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Imported from libpng-1.0.8beta2.tar

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This commit is contained in:
Glenn Randers-Pehrson
2000-07-10 07:48:54 -05:00
parent 316f97a063
commit 15dac0b14e
45 changed files with 7005 additions and 96 deletions
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21
pngrio.c
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@@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
* libpng 1.0.8beta1 - July 8, 2000
* libpng 1.0.8beta2 - July 10, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -47,13 +47,16 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
/* 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.
*/
#if defined(_WIN32_WCE)
if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
check = 0;
#else
check = (png_size_t)fread(data, (png_size_t)1, length,
(png_FILE_p)png_ptr->io_ptr);
#endif
if (check != length)
{
png_error(png_ptr, "Read Error");
}
}
#else
/* this is the model-independent version. Since the standard I/O library
@@ -76,7 +79,12 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
if ((png_bytep)n_data == data)
{
#if defined(_WIN32_WCE)
if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
check = 0;
#else
check = fread(n_data, 1, length, io_ptr);
#endif
}
else
{
@@ -87,7 +95,12 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
do
{
read = MIN(NEAR_BUF_SIZE, remaining);
#if defined(_WIN32_WCE)
if ( !ReadFile((HANDLE)(io_ptr), buf, read, &err, NULL) )
err = 0;
#else
err = fread(buf, (png_size_t)1, read, io_ptr);
#endif
png_memcpy(data, buf, read); /* copy far buffer to near buffer */
if(err != read)
break;
@@ -99,9 +112,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
while (remaining != 0);
}
if ((png_uint_32)check != (png_uint_32)length)
{
png_error(png_ptr, "read Error");
}
}
#endif
#endif