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,%s,%u,%u,%p)\n", iface, debug_wic_rect(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 }
288