/* pngtest.c - a simple test program to test libpng
*
- * libpng 1.0.1
- * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
- * Copyright (c) 1996, 1997 Andreas Dilger
- * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 15, 1998
+ * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Copyright (c) 1998-2010 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.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
*
* This program reads in a PNG image, writes it out again, and then
* compares the two files. If the files are identical, this shows that
* properly. It does not currently test all of the transforms, although
* it probably should.
*
- * The program will fail in certain legitimate cases:
+ * The program will report "FAIL" in certain legitimate cases:
* 1) when the compression level or filter selection method is changed.
- * 2) when the chunk size is smaller than 8K.
- * 3) unknown ancillary chunks exist in the input file.
+ * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192.
+ * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks
+ * exist in the input file.
* 4) others not listed here...
* In these cases, it is best to check with another tool such as "pngcheck"
- * to see what the differences between the two images are.
+ * to see what the differences between the two files are.
*
* If a filename is given on the command-line, then this file is used
* for the input, rather than the default "pngtest.png". This allows
- * testing a wide variety of files easily.
+ * testing a wide variety of files easily. You can also test a number
+ * of files at once by typing "pngtest -m file1.png file2.png ..."
*/
-#include <stdio.h>
-#include <stdlib.h>
+#include "png.h"
+#include "pngpriv.h"
+
+# include <stdio.h>
+# include <stdlib.h>
+# define FCLOSE(file) fclose(file)
+
+#ifndef PNG_STDIO_SUPPORTED
+ typedef FILE * png_FILE_p;
+#endif
/* Makes pngtest verbose so we can find problems (needs to be before png.h) */
#ifndef PNG_DEBUG
-#define PNG_DEBUG 0
+# define PNG_DEBUG 0
#endif
-#include "png.h"
+#if !PNG_DEBUG
+# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
+#endif
+
+/* Turn on CPU timing
+#define PNGTEST_TIMING
+*/
+
+#ifndef PNG_FLOATING_POINT_SUPPORTED
+#undef PNGTEST_TIMING
+#endif
+
+#ifdef PNGTEST_TIMING
+static float t_start, t_stop, t_decode, t_encode, t_misc;
+#include <time.h>
+#endif
+
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+#define PNG_tIME_STRING_LENGTH 29
+static int tIME_chunk_present = 0;
+static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
+#endif
+
+static int verbose = 0;
int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
#include <mem.h>
#endif
-/* defined so I can write to a file on gui/windowing platforms */
+/* Defined so I can write to a file on gui/windowing platforms */
/* #define STDERR stderr */
-#define STDERR stdout /* for DOS */
+#define STDERR stdout /* For DOS */
-/* example of using row callbacks to make a simple progress meter */
-static int status_pass=1;
-static int status_dots_requested=0;
-static int status_dots=1;
+/* In case a system header (e.g., on AIX) defined jmpbuf */
+#ifdef jmpbuf
+# undef jmpbuf
+#endif
+
+/* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
+#ifndef png_jmpbuf
+# define png_jmpbuf(png_ptr) png_ptr->jmpbuf
+#endif
+/* Example of using row callbacks to make a simple progress meter */
+static int status_pass = 1;
+static int status_dots_requested = 0;
+static int status_dots = 1;
+
+void
+read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
void
read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
{
- if(png_ptr == NULL || row_number > 0x3fffffffL) return;
- if(status_pass != pass)
- {
- fprintf(stdout,"\n Pass %d: ",pass);
- status_pass = pass;
- status_dots = 30;
- }
- status_dots--;
- if(status_dots == 0)
- {
- fprintf(stdout, "\n ");
- status_dots=30;
- }
- fprintf(stdout, "r");
+ if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
+ return;
+ if (status_pass != pass)
+ {
+ fprintf(stdout, "\n Pass %d: ", pass);
+ status_pass = pass;
+ status_dots = 31;
+ }
+ status_dots--;
+ if (status_dots == 0)
+ {
+ fprintf(stdout, "\n ");
+ status_dots=30;
+ }
+ fprintf(stdout, "r");
}
+void
+write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
void
write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
{
- if(png_ptr == NULL || row_number > 0x3fffffffL || pass > 7) return;
- fprintf(stdout, "w");
+ if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
+ return;
+ fprintf(stdout, "w");
}
-#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-/* example of using user transform callback (we don't transform anything,
- but merely count the black pixels) */
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+/* Example of using user transform callback (we don't transform anything,
+ * but merely examine the row filters. We set this to 256 rather than
+ * 5 in case illegal filter values are present.)
+ */
+static png_uint_32 filters_used[256];
+void
+count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
+void
+count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
+{
+ if (png_ptr != NULL && row_info != NULL)
+ ++filters_used[*(data - 1)];
+}
+#endif
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+/* Example of using user transform callback (we don't transform anything,
+ * but merely count the zero samples)
+ */
-static png_uint_32 black_pixels;
+static png_uint_32 zero_samples;
void
-count_black_pixels(png_structp png_ptr, png_row_infop row_info, png_bytep data)
+count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
+void
+count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
{
png_bytep dp = data;
- if(png_ptr == NULL)return;
+ if (png_ptr == NULL)return;
- /* contents of row_info:
+ /* Contents of row_info:
* png_uint_32 width width of row
* png_uint_32 rowbytes number of bytes in row
* png_byte color_type color type of pixels
* png_byte pixel_depth bits per pixel (depth*channels)
*/
- /* counts the number of black pixels (or zero pixels if color_type is 3 */
+ /* Counts the number of zero samples (or zero pixels if color_type is 3 */
- if(row_info->color_type == 0 || row_info->color_type == 3)
+ if (row_info->color_type == 0 || row_info->color_type == 3)
{
- int pos=0;
- png_uint_32 n;
- for (n=0; n<row_info->width; n++)
+ int pos = 0;
+ png_uint_32 n, nstop;
+ for (n = 0, nstop=row_info->width; n<nstop; n++)
{
- if(row_info->bit_depth == 1)
- if(((*dp << pos++ )& 0x80) == 0) black_pixels++;
- if(pos == 8)
+ if (row_info->bit_depth == 1)
+ {
+ if (((*dp << pos++ ) & 0x80) == 0)
+ zero_samples++;
+ if (pos == 8)
{
- pos=0;
+ pos = 0;
dp++;
}
- if(row_info->bit_depth == 2)
- if(((*dp << (pos+=2))& 0xc0) == 0) black_pixels++;
- if(pos == 8)
+ }
+ if (row_info->bit_depth == 2)
+ {
+ if (((*dp << (pos+=2)) & 0xc0) == 0)
+ zero_samples++;
+ if (pos == 8)
{
- pos=0;
+ pos = 0;
dp++;
}
- if(row_info->bit_depth == 4)
- if(((*dp << (pos+=4))& 0xf0) == 0) black_pixels++;
- if(pos == 8)
+ }
+ if (row_info->bit_depth == 4)
+ {
+ if (((*dp << (pos+=4)) & 0xf0) == 0)
+ zero_samples++;
+ if (pos == 8)
{
- pos=0;
+ pos = 0;
dp++;
}
- if(row_info->bit_depth == 8)
- if(*dp++ == 0) black_pixels++;
- if(row_info->bit_depth == 16)
+ }
+ if (row_info->bit_depth == 8)
+ if (*dp++ == 0)
+ zero_samples++;
+ if (row_info->bit_depth == 16)
{
- if((*dp | *(dp+1)) == 0) black_pixels++;
+ if ((*dp | *(dp+1)) == 0)
+ zero_samples++;
dp+=2;
}
}
}
- else /* other color types */
+ else /* Other color types */
{
- png_uint_32 n;
+ png_uint_32 n, nstop;
int channel;
int color_channels = row_info->channels;
- if(row_info->color_type > 3)color_channels--;
+ if (row_info->color_type > 3)color_channels--;
- for (n=0; n<row_info->width; n++)
+ for (n = 0, nstop=row_info->width; n<nstop; n++)
{
for (channel = 0; channel < color_channels; channel++)
{
- if(row_info->bit_depth == 8)
- if(*dp++ == 0) black_pixels++;
- if(row_info->bit_depth == 16)
+ if (row_info->bit_depth == 8)
+ if (*dp++ == 0)
+ zero_samples++;
+ if (row_info->bit_depth == 16)
{
- if((*dp | *(dp+1)) == 0) black_pixels++;
+ if ((*dp | *(dp+1)) == 0)
+ zero_samples++;
dp+=2;
}
}
- if(row_info->color_type > 3)
+ if (row_info->color_type > 3)
{
dp++;
- if(row_info->bit_depth == 16)dp++;
+ if (row_info->bit_depth == 16)
+ dp++;
}
}
}
}
#endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
-static int verbose = 0;
static int wrote_question = 0;
-#if defined(PNG_NO_STDIO)
+#ifndef PNG_STDIO_SUPPORTED
/* START of code to validate stdio-free compilation */
-/* These copies of the default read/write functions come from pngrio.c and */
-/* pngwio.c. They allow "don't include stdio" testing of the library. */
-/* This is the function which does the actual reading of data. If you are
- not reading from a standard C stream, you should create a replacement
- read_data function and use it at run time with png_set_read_fn(), rather
- than changing the library. */
+/* These copies of the default read/write functions come from pngrio.c and
+ * pngwio.c. They allow "don't include stdio" testing of the library.
+ * This is the function that does the actual reading of data. If you are
+ * not reading from a standard C stream, you should create a replacement
+ * read_data function and use it at run time with png_set_read_fn(), rather
+ * than changing the library.
+ */
+
#ifndef USE_FAR_KEYWORD
static void
-png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
+pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
- png_size_t check;
+ png_size_t check = 0;
+ png_voidp io_ptr;
/* fread() returns 0 on error, so it is OK to store this in a png_size_t
* instead of an int, which is what fread() actually returns.
*/
- check = (png_size_t)fread(data, (png_size_t)1, length,
- (FILE *)png_ptr->io_ptr);
+ io_ptr = png_get_io_ptr(png_ptr);
+ if (io_ptr != NULL)
+ {
+ check = fread(data, 1, length, (png_FILE_p)io_ptr);
+ }
if (check != length)
{
- png_error(png_ptr, "Read Error");
+ png_error(png_ptr, "Read Error!");
}
}
#else
-/* this is the model-independent version. Since the standard I/O library
+/* This is the model-independent version. Since the standard I/O library
can't handle far buffers in the medium and small models, we have to copy
the data.
*/
-
+
#define NEAR_BUF_SIZE 1024
#define MIN(a,b) (a <= b ? a : b)
-
+
static void
-png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
+pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
- int check;
+ png_size_t check;
png_byte *n_data;
- FILE *io_ptr;
+ png_FILE_p io_ptr;
/* Check if data really is near. If so, use usual code. */
n_data = (png_byte *)CVT_PTR_NOCHECK(data);
- io_ptr = (FILE *)CVT_PTR(png_ptr->io_ptr);
+ io_ptr = (png_FILE_p)CVT_PTR(png_get_io_ptr(png_ptr));
if ((png_bytep)n_data == data)
{
check = fread(n_data, 1, length, io_ptr);
do
{
read = MIN(NEAR_BUF_SIZE, remaining);
- err = fread(buf, (png_size_t)1, read, io_ptr);
- png_memcpy(data, buf, read); /* copy far buffer to near buffer */
- if(err != read)
+ err = fread(buf, 1, 1, io_ptr);
+ png_memcpy(data, buf, read); /* Copy far buffer to near buffer */
+ if (err != read)
break;
else
check += err;
while (remaining != 0);
}
if (check != length)
- {
png_error(png_ptr, "read Error");
- }
}
#endif /* USE_FAR_KEYWORD */
-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
static void
-png_default_flush(png_structp png_ptr)
+pngtest_flush(png_structp png_ptr)
{
- FILE *io_ptr;
- io_ptr = (FILE *)CVT_PTR((png_ptr->io_ptr));
- if (io_ptr != NULL)
- fflush(io_ptr);
+ /* Do nothing; fflush() is said to be just a waste of energy. */
+ png_ptr = png_ptr; /* Stifle compiler warning */
}
#endif
-/* This is the function which does the actual writing of data. If you are
- not writing to a standard C stream, you should create a replacement
- write_data function and use it at run time with png_set_write_fn(), rather
- than changing the library. */
+/* This is the function that does the actual writing of data. If you are
+ * not writing to a standard C stream, you should create a replacement
+ * write_data function and use it at run time with png_set_write_fn(), rather
+ * than changing the library.
+ */
#ifndef USE_FAR_KEYWORD
static void
-png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
- png_uint_32 check;
+ png_size_t check;
+ png_FILE_p io_ptr;
+ io_ptr = (png_FILE_p)CVT_PTR(png_get_io_ptr(png_ptr));
- check = fwrite(data, 1, length, (FILE *)(png_ptr->io_ptr));
+ check = fwrite(data, 1, length, io_ptr);
if (check != length)
{
png_error(png_ptr, "Write Error");
}
}
#else
-/* this is the model-independent version. Since the standard I/O library
+/* This is the model-independent version. Since the standard I/O library
can't handle far buffers in the medium and small models, we have to copy
the data.
*/
#define MIN(a,b) (a <= b ? a : b)
static void
-png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
- png_uint_32 check;
+ png_size_t check;
png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
- FILE *io_ptr;
+ png_FILE_p io_ptr;
/* Check if data really is near. If so, use usual code. */
near_data = (png_byte *)CVT_PTR_NOCHECK(data);
- io_ptr = (FILE *)CVT_PTR(png_ptr->io_ptr);
+ io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
if ((png_bytep)near_data == data)
{
check = fwrite(near_data, 1, length, io_ptr);
do
{
written = MIN(NEAR_BUF_SIZE, remaining);
- png_memcpy(buf, data, written); /* copy far buffer to near buffer */
+ png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
err = fwrite(buf, 1, written, io_ptr);
if (err != written)
break;
png_error(png_ptr, "Write Error");
}
}
-
#endif /* USE_FAR_KEYWORD */
/* This function is called when there is a warning, but the library thinks
* not used, but it is passed in case it may be useful.
*/
static void
-png_default_warning(png_structp png_ptr, png_const_charp message)
+pngtest_warning(png_structp png_ptr, png_const_charp message)
{
PNG_CONST char *name = "UNKNOWN (ERROR!)";
- if (png_ptr != NULL && png_ptr->error_ptr != NULL)
- name = png_ptr->error_ptr;
- fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
+ char *test;
+ test = png_get_error_ptr(png_ptr);
+ if (test == NULL)
+ fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
+ else
+ fprintf(STDERR, "%s: libpng warning: %s\n", test, message);
}
/* This is the default error handling function. Note that replacements for
* error function pointer in png_set_error_fn().
*/
static void
-png_default_error(png_structp png_ptr, png_const_charp message)
+pngtest_error(png_structp png_ptr, png_const_charp message)
{
- png_default_warning(png_ptr, message);
- /* We can return because png_error calls the default handler which is
- * actually ok in this case. */
+ pngtest_warning(png_ptr, message);
+ /* We can return because png_error calls the default handler, which is
+ * actually OK in this case.
+ */
}
-#endif /* PNG_NO_STDIO */
+#endif /* !PNG_STDIO_SUPPORTED */
/* END of code to validate stdio-free compilation */
/* START of code to validate memory allocation and deallocation */
-#ifdef PNGTEST_MEMORY_DEBUG
-/* Borland DOS special memory handler */
-#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
-ERROR - memory debugging is not supported on this platform
-#else
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
/* Allocate memory. For reasonable files, size should never exceed
- 64K. However, zlib may allocate more then 64K if you don't tell
- it not to. See zconf.h and png.h for more information. zlib does
- need to allocate exactly 64K, so whatever you call here must
- have the ability to do that.
-
- This piece of code can be compiled to validate max 64K allocations
- by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. */
-typedef struct memory_information {
- png_uint_32 size;
- png_voidp pointer;
+ * 64K. However, zlib may allocate more then 64K if you don't tell
+ * it not to. See zconf.h and png.h for more information. zlib does
+ * need to allocate exactly 64K, so whatever you call here must
+ * have the ability to do that.
+ *
+ * This piece of code can be compiled to validate max 64K allocations
+ * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
+ */
+typedef struct memory_information
+{
+ png_alloc_size_t size;
+ png_voidp pointer;
struct memory_information FAR *next;
} memory_information;
typedef memory_information FAR *memory_infop;
static memory_infop pinformation = NULL;
static int current_allocation = 0;
static int maximum_allocation = 0;
+static int total_allocation = 0;
+static int num_allocations = 0;
-extern PNG_EXPORT(png_voidp,png_debug_malloc) PNGARG((png_structp png_ptr,
- png_uint_32 size));
-extern PNG_EXPORT(void,png_debug_free) PNGARG((png_structp png_ptr,
- png_voidp ptr));
+png_voidp png_debug_malloc
+ PNGARG((png_structp png_ptr, png_alloc_size_t size));
+void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
png_voidp
-png_malloc(png_structp png_ptr, png_uint_32 size) {
- if (png_ptr == NULL) {
- fprintf(STDERR, "NULL pointer to memory allocator\n");
- return (NULL);
- }
+png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
+{
+
+ /* png_malloc has already tested for NULL; png_create_struct calls
+ * png_debug_malloc directly, with png_ptr == NULL which is OK
+ */
+
if (size == 0)
- return (png_voidp)(NULL);
+ return (NULL);
/* This calls the library allocator twice, once to get the requested
buffer and once to get a new free list entry. */
{
- memory_infop pinfo = png_debug_malloc(png_ptr, sizeof *pinfo);
+ /* Disable malloc_fn and free_fn */
+ memory_infop pinfo;
+ png_set_mem_fn(png_ptr, NULL, NULL, NULL);
+ pinfo = (memory_infop)png_malloc(png_ptr,
+ png_sizeof(*pinfo));
pinfo->size = size;
current_allocation += size;
+ total_allocation += size;
+ num_allocations ++;
if (current_allocation > maximum_allocation)
maximum_allocation = current_allocation;
- pinfo->pointer = png_debug_malloc(png_ptr, size);
+ pinfo->pointer = png_malloc(png_ptr, size);
+ /* Restore malloc_fn and free_fn */
+ png_set_mem_fn(png_ptr,
+ NULL, png_debug_malloc, png_debug_free);
+ if (size != 0 && pinfo->pointer == NULL)
+ {
+ current_allocation -= size;
+ total_allocation -= size;
+ png_error(png_ptr,
+ "out of memory in pngtest->png_debug_malloc");
+ }
pinfo->next = pinformation;
pinformation = pinfo;
/* Make sure the caller isn't assuming zeroed memory. */
png_memset(pinfo->pointer, 0xdd, pinfo->size);
+ if (verbose)
+ printf("png_malloc %lu bytes at %x\n", (unsigned long)size,
+ pinfo->pointer);
return (png_voidp)(pinfo->pointer);
}
}
/* Free a pointer. It is removed from the list at the same time. */
void
-png_free(png_structp png_ptr, png_voidp ptr)
+png_debug_free(png_structp png_ptr, png_voidp ptr)
{
if (png_ptr == NULL)
- fprintf(STDERR, "NULL pointer to memory allocator\n");
- if (ptr == 0) {
+ fprintf(STDERR, "NULL pointer to png_debug_free.\n");
+ if (ptr == 0)
+ {
#if 0 /* This happens all the time. */
fprintf(STDERR, "WARNING: freeing NULL pointer\n");
#endif
/* Unlink the element from the list. */
{
memory_infop FAR *ppinfo = &pinformation;
- for (;;) {
+ for (;;)
+ {
memory_infop pinfo = *ppinfo;
- if (pinfo->pointer == ptr) {
+ if (pinfo->pointer == ptr)
+ {
*ppinfo = pinfo->next;
current_allocation -= pinfo->size;
if (current_allocation < 0)
fprintf(STDERR, "Duplicate free of memory\n");
/* We must free the list element too, but first kill
- the memory which is to be freed. */
- memset(ptr, 0x55, pinfo->size);
- png_debug_free(png_ptr, pinfo);
+ the memory that is to be freed. */
+ png_memset(ptr, 0x55, pinfo->size);
+ png_free_default(png_ptr, pinfo);
+ pinfo = NULL;
break;
}
- if (pinfo->next == NULL) {
- fprintf(STDERR, "Pointer %x not found\n", ptr);
+ if (pinfo->next == NULL)
+ {
+ fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
break;
}
ppinfo = &pinfo->next;
}
/* Finally free the data. */
- png_debug_free(png_ptr, ptr);
+ if (verbose)
+ printf("Freeing %x\n", ptr);
+ png_free_default(png_ptr, ptr);
+ ptr = NULL;
}
-#endif /* Not Borland DOS special memory handler */
-#endif
+#endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
/* END of code to test memory allocation/deallocation */
+
+/* Demonstration of user chunk support of the sTER and vpAg chunks */
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+
+/* (sTER is a public chunk not yet known by libpng. vpAg is a private
+chunk used in ImageMagick to store "virtual page" size). */
+
+static png_uint_32 user_chunk_data[4];
+
+ /* 0: sTER mode + 1
+ * 1: vpAg width
+ * 2: vpAg height
+ * 3: vpAg units
+ */
+
+static int read_user_chunk_callback(png_struct *png_ptr,
+ png_unknown_chunkp chunk)
+{
+ png_uint_32
+ *my_user_chunk_data;
+
+ /* Return one of the following:
+ * return (-n); chunk had an error
+ * return (0); did not recognize
+ * return (n); success
+ *
+ * The unknown chunk structure contains the chunk data:
+ * png_byte name[5];
+ * png_byte *data;
+ * png_size_t size;
+ *
+ * Note that libpng has already taken care of the CRC handling.
+ */
+
+ if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
+ chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
+ {
+ /* Found sTER chunk */
+ if (chunk->size != 1)
+ return (-1); /* Error return */
+ if (chunk->data[0] != 0 && chunk->data[0] != 1)
+ return (-1); /* Invalid mode */
+ my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
+ my_user_chunk_data[0]=chunk->data[0]+1;
+ return (1);
+ }
+
+ if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
+ chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
+ return (0); /* Did not recognize */
+
+ /* Found ImageMagick vpAg chunk */
+
+ if (chunk->size != 9)
+ return (-1); /* Error return */
+
+ my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
+
+ my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
+ my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
+ my_user_chunk_data[3]=(png_uint_32)chunk->data[8];
+
+ return (1);
+
+}
+#endif
+/* END of code to demonstrate user chunk support */
+
/* Test one file */
int
test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
- static FILE *fpin, *fpout; /* "static" prevents setjmp corruption */
- png_structp read_ptr, write_ptr;
- png_infop read_info_ptr, write_info_ptr, end_info_ptr;
+ static png_FILE_p fpin;
+ static png_FILE_p fpout; /* "static" prevents setjmp corruption */
+ png_structp read_ptr;
+ png_infop read_info_ptr, end_info_ptr;
+#ifdef PNG_WRITE_SUPPORTED
+ png_structp write_ptr;
+ png_infop write_info_ptr;
+ png_infop write_end_info_ptr;
+#else
+ png_structp write_ptr = NULL;
+ png_infop write_info_ptr = NULL;
+ png_infop write_end_info_ptr = NULL;
+#endif
png_bytep row_buf;
png_uint_32 y;
png_uint_32 width, height;
int num_pass, pass;
int bit_depth, color_type;
+#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
jmp_buf jmpbuf;
-#endif
-
+#endif
+#endif
+
char inbuf[256], outbuf[256];
- row_buf = (png_bytep)NULL;
+ row_buf = NULL;
if ((fpin = fopen(inname, "rb")) == NULL)
{
if ((fpout = fopen(outname, "wb")) == NULL)
{
fprintf(STDERR, "Could not open output file %s\n", outname);
- fclose(fpin);
+ FCLOSE(fpin);
return (1);
}
- png_debug(0, "Allocating read and write structures\n");
- read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL,
- (png_error_ptr)NULL, (png_error_ptr)NULL);
-#if defined(PNG_NO_STDIO)
- png_set_error_fn(read_ptr, (png_voidp)inname, png_default_error,
- png_default_warning);
+ png_debug(0, "Allocating read and write structures");
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ read_ptr =
+ png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
+ NULL, NULL, NULL,
+ (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
+#else
+ read_ptr =
+ png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+#endif
+#ifndef PNG_STDIO_SUPPORTED
+ png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
+ pngtest_warning);
+#endif
+
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+ user_chunk_data[0] = 0;
+ user_chunk_data[1] = 0;
+ user_chunk_data[2] = 0;
+ user_chunk_data[3] = 0;
+ png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
+ read_user_chunk_callback);
+
+#endif
+#ifdef PNG_WRITE_SUPPORTED
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ write_ptr =
+ png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
+ NULL, NULL, NULL, png_debug_malloc, png_debug_free);
+#else
+ write_ptr =
+ png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+#endif
+#ifndef PNG_STDIO_SUPPORTED
+ png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
+ pngtest_warning);
#endif
- write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL,
- (png_error_ptr)NULL, (png_error_ptr)NULL);
-#if defined(PNG_NO_STDIO)
- png_set_error_fn(write_ptr, (png_voidp)inname, png_default_error,
- png_default_warning);
#endif
- png_debug(0, "Allocating read_info, write_info and end_info structures\n");
+ png_debug(0, "Allocating read_info, write_info and end_info structures");
read_info_ptr = png_create_info_struct(read_ptr);
- write_info_ptr = png_create_info_struct(write_ptr);
end_info_ptr = png_create_info_struct(read_ptr);
+#ifdef PNG_WRITE_SUPPORTED
+ write_info_ptr = png_create_info_struct(write_ptr);
+ write_end_info_ptr = png_create_info_struct(write_ptr);
+#endif
- png_debug(0, "Setting jmpbuf for read struct\n");
+#ifdef PNG_SETJMP_SUPPORTED
+ png_debug(0, "Setting jmpbuf for read struct");
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
#else
- if (setjmp(read_ptr->jmpbuf))
+ if (setjmp(png_jmpbuf(read_ptr)))
#endif
{
fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
+ png_free(read_ptr, row_buf);
+ row_buf = NULL;
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
+#ifdef PNG_WRITE_SUPPORTED
+ png_destroy_info_struct(write_ptr, &write_end_info_ptr);
png_destroy_write_struct(&write_ptr, &write_info_ptr);
- fclose(fpin);
- fclose(fpout);
+#endif
+ FCLOSE(fpin);
+ FCLOSE(fpout);
return (1);
}
+#ifdef USE_FAR_KEYWORD
+ png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
+#endif
- png_debug(0, "Setting jmpbuf for write struct\n");
+#ifdef PNG_WRITE_SUPPORTED
+ png_debug(0, "Setting jmpbuf for write struct");
#ifdef USE_FAR_KEYWORD
- png_memcpy(read_ptr->jmpbuf,jmpbuf,sizeof(jmp_buf));
if (setjmp(jmpbuf))
#else
- if (setjmp(write_ptr->jmpbuf))
+ if (setjmp(png_jmpbuf(write_ptr)))
#endif
{
fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
+ png_destroy_info_struct(write_ptr, &write_end_info_ptr);
+#ifdef PNG_WRITE_SUPPORTED
png_destroy_write_struct(&write_ptr, &write_info_ptr);
- fclose(fpin);
- fclose(fpout);
+#endif
+ FCLOSE(fpin);
+ FCLOSE(fpout);
return (1);
}
-
#ifdef USE_FAR_KEYWORD
- png_memcpy(write_ptr->jmpbuf,jmpbuf,sizeof(jmp_buf));
+ png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
#endif
- png_debug(0, "Initializing input and output streams\n");
-#if !defined(PNG_NO_STDIO)
+#endif
+#endif
+
+ png_debug(0, "Initializing input and output streams");
+#ifdef PNG_STDIO_SUPPORTED
png_init_io(read_ptr, fpin);
+# ifdef PNG_WRITE_SUPPORTED
png_init_io(write_ptr, fpout);
+# endif
#else
- png_set_read_fn(read_ptr, (png_voidp)fpin, png_default_read_data);
- png_set_write_fn(write_ptr, (png_voidp)fpout, png_default_write_data,
-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
- png_default_flush);
-#else
+ png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
+# ifdef PNG_WRITE_SUPPORTED
+ png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
+# ifdef PNG_WRITE_FLUSH_SUPPORTED
+ pngtest_flush);
+# else
NULL);
+# endif
+# endif
#endif
-#endif
- if(status_dots_requested == 1)
+ if (status_dots_requested == 1)
{
+#ifdef PNG_WRITE_SUPPORTED
png_set_write_status_fn(write_ptr, write_row_callback);
+#endif
png_set_read_status_fn(read_ptr, read_row_callback);
}
else
{
+#ifdef PNG_WRITE_SUPPORTED
png_set_write_status_fn(write_ptr, NULL);
+#endif
png_set_read_status_fn(read_ptr, NULL);
}
-# if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
- black_pixels=0;
- png_set_write_user_transform_fn(write_ptr, count_black_pixels);
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ {
+ int i;
+ for (i = 0; i<256; i++)
+ filters_used[i] = 0;
+ png_set_read_user_transform_fn(read_ptr, count_filters);
+ }
+#endif
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ zero_samples = 0;
+ png_set_write_user_transform_fn(write_ptr, count_zero_samples);
+#endif
+
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+# ifndef PNG_HANDLE_CHUNK_ALWAYS
+# define PNG_HANDLE_CHUNK_ALWAYS 3
+# endif
+ png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
+ NULL, 0);
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+# ifndef PNG_HANDLE_CHUNK_IF_SAFE
+# define PNG_HANDLE_CHUNK_IF_SAFE 2
# endif
+ png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE,
+ NULL, 0);
+#endif
- png_debug(0, "Reading info struct\n");
+ png_debug(0, "Reading info struct");
png_read_info(read_ptr, read_info_ptr);
- png_debug(0, "Transferring info struct\n");
+ png_debug(0, "Transferring info struct");
{
int interlace_type, compression_type, filter_type;
&color_type, &interlace_type, &compression_type, &filter_type))
{
png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
-#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
color_type, interlace_type, compression_type, filter_type);
#else
color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
#endif
}
}
-#if defined(PNG_READ_bKGD_SUPPORTED) && defined(PNG_WRITE_bKGD_SUPPORTED)
+#ifdef PNG_FIXED_POINT_SUPPORTED
+#ifdef PNG_cHRM_SUPPORTED
{
- png_color_16p background;
-
- if (png_get_bKGD(read_ptr, read_info_ptr, &background))
+ png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
+ blue_y;
+ if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
+ &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y))
{
- png_set_bKGD(write_ptr, write_info_ptr, background);
+ png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
+ red_y, green_x, green_y, blue_x, blue_y);
}
}
#endif
-#if defined(PNG_READ_cHRM_SUPPORTED) && defined(PNG_WRITE_cHRM_SUPPORTED)
+#ifdef PNG_gAMA_SUPPORTED
{
- double white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
+ png_fixed_point gamma;
+ if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
+ png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
+ }
+#endif
+#else /* Use floating point versions */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+#ifdef PNG_cHRM_SUPPORTED
+ {
+ double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
+ blue_y;
if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
&red_y, &green_x, &green_y, &blue_x, &blue_y))
{
}
}
#endif
-#if defined(PNG_READ_gAMA_SUPPORTED) && defined(PNG_WRITE_gAMA_SUPPORTED)
+#ifdef PNG_gAMA_SUPPORTED
{
double gamma;
if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
- {
png_set_gAMA(write_ptr, write_info_ptr, gamma);
+ }
+#endif
+#endif /* Floating point */
+#endif /* Fixed point */
+#ifdef PNG_iCCP_SUPPORTED
+ {
+ png_charp name;
+ png_charp profile;
+ png_uint_32 proflen;
+ int compression_type;
+
+ if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
+ &profile, &proflen))
+ {
+ png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
+ profile, proflen);
}
}
#endif
-#if defined(PNG_READ_sRGB_SUPPORTED) && defined(PNG_WRITE_sRGB_SUPPORTED)
+#ifdef PNG_sRGB_SUPPORTED
{
int intent;
if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
- {
png_set_sRGB(write_ptr, write_info_ptr, intent);
+ }
+#endif
+ {
+ png_colorp palette;
+ int num_palette;
+
+ if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
+ png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
+ }
+#ifdef PNG_bKGD_SUPPORTED
+ {
+ png_color_16p background;
+
+ if (png_get_bKGD(read_ptr, read_info_ptr, &background))
+ {
+ png_set_bKGD(write_ptr, write_info_ptr, background);
}
}
#endif
-#if defined(PNG_READ_hIST_SUPPORTED) && defined(PNG_WRITE_hIST_SUPPORTED)
+#ifdef PNG_hIST_SUPPORTED
{
png_uint_16p hist;
if (png_get_hIST(read_ptr, read_info_ptr, &hist))
- {
png_set_hIST(write_ptr, write_info_ptr, hist);
- }
}
#endif
-#if defined(PNG_READ_oFFs_SUPPORTED) && defined(PNG_WRITE_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
{
- png_uint_32 offset_x, offset_y;
+ png_int_32 offset_x, offset_y;
int unit_type;
- if (png_get_oFFs(read_ptr, read_info_ptr,&offset_x,&offset_y,&unit_type))
+ if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
+ &unit_type))
{
png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
}
}
#endif
-#if defined(PNG_READ_pCAL_SUPPORTED) && defined(PNG_WRITE_pCAL_SUPPORTED)
+#ifdef PNG_pCAL_SUPPORTED
{
png_charp purpose, units;
png_charpp params;
}
}
#endif
-#if defined(PNG_READ_pHYs_SUPPORTED) && defined(PNG_WRITE_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
{
png_uint_32 res_x, res_y;
int unit_type;
if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
- {
png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
- }
}
#endif
+#ifdef PNG_sBIT_SUPPORTED
{
- png_colorp palette;
- int num_palette;
+ png_color_8p sig_bit;
- if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
+ if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
+ png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
+ }
+#endif
+#ifdef PNG_sCAL_SUPPORTED
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+ {
+ int unit;
+ double scal_width, scal_height;
+
+ if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
+ &scal_height))
{
- png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
+ png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
}
}
-#if defined(PNG_READ_sBIT_SUPPORTED) && defined(PNG_WRITE_sBIT_SUPPORTED)
+#else
+#ifdef PNG_FIXED_POINT_SUPPORTED
{
- png_color_8p sig_bit;
+ int unit;
+ png_charp scal_width, scal_height;
- if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
+ if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
+ &scal_height))
{
- png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
+ png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
+ scal_height);
}
}
#endif
-#if (defined(PNG_READ_tEXt_SUPPORTED) && defined(PNG_WRITE_tEXt_SUPPORTED)) || \
- (defined(PNG_READ_zTXt_SUPPORTED) && defined(PNG_WRITE_zTXt_SUPPORTED))
+#endif
+#endif
+#ifdef PNG_TEXT_SUPPORTED
{
png_textp text_ptr;
int num_text;
if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
{
- png_debug1(0, "Handling %d tEXt/zTXt chunks\n", num_text);
+ png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
}
}
#endif
-#if defined(PNG_READ_tIME_SUPPORTED) && defined(PNG_WRITE_tIME_SUPPORTED)
+#ifdef PNG_tIME_SUPPORTED
{
png_timep mod_time;
if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
{
png_set_tIME(write_ptr, write_info_ptr, mod_time);
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ /* We have to use png_memcpy instead of "=" because the string
+ * pointed to by png_convert_to_rfc1123() gets free'ed before
+ * we use it.
+ */
+ png_memcpy(tIME_string,
+ png_convert_to_rfc1123(read_ptr, mod_time),
+ png_sizeof(tIME_string));
+ tIME_string[png_sizeof(tIME_string) - 1] = '\0';
+ tIME_chunk_present++;
+#endif /* PNG_TIME_RFC1123_SUPPORTED */
}
}
#endif
-#if defined(PNG_READ_tRNS_SUPPORTED) && defined(PNG_WRITE_tRNS_SUPPORTED)
+#ifdef PNG_tRNS_SUPPORTED
{
- png_bytep trans;
+ png_bytep trans_alpha;
int num_trans;
- png_color_16p trans_values;
+ png_color_16p trans_color;
- if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
- &trans_values))
+ if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
+ &trans_color))
+ {
+ int sample_max = (1 << bit_depth);
+ /* libpng doesn't reject a tRNS chunk with out-of-range samples */
+ if (!((color_type == PNG_COLOR_TYPE_GRAY &&
+ (int)trans_color->gray > sample_max) ||
+ (color_type == PNG_COLOR_TYPE_RGB &&
+ ((int)trans_color->red > sample_max ||
+ (int)trans_color->green > sample_max ||
+ (int)trans_color->blue > sample_max))))
+ png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
+ trans_color);
+ }
+ }
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ {
+ png_unknown_chunkp unknowns;
+ int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
+ &unknowns);
+ if (num_unknowns)
{
- png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
- trans_values);
+ png_size_t i;
+ png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
+ num_unknowns);
+ /* Copy the locations from the read_info_ptr. The automatically
+ * generated locations in write_info_ptr are wrong because we
+ * haven't written anything yet.
+ */
+ for (i = 0; i < (png_size_t)num_unknowns; i++)
+ png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
+ unknowns[i].location);
}
}
#endif
- png_debug(0, "\nWriting info struct\n");
+#ifdef PNG_WRITE_SUPPORTED
+ png_debug(0, "Writing info struct");
+
+/* If we wanted, we could write info in two steps:
+ * png_write_info_before_PLTE(write_ptr, write_info_ptr);
+ */
png_write_info(write_ptr, write_info_ptr);
- png_debug(0, "\nAllocating row buffer \n");
- row_buf = (png_bytep)png_malloc(read_ptr,
- png_get_rowbytes(read_ptr, read_info_ptr));
- if (row_buf == NULL)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+ if (user_chunk_data[0] != 0)
{
- fprintf(STDERR, "No memory to allocate row buffer\n");
- png_destroy_read_struct(&read_ptr, &read_info_ptr, (png_infopp)NULL);
- png_destroy_write_struct(&write_ptr, &write_info_ptr);
- fclose(fpin);
- fclose(fpout);
- return (1);
+ png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
+
+ unsigned char
+ ster_chunk_data[1];
+
+ if (verbose)
+ fprintf(STDERR, "\n stereo mode = %lu\n",
+ (unsigned long)(user_chunk_data[0] - 1));
+ ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1);
+ png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1);
+ }
+ if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
+ {
+ png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
+
+ unsigned char
+ vpag_chunk_data[9];
+
+ if (verbose)
+ fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n",
+ (unsigned long)user_chunk_data[1],
+ (unsigned long)user_chunk_data[2],
+ (unsigned long)user_chunk_data[3]);
+ png_save_uint_32(vpag_chunk_data, user_chunk_data[1]);
+ png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]);
+ vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff);
+ png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
}
- png_debug(0, "Writing row data\n");
+#endif
+#endif
+
+#ifdef SINGLE_ROWBUF_ALLOC
+ png_debug(0, "Allocating row buffer...");
+ row_buf = (png_bytep)png_malloc(read_ptr,
+ png_get_rowbytes(read_ptr, read_info_ptr));
+ png_debug1(0, "0x%08lx", (unsigned long)row_buf);
+#endif /* SINGLE_ROWBUF_ALLOC */
+ png_debug(0, "Writing row data");
+
+#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
+ defined(PNG_WRITE_INTERLACING_SUPPORTED)
num_pass = png_set_interlace_handling(read_ptr);
+# ifdef PNG_WRITE_SUPPORTED
png_set_interlace_handling(write_ptr);
+# endif
+#else
+ num_pass = 1;
+#endif
+#ifdef PNGTEST_TIMING
+ t_stop = (float)clock();
+ t_misc += (t_stop - t_start);
+ t_start = t_stop;
+#endif
for (pass = 0; pass < num_pass; pass++)
{
- png_debug1(0, "Writing row data for pass %d\n",pass);
+ png_debug1(0, "Writing row data for pass %d", pass);
for (y = 0; y < height; y++)
{
- png_read_rows(read_ptr, (png_bytepp)&row_buf, (png_bytepp)NULL, 1);
+#ifndef SINGLE_ROWBUF_ALLOC
+ png_debug2(0, "Allocating row buffer (pass %d, y = %ld)...", pass, y);
+ row_buf = (png_bytep)png_malloc(read_ptr,
+ png_get_rowbytes(read_ptr, read_info_ptr));
+ png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf,
+ png_get_rowbytes(read_ptr, read_info_ptr));
+#endif /* !SINGLE_ROWBUF_ALLOC */
+ png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
+
+#ifdef PNG_WRITE_SUPPORTED
+#ifdef PNGTEST_TIMING
+ t_stop = (float)clock();
+ t_decode += (t_stop - t_start);
+ t_start = t_stop;
+#endif
png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
+#ifdef PNGTEST_TIMING
+ t_stop = (float)clock();
+ t_encode += (t_stop - t_start);
+ t_start = t_stop;
+#endif
+#endif /* PNG_WRITE_SUPPORTED */
+
+#ifndef SINGLE_ROWBUF_ALLOC
+ png_debug2(0, "Freeing row buffer (pass %d, y = %ld)", pass, y);
+ png_free(read_ptr, row_buf);
+ row_buf = NULL;
+#endif /* !SINGLE_ROWBUF_ALLOC */
}
}
- png_debug(0, "Reading and writing end_info data\n");
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+ png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
+#endif
+
+ png_debug(0, "Reading and writing end_info data");
+
png_read_end(read_ptr, end_info_ptr);
- png_write_end(write_ptr, end_info_ptr);
-
+#ifdef PNG_TEXT_SUPPORTED
+ {
+ png_textp text_ptr;
+ int num_text;
+
+ if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
+ {
+ png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
+ png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
+ }
+ }
+#endif
+#ifdef PNG_tIME_SUPPORTED
+ {
+ png_timep mod_time;
+
+ if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
+ {
+ png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ /* We have to use png_memcpy instead of "=" because the string
+ pointed to by png_convert_to_rfc1123() gets free'ed before
+ we use it */
+ png_memcpy(tIME_string,
+ png_convert_to_rfc1123(read_ptr, mod_time),
+ png_sizeof(tIME_string));
+ tIME_string[png_sizeof(tIME_string) - 1] = '\0';
+ tIME_chunk_present++;
+#endif /* PNG_TIME_RFC1123_SUPPORTED */
+ }
+ }
+#endif
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+ {
+ png_unknown_chunkp unknowns;
+ int num_unknowns;
+ num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr,
+ &unknowns);
+ if (num_unknowns)
+ {
+ png_size_t i;
+ png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
+ num_unknowns);
+ /* Copy the locations from the read_info_ptr. The automatically
+ * generated locations in write_end_info_ptr are wrong because we
+ * haven't written the end_info yet.
+ */
+ for (i = 0; i < (png_size_t)num_unknowns; i++)
+ png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
+ unknowns[i].location);
+ }
+ }
+#endif
+#ifdef PNG_WRITE_SUPPORTED
+ png_write_end(write_ptr, write_end_info_ptr);
+#endif
+
#ifdef PNG_EASY_ACCESS_SUPPORTED
- if(verbose)
+ if (verbose)
{
png_uint_32 iwidth, iheight;
iwidth = png_get_image_width(write_ptr, write_info_ptr);
iheight = png_get_image_height(write_ptr, write_info_ptr);
- fprintf(STDERR, "Image width = %lu, height = %lu\n",
- iwidth, iheight);
+ fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
+ (unsigned long)iwidth, (unsigned long)iheight);
}
#endif
- png_debug(0, "Destroying data structs\n");
+ png_debug(0, "Destroying data structs");
+#ifdef SINGLE_ROWBUF_ALLOC
+ png_debug(1, "destroying row_buf for read_ptr");
png_free(read_ptr, row_buf);
+ row_buf = NULL;
+#endif /* SINGLE_ROWBUF_ALLOC */
+ png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr");
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
+#ifdef PNG_WRITE_SUPPORTED
+ png_debug(1, "destroying write_end_info_ptr");
+ png_destroy_info_struct(write_ptr, &write_end_info_ptr);
+ png_debug(1, "destroying write_ptr, write_info_ptr");
png_destroy_write_struct(&write_ptr, &write_info_ptr);
+#endif
+ png_debug(0, "Destruction complete.");
- fclose(fpin);
- fclose(fpout);
+ FCLOSE(fpin);
+ FCLOSE(fpout);
- png_debug(0, "Opening files for comparison\n");
+ png_debug(0, "Opening files for comparison");
if ((fpin = fopen(inname, "rb")) == NULL)
{
fprintf(STDERR, "Could not find file %s\n", inname);
if ((fpout = fopen(outname, "rb")) == NULL)
{
fprintf(STDERR, "Could not find file %s\n", outname);
- fclose(fpin);
+ FCLOSE(fpin);
return (1);
}
- for(;;)
+ for (;;)
{
png_size_t num_in, num_out;
- num_in = fread(inbuf, 1, 1, fpin);
- num_out = fread(outbuf, 1, 1, fpout);
+ num_in = fread(inbuf, 1, 1, fpin);
+ num_out = fread(outbuf, 1, 1, fpout);
if (num_in != num_out)
{
- fprintf(STDERR, "Files %s and %s are of a different size\n",
+ fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
inname, outname);
- if(wrote_question == 0)
+ if (wrote_question == 0)
{
fprintf(STDERR,
- " Was %s written with the same chunk size (8k),",inname);
+ " Was %s written with the same maximum IDAT chunk size (%d bytes),",
+ inname, PNG_ZBUF_SIZE);
fprintf(STDERR,
- " filtering\n heuristic (libpng default), compression");
+ "\n filtering heuristic (libpng default), compression");
fprintf(STDERR,
- " level (zlib default)\n and zlib version (%s)?\n\n",
+ " level (zlib default),\n and zlib version (%s)?\n\n",
ZLIB_VERSION);
- wrote_question=1;
+ wrote_question = 1;
}
- fclose(fpin);
- fclose(fpout);
+ FCLOSE(fpin);
+ FCLOSE(fpout);
return (0);
}
if (png_memcmp(inbuf, outbuf, num_in))
{
- fprintf(STDERR, "Files %s and %s are different\n", inname, outname);
- if(wrote_question == 0)
+ fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
+ if (wrote_question == 0)
{
fprintf(STDERR,
- " Was %s written with the same chunk size (8k),",inname);
+ " Was %s written with the same maximum IDAT chunk size (%d bytes),",
+ inname, PNG_ZBUF_SIZE);
fprintf(STDERR,
- " filtering\n heuristic (libpng default), compression");
+ "\n filtering heuristic (libpng default), compression");
fprintf(STDERR,
- " level (zlib default)\n and zlib version (%s)?\n\n",
+ " level (zlib default),\n and zlib version (%s)?\n\n",
ZLIB_VERSION);
- wrote_question=1;
+ wrote_question = 1;
}
- fclose(fpin);
- fclose(fpout);
+ FCLOSE(fpin);
+ FCLOSE(fpout);
return (0);
}
}
- fclose(fpin);
- fclose(fpout);
+ FCLOSE(fpin);
+ FCLOSE(fpout);
return (0);
}
-/* input and output filenames */
+/* Input and output filenames */
#ifdef RISCOS
-PNG_CONST char *inname = "pngtest/png";
-PNG_CONST char *outname = "pngout/png";
+static PNG_CONST char *inname = "pngtest/png";
+static PNG_CONST char *outname = "pngout/png";
#else
static PNG_CONST char *inname = "pngtest.png";
static PNG_CONST char *outname = "pngout.png";
int multiple = 0;
int ierror = 0;
- fprintf(STDERR, "Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
+ fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
+ fprintf(STDERR, "%s", png_get_copyright(NULL));
+ /* Show the version of libpng used in building the library */
+ fprintf(STDERR, " library (%lu):%s",
+ (unsigned long)png_access_version_number(),
+ png_get_header_version(NULL));
+ /* Show the version of libpng used in building the application */
+ fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
+ PNG_HEADER_VERSION_STRING);
+ fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
+ (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
/* Do some consistency checking on the memory allocation settings, I'm
- not sure this matters, but it is nice to know, the first of these
- tests should be impossible because of the way the macros are set
- in pngconf.h */
+ * not sure this matters, but it is nice to know, the first of these
+ * tests should be impossible because of the way the macros are set
+ * in pngconf.h
+ */
#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
#endif
}
}
- if (!multiple && argc == 3+verbose)
- outname = argv[2+verbose];
+ if (!multiple && argc == 3 + verbose)
+ outname = argv[2 + verbose];
- if ((!multiple && argc > 3+verbose) || (multiple && argc < 2))
+ if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
{
fprintf(STDERR,
"usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
if (multiple)
{
int i;
-#ifdef PNGTEST_MEMORY_DEBUG
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
int allocation_now = current_allocation;
#endif
for (i=2; i<argc; ++i)
{
int kerror;
- fprintf(STDERR, "Testing %s:",argv[i]);
+ fprintf(STDERR, "\n Testing %s:", argv[i]);
kerror = test_one_file(argv[i], outname);
- if (kerror == 0)
-#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
- fprintf(STDERR, " PASS (%lu black pixels)\n",black_pixels);
+ if (kerror == 0)
+ {
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ int k;
+#endif
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ fprintf(STDERR, "\n PASS (%lu zero samples)\n",
+ (unsigned long)zero_samples);
#else
fprintf(STDERR, " PASS\n");
#endif
- else {
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ for (k = 0; k<256; k++)
+ if (filters_used[k])
+ fprintf(STDERR, " Filter %d was used %lu times\n",
+ k, (unsigned long)filters_used[k]);
+#endif
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ if (tIME_chunk_present != 0)
+ fprintf(STDERR, " tIME = %s\n", tIME_string);
+ tIME_chunk_present = 0;
+#endif /* PNG_TIME_RFC1123_SUPPORTED */
+ }
+ else
+ {
fprintf(STDERR, " FAIL\n");
ierror += kerror;
- }
-#ifdef PNGTEST_MEMORY_DEBUG
+ }
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
if (allocation_now != current_allocation)
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
- current_allocation-allocation_now);
- if (current_allocation != 0) {
+ current_allocation - allocation_now);
+ if (current_allocation != 0)
+ {
memory_infop pinfo = pinformation;
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
current_allocation);
- while (pinfo != NULL) {
- fprintf(STDERR, " %d bytes at %x\n", pinfo->size, pinfo->pointer);
+ while (pinfo != NULL)
+ {
+ fprintf(STDERR, " %lu bytes at %x\n",
+ (unsigned long)pinfo->size,
+ (unsigned int) pinfo->pointer);
pinfo = pinfo->next;
- }
+ }
}
#endif
}
-#ifdef PNGTEST_MEMORY_DEBUG
- fprintf(STDERR, "Maximum memory allocation: %d bytes\n",
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ fprintf(STDERR, " Current memory allocation: %10d bytes\n",
+ current_allocation);
+ fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
maximum_allocation);
+ fprintf(STDERR, " Total memory allocation: %10d bytes\n",
+ total_allocation);
+ fprintf(STDERR, " Number of allocations: %10d\n",
+ num_allocations);
#endif
}
else
{
int i;
- for (i=0; i<3; ++i) {
+ for (i = 0; i<3; ++i)
+ {
int kerror;
-#ifdef PNGTEST_MEMORY_DEBUG
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
int allocation_now = current_allocation;
#endif
if (i == 1) status_dots_requested = 1;
- else if(verbose == 0)status_dots_requested = 0;
+ else if (verbose == 0)status_dots_requested = 0;
if (i == 0 || verbose == 1 || ierror != 0)
- fprintf(STDERR, "Testing %s:",inname);
+ fprintf(STDERR, "\n Testing %s:", inname);
kerror = test_one_file(inname, outname);
- if(kerror == 0)
+ if (kerror == 0)
{
- if(verbose == 1 || i == 2)
-#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
- fprintf(STDERR, " PASS (%lu black pixels)\n",black_pixels);
+ if (verbose == 1 || i == 2)
+ {
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ int k;
+#endif
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+ fprintf(STDERR, "\n PASS (%lu zero samples)\n",
+ (unsigned long)zero_samples);
#else
fprintf(STDERR, " PASS\n");
#endif
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+ for (k = 0; k<256; k++)
+ if (filters_used[k])
+ fprintf(STDERR, " Filter %d was used %lu times\n",
+ k, (unsigned long)filters_used[k]);
+#endif
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+ if (tIME_chunk_present != 0)
+ fprintf(STDERR, " tIME = %s\n", tIME_string);
+#endif /* PNG_TIME_RFC1123_SUPPORTED */
+ }
}
else
{
- if(verbose == 0 && i != 2)
- fprintf(STDERR, "Testing %s:",inname);
+ if (verbose == 0 && i != 2)
+ fprintf(STDERR, "\n Testing %s:", inname);
fprintf(STDERR, " FAIL\n");
ierror += kerror;
}
-#ifdef PNGTEST_MEMORY_DEBUG
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
if (allocation_now != current_allocation)
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
- current_allocation-allocation_now);
- if (current_allocation != 0) {
+ current_allocation - allocation_now);
+ if (current_allocation != 0)
+ {
memory_infop pinfo = pinformation;
-
+
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
current_allocation);
- while (pinfo != NULL) {
- fprintf(STDERR, " %d bytes at %x\n", pinfo->size, pinfo->pointer);
+ while (pinfo != NULL)
+ {
+ fprintf(STDERR, " %lu bytes at %x\n",
+ (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
pinfo = pinfo->next;
}
}
#endif
}
-#ifdef PNGTEST_MEMORY_DEBUG
- fprintf(STDERR, "Maximum memory allocation: %d bytes\n",
+#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
+ fprintf(STDERR, " Current memory allocation: %10d bytes\n",
+ current_allocation);
+ fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
maximum_allocation);
+ fprintf(STDERR, " Total memory allocation: %10d bytes\n",
+ total_allocation);
+ fprintf(STDERR, " Number of allocations: %10d\n",
+ num_allocations);
#endif
}
+#ifdef PNGTEST_TIMING
+ t_stop = (float)clock();
+ t_misc += (t_stop - t_start);
+ t_start = t_stop;
+ fprintf(STDERR, " CPU time used = %.3f seconds",
+ (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
+ fprintf(STDERR, " (decoding %.3f,\n",
+ t_decode/(float)CLOCKS_PER_SEC);
+ fprintf(STDERR, " encoding %.3f ,",
+ t_encode/(float)CLOCKS_PER_SEC);
+ fprintf(STDERR, " other %.3f seconds)\n\n",
+ t_misc/(float)CLOCKS_PER_SEC);
+#endif
+
if (ierror == 0)
- fprintf(STDERR, "libpng passes test\n");
+ fprintf(STDERR, " libpng passes test\n");
else
- fprintf(STDERR, "libpng FAILS test\n");
+ fprintf(STDERR, " libpng FAILS test\n");
return (int)(ierror != 0);
}
+
+/* Generate a compiler error if there is an old png.h in the search path. */
+typedef version_1_4_4 your_png_h_is_not_version_1_4_4;
projects / wxWidgets.git / blobdiff