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 #include "wincodec.h"
  29
  30 #include "wincodecs_private.h"
  31
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  35
  36 typedef struct FlipRotator {
  37     IWICBitmapFlipRotator IWICBitmapFlipRotator_iface;
  38     LONG ref;
  39     IWICBitmapSource *source;
  40     int flip_x;
  41     int flip_y;
  42     int swap_xy;
  43     CRITICAL_SECTION lock; /* must be held when initialized */
  44 } FlipRotator;
  45
  46 static inline FlipRotator *impl_from_IWICBitmapFlipRotator(IWICBitmapFlipRotator *iface)
  47 {
  48     return CONTAINING_RECORD(iface, FlipRotator, IWICBitmapFlipRotator_iface);
  49 }
  50
  51 static HRESULT WINAPI FlipRotator_QueryInterface(IWICBitmapFlipRotator *iface, REFIID iid,
  52     void **ppv)
  53 {
  54     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
  55     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  56
  57     if (!ppv) return E_INVALIDARG;
  58
  59     if (IsEqualIID(&IID_IUnknown, iid) ||
  60         IsEqualIID(&IID_IWICBitmapSource, iid) ||
  61         IsEqualIID(&IID_IWICBitmapFlipRotator, iid))
  62     {
  63         *ppv = This;
  64     }
  65     else
  66     {
  67         *ppv = NULL;
  68         return E_NOINTERFACE;
  69     }
  70
  71     IUnknown_AddRef((IUnknown*)*ppv);
  72     return S_OK;
  73 }
  74
  75 static ULONG WINAPI FlipRotator_AddRef(IWICBitmapFlipRotator *iface)
  76 {
  77     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
  78     ULONG ref = InterlockedIncrement(&This->ref);
  79
  80     TRACE("(%p) refcount=%u\n", iface, ref);
  81
  82     return ref;
  83 }
  84
  85 static ULONG WINAPI FlipRotator_Release(IWICBitmapFlipRotator *iface)
  86 {
  87     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
  88     ULONG ref = InterlockedDecrement(&This->ref);
  89
  90     TRACE("(%p) refcount=%u\n", iface, ref);
  91
  92     if (ref == 0)
  93     {
  94         This->lock.DebugInfo->Spare[0] = 0;
  95         DeleteCriticalSection(&This->lock);
  96         if (This->source) IWICBitmapSource_Release(This->source);
  97         HeapFree(GetProcessHeap(), 0, This);
  98     }
  99
 100     return ref;
 101 }
 102
 103 static HRESULT WINAPI FlipRotator_GetSize(IWICBitmapFlipRotator *iface,
 104     UINT *puiWidth, UINT *puiHeight)
 105 {
 106     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 107     TRACE("(%p,%p,%p)\n", iface, puiWidth, puiHeight);
 108
 109     if (!This->source)
 110         return WINCODEC_ERR_WRONGSTATE;
 111     else if (This->swap_xy)
 112         return IWICBitmapSource_GetSize(This->source, puiHeight, puiWidth);
 113     else
 114         return IWICBitmapSource_GetSize(This->source, puiWidth, puiHeight);
 115 }
 116
 117 static HRESULT WINAPI FlipRotator_GetPixelFormat(IWICBitmapFlipRotator *iface,
 118     WICPixelFormatGUID *pPixelFormat)
 119 {
 120     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 121     TRACE("(%p,%p)\n", iface, pPixelFormat);
 122
 123     if (!This->source)
 124         return WINCODEC_ERR_WRONGSTATE;
 125     else
 126         return IWICBitmapSource_GetPixelFormat(This->source, pPixelFormat);
 127 }
 128
 129 static HRESULT WINAPI FlipRotator_GetResolution(IWICBitmapFlipRotator *iface,
 130     double *pDpiX, double *pDpiY)
 131 {
 132     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 133     TRACE("(%p,%p,%p)\n", iface, pDpiX, pDpiY);
 134
 135     if (!This->source)
 136         return WINCODEC_ERR_WRONGSTATE;
 137     else if (This->swap_xy)
 138         return IWICBitmapSource_GetResolution(This->source, pDpiY, pDpiX);
 139     else
 140         return IWICBitmapSource_GetResolution(This->source, pDpiX, pDpiY);
 141 }
 142
 143 static HRESULT WINAPI FlipRotator_CopyPalette(IWICBitmapFlipRotator *iface,
 144     IWICPalette *pIPalette)
 145 {
 146     FIXME("(%p,%p): stub\n", iface, pIPalette);
 147     return E_NOTIMPL;
 148 }
 149
 150 static HRESULT WINAPI FlipRotator_CopyPixels(IWICBitmapFlipRotator *iface,
 151     const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
 152 {
 153     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 154     HRESULT hr;
 155     UINT y;
 156     UINT srcy, srcwidth, srcheight;
 157     WICRect rc;
 158     WICRect rect;
 159
 160     TRACE("(%p,%p,%u,%u,%p)\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
 161
 162     if (!This->source) return WINCODEC_ERR_WRONGSTATE;
 163
 164     if (This->swap_xy || This->flip_x)
 165     {
 166         /* This requires knowledge of the pixel format. */
 167         FIXME("flipping x and rotating are not implemented\n");
 168         return E_NOTIMPL;
 169     }
 170
 171     hr = IWICBitmapSource_GetSize(This->source, &srcwidth, &srcheight);
 172     if (FAILED(hr)) return hr;
 173
 174     if (!prc)
 175     {
 176         UINT width, height;
 177         hr = IWICBitmapSource_GetSize(iface, &width, &height);
 178         if (FAILED(hr)) return hr;
 179         rect.X = 0;
 180         rect.Y = 0;
 181         rect.Width = width;
 182         rect.Height = height;
 183         prc = &rect;
 184     }
 185
 186     for (y=prc->Y; y - prc->Y < prc->Height; y++)
 187     {
 188         if (This->flip_y)
 189             srcy = srcheight - 1 - y;
 190         else
 191             srcy = y;
 192
 193         rc.X = prc->X;
 194         rc.Y = srcy;
 195         rc.Width = prc->Width;
 196         rc.Height = 1;
 197
 198         hr = IWICBitmapSource_CopyPixels(This->source, &rc, cbStride, cbStride,
 199             pbBuffer);
 200
 201         if (FAILED(hr)) break;
 202
 203         pbBuffer += cbStride;
 204     }
 205
 206     return hr;
 207 }
 208
 209 static HRESULT WINAPI FlipRotator_Initialize(IWICBitmapFlipRotator *iface,
 210     IWICBitmapSource *pISource, WICBitmapTransformOptions options)
 211 {
 212     FlipRotator *This = impl_from_IWICBitmapFlipRotator(iface);
 213     HRESULT hr=S_OK;
 214
 215     TRACE("(%p,%p,%u)\n", iface, pISource, options);
 216
 217     EnterCriticalSection(&This->lock);
 218
 219     if (This->source)
 220     {
 221         hr = WINCODEC_ERR_WRONGSTATE;
 222         goto end;
 223     }
 224
 225     if (options&WICBitmapTransformRotate90)
 226     {
 227         This->swap_xy = 1;
 228         This->flip_x = !This->flip_x;
 229     }
 230
 231     if (options&WICBitmapTransformRotate180)
 232     {
 233         This->flip_x = !This->flip_x;
 234         This->flip_y = !This->flip_y;
 235     }
 236
 237     if (options&WICBitmapTransformFlipHorizontal)
 238         This->flip_x = !This->flip_x;
 239
 240     if (options&WICBitmapTransformFlipVertical)
 241         This->flip_y = !This->flip_y;
 242
 243     IWICBitmapSource_AddRef(pISource);
 244     This->source = pISource;
 245
 246 end:
 247     LeaveCriticalSection(&This->lock);
 248
 249     return hr;
 250 }
 251
 252 static const IWICBitmapFlipRotatorVtbl FlipRotator_Vtbl = {
 253     FlipRotator_QueryInterface,
 254     FlipRotator_AddRef,
 255     FlipRotator_Release,
 256     FlipRotator_GetSize,
 257     FlipRotator_GetPixelFormat,
 258     FlipRotator_GetResolution,
 259     FlipRotator_CopyPalette,
 260     FlipRotator_CopyPixels,
 261     FlipRotator_Initialize
 262 };
 263
 264 HRESULT FlipRotator_Create(IWICBitmapFlipRotator **fliprotator)
 265 {
 266     FlipRotator *This;
 267
 268     This = HeapAlloc(GetProcessHeap(), 0, sizeof(FlipRotator));
 269     if (!This) return E_OUTOFMEMORY;
 270
 271     This->IWICBitmapFlipRotator_iface.lpVtbl = &FlipRotator_Vtbl;
 272     This->ref = 1;
 273     This->source = NULL;
 274     This->flip_x = 0;
 275     This->flip_y = 0;
 276     This->swap_xy = 0;
 277     InitializeCriticalSection(&This->lock);
 278     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": FlipRotator.lock");
 279
 280     *fliprotator = &This->IWICBitmapFlipRotator_iface;
 281
 282     return S_OK;
 283 }