Module: wine Branch: master Commit: 5c5c5aabc549044e1c200e5932b7c5bd835e84be URL: http://source.winehq.org/git/wine.git/?a=commit;h=5c5c5aabc549044e1c200e5932...
Author: Evan Stade estade@gmail.com Date: Tue Jun 19 13:12:57 2007 -0700
oleaut32: Added support for decoding some PNG files.
---
dlls/oleaut32/olepicture.c | 198 ++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 198 insertions(+), 0 deletions(-)
diff --git a/dlls/oleaut32/olepicture.c b/dlls/oleaut32/olepicture.c index 3fb5611..516b7f9 100644 --- a/dlls/oleaut32/olepicture.c +++ b/dlls/oleaut32/olepicture.c @@ -79,6 +79,11 @@ #undef UINT16 #endif
+#ifdef HAVE_PNG_H +#undef FAR +#include <png.h> +#endif + #include "ungif.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole); @@ -1334,6 +1339,193 @@ static HRESULT OLEPictureImpl_LoadDIB(OLEPictureImpl *This, BYTE *xbuf, ULONG xr return S_OK; }
+/***************************************************** +* start of PNG-specific code +* currently only supports colortype PNG_COLOR_TYPE_RGB +*/ +#ifdef SONAME_LIBPNG +typedef struct{ + ULONG position; + ULONG size; + BYTE * buff; +} png_io; + +static void png_stream_read_data(png_structp png_ptr, png_bytep data, + png_size_t length) +{ + png_io * io_ptr = png_ptr->io_ptr; + + if(length + io_ptr->position > io_ptr->size){ + length = io_ptr->size - io_ptr->position; + } + + memcpy(data, io_ptr->buff + io_ptr->position, length); + + io_ptr->position += length; +} + +static void *libpng_handle; +#define MAKE_FUNCPTR(f) static typeof(f) * p##f +MAKE_FUNCPTR(png_create_read_struct); +MAKE_FUNCPTR(png_create_info_struct); +MAKE_FUNCPTR(png_set_read_fn); +MAKE_FUNCPTR(png_read_info); +MAKE_FUNCPTR(png_read_image); +MAKE_FUNCPTR(png_get_rowbytes); +MAKE_FUNCPTR(png_set_bgr); +MAKE_FUNCPTR(png_destroy_read_struct); +MAKE_FUNCPTR(png_set_palette_to_rgb); +MAKE_FUNCPTR(png_read_update_info); +#undef MAKE_FUNCPTR + +static void *load_libpng(void) +{ + if((libpng_handle = wine_dlopen(SONAME_LIBPNG, RTLD_NOW, NULL, 0)) != NULL) { + +#define LOAD_FUNCPTR(f) \ + if((p##f = wine_dlsym(libpng_handle, #f, NULL, 0)) == NULL) { \ + libpng_handle = NULL; \ + return NULL; \ + } + LOAD_FUNCPTR(png_create_read_struct); + LOAD_FUNCPTR(png_create_info_struct); + LOAD_FUNCPTR(png_set_read_fn); + LOAD_FUNCPTR(png_read_info); + LOAD_FUNCPTR(png_read_image); + LOAD_FUNCPTR(png_get_rowbytes); + LOAD_FUNCPTR(png_set_bgr); + LOAD_FUNCPTR(png_destroy_read_struct); + LOAD_FUNCPTR(png_set_palette_to_rgb); + LOAD_FUNCPTR(png_read_update_info); + +#undef LOAD_FUNCPTR + } + return libpng_handle; +} +#endif /* SONAME_LIBPNG */ + +static HRESULT OLEPictureImpl_LoadPNG(OLEPictureImpl *This, BYTE *xbuf, ULONG xread) +{ +#ifdef SONAME_LIBPNG + png_io io; + png_structp png_ptr = NULL; + png_infop info_ptr = NULL; + INT row, rowsize, height, width; + png_bytep* row_pointers = NULL; + png_bytep pngdata = NULL; + BITMAPINFOHEADER bmi; + HDC hdcref = NULL; + HRESULT ret; + BOOL set_bgr = FALSE; + + if(!libpng_handle) { + if(!load_libpng()) { + ERR("Failed reading PNG because unable to find %s\n",SONAME_LIBPNG); + return E_FAIL; + } + } + + io.size = xread; + io.position = 0; + io.buff = xbuf; + + png_ptr = ppng_create_read_struct(PNG_LIBPNG_VER_STRING, + NULL, NULL, NULL); + + if(setjmp(png_jmpbuf(png_ptr))){ + TRACE("Error in libpng\n"); + ret = E_FAIL; + goto pngend; + } + + info_ptr = ppng_create_info_struct(png_ptr); + ppng_set_read_fn(png_ptr, &io, png_stream_read_data); + ppng_read_info(png_ptr, info_ptr); + + if(!(png_ptr->color_type == PNG_COLOR_TYPE_RGB || + png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)){ + FIXME("Unsupported .PNG type: %d\n", png_ptr->color_type); + ret = E_FAIL; + goto pngend; + } + + if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE){ + ppng_set_palette_to_rgb(png_ptr); + set_bgr = TRUE; + } + + if (png_ptr->color_type == PNG_COLOR_TYPE_RGB || + png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA || + set_bgr){ + ppng_set_bgr(png_ptr); + } + + ppng_read_update_info(png_ptr, info_ptr); + + rowsize = ppng_get_rowbytes(png_ptr, info_ptr); + /* align rowsize to 4-byte boundary */ + rowsize = (rowsize + 3) & ~3; + height = info_ptr->height; + width = info_ptr->width; + + pngdata = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, height * rowsize); + row_pointers = HeapAlloc(GetProcessHeap(), 0, height * (sizeof(VOID *))); + + if(!pngdata || !row_pointers){ + ret = E_FAIL; + goto pngend; + } + + for (row = 0; row < height; row++){ + row_pointers[row] = pngdata + row * rowsize; + } + + ppng_read_image(png_ptr, row_pointers); + + bmi.biSize = sizeof(bmi); + bmi.biWidth = width; + bmi.biHeight = -height; + bmi.biPlanes = 1; + bmi.biBitCount = info_ptr->channels * 8; + bmi.biCompression = BI_RGB; + bmi.biSizeImage = height * rowsize; + bmi.biXPelsPerMeter = 0; + bmi.biYPelsPerMeter = 0; + bmi.biClrUsed = 0; + bmi.biClrImportant = 0; + + hdcref = GetDC(0); + This->desc.u.bmp.hbitmap = CreateDIBitmap( + hdcref, + &bmi, + CBM_INIT, + pngdata, + (BITMAPINFO*)&bmi, + DIB_RGB_COLORS + ); + ReleaseDC(0, hdcref); + This->desc.picType = PICTYPE_BITMAP; + OLEPictureImpl_SetBitmap(This); + ret = S_OK; + +pngend: + if(png_ptr) + ppng_destroy_read_struct(&png_ptr, + (info_ptr ? &info_ptr : (png_infopp) NULL), + (png_infopp)NULL); + HeapFree(GetProcessHeap(), 0, row_pointers); + HeapFree(GetProcessHeap(), 0, pngdata); + return ret; +#else /* SONAME_LIBPNG */ + ERR("Trying to load PNG picture, but PNG supported not compiled in.\n"); + return E_FAIL; +#endif +} + +/***************************************************** +* start of Icon-specific code +*/ + static HRESULT OLEPictureImpl_LoadIcon(OLEPictureImpl *This, BYTE *xbuf, ULONG xread) { HICON hicon; @@ -1583,6 +1775,9 @@ static HRESULT WINAPI OLEPictureImpl_Load(IPersistStream* iface,IStream*pStm) { case 0x4d42: /* Bitmap */ hr = OLEPictureImpl_LoadDIB(This, xbuf, xread); break; + case 0x5089: /* PNG */ + hr = OLEPictureImpl_LoadPNG(This, xbuf, xread); + break; case 0x0000: { /* ICON , first word is dwReserved */ hr = OLEPictureImpl_LoadIcon(This, xbuf, xread); break; @@ -1878,6 +2073,9 @@ static HRESULT WINAPI OLEPictureImpl_Save( case 0x4947: FIXME("(%p,%p,%d), PICTYPE_BITMAP (format GIF) not implemented!\n",This,pStm,fClearDirty); break; + case 0x5089: + FIXME("(%p,%p,%d), PICTYPE_BITMAP (format PNG) not implemented!\n",This,pStm,fClearDirty); + break; default: FIXME("(%p,%p,%d), PICTYPE_BITMAP (format UNKNOWN, using BMP?) not implemented!\n",This,pStm,fClearDirty); break;