539                       const WebPPicture* const curr_canvas, int is_key_frame,  in GetSubRect()  argument
547     MinimizeChangeRectangle(prev_canvas, curr_canvas, rect,  in GetSubRect()
563   return WebPPictureView(curr_canvas, rect->x_offset_, rect->y_offset_,  in GetSubRect()
570                        const WebPPicture* const curr_canvas, int is_key_frame,  in GetSubRects()  argument
576   params->rect_ll_.width_ = curr_canvas->width;  in GetSubRects()
577   params->rect_ll_.height_ = curr_canvas->height;  in GetSubRects()
578   if (!GetSubRect(prev_canvas, curr_canvas, is_key_frame, is_first_frame,  in GetSubRects()
585   return GetSubRect(prev_canvas, curr_canvas, is_key_frame, is_first_frame,  in GetSubRects()
595     const WebPPicture* const prev_canvas, const WebPPicture* const curr_canvas,  in WebPAnimEncoderRefineRect()  argument
599   const int right = clip(*x_offset + *width, 0, curr_canvas->width);  in WebPAnimEncoderRefineRect()
600   const int left = clip(*x_offset, 0, curr_canvas->width - 1);  in WebPAnimEncoderRefineRect()
601   const int bottom = clip(*y_offset + *height, 0, curr_canvas->height);  in WebPAnimEncoderRefineRect()
602   const int top = clip(*y_offset, 0, curr_canvas->height - 1);  in WebPAnimEncoderRefineRect()
603   if (prev_canvas == NULL || curr_canvas == NULL ||  in WebPAnimEncoderRefineRect()
604       prev_canvas->width != curr_canvas->width ||  in WebPAnimEncoderRefineRect()
605       prev_canvas->height != curr_canvas->height ||  in WebPAnimEncoderRefineRect()
606       !prev_canvas->use_argb || !curr_canvas->use_argb) {  in WebPAnimEncoderRefineRect()
611   rect.width_ = clip(right - left, 0, curr_canvas->width - rect.x_offset_);  in WebPAnimEncoderRefineRect()
612   rect.height_ = clip(bottom - top, 0, curr_canvas->height - rect.y_offset_);  in WebPAnimEncoderRefineRect()
613   MinimizeChangeRectangle(prev_canvas, curr_canvas, &rect, is_lossless,  in WebPAnimEncoderRefineRect()
625                                   WebPPicture* const curr_canvas) {  in DisposeFrameRectangle()  argument
628     WebPUtilClearPic(curr_canvas, rect);  in DisposeFrameRectangle()
863   WebPPicture* const curr_canvas = &enc->curr_canvas_copy_;  in GenerateCandidates()  local
872       IsLosslessBlendingPossible(prev_canvas, curr_canvas, &params->rect_ll_);  in GenerateCandidates()
875       IsLossyBlendingPossible(prev_canvas, curr_canvas, &params->rect_lossy_,  in GenerateCandidates()
896           IncreaseTransparency(prev_canvas, &params->rect_ll_, curr_canvas);  in GenerateCandidates()
906           FlattenSimilarBlocks(prev_canvas, &params->rect_lossy_, curr_canvas,  in GenerateCandidates()
1065   const WebPPicture* const curr_canvas = &enc->curr_canvas_copy_;  in SetFrame()  local
1111   if (!GetSubRects(prev_canvas, curr_canvas, is_key_frame, is_first_frame,  in SetFrame()
1133     if (!GetSubRects(prev_canvas_disposed, curr_canvas, is_key_frame,  in SetFrame()