diff options
Diffstat (limited to 'src/3rdparty/libtiff/libtiff/tif_jbig.c')
-rw-r--r-- | src/3rdparty/libtiff/libtiff/tif_jbig.c | 334 |
1 files changed, 161 insertions, 173 deletions
diff --git a/src/3rdparty/libtiff/libtiff/tif_jbig.c b/src/3rdparty/libtiff/libtiff/tif_jbig.c index 8bfa4ce..7e455ad 100644 --- a/src/3rdparty/libtiff/libtiff/tif_jbig.c +++ b/src/3rdparty/libtiff/libtiff/tif_jbig.c @@ -35,209 +35,197 @@ #ifdef JBIG_SUPPORT #include "jbig.h" -static int JBIGSetupDecode(TIFF* tif) +static int JBIGSetupDecode(TIFF *tif) { - if (TIFFNumberOfStrips(tif) != 1) - { - TIFFErrorExt(tif->tif_clientdata, "JBIG", "Multistrip images not supported in decoder"); - return 0; - } - - return 1; + if (TIFFNumberOfStrips(tif) != 1) + { + TIFFErrorExtR(tif, "JBIG", + "Multistrip images not supported in decoder"); + return 0; + } + + return 1; } -static int JBIGDecode(TIFF* tif, uint8_t* buffer, tmsize_t size, uint16_t s) +static int JBIGDecode(TIFF *tif, uint8_t *buffer, tmsize_t size, uint16_t s) { - struct jbg_dec_state decoder; - int decodeStatus = 0; - unsigned char* pImage = NULL; - unsigned long decodedSize; - (void) s; + struct jbg_dec_state decoder; + int decodeStatus = 0; + unsigned char *pImage = NULL; + unsigned long decodedSize; + (void)s; - if (isFillOrder(tif, tif->tif_dir.td_fillorder)) - { - TIFFReverseBits(tif->tif_rawcp, tif->tif_rawcc); - } + if (isFillOrder(tif, tif->tif_dir.td_fillorder)) + { + TIFFReverseBits(tif->tif_rawcp, tif->tif_rawcc); + } - jbg_dec_init(&decoder); + jbg_dec_init(&decoder); #if defined(HAVE_JBG_NEWLEN) - jbg_newlen(tif->tif_rawcp, (size_t)tif->tif_rawcc); - /* - * I do not check the return status of jbg_newlen because even if this - * function fails it does not necessarily mean that decoding the image - * will fail. It is generally only needed for received fax images - * that do not contain the actual length of the image in the BIE - * header. I do not log when an error occurs because that will cause - * problems when converting JBIG encoded TIFF's to - * PostScript. As long as the actual image length is contained in the - * BIE header jbg_dec_in should succeed. - */ + jbg_newlen(tif->tif_rawcp, (size_t)tif->tif_rawcc); + /* + * I do not check the return status of jbg_newlen because even if this + * function fails it does not necessarily mean that decoding the image + * will fail. It is generally only needed for received fax images + * that do not contain the actual length of the image in the BIE + * header. I do not log when an error occurs because that will cause + * problems when converting JBIG encoded TIFF's to + * PostScript. As long as the actual image length is contained in the + * BIE header jbg_dec_in should succeed. + */ #endif /* HAVE_JBG_NEWLEN */ - decodeStatus = jbg_dec_in(&decoder, (unsigned char*)tif->tif_rawcp, - (size_t)tif->tif_rawcc, NULL); - if (JBG_EOK != decodeStatus) - { - /* - * XXX: JBG_EN constant was defined in pre-2.0 releases of the - * JBIG-KIT. Since the 2.0 the error reporting functions were - * changed. We will handle both cases here. - */ - TIFFErrorExt(tif->tif_clientdata, - "JBIG", "Error (%d) decoding: %s", - decodeStatus, + decodeStatus = jbg_dec_in(&decoder, (unsigned char *)tif->tif_rawcp, + (size_t)tif->tif_rawcc, NULL); + if (JBG_EOK != decodeStatus) + { + /* + * XXX: JBG_EN constant was defined in pre-2.0 releases of the + * JBIG-KIT. Since the 2.0 the error reporting functions were + * changed. We will handle both cases here. + */ + TIFFErrorExtR(tif, "JBIG", "Error (%d) decoding: %s", decodeStatus, #if defined(JBG_EN) - jbg_strerror(decodeStatus, JBG_EN) + jbg_strerror(decodeStatus, JBG_EN) #else - jbg_strerror(decodeStatus) + jbg_strerror(decodeStatus) #endif - ); - jbg_dec_free(&decoder); - return 0; - } - - decodedSize = jbg_dec_getsize(&decoder); - if( (tmsize_t)decodedSize < size ) - { - TIFFWarningExt(tif->tif_clientdata, "JBIG", - "Only decoded %lu bytes, whereas %"TIFF_SSIZE_FORMAT" requested", - decodedSize, size); - } - else if( (tmsize_t)decodedSize > size ) - { - TIFFErrorExt(tif->tif_clientdata, "JBIG", - "Decoded %lu bytes, whereas %"TIFF_SSIZE_FORMAT" were requested", - decodedSize, size); - jbg_dec_free(&decoder); - return 0; - } - pImage = jbg_dec_getimage(&decoder, 0); - _TIFFmemcpy(buffer, pImage, decodedSize); - jbg_dec_free(&decoder); - - tif->tif_rawcp += tif->tif_rawcc; - tif->tif_rawcc = 0; - - return 1; + ); + jbg_dec_free(&decoder); + return 0; + } + + decodedSize = jbg_dec_getsize(&decoder); + if ((tmsize_t)decodedSize < size) + { + TIFFWarningExtR(tif, "JBIG", + "Only decoded %lu bytes, whereas %" TIFF_SSIZE_FORMAT + " requested", + decodedSize, size); + } + else if ((tmsize_t)decodedSize > size) + { + TIFFErrorExtR(tif, "JBIG", + "Decoded %lu bytes, whereas %" TIFF_SSIZE_FORMAT + " were requested", + decodedSize, size); + jbg_dec_free(&decoder); + return 0; + } + pImage = jbg_dec_getimage(&decoder, 0); + _TIFFmemcpy(buffer, pImage, decodedSize); + jbg_dec_free(&decoder); + + tif->tif_rawcp += tif->tif_rawcc; + tif->tif_rawcc = 0; + + return 1; } -static int JBIGSetupEncode(TIFF* tif) +static int JBIGSetupEncode(TIFF *tif) { - if (TIFFNumberOfStrips(tif) != 1) - { - TIFFErrorExt(tif->tif_clientdata, "JBIG", "Multistrip images not supported in encoder"); - return 0; - } - - return 1; + if (TIFFNumberOfStrips(tif) != 1) + { + TIFFErrorExtR(tif, "JBIG", + "Multistrip images not supported in encoder"); + return 0; + } + + return 1; } -static int JBIGCopyEncodedData(TIFF* tif, unsigned char* pp, size_t cc, uint16_t s) +static int JBIGCopyEncodedData(TIFF *tif, unsigned char *pp, size_t cc, + uint16_t s) { - (void) s; - while (cc > 0) - { - tmsize_t n = (tmsize_t)cc; - - if (tif->tif_rawcc + n > tif->tif_rawdatasize) - { - n = tif->tif_rawdatasize - tif->tif_rawcc; - } - - assert(n > 0); - _TIFFmemcpy(tif->tif_rawcp, pp, n); - tif->tif_rawcp += n; - tif->tif_rawcc += n; - pp += n; - cc -= (size_t)n; - if (tif->tif_rawcc >= tif->tif_rawdatasize && - !TIFFFlushData1(tif)) - { - return (-1); - } - } - - return (1); + (void)s; + while (cc > 0) + { + tmsize_t n = (tmsize_t)cc; + + if (tif->tif_rawcc + n > tif->tif_rawdatasize) + { + n = tif->tif_rawdatasize - tif->tif_rawcc; + } + + assert(n > 0); + _TIFFmemcpy(tif->tif_rawcp, pp, n); + tif->tif_rawcp += n; + tif->tif_rawcc += n; + pp += n; + cc -= (size_t)n; + if (tif->tif_rawcc >= tif->tif_rawdatasize && !TIFFFlushData1(tif)) + { + return (-1); + } + } + + return (1); } -static void JBIGOutputBie(unsigned char* buffer, size_t len, void* userData) +static void JBIGOutputBie(unsigned char *buffer, size_t len, void *userData) { - TIFF* tif = (TIFF*)userData; + TIFF *tif = (TIFF *)userData; - if (isFillOrder(tif, tif->tif_dir.td_fillorder)) - { - TIFFReverseBits(buffer, (tmsize_t)len); - } + if (isFillOrder(tif, tif->tif_dir.td_fillorder)) + { + TIFFReverseBits(buffer, (tmsize_t)len); + } - JBIGCopyEncodedData(tif, buffer, len, 0); + JBIGCopyEncodedData(tif, buffer, len, 0); } -static int JBIGEncode(TIFF* tif, uint8_t* buffer, tmsize_t size, uint16_t s) +static int JBIGEncode(TIFF *tif, uint8_t *buffer, tmsize_t size, uint16_t s) { - TIFFDirectory* dir = &tif->tif_dir; - struct jbg_enc_state encoder; - - (void) size, (void) s; - - jbg_enc_init(&encoder, - dir->td_imagewidth, - dir->td_imagelength, - 1, - &buffer, - JBIGOutputBie, - tif); - /* - * jbg_enc_out does the "real" encoding. As data is encoded, - * JBIGOutputBie is called, which writes the data to the directory. - */ - jbg_enc_out(&encoder); - jbg_enc_free(&encoder); - - return 1; + TIFFDirectory *dir = &tif->tif_dir; + struct jbg_enc_state encoder; + + (void)size, (void)s; + + jbg_enc_init(&encoder, dir->td_imagewidth, dir->td_imagelength, 1, &buffer, + JBIGOutputBie, tif); + /* + * jbg_enc_out does the "real" encoding. As data is encoded, + * JBIGOutputBie is called, which writes the data to the directory. + */ + jbg_enc_out(&encoder); + jbg_enc_free(&encoder); + + return 1; } -int TIFFInitJBIG(TIFF* tif, int scheme) +int TIFFInitJBIG(TIFF *tif, int scheme) { - (void)scheme; - assert(scheme == COMPRESSION_JBIG); - - /* - * These flags are set so the JBIG Codec can control when to reverse - * bits and when not to and to allow the jbig decoder and bit reverser - * to write to memory when necessary. - */ - tif->tif_flags |= TIFF_NOBITREV; - tif->tif_flags &= ~TIFF_MAPPED; - /* We may have read from a previous IFD and thus set TIFF_BUFFERMMAP and - * cleared TIFF_MYBUFFER. It is necessary to restore them to their initial - * value to be consistent with the state of a non-memory mapped file. - */ - if (tif->tif_flags&TIFF_BUFFERMMAP) { - tif->tif_rawdata = NULL; - tif->tif_rawdatasize = 0; - tif->tif_flags &= ~TIFF_BUFFERMMAP; - tif->tif_flags |= TIFF_MYBUFFER; - } - - /* Setup the function pointers for encode, decode, and cleanup. */ - tif->tif_setupdecode = JBIGSetupDecode; - tif->tif_decodestrip = JBIGDecode; - - tif->tif_setupencode = JBIGSetupEncode; - tif->tif_encodestrip = JBIGEncode; - - return 1; + (void)scheme; + assert(scheme == COMPRESSION_JBIG); + + /* + * These flags are set so the JBIG Codec can control when to reverse + * bits and when not to and to allow the jbig decoder and bit reverser + * to write to memory when necessary. + */ + tif->tif_flags |= TIFF_NOBITREV; + tif->tif_flags &= ~TIFF_MAPPED; + /* We may have read from a previous IFD and thus set TIFF_BUFFERMMAP and + * cleared TIFF_MYBUFFER. It is necessary to restore them to their initial + * value to be consistent with the state of a non-memory mapped file. + */ + if (tif->tif_flags & TIFF_BUFFERMMAP) + { + tif->tif_rawdata = NULL; + tif->tif_rawdatasize = 0; + tif->tif_flags &= ~TIFF_BUFFERMMAP; + tif->tif_flags |= TIFF_MYBUFFER; + } + + /* Setup the function pointers for encode, decode, and cleanup. */ + tif->tif_setupdecode = JBIGSetupDecode; + tif->tif_decodestrip = JBIGDecode; + + tif->tif_setupencode = JBIGSetupEncode; + tif->tif_encodestrip = JBIGEncode; + + return 1; } #endif /* JBIG_SUPPORT */ - -/* vim: set ts=8 sts=8 sw=8 noet: */ - -/* - * Local Variables: - * mode: c - * c-basic-offset: 8 - * fill-column: 78 - * End: - */ |