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Housecleaning: revise identation and comments to meet libpng coding style.

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This commit is contained in:
Glenn Randers-Pehrson glennrp@comcast.net
2009-05-15 20:39:34 -05:00
parent 9a692c0769
commit b1c0d33128
19 changed files with 1845 additions and 1390 deletions
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56
pngrio.c
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@@ -20,10 +20,11 @@
#include "pngpriv.h"
/* Read the data from whatever input you are using. The default routine
reads from a file pointer. Note that this routine sometimes gets called
with very small lengths, so you should implement some kind of simple
buffering if you are using unbuffered reads. This should never be asked
to read more then 64K on a 16 bit machine. */
* reads from a file pointer. Note that this routine sometimes gets called
* with very small lengths, so you should implement some kind of simple
* buffering if you are using unbuffered reads. This should never be asked
* to read more then 64K on a 16 bit machine.
*/
void /* PRIVATE */
png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
@@ -36,16 +37,18 @@ png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
#if !defined(PNG_NO_STDIO)
/* 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. */
* 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
void PNGAPI
png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check;
if (png_ptr == NULL) return;
if (png_ptr == NULL)
return;
/* 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.
*/
@@ -55,7 +58,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
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.
*/
@@ -70,7 +73,8 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
png_byte *n_data;
png_FILE_p io_ptr;
if (png_ptr == NULL) return;
if (png_ptr == NULL)
return;
/* Check if data really is near. If so, use usual code. */
n_data = (png_byte *)CVT_PTR_NOCHECK(data);
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
@@ -105,25 +109,27 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
#endif
/* This function allows the application to supply a new input function
for libpng if standard C streams aren't being used.
This function takes as its arguments:
png_ptr - pointer to a png input data structure
io_ptr - pointer to user supplied structure containing info about
the input functions. May be NULL.
read_data_fn - pointer to a new input function that takes as its
arguments a pointer to a png_struct, a pointer to
a location where input data can be stored, and a 32-bit
unsigned int that is the number of bytes to be read.
To exit and output any fatal error messages the new write
function should call png_error(png_ptr, "Error msg").
May be NULL, in which case libpng's default function will
be used. */
* for libpng if standard C streams aren't being used.
*
* This function takes as its arguments:
* png_ptr - pointer to a png input data structure
* io_ptr - pointer to user supplied structure containing info about
* the input functions. May be NULL.
* read_data_fn - pointer to a new input function that takes as its
* arguments a pointer to a png_struct, a pointer to
* a location where input data can be stored, and a 32-bit
* unsigned int that is the number of bytes to be read.
* To exit and output any fatal error messages the new write
* function should call png_error(png_ptr, "Error msg").
* May be NULL, in which case libpng's default function will
* be used.
*/
void PNGAPI
png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
png_rw_ptr read_data_fn)
{
if (png_ptr == NULL) return;
if (png_ptr == NULL)
return;
png_ptr->io_ptr = io_ptr;
#if !defined(PNG_NO_STDIO)