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gecko/gfx/qcms/iccread.c

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/*
// qcms
// Copyright (C) 2009 Mozilla Foundation
// Copyright (C) 1998-2007 Marti Maria
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <math.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "qcmsint.h"
typedef uint32_t be32;
typedef uint16_t be16;
#if 0
not used yet
/* __builtin_bswap isn't available in older gccs
* so open code it for now */
static be32 cpu_to_be32(int32_t v)
{
#ifdef IS_LITTLE_ENDIAN
return ((v & 0xff) << 24) | ((v & 0xff00) << 8) | ((v & 0xff0000) >> 8) | ((v & 0xff000000) >> 24);
//return __builtin_bswap32(v);
return v;
#endif
}
#endif
static uint32_t be32_to_cpu(be32 v)
{
#ifdef IS_LITTLE_ENDIAN
return ((v & 0xff) << 24) | ((v & 0xff00) << 8) | ((v & 0xff0000) >> 8) | ((v & 0xff000000) >> 24);
//return __builtin_bswap32(v);
#else
return v;
#endif
}
static uint16_t be16_to_cpu(be16 v)
{
#ifdef IS_LITTLE_ENDIAN
return ((v & 0xff) << 8) | ((v & 0xff00) >> 8);
#else
return v;
#endif
}
/* a wrapper around the memory that we are going to parse
* into a qcms_profile */
struct mem_source
{
const unsigned char *buf;
size_t size;
qcms_bool valid;
const char *invalid_reason;
};
static void invalid_source(struct mem_source *mem, const char *reason)
{
mem->valid = false;
mem->invalid_reason = reason;
}
static uint32_t read_u32(struct mem_source *mem, size_t offset)
{
/* Subtract from mem->size instead of the more intuitive adding to offset.
* This avoids overflowing offset. The subtraction is safe because
* mem->size is guaranteed to be > 4 */
if (offset > mem->size - 4) {
invalid_source(mem, "Invalid offset");
return 0;
} else {
be32 k;
memcpy(&k, mem->buf + offset, sizeof(k));
return be32_to_cpu(k);
}
}
static uint16_t read_u16(struct mem_source *mem, size_t offset)
{
if (offset > mem->size - 2) {
invalid_source(mem, "Invalid offset");
return 0;
} else {
be16 k;
memcpy(&k, mem->buf + offset, sizeof(k));
return be16_to_cpu(k);
}
}
static uint8_t read_u8(struct mem_source *mem, size_t offset)
{
if (offset > mem->size - 1) {
invalid_source(mem, "Invalid offset");
return 0;
} else {
return *(uint8_t*)(mem->buf + offset);
}
}
static s15Fixed16Number read_s15Fixed16Number(struct mem_source *mem, size_t offset)
{
return read_u32(mem, offset);
}
#if 0
static uInt16Number read_uInt16Number(struct mem_source *mem, size_t offset)
{
return read_u16(mem, offset);
}
#endif
#define BAD_VALUE_PROFILE NULL
#define INVALID_PROFILE NULL
#define NO_MEM_PROFILE NULL
/* An arbitrary 4MB limit on profile size */
#define MAX_PROFILE_SIZE 1024*1024*4
#define MAX_TAG_COUNT 1024
static void check_CMM_type_signature(struct mem_source *src)
{
//uint32_t CMM_type_signature = read_u32(src, 4);
//TODO: do the check?
}
static void check_profile_version(struct mem_source *src)
{
uint8_t major_revision = read_u8(src, 8 + 0);
uint8_t minor_revision = read_u8(src, 8 + 1);
uint8_t reserved1 = read_u8(src, 8 + 2);
uint8_t reserved2 = read_u8(src, 8 + 3);
if (major_revision != 0x4) {
if (major_revision > 0x2)
invalid_source(src, "Unsupported major revision");
if (minor_revision > 0x40)
invalid_source(src, "Unsupported minor revision");
}
if (reserved1 != 0 || reserved2 != 0)
invalid_source(src, "Invalid reserved bytes");
}
#define INPUT_DEVICE_PROFILE 0x73636e72 // 'scnr'
#define DISPLAY_DEVICE_PROFILE 0x6d6e7472 // 'mntr'
#define OUTPUT_DEVICE_PROFILE 0x70727472 // 'prtr'
#define DEVICE_LINK_PROFILE 0x6c696e6b // 'link'
#define COLOR_SPACE_PROFILE 0x73706163 // 'spac'
#define ABSTRACT_PROFILE 0x61627374 // 'abst'
#define NAMED_COLOR_PROFILE 0x6e6d636c // 'nmcl'
static void read_class_signature(qcms_profile *profile, struct mem_source *mem)
{
profile->class = read_u32(mem, 12);
switch (profile->class) {
case DISPLAY_DEVICE_PROFILE:
case INPUT_DEVICE_PROFILE:
break;
case OUTPUT_DEVICE_PROFILE:
default:
invalid_source(mem, "Invalid Profile/Device Class signature");
}
}
static void read_color_space(qcms_profile *profile, struct mem_source *mem)
{
profile->color_space = read_u32(mem, 16);
switch (profile->color_space) {
case RGB_SIGNATURE:
case GRAY_SIGNATURE:
break;
default:
invalid_source(mem, "Unsupported colorspace");
}
}
struct tag
{
uint32_t signature;
uint32_t offset;
uint32_t size;
};
struct tag_index {
uint32_t count;
struct tag *tags;
};
static struct tag_index read_tag_table(qcms_profile *profile, struct mem_source *mem)
{
struct tag_index index = {0, NULL};
unsigned int i;
index.count = read_u32(mem, 128);
if (index.count > MAX_TAG_COUNT) {
invalid_source(mem, "max number of tags exceeded");
return index;
}
index.tags = malloc(sizeof(struct tag)*index.count);
if (index.tags) {
for (i = 0; i < index.count; i++) {
index.tags[i].signature = read_u32(mem, 128 + 4 + 4*i*3);
index.tags[i].offset = read_u32(mem, 128 + 4 + 4*i*3 + 4);
index.tags[i].size = read_u32(mem, 128 + 4 + 4*i*3 + 8);
}
}
return index;
}
// Checks a profile for obvious inconsistencies and returns
// true if the profile looks bogus and should probably be
// ignored.
qcms_bool qcms_profile_is_bogus(qcms_profile *profile)
{
float sum[3], target[3], tolerance[3];
float rX, rY, rZ, gX, gY, gZ, bX, bY, bZ;
bool negative;
unsigned i;
// We currently only check the bogosity of RGB profiles
if (profile->color_space != RGB_SIGNATURE)
return false;
rX = s15Fixed16Number_to_float(profile->redColorant.X);
rY = s15Fixed16Number_to_float(profile->redColorant.Y);
rZ = s15Fixed16Number_to_float(profile->redColorant.Z);
gX = s15Fixed16Number_to_float(profile->greenColorant.X);
gY = s15Fixed16Number_to_float(profile->greenColorant.Y);
gZ = s15Fixed16Number_to_float(profile->greenColorant.Z);
bX = s15Fixed16Number_to_float(profile->blueColorant.X);
bY = s15Fixed16Number_to_float(profile->blueColorant.Y);
bZ = s15Fixed16Number_to_float(profile->blueColorant.Z);
// Check if any of the XYZ values are negative (see mozilla bug 498245)
// CIEXYZ tristimulus values cannot be negative according to the spec.
negative =
(rX < 0) || (rY < 0) || (rZ < 0) ||
(gX < 0) || (gY < 0) || (gZ < 0) ||
(bX < 0) || (bY < 0) || (bZ < 0);
if (negative)
return true;
// Sum the values; they should add up to something close to white
sum[0] = rX + gX + bX;
sum[1] = rY + gY + bY;
sum[2] = rZ + gZ + bZ;
// Build our target vector (see mozilla bug 460629)
target[0] = 0.96420;
target[1] = 1.00000;
target[2] = 0.82491;
// Our tolerance vector - Recommended by Chris Murphy based on
// conversion from the LAB space criterion of no more than 3 in any one
// channel. This is similar to, but slightly more tolerant than Adobe's
// criterion.
tolerance[0] = 0.02;
tolerance[1] = 0.02;
tolerance[2] = 0.04;
// Compare with our tolerance
for (i = 0; i < 3; ++i) {
if (!(((sum[i] - tolerance[i]) <= target[i]) &&
((sum[i] + tolerance[i]) >= target[i])))
return true;
}
// All Good
return false;
}
#define TAG_bXYZ 0x6258595a
#define TAG_gXYZ 0x6758595a
#define TAG_rXYZ 0x7258595a
#define TAG_rTRC 0x72545243
#define TAG_bTRC 0x62545243
#define TAG_gTRC 0x67545243
#define TAG_kTRC 0x6b545243
#define TAG_A2B0 0x41324230
static struct tag *find_tag(struct tag_index index, uint32_t tag_id)
{
unsigned int i;
struct tag *tag = NULL;
for (i = 0; i < index.count; i++) {
if (index.tags[i].signature == tag_id) {
return &index.tags[i];
}
}
return tag;
}
#define XYZ_TYPE 0x58595a20 // 'XYZ '
#define CURVE_TYPE 0x63757276 // 'curv'
#define LUT16_TYPE 0x6d667432 // 'mft2'
#define LUT8_TYPE 0x6d667431 // 'mft1'
static struct XYZNumber read_tag_XYZType(struct mem_source *src, struct tag_index index, uint32_t tag_id)
{
struct XYZNumber num = {0, 0, 0};
struct tag *tag = find_tag(index, tag_id);
if (tag) {
uint32_t offset = tag->offset;
uint32_t type = read_u32(src, offset);
if (type != XYZ_TYPE)
invalid_source(src, "unexpected type, expected XYZ");
num.X = read_s15Fixed16Number(src, offset+8);
num.Y = read_s15Fixed16Number(src, offset+12);
num.Z = read_s15Fixed16Number(src, offset+16);
} else {
invalid_source(src, "missing xyztag");
}
return num;
}
static struct curveType *read_tag_curveType(struct mem_source *src, struct tag_index index, uint32_t tag_id)
{
struct tag *tag = find_tag(index, tag_id);
struct curveType *curve = NULL;
if (tag) {
uint32_t offset = tag->offset;
uint32_t type = read_u32(src, offset);
uint32_t count = read_u32(src, offset+8);
unsigned int i;
if (type != CURVE_TYPE) {
invalid_source(src, "unexpected type, expected CURV");
return NULL;
}
#define MAX_CURVE_ENTRIES 40000 //arbitrary
if (count > MAX_CURVE_ENTRIES) {
invalid_source(src, "curve size too large");
return NULL;
}
curve = malloc(sizeof(struct curveType) + sizeof(uInt16Number)*count);
if (!curve)
return NULL;
curve->count = count;
for (i=0; i<count; i++) {
curve->data[i] = read_u16(src, offset + 12 + i *2);
}
} else {
invalid_source(src, "missing curvetag");
}
return curve;
}
/* This function's not done yet */
static struct lutType *read_tag_lutType(struct mem_source *src, struct tag_index index, uint32_t tag_id)
{
struct tag *tag = find_tag(index, tag_id);
uint32_t offset = tag->offset;
uint32_t type = read_u32(src, offset);
uint16_t num_input_table_entries;
uint16_t num_output_table_entries;
uint8_t in_chan, grid_points, out_chan;
uint32_t clut_size;
struct lutType *lut;
int i;
num_input_table_entries = read_u16(src, offset + 48);
num_output_table_entries = read_u16(src, offset + 50);
in_chan = read_u8(src, offset + 8);
out_chan = read_u8(src, offset + 9);
grid_points = read_u8(src, offset + 10);
if (!src->valid)
return NULL;
clut_size = in_chan * grid_points * out_chan;
#define MAX_CLUT_SIZE 10000 // arbitrary
if (clut_size > MAX_CLUT_SIZE) {
return NULL;
}
if (type != LUT16_TYPE && type != LUT8_TYPE)
return NULL;
lut = malloc(sizeof(struct lutType) + (clut_size + num_input_table_entries + num_output_table_entries)*sizeof(uint8_t));
if (!lut)
return NULL;
lut->num_input_channels = read_u8(src, offset + 8);
lut->num_output_channels = read_u8(src, offset + 9);
lut->num_clut_grid_points = read_u8(src, offset + 10);
lut->e00 = read_s15Fixed16Number(src, offset+12);
lut->e01 = read_s15Fixed16Number(src, offset+16);
lut->e02 = read_s15Fixed16Number(src, offset+20);
lut->e10 = read_s15Fixed16Number(src, offset+24);
lut->e11 = read_s15Fixed16Number(src, offset+28);
lut->e12 = read_s15Fixed16Number(src, offset+32);
lut->e20 = read_s15Fixed16Number(src, offset+36);
lut->e21 = read_s15Fixed16Number(src, offset+40);
lut->e22 = read_s15Fixed16Number(src, offset+44);
//TODO: finish up
return lut;
}
static void read_rendering_intent(qcms_profile *profile, struct mem_source *src)
{
profile->rendering_intent = read_u32(src, 64);
switch (profile->rendering_intent) {
case QCMS_INTENT_PERCEPTUAL:
case QCMS_INTENT_SATURATION:
case QCMS_INTENT_RELATIVE_COLORIMETRIC:
case QCMS_INTENT_ABSOLUTE_COLORIMETRIC:
break;
default:
invalid_source(src, "unknown rendering intent");
}
}
qcms_profile *qcms_profile_create(void)
{
return calloc(sizeof(qcms_profile), 1);
}
/* build sRGB gamma table */
/* based on cmsBuildParametricGamma() */
static uint16_t *build_sRGB_gamma_table(int num_entries)
{
int i;
/* taken from lcms: Build_sRGBGamma() */
double gamma = 2.4;
double a = 1./1.055;
double b = 0.055/1.055;
double c = 1./12.92;
double d = 0.04045;
uint16_t *table = malloc(sizeof(uint16_t) * num_entries);
if (!table)
return NULL;
for (i=0; i<num_entries; i++) {
double x = (double)i / (num_entries-1);
double y, output;
// IEC 61966-2.1 (sRGB)
// Y = (aX + b)^Gamma | X >= d
// Y = cX | X < d
if (x >= d) {
double e = (a*x + b);
if (e > 0)
y = pow(e, gamma);
else
y = 0;
} else {
y = c*x;
}
// Saturate -- this could likely move to a separate function
output = y * 65535. + .5;
if (output > 65535.)
output = 65535;
if (output < 0)
output = 0;
table[i] = (uint16_t)floor(output);
}
return table;
}
static struct curveType *curve_from_table(uint16_t *table, int num_entries)
{
struct curveType *curve;
int i;
curve = malloc(sizeof(struct curveType) + sizeof(uInt16Number)*num_entries);
if (!curve)
return NULL;
curve->count = num_entries;
for (i = 0; i < num_entries; i++) {
curve->data[i] = table[i];
}
return curve;
}
static uint16_t float_to_u8Fixed8Number(float a)
{
if (a > (255. + 255./256))
return 0xffff;
else if (a < 0.)
return 0;
else
return floor(a*256. + .5);
}
static struct curveType *curve_from_gamma(float gamma)
{
struct curveType *curve;
int num_entries = 1;
curve = malloc(sizeof(struct curveType) + sizeof(uInt16Number)*num_entries);
if (!curve)
return NULL;
curve->count = num_entries;
curve->data[0] = float_to_u8Fixed8Number(gamma);
return curve;
}
static void qcms_profile_fini(qcms_profile *profile)
{
free(profile->redTRC);
free(profile->blueTRC);
free(profile->greenTRC);
free(profile->grayTRC);
free(profile);
}
//XXX: it would be nice if we had a way of ensuring
// everything in a profile was initialized regardless of how it was created
//XXX: should this also be taking a black_point?
/* similar to CGColorSpaceCreateCalibratedRGB */
qcms_profile* qcms_profile_create_rgb_with_gamma(
qcms_CIE_xyY white_point,
qcms_CIE_xyYTRIPLE primaries,
float gamma)
{
qcms_profile* profile = qcms_profile_create();
if (!profile)
return NO_MEM_PROFILE;
//XXX: should store the whitepoint
if (!set_rgb_colorants(profile, white_point, primaries)) {
qcms_profile_fini(profile);
return INVALID_PROFILE;
}
profile->redTRC = curve_from_gamma(gamma);
profile->blueTRC = curve_from_gamma(gamma);
profile->greenTRC = curve_from_gamma(gamma);
if (!profile->redTRC || !profile->blueTRC || !profile->greenTRC) {
qcms_profile_fini(profile);
return NO_MEM_PROFILE;
}
profile->class = DISPLAY_DEVICE_PROFILE;
profile->rendering_intent = QCMS_INTENT_PERCEPTUAL;
profile->color_space = RGB_SIGNATURE;
return profile;
}
qcms_profile* qcms_profile_create_rgb_with_table(
qcms_CIE_xyY white_point,
qcms_CIE_xyYTRIPLE primaries,
uint16_t *table, int num_entries)
{
qcms_profile* profile = qcms_profile_create();
if (!profile)
return NO_MEM_PROFILE;
//XXX: should store the whitepoint
if (!set_rgb_colorants(profile, white_point, primaries)) {
qcms_profile_fini(profile);
return INVALID_PROFILE;
}
profile->redTRC = curve_from_table(table, num_entries);
profile->blueTRC = curve_from_table(table, num_entries);
profile->greenTRC = curve_from_table(table, num_entries);
if (!profile->redTRC || !profile->blueTRC || !profile->greenTRC) {
qcms_profile_fini(profile);
return NO_MEM_PROFILE;
}
profile->class = DISPLAY_DEVICE_PROFILE;
profile->rendering_intent = QCMS_INTENT_PERCEPTUAL;
profile->color_space = RGB_SIGNATURE;
return profile;
}
/* from lcms: cmsWhitePointFromTemp */
/* tempK must be >= 4000. and <= 25000.
* similar to argyll: icx_DTEMP2XYZ() */
static qcms_CIE_xyY white_point_from_temp(int temp_K)
{
qcms_CIE_xyY white_point;
double x, y;
double T, T2, T3;
// double M1, M2;
// No optimization provided.
T = temp_K;
T2 = T*T; // Square
T3 = T2*T; // Cube
// For correlated color temperature (T) between 4000K and 7000K:
if (T >= 4000. && T <= 7000.) {
x = -4.6070*(1E9/T3) + 2.9678*(1E6/T2) + 0.09911*(1E3/T) + 0.244063;
} else {
// or for correlated color temperature (T) between 7000K and 25000K:
if (T > 7000.0 && T <= 25000.0) {
x = -2.0064*(1E9/T3) + 1.9018*(1E6/T2) + 0.24748*(1E3/T) + 0.237040;
} else {
assert(0 && "invalid temp");
}
}
// Obtain y(x)
y = -3.000*(x*x) + 2.870*x - 0.275;
// wave factors (not used, but here for futures extensions)
// M1 = (-1.3515 - 1.7703*x + 5.9114 *y)/(0.0241 + 0.2562*x - 0.7341*y);
// M2 = (0.0300 - 31.4424*x + 30.0717*y)/(0.0241 + 0.2562*x - 0.7341*y);
// Fill white_point struct
white_point.x = x;
white_point.y = y;
white_point.Y = 1.0;
return white_point;
}
qcms_profile* qcms_profile_sRGB(void)
{
qcms_profile *profile;
uint16_t *table;
qcms_CIE_xyYTRIPLE Rec709Primaries = {
{0.6400, 0.3300, 1.0},
{0.3000, 0.6000, 1.0},
{0.1500, 0.0600, 1.0}
};
qcms_CIE_xyY D65;
D65 = white_point_from_temp(6504);
table = build_sRGB_gamma_table(1024);
if (!table)
return NO_MEM_PROFILE;
profile = qcms_profile_create_rgb_with_table(D65, Rec709Primaries, table, 1024);
free(table);
return profile;
}
/* qcms_profile_from_memory does not hold a reference to the memory passed in */
qcms_profile* qcms_profile_from_memory(const void *mem, size_t size)
{
uint32_t length;
struct mem_source source;
struct mem_source *src = &source;
struct tag_index index;
qcms_profile *profile;
source.buf = mem;
source.size = size;
source.valid = true;
length = read_u32(src, 0);
if (length <= size) {
// shrink the area that we can read if appropriate
source.size = length;
} else {
return INVALID_PROFILE;
}
/* ensure that the profile size is sane so it's easier to reason about */
if (source.size <= 64 || source.size >= MAX_PROFILE_SIZE)
return INVALID_PROFILE;
profile = qcms_profile_create();
if (!profile)
return NO_MEM_PROFILE;
check_CMM_type_signature(src);
check_profile_version(src);
read_class_signature(profile, src);
read_rendering_intent(profile, src);
read_color_space(profile, src);
//TODO read rest of profile stuff
if (!src->valid)
goto invalid_profile;
index = read_tag_table(profile, src);
if (!src->valid || !index.tags)
goto invalid_tag_table;
if (profile->class == DISPLAY_DEVICE_PROFILE || profile->class == INPUT_DEVICE_PROFILE) {
if (profile->color_space == RGB_SIGNATURE) {
profile->redColorant = read_tag_XYZType(src, index, TAG_rXYZ);
profile->blueColorant = read_tag_XYZType(src, index, TAG_bXYZ);
profile->greenColorant = read_tag_XYZType(src, index, TAG_gXYZ);
if (!src->valid)
goto invalid_tag_table;
profile->redTRC = read_tag_curveType(src, index, TAG_rTRC);
profile->blueTRC = read_tag_curveType(src, index, TAG_bTRC);
profile->greenTRC = read_tag_curveType(src, index, TAG_gTRC);
if (!profile->redTRC || !profile->blueTRC || !profile->greenTRC)
goto invalid_tag_table;
} else if (profile->color_space == GRAY_SIGNATURE) {
profile->grayTRC = read_tag_curveType(src, index, TAG_kTRC);
if (!profile->grayTRC)
goto invalid_tag_table;
} else {
goto invalid_tag_table;
}
} else if (0 && profile->class == OUTPUT_DEVICE_PROFILE) {
profile->A2B0 = read_tag_lutType(src, index, TAG_A2B0);
} else {
goto invalid_tag_table;
}
if (!src->valid)
goto invalid_tag_table;
free(index.tags);
return profile;
invalid_tag_table:
free(index.tags);
invalid_profile:
qcms_profile_fini(profile);
return INVALID_PROFILE;
}
qcms_intent qcms_profile_get_rendering_intent(qcms_profile *profile)
{
return profile->rendering_intent;
}
icColorSpaceSignature
qcms_profile_get_color_space(qcms_profile *profile)
{
return profile->color_space;
}
void qcms_profile_release(qcms_profile *profile)
{
if (profile->output_table_r)
precache_release(profile->output_table_r);
if (profile->output_table_g)
precache_release(profile->output_table_g);
if (profile->output_table_b)
precache_release(profile->output_table_b);
qcms_profile_fini(profile);
}
#include <stdio.h>
qcms_profile* qcms_profile_from_file(FILE *file)
{
uint32_t length, remaining_length;
qcms_profile *profile;
size_t read_length;
be32 length_be;
void *data;
if (fread(&length_be, 1, sizeof(length_be), file) != sizeof(length_be))
return BAD_VALUE_PROFILE;
length = be32_to_cpu(length_be);
if (length > MAX_PROFILE_SIZE || length < sizeof(length_be))
return BAD_VALUE_PROFILE;
/* allocate room for the entire profile */
data = malloc(length);
if (!data)
return NO_MEM_PROFILE;
/* copy in length to the front so that the buffer will contain the entire profile */
*((be32*)data) = length_be;
remaining_length = length - sizeof(length_be);
/* read the rest profile */
read_length = fread((unsigned char*)data + sizeof(length_be), 1, remaining_length, file);
if (read_length != remaining_length) {
free(data);
return INVALID_PROFILE;
}
profile = qcms_profile_from_memory(data, length);
free(data);
return profile;
}
qcms_profile* qcms_profile_from_path(const char *path)
{
qcms_profile *profile = NULL;
FILE *file = fopen(path, "rb");
if (file) {
profile = qcms_profile_from_file(file);
fclose(file);
}
return profile;
}
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