mirror of
https://github.com/ZDoom/qzdoom-gpl.git
synced 2024-12-14 22:21:32 +00:00
533 lines
14 KiB
C++
533 lines
14 KiB
C++
/*
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** jpegtexture.cpp
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** Texture class for JPEG images
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**
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**---------------------------------------------------------------------------
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** Copyright 2006-2007 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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**
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*/
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#include "doomtype.h"
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#include "files.h"
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#include "r_data.h"
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#include "r_jpeg.h"
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#include "w_wad.h"
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#include "v_text.h"
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#include "bitmap.h"
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void FLumpSourceMgr::InitSource (j_decompress_ptr cinfo)
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{
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((FLumpSourceMgr *)(cinfo->src))->StartOfFile = true;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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boolean FLumpSourceMgr::FillInputBuffer (j_decompress_ptr cinfo)
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{
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FLumpSourceMgr *me = (FLumpSourceMgr *)(cinfo->src);
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long nbytes = me->Lump->Read (me->Buffer, sizeof(me->Buffer));
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if (nbytes <= 0)
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{
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me->Buffer[0] = (JOCTET)0xFF;
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me->Buffer[1] = (JOCTET)JPEG_EOI;
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nbytes = 2;
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}
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me->next_input_byte = me->Buffer;
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me->bytes_in_buffer = nbytes;
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me->StartOfFile = false;
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return TRUE;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void FLumpSourceMgr::SkipInputData (j_decompress_ptr cinfo, long num_bytes)
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{
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FLumpSourceMgr *me = (FLumpSourceMgr *)(cinfo->src);
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if (num_bytes <= (long)me->bytes_in_buffer)
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{
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me->bytes_in_buffer -= num_bytes;
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me->next_input_byte += num_bytes;
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}
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else
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{
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num_bytes -= (long)me->bytes_in_buffer;
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me->Lump->Seek (num_bytes, SEEK_CUR);
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FillInputBuffer (cinfo);
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}
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void FLumpSourceMgr::TermSource (j_decompress_ptr cinfo)
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{
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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FLumpSourceMgr::FLumpSourceMgr (FileReader *lump, j_decompress_ptr cinfo)
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: Lump (lump)
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{
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cinfo->src = this;
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init_source = InitSource;
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fill_input_buffer = FillInputBuffer;
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skip_input_data = SkipInputData;
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resync_to_restart = jpeg_resync_to_restart;
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term_source = TermSource;
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bytes_in_buffer = 0;
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next_input_byte = NULL;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void JPEG_ErrorExit (j_common_ptr cinfo)
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{
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(*cinfo->err->output_message) (cinfo);
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throw -1;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void JPEG_OutputMessage (j_common_ptr cinfo)
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{
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char buffer[JMSG_LENGTH_MAX];
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(*cinfo->err->format_message) (cinfo, buffer);
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Printf (TEXTCOLOR_ORANGE "JPEG failure: %s\n", buffer);
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}
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//==========================================================================
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//
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// A JPEG texture
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//
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//==========================================================================
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class FJPEGTexture : public FTexture
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{
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public:
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FJPEGTexture (int lumpnum, int width, int height);
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~FJPEGTexture ();
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const BYTE *GetColumn (unsigned int column, const Span **spans_out);
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const BYTE *GetPixels ();
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void Unload ();
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FTextureFormat GetFormat ();
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int CopyTrueColorPixels(FBitmap *bmp, int x, int y, int w, int h, int rotate, FCopyInfo *inf = NULL);
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bool UseBasePalette();
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protected:
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BYTE *Pixels;
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Span DummySpans[2];
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void MakeTexture ();
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friend class FTexture;
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};
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//==========================================================================
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//
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//
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//
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//==========================================================================
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FTexture *JPEGTexture_TryCreate(FileReader & data, int lumpnum)
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{
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union
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{
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DWORD dw;
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WORD w[2];
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BYTE b[4];
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} first4bytes;
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data.Seek(0, SEEK_SET);
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if (data.Read(&first4bytes, 4) < 4) return NULL;
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if (first4bytes.b[0] != 0xFF || first4bytes.b[1] != 0xD8 || first4bytes.b[2] != 0xFF)
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return NULL;
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// Find the SOFn marker to extract the image dimensions,
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// where n is 0, 1, or 2 (other types are unsupported).
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while ((unsigned)first4bytes.b[3] - 0xC0 >= 3)
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{
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if (data.Read (first4bytes.w, 2) != 2)
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{
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return NULL;
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}
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data.Seek (BigShort(first4bytes.w[0]) - 2, SEEK_CUR);
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if (data.Read (first4bytes.b + 2, 2) != 2 || first4bytes.b[2] != 0xFF)
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{
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return NULL;
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}
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}
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if (data.Read (first4bytes.b, 3) != 3)
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{
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return NULL;
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}
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if (BigShort (first4bytes.w[0]) < 5)
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{
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return NULL;
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}
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if (data.Read (first4bytes.b, 4) != 4)
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{
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return NULL;
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}
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return new FJPEGTexture (lumpnum, BigShort(first4bytes.w[1]), BigShort(first4bytes.w[0]));
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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FJPEGTexture::FJPEGTexture (int lumpnum, int width, int height)
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: FTexture(NULL, lumpnum), Pixels(0)
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{
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UseType = TEX_MiscPatch;
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LeftOffset = 0;
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TopOffset = 0;
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bMasked = false;
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Width = width;
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Height = height;
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CalcBitSize ();
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DummySpans[0].TopOffset = 0;
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DummySpans[0].Length = Height;
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DummySpans[1].TopOffset = 0;
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DummySpans[1].Length = 0;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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FJPEGTexture::~FJPEGTexture ()
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{
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Unload ();
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void FJPEGTexture::Unload ()
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{
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if (Pixels != NULL)
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{
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delete[] Pixels;
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Pixels = NULL;
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}
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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FTextureFormat FJPEGTexture::GetFormat()
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{
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return TEX_RGB;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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const BYTE *FJPEGTexture::GetColumn (unsigned int column, const Span **spans_out)
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{
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if (Pixels == NULL)
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{
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MakeTexture ();
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}
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if ((unsigned)column >= (unsigned)Width)
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{
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if (WidthMask + 1 == Width)
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{
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column &= WidthMask;
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}
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else
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{
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column %= Width;
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}
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}
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if (spans_out != NULL)
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{
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*spans_out = DummySpans;
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}
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return Pixels + column*Height;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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const BYTE *FJPEGTexture::GetPixels ()
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{
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if (Pixels == NULL)
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{
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MakeTexture ();
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}
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return Pixels;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void FJPEGTexture::MakeTexture ()
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{
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FWadLump lump = Wads.OpenLumpNum (SourceLump);
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JSAMPLE *buff = NULL;
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jpeg_decompress_struct cinfo;
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jpeg_error_mgr jerr;
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Pixels = new BYTE[Width * Height];
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memset (Pixels, 0xBA, Width * Height);
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cinfo.err = jpeg_std_error(&jerr);
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cinfo.err->output_message = JPEG_OutputMessage;
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cinfo.err->error_exit = JPEG_ErrorExit;
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jpeg_create_decompress(&cinfo);
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try
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{
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FLumpSourceMgr sourcemgr(&lump, &cinfo);
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jpeg_read_header(&cinfo, TRUE);
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if (!((cinfo.out_color_space == JCS_RGB && cinfo.num_components == 3) ||
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(cinfo.out_color_space == JCS_CMYK && cinfo.num_components == 4) ||
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(cinfo.out_color_space == JCS_GRAYSCALE && cinfo.num_components == 1)))
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{
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Printf (TEXTCOLOR_ORANGE "Unsupported color format\n");
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throw -1;
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}
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jpeg_start_decompress(&cinfo);
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int y = 0;
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buff = new BYTE[cinfo.output_width * cinfo.output_components];
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while (cinfo.output_scanline < cinfo.output_height)
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{
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int num_scanlines = jpeg_read_scanlines(&cinfo, &buff, 1);
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BYTE *in = buff;
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BYTE *out = Pixels + y;
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switch (cinfo.out_color_space)
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{
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case JCS_RGB:
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for (int x = Width; x > 0; --x)
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{
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*out = RGB32k[in[0]>>3][in[1]>>3][in[2]>>3];
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out += Height;
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in += 3;
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}
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break;
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case JCS_GRAYSCALE:
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for (int x = Width; x > 0; --x)
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{
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*out = GrayMap[in[0]];
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out += Height;
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in += 1;
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}
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break;
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case JCS_CMYK:
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// What are you doing using a CMYK image? :)
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for (int x = Width; x > 0; --x)
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{
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// To be precise, these calculations should use 255, but
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// 256 is much faster and virtually indistinguishable.
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int r = in[3] - (((256-in[0])*in[3]) >> 8);
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int g = in[3] - (((256-in[1])*in[3]) >> 8);
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int b = in[3] - (((256-in[2])*in[3]) >> 8);
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*out = RGB32k[r >> 3][g >> 3][b >> 3];
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out += Height;
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in += 4;
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}
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break;
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default:
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// The other colorspaces were considered above and discarded,
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// but GCC will complain without a default for them here.
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break;
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}
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y++;
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}
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jpeg_finish_decompress(&cinfo);
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jpeg_destroy_decompress(&cinfo);
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}
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catch (int)
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{
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Printf (TEXTCOLOR_ORANGE " in texture %s\n", Name);
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jpeg_destroy_decompress(&cinfo);
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}
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if (buff != NULL)
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{
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delete[] buff;
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}
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}
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//===========================================================================
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//
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// FJPEGTexture::CopyTrueColorPixels
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//
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// Preserves the full color information (unlike software mode)
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//
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//===========================================================================
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int FJPEGTexture::CopyTrueColorPixels(FBitmap *bmp, int x, int y, int w, int h, int rotate, FCopyInfo *inf)
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{
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PalEntry pe[256];
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FWadLump lump = Wads.OpenLumpNum (SourceLump);
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JSAMPLE *buff = NULL;
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jpeg_decompress_struct cinfo;
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jpeg_error_mgr jerr;
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cinfo.err = jpeg_std_error(&jerr);
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cinfo.err->output_message = JPEG_OutputMessage;
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cinfo.err->error_exit = JPEG_ErrorExit;
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jpeg_create_decompress(&cinfo);
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if (w < 0 || w > Width) w = Width;
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if (h < 0 || h > Height) h = Height;
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try
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{
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FLumpSourceMgr sourcemgr(&lump, &cinfo);
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jpeg_read_header(&cinfo, TRUE);
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if (!((cinfo.out_color_space == JCS_RGB && cinfo.num_components == 3) ||
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(cinfo.out_color_space == JCS_CMYK && cinfo.num_components == 4) ||
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(cinfo.out_color_space == JCS_GRAYSCALE && cinfo.num_components == 1)))
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{
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Printf (TEXTCOLOR_ORANGE "Unsupported color format\n");
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throw -1;
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}
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jpeg_start_decompress(&cinfo);
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int yc = 0;
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buff = new BYTE[cinfo.output_height * cinfo.output_width * cinfo.output_components];
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while (cinfo.output_scanline < cinfo.output_height)
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{
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BYTE * ptr = buff + cinfo.output_width * cinfo.output_components * yc;
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jpeg_read_scanlines(&cinfo, &ptr, 1);
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yc++;
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}
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switch (cinfo.out_color_space)
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{
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case JCS_RGB:
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bmp->CopyPixelDataRGB(x, y, buff, w, h,
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3, cinfo.output_width * cinfo.output_components, rotate, CF_RGB, inf);
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break;
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case JCS_GRAYSCALE:
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for(int i=0;i<256;i++) pe[i]=PalEntry(255,i,i,i); // default to a gray map
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bmp->CopyPixelData(x, y, buff, w, h,
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1, cinfo.output_width, rotate, pe, inf);
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break;
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case JCS_CMYK:
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bmp->CopyPixelDataRGB(x, y, buff, w, h,
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4, cinfo.output_width * cinfo.output_components, rotate, CF_CMYK, inf);
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break;
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default:
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assert(0);
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break;
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}
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jpeg_finish_decompress(&cinfo);
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}
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catch(int)
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{
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Printf (TEXTCOLOR_ORANGE " in JPEG texture %s\n", Name);
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}
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jpeg_destroy_decompress(&cinfo);
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if (buff != NULL) delete [] buff;
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return 0;
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}
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//===========================================================================
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//
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//
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//===========================================================================
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bool FJPEGTexture::UseBasePalette()
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{
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return false;
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}
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