Index: third_party/tiff_v403/tif_ojpeg.c |
diff --git a/third_party/tiff_v403/tif_ojpeg.c b/third_party/tiff_v403/tif_ojpeg.c |
deleted file mode 100644 |
index 0a774a526ea808f01092f2c639a0228792e33b87..0000000000000000000000000000000000000000 |
--- a/third_party/tiff_v403/tif_ojpeg.c |
+++ /dev/null |
@@ -1,2504 +0,0 @@ |
-/* $Id: tif_ojpeg.c,v 1.56 2012-05-24 03:15:18 fwarmerdam Exp $ */ |
- |
-/* WARNING: The type of JPEG encapsulation defined by the TIFF Version 6.0 |
- specification is now totally obsolete and deprecated for new applications and |
- images. This file was was created solely in order to read unconverted images |
- still present on some users' computer systems. It will never be extended |
- to write such files. Writing new-style JPEG compressed TIFFs is implemented |
- in tif_jpeg.c. |
- |
- The code is carefully crafted to robustly read all gathered JPEG-in-TIFF |
- testfiles, and anticipate as much as possible all other... But still, it may |
- fail on some. If you encounter problems, please report them on the TIFF |
- mailing list and/or to Joris Van Damme <info@awaresystems.be>. |
- |
- Please read the file called "TIFF Technical Note #2" if you need to be |
- convinced this compression scheme is bad and breaks TIFF. That document |
- is linked to from the LibTiff site <http://www.remotesensing.org/libtiff/> |
- and from AWare Systems' TIFF section |
- <http://www.awaresystems.be/imaging/tiff.html>. It is also absorbed |
- in Adobe's specification supplements, marked "draft" up to this day, but |
- supported by the TIFF community. |
- |
- This file interfaces with Release 6B of the JPEG Library written by the |
- Independent JPEG Group. Previous versions of this file required a hack inside |
- the LibJpeg library. This version no longer requires that. Remember to |
- remove the hack if you update from the old version. |
- |
- Copyright (c) Joris Van Damme <info@awaresystems.be> |
- Copyright (c) AWare Systems <http://www.awaresystems.be/> |
- |
- The licence agreement for this file is the same as the rest of the LibTiff |
- library. |
- |
- IN NO EVENT SHALL JORIS VAN DAMME OR AWARE SYSTEMS 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. |
- |
- Joris Van Damme and/or AWare Systems may be available for custom |
- developement. If you like what you see, and need anything similar or related, |
- contact <info@awaresystems.be>. |
-*/ |
- |
-/* What is what, and what is not? |
- |
- This decoder starts with an input stream, that is essentially the JpegInterchangeFormat |
- stream, if any, followed by the strile data, if any. This stream is read in |
- OJPEGReadByte and related functions. |
- |
- It analyzes the start of this stream, until it encounters non-marker data, i.e. |
- compressed image data. Some of the header markers it sees have no actual content, |
- like the SOI marker, and APP/COM markers that really shouldn't even be there. Some |
- other markers do have content, and the valuable bits and pieces of information |
- in these markers are saved, checking all to verify that the stream is more or |
- less within expected bounds. This happens inside the OJPEGReadHeaderInfoSecStreamXxx |
- functions. |
- |
- Some OJPEG imagery contains no valid JPEG header markers. This situation is picked |
- up on if we've seen no SOF marker when we're at the start of the compressed image |
- data. In this case, the tables are read from JpegXxxTables tags, and the other |
- bits and pieces of information is initialized to its most basic value. This is |
- implemented in the OJPEGReadHeaderInfoSecTablesXxx functions. |
- |
- When this is complete, a good and valid JPEG header can be assembled, and this is |
- passed through to LibJpeg. When that's done, the remainder of the input stream, i.e. |
- the compressed image data, can be passed through unchanged. This is done in |
- OJPEGWriteStream functions. |
- |
- LibTiff rightly expects to know the subsampling values before decompression. Just like |
- in new-style JPEG-in-TIFF, though, or even more so, actually, the YCbCrsubsampling |
- tag is notoriously unreliable. To correct these tag values with the ones inside |
- the JPEG stream, the first part of the input stream is pre-scanned in |
- OJPEGSubsamplingCorrect, making no note of any other data, reporting no warnings |
- or errors, up to the point where either these values are read, or it's clear they |
- aren't there. This means that some of the data is read twice, but we feel speed |
- in correcting these values is important enough to warrant this sacrifice. Allthough |
- there is currently no define or other configuration mechanism to disable this behaviour, |
- the actual header scanning is build to robustly respond with error report if it |
- should encounter an uncorrected mismatch of subsampling values. See |
- OJPEGReadHeaderInfoSecStreamSof. |
- |
- The restart interval and restart markers are the most tricky part... The restart |
- interval can be specified in a tag. It can also be set inside the input JPEG stream. |
- It can be used inside the input JPEG stream. If reading from strile data, we've |
- consistenly discovered the need to insert restart markers in between the different |
- striles, as is also probably the most likely interpretation of the original TIFF 6.0 |
- specification. With all this setting of interval, and actual use of markers that is not |
- predictable at the time of valid JPEG header assembly, the restart thing may turn |
- out the Achilles heel of this implementation. Fortunately, most OJPEG writer vendors |
- succeed in reading back what they write, which may be the reason why we've been able |
- to discover ways that seem to work. |
- |
- Some special provision is made for planarconfig separate OJPEG files. These seem |
- to consistently contain header info, a SOS marker, a plane, SOS marker, plane, SOS, |
- and plane. This may or may not be a valid JPEG configuration, we don't know and don't |
- care. We want LibTiff to be able to access the planes individually, without huge |
- buffering inside LibJpeg, anyway. So we compose headers to feed to LibJpeg, in this |
- case, that allow us to pass a single plane such that LibJpeg sees a valid |
- single-channel JPEG stream. Locating subsequent SOS markers, and thus subsequent |
- planes, is done inside OJPEGReadSecondarySos. |
- |
- The benefit of the scheme is... that it works, basically. We know of no other that |
- does. It works without checking software tag, or otherwise going about things in an |
- OJPEG flavor specific manner. Instead, it is a single scheme, that covers the cases |
- with and without JpegInterchangeFormat, with and without striles, with part of |
- the header in JpegInterchangeFormat and remainder in first strile, etc. It is forgiving |
- and robust, may likely work with OJPEG flavors we've not seen yet, and makes most out |
- of the data. |
- |
- Another nice side-effect is that a complete JPEG single valid stream is build if |
- planarconfig is not separate (vast majority). We may one day use that to build |
- converters to JPEG, and/or to new-style JPEG compression inside TIFF. |
- |
- A dissadvantage is the lack of random access to the individual striles. This is the |
- reason for much of the complicated restart-and-position stuff inside OJPEGPreDecode. |
- Applications would do well accessing all striles in order, as this will result in |
- a single sequential scan of the input stream, and no restarting of LibJpeg decoding |
- session. |
-*/ |
- |
- |
-#define WIN32_LEAN_AND_MEAN |
-#define VC_EXTRALEAN |
- |
-#include "tiffiop.h" |
-#ifdef OJPEG_SUPPORT |
- |
-/* Configuration defines here are: |
- * JPEG_ENCAP_EXTERNAL: The normal way to call libjpeg, uses longjump. In some environments, |
- * like eg LibTiffDelphi, this is not possible. For this reason, the actual calls to |
- * libjpeg, with longjump stuff, are encapsulated in dedicated functions. When |
- * JPEG_ENCAP_EXTERNAL is defined, these encapsulating functions are declared external |
- * to this unit, and can be defined elsewhere to use stuff other then longjump. |
- * The default mode, without JPEG_ENCAP_EXTERNAL, implements the call encapsulators |
- * here, internally, with normal longjump. |
- * SETJMP, LONGJMP, JMP_BUF: On some machines/environments a longjump equivalent is |
- * conviniently available, but still it may be worthwhile to use _setjmp or sigsetjmp |
- * in place of plain setjmp. These macros will make it easier. It is useless |
- * to fiddle with these if you define JPEG_ENCAP_EXTERNAL. |
- * OJPEG_BUFFER: Define the size of the desired buffer here. Should be small enough so as to guarantee |
- * instant processing, optimal streaming and optimal use of processor cache, but also big |
- * enough so as to not result in significant call overhead. It should be at least a few |
- * bytes to accomodate some structures (this is verified in asserts), but it would not be |
- * sensible to make it this small anyway, and it should be at most 64K since it is indexed |
- * with uint16. We recommend 2K. |
- * EGYPTIANWALK: You could also define EGYPTIANWALK here, but it is not used anywhere and has |
- * absolutely no effect. That is why most people insist the EGYPTIANWALK is a bit silly. |
- */ |
- |
-/* define LIBJPEG_ENCAP_EXTERNAL */ |
-#define SETJMP(jbuf) setjmp(jbuf) |
-#define LONGJMP(jbuf,code) longjmp(jbuf,code) |
-#define JMP_BUF jmp_buf |
-#define OJPEG_BUFFER 2048 |
-/* define EGYPTIANWALK */ |
- |
-#define JPEG_MARKER_SOF0 0xC0 |
-#define JPEG_MARKER_SOF1 0xC1 |
-#define JPEG_MARKER_SOF3 0xC3 |
-#define JPEG_MARKER_DHT 0xC4 |
-#define JPEG_MARKER_RST0 0XD0 |
-#define JPEG_MARKER_SOI 0xD8 |
-#define JPEG_MARKER_EOI 0xD9 |
-#define JPEG_MARKER_SOS 0xDA |
-#define JPEG_MARKER_DQT 0xDB |
-#define JPEG_MARKER_DRI 0xDD |
-#define JPEG_MARKER_APP0 0xE0 |
-#define JPEG_MARKER_COM 0xFE |
- |
-#define FIELD_OJPEG_JPEGINTERCHANGEFORMAT (FIELD_CODEC+0) |
-#define FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH (FIELD_CODEC+1) |
-#define FIELD_OJPEG_JPEGQTABLES (FIELD_CODEC+2) |
-#define FIELD_OJPEG_JPEGDCTABLES (FIELD_CODEC+3) |
-#define FIELD_OJPEG_JPEGACTABLES (FIELD_CODEC+4) |
-#define FIELD_OJPEG_JPEGPROC (FIELD_CODEC+5) |
-#define FIELD_OJPEG_JPEGRESTARTINTERVAL (FIELD_CODEC+6) |
- |
-static const TIFFField ojpegFields[] = { |
- {TIFFTAG_JPEGIFOFFSET,1,1,TIFF_LONG8,0,TIFF_SETGET_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGINTERCHANGEFORMAT,TRUE,FALSE,"JpegInterchangeFormat",NULL}, |
- {TIFFTAG_JPEGIFBYTECOUNT,1,1,TIFF_LONG8,0,TIFF_SETGET_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH,TRUE,FALSE,"JpegInterchangeFormatLength",NULL}, |
- {TIFFTAG_JPEGQTABLES,TIFF_VARIABLE2,TIFF_VARIABLE2,TIFF_LONG8,0,TIFF_SETGET_C32_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGQTABLES,FALSE,TRUE,"JpegQTables",NULL}, |
- {TIFFTAG_JPEGDCTABLES,TIFF_VARIABLE2,TIFF_VARIABLE2,TIFF_LONG8,0,TIFF_SETGET_C32_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGDCTABLES,FALSE,TRUE,"JpegDcTables",NULL}, |
- {TIFFTAG_JPEGACTABLES,TIFF_VARIABLE2,TIFF_VARIABLE2,TIFF_LONG8,0,TIFF_SETGET_C32_UINT64,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGACTABLES,FALSE,TRUE,"JpegAcTables",NULL}, |
- {TIFFTAG_JPEGPROC,1,1,TIFF_SHORT,0,TIFF_SETGET_UINT16,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGPROC,FALSE,FALSE,"JpegProc",NULL}, |
- {TIFFTAG_JPEGRESTARTINTERVAL,1,1,TIFF_SHORT,0,TIFF_SETGET_UINT16,TIFF_SETGET_UNDEFINED,FIELD_OJPEG_JPEGRESTARTINTERVAL,FALSE,FALSE,"JpegRestartInterval",NULL}, |
-}; |
- |
-#ifndef LIBJPEG_ENCAP_EXTERNAL |
-#include <setjmp.h> |
-#endif |
- |
-/* We undefine FAR to avoid conflict with JPEG definition */ |
- |
-#ifdef FAR |
-#undef FAR |
-#endif |
- |
-/* |
- Libjpeg's jmorecfg.h defines INT16 and INT32, but only if XMD_H is |
- not defined. Unfortunately, the MinGW and Borland compilers include |
- a typedef for INT32, which causes a conflict. MSVC does not include |
- a conficting typedef given the headers which are included. |
-*/ |
-#if defined(__BORLANDC__) || defined(__MINGW32__) |
-# define XMD_H 1 |
-#endif |
- |
-/* Define "boolean" as unsigned char, not int, per Windows custom. */ |
-#if defined(__WIN32__) && !defined(__MINGW32__) |
-# ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ |
- typedef unsigned char boolean; |
-# endif |
-# define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ |
-#endif |
- |
-#if defined(USE_SYSTEM_LIBJPEG) |
-#include <jpeglib.h> |
-#elif defined(USE_LIBJPEG_TURBO) |
-#include "third_party/libjpeg_turbo/jpeglib.h" |
-#else |
-#include "third_party/libjpeg/jpeglib.h" |
-#endif |
- |
-typedef struct jpeg_error_mgr jpeg_error_mgr; |
-typedef struct jpeg_common_struct jpeg_common_struct; |
-typedef struct jpeg_decompress_struct jpeg_decompress_struct; |
-typedef struct jpeg_source_mgr jpeg_source_mgr; |
- |
-typedef enum { |
- osibsNotSetYet, |
- osibsJpegInterchangeFormat, |
- osibsStrile, |
- osibsEof |
-} OJPEGStateInBufferSource; |
- |
-typedef enum { |
- ososSoi, |
- ososQTable0,ososQTable1,ososQTable2,ososQTable3, |
- ososDcTable0,ososDcTable1,ososDcTable2,ososDcTable3, |
- ososAcTable0,ososAcTable1,ososAcTable2,ososAcTable3, |
- ososDri, |
- ososSof, |
- ososSos, |
- ososCompressed, |
- ososRst, |
- ososEoi |
-} OJPEGStateOutState; |
- |
-typedef struct { |
- TIFF* tif; |
- #ifndef LIBJPEG_ENCAP_EXTERNAL |
- JMP_BUF exit_jmpbuf; |
- #endif |
- TIFFVGetMethod vgetparent; |
- TIFFVSetMethod vsetparent; |
- TIFFPrintMethod printdir; |
- uint64 file_size; |
- uint32 image_width; |
- uint32 image_length; |
- uint32 strile_width; |
- uint32 strile_length; |
- uint32 strile_length_total; |
- uint8 samples_per_pixel; |
- uint8 plane_sample_offset; |
- uint8 samples_per_pixel_per_plane; |
- uint64 jpeg_interchange_format; |
- uint64 jpeg_interchange_format_length; |
- uint8 jpeg_proc; |
- uint8 subsamplingcorrect; |
- uint8 subsamplingcorrect_done; |
- uint8 subsampling_tag; |
- uint8 subsampling_hor; |
- uint8 subsampling_ver; |
- uint8 subsampling_force_desubsampling_inside_decompression; |
- uint8 qtable_offset_count; |
- uint8 dctable_offset_count; |
- uint8 actable_offset_count; |
- uint64 qtable_offset[3]; |
- uint64 dctable_offset[3]; |
- uint64 actable_offset[3]; |
- uint8* qtable[4]; |
- uint8* dctable[4]; |
- uint8* actable[4]; |
- uint16 restart_interval; |
- uint8 restart_index; |
- uint8 sof_log; |
- uint8 sof_marker_id; |
- uint32 sof_x; |
- uint32 sof_y; |
- uint8 sof_c[3]; |
- uint8 sof_hv[3]; |
- uint8 sof_tq[3]; |
- uint8 sos_cs[3]; |
- uint8 sos_tda[3]; |
- struct { |
- uint8 log; |
- OJPEGStateInBufferSource in_buffer_source; |
- uint32 in_buffer_next_strile; |
- uint64 in_buffer_file_pos; |
- uint64 in_buffer_file_togo; |
- } sos_end[3]; |
- uint8 readheader_done; |
- uint8 writeheader_done; |
- uint16 write_cursample; |
- uint32 write_curstrile; |
- uint8 libjpeg_session_active; |
- uint8 libjpeg_jpeg_query_style; |
- jpeg_error_mgr libjpeg_jpeg_error_mgr; |
- jpeg_decompress_struct libjpeg_jpeg_decompress_struct; |
- jpeg_source_mgr libjpeg_jpeg_source_mgr; |
- uint8 subsampling_convert_log; |
- uint32 subsampling_convert_ylinelen; |
- uint32 subsampling_convert_ylines; |
- uint32 subsampling_convert_clinelen; |
- uint32 subsampling_convert_clines; |
- uint32 subsampling_convert_ybuflen; |
- uint32 subsampling_convert_cbuflen; |
- uint32 subsampling_convert_ycbcrbuflen; |
- uint8* subsampling_convert_ycbcrbuf; |
- uint8* subsampling_convert_ybuf; |
- uint8* subsampling_convert_cbbuf; |
- uint8* subsampling_convert_crbuf; |
- uint32 subsampling_convert_ycbcrimagelen; |
- uint8** subsampling_convert_ycbcrimage; |
- uint32 subsampling_convert_clinelenout; |
- uint32 subsampling_convert_state; |
- uint32 bytes_per_line; /* if the codec outputs subsampled data, a 'line' in bytes_per_line */ |
- uint32 lines_per_strile; /* and lines_per_strile means subsampling_ver desubsampled rows */ |
- OJPEGStateInBufferSource in_buffer_source; |
- uint32 in_buffer_next_strile; |
- uint32 in_buffer_strile_count; |
- uint64 in_buffer_file_pos; |
- uint8 in_buffer_file_pos_log; |
- uint64 in_buffer_file_togo; |
- uint16 in_buffer_togo; |
- uint8* in_buffer_cur; |
- uint8 in_buffer[OJPEG_BUFFER]; |
- OJPEGStateOutState out_state; |
- uint8 out_buffer[OJPEG_BUFFER]; |
- uint8* skip_buffer; |
-} OJPEGState; |
- |
-static int OJPEGVGetField(TIFF* tif, uint32 tag, va_list ap); |
-static int OJPEGVSetField(TIFF* tif, uint32 tag, va_list ap); |
-static void OJPEGPrintDir(TIFF* tif, FILE* fd, long flags); |
- |
-static int OJPEGFixupTags(TIFF* tif); |
-static int OJPEGSetupDecode(TIFF* tif); |
-static int OJPEGPreDecode(TIFF* tif, uint16 s); |
-static int OJPEGPreDecodeSkipRaw(TIFF* tif); |
-static int OJPEGPreDecodeSkipScanlines(TIFF* tif); |
-static int OJPEGDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s); |
-static int OJPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc); |
-static int OJPEGDecodeScanlines(TIFF* tif, uint8* buf, tmsize_t cc); |
-static void OJPEGPostDecode(TIFF* tif, uint8* buf, tmsize_t cc); |
-static int OJPEGSetupEncode(TIFF* tif); |
-static int OJPEGPreEncode(TIFF* tif, uint16 s); |
-static int OJPEGEncode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s); |
-static int OJPEGPostEncode(TIFF* tif); |
-static void OJPEGCleanup(TIFF* tif); |
- |
-static void OJPEGSubsamplingCorrect(TIFF* tif); |
-static int OJPEGReadHeaderInfo(TIFF* tif); |
-static int OJPEGReadSecondarySos(TIFF* tif, uint16 s); |
-static int OJPEGWriteHeaderInfo(TIFF* tif); |
-static void OJPEGLibjpegSessionAbort(TIFF* tif); |
- |
-static int OJPEGReadHeaderInfoSec(TIFF* tif); |
-static int OJPEGReadHeaderInfoSecStreamDri(TIFF* tif); |
-static int OJPEGReadHeaderInfoSecStreamDqt(TIFF* tif); |
-static int OJPEGReadHeaderInfoSecStreamDht(TIFF* tif); |
-static int OJPEGReadHeaderInfoSecStreamSof(TIFF* tif, uint8 marker_id); |
-static int OJPEGReadHeaderInfoSecStreamSos(TIFF* tif); |
-static int OJPEGReadHeaderInfoSecTablesQTable(TIFF* tif); |
-static int OJPEGReadHeaderInfoSecTablesDcTable(TIFF* tif); |
-static int OJPEGReadHeaderInfoSecTablesAcTable(TIFF* tif); |
- |
-static int OJPEGReadBufferFill(OJPEGState* sp); |
-static int OJPEGReadByte(OJPEGState* sp, uint8* byte); |
-static int OJPEGReadBytePeek(OJPEGState* sp, uint8* byte); |
-static void OJPEGReadByteAdvance(OJPEGState* sp); |
-static int OJPEGReadWord(OJPEGState* sp, uint16* word); |
-static int OJPEGReadBlock(OJPEGState* sp, uint16 len, void* mem); |
-static void OJPEGReadSkip(OJPEGState* sp, uint16 len); |
- |
-static int OJPEGWriteStream(TIFF* tif, void** mem, uint32* len); |
-static void OJPEGWriteStreamSoi(TIFF* tif, void** mem, uint32* len); |
-static void OJPEGWriteStreamQTable(TIFF* tif, uint8 table_index, void** mem, uint32* len); |
-static void OJPEGWriteStreamDcTable(TIFF* tif, uint8 table_index, void** mem, uint32* len); |
-static void OJPEGWriteStreamAcTable(TIFF* tif, uint8 table_index, void** mem, uint32* len); |
-static void OJPEGWriteStreamDri(TIFF* tif, void** mem, uint32* len); |
-static void OJPEGWriteStreamSof(TIFF* tif, void** mem, uint32* len); |
-static void OJPEGWriteStreamSos(TIFF* tif, void** mem, uint32* len); |
-static int OJPEGWriteStreamCompressed(TIFF* tif, void** mem, uint32* len); |
-static void OJPEGWriteStreamRst(TIFF* tif, void** mem, uint32* len); |
-static void OJPEGWriteStreamEoi(TIFF* tif, void** mem, uint32* len); |
- |
-#ifdef LIBJPEG_ENCAP_EXTERNAL |
-extern int jpeg_create_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo); |
-extern int jpeg_read_header_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, uint8 require_image); |
-extern int jpeg_start_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo); |
-extern int jpeg_read_scanlines_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* scanlines, uint32 max_lines); |
-extern int jpeg_read_raw_data_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* data, uint32 max_lines); |
-extern void jpeg_encap_unwind(TIFF* tif); |
-#else |
-static int jpeg_create_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* j); |
-static int jpeg_read_header_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, uint8 require_image); |
-static int jpeg_start_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo); |
-static int jpeg_read_scanlines_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* scanlines, uint32 max_lines); |
-static int jpeg_read_raw_data_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* data, uint32 max_lines); |
-static void jpeg_encap_unwind(TIFF* tif); |
-#endif |
- |
-static void OJPEGLibjpegJpegErrorMgrOutputMessage(jpeg_common_struct* cinfo); |
-static void OJPEGLibjpegJpegErrorMgrErrorExit(jpeg_common_struct* cinfo); |
-static void OJPEGLibjpegJpegSourceMgrInitSource(jpeg_decompress_struct* cinfo); |
-static boolean OJPEGLibjpegJpegSourceMgrFillInputBuffer(jpeg_decompress_struct* cinfo); |
-static void OJPEGLibjpegJpegSourceMgrSkipInputData(jpeg_decompress_struct* cinfo, long num_bytes); |
-static boolean OJPEGLibjpegJpegSourceMgrResyncToRestart(jpeg_decompress_struct* cinfo, int desired); |
-static void OJPEGLibjpegJpegSourceMgrTermSource(jpeg_decompress_struct* cinfo); |
- |
-int |
-TIFFInitOJPEG(TIFF* tif, int scheme) |
-{ |
- static const char module[]="TIFFInitOJPEG"; |
- OJPEGState* sp; |
- |
- assert(scheme==COMPRESSION_OJPEG); |
- |
- /* |
- * Merge codec-specific tag information. |
- */ |
- if (!_TIFFMergeFields(tif, ojpegFields, TIFFArrayCount(ojpegFields))) { |
- TIFFErrorExt(tif->tif_clientdata, module, |
- "Merging Old JPEG codec-specific tags failed"); |
- return 0; |
- } |
- |
- /* state block */ |
- sp = (OJPEGState*)_TIFFmalloc(sizeof(OJPEGState)); // // add (OJPEGState*) cast |
- if (sp == NULL) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"No space for OJPEG state block"); |
- return(0); |
- } |
- _TIFFmemset(sp,0,sizeof(OJPEGState)); |
- sp->tif=tif; |
- sp->jpeg_proc=1; |
- sp->subsampling_hor=2; |
- sp->subsampling_ver=2; |
- TIFFSetField(tif,TIFFTAG_YCBCRSUBSAMPLING,2,2); |
- /* tif codec methods */ |
- tif->tif_fixuptags=OJPEGFixupTags; |
- tif->tif_setupdecode=OJPEGSetupDecode; |
- tif->tif_predecode=OJPEGPreDecode; |
- tif->tif_postdecode=OJPEGPostDecode; |
- tif->tif_decoderow=OJPEGDecode; |
- tif->tif_decodestrip=OJPEGDecode; |
- tif->tif_decodetile=OJPEGDecode; |
- tif->tif_setupencode=OJPEGSetupEncode; |
- tif->tif_preencode=OJPEGPreEncode; |
- tif->tif_postencode=OJPEGPostEncode; |
- tif->tif_encoderow=OJPEGEncode; |
- tif->tif_encodestrip=OJPEGEncode; |
- tif->tif_encodetile=OJPEGEncode; |
- tif->tif_cleanup=OJPEGCleanup; |
- tif->tif_data=(uint8*)sp; |
- /* tif tag methods */ |
- sp->vgetparent=tif->tif_tagmethods.vgetfield; |
- tif->tif_tagmethods.vgetfield=OJPEGVGetField; |
- sp->vsetparent=tif->tif_tagmethods.vsetfield; |
- tif->tif_tagmethods.vsetfield=OJPEGVSetField; |
- sp->printdir=tif->tif_tagmethods.printdir; |
- tif->tif_tagmethods.printdir=OJPEGPrintDir; |
- /* Some OJPEG files don't have strip or tile offsets or bytecounts tags. |
- Some others do, but have totally meaningless or corrupt values |
- in these tags. In these cases, the JpegInterchangeFormat stream is |
- reliable. In any case, this decoder reads the compressed data itself, |
- from the most reliable locations, and we need to notify encapsulating |
- LibTiff not to read raw strips or tiles for us. */ |
- tif->tif_flags|=TIFF_NOREADRAW; |
- return(1); |
-} |
- |
-static int |
-OJPEGVGetField(TIFF* tif, uint32 tag, va_list ap) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- switch(tag) |
- { |
- case TIFFTAG_JPEGIFOFFSET: |
- *va_arg(ap,uint64*)=(uint64)sp->jpeg_interchange_format; |
- break; |
- case TIFFTAG_JPEGIFBYTECOUNT: |
- *va_arg(ap,uint64*)=(uint64)sp->jpeg_interchange_format_length; |
- break; |
- case TIFFTAG_YCBCRSUBSAMPLING: |
- if (sp->subsamplingcorrect_done==0) |
- OJPEGSubsamplingCorrect(tif); |
- *va_arg(ap,uint16*)=(uint16)sp->subsampling_hor; |
- *va_arg(ap,uint16*)=(uint16)sp->subsampling_ver; |
- break; |
- case TIFFTAG_JPEGQTABLES: |
- *va_arg(ap,uint32*)=(uint32)sp->qtable_offset_count; |
- *va_arg(ap,void**)=(void*)sp->qtable_offset; |
- break; |
- case TIFFTAG_JPEGDCTABLES: |
- *va_arg(ap,uint32*)=(uint32)sp->dctable_offset_count; |
- *va_arg(ap,void**)=(void*)sp->dctable_offset; |
- break; |
- case TIFFTAG_JPEGACTABLES: |
- *va_arg(ap,uint32*)=(uint32)sp->actable_offset_count; |
- *va_arg(ap,void**)=(void*)sp->actable_offset; |
- break; |
- case TIFFTAG_JPEGPROC: |
- *va_arg(ap,uint16*)=(uint16)sp->jpeg_proc; |
- break; |
- case TIFFTAG_JPEGRESTARTINTERVAL: |
- *va_arg(ap,uint16*)=sp->restart_interval; |
- break; |
- default: |
- return (*sp->vgetparent)(tif,tag,ap); |
- } |
- return (1); |
-} |
- |
-static int |
-OJPEGVSetField(TIFF* tif, uint32 tag, va_list ap) |
-{ |
- static const char module[]="OJPEGVSetField"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint32 ma; |
- uint64* mb; |
- uint32 n; |
- switch(tag) |
- { |
- case TIFFTAG_JPEGIFOFFSET: |
- sp->jpeg_interchange_format=(uint64)va_arg(ap,uint64); |
- break; |
- case TIFFTAG_JPEGIFBYTECOUNT: |
- sp->jpeg_interchange_format_length=(uint64)va_arg(ap,uint64); |
- break; |
- case TIFFTAG_YCBCRSUBSAMPLING: |
- sp->subsampling_tag=1; |
- sp->subsampling_hor=(uint8)va_arg(ap,uint16_vap); |
- sp->subsampling_ver=(uint8)va_arg(ap,uint16_vap); |
- tif->tif_dir.td_ycbcrsubsampling[0]=sp->subsampling_hor; |
- tif->tif_dir.td_ycbcrsubsampling[1]=sp->subsampling_ver; |
- break; |
- case TIFFTAG_JPEGQTABLES: |
- ma=(uint32)va_arg(ap,uint32); |
- if (ma!=0) |
- { |
- if (ma>3) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"JpegQTables tag has incorrect count"); |
- return(0); |
- } |
- sp->qtable_offset_count=(uint8)ma; |
- mb=(uint64*)va_arg(ap,uint64*); |
- for (n=0; n<ma; n++) |
- sp->qtable_offset[n]=mb[n]; |
- } |
- break; |
- case TIFFTAG_JPEGDCTABLES: |
- ma=(uint32)va_arg(ap,uint32); |
- if (ma!=0) |
- { |
- if (ma>3) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"JpegDcTables tag has incorrect count"); |
- return(0); |
- } |
- sp->dctable_offset_count=(uint8)ma; |
- mb=(uint64*)va_arg(ap,uint64*); |
- for (n=0; n<ma; n++) |
- sp->dctable_offset[n]=mb[n]; |
- } |
- break; |
- case TIFFTAG_JPEGACTABLES: |
- ma=(uint32)va_arg(ap,uint32); |
- if (ma!=0) |
- { |
- if (ma>3) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"JpegAcTables tag has incorrect count"); |
- return(0); |
- } |
- sp->actable_offset_count=(uint8)ma; |
- mb=(uint64*)va_arg(ap,uint64*); |
- for (n=0; n<ma; n++) |
- sp->actable_offset[n]=mb[n]; |
- } |
- break; |
- case TIFFTAG_JPEGPROC: |
- sp->jpeg_proc=(uint8)va_arg(ap,uint16_vap); |
- break; |
- case TIFFTAG_JPEGRESTARTINTERVAL: |
- sp->restart_interval=(uint16)va_arg(ap,uint16_vap); |
- break; |
- default: |
- return (*sp->vsetparent)(tif,tag,ap); |
- } |
- TIFFSetFieldBit(tif,TIFFFieldWithTag(tif,tag)->field_bit); |
- tif->tif_flags|=TIFF_DIRTYDIRECT; |
- return(1); |
-} |
- |
-static void |
-OJPEGPrintDir(TIFF* tif, FILE* fd, long flags) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8 m; |
- (void)flags; |
- assert(sp!=NULL); |
- if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGINTERCHANGEFORMAT)) |
- fprintf(fd," JpegInterchangeFormat: " TIFF_UINT64_FORMAT "\n",(TIFF_UINT64_T)sp->jpeg_interchange_format); |
- if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGINTERCHANGEFORMATLENGTH)) |
- fprintf(fd," JpegInterchangeFormatLength: " TIFF_UINT64_FORMAT "\n",(TIFF_UINT64_T)sp->jpeg_interchange_format_length); |
- if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGQTABLES)) |
- { |
- fprintf(fd," JpegQTables:"); |
- for (m=0; m<sp->qtable_offset_count; m++) |
- fprintf(fd," " TIFF_UINT64_FORMAT,(TIFF_UINT64_T)sp->qtable_offset[m]); |
- fprintf(fd,"\n"); |
- } |
- if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGDCTABLES)) |
- { |
- fprintf(fd," JpegDcTables:"); |
- for (m=0; m<sp->dctable_offset_count; m++) |
- fprintf(fd," " TIFF_UINT64_FORMAT,(TIFF_UINT64_T)sp->dctable_offset[m]); |
- fprintf(fd,"\n"); |
- } |
- if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGACTABLES)) |
- { |
- fprintf(fd," JpegAcTables:"); |
- for (m=0; m<sp->actable_offset_count; m++) |
- fprintf(fd," " TIFF_UINT64_FORMAT,(TIFF_UINT64_T)sp->actable_offset[m]); |
- fprintf(fd,"\n"); |
- } |
- if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGPROC)) |
- fprintf(fd," JpegProc: %u\n",(unsigned int)sp->jpeg_proc); |
- if (TIFFFieldSet(tif,FIELD_OJPEG_JPEGRESTARTINTERVAL)) |
- fprintf(fd," JpegRestartInterval: %u\n",(unsigned int)sp->restart_interval); |
- if (sp->printdir) |
- (*sp->printdir)(tif, fd, flags); |
-} |
- |
-static int |
-OJPEGFixupTags(TIFF* tif) |
-{ |
- (void) tif; |
- return(1); |
-} |
- |
-static int |
-OJPEGSetupDecode(TIFF* tif) |
-{ |
- static const char module[]="OJPEGSetupDecode"; |
- TIFFWarningExt(tif->tif_clientdata,module,"Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software"); |
- return(1); |
-} |
- |
-static int |
-OJPEGPreDecode(TIFF* tif, uint16 s) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint32 m; |
- if (sp->subsamplingcorrect_done==0) |
- OJPEGSubsamplingCorrect(tif); |
- if (sp->readheader_done==0) |
- { |
- if (OJPEGReadHeaderInfo(tif)==0) |
- return(0); |
- } |
- if (sp->sos_end[s].log==0) |
- { |
- if (OJPEGReadSecondarySos(tif,s)==0) |
- return(0); |
- } |
- if isTiled(tif) |
- m=tif->tif_curtile; |
- else |
- m=tif->tif_curstrip; |
- if ((sp->writeheader_done!=0) && ((sp->write_cursample!=s) || (sp->write_curstrile>m))) |
- { |
- if (sp->libjpeg_session_active!=0) |
- OJPEGLibjpegSessionAbort(tif); |
- sp->writeheader_done=0; |
- } |
- if (sp->writeheader_done==0) |
- { |
- sp->plane_sample_offset=(uint8)s; |
- sp->write_cursample=s; |
- sp->write_curstrile=s*tif->tif_dir.td_stripsperimage; |
- if ((sp->in_buffer_file_pos_log==0) || |
- (sp->in_buffer_file_pos-sp->in_buffer_togo!=sp->sos_end[s].in_buffer_file_pos)) |
- { |
- sp->in_buffer_source=sp->sos_end[s].in_buffer_source; |
- sp->in_buffer_next_strile=sp->sos_end[s].in_buffer_next_strile; |
- sp->in_buffer_file_pos=sp->sos_end[s].in_buffer_file_pos; |
- sp->in_buffer_file_pos_log=0; |
- sp->in_buffer_file_togo=sp->sos_end[s].in_buffer_file_togo; |
- sp->in_buffer_togo=0; |
- sp->in_buffer_cur=0; |
- } |
- if (OJPEGWriteHeaderInfo(tif)==0) |
- return(0); |
- } |
- while (sp->write_curstrile<m) |
- { |
- if (sp->libjpeg_jpeg_query_style==0) |
- { |
- if (OJPEGPreDecodeSkipRaw(tif)==0) |
- return(0); |
- } |
- else |
- { |
- if (OJPEGPreDecodeSkipScanlines(tif)==0) |
- return(0); |
- } |
- sp->write_curstrile++; |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGPreDecodeSkipRaw(TIFF* tif) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint32 m; |
- m=sp->lines_per_strile; |
- if (sp->subsampling_convert_state!=0) |
- { |
- if (sp->subsampling_convert_clines-sp->subsampling_convert_state>=m) |
- { |
- sp->subsampling_convert_state+=m; |
- if (sp->subsampling_convert_state==sp->subsampling_convert_clines) |
- sp->subsampling_convert_state=0; |
- return(1); |
- } |
- m-=sp->subsampling_convert_clines-sp->subsampling_convert_state; |
- sp->subsampling_convert_state=0; |
- } |
- while (m>=sp->subsampling_convert_clines) |
- { |
- if (jpeg_read_raw_data_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),sp->subsampling_convert_ycbcrimage,sp->subsampling_ver*8)==0) |
- return(0); |
- m-=sp->subsampling_convert_clines; |
- } |
- if (m>0) |
- { |
- if (jpeg_read_raw_data_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),sp->subsampling_convert_ycbcrimage,sp->subsampling_ver*8)==0) |
- return(0); |
- sp->subsampling_convert_state=m; |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGPreDecodeSkipScanlines(TIFF* tif) |
-{ |
- static const char module[]="OJPEGPreDecodeSkipScanlines"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint32 m; |
- if (sp->skip_buffer==NULL) |
- { |
- // add (uint8*) cast |
- sp->skip_buffer = (uint8*)_TIFFmalloc(sp->bytes_per_line); |
- if (sp->skip_buffer == NULL) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Out of memory"); |
- return(0); |
- } |
- } |
- for (m=0; m<sp->lines_per_strile; m++) |
- { |
- if (jpeg_read_scanlines_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),&sp->skip_buffer,1)==0) |
- return(0); |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- (void)s; |
- if (sp->libjpeg_jpeg_query_style==0) |
- { |
- if (OJPEGDecodeRaw(tif,buf,cc)==0) |
- return(0); |
- } |
- else |
- { |
- if (OJPEGDecodeScanlines(tif,buf,cc)==0) |
- return(0); |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc) |
-{ |
- static const char module[]="OJPEGDecodeRaw"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8* m; |
- tmsize_t n; |
- uint8* oy; |
- uint8* ocb; |
- uint8* ocr; |
- uint8* p; |
- uint32 q; |
- uint8* r; |
- uint8 sx,sy; |
- if (cc%sp->bytes_per_line!=0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Fractional scanline not read"); |
- return(0); |
- } |
- assert(cc>0); |
- m=buf; |
- n=cc; |
- do |
- { |
- if (sp->subsampling_convert_state==0) |
- { |
- if (jpeg_read_raw_data_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),sp->subsampling_convert_ycbcrimage,sp->subsampling_ver*8)==0) |
- return(0); |
- } |
- oy=sp->subsampling_convert_ybuf+sp->subsampling_convert_state*sp->subsampling_ver*sp->subsampling_convert_ylinelen; |
- ocb=sp->subsampling_convert_cbbuf+sp->subsampling_convert_state*sp->subsampling_convert_clinelen; |
- ocr=sp->subsampling_convert_crbuf+sp->subsampling_convert_state*sp->subsampling_convert_clinelen; |
- p=m; |
- for (q=0; q<sp->subsampling_convert_clinelenout; q++) |
- { |
- r=oy; |
- for (sy=0; sy<sp->subsampling_ver; sy++) |
- { |
- for (sx=0; sx<sp->subsampling_hor; sx++) |
- *p++=*r++; |
- r+=sp->subsampling_convert_ylinelen-sp->subsampling_hor; |
- } |
- oy+=sp->subsampling_hor; |
- *p++=*ocb++; |
- *p++=*ocr++; |
- } |
- sp->subsampling_convert_state++; |
- if (sp->subsampling_convert_state==sp->subsampling_convert_clines) |
- sp->subsampling_convert_state=0; |
- m+=sp->bytes_per_line; |
- n-=sp->bytes_per_line; |
- } while(n>0); |
- return(1); |
-} |
- |
-static int |
-OJPEGDecodeScanlines(TIFF* tif, uint8* buf, tmsize_t cc) |
-{ |
- static const char module[]="OJPEGDecodeScanlines"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8* m; |
- tmsize_t n; |
- if (cc%sp->bytes_per_line!=0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Fractional scanline not read"); |
- return(0); |
- } |
- assert(cc>0); |
- m=buf; |
- n=cc; |
- do |
- { |
- if (jpeg_read_scanlines_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),&m,1)==0) |
- return(0); |
- m+=sp->bytes_per_line; |
- n-=sp->bytes_per_line; |
- } while(n>0); |
- return(1); |
-} |
- |
-static void |
-OJPEGPostDecode(TIFF* tif, uint8* buf, tmsize_t cc) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- (void)buf; |
- (void)cc; |
- sp->write_curstrile++; |
- if (sp->write_curstrile%tif->tif_dir.td_stripsperimage==0) |
- { |
- assert(sp->libjpeg_session_active!=0); |
- OJPEGLibjpegSessionAbort(tif); |
- sp->writeheader_done=0; |
- } |
-} |
- |
-static int |
-OJPEGSetupEncode(TIFF* tif) |
-{ |
- static const char module[]="OJPEGSetupEncode"; |
- TIFFErrorExt(tif->tif_clientdata,module,"OJPEG encoding not supported; use new-style JPEG compression instead"); |
- return(0); |
-} |
- |
-static int |
-OJPEGPreEncode(TIFF* tif, uint16 s) |
-{ |
- static const char module[]="OJPEGPreEncode"; |
- (void)s; |
- TIFFErrorExt(tif->tif_clientdata,module,"OJPEG encoding not supported; use new-style JPEG compression instead"); |
- return(0); |
-} |
- |
-static int |
-OJPEGEncode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s) |
-{ |
- static const char module[]="OJPEGEncode"; |
- (void)buf; |
- (void)cc; |
- (void)s; |
- TIFFErrorExt(tif->tif_clientdata,module,"OJPEG encoding not supported; use new-style JPEG compression instead"); |
- return(0); |
-} |
- |
-static int |
-OJPEGPostEncode(TIFF* tif) |
-{ |
- static const char module[]="OJPEGPostEncode"; |
- TIFFErrorExt(tif->tif_clientdata,module,"OJPEG encoding not supported; use new-style JPEG compression instead"); |
- return(0); |
-} |
- |
-static void |
-OJPEGCleanup(TIFF* tif) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- if (sp!=0) |
- { |
- tif->tif_tagmethods.vgetfield=sp->vgetparent; |
- tif->tif_tagmethods.vsetfield=sp->vsetparent; |
- tif->tif_tagmethods.printdir=sp->printdir; |
- if (sp->qtable[0]!=0) |
- _TIFFfree(sp->qtable[0]); |
- if (sp->qtable[1]!=0) |
- _TIFFfree(sp->qtable[1]); |
- if (sp->qtable[2]!=0) |
- _TIFFfree(sp->qtable[2]); |
- if (sp->qtable[3]!=0) |
- _TIFFfree(sp->qtable[3]); |
- if (sp->dctable[0]!=0) |
- _TIFFfree(sp->dctable[0]); |
- if (sp->dctable[1]!=0) |
- _TIFFfree(sp->dctable[1]); |
- if (sp->dctable[2]!=0) |
- _TIFFfree(sp->dctable[2]); |
- if (sp->dctable[3]!=0) |
- _TIFFfree(sp->dctable[3]); |
- if (sp->actable[0]!=0) |
- _TIFFfree(sp->actable[0]); |
- if (sp->actable[1]!=0) |
- _TIFFfree(sp->actable[1]); |
- if (sp->actable[2]!=0) |
- _TIFFfree(sp->actable[2]); |
- if (sp->actable[3]!=0) |
- _TIFFfree(sp->actable[3]); |
- if (sp->libjpeg_session_active!=0) |
- OJPEGLibjpegSessionAbort(tif); |
- if (sp->subsampling_convert_ycbcrbuf!=0) |
- _TIFFfree(sp->subsampling_convert_ycbcrbuf); |
- if (sp->subsampling_convert_ycbcrimage!=0) |
- _TIFFfree(sp->subsampling_convert_ycbcrimage); |
- if (sp->skip_buffer!=0) |
- _TIFFfree(sp->skip_buffer); |
- _TIFFfree(sp); |
- tif->tif_data=NULL; |
- _TIFFSetDefaultCompressionState(tif); |
- } |
-} |
- |
-static void |
-OJPEGSubsamplingCorrect(TIFF* tif) |
-{ |
- static const char module[]="OJPEGSubsamplingCorrect"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8 mh; |
- uint8 mv; |
- _TIFFFillStriles( tif ); |
- |
- assert(sp->subsamplingcorrect_done==0); |
- if ((tif->tif_dir.td_samplesperpixel!=3) || ((tif->tif_dir.td_photometric!=PHOTOMETRIC_YCBCR) && |
- (tif->tif_dir.td_photometric!=PHOTOMETRIC_ITULAB))) |
- { |
- if (sp->subsampling_tag!=0) |
- TIFFWarningExt(tif->tif_clientdata,module,"Subsampling tag not appropriate for this Photometric and/or SamplesPerPixel"); |
- sp->subsampling_hor=1; |
- sp->subsampling_ver=1; |
- sp->subsampling_force_desubsampling_inside_decompression=0; |
- } |
- else |
- { |
- sp->subsamplingcorrect_done=1; |
- mh=sp->subsampling_hor; |
- mv=sp->subsampling_ver; |
- sp->subsamplingcorrect=1; |
- OJPEGReadHeaderInfoSec(tif); |
- if (sp->subsampling_force_desubsampling_inside_decompression!=0) |
- { |
- sp->subsampling_hor=1; |
- sp->subsampling_ver=1; |
- } |
- sp->subsamplingcorrect=0; |
- if (((sp->subsampling_hor!=mh) || (sp->subsampling_ver!=mv)) && (sp->subsampling_force_desubsampling_inside_decompression==0)) |
- { |
- if (sp->subsampling_tag==0) |
- TIFFWarningExt(tif->tif_clientdata,module,"Subsampling tag is not set, yet subsampling inside JPEG data [%d,%d] does not match default values [2,2]; assuming subsampling inside JPEG data is correct",sp->subsampling_hor,sp->subsampling_ver); |
- else |
- TIFFWarningExt(tif->tif_clientdata,module,"Subsampling inside JPEG data [%d,%d] does not match subsampling tag values [%d,%d]; assuming subsampling inside JPEG data is correct",sp->subsampling_hor,sp->subsampling_ver,mh,mv); |
- } |
- if (sp->subsampling_force_desubsampling_inside_decompression!=0) |
- { |
- if (sp->subsampling_tag==0) |
- TIFFWarningExt(tif->tif_clientdata,module,"Subsampling tag is not set, yet subsampling inside JPEG data does not match default values [2,2] (nor any other values allowed in TIFF); assuming subsampling inside JPEG data is correct and desubsampling inside JPEG decompression"); |
- else |
- TIFFWarningExt(tif->tif_clientdata,module,"Subsampling inside JPEG data does not match subsampling tag values [%d,%d] (nor any other values allowed in TIFF); assuming subsampling inside JPEG data is correct and desubsampling inside JPEG decompression",mh,mv); |
- } |
- if (sp->subsampling_force_desubsampling_inside_decompression==0) |
- { |
- if (sp->subsampling_hor<sp->subsampling_ver) |
- TIFFWarningExt(tif->tif_clientdata,module,"Subsampling values [%d,%d] are not allowed in TIFF",sp->subsampling_hor,sp->subsampling_ver); |
- } |
- } |
- sp->subsamplingcorrect_done=1; |
-} |
- |
-static int |
-OJPEGReadHeaderInfo(TIFF* tif) |
-{ |
- static const char module[]="OJPEGReadHeaderInfo"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- assert(sp->readheader_done==0); |
- sp->image_width=tif->tif_dir.td_imagewidth; |
- sp->image_length=tif->tif_dir.td_imagelength; |
- if isTiled(tif) |
- { |
- sp->strile_width=tif->tif_dir.td_tilewidth; |
- sp->strile_length=tif->tif_dir.td_tilelength; |
- sp->strile_length_total=((sp->image_length+sp->strile_length-1)/sp->strile_length)*sp->strile_length; |
- } |
- else |
- { |
- sp->strile_width=sp->image_width; |
- sp->strile_length=tif->tif_dir.td_rowsperstrip; |
- sp->strile_length_total=sp->image_length; |
- } |
- if (tif->tif_dir.td_samplesperpixel==1) |
- { |
- sp->samples_per_pixel=1; |
- sp->plane_sample_offset=0; |
- sp->samples_per_pixel_per_plane=sp->samples_per_pixel; |
- sp->subsampling_hor=1; |
- sp->subsampling_ver=1; |
- } |
- else |
- { |
- if (tif->tif_dir.td_samplesperpixel!=3) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"SamplesPerPixel %d not supported for this compression scheme",sp->samples_per_pixel); |
- return(0); |
- } |
- sp->samples_per_pixel=3; |
- sp->plane_sample_offset=0; |
- if (tif->tif_dir.td_planarconfig==PLANARCONFIG_CONTIG) |
- sp->samples_per_pixel_per_plane=3; |
- else |
- sp->samples_per_pixel_per_plane=1; |
- } |
- if (sp->strile_length<sp->image_length) |
- { |
- if (sp->strile_length%(sp->subsampling_ver*8)!=0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Incompatible vertical subsampling and image strip/tile length"); |
- return(0); |
- } |
- sp->restart_interval=((sp->strile_width+sp->subsampling_hor*8-1)/(sp->subsampling_hor*8))*(sp->strile_length/(sp->subsampling_ver*8)); |
- } |
- if (OJPEGReadHeaderInfoSec(tif)==0) |
- return(0); |
- sp->sos_end[0].log=1; |
- sp->sos_end[0].in_buffer_source=sp->in_buffer_source; |
- sp->sos_end[0].in_buffer_next_strile=sp->in_buffer_next_strile; |
- sp->sos_end[0].in_buffer_file_pos=sp->in_buffer_file_pos-sp->in_buffer_togo; |
- sp->sos_end[0].in_buffer_file_togo=sp->in_buffer_file_togo+sp->in_buffer_togo; |
- sp->readheader_done=1; |
- return(1); |
-} |
- |
-static int |
-OJPEGReadSecondarySos(TIFF* tif, uint16 s) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8 m; |
- assert(s>0); |
- assert(s<3); |
- assert(sp->sos_end[0].log!=0); |
- assert(sp->sos_end[s].log==0); |
- sp->plane_sample_offset=s-1; |
- while(sp->sos_end[sp->plane_sample_offset].log==0) |
- sp->plane_sample_offset--; |
- sp->in_buffer_source=sp->sos_end[sp->plane_sample_offset].in_buffer_source; |
- sp->in_buffer_next_strile=sp->sos_end[sp->plane_sample_offset].in_buffer_next_strile; |
- sp->in_buffer_file_pos=sp->sos_end[sp->plane_sample_offset].in_buffer_file_pos; |
- sp->in_buffer_file_pos_log=0; |
- sp->in_buffer_file_togo=sp->sos_end[sp->plane_sample_offset].in_buffer_file_togo; |
- sp->in_buffer_togo=0; |
- sp->in_buffer_cur=0; |
- while(sp->plane_sample_offset<s) |
- { |
- do |
- { |
- if (OJPEGReadByte(sp,&m)==0) |
- return(0); |
- if (m==255) |
- { |
- do |
- { |
- if (OJPEGReadByte(sp,&m)==0) |
- return(0); |
- if (m!=255) |
- break; |
- } while(1); |
- if (m==JPEG_MARKER_SOS) |
- break; |
- } |
- } while(1); |
- sp->plane_sample_offset++; |
- if (OJPEGReadHeaderInfoSecStreamSos(tif)==0) |
- return(0); |
- sp->sos_end[sp->plane_sample_offset].log=1; |
- sp->sos_end[sp->plane_sample_offset].in_buffer_source=sp->in_buffer_source; |
- sp->sos_end[sp->plane_sample_offset].in_buffer_next_strile=sp->in_buffer_next_strile; |
- sp->sos_end[sp->plane_sample_offset].in_buffer_file_pos=sp->in_buffer_file_pos-sp->in_buffer_togo; |
- sp->sos_end[sp->plane_sample_offset].in_buffer_file_togo=sp->in_buffer_file_togo+sp->in_buffer_togo; |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGWriteHeaderInfo(TIFF* tif) |
-{ |
- static const char module[]="OJPEGWriteHeaderInfo"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8** m; |
- uint32 n; |
- /* if a previous attempt failed, don't try again */ |
- if (sp->libjpeg_session_active != 0) |
- return 0; |
- sp->out_state=ososSoi; |
- sp->restart_index=0; |
- jpeg_std_error(&(sp->libjpeg_jpeg_error_mgr)); |
- sp->libjpeg_jpeg_error_mgr.output_message=OJPEGLibjpegJpegErrorMgrOutputMessage; |
- sp->libjpeg_jpeg_error_mgr.error_exit=OJPEGLibjpegJpegErrorMgrErrorExit; |
- sp->libjpeg_jpeg_decompress_struct.err=&(sp->libjpeg_jpeg_error_mgr); |
- sp->libjpeg_jpeg_decompress_struct.client_data=(void*)tif; |
- if (jpeg_create_decompress_encap(sp,&(sp->libjpeg_jpeg_decompress_struct))==0) |
- return(0); |
- sp->libjpeg_session_active=1; |
- sp->libjpeg_jpeg_source_mgr.bytes_in_buffer=0; |
- sp->libjpeg_jpeg_source_mgr.init_source=OJPEGLibjpegJpegSourceMgrInitSource; |
- sp->libjpeg_jpeg_source_mgr.fill_input_buffer=OJPEGLibjpegJpegSourceMgrFillInputBuffer; |
- sp->libjpeg_jpeg_source_mgr.skip_input_data=OJPEGLibjpegJpegSourceMgrSkipInputData; |
- sp->libjpeg_jpeg_source_mgr.resync_to_restart=OJPEGLibjpegJpegSourceMgrResyncToRestart; |
- sp->libjpeg_jpeg_source_mgr.term_source=OJPEGLibjpegJpegSourceMgrTermSource; |
- sp->libjpeg_jpeg_decompress_struct.src=&(sp->libjpeg_jpeg_source_mgr); |
- if (jpeg_read_header_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),1)==0) |
- return(0); |
- if ((sp->subsampling_force_desubsampling_inside_decompression==0) && (sp->samples_per_pixel_per_plane>1)) |
- { |
- sp->libjpeg_jpeg_decompress_struct.raw_data_out=1; |
-#if JPEG_LIB_VERSION >= 70 |
- sp->libjpeg_jpeg_decompress_struct.do_fancy_upsampling=FALSE; |
-#endif |
- sp->libjpeg_jpeg_query_style=0; |
- if (sp->subsampling_convert_log==0) |
- { |
- assert(sp->subsampling_convert_ycbcrbuf==0); |
- assert(sp->subsampling_convert_ycbcrimage==0); |
- sp->subsampling_convert_ylinelen=((sp->strile_width+sp->subsampling_hor*8-1)/(sp->subsampling_hor*8)*sp->subsampling_hor*8); |
- sp->subsampling_convert_ylines=sp->subsampling_ver*8; |
- sp->subsampling_convert_clinelen=sp->subsampling_convert_ylinelen/sp->subsampling_hor; |
- sp->subsampling_convert_clines=8; |
- sp->subsampling_convert_ybuflen=sp->subsampling_convert_ylinelen*sp->subsampling_convert_ylines; |
- sp->subsampling_convert_cbuflen=sp->subsampling_convert_clinelen*sp->subsampling_convert_clines; |
- sp->subsampling_convert_ycbcrbuflen=sp->subsampling_convert_ybuflen+2*sp->subsampling_convert_cbuflen; |
- sp->subsampling_convert_ycbcrbuf = (uint8*)_TIFFmalloc(sp->subsampling_convert_ycbcrbuflen); // add (uint8*) cast |
- if (sp->subsampling_convert_ycbcrbuf==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Out of memory"); |
- return(0); |
- } |
- sp->subsampling_convert_ybuf=sp->subsampling_convert_ycbcrbuf; |
- sp->subsampling_convert_cbbuf=sp->subsampling_convert_ybuf+sp->subsampling_convert_ybuflen; |
- sp->subsampling_convert_crbuf=sp->subsampling_convert_cbbuf+sp->subsampling_convert_cbuflen; |
- sp->subsampling_convert_ycbcrimagelen=3+sp->subsampling_convert_ylines+2*sp->subsampling_convert_clines; |
- sp->subsampling_convert_ycbcrimage = (uint8**)_TIFFmalloc(sp->subsampling_convert_ycbcrimagelen * sizeof(uint8*));// add (uint8**) cast |
- if (sp->subsampling_convert_ycbcrimage==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Out of memory"); |
- return(0); |
- } |
- m=sp->subsampling_convert_ycbcrimage; |
- *m++=(uint8*)(sp->subsampling_convert_ycbcrimage+3); |
- *m++=(uint8*)(sp->subsampling_convert_ycbcrimage+3+sp->subsampling_convert_ylines); |
- *m++=(uint8*)(sp->subsampling_convert_ycbcrimage+3+sp->subsampling_convert_ylines+sp->subsampling_convert_clines); |
- for (n=0; n<sp->subsampling_convert_ylines; n++) |
- *m++=sp->subsampling_convert_ybuf+n*sp->subsampling_convert_ylinelen; |
- for (n=0; n<sp->subsampling_convert_clines; n++) |
- *m++=sp->subsampling_convert_cbbuf+n*sp->subsampling_convert_clinelen; |
- for (n=0; n<sp->subsampling_convert_clines; n++) |
- *m++=sp->subsampling_convert_crbuf+n*sp->subsampling_convert_clinelen; |
- sp->subsampling_convert_clinelenout=((sp->strile_width+sp->subsampling_hor-1)/sp->subsampling_hor); |
- sp->subsampling_convert_state=0; |
- sp->bytes_per_line=sp->subsampling_convert_clinelenout*(sp->subsampling_ver*sp->subsampling_hor+2); |
- sp->lines_per_strile=((sp->strile_length+sp->subsampling_ver-1)/sp->subsampling_ver); |
- sp->subsampling_convert_log=1; |
- } |
- } |
- else |
- { |
- sp->libjpeg_jpeg_decompress_struct.jpeg_color_space=JCS_UNKNOWN; |
- sp->libjpeg_jpeg_decompress_struct.out_color_space=JCS_UNKNOWN; |
- sp->libjpeg_jpeg_query_style=1; |
- sp->bytes_per_line=sp->samples_per_pixel_per_plane*sp->strile_width; |
- sp->lines_per_strile=sp->strile_length; |
- } |
- if (jpeg_start_decompress_encap(sp,&(sp->libjpeg_jpeg_decompress_struct))==0) |
- return(0); |
- sp->writeheader_done=1; |
- return(1); |
-} |
- |
-static void |
-OJPEGLibjpegSessionAbort(TIFF* tif) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- assert(sp->libjpeg_session_active!=0); |
- jpeg_destroy((jpeg_common_struct*)(&(sp->libjpeg_jpeg_decompress_struct))); |
- sp->libjpeg_session_active=0; |
-} |
- |
-static int |
-OJPEGReadHeaderInfoSec(TIFF* tif) |
-{ |
- static const char module[]="OJPEGReadHeaderInfoSec"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8 m; |
- uint16 n; |
- uint8 o; |
- if (sp->file_size==0) |
- sp->file_size=TIFFGetFileSize(tif); |
- if (sp->jpeg_interchange_format!=0) |
- { |
- if (sp->jpeg_interchange_format>=sp->file_size) |
- { |
- sp->jpeg_interchange_format=0; |
- sp->jpeg_interchange_format_length=0; |
- } |
- else |
- { |
- if ((sp->jpeg_interchange_format_length==0) || (sp->jpeg_interchange_format+sp->jpeg_interchange_format_length>sp->file_size)) |
- sp->jpeg_interchange_format_length=sp->file_size-sp->jpeg_interchange_format; |
- } |
- } |
- sp->in_buffer_source=osibsNotSetYet; |
- sp->in_buffer_next_strile=0; |
- sp->in_buffer_strile_count=tif->tif_dir.td_nstrips; |
- sp->in_buffer_file_togo=0; |
- sp->in_buffer_togo=0; |
- do |
- { |
- if (OJPEGReadBytePeek(sp,&m)==0) |
- return(0); |
- if (m!=255) |
- break; |
- OJPEGReadByteAdvance(sp); |
- do |
- { |
- if (OJPEGReadByte(sp,&m)==0) |
- return(0); |
- } while(m==255); |
- switch(m) |
- { |
- case JPEG_MARKER_SOI: |
- /* this type of marker has no data, and should be skipped */ |
- break; |
- case JPEG_MARKER_COM: |
- case JPEG_MARKER_APP0: |
- case JPEG_MARKER_APP0+1: |
- case JPEG_MARKER_APP0+2: |
- case JPEG_MARKER_APP0+3: |
- case JPEG_MARKER_APP0+4: |
- case JPEG_MARKER_APP0+5: |
- case JPEG_MARKER_APP0+6: |
- case JPEG_MARKER_APP0+7: |
- case JPEG_MARKER_APP0+8: |
- case JPEG_MARKER_APP0+9: |
- case JPEG_MARKER_APP0+10: |
- case JPEG_MARKER_APP0+11: |
- case JPEG_MARKER_APP0+12: |
- case JPEG_MARKER_APP0+13: |
- case JPEG_MARKER_APP0+14: |
- case JPEG_MARKER_APP0+15: |
- /* this type of marker has data, but it has no use to us (and no place here) and should be skipped */ |
- if (OJPEGReadWord(sp,&n)==0) |
- return(0); |
- if (n<2) |
- { |
- if (sp->subsamplingcorrect==0) |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JPEG data"); |
- return(0); |
- } |
- if (n>2) |
- OJPEGReadSkip(sp,n-2); |
- break; |
- case JPEG_MARKER_DRI: |
- if (OJPEGReadHeaderInfoSecStreamDri(tif)==0) |
- return(0); |
- break; |
- case JPEG_MARKER_DQT: |
- if (OJPEGReadHeaderInfoSecStreamDqt(tif)==0) |
- return(0); |
- break; |
- case JPEG_MARKER_DHT: |
- if (OJPEGReadHeaderInfoSecStreamDht(tif)==0) |
- return(0); |
- break; |
- case JPEG_MARKER_SOF0: |
- case JPEG_MARKER_SOF1: |
- case JPEG_MARKER_SOF3: |
- if (OJPEGReadHeaderInfoSecStreamSof(tif,m)==0) |
- return(0); |
- if (sp->subsamplingcorrect!=0) |
- return(1); |
- break; |
- case JPEG_MARKER_SOS: |
- if (sp->subsamplingcorrect!=0) |
- return(1); |
- assert(sp->plane_sample_offset==0); |
- if (OJPEGReadHeaderInfoSecStreamSos(tif)==0) |
- return(0); |
- break; |
- default: |
- TIFFErrorExt(tif->tif_clientdata,module,"Unknown marker type %d in JPEG data",m); |
- return(0); |
- } |
- } while(m!=JPEG_MARKER_SOS); |
- if (sp->subsamplingcorrect) |
- return(1); |
- if (sp->sof_log==0) |
- { |
- if (OJPEGReadHeaderInfoSecTablesQTable(tif)==0) |
- return(0); |
- sp->sof_marker_id=JPEG_MARKER_SOF0; |
- for (o=0; o<sp->samples_per_pixel; o++) |
- sp->sof_c[o]=o; |
- sp->sof_hv[0]=((sp->subsampling_hor<<4)|sp->subsampling_ver); |
- for (o=1; o<sp->samples_per_pixel; o++) |
- sp->sof_hv[o]=17; |
- sp->sof_x=sp->strile_width; |
- sp->sof_y=sp->strile_length_total; |
- sp->sof_log=1; |
- if (OJPEGReadHeaderInfoSecTablesDcTable(tif)==0) |
- return(0); |
- if (OJPEGReadHeaderInfoSecTablesAcTable(tif)==0) |
- return(0); |
- for (o=1; o<sp->samples_per_pixel; o++) |
- sp->sos_cs[o]=o; |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGReadHeaderInfoSecStreamDri(TIFF* tif) |
-{ |
- /* this could easilly cause trouble in some cases... but no such cases have occured sofar */ |
- static const char module[]="OJPEGReadHeaderInfoSecStreamDri"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint16 m; |
- if (OJPEGReadWord(sp,&m)==0) |
- return(0); |
- if (m!=4) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DRI marker in JPEG data"); |
- return(0); |
- } |
- if (OJPEGReadWord(sp,&m)==0) |
- return(0); |
- sp->restart_interval=m; |
- return(1); |
-} |
- |
-static int |
-OJPEGReadHeaderInfoSecStreamDqt(TIFF* tif) |
-{ |
- /* this is a table marker, and it is to be saved as a whole for exact pushing on the jpeg stream later on */ |
- static const char module[]="OJPEGReadHeaderInfoSecStreamDqt"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint16 m; |
- uint32 na; |
- uint8* nb; |
- uint8 o; |
- if (OJPEGReadWord(sp,&m)==0) |
- return(0); |
- if (m<=2) |
- { |
- if (sp->subsamplingcorrect==0) |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DQT marker in JPEG data"); |
- return(0); |
- } |
- if (sp->subsamplingcorrect!=0) |
- OJPEGReadSkip(sp,m-2); |
- else |
- { |
- m-=2; |
- do |
- { |
- if (m<65) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DQT marker in JPEG data"); |
- return(0); |
- } |
- na = sizeof(uint32) + 69; |
- nb = (uint8*)_TIFFmalloc(na); // add (uint8*) cast |
- if (nb == 0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Out of memory"); |
- return(0); |
- } |
- *(uint32*)nb=na; |
- nb[sizeof(uint32)]=255; |
- nb[sizeof(uint32)+1]=JPEG_MARKER_DQT; |
- nb[sizeof(uint32)+2]=0; |
- nb[sizeof(uint32)+3]=67; |
- if (OJPEGReadBlock(sp,65,&nb[sizeof(uint32)+4])==0) { |
- _TIFFfree(nb); |
- return(0); |
- } |
- o=nb[sizeof(uint32)+4]&15; |
- if (3<o) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DQT marker in JPEG data"); |
- _TIFFfree(nb); |
- return(0); |
- } |
- if (sp->qtable[o]!=0) |
- _TIFFfree(sp->qtable[o]); |
- sp->qtable[o]=nb; |
- m-=65; |
- } while(m>0); |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGReadHeaderInfoSecStreamDht(TIFF* tif) |
-{ |
- /* this is a table marker, and it is to be saved as a whole for exact pushing on the jpeg stream later on */ |
- /* TODO: the following assumes there is only one table in this marker... but i'm not quite sure that assumption is guaranteed correct */ |
- static const char module[]="OJPEGReadHeaderInfoSecStreamDht"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint16 m; |
- uint32 na; |
- uint8* nb; |
- uint8 o; |
- if (OJPEGReadWord(sp,&m)==0) |
- return(0); |
- if (m<=2) |
- { |
- if (sp->subsamplingcorrect==0) |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DHT marker in JPEG data"); |
- return(0); |
- } |
- if (sp->subsamplingcorrect!=0) |
- { |
- OJPEGReadSkip(sp,m-2); |
- } |
- else |
- { |
- na = sizeof(uint32) + 2 + m; |
- nb = (uint8*)_TIFFmalloc(na); // add (uint8*) cast |
- if (nb == 0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Out of memory"); |
- return(0); |
- } |
- *(uint32*)nb=na; |
- nb[sizeof(uint32)]=255; |
- nb[sizeof(uint32)+1]=JPEG_MARKER_DHT; |
- nb[sizeof(uint32)+2]=(m>>8); |
- nb[sizeof(uint32)+3]=(m&255); |
- if (OJPEGReadBlock(sp,m-2,&nb[sizeof(uint32)+4])==0) |
- return(0); |
- o=nb[sizeof(uint32)+4]; |
- if ((o&240)==0) |
- { |
- if (3<o) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DHT marker in JPEG data"); |
- return(0); |
- } |
- if (sp->dctable[o]!=0) |
- _TIFFfree(sp->dctable[o]); |
- sp->dctable[o]=nb; |
- } |
- else |
- { |
- if ((o&240)!=16) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DHT marker in JPEG data"); |
- return(0); |
- } |
- o&=15; |
- if (3<o) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt DHT marker in JPEG data"); |
- return(0); |
- } |
- if (sp->actable[o]!=0) |
- _TIFFfree(sp->actable[o]); |
- sp->actable[o]=nb; |
- } |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGReadHeaderInfoSecStreamSof(TIFF* tif, uint8 marker_id) |
-{ |
- /* this marker needs to be checked, and part of its data needs to be saved for regeneration later on */ |
- static const char module[]="OJPEGReadHeaderInfoSecStreamSof"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint16 m; |
- uint16 n; |
- uint8 o; |
- uint16 p; |
- uint16 q; |
- if (sp->sof_log!=0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JPEG data"); |
- return(0); |
- } |
- if (sp->subsamplingcorrect==0) |
- sp->sof_marker_id=marker_id; |
- /* Lf: data length */ |
- if (OJPEGReadWord(sp,&m)==0) |
- return(0); |
- if (m<11) |
- { |
- if (sp->subsamplingcorrect==0) |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOF marker in JPEG data"); |
- return(0); |
- } |
- m-=8; |
- if (m%3!=0) |
- { |
- if (sp->subsamplingcorrect==0) |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOF marker in JPEG data"); |
- return(0); |
- } |
- n=m/3; |
- if (sp->subsamplingcorrect==0) |
- { |
- if (n!=sp->samples_per_pixel) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected number of samples"); |
- return(0); |
- } |
- } |
- /* P: Sample precision */ |
- if (OJPEGReadByte(sp,&o)==0) |
- return(0); |
- if (o!=8) |
- { |
- if (sp->subsamplingcorrect==0) |
- TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected number of bits per sample"); |
- return(0); |
- } |
- /* Y: Number of lines, X: Number of samples per line */ |
- if (sp->subsamplingcorrect) |
- OJPEGReadSkip(sp,4); |
- else |
- { |
- /* Y: Number of lines */ |
- if (OJPEGReadWord(sp,&p)==0) |
- return(0); |
- if (((uint32)p<sp->image_length) && ((uint32)p<sp->strile_length_total)) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected height"); |
- return(0); |
- } |
- sp->sof_y=p; |
- /* X: Number of samples per line */ |
- if (OJPEGReadWord(sp,&p)==0) |
- return(0); |
- if (((uint32)p<sp->image_width) && ((uint32)p<sp->strile_width)) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected width"); |
- return(0); |
- } |
- if ((uint32)p>sp->strile_width) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data image width exceeds expected image width"); |
- return(0); |
- } |
- sp->sof_x=p; |
- } |
- /* Nf: Number of image components in frame */ |
- if (OJPEGReadByte(sp,&o)==0) |
- return(0); |
- if (o!=n) |
- { |
- if (sp->subsamplingcorrect==0) |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOF marker in JPEG data"); |
- return(0); |
- } |
- /* per component stuff */ |
- /* TODO: double-check that flow implies that n cannot be as big as to make us overflow sof_c, sof_hv and sof_tq arrays */ |
- for (q=0; q<n; q++) |
- { |
- /* C: Component identifier */ |
- if (OJPEGReadByte(sp,&o)==0) |
- return(0); |
- if (sp->subsamplingcorrect==0) |
- sp->sof_c[q]=o; |
- /* H: Horizontal sampling factor, and V: Vertical sampling factor */ |
- if (OJPEGReadByte(sp,&o)==0) |
- return(0); |
- if (sp->subsamplingcorrect!=0) |
- { |
- if (q==0) |
- { |
- sp->subsampling_hor=(o>>4); |
- sp->subsampling_ver=(o&15); |
- if (((sp->subsampling_hor!=1) && (sp->subsampling_hor!=2) && (sp->subsampling_hor!=4)) || |
- ((sp->subsampling_ver!=1) && (sp->subsampling_ver!=2) && (sp->subsampling_ver!=4))) |
- sp->subsampling_force_desubsampling_inside_decompression=1; |
- } |
- else |
- { |
- if (o!=17) |
- sp->subsampling_force_desubsampling_inside_decompression=1; |
- } |
- } |
- else |
- { |
- sp->sof_hv[q]=o; |
- if (sp->subsampling_force_desubsampling_inside_decompression==0) |
- { |
- if (q==0) |
- { |
- if (o!=((sp->subsampling_hor<<4)|sp->subsampling_ver)) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected subsampling values"); |
- return(0); |
- } |
- } |
- else |
- { |
- if (o!=17) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"JPEG compressed data indicates unexpected subsampling values"); |
- return(0); |
- } |
- } |
- } |
- } |
- /* Tq: Quantization table destination selector */ |
- if (OJPEGReadByte(sp,&o)==0) |
- return(0); |
- if (sp->subsamplingcorrect==0) |
- sp->sof_tq[q]=o; |
- } |
- if (sp->subsamplingcorrect==0) |
- sp->sof_log=1; |
- return(1); |
-} |
- |
-static int |
-OJPEGReadHeaderInfoSecStreamSos(TIFF* tif) |
-{ |
- /* this marker needs to be checked, and part of its data needs to be saved for regeneration later on */ |
- static const char module[]="OJPEGReadHeaderInfoSecStreamSos"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint16 m; |
- uint8 n; |
- uint8 o; |
- assert(sp->subsamplingcorrect==0); |
- if (sp->sof_log==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOS marker in JPEG data"); |
- return(0); |
- } |
- /* Ls */ |
- if (OJPEGReadWord(sp,&m)==0) |
- return(0); |
- if (m!=6+sp->samples_per_pixel_per_plane*2) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOS marker in JPEG data"); |
- return(0); |
- } |
- /* Ns */ |
- if (OJPEGReadByte(sp,&n)==0) |
- return(0); |
- if (n!=sp->samples_per_pixel_per_plane) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt SOS marker in JPEG data"); |
- return(0); |
- } |
- /* Cs, Td, and Ta */ |
- for (o=0; o<sp->samples_per_pixel_per_plane; o++) |
- { |
- /* Cs */ |
- if (OJPEGReadByte(sp,&n)==0) |
- return(0); |
- sp->sos_cs[sp->plane_sample_offset+o]=n; |
- /* Td and Ta */ |
- if (OJPEGReadByte(sp,&n)==0) |
- return(0); |
- sp->sos_tda[sp->plane_sample_offset+o]=n; |
- } |
- /* skip Ss, Se, Ah, en Al -> no check, as per Tom Lane recommendation, as per LibJpeg source */ |
- OJPEGReadSkip(sp,3); |
- return(1); |
-} |
- |
-static int |
-OJPEGReadHeaderInfoSecTablesQTable(TIFF* tif) |
-{ |
- static const char module[]="OJPEGReadHeaderInfoSecTablesQTable"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8 m; |
- uint8 n; |
- uint32 oa; |
- uint8* ob; |
- uint32 p; |
- if (sp->qtable_offset[0]==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Missing JPEG tables"); |
- return(0); |
- } |
- sp->in_buffer_file_pos_log=0; |
- for (m=0; m<sp->samples_per_pixel; m++) |
- { |
- if ((sp->qtable_offset[m]!=0) && ((m==0) || (sp->qtable_offset[m]!=sp->qtable_offset[m-1]))) |
- { |
- for (n=0; n<m-1; n++) |
- { |
- if (sp->qtable_offset[m]==sp->qtable_offset[n]) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JpegQTables tag value"); |
- return(0); |
- } |
- } |
- oa=sizeof(uint32)+69; |
- ob = (uint8*)_TIFFmalloc(oa); // add (uint8*) cast |
- if (ob==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Out of memory"); |
- return(0); |
- } |
- *(uint32*)ob=oa; |
- ob[sizeof(uint32)]=255; |
- ob[sizeof(uint32)+1]=JPEG_MARKER_DQT; |
- ob[sizeof(uint32)+2]=0; |
- ob[sizeof(uint32)+3]=67; |
- ob[sizeof(uint32)+4]=m; |
- TIFFSeekFile(tif,sp->qtable_offset[m],SEEK_SET); |
- p=(uint32)TIFFReadFile(tif,&ob[sizeof(uint32)+5],64); |
- if (p!=64) |
- return(0); |
- sp->qtable[m]=ob; |
- sp->sof_tq[m]=m; |
- } |
- else |
- sp->sof_tq[m]=sp->sof_tq[m-1]; |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGReadHeaderInfoSecTablesDcTable(TIFF* tif) |
-{ |
- static const char module[]="OJPEGReadHeaderInfoSecTablesDcTable"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8 m; |
- uint8 n; |
- uint8 o[16]; |
- uint32 p; |
- uint32 q; |
- uint32 ra; |
- uint8* rb; |
- if (sp->dctable_offset[0]==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Missing JPEG tables"); |
- return(0); |
- } |
- sp->in_buffer_file_pos_log=0; |
- for (m=0; m<sp->samples_per_pixel; m++) |
- { |
- if ((sp->dctable_offset[m]!=0) && ((m==0) || (sp->dctable_offset[m]!=sp->dctable_offset[m-1]))) |
- { |
- for (n=0; n<m-1; n++) |
- { |
- if (sp->dctable_offset[m]==sp->dctable_offset[n]) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JpegDcTables tag value"); |
- return(0); |
- } |
- } |
- TIFFSeekFile(tif,sp->dctable_offset[m],SEEK_SET); |
- p=(uint32)TIFFReadFile(tif,o,16); |
- if (p!=16) |
- return(0); |
- q=0; |
- for (n=0; n<16; n++) |
- q+=o[n]; |
- ra=sizeof(uint32)+21+q; |
- rb = (uint8*)_TIFFmalloc(ra); // add (uint8*) cast |
- if (rb==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Out of memory"); |
- return(0); |
- } |
- *(uint32*)rb=ra; |
- rb[sizeof(uint32)]=255; |
- rb[sizeof(uint32)+1]=JPEG_MARKER_DHT; |
- rb[sizeof(uint32)+2]=((19+q)>>8); |
- rb[sizeof(uint32)+3]=((19+q)&255); |
- rb[sizeof(uint32)+4]=m; |
- for (n=0; n<16; n++) |
- rb[sizeof(uint32)+5+n]=o[n]; |
- p=(uint32)TIFFReadFile(tif,&(rb[sizeof(uint32)+21]),q); |
- if (p!=q) |
- return(0); |
- sp->dctable[m]=rb; |
- sp->sos_tda[m]=(m<<4); |
- } |
- else |
- sp->sos_tda[m]=sp->sos_tda[m-1]; |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGReadHeaderInfoSecTablesAcTable(TIFF* tif) |
-{ |
- static const char module[]="OJPEGReadHeaderInfoSecTablesAcTable"; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8 m; |
- uint8 n; |
- uint8 o[16]; |
- uint32 p; |
- uint32 q; |
- uint32 ra; |
- uint8* rb; |
- if (sp->actable_offset[0]==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Missing JPEG tables"); |
- return(0); |
- } |
- sp->in_buffer_file_pos_log=0; |
- for (m=0; m<sp->samples_per_pixel; m++) |
- { |
- if ((sp->actable_offset[m]!=0) && ((m==0) || (sp->actable_offset[m]!=sp->actable_offset[m-1]))) |
- { |
- for (n=0; n<m-1; n++) |
- { |
- if (sp->actable_offset[m]==sp->actable_offset[n]) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Corrupt JpegAcTables tag value"); |
- return(0); |
- } |
- } |
- TIFFSeekFile(tif,sp->actable_offset[m],SEEK_SET); |
- p=(uint32)TIFFReadFile(tif,o,16); |
- if (p!=16) |
- return(0); |
- q=0; |
- for (n=0; n<16; n++) |
- q+=o[n]; |
- ra=sizeof(uint32)+21+q; |
- rb = (uint8*)_TIFFmalloc(ra); // add (uint8*) cast |
- if (rb==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,module,"Out of memory"); |
- return(0); |
- } |
- *(uint32*)rb=ra; |
- rb[sizeof(uint32)]=255; |
- rb[sizeof(uint32)+1]=JPEG_MARKER_DHT; |
- rb[sizeof(uint32)+2]=((19+q)>>8); |
- rb[sizeof(uint32)+3]=((19+q)&255); |
- rb[sizeof(uint32)+4]=(16|m); |
- for (n=0; n<16; n++) |
- rb[sizeof(uint32)+5+n]=o[n]; |
- p=(uint32)TIFFReadFile(tif,&(rb[sizeof(uint32)+21]),q); |
- if (p!=q) |
- return(0); |
- sp->actable[m]=rb; |
- sp->sos_tda[m]=(sp->sos_tda[m]|m); |
- } |
- else |
- sp->sos_tda[m]=(sp->sos_tda[m]|(sp->sos_tda[m-1]&15)); |
- } |
- return(1); |
-} |
- |
-static int |
-OJPEGReadBufferFill(OJPEGState* sp) |
-{ |
- uint16 m; |
- tmsize_t n; |
- /* TODO: double-check: when subsamplingcorrect is set, no call to TIFFErrorExt or TIFFWarningExt should be made |
- * in any other case, seek or read errors should be passed through */ |
- do |
- { |
- if (sp->in_buffer_file_togo!=0) |
- { |
- if (sp->in_buffer_file_pos_log==0) |
- { |
- TIFFSeekFile(sp->tif,sp->in_buffer_file_pos,SEEK_SET); |
- sp->in_buffer_file_pos_log=1; |
- } |
- m=OJPEG_BUFFER; |
- if ((uint64)m>sp->in_buffer_file_togo) |
- m=(uint16)sp->in_buffer_file_togo; |
- n=TIFFReadFile(sp->tif,sp->in_buffer,(tmsize_t)m); |
- if (n==0) |
- return(0); |
- assert(n>0); |
- assert(n<=OJPEG_BUFFER); |
- assert(n<65536); |
- assert((uint64)n<=sp->in_buffer_file_togo); |
- m=(uint16)n; |
- sp->in_buffer_togo=m; |
- sp->in_buffer_cur=sp->in_buffer; |
- sp->in_buffer_file_togo-=m; |
- sp->in_buffer_file_pos+=m; |
- break; |
- } |
- sp->in_buffer_file_pos_log=0; |
- switch(sp->in_buffer_source) |
- { |
- case osibsNotSetYet: |
- if (sp->jpeg_interchange_format!=0) |
- { |
- sp->in_buffer_file_pos=sp->jpeg_interchange_format; |
- sp->in_buffer_file_togo=sp->jpeg_interchange_format_length; |
- } |
- sp->in_buffer_source=osibsJpegInterchangeFormat; |
- break; |
- case osibsJpegInterchangeFormat: |
- sp->in_buffer_source=osibsStrile; |
- case osibsStrile: |
- if (!_TIFFFillStriles( sp->tif ) |
- || sp->tif->tif_dir.td_stripoffset == NULL |
- || sp->tif->tif_dir.td_stripbytecount == NULL) |
- return 0; |
- |
- if (sp->in_buffer_next_strile==sp->in_buffer_strile_count) |
- sp->in_buffer_source=osibsEof; |
- else |
- { |
- sp->in_buffer_file_pos=sp->tif->tif_dir.td_stripoffset[sp->in_buffer_next_strile]; |
- if (sp->in_buffer_file_pos!=0) |
- { |
- if (sp->in_buffer_file_pos>=sp->file_size) |
- sp->in_buffer_file_pos=0; |
- else if (sp->tif->tif_dir.td_stripbytecount==NULL) |
- sp->in_buffer_file_togo=sp->file_size-sp->in_buffer_file_pos; |
- else |
- { |
- if (sp->tif->tif_dir.td_stripbytecount == 0) { |
- TIFFErrorExt(sp->tif->tif_clientdata,sp->tif->tif_name,"Strip byte counts are missing"); |
- return(0); |
- } |
- sp->in_buffer_file_togo=sp->tif->tif_dir.td_stripbytecount[sp->in_buffer_next_strile]; |
- if (sp->in_buffer_file_togo==0) |
- sp->in_buffer_file_pos=0; |
- else if (sp->in_buffer_file_pos+sp->in_buffer_file_togo>sp->file_size) |
- sp->in_buffer_file_togo=sp->file_size-sp->in_buffer_file_pos; |
- } |
- } |
- sp->in_buffer_next_strile++; |
- } |
- break; |
- default: |
- return(0); |
- } |
- } while (1); |
- return(1); |
-} |
- |
-static int |
-OJPEGReadByte(OJPEGState* sp, uint8* byte) |
-{ |
- if (sp->in_buffer_togo==0) |
- { |
- if (OJPEGReadBufferFill(sp)==0) |
- return(0); |
- assert(sp->in_buffer_togo>0); |
- } |
- *byte=*(sp->in_buffer_cur); |
- sp->in_buffer_cur++; |
- sp->in_buffer_togo--; |
- return(1); |
-} |
- |
-static int |
-OJPEGReadBytePeek(OJPEGState* sp, uint8* byte) |
-{ |
- if (sp->in_buffer_togo==0) |
- { |
- if (OJPEGReadBufferFill(sp)==0) |
- return(0); |
- assert(sp->in_buffer_togo>0); |
- } |
- *byte=*(sp->in_buffer_cur); |
- return(1); |
-} |
- |
-static void |
-OJPEGReadByteAdvance(OJPEGState* sp) |
-{ |
- assert(sp->in_buffer_togo>0); |
- sp->in_buffer_cur++; |
- sp->in_buffer_togo--; |
-} |
- |
-static int |
-OJPEGReadWord(OJPEGState* sp, uint16* word) |
-{ |
- uint8 m; |
- if (OJPEGReadByte(sp,&m)==0) |
- return(0); |
- *word=(m<<8); |
- if (OJPEGReadByte(sp,&m)==0) |
- return(0); |
- *word|=m; |
- return(1); |
-} |
- |
-static int |
-OJPEGReadBlock(OJPEGState* sp, uint16 len, void* mem) |
-{ |
- uint16 mlen; |
- uint8* mmem; |
- uint16 n; |
- assert(len>0); |
- mlen=len; |
- mmem = (uint8*)mem; // add (uint8*) cast |
- do |
- { |
- if (sp->in_buffer_togo==0) |
- { |
- if (OJPEGReadBufferFill(sp)==0) |
- return(0); |
- assert(sp->in_buffer_togo>0); |
- } |
- n=mlen; |
- if (n>sp->in_buffer_togo) |
- n=sp->in_buffer_togo; |
- _TIFFmemcpy(mmem,sp->in_buffer_cur,n); |
- sp->in_buffer_cur+=n; |
- sp->in_buffer_togo-=n; |
- mlen-=n; |
- mmem+=n; |
- } while(mlen>0); |
- return(1); |
-} |
- |
-static void |
-OJPEGReadSkip(OJPEGState* sp, uint16 len) |
-{ |
- uint16 m; |
- uint16 n; |
- m=len; |
- n=m; |
- if (n>sp->in_buffer_togo) |
- n=sp->in_buffer_togo; |
- sp->in_buffer_cur+=n; |
- sp->in_buffer_togo-=n; |
- m-=n; |
- if (m>0) |
- { |
- assert(sp->in_buffer_togo==0); |
- n=m; |
- if ((uint64)n>sp->in_buffer_file_togo) |
- n=(uint16)sp->in_buffer_file_togo; |
- sp->in_buffer_file_pos+=n; |
- sp->in_buffer_file_togo-=n; |
- sp->in_buffer_file_pos_log=0; |
- /* we don't skip past jpeginterchangeformat/strile block... |
- * if that is asked from us, we're dealing with totally bazurk |
- * data anyway, and we've not seen this happening on any |
- * testfile, so we might as well likely cause some other |
- * meaningless error to be passed at some later time |
- */ |
- } |
-} |
- |
-static int |
-OJPEGWriteStream(TIFF* tif, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- *len=0; |
- do |
- { |
- assert(sp->out_state<=ososEoi); |
- switch(sp->out_state) |
- { |
- case ososSoi: |
- OJPEGWriteStreamSoi(tif,mem,len); |
- break; |
- case ososQTable0: |
- OJPEGWriteStreamQTable(tif,0,mem,len); |
- break; |
- case ososQTable1: |
- OJPEGWriteStreamQTable(tif,1,mem,len); |
- break; |
- case ososQTable2: |
- OJPEGWriteStreamQTable(tif,2,mem,len); |
- break; |
- case ososQTable3: |
- OJPEGWriteStreamQTable(tif,3,mem,len); |
- break; |
- case ososDcTable0: |
- OJPEGWriteStreamDcTable(tif,0,mem,len); |
- break; |
- case ososDcTable1: |
- OJPEGWriteStreamDcTable(tif,1,mem,len); |
- break; |
- case ososDcTable2: |
- OJPEGWriteStreamDcTable(tif,2,mem,len); |
- break; |
- case ososDcTable3: |
- OJPEGWriteStreamDcTable(tif,3,mem,len); |
- break; |
- case ososAcTable0: |
- OJPEGWriteStreamAcTable(tif,0,mem,len); |
- break; |
- case ososAcTable1: |
- OJPEGWriteStreamAcTable(tif,1,mem,len); |
- break; |
- case ososAcTable2: |
- OJPEGWriteStreamAcTable(tif,2,mem,len); |
- break; |
- case ososAcTable3: |
- OJPEGWriteStreamAcTable(tif,3,mem,len); |
- break; |
- case ososDri: |
- OJPEGWriteStreamDri(tif,mem,len); |
- break; |
- case ososSof: |
- OJPEGWriteStreamSof(tif,mem,len); |
- break; |
- case ososSos: |
- OJPEGWriteStreamSos(tif,mem,len); |
- break; |
- case ososCompressed: |
- if (OJPEGWriteStreamCompressed(tif,mem,len)==0) |
- return(0); |
- break; |
- case ososRst: |
- OJPEGWriteStreamRst(tif,mem,len); |
- break; |
- case ososEoi: |
- OJPEGWriteStreamEoi(tif,mem,len); |
- break; |
- } |
- } while (*len==0); |
- return(1); |
-} |
- |
-static void |
-OJPEGWriteStreamSoi(TIFF* tif, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- assert(OJPEG_BUFFER>=2); |
- sp->out_buffer[0]=255; |
- sp->out_buffer[1]=JPEG_MARKER_SOI; |
- *len=2; |
- *mem=(void*)sp->out_buffer; |
- sp->out_state++; |
-} |
- |
-static void |
-OJPEGWriteStreamQTable(TIFF* tif, uint8 table_index, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- if (sp->qtable[table_index]!=0) |
- { |
- *mem=(void*)(sp->qtable[table_index]+sizeof(uint32)); |
- *len=*((uint32*)sp->qtable[table_index])-sizeof(uint32); |
- } |
- sp->out_state++; |
-} |
- |
-static void |
-OJPEGWriteStreamDcTable(TIFF* tif, uint8 table_index, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- if (sp->dctable[table_index]!=0) |
- { |
- *mem=(void*)(sp->dctable[table_index]+sizeof(uint32)); |
- *len=*((uint32*)sp->dctable[table_index])-sizeof(uint32); |
- } |
- sp->out_state++; |
-} |
- |
-static void |
-OJPEGWriteStreamAcTable(TIFF* tif, uint8 table_index, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- if (sp->actable[table_index]!=0) |
- { |
- *mem=(void*)(sp->actable[table_index]+sizeof(uint32)); |
- *len=*((uint32*)sp->actable[table_index])-sizeof(uint32); |
- } |
- sp->out_state++; |
-} |
- |
-static void |
-OJPEGWriteStreamDri(TIFF* tif, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- assert(OJPEG_BUFFER>=6); |
- if (sp->restart_interval!=0) |
- { |
- sp->out_buffer[0]=255; |
- sp->out_buffer[1]=JPEG_MARKER_DRI; |
- sp->out_buffer[2]=0; |
- sp->out_buffer[3]=4; |
- sp->out_buffer[4]=(sp->restart_interval>>8); |
- sp->out_buffer[5]=(sp->restart_interval&255); |
- *len=6; |
- *mem=(void*)sp->out_buffer; |
- } |
- sp->out_state++; |
-} |
- |
-static void |
-OJPEGWriteStreamSof(TIFF* tif, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8 m; |
- assert(OJPEG_BUFFER>=2+8+sp->samples_per_pixel_per_plane*3); |
- assert(255>=8+sp->samples_per_pixel_per_plane*3); |
- sp->out_buffer[0]=255; |
- sp->out_buffer[1]=sp->sof_marker_id; |
- /* Lf */ |
- sp->out_buffer[2]=0; |
- sp->out_buffer[3]=8+sp->samples_per_pixel_per_plane*3; |
- /* P */ |
- sp->out_buffer[4]=8; |
- /* Y */ |
- sp->out_buffer[5]=(sp->sof_y>>8); |
- sp->out_buffer[6]=(sp->sof_y&255); |
- /* X */ |
- sp->out_buffer[7]=(sp->sof_x>>8); |
- sp->out_buffer[8]=(sp->sof_x&255); |
- /* Nf */ |
- sp->out_buffer[9]=sp->samples_per_pixel_per_plane; |
- for (m=0; m<sp->samples_per_pixel_per_plane; m++) |
- { |
- /* C */ |
- sp->out_buffer[10+m*3]=sp->sof_c[sp->plane_sample_offset+m]; |
- /* H and V */ |
- sp->out_buffer[10+m*3+1]=sp->sof_hv[sp->plane_sample_offset+m]; |
- /* Tq */ |
- sp->out_buffer[10+m*3+2]=sp->sof_tq[sp->plane_sample_offset+m]; |
- } |
- *len=10+sp->samples_per_pixel_per_plane*3; |
- *mem=(void*)sp->out_buffer; |
- sp->out_state++; |
-} |
- |
-static void |
-OJPEGWriteStreamSos(TIFF* tif, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- uint8 m; |
- assert(OJPEG_BUFFER>=2+6+sp->samples_per_pixel_per_plane*2); |
- assert(255>=6+sp->samples_per_pixel_per_plane*2); |
- sp->out_buffer[0]=255; |
- sp->out_buffer[1]=JPEG_MARKER_SOS; |
- /* Ls */ |
- sp->out_buffer[2]=0; |
- sp->out_buffer[3]=6+sp->samples_per_pixel_per_plane*2; |
- /* Ns */ |
- sp->out_buffer[4]=sp->samples_per_pixel_per_plane; |
- for (m=0; m<sp->samples_per_pixel_per_plane; m++) |
- { |
- /* Cs */ |
- sp->out_buffer[5+m*2]=sp->sos_cs[sp->plane_sample_offset+m]; |
- /* Td and Ta */ |
- sp->out_buffer[5+m*2+1]=sp->sos_tda[sp->plane_sample_offset+m]; |
- } |
- /* Ss */ |
- sp->out_buffer[5+sp->samples_per_pixel_per_plane*2]=0; |
- /* Se */ |
- sp->out_buffer[5+sp->samples_per_pixel_per_plane*2+1]=63; |
- /* Ah and Al */ |
- sp->out_buffer[5+sp->samples_per_pixel_per_plane*2+2]=0; |
- *len=8+sp->samples_per_pixel_per_plane*2; |
- *mem=(void*)sp->out_buffer; |
- sp->out_state++; |
-} |
- |
-static int |
-OJPEGWriteStreamCompressed(TIFF* tif, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- if (sp->in_buffer_togo==0) |
- { |
- if (OJPEGReadBufferFill(sp)==0) |
- return(0); |
- assert(sp->in_buffer_togo>0); |
- } |
- *len=sp->in_buffer_togo; |
- *mem=(void*)sp->in_buffer_cur; |
- sp->in_buffer_togo=0; |
- if (sp->in_buffer_file_togo==0) |
- { |
- switch(sp->in_buffer_source) |
- { |
- case osibsStrile: |
- if (sp->in_buffer_next_strile<sp->in_buffer_strile_count) |
- sp->out_state=ososRst; |
- else |
- sp->out_state=ososEoi; |
- break; |
- case osibsEof: |
- sp->out_state=ososEoi; |
- break; |
- default: |
- break; |
- } |
- } |
- return(1); |
-} |
- |
-static void |
-OJPEGWriteStreamRst(TIFF* tif, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- assert(OJPEG_BUFFER>=2); |
- sp->out_buffer[0]=255; |
- sp->out_buffer[1]=JPEG_MARKER_RST0+sp->restart_index; |
- sp->restart_index++; |
- if (sp->restart_index==8) |
- sp->restart_index=0; |
- *len=2; |
- *mem=(void*)sp->out_buffer; |
- sp->out_state=ososCompressed; |
-} |
- |
-static void |
-OJPEGWriteStreamEoi(TIFF* tif, void** mem, uint32* len) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- assert(OJPEG_BUFFER>=2); |
- sp->out_buffer[0]=255; |
- sp->out_buffer[1]=JPEG_MARKER_EOI; |
- *len=2; |
- *mem=(void*)sp->out_buffer; |
-} |
- |
-#ifndef LIBJPEG_ENCAP_EXTERNAL |
-static int |
-jpeg_create_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo) |
-{ |
- return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_create_decompress(cinfo),1)); |
-} |
-#endif |
- |
-#ifndef LIBJPEG_ENCAP_EXTERNAL |
-static int |
-jpeg_read_header_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, uint8 require_image) |
-{ |
- return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_read_header(cinfo,require_image),1)); |
-} |
-#endif |
- |
-#ifndef LIBJPEG_ENCAP_EXTERNAL |
-static int |
-jpeg_start_decompress_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo) |
-{ |
- return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_start_decompress(cinfo),1)); |
-} |
-#endif |
- |
-#ifndef LIBJPEG_ENCAP_EXTERNAL |
-static int |
-jpeg_read_scanlines_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* scanlines, uint32 max_lines) |
-{ |
- return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_read_scanlines(cinfo,scanlines,max_lines),1)); |
-} |
-#endif |
- |
-#ifndef LIBJPEG_ENCAP_EXTERNAL |
-static int |
-jpeg_read_raw_data_encap(OJPEGState* sp, jpeg_decompress_struct* cinfo, void* data, uint32 max_lines) |
-{ |
- return(SETJMP(sp->exit_jmpbuf)?0:(jpeg_read_raw_data(cinfo,data,max_lines),1)); |
-} |
-#endif |
- |
-#ifndef LIBJPEG_ENCAP_EXTERNAL |
-static void |
-jpeg_encap_unwind(TIFF* tif) |
-{ |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- LONGJMP(sp->exit_jmpbuf,1); |
-} |
-#endif |
- |
-static void |
-OJPEGLibjpegJpegErrorMgrOutputMessage(jpeg_common_struct* cinfo) |
-{ |
- char buffer[JMSG_LENGTH_MAX]; |
- (*cinfo->err->format_message)(cinfo,buffer); |
- TIFFWarningExt(((TIFF*)(cinfo->client_data))->tif_clientdata,"LibJpeg","%s",buffer); |
-} |
- |
-static void |
-OJPEGLibjpegJpegErrorMgrErrorExit(jpeg_common_struct* cinfo) |
-{ |
- char buffer[JMSG_LENGTH_MAX]; |
- (*cinfo->err->format_message)(cinfo,buffer); |
- TIFFErrorExt(((TIFF*)(cinfo->client_data))->tif_clientdata,"LibJpeg","%s",buffer); |
- jpeg_encap_unwind((TIFF*)(cinfo->client_data)); |
-} |
- |
-static void |
-OJPEGLibjpegJpegSourceMgrInitSource(jpeg_decompress_struct* cinfo) |
-{ |
- (void)cinfo; |
-} |
- |
-static boolean |
-OJPEGLibjpegJpegSourceMgrFillInputBuffer(jpeg_decompress_struct* cinfo) |
-{ |
- TIFF* tif=(TIFF*)cinfo->client_data; |
- OJPEGState* sp=(OJPEGState*)tif->tif_data; |
- void* mem=0; |
- uint32 len=0U; |
- if (OJPEGWriteStream(tif,&mem,&len)==0) |
- { |
- TIFFErrorExt(tif->tif_clientdata,"LibJpeg","Premature end of JPEG data"); |
- jpeg_encap_unwind(tif); |
- } |
- sp->libjpeg_jpeg_source_mgr.bytes_in_buffer = len; |
- sp->libjpeg_jpeg_source_mgr.next_input_byte = (const JOCTET * )mem; // add (const JOCTET * ) cast |
- return(1); |
-} |
- |
-static void |
-OJPEGLibjpegJpegSourceMgrSkipInputData(jpeg_decompress_struct* cinfo, long num_bytes) |
-{ |
- TIFF* tif=(TIFF*)cinfo->client_data; |
- (void)num_bytes; |
- TIFFErrorExt(tif->tif_clientdata,"LibJpeg","Unexpected error"); |
- jpeg_encap_unwind(tif); |
-} |
- |
-static boolean |
-OJPEGLibjpegJpegSourceMgrResyncToRestart(jpeg_decompress_struct* cinfo, int desired) |
-{ |
- TIFF* tif=(TIFF*)cinfo->client_data; |
- (void)desired; |
- TIFFErrorExt(tif->tif_clientdata,"LibJpeg","Unexpected error"); |
- jpeg_encap_unwind(tif); |
- return(0); |
-} |
- |
-static void |
-OJPEGLibjpegJpegSourceMgrTermSource(jpeg_decompress_struct* cinfo) |
-{ |
- (void)cinfo; |
-} |
- |
-#endif |
- |
- |
-/* |
- * Local Variables: |
- * mode: c |
- * c-basic-offset: 8 |
- * fill-column: 78 |
- * End: |
- */ |
- |