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No commits in common. "3aad46748a719d8b75ccc4bb024e6e39e1cc850c" and "f049e8aeff662a82eb09e4d18f9b69a3a5acf18e" have entirely different histories.
3aad46748a
...
f049e8aeff
8
Assignment9/.idea/.gitignore
vendored
8
Assignment9/.idea/.gitignore
vendored
@ -1,8 +0,0 @@
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|||||||
# Default ignored files
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||||||
/shelf/
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|
||||||
/workspace.xml
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|
||||||
# Editor-based HTTP Client requests
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|
||||||
/httpRequests/
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|
||||||
# Datasource local storage ignored files
|
|
||||||
/dataSources/
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|
||||||
/dataSources.local.xml
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|
||||||
@ -1,2 +0,0 @@
|
|||||||
<?xml version="1.0" encoding="UTF-8"?>
|
|
||||||
<module classpath="CMake" type="CPP_MODULE" version="4" />
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|
||||||
@ -1,8 +0,0 @@
|
|||||||
<?xml version="1.0" encoding="UTF-8"?>
|
|
||||||
<project version="4">
|
|
||||||
<component name="CMakeSharedSettings">
|
|
||||||
<configurations>
|
|
||||||
<configuration PROFILE_NAME="Debug" ENABLED="true" GENERATION_DIR="build" CONFIG_NAME="Debug" />
|
|
||||||
</configurations>
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|
||||||
</component>
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|
||||||
</project>
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||||||
@ -1,4 +0,0 @@
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|||||||
<?xml version="1.0" encoding="UTF-8"?>
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|
||||||
<project version="4">
|
|
||||||
<component name="CMakeWorkspace" PROJECT_DIR="$PROJECT_DIR$" />
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|
||||||
</project>
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|
||||||
@ -1,8 +0,0 @@
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|||||||
<?xml version="1.0" encoding="UTF-8"?>
|
|
||||||
<project version="4">
|
|
||||||
<component name="ProjectModuleManager">
|
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||||||
<modules>
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||||||
<module fileurl="file://$PROJECT_DIR$/.idea/Assignment9.iml" filepath="$PROJECT_DIR$/.idea/Assignment9.iml" />
|
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||||||
</modules>
|
|
||||||
</component>
|
|
||||||
</project>
|
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||||||
@ -1,7 +0,0 @@
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|||||||
<component name="ProjectRunConfigurationManager">
|
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||||||
<configuration default="false" name="Assignment9" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="Assignment9" TARGET_NAME="Assignment9" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="Assignment9" RUN_TARGET_NAME="Assignment9">
|
|
||||||
<method v="2">
|
|
||||||
<option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
|
|
||||||
</method>
|
|
||||||
</configuration>
|
|
||||||
</component>
|
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||||||
@ -1,7 +0,0 @@
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|||||||
<component name="ProjectRunConfigurationManager">
|
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||||||
<configuration default="false" name="Test1" type="CMakeRunConfiguration" factoryName="Application" PROGRAM_PARAMS="../tests/test1.png" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="Assignment9" TARGET_NAME="Assignment9" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="Assignment9" RUN_TARGET_NAME="Assignment9">
|
|
||||||
<method v="2">
|
|
||||||
<option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
|
|
||||||
</method>
|
|
||||||
</configuration>
|
|
||||||
</component>
|
|
||||||
@ -1,7 +0,0 @@
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|||||||
<component name="ProjectRunConfigurationManager">
|
|
||||||
<configuration default="false" name="Test2" type="CMakeRunConfiguration" factoryName="Application" PROGRAM_PARAMS="../tests/test2.png" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="Assignment9" TARGET_NAME="Assignment9" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="Assignment9" RUN_TARGET_NAME="Assignment9">
|
|
||||||
<method v="2">
|
|
||||||
<option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
|
|
||||||
</method>
|
|
||||||
</configuration>
|
|
||||||
</component>
|
|
||||||
@ -1,7 +0,0 @@
|
|||||||
<component name="ProjectRunConfigurationManager">
|
|
||||||
<configuration default="false" name="Test3" type="CMakeRunConfiguration" factoryName="Application" PROGRAM_PARAMS="../tests/test3.png" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="Assignment9" TARGET_NAME="Assignment9" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="Assignment9" RUN_TARGET_NAME="Assignment9">
|
|
||||||
<method v="2">
|
|
||||||
<option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
|
|
||||||
</method>
|
|
||||||
</configuration>
|
|
||||||
</component>
|
|
||||||
@ -1,7 +0,0 @@
|
|||||||
<component name="ProjectRunConfigurationManager">
|
|
||||||
<configuration default="false" name="Test4" type="CMakeRunConfiguration" factoryName="Application" PROGRAM_PARAMS="../tests/test4.png" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="Assignment9" TARGET_NAME="Assignment9" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="Assignment9" RUN_TARGET_NAME="Assignment9">
|
|
||||||
<method v="2">
|
|
||||||
<option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
|
|
||||||
</method>
|
|
||||||
</configuration>
|
|
||||||
</component>
|
|
||||||
@ -1,6 +0,0 @@
|
|||||||
<?xml version="1.0" encoding="UTF-8"?>
|
|
||||||
<project version="4">
|
|
||||||
<component name="VcsDirectoryMappings">
|
|
||||||
<mapping directory="$PROJECT_DIR$/.." vcs="Git" />
|
|
||||||
</component>
|
|
||||||
</project>
|
|
||||||
@ -1,6 +0,0 @@
|
|||||||
cmake_minimum_required(VERSION 3.20)
|
|
||||||
project(Assignment9 C)
|
|
||||||
set(CMAKE_C_STANDARD 99)
|
|
||||||
add_executable(Assignment9 src/main.c
|
|
||||||
src/png.c
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|
||||||
src/png.h)
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|
||||||
Binary file not shown.
@ -1,68 +0,0 @@
|
|||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
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|
||||||
#include <arpa/inet.h>
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|
||||||
// FILE format is: 'header', then 2023 skipped bytes, then the number of interest
|
|
||||||
#define OURINT 1426915328
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|
||||||
#define OFFSETTODATA 2023
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|
||||||
|
|
||||||
int writeToFile(){
|
|
||||||
|
|
||||||
FILE* fp = fopen("toReadLater.txt","w+");
|
|
||||||
char c = 'h';
|
|
||||||
fwrite(&c, sizeof(char), 1, fp);
|
|
||||||
c = 'e';
|
|
||||||
fwrite(&c, sizeof(char), 1, fp);
|
|
||||||
c = 'a';
|
|
||||||
fwrite(&c, sizeof(char), 1, fp);
|
|
||||||
c = 'd';
|
|
||||||
fwrite(&c, sizeof(char), 1, fp);
|
|
||||||
c = 'e';
|
|
||||||
fwrite(&c, sizeof(char), 1, fp);
|
|
||||||
c = 'r';
|
|
||||||
fwrite(&c, sizeof(char), 1, fp);
|
|
||||||
unsigned int buf = OFFSETTODATA;
|
|
||||||
fwrite(&buf, sizeof(int), 1, fp);
|
|
||||||
fseek(fp, OFFSETTODATA, SEEK_CUR);
|
|
||||||
|
|
||||||
buf = OURINT;
|
|
||||||
fwrite(&buf, sizeof(int), 1, fp);
|
|
||||||
fclose(fp);
|
|
||||||
}
|
|
||||||
|
|
||||||
int readFromFile(){
|
|
||||||
FILE *fp = fopen("toReadLater.txt", "r+");
|
|
||||||
fseek(fp, 6 , SEEK_SET);
|
|
||||||
int skip = 0;
|
|
||||||
fread(&skip, sizeof(int), 1, fp);
|
|
||||||
// NOTE, in HW, the size of the section is a value in
|
|
||||||
// Big-Endian format, it will actually need conversion
|
|
||||||
fseek(fp, skip, SEEK_CUR);
|
|
||||||
unsigned int qBe = 0;
|
|
||||||
unsigned int qLe = 0;
|
|
||||||
int i;
|
|
||||||
unsigned char *c = (char *)(&qBe);
|
|
||||||
unsigned char *d = (char *)(&qLe);
|
|
||||||
for (i = 0; i < 4; i++)
|
|
||||||
{
|
|
||||||
c[i] = getc(fp);
|
|
||||||
printf("Byte %i: %i %x\n",i, c[i], c[i]);
|
|
||||||
}
|
|
||||||
|
|
||||||
for (i = 0; i < 4; i++)
|
|
||||||
{
|
|
||||||
d[4-i-1] = c[i];
|
|
||||||
}
|
|
||||||
|
|
||||||
printf("Translated using swapping the bytes order: %i\n", qLe);
|
|
||||||
qLe = ntohl(qBe);
|
|
||||||
printf("Translated using ntohl: %i\n", qLe);
|
|
||||||
fclose(fp);
|
|
||||||
}
|
|
||||||
int main (int argc, char** argv){
|
|
||||||
unsigned int wantToRead;
|
|
||||||
writeToFile();
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|
||||||
printf("Sizeof (int) is:%li\n", sizeof(unsigned int));
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|
||||||
readFromFile();
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
Binary file not shown.
@ -1,39 +0,0 @@
|
|||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <limits.h>
|
|
||||||
#include <string.h>
|
|
||||||
#include <stdbool.h>
|
|
||||||
#include "png.h"
|
|
||||||
|
|
||||||
int main(int argc, char *argv[]) {
|
|
||||||
if (argc != 2) {
|
|
||||||
printf("Usage: %s <png file>\n", argv[0]);
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
if (strlen(argv[1]) > PATH_MAX) {
|
|
||||||
printf("Path too long\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
char *path = argv[1];
|
|
||||||
|
|
||||||
char* png_buffer = load_file(get_fd(path));
|
|
||||||
if (!is_png(png_buffer)) {
|
|
||||||
printf("It's not a PNG file\n");
|
|
||||||
exit(1);
|
|
||||||
} else {
|
|
||||||
printf("It's a PNG file\n");
|
|
||||||
}
|
|
||||||
png_chunk **chunks = get_png_chunks(png_buffer);
|
|
||||||
int size = get_number_of_chunks(chunks);
|
|
||||||
for (int i = 0; i < size; i++) {
|
|
||||||
// Check if header is IDAT or IEND
|
|
||||||
bool is_idat = memcmp(chunks[i]->type, "IDAT", 4) == 0;
|
|
||||||
bool is_iend = memcmp(chunks[i]->type, "IEND", 4) == 0;
|
|
||||||
if (is_idat || is_iend) {
|
|
||||||
printf("Found %s chunk\n", chunks[i]->type);
|
|
||||||
} else {
|
|
||||||
printf("Found unknown: %s\n", chunks[i]->type);
|
|
||||||
}
|
|
||||||
printf("Chunk size is:%d\n", chunks[i]->length);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
@ -1,146 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright Notice
|
|
||||||
* ----------------
|
|
||||||
* Copyright © 1998, 1999 by: Glenn Randers-Pehrson
|
|
||||||
* This specification is a modification of the PNG 1.0 specification. It is being
|
|
||||||
* provided by the copyright holder under the provisions of the 1996 MIT copyright and license:
|
|
||||||
* Copyright © 1996 by: Massachusetts Institute of Technology (MIT)
|
|
||||||
* This W3C specification is being provided by the copyright holders under
|
|
||||||
* the following license. By obtaining, using and/or copying this specification, you
|
|
||||||
* agree that you have read, understood, and will comply with the following terms
|
|
||||||
* and conditions:
|
|
||||||
* Permission to use, copy, and distribute this specification for any purpose
|
|
||||||
* and without fee or royalty is hereby granted, provided that the full text of
|
|
||||||
* this NOTICE appears on ALL copies of the specification or portions thereof,
|
|
||||||
* including modifications, that you make.
|
|
||||||
* THIS SPECIFICATION IS PROVIDED ”AS IS,” AND COPYRIGHT HOLD-ERS
|
|
||||||
* MAKE NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
|
|
||||||
* IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, COPYRIGHT
|
|
||||||
* HOLDERS MAKE NO REPRESENTATIONS OR WARRANTIES OF MER-CHANTABILITY
|
|
||||||
* OR FITNESS FOR ANY PARTICULAR PURPOSE OR
|
|
||||||
* THAT THE USE OF THE SPECIFICATION WILL NOT INFRINGE ANY
|
|
||||||
* THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER
|
|
||||||
* RIGHTS. COPYRIGHT HOLDERS WILL BEAR NO LIABILITY FOR ANY
|
|
||||||
* USE OF THIS SPECIFICATION.
|
|
||||||
* The name and trademarks of copyright holders may NOT be used in
|
|
||||||
* ad-vertising or publicity pertaining to the specification without specific, written
|
|
||||||
* prior permission. Title to copyright in this specification and any associated
|
|
||||||
* documentation will at all times remain with copyright holders.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <arpa/inet.h>
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <zlib.h>
|
|
||||||
#include <string.h>
|
|
||||||
#include "png.h"
|
|
||||||
|
|
||||||
int get_fd(char *path) {
|
|
||||||
FILE *fp = fopen(path, "rb");
|
|
||||||
if (fp == NULL) {
|
|
||||||
perror("fopen");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
int fd = fileno(fp);
|
|
||||||
if (fd == -1) {
|
|
||||||
perror("fileno");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
return fd;
|
|
||||||
}
|
|
||||||
|
|
||||||
FILE *get_fp(int fd) {
|
|
||||||
FILE *fp = fdopen(fd, "rb");
|
|
||||||
if (fp == NULL) {
|
|
||||||
perror("fdopen");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
return fp;
|
|
||||||
}
|
|
||||||
|
|
||||||
char *load_file(int fd) {
|
|
||||||
FILE *fp = get_fp(fd);
|
|
||||||
fseek(fp, 0, SEEK_END);
|
|
||||||
long size = ftell(fp);
|
|
||||||
rewind(fp);
|
|
||||||
char *buffer = malloc(size);
|
|
||||||
if (buffer == NULL) {
|
|
||||||
perror("malloc");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
fread(buffer, 1, size, fp);
|
|
||||||
// Iterate over buffer and convert from network byte order to host byte order
|
|
||||||
//for (int i = 0; i < size; i += 4) {
|
|
||||||
// uint32_t *ptr = (uint32_t *)(buffer + i);
|
|
||||||
// *ptr = ntohl(*ptr);
|
|
||||||
//}
|
|
||||||
fclose(fp);
|
|
||||||
return buffer;
|
|
||||||
}
|
|
||||||
|
|
||||||
int is_png(char *buffer) {
|
|
||||||
return memcmp(buffer, PNG_SIGNATURE, PNG_SIGNATURE_SIZE) == 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
png_chunk *get_png_chunk(char *buffer, int offset) {
|
|
||||||
png_chunk *chunk = malloc(sizeof(png_chunk));
|
|
||||||
if (chunk == NULL) {
|
|
||||||
perror("malloc");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
memcpy(&chunk->length, buffer + offset + 0, 4);
|
|
||||||
chunk->length = ntohl(chunk->length);
|
|
||||||
memcpy(&chunk->type, buffer + offset + 4, 4);
|
|
||||||
chunk->data = malloc(chunk->length);
|
|
||||||
if (chunk->data == NULL) {
|
|
||||||
perror("malloc");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
memcpy(chunk->data, buffer + offset + 8, chunk->length);
|
|
||||||
memcpy(&chunk->crc, buffer + offset + 8 + chunk->length, 4);
|
|
||||||
return chunk;
|
|
||||||
}
|
|
||||||
|
|
||||||
png_chunk **get_png_chunks(char *buffer) {
|
|
||||||
png_chunk **chunks = malloc(sizeof(png_chunk *));
|
|
||||||
if (chunks == NULL) {
|
|
||||||
perror("malloc");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
int offset = PNG_SIGNATURE_SIZE;
|
|
||||||
int i = 0;
|
|
||||||
while (1) {
|
|
||||||
chunks[i] = get_png_chunk(buffer, offset);
|
|
||||||
offset += chunks[i]->length;
|
|
||||||
if (memcmp(chunks[i]->type, "IEND", 4) == 0) {
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
i++;
|
|
||||||
chunks = realloc(chunks, sizeof(png_chunk *) * (i + 1));
|
|
||||||
if (chunks == NULL) {
|
|
||||||
perror("realloc");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return chunks;
|
|
||||||
}
|
|
||||||
|
|
||||||
int is_chunk_valid(png_chunk *chunk) {
|
|
||||||
uint32_t crc = htonl(chunk->crc);
|
|
||||||
//uint32_t calculated_crc = crc32(0, chunk->type, 4);
|
|
||||||
//calculated_crc = crc32(calculated_crc, chunk->data, chunk->length);
|
|
||||||
//return crc == calculated_crc;
|
|
||||||
return 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
int is_chunk_critical(png_chunk *chunk) {
|
|
||||||
return chunk->type[0] >= 'A' && chunk->type[0] <= 'Z';
|
|
||||||
}
|
|
||||||
|
|
||||||
int get_number_of_chunks(png_chunk **chunks) {
|
|
||||||
int i = 0;
|
|
||||||
while (chunks[i] != NULL) {
|
|
||||||
i++;
|
|
||||||
}
|
|
||||||
return i;
|
|
||||||
}
|
|
||||||
@ -1,74 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright Notice
|
|
||||||
* ----------------
|
|
||||||
* Copyright © 1998, 1999 by: Glenn Randers-Pehrson
|
|
||||||
* This specification is a modification of the PNG 1.0 specification. It is being
|
|
||||||
* provided by the copyright holder under the provisions of the 1996 MIT copyright and license:
|
|
||||||
* Copyright © 1996 by: Massachusetts Institute of Technology (MIT)
|
|
||||||
* This W3C specification is being provided by the copyright holders under
|
|
||||||
* the following license. By obtaining, using and/or copying this specification, you
|
|
||||||
* agree that you have read, understood, and will comply with the following terms
|
|
||||||
* and conditions:
|
|
||||||
* Permission to use, copy, and distribute this specification for any purpose
|
|
||||||
* and without fee or royalty is hereby granted, provided that the full text of
|
|
||||||
* this NOTICE appears on ALL copies of the specification or portions thereof,
|
|
||||||
* including modifications, that you make.
|
|
||||||
* THIS SPECIFICATION IS PROVIDED ”AS IS,” AND COPYRIGHT HOLD-ERS
|
|
||||||
* MAKE NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
|
|
||||||
* IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, COPYRIGHT
|
|
||||||
* HOLDERS MAKE NO REPRESENTATIONS OR WARRANTIES OF MER-CHANTABILITY
|
|
||||||
* OR FITNESS FOR ANY PARTICULAR PURPOSE OR
|
|
||||||
* THAT THE USE OF THE SPECIFICATION WILL NOT INFRINGE ANY
|
|
||||||
* THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER
|
|
||||||
* RIGHTS. COPYRIGHT HOLDERS WILL BEAR NO LIABILITY FOR ANY
|
|
||||||
* USE OF THIS SPECIFICATION.
|
|
||||||
* The name and trademarks of copyright holders may NOT be used in
|
|
||||||
* ad-vertising or publicity pertaining to the specification without specific, written
|
|
||||||
* prior permission. Title to copyright in this specification and any associated
|
|
||||||
* documentation will at all times remain with copyright holders.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
|
|
||||||
#include <arpa/inet.h>
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <zlib.h>
|
|
||||||
#include <string.h>
|
|
||||||
|
|
||||||
// http://www.libpng.org/pub/png/spec/1.2/PNG-Rationale.html#R.PNG-file-signature
|
|
||||||
#define PNG_SIGNATURE "\211PNG\r\n\032\n"
|
|
||||||
#define PNG_SIGNATURE_SIZE 8
|
|
||||||
typedef struct png_chunk {
|
|
||||||
uint32_t length;
|
|
||||||
char type[4];
|
|
||||||
char *data;
|
|
||||||
uint32_t crc;
|
|
||||||
} png_chunk;
|
|
||||||
|
|
||||||
// Get file descriptor from path
|
|
||||||
int get_fd(char *path);
|
|
||||||
|
|
||||||
// Get FILE* from file descriptor
|
|
||||||
FILE *get_fp(int fd);
|
|
||||||
|
|
||||||
// Store file in heap memory
|
|
||||||
char *load_file(int fd);
|
|
||||||
|
|
||||||
// Check if file is a PNG
|
|
||||||
int is_png(char *buffer);
|
|
||||||
|
|
||||||
// Get PNG chunk
|
|
||||||
png_chunk *get_png_chunk(char *buffer, int offset);
|
|
||||||
|
|
||||||
// Get all PNG chunks
|
|
||||||
png_chunk **get_png_chunks(char *buffer);
|
|
||||||
|
|
||||||
// Get number of chunks
|
|
||||||
int get_number_of_chunks(png_chunk **chunks);
|
|
||||||
|
|
||||||
// Check if chunk is critical
|
|
||||||
int is_chunk_critical(png_chunk *chunk);
|
|
||||||
|
|
||||||
// Is chunk valid?
|
|
||||||
int is_chunk_valid(png_chunk *chunk);
|
|
||||||
@ -1,13 +0,0 @@
|
|||||||
It's a PNG file
|
|
||||||
Found unknown: IHDR
|
|
||||||
Chunk size is:13
|
|
||||||
Found unknown: sRGB
|
|
||||||
Chunk size is:1
|
|
||||||
Found unknown: gAMA
|
|
||||||
Chunk size is:4
|
|
||||||
Found unknown: pHYs
|
|
||||||
Chunk size is:9
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:18944
|
|
||||||
Found IEND
|
|
||||||
Chunk size is:0
|
|
||||||
@ -1 +0,0 @@
|
|||||||
It's not a PNG file
|
|
||||||
@ -1,249 +0,0 @@
|
|||||||
It's a PNG file
|
|
||||||
Found unknown: IHDR
|
|
||||||
Chunk size is:13
|
|
||||||
Found unknown: sRGB
|
|
||||||
Chunk size is:1
|
|
||||||
Found unknown: gAMA
|
|
||||||
Chunk size is:4
|
|
||||||
Found unknown: pHYs
|
|
||||||
Chunk size is:9
|
|
||||||
Found unknown: tEXt
|
|
||||||
Chunk size is:15
|
|
||||||
Found unknown: tIME
|
|
||||||
Chunk size is:7
|
|
||||||
Found unknown: tEXt
|
|
||||||
Chunk size is:32
|
|
||||||
Found unknown: tEXt
|
|
||||||
Chunk size is:33
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65310
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:17176
|
|
||||||
Found IEND
|
|
||||||
Chunk size is:0
|
|
||||||
@ -1,317 +0,0 @@
|
|||||||
It's a PNG file
|
|
||||||
Found unknown: IHDR
|
|
||||||
Chunk size is:13
|
|
||||||
Found unknown: sRGB
|
|
||||||
Chunk size is:1
|
|
||||||
Found unknown: gAMA
|
|
||||||
Chunk size is:4
|
|
||||||
Found unknown: pHYs
|
|
||||||
Chunk size is:9
|
|
||||||
Found unknown: tEXt
|
|
||||||
Chunk size is:15
|
|
||||||
Found unknown: tIME
|
|
||||||
Chunk size is:7
|
|
||||||
Found unknown: tEXt
|
|
||||||
Chunk size is:32
|
|
||||||
Found unknown: tEXt
|
|
||||||
Chunk size is:33
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65310
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:65524
|
|
||||||
Found IDAT
|
|
||||||
Chunk size is:53390
|
|
||||||
Found IEND
|
|
||||||
Chunk size is:0
|
|
||||||
Binary file not shown.
|
Before Width: | Height: | Size: 19 KiB |
Binary file not shown.
Binary file not shown.
|
Before Width: | Height: | Size: 7.1 MiB |
Binary file not shown.
|
Before Width: | Height: | Size: 9.3 MiB |
Loading…
Reference in New Issue
Block a user