the file position after reading one stroke
// else return -1
// pay attention to call this function,
// we should guarantee file position should stop at the beginning of stroke
long read_stroke (FILE * file, PtrStroke stroke)
{
int i;
PtrInkPoint point;
if (file == NULL || stroke == NULL)
{
SB_INKERRPRINTF("failed:incorrect arguments\n");
return -1;
}
if ( !read_integer(&(stroke->iPenSize), file) )
{
SB_INKPRINTF("failed getting stroke->iPenSize\n");
return -1;
}
//read rgb
if ( !read_rgb(&stroke->gdkColor,file) )
{
SB_INKERRPRINTF("failed write rgb\n");
return 0;
}
if ( !read_integer(&(stroke->nPoints), file) )
{
SB_INKERRPRINTF("failed getting stroke->nPoints\n");
return -1;
}
SB_INKPRINTF("npoints=%d,ipensize=%d\n",
stroke->nPoints,stroke->iPenSize);
if ( stroke->nPoints == 0)
{
SB_INKPRINTF("returned because of stroke->nPoints=0\n");
return ftell (file);//lPos
}
//stroke->nPoints will be changed in iteration,so we should keep it.
int nTotalPoints=stroke->nPoints;
for (i = 0; i < nTotalPoints; i++)
{
point = construct_point ();
if ( NULL==point )
{
SB_INKERRPRINTF("construct point error\n");
return -1;
}
if ( !read_integer (&(point->x), file) )
{
SB_INKERRPRINTF("failed getting (point%d->x)\n",i);
return -1;
}
if ( !read_integer (&(point->y), file) )
{
SB_INKERRPRINTF("failed getting (point%d->y)\n",i);
return -1;
}
//SB_INKPRINTF("point(%d,%d) \n", point->x, point->y);
ink_add_point(stroke, point);
}
return ftell (file);//current file pointer position
}
void read( string fn, tImgLinear& rimg ) {
std::vector<uint8_t> buf;
bin_read::t_bin_read reader;
reader( fn, buf );
FILEHEADER const* fileheader = referenceToFILEHEADER( buf );
uint16_t sig = fileheader->signature;
if( sig != BMP_signature ) {
return ;
}
if( buf.size() == fileheader->size ) {
try {
INFO const* bitmapinfoheader = referenceToINFO( buf );
uint32_t w = info_width( bitmapinfoheader );
uint32_t h = info_height( bitmapinfoheader );
// copy data to tImgLinear
rimg.size() = tSize( w, h );
uint8_t const* pbuf = &buf[0];
uint8_t const* dataptr = pbuf + fileheader->offset_bits;
// 8 bit
if( bitmapinfoheader->bit_count == 8 ) {
// LUT is not supported, convert to rgb, if lut is not an gray ramp lut
tBGRA const* lut = referenceToLUT( buf );
if( is_ramp( lut ) ) {
rimg.set_mono8();
rimg.alloc_data_buffer();
read_8bit( dataptr, rimg.size(), rimg.rows() );
return;
}
if( is_zero( lut ) ) {
rimg.set_mono8();
rimg.alloc_data_buffer();
read_8bit( dataptr, rimg.size(), rimg.rows() );
return;
}
rimg.set_rgb();
rimg.alloc_data_buffer();
read_8bit_as_rgb( lut, dataptr, rimg.size(), rimg.rows() );
return;
}
// 24 bit
if( bitmapinfoheader->bit_count == 24 ) {
rimg.set_rgb();
rimg.alloc_data_buffer();
read_rgb( dataptr, rimg.size(), rimg.rows() );
}
if( bitmapinfoheader->bit_count == 32 ) {
// read an rgba image, write an rgb image, alpha is lost
rimg.set_rgba();
rimg.alloc_data_buffer();
read_rgba( dataptr, rimg.size(), rimg.rows() );
}
} catch( tImgAllocEx& ex ) {
throw tImgReadEx( ex.what() );
}
}
}