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Bug 513681 - part 9 - Move PNG callbacks into decoder class.r=joe,a=blocker

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This commit is contained in:
Bobby Holley 2010-08-22 22:30:46 -04:00
parent bb57916dc5
commit 6d36a28a66
2 changed files with 31 additions and 23 deletions
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36
modules/libpr0n/decoders/nsPNGDecoder.cpp
View File

@ -61,18 +61,6 @@
using namespace mozilla::imagelib;
static void PNGAPI info_callback(png_structp png_ptr, png_infop info_ptr);
static void PNGAPI row_callback(png_structp png_ptr, png_bytep new_row,
png_uint_32 row_num, int pass);
#ifdef PNG_APNG_SUPPORTED
static void PNGAPI frame_info_callback(png_structp png_ptr,
png_uint_32 frame_num);
#endif
static void PNGAPI end_callback(png_structp png_ptr, png_infop info_ptr);
static void PNGAPI error_callback(png_structp png_ptr,
png_const_charp error_msg);
static void PNGAPI warning_callback(png_structp png_ptr,
png_const_charp warning_msg);
#ifdef PR_LOGGING
static PRLogModuleInfo *gPNGLog = PR_NewLogModule("PNGDecoder");
static PRLogModuleInfo *gPNGDecoderAccountingLog =
@ -285,8 +273,8 @@ NS_IMETHODIMP nsPNGDecoder::Init(imgIContainer *aImage,
/* Always decode to 24 bit pixdepth */
mPNG = png_create_read_struct(PNG_LIBPNG_VER_STRING,
NULL, error_callback,
warning_callback);
NULL, nsPNGDecoder::error_callback,
nsPNGDecoder::warning_callback);
if (!mPNG)
return NS_ERROR_OUT_OF_MEMORY;
@ -312,7 +300,9 @@ NS_IMETHODIMP nsPNGDecoder::Init(imgIContainer *aImage,
/* use this as libpng "progressive pointer" (retrieve in callbacks) */
png_set_progressive_read_fn(mPNG, static_cast<png_voidp>(this),
info_callback, row_callback, end_callback);
nsPNGDecoder::info_callback,
nsPNGDecoder::row_callback,
nsPNGDecoder::end_callback);
return NS_OK;
@ -557,7 +547,7 @@ PNGGetColorProfile(png_structp png_ptr, png_infop info_ptr,
}
void
info_callback(png_structp png_ptr, png_infop info_ptr)
nsPNGDecoder::info_callback(png_structp png_ptr, png_infop info_ptr)
{
/* int number_passes; NOT USED */
png_uint_32 width, height;
@ -696,7 +686,7 @@ info_callback(png_structp png_ptr, png_infop info_ptr)
#ifdef PNG_APNG_SUPPORTED
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_acTL))
png_set_progressive_frame_fn(png_ptr, frame_info_callback, NULL);
png_set_progressive_frame_fn(png_ptr, nsPNGDecoder::frame_info_callback, NULL);
if (png_get_first_frame_is_hidden(png_ptr, info_ptr)) {
decoder->mFrameIsHidden = PR_TRUE;
@ -737,8 +727,8 @@ info_callback(png_structp png_ptr, png_infop info_ptr)
}
void
row_callback(png_structp png_ptr, png_bytep new_row,
png_uint_32 row_num, int pass)
nsPNGDecoder::row_callback(png_structp png_ptr, png_bytep new_row,
png_uint_32 row_num, int pass)
{
/* libpng comments:
*
@ -872,7 +862,7 @@ row_callback(png_structp png_ptr, png_bytep new_row,
// got the header of a new frame that's coming
void
frame_info_callback(png_structp png_ptr, png_uint_32 frame_num)
nsPNGDecoder::frame_info_callback(png_structp png_ptr, png_uint_32 frame_num)
{
#ifdef PNG_APNG_SUPPORTED
png_uint_32 x_offset, y_offset;
@ -897,7 +887,7 @@ frame_info_callback(png_structp png_ptr, png_uint_32 frame_num)
}
void
end_callback(png_structp png_ptr, png_infop info_ptr)
nsPNGDecoder::end_callback(png_structp png_ptr, png_infop info_ptr)
{
/* libpng comments:
*
@ -930,7 +920,7 @@ end_callback(png_structp png_ptr, png_infop info_ptr)
void
error_callback(png_structp png_ptr, png_const_charp error_msg)
nsPNGDecoder::error_callback(png_structp png_ptr, png_const_charp error_msg)
{
PR_LOG(gPNGLog, PR_LOG_ERROR, ("libpng error: %s\n", error_msg));
longjmp(png_jmpbuf(png_ptr), 1);
@ -938,7 +928,7 @@ error_callback(png_structp png_ptr, png_const_charp error_msg)
void
warning_callback(png_structp png_ptr, png_const_charp warning_msg)
nsPNGDecoder::warning_callback(png_structp png_ptr, png_const_charp warning_msg)
{
PR_LOG(gPNGLog, PR_LOG_WARNING, ("libpng warning: %s\n", warning_msg));
}

18
modules/libpr0n/decoders/nsPNGDecoder.h
View File

@ -101,6 +101,24 @@ public:
PRPackedBool mFrameHasNoAlpha;
PRPackedBool mFrameIsHidden;
PRPackedBool mNotifiedDone;
/*
* libpng callbacks
*
* We put these in the class so that they can access protected members.
*/
static void PNGAPI info_callback(png_structp png_ptr, png_infop info_ptr);
static void PNGAPI row_callback(png_structp png_ptr, png_bytep new_row,
png_uint_32 row_num, int pass);
#ifdef PNG_APNG_SUPPORTED
static void PNGAPI frame_info_callback(png_structp png_ptr,
png_uint_32 frame_num);
#endif
static void PNGAPI end_callback(png_structp png_ptr, png_infop info_ptr);
static void PNGAPI error_callback(png_structp png_ptr,
png_const_charp error_msg);
static void PNGAPI warning_callback(png_structp png_ptr,
png_const_charp warning_msg);
};
#endif // nsPNGDecoder_h__