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35e69fc7cf
* New feature: "Large Window Brotli" By setting special encoder/decoder flag it is now possible to extend LZ-window up to 30 bits; though produced stream will not be RFC7932 compliant. Added new dictionary generator - "DSH". It combines speed of "Sieve" and quality of "DM". Plus utilities to prepare train corpora (remove unique strings). Improved compression ratio: now two sub-blocks could be stitched: the last copy command could be extended to span the next sub-block. Fixed compression ineffectiveness caused by floating numbers rounding and wrong cost heuristic. Other C changes: - combined / moved `context.h` to `common` - moved transforms to `common` - unified some aspects of code formatting - added an abstraction for encoder (static) dictionary - moved default allocator/deallocator functions to `common` brotli CLI: - window size is auto-adjusted if not specified explicitly Java: - added "eager" decoding both to JNI wrapper and pure decoder - huge speed-up of `DictionaryData` initialization * Add dictionaryless compressed dictionary * Fix `sources.lst` * Fix `sources.lst` and add a note that `libtool` is also required. * Update setup.py * Fix `EagerStreamTest` * Fix BUILD file * Add missing `libdivsufsort` dependency * Fix "unused parameter" warning.
118 lines
3.0 KiB
Groff
118 lines
3.0 KiB
Groff
.TH "types.h" 3 "Thu Feb 22 2018" "Brotli" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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types.h \- Common types used in decoder and encoder API\&.
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.SH SYNOPSIS
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.br
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.PP
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.SS "Macros"
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.in +1c
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.ti -1c
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.RI "#define \fBBROTLI_BOOL\fP int"
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.br
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.RI "\fIA portable \fCbool\fP replacement\&. \fP"
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.ti -1c
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.RI "#define \fBBROTLI_FALSE\fP 0"
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.br
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.RI "\fIPortable \fCfalse\fP replacement\&. \fP"
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.ti -1c
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.RI "#define \fBBROTLI_TRUE\fP 1"
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.br
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.RI "\fIPortable \fCtrue\fP replacement\&. \fP"
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.ti -1c
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.RI "#define \fBTO_BROTLI_BOOL\fP(X) (!!(X) ? \fBBROTLI_TRUE\fP : \fBBROTLI_FALSE\fP)"
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.br
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.RI "\fI\fCbool\fP to \fBBROTLI_BOOL\fP conversion macros\&. \fP"
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.in -1c
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.SS "Typedefs"
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.in +1c
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.ti -1c
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.RI "typedef void *(* \fBbrotli_alloc_func\fP) (void *opaque, size_t size)"
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.br
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.RI "\fIAllocating function pointer type\&. \fP"
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.ti -1c
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.RI "typedef void(* \fBbrotli_free_func\fP) (void *opaque, void *address)"
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.br
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.RI "\fIDeallocating function pointer type\&. \fP"
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.in -1c
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.SH "Detailed Description"
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.PP
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Common types used in decoder and encoder API\&.
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.SH "Macro Definition Documentation"
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.PP
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.SS "#define BROTLI_BOOL int"
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.PP
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A portable \fCbool\fP replacement\&. \fBBROTLI_BOOL\fP is a 'documentation' type: actually it is \fCint\fP, but in API it denotes a type, whose only values are \fBBROTLI_TRUE\fP and \fBBROTLI_FALSE\fP\&.
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.PP
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\fBBROTLI_BOOL\fP values passed to Brotli should either be \fBBROTLI_TRUE\fP or \fBBROTLI_FALSE\fP, or be a result of \fBTO_BROTLI_BOOL\fP macros\&.
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.PP
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\fBBROTLI_BOOL\fP values returned by Brotli should not be tested for equality with \fCtrue\fP, \fCfalse\fP, \fBBROTLI_TRUE\fP, \fBBROTLI_FALSE\fP, but rather should be evaluated, for example:
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.PP
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.nf
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if (SomeBrotliFunction(encoder, BROTLI_TRUE) &&
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!OtherBrotliFunction(decoder, BROTLI_FALSE)) {
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bool x = !!YetAnotherBrotliFunction(encoder, TO_BROLTI_BOOL(2 * 2 == 4));
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DoSomething(x);
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}
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.fi
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.PP
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.SS "#define BROTLI_FALSE 0"
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.PP
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Portable \fCfalse\fP replacement\&.
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.SS "#define BROTLI_TRUE 1"
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.PP
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Portable \fCtrue\fP replacement\&.
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.SS "#define TO_BROTLI_BOOL(X) (!!(X) ? \fBBROTLI_TRUE\fP : \fBBROTLI_FALSE\fP)"
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.PP
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\fCbool\fP to \fBBROTLI_BOOL\fP conversion macros\&.
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.SH "Typedef Documentation"
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.PP
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.SS "typedef void*(* brotli_alloc_func) (void *opaque, size_t size)"
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.PP
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Allocating function pointer type\&.
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.PP
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\fBParameters:\fP
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.RS 4
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\fIopaque\fP custom memory manager handle provided by client
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.br
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\fIsize\fP requested memory region size; can not be \fC0\fP
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.RE
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.PP
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\fBReturns:\fP
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.RS 4
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\fC0\fP in the case of failure
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.PP
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a valid pointer to a memory region of at least \fCsize\fP bytes long otherwise
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.RE
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.PP
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.SS "typedef void(* brotli_free_func) (void *opaque, void *address)"
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.PP
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Deallocating function pointer type\&. This function \fBSHOULD\fP do nothing if \fCaddress\fP is \fC0\fP\&.
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.PP
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\fBParameters:\fP
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.RS 4
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\fIopaque\fP custom memory manager handle provided by client
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.br
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\fIaddress\fP memory region pointer returned by \fBbrotli_alloc_func\fP, or \fC0\fP
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.RE
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.PP
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Brotli from the source code\&.
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