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4991ef2f9d
Also includes the fix for upstream issue #288 to avoid crashes on some older Win7 systems. Differential Revision: https://phabricator.services.mozilla.com/D7758 --HG-- rename : media/libjpeg/simd/jsimd_arm.c => media/libjpeg/simd/arm/jsimd.c rename : media/libjpeg/simd/jsimd_arm_neon.S => media/libjpeg/simd/arm/jsimd_neon.S rename : media/libjpeg/simd/jsimd_arm64.c => media/libjpeg/simd/arm64/jsimd.c rename : media/libjpeg/simd/jsimd_arm64_neon.S => media/libjpeg/simd/arm64/jsimd_neon.S rename : media/libjpeg/simd/jccolext-mmx.asm => media/libjpeg/simd/i386/jccolext-mmx.asm rename : media/libjpeg/simd/jccolext-sse2.asm => media/libjpeg/simd/i386/jccolext-sse2.asm rename : media/libjpeg/simd/jccolor-mmx.asm => media/libjpeg/simd/i386/jccolor-mmx.asm rename : media/libjpeg/simd/jccolor-sse2.asm => media/libjpeg/simd/i386/jccolor-sse2.asm rename : media/libjpeg/simd/jcgray-mmx.asm => media/libjpeg/simd/i386/jcgray-mmx.asm rename : media/libjpeg/simd/jcgray-sse2.asm => media/libjpeg/simd/i386/jcgray-sse2.asm rename : media/libjpeg/simd/jcgryext-mmx.asm => media/libjpeg/simd/i386/jcgryext-mmx.asm rename : media/libjpeg/simd/jcgryext-sse2.asm => media/libjpeg/simd/i386/jcgryext-sse2.asm rename : media/libjpeg/simd/jchuff-sse2.asm => media/libjpeg/simd/i386/jchuff-sse2.asm rename : media/libjpeg/simd/jcsample-mmx.asm => media/libjpeg/simd/i386/jcsample-mmx.asm rename : media/libjpeg/simd/jcsample-sse2.asm => media/libjpeg/simd/i386/jcsample-sse2.asm rename : media/libjpeg/simd/jdcolext-mmx.asm => media/libjpeg/simd/i386/jdcolext-mmx.asm rename : media/libjpeg/simd/jdcolext-sse2.asm => media/libjpeg/simd/i386/jdcolext-sse2.asm rename : media/libjpeg/simd/jdcolor-mmx.asm => media/libjpeg/simd/i386/jdcolor-mmx.asm rename : media/libjpeg/simd/jdcolor-sse2.asm => media/libjpeg/simd/i386/jdcolor-sse2.asm rename : media/libjpeg/simd/jdmerge-mmx.asm => media/libjpeg/simd/i386/jdmerge-mmx.asm rename : media/libjpeg/simd/jdmerge-sse2.asm => media/libjpeg/simd/i386/jdmerge-sse2.asm rename : media/libjpeg/simd/jdmrgext-mmx.asm => media/libjpeg/simd/i386/jdmrgext-mmx.asm rename : media/libjpeg/simd/jdmrgext-sse2.asm => media/libjpeg/simd/i386/jdmrgext-sse2.asm rename : media/libjpeg/simd/jdsample-mmx.asm => media/libjpeg/simd/i386/jdsample-mmx.asm rename : media/libjpeg/simd/jdsample-sse2.asm => media/libjpeg/simd/i386/jdsample-sse2.asm rename : media/libjpeg/simd/jfdctflt-3dn.asm => media/libjpeg/simd/i386/jfdctflt-3dn.asm rename : media/libjpeg/simd/jfdctflt-sse.asm => media/libjpeg/simd/i386/jfdctflt-sse.asm rename : media/libjpeg/simd/jfdctfst-mmx.asm => media/libjpeg/simd/i386/jfdctfst-mmx.asm rename : media/libjpeg/simd/jfdctfst-sse2.asm => media/libjpeg/simd/i386/jfdctfst-sse2.asm rename : media/libjpeg/simd/jfdctint-mmx.asm => media/libjpeg/simd/i386/jfdctint-mmx.asm rename : media/libjpeg/simd/jfdctint-sse2.asm => media/libjpeg/simd/i386/jfdctint-sse2.asm rename : media/libjpeg/simd/jidctflt-3dn.asm => media/libjpeg/simd/i386/jidctflt-3dn.asm rename : media/libjpeg/simd/jidctflt-sse.asm => media/libjpeg/simd/i386/jidctflt-sse.asm rename : media/libjpeg/simd/jidctflt-sse2.asm => media/libjpeg/simd/i386/jidctflt-sse2.asm rename : media/libjpeg/simd/jidctfst-mmx.asm => media/libjpeg/simd/i386/jidctfst-mmx.asm rename : media/libjpeg/simd/jidctfst-sse2.asm => media/libjpeg/simd/i386/jidctfst-sse2.asm rename : media/libjpeg/simd/jidctint-mmx.asm => media/libjpeg/simd/i386/jidctint-mmx.asm rename : media/libjpeg/simd/jidctint-sse2.asm => media/libjpeg/simd/i386/jidctint-sse2.asm rename : media/libjpeg/simd/jidctred-mmx.asm => media/libjpeg/simd/i386/jidctred-mmx.asm rename : media/libjpeg/simd/jidctred-sse2.asm => media/libjpeg/simd/i386/jidctred-sse2.asm rename : media/libjpeg/simd/jquant-3dn.asm => media/libjpeg/simd/i386/jquant-3dn.asm rename : media/libjpeg/simd/jquant-mmx.asm => media/libjpeg/simd/i386/jquant-mmx.asm rename : media/libjpeg/simd/jquant-sse.asm => media/libjpeg/simd/i386/jquant-sse.asm rename : media/libjpeg/simd/jquantf-sse2.asm => media/libjpeg/simd/i386/jquantf-sse2.asm rename : media/libjpeg/simd/jquanti-sse2.asm => media/libjpeg/simd/i386/jquanti-sse2.asm rename : media/libjpeg/simd/jsimd_i386.c => media/libjpeg/simd/i386/jsimd.c rename : media/libjpeg/simd/jsimdcpu.asm => media/libjpeg/simd/i386/jsimdcpu.asm rename : media/libjpeg/simd/jsimd_mips.c => media/libjpeg/simd/mips/jsimd.c rename : media/libjpeg/simd/jsimd_mips_dspr2.S => media/libjpeg/simd/mips/jsimd_dspr2.S rename : media/libjpeg/simd/jsimd_mips_dspr2_asm.h => media/libjpeg/simd/mips/jsimd_dspr2_asm.h rename : media/libjpeg/simd/jcolsamp.inc => media/libjpeg/simd/nasm/jcolsamp.inc rename : media/libjpeg/simd/jdct.inc => media/libjpeg/simd/nasm/jdct.inc rename : media/libjpeg/simd/jpeg_nbits_table.inc => media/libjpeg/simd/nasm/jpeg_nbits_table.inc rename : media/libjpeg/simd/jsimdcfg.inc => media/libjpeg/simd/nasm/jsimdcfg.inc rename : media/libjpeg/simd/jsimdext.inc => media/libjpeg/simd/nasm/jsimdext.inc rename : media/libjpeg/simd/jccolext-altivec.c => media/libjpeg/simd/powerpc/jccolext-altivec.c rename : media/libjpeg/simd/jccolor-altivec.c => media/libjpeg/simd/powerpc/jccolor-altivec.c rename : media/libjpeg/simd/jcgray-altivec.c => media/libjpeg/simd/powerpc/jcgray-altivec.c rename : media/libjpeg/simd/jcgryext-altivec.c => media/libjpeg/simd/powerpc/jcgryext-altivec.c rename : media/libjpeg/simd/jcsample-altivec.c => media/libjpeg/simd/powerpc/jcsample-altivec.c rename : media/libjpeg/simd/jcsample.h => media/libjpeg/simd/powerpc/jcsample.h rename : media/libjpeg/simd/jdcolext-altivec.c => media/libjpeg/simd/powerpc/jdcolext-altivec.c rename : media/libjpeg/simd/jdcolor-altivec.c => media/libjpeg/simd/powerpc/jdcolor-altivec.c rename : media/libjpeg/simd/jdmerge-altivec.c => media/libjpeg/simd/powerpc/jdmerge-altivec.c rename : media/libjpeg/simd/jdmrgext-altivec.c => media/libjpeg/simd/powerpc/jdmrgext-altivec.c rename : media/libjpeg/simd/jdsample-altivec.c => media/libjpeg/simd/powerpc/jdsample-altivec.c rename : media/libjpeg/simd/jfdctfst-altivec.c => media/libjpeg/simd/powerpc/jfdctfst-altivec.c rename : media/libjpeg/simd/jfdctint-altivec.c => media/libjpeg/simd/powerpc/jfdctint-altivec.c rename : media/libjpeg/simd/jidctfst-altivec.c => media/libjpeg/simd/powerpc/jidctfst-altivec.c rename : media/libjpeg/simd/jidctint-altivec.c => media/libjpeg/simd/powerpc/jidctint-altivec.c rename : media/libjpeg/simd/jquanti-altivec.c => media/libjpeg/simd/powerpc/jquanti-altivec.c rename : media/libjpeg/simd/jsimd_powerpc.c => media/libjpeg/simd/powerpc/jsimd.c rename : media/libjpeg/simd/jsimd_altivec.h => media/libjpeg/simd/powerpc/jsimd_altivec.h rename : media/libjpeg/simd/jccolext-sse2-64.asm => media/libjpeg/simd/x86_64/jccolext-sse2.asm rename : media/libjpeg/simd/jccolor-sse2-64.asm => media/libjpeg/simd/x86_64/jccolor-sse2.asm rename : media/libjpeg/simd/jcgray-sse2-64.asm => media/libjpeg/simd/x86_64/jcgray-sse2.asm rename : media/libjpeg/simd/jcgryext-sse2-64.asm => media/libjpeg/simd/x86_64/jcgryext-sse2.asm rename : media/libjpeg/simd/jchuff-sse2-64.asm => media/libjpeg/simd/x86_64/jchuff-sse2.asm rename : media/libjpeg/simd/jcsample-sse2-64.asm => media/libjpeg/simd/x86_64/jcsample-sse2.asm rename : media/libjpeg/simd/jdcolext-sse2-64.asm => media/libjpeg/simd/x86_64/jdcolext-sse2.asm rename : media/libjpeg/simd/jdcolor-sse2-64.asm => media/libjpeg/simd/x86_64/jdcolor-sse2.asm rename : media/libjpeg/simd/jdmerge-sse2-64.asm => media/libjpeg/simd/x86_64/jdmerge-sse2.asm rename : media/libjpeg/simd/jdmrgext-sse2-64.asm => media/libjpeg/simd/x86_64/jdmrgext-sse2.asm rename : media/libjpeg/simd/jdsample-sse2-64.asm => media/libjpeg/simd/x86_64/jdsample-sse2.asm rename : media/libjpeg/simd/jfdctflt-sse-64.asm => media/libjpeg/simd/x86_64/jfdctflt-sse.asm rename : media/libjpeg/simd/jfdctfst-sse2-64.asm => media/libjpeg/simd/x86_64/jfdctfst-sse2.asm rename : media/libjpeg/simd/jfdctint-sse2-64.asm => media/libjpeg/simd/x86_64/jfdctint-sse2.asm rename : media/libjpeg/simd/jidctflt-sse2-64.asm => media/libjpeg/simd/x86_64/jidctflt-sse2.asm rename : media/libjpeg/simd/jidctfst-sse2-64.asm => media/libjpeg/simd/x86_64/jidctfst-sse2.asm rename : media/libjpeg/simd/jidctint-sse2-64.asm => media/libjpeg/simd/x86_64/jidctint-sse2.asm rename : media/libjpeg/simd/jidctred-sse2-64.asm => media/libjpeg/simd/x86_64/jidctred-sse2.asm rename : media/libjpeg/simd/jquantf-sse2-64.asm => media/libjpeg/simd/x86_64/jquantf-sse2.asm rename : media/libjpeg/simd/jquanti-sse2-64.asm => media/libjpeg/simd/x86_64/jquanti-sse2.asm rename : media/libjpeg/simd/jsimd_x86_64.c => media/libjpeg/simd/x86_64/jsimd.c extra : moz-landing-system : lando
296 lines
10 KiB
C
296 lines
10 KiB
C
/*
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* jdatasrc.c
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*
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* This file was part of the Independent JPEG Group's software:
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* Copyright (C) 1994-1996, Thomas G. Lane.
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* Modified 2009-2011 by Guido Vollbeding.
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* libjpeg-turbo Modifications:
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* Copyright (C) 2013, 2016, D. R. Commander.
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* For conditions of distribution and use, see the accompanying README.ijg
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* file.
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*
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* This file contains decompression data source routines for the case of
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* reading JPEG data from memory or from a file (or any stdio stream).
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* While these routines are sufficient for most applications,
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* some will want to use a different source manager.
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* IMPORTANT: we assume that fread() will correctly transcribe an array of
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* JOCTETs from 8-bit-wide elements on external storage. If char is wider
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* than 8 bits on your machine, you may need to do some tweaking.
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*/
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/* this is not a core library module, so it doesn't define JPEG_INTERNALS */
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#include "jinclude.h"
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#include "jpeglib.h"
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#include "jerror.h"
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/* Expanded data source object for stdio input */
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typedef struct {
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struct jpeg_source_mgr pub; /* public fields */
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FILE *infile; /* source stream */
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JOCTET *buffer; /* start of buffer */
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boolean start_of_file; /* have we gotten any data yet? */
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} my_source_mgr;
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typedef my_source_mgr *my_src_ptr;
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#define INPUT_BUF_SIZE 4096 /* choose an efficiently fread'able size */
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/*
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* Initialize source --- called by jpeg_read_header
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* before any data is actually read.
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*/
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METHODDEF(void)
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init_source(j_decompress_ptr cinfo)
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{
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my_src_ptr src = (my_src_ptr)cinfo->src;
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/* We reset the empty-input-file flag for each image,
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* but we don't clear the input buffer.
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* This is correct behavior for reading a series of images from one source.
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*/
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src->start_of_file = TRUE;
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}
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#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
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METHODDEF(void)
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init_mem_source(j_decompress_ptr cinfo)
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{
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/* no work necessary here */
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}
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#endif
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/*
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* Fill the input buffer --- called whenever buffer is emptied.
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*
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* In typical applications, this should read fresh data into the buffer
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* (ignoring the current state of next_input_byte & bytes_in_buffer),
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* reset the pointer & count to the start of the buffer, and return TRUE
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* indicating that the buffer has been reloaded. It is not necessary to
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* fill the buffer entirely, only to obtain at least one more byte.
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*
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* There is no such thing as an EOF return. If the end of the file has been
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* reached, the routine has a choice of ERREXIT() or inserting fake data into
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* the buffer. In most cases, generating a warning message and inserting a
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* fake EOI marker is the best course of action --- this will allow the
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* decompressor to output however much of the image is there. However,
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* the resulting error message is misleading if the real problem is an empty
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* input file, so we handle that case specially.
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*
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* In applications that need to be able to suspend compression due to input
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* not being available yet, a FALSE return indicates that no more data can be
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* obtained right now, but more may be forthcoming later. In this situation,
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* the decompressor will return to its caller (with an indication of the
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* number of scanlines it has read, if any). The application should resume
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* decompression after it has loaded more data into the input buffer. Note
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* that there are substantial restrictions on the use of suspension --- see
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* the documentation.
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*
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* When suspending, the decompressor will back up to a convenient restart point
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* (typically the start of the current MCU). next_input_byte & bytes_in_buffer
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* indicate where the restart point will be if the current call returns FALSE.
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* Data beyond this point must be rescanned after resumption, so move it to
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* the front of the buffer rather than discarding it.
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*/
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METHODDEF(boolean)
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fill_input_buffer(j_decompress_ptr cinfo)
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{
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my_src_ptr src = (my_src_ptr)cinfo->src;
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size_t nbytes;
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nbytes = JFREAD(src->infile, src->buffer, INPUT_BUF_SIZE);
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if (nbytes <= 0) {
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if (src->start_of_file) /* Treat empty input file as fatal error */
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ERREXIT(cinfo, JERR_INPUT_EMPTY);
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WARNMS(cinfo, JWRN_JPEG_EOF);
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/* Insert a fake EOI marker */
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src->buffer[0] = (JOCTET)0xFF;
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src->buffer[1] = (JOCTET)JPEG_EOI;
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nbytes = 2;
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}
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src->pub.next_input_byte = src->buffer;
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src->pub.bytes_in_buffer = nbytes;
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src->start_of_file = FALSE;
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return TRUE;
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}
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#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
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METHODDEF(boolean)
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fill_mem_input_buffer(j_decompress_ptr cinfo)
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{
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static const JOCTET mybuffer[4] = {
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(JOCTET)0xFF, (JOCTET)JPEG_EOI, 0, 0
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};
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/* The whole JPEG data is expected to reside in the supplied memory
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* buffer, so any request for more data beyond the given buffer size
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* is treated as an error.
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*/
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WARNMS(cinfo, JWRN_JPEG_EOF);
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/* Insert a fake EOI marker */
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cinfo->src->next_input_byte = mybuffer;
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cinfo->src->bytes_in_buffer = 2;
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return TRUE;
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}
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#endif
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/*
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* Skip data --- used to skip over a potentially large amount of
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* uninteresting data (such as an APPn marker).
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*
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* Writers of suspendable-input applications must note that skip_input_data
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* is not granted the right to give a suspension return. If the skip extends
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* beyond the data currently in the buffer, the buffer can be marked empty so
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* that the next read will cause a fill_input_buffer call that can suspend.
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* Arranging for additional bytes to be discarded before reloading the input
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* buffer is the application writer's problem.
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*/
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METHODDEF(void)
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skip_input_data(j_decompress_ptr cinfo, long num_bytes)
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{
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struct jpeg_source_mgr *src = cinfo->src;
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/* Just a dumb implementation for now. Could use fseek() except
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* it doesn't work on pipes. Not clear that being smart is worth
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* any trouble anyway --- large skips are infrequent.
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*/
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if (num_bytes > 0) {
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while (num_bytes > (long)src->bytes_in_buffer) {
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num_bytes -= (long)src->bytes_in_buffer;
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(void)(*src->fill_input_buffer) (cinfo);
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/* note we assume that fill_input_buffer will never return FALSE,
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* so suspension need not be handled.
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*/
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}
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src->next_input_byte += (size_t)num_bytes;
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src->bytes_in_buffer -= (size_t)num_bytes;
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}
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}
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/*
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* An additional method that can be provided by data source modules is the
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* resync_to_restart method for error recovery in the presence of RST markers.
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* For the moment, this source module just uses the default resync method
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* provided by the JPEG library. That method assumes that no backtracking
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* is possible.
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*/
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/*
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* Terminate source --- called by jpeg_finish_decompress
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* after all data has been read. Often a no-op.
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*
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* NB: *not* called by jpeg_abort or jpeg_destroy; surrounding
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* application must deal with any cleanup that should happen even
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* for error exit.
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*/
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METHODDEF(void)
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term_source(j_decompress_ptr cinfo)
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{
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/* no work necessary here */
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}
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/*
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* Prepare for input from a stdio stream.
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* The caller must have already opened the stream, and is responsible
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* for closing it after finishing decompression.
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*/
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GLOBAL(void)
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jpeg_stdio_src(j_decompress_ptr cinfo, FILE *infile)
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{
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my_src_ptr src;
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/* The source object and input buffer are made permanent so that a series
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* of JPEG images can be read from the same file by calling jpeg_stdio_src
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* only before the first one. (If we discarded the buffer at the end of
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* one image, we'd likely lose the start of the next one.)
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*/
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if (cinfo->src == NULL) { /* first time for this JPEG object? */
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cinfo->src = (struct jpeg_source_mgr *)
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(*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_PERMANENT,
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sizeof(my_source_mgr));
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src = (my_src_ptr)cinfo->src;
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src->buffer = (JOCTET *)
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(*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_PERMANENT,
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INPUT_BUF_SIZE * sizeof(JOCTET));
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} else if (cinfo->src->init_source != init_source) {
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/* It is unsafe to reuse the existing source manager unless it was created
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* by this function. Otherwise, there is no guarantee that the opaque
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* structure is the right size. Note that we could just create a new
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* structure, but the old structure would not be freed until
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* jpeg_destroy_decompress() was called.
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*/
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ERREXIT(cinfo, JERR_BUFFER_SIZE);
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}
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src = (my_src_ptr)cinfo->src;
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src->pub.init_source = init_source;
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src->pub.fill_input_buffer = fill_input_buffer;
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src->pub.skip_input_data = skip_input_data;
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src->pub.resync_to_restart = jpeg_resync_to_restart; /* use default method */
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src->pub.term_source = term_source;
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src->infile = infile;
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src->pub.bytes_in_buffer = 0; /* forces fill_input_buffer on first read */
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|
src->pub.next_input_byte = NULL; /* until buffer loaded */
|
|
}
|
|
|
|
|
|
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
|
|
/*
|
|
* Prepare for input from a supplied memory buffer.
|
|
* The buffer must contain the whole JPEG data.
|
|
*/
|
|
|
|
GLOBAL(void)
|
|
jpeg_mem_src(j_decompress_ptr cinfo, const unsigned char *inbuffer,
|
|
unsigned long insize)
|
|
{
|
|
struct jpeg_source_mgr *src;
|
|
|
|
if (inbuffer == NULL || insize == 0) /* Treat empty input as fatal error */
|
|
ERREXIT(cinfo, JERR_INPUT_EMPTY);
|
|
|
|
/* The source object is made permanent so that a series of JPEG images
|
|
* can be read from the same buffer by calling jpeg_mem_src only before
|
|
* the first one.
|
|
*/
|
|
if (cinfo->src == NULL) { /* first time for this JPEG object? */
|
|
cinfo->src = (struct jpeg_source_mgr *)
|
|
(*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_PERMANENT,
|
|
sizeof(struct jpeg_source_mgr));
|
|
} else if (cinfo->src->init_source != init_mem_source) {
|
|
/* It is unsafe to reuse the existing source manager unless it was created
|
|
* by this function.
|
|
*/
|
|
ERREXIT(cinfo, JERR_BUFFER_SIZE);
|
|
}
|
|
|
|
src = cinfo->src;
|
|
src->init_source = init_mem_source;
|
|
src->fill_input_buffer = fill_mem_input_buffer;
|
|
src->skip_input_data = skip_input_data;
|
|
src->resync_to_restart = jpeg_resync_to_restart; /* use default method */
|
|
src->term_source = term_source;
|
|
src->bytes_in_buffer = (size_t)insize;
|
|
src->next_input_byte = (const JOCTET *)inbuffer;
|
|
}
|
|
#endif
|