39 static void SnapTopLeftPosition(const WebPPicture* const pic,  in SnapTopLeftPosition()  argument
41   if (!pic->use_argb) {  in SnapTopLeftPosition()
48 static int AdjustAndCheckRectangle(const WebPPicture* const pic,  in AdjustAndCheckRectangle()  argument
51   SnapTopLeftPosition(pic, left, top);  in AdjustAndCheckRectangle()
54   if ((*left) + width > pic->width) return 0;  in AdjustAndCheckRectangle()
55   if ((*top) + height > pic->height) return 0;  in AdjustAndCheckRectangle()
126 int WebPPictureCrop(WebPPicture* pic,  in WebPPictureCrop()  argument
130   if (pic == NULL) return 0;  in WebPPictureCrop()
131   if (!AdjustAndCheckRectangle(pic, &left, &top, width, height)) return 0;  in WebPPictureCrop()
133   PictureGrabSpecs(pic, &tmp);  in WebPPictureCrop()
138   if (!pic->use_argb) {  in WebPPictureCrop()
139     const int y_offset = top * pic->y_stride + left;  in WebPPictureCrop()
140     const int uv_offset = (top / 2) * pic->uv_stride + left / 2;  in WebPPictureCrop()
141     WebPCopyPlane(pic->y + y_offset, pic->y_stride,  in WebPPictureCrop()
143     WebPCopyPlane(pic->u + uv_offset, pic->uv_stride,  in WebPPictureCrop()
145     WebPCopyPlane(pic->v + uv_offset, pic->uv_stride,  in WebPPictureCrop()
149       const int a_offset = top * pic->a_stride + left;  in WebPPictureCrop()
150       WebPCopyPlane(pic->a + a_offset, pic->a_stride,  in WebPPictureCrop()
155         (const uint8_t*)(pic->argb + top * pic->argb_stride + left);  in WebPPictureCrop()
156     WebPCopyPlane(src, pic->argb_stride * 4, (uint8_t*)tmp.argb,  in WebPPictureCrop()
159   WebPPictureFree(pic);  in WebPPictureCrop()
160   *pic = tmp;  in WebPPictureCrop()
185 static void AlphaMultiplyARGB(WebPPicture* const pic, int inverse) {  in AlphaMultiplyARGB()  argument
186   assert(pic->argb != NULL);  in AlphaMultiplyARGB()
187   WebPMultARGBRows((uint8_t*)pic->argb, pic->argb_stride * sizeof(*pic->argb),  in AlphaMultiplyARGB()
188                    pic->width, pic->height, inverse);  in AlphaMultiplyARGB()
191 static void AlphaMultiplyY(WebPPicture* const pic, int inverse) {  in AlphaMultiplyY()  argument
192   if (pic->a != NULL) {  in AlphaMultiplyY()
193     WebPMultRows(pic->y, pic->y_stride, pic->a, pic->a_stride,  in AlphaMultiplyY()
194                  pic->width, pic->height, inverse);  in AlphaMultiplyY()
198 int WebPPictureRescale(WebPPicture* pic, int width, int height) {  in WebPPictureRescale()  argument
203   if (pic == NULL) return 0;  in WebPPictureRescale()
204   prev_width = pic->width;  in WebPPictureRescale()
205   prev_height = pic->height;  in WebPPictureRescale()
211   PictureGrabSpecs(pic, &tmp);  in WebPPictureRescale()
216   if (!pic->use_argb) {  in WebPPictureRescale()
223     if (pic->a != NULL) {  in WebPPictureRescale()
225       RescalePlane(pic->a, prev_width, prev_height, pic->a_stride,  in WebPPictureRescale()
231     AlphaMultiplyY(pic, 0);  in WebPPictureRescale()
232     RescalePlane(pic->y, prev_width, prev_height, pic->y_stride,  in WebPPictureRescale()
236     RescalePlane(pic->u,  in WebPPictureRescale()
237                  HALVE(prev_width), HALVE(prev_height), pic->uv_stride,  in WebPPictureRescale()
240     RescalePlane(pic->v,  in WebPPictureRescale()
241                  HALVE(prev_width), HALVE(prev_height), pic->uv_stride,  in WebPPictureRescale()
254     AlphaMultiplyARGB(pic, 0);  in WebPPictureRescale()
255     RescalePlane((const uint8_t*)pic->argb, prev_width, prev_height,  in WebPPictureRescale()
256                  pic->argb_stride * 4,  in WebPPictureRescale()
262   WebPPictureFree(pic);  in WebPPictureRescale()
264   *pic = tmp;  in WebPPictureRescale()
293 int WebPPictureCrop(WebPPicture* pic,  in WebPPictureCrop()  argument
295   (void)pic;  in WebPPictureCrop()
303 int WebPPictureRescale(WebPPicture* pic, int width, int height) {  in WebPPictureRescale()  argument
304   (void)pic;  in WebPPictureRescale()