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Sweden-Number/dlls/windowscodecs/pngformat.c

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/*
* Copyright 2009 Vincent Povirk for CodeWeavers
* Copyright 2016 Dmitry Timoshkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#ifdef SONAME_LIBPNG
#include <png.h>
#endif
#define NONAMELESSUNION
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "objbase.h"
#include "wincodecs_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
static inline ULONG read_ulong_be(BYTE* data)
{
return data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
}
static HRESULT LoadTextMetadata(IStream *stream, const GUID *preferred_vendor,
DWORD persist_options, MetadataItem **items, DWORD *item_count)
{
HRESULT hr;
BYTE type[4];
BYTE *data;
ULONG data_size;
ULONG name_len, value_len;
BYTE *name_end_ptr;
LPSTR name, value;
MetadataItem *result;
hr = read_png_chunk(stream, type, &data, &data_size);
if (FAILED(hr)) return hr;
name_end_ptr = memchr(data, 0, data_size);
name_len = name_end_ptr - data;
if (!name_end_ptr || name_len > 79)
{
HeapFree(GetProcessHeap(), 0, data);
return E_FAIL;
}
value_len = data_size - name_len - 1;
result = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(MetadataItem));
name = HeapAlloc(GetProcessHeap(), 0, name_len + 1);
value = HeapAlloc(GetProcessHeap(), 0, value_len + 1);
if (!result || !name || !value)
{
HeapFree(GetProcessHeap(), 0, data);
HeapFree(GetProcessHeap(), 0, result);
HeapFree(GetProcessHeap(), 0, name);
HeapFree(GetProcessHeap(), 0, value);
return E_OUTOFMEMORY;
}
PropVariantInit(&result[0].schema);
PropVariantInit(&result[0].id);
PropVariantInit(&result[0].value);
memcpy(name, data, name_len + 1);
memcpy(value, name_end_ptr + 1, value_len);
value[value_len] = 0;
result[0].id.vt = VT_LPSTR;
result[0].id.u.pszVal = name;
result[0].value.vt = VT_LPSTR;
result[0].value.u.pszVal = value;
*items = result;
*item_count = 1;
HeapFree(GetProcessHeap(), 0, data);
return S_OK;
}
static const MetadataHandlerVtbl TextReader_Vtbl = {
0,
&CLSID_WICPngTextMetadataReader,
LoadTextMetadata
};
HRESULT PngTextReader_CreateInstance(REFIID iid, void** ppv)
{
return MetadataReader_Create(&TextReader_Vtbl, iid, ppv);
}
static HRESULT LoadGamaMetadata(IStream *stream, const GUID *preferred_vendor,
DWORD persist_options, MetadataItem **items, DWORD *item_count)
{
HRESULT hr;
BYTE type[4];
BYTE *data;
ULONG data_size;
ULONG gamma;
static const WCHAR ImageGamma[] = {'I','m','a','g','e','G','a','m','m','a',0};
LPWSTR name;
MetadataItem *result;
hr = read_png_chunk(stream, type, &data, &data_size);
if (FAILED(hr)) return hr;
if (data_size < 4)
{
HeapFree(GetProcessHeap(), 0, data);
return E_FAIL;
}
gamma = read_ulong_be(data);
HeapFree(GetProcessHeap(), 0, data);
result = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(MetadataItem));
name = HeapAlloc(GetProcessHeap(), 0, sizeof(ImageGamma));
if (!result || !name)
{
HeapFree(GetProcessHeap(), 0, result);
HeapFree(GetProcessHeap(), 0, name);
return E_OUTOFMEMORY;
}
PropVariantInit(&result[0].schema);
PropVariantInit(&result[0].id);
PropVariantInit(&result[0].value);
memcpy(name, ImageGamma, sizeof(ImageGamma));
result[0].id.vt = VT_LPWSTR;
result[0].id.u.pwszVal = name;
result[0].value.vt = VT_UI4;
result[0].value.u.ulVal = gamma;
*items = result;
*item_count = 1;
return S_OK;
}
static const MetadataHandlerVtbl GamaReader_Vtbl = {
0,
&CLSID_WICPngGamaMetadataReader,
LoadGamaMetadata
};
HRESULT PngGamaReader_CreateInstance(REFIID iid, void** ppv)
{
return MetadataReader_Create(&GamaReader_Vtbl, iid, ppv);
}
static HRESULT LoadChrmMetadata(IStream *stream, const GUID *preferred_vendor,
DWORD persist_options, MetadataItem **items, DWORD *item_count)
{
HRESULT hr;
BYTE type[4];
BYTE *data;
ULONG data_size;
static const WCHAR names[8][12] = {
{'W','h','i','t','e','P','o','i','n','t','X',0},
{'W','h','i','t','e','P','o','i','n','t','Y',0},
{'R','e','d','X',0},
{'R','e','d','Y',0},
{'G','r','e','e','n','X',0},
{'G','r','e','e','n','Y',0},
{'B','l','u','e','X',0},
{'B','l','u','e','Y',0},
};
LPWSTR dyn_names[8] = {0};
MetadataItem *result;
int i;
hr = read_png_chunk(stream, type, &data, &data_size);
if (FAILED(hr)) return hr;
if (data_size < 32)
{
HeapFree(GetProcessHeap(), 0, data);
return E_FAIL;
}
result = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(MetadataItem)*8);
for (i=0; i<8; i++)
{
dyn_names[i] = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR)*(lstrlenW(names[i])+1));
if (!dyn_names[i]) break;
}
if (!result || i < 8)
{
HeapFree(GetProcessHeap(), 0, result);
for (i=0; i<8; i++)
HeapFree(GetProcessHeap(), 0, dyn_names[i]);
HeapFree(GetProcessHeap(), 0, data);
return E_OUTOFMEMORY;
}
for (i=0; i<8; i++)
{
PropVariantInit(&result[i].schema);
PropVariantInit(&result[i].id);
result[i].id.vt = VT_LPWSTR;
result[i].id.u.pwszVal = dyn_names[i];
lstrcpyW(dyn_names[i], names[i]);
PropVariantInit(&result[i].value);
result[i].value.vt = VT_UI4;
result[i].value.u.ulVal = read_ulong_be(&data[i*4]);
}
*items = result;
*item_count = 8;
HeapFree(GetProcessHeap(), 0, data);
return S_OK;
}
static const MetadataHandlerVtbl ChrmReader_Vtbl = {
0,
&CLSID_WICPngChrmMetadataReader,
LoadChrmMetadata
};
HRESULT PngChrmReader_CreateInstance(REFIID iid, void** ppv)
{
return MetadataReader_Create(&ChrmReader_Vtbl, iid, ppv);
}
#ifdef SONAME_LIBPNG
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_create_write_struct);
MAKE_FUNCPTR(png_destroy_read_struct);
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_iCCP);
MAKE_FUNCPTR(png_get_image_height);
MAKE_FUNCPTR(png_get_image_width);
MAKE_FUNCPTR(png_get_io_ptr);
MAKE_FUNCPTR(png_get_pHYs);
MAKE_FUNCPTR(png_get_PLTE);
MAKE_FUNCPTR(png_get_tRNS);
MAKE_FUNCPTR(png_set_bgr);
MAKE_FUNCPTR(png_set_crc_action);
MAKE_FUNCPTR(png_set_error_fn);
MAKE_FUNCPTR(png_set_filler);
MAKE_FUNCPTR(png_set_filter);
MAKE_FUNCPTR(png_set_gray_to_rgb);
MAKE_FUNCPTR(png_set_interlace_handling);
MAKE_FUNCPTR(png_set_IHDR);
MAKE_FUNCPTR(png_set_pHYs);
MAKE_FUNCPTR(png_set_PLTE);
MAKE_FUNCPTR(png_set_read_fn);
MAKE_FUNCPTR(png_set_strip_16);
MAKE_FUNCPTR(png_set_tRNS);
MAKE_FUNCPTR(png_set_tRNS_to_alpha);
MAKE_FUNCPTR(png_set_write_fn);
MAKE_FUNCPTR(png_set_swap);
MAKE_FUNCPTR(png_read_end);
MAKE_FUNCPTR(png_read_image);
MAKE_FUNCPTR(png_read_info);
MAKE_FUNCPTR(png_write_end);
MAKE_FUNCPTR(png_write_info);
MAKE_FUNCPTR(png_write_rows);
#undef MAKE_FUNCPTR
static CRITICAL_SECTION init_png_cs;
static CRITICAL_SECTION_DEBUG init_png_cs_debug =
{
0, 0, &init_png_cs,
{ &init_png_cs_debug.ProcessLocksList,
&init_png_cs_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": init_png_cs") }
};
static CRITICAL_SECTION init_png_cs = { &init_png_cs_debug, -1, 0, 0, 0, 0 };
static const WCHAR wszPngInterlaceOption[] = {'I','n','t','e','r','l','a','c','e','O','p','t','i','o','n',0};
static const WCHAR wszPngFilterOption[] = {'F','i','l','t','e','r','O','p','t','i','o','n',0};
static void *load_libpng(void)
{
void *result;
EnterCriticalSection(&init_png_cs);
if(!libpng_handle && (libpng_handle = dlopen(SONAME_LIBPNG, RTLD_NOW)) != NULL) {
#define LOAD_FUNCPTR(f) \
if((p##f = dlsym(libpng_handle, #f)) == NULL) { \
libpng_handle = NULL; \
LeaveCriticalSection(&init_png_cs); \
return NULL; \
}
LOAD_FUNCPTR(png_create_read_struct);
LOAD_FUNCPTR(png_create_info_struct);
LOAD_FUNCPTR(png_create_write_struct);
LOAD_FUNCPTR(png_destroy_read_struct);
LOAD_FUNCPTR(png_destroy_write_struct);
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_iCCP);
LOAD_FUNCPTR(png_get_image_height);
LOAD_FUNCPTR(png_get_image_width);
LOAD_FUNCPTR(png_get_io_ptr);
LOAD_FUNCPTR(png_get_pHYs);
LOAD_FUNCPTR(png_get_PLTE);
LOAD_FUNCPTR(png_get_tRNS);
LOAD_FUNCPTR(png_set_bgr);
LOAD_FUNCPTR(png_set_crc_action);
LOAD_FUNCPTR(png_set_error_fn);
LOAD_FUNCPTR(png_set_filler);
LOAD_FUNCPTR(png_set_filter);
LOAD_FUNCPTR(png_set_gray_to_rgb);
LOAD_FUNCPTR(png_set_interlace_handling);
LOAD_FUNCPTR(png_set_IHDR);
LOAD_FUNCPTR(png_set_pHYs);
LOAD_FUNCPTR(png_set_PLTE);
LOAD_FUNCPTR(png_set_read_fn);
LOAD_FUNCPTR(png_set_strip_16);
LOAD_FUNCPTR(png_set_tRNS);
LOAD_FUNCPTR(png_set_tRNS_to_alpha);
LOAD_FUNCPTR(png_set_write_fn);
LOAD_FUNCPTR(png_set_swap);
LOAD_FUNCPTR(png_read_end);
LOAD_FUNCPTR(png_read_image);
LOAD_FUNCPTR(png_read_info);
LOAD_FUNCPTR(png_write_end);
LOAD_FUNCPTR(png_write_info);
LOAD_FUNCPTR(png_write_rows);
#undef LOAD_FUNCPTR
}
result = libpng_handle;
LeaveCriticalSection(&init_png_cs);
return result;
}
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));
}
struct png_pixelformat {
const WICPixelFormatGUID *guid;
UINT bpp;
int bit_depth;
int color_type;
BOOL remove_filler;
BOOL swap_rgb;
};
static const struct png_pixelformat formats[] = {
{&GUID_WICPixelFormat32bppBGRA, 32, 8, PNG_COLOR_TYPE_RGB_ALPHA, 0, 1},
{&GUID_WICPixelFormat24bppBGR, 24, 8, PNG_COLOR_TYPE_RGB, 0, 1},
{&GUID_WICPixelFormatBlackWhite, 1, 1, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat2bppGray, 2, 2, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat4bppGray, 4, 4, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat8bppGray, 8, 8, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat16bppGray, 16, 16, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat32bppBGR, 32, 8, PNG_COLOR_TYPE_RGB, 1, 1},
{&GUID_WICPixelFormat48bppRGB, 48, 16, PNG_COLOR_TYPE_RGB, 0, 0},
{&GUID_WICPixelFormat64bppRGBA, 64, 16, PNG_COLOR_TYPE_RGB_ALPHA, 0, 0},
{&GUID_WICPixelFormat1bppIndexed, 1, 1, PNG_COLOR_TYPE_PALETTE, 0, 0},
{&GUID_WICPixelFormat2bppIndexed, 2, 2, PNG_COLOR_TYPE_PALETTE, 0, 0},
{&GUID_WICPixelFormat4bppIndexed, 4, 4, PNG_COLOR_TYPE_PALETTE, 0, 0},
{&GUID_WICPixelFormat8bppIndexed, 8, 8, PNG_COLOR_TYPE_PALETTE, 0, 0},
{NULL},
};
typedef struct PngEncoder {
IWICBitmapEncoder IWICBitmapEncoder_iface;
IWICBitmapFrameEncode IWICBitmapFrameEncode_iface;
LONG ref;
IStream *stream;
png_structp png_ptr;
png_infop info_ptr;
UINT frame_count;
BOOL frame_initialized;
const struct png_pixelformat *format;
BOOL info_written;
UINT width, height;
double xres, yres;
UINT lines_written;
BOOL frame_committed;
BOOL committed;
CRITICAL_SECTION lock;
BOOL interlace;
WICPngFilterOption filter;
BYTE *data;
UINT stride;
UINT passes;
WICColor palette[256];
UINT colors;
} PngEncoder;
static inline PngEncoder *impl_from_IWICBitmapEncoder(IWICBitmapEncoder *iface)
{
return CONTAINING_RECORD(iface, PngEncoder, IWICBitmapEncoder_iface);
}
static inline PngEncoder *impl_from_IWICBitmapFrameEncode(IWICBitmapFrameEncode *iface)
{
return CONTAINING_RECORD(iface, PngEncoder, IWICBitmapFrameEncode_iface);
}
static HRESULT WINAPI PngFrameEncode_QueryInterface(IWICBitmapFrameEncode *iface, REFIID iid,
void **ppv)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICBitmapFrameEncode, iid))
{
*ppv = &This->IWICBitmapFrameEncode_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI PngFrameEncode_AddRef(IWICBitmapFrameEncode *iface)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
return IWICBitmapEncoder_AddRef(&This->IWICBitmapEncoder_iface);
}
static ULONG WINAPI PngFrameEncode_Release(IWICBitmapFrameEncode *iface)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
return IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
}
static HRESULT WINAPI PngFrameEncode_Initialize(IWICBitmapFrameEncode *iface,
IPropertyBag2 *pIEncoderOptions)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
WICPngFilterOption filter;
BOOL interlace;
PROPBAG2 opts[2]= {{0}};
VARIANT opt_values[2];
HRESULT opt_hres[2];
HRESULT hr;
TRACE("(%p,%p)\n", iface, pIEncoderOptions);
opts[0].pstrName = (LPOLESTR)wszPngInterlaceOption;
opts[0].vt = VT_BOOL;
opts[1].pstrName = (LPOLESTR)wszPngFilterOption;
opts[1].vt = VT_UI1;
if (pIEncoderOptions)
{
hr = IPropertyBag2_Read(pIEncoderOptions, ARRAY_SIZE(opts), opts, NULL, opt_values, opt_hres);
if (FAILED(hr))
return hr;
if (V_VT(&opt_values[0]) == VT_EMPTY)
interlace = FALSE;
else
interlace = (V_BOOL(&opt_values[0]) != 0);
filter = V_UI1(&opt_values[1]);
if (filter > WICPngFilterAdaptive)
{
WARN("Unrecognized filter option value %u.\n", filter);
filter = WICPngFilterUnspecified;
}
}
else
{
interlace = FALSE;
filter = WICPngFilterUnspecified;
}
EnterCriticalSection(&This->lock);
if (This->frame_initialized)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
This->interlace = interlace;
This->filter = filter;
This->frame_initialized = TRUE;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PngFrameEncode_SetSize(IWICBitmapFrameEncode *iface,
UINT uiWidth, UINT uiHeight)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
TRACE("(%p,%u,%u)\n", iface, uiWidth, uiHeight);
EnterCriticalSection(&This->lock);
if (!This->frame_initialized || This->info_written)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
This->width = uiWidth;
This->height = uiHeight;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PngFrameEncode_SetResolution(IWICBitmapFrameEncode *iface,
double dpiX, double dpiY)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
TRACE("(%p,%0.2f,%0.2f)\n", iface, dpiX, dpiY);
EnterCriticalSection(&This->lock);
if (!This->frame_initialized || This->info_written)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
This->xres = dpiX;
This->yres = dpiY;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PngFrameEncode_SetPixelFormat(IWICBitmapFrameEncode *iface,
WICPixelFormatGUID *pPixelFormat)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
int i;
TRACE("(%p,%s)\n", iface, debugstr_guid(pPixelFormat));
EnterCriticalSection(&This->lock);
if (!This->frame_initialized || This->info_written)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
for (i=0; formats[i].guid; i++)
{
if (memcmp(formats[i].guid, pPixelFormat, sizeof(GUID)) == 0)
break;
}
if (!formats[i].guid) i = 0;
This->format = &formats[i];
memcpy(pPixelFormat, This->format->guid, sizeof(GUID));
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PngFrameEncode_SetColorContexts(IWICBitmapFrameEncode *iface,
UINT cCount, IWICColorContext **ppIColorContext)
{
FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
return E_NOTIMPL;
}
static HRESULT WINAPI PngFrameEncode_SetPalette(IWICBitmapFrameEncode *iface,
IWICPalette *palette)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr;
TRACE("(%p,%p)\n", iface, palette);
if (!palette) return E_INVALIDARG;
EnterCriticalSection(&This->lock);
if (This->frame_initialized)
hr = IWICPalette_GetColors(palette, 256, This->palette, &This->colors);
else
hr = WINCODEC_ERR_NOTINITIALIZED;
LeaveCriticalSection(&This->lock);
return hr;
}
static HRESULT WINAPI PngFrameEncode_SetThumbnail(IWICBitmapFrameEncode *iface,
IWICBitmapSource *pIThumbnail)
{
FIXME("(%p,%p): stub\n", iface, pIThumbnail);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI PngFrameEncode_WritePixels(IWICBitmapFrameEncode *iface,
UINT lineCount, UINT cbStride, UINT cbBufferSize, BYTE *pbPixels)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
png_byte **row_pointers=NULL;
UINT i;
jmp_buf jmpbuf;
TRACE("(%p,%u,%u,%u,%p)\n", iface, lineCount, cbStride, cbBufferSize, pbPixels);
EnterCriticalSection(&This->lock);
if (!This->frame_initialized || !This->width || !This->height || !This->format)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
if (lineCount == 0 || lineCount + This->lines_written > This->height)
{
LeaveCriticalSection(&This->lock);
return E_INVALIDARG;
}
/* set up setjmp/longjmp error handling */
if (setjmp(jmpbuf))
{
LeaveCriticalSection(&This->lock);
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)
{
if (This->interlace)
{
/* libpng requires us to write all data multiple times in this case. */
This->stride = (This->format->bpp * This->width + 7)/8;
This->data = HeapAlloc(GetProcessHeap(), 0, This->height * This->stride);
if (!This->data)
{
LeaveCriticalSection(&This->lock);
return E_OUTOFMEMORY;
}
}
/* Tell PNG we need to byte swap if writing a >8-bpp image */
if (This->format->bit_depth > 8)
ppng_set_swap(This->png_ptr);
ppng_set_IHDR(This->png_ptr, This->info_ptr, This->width, This->height,
This->format->bit_depth, This->format->color_type,
This->interlace ? PNG_INTERLACE_ADAM7 : PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
if (This->xres != 0.0 && This->yres != 0.0)
{
ppng_set_pHYs(This->png_ptr, This->info_ptr, (This->xres+0.0127) / 0.0254,
(This->yres+0.0127) / 0.0254, PNG_RESOLUTION_METER);
}
if (This->format->color_type == PNG_COLOR_TYPE_PALETTE && This->colors)
{
png_color png_palette[256];
png_byte trans[256];
UINT i, num_trans = 0, colors;
/* Newer libpng versions don't accept larger palettes than the declared
* bit depth, so we need to generate the palette of the correct length.
*/
colors = min(This->colors, 1 << This->format->bit_depth);
for (i = 0; i < colors; i++)
{
png_palette[i].red = (This->palette[i] >> 16) & 0xff;
png_palette[i].green = (This->palette[i] >> 8) & 0xff;
png_palette[i].blue = This->palette[i] & 0xff;
trans[i] = (This->palette[i] >> 24) & 0xff;
if (trans[i] != 0xff)
num_trans = i+1;
}
ppng_set_PLTE(This->png_ptr, This->info_ptr, png_palette, colors);
if (num_trans)
ppng_set_tRNS(This->png_ptr, This->info_ptr, trans, num_trans, NULL);
}
ppng_write_info(This->png_ptr, This->info_ptr);
if (This->format->remove_filler)
ppng_set_filler(This->png_ptr, 0, PNG_FILLER_AFTER);
if (This->format->swap_rgb)
ppng_set_bgr(This->png_ptr);
if (This->interlace)
This->passes = ppng_set_interlace_handling(This->png_ptr);
if (This->filter != WICPngFilterUnspecified)
{
static const int png_filter_map[] =
{
/* WICPngFilterUnspecified */ PNG_NO_FILTERS,
/* WICPngFilterNone */ PNG_FILTER_NONE,
/* WICPngFilterSub */ PNG_FILTER_SUB,
/* WICPngFilterUp */ PNG_FILTER_UP,
/* WICPngFilterAverage */ PNG_FILTER_AVG,
/* WICPngFilterPaeth */ PNG_FILTER_PAETH,
/* WICPngFilterAdaptive */ PNG_ALL_FILTERS,
};
ppng_set_filter(This->png_ptr, 0, png_filter_map[This->filter]);
}
This->info_written = TRUE;
}
if (This->interlace)
{
/* Just store the data so we can write it in multiple passes in Commit. */
for (i=0; i<lineCount; i++)
memcpy(This->data + This->stride * (This->lines_written + i),
pbPixels + cbStride * i,
This->stride);
This->lines_written += lineCount;
LeaveCriticalSection(&This->lock);
return S_OK;
}
row_pointers = HeapAlloc(GetProcessHeap(), 0, lineCount * sizeof(png_byte*));
if (!row_pointers)
{
LeaveCriticalSection(&This->lock);
return E_OUTOFMEMORY;
}
for (i=0; i<lineCount; i++)
row_pointers[i] = pbPixels + cbStride * i;
ppng_write_rows(This->png_ptr, row_pointers, lineCount);
This->lines_written += lineCount;
LeaveCriticalSection(&This->lock);
HeapFree(GetProcessHeap(), 0, row_pointers);
return S_OK;
}
static HRESULT WINAPI PngFrameEncode_WriteSource(IWICBitmapFrameEncode *iface,
IWICBitmapSource *pIBitmapSource, WICRect *prc)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr;
TRACE("(%p,%p,%s)\n", iface, pIBitmapSource, debug_wic_rect(prc));
if (!This->frame_initialized)
return WINCODEC_ERR_WRONGSTATE;
hr = configure_write_source(iface, pIBitmapSource, prc,
This->format ? This->format->guid : NULL, This->width, This->height,
This->xres, This->yres);
if (SUCCEEDED(hr))
{
hr = write_source(iface, pIBitmapSource, prc,
This->format->guid, This->format->bpp,
!This->colors && This->format->color_type == PNG_COLOR_TYPE_PALETTE,
This->width, This->height);
}
return hr;
}
static HRESULT WINAPI PngFrameEncode_Commit(IWICBitmapFrameEncode *iface)
{
PngEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
png_byte **row_pointers=NULL;
jmp_buf jmpbuf;
TRACE("(%p)\n", iface);
EnterCriticalSection(&This->lock);
if (!This->info_written || This->lines_written != This->height || This->frame_committed)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
/* set up setjmp/longjmp error handling */
if (setjmp(jmpbuf))
{
LeaveCriticalSection(&This->lock);
HeapFree(GetProcessHeap(), 0, row_pointers);
return E_FAIL;
}
ppng_set_error_fn(This->png_ptr, jmpbuf, user_error_fn, user_warning_fn);
if (This->interlace)
{
int i;
row_pointers = HeapAlloc(GetProcessHeap(), 0, This->height * sizeof(png_byte*));
if (!row_pointers)
{
LeaveCriticalSection(&This->lock);
return E_OUTOFMEMORY;
}
for (i=0; i<This->height; i++)
row_pointers[i] = This->data + This->stride * i;
for (i=0; i<This->passes; i++)
ppng_write_rows(This->png_ptr, row_pointers, This->height);
}
ppng_write_end(This->png_ptr, This->info_ptr);
This->frame_committed = TRUE;
HeapFree(GetProcessHeap(), 0, row_pointers);
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PngFrameEncode_GetMetadataQueryWriter(IWICBitmapFrameEncode *iface,
IWICMetadataQueryWriter **ppIMetadataQueryWriter)
{
FIXME("(%p, %p): stub\n", iface, ppIMetadataQueryWriter);
return E_NOTIMPL;
}
static const IWICBitmapFrameEncodeVtbl PngEncoder_FrameVtbl = {
PngFrameEncode_QueryInterface,
PngFrameEncode_AddRef,
PngFrameEncode_Release,
PngFrameEncode_Initialize,
PngFrameEncode_SetSize,
PngFrameEncode_SetResolution,
PngFrameEncode_SetPixelFormat,
PngFrameEncode_SetColorContexts,
PngFrameEncode_SetPalette,
PngFrameEncode_SetThumbnail,
PngFrameEncode_WritePixels,
PngFrameEncode_WriteSource,
PngFrameEncode_Commit,
PngFrameEncode_GetMetadataQueryWriter
};
static HRESULT WINAPI PngEncoder_QueryInterface(IWICBitmapEncoder *iface, REFIID iid,
void **ppv)
{
PngEncoder *This = impl_from_IWICBitmapEncoder(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICBitmapEncoder, iid))
{
*ppv = &This->IWICBitmapEncoder_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI PngEncoder_AddRef(IWICBitmapEncoder *iface)
{
PngEncoder *This = impl_from_IWICBitmapEncoder(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI PngEncoder_Release(IWICBitmapEncoder *iface)
{
PngEncoder *This = impl_from_IWICBitmapEncoder(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
if (ref == 0)
{
This->lock.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&This->lock);
if (This->png_ptr)
ppng_destroy_write_struct(&This->png_ptr, &This->info_ptr);
if (This->stream)
IStream_Release(This->stream);
HeapFree(GetProcessHeap(), 0, This->data);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static void user_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
PngEncoder *This = ppng_get_io_ptr(png_ptr);
HRESULT hr;
ULONG byteswritten;
hr = IStream_Write(This->stream, data, length, &byteswritten);
if (FAILED(hr) || byteswritten != length)
{
ppng_error(png_ptr, "failed writing data");
}
}
static void user_flush(png_structp png_ptr)
{
}
static HRESULT WINAPI PngEncoder_Initialize(IWICBitmapEncoder *iface,
IStream *pIStream, WICBitmapEncoderCacheOption cacheOption)
{
PngEncoder *This = impl_from_IWICBitmapEncoder(iface);
jmp_buf jmpbuf;
TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOption);
EnterCriticalSection(&This->lock);
if (This->png_ptr)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
/* initialize libpng */
This->png_ptr = ppng_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!This->png_ptr)
{
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
This->info_ptr = ppng_create_info_struct(This->png_ptr);
if (!This->info_ptr)
{
ppng_destroy_write_struct(&This->png_ptr, NULL);
This->png_ptr = NULL;
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
IStream_AddRef(pIStream);
This->stream = pIStream;
/* set up setjmp/longjmp error handling */
if (setjmp(jmpbuf))
{
ppng_destroy_write_struct(&This->png_ptr, &This->info_ptr);
This->png_ptr = NULL;
IStream_Release(This->stream);
This->stream = NULL;
LeaveCriticalSection(&This->lock);
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);
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PngEncoder_GetContainerFormat(IWICBitmapEncoder *iface, GUID *format)
{
TRACE("(%p,%p)\n", iface, format);
if (!format)
return E_INVALIDARG;
memcpy(format, &GUID_ContainerFormatPng, sizeof(*format));
return S_OK;
}
static HRESULT WINAPI PngEncoder_GetEncoderInfo(IWICBitmapEncoder *iface, IWICBitmapEncoderInfo **info)
{
IWICComponentInfo *comp_info;
HRESULT hr;
TRACE("%p,%p\n", iface, info);
if (!info) return E_INVALIDARG;
hr = CreateComponentInfo(&CLSID_WICPngEncoder, &comp_info);
if (hr == S_OK)
{
hr = IWICComponentInfo_QueryInterface(comp_info, &IID_IWICBitmapEncoderInfo, (void **)info);
IWICComponentInfo_Release(comp_info);
}
return hr;
}
static HRESULT WINAPI PngEncoder_SetColorContexts(IWICBitmapEncoder *iface,
UINT cCount, IWICColorContext **ppIColorContext)
{
FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
return E_NOTIMPL;
}
static HRESULT WINAPI PngEncoder_SetPalette(IWICBitmapEncoder *iface, IWICPalette *palette)
{
PngEncoder *This = impl_from_IWICBitmapEncoder(iface);
HRESULT hr;
TRACE("(%p,%p)\n", iface, palette);
EnterCriticalSection(&This->lock);
hr = This->stream ? WINCODEC_ERR_UNSUPPORTEDOPERATION : WINCODEC_ERR_NOTINITIALIZED;
LeaveCriticalSection(&This->lock);
return hr;
}
static HRESULT WINAPI PngEncoder_SetThumbnail(IWICBitmapEncoder *iface, IWICBitmapSource *pIThumbnail)
{
TRACE("(%p,%p)\n", iface, pIThumbnail);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI PngEncoder_SetPreview(IWICBitmapEncoder *iface, IWICBitmapSource *pIPreview)
{
TRACE("(%p,%p)\n", iface, pIPreview);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI PngEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
IWICBitmapFrameEncode **ppIFrameEncode, IPropertyBag2 **ppIEncoderOptions)
{
PngEncoder *This = impl_from_IWICBitmapEncoder(iface);
HRESULT hr;
static const PROPBAG2 opts[2] =
{
{ PROPBAG2_TYPE_DATA, VT_BOOL, 0, 0, (LPOLESTR)wszPngInterlaceOption },
{ PROPBAG2_TYPE_DATA, VT_UI1, 0, 0, (LPOLESTR)wszPngFilterOption },
};
TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
EnterCriticalSection(&This->lock);
if (This->frame_count != 0)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
if (!This->stream)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_NOTINITIALIZED;
}
if (ppIEncoderOptions)
{
hr = CreatePropertyBag2(opts, ARRAY_SIZE(opts), ppIEncoderOptions);
if (FAILED(hr))
{
LeaveCriticalSection(&This->lock);
return hr;
}
}
This->frame_count = 1;
LeaveCriticalSection(&This->lock);
IWICBitmapEncoder_AddRef(iface);
*ppIFrameEncode = &This->IWICBitmapFrameEncode_iface;
return S_OK;
}
static HRESULT WINAPI PngEncoder_Commit(IWICBitmapEncoder *iface)
{
PngEncoder *This = impl_from_IWICBitmapEncoder(iface);
TRACE("(%p)\n", iface);
EnterCriticalSection(&This->lock);
if (!This->frame_committed || This->committed)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
This->committed = TRUE;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PngEncoder_GetMetadataQueryWriter(IWICBitmapEncoder *iface,
IWICMetadataQueryWriter **ppIMetadataQueryWriter)
{
FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryWriter);
return E_NOTIMPL;
}
static const IWICBitmapEncoderVtbl PngEncoder_Vtbl = {
PngEncoder_QueryInterface,
PngEncoder_AddRef,
PngEncoder_Release,
PngEncoder_Initialize,
PngEncoder_GetContainerFormat,
PngEncoder_GetEncoderInfo,
PngEncoder_SetColorContexts,
PngEncoder_SetPalette,
PngEncoder_SetThumbnail,
PngEncoder_SetPreview,
PngEncoder_CreateNewFrame,
PngEncoder_Commit,
PngEncoder_GetMetadataQueryWriter
};
HRESULT PngEncoder_CreateInstance(REFIID iid, void** ppv)
{
PngEncoder *This;
HRESULT ret;
TRACE("(%s,%p)\n", debugstr_guid(iid), ppv);
*ppv = NULL;
if (!load_libpng())
{
ERR("Failed writing PNG because unable to find %s\n",SONAME_LIBPNG);
return E_FAIL;
}
This = HeapAlloc(GetProcessHeap(), 0, sizeof(PngEncoder));
if (!This) return E_OUTOFMEMORY;
This->IWICBitmapEncoder_iface.lpVtbl = &PngEncoder_Vtbl;
This->IWICBitmapFrameEncode_iface.lpVtbl = &PngEncoder_FrameVtbl;
This->ref = 1;
This->png_ptr = NULL;
This->info_ptr = NULL;
This->stream = NULL;
This->frame_count = 0;
This->frame_initialized = FALSE;
This->format = NULL;
This->info_written = FALSE;
This->width = 0;
This->height = 0;
This->xres = 0.0;
This->yres = 0.0;
This->lines_written = 0;
This->frame_committed = FALSE;
This->committed = FALSE;
This->data = NULL;
This->colors = 0;
InitializeCriticalSection(&This->lock);
This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": PngEncoder.lock");
ret = IWICBitmapEncoder_QueryInterface(&This->IWICBitmapEncoder_iface, iid, ppv);
IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
return ret;
}
#else /* !SONAME_LIBPNG */
HRESULT PngEncoder_CreateInstance(REFIID iid, void** ppv)
{
ERR("Trying to save PNG picture, but PNG support is not compiled in.\n");
return E_FAIL;
}
#endif
HRESULT PngDecoder_CreateInstance(REFIID iid, void** ppv)
{
HRESULT hr;
struct decoder *decoder;
struct decoder_info decoder_info;
hr = get_unix_decoder(&CLSID_WICPngDecoder, &decoder_info, &decoder);
if (SUCCEEDED(hr))
hr = CommonDecoder_CreateInstance(decoder, &decoder_info, iid, ppv);
return hr;
}
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