diff options
Diffstat (limited to 'source/Irrlicht/CImageLoaderPSD.cpp')
| -rw-r--r-- | source/Irrlicht/CImageLoaderPSD.cpp | 375 |
1 files changed, 0 insertions, 375 deletions
diff --git a/source/Irrlicht/CImageLoaderPSD.cpp b/source/Irrlicht/CImageLoaderPSD.cpp deleted file mode 100644 index 3eb5c3b..0000000 --- a/source/Irrlicht/CImageLoaderPSD.cpp +++ /dev/null @@ -1,375 +0,0 @@ -// Copyright (C) 2002-2012 Nikolaus Gebhardt
-// This file is part of the "Irrlicht Engine".
-// For conditions of distribution and use, see copyright notice in irrlicht.h
-
-#include "CImageLoaderPSD.h"
-
-#ifdef _IRR_COMPILE_WITH_PSD_LOADER_
-
-#include "IReadFile.h"
-#include "os.h"
-#include "CImage.h"
-#include "irrString.h"
-
-
-namespace irr
-{
-namespace video
-{
-
-
-//! constructor
-CImageLoaderPSD::CImageLoaderPSD()
-{
- #ifdef _DEBUG
- setDebugName("CImageLoaderPSD");
- #endif
-}
-
-
-//! returns true if the file maybe is able to be loaded by this class
-//! based on the file extension (e.g. ".tga")
-bool CImageLoaderPSD::isALoadableFileExtension(const io::path& filename) const
-{
- return core::hasFileExtension ( filename, "psd" );
-}
-
-
-
-//! returns true if the file maybe is able to be loaded by this class
-bool CImageLoaderPSD::isALoadableFileFormat(io::IReadFile* file) const
-{
- if (!file)
- return false;
-
- u8 type[3];
- file->read(&type, sizeof(u8)*3);
- return (type[2]==2); // we currently only handle tgas of type 2.
-}
-
-
-
-//! creates a surface from the file
-IImage* CImageLoaderPSD::loadImage(io::IReadFile* file) const
-{
- u32* imageData = 0;
-
- PsdHeader header;
- file->read(&header, sizeof(PsdHeader));
-
-#ifndef __BIG_ENDIAN__
- header.version = os::Byteswap::byteswap(header.version);
- header.channels = os::Byteswap::byteswap(header.channels);
- header.height = os::Byteswap::byteswap(header.height);
- header.width = os::Byteswap::byteswap(header.width);
- header.depth = os::Byteswap::byteswap(header.depth);
- header.mode = os::Byteswap::byteswap(header.mode);
-#endif
-
- if (header.signature[0] != '8' ||
- header.signature[1] != 'B' ||
- header.signature[2] != 'P' ||
- header.signature[3] != 'S')
- return 0;
-
- if (header.version != 1)
- {
- os::Printer::log("Unsupported PSD file version", file->getFileName(), ELL_ERROR);
- return 0;
- }
-
- if (header.mode != 3 || header.depth != 8)
- {
- os::Printer::log("Unsupported PSD color mode or depth.\n", file->getFileName(), ELL_ERROR);
- return 0;
- }
-
- // skip color mode data
-
- u32 l;
- file->read(&l, sizeof(u32));
-#ifndef __BIG_ENDIAN__
- l = os::Byteswap::byteswap(l);
-#endif
- if (!file->seek(l, true))
- {
- os::Printer::log("Error seeking file pos to image resources.\n", file->getFileName(), ELL_ERROR);
- return 0;
- }
-
- // skip image resources
-
- file->read(&l, sizeof(u32));
-#ifndef __BIG_ENDIAN__
- l = os::Byteswap::byteswap(l);
-#endif
- if (!file->seek(l, true))
- {
- os::Printer::log("Error seeking file pos to layer and mask.\n", file->getFileName(), ELL_ERROR);
- return 0;
- }
-
- // skip layer & mask
-
- file->read(&l, sizeof(u32));
-#ifndef __BIG_ENDIAN__
- l = os::Byteswap::byteswap(l);
-#endif
- if (!file->seek(l, true))
- {
- os::Printer::log("Error seeking file pos to image data section.\n", file->getFileName(), ELL_ERROR);
- return 0;
- }
-
- // read image data
-
- u16 compressionType;
- file->read(&compressionType, sizeof(u16));
-#ifndef __BIG_ENDIAN__
- compressionType = os::Byteswap::byteswap(compressionType);
-#endif
-
- if (compressionType != 1 && compressionType != 0)
- {
- os::Printer::log("Unsupported psd compression mode.\n", file->getFileName(), ELL_ERROR);
- return 0;
- }
-
- // create image data block
-
- imageData = new u32[header.width * header.height];
-
- bool res = false;
-
- if (compressionType == 0)
- res = readRawImageData(file, header, imageData); // RAW image data
- else
- res = readRLEImageData(file, header, imageData); // RLE compressed data
-
- video::IImage* image = 0;
-
- if (res)
- {
- // create surface
- image = new CImage(ECF_A8R8G8B8,
- core::dimension2d<u32>(header.width, header.height), imageData);
- }
-
- if (!image)
- delete [] imageData;
- imageData = 0;
-
- return image;
-}
-
-
-bool CImageLoaderPSD::readRawImageData(io::IReadFile* file, const PsdHeader& header, u32* imageData) const
-{
- u8* tmpData = new u8[header.width * header.height];
-
- for (s32 channel=0; channel<header.channels && channel < 3; ++channel)
- {
- if (!file->read(tmpData, sizeof(c8) * header.width * header.height))
- {
- os::Printer::log("Error reading color channel\n", file->getFileName(), ELL_ERROR);
- break;
- }
-
- s16 shift = getShiftFromChannel((c8)channel, header);
- if (shift != -1)
- {
- u32 mask = 0xff << shift;
-
- for (u32 x=0; x<header.width; ++x)
- {
- for (u32 y=0; y<header.height; ++y)
- {
- s32 index = x + y*header.width;
- imageData[index] = ~(~imageData[index] | mask);
- imageData[index] |= tmpData[index] << shift;
- }
- }
- }
-
- }
-
- delete [] tmpData;
- return true;
-}
-
-
-bool CImageLoaderPSD::readRLEImageData(io::IReadFile* file, const PsdHeader& header, u32* imageData) const
-{
- /* If the compression code is 1, the image data
- starts with the byte counts for all the scan lines in the channel
- (LayerBottom LayerTop), with each count stored as a two
- byte value. The RLE compressed data follows, with each scan line
- compressed separately. The RLE compression is the same compres-sion
- algorithm used by the Macintosh ROM routine PackBits, and
- the TIFF standard.
- If the Layer's Size, and therefore the data, is odd, a pad byte will
- be inserted at the end of the row.
- */
-
- /*
- A pseudo code fragment to unpack might look like this:
-
- Loop until you get the number of unpacked bytes you are expecting:
- Read the next source byte into n.
- If n is between 0 and 127 inclusive, copy the next n+1 bytes literally.
- Else if n is between -127 and -1 inclusive, copy the next byte -n+1
- times.
- Else if n is -128, noop.
- Endloop
-
- In the inverse routine, it is best to encode a 2-byte repeat run as a replicate run
- except when preceded and followed by a literal run. In that case, it is best to merge
- the three runs into one literal run. Always encode 3-byte repeats as replicate runs.
- That is the essence of the algorithm. Here are some additional rules:
- - Pack each row separately. Do not compress across row boundaries.
- - The number of uncompressed bytes per row is defined to be (ImageWidth + 7)
- / 8. If the uncompressed bitmap is required to have an even number of bytes per
- row, decompress into word-aligned buffers.
- - If a run is larger than 128 bytes, encode the remainder of the run as one or more
- additional replicate runs.
- When PackBits data is decompressed, the result should be interpreted as per com-pression
- type 1 (no compression).
- */
-
- u8* tmpData = new u8[header.width * header.height];
- u16 *rleCount= new u16 [header.height * header.channels];
-
- s32 size=0;
-
- for (u32 y=0; y<header.height * header.channels; ++y)
- {
- if (!file->read(&rleCount[y], sizeof(u16)))
- {
- delete [] tmpData;
- delete [] rleCount;
- os::Printer::log("Error reading rle rows\n", file->getFileName(), ELL_ERROR);
- return false;
- }
-
-#ifndef __BIG_ENDIAN__
- rleCount[y] = os::Byteswap::byteswap(rleCount[y]);
-#endif
- size += rleCount[y];
- }
-
- s8 *buf = new s8[size];
- if (!file->read(buf, size))
- {
- delete [] rleCount;
- delete [] buf;
- delete [] tmpData;
- os::Printer::log("Error reading rle rows\n", file->getFileName(), ELL_ERROR);
- return false;
- }
-
- u16 *rcount=rleCount;
-
- s8 rh;
- u16 bytesRead;
- u8 *dest;
- s8 *pBuf = buf;
-
- // decompress packbit rle
-
- for (s32 channel=0; channel<header.channels; channel++)
- {
- for (u32 y=0; y<header.height; ++y, ++rcount)
- {
- bytesRead=0;
- dest = &tmpData[y*header.width];
-
- while (bytesRead < *rcount)
- {
- rh = *pBuf++;
- ++bytesRead;
-
- if (rh >= 0)
- {
- ++rh;
-
- while (rh--)
- {
- *dest = *pBuf++;
- ++bytesRead;
- ++dest;
- }
- }
- else
- if (rh > -128)
- {
- rh = -rh +1;
-
- while (rh--)
- {
- *dest = *pBuf;
- ++dest;
- }
-
- ++pBuf;
- ++bytesRead;
- }
- }
- }
-
- s16 shift = getShiftFromChannel((c8)channel, header);
-
- if (shift != -1)
- {
- u32 mask = 0xff << shift;
-
- for (u32 x=0; x<header.width; ++x)
- for (u32 y=0; y<header.height; ++y)
- {
- s32 index = x + y*header.width;
- imageData[index] = ~(~imageData[index] | mask);
- imageData[index] |= tmpData[index] << shift;
- }
- }
- }
-
- delete [] rleCount;
- delete [] buf;
- delete [] tmpData;
-
- return true;
-}
-
-
-s16 CImageLoaderPSD::getShiftFromChannel(c8 channelNr, const PsdHeader& header) const
-{
- switch(channelNr)
- {
- case 0:
- return 16; // red
- case 1:
- return 8; // green
- case 2:
- return 0; // blue
- case 3:
- return header.channels == 4 ? 24 : -1; // ?
- case 4:
- return 24; // alpha
- default:
- return -1;
- }
-}
-
-
-
-//! creates a loader which is able to load tgas
-IImageLoader* createImageLoaderPSD()
-{
- return new CImageLoaderPSD();
-}
-
-
-} // end namespace video
-} // end namespace irr
-
-#endif
-
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