| Index: third_party/libpng/pnginfo.h
|
| diff --git a/third_party/libpng/pnginfo.h b/third_party/libpng/pnginfo.h
|
| deleted file mode 100644
|
| index 26bf26502cf2d9fbfe7cdef0db3fbfdea1fdd376..0000000000000000000000000000000000000000
|
| --- a/third_party/libpng/pnginfo.h
|
| +++ /dev/null
|
| @@ -1,260 +0,0 @@
|
| -
|
| -/* pnginfo.h - header file for PNG reference library
|
| - *
|
| - * Copyright (c) 1998-2013 Glenn Randers-Pehrson
|
| - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
| - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
|
| - *
|
| - * Last changed in libpng 1.6.1 [March 28, 2013]
|
| - *
|
| - * This code is released under the libpng license.
|
| - * For conditions of distribution and use, see the disclaimer
|
| - * and license in png.h
|
| - */
|
| -
|
| - /* png_info is a structure that holds the information in a PNG file so
|
| - * that the application can find out the characteristics of the image.
|
| - * If you are reading the file, this structure will tell you what is
|
| - * in the PNG file. If you are writing the file, fill in the information
|
| - * you want to put into the PNG file, using png_set_*() functions, then
|
| - * call png_write_info().
|
| - *
|
| - * The names chosen should be very close to the PNG specification, so
|
| - * consult that document for information about the meaning of each field.
|
| - *
|
| - * With libpng < 0.95, it was only possible to directly set and read the
|
| - * the values in the png_info_struct, which meant that the contents and
|
| - * order of the values had to remain fixed. With libpng 0.95 and later,
|
| - * however, there are now functions that abstract the contents of
|
| - * png_info_struct from the application, so this makes it easier to use
|
| - * libpng with dynamic libraries, and even makes it possible to use
|
| - * libraries that don't have all of the libpng ancillary chunk-handing
|
| - * functionality. In libpng-1.5.0 this was moved into a separate private
|
| - * file that is not visible to applications.
|
| - *
|
| - * The following members may have allocated storage attached that should be
|
| - * cleaned up before the structure is discarded: palette, trans, text,
|
| - * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
|
| - * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these
|
| - * are automatically freed when the info structure is deallocated, if they were
|
| - * allocated internally by libpng. This behavior can be changed by means
|
| - * of the png_data_freer() function.
|
| - *
|
| - * More allocation details: all the chunk-reading functions that
|
| - * change these members go through the corresponding png_set_*
|
| - * functions. A function to clear these members is available: see
|
| - * png_free_data(). The png_set_* functions do not depend on being
|
| - * able to point info structure members to any of the storage they are
|
| - * passed (they make their own copies), EXCEPT that the png_set_text
|
| - * functions use the same storage passed to them in the text_ptr or
|
| - * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
|
| - * functions do not make their own copies.
|
| - */
|
| -#ifndef PNGINFO_H
|
| -#define PNGINFO_H
|
| -
|
| -struct png_info_def
|
| -{
|
| - /* The following are necessary for every PNG file */
|
| - png_uint_32 width; /* width of image in pixels (from IHDR) */
|
| - png_uint_32 height; /* height of image in pixels (from IHDR) */
|
| - png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */
|
| - png_size_t rowbytes; /* bytes needed to hold an untransformed row */
|
| - png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */
|
| - png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
|
| - png_uint_16 num_trans; /* number of transparent palette color (tRNS) */
|
| - png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
|
| - png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */
|
| - /* The following three should have been named *_method not *_type */
|
| - png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
|
| - png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
|
| - png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
|
| -
|
| - /* The following are set by png_set_IHDR, called from the application on
|
| - * write, but the are never actually used by the write code.
|
| - */
|
| - png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */
|
| - png_byte pixel_depth; /* number of bits per pixel */
|
| - png_byte spare_byte; /* to align the data, and for future use */
|
| -
|
| -#ifdef PNG_READ_SUPPORTED
|
| - /* This is never set during write */
|
| - png_byte signature[8]; /* magic bytes read by libpng from start of file */
|
| -#endif
|
| -
|
| - /* The rest of the data is optional. If you are reading, check the
|
| - * valid field to see if the information in these are valid. If you
|
| - * are writing, set the valid field to those chunks you want written,
|
| - * and initialize the appropriate fields below.
|
| - */
|
| -
|
| -#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
|
| - /* png_colorspace only contains 'flags' if neither GAMMA or COLORSPACE are
|
| - * defined. When COLORSPACE is switched on all the colorspace-defining
|
| - * chunks should be enabled, when GAMMA is switched on all the gamma-defining
|
| - * chunks should be enabled. If this is not done it becomes possible to read
|
| - * inconsistent PNG files and assign a probably incorrect interpretation to
|
| - * the information. (In other words, by carefully choosing which chunks to
|
| - * recognize the system configuration can select an interpretation for PNG
|
| - * files containing ambiguous data and this will result in inconsistent
|
| - * behavior between different libpng builds!)
|
| - */
|
| - png_colorspace colorspace;
|
| -#endif
|
| -
|
| -#ifdef PNG_iCCP_SUPPORTED
|
| - /* iCCP chunk data. */
|
| - png_charp iccp_name; /* profile name */
|
| - png_bytep iccp_profile; /* International Color Consortium profile data */
|
| - png_uint_32 iccp_proflen; /* ICC profile data length */
|
| -#endif
|
| -
|
| -#ifdef PNG_TEXT_SUPPORTED
|
| - /* The tEXt, and zTXt chunks contain human-readable textual data in
|
| - * uncompressed, compressed, and optionally compressed forms, respectively.
|
| - * The data in "text" is an array of pointers to uncompressed,
|
| - * null-terminated C strings. Each chunk has a keyword that describes the
|
| - * textual data contained in that chunk. Keywords are not required to be
|
| - * unique, and the text string may be empty. Any number of text chunks may
|
| - * be in an image.
|
| - */
|
| - int num_text; /* number of comments read or comments to write */
|
| - int max_text; /* current size of text array */
|
| - png_textp text; /* array of comments read or comments to write */
|
| -#endif /* PNG_TEXT_SUPPORTED */
|
| -
|
| -#ifdef PNG_tIME_SUPPORTED
|
| - /* The tIME chunk holds the last time the displayed image data was
|
| - * modified. See the png_time struct for the contents of this struct.
|
| - */
|
| - png_time mod_time;
|
| -#endif
|
| -
|
| -#ifdef PNG_sBIT_SUPPORTED
|
| - /* The sBIT chunk specifies the number of significant high-order bits
|
| - * in the pixel data. Values are in the range [1, bit_depth], and are
|
| - * only specified for the channels in the pixel data. The contents of
|
| - * the low-order bits is not specified. Data is valid if
|
| - * (valid & PNG_INFO_sBIT) is non-zero.
|
| - */
|
| - png_color_8 sig_bit; /* significant bits in color channels */
|
| -#endif
|
| -
|
| -#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
|
| -defined(PNG_READ_BACKGROUND_SUPPORTED)
|
| - /* The tRNS chunk supplies transparency data for paletted images and
|
| - * other image types that don't need a full alpha channel. There are
|
| - * "num_trans" transparency values for a paletted image, stored in the
|
| - * same order as the palette colors, starting from index 0. Values
|
| - * for the data are in the range [0, 255], ranging from fully transparent
|
| - * to fully opaque, respectively. For non-paletted images, there is a
|
| - * single color specified that should be treated as fully transparent.
|
| - * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
|
| - */
|
| - png_bytep trans_alpha; /* alpha values for paletted image */
|
| - png_color_16 trans_color; /* transparent color for non-palette image */
|
| -#endif
|
| -
|
| -#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
|
| - /* The bKGD chunk gives the suggested image background color if the
|
| - * display program does not have its own background color and the image
|
| - * is needs to composited onto a background before display. The colors
|
| - * in "background" are normally in the same color space/depth as the
|
| - * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
|
| - */
|
| - png_color_16 background;
|
| -#endif
|
| -
|
| -#ifdef PNG_oFFs_SUPPORTED
|
| - /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
|
| - * and downwards from the top-left corner of the display, page, or other
|
| - * application-specific co-ordinate space. See the PNG_OFFSET_ defines
|
| - * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero.
|
| - */
|
| - png_int_32 x_offset; /* x offset on page */
|
| - png_int_32 y_offset; /* y offset on page */
|
| - png_byte offset_unit_type; /* offset units type */
|
| -#endif
|
| -
|
| -#ifdef PNG_pHYs_SUPPORTED
|
| - /* The pHYs chunk gives the physical pixel density of the image for
|
| - * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
|
| - * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
|
| - */
|
| - png_uint_32 x_pixels_per_unit; /* horizontal pixel density */
|
| - png_uint_32 y_pixels_per_unit; /* vertical pixel density */
|
| - png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */
|
| -#endif
|
| -
|
| -#ifdef PNG_hIST_SUPPORTED
|
| - /* The hIST chunk contains the relative frequency or importance of the
|
| - * various palette entries, so that a viewer can intelligently select a
|
| - * reduced-color palette, if required. Data is an array of "num_palette"
|
| - * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
|
| - * is non-zero.
|
| - */
|
| - png_uint_16p hist;
|
| -#endif
|
| -
|
| -#ifdef PNG_pCAL_SUPPORTED
|
| - /* The pCAL chunk describes a transformation between the stored pixel
|
| - * values and original physical data values used to create the image.
|
| - * The integer range [0, 2^bit_depth - 1] maps to the floating-point
|
| - * range given by [pcal_X0, pcal_X1], and are further transformed by a
|
| - * (possibly non-linear) transformation function given by "pcal_type"
|
| - * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_
|
| - * defines below, and the PNG-Group's PNG extensions document for a
|
| - * complete description of the transformations and how they should be
|
| - * implemented, and for a description of the ASCII parameter strings.
|
| - * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
|
| - */
|
| - png_charp pcal_purpose; /* pCAL chunk description string */
|
| - png_int_32 pcal_X0; /* minimum value */
|
| - png_int_32 pcal_X1; /* maximum value */
|
| - png_charp pcal_units; /* Latin-1 string giving physical units */
|
| - png_charpp pcal_params; /* ASCII strings containing parameter values */
|
| - png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */
|
| - png_byte pcal_nparams; /* number of parameters given in pcal_params */
|
| -#endif
|
| -
|
| -/* New members added in libpng-1.0.6 */
|
| - png_uint_32 free_me; /* flags items libpng is responsible for freeing */
|
| -
|
| -#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
|
| - /* Storage for unknown chunks that the library doesn't recognize. */
|
| - png_unknown_chunkp unknown_chunks;
|
| -
|
| - /* The type of this field is limited by the type of
|
| - * png_struct::user_chunk_cache_max, else overflow can occur.
|
| - */
|
| - int unknown_chunks_num;
|
| -#endif
|
| -
|
| -#ifdef PNG_sPLT_SUPPORTED
|
| - /* Data on sPLT chunks (there may be more than one). */
|
| - png_sPLT_tp splt_palettes;
|
| - int splt_palettes_num; /* Match type returned by png_get API */
|
| -#endif
|
| -
|
| -#ifdef PNG_sCAL_SUPPORTED
|
| - /* The sCAL chunk describes the actual physical dimensions of the
|
| - * subject matter of the graphic. The chunk contains a unit specification
|
| - * a byte value, and two ASCII strings representing floating-point
|
| - * values. The values are width and height corresponsing to one pixel
|
| - * in the image. Data values are valid if (valid & PNG_INFO_sCAL) is
|
| - * non-zero.
|
| - */
|
| - png_byte scal_unit; /* unit of physical scale */
|
| - png_charp scal_s_width; /* string containing height */
|
| - png_charp scal_s_height; /* string containing width */
|
| -#endif
|
| -
|
| -#ifdef PNG_INFO_IMAGE_SUPPORTED
|
| - /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
|
| - non-zero */
|
| - /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
|
| - png_bytepp row_pointers; /* the image bits */
|
| -#endif
|
| -
|
| -};
|
| -#endif /* PNGINFO_H */
|
|
|
Chromium Code Reviews
