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libpng
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Imported from libpng-0.99k.tar

This commit is contained in:
Glenn Randers-Pehrson 1998-03-07 14:33:00 -06:00
parent 983ec160b4
commit ea3bcd7087
17 changed files with 43 additions and 48 deletions
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5
CHANGES
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@ -262,3 +262,8 @@ version 0.99h [March 6, 1998, evening]
version 1.00 [March 7, 1998]
Changed several typedefs in pngrutil.c
Added makefile.wat (Pawel Mrochen), updated makefile.tc3 (Willem van Schaik)
replaced "while(1)" with "for(;;)"
added PNGARG() to prototypes in pngtest.c and removed some prototypes
updated some of the makefiles (Tom Lane)
changed some typedefs (s_start, etc.) in pngrutil.c
fixed dimensions of "short_months" array in pngwrite.c

1
TODO
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@ -1,5 +1,6 @@
TODO - list of things to do for libpng
fix problem with C++ and EXTERN "C"
add "grayscale->palette" transformation and "palette->grayscale" detection
improved dithering
multi-lingual error and warning message support

8
pngmem.c
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@ -19,11 +19,11 @@
/* The following "hides" PNG_MALLOC and PNG_FREE thus allowing the pngtest
application to put a wrapper on top of them. */
#ifdef PNGTEST_MEMORY_DEBUG
#define PNG_MALLOC png_debug_malloc
#define PNG_FREE png_debug_free
#define PNG_MALLOC png_debug_malloc
#define PNG_FREE png_debug_free
#else
#define PNG_MALLOC png_malloc
#define PNG_FREE png_free
#define PNG_MALLOC png_malloc
#define PNG_FREE png_free
#endif
/* Borland DOS special memory handler */

2
pngpread.c
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@ -591,7 +591,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
png_ptr->zstream.next_in = buffer;
png_ptr->zstream.avail_in = (uInt)buffer_length;
while(1)
for(;;)
{
ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
if (ret == Z_STREAM_END)

2
pngread.c
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@ -154,7 +154,7 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
}
}
while (1)
for(;;)
{
png_byte chunk_length[4];
png_uint_32 length;

4
pngrutil.c
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@ -2059,7 +2059,7 @@ png_read_finish_row(png_structp png_ptr)
png_ptr->zstream.next_out = (Byte *)&extra;
png_ptr->zstream.avail_out = (uInt)1;
do
for(;;)
{
if (!(png_ptr->zstream.avail_in))
{
@ -2102,7 +2102,7 @@ png_read_finish_row(png_structp png_ptr)
if (!(png_ptr->zstream.avail_out))
png_error(png_ptr, "Extra compressed data");
} while (1);
}
png_ptr->zstream.avail_out = 0;
}

40
pngtest.c
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@ -32,12 +32,12 @@
/* Makes pngtest verbose so we can find problems (needs to be before png.h) */
#ifndef PNG_DEBUG
#endif
#define PNG_DEBUG 0
#endif
#include "png.h"
int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname);
int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
#ifdef __TURBOC__
#include <mem.h>
@ -51,7 +51,7 @@ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname);
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;
@ -69,7 +69,7 @@ void read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
}
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;
@ -83,10 +83,9 @@ void write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
but merely count the black pixels) */
static png_uint_32 black_pixels;
void count_black_pixels(png_structp png_ptr, png_row_infop row_info,
png_bytep data);
void count_black_pixels(png_structp png_ptr, png_row_infop row_info,
png_bytep data)
png_bytep data)
{
png_bytep dp = data;
if(png_ptr == NULL)return;
@ -180,8 +179,6 @@ static int wrote_question = 0;
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);
static void
png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check;
@ -206,10 +203,8 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
#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);
static void
png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
static void png_default_read_data(png_structp png_ptr, png_bytep data,
png_size_t length)
{
int check;
png_byte *n_data;
@ -250,10 +245,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
#endif /* USE_FAR_KEYWORD */
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
static void
png_default_flush(png_structp png_ptr);
static void
png_default_flush(png_structp png_ptr)
static void png_default_flush(png_structp png_ptr)
{
FILE *io_ptr;
io_ptr = (FILE *)CVT_PTR((png_ptr->io_ptr));
@ -268,8 +260,6 @@ png_default_flush(png_structp png_ptr)
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);
static void
png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_uint_32 check;
@ -289,8 +279,6 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
#define NEAR_BUF_SIZE 1024
#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);
static void
png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
@ -808,7 +796,7 @@ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
return (1);
}
while (1)
for(;;)
{
png_size_t num_in, num_out;
@ -886,13 +874,13 @@ main(int argc, char *argv[])
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)
#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
#endif
#endif
/* I think the following can happen. */
#if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
#if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
#endif
#endif
if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
{

5
pngwrite.c
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@ -225,8 +225,9 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
png_charp
png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
{
const char *short_months[12] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
static const char *short_months[12][4] =
{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
if (png_ptr->time_buffer == NULL)
{

6
pngwutil.c
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@ -1383,10 +1383,10 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
* been specified by the application, and then writes the row out with the
* chosen filter.
*/
#define PNG_MAXSUM (png_uint_32)(~0x0UL >> 1)
#define PNG_MAXSUM (~((png_uint_32)0) >> 1)
#define PNG_HISHIFT 10
#define PNG_LOMASK (png_uint_32)0xffffL
#define PNG_HIMASK (png_uint_32)(~PNG_LOMASK >> PNG_HISHIFT)
#define PNG_LOMASK ((png_uint_32)0xffffL)
#define PNG_HIMASK ((png_uint_32)(~PNG_LOMASK >> PNG_HISHIFT))
void
png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
{

2
scripts/makefile.dec
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@ -29,7 +29,7 @@ libpng.a: $(OBJS)
$(RANLIB) $@
pngtest: pngtest.o libpng.a
$(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
test: pngtest
./pngtest

2
scripts/makefile.dj2
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@ -23,7 +23,7 @@ libpng.a: $(OBJS)
$(RANLIB) $@
pngtest: pngtest.o libpng.a
$(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
coff2exe pngtest
test: pngtest

4
scripts/makefile.knr
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@ -34,8 +34,8 @@ libpng.a: ansi2knr $(OBJS)
ar rc $@ $(OBJS)
$(RANLIB) $@
pngtest: pngtest.o libpng.a ansi2knr
cc -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
pngtest: pngtest.o libpng.a
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
test: pngtest
./pngtest

2
scripts/makefile.lnx
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@ -56,7 +56,7 @@ libpng.so.$(PNGMAJ): libpng.so.$(PNGVER)
ln -sf libpng.so.$(PNGVER) libpng.so.$(PNGMAJ)
libpng.so.$(PNGVER): $(OBJSDLL)
gcc -shared -Wl,-soname,libpng.so.$(PNGMAJ) -o libpng.so.$(PNGVER) \
$(CC) -shared -Wl,-soname,libpng.so.$(PNGMAJ) -o libpng.so.$(PNGVER) \
$(OBJSDLL)
pngtest: pngtest.o libpng.so

2
scripts/makefile.mip
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@ -24,7 +24,7 @@ libpng.a: $(OBJS)
$(RANLIB) $@
pngtest: pngtest.o libpng.a
cc -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
test: pngtest
./pngtest

2
scripts/makefile.sgi
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@ -30,7 +30,7 @@ libpng.a: $(OBJS)
$(RANLIB) $@
pngtest: pngtest.o libpng.a
$(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
test: pngtest
./pngtest

2
scripts/makefile.std
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@ -29,7 +29,7 @@ libpng.a: $(OBJS)
$(RANLIB) $@
pngtest: pngtest.o libpng.a
$(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
test: pngtest
./pngtest

2
scripts/makefile.sun
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@ -33,7 +33,7 @@ libpng.a: $(OBJS)
$(RANLIB) $@
pngtest: pngtest.o libpng.a
$(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
test: pngtest
./pngtest