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@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