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      1 /*
      2  * blender.h - blender interface
      3  *
      4  *  Copyright (c) 2017 Intel Corporation
      5  *
      6  * Licensed under the Apache License, Version 2.0 (the "License");
      7  * you may not use this file except in compliance with the License.
      8  * You may obtain a copy of the License at
      9  *
     10  *      http://www.apache.org/licenses/LICENSE-2.0
     11  *
     12  * Unless required by applicable law or agreed to in writing, software
     13  * distributed under the License is distributed on an "AS IS" BASIS,
     14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15  * See the License for the specific language governing permissions and
     16  * limitations under the License.
     17  *
     18  * Author: Wind Yuan <feng.yuan (at) intel.com>
     19  */
     20 
     21 #include "blender.h"
     22 
     23 namespace XCam {
     24 
     25 Blender::Blender (uint32_t alignment_x, uint32_t alignment_y)
     26     : _alignment_x (alignment_x)
     27     , _alignment_y (alignment_y)
     28     , _out_width (0)
     29     , _out_height (0)
     30 {
     31 }
     32 
     33 Blender::~Blender ()
     34 {
     35 }
     36 
     37 void
     38 Blender::set_output_size (uint32_t width, uint32_t height) {
     39     _out_width = XCAM_ALIGN_UP (width, get_alignment_x ());
     40     _out_height = XCAM_ALIGN_UP (height, get_alignment_y ());
     41 }
     42 
     43 bool
     44 Blender::set_merge_window (const Rect &window) {
     45     uint32_t alignmend_x = get_alignment_x ();
     46 
     47     _merge_window = window;
     48     _merge_window.pos_x = XCAM_ALIGN_AROUND (_merge_window.pos_x, alignmend_x);
     49     _merge_window.width = XCAM_ALIGN_AROUND (_merge_window.width, alignmend_x);
     50     XCAM_ASSERT (_merge_window.width >= (int32_t)alignmend_x);
     51     XCAM_LOG_DEBUG(
     52         "Blender merge window:(x:%d, width:%d), blend_width:%d",
     53         _merge_window.pos_x, _merge_window.width, _out_width);
     54     return true;
     55 }
     56 
     57 bool
     58 Blender::set_input_valid_area (const Rect &area, uint32_t index)
     59 {
     60     XCAM_ASSERT (index < XCAM_BLENDER_IMAGE_NUM);
     61     _input_valid_area[index] = area;
     62 
     63     uint32_t alignmend_x = get_alignment_x ();
     64     _input_valid_area[index].pos_x = XCAM_ALIGN_DOWN (_input_valid_area[index].pos_x, alignmend_x);
     65     _input_valid_area[index].width = XCAM_ALIGN_UP (_input_valid_area[index].width, alignmend_x);
     66 
     67     XCAM_LOG_DEBUG(
     68         "Blender buf(%d) valid area:(x:%d, width:%d)",
     69         index, _input_valid_area[index].pos_x, _input_valid_area[index].width);
     70     return true;
     71 }
     72 
     73 bool
     74 Blender::set_input_merge_area (const Rect &area, uint32_t index)
     75 {
     76     XCAM_ASSERT (index < XCAM_BLENDER_IMAGE_NUM);
     77     if (!is_merge_window_set ()) {
     78         XCAM_LOG_ERROR ("set_input_merge_area(idx:%d) failed, need set merge window first", index);
     79         return false;
     80     }
     81 
     82     _input_merge_area[index] = area;
     83     _input_merge_area[index].pos_x = XCAM_ALIGN_AROUND (_input_merge_area[index].pos_x, get_alignment_x ());
     84     _input_merge_area[index].pos_y = XCAM_ALIGN_AROUND (_input_merge_area[index].pos_y, get_alignment_y ());
     85 
     86     XCAM_LOG_DEBUG(
     87         "Blender buf(%d) merge area:(x:%d, width:%d)",
     88         index, _input_merge_area[index].pos_x, _input_merge_area[index].width);
     89 
     90     return true;
     91 }
     92 
     93 bool
     94 Blender::auto_calc_merge_window (
     95     uint32_t width0, uint32_t width1, uint32_t blend_width,
     96     Rect &out_window)
     97 {
     98     out_window.pos_x = blend_width - width1;
     99     out_window.width = (width0 + width1 - blend_width) / 2;
    100 
    101     out_window.pos_x = XCAM_ALIGN_AROUND (out_window.pos_x, get_alignment_x ());
    102     out_window.width = XCAM_ALIGN_AROUND (out_window.width, get_alignment_x ());
    103     if ((int)blend_width < out_window.pos_x + out_window.width)
    104         out_window.width = blend_width - out_window.pos_x;
    105 
    106     XCAM_ASSERT (out_window.width > 0 && out_window.width <= (int)blend_width);
    107     XCAM_ASSERT (out_window.pos_x >= 0 && out_window.pos_x <= (int)blend_width);
    108 
    109     return true;
    110 }
    111 
    112 XCamReturn
    113 Blender::blend (
    114     const SmartPtr<VideoBuffer> &,
    115     const SmartPtr<VideoBuffer> &,
    116     SmartPtr<VideoBuffer> &)
    117 {
    118     XCAM_LOG_ERROR ("Blender interface blend must be derived.");
    119     return XCAM_RETURN_ERROR_UNKNOWN;
    120 }
    121 
    122 }
    123