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|
%% options
copyright owner = Dirk Krause
copyright year = 2018-xxxx
SPDX-License-Identifier: BSD-3-Clause
%% header
/** @file dk4bifap.h Bitmap image file handling with application support.
*/
#ifndef DK4CONF_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4conf.h"
#else
#include <dktools-4/dk4conf.h>
#endif
#endif
#ifndef DK4APP_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4app.h"
#else
#include <dktools-4/dk4app.h>
#endif
#endif
#ifndef DK4BIF_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4bif.h"
#else
#include <dktools-4/dk4bif.h>
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** Open bitmap image file by name.
@param fn Input file name.
@param honly Flag: Read image header only.
@param pcsctx Color space conversion context, may be NULL.
@param app Application structure for diagnostics, may be NULL.
@return Valid pointer to bitmap image file on success, NULL on error.
*/
dk4_bif_t *
dk4bif_open_app(
dkChar const *fn,
int honly,
dk4_cs_conv_ctx_t const *pcsctx,
dk4_app_t *app
);
/** Open bitmap image file by opened FILE.
@param fipo File, opened for binary reading.
@param fn File name containing the bitmap image.
Provide a dummy file name here when processing stdin.
@param ty Image file type (PNG, JPEG or TIFF).
@param honly Flag: Read image header only.
@param pcsctx Color space conversion context, may be NULL.
@param app Application structure for diagnostics, may be NULL.
@return Valid pointer to bitmap image file on success, NULL on error.
*/
dk4_bif_t *
dk4bif_open_file_app(
FILE *fipo,
dkChar const *fn,
int ty,
int honly,
dk4_cs_conv_ctx_t const *pcsctx,
dk4_app_t *app
);
/** Find bitmap image file type for file name based on suffix.
@param fn File name to find type for.
@param app Application structure for diagnostics, may be NULL.
*/
int
dk4bif_type_for_suffix_app(
dkChar const *fn,
dk4_app_t *app
);
/** Issue warning about aspect ratio change.
@param bif Bitmap image file containing data about old resolution.
@param xres New x resolution.
@param yres New y resolution.
@param app Application structure for diagnostics, may be NULL.
*/
void
dk4bif_warn_aspect_ratio_change(
dk4_bif_t *bif,
double xres,
double yres,
dk4_app_t *app
);
/** Set image resolution.
@param bif Bitmap image file.
@param xres New x resolution.
@param yres New y resolution.
@param app Application structure for diagnostics, may be NULL.
@return 1 on success, 0 on error.
*/
int
dk4bif_set_res_app(
dk4_bif_t *bif,
double xres,
double yres,
dk4_app_t *app
);
#ifdef __cplusplus
}
#endif
/* vim: set ai sw=4 ts=4 : */
%% module
#include "dk4conf.h"
#if DK4_HAVE_MATH_H
#ifndef MATH_H_INCLUDED
#if DK4_ON_WINDOWS
#ifndef _USE_MATH_DEFINES
#define _USE_MATH_DEFINES 1
#endif
#endif
#include <math.h>
#define MATH_H_INCLUDED 1
#endif
#endif
#ifndef DK4MEM_H_INCLUDED
#include "dk4mem.h"
#endif
#ifndef DK4BIFAP_H_INCLUDED
#include "dk4bifap.h"
#endif
#ifndef BIF_H_INCLUDED
#include "bif.h"
#endif
#ifndef DK4MAODD_H_INCLUDED
#include "dk4maodd.h"
#endif
#ifndef DK4MAODDBL_H_INCLUDED
#include "dk4maoddbl.h"
#endif
#ifndef DK4MATH_H_INCLUDED
#include "dk4math.h"
#endif
#if DK4_HAVE_ASSERT_H
#ifndef ASSERT_H_INCLUDED
#include <assert.h>
#define ASSERT_H_INCLUDED 1
#endif
#endif
$!trace-include
/** File name dummy to use when processing standard input.
*/
static const dkChar dk4bifap_def_fn[] = { dkT("<stdin>") };
/** File name of string table for localizted texts.
*/
static const dkChar dk4bifap_str[] = { dkT("dk4bif.str") };
/** Default texts for diagnostic messages if localized texts are not found.
*/
static const dkChar * const dk4bifap_kw[] = {
$!string-table macro=dkT
#
# 0 File suffix doest not indicate a known image type
#
File suffix does not inidicate a known image type!
#
# 1 Failed to open image
#
Failed to open image!
#
# 2 Syntax error, file probably damaged!
#
Syntax error, file probably damaged!
#
# 3 Failed to open file for reading!
#
Failed to open and/or read file!
#
# 4 File type not supported!
#
File type not supported!
#
# 5 Invalid arguments provided to function call, probably bug!
#
Invalid arguments provided to function call, probably bug!
#
# 6-7 Unusual maxval ... may result in color distorsion!
#
Unusual maxval
!\n\tMay result in color distorsion!
#
# 8-12
#
Aspect ratio changed!\n\tChanging resolution from
/
to
/
dpi.\n\tThis will probably result in an image distorsion.
#
#
#
$!end
};
/** Report error using one text fragment.
@param app Application structure.
@param si Index of text fragment in dk4bifap_kw or
list of localized texts.
*/
static
void
dk4bifap_error_1(
dk4_app_t *app,
size_t si
)
{
const dkChar * const *msg = dk4bifap_kw; /* Localized texs */
size_t sz_msg; /* Size of msg array */
sz_msg = dk4app_string_table_size(dk4bifap_kw);
msg = dk4app_string_table(app, dk4bifap_str, dk4bifap_kw);
dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, si);
}
/** Report errors from attempt to open a bitmap image file.
@param fn File name to read.
@param erp Error report containing error information.
@param app Application structure for diagnostics, may be NULL.
*/
static
void
dk4bif_error_open_app(
dkChar const *fn,
dk4_er_t *erp,
dk4_app_t *app
)
{
dkChar const *oldsourcefile; /* Previous source file name to save */
dk4_um_t oldsourceline; /* Previous source line no to save */
oldsourcefile = dk4app_get_log_source_file(app);
oldsourceline = dk4app_get_log_source_line(app);
if (NULL == fn) { fn = dk4bifap_def_fn; }
dk4app_set_log_source_file(app, fn);
dk4app_set_log_source_line(app, 0UL);
dk4bifap_error_1(app, 1);
switch (erp->ec) {
case DK4_E_MEMORY_ALLOCATION_FAILED : {
dk4app_log_base1(app, DK4_LL_ERROR, 90);
} break;
case DK4_E_SYNTAX : {
dk4bifap_error_1(app, 2);
} break;
case DK4_E_MATH_OVERFLOW : {
dk4app_log_base1(app, DK4_LL_ERROR, 82);
} break;
case DK4_E_NOT_FOUND : {
dk4bifap_error_1(app, 0);
} break;
case DK4_E_READ_FAILED : {
dk4bifap_error_1(app, 3);
} break;
case DK4_E_NOT_SUPPORTED : {
dk4bifap_error_1(app, 4);
} break;
case DK4_E_INVALID_ARGUMENTS : {
dk4bifap_error_1(app, 5);
} break;
}
dk4app_set_log_source_file(app, oldsourcefile);
dk4app_set_log_source_line(app, oldsourceline);
}
/** Check whether the bitmap image file is NetPBM type and has an
unusual maxval, report unusual maxval.
@param bif Bitmap image file to check.
@param app Application structure for diagnostics, may be NULL.
*/
static
void
dk4bifap_check_netpbm_maxval(
dk4_bif_t *bif,
dk4_app_t *app
)
{
dkChar buf[16*sizeof(dk4_um_t)]; /* Buffer */
dkChar const * const *msg = dk4bifap_kw; /* Localized */
dkChar const *oldsourcefile; /* Previous src file */
dk4_bif_netpbm_per_frame_t *npfd; /* Per-frame data */
dk4_bif_frame_t *frptr; /* Current frame */
dkChar const *fn = NULL; /* File name */
dk4_um_t oldsourceline; /* Previous src line */
size_t sz_msg; /* Size of msg array */
int res; /* Operation result */
dk4_px_t bdspec; /* Maximum value for bpc */
dk4_px_t bdmaxv; /* Maxval */
$? "+ dk4bifap_check_netpbm_maxval"
#if DK4_USE_ASSERT
assert(NULL != bif);
assert(NULL != app);
#endif
if ((NULL != bif) && (NULL != app)) {
switch (bif->imgtype) {
case DK4_BIF_TYPE_NETPBM : {
dk4sto_it_reset(bif->i_frames);
do {
frptr = (dk4_bif_frame_t *)dk4sto_it_next(bif->i_frames);
if (NULL != frptr) {
npfd = (dk4_bif_netpbm_per_frame_t *)(frptr->tsdata);
bdspec = dk4pxbit_get_max(npfd->bpc);
bdmaxv = npfd->maxval;
if (bdspec != bdmaxv) {
fn = bif->filename;
res = dk4ma_write_decimal_unsigned(
buf, DK4_SIZEOF(buf,dkChar), bdmaxv, 0, NULL
);
if (0 != res) {
oldsourcefile = dk4app_get_log_source_file(app);
oldsourceline = dk4app_get_log_source_line(app);
dk4app_set_log_source_file(app, fn);
dk4app_set_log_source_line(app, (dk4_um_t)0UL);
sz_msg = dk4app_string_table_size(dk4bifap_kw);
msg = dk4app_string_table(
app, dk4bifap_str, dk4bifap_kw
);
dk4app_log_3(
app, msg, sz_msg, DK4_LL_WARNING, 6, 7, buf
);
dk4app_set_log_source_file(app, oldsourcefile);
dk4app_set_log_source_line(app, oldsourceline);
}
}
}
} while (NULL != frptr);
dk4sto_it_reset(bif->i_frames);
} break;
}
}
$? "- dk4bifap_check_netpbm_maxval"
}
dk4_bif_t *
dk4bif_open_app(
dkChar const *fn,
int honly,
dk4_cs_conv_ctx_t const *pcsctx,
dk4_app_t *app
)
{
dk4_er_t er; /* Error report */
dk4_bif_t *back = NULL; /* Function result */
$? "+ dk4bif_open_app \"%!ds\"", TR_STR(fn)
#if DK4_USE_ASSERT
assert(NULL != fn);
#endif
dk4error_init(&er);
back = dk4bif_open(fn, honly, pcsctx, &er);
if ((NULL == back) && (NULL != app)) {
$? "! failed to open bif"
dk4bif_error_open_app(fn, &er, app);
}
if (NULL != back) {
$? ". going to check maxval"
dk4bifap_check_netpbm_maxval(back, app);
}
$? "- dk4bif_open_app %d", TR_IPTR(back)
return back;
}
dk4_bif_t *
dk4bif_open_file_app(
FILE *fipo,
dkChar const *fn,
int ty,
int honly,
dk4_cs_conv_ctx_t const *pcsctx,
dk4_app_t *app
)
{
dk4_er_t er;
dk4_bif_t *back = NULL;
$? "+ dk4bif_open_file_app %d", TR_IPTR(fipo)
#if DK4_USE_ASSERT
assert(NULL != fipo);
#endif
dk4error_init(&er);
back = dk4bif_open_file(fipo, fn, ty, honly, pcsctx, &er);
if ((NULL == back) && (NULL != app)) {
$? "! failed to open bif"
dk4bif_error_open_app(fn, &er, app);
}
if (NULL != back) {
$? ". going to check maxval"
dk4bifap_check_netpbm_maxval(back, app);
}
$? "- dk4bif_open_file_app %d", TR_IPTR(back)
return back;
}
int
dk4bif_type_for_suffix_app(
dkChar const *fn,
dk4_app_t *app
)
{
const dkChar *oldsourcefile = NULL; /* Previous source file name */
dk4_um_t oldsourceline = 0UL; /* Previous source line no */
int back = -1;
$? "+ dk4bif_type_for_suffix_app"
#if DK4_USE_ASSERT
assert(NULL != fn);
#endif
if (NULL != fn) {
back = dk4bif_type_for_suffix(fn);
if ((0 > back) && (NULL != app)) {
oldsourcefile = dk4app_get_log_source_file(app);
oldsourceline = dk4app_get_log_source_line(app);
dk4app_set_log_source_file(app, fn);
dk4app_set_log_source_line(app, 0UL);
/* ##### ERROR: Not a known bitmap image file type */
dk4app_set_log_source_file(app, oldsourcefile);
dk4app_set_log_source_line(app, oldsourceline);
}
}
$? "- dk4bif_type_for_suffix_app %d", back
return back;
}
void
dk4bif_warn_aspect_ratio_change(
dk4_bif_t *bif,
double xres,
double yres,
dk4_app_t *app
)
{
dkChar b1[64];
dkChar b2[64];
dkChar b3[64];
dkChar b4[64];
const dkChar *p[16];
const dkChar * const *msg = dk4bifap_kw;
$? "+ dk4bif_warn_aspect_ratio_change"
#if DK4_USE_ASSERT
assert(NULL != bif);
#endif
dk4ma_write_double(b1, 64, bif->cf->res_x, 0, 1, NULL);
dk4ma_write_double(b2, 64, bif->cf->res_y, 0, 1, NULL);
dk4ma_write_double(b3, 64, xres, 0, 1, NULL);
dk4ma_write_double(b4, 64, yres, 0, 1, NULL);
/* WARNING: Resolution setting changes aspect ratio */
msg = dk4app_string_table(app, dk4bifap_str, dk4bifap_kw);
p[0] = msg[8];
p[1] = b1;
p[2] = msg[9];
p[3] = b2;
p[4] = msg[10];
p[5] = b3;
p[6] = msg[11];
p[7] = b4;
p[8] = msg[12];
dk4app_log_msg(app, DK4_LL_WARNING, p, 9);
$? "- dk4bif_warn_aspect_ratio_change"
}
int
dk4bif_set_res_app(
dk4_bif_t *bif,
double xres,
double yres,
dk4_app_t *app
)
{
double qo; /* Quotient of old resolutions */
double qn; /* Quotient of new resolutions */
int back = 0;
$? "+ dk4bif_set_res_app %lg %lg", xres, yres
#if DK4_USE_ASSERT
assert(NULL != bif);
assert(0.0 < xres);
assert(0.0 < yres);
#endif
if ((NULL != bif) && (0.0 < xres) && (0.0 < yres)) { $? ". args ok"
if (NULL != bif->cf) { $? ". have bif"
if ((0.0 < bif->cf->res_x) && (0.0 < bif->cf->res_y)) {
$? ". res old=%lg/%lg", bif->cf->res_x, bif->cf->res_y
qo = bif->cf->res_y / bif->cf->res_x;
qn = yres / xres;
if ((0 != dk4ma_is_finite(qo)) && (0 != dk4ma_is_finite(qn))) {
if (DK4_BIF_EPSILON_ASPECT <= fabs(qn - qo)) { $? ". diff"
dk4bif_warn_aspect_ratio_change(
bif, xres, yres, app
);
}
}
}
bif->cf->res_x = xres;
bif->cf->res_y = yres;
back = 1;
}
}
else {
/* ERROR: Invalid arguments */
}
$? "- dk4bif_set_res_app %d", back
return back;
}
/* vim: set ai sw=4 ts=4 : */
|