Index: third_party/tiff_v403/tif_luv.c |
diff --git a/third_party/tiff_v403/tif_luv.c b/third_party/tiff_v403/tif_luv.c |
deleted file mode 100644 |
index 88f4ee85a0a7610cbbffed112e60487ffb02eeb1..0000000000000000000000000000000000000000 |
--- a/third_party/tiff_v403/tif_luv.c |
+++ /dev/null |
@@ -1,1685 +0,0 @@ |
-/* $Id: tif_luv.c,v 1.35 2011-04-02 20:54:09 bfriesen Exp $ */ |
- |
-/* |
- * Copyright (c) 1997 Greg Ward Larson |
- * Copyright (c) 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, Greg Larson 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, Greg Larson 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, GREG LARSON 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. |
- */ |
-#include "tiffiop.h" |
-#ifdef LOGLUV_SUPPORT |
- |
-/* |
- * TIFF Library. |
- * LogLuv compression support for high dynamic range images. |
- * |
- * Contributed by Greg Larson. |
- * |
- * LogLuv image support uses the TIFF library to store 16 or 10-bit |
- * log luminance values with 8 bits each of u and v or a 14-bit index. |
- * |
- * The codec can take as input and produce as output 32-bit IEEE float values |
- * as well as 16-bit integer values. A 16-bit luminance is interpreted |
- * as a sign bit followed by a 15-bit integer that is converted |
- * to and from a linear magnitude using the transformation: |
- * |
- * L = 2^( (Le+.5)/256 - 64 ) # real from 15-bit |
- * |
- * Le = floor( 256*(log2(L) + 64) ) # 15-bit from real |
- * |
- * The actual conversion to world luminance units in candelas per sq. meter |
- * requires an additional multiplier, which is stored in the TIFFTAG_STONITS. |
- * This value is usually set such that a reasonable exposure comes from |
- * clamping decoded luminances above 1 to 1 in the displayed image. |
- * |
- * The 16-bit values for u and v may be converted to real values by dividing |
- * each by 32768. (This allows for negative values, which aren't useful as |
- * far as we know, but are left in case of future improvements in human |
- * color vision.) |
- * |
- * Conversion from (u,v), which is actually the CIE (u',v') system for |
- * you color scientists, is accomplished by the following transformation: |
- * |
- * u = 4*x / (-2*x + 12*y + 3) |
- * v = 9*y / (-2*x + 12*y + 3) |
- * |
- * x = 9*u / (6*u - 16*v + 12) |
- * y = 4*v / (6*u - 16*v + 12) |
- * |
- * This process is greatly simplified by passing 32-bit IEEE floats |
- * for each of three CIE XYZ coordinates. The codec then takes care |
- * of conversion to and from LogLuv, though the application is still |
- * responsible for interpreting the TIFFTAG_STONITS calibration factor. |
- * |
- * By definition, a CIE XYZ vector of [1 1 1] corresponds to a neutral white |
- * point of (x,y)=(1/3,1/3). However, most color systems assume some other |
- * white point, such as D65, and an absolute color conversion to XYZ then |
- * to another color space with a different white point may introduce an |
- * unwanted color cast to the image. It is often desirable, therefore, to |
- * perform a white point conversion that maps the input white to [1 1 1] |
- * in XYZ, then record the original white point using the TIFFTAG_WHITEPOINT |
- * tag value. A decoder that demands absolute color calibration may use |
- * this white point tag to get back the original colors, but usually it |
- * will be ignored and the new white point will be used instead that |
- * matches the output color space. |
- * |
- * Pixel information is compressed into one of two basic encodings, depending |
- * on the setting of the compression tag, which is one of COMPRESSION_SGILOG |
- * or COMPRESSION_SGILOG24. For COMPRESSION_SGILOG, greyscale data is |
- * stored as: |
- * |
- * 1 15 |
- * |-+---------------| |
- * |
- * COMPRESSION_SGILOG color data is stored as: |
- * |
- * 1 15 8 8 |
- * |-+---------------|--------+--------| |
- * S Le ue ve |
- * |
- * For the 24-bit COMPRESSION_SGILOG24 color format, the data is stored as: |
- * |
- * 10 14 |
- * |----------|--------------| |
- * Le' Ce |
- * |
- * There is no sign bit in the 24-bit case, and the (u,v) chromaticity is |
- * encoded as an index for optimal color resolution. The 10 log bits are |
- * defined by the following conversions: |
- * |
- * L = 2^((Le'+.5)/64 - 12) # real from 10-bit |
- * |
- * Le' = floor( 64*(log2(L) + 12) ) # 10-bit from real |
- * |
- * The 10 bits of the smaller format may be converted into the 15 bits of |
- * the larger format by multiplying by 4 and adding 13314. Obviously, |
- * a smaller range of magnitudes is covered (about 5 orders of magnitude |
- * instead of 38), and the lack of a sign bit means that negative luminances |
- * are not allowed. (Well, they aren't allowed in the real world, either, |
- * but they are useful for certain types of image processing.) |
- * |
- * The desired user format is controlled by the setting the internal |
- * pseudo tag TIFFTAG_SGILOGDATAFMT to one of: |
- * SGILOGDATAFMT_FLOAT = IEEE 32-bit float XYZ values |
- * SGILOGDATAFMT_16BIT = 16-bit integer encodings of logL, u and v |
- * Raw data i/o is also possible using: |
- * SGILOGDATAFMT_RAW = 32-bit unsigned integer with encoded pixel |
- * In addition, the following decoding is provided for ease of display: |
- * SGILOGDATAFMT_8BIT = 8-bit default RGB gamma-corrected values |
- * |
- * For grayscale images, we provide the following data formats: |
- * SGILOGDATAFMT_FLOAT = IEEE 32-bit float Y values |
- * SGILOGDATAFMT_16BIT = 16-bit integer w/ encoded luminance |
- * SGILOGDATAFMT_8BIT = 8-bit gray monitor values |
- * |
- * Note that the COMPRESSION_SGILOG applies a simple run-length encoding |
- * scheme by separating the logL, u and v bytes for each row and applying |
- * a PackBits type of compression. Since the 24-bit encoding is not |
- * adaptive, the 32-bit color format takes less space in many cases. |
- * |
- * Further control is provided over the conversion from higher-resolution |
- * formats to final encoded values through the pseudo tag |
- * TIFFTAG_SGILOGENCODE: |
- * SGILOGENCODE_NODITHER = do not dither encoded values |
- * SGILOGENCODE_RANDITHER = apply random dithering during encoding |
- * |
- * The default value of this tag is SGILOGENCODE_NODITHER for |
- * COMPRESSION_SGILOG to maximize run-length encoding and |
- * SGILOGENCODE_RANDITHER for COMPRESSION_SGILOG24 to turn |
- * quantization errors into noise. |
- */ |
- |
-#include <stdio.h> |
-#include <stdlib.h> |
-#include <math.h> |
- |
-/* |
- * State block for each open TIFF |
- * file using LogLuv compression/decompression. |
- */ |
-typedef struct logLuvState LogLuvState; |
- |
-struct logLuvState { |
- int user_datafmt; /* user data format */ |
- int encode_meth; /* encoding method */ |
- int pixel_size; /* bytes per pixel */ |
- |
- uint8* tbuf; /* translation buffer */ |
- tmsize_t tbuflen; /* buffer length */ |
- void (*tfunc)(LogLuvState*, uint8*, tmsize_t); |
- |
- TIFFVSetMethod vgetparent; /* super-class method */ |
- TIFFVSetMethod vsetparent; /* super-class method */ |
-}; |
- |
-#define DecoderState(tif) ((LogLuvState*) (tif)->tif_data) |
-#define EncoderState(tif) ((LogLuvState*) (tif)->tif_data) |
- |
-#define SGILOGDATAFMT_UNKNOWN -1 |
- |
-#define MINRUN 4 /* minimum run length */ |
- |
-/* |
- * Decode a string of 16-bit gray pixels. |
- */ |
-static int |
-LogL16Decode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s) |
-{ |
- static const char module[] = "LogL16Decode"; |
- LogLuvState* sp = DecoderState(tif); |
- int shft; |
- tmsize_t i; |
- tmsize_t npixels; |
- unsigned char* bp; |
- int16* tp; |
- int16 b; |
- tmsize_t cc; |
- int rc; |
- |
- assert(s == 0); |
- assert(sp != NULL); |
- |
- npixels = occ / sp->pixel_size; |
- |
- if (sp->user_datafmt == SGILOGDATAFMT_16BIT) |
- tp = (int16*) op; |
- else { |
- assert(sp->tbuflen >= npixels); |
- tp = (int16*) sp->tbuf; |
- } |
- _TIFFmemset((void*) tp, 0, npixels*sizeof (tp[0])); |
- |
- bp = (unsigned char*) tif->tif_rawcp; |
- cc = tif->tif_rawcc; |
- /* get each byte string */ |
- for (shft = 2*8; (shft -= 8) >= 0; ) { |
- for (i = 0; i < npixels && cc > 0; ) |
- if (*bp >= 128) { /* run */ |
- rc = *bp++ + (2-128); /* TODO: potential input buffer overrun when decoding corrupt or truncated data */ |
- b = (int16)(*bp++ << shft); |
- cc -= 2; |
- while (rc-- && i < npixels) |
- tp[i++] |= b; |
- } else { /* non-run */ |
- rc = *bp++; /* nul is noop */ |
- while (--cc && rc-- && i < npixels) |
- tp[i++] |= (int16)*bp++ << shft; |
- } |
- if (i != npixels) { |
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__)) |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Not enough data at row %lu (short %I64d pixels)", |
- (unsigned long) tif->tif_row, |
- (unsigned __int64) (npixels - i)); |
-#else |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Not enough data at row %lu (short %llu pixels)", |
- (unsigned long) tif->tif_row, |
- (unsigned long long) (npixels - i)); |
-#endif |
- tif->tif_rawcp = (uint8*) bp; |
- tif->tif_rawcc = cc; |
- return (0); |
- } |
- } |
- (*sp->tfunc)(sp, op, npixels); |
- tif->tif_rawcp = (uint8*) bp; |
- tif->tif_rawcc = cc; |
- return (1); |
-} |
- |
-/* |
- * Decode a string of 24-bit pixels. |
- */ |
-static int |
-LogLuvDecode24(TIFF* tif, uint8* op, tmsize_t occ, uint16 s) |
-{ |
- static const char module[] = "LogLuvDecode24"; |
- LogLuvState* sp = DecoderState(tif); |
- tmsize_t cc; |
- tmsize_t i; |
- tmsize_t npixels; |
- unsigned char* bp; |
- uint32* tp; |
- |
- assert(s == 0); |
- assert(sp != NULL); |
- |
- npixels = occ / sp->pixel_size; |
- |
- if (sp->user_datafmt == SGILOGDATAFMT_RAW) |
- tp = (uint32 *)op; |
- else { |
- assert(sp->tbuflen >= npixels); |
- tp = (uint32 *) sp->tbuf; |
- } |
- /* copy to array of uint32 */ |
- bp = (unsigned char*) tif->tif_rawcp; |
- cc = tif->tif_rawcc; |
- for (i = 0; i < npixels && cc > 0; i++) { |
- tp[i] = bp[0] << 16 | bp[1] << 8 | bp[2]; |
- bp += 3; |
- cc -= 3; |
- } |
- tif->tif_rawcp = (uint8*) bp; |
- tif->tif_rawcc = cc; |
- if (i != npixels) { |
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__)) |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Not enough data at row %lu (short %I64d pixels)", |
- (unsigned long) tif->tif_row, |
- (unsigned __int64) (npixels - i)); |
-#else |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Not enough data at row %lu (short %llu pixels)", |
- (unsigned long) tif->tif_row, |
- (unsigned long long) (npixels - i)); |
-#endif |
- return (0); |
- } |
- (*sp->tfunc)(sp, op, npixels); |
- return (1); |
-} |
- |
-/* |
- * Decode a string of 32-bit pixels. |
- */ |
-static int |
-LogLuvDecode32(TIFF* tif, uint8* op, tmsize_t occ, uint16 s) |
-{ |
- static const char module[] = "LogLuvDecode32"; |
- LogLuvState* sp; |
- int shft; |
- tmsize_t i; |
- tmsize_t npixels; |
- unsigned char* bp; |
- uint32* tp; |
- uint32 b; |
- tmsize_t cc; |
- int rc; |
- |
- assert(s == 0); |
- sp = DecoderState(tif); |
- assert(sp != NULL); |
- |
- npixels = occ / sp->pixel_size; |
- |
- if (sp->user_datafmt == SGILOGDATAFMT_RAW) |
- tp = (uint32*) op; |
- else { |
- assert(sp->tbuflen >= npixels); |
- tp = (uint32*) sp->tbuf; |
- } |
- _TIFFmemset((void*) tp, 0, npixels*sizeof (tp[0])); |
- |
- bp = (unsigned char*) tif->tif_rawcp; |
- cc = tif->tif_rawcc; |
- /* get each byte string */ |
- for (shft = 4*8; (shft -= 8) >= 0; ) { |
- for (i = 0; i < npixels && cc > 0; ) |
- if (*bp >= 128) { /* run */ |
- rc = *bp++ + (2-128); |
- b = (uint32)*bp++ << shft; |
- cc -= 2; /* TODO: potential input buffer overrun when decoding corrupt or truncated data */ |
- while (rc-- && i < npixels) |
- tp[i++] |= b; |
- } else { /* non-run */ |
- rc = *bp++; /* nul is noop */ |
- while (--cc && rc-- && i < npixels) |
- tp[i++] |= (uint32)*bp++ << shft; |
- } |
- if (i != npixels) { |
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__)) |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Not enough data at row %lu (short %I64d pixels)", |
- (unsigned long) tif->tif_row, |
- (unsigned __int64) (npixels - i)); |
-#else |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Not enough data at row %lu (short %llu pixels)", |
- (unsigned long) tif->tif_row, |
- (unsigned long long) (npixels - i)); |
-#endif |
- tif->tif_rawcp = (uint8*) bp; |
- tif->tif_rawcc = cc; |
- return (0); |
- } |
- } |
- (*sp->tfunc)(sp, op, npixels); |
- tif->tif_rawcp = (uint8*) bp; |
- tif->tif_rawcc = cc; |
- return (1); |
-} |
- |
-/* |
- * Decode a strip of pixels. We break it into rows to |
- * maintain synchrony with the encode algorithm, which |
- * is row by row. |
- */ |
-static int |
-LogLuvDecodeStrip(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s) |
-{ |
- tmsize_t rowlen = TIFFScanlineSize(tif); |
- |
- assert(cc%rowlen == 0); |
- while (cc && (*tif->tif_decoderow)(tif, bp, rowlen, s)) |
- bp += rowlen, cc -= rowlen; |
- return (cc == 0); |
-} |
- |
-/* |
- * Decode a tile of pixels. We break it into rows to |
- * maintain synchrony with the encode algorithm, which |
- * is row by row. |
- */ |
-static int |
-LogLuvDecodeTile(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s) |
-{ |
- tmsize_t rowlen = TIFFTileRowSize(tif); |
- |
- assert(cc%rowlen == 0); |
- while (cc && (*tif->tif_decoderow)(tif, bp, rowlen, s)) |
- bp += rowlen, cc -= rowlen; |
- return (cc == 0); |
-} |
- |
-/* |
- * Encode a row of 16-bit pixels. |
- */ |
-static int |
-LogL16Encode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s) |
-{ |
- LogLuvState* sp = EncoderState(tif); |
- int shft; |
- tmsize_t i; |
- tmsize_t j; |
- tmsize_t npixels; |
- uint8* op; |
- int16* tp; |
- int16 b; |
- tmsize_t occ; |
- int rc=0, mask; |
- tmsize_t beg; |
- |
- assert(s == 0); |
- assert(sp != NULL); |
- npixels = cc / sp->pixel_size; |
- |
- if (sp->user_datafmt == SGILOGDATAFMT_16BIT) |
- tp = (int16*) bp; |
- else { |
- tp = (int16*) sp->tbuf; |
- assert(sp->tbuflen >= npixels); |
- (*sp->tfunc)(sp, bp, npixels); |
- } |
- /* compress each byte string */ |
- op = tif->tif_rawcp; |
- occ = tif->tif_rawdatasize - tif->tif_rawcc; |
- for (shft = 2*8; (shft -= 8) >= 0; ) |
- for (i = 0; i < npixels; i += rc) { |
- if (occ < 4) { |
- tif->tif_rawcp = op; |
- tif->tif_rawcc = tif->tif_rawdatasize - occ; |
- if (!TIFFFlushData1(tif)) |
- return (-1); |
- op = tif->tif_rawcp; |
- occ = tif->tif_rawdatasize - tif->tif_rawcc; |
- } |
- mask = 0xff << shft; /* find next run */ |
- for (beg = i; beg < npixels; beg += rc) { |
- b = (int16) (tp[beg] & mask); |
- rc = 1; |
- while (rc < 127+2 && beg+rc < npixels && |
- (tp[beg+rc] & mask) == b) |
- rc++; |
- if (rc >= MINRUN) |
- break; /* long enough */ |
- } |
- if (beg-i > 1 && beg-i < MINRUN) { |
- b = (int16) (tp[i] & mask);/*check short run */ |
- j = i+1; |
- while ((tp[j++] & mask) == b) |
- if (j == beg) { |
- *op++ = (uint8)(128-2+j-i); |
- *op++ = (uint8)(b >> shft); |
- occ -= 2; |
- i = beg; |
- break; |
- } |
- } |
- while (i < beg) { /* write out non-run */ |
- if ((j = beg-i) > 127) j = 127; |
- if (occ < j+3) { |
- tif->tif_rawcp = op; |
- tif->tif_rawcc = tif->tif_rawdatasize - occ; |
- if (!TIFFFlushData1(tif)) |
- return (-1); |
- op = tif->tif_rawcp; |
- occ = tif->tif_rawdatasize - tif->tif_rawcc; |
- } |
- *op++ = (uint8) j; occ--; |
- while (j--) { |
- *op++ = (uint8) (tp[i++] >> shft & 0xff); |
- occ--; |
- } |
- } |
- if (rc >= MINRUN) { /* write out run */ |
- *op++ = (uint8) (128-2+rc); |
- *op++ = (uint8) (tp[beg] >> shft & 0xff); |
- occ -= 2; |
- } else |
- rc = 0; |
- } |
- tif->tif_rawcp = op; |
- tif->tif_rawcc = tif->tif_rawdatasize - occ; |
- |
- return (1); |
-} |
- |
-/* |
- * Encode a row of 24-bit pixels. |
- */ |
-static int |
-LogLuvEncode24(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s) |
-{ |
- LogLuvState* sp = EncoderState(tif); |
- tmsize_t i; |
- tmsize_t npixels; |
- tmsize_t occ; |
- uint8* op; |
- uint32* tp; |
- |
- assert(s == 0); |
- assert(sp != NULL); |
- npixels = cc / sp->pixel_size; |
- |
- if (sp->user_datafmt == SGILOGDATAFMT_RAW) |
- tp = (uint32*) bp; |
- else { |
- tp = (uint32*) sp->tbuf; |
- assert(sp->tbuflen >= npixels); |
- (*sp->tfunc)(sp, bp, npixels); |
- } |
- /* write out encoded pixels */ |
- op = tif->tif_rawcp; |
- occ = tif->tif_rawdatasize - tif->tif_rawcc; |
- for (i = npixels; i--; ) { |
- if (occ < 3) { |
- tif->tif_rawcp = op; |
- tif->tif_rawcc = tif->tif_rawdatasize - occ; |
- if (!TIFFFlushData1(tif)) |
- return (-1); |
- op = tif->tif_rawcp; |
- occ = tif->tif_rawdatasize - tif->tif_rawcc; |
- } |
- *op++ = (uint8)(*tp >> 16); |
- *op++ = (uint8)(*tp >> 8 & 0xff); |
- *op++ = (uint8)(*tp++ & 0xff); |
- occ -= 3; |
- } |
- tif->tif_rawcp = op; |
- tif->tif_rawcc = tif->tif_rawdatasize - occ; |
- |
- return (1); |
-} |
- |
-/* |
- * Encode a row of 32-bit pixels. |
- */ |
-static int |
-LogLuvEncode32(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s) |
-{ |
- LogLuvState* sp = EncoderState(tif); |
- int shft; |
- tmsize_t i; |
- tmsize_t j; |
- tmsize_t npixels; |
- uint8* op; |
- uint32* tp; |
- uint32 b; |
- tmsize_t occ; |
- int rc=0, mask; |
- tmsize_t beg; |
- |
- assert(s == 0); |
- assert(sp != NULL); |
- |
- npixels = cc / sp->pixel_size; |
- |
- if (sp->user_datafmt == SGILOGDATAFMT_RAW) |
- tp = (uint32*) bp; |
- else { |
- tp = (uint32*) sp->tbuf; |
- assert(sp->tbuflen >= npixels); |
- (*sp->tfunc)(sp, bp, npixels); |
- } |
- /* compress each byte string */ |
- op = tif->tif_rawcp; |
- occ = tif->tif_rawdatasize - tif->tif_rawcc; |
- for (shft = 4*8; (shft -= 8) >= 0; ) |
- for (i = 0; i < npixels; i += rc) { |
- if (occ < 4) { |
- tif->tif_rawcp = op; |
- tif->tif_rawcc = tif->tif_rawdatasize - occ; |
- if (!TIFFFlushData1(tif)) |
- return (-1); |
- op = tif->tif_rawcp; |
- occ = tif->tif_rawdatasize - tif->tif_rawcc; |
- } |
- mask = 0xff << shft; /* find next run */ |
- for (beg = i; beg < npixels; beg += rc) { |
- b = tp[beg] & mask; |
- rc = 1; |
- while (rc < 127+2 && beg+rc < npixels && |
- (tp[beg+rc] & mask) == b) |
- rc++; |
- if (rc >= MINRUN) |
- break; /* long enough */ |
- } |
- if (beg-i > 1 && beg-i < MINRUN) { |
- b = tp[i] & mask; /* check short run */ |
- j = i+1; |
- while ((tp[j++] & mask) == b) |
- if (j == beg) { |
- *op++ = (uint8)(128-2+j-i); |
- *op++ = (uint8)(b >> shft); |
- occ -= 2; |
- i = beg; |
- break; |
- } |
- } |
- while (i < beg) { /* write out non-run */ |
- if ((j = beg-i) > 127) j = 127; |
- if (occ < j+3) { |
- tif->tif_rawcp = op; |
- tif->tif_rawcc = tif->tif_rawdatasize - occ; |
- if (!TIFFFlushData1(tif)) |
- return (-1); |
- op = tif->tif_rawcp; |
- occ = tif->tif_rawdatasize - tif->tif_rawcc; |
- } |
- *op++ = (uint8) j; occ--; |
- while (j--) { |
- *op++ = (uint8)(tp[i++] >> shft & 0xff); |
- occ--; |
- } |
- } |
- if (rc >= MINRUN) { /* write out run */ |
- *op++ = (uint8) (128-2+rc); |
- *op++ = (uint8)(tp[beg] >> shft & 0xff); |
- occ -= 2; |
- } else |
- rc = 0; |
- } |
- tif->tif_rawcp = op; |
- tif->tif_rawcc = tif->tif_rawdatasize - occ; |
- |
- return (1); |
-} |
- |
-/* |
- * Encode a strip of pixels. We break it into rows to |
- * avoid encoding runs across row boundaries. |
- */ |
-static int |
-LogLuvEncodeStrip(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s) |
-{ |
- tmsize_t rowlen = TIFFScanlineSize(tif); |
- |
- assert(cc%rowlen == 0); |
- while (cc && (*tif->tif_encoderow)(tif, bp, rowlen, s) == 1) |
- bp += rowlen, cc -= rowlen; |
- return (cc == 0); |
-} |
- |
-/* |
- * Encode a tile of pixels. We break it into rows to |
- * avoid encoding runs across row boundaries. |
- */ |
-static int |
-LogLuvEncodeTile(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s) |
-{ |
- tmsize_t rowlen = TIFFTileRowSize(tif); |
- |
- assert(cc%rowlen == 0); |
- while (cc && (*tif->tif_encoderow)(tif, bp, rowlen, s) == 1) |
- bp += rowlen, cc -= rowlen; |
- return (cc == 0); |
-} |
- |
-/* |
- * Encode/Decode functions for converting to and from user formats. |
- */ |
- |
-#include "uvcode.h" |
- |
-#ifndef UVSCALE |
-#define U_NEU 0.210526316 |
-#define V_NEU 0.473684211 |
-#define UVSCALE 410. |
-#endif |
- |
-#ifndef M_LN2 |
-#define M_LN2 0.69314718055994530942 |
-#endif |
-#ifndef M_PI |
-#define M_PI 3.14159265358979323846 |
-#endif |
-#ifndef log2 |
-#define log2(x) ((1./M_LN2)*log(x)) |
-#endif |
-#define exp2(x) exp(M_LN2*(x)) |
- |
-#define itrunc(x,m) ((m)==SGILOGENCODE_NODITHER ? \ |
- (int)(x) : \ |
- (int)((x) + rand()*(1./RAND_MAX) - .5)) |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-double |
-LogL16toY(int p16) /* compute luminance from 16-bit LogL */ |
-{ |
- int Le = p16 & 0x7fff; |
- double Y; |
- |
- if (!Le) |
- return (0.); |
- Y = exp(M_LN2/256.*(Le+.5) - M_LN2*64.); |
- return (!(p16 & 0x8000) ? Y : -Y); |
-} |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-int |
-LogL16fromY(double Y, int em) /* get 16-bit LogL from Y */ |
-{ |
- if (Y >= 1.8371976e19) |
- return (0x7fff); |
- if (Y <= -1.8371976e19) |
- return (0xffff); |
- if (Y > 5.4136769e-20) |
- return itrunc(256.*(log2(Y) + 64.), em); |
- if (Y < -5.4136769e-20) |
- return (~0x7fff | itrunc(256.*(log2(-Y) + 64.), em)); |
- return (0); |
-} |
- |
-static void |
-L16toY(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- int16* l16 = (int16*) sp->tbuf; |
- float* yp = (float*) op; |
- |
- while (n-- > 0) |
- *yp++ = (float)LogL16toY(*l16++); |
-} |
- |
-static void |
-L16toGry(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- int16* l16 = (int16*) sp->tbuf; |
- uint8* gp = (uint8*) op; |
- |
- while (n-- > 0) { |
- double Y = LogL16toY(*l16++); |
- *gp++ = (uint8) ((Y <= 0.) ? 0 : (Y >= 1.) ? 255 : (int)(256.*sqrt(Y))); |
- } |
-} |
- |
-static void |
-L16fromY(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- int16* l16 = (int16*) sp->tbuf; |
- float* yp = (float*) op; |
- |
- while (n-- > 0) |
- *l16++ = (int16) (LogL16fromY(*yp++, sp->encode_meth)); |
-} |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-void |
-XYZtoRGB24(float xyz[3], uint8 rgb[3]) |
-{ |
- double r, g, b; |
- /* assume CCIR-709 primaries */ |
- r = 2.690*xyz[0] + -1.276*xyz[1] + -0.414*xyz[2]; |
- g = -1.022*xyz[0] + 1.978*xyz[1] + 0.044*xyz[2]; |
- b = 0.061*xyz[0] + -0.224*xyz[1] + 1.163*xyz[2]; |
- /* assume 2.0 gamma for speed */ |
- /* could use integer sqrt approx., but this is probably faster */ |
- rgb[0] = (uint8)((r<=0.) ? 0 : (r >= 1.) ? 255 : (int)(256.*sqrt(r))); |
- rgb[1] = (uint8)((g<=0.) ? 0 : (g >= 1.) ? 255 : (int)(256.*sqrt(g))); |
- rgb[2] = (uint8)((b<=0.) ? 0 : (b >= 1.) ? 255 : (int)(256.*sqrt(b))); |
-} |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-double |
-LogL10toY(int p10) /* compute luminance from 10-bit LogL */ |
-{ |
- if (p10 == 0) |
- return (0.); |
- return (exp(M_LN2/64.*(p10+.5) - M_LN2*12.)); |
-} |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-int |
-LogL10fromY(double Y, int em) /* get 10-bit LogL from Y */ |
-{ |
- if (Y >= 15.742) |
- return (0x3ff); |
- else if (Y <= .00024283) |
- return (0); |
- else |
- return itrunc(64.*(log2(Y) + 12.), em); |
-} |
- |
-#define NANGLES 100 |
-#define uv2ang(u, v) ( (NANGLES*.499999999/M_PI) \ |
- * atan2((v)-V_NEU,(u)-U_NEU) + .5*NANGLES ) |
- |
-static int |
-oog_encode(double u, double v) /* encode out-of-gamut chroma */ |
-{ |
- static int oog_table[NANGLES]; |
- static int initialized = 0; |
- register int i; |
- |
- if (!initialized) { /* set up perimeter table */ |
- double eps[NANGLES], ua, va, ang, epsa; |
- int ui, vi, ustep; |
- for (i = NANGLES; i--; ) |
- eps[i] = 2.; |
- for (vi = UV_NVS; vi--; ) { |
- va = UV_VSTART + (vi+.5)*UV_SQSIZ; |
- ustep = uv_row[vi].nus-1; |
- if (vi == UV_NVS-1 || vi == 0 || ustep <= 0) |
- ustep = 1; |
- for (ui = uv_row[vi].nus-1; ui >= 0; ui -= ustep) { |
- ua = uv_row[vi].ustart + (ui+.5)*UV_SQSIZ; |
- ang = uv2ang(ua, va); |
- i = (int) ang; |
- epsa = fabs(ang - (i+.5)); |
- if (epsa < eps[i]) { |
- oog_table[i] = uv_row[vi].ncum + ui; |
- eps[i] = epsa; |
- } |
- } |
- } |
- for (i = NANGLES; i--; ) /* fill any holes */ |
- if (eps[i] > 1.5) { |
- int i1, i2; |
- for (i1 = 1; i1 < NANGLES/2; i1++) |
- if (eps[(i+i1)%NANGLES] < 1.5) |
- break; |
- for (i2 = 1; i2 < NANGLES/2; i2++) |
- if (eps[(i+NANGLES-i2)%NANGLES] < 1.5) |
- break; |
- if (i1 < i2) |
- oog_table[i] = |
- oog_table[(i+i1)%NANGLES]; |
- else |
- oog_table[i] = |
- oog_table[(i+NANGLES-i2)%NANGLES]; |
- } |
- initialized = 1; |
- } |
- i = (int) uv2ang(u, v); /* look up hue angle */ |
- return (oog_table[i]); |
-} |
- |
-#undef uv2ang |
-#undef NANGLES |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-int |
-uv_encode(double u, double v, int em) /* encode (u',v') coordinates */ |
-{ |
- register int vi, ui; |
- |
- if (v < UV_VSTART) |
- return oog_encode(u, v); |
- vi = itrunc((v - UV_VSTART)*(1./UV_SQSIZ), em); |
- if (vi >= UV_NVS) |
- return oog_encode(u, v); |
- if (u < uv_row[vi].ustart) |
- return oog_encode(u, v); |
- ui = itrunc((u - uv_row[vi].ustart)*(1./UV_SQSIZ), em); |
- if (ui >= uv_row[vi].nus) |
- return oog_encode(u, v); |
- |
- return (uv_row[vi].ncum + ui); |
-} |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-int |
-uv_decode(double *up, double *vp, int c) /* decode (u',v') index */ |
-{ |
- int upper, lower; |
- register int ui, vi; |
- |
- if (c < 0 || c >= UV_NDIVS) |
- return (-1); |
- lower = 0; /* binary search */ |
- upper = UV_NVS; |
- while (upper - lower > 1) { |
- vi = (lower + upper) >> 1; |
- ui = c - uv_row[vi].ncum; |
- if (ui > 0) |
- lower = vi; |
- else if (ui < 0) |
- upper = vi; |
- else { |
- lower = vi; |
- break; |
- } |
- } |
- vi = lower; |
- ui = c - uv_row[vi].ncum; |
- *up = uv_row[vi].ustart + (ui+.5)*UV_SQSIZ; |
- *vp = UV_VSTART + (vi+.5)*UV_SQSIZ; |
- return (0); |
-} |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-void |
-LogLuv24toXYZ(uint32 p, float XYZ[3]) |
-{ |
- int Ce; |
- double L, u, v, s, x, y; |
- /* decode luminance */ |
- L = LogL10toY(p>>14 & 0x3ff); |
- if (L <= 0.) { |
- XYZ[0] = XYZ[1] = XYZ[2] = 0.; |
- return; |
- } |
- /* decode color */ |
- Ce = p & 0x3fff; |
- if (uv_decode(&u, &v, Ce) < 0) { |
- u = U_NEU; v = V_NEU; |
- } |
- s = 1./(6.*u - 16.*v + 12.); |
- x = 9.*u * s; |
- y = 4.*v * s; |
- /* convert to XYZ */ |
- XYZ[0] = (float)(x/y * L); |
- XYZ[1] = (float)L; |
- XYZ[2] = (float)((1.-x-y)/y * L); |
-} |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-uint32 |
-LogLuv24fromXYZ(float XYZ[3], int em) |
-{ |
- int Le, Ce; |
- double u, v, s; |
- /* encode luminance */ |
- Le = LogL10fromY(XYZ[1], em); |
- /* encode color */ |
- s = XYZ[0] + 15.*XYZ[1] + 3.*XYZ[2]; |
- if (!Le || s <= 0.) { |
- u = U_NEU; |
- v = V_NEU; |
- } else { |
- u = 4.*XYZ[0] / s; |
- v = 9.*XYZ[1] / s; |
- } |
- Ce = uv_encode(u, v, em); |
- if (Ce < 0) /* never happens */ |
- Ce = uv_encode(U_NEU, V_NEU, SGILOGENCODE_NODITHER); |
- /* combine encodings */ |
- return (Le << 14 | Ce); |
-} |
- |
-static void |
-Luv24toXYZ(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- float* xyz = (float*) op; |
- |
- while (n-- > 0) { |
- LogLuv24toXYZ(*luv, xyz); |
- xyz += 3; |
- luv++; |
- } |
-} |
- |
-static void |
-Luv24toLuv48(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- int16* luv3 = (int16*) op; |
- |
- while (n-- > 0) { |
- double u, v; |
- |
- *luv3++ = (int16)((*luv >> 12 & 0xffd) + 13314); |
- if (uv_decode(&u, &v, *luv&0x3fff) < 0) { |
- u = U_NEU; |
- v = V_NEU; |
- } |
- *luv3++ = (int16)(u * (1L<<15)); |
- *luv3++ = (int16)(v * (1L<<15)); |
- luv++; |
- } |
-} |
- |
-static void |
-Luv24toRGB(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- uint8* rgb = (uint8*) op; |
- |
- while (n-- > 0) { |
- float xyz[3]; |
- |
- LogLuv24toXYZ(*luv++, xyz); |
- XYZtoRGB24(xyz, rgb); |
- rgb += 3; |
- } |
-} |
- |
-static void |
-Luv24fromXYZ(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- float* xyz = (float*) op; |
- |
- while (n-- > 0) { |
- *luv++ = LogLuv24fromXYZ(xyz, sp->encode_meth); |
- xyz += 3; |
- } |
-} |
- |
-static void |
-Luv24fromLuv48(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- int16* luv3 = (int16*) op; |
- |
- while (n-- > 0) { |
- int Le, Ce; |
- |
- if (luv3[0] <= 0) |
- Le = 0; |
- else if (luv3[0] >= (1<<12)+3314) |
- Le = (1<<10) - 1; |
- else if (sp->encode_meth == SGILOGENCODE_NODITHER) |
- Le = (luv3[0]-3314) >> 2; |
- else |
- Le = itrunc(.25*(luv3[0]-3314.), sp->encode_meth); |
- |
- Ce = uv_encode((luv3[1]+.5)/(1<<15), (luv3[2]+.5)/(1<<15), |
- sp->encode_meth); |
- if (Ce < 0) /* never happens */ |
- Ce = uv_encode(U_NEU, V_NEU, SGILOGENCODE_NODITHER); |
- *luv++ = (uint32)Le << 14 | Ce; |
- luv3 += 3; |
- } |
-} |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-void |
-LogLuv32toXYZ(uint32 p, float XYZ[3]) |
-{ |
- double L, u, v, s, x, y; |
- /* decode luminance */ |
- L = LogL16toY((int)p >> 16); |
- if (L <= 0.) { |
- XYZ[0] = XYZ[1] = XYZ[2] = 0.; |
- return; |
- } |
- /* decode color */ |
- u = 1./UVSCALE * ((p>>8 & 0xff) + .5); |
- v = 1./UVSCALE * ((p & 0xff) + .5); |
- s = 1./(6.*u - 16.*v + 12.); |
- x = 9.*u * s; |
- y = 4.*v * s; |
- /* convert to XYZ */ |
- XYZ[0] = (float)(x/y * L); |
- XYZ[1] = (float)L; |
- XYZ[2] = (float)((1.-x-y)/y * L); |
-} |
- |
-#if !LOGLUV_PUBLIC |
-static |
-#endif |
-uint32 |
-LogLuv32fromXYZ(float XYZ[3], int em) |
-{ |
- unsigned int Le, ue, ve; |
- double u, v, s; |
- /* encode luminance */ |
- Le = (unsigned int)LogL16fromY(XYZ[1], em); |
- /* encode color */ |
- s = XYZ[0] + 15.*XYZ[1] + 3.*XYZ[2]; |
- if (!Le || s <= 0.) { |
- u = U_NEU; |
- v = V_NEU; |
- } else { |
- u = 4.*XYZ[0] / s; |
- v = 9.*XYZ[1] / s; |
- } |
- if (u <= 0.) ue = 0; |
- else ue = itrunc(UVSCALE*u, em); |
- if (ue > 255) ue = 255; |
- if (v <= 0.) ve = 0; |
- else ve = itrunc(UVSCALE*v, em); |
- if (ve > 255) ve = 255; |
- /* combine encodings */ |
- return (Le << 16 | ue << 8 | ve); |
-} |
- |
-static void |
-Luv32toXYZ(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- float* xyz = (float*) op; |
- |
- while (n-- > 0) { |
- LogLuv32toXYZ(*luv++, xyz); |
- xyz += 3; |
- } |
-} |
- |
-static void |
-Luv32toLuv48(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- int16* luv3 = (int16*) op; |
- |
- while (n-- > 0) { |
- double u, v; |
- |
- *luv3++ = (int16)(*luv >> 16); |
- u = 1./UVSCALE * ((*luv>>8 & 0xff) + .5); |
- v = 1./UVSCALE * ((*luv & 0xff) + .5); |
- *luv3++ = (int16)(u * (1L<<15)); |
- *luv3++ = (int16)(v * (1L<<15)); |
- luv++; |
- } |
-} |
- |
-static void |
-Luv32toRGB(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- uint8* rgb = (uint8*) op; |
- |
- while (n-- > 0) { |
- float xyz[3]; |
- |
- LogLuv32toXYZ(*luv++, xyz); |
- XYZtoRGB24(xyz, rgb); |
- rgb += 3; |
- } |
-} |
- |
-static void |
-Luv32fromXYZ(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- float* xyz = (float*) op; |
- |
- while (n-- > 0) { |
- *luv++ = LogLuv32fromXYZ(xyz, sp->encode_meth); |
- xyz += 3; |
- } |
-} |
- |
-static void |
-Luv32fromLuv48(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- uint32* luv = (uint32*) sp->tbuf; |
- int16* luv3 = (int16*) op; |
- |
- if (sp->encode_meth == SGILOGENCODE_NODITHER) { |
- while (n-- > 0) { |
- *luv++ = (uint32)luv3[0] << 16 | |
- (luv3[1]*(uint32)(UVSCALE+.5) >> 7 & 0xff00) | |
- (luv3[2]*(uint32)(UVSCALE+.5) >> 15 & 0xff); |
- luv3 += 3; |
- } |
- return; |
- } |
- while (n-- > 0) { |
- *luv++ = (uint32)luv3[0] << 16 | |
- (itrunc(luv3[1]*(UVSCALE/(1<<15)), sp->encode_meth) << 8 & 0xff00) | |
- (itrunc(luv3[2]*(UVSCALE/(1<<15)), sp->encode_meth) & 0xff); |
- luv3 += 3; |
- } |
-} |
- |
-static void |
-_logLuvNop(LogLuvState* sp, uint8* op, tmsize_t n) |
-{ |
- (void) sp; (void) op; (void) n; |
-} |
- |
-static int |
-LogL16GuessDataFmt(TIFFDirectory *td) |
-{ |
-#define PACK(s,b,f) (((b)<<6)|((s)<<3)|(f)) |
- switch (PACK(td->td_samplesperpixel, td->td_bitspersample, td->td_sampleformat)) { |
- case PACK(1, 32, SAMPLEFORMAT_IEEEFP): |
- return (SGILOGDATAFMT_FLOAT); |
- case PACK(1, 16, SAMPLEFORMAT_VOID): |
- case PACK(1, 16, SAMPLEFORMAT_INT): |
- case PACK(1, 16, SAMPLEFORMAT_UINT): |
- return (SGILOGDATAFMT_16BIT); |
- case PACK(1, 8, SAMPLEFORMAT_VOID): |
- case PACK(1, 8, SAMPLEFORMAT_UINT): |
- return (SGILOGDATAFMT_8BIT); |
- } |
-#undef PACK |
- return (SGILOGDATAFMT_UNKNOWN); |
-} |
- |
-static tmsize_t |
-multiply_ms(tmsize_t m1, tmsize_t m2) |
-{ |
- tmsize_t bytes = m1 * m2; |
- |
- if (m1 && bytes / m1 != m2) |
- bytes = 0; |
- |
- return bytes; |
-} |
- |
-static int |
-LogL16InitState(TIFF* tif) |
-{ |
- static const char module[] = "LogL16InitState"; |
- TIFFDirectory *td = &tif->tif_dir; |
- LogLuvState* sp = DecoderState(tif); |
- |
- assert(sp != NULL); |
- assert(td->td_photometric == PHOTOMETRIC_LOGL); |
- |
- /* for some reason, we can't do this in TIFFInitLogL16 */ |
- if (sp->user_datafmt == SGILOGDATAFMT_UNKNOWN) |
- sp->user_datafmt = LogL16GuessDataFmt(td); |
- switch (sp->user_datafmt) { |
- case SGILOGDATAFMT_FLOAT: |
- sp->pixel_size = sizeof (float); |
- break; |
- case SGILOGDATAFMT_16BIT: |
- sp->pixel_size = sizeof (int16); |
- break; |
- case SGILOGDATAFMT_8BIT: |
- sp->pixel_size = sizeof (uint8); |
- break; |
- default: |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "No support for converting user data format to LogL"); |
- return (0); |
- } |
- if( isTiled(tif) ) |
- sp->tbuflen = multiply_ms(td->td_tilewidth, td->td_tilelength); |
- else |
- sp->tbuflen = multiply_ms(td->td_imagewidth, td->td_rowsperstrip); |
- if (multiply_ms(sp->tbuflen, sizeof (int16)) == 0 || |
- (sp->tbuf = (uint8*) _TIFFmalloc(sp->tbuflen * sizeof (int16))) == NULL) { |
- TIFFErrorExt(tif->tif_clientdata, module, "No space for SGILog translation buffer"); |
- return (0); |
- } |
- return (1); |
-} |
- |
-static int |
-LogLuvGuessDataFmt(TIFFDirectory *td) |
-{ |
- int guess; |
- |
- /* |
- * If the user didn't tell us their datafmt, |
- * take our best guess from the bitspersample. |
- */ |
-#define PACK(a,b) (((a)<<3)|(b)) |
- switch (PACK(td->td_bitspersample, td->td_sampleformat)) { |
- case PACK(32, SAMPLEFORMAT_IEEEFP): |
- guess = SGILOGDATAFMT_FLOAT; |
- break; |
- case PACK(32, SAMPLEFORMAT_VOID): |
- case PACK(32, SAMPLEFORMAT_UINT): |
- case PACK(32, SAMPLEFORMAT_INT): |
- guess = SGILOGDATAFMT_RAW; |
- break; |
- case PACK(16, SAMPLEFORMAT_VOID): |
- case PACK(16, SAMPLEFORMAT_INT): |
- case PACK(16, SAMPLEFORMAT_UINT): |
- guess = SGILOGDATAFMT_16BIT; |
- break; |
- case PACK( 8, SAMPLEFORMAT_VOID): |
- case PACK( 8, SAMPLEFORMAT_UINT): |
- guess = SGILOGDATAFMT_8BIT; |
- break; |
- default: |
- guess = SGILOGDATAFMT_UNKNOWN; |
- break; |
-#undef PACK |
- } |
- /* |
- * Double-check samples per pixel. |
- */ |
- switch (td->td_samplesperpixel) { |
- case 1: |
- if (guess != SGILOGDATAFMT_RAW) |
- guess = SGILOGDATAFMT_UNKNOWN; |
- break; |
- case 3: |
- if (guess == SGILOGDATAFMT_RAW) |
- guess = SGILOGDATAFMT_UNKNOWN; |
- break; |
- default: |
- guess = SGILOGDATAFMT_UNKNOWN; |
- break; |
- } |
- return (guess); |
-} |
- |
-static int |
-LogLuvInitState(TIFF* tif) |
-{ |
- static const char module[] = "LogLuvInitState"; |
- TIFFDirectory* td = &tif->tif_dir; |
- LogLuvState* sp = DecoderState(tif); |
- |
- assert(sp != NULL); |
- assert(td->td_photometric == PHOTOMETRIC_LOGLUV); |
- |
- /* for some reason, we can't do this in TIFFInitLogLuv */ |
- if (td->td_planarconfig != PLANARCONFIG_CONTIG) { |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "SGILog compression cannot handle non-contiguous data"); |
- return (0); |
- } |
- if (sp->user_datafmt == SGILOGDATAFMT_UNKNOWN) |
- sp->user_datafmt = LogLuvGuessDataFmt(td); |
- switch (sp->user_datafmt) { |
- case SGILOGDATAFMT_FLOAT: |
- sp->pixel_size = 3*sizeof (float); |
- break; |
- case SGILOGDATAFMT_16BIT: |
- sp->pixel_size = 3*sizeof (int16); |
- break; |
- case SGILOGDATAFMT_RAW: |
- sp->pixel_size = sizeof (uint32); |
- break; |
- case SGILOGDATAFMT_8BIT: |
- sp->pixel_size = 3*sizeof (uint8); |
- break; |
- default: |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "No support for converting user data format to LogLuv"); |
- return (0); |
- } |
- if( isTiled(tif) ) |
- sp->tbuflen = multiply_ms(td->td_tilewidth, td->td_tilelength); |
- else |
- sp->tbuflen = multiply_ms(td->td_imagewidth, td->td_rowsperstrip); |
- if (multiply_ms(sp->tbuflen, sizeof (uint32)) == 0 || |
- (sp->tbuf = (uint8*) _TIFFmalloc(sp->tbuflen * sizeof (uint32))) == NULL) { |
- TIFFErrorExt(tif->tif_clientdata, module, "No space for SGILog translation buffer"); |
- return (0); |
- } |
- return (1); |
-} |
- |
-static int |
-LogLuvFixupTags(TIFF* tif) |
-{ |
- (void) tif; |
- return (1); |
-} |
- |
-static int |
-LogLuvSetupDecode(TIFF* tif) |
-{ |
- static const char module[] = "LogLuvSetupDecode"; |
- LogLuvState* sp = DecoderState(tif); |
- TIFFDirectory* td = &tif->tif_dir; |
- |
- tif->tif_postdecode = _TIFFNoPostDecode; |
- switch (td->td_photometric) { |
- case PHOTOMETRIC_LOGLUV: |
- if (!LogLuvInitState(tif)) |
- break; |
- if (td->td_compression == COMPRESSION_SGILOG24) { |
- tif->tif_decoderow = LogLuvDecode24; |
- switch (sp->user_datafmt) { |
- case SGILOGDATAFMT_FLOAT: |
- sp->tfunc = Luv24toXYZ; |
- break; |
- case SGILOGDATAFMT_16BIT: |
- sp->tfunc = Luv24toLuv48; |
- break; |
- case SGILOGDATAFMT_8BIT: |
- sp->tfunc = Luv24toRGB; |
- break; |
- } |
- } else { |
- tif->tif_decoderow = LogLuvDecode32; |
- switch (sp->user_datafmt) { |
- case SGILOGDATAFMT_FLOAT: |
- sp->tfunc = Luv32toXYZ; |
- break; |
- case SGILOGDATAFMT_16BIT: |
- sp->tfunc = Luv32toLuv48; |
- break; |
- case SGILOGDATAFMT_8BIT: |
- sp->tfunc = Luv32toRGB; |
- break; |
- } |
- } |
- return (1); |
- case PHOTOMETRIC_LOGL: |
- if (!LogL16InitState(tif)) |
- break; |
- tif->tif_decoderow = LogL16Decode; |
- switch (sp->user_datafmt) { |
- case SGILOGDATAFMT_FLOAT: |
- sp->tfunc = L16toY; |
- break; |
- case SGILOGDATAFMT_8BIT: |
- sp->tfunc = L16toGry; |
- break; |
- } |
- return (1); |
- default: |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Inappropriate photometric interpretation %d for SGILog compression; %s", |
- td->td_photometric, "must be either LogLUV or LogL"); |
- break; |
- } |
- return (0); |
-} |
- |
-static int |
-LogLuvSetupEncode(TIFF* tif) |
-{ |
- static const char module[] = "LogLuvSetupEncode"; |
- LogLuvState* sp = EncoderState(tif); |
- TIFFDirectory* td = &tif->tif_dir; |
- |
- switch (td->td_photometric) { |
- case PHOTOMETRIC_LOGLUV: |
- if (!LogLuvInitState(tif)) |
- break; |
- if (td->td_compression == COMPRESSION_SGILOG24) { |
- tif->tif_encoderow = LogLuvEncode24; |
- switch (sp->user_datafmt) { |
- case SGILOGDATAFMT_FLOAT: |
- sp->tfunc = Luv24fromXYZ; |
- break; |
- case SGILOGDATAFMT_16BIT: |
- sp->tfunc = Luv24fromLuv48; |
- break; |
- case SGILOGDATAFMT_RAW: |
- break; |
- default: |
- goto notsupported; |
- } |
- } else { |
- tif->tif_encoderow = LogLuvEncode32; |
- switch (sp->user_datafmt) { |
- case SGILOGDATAFMT_FLOAT: |
- sp->tfunc = Luv32fromXYZ; |
- break; |
- case SGILOGDATAFMT_16BIT: |
- sp->tfunc = Luv32fromLuv48; |
- break; |
- case SGILOGDATAFMT_RAW: |
- break; |
- default: |
- goto notsupported; |
- } |
- } |
- break; |
- case PHOTOMETRIC_LOGL: |
- if (!LogL16InitState(tif)) |
- break; |
- tif->tif_encoderow = LogL16Encode; |
- switch (sp->user_datafmt) { |
- case SGILOGDATAFMT_FLOAT: |
- sp->tfunc = L16fromY; |
- break; |
- case SGILOGDATAFMT_16BIT: |
- break; |
- default: |
- goto notsupported; |
- } |
- break; |
- default: |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Inappropriate photometric interpretation %d for SGILog compression; %s", |
- td->td_photometric, "must be either LogLUV or LogL"); |
- break; |
- } |
- return (1); |
-notsupported: |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "SGILog compression supported only for %s, or raw data", |
- td->td_photometric == PHOTOMETRIC_LOGL ? "Y, L" : "XYZ, Luv"); |
- return (0); |
-} |
- |
-static void |
-LogLuvClose(TIFF* tif) |
-{ |
- TIFFDirectory *td = &tif->tif_dir; |
- |
- /* |
- * For consistency, we always want to write out the same |
- * bitspersample and sampleformat for our TIFF file, |
- * regardless of the data format being used by the application. |
- * Since this routine is called after tags have been set but |
- * before they have been recorded in the file, we reset them here. |
- */ |
- td->td_samplesperpixel = |
- (td->td_photometric == PHOTOMETRIC_LOGL) ? 1 : 3; |
- td->td_bitspersample = 16; |
- td->td_sampleformat = SAMPLEFORMAT_INT; |
-} |
- |
-static void |
-LogLuvCleanup(TIFF* tif) |
-{ |
- LogLuvState* sp = (LogLuvState *)tif->tif_data; |
- |
- assert(sp != 0); |
- |
- tif->tif_tagmethods.vgetfield = sp->vgetparent; |
- tif->tif_tagmethods.vsetfield = sp->vsetparent; |
- |
- if (sp->tbuf) |
- _TIFFfree(sp->tbuf); |
- _TIFFfree(sp); |
- tif->tif_data = NULL; |
- |
- _TIFFSetDefaultCompressionState(tif); |
-} |
- |
-static int |
-LogLuvVSetField(TIFF* tif, uint32 tag, va_list ap) |
-{ |
- static const char module[] = "LogLuvVSetField"; |
- LogLuvState* sp = DecoderState(tif); |
- int bps, fmt; |
- |
- switch (tag) { |
- case TIFFTAG_SGILOGDATAFMT: |
- sp->user_datafmt = (int) va_arg(ap, int); |
- /* |
- * Tweak the TIFF header so that the rest of libtiff knows what |
- * size of data will be passed between app and library, and |
- * assume that the app knows what it is doing and is not |
- * confused by these header manipulations... |
- */ |
- switch (sp->user_datafmt) { |
- case SGILOGDATAFMT_FLOAT: |
- bps = 32, fmt = SAMPLEFORMAT_IEEEFP; |
- break; |
- case SGILOGDATAFMT_16BIT: |
- bps = 16, fmt = SAMPLEFORMAT_INT; |
- break; |
- case SGILOGDATAFMT_RAW: |
- bps = 32, fmt = SAMPLEFORMAT_UINT; |
- TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 1); |
- break; |
- case SGILOGDATAFMT_8BIT: |
- bps = 8, fmt = SAMPLEFORMAT_UINT; |
- break; |
- default: |
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name, |
- "Unknown data format %d for LogLuv compression", |
- sp->user_datafmt); |
- return (0); |
- } |
- TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps); |
- TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, fmt); |
- /* |
- * Must recalculate sizes should bits/sample change. |
- */ |
- tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tmsize_t) -1; |
- tif->tif_scanlinesize = TIFFScanlineSize(tif); |
- return (1); |
- case TIFFTAG_SGILOGENCODE: |
- sp->encode_meth = (int) va_arg(ap, int); |
- if (sp->encode_meth != SGILOGENCODE_NODITHER && |
- sp->encode_meth != SGILOGENCODE_RANDITHER) { |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Unknown encoding %d for LogLuv compression", |
- sp->encode_meth); |
- return (0); |
- } |
- return (1); |
- default: |
- return (*sp->vsetparent)(tif, tag, ap); |
- } |
-} |
- |
-static int |
-LogLuvVGetField(TIFF* tif, uint32 tag, va_list ap) |
-{ |
- LogLuvState *sp = (LogLuvState *)tif->tif_data; |
- |
- switch (tag) { |
- case TIFFTAG_SGILOGDATAFMT: |
- *va_arg(ap, int*) = sp->user_datafmt; |
- return (1); |
- default: |
- return (*sp->vgetparent)(tif, tag, ap); |
- } |
-} |
- |
-static const TIFFField LogLuvFields[] = { |
- { TIFFTAG_SGILOGDATAFMT, 0, 0, TIFF_SHORT, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "SGILogDataFmt", NULL}, |
- { TIFFTAG_SGILOGENCODE, 0, 0, TIFF_SHORT, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "SGILogEncode", NULL} |
-}; |
- |
-int |
-TIFFInitSGILog(TIFF* tif, int scheme) |
-{ |
- static const char module[] = "TIFFInitSGILog"; |
- LogLuvState* sp; |
- |
- assert(scheme == COMPRESSION_SGILOG24 || scheme == COMPRESSION_SGILOG); |
- |
- /* |
- * Merge codec-specific tag information. |
- */ |
- if (!_TIFFMergeFields(tif, LogLuvFields, |
- TIFFArrayCount(LogLuvFields))) { |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Merging SGILog codec-specific tags failed"); |
- return 0; |
- } |
- |
- /* |
- * Allocate state block so tag methods have storage to record values. |
- */ |
- tif->tif_data = (uint8*) _TIFFmalloc(sizeof (LogLuvState)); |
- if (tif->tif_data == NULL) |
- goto bad; |
- sp = (LogLuvState*) tif->tif_data; |
- _TIFFmemset((void*)sp, 0, sizeof (*sp)); |
- sp->user_datafmt = SGILOGDATAFMT_UNKNOWN; |
- sp->encode_meth = (scheme == COMPRESSION_SGILOG24) ? |
- SGILOGENCODE_RANDITHER : SGILOGENCODE_NODITHER; |
- sp->tfunc = _logLuvNop; |
- |
- /* |
- * Install codec methods. |
- * NB: tif_decoderow & tif_encoderow are filled |
- * in at setup time. |
- */ |
- tif->tif_fixuptags = LogLuvFixupTags; |
- tif->tif_setupdecode = LogLuvSetupDecode; |
- tif->tif_decodestrip = LogLuvDecodeStrip; |
- tif->tif_decodetile = LogLuvDecodeTile; |
- tif->tif_setupencode = LogLuvSetupEncode; |
- tif->tif_encodestrip = LogLuvEncodeStrip; |
- tif->tif_encodetile = LogLuvEncodeTile; |
- tif->tif_close = LogLuvClose; |
- tif->tif_cleanup = LogLuvCleanup; |
- |
- /* |
- * Override parent get/set field methods. |
- */ |
- sp->vgetparent = tif->tif_tagmethods.vgetfield; |
- tif->tif_tagmethods.vgetfield = LogLuvVGetField; /* hook for codec tags */ |
- sp->vsetparent = tif->tif_tagmethods.vsetfield; |
- tif->tif_tagmethods.vsetfield = LogLuvVSetField; /* hook for codec tags */ |
- |
- return (1); |
-bad: |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "%s: No space for LogLuv state block", tif->tif_name); |
- return (0); |
-} |
-#endif /* LOGLUV_SUPPORT */ |
- |
-/* vim: set ts=8 sts=8 sw=8 noet: */ |
-/* |
- * Local Variables: |
- * mode: c |
- * c-basic-offset: 8 |
- * fill-column: 78 |
- * End: |
- */ |
- |