Module: wine Branch: master Commit: 44478b5364f0c82b5eacb2c3773e76d240bc5066 URL: http://source.winehq.org/git/wine.git/?a=commit;h=44478b5364f0c82b5eacb2c377...
Author: Vincent Povirk vincent@codeweavers.com Date: Thu Feb 4 17:43:53 2010 -0600
windowscodecs: Define a custom png error handler.
---
dlls/windowscodecs/pngformat.c | 38 ++++++++++++++++++++++++++++++++++---- 1 files changed, 34 insertions(+), 4 deletions(-)
diff --git a/dlls/windowscodecs/pngformat.c b/dlls/windowscodecs/pngformat.c index 4a398dd..482ea90 100644 --- a/dlls/windowscodecs/pngformat.c +++ b/dlls/windowscodecs/pngformat.c @@ -51,6 +51,7 @@ MAKE_FUNCPTR(png_destroy_write_struct); MAKE_FUNCPTR(png_error); MAKE_FUNCPTR(png_get_bit_depth); MAKE_FUNCPTR(png_get_color_type); +MAKE_FUNCPTR(png_get_error_ptr); MAKE_FUNCPTR(png_get_image_height); MAKE_FUNCPTR(png_get_image_width); MAKE_FUNCPTR(png_get_io_ptr); @@ -58,6 +59,7 @@ MAKE_FUNCPTR(png_get_pHYs); MAKE_FUNCPTR(png_get_PLTE); MAKE_FUNCPTR(png_get_tRNS); MAKE_FUNCPTR(png_set_bgr); +MAKE_FUNCPTR(png_set_error_fn); MAKE_FUNCPTR(png_set_expand_gray_1_2_4_to_8); MAKE_FUNCPTR(png_set_filler); MAKE_FUNCPTR(png_set_gray_to_rgb); @@ -92,6 +94,7 @@ static void *load_libpng(void) LOAD_FUNCPTR(png_error); LOAD_FUNCPTR(png_get_bit_depth); LOAD_FUNCPTR(png_get_color_type); + LOAD_FUNCPTR(png_get_error_ptr); LOAD_FUNCPTR(png_get_image_height); LOAD_FUNCPTR(png_get_image_width); LOAD_FUNCPTR(png_get_io_ptr); @@ -99,6 +102,7 @@ static void *load_libpng(void) LOAD_FUNCPTR(png_get_PLTE); LOAD_FUNCPTR(png_get_tRNS); LOAD_FUNCPTR(png_set_bgr); + LOAD_FUNCPTR(png_set_error_fn); LOAD_FUNCPTR(png_set_expand_gray_1_2_4_to_8); LOAD_FUNCPTR(png_set_filler); LOAD_FUNCPTR(png_set_gray_to_rgb); @@ -120,6 +124,23 @@ static void *load_libpng(void) return libpng_handle; }
+static void user_error_fn(png_structp png_ptr, png_const_charp error_message) +{ + jmp_buf *pjmpbuf; + + /* This uses setjmp/longjmp just like the default. We can't use the + * default because there's no way to access the jmp buffer in the png_struct + * that works in 1.2 and 1.4 and allows us to dynamically load libpng. */ + WARN("PNG error: %s\n", debugstr_a(error_message)); + pjmpbuf = ppng_get_error_ptr(png_ptr); + longjmp(*pjmpbuf, 1); +} + +static void user_warning_fn(png_structp png_ptr, png_const_charp warning_message) +{ + WARN("PNG warning: %s\n", debugstr_a(warning_message)); +} + typedef struct { const IWICBitmapDecoderVtbl *lpVtbl; const IWICBitmapFrameDecodeVtbl *lpFrameVtbl; @@ -226,6 +247,8 @@ static HRESULT WINAPI PngDecoder_Initialize(IWICBitmapDecoder *iface, IStream *p int num_trans; png_uint_32 transparency; png_color_16p trans_values; + jmp_buf jmpbuf; + TRACE("(%p,%p,%x)\n", iface, pIStream, cacheOptions);
/* initialize libpng */ @@ -249,13 +272,14 @@ static HRESULT WINAPI PngDecoder_Initialize(IWICBitmapDecoder *iface, IStream *p }
/* set up setjmp/longjmp error handling */ - if (setjmp(png_jmpbuf(This->png_ptr))) + if (setjmp(jmpbuf)) { ppng_destroy_read_struct(&This->png_ptr, &This->info_ptr, &This->end_info); HeapFree(GetProcessHeap(), 0, row_pointers); This->png_ptr = NULL; return E_FAIL; } + ppng_set_error_fn(This->png_ptr, &jmpbuf, user_error_fn, user_warning_fn);
/* seek to the start of the stream */ seek.QuadPart = 0; @@ -849,6 +873,7 @@ static HRESULT WINAPI PngFrameEncode_WritePixels(IWICBitmapFrameEncode *iface, PngEncoder *This = encoder_from_frame(iface); png_byte **row_pointers=NULL; UINT i; + jmp_buf jmpbuf; TRACE("(%p,%u,%u,%u,%p)\n", iface, lineCount, cbStride, cbBufferSize, pbPixels);
if (!This->frame_initialized || !This->width || !This->height || !This->format) @@ -858,11 +883,12 @@ static HRESULT WINAPI PngFrameEncode_WritePixels(IWICBitmapFrameEncode *iface, return E_INVALIDARG;
/* set up setjmp/longjmp error handling */ - if (setjmp(png_jmpbuf(This->png_ptr))) + if (setjmp(jmpbuf)) { HeapFree(GetProcessHeap(), 0, row_pointers); return E_FAIL; } + ppng_set_error_fn(This->png_ptr, &jmpbuf, user_error_fn, user_warning_fn);
if (!This->info_written) { @@ -978,16 +1004,18 @@ static HRESULT WINAPI PngFrameEncode_WriteSource(IWICBitmapFrameEncode *iface, static HRESULT WINAPI PngFrameEncode_Commit(IWICBitmapFrameEncode *iface) { PngEncoder *This = encoder_from_frame(iface); + jmp_buf jmpbuf; TRACE("(%p)\n", iface);
if (!This->info_written || This->lines_written != This->height || This->frame_committed) return WINCODEC_ERR_WRONGSTATE;
/* set up setjmp/longjmp error handling */ - if (setjmp(png_jmpbuf(This->png_ptr))) + if (setjmp(jmpbuf)) { return E_FAIL; } + ppng_set_error_fn(This->png_ptr, &jmpbuf, user_error_fn, user_warning_fn);
ppng_write_end(This->png_ptr, This->info_ptr);
@@ -1093,6 +1121,7 @@ static HRESULT WINAPI PngEncoder_Initialize(IWICBitmapEncoder *iface, IStream *pIStream, WICBitmapEncoderCacheOption cacheOption) { PngEncoder *This = (PngEncoder*)iface; + jmp_buf jmpbuf;
TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOption);
@@ -1116,7 +1145,7 @@ static HRESULT WINAPI PngEncoder_Initialize(IWICBitmapEncoder *iface, This->stream = pIStream;
/* set up setjmp/longjmp error handling */ - if (setjmp(png_jmpbuf(This->png_ptr))) + if (setjmp(jmpbuf)) { ppng_destroy_write_struct(&This->png_ptr, &This->info_ptr); This->png_ptr = NULL; @@ -1124,6 +1153,7 @@ static HRESULT WINAPI PngEncoder_Initialize(IWICBitmapEncoder *iface, This->stream = NULL; return E_FAIL; } + ppng_set_error_fn(This->png_ptr, &jmpbuf, user_error_fn, user_warning_fn);
/* set up custom i/o handling */ ppng_set_write_fn(This->png_ptr, This, user_write_data, user_flush);
-
Alexandre Julliard