hwc_utils.cpp revision 0c8b7b5c841a7fad5df11b7e02d7cd792cfcc734 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012, Code Aurora Forum. All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18#include "hwc_utils.h"
19#include "mdp_version.h"
20#include "hwc_video.h"
21#include "hwc_ext_observer.h"
22namespace qhwc {
23void initContext(hwc_context_t *ctx)
24{
25    //XXX: target specific initializations here
26    openFramebufferDevice(ctx);
27    ctx->mOverlay = overlay::Overlay::getInstance();
28    ctx->qbuf = new QueuedBufferStore();
29    ctx->mdpVersion = qdutils::MDPVersion::getInstance().getMDPVersion();
30    ctx->hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
31    ALOGI("MDP version: %d",ctx->mdpVersion);
32
33    ctx->mExtDisplayObserver = ExtDisplayObserver::getInstance();
34    ctx->mExtDisplayObserver->setHwcContext(ctx);
35}
36
37void closeContext(hwc_context_t *ctx)
38{
39    if(ctx->mOverlay) {
40        delete ctx->mOverlay;
41        ctx->mOverlay = NULL;
42    }
43
44    if(ctx->fbDev) {
45        framebuffer_close(ctx->fbDev);
46        ctx->fbDev = NULL;
47    }
48
49    if(ctx->qbuf) {
50        delete ctx->qbuf;
51        ctx->qbuf = NULL;
52    }
53}
54
55// Opens Framebuffer device
56void openFramebufferDevice(hwc_context_t *ctx) {
57    hw_module_t const *module;
58    if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
59        framebuffer_open(module, &(ctx->fbDev));
60    }
61}
62
63void dumpLayer(hwc_layer_t const* l)
64{
65    ALOGD("\ttype=%d, flags=%08x, handle=%p, tr=%02x, blend=%04x, {%d,%d,%d,%d}"
66          ", {%d,%d,%d,%d}",
67          l->compositionType, l->flags, l->handle, l->transform, l->blending,
68          l->sourceCrop.left,
69          l->sourceCrop.top,
70          l->sourceCrop.right,
71          l->sourceCrop.bottom,
72          l->displayFrame.left,
73          l->displayFrame.top,
74          l->displayFrame.right,
75          l->displayFrame.bottom);
76}
77
78void getLayerStats(hwc_context_t *ctx, const hwc_layer_list_t *list)
79{
80    //Video specific stats
81    int yuvCount = 0;
82    int yuvLayerIndex = -1;
83    bool isYuvLayerSkip = false;
84
85    for (size_t i = 0; i < list->numHwLayers; i++) {
86        private_handle_t *hnd =
87            (private_handle_t *)list->hwLayers[i].handle;
88
89        if (isYuvBuffer(hnd)) {
90            yuvCount++;
91            yuvLayerIndex = i;
92            //Animating
93            if (isSkipLayer(&list->hwLayers[i])) {
94                isYuvLayerSkip = true;
95            }
96        } else if (isSkipLayer(&list->hwLayers[i])) { //Popups
97            //If video layer is below a skip layer
98            if(yuvLayerIndex != -1 && yuvLayerIndex < (ssize_t)i) {
99                isYuvLayerSkip = true;
100            }
101        }
102    }
103
104    VideoOverlay::setStats(yuvCount, yuvLayerIndex, isYuvLayerSkip);
105
106    ctx->numHwLayers = list->numHwLayers;
107    return;
108}
109
110//Crops source buffer against destination and FB boundaries
111void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
112        const int fbWidth, const int fbHeight) {
113
114    int& crop_x = crop.left;
115    int& crop_y = crop.top;
116    int& crop_r = crop.right;
117    int& crop_b = crop.bottom;
118    int crop_w = crop.right - crop.left;
119    int crop_h = crop.bottom - crop.top;
120
121    int& dst_x = dst.left;
122    int& dst_y = dst.top;
123    int& dst_r = dst.right;
124    int& dst_b = dst.bottom;
125    int dst_w = dst.right - dst.left;
126    int dst_h = dst.bottom - dst.top;
127
128    if(dst_x < 0) {
129        float scale_x =  crop_w * 1.0f / dst_w;
130        float diff_factor = (scale_x * abs(dst_x));
131        crop_x = crop_x + (int)diff_factor;
132        crop_w = crop_r - crop_x;
133
134        dst_x = 0;
135        dst_w = dst_r - dst_x;;
136    }
137    if(dst_r > fbWidth) {
138        float scale_x = crop_w * 1.0f / dst_w;
139        float diff_factor = scale_x * (dst_r - fbWidth);
140        crop_r = crop_r - diff_factor;
141        crop_w = crop_r - crop_x;
142
143        dst_r = fbWidth;
144        dst_w = dst_r - dst_x;
145    }
146    if(dst_y < 0) {
147        float scale_y = crop_h * 1.0f / dst_h;
148        float diff_factor = scale_y * abs(dst_y);
149        crop_y = crop_y + diff_factor;
150        crop_h = crop_b - crop_y;
151
152        dst_y = 0;
153        dst_h = dst_b - dst_y;
154    }
155    if(dst_b > fbHeight) {
156        float scale_y = crop_h * 1.0f / dst_h;
157        float diff_factor = scale_y * (dst_b - fbHeight);
158        crop_b = crop_b - diff_factor;
159        crop_h = crop_b - crop_y;
160
161        dst_b = fbHeight;
162        dst_h = dst_b - dst_y;
163    }
164}
165
166};//namespace
167