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Imported from libpng-0.97a.tar

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This commit is contained in:
Glenn Randers-Pehrson
1998-01-03 22:40:55 -06:00
parent b6ce43d6ff
commit 70e3f543f1
14 changed files with 460 additions and 135 deletions
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6
pngrio.c
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@@ -33,6 +33,7 @@ png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
png_error(png_ptr, "Call to NULL read function");
}
#if !defined(PNG_NO_STDIO)
/* 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
@@ -103,6 +104,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
}
}
#endif
#endif
/* This function allows the application to supply a new input function
for libpng if standard C streams aren't being used.
@@ -123,10 +125,14 @@ png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
{
png_ptr->io_ptr = io_ptr;
#if !defined(PNG_NO_STDIO)
if (read_data_fn != NULL)
png_ptr->read_data_fn = read_data_fn;
else
png_ptr->read_data_fn = png_default_read_data;
#else
png_ptr->read_data_fn = read_data_fn;
#endif
/* It is an error to write to a read device */
png_ptr->write_data_fn = NULL;