diff options
Diffstat (limited to 'graphics/jpeg/files/patch-transupp.h')
| -rw-r--r-- | graphics/jpeg/files/patch-transupp.h | 191 |
1 files changed, 188 insertions, 3 deletions
diff --git a/graphics/jpeg/files/patch-transupp.h b/graphics/jpeg/files/patch-transupp.h index f295b2803445..c8e1941f3fc4 100644 --- a/graphics/jpeg/files/patch-transupp.h +++ b/graphics/jpeg/files/patch-transupp.h @@ -1,6 +1,191 @@ ---- transupp.h.exif 1997-07-24 04:39:12.000000000 +0200 -+++ transupp.h 2003-09-25 01:05:12.000000000 +0200 -@@ -121,7 +121,8 @@ +--- transupp.h.orig Wed Jul 23 22:39:12 1997 ++++ transupp.h Fri Jun 4 15:07:31 2004 +@@ -1,7 +1,7 @@ + /* + * transupp.h + * +- * Copyright (C) 1997, Thomas G. Lane. ++ * Copyright (C) 1997-2001, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * +@@ -22,32 +22,6 @@ + #define TRANSFORMS_SUPPORTED 1 /* 0 disables transform code */ + #endif + +-/* Short forms of external names for systems with brain-damaged linkers. */ +- +-#ifdef NEED_SHORT_EXTERNAL_NAMES +-#define jtransform_request_workspace jTrRequest +-#define jtransform_adjust_parameters jTrAdjust +-#define jtransform_execute_transformation jTrExec +-#define jcopy_markers_setup jCMrkSetup +-#define jcopy_markers_execute jCMrkExec +-#endif /* NEED_SHORT_EXTERNAL_NAMES */ +- +- +-/* +- * Codes for supported types of image transformations. +- */ +- +-typedef enum { +- JXFORM_NONE, /* no transformation */ +- JXFORM_FLIP_H, /* horizontal flip */ +- JXFORM_FLIP_V, /* vertical flip */ +- JXFORM_TRANSPOSE, /* transpose across UL-to-LR axis */ +- JXFORM_TRANSVERSE, /* transpose across UR-to-LL axis */ +- JXFORM_ROT_90, /* 90-degree clockwise rotation */ +- JXFORM_ROT_180, /* 180-degree rotation */ +- JXFORM_ROT_270 /* 270-degree clockwise (or 90 ccw) */ +-} JXFORM_CODE; +- + /* + * Although rotating and flipping data expressed as DCT coefficients is not + * hard, there is an asymmetry in the JPEG format specification for images +@@ -75,6 +49,19 @@ + * (For example, -rot 270 -trim trims only the bottom edge, but -rot 90 -trim + * followed by -rot 180 -trim trims both edges.) + * ++ * We also offer a lossless-crop option, which discards data outside a given ++ * image region but losslessly preserves what is inside. Like the rotate and ++ * flip transforms, lossless crop is restricted by the JPEG format: the upper ++ * left corner of the selected region must fall on an iMCU boundary. If this ++ * does not hold for the given crop parameters, we silently move the upper left ++ * corner up and/or left to make it so, simultaneously increasing the region ++ * dimensions to keep the lower right crop corner unchanged. (Thus, the ++ * output image covers at least the requested region, but may cover more.) ++ * ++ * If both crop and a rotate/flip transform are requested, the crop is applied ++ * last --- that is, the crop region is specified in terms of the destination ++ * image. ++ * + * We also offer a "force to grayscale" option, which simply discards the + * chrominance channels of a YCbCr image. This is lossless in the sense that + * the luminance channel is preserved exactly. It's not the same kind of +@@ -83,20 +70,96 @@ + * be aware of the option to know how many components to work on. + */ + ++ ++/* Short forms of external names for systems with brain-damaged linkers. */ ++ ++#ifdef NEED_SHORT_EXTERNAL_NAMES ++#define jtransform_parse_crop_spec jTrParCrop ++#define jtransform_request_workspace jTrRequest ++#define jtransform_adjust_parameters jTrAdjust ++#define jtransform_execute_transform jTrExec ++#define jtransform_perfect_transform jTrPerfect ++#define jcopy_markers_setup jCMrkSetup ++#define jcopy_markers_execute jCMrkExec ++#endif /* NEED_SHORT_EXTERNAL_NAMES */ ++ ++ ++/* ++ * Codes for supported types of image transformations. ++ */ ++ ++typedef enum { ++ JXFORM_NONE, /* no transformation */ ++ JXFORM_FLIP_H, /* horizontal flip */ ++ JXFORM_FLIP_V, /* vertical flip */ ++ JXFORM_TRANSPOSE, /* transpose across UL-to-LR axis */ ++ JXFORM_TRANSVERSE, /* transpose across UR-to-LL axis */ ++ JXFORM_ROT_90, /* 90-degree clockwise rotation */ ++ JXFORM_ROT_180, /* 180-degree rotation */ ++ JXFORM_ROT_270, /* 270-degree clockwise (or 90 ccw) */ ++ JXFORM_DROP /* drop */ ++} JXFORM_CODE; ++ ++/* ++ * Codes for crop parameters, which can individually be unspecified, ++ * positive, or negative. (Negative width or height makes no sense, though.) ++ */ ++ ++typedef enum { ++ JCROP_UNSET, ++ JCROP_POS, ++ JCROP_NEG ++} JCROP_CODE; ++ ++/* ++ * Transform parameters struct. ++ * NB: application must not change any elements of this struct after ++ * calling jtransform_request_workspace. ++ */ ++ + typedef struct { + /* Options: set by caller */ + JXFORM_CODE transform; /* image transform operator */ ++ boolean perfect; /* if TRUE, fail if partial MCUs are requested */ + boolean trim; /* if TRUE, trim partial MCUs as needed */ + boolean force_grayscale; /* if TRUE, convert color image to grayscale */ ++ boolean crop; /* if TRUE, crop source image */ ++ ++ /* Crop parameters: application need not set these unless crop is TRUE. ++ * These can be filled in by jtransform_parse_crop_spec(). ++ */ ++ JDIMENSION crop_width; /* Width of selected region */ ++ JCROP_CODE crop_width_set; ++ JDIMENSION crop_height; /* Height of selected region */ ++ JCROP_CODE crop_height_set; ++ JDIMENSION crop_xoffset; /* X offset of selected region */ ++ JCROP_CODE crop_xoffset_set; /* (negative measures from right edge) */ ++ JDIMENSION crop_yoffset; /* Y offset of selected region */ ++ JCROP_CODE crop_yoffset_set; /* (negative measures from bottom edge) */ ++ ++ /* Drop parameters: set by caller for drop request */ ++ j_decompress_ptr drop_ptr; ++ jvirt_barray_ptr * drop_coef_arrays; + + /* Internal workspace: caller should not touch these */ + int num_components; /* # of components in workspace */ + jvirt_barray_ptr * workspace_coef_arrays; /* workspace for transformations */ ++ JDIMENSION output_width; /* cropped destination dimensions */ ++ JDIMENSION output_height; ++ JDIMENSION x_crop_offset; /* destination crop offsets measured in iMCUs */ ++ JDIMENSION y_crop_offset; ++ JDIMENSION drop_width; /* drop dimensions measured in iMCUs */ ++ JDIMENSION drop_height; ++ int max_h_samp_factor; /* destination iMCU size */ ++ int max_v_samp_factor; + } jpeg_transform_info; + + + #if TRANSFORMS_SUPPORTED + ++/* Parse a crop specification (written in X11 geometry style) */ ++EXTERN(boolean) jtransform_parse_crop_spec ++ JPP((jpeg_transform_info *info, const char *spec)); + /* Request any required workspace */ + EXTERN(void) jtransform_request_workspace + JPP((j_decompress_ptr srcinfo, jpeg_transform_info *info)); +@@ -106,10 +169,24 @@ + jvirt_barray_ptr *src_coef_arrays, + jpeg_transform_info *info)); + /* Execute the actual transformation, if any */ +-EXTERN(void) jtransform_execute_transformation ++EXTERN(void) jtransform_execute_transform + JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo, + jvirt_barray_ptr *src_coef_arrays, + jpeg_transform_info *info)); ++/* Determine whether lossless transformation is perfectly ++ * possible for a specified image and transformation. ++ */ ++EXTERN(boolean) jtransform_perfect_transform ++ JPP((JDIMENSION image_width, JDIMENSION image_height, ++ int MCU_width, int MCU_height, ++ JXFORM_CODE transform)); ++ ++/* jtransform_execute_transform used to be called ++ * jtransform_execute_transformation, but some compilers complain about ++ * routine names that long. This macro is here to avoid breaking any ++ * old source code that uses the original name... ++ */ ++#define jtransform_execute_transformation jtransform_execute_transform + + #endif /* TRANSFORMS_SUPPORTED */ + +@@ -121,7 +198,8 @@ typedef enum { JCOPYOPT_NONE, /* copy no optional markers */ JCOPYOPT_COMMENTS, /* copy only comment (COM) markers */ |