dlls/windowscodecs/fliprotate.c

   1 /*
   2  * Copyright 2010 Vincent Povirk for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20
  21 #include <stdarg.h>
  22
  23 #define COBJMACROS
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "objbase.h"
  28
  29 #include "wincodecs_private.h"
  30
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  34
  35 typedef struct FlipRotator {
  36     IWICBitmapFlipRotator IWICBitmapFlipRotator_iface;
  37     LONG ref;
  38     IWICBitmapSource *source;
  39     int flip_x;
  40     int flip_y;
  41     int swap_xy;
  42     CRITICAL_SECTION lock; /* must be held when initialized */
  43 } FlipRotator;
  44
  45 static inline FlipRotator *impl_from_IWICBitmapFlipRotator(IWICBitmapFlipRotator *iface)
  46 {
  47     return CONTAINING_RECORD(iface, FlipRotator, IWICBitmapFlipRotator_iface);
  48 }
  49
  50 static HRESULT WINAPI FlipRotator_QueryInterface(IWICBitmapFlipRotator *iface, REFIID iid,
  51     void **ppv)
  52 {
  53     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
  54     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  55
  56     if (!ppv) return E_INVALIDARG;
  57
  58     if (IsEqualIID(&IID_IUnknown, iid) ||
  59         IsEqualIID(&IID_IWICBitmapSource, iid) ||
  60         IsEqualIID(&IID_IWICBitmapFlipRotator, iid))
  61     {
  62         *ppv = &This->IWICBitmapFlipRotator_iface;
  63     }
  64     else
  65     {
  66         *ppv = NULL;
  67         return E_NOINTERFACE;
  68     }
  69
  70     IUnknown_AddRef((IUnknown*)*ppv);
  71     return S_OK;
  72 }
  73
  74 static ULONG WINAPI FlipRotator_AddRef(IWICBitmapFlipRotator *iface)
  75 {
  76     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
  77     ULONG ref = InterlockedIncrement(&This->ref);
  78
  79     TRACE("(%p) refcount=%u\n", iface, ref);
  80
  81     return ref;
  82 }
  83
  84 static ULONG WINAPI FlipRotator_Release(IWICBitmapFlipRotator *iface)
  85 {
  86     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
  87     ULONG ref = InterlockedDecrement(&This->ref);
  88
  89     TRACE("(%p) refcount=%u\n", iface, ref);
  90
  91     if (ref == 0)
  92     {
  93         This->lock.DebugInfo->Spare[0] = 0;
  94         DeleteCriticalSection(&This->lock);
  95         if (This->source) IWICBitmapSource_Release(This->source);
  96         HeapFree(GetProcessHeap(), 0, This);
  97     }
  98
  99     return ref;
 100 }
 101
 102 static HRESULT WINAPI FlipRotator_GetSize(IWICBitmapFlipRotator *iface,
 103     UINT *puiWidth, UINT *puiHeight)
 104 {
 105     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 106     TRACE("(%p,%p,%p)\n", iface, puiWidth, puiHeight);
 107
 108     if (!This->source)
 109         return WINCODEC_ERR_WRONGSTATE;
 110     else if (This->swap_xy)
 111         return IWICBitmapSource_GetSize(This->source, puiHeight, puiWidth);
 112     else
 113         return IWICBitmapSource_GetSize(This->source, puiWidth, puiHeight);
 114 }
 115
 116 static HRESULT WINAPI FlipRotator_GetPixelFormat(IWICBitmapFlipRotator *iface,
 117     WICPixelFormatGUID *pPixelFormat)
 118 {
 119     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 120     TRACE("(%p,%p)\n", iface, pPixelFormat);
 121
 122     if (!This->source)
 123         return WINCODEC_ERR_WRONGSTATE;
 124     else
 125         return IWICBitmapSource_GetPixelFormat(This->source, pPixelFormat);
 126 }
 127
 128 static HRESULT WINAPI FlipRotator_GetResolution(IWICBitmapFlipRotator *iface,
 129     double *pDpiX, double *pDpiY)
 130 {
 131     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 132     TRACE("(%p,%p,%p)\n", iface, pDpiX, pDpiY);
 133
 134     if (!This->source)
 135         return WINCODEC_ERR_WRONGSTATE;
 136     else if (This->swap_xy)
 137         return IWICBitmapSource_GetResolution(This->source, pDpiY, pDpiX);
 138     else
 139         return IWICBitmapSource_GetResolution(This->source, pDpiX, pDpiY);
 140 }
 141
 142 static HRESULT WINAPI FlipRotator_CopyPalette(IWICBitmapFlipRotator *iface,
 143     IWICPalette *pIPalette)
 144 {
 145     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 146     TRACE("(%p,%p)\n", iface, pIPalette);
 147
 148     if (!This->source)
 149         return WINCODEC_ERR_WRONGSTATE;
 150     else
 151         return IWICBitmapSource_CopyPalette(This->source, pIPalette);
 152 }
 153
 154 static HRESULT WINAPI FlipRotator_CopyPixels(IWICBitmapFlipRotator *iface,
 155     const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
 156 {
 157     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 158     HRESULT hr;
 159     UINT y;
 160     UINT srcy, srcwidth, srcheight;
 161     WICRect rc;
 162     WICRect rect;
 163
 164     TRACE("(%p,%p,%u,%u,%p)\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
 165
 166     if (!This->source) return WINCODEC_ERR_WRONGSTATE;
 167
 168     if (This->swap_xy || This->flip_x)
 169     {
 170         /* This requires knowledge of the pixel format. */
 171         FIXME("flipping x and rotating are not implemented\n");
 172         return E_NOTIMPL;
 173     }
 174
 175     hr = IWICBitmapSource_GetSize(This->source, &srcwidth, &srcheight);
 176     if (FAILED(hr)) return hr;
 177
 178     if (!prc)
 179     {
 180         UINT width, height;
 181         hr = IWICBitmapFlipRotator_GetSize(iface, &width, &height);
 182         if (FAILED(hr)) return hr;
 183         rect.X = 0;
 184         rect.Y = 0;
 185         rect.Width = width;
 186         rect.Height = height;
 187         prc = &rect;
 188     }
 189
 190     for (y=prc->Y; y - prc->Y < prc->Height; y++)
 191     {
 192         if (This->flip_y)
 193             srcy = srcheight - 1 - y;
 194         else
 195             srcy = y;
 196
 197         rc.X = prc->X;
 198         rc.Y = srcy;
 199         rc.Width = prc->Width;
 200         rc.Height = 1;
 201
 202         hr = IWICBitmapSource_CopyPixels(This->source, &rc, cbStride, cbStride,
 203             pbBuffer);
 204
 205         if (FAILED(hr)) break;
 206
 207         pbBuffer += cbStride;
 208     }
 209
 210     return hr;
 211 }
 212
 213 static HRESULT WINAPI FlipRotator_Initialize(IWICBitmapFlipRotator *iface,
 214     IWICBitmapSource *pISource, WICBitmapTransformOptions options)
 215 {
 216     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 217     HRESULT hr=S_OK;
 218
 219     TRACE("(%p,%p,%u)\n", iface, pISource, options);
 220
 221     EnterCriticalSection(&This->lock);
 222
 223     if (This->source)
 224     {
 225         hr = WINCODEC_ERR_WRONGSTATE;
 226         goto end;
 227     }
 228
 229     if (options&WICBitmapTransformRotate90)
 230     {
 231         This->swap_xy = 1;
 232         This->flip_x = !This->flip_x;
 233     }
 234
 235     if (options&WICBitmapTransformRotate180)
 236     {
 237         This->flip_x = !This->flip_x;
 238         This->flip_y = !This->flip_y;
 239     }
 240
 241     if (options&WICBitmapTransformFlipHorizontal)
 242         This->flip_x = !This->flip_x;
 243
 244     if (options&WICBitmapTransformFlipVertical)
 245         This->flip_y = !This->flip_y;
 246
 247     IWICBitmapSource_AddRef(pISource);
 248     This->source = pISource;
 249
 250 end:
 251     LeaveCriticalSection(&This->lock);
 252
 253     return hr;
 254 }
 255
 256 static const IWICBitmapFlipRotatorVtbl FlipRotator_Vtbl = {
 257     FlipRotator_QueryInterface,
 258     FlipRotator_AddRef,
 259     FlipRotator_Release,
 260     FlipRotator_GetSize,
 261     FlipRotator_GetPixelFormat,
 262     FlipRotator_GetResolution,
 263     FlipRotator_CopyPalette,
 264     FlipRotator_CopyPixels,
 265     FlipRotator_Initialize
 266 };
 267
 268 HRESULT FlipRotator_Create(IWICBitmapFlipRotator **fliprotator)
 269 {
 270     FlipRotator *This;
 271
 272     This = HeapAlloc(GetProcessHeap(), 0, sizeof(FlipRotator));
 273     if (!This) return E_OUTOFMEMORY;
 274
 275     This->IWICBitmapFlipRotator_iface.lpVtbl = &FlipRotator_Vtbl;
 276     This->ref = 1;
 277     This->source = NULL;
 278     This->flip_x = 0;
 279     This->flip_y = 0;
 280     This->swap_xy = 0;
 281     InitializeCriticalSection(&This->lock);
 282     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": FlipRotator.lock");
 283
 284     *fliprotator = &This->IWICBitmapFlipRotator_iface;
 285
 286     return S_OK;
 287 }