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gerrit-public.fairphone.software / platform / external / libjpeg-turbo / 61a2bbaa9aec89cb2c882d87ace6aba9aee49bb9 / . / cdjpeg.h
blob: a65310e77ea0fad45d1b768d75239016cfb5b038 [file] [log] [blame]
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]1/*
2 * cdjpeg.h
3 *
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]4 * This file was part of the Independent JPEG Group's software:
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]5 * Copyright (C) 1994-1997, Thomas G. Lane.
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]6 * It was modified by The libjpeg-turbo Project to include only code relevant
7 * to libjpeg-turbo.
8 * For conditions of distribution and use, see the accompanying README.ijg
9 * file.
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]10 *
11 * This file contains common declarations for the sample applications
12 * cjpeg and djpeg. It is NOT used by the core JPEG library.
13 */
14
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]15#define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */
16#define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]17#include "jinclude.h"
18#include "jpeglib.h"
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]19#include "jerror.h" /* get library error codes too */
20#include "cderror.h" /* get application-specific error codes */
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]21
22
23/*
24 * Object interface for cjpeg's source file decoding modules
25 */
26
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]27typedef struct cjpeg_source_struct *cjpeg_source_ptr;
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]28
29struct cjpeg_source_struct {
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]30 void (*start_input) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
31 JDIMENSION (*get_pixel_rows) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
32 void (*finish_input) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]33
34 FILE *input_file;
35
36 JSAMPARRAY buffer;
37 JDIMENSION buffer_height;
38};
39
40
41/*
42 * Object interface for djpeg's output file encoding modules
43 */
44
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]45typedef struct djpeg_dest_struct *djpeg_dest_ptr;
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]46
47struct djpeg_dest_struct {
48 /* start_output is called after jpeg_start_decompress finishes.
49 * The color map will be ready at this time, if one is needed.
50 */
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]51 void (*start_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo);
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]52 /* Emit the specified number of pixel rows from the buffer. */
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]53 void (*put_pixel_rows) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
54 JDIMENSION rows_supplied);
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]55 /* Finish up at the end of the image. */
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]56 void (*finish_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo);
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]57
58 /* Target file spec; filled in by djpeg.c after object is created. */
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]59 FILE *output_file;
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]60
61 /* Output pixel-row buffer. Created by module init or start_output.
62 * Width is cinfo->output_width * cinfo->output_components;
63 * height is buffer_height.
64 */
65 JSAMPARRAY buffer;
66 JDIMENSION buffer_height;
67};
68
69
70/*
71 * cjpeg/djpeg may need to perform extra passes to convert to or from
72 * the source/destination file format. The JPEG library does not know
73 * about these passes, but we'd like them to be counted by the progress
74 * monitor. We use an expanded progress monitor object to hold the
75 * additional pass count.
76 */
77
78struct cdjpeg_progress_mgr {
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]79 struct jpeg_progress_mgr pub; /* fields known to JPEG library */
80 int completed_extra_passes; /* extra passes completed */
81 int total_extra_passes; /* total extra */
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]82 /* last printed percentage stored here to avoid multiple printouts */
83 int percent_done;
84};
85
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]86typedef struct cdjpeg_progress_mgr *cd_progress_ptr;
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]87
88
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]89/* Module selection routines for I/O modules. */
90
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]91EXTERN(cjpeg_source_ptr) jinit_read_bmp (j_compress_ptr cinfo);
92EXTERN(djpeg_dest_ptr) jinit_write_bmp (j_decompress_ptr cinfo,
93 boolean is_os2);
94EXTERN(cjpeg_source_ptr) jinit_read_gif (j_compress_ptr cinfo);
95EXTERN(djpeg_dest_ptr) jinit_write_gif (j_decompress_ptr cinfo);
96EXTERN(cjpeg_source_ptr) jinit_read_ppm (j_compress_ptr cinfo);
97EXTERN(djpeg_dest_ptr) jinit_write_ppm (j_decompress_ptr cinfo);
98EXTERN(cjpeg_source_ptr) jinit_read_rle (j_compress_ptr cinfo);
99EXTERN(djpeg_dest_ptr) jinit_write_rle (j_decompress_ptr cinfo);
100EXTERN(cjpeg_source_ptr) jinit_read_targa (j_compress_ptr cinfo);
101EXTERN(djpeg_dest_ptr) jinit_write_targa (j_decompress_ptr cinfo);
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]102
103/* cjpeg support routines (in rdswitch.c) */
104
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]105EXTERN(boolean) read_quant_tables (j_compress_ptr cinfo, char *filename,
106 boolean force_baseline);
107EXTERN(boolean) read_scan_script (j_compress_ptr cinfo, char *filename);
108EXTERN(boolean) set_quality_ratings (j_compress_ptr cinfo, char *arg,
109 boolean force_baseline);
110EXTERN(boolean) set_quant_slots (j_compress_ptr cinfo, char *arg);
111EXTERN(boolean) set_sample_factors (j_compress_ptr cinfo, char *arg);
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]112
113/* djpeg support routines (in rdcolmap.c) */
114
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]115EXTERN(void) read_color_map (j_decompress_ptr cinfo, FILE *infile);
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]116
117/* common support routines (in cdjpeg.c) */
118
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]119EXTERN(void) enable_signal_catcher (j_common_ptr cinfo);
120EXTERN(void) start_progress_monitor (j_common_ptr cinfo,
121 cd_progress_ptr progress);
122EXTERN(void) end_progress_monitor (j_common_ptr cinfo);
123EXTERN(boolean) keymatch (char *arg, const char *keyword, int minchars);
124EXTERN(FILE *) read_stdin (void);
125EXTERN(FILE *) write_stdout (void);
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]126
127/* miscellaneous useful macros */
128
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]129#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
130#define READ_BINARY "r"
131#define WRITE_BINARY "w"
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]132#else
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]133#define READ_BINARY "rb"
134#define WRITE_BINARY "wb"
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]135#endif
136
Tom Hudson0d47d2d2016-05-04 13:22:56 -0400[diff] [blame]137#ifndef EXIT_FAILURE /* define exit() codes if not provided */
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]138#define EXIT_FAILURE 1
139#endif
140#ifndef EXIT_SUCCESS
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]141#define EXIT_SUCCESS 0
142#endif
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]143#ifndef EXIT_WARNING
hbono@chromium.orgf0c4f332010-11-01 05:14:55 +0000[diff] [blame]144#define EXIT_WARNING 2
145#endif