mupdf - MuPDF PDF reader and library

Age	Commit message (Collapse)	Author
2017-07-04	Remove is_static from fz_new{,_icc}_colorspace.	Robin Watts
	No longer required, and causes leaks. Also, fix some reference counting problems with colorspaces.
2017-06-22	Add Color Management interface to MuPDF, with LCMS implementation.	Michael Vrhel
	This commit adds an interface for a color management engine to MuPDF, together with the internal changes required to use it. We also add an implementation of this interface using the LCMS2 library. This commit is the "lcms" development branch squashed to a single commit. The individual commits that make it up are as follows: ------ Add LCMS2 submodule. Add required source files to MSVC libthirdparty project. Plus changes to the Makefile. ------ Change name of libfont to libresources The library can hold things other than fonts including ICC profiles and eventually halftone screens etc. ------ Generate and include icc profiles on windows solution Makefile for linux needs to be updated ------ Initial cut at interface to little cms Methods for getting profile handles, link handles and transform buffers as well as individual colors. ------ Install ICC profiles from source When the source color space is an ICC profile install the ICC space. Use alternative color space if ICC is invalid. ------ Rename ICC resources The way that fontdump generates the names was causing some redundant prefix/suffix combinations. ------ Make resource ICC profiles usable This brings in the resource profiles for use with the target device. When mudraw is invoked with the icc color type, it will set up the target pixmap to have an icc based color space. ------ Make Default ICC color spaces not storable The ICC color spaces in the color context should not be put into the store. ICC color spaces that are contained in the source document are however storable. ------ Add in support for single color conversion This adds in the selection of the icc single color converter. Note that we may want to look at using the float conversion in lcms here since we are going from and to float. The down side is that the creation of such converters may be expensive. ------ Pixmap ICC conversion Also clean up and further simplify some of the code. Use common dst, src in function parameters instead of src, dst. ------ Add md5 calculation for profiles Compare md5 of source and destination. If they are the same set link as identity and do not bother creating link from cmm. ------ Initial attempt at adding links to store Next need to make sure I have all the dropping set up correctly and that the links are getting freed when we are all done with them. ------ Add drop for link Make sure that we drop the links when we are done with them. ------ Fix icc link store ref. counting + rendering intent The key allocations, rc and removal was wrong for the icc links. Also added in support on the graphic state for rendering intent. ------ Add ICC profiles to Makefile. ------ Move ICC profile loading to colorspace.c ------ Fix build on linux. ------ Use hexdump in creating icc profiles ------ First cut at CalRGB CalGray handling These color spaces are converted to equivalent ICC profiles when the drawing operation occurs. ToDo still is avoid creating brand new CalGray, CalRGB or ICC color spaces when we encounter the same object in the source file. Instead we should make use of the store. ------ Adding fz_color_params into device API Stroke and fill of paths and text which will have color rendering related settings including overprint, overprint mode, rendering intent and black point settings. Images have a fz_color_params member added to them. ------ Rendering intent support for graphic and text Graphic fills and strokes as well as text fill and strokes handle the rendering intent settings. This works through the display list. The parameters related to color rendering, ri, bp, op, opm are packed in the flags bits through the display list. To do: Add support for images and shadings. ------ Add support for rendering intent with images Required change to fill_image api, hence the large number of files touched. ------ Add support for shadings rendering intent and DeviceN This adds support for the rendering intent in shading fills. Also, adds in support for color management of DeviceN and Separation color spaces where the base space is defined to be ICC. ------ Add clamping proc to colorspace-imp.h In the head of mupdf, the index color values were not being clamped properly. I moved the clamping operation to be performed by a procedure in of the color space. The a, b values in LAB will need to include a range value for proper clamping as well as the ICC color space at some point. ------ Fix assert test with index images ------ Support for DeviceN images color managed The base space for DeviceN and separation images is now color managed when the ICC work flow is used. ------ Add DefaultGray etc to names.txt The DefaultGray, DefaultRGB, and DefaultCMYK settings in the pdf page resource dictionary need to be parsed and handled if present. ------ Remove methods for setting color space in context The methods that existed for setting the color spaces in the color space context were broken and we will not be changing them from their initial setting at startup. ------ Add front end support for default color spaces PDF can specify in the resource dictionary color spaces that should be used for DeviceGray, DeviceRGB and DeviceCMYK. This commit handles the extraction of these color spaces and passes them through the display list and gets them into a structure on a draw device (if one is used). Next step is to have the draw device make use of them. ------ Backend of default color spaces This handles the use of page level definitions for DefaultGray, DefaultRGB, DefaultCMYK in the draw device. The interface for the pixmap color conversion had to be expanded a bit to pass the default_cs object. This was needed due to the fact that the image could be DeviceN or Separation and have a base space that needs to be replaced by a page level Default color space. Tested this with a file that had two pages each with an common reference image object but different DefaultCMYK definitions in the page resource dictionary. Proper rendering was obtained. ------ Add icc support to band-writer and png output For image viewers that support icc profiles, it is important that we include the icc profile into those formats that support. Currently the only output format we have that supports it is PNG. But if we decide to do tiff, jpeg or psd those also support the embedding of icc profiles. ------ Work toward multithreading Each cloned context creates a new cmm context to reduce contention. This may not be optimal though as it may create conflicts in any shared store. ------ Add missing files. Failed to check in icc-imp.h and icc34.h ------ Fix default device color calls copy and paste errors. ------ Fixes ------ Fix clamping of lab colors The lab colors when used with the lab resource profile need to be properly clamped and scaled. ------ Turn off ICC create debug define ------ Fix memory leak issues ------ Set clamp proc in color context color spaces When NO_ICC is enabled there was an issue as the default spaces did not have the clamp proc (which was added in the lcms branch). ------ Fix several issues after rebase During rebase of the branch there were several issues that came up. In addition there was a fix related to the use of the lcms2 context branch that did not make it in for some reason. ------ Fix for fz_store_type structure changes ------ Fixes for multithreaded This fixes a few issues. One issue is that we can not be changing the input and output formatter for the links if they are being shared among threads. This adds the format as part of the link definition. Next step is to create a link clone operation in lcms so that we can readily create a different one with everything the same except the formatter. Also, this shares the profiles that exist in the color context among the threads. When a context is cloned, it will use the profiles in the current context but it will create a new cmm context.c ------ Fix NO_ICC issues There were a few issues that occurred when we compiled and ran with the NO_ICC setting. ------ Change CMM to use lower resolution tables in links The table resolution greatly affects the performance for some files. I don't see any significant color rendering issues going with a lower resolution. Selecting cmsFLAGS_LOWRESPRECALC uses a MLUT resolution of 17. This is going to be sufficient color wise and gives a large improvement performance wise especially for files where the color link creation is significant compared to the rendering. ------ Fix link key creation to populate alpha and bit depth. The store key for icc links needs to include the bit depth and if the transform has to handle an alpha value. This is needed due to the fact that we can't change the formatter when we are sharing links among different threads. ------ Pull in some MSVC 2005 fixes for lcms2 ------ Fix non-prototype prototype. ------ Miscellaneous typos, whitespace fixes. ------ Tidy colorspace creation API. Rather than pass a magic implementation reference count value (-1 for static, 1 for normal), pass a boolean "is_static" flag. This gives a nicer API (IMAO etc). ------ Make all colorspaces use an fz_buffer. ------ Fix internal naming of MSVC project file. ------ Fix some error handling. ------ Add some consts. ------ Tweak fz_color_params and fz_store_hash. Use uint8_t for fz_color_param entries - no need to use larger. Same change in fz_store_hash. This limits the size required for the hash table too. ------ Throw on errors, rather than returning NULL. fz_cmm_transform_pixmap should throw if it's fed pixmaps incompatible with its transforms. fz_cmm_new_ctx should throw if the cmm fails to initialise. ------ Ensure LCMS2_OBJs are built/linked using Makefile. Also ensure that ICC_OBJs are included. ------ Fix some unused variable warnings. ------ cs_params fixes. Use the ones that are passed. ------ fz_color_params tweaks. Make them const in many places. Cope with cs_params == NULL meaning default (i.e. fz_cs_param(ctx)). Minimise the places we call fz_cs_params(ctx). Consistently use cs_params rather than a mix of cs_param and cs_params. ------ Improve PDF color params handling. PDF allows different OP settings for strokes and fills. This means that either we need to keep separate entries in each fz_color_param structure for the stroke one or the fill one, OR we need to duplicate the fz_color_param structure. It seems neatest to do the latter (not least because this means we don't pass more information to each device function than it actually needs). Accordingly, we put an fz_color_param in each pdf_material. We update the code that reads ExtGStates to set the values appropriately. We take the opportunity to add support for the PDF 2.0 UseBlackPtComp option too. ------ Fix colorspace ref count problems. 1) Don't drop colorspace until we've finished using it. 2) Don't drop it twice. ------ Convert NULL deref into a thrown error. Seen with: mutool draw -D -o out.png ../tests_private/comparefiles/Bug689760.pdf We seem to have a pdf-cal space with no profile. Talk to Michael about this. ------ Avoid using colorspace names to distinguish colorspaces. Using strcmp is slow. ------ Cope with failure to parse default colorspaces during PDF page load. ------ Avoid SEGV due to to pdf_cal space with no profile. As seen in: tests_private/pdf/PDFIA1.7_SUBSET/CATX4879.pdf ------ Handle cases where base space of sep is pdf-cal We handled this for images, but not for solid fills. ------ Accelerate ICC color conversion. ------ Cope with indexed images in the color management. Some images (JPX images) come to the cm code still in the indexed color space. Their base space could be DevN so we need to cope with multiple base decodes. This continues the decode until we get to a space for which we can create an ICC link. ------ Ignore alpha presence in component count check ------ Eliminate recursion in fz_source_colorspace_cm. ------ Cope with bare ICCBased colorspace defs. Bug692137.pdf has ICCBased colorspaced definitions given directly as a stream, rather than as [ /ICCBased <stream reference> ] Acrobat copes with these, as does gs. We therefore update our code to cope too. Also, the PDF spec says that any problems found when reading the Default spaces should be ignored (or at least not to abort rendering). Update our code to do that too. ------ Tweak color converter logic for speed. When we are using an icc profile based conversion, avoid ever having to lookup the color converter for each conversion call; do it at the lookup stage. ------ Harden us against failures during ICC link creation. Seen with corrupted profiles. ------ Fix for handling alpha with lcms. Note that this currently maintains an alpha when it is present. We may need to do some work for the gray scale conversion to alpha mask. ------ Delay pdf-cal profile creation Put the creation of the pdf cal profile into the link creation function (rather than have it scattered). Also be robust in the condition of failure to create the profile. ------ Proper clamping with embedded CIELAB ICC profile If the ICC profiles alternate color space is LAB then use the LAB clamping proc. ------ Use the color space clamp when converting to base color spaces In many of the Ghent test files, we have a DeviceN image whose alternate color space is CIELAB. We need to make sure to use the CIELAB clamping operation in this case. ------ Make ICC runtime configurable. Add fz_icc_flowflow, fz_set_icc_workflow functions to read ICC workflow state, and set the ICC workflow state. The latter will throw an error if trying to enable ICC workflow in a NO_ICC build. Add -N flag to mutool to disable ICC. Incorporates build fixes from Michael. ------ Ensure fz_draw_fill_image uses the pixmap colorspace It appears that the image colorspace historically has been able to differ from the pixmap colorspace. While we've fixed the cases that we know about for this (see the previous commits), tweak fz_draw_fill_image to work the way it always has in the past. ------ Add support for output intent PDF documents can have an ICC profile defined in their Catalog which defines the output color space and the color space to use for one of the Device color spaces (e.g. DeviceGray, DeviceRGB or DeviceCMYK). ------ Catch errors in default color spaces Before setting the default color space contained in the file, make sure it is the correct type. Bug692213.pdf ------ Clamp to base space during sep color conversion This was the source of a problem when the base space was CIELAB. ------ Rename some functions to be more MuPDFy drop rather than free etc. ------ Fix "casting away const" warning. srcv is a const *. Do the clamping operation on src_map (the same value) before it is assigned into the const variable. ------ Rejig top level color management interface slightly. Same code, just change the encapsulation. ------ Remove pre-multiplied alpha prior to color management The pixmaps in mupdf use a premultiplied alpha format. Prior to doing any color management we need to undo the alpha and then reapply after color management. ------ Remove global output intent as unused. ------ Move fz_color_params to be the final arg in dev calls. Frequently this will be NULL, and it doesn't form part of the colorspace/color/alpha triple. ------ Rename fz_default_xxx static variables. Remove fz prefix, to prepare for a later renaming that would conflict. ------ Rename cs_params to color_params. ------ Rename lcms branch identifiers. ------ Return device colorspaces if the default colorspace is NULL. ------ Clean up device call function for set_default_colorspaces. ------ Add missing rethrow. ------ Load page default colorspaces lazily. ------ murun: Add color params device argument. Stubbed to always be NULL at the moment. ------ Rename extgstate processor ops. ------ Fix a few minor issues from Tor Removes icc-imp.h Rename color-icccreate.c Add context to some methods ------ Fix javalib with recent lcms dev changes. ------ Update lcms2 with sub project fixes. ------ Fix build failure. ------ Add icc profile into other PNG output methods ------ Fix some ints that should be size_t's. ------ Tweak fz_new_icc_data_from_icc_colorspace. Ensure that the colorspace is const, and that we set size to 0 if we don't find any data. ------ Combine band writer methods for header and ICC writing For many formats (like PSD), we need to delay writing some of the header until we know whether we are getting an ICC profile to write or not. Makes more sense to just write them at the same time. ------ Miscellaneous tweaks in colorspace.c Mainly to avoid pointer aliasing, "nicer" whitespace, and a leak on error. ------ Avoid rightward drift in get_base_icc. ------ Ensure that pdf_load_output_intent copes with exceptions. If load_icc_based throws and exception, warn and continue. Don't not render a file just because the inbuilt default profiles are broken. ------ Revert change in pdf-page.c The page resources load had been moved so we could get the default colorspaces, but this has been moved into run_contents, so putting stuff back as it was before. ------ Revert changes in mudraw. We had added some colorspages in mudraw, and then later removed them. Revert the changes to accomodate this to make the overall branch diffs smaller. ------ Use fz_buffer in color-icc-create.c ------ Force mapping through proof icc profile always. ------ Fix behaviour on fz_cmm_new_profile failure. If the profile fails to be made, return an error code, and have the callers take sane steps. ------ Tweak load_icc_based Cope better with errors in reading the ICC space not stopping us loading the alternate. ------ Remove unused variable. ------ Get page resource for DefaultCS look-up res = pdf_dict_get(ctx, PDF_NAME_Resources, page->obj); was not returning resource. Replaced with res = pdf_page_resources(ctx, page); ------ Move default color space set up to pdf_run_page_contents_with_usage ------ Review fixes for lcms branch. ------ Fixes for calibrated colorspace loading. ------ Add fz_document_output_intent wrapper. Lazy load intent for PDF. ------ Copy DefaultCS logic into pdf_run_annot_with_usage. Same code as from pdf_run_page_contents_with_usage. ------ More review fixes. ------ Avoid rightward drift in pdf_load_cal_common ------ Rename color_converter functions to be find/drop. Better than than lookup/discard. lookup suggests something that doesn't need dropping, and we use drop rather than discard by convention. ------ Move cmm from context into colorspace context. ------ Review fixes: Remove recursion and rename functions. ------ Don't access doc->oi directly in pdf_load_default_colorspaces. ------ Rename fz_colorspace_is_pdf_cal to fz_colorspace_is_cal and make it public. ------ Tweak function naming to be more consistent. ------ fz_md5_icc can be implemented using fz_md5_buffer. ------ Print full md5 checksums in link key debug prints. ------ Make fz_md5_buffer NULL safe. ------ Simplify debug saving of ICC profiles. ------ Rename fz_cmm_new/drop_profile to init/fin. ------ Indentation cleanups. ------ Move CMM static inline functions from private header to C file. ------ Tweak fz_icc_data_from_icc_colorspace to return a buffer. Also, remove the _new_ from the name to reflect the fact that we are passed a borrowed handle, not given a new reference. ------ java: Add ColorParams.pack() function. ------ Generate one C file for the embedded ICC profiles. ------ Return const pointer from fz_default_color_params. ------ Change misleading argument names to fz_new_colorspace. ------ Rename fz_cmm_new/drop_link to fz_cmm_init/fin_link. ------ Change definition of fz_cmm_instance. Rather than void, use an undefined struct in keeping with the rest of the code. ------ Add support for color managed bgr color space ------ Return unsigned char array from fz_lookup_icc. ------ Make default_color_params immutable. Changing the defaults used by the draw device should happen via a device call, should we need the functionality in the future. ------ Clean up error handling in color-lcms.c ------ Fix signed/unsigned warning.
2017-06-08	Plug leak of PDF page object.	Sebastian Rasmussen

2017-04-27	Typedef function pointers consistently.	Tor Andersson

2017-04-27	Include required system headers.	Tor Andersson

2017-04-11	Bug 697662: Support named actions to first/last/next/previous page.	Sebastian Rasmussen

2017-03-23	Introduce fz_new_derived_...	Robin Watts
	Instead of having fz_new_XXXX(ctx, type, ...) macros that call fz_new_XXXX_of_size etc, use fz_new_derived_... Clearer naming, and doesn't clash with fz_new_document_writer.
2017-03-22	Update fz_new_page.	Robin Watts
	Move this into the same style as fz_new_document and fz_new_image.
2017-03-01	Add page lookup cache for faster link destination lookups in outlines.	Tor Andersson
	Loading outlines wants to look up all link destinations, and doing the normal link destination lookups triggers loading all page objects used. This means we need to parse a lot of objects, which can be quite slow. We can load the page tree faster by only looking at intermediate page tree nodes. If we load the page tree and create a reverse lookup table for use when loading the outline, we can speed up the time to run 'mutool show pdfref17.pdf outline' from 900ms to 100ms.
2017-01-17	Fix typos.	Sebastian Rasmussen

2017-01-09	Remove some dead code.	Tor Andersson

2016-12-23	Cope with NULL resource and concents arguments to pdf_add_page.	Tor Andersson

2016-11-16	pdf: Add x and y output parameters to pdf_lookup_anchor.	Tor Andersson

2016-11-16	pdf: Use '#page=N' for remote destination pages.	Tor Andersson
	As per Adobe's recommendation: https://helpx.adobe.com/acrobat/kb/link-html-pdf-page-acrobat.html
2016-11-16	pdf: Add 'compressed/raw' flag to pdf_add_stream.	Tor Andersson
	Also expose the argument to JS and JNI.
2016-11-14	Fix return in void function.	Tor Andersson

2016-11-14	Add/fix page coordinates to link targets.	Tor Andersson
	Correctly transformed target coordinates for PDF. Target coordinates for EPUB and HTML.
2016-11-14	Add optional 'object' argument to pdf_add_stream.	Tor Andersson

2016-11-02	Fix 697284: The origin was incorrectly calculated for rotated pages.	Tor Andersson

2016-10-28	Clean up link destination handling.	Tor Andersson
	All link destinations should be URIs, and a document specific function can be called to resolve them to actual page numbers. Outlines have cached page numbers as well as string URIs.
2016-10-18	Internal drop functions don't need to check for NULL.	Sebastian Rasmussen

2016-10-18	Avoid checking argument to fz_drop_*()/fz_free().	Sebastian Rasmussen
	As fz_drop_*()/fz_free() all must handle NULL.
2016-10-07	Remove separate tmp/deleted/changed annotation lists.	Tor Andersson
	Use a flag in the pdf_annot struct instead. Don't pass pdf_document to annotation edit functions.
2016-07-08	Separate close and drop functionality for devices and writers.	Tor Andersson
	Closing a device or writer may throw exceptions, but much of the foreign language bindings (JNI and JS) depend on drop to never throw an exception (exceptions in finalizers are bad).
2016-07-08	Slim pdf_xobject struct: remove cached resources field.	Tor Andersson
	The "contents" field is the same as the "obj" field, so can also be removed.
2016-07-08	Slim pdf_annot struct: remove cached page_ctm field.	Tor Andersson

2016-07-06	Start slimming pdf_page.	Tor Andersson
	We want to turn pdf_page into a thin wrapper around a pdf_obj, so that any updates to the underlying PDF objects will be reflected without having to reload the pdf_page.
2016-07-06	Fix garbage collection and page grafting for indirect reference chains.	Tor Andersson
	The mark & sweep pass of garbage collection, and resolving indirect objects when grafting objects was following the full chain of indirect references. In the unusual case where a numbered object is itself only an indirect reference to another object, this intermediate numbered object would be missed both when marking for garbage collection, and when copying objects for grafting. Add a function to resolve only one step for these two uses. The following is an example of a file that would break during garbage collection if we follow full indirect reference chains: %PDF-1.3 1 0 obj <</Type/Catalog /Foo[2 0 R 3 0 R]>> endobj 2 0 obj 4 0 R endobj 3 0 obj 5 0 R endobj 4 0 obj <</Length 1>> stream A endstream endobj 5 0 obj <</Length 1>> stream B endstream endobj
2016-07-06	pdf: Flatten inheritable page properties when copying pages.	Tor Andersson
	Affects pdfclean, pdfmerge, and pdfposter.
2016-05-06	Fix pdf_delete_page_range.	Robin Watts
	And improve the header file commenting.
2016-04-27	Fix 696649: remove fz_rethrow_message calls.	Tor Andersson

2016-04-26	Change order of arguments to pdf_add_page etc.	Tor Andersson
	Resources are defined before they are used; so it's only logical to have the resource dictionary before the content buffer in the argument list.
2016-04-12	Fix some warnings.	Robin Watts
	Remove some bonkers conditions arising (presumably) as a result of search and replace.
2016-03-02	js: Fix reference counting errors.	Tor Andersson

2016-03-01	Don't use pdf_page struct when creating pages.	Tor Andersson

2016-03-01	Rename pdf_new_ref to pdf_add_object.	Tor Andersson

2016-02-29	Pass mediabox to pdf_create_page by const pointer, and pass resources.	Tor Andersson

2016-02-29	Change order of arguments to pdf_create_page.	Tor Andersson

2016-02-29	Add mutool create tool, and PDF font and image resource creation.	Michael Vrhel
	Initial framework for creating pdfs This adds a create option to mutool for us to use in working on the API for creating content as well as adding content to existing documents. mutool create: Get page sizes and add them Start the parsing of the contents.txt file which may have multiple page information. Add the pages at the proper sizes. Further work on mutool create_pdf Remove the calls that were being made to the pdf-write device. Clean up several issues with the reading of the page contents. Get the content streams for each page associated with the page->contents Temp. created a pdf_create_page_contents procedure. I will merge this with pdf_create_page as there is significant overlap. Next is to add in the font and image resources and indirect references. Include pdfcreate in build Merge pdf_create_page_contents and pdf_create_page Add support for images in pdfcreate This adds images to the pdf document using a function stolen from pdf-device (send_image). This was renamed pdf_add_image_res and added to pdf-image. Down the road, send-image will be removed. Prior to that, I need to work on making sure that multiple copies of the same image do not end up in the document. Code was also added to create the page resources to point to the proper image in the document. Next fonts will be added in a similar manner, then I will work on computing the md5 sums of image and fonts to ensure only one copy ends up in the document. Then pdf-write will be reworked to use the same code as opposed to its current list of md5 sums that are stored in a device structure. mutool pdfcreate: support for WinAnsiEncoded fonts Added support for very simple fonts (WinAnsiEncoding). Methods added in pdf-font.c. Added first_width and last_width to fz_font_s and stem_v to pdf_font_desc_s. Ran code through memento with simple test of 4 page document creation including an image and a font. Fixed several leaks as well as buffer corruption issues (main changes in pdfcreate). Thanks to Robin for the help with Memento in finding leaks. Added StemV to pdf names as it was needed for the font descriptor creation. Fix for pdf_write_document rename to pdf_save_document Add resource_ids to pdf document structure The purpose of this structure will be to allow the search and reuse of resources when we attempt to add new ones to the document. Fix name changes from recent updates pdf_create branch updated to work with recent changes in master Initial use of hash table for resources To avoid adding in the same resource this adds a resource_tables member to pdf_document. The resource_tables structure consists of multiple fz_hash_table entries, one for each resource type. When an attempt is made to search for an existing resource, the table will be initialized in a brute force search for existing resources. Currently this is only set up for the image resources and accessed through pdf_add_image_res. If a match is found, the reference object is returned. If no match is found NULL is returned and the ref object created in pdf_add_image_res is added into the hash table. In this case, a command line such as create -o output.pdf -f F0:font.ttf -i Im0:image.jpg -i Im1:image1.jpg \\ -i Im2:image.jpg contents.txt will avoid the insertion of two copies of image.jpg into the output PDF document. CID Identity-H Font added for handing ttf This adds a method for adding a ttf to a PDF as a CID font with Identity-H mapping and a ToUnicode entry that is created using FT_Get_Char_Index This takes much care in the creation of the ToUnicode CMap to ensure that the minimum number of entries are created in that we try to use beginbfrange as much as possible before using beginbfchar. The code makes sure to limit the number of entries in a group to 100 and to not cross first-byte boundaries for the CID values as described in the Adobe Technical note 5411. Add missing file pdf-resources.c pdf-resources.c was missing and should have been committed earlier. Added to windows project file. Not sure where else it needs to be added for the other platforms. Clean up names and spacing Make sure that the visible functions have the proper namespace (e.g. pdf_xxxx) Also make sure we have a blank line prior to comment. Be consistent with static function naming in pdf_resources.c pdfwrite make use of image resource fz_hash_table The pdfwrite device now shares the structure that stores the resource images for pdfcreate. With this fix, pdfwrite now avoids duplicating the writing of the same images that are shared across multiple pages. Add missing file pdf-resources.c Initial work toward having pdfwrite use Identity-H Type0 encoding for fonts Finish of CID type0 Identity-H font for pdfwrite This adds in the proper widths which may have been stored in the source font in the width table (parsed from the W entry in the pdf file) or if the free type structure has its own cmap then we can get the width from free type. Widths are restructured into format described in 5.6.3 of PDF spec. Fix issue from conflict merging and multiple define of structure Clean up warnings and make mutool create use simple font
2016-01-08	pdf: Add function to look up the page for a named destination.	Tor Andersson

2016-01-05	Separate pdf_drop_annots (that drops lists) and fz_drop_annot.	Tor Andersson

2016-01-05	Remove fz_page argument from fz_annot function calls.	Tor Andersson

2015-04-03	Pages created with pdf_create_page were duff.	Robin Watts
	They hadn't been updated with recent changes. Extract the pdf page creation code from pdf_load_page into a new static function, pdf_new_page, and use that from both places.
2015-04-03	Bug 694713: Avoid assert when using pdf_page_write	Robin Watts
	When writing a pdf page, we pass page->contents to pdf_new_pdf_device. This object is assumed to be a dictionary (stream) that can be updated with the Length and stream contents once the page writing process has completed. When we are rewriting a pdf page however, this can go wrong; page->contents can be an array of objects. Not only this, in general it would be possible for several pages to share the same page contents (or maybe some of the elements of a page contents array). Updating one page should not update the others. We therefore update pdf_page_write to always create a new page->contents object and use that. Thanks to Michael Cadilhac for spotting the basic problem here.
2015-03-24	Rework handling of PDF names for speed and memory.	Robin Watts
	Currently, every PDF name is allocated in a pdf_obj structure, and comparisons are done using strcmp. Given that we can predict most of the PDF names we'll use in a given file, this seems wasteful. The pdf_obj type is opaque outside the pdf-object.c file, so we can abuse it slightly without anyone outside knowing. We collect a sorted list of names used in PDF (resources/pdf/names.txt), and we add a utility (namedump) that preprocesses this into 2 header files. The first (include/mupdf/pdf/pdf-names-table.h, included as part of include/mupdf/pdf/object.h), defines a set of "PDF_NAME_xxxx" entries. These are pdf_obj 's that callers can use to mean "A PDF object that means literal name 'xxxx'" The second (source/pdf/pdf-name-impl.h) is a C array of names. We therefore update the code so that rather than passing "xxxx" to functions (such as pdf_dict_gets(...)) we now pass PDF_NAME_xxxx (to pdf_dict_get(...)). This is a fairly natural (if widespread) change. The pdf_dict_getp (and sibling) functions that take a path (e.g. "foo/bar/baz") are therefore supplemented with equivalents that take a list (pdf_dict_getl(... , PDF_NAME_foo, PDF_NAME_bar, PDF_NAME_baz, NULL)). The actual implementation of this relies on the fact that small pointer values are never valid values. For a given pdf_obj p, if NULL < (intptr_t)p < PDF_NAME__LIMIT then p is a literal entry in the name table. This enables us to do fast pointer compares and to skip expensive strcmps. Also, bring "null", "true" and "false" into the same style as PDF names. Rather than using full pdf_obj structures for null/true/false, use special pointer values just above the PDF_NAME_ table. This saves memory and makes comparisons easier.
2015-02-17	Fix memory leak in fz_page.	Tor Andersson

2015-02-17	Add ctx parameter and remove embedded contexts for API regularity.	Tor Andersson
	Purge several embedded contexts: Remove embedded context in fz_output. Remove embedded context in fz_stream. Remove embedded context in fz_device. Remove fz_rebind_stream (since it is no longer necessary). Remove embedded context in svg_device. Remove embedded context in XML parser. Add ctx argument to fz_document functions. Remove embedded context in fz_document. Remove embedded context in pdf_document. Remove embedded context in pdf_obj. Make fz_page independent of fz_document in the interface. We shouldn't need to pass the document to all functions handling a page. If a page is tied to the source document, it's redundant; otherwise it's just pointless. Fix reference counting oddity in fz_new_image_from_pixmap.
2015-02-17	Rename fz_close_* and fz_free_* to fz_drop_*.	Tor Andersson
	Rename fz_close to fz_drop_stream. Rename fz_close_archive to fz_drop_archive. Rename fz_close_output to fz_drop_output. Rename fz_free_* to fz_drop_. Rename pdf_free_ to pdf_drop_. Rename xps_free_ to xps_drop_*.
2014-10-28	more liberally accept page trees with unexpected content	Simon Bünzli
	pdf_lookup_page_loc_imp currently throws if any object in the page tree is neither a /Pages node nor a /Page leaf. This unnecessarily rejects slightly broken documents such as the ones from https://code.google.com/p/sumatrapdf/issues/detail?id=2582 and https://code.google.com/p/sumatrapdf/issues/detail?id=2608 . pdf_count_pages_before_kid currently wrongly throws if a /Pages node doesn't contain any kids and correctly states so (which even seems to be permitted by the PDF specification).
2014-07-18	report more cases of blending use for pdf_page	Simon Bünzli
	pdf_page::transparency is supposed to indicate whether a page uses PDF transparency features. The checks aren't complete, though, which is relevant for devices which require additional handling for transparency (such as SumatraPDF's gdiplus_device). See https://code.google.com/p/sumatrapdf/issues/detail?id=2107 and https://code.google.com/p/sumatrapdf/issues/detail?id=2540 for example documents.