diff options
Diffstat (limited to '3rdparty/libjpeg/jpeglib.h')
-rw-r--r-- | 3rdparty/libjpeg/jpeglib.h | 58 |
1 files changed, 39 insertions, 19 deletions
diff --git a/3rdparty/libjpeg/jpeglib.h b/3rdparty/libjpeg/jpeglib.h index 1eb1fac033f..939b50be58d 100644 --- a/3rdparty/libjpeg/jpeglib.h +++ b/3rdparty/libjpeg/jpeglib.h @@ -2,7 +2,7 @@ * jpeglib.h * * Copyright (C) 1991-1998, Thomas G. Lane. - * Modified 2002-2010 by Guido Vollbeding. + * Modified 2002-2015 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * @@ -34,20 +34,20 @@ extern "C" { #endif /* Version IDs for the JPEG library. - * Might be useful for tests like "#if JPEG_LIB_VERSION >= 80". + * Might be useful for tests like "#if JPEG_LIB_VERSION >= 90". */ -#define JPEG_LIB_VERSION 80 /* Compatibility version 8.0 */ -#define JPEG_LIB_VERSION_MAJOR 8 -#define JPEG_LIB_VERSION_MINOR 3 +#define JPEG_LIB_VERSION 90 /* Compatibility version 9.0 */ +#define JPEG_LIB_VERSION_MAJOR 9 +#define JPEG_LIB_VERSION_MINOR 2 /* Various constants determining the sizes of things. - * All of these are specified by the JPEG standard, so don't change them - * if you want to be compatible. + * All of these are specified by the JPEG standard, + * so don't change them if you want to be compatible. */ -#define DCTSIZE 8 /* The basic DCT block is 8x8 samples */ +#define DCTSIZE 8 /* The basic DCT block is 8x8 coefficients */ #define DCTSIZE2 64 /* DCTSIZE squared; # of elements in a block */ #define NUM_QUANT_TBLS 4 /* Quantization tables are numbered 0..3 */ #define NUM_HUFF_TBLS 4 /* Huffman tables are numbered 0..3 */ @@ -157,16 +157,21 @@ typedef struct { /* The downsampled dimensions are the component's actual, unpadded number * of samples at the main buffer (preprocessing/compression interface); * DCT scaling is included, so - * downsampled_width = ceil(image_width * Hi/Hmax * DCT_h_scaled_size/DCTSIZE) + * downsampled_width = + * ceil(image_width * Hi/Hmax * DCT_h_scaled_size/block_size) * and similarly for height. */ JDIMENSION downsampled_width; /* actual width in samples */ JDIMENSION downsampled_height; /* actual height in samples */ - /* This flag is used only for decompression. In cases where some of the - * components will be ignored (eg grayscale output from YCbCr image), - * we can skip most computations for the unused components. + /* For decompression, in cases where some of the components will be + * ignored (eg grayscale output from YCbCr image), we can skip most + * computations for the unused components. + * For compression, some of the components will need further quantization + * scale by factor of 2 after DCT (eg BG_YCC output from normal RGB input). + * The field is first set TRUE for decompression, FALSE for compression + * in initial_setup, and then adapted in color conversion setup. */ - boolean component_needed; /* do we need the value of this component? */ + boolean component_needed; /* These values are computed before starting a scan of the component. */ /* The decompressor output side may not use these variables. */ @@ -215,12 +220,21 @@ struct jpeg_marker_struct { typedef enum { JCS_UNKNOWN, /* error/unspecified */ JCS_GRAYSCALE, /* monochrome */ - JCS_RGB, /* red/green/blue */ - JCS_YCbCr, /* Y/Cb/Cr (also known as YUV) */ + JCS_RGB, /* red/green/blue, standard RGB (sRGB) */ + JCS_YCbCr, /* Y/Cb/Cr (also known as YUV), standard YCC */ JCS_CMYK, /* C/M/Y/K */ - JCS_YCCK /* Y/Cb/Cr/K */ + JCS_YCCK, /* Y/Cb/Cr/K */ + JCS_BG_RGB, /* big gamut red/green/blue, bg-sRGB */ + JCS_BG_YCC /* big gamut Y/Cb/Cr, bg-sYCC */ } J_COLOR_SPACE; +/* Supported color transforms. */ + +typedef enum { + JCT_NONE = 0, + JCT_SUBTRACT_GREEN = 1 +} J_COLOR_TRANSFORM; + /* DCT/IDCT algorithm options. */ typedef enum { @@ -369,7 +383,10 @@ struct jpeg_compress_struct { UINT16 X_density; /* Horizontal pixel density */ UINT16 Y_density; /* Vertical pixel density */ boolean write_Adobe_marker; /* should an Adobe marker be written? */ - + + J_COLOR_TRANSFORM color_transform; + /* Color transform identifier, writes LSE marker if nonzero */ + /* State variable: index of next scanline to be written to * jpeg_write_scanlines(). Application may use this to control its * processing loop, e.g., "while (next_scanline < image_height)". @@ -589,6 +606,9 @@ struct jpeg_decompress_struct { boolean saw_Adobe_marker; /* TRUE iff an Adobe APP14 marker was found */ UINT8 Adobe_transform; /* Color transform code from Adobe marker */ + J_COLOR_TRANSFORM color_transform; + /* Color transform identifier derived from LSE marker, otherwise zero */ + boolean CCIR601_sampling; /* TRUE=first samples are cosited */ /* Aside from the specific data retained from APPn markers known to the @@ -681,7 +701,7 @@ struct jpeg_decompress_struct { struct jpeg_error_mgr { /* Error exit handler: does not return to caller */ - JMETHOD(void, error_exit, (j_common_ptr cinfo)); + JMETHOD(noreturn_t, error_exit, (j_common_ptr cinfo)); /* Conditionally emit a trace or warning message */ JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level)); /* Routine that actually outputs a trace or error message */ @@ -959,7 +979,7 @@ EXTERN(void) jpeg_mem_dest JPP((j_compress_ptr cinfo, unsigned char ** outbuffer, unsigned long * outsize)); EXTERN(void) jpeg_mem_src JPP((j_decompress_ptr cinfo, - unsigned char * inbuffer, + const unsigned char * inbuffer, unsigned long insize)); /* Default parameter setup for compression */ |