本文整理汇总了C++中BitmapStorage::PutIndexPixels方法的典型用法代码示例。如果您正苦于以下问题：C++ BitmapStorage::PutIndexPixels方法的具体用法？C++ BitmapStorage::PutIndexPixels怎么用？C++ BitmapStorage::PutIndexPixels使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类BitmapStorage的用法示例。
在下文中一共展示了BitmapStorage::PutIndexPixels方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: palette
//.........这里部分代码省略.........
png_destroy_read_struct (&png, &info, NULL);
return NULL;
}
row_pointers = (png_bytep *)malloc(info->height * sizeof(png_bytep));
for (png_uint_32 i = 0; i < info->height; i++)
row_pointers[i] = (png_bytep)malloc(info->rowbytes);
// now read the image
png_read_image(png, row_pointers);
switch(bmtype) {
case BMM_LINE_ART: {
BMM_Color_64 *line64 = (BMM_Color_64 *) calloc(info->width, sizeof(BMM_Color_64));
for (png_uint_32 iy = 0; iy < info->height; iy++) {
BMM_Color_64 *l64 = line64;
for (png_uint_32 ix = 0; ix < info->width; ix++,l64++) {
png_uint_32 abyte = ix / 8;
png_uint_32 abit = ix % 8;
unsigned char tbyte = row_pointers[iy][abyte];
unsigned char c = tbyte & (0x80 >> abit);
l64->r = l64->g = l64->b = c ? 0xffff : 0;
l64->a = 0;
}
storage->PutPixels(0, iy, info->width, line64);
}
free(line64);
}
break;
case BMM_PALETTED: {
if (info->bit_depth == 8) {
for (png_uint_32 iy = 0; iy < info->height; iy++)
storage->PutIndexPixels(0, iy, info->width, row_pointers[iy]);
} else {
unsigned char *pixels = (unsigned char *)calloc(info->width, sizeof(unsigned char));
for (png_uint_32 iy = 0; iy < info->height; iy++) {
// now fill a row of pixels
unsigned char *inbyte = row_pointers[iy];
for (png_uint_32 ix = 0; ix < info->width; inbyte++) {
switch(info->bit_depth) {
case 2:
pixels[ix] = (*inbyte & 0xc0) >> 6;
ix++; if (ix >= info->width) break;
pixels[ix] = (*inbyte & 0x30) >> 4;
ix++; if (ix >= info->width) break;
pixels[ix] = (*inbyte & 0x0c) >> 2;
ix++; if (ix >= info->width) break;
pixels[ix] = *inbyte & 0x03;
ix++;
break;
case 4:
pixels[ix] = (*inbyte & 0xf0) >> 4;
ix++; if (ix >= info->width) break;
pixels[ix] = *inbyte & 0x0f;
ix++;
break;
}
}
storage->PutIndexPixels(0, iy, info->width, pixels);
}
free(pixels);
}
// Now the palette
PixelBuf48 palette(256);
BMM_Color_48 *palout = palette.Ptr();示例2: file
//.........这里部分代码省略.........
free(pal);
free(rgb);
pal = NULL;
rgb = NULL;
//-- Read Image (4 Bits) -----------------------------
w = fbi->Width();
wb = ( ((fbi->Width()+1)/2)+ 3) & ~3; // width must be multiple of 4
h = fbi->Height() - 1;
p = (BYTE *)malloc(wb);
b4 = (BYTE *)malloc(w);
if (!p || !b4)
goto memory_error_out;
do
{
pixels = fread(p,1,wb,file.stream);
if (pixels != wb && pixels != 0)
goto io_error_out;
if (pixels)
{
// -- the 4bit buffer p has two pixels per byte.
// -- convert it to 8 bit buffer b8 that has one pixel per byte
for(j=0;j<w;j++)
{
b4[j] = (j%2) ? (p[j/2] & 0x0f) : (p[j/2] >> 4);
}
s->PutIndexPixels(0,(h - rows),w,b4);
rows++;
if (rows>h) break;
}
//-- Progress Report
if (fbi->GetUpdateWindow())
SendMessage(fbi->GetUpdateWindow(),BMM_PROGRESS,rows,h);
} while (pixels);
break;
case 8:
//-- Read 8 bitPalette ------------------------------------
if (!bmi.biClrUsed)
bmi.biClrUsed = 256;
rgb = (RGBQUAD *)malloc(bmi.biClrUsed * sizeof(RGBQUAD));
if (!rgb)
goto memory_error_out;
pal = (BMM_Color_48 *)malloc(bmi.biClrUsed * sizeof(BMM_Color_48));
if (!pal)
goto memory_error_out;
if (fread(rgb,sizeof(RGBQUAD),bmi.biClrUsed,file.stream) != bmi.biClrUsed)
goto io_error_out;
for ( j = 0; j < (int)bmi.biClrUsed; j++)
{
pal[j].r = rgb[j].rgbRed << 8;
pal[j].g = rgb[j].rgbGreen << 8;
pal[j].b = rgb[j].rgbBlue << 8;
}