diff options
Diffstat (limited to 'third_party/tiff_v403/tif_getimage.c')
| -rw-r--r-- | third_party/tiff_v403/tif_getimage.c | 2989 |
1 files changed, 2989 insertions, 0 deletions
diff --git a/third_party/tiff_v403/tif_getimage.c b/third_party/tiff_v403/tif_getimage.c new file mode 100644 index 0000000000..35c4786018 --- /dev/null +++ b/third_party/tiff_v403/tif_getimage.c @@ -0,0 +1,2989 @@ +/* $Id: tif_getimage.c,v 1.82 2012-06-06 00:17:49 fwarmerdam Exp $ */ + +/* + * Copyright (c) 1991-1997 Sam Leffler + * Copyright (c) 1991-1997 Silicon Graphics, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software and + * its documentation for any purpose is hereby granted without fee, provided + * that (i) the above copyright notices and this permission notice appear in + * all copies of the software and related documentation, and (ii) the names of + * Sam Leffler and Silicon Graphics may not be used in any advertising or + * publicity relating to the software without the specific, prior written + * permission of Sam Leffler and Silicon Graphics. + * + * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, + * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY + * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. + * + * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR + * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, + * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF + * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +/* + * TIFF Library + * + * Read and return a packed RGBA image. + */ +#include "tiffiop.h" +#include <stdio.h> + +static int gtTileContig(TIFFRGBAImage*, uint32*, uint32, uint32); +static int gtTileSeparate(TIFFRGBAImage*, uint32*, uint32, uint32); +static int gtStripContig(TIFFRGBAImage*, uint32*, uint32, uint32); +static int gtStripSeparate(TIFFRGBAImage*, uint32*, uint32, uint32); +static int PickContigCase(TIFFRGBAImage*); +static int PickSeparateCase(TIFFRGBAImage*); + +static int BuildMapUaToAa(TIFFRGBAImage* img); +static int BuildMapBitdepth16To8(TIFFRGBAImage* img); + +static const char photoTag[] = "PhotometricInterpretation"; + +/* + * Helper constants used in Orientation tag handling + */ +#define FLIP_VERTICALLY 0x01 +#define FLIP_HORIZONTALLY 0x02 + +/* + * Color conversion constants. We will define display types here. + */ + +static const TIFFDisplay display_sRGB = { + { /* XYZ -> luminance matrix */ + { 3.2410F, -1.5374F, -0.4986F }, + { -0.9692F, 1.8760F, 0.0416F }, + { 0.0556F, -0.2040F, 1.0570F } + }, + 100.0F, 100.0F, 100.0F, /* Light o/p for reference white */ + 255, 255, 255, /* Pixel values for ref. white */ + 1.0F, 1.0F, 1.0F, /* Residual light o/p for black pixel */ + 2.4F, 2.4F, 2.4F, /* Gamma values for the three guns */ +}; + +/* + * Check the image to see if TIFFReadRGBAImage can deal with it. + * 1/0 is returned according to whether or not the image can + * be handled. If 0 is returned, emsg contains the reason + * why it is being rejected. + */ +int +TIFFRGBAImageOK(TIFF* tif, char emsg[1024]) +{ + TIFFDirectory* td = &tif->tif_dir; + uint16 photometric; + int colorchannels; + + if (!tif->tif_decodestatus) { + sprintf(emsg, "Sorry, requested compression method is not configured"); + return (0); + } + switch (td->td_bitspersample) { + case 1: + case 2: + case 4: + case 8: + case 16: + break; + default: + sprintf(emsg, "Sorry, can not handle images with %d-bit samples", + td->td_bitspersample); + return (0); + } + colorchannels = td->td_samplesperpixel - td->td_extrasamples; + if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric)) { + switch (colorchannels) { + case 1: + photometric = PHOTOMETRIC_MINISBLACK; + break; + case 3: + photometric = PHOTOMETRIC_RGB; + break; + default: + sprintf(emsg, "Missing needed %s tag", photoTag); + return (0); + } + } + switch (photometric) { + case PHOTOMETRIC_MINISWHITE: + case PHOTOMETRIC_MINISBLACK: + case PHOTOMETRIC_PALETTE: + if (td->td_planarconfig == PLANARCONFIG_CONTIG + && td->td_samplesperpixel != 1 + && td->td_bitspersample < 8 ) { + sprintf(emsg, + "Sorry, can not handle contiguous data with %s=%d, " + "and %s=%d and Bits/Sample=%d", + photoTag, photometric, + "Samples/pixel", td->td_samplesperpixel, + td->td_bitspersample); + return (0); + } + /* + * We should likely validate that any extra samples are either + * to be ignored, or are alpha, and if alpha we should try to use + * them. But for now we won't bother with this. + */ + break; + case PHOTOMETRIC_YCBCR: + /* + * TODO: if at all meaningful and useful, make more complete + * support check here, or better still, refactor to let supporting + * code decide whether there is support and what meaningfull + * error to return + */ + break; + case PHOTOMETRIC_RGB: + if (colorchannels < 3) { + sprintf(emsg, "Sorry, can not handle RGB image with %s=%d", + "Color channels", colorchannels); + return (0); + } + break; + case PHOTOMETRIC_SEPARATED: + { + uint16 inkset; + TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset); + if (inkset != INKSET_CMYK) { + sprintf(emsg, + "Sorry, can not handle separated image with %s=%d", + "InkSet", inkset); + return 0; + } + if (td->td_samplesperpixel < 4) { + sprintf(emsg, + "Sorry, can not handle separated image with %s=%d", + "Samples/pixel", td->td_samplesperpixel); + return 0; + } + break; + } + case PHOTOMETRIC_LOGL: + if (td->td_compression != COMPRESSION_SGILOG) { + sprintf(emsg, "Sorry, LogL data must have %s=%d", + "Compression", COMPRESSION_SGILOG); + return (0); + } + break; + case PHOTOMETRIC_LOGLUV: + if (td->td_compression != COMPRESSION_SGILOG && + td->td_compression != COMPRESSION_SGILOG24) { + sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d", + "Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24); + return (0); + } + if (td->td_planarconfig != PLANARCONFIG_CONTIG) { + sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d", + "Planarconfiguration", td->td_planarconfig); + return (0); + } + break; + case PHOTOMETRIC_CIELAB: + break; + default: + sprintf(emsg, "Sorry, can not handle image with %s=%d", + photoTag, photometric); + return (0); + } + return (1); +} + +void +TIFFRGBAImageEnd(TIFFRGBAImage* img) +{ + if (img->Map) + _TIFFfree(img->Map), img->Map = NULL; + if (img->BWmap) + _TIFFfree(img->BWmap), img->BWmap = NULL; + if (img->PALmap) + _TIFFfree(img->PALmap), img->PALmap = NULL; + if (img->ycbcr) + _TIFFfree(img->ycbcr), img->ycbcr = NULL; + if (img->cielab) + _TIFFfree(img->cielab), img->cielab = NULL; + if (img->UaToAa) + _TIFFfree(img->UaToAa), img->UaToAa = NULL; + if (img->Bitdepth16To8) + _TIFFfree(img->Bitdepth16To8), img->Bitdepth16To8 = NULL; + + if( img->redcmap ) { + _TIFFfree( img->redcmap ); + _TIFFfree( img->greencmap ); + _TIFFfree( img->bluecmap ); + img->redcmap = img->greencmap = img->bluecmap = NULL; + } +} + +static int +isCCITTCompression(TIFF* tif) +{ + uint16 compress; + TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress); + return (compress == COMPRESSION_CCITTFAX3 || + compress == COMPRESSION_CCITTFAX4 || + compress == COMPRESSION_CCITTRLE || + compress == COMPRESSION_CCITTRLEW); +} + +int +TIFFRGBAImageBegin(TIFFRGBAImage* img, TIFF* tif, int stop, char emsg[1024]) +{ + uint16* sampleinfo; + uint16 extrasamples; + uint16 planarconfig; + uint16 compress; + int colorchannels; + uint16 *red_orig, *green_orig, *blue_orig; + int n_color; + + /* Initialize to normal values */ + img->row_offset = 0; + img->col_offset = 0; + img->redcmap = NULL; + img->greencmap = NULL; + img->bluecmap = NULL; + img->req_orientation = ORIENTATION_BOTLEFT; /* It is the default */ + + img->tif = tif; + img->stoponerr = stop; + TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample); + switch (img->bitspersample) { + case 1: + case 2: + case 4: + case 8: + case 16: + break; + default: + sprintf(emsg, "Sorry, can not handle images with %d-bit samples", + img->bitspersample); + goto fail_return; + } + img->alpha = 0; + TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &img->samplesperpixel); + TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES, + &extrasamples, &sampleinfo); + if (extrasamples >= 1) + { + switch (sampleinfo[0]) { + case EXTRASAMPLE_UNSPECIFIED: /* Workaround for some images without */ + if (img->samplesperpixel > 3) /* correct info about alpha channel */ + img->alpha = EXTRASAMPLE_ASSOCALPHA; + break; + case EXTRASAMPLE_ASSOCALPHA: /* data is pre-multiplied */ + case EXTRASAMPLE_UNASSALPHA: /* data is not pre-multiplied */ + img->alpha = sampleinfo[0]; + break; + } + } + +#ifdef DEFAULT_EXTRASAMPLE_AS_ALPHA + if( !TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) + img->photometric = PHOTOMETRIC_MINISWHITE; + + if( extrasamples == 0 + && img->samplesperpixel == 4 + && img->photometric == PHOTOMETRIC_RGB ) + { + img->alpha = EXTRASAMPLE_ASSOCALPHA; + extrasamples = 1; + } +#endif + + colorchannels = img->samplesperpixel - extrasamples; + TIFFGetFieldDefaulted(tif, TIFFTAG_COMPRESSION, &compress); + TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &planarconfig); + if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) { + switch (colorchannels) { + case 1: + if (isCCITTCompression(tif)) + img->photometric = PHOTOMETRIC_MINISWHITE; + else + img->photometric = PHOTOMETRIC_MINISBLACK; + break; + case 3: + img->photometric = PHOTOMETRIC_RGB; + break; + default: + sprintf(emsg, "Missing needed %s tag", photoTag); + goto fail_return; + } + } + switch (img->photometric) { + case PHOTOMETRIC_PALETTE: + if (!TIFFGetField(tif, TIFFTAG_COLORMAP, + &red_orig, &green_orig, &blue_orig)) { + sprintf(emsg, "Missing required \"Colormap\" tag"); + goto fail_return; + } + + /* copy the colormaps so we can modify them */ + n_color = (1L << img->bitspersample); + img->redcmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color); + img->greencmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color); + img->bluecmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color); + if( !img->redcmap || !img->greencmap || !img->bluecmap ) { + sprintf(emsg, "Out of memory for colormap copy"); + goto fail_return; + } + + _TIFFmemcpy( img->redcmap, red_orig, n_color * 2 ); + _TIFFmemcpy( img->greencmap, green_orig, n_color * 2 ); + _TIFFmemcpy( img->bluecmap, blue_orig, n_color * 2 ); + + /* fall thru... */ + case PHOTOMETRIC_MINISWHITE: + case PHOTOMETRIC_MINISBLACK: + if (planarconfig == PLANARCONFIG_CONTIG + && img->samplesperpixel != 1 + && img->bitspersample < 8 ) { + sprintf(emsg, + "Sorry, can not handle contiguous data with %s=%d, " + "and %s=%d and Bits/Sample=%d", + photoTag, img->photometric, + "Samples/pixel", img->samplesperpixel, + img->bitspersample); + goto fail_return; + } + break; + case PHOTOMETRIC_YCBCR: + /* It would probably be nice to have a reality check here. */ + if (planarconfig == PLANARCONFIG_CONTIG) + /* can rely on libjpeg to convert to RGB */ + /* XXX should restore current state on exit */ + switch (compress) { + case COMPRESSION_JPEG: + /* + * TODO: when complete tests verify complete desubsampling + * and YCbCr handling, remove use of TIFFTAG_JPEGCOLORMODE in + * favor of tif_getimage.c native handling + */ + TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB); + img->photometric = PHOTOMETRIC_RGB; + break; + default: + /* do nothing */; + break; + } + /* + * TODO: if at all meaningful and useful, make more complete + * support check here, or better still, refactor to let supporting + * code decide whether there is support and what meaningfull + * error to return + */ + break; + case PHOTOMETRIC_RGB: + if (colorchannels < 3) { + sprintf(emsg, "Sorry, can not handle RGB image with %s=%d", + "Color channels", colorchannels); + goto fail_return; + } + break; + case PHOTOMETRIC_SEPARATED: + { + uint16 inkset; + TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset); + if (inkset != INKSET_CMYK) { + sprintf(emsg, "Sorry, can not handle separated image with %s=%d", + "InkSet", inkset); + goto fail_return; + } + if (img->samplesperpixel < 4) { + sprintf(emsg, "Sorry, can not handle separated image with %s=%d", + "Samples/pixel", img->samplesperpixel); + goto fail_return; + } + } + break; + case PHOTOMETRIC_LOGL: + if (compress != COMPRESSION_SGILOG) { + sprintf(emsg, "Sorry, LogL data must have %s=%d", + "Compression", COMPRESSION_SGILOG); + goto fail_return; + } + TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT); + img->photometric = PHOTOMETRIC_MINISBLACK; /* little white lie */ + img->bitspersample = 8; + break; + case PHOTOMETRIC_LOGLUV: + if (compress != COMPRESSION_SGILOG && compress != COMPRESSION_SGILOG24) { + sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d", + "Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24); + goto fail_return; + } + if (planarconfig != PLANARCONFIG_CONTIG) { + sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d", + "Planarconfiguration", planarconfig); + return (0); + } + TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT); + img->photometric = PHOTOMETRIC_RGB; /* little white lie */ + img->bitspersample = 8; + break; + case PHOTOMETRIC_CIELAB: + break; + default: + sprintf(emsg, "Sorry, can not handle image with %s=%d", + photoTag, img->photometric); + goto fail_return; + } + img->Map = NULL; + img->BWmap = NULL; + img->PALmap = NULL; + img->ycbcr = NULL; + img->cielab = NULL; + img->UaToAa = NULL; + img->Bitdepth16To8 = NULL; + TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &img->width); + TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &img->height); + TIFFGetFieldDefaulted(tif, TIFFTAG_ORIENTATION, &img->orientation); + img->isContig = + !(planarconfig == PLANARCONFIG_SEPARATE && img->samplesperpixel > 1); + if (img->isContig) { + if (!PickContigCase(img)) { + sprintf(emsg, "Sorry, can not handle image"); + goto fail_return; + } + } else { + if (!PickSeparateCase(img)) { + sprintf(emsg, "Sorry, can not handle image"); + goto fail_return; + } + } + return 1; + + fail_return: + _TIFFfree( img->redcmap ); + _TIFFfree( img->greencmap ); + _TIFFfree( img->bluecmap ); + img->redcmap = img->greencmap = img->bluecmap = NULL; + return 0; +} + +int +TIFFRGBAImageGet(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) +{ + if (img->get == NULL) { + TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No \"get\" routine setup"); + return (0); + } + if (img->put.any == NULL) { + TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), + "No \"put\" routine setupl; probably can not handle image format"); + return (0); + } + return (*img->get)(img, raster, w, h); +} + +/* + * Read the specified image into an ABGR-format rastertaking in account + * specified orientation. + */ +int +TIFFReadRGBAImageOriented(TIFF* tif, + uint32 rwidth, uint32 rheight, uint32* raster, + int orientation, int stop) +{ + char emsg[1024] = ""; + TIFFRGBAImage img; + int ok; + + if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, stop, emsg)) { + img.req_orientation = orientation; + /* XXX verify rwidth and rheight against width and height */ + ok = TIFFRGBAImageGet(&img, raster+(rheight-img.height)*rwidth, + rwidth, img.height); + TIFFRGBAImageEnd(&img); + } else { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg); + ok = 0; + } + return (ok); +} + +/* + * Read the specified image into an ABGR-format raster. Use bottom left + * origin for raster by default. + */ +int +TIFFReadRGBAImage(TIFF* tif, + uint32 rwidth, uint32 rheight, uint32* raster, int stop) +{ + return TIFFReadRGBAImageOriented(tif, rwidth, rheight, raster, + ORIENTATION_BOTLEFT, stop); +} + +static int +setorientation(TIFFRGBAImage* img) +{ + switch (img->orientation) { + case ORIENTATION_TOPLEFT: + case ORIENTATION_LEFTTOP: + if (img->req_orientation == ORIENTATION_TOPRIGHT || + img->req_orientation == ORIENTATION_RIGHTTOP) + return FLIP_HORIZONTALLY; + else if (img->req_orientation == ORIENTATION_BOTRIGHT || + img->req_orientation == ORIENTATION_RIGHTBOT) + return FLIP_HORIZONTALLY | FLIP_VERTICALLY; + else if (img->req_orientation == ORIENTATION_BOTLEFT || + img->req_orientation == ORIENTATION_LEFTBOT) + return FLIP_VERTICALLY; + else + return 0; + case ORIENTATION_TOPRIGHT: + case ORIENTATION_RIGHTTOP: + if (img->req_orientation == ORIENTATION_TOPLEFT || + img->req_orientation == ORIENTATION_LEFTTOP) + return FLIP_HORIZONTALLY; + else if (img->req_orientation == ORIENTATION_BOTRIGHT || + img->req_orientation == ORIENTATION_RIGHTBOT) + return FLIP_VERTICALLY; + else if (img->req_orientation == ORIENTATION_BOTLEFT || + img->req_orientation == ORIENTATION_LEFTBOT) + return FLIP_HORIZONTALLY | FLIP_VERTICALLY; + else + return 0; + case ORIENTATION_BOTRIGHT: + case ORIENTATION_RIGHTBOT: + if (img->req_orientation == ORIENTATION_TOPLEFT || + img->req_orientation == ORIENTATION_LEFTTOP) + return FLIP_HORIZONTALLY | FLIP_VERTICALLY; + else if (img->req_orientation == ORIENTATION_TOPRIGHT || + img->req_orientation == ORIENTATION_RIGHTTOP) + return FLIP_VERTICALLY; + else if (img->req_orientation == ORIENTATION_BOTLEFT || + img->req_orientation == ORIENTATION_LEFTBOT) + return FLIP_HORIZONTALLY; + else + return 0; + case ORIENTATION_BOTLEFT: + case ORIENTATION_LEFTBOT: + if (img->req_orientation == ORIENTATION_TOPLEFT || + img->req_orientation == ORIENTATION_LEFTTOP) + return FLIP_VERTICALLY; + else if (img->req_orientation == ORIENTATION_TOPRIGHT || + img->req_orientation == ORIENTATION_RIGHTTOP) + return FLIP_HORIZONTALLY | FLIP_VERTICALLY; + else if (img->req_orientation == ORIENTATION_BOTRIGHT || + img->req_orientation == ORIENTATION_RIGHTBOT) + return FLIP_HORIZONTALLY; + else + return 0; + default: /* NOTREACHED */ + return 0; + } +} + +/* + * Get an tile-organized image that has + * PlanarConfiguration contiguous if SamplesPerPixel > 1 + * or + * SamplesPerPixel == 1 + */ +static int +gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) +{ + TIFF* tif = img->tif; + tileContigRoutine put = img->put.contig; + uint32 col, row, y, rowstoread; + tmsize_t pos; + uint32 tw, th; + unsigned char* buf; + int32 fromskew, toskew; + uint32 nrow; + int ret = 1, flip; + + buf = (unsigned char*) _TIFFmalloc(TIFFTileSize(tif)); + if (buf == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer"); + return (0); + } + _TIFFmemset(buf, 0, TIFFTileSize(tif)); + TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); + TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); + + flip = setorientation(img); + if (flip & FLIP_VERTICALLY) { + y = h - 1; + toskew = -(int32)(tw + w); + } + else { + y = 0; + toskew = -(int32)(tw - w); + } + + for (row = 0; row < h; row += nrow) + { + rowstoread = th - (row + img->row_offset) % th; + nrow = (row + rowstoread > h ? h - row : rowstoread); + for (col = 0; col < w; col += tw) + { + if (TIFFReadTile(tif, buf, col+img->col_offset, + row+img->row_offset, 0, 0)==(tmsize_t)(-1) && img->stoponerr) + { + ret = 0; + break; + } + + pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif); + + if (col + tw > w) + { + /* + * Tile is clipped horizontally. Calculate + * visible portion and skewing factors. + */ + uint32 npix = w - col; + fromskew = tw - npix; + (*put)(img, raster+y*w+col, col, y, + npix, nrow, fromskew, toskew + fromskew, buf + pos); + } + else + { + (*put)(img, raster+y*w+col, col, y, tw, nrow, 0, toskew, buf + pos); + } + } + + y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow); + } + _TIFFfree(buf); + + if (flip & FLIP_HORIZONTALLY) { + uint32 line; + + for (line = 0; line < h; line++) { + uint32 *left = raster + (line * w); + uint32 *right = left + w - 1; + + while ( left < right ) { + uint32 temp = *left; + *left = *right; + *right = temp; + left++, right--; + } + } + } + + return (ret); +} + +/* + * Get an tile-organized image that has + * SamplesPerPixel > 1 + * PlanarConfiguration separated + * We assume that all such images are RGB. + */ +static int +gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) +{ + TIFF* tif = img->tif; + tileSeparateRoutine put = img->put.separate; + uint32 col, row, y, rowstoread; + tmsize_t pos; + uint32 tw, th; + unsigned char* buf; + unsigned char* p0; + unsigned char* p1; + unsigned char* p2; + unsigned char* pa; + tmsize_t tilesize; + tmsize_t bufsize; + int32 fromskew, toskew; + int alpha = img->alpha; + uint32 nrow; + int ret = 1, flip; + int colorchannels; + + tilesize = TIFFTileSize(tif); + bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,tilesize); + if (bufsize == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtTileSeparate"); + return (0); + } + buf = (unsigned char*) _TIFFmalloc(bufsize); + if (buf == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer"); + return (0); + } + _TIFFmemset(buf, 0, bufsize); + p0 = buf; + p1 = p0 + tilesize; + p2 = p1 + tilesize; + pa = (alpha?(p2+tilesize):NULL); + TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); + TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); + + flip = setorientation(img); + if (flip & FLIP_VERTICALLY) { + y = h - 1; + toskew = -(int32)(tw + w); + } + else { + y = 0; + toskew = -(int32)(tw - w); + } + + switch( img->photometric ) + { + case PHOTOMETRIC_MINISWHITE: + case PHOTOMETRIC_MINISBLACK: + case PHOTOMETRIC_PALETTE: + colorchannels = 1; + p2 = p1 = p0; + break; + + default: + colorchannels = 3; + break; + } + + for (row = 0; row < h; row += nrow) + { + rowstoread = th - (row + img->row_offset) % th; + nrow = (row + rowstoread > h ? h - row : rowstoread); + for (col = 0; col < w; col += tw) + { + if (TIFFReadTile(tif, p0, col+img->col_offset, + row+img->row_offset,0,0)==(tmsize_t)(-1) && img->stoponerr) + { + ret = 0; + break; + } + if (colorchannels > 1 + && TIFFReadTile(tif, p1, col+img->col_offset, + row+img->row_offset,0,1) == (tmsize_t)(-1) + && img->stoponerr) + { + ret = 0; + break; + } + if (colorchannels > 1 + && TIFFReadTile(tif, p2, col+img->col_offset, + row+img->row_offset,0,2) == (tmsize_t)(-1) + && img->stoponerr) + { + ret = 0; + break; + } + if (alpha + && TIFFReadTile(tif,pa,col+img->col_offset, + row+img->row_offset,0,colorchannels) == (tmsize_t)(-1) + && img->stoponerr) + { + ret = 0; + break; + } + + pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif); + + if (col + tw > w) + { + /* + * Tile is clipped horizontally. Calculate + * visible portion and skewing factors. + */ + uint32 npix = w - col; + fromskew = tw - npix; + (*put)(img, raster+y*w+col, col, y, + npix, nrow, fromskew, toskew + fromskew, + p0 + pos, p1 + pos, p2 + pos, (alpha?(pa+pos):NULL)); + } else { + (*put)(img, raster+y*w+col, col, y, + tw, nrow, 0, toskew, p0 + pos, p1 + pos, p2 + pos, (alpha?(pa+pos):NULL)); + } + } + + y += (flip & FLIP_VERTICALLY ?-(int32) nrow : (int32) nrow); + } + + if (flip & FLIP_HORIZONTALLY) { + uint32 line; + + for (line = 0; line < h; line++) { + uint32 *left = raster + (line * w); + uint32 *right = left + w - 1; + + while ( left < right ) { + uint32 temp = *left; + *left = *right; + *right = temp; + left++, right--; + } + } + } + + _TIFFfree(buf); + return (ret); +} + +/* + * Get a strip-organized image that has + * PlanarConfiguration contiguous if SamplesPerPixel > 1 + * or + * SamplesPerPixel == 1 + */ +static int +gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) +{ + TIFF* tif = img->tif; + tileContigRoutine put = img->put.contig; + uint32 row, y, nrow, nrowsub, rowstoread; + tmsize_t pos; + unsigned char* buf; + uint32 rowsperstrip; + uint16 subsamplinghor,subsamplingver; + uint32 imagewidth = img->width; + tmsize_t scanline; + int32 fromskew, toskew; + int ret = 1, flip; + + buf = (unsigned char*) _TIFFmalloc(TIFFStripSize(tif)); + if (buf == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer"); + return (0); + } + _TIFFmemset(buf, 0, TIFFStripSize(tif)); + + flip = setorientation(img); + if (flip & FLIP_VERTICALLY) { + y = h - 1; + toskew = -(int32)(w + w); + } else { + y = 0; + toskew = -(int32)(w - w); + } + + TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); + TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING, &subsamplinghor, &subsamplingver); + scanline = TIFFScanlineSize(tif); + fromskew = (w < imagewidth ? imagewidth - w : 0); + for (row = 0; row < h; row += nrow) + { + rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip; + nrow = (row + rowstoread > h ? h - row : rowstoread); + nrowsub = nrow; + if ((nrowsub%subsamplingver)!=0) + nrowsub+=subsamplingver-nrowsub%subsamplingver; + if (TIFFReadEncodedStrip(tif, + TIFFComputeStrip(tif,row+img->row_offset, 0), + buf, + ((row + img->row_offset)%rowsperstrip + nrowsub) * scanline)==(tmsize_t)(-1) + && img->stoponerr) + { + ret = 0; + break; + } + + pos = ((row + img->row_offset) % rowsperstrip) * scanline; + (*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, buf + pos); + y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow); + } + + if (flip & FLIP_HORIZONTALLY) { + uint32 line; + + for (line = 0; line < h; line++) { + uint32 *left = raster + (line * w); + uint32 *right = left + w - 1; + + while ( left < right ) { + uint32 temp = *left; + *left = *right; + *right = temp; + left++, right--; + } + } + } + + _TIFFfree(buf); + return (ret); +} + +/* + * Get a strip-organized image with + * SamplesPerPixel > 1 + * PlanarConfiguration separated + * We assume that all such images are RGB. + */ +static int +gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) +{ + TIFF* tif = img->tif; + tileSeparateRoutine put = img->put.separate; + unsigned char *buf; + unsigned char *p0, *p1, *p2, *pa; + uint32 row, y, nrow, rowstoread; + tmsize_t pos; + tmsize_t scanline; + uint32 rowsperstrip, offset_row; + uint32 imagewidth = img->width; + tmsize_t stripsize; + tmsize_t bufsize; + int32 fromskew, toskew; + int alpha = img->alpha; + int ret = 1, flip, colorchannels; + + stripsize = TIFFStripSize(tif); + bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,stripsize); + if (bufsize == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtStripSeparate"); + return (0); + } + p0 = buf = (unsigned char *)_TIFFmalloc(bufsize); + if (buf == 0) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer"); + return (0); + } + _TIFFmemset(buf, 0, bufsize); + p1 = p0 + stripsize; + p2 = p1 + stripsize; + pa = (alpha?(p2+stripsize):NULL); + + flip = setorientation(img); + if (flip & FLIP_VERTICALLY) { + y = h - 1; + toskew = -(int32)(w + w); + } + else { + y = 0; + toskew = -(int32)(w - w); + } + + switch( img->photometric ) + { + case PHOTOMETRIC_MINISWHITE: + case PHOTOMETRIC_MINISBLACK: + case PHOTOMETRIC_PALETTE: + colorchannels = 1; + p2 = p1 = p0; + break; + + default: + colorchannels = 3; + break; + } + + TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); + scanline = TIFFScanlineSize(tif); + fromskew = (w < imagewidth ? imagewidth - w : 0); + for (row = 0; row < h; row += nrow) + { + rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip; + nrow = (row + rowstoread > h ? h - row : rowstoread); + offset_row = row + img->row_offset; + if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0), + p0, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1) + && img->stoponerr) + { + ret = 0; + break; + } + if (colorchannels > 1 + && TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 1), + p1, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) == (tmsize_t)(-1) + && img->stoponerr) + { + ret = 0; + break; + } + if (colorchannels > 1 + && TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 2), + p2, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) == (tmsize_t)(-1) + && img->stoponerr) + { + ret = 0; + break; + } + if (alpha) + { + if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, colorchannels), + pa, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1) + && img->stoponerr) + { + ret = 0; + break; + } + } + + pos = ((row + img->row_offset) % rowsperstrip) * scanline; + (*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, p0 + pos, p1 + pos, + p2 + pos, (alpha?(pa+pos):NULL)); + y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow); + } + + if (flip & FLIP_HORIZONTALLY) { + uint32 line; + + for (line = 0; line < h; line++) { + uint32 *left = raster + (line * w); + uint32 *right = left + w - 1; + + while ( left < right ) { + uint32 temp = *left; + *left = *right; + *right = temp; + left++, right--; + } + } + } + + _TIFFfree(buf); + return (ret); +} + +/* + * The following routines move decoded data returned + * from the TIFF library into rasters filled with packed + * ABGR pixels (i.e. suitable for passing to lrecwrite.) + * + * The routines have been created according to the most + * important cases and optimized. PickContigCase and + * PickSeparateCase analyze the parameters and select + * the appropriate "get" and "put" routine to use. + */ +#define REPEAT8(op) REPEAT4(op); REPEAT4(op) +#define REPEAT4(op) REPEAT2(op); REPEAT2(op) +#define REPEAT2(op) op; op +#define CASE8(x,op) \ + switch (x) { \ + case 7: op; case 6: op; case 5: op; \ + case 4: op; case 3: op; case 2: op; \ + case 1: op; \ + } +#define CASE4(x,op) switch (x) { case 3: op; case 2: op; case 1: op; } +#define NOP + +#define UNROLL8(w, op1, op2) { \ + uint32 _x; \ + for (_x = w; _x >= 8; _x -= 8) { \ + op1; \ + REPEAT8(op2); \ + } \ + if (_x > 0) { \ + op1; \ + CASE8(_x,op2); \ + } \ +} +#define UNROLL4(w, op1, op2) { \ + uint32 _x; \ + for (_x = w; _x >= 4; _x -= 4) { \ + op1; \ + REPEAT4(op2); \ + } \ + if (_x > 0) { \ + op1; \ + CASE4(_x,op2); \ + } \ +} +#define UNROLL2(w, op1, op2) { \ + uint32 _x; \ + for (_x = w; _x >= 2; _x -= 2) { \ + op1; \ + REPEAT2(op2); \ + } \ + if (_x) { \ + op1; \ + op2; \ + } \ +} + +#define SKEW(r,g,b,skew) { r += skew; g += skew; b += skew; } +#define SKEW4(r,g,b,a,skew) { r += skew; g += skew; b += skew; a+= skew; } + +#define A1 (((uint32)0xffL)<<24) +#define PACK(r,g,b) \ + ((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|A1) +#define PACK4(r,g,b,a) \ + ((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|((uint32)(a)<<24)) +#define W2B(v) (((v)>>8)&0xff) +/* TODO: PACKW should have be made redundant in favor of Bitdepth16To8 LUT */ +#define PACKW(r,g,b) \ + ((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|A1) +#define PACKW4(r,g,b,a) \ + ((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|((uint32)W2B(a)<<24)) + +#define DECLAREContigPutFunc(name) \ +static void name(\ + TIFFRGBAImage* img, \ + uint32* cp, \ + uint32 x, uint32 y, \ + uint32 w, uint32 h, \ + int32 fromskew, int32 toskew, \ + unsigned char* pp \ +) + +/* + * 8-bit palette => colormap/RGB + */ +DECLAREContigPutFunc(put8bitcmaptile) +{ + uint32** PALmap = img->PALmap; + int samplesperpixel = img->samplesperpixel; + + (void) y; + while (h-- > 0) { + for (x = w; x-- > 0;) + { + *cp++ = PALmap[*pp][0]; + pp += samplesperpixel; + } + cp += toskew; + pp += fromskew; + } +} + +/* + * 4-bit palette => colormap/RGB + */ +DECLAREContigPutFunc(put4bitcmaptile) +{ + uint32** PALmap = img->PALmap; + + (void) x; (void) y; + fromskew /= 2; + while (h-- > 0) { + uint32* bw; + UNROLL2(w, bw = PALmap[*pp++], *cp++ = *bw++); + cp += toskew; + pp += fromskew; + } +} + +/* + * 2-bit palette => colormap/RGB + */ +DECLAREContigPutFunc(put2bitcmaptile) +{ + uint32** PALmap = img->PALmap; + + (void) x; (void) y; + fromskew /= 4; + while (h-- > 0) { + uint32* bw; + UNROLL4(w, bw = PALmap[*pp++], *cp++ = *bw++); + cp += toskew; + pp += fromskew; + } +} + +/* + * 1-bit palette => colormap/RGB + */ +DECLAREContigPutFunc(put1bitcmaptile) +{ + uint32** PALmap = img->PALmap; + + (void) x; (void) y; + fromskew /= 8; + while (h-- > 0) { + uint32* bw; + UNROLL8(w, bw = PALmap[*pp++], *cp++ = *bw++); + cp += toskew; + pp += fromskew; + } +} + +/* + * 8-bit greyscale => colormap/RGB + */ +DECLAREContigPutFunc(putgreytile) +{ + int samplesperpixel = img->samplesperpixel; + uint32** BWmap = img->BWmap; + + (void) y; + while (h-- > 0) { + for (x = w; x-- > 0;) + { + *cp++ = BWmap[*pp][0]; + pp += samplesperpixel; + } + cp += toskew; + pp += fromskew; + } +} + +/* + * 8-bit greyscale with associated alpha => colormap/RGBA + */ +DECLAREContigPutFunc(putagreytile) +{ + int samplesperpixel = img->samplesperpixel; + uint32** BWmap = img->BWmap; + + (void) y; + while (h-- > 0) { + for (x = w; x-- > 0;) + { + *cp++ = BWmap[*pp][0] & (*(pp+1) << 24 | ~A1); + pp += samplesperpixel; + } + cp += toskew; + pp += fromskew; + } +} + +/* + * 16-bit greyscale => colormap/RGB + */ +DECLAREContigPutFunc(put16bitbwtile) +{ + int samplesperpixel = img->samplesperpixel; + uint32** BWmap = img->BWmap; + + (void) y; + while (h-- > 0) { + uint16 *wp = (uint16 *) pp; + + for (x = w; x-- > 0;) + { + /* use high order byte of 16bit value */ + + *cp++ = BWmap[*wp >> 8][0]; + pp += 2 * samplesperpixel; + wp += samplesperpixel; + } + cp += toskew; + pp += fromskew; + } +} + +/* + * 1-bit bilevel => colormap/RGB + */ +DECLAREContigPutFunc(put1bitbwtile) +{ + uint32** BWmap = img->BWmap; + + (void) x; (void) y; + fromskew /= 8; + while (h-- > 0) { + uint32* bw; + UNROLL8(w, bw = BWmap[*pp++], *cp++ = *bw++); + cp += toskew; + pp += fromskew; + } +} + +/* + * 2-bit greyscale => colormap/RGB + */ +DECLAREContigPutFunc(put2bitbwtile) +{ + uint32** BWmap = img->BWmap; + + (void) x; (void) y; + fromskew /= 4; + while (h-- > 0) { + uint32* bw; + UNROLL4(w, bw = BWmap[*pp++], *cp++ = *bw++); + cp += toskew; + pp += fromskew; + } +} + +/* + * 4-bit greyscale => colormap/RGB + */ +DECLAREContigPutFunc(put4bitbwtile) +{ + uint32** BWmap = img->BWmap; + + (void) x; (void) y; + fromskew /= 2; + while (h-- > 0) { + uint32* bw; + UNROLL2(w, bw = BWmap[*pp++], *cp++ = *bw++); + cp += toskew; + pp += fromskew; + } +} + +/* + * 8-bit packed samples, no Map => RGB + */ +DECLAREContigPutFunc(putRGBcontig8bittile) +{ + int samplesperpixel = img->samplesperpixel; + + (void) x; (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + UNROLL8(w, NOP, + *cp++ = PACK(pp[0], pp[1], pp[2]); + pp += samplesperpixel); + cp += toskew; + pp += fromskew; + } +} + +/* + * 8-bit packed samples => RGBA w/ associated alpha + * (known to have Map == NULL) + */ +DECLAREContigPutFunc(putRGBAAcontig8bittile) +{ + int samplesperpixel = img->samplesperpixel; + + (void) x; (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + UNROLL8(w, NOP, + *cp++ = PACK4(pp[0], pp[1], pp[2], pp[3]); + pp += samplesperpixel); + cp += toskew; + pp += fromskew; + } +} + +/* + * 8-bit packed samples => RGBA w/ unassociated alpha + * (known to have Map == NULL) + */ +DECLAREContigPutFunc(putRGBUAcontig8bittile) +{ + int samplesperpixel = img->samplesperpixel; + (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + uint32 r, g, b, a; + uint8* m; + for (x = w; x-- > 0;) { + a = pp[3]; + m = img->UaToAa+(a<<8); + r = m[pp[0]]; + g = m[pp[1]]; + b = m[pp[2]]; + *cp++ = PACK4(r,g,b,a); + pp += samplesperpixel; + } + cp += toskew; + pp += fromskew; + } +} + +/* + * 16-bit packed samples => RGB + */ +DECLAREContigPutFunc(putRGBcontig16bittile) +{ + int samplesperpixel = img->samplesperpixel; + uint16 *wp = (uint16 *)pp; + (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + for (x = w; x-- > 0;) { + *cp++ = PACK(img->Bitdepth16To8[wp[0]], + img->Bitdepth16To8[wp[1]], + img->Bitdepth16To8[wp[2]]); + wp += samplesperpixel; + } + cp += toskew; + wp += fromskew; + } +} + +/* + * 16-bit packed samples => RGBA w/ associated alpha + * (known to have Map == NULL) + */ +DECLAREContigPutFunc(putRGBAAcontig16bittile) +{ + int samplesperpixel = img->samplesperpixel; + uint16 *wp = (uint16 *)pp; + (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + for (x = w; x-- > 0;) { + *cp++ = PACK4(img->Bitdepth16To8[wp[0]], + img->Bitdepth16To8[wp[1]], + img->Bitdepth16To8[wp[2]], + img->Bitdepth16To8[wp[3]]); + wp += samplesperpixel; + } + cp += toskew; + wp += fromskew; + } +} + +/* + * 16-bit packed samples => RGBA w/ unassociated alpha + * (known to have Map == NULL) + */ +DECLAREContigPutFunc(putRGBUAcontig16bittile) +{ + int samplesperpixel = img->samplesperpixel; + uint16 *wp = (uint16 *)pp; + (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + uint32 r,g,b,a; + uint8* m; + for (x = w; x-- > 0;) { + a = img->Bitdepth16To8[wp[3]]; + m = img->UaToAa+(a<<8); + r = m[img->Bitdepth16To8[wp[0]]]; + g = m[img->Bitdepth16To8[wp[1]]]; + b = m[img->Bitdepth16To8[wp[2]]]; + *cp++ = PACK4(r,g,b,a); + wp += samplesperpixel; + } + cp += toskew; + wp += fromskew; + } +} + +/* + * 8-bit packed CMYK samples w/o Map => RGB + * + * NB: The conversion of CMYK->RGB is *very* crude. + */ +/*DECLAREContigPutFunc(putRGBcontig8bitCMYKtile) +{ + int samplesperpixel = img->samplesperpixel; + uint16 r, g, b, k; + + (void) x; (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + UNROLL8(w, NOP, + k = 255 - pp[3]; + r = (k*(255-pp[0]))/255; + g = (k*(255-pp[1]))/255; + b = (k*(255-pp[2]))/255; + *cp++ = PACK(r, g, b); + pp += samplesperpixel); + cp += toskew; + pp += fromskew; +}*/ +/* Modify in 20090723 by Sunliang.Liu */ +DECLAREContigPutFunc(putRGBcontig8bitCMYKtile) +{ + int samplesperpixel = img->samplesperpixel; + uint8 r, g, b, k; + + (void) x; (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + UNROLL8(w, NOP, + if(!TIFFCmyk2Rgb(img->tif->tif_clientdata,pp[0],pp[1],pp[2],pp[3], + &r,&g,&b)){ + k = 255 - pp[3]; + r = (k*(255-pp[0]))/255; + g = (k*(255-pp[1]))/255; + b = (k*(255-pp[2]))/255; + } + + *cp++ = PACK(r, g, b); + pp += samplesperpixel); + cp += toskew; + pp += fromskew; + } +} + +/* + * 16-bit packed CMYK samples w/o Map => RGB(8-bit) + * + * NB: The conversion of CMYK->RGB is *very* crude. + */ +DECLAREContigPutFunc(putRGBcontig16bitCMYKtile) +{ + int samplesperpixel = img->samplesperpixel; + uint16* wp = (uint16*)pp; + uint8 C, M, Y, K; + uint8 r, g, b; + + (void) x; (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + UNROLL8(w, NOP, + C = wp[0]>>8;M = wp[1]>>8;Y = wp[2]>>8;K = wp[3]>>8; + if(!TIFFCmyk2Rgb(img->tif->tif_clientdata,C,M,Y,K, + &r,&g,&b)){ + K = 255 - K; + r = (K*(255-C))/255; + g = (K*(255-M))/255; + b = (K*(255-Y))/255; + } + + *cp++ = PACK(r, g, b); + wp += samplesperpixel); + cp += toskew; + wp += fromskew; + } +} + +/* + * 8-bit packed CMYK samples w/Map => RGB + * + * NB: The conversion of CMYK->RGB is *very* crude. + */ +/* +DECLAREContigPutFunc(putRGBcontig8bitCMYKMaptile) +{ + int samplesperpixel = img->samplesperpixel; + TIFFRGBValue* Map = img->Map; + uint16 r, g, b, k; + + (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + for (x = w; x-- > 0;) { + k = 255 - pp[3]; + r = (k*(255-pp[0]))/255; + g = (k*(255-pp[1]))/255; + b = (k*(255-pp[2]))/255; + *cp++ = PACK(Map[r], Map[g], Map[b]); + pp += samplesperpixel; + } + pp += fromskew; + cp += toskew; + } +}*/ +/* Modify in 20090723 by Sunliang.Liu */ +DECLAREContigPutFunc(putRGBcontig8bitCMYKMaptile) +{ + int samplesperpixel = img->samplesperpixel; + TIFFRGBValue* Map = img->Map; + uint8 r, g, b, k; + + (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + for (x = w; x-- > 0;) { + if(!TIFFCmyk2Rgb(img->tif->tif_clientdata,pp[0],pp[1],pp[2],pp[3], + &r,&g,&b)){ + k = 255 - pp[3]; + r = (k*(255-pp[0]))/255; + g = (k*(255-pp[1]))/255; + b = (k*(255-pp[2]))/255; + } + *cp++ = PACK(Map[r], Map[g], Map[b]); + pp += samplesperpixel; + } + pp += fromskew; + cp += toskew; + } +} + +/* + * 16-bit packed CMYK samples w/Map => RGB(8-bit) + * + * NB: The conversion of CMYK->RGB is *very* crude. + */ +DECLAREContigPutFunc(putRGBcontig16bitCMYKMaptile) +{ + int samplesperpixel = img->samplesperpixel; + TIFFRGBValue* Map = img->Map; + uint16* wp = (uint16*)pp; + uint8 C, M, Y, K; + uint8 r, g, b; + + (void) y; + fromskew *= samplesperpixel; + while (h-- > 0) { + for (x = w; x-- > 0;) { + C = wp[0]>>8;M = wp[1]>>8;Y = wp[2]>>8;K = wp[3]>>8; + if(!TIFFCmyk2Rgb(img->tif->tif_clientdata,C,M,Y,K, + &r,&g,&b)){ + K = 255 - K; + r = (K*(255-C))/255; + g = (K*(255-M))/255; + b = (K*(255-Y))/255; + } + *cp++ = PACK(Map[r], Map[g], Map[b]); + wp += samplesperpixel; + } + wp += fromskew; + cp += toskew; + } +} + +#define DECLARESepPutFunc(name) \ +static void name(\ + TIFFRGBAImage* img,\ + uint32* cp,\ + uint32 x, uint32 y, \ + uint32 w, uint32 h,\ + int32 fromskew, int32 toskew,\ + unsigned char* r, unsigned char* g, unsigned char* b, unsigned char* a\ +) + +/* + * 8-bit unpacked samples => RGB + */ +DECLARESepPutFunc(putRGBseparate8bittile) +{ + (void) img; (void) x; (void) y; (void) a; + while (h-- > 0) { + UNROLL8(w, NOP, *cp++ = PACK(*r++, *g++, *b++)); + SKEW(r, g, b, fromskew); + cp += toskew; + } +} + +/* + * 8-bit unpacked samples => RGBA w/ associated alpha + */ +DECLARESepPutFunc(putRGBAAseparate8bittile) +{ + (void) img; (void) x; (void) y; + while (h-- > 0) { + UNROLL8(w, NOP, *cp++ = PACK4(*r++, *g++, *b++, *a++)); + SKEW4(r, g, b, a, fromskew); + cp += toskew; + } +} + +/* + * 8-bit unpacked CMYK samples => RGBA + */ +DECLARESepPutFunc(putCMYKseparate8bittile) +{ + (void) img; (void) y; + while (h-- > 0) { + uint32 rv, gv, bv, kv; + for (x = w; x-- > 0;) { + kv = 255 - *a++; + rv = (kv*(255-*r++))/255; + gv = (kv*(255-*g++))/255; + bv = (kv*(255-*b++))/255; + *cp++ = PACK4(rv,gv,bv,255); + } + SKEW4(r, g, b, a, fromskew); + cp += toskew; + } +} + +/* + * 8-bit unpacked samples => RGBA w/ unassociated alpha + */ +DECLARESepPutFunc(putRGBUAseparate8bittile) +{ + (void) img; (void) y; + while (h-- > 0) { + uint32 rv, gv, bv, av; + uint8* m; + for (x = w; x-- > 0;) { + av = *a++; + m = img->UaToAa+(av<<8); + rv = m[*r++]; + gv = m[*g++]; + bv = m[*b++]; + *cp++ = PACK4(rv,gv,bv,av); + } + SKEW4(r, g, b, a, fromskew); + cp += toskew; + } +} + +/* + * 16-bit unpacked samples => RGB + */ +DECLARESepPutFunc(putRGBseparate16bittile) +{ + uint16 *wr = (uint16*) r; + uint16 *wg = (uint16*) g; + uint16 *wb = (uint16*) b; + (void) img; (void) y; (void) a; + while (h-- > 0) { + for (x = 0; x < w; x++) + *cp++ = PACK(img->Bitdepth16To8[*wr++], + img->Bitdepth16To8[*wg++], + img->Bitdepth16To8[*wb++]); + SKEW(wr, wg, wb, fromskew); + cp += toskew; + } +} + +/* + * 16-bit unpacked samples => RGBA w/ associated alpha + */ +DECLARESepPutFunc(putRGBAAseparate16bittile) +{ + uint16 *wr = (uint16*) r; + uint16 *wg = (uint16*) g; + uint16 *wb = (uint16*) b; + uint16 *wa = (uint16*) a; + (void) img; (void) y; + while (h-- > 0) { + for (x = 0; x < w; x++) + *cp++ = PACK4(img->Bitdepth16To8[*wr++], + img->Bitdepth16To8[*wg++], + img->Bitdepth16To8[*wb++], + img->Bitdepth16To8[*wa++]); + SKEW4(wr, wg, wb, wa, fromskew); + cp += toskew; + } +} + +/* + * 16-bit unpacked samples => RGBA w/ unassociated alpha + */ +DECLARESepPutFunc(putRGBUAseparate16bittile) +{ + uint16 *wr = (uint16*) r; + uint16 *wg = (uint16*) g; + uint16 *wb = (uint16*) b; + uint16 *wa = (uint16*) a; + (void) img; (void) y; + while (h-- > 0) { + uint32 r,g,b,a; + uint8* m; + for (x = w; x-- > 0;) { + a = img->Bitdepth16To8[*wa++]; + m = img->UaToAa+(a<<8); + r = m[img->Bitdepth16To8[*wr++]]; + g = m[img->Bitdepth16To8[*wg++]]; + b = m[img->Bitdepth16To8[*wb++]]; + *cp++ = PACK4(r,g,b,a); + } + SKEW4(wr, wg, wb, wa, fromskew); + cp += toskew; + } +} + +/* + * 8-bit packed CIE L*a*b 1976 samples => RGB + */ +DECLAREContigPutFunc(putcontig8bitCIELab) +{ + float X, Y, Z; + uint32 r, g, b; + (void) y; + fromskew *= 3; + while (h-- > 0) { + for (x = w; x-- > 0;) { + TIFFCIELabToXYZ(img->cielab, + (unsigned char)pp[0], + (signed char)pp[1], + (signed char)pp[2], + &X, &Y, &Z); + TIFFXYZToRGB(img->cielab, X, Y, Z, &r, &g, &b); + *cp++ = PACK(r, g, b); + pp += 3; + } + cp += toskew; + pp += fromskew; + } +} + +/* + * YCbCr -> RGB conversion and packing routines. + */ + +#define YCbCrtoRGB(dst, Y) { \ + uint32 r, g, b; \ + TIFFYCbCrtoRGB(img->ycbcr, (Y), Cb, Cr, &r, &g, &b); \ + dst = PACK(r, g, b); \ +} + +/* + * 8-bit packed YCbCr samples => RGB + * This function is generic for different sampling sizes, + * and can handle blocks sizes that aren't multiples of the + * sampling size. However, it is substantially less optimized + * than the specific sampling cases. It is used as a fallback + * for difficult blocks. + */ +#ifdef notdef +static void putcontig8bitYCbCrGenericTile( + TIFFRGBAImage* img, + uint32* cp, + uint32 x, uint32 y, + uint32 w, uint32 h, + int32 fromskew, int32 toskew, + unsigned char* pp, + int h_group, + int v_group ) + +{ + uint32* cp1 = cp+w+toskew; + uint32* cp2 = cp1+w+toskew; + uint32* cp3 = cp2+w+toskew; + int32 incr = 3*w+4*toskew; + int32 Cb, Cr; + int group_size = v_group * h_group + 2; + + (void) y; + fromskew = (fromskew * group_size) / h_group; + + for( yy = 0; yy < h; yy++ ) + { + unsigned char *pp_line; + int y_line_group = yy / v_group; + int y_remainder = yy - y_line_group * v_group; + + pp_line = pp + v_line_group * + + + for( xx = 0; xx < w; xx++ ) + { + Cb = pp + } + } + for (; h >= 4; h -= 4) { + x = w>>2; + do { + Cb = pp[16]; + Cr = pp[17]; + + YCbCrtoRGB(cp [0], pp[ 0]); + YCbCrtoRGB(cp [1], pp[ 1]); + YCbCrtoRGB(cp [2], pp[ 2]); + YCbCrtoRGB(cp [3], pp[ 3]); + YCbCrtoRGB(cp1[0], pp[ 4]); + YCbCrtoRGB(cp1[1], pp[ 5]); + YCbCrtoRGB(cp1[2], pp[ 6]); + YCbCrtoRGB(cp1[3], pp[ 7]); + YCbCrtoRGB(cp2[0], pp[ 8]); + YCbCrtoRGB(cp2[1], pp[ 9]); + YCbCrtoRGB(cp2[2], pp[10]); + YCbCrtoRGB(cp2[3], pp[11]); + YCbCrtoRGB(cp3[0], pp[12]); + YCbCrtoRGB(cp3[1], pp[13]); + YCbCrtoRGB(cp3[2], pp[14]); + YCbCrtoRGB(cp3[3], pp[15]); + + cp += 4, cp1 += 4, cp2 += 4, cp3 += 4; + pp += 18; + } while (--x); + cp += incr, cp1 += incr, cp2 += incr, cp3 += incr; + pp += fromskew; + } +} +#endif + +/* + * 8-bit packed YCbCr samples w/ 4,4 subsampling => RGB + */ +DECLAREContigPutFunc(putcontig8bitYCbCr44tile) +{ + uint32* cp1 = cp+w+toskew; + uint32* cp2 = cp1+w+toskew; + uint32* cp3 = cp2+w+toskew; + int32 incr = 3*w+4*toskew; + + (void) y; + /* adjust fromskew */ + fromskew = (fromskew * 18) / 4; + if ((h & 3) == 0 && (w & 3) == 0) { + for (; h >= 4; h -= 4) { + x = w>>2; + do { + int32 Cb = pp[16]; + int32 Cr = pp[17]; + + YCbCrtoRGB(cp [0], pp[ 0]); + YCbCrtoRGB(cp [1], pp[ 1]); + YCbCrtoRGB(cp [2], pp[ 2]); + YCbCrtoRGB(cp [3], pp[ 3]); + YCbCrtoRGB(cp1[0], pp[ 4]); + YCbCrtoRGB(cp1[1], pp[ 5]); + YCbCrtoRGB(cp1[2], pp[ 6]); + YCbCrtoRGB(cp1[3], pp[ 7]); + YCbCrtoRGB(cp2[0], pp[ 8]); + YCbCrtoRGB(cp2[1], pp[ 9]); + YCbCrtoRGB(cp2[2], pp[10]); + YCbCrtoRGB(cp2[3], pp[11]); + YCbCrtoRGB(cp3[0], pp[12]); + YCbCrtoRGB(cp3[1], pp[13]); + YCbCrtoRGB(cp3[2], pp[14]); + YCbCrtoRGB(cp3[3], pp[15]); + + cp += 4, cp1 += 4, cp2 += 4, cp3 += 4; + pp += 18; + } while (--x); + cp += incr, cp1 += incr, cp2 += incr, cp3 += incr; + pp += fromskew; + } + } else { + while (h > 0) { + for (x = w; x > 0;) { + int32 Cb = pp[16]; + int32 Cr = pp[17]; + switch (x) { + default: + switch (h) { + default: YCbCrtoRGB(cp3[3], pp[15]); /* FALLTHROUGH */ + case 3: YCbCrtoRGB(cp2[3], pp[11]); /* FALLTHROUGH */ + case 2: YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */ + case 1: YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */ + } /* FALLTHROUGH */ + case 3: + switch (h) { + default: YCbCrtoRGB(cp3[2], pp[14]); /* FALLTHROUGH */ + case 3: YCbCrtoRGB(cp2[2], pp[10]); /* FALLTHROUGH */ + case 2: YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */ + case 1: YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */ + } /* FALLTHROUGH */ + case 2: + switch (h) { + default: YCbCrtoRGB(cp3[1], pp[13]); /* FALLTHROUGH */ + case 3: YCbCrtoRGB(cp2[1], pp[ 9]); /* FALLTHROUGH */ + case 2: YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */ + case 1: YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */ + } /* FALLTHROUGH */ + case 1: + switch (h) { + default: YCbCrtoRGB(cp3[0], pp[12]); /* FALLTHROUGH */ + case 3: YCbCrtoRGB(cp2[0], pp[ 8]); /* FALLTHROUGH */ + case 2: YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */ + case 1: YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */ + } /* FALLTHROUGH */ + } + if (x < 4) { + cp += x; cp1 += x; cp2 += x; cp3 += x; + x = 0; + } + else { + cp += 4; cp1 += 4; cp2 += 4; cp3 += 4; + x -= 4; + } + pp += 18; + } + if (h <= 4) + break; + h -= 4; + cp += incr, cp1 += incr, cp2 += incr, cp3 += incr; + pp += fromskew; + } + } +} + +/* + * 8-bit packed YCbCr samples w/ 4,2 subsampling => RGB + */ +DECLAREContigPutFunc(putcontig8bitYCbCr42tile) +{ + uint32* cp1 = cp+w+toskew; + int32 incr = 2*toskew+w; + + (void) y; + fromskew = (fromskew * 10) / 4; + if ((h & 3) == 0 && (w & 1) == 0) { + for (; h >= 2; h -= 2) { + x = w>>2; + do { + int32 Cb = pp[8]; + int32 Cr = pp[9]; + + YCbCrtoRGB(cp [0], pp[0]); + YCbCrtoRGB(cp [1], pp[1]); + YCbCrtoRGB(cp [2], pp[2]); + YCbCrtoRGB(cp [3], pp[3]); + YCbCrtoRGB(cp1[0], pp[4]); + YCbCrtoRGB(cp1[1], pp[5]); + YCbCrtoRGB(cp1[2], pp[6]); + YCbCrtoRGB(cp1[3], pp[7]); + + cp += 4, cp1 += 4; + pp += 10; + } while (--x); + cp += incr, cp1 += incr; + pp += fromskew; + } + } else { + while (h > 0) { + for (x = w; x > 0;) { + int32 Cb = pp[8]; + int32 Cr = pp[9]; + switch (x) { + default: + switch (h) { + default: YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */ + case 1: YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */ + } /* FALLTHROUGH */ + case 3: + switch (h) { + default: YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */ + case 1: YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */ + } /* FALLTHROUGH */ + case 2: + switch (h) { + default: YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */ + case 1: YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */ + } /* FALLTHROUGH */ + case 1: + switch (h) { + default: YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */ + case 1: YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */ + } /* FALLTHROUGH */ + } + if (x < 4) { + cp += x; cp1 += x; + x = 0; + } + else { + cp += 4; cp1 += 4; + x -= 4; + } + pp += 10; + } + if (h <= 2) + break; + h -= 2; + cp += incr, cp1 += incr; + pp += fromskew; + } + } +} + +/* + * 8-bit packed YCbCr samples w/ 4,1 subsampling => RGB + */ +DECLAREContigPutFunc(putcontig8bitYCbCr41tile) +{ + (void) y; + /* XXX adjust fromskew */ + do { + x = w>>2; + do { + int32 Cb = pp[4]; + int32 Cr = pp[5]; + + YCbCrtoRGB(cp [0], pp[0]); + YCbCrtoRGB(cp [1], pp[1]); + YCbCrtoRGB(cp [2], pp[2]); + YCbCrtoRGB(cp [3], pp[3]); + + cp += 4; + pp += 6; + } while (--x); + + if( (w&3) != 0 ) + { + int32 Cb = pp[4]; + int32 Cr = pp[5]; + + switch( (w&3) ) { + case 3: YCbCrtoRGB(cp [2], pp[2]); + case 2: YCbCrtoRGB(cp [1], pp[1]); + case 1: YCbCrtoRGB(cp [0], pp[0]); + case 0: break; + } + + cp += (w&3); + pp += 6; + } + + cp += toskew; + pp += fromskew; + } while (--h); + +} + +/* + * 8-bit packed YCbCr samples w/ 2,2 subsampling => RGB + */ +DECLAREContigPutFunc(putcontig8bitYCbCr22tile) +{ + uint32* cp2; + int32 incr = 2*toskew+w; + (void) y; + fromskew = (fromskew / 2) * 6; + cp2 = cp+w+toskew; + while (h>=2) { + x = w; + while (x>=2) { + uint32 Cb = pp[4]; + uint32 Cr = pp[5]; + YCbCrtoRGB(cp[0], pp[0]); + YCbCrtoRGB(cp[1], pp[1]); + YCbCrtoRGB(cp2[0], pp[2]); + YCbCrtoRGB(cp2[1], pp[3]); + cp += 2; + cp2 += 2; + pp += 6; + x -= 2; + } + if (x==1) { + uint32 Cb = pp[4]; + uint32 Cr = pp[5]; + YCbCrtoRGB(cp[0], pp[0]); + YCbCrtoRGB(cp2[0], pp[2]); + cp ++ ; + cp2 ++ ; + pp += 6; + } + cp += incr; + cp2 += incr; + pp += fromskew; + h-=2; + } + if (h==1) { + x = w; + while (x>=2) { + uint32 Cb = pp[4]; + uint32 Cr = pp[5]; + YCbCrtoRGB(cp[0], pp[0]); + YCbCrtoRGB(cp[1], pp[1]); + cp += 2; + cp2 += 2; + pp += 6; + x -= 2; + } + if (x==1) { + uint32 Cb = pp[4]; + uint32 Cr = pp[5]; + YCbCrtoRGB(cp[0], pp[0]); + } + } +} + +/* + * 8-bit packed YCbCr samples w/ 2,1 subsampling => RGB + */ +DECLAREContigPutFunc(putcontig8bitYCbCr21tile) +{ + (void) y; + fromskew = (fromskew * 4) / 2; + do { + x = w>>1; + do { + int32 Cb = pp[2]; + int32 Cr = pp[3]; + + YCbCrtoRGB(cp[0], pp[0]); + YCbCrtoRGB(cp[1], pp[1]); + + cp += 2; + pp += 4; + } while (--x); + + if( (w&1) != 0 ) + { + int32 Cb = pp[2]; + int32 Cr = pp[3]; + + YCbCrtoRGB(cp[0], pp[0]); + + cp += 1; + pp += 4; + } + + cp += toskew; + pp += fromskew; + } while (--h); +} + +/* + * 8-bit packed YCbCr samples w/ 1,2 subsampling => RGB + */ +DECLAREContigPutFunc(putcontig8bitYCbCr12tile) +{ + uint32* cp2; + int32 incr = 2*toskew+w; + (void) y; + fromskew = (fromskew / 2) * 4; + cp2 = cp+w+toskew; + while (h>=2) { + x = w; + do { + uint32 Cb = pp[2]; + uint32 Cr = pp[3]; + YCbCrtoRGB(cp[0], pp[0]); + YCbCrtoRGB(cp2[0], pp[1]); + cp ++; + cp2 ++; + pp += 4; + } while (--x); + cp += incr; + cp2 += incr; + pp += fromskew; + h-=2; + } + if (h==1) { + x = w; + do { + uint32 Cb = pp[2]; + uint32 Cr = pp[3]; + YCbCrtoRGB(cp[0], pp[0]); + cp ++; + pp += 4; + } while (--x); + } +} + +/* + * 8-bit packed YCbCr samples w/ no subsampling => RGB + */ +DECLAREContigPutFunc(putcontig8bitYCbCr11tile) +{ + (void) y; + fromskew *= 3; + do { + x = w; /* was x = w>>1; patched 2000/09/25 warmerda@home.com */ + do { + int32 Cb = pp[1]; + int32 Cr = pp[2]; + + YCbCrtoRGB(*cp++, pp[0]); + + pp += 3; + } while (--x); + cp += toskew; + pp += fromskew; + } while (--h); +} + +/* + * 8-bit packed YCbCr samples w/ no subsampling => RGB + */ +DECLARESepPutFunc(putseparate8bitYCbCr11tile) +{ + (void) y; + (void) a; + /* TODO: naming of input vars is still off, change obfuscating declaration inside define, or resolve obfuscation */ + while (h-- > 0) { + x = w; + do { + uint32 dr, dg, db; + TIFFYCbCrtoRGB(img->ycbcr,*r++,*g++,*b++,&dr,&dg,&db); + *cp++ = PACK(dr,dg,db); + } while (--x); + SKEW(r, g, b, fromskew); + cp += toskew; + } +} +#undef YCbCrtoRGB + +static int +initYCbCrConversion(TIFFRGBAImage* img) +{ + static const char module[] = "initYCbCrConversion"; + + float *luma, *refBlackWhite; + + if (img->ycbcr == NULL) { + img->ycbcr = (TIFFYCbCrToRGB*) _TIFFmalloc( + TIFFroundup_32(sizeof (TIFFYCbCrToRGB), sizeof (long)) + + 4*256*sizeof (TIFFRGBValue) + + 2*256*sizeof (int) + + 3*256*sizeof (int32) + ); + if (img->ycbcr == NULL) { + TIFFErrorExt(img->tif->tif_clientdata, module, + "No space for YCbCr->RGB conversion state"); + return (0); + } + } + + TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRCOEFFICIENTS, &luma); + TIFFGetFieldDefaulted(img->tif, TIFFTAG_REFERENCEBLACKWHITE, + &refBlackWhite); + if (TIFFYCbCrToRGBInit(img->ycbcr, luma, refBlackWhite) < 0) + return(0); + return (1); +} + +static tileContigRoutine +initCIELabConversion(TIFFRGBAImage* img) +{ + static const char module[] = "initCIELabConversion"; + + float *whitePoint; + float refWhite[3]; + + if (!img->cielab) { + img->cielab = (TIFFCIELabToRGB *) + _TIFFmalloc(sizeof(TIFFCIELabToRGB)); + if (!img->cielab) { + TIFFErrorExt(img->tif->tif_clientdata, module, + "No space for CIE L*a*b*->RGB conversion state."); + return NULL; + } + } + + TIFFGetFieldDefaulted(img->tif, TIFFTAG_WHITEPOINT, &whitePoint); + refWhite[1] = 100.0F; + refWhite[0] = whitePoint[0] / whitePoint[1] * refWhite[1]; + refWhite[2] = (1.0F - whitePoint[0] - whitePoint[1]) + / whitePoint[1] * refWhite[1]; + if (TIFFCIELabToRGBInit(img->cielab, &display_sRGB, refWhite) < 0) { + TIFFErrorExt(img->tif->tif_clientdata, module, + "Failed to initialize CIE L*a*b*->RGB conversion state."); + _TIFFfree(img->cielab); + return NULL; + } + + return (tileContigRoutine)putcontig8bitCIELab; +} + +/* + * Greyscale images with less than 8 bits/sample are handled + * with a table to avoid lots of shifts and masks. The table + * is setup so that put*bwtile (below) can retrieve 8/bitspersample + * pixel values simply by indexing into the table with one + * number. + */ +static int +makebwmap(TIFFRGBAImage* img) +{ + TIFFRGBValue* Map = img->Map; + int bitspersample = img->bitspersample; + int nsamples = 8 / bitspersample; + int i; + uint32* p; + + if( nsamples == 0 ) + nsamples = 1; + + img->BWmap = (uint32**) _TIFFmalloc( + 256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32))); + if (img->BWmap == NULL) { + TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No space for B&W mapping table"); + return (0); + } + p = (uint32*)(img->BWmap + 256); + for (i = 0; i < 256; i++) { + TIFFRGBValue c; + img->BWmap[i] = p; + switch (bitspersample) { +#define GREY(x) c = Map[x]; *p++ = PACK(c,c,c); + case 1: + GREY(i>>7); + GREY((i>>6)&1); + GREY((i>>5)&1); + GREY((i>>4)&1); + GREY((i>>3)&1); + GREY((i>>2)&1); + GREY((i>>1)&1); + GREY(i&1); + break; + case 2: + GREY(i>>6); + GREY((i>>4)&3); + GREY((i>>2)&3); + GREY(i&3); + break; + case 4: + GREY(i>>4); + GREY(i&0xf); + break; + case 8: + case 16: + GREY(i); + break; + } +#undef GREY + } + return (1); +} + +/* + * Construct a mapping table to convert from the range + * of the data samples to [0,255] --for display. This + * process also handles inverting B&W images when needed. + */ +static int +setupMap(TIFFRGBAImage* img) +{ + int32 x, range; + + range = (int32)((1L<<img->bitspersample)-1); + + /* treat 16 bit the same as eight bit */ + if( img->bitspersample == 16 ) + range = (int32) 255; + + img->Map = (TIFFRGBValue*) _TIFFmalloc((range+1) * sizeof (TIFFRGBValue)); + if (img->Map == NULL) { + TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), + "No space for photometric conversion table"); + return (0); + } + if (img->photometric == PHOTOMETRIC_MINISWHITE) { + for (x = 0; x <= range; x++) + img->Map[x] = (TIFFRGBValue) (((range - x) * 255) / range); + } else { + for (x = 0; x <= range; x++) + img->Map[x] = (TIFFRGBValue) ((x * 255) / range); + } + if (img->bitspersample <= 16 && + (img->photometric == PHOTOMETRIC_MINISBLACK || + img->photometric == PHOTOMETRIC_MINISWHITE)) { + /* + * Use photometric mapping table to construct + * unpacking tables for samples <= 8 bits. + */ + if (!makebwmap(img)) + return (0); + /* no longer need Map, free it */ + _TIFFfree(img->Map), img->Map = NULL; + } + return (1); +} + +static int +checkcmap(TIFFRGBAImage* img) +{ + uint16* r = img->redcmap; + uint16* g = img->greencmap; + uint16* b = img->bluecmap; + long n = 1L<<img->bitspersample; + + while (n-- > 0) + if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256) + return (16); + return (8); +} + +static void +cvtcmap(TIFFRGBAImage* img) +{ + uint16* r = img->redcmap; + uint16* g = img->greencmap; + uint16* b = img->bluecmap; + long i; + + for (i = (1L<<img->bitspersample)-1; i >= 0; i--) { +#define CVT(x) ((uint16)((x)>>8)) + r[i] = CVT(r[i]); + g[i] = CVT(g[i]); + b[i] = CVT(b[i]); +#undef CVT + } +} + +/* + * Palette images with <= 8 bits/sample are handled + * with a table to avoid lots of shifts and masks. The table + * is setup so that put*cmaptile (below) can retrieve 8/bitspersample + * pixel values simply by indexing into the table with one + * number. + */ +static int +makecmap(TIFFRGBAImage* img) +{ + int bitspersample = img->bitspersample; + int nsamples = 8 / bitspersample; + uint16* r = img->redcmap; + uint16* g = img->greencmap; + uint16* b = img->bluecmap; + uint32 *p; + int i; + + img->PALmap = (uint32**) _TIFFmalloc( + 256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32))); + if (img->PALmap == NULL) { + TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No space for Palette mapping table"); + return (0); + } + p = (uint32*)(img->PALmap + 256); + for (i = 0; i < 256; i++) { + TIFFRGBValue c; + img->PALmap[i] = p; +#define CMAP(x) c = (TIFFRGBValue) x; *p++ = PACK(r[c]&0xff, g[c]&0xff, b[c]&0xff); + switch (bitspersample) { + case 1: + CMAP(i>>7); + CMAP((i>>6)&1); + CMAP((i>>5)&1); + CMAP((i>>4)&1); + CMAP((i>>3)&1); + CMAP((i>>2)&1); + CMAP((i>>1)&1); + CMAP(i&1); + break; + case 2: + CMAP(i>>6); + CMAP((i>>4)&3); + CMAP((i>>2)&3); + CMAP(i&3); + break; + case 4: + CMAP(i>>4); + CMAP(i&0xf); + break; + case 8: + CMAP(i); + break; + } +#undef CMAP + } + return (1); +} + +/* + * Construct any mapping table used + * by the associated put routine. + */ +static int +buildMap(TIFFRGBAImage* img) +{ + switch (img->photometric) { + case PHOTOMETRIC_RGB: + case PHOTOMETRIC_YCBCR: + case PHOTOMETRIC_SEPARATED: + if (img->bitspersample == 8) + break; + /* fall thru... */ + case PHOTOMETRIC_MINISBLACK: + case PHOTOMETRIC_MINISWHITE: + if (!setupMap(img)) + return (0); + break; + case PHOTOMETRIC_PALETTE: + /* + * Convert 16-bit colormap to 8-bit (unless it looks + * like an old-style 8-bit colormap). + */ + if (checkcmap(img) == 16) + cvtcmap(img); + else + TIFFWarningExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "Assuming 8-bit colormap"); + /* + * Use mapping table and colormap to construct + * unpacking tables for samples < 8 bits. + */ + if (img->bitspersample <= 8 && !makecmap(img)) + return (0); + break; + } + return (1); +} + +/* + * Select the appropriate conversion routine for packed data. + */ +static int +PickContigCase(TIFFRGBAImage* img) +{ + img->get = TIFFIsTiled(img->tif) ? gtTileContig : gtStripContig; + img->put.contig = NULL; + switch (img->photometric) { + case PHOTOMETRIC_RGB: + switch (img->bitspersample) { + case 8: + if (img->alpha == EXTRASAMPLE_ASSOCALPHA) + img->put.contig = putRGBAAcontig8bittile; + else if (img->alpha == EXTRASAMPLE_UNASSALPHA) + { + if (BuildMapUaToAa(img)) + img->put.contig = putRGBUAcontig8bittile; + } + else + img->put.contig = putRGBcontig8bittile; + break; + case 16: + if (img->alpha == EXTRASAMPLE_ASSOCALPHA) + { + if (BuildMapBitdepth16To8(img)) + img->put.contig = putRGBAAcontig16bittile; + } + else if (img->alpha == EXTRASAMPLE_UNASSALPHA) + { + if (BuildMapBitdepth16To8(img) && + BuildMapUaToAa(img)) + img->put.contig = putRGBUAcontig16bittile; + } + else + { + if (BuildMapBitdepth16To8(img)) + img->put.contig = putRGBcontig16bittile; + } + break; + } + break; + case PHOTOMETRIC_SEPARATED: + if (buildMap(img)) { + if (img->bitspersample == 8) { + if (!img->Map) + img->put.contig = putRGBcontig8bitCMYKtile; + else + img->put.contig = putRGBcontig8bitCMYKMaptile; + } + else if(img->bitspersample == 16) /*LiuSunliang added 16bpp CMYK support.*/ + { + if (!img->Map) + img->put.contig = putRGBcontig16bitCMYKtile; + else + img->put.contig = putRGBcontig16bitCMYKMaptile; + } + } + break; + case PHOTOMETRIC_PALETTE: + if (buildMap(img)) { + switch (img->bitspersample) { + case 8: + img->put.contig = put8bitcmaptile; + break; + case 4: + img->put.contig = put4bitcmaptile; + break; + case 2: + img->put.contig = put2bitcmaptile; + break; + case 1: + img->put.contig = put1bitcmaptile; + break; + } + } + break; + case PHOTOMETRIC_MINISWHITE: + case PHOTOMETRIC_MINISBLACK: + if (buildMap(img)) { + switch (img->bitspersample) { + case 16: + img->put.contig = put16bitbwtile; + break; + case 8: + if (img->alpha && img->samplesperpixel == 2) + img->put.contig = putagreytile; + else + img->put.contig = putgreytile; + break; + case 4: + img->put.contig = put4bitbwtile; + break; + case 2: + img->put.contig = put2bitbwtile; + break; + case 1: + img->put.contig = put1bitbwtile; + break; + } + } + break; + case PHOTOMETRIC_YCBCR: + if ((img->bitspersample==8) && (img->samplesperpixel==3)) + { + if (initYCbCrConversion(img)!=0) + { + /* + * The 6.0 spec says that subsampling must be + * one of 1, 2, or 4, and that vertical subsampling + * must always be <= horizontal subsampling; so + * there are only a few possibilities and we just + * enumerate the cases. + * Joris: added support for the [1,2] case, nonetheless, to accomodate + * some OJPEG files + */ + uint16 SubsamplingHor; + uint16 SubsamplingVer; + TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, &SubsamplingHor, &SubsamplingVer); + switch ((SubsamplingHor<<4)|SubsamplingVer) { + case 0x44: + img->put.contig = putcontig8bitYCbCr44tile; + break; + case 0x42: + img->put.contig = putcontig8bitYCbCr42tile; + break; + case 0x41: + img->put.contig = putcontig8bitYCbCr41tile; + break; + case 0x22: + img->put.contig = putcontig8bitYCbCr22tile; + break; + case 0x21: + img->put.contig = putcontig8bitYCbCr21tile; + break; + case 0x12: + img->put.contig = putcontig8bitYCbCr12tile; + break; + case 0x11: + img->put.contig = putcontig8bitYCbCr11tile; + break; + } + } + } + break; + case PHOTOMETRIC_CIELAB: + if (buildMap(img)) { + if (img->bitspersample == 8) + img->put.contig = initCIELabConversion(img); + break; + } + } + return ((img->get!=NULL) && (img->put.contig!=NULL)); +} + +/* + * Select the appropriate conversion routine for unpacked data. + * + * NB: we assume that unpacked single channel data is directed + * to the "packed routines. + */ +static int +PickSeparateCase(TIFFRGBAImage* img) +{ + img->get = TIFFIsTiled(img->tif) ? gtTileSeparate : gtStripSeparate; + img->put.separate = NULL; + switch (img->photometric) { + case PHOTOMETRIC_MINISWHITE: + case PHOTOMETRIC_MINISBLACK: + /* greyscale images processed pretty much as RGB by gtTileSeparate */ + case PHOTOMETRIC_RGB: + switch (img->bitspersample) { + case 8: + if (img->alpha == EXTRASAMPLE_ASSOCALPHA) + img->put.separate = putRGBAAseparate8bittile; + else if (img->alpha == EXTRASAMPLE_UNASSALPHA) + { + if (BuildMapUaToAa(img)) + img->put.separate = putRGBUAseparate8bittile; + } + else + img->put.separate = putRGBseparate8bittile; + break; + case 16: + if (img->alpha == EXTRASAMPLE_ASSOCALPHA) + { + if (BuildMapBitdepth16To8(img)) + img->put.separate = putRGBAAseparate16bittile; + } + else if (img->alpha == EXTRASAMPLE_UNASSALPHA) + { + if (BuildMapBitdepth16To8(img) && + BuildMapUaToAa(img)) + img->put.separate = putRGBUAseparate16bittile; + } + else + { + if (BuildMapBitdepth16To8(img)) + img->put.separate = putRGBseparate16bittile; + } + break; + } + break; + case PHOTOMETRIC_SEPARATED: + if (img->bitspersample == 8 && img->samplesperpixel == 4) + { + img->alpha = 1; // Not alpha, but seems like the only way to get 4th band + img->put.separate = putCMYKseparate8bittile; + } + break; + case PHOTOMETRIC_YCBCR: + if ((img->bitspersample==8) && (img->samplesperpixel==3)) + { + if (initYCbCrConversion(img)!=0) + { + uint16 hs, vs; + TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, &hs, &vs); + switch ((hs<<4)|vs) { + case 0x11: + img->put.separate = putseparate8bitYCbCr11tile; + break; + /* TODO: add other cases here */ + } + } + } + break; + } + return ((img->get!=NULL) && (img->put.separate!=NULL)); +} + +static int +BuildMapUaToAa(TIFFRGBAImage* img) +{ + static const char module[]="BuildMapUaToAa"; + uint8* m; + uint16 na,nv; + assert(img->UaToAa==NULL); + img->UaToAa=_TIFFmalloc(65536); + if (img->UaToAa==NULL) + { + TIFFErrorExt(img->tif->tif_clientdata,module,"Out of memory"); + return(0); + } + m=img->UaToAa; + for (na=0; na<256; na++) + { + for (nv=0; nv<256; nv++) + *m++=(nv*na+127)/255; + } + return(1); +} + +static int +BuildMapBitdepth16To8(TIFFRGBAImage* img) +{ + static const char module[]="BuildMapBitdepth16To8"; + uint8* m; + uint32 n; + assert(img->Bitdepth16To8==NULL); + img->Bitdepth16To8=_TIFFmalloc(65536); + if (img->Bitdepth16To8==NULL) + { + TIFFErrorExt(img->tif->tif_clientdata,module,"Out of memory"); + return(0); + } + m=img->Bitdepth16To8; + for (n=0; n<65536; n++) + *m++=(n+128)/257; + return(1); +} + + +/* + * Read a whole strip off data from the file, and convert to RGBA form. + * If this is the last strip, then it will only contain the portion of + * the strip that is actually within the image space. The result is + * organized in bottom to top form. + */ + + +int +TIFFReadRGBAStrip(TIFF* tif, uint32 row, uint32 * raster ) + +{ + char emsg[1024] = ""; + TIFFRGBAImage img; + int ok; + uint32 rowsperstrip, rows_to_read; + + if( TIFFIsTiled( tif ) ) + { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), + "Can't use TIFFReadRGBAStrip() with tiled file."); + return (0); + } + + TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); + if( (row % rowsperstrip) != 0 ) + { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), + "Row passed to TIFFReadRGBAStrip() must be first in a strip."); + return (0); + } + + if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, 0, emsg)) { + + img.row_offset = row; + img.col_offset = 0; + + if( row + rowsperstrip > img.height ) + rows_to_read = img.height - row; + else + rows_to_read = rowsperstrip; + + ok = TIFFRGBAImageGet(&img, raster, img.width, rows_to_read ); + + TIFFRGBAImageEnd(&img); + } else { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg); + ok = 0; + } + + return (ok); +} + +/* + * Read a whole tile off data from the file, and convert to RGBA form. + * The returned RGBA data is organized from bottom to top of tile, + * and may include zeroed areas if the tile extends off the image. + */ + +int +TIFFReadRGBATile(TIFF* tif, uint32 col, uint32 row, uint32 * raster) + +{ + char emsg[1024] = ""; + TIFFRGBAImage img; + int ok; + uint32 tile_xsize, tile_ysize; + uint32 read_xsize, read_ysize; + uint32 i_row; + + /* + * Verify that our request is legal - on a tile file, and on a + * tile boundary. + */ + + if( !TIFFIsTiled( tif ) ) + { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), + "Can't use TIFFReadRGBATile() with stripped file."); + return (0); + } + + TIFFGetFieldDefaulted(tif, TIFFTAG_TILEWIDTH, &tile_xsize); + TIFFGetFieldDefaulted(tif, TIFFTAG_TILELENGTH, &tile_ysize); + if( (col % tile_xsize) != 0 || (row % tile_ysize) != 0 ) + { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), + "Row/col passed to TIFFReadRGBATile() must be top" + "left corner of a tile."); + return (0); + } + + /* + * Setup the RGBA reader. + */ + + if (!TIFFRGBAImageOK(tif, emsg) + || !TIFFRGBAImageBegin(&img, tif, 0, emsg)) { + TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg); + return( 0 ); + } + + /* + * The TIFFRGBAImageGet() function doesn't allow us to get off the + * edge of the image, even to fill an otherwise valid tile. So we + * figure out how much we can read, and fix up the tile buffer to + * a full tile configuration afterwards. + */ + + if( row + tile_ysize > img.height ) + read_ysize = img.height - row; + else + read_ysize = tile_ysize; + + if( col + tile_xsize > img.width ) + read_xsize = img.width - col; + else + read_xsize = tile_xsize; + + /* + * Read the chunk of imagery. + */ + + img.row_offset = row; + img.col_offset = col; + + ok = TIFFRGBAImageGet(&img, raster, read_xsize, read_ysize ); + + TIFFRGBAImageEnd(&img); + + /* + * If our read was incomplete we will need to fix up the tile by + * shifting the data around as if a full tile of data is being returned. + * + * This is all the more complicated because the image is organized in + * bottom to top format. + */ + + if( read_xsize == tile_xsize && read_ysize == tile_ysize ) + return( ok ); + + for( i_row = 0; i_row < read_ysize; i_row++ ) { + memmove( raster + (tile_ysize - i_row - 1) * tile_xsize, + raster + (read_ysize - i_row - 1) * read_xsize, + read_xsize * sizeof(uint32) ); + _TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize+read_xsize, + 0, sizeof(uint32) * (tile_xsize - read_xsize) ); + } + + for( i_row = read_ysize; i_row < tile_ysize; i_row++ ) { + _TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize, + 0, sizeof(uint32) * tile_xsize ); + } + + return (ok); +} + +/* vim: set ts=8 sts=8 sw=8 noet: */ +/* + * Local Variables: + * mode: c + * c-basic-offset: 8 + * fill-column: 78 + * End: + */ + |