135 Externals/libpng/pngtest.c
View file
@@ -1,10 +1,10 @@

/* pngtest.c - a simple test program to test libpng
*
* Last changed in libpng 1.6.26 [October 20, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* 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
@@ -144,6 +144,7 @@ tIME_to_str(png_structp png_ptr, png_charp ts, png_const_timep t)
static int verbose = 0;
static int strict = 0;
static int relaxed = 0;
static int xfail = 0;
static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */
static int error_count = 0; /* count calls to png_error */
static int warning_count = 0; /* count calls to png_warning */
@@ -344,10 +345,10 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)

#ifdef PNG_IO_STATE_SUPPORTED
void
pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
pngtest_check_io_state(png_structp png_ptr, size_t data_length,
png_uint_32 io_op);
void
pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
pngtest_check_io_state(png_structp png_ptr, size_t data_length,
png_uint_32 io_op)
{
png_uint_32 io_state = png_get_io_state(png_ptr);
@@ -385,12 +386,12 @@ pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
#endif

static void PNGCBAPI
pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
pngtest_read_data(png_structp png_ptr, png_bytep data, size_t length)
{
png_size_t check = 0;
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
/* fread() returns 0 on error, so it is OK to store this in a size_t
* instead of an int, which is what fread() actually returns.
*/
io_ptr = png_get_io_ptr(png_ptr);
@@ -424,9 +425,9 @@ pngtest_flush(png_structp png_ptr)
* than changing the library.
*/
static void PNGCBAPI
pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
pngtest_write_data(png_structp png_ptr, png_bytep data, size_t length)
{
png_size_t check;
size_t check;

check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr));

@@ -448,13 +449,13 @@ pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
*/
typedef struct
{
PNG_CONST char *file_name;
const char *file_name;
} pngtest_error_parameters;

static void PNGCBAPI
pngtest_warning(png_structp png_ptr, png_const_charp message)
{
PNG_CONST char *name = "UNKNOWN (ERROR!)";
const char *name = "UNKNOWN (ERROR!)";
pngtest_error_parameters *test =
(pngtest_error_parameters*)png_get_error_ptr(png_ptr);

@@ -463,7 +464,7 @@ pngtest_warning(png_structp png_ptr, png_const_charp message)
if (test != NULL && test->file_name != NULL)
name = test->file_name;

fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
fprintf(STDERR, "\n%s: libpng warning: %s\n", name, message);
}

/* This is the default error handling function. Note that replacements for
@@ -704,7 +705,7 @@ read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk)
* The unknown chunk structure contains the chunk data:
* png_byte name[5];
* png_byte *data;
* png_size_t size;
* size_t size;
*
* Note that libpng has already taken care of the CRC handling.
*/
@@ -849,7 +850,7 @@ pngtest_check_text_support(png_structp png_ptr, png_textp text_ptr,

/* Test one file */
static int
test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
test_one_file(const char *inname, const char *outname)
{
static png_FILE_p fpin;
static png_FILE_p fpout; /* "static" prevents setjmp corruption */
@@ -936,8 +937,12 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
png_free(read_ptr, row_buf);
row_buf = NULL;
if (verbose != 0)
fprintf(STDERR, " destroy read structs\n");
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
#ifdef PNG_WRITE_SUPPORTED
if (verbose != 0)
fprintf(STDERR, " destroy write structs\n");
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
png_destroy_write_struct(&write_ptr, &write_info_ptr);
#endif
@@ -952,11 +957,15 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
if (setjmp(png_jmpbuf(write_ptr)))
{
fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
png_free(read_ptr, row_buf);
row_buf = NULL;
if (verbose != 0)
fprintf(STDERR, " destroying read structs\n");
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
if (verbose != 0)
fprintf(STDERR, " destroying write structs\n");
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
#ifdef PNG_WRITE_SUPPORTED
png_destroy_write_struct(&write_ptr, &write_info_ptr);
#endif
FCLOSE(fpin);
FCLOSE(fpout);
return (1);
@@ -1192,6 +1201,22 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#ifdef PNG_READ_eXIf_SUPPORTED
{
png_bytep exif=NULL;
png_uint_32 exif_length;

if (png_get_eXIf_1(read_ptr, read_info_ptr, &exif_length, &exif) != 0)
{
if (exif_length > 1)
fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1],
(unsigned long)exif_length);
# ifdef PNG_WRITE_eXIf_SUPPORTED
png_set_eXIf_1(write_ptr, write_info_ptr, exif_length, exif);
# endif
}
}
#endif
#ifdef PNG_hIST_SUPPORTED
{
png_uint_16p hist;
@@ -1302,10 +1327,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
int i;

printf("\n");
fprintf(STDERR,"\n");
for (i=0; i<num_text; i++)
{
printf(" Text compression[%d]=%d\n",
fprintf(STDERR," Text compression[%d]=%d\n",
i, text_ptr[i].compression);
}
}
@@ -1398,6 +1423,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)

write_chunks(write_ptr, before_IDAT); /* after PLTE */

png_write_info(write_ptr, write_end_info_ptr);

write_chunks(write_ptr, after_IDAT); /* after IDAT */

#ifdef PNG_COMPRESSION_COMPAT
/* Test the 'compatibility' setting here, if it is available. */
png_set_compression(write_ptr, PNG_COMPRESSION_COMPAT);
@@ -1409,7 +1438,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));

pngtest_debug1("\t0x%08lx", (unsigned long)row_buf);
pngtest_debug1("\t%p", row_buf);
#endif /* SINGLE_ROWBUF_ALLOC */
pngtest_debug("Writing row data");

@@ -1463,7 +1492,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));

pngtest_debug2("\t0x%08lx (%lu bytes)", (unsigned long)row_buf,
pngtest_debug2("\t%p (%lu bytes)", row_buf,
(unsigned long)png_get_rowbytes(read_ptr, read_info_ptr));

#endif /* !SINGLE_ROWBUF_ALLOC */
@@ -1518,10 +1547,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
int i;

printf("\n");
fprintf(STDERR,"\n");
for (i=0; i<num_text; i++)
{
printf(" Text compression[%d]=%d\n",
fprintf(STDERR," Text compression[%d]=%d\n",
i, text_ptr[i].compression);
}
}
@@ -1530,6 +1559,22 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#ifdef PNG_READ_eXIf_SUPPORTED
{
png_bytep exif=NULL;
png_uint_32 exif_length;

if (png_get_eXIf_1(read_ptr, end_info_ptr, &exif_length, &exif) != 0)
{
if (exif_length > 1)
fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1],
(unsigned long)exif_length);
# ifdef PNG_WRITE_eXIf_SUPPORTED
png_set_eXIf_1(write_ptr, write_end_info_ptr, exif_length, exif);
# endif
}
}
#endif
#ifdef PNG_tIME_SUPPORTED
{
png_timep mod_time;
@@ -1683,7 +1728,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
for (;;)
{
static int wrote_question = 0;
png_size_t num_in, num_out;
size_t num_in, num_out;
char inbuf[256], outbuf[256];

num_in = fread(inbuf, 1, sizeof inbuf, fpin);
@@ -1766,11 +1811,11 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)

/* Input and output filenames */
#ifdef RISCOS
static PNG_CONST char *inname = "pngtest/png";
static PNG_CONST char *outname = "pngout/png";
static const char *inname = "pngtest/png";
static const char *outname = "pngout/png";
#else
static PNG_CONST char *inname = "pngtest.png";
static PNG_CONST char *outname = "pngout.png";
static const char *inname = "pngtest.png";
static const char *outname = "pngout.png";
#endif

int
@@ -1845,6 +1890,7 @@ main(int argc, char *argv[])
inname = argv[2];
strict++;
relaxed = 0;
multiple=1;
}

else if (strcmp(argv[1], "--relaxed") == 0)
@@ -1854,6 +1900,17 @@ main(int argc, char *argv[])
inname = argv[2];
strict = 0;
relaxed++;
multiple=1;
}
else if (strcmp(argv[1], "--xfail") == 0)
{
status_dots_requested = 0;
verbose = 1;
inname = argv[2];
strict = 0;
xfail++;
relaxed++;
multiple=1;
}

else
@@ -1911,8 +1968,13 @@ main(int argc, char *argv[])

else
{
fprintf(STDERR, " FAIL\n");
ierror += kerror;
if (xfail)
fprintf(STDERR, " XFAIL\n");
else
{
fprintf(STDERR, " FAIL\n");
ierror += kerror;
}
}
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
if (allocation_now != current_allocation)
@@ -2000,8 +2062,13 @@ main(int argc, char *argv[])
#endif
}

fprintf(STDERR, " FAIL\n");
ierror += kerror;
if (xfail)
fprintf(STDERR, " XFAIL\n");
else
{
fprintf(STDERR, " FAIL\n");
ierror += kerror;
}
}
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
if (allocation_now != current_allocation)
@@ -2088,4 +2155,4 @@ main(void)
#endif

/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_29 Your_png_h_is_not_version_1_6_29;
typedef png_libpng_version_1_6_37 Your_png_h_is_not_version_1_6_37;
64 Externals/libpng/pngtrans.c
View file
@@ -1,10 +1,10 @@

/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* Last changed in libpng 1.6.26 [October 20, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* 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
@@ -269,8 +269,8 @@ png_do_invert(png_row_infop row_info, png_bytep row)
if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
png_bytep rp = row;
png_size_t i;
png_size_t istop = row_info->rowbytes;
size_t i;
size_t istop = row_info->rowbytes;

for (i = 0; i < istop; i++)
{
@@ -283,8 +283,8 @@ png_do_invert(png_row_infop row_info, png_bytep row)
row_info->bit_depth == 8)
{
png_bytep rp = row;
png_size_t i;
png_size_t istop = row_info->rowbytes;
size_t i;
size_t istop = row_info->rowbytes;

for (i = 0; i < istop; i += 2)
{
@@ -298,8 +298,8 @@ png_do_invert(png_row_infop row_info, png_bytep row)
row_info->bit_depth == 16)
{
png_bytep rp = row;
png_size_t i;
png_size_t istop = row_info->rowbytes;
size_t i;
size_t istop = row_info->rowbytes;

for (i = 0; i < istop; i += 4)
{
@@ -345,7 +345,7 @@ png_do_swap(png_row_infop row_info, png_bytep row)
#endif

#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
static PNG_CONST png_byte onebppswaptable[256] = {
static const png_byte onebppswaptable[256] = {
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
@@ -380,7 +380,7 @@ static PNG_CONST png_byte onebppswaptable[256] = {
0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
};

static PNG_CONST png_byte twobppswaptable[256] = {
static const png_byte twobppswaptable[256] = {
0x00, 0x40, 0x80, 0xC0, 0x10, 0x50, 0x90, 0xD0,
0x20, 0x60, 0xA0, 0xE0, 0x30, 0x70, 0xB0, 0xF0,
0x04, 0x44, 0x84, 0xC4, 0x14, 0x54, 0x94, 0xD4,
@@ -415,7 +415,7 @@ static PNG_CONST png_byte twobppswaptable[256] = {
0x2F, 0x6F, 0xAF, 0xEF, 0x3F, 0x7F, 0xBF, 0xFF
};

static PNG_CONST png_byte fourbppswaptable[256] = {
static const png_byte fourbppswaptable[256] = {
0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0,
0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71,
@@ -514,11 +514,15 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
if (at_start != 0) /* Skip initial filler */
++sp;
else /* Skip initial channel and, for sp, the filler */
sp += 2, ++dp;
{
sp += 2; ++dp;
}

/* For a 1 pixel wide image there is nothing to do */
while (sp < ep)
*dp++ = *sp, sp += 2;
{
*dp++ = *sp; sp += 2;
}

row_info->pixel_depth = 8;
}
@@ -528,10 +532,14 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
if (at_start != 0) /* Skip initial filler */
sp += 2;
else /* Skip initial channel and, for sp, the filler */
sp += 4, dp += 2;
{
sp += 4; dp += 2;
}

while (sp < ep)
*dp++ = *sp++, *dp++ = *sp, sp += 3;
{
*dp++ = *sp++; *dp++ = *sp; sp += 3;
}

row_info->pixel_depth = 16;
}
@@ -554,11 +562,15 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
if (at_start != 0) /* Skip initial filler */
++sp;
else /* Skip initial channels and, for sp, the filler */
sp += 4, dp += 3;
{
sp += 4; dp += 3;
}

/* Note that the loop adds 3 to dp and 4 to sp each time. */
while (sp < ep)
*dp++ = *sp++, *dp++ = *sp++, *dp++ = *sp, sp += 2;
{
*dp++ = *sp++; *dp++ = *sp++; *dp++ = *sp; sp += 2;
}

row_info->pixel_depth = 24;
}
@@ -568,14 +580,16 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
if (at_start != 0) /* Skip initial filler */
sp += 2;
else /* Skip initial channels and, for sp, the filler */
sp += 8, dp += 6;
{
sp += 8; dp += 6;
}

while (sp < ep)
{
/* Copy 6 bytes, skip 2 */
*dp++ = *sp++, *dp++ = *sp++;
*dp++ = *sp++, *dp++ = *sp++;
*dp++ = *sp++, *dp++ = *sp, sp += 3;
*dp++ = *sp++; *dp++ = *sp++;
*dp++ = *sp++; *dp++ = *sp++;
*dp++ = *sp++; *dp++ = *sp; sp += 3;
}

row_info->pixel_depth = 48;
@@ -595,7 +609,7 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
return; /* The filler channel has gone already */

/* Fix the rowbytes value. */
row_info->rowbytes = (unsigned int)(dp-row);
row_info->rowbytes = (size_t)(dp-row);
}
#endif

@@ -694,7 +708,7 @@ png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info)
* forms produced on either GCC or MSVC.
*/
int padding = PNG_PADBITS(row_info->pixel_depth, row_info->width);
png_bytep rp = png_ptr->row_buf + row_info->rowbytes;
png_bytep rp = png_ptr->row_buf + row_info->rowbytes - 1;

switch (row_info->bit_depth)
{
14 Externals/libpng/pngwio.c
View file
@@ -1,10 +1,10 @@

/* pngwio.c - functions for data output
*
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2014,2016 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.)
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2014,2016,2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* 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
@@ -30,7 +30,7 @@
*/

void /* PRIVATE */
png_write_data(png_structrp png_ptr, png_const_bytep data, png_size_t length)
png_write_data(png_structrp png_ptr, png_const_bytep data, size_t length)
{
/* NOTE: write_data_fn must not change the buffer! */
if (png_ptr->write_data_fn != NULL )
@@ -48,9 +48,9 @@ png_write_data(png_structrp png_ptr, png_const_bytep data, png_size_t length)
* than changing the library.
*/
void PNGCBAPI
png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
png_default_write_data(png_structp png_ptr, png_bytep data, size_t length)
{
png_size_t check;
size_t check;

if (png_ptr == NULL)
return;
60 Externals/libpng/pngwrite.c
View file
@@ -1,10 +1,10 @@

/* pngwrite.c - general routines to write a PNG file
*
* Last changed in libpng 1.6.26 [October 20, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* 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
@@ -237,6 +237,11 @@ png_write_info(png_structrp png_ptr, png_const_inforp info_ptr)
png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type);
#endif

#ifdef PNG_WRITE_eXIf_SUPPORTED
if ((info_ptr->valid & PNG_INFO_eXIf) != 0)
png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif);
#endif

#ifdef PNG_WRITE_hIST_SUPPORTED
if ((info_ptr->valid & PNG_INFO_hIST) != 0)
png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette);
@@ -432,6 +437,12 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)
}
}
#endif

#ifdef PNG_WRITE_eXIf_SUPPORTED
if ((info_ptr->valid & PNG_INFO_eXIf) != 0)
png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif);
#endif

#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
write_unknown_chunks(png_ptr, info_ptr, PNG_AFTER_IDAT);
#endif
@@ -458,7 +469,7 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)

#ifdef PNG_CONVERT_tIME_SUPPORTED
void PNGAPI
png_convert_from_struct_tm(png_timep ptime, PNG_CONST struct tm * ttime)
png_convert_from_struct_tm(png_timep ptime, const struct tm * ttime)
{
png_debug(1, "in png_convert_from_struct_tm");

@@ -1007,8 +1018,8 @@ png_set_filter(png_structrp png_ptr, int method, int filters)
case 5:
case 6:
case 7: png_app_error(png_ptr, "Unknown row filter for method 0");
/* FALL THROUGH */
#endif /* WRITE_FILTER */
/* FALLTHROUGH */
case PNG_FILTER_VALUE_NONE:
png_ptr->do_filter = PNG_FILTER_NONE; break;

@@ -1525,7 +1536,7 @@ png_write_image_16bit(png_voidp argument)
display->first_row);
png_uint_16p output_row = png_voidcast(png_uint_16p, display->local_row);
png_uint_16p row_end;
const unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ?
unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ?
3 : 1;
int aindex = 0;
png_uint_32 y = image->height;
@@ -1562,7 +1573,7 @@ png_write_image_16bit(png_voidp argument)

while (out_ptr < row_end)
{
const png_uint_16 alpha = in_ptr[aindex];
png_uint_16 alpha = in_ptr[aindex];
png_uint_32 reciprocal = 0;
int c;

@@ -1625,7 +1636,7 @@ png_write_image_16bit(png_voidp argument)
* calculation can be done to 15 bits of accuracy; however, the output needs to
* be scaled in the range 0..255*65535, so include that scaling here.
*/
# define UNP_RECIPROCAL(alpha) ((((0xffff*0xff)<<7)+(alpha>>1))/alpha)
# define UNP_RECIPROCAL(alpha) ((((0xffff*0xff)<<7)+((alpha)>>1))/(alpha))

static png_byte
png_unpremultiply(png_uint_32 component, png_uint_32 alpha,
@@ -1684,7 +1695,7 @@ png_write_image_8bit(png_voidp argument)
display->first_row);
png_bytep output_row = png_voidcast(png_bytep, display->local_row);
png_uint_32 y = image->height;
const unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ?
unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ?
3 : 1;

if ((image->format & PNG_FORMAT_FLAG_ALPHA) != 0)
@@ -1772,25 +1783,25 @@ png_write_image_8bit(png_voidp argument)
static void
png_image_set_PLTE(png_image_write_control *display)
{
const png_imagep image = display->image;
png_imagep image = display->image;
const void *cmap = display->colormap;
const int entries = image->colormap_entries > 256 ? 256 :
int entries = image->colormap_entries > 256 ? 256 :
(int)image->colormap_entries;

/* NOTE: the caller must check for cmap != NULL and entries != 0 */
const png_uint_32 format = image->format;
const unsigned int channels = PNG_IMAGE_SAMPLE_CHANNELS(format);
png_uint_32 format = image->format;
unsigned int channels = PNG_IMAGE_SAMPLE_CHANNELS(format);

# if defined(PNG_FORMAT_BGR_SUPPORTED) &&\
defined(PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED)
const int afirst = (format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
int afirst = (format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
(format & PNG_FORMAT_FLAG_ALPHA) != 0;
# else
# define afirst 0
# endif

# ifdef PNG_FORMAT_BGR_SUPPORTED
const int bgr = (format & PNG_FORMAT_FLAG_BGR) != 0 ? 2 : 0;
int bgr = (format & PNG_FORMAT_FLAG_BGR) != 0 ? 2 : 0;
# else
# define bgr 0
# endif
@@ -1875,7 +1886,7 @@ png_image_set_PLTE(png_image_write_control *display)
tRNS[i] = entry[afirst ? 0 : 3];
if (tRNS[i] < 255)
num_trans = i+1;
/* FALL THROUGH */
/* FALLTHROUGH */
case 3:
palette[i].blue = entry[afirst + (2 ^ bgr)];
palette[i].green = entry[afirst + 1];
@@ -1886,7 +1897,7 @@ png_image_set_PLTE(png_image_write_control *display)
tRNS[i] = entry[1 ^ afirst];
if (tRNS[i] < 255)
num_trans = i+1;
/* FALL THROUGH */
/* FALLTHROUGH */
case 1:
palette[i].blue = palette[i].red = palette[i].green =
entry[afirst];
@@ -1929,7 +1940,7 @@ png_image_write_main(png_voidp argument)
int colormap = (format & PNG_FORMAT_FLAG_COLORMAP);
int linear = !colormap && (format & PNG_FORMAT_FLAG_LINEAR); /* input */
int alpha = !colormap && (format & PNG_FORMAT_FLAG_ALPHA);
int write_16bit = linear && !colormap && (display->convert_to_8bit == 0);
int write_16bit = linear && (display->convert_to_8bit == 0);

# ifdef PNG_BENIGN_ERRORS_SUPPORTED
/* Make sure we error out on any bad situation */
@@ -1940,12 +1951,12 @@ png_image_write_main(png_voidp argument)
* and total image size to ensure that they are within the system limits.
*/
{
const unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format);
unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format);

if (image->width <= 0x7fffffffU/channels) /* no overflow */
{
png_uint_32 check;
const png_uint_32 png_row_stride = image->width * channels;
png_uint_32 png_row_stride = image->width * channels;

if (display->row_stride == 0)
display->row_stride = (png_int_32)/*SAFE*/png_row_stride;
@@ -2041,7 +2052,7 @@ png_image_write_main(png_voidp argument)
*/
if (write_16bit != 0)
{
PNG_CONST png_uint_16 le = 0x0001;
png_uint_16 le = 0x0001;

if ((*(png_const_bytep) & le) != 0)
png_set_swap(png_ptr);
@@ -2151,12 +2162,11 @@ png_image_write_main(png_voidp argument)


static void (PNGCBAPI
image_memory_write)(png_structp png_ptr, png_bytep/*const*/ data,
png_size_t size)
image_memory_write)(png_structp png_ptr, png_bytep/*const*/ data, size_t size)
{
png_image_write_control *display = png_voidcast(png_image_write_control*,
png_ptr->io_ptr/*backdoor: png_get_io_ptr(png_ptr)*/);
const png_alloc_size_t ob = display->output_bytes;
png_alloc_size_t ob = display->output_bytes;

/* Check for overflow; this should never happen: */
if (size <= ((png_alloc_size_t)-1) - ob)
19 Externals/libpng/pngwtran.c
View file
@@ -1,10 +1,10 @@

/* pngwtran.c - transforms the data in a row for PNG writers
*
* Last changed in libpng 1.6.26 [October 20, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* 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
@@ -212,9 +212,9 @@ png_do_shift(png_row_infop row_info, png_bytep row,
if (row_info->bit_depth < 8)
{
png_bytep bp = row;
png_size_t i;
size_t i;
unsigned int mask;
png_size_t row_bytes = row_info->rowbytes;
size_t row_bytes = row_info->rowbytes;

if (bit_depth->gray == 1 && row_info->bit_depth == 2)
mask = 0x55;
@@ -254,8 +254,7 @@ png_do_shift(png_row_infop row_info, png_bytep row,

for (i = 0; i < istop; i++, bp++)
{

const unsigned int c = i%channels;
unsigned int c = i%channels;
int j;
unsigned int v, out;

@@ -283,7 +282,7 @@ png_do_shift(png_row_infop row_info, png_bytep row,

for (bp = row, i = 0; i < istop; i++)
{
const unsigned int c = i%channels;
unsigned int c = i%channels;
int j;
unsigned int value, v;

@@ -514,7 +513,7 @@ png_do_write_transformations(png_structrp png_ptr, png_row_infop row_info)
(png_ptr, /* png_ptr */
row_info, /* row_info: */
/* png_uint_32 width; width of row */
/* png_size_t rowbytes; number of bytes in row */
/* size_t rowbytes; number of bytes in row */
/* png_byte color_type; color type of pixels */
/* png_byte bit_depth; bit depth of samples */
/* png_byte channels; number of channels (1-4) */
223 Externals/libpng/pngwutil.c
View file

Large diffs are not rendered by default.

768 Externals/libpng/powerpc/filter_vsx_intrinsics.c
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Large diffs are not rendered by default.

126 Externals/libpng/powerpc/powerpc_init.c
View file
@@ -0,0 +1,126 @@

/* powerpc_init.c - POWERPC optimised filter functions
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2017 Glenn Randers-Pehrson
* Written by Vadim Barkov, 2017.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
* and license in png.h
*/

/* Below, after checking __linux__, various non-C90 POSIX 1003.1 functions are
* called.
*/
#define _POSIX_SOURCE 1

#include <stdio.h>
#include "../pngpriv.h"

#ifdef PNG_READ_SUPPORTED

#if PNG_POWERPC_VSX_OPT > 0
#ifdef PNG_POWERPC_VSX_CHECK_SUPPORTED /* Do run-time checks */
/* WARNING: it is strongly recommended that you do not build libpng with
* run-time checks for CPU features if at all possible. In the case of the PowerPC
* VSX instructions there is no processor-specific way of detecting the
* presence of the required support, therefore run-time detection is extremely
* OS specific.
*
* You may set the macro PNG_POWERPC_VSX_FILE to the file name of file containing
* a fragment of C source code which defines the png_have_vsx function. There
* are a number of implementations in contrib/powerpc-vsx, but the only one that
* has partial support is contrib/powerpc-vsx/linux.c - a generic Linux
* implementation which reads /proc/cpufino.
*/
#ifndef PNG_POWERPC_VSX_FILE
# ifdef __linux__
# define PNG_POWERPC_VSX_FILE "contrib/powerpc-vsx/linux_aux.c"
# endif
#endif

#ifdef PNG_POWERPC_VSX_FILE

#include <signal.h> /* for sig_atomic_t */
static int png_have_vsx(png_structp png_ptr);
#include PNG_POWERPC_VSX_FILE

#else /* PNG_POWERPC_VSX_FILE */
# error "PNG_POWERPC_VSX_FILE undefined: no support for run-time POWERPC VSX checks"
#endif /* PNG_POWERPC_VSX_FILE */
#endif /* PNG_POWERPC_VSX_CHECK_SUPPORTED */

void
png_init_filter_functions_vsx(png_structp pp, unsigned int bpp)
{
/* The switch statement is compiled in for POWERPC_VSX_API, the call to
* png_have_vsx is compiled in for POWERPC_VSX_CHECK. If both are defined
* the check is only performed if the API has not set the PowerPC option on
* or off explicitly. In this case the check controls what happens.
*/

#ifdef PNG_POWERPC_VSX_API_SUPPORTED
switch ((pp->options >> PNG_POWERPC_VSX) & 3)
{
case PNG_OPTION_UNSET:
/* Allow the run-time check to execute if it has been enabled -
* thus both API and CHECK can be turned on. If it isn't supported
* this case will fall through to the 'default' below, which just
* returns.
*/
#endif /* PNG_POWERPC_VSX_API_SUPPORTED */
#ifdef PNG_POWERPC_VSX_CHECK_SUPPORTED
{
static volatile sig_atomic_t no_vsx = -1; /* not checked */

if (no_vsx < 0)
no_vsx = !png_have_vsx(pp);

if (no_vsx)
return;
}
#ifdef PNG_POWERPC_VSX_API_SUPPORTED
break;
#endif
#endif /* PNG_POWERPC_VSX_CHECK_SUPPORTED */

#ifdef PNG_POWERPC_VSX_API_SUPPORTED
default: /* OFF or INVALID */
return;

case PNG_OPTION_ON:
/* Option turned on */
break;
}
#endif

/* IMPORTANT: any new internal functions used here must be declared using
* PNG_INTERNAL_FUNCTION in ../pngpriv.h. This is required so that the
* 'prefix' option to configure works:
*
* ./configure --with-libpng-prefix=foobar_
*
* Verify you have got this right by running the above command, doing a build
* and examining pngprefix.h; it must contain a #define for every external
* function you add. (Notice that this happens automatically for the
* initialization function.)
*/
pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_vsx;

if (bpp == 3)
{
pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_vsx;
pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_vsx;
pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = png_read_filter_row_paeth3_vsx;
}

else if (bpp == 4)
{
pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_vsx;
pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_vsx;
pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = png_read_filter_row_paeth4_vsx;
}
}
#endif /* PNG_POWERPC_VSX_OPT > 0 */
#endif /* READ */