/*
==============
LoadPCX32
==============
*/
RGBAImagePtr LoadPCX32Buff(byte* buffer, std::size_t length)
{
byte *palette;
byte *pic8;
int i, c, p, width, height;
byte *pic32;
LoadPCXBuff(buffer, length, &pic8, &palette, &width, &height);
if (!pic8)
{
return RGBAImagePtr();
}
RGBAImagePtr image (new RGBAImage(width, height));
c = (width) * (height);
pic32 = image->getMipMapPixels(0);
for (i = 0; i < c; i++)
{
p = pic8[i];
pic32[0] = palette[p * 3];
pic32[1] = palette[p * 3 + 1];
pic32[2] = palette[p * 3 + 2];
pic32[3] = 255;
pic32 += 4;
}
free (pic8);
free (palette);
return image;
}
static RGBAImagePtr LoadJPGBuff_(const void *src_buffer, int src_size)
{
struct jpeg_decompress_struct cinfo;
struct my_jpeg_error_mgr jerr;
cinfo.err = jpeg_std_error (&jerr.pub);
jerr.pub.error_exit = my_jpeg_error_exit;
if (setjmp (jerr.setjmp_buffer)) //< TODO: use c++ exceptions instead of setjmp/longjmp to handle errors
{
rError() << "WARNING: JPEG library error: " << errormsg << "\n";
jpeg_destroy_decompress (&cinfo);
return RGBAImagePtr();
}
jpeg_create_decompress (&cinfo);
jpeg_buffer_src (&cinfo, const_cast<void*>(src_buffer), src_size);
jpeg_read_header (&cinfo, TRUE);
jpeg_start_decompress (&cinfo);
int row_stride = cinfo.output_width * cinfo.output_components;
RGBAImagePtr image (new RGBAImage(cinfo.output_width, cinfo.output_height));
JSAMPARRAY buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
while (cinfo.output_scanline < cinfo.output_height)
{
jpeg_read_scanlines (&cinfo, buffer, 1);
if (cinfo.out_color_components == 4)
j_putRGBAScanline (buffer[0], cinfo.output_width, image->getMipMapPixels(0), cinfo.output_scanline-1);
else if (cinfo.out_color_components == 3)
j_putRGBScanline (buffer[0], cinfo.output_width, image->getMipMapPixels(0), cinfo.output_scanline-1);
else if (cinfo.out_color_components == 1)
j_putGrayScanlineToRGB (buffer[0], cinfo.output_width, image->getMipMapPixels(0), cinfo.output_scanline-1);
}
jpeg_finish_decompress (&cinfo);
jpeg_destroy_decompress (&cinfo);
return image;
}
