HWComposer.cpp revision 31d2843b45ebdb69ec3355111b7567363fd2a6b7 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <stdint.h>
18#include <stdio.h>
19#include <stdlib.h>
20#include <string.h>
21#include <sys/types.h>
22
23#include <utils/Errors.h>
24#include <utils/String8.h>
25#include <utils/Vector.h>
26
27#include <hardware/hardware.h>
28
29#include <cutils/log.h>
30
31#include <EGL/egl.h>
32
33#include "LayerBase.h"
34#include "HWComposer.h"
35#include "SurfaceFlinger.h"
36
37namespace android {
38// ---------------------------------------------------------------------------
39
40HWComposer::HWComposer(const sp<SurfaceFlinger>& flinger)
41    : mFlinger(flinger),
42      mModule(0), mHwc(0), mList(0), mCapacity(0),
43      mNumOVLayers(0), mNumFBLayers(0),
44      mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE)
45{
46    int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
47    ALOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
48    if (err == 0) {
49        err = hwc_open(mModule, &mHwc);
50        ALOGE_IF(err, "%s device failed to initialize (%s)",
51                HWC_HARDWARE_COMPOSER, strerror(-err));
52        if (err == 0) {
53            if (mHwc->registerProcs) {
54                mCBContext.hwc = this;
55                mCBContext.procs.invalidate = &hook_invalidate;
56                mCBContext.procs.vsync = &hook_vsync;
57                mHwc->registerProcs(mHwc, &mCBContext.procs);
58                memset(mCBContext.procs.zero, 0, sizeof(mCBContext.procs.zero));
59            }
60        }
61    }
62}
63
64HWComposer::~HWComposer() {
65    free(mList);
66    if (mHwc) {
67        hwc_close(mHwc);
68    }
69}
70
71status_t HWComposer::initCheck() const {
72    return mHwc ? NO_ERROR : NO_INIT;
73}
74
75void HWComposer::hook_invalidate(struct hwc_procs* procs) {
76    reinterpret_cast<cb_context *>(procs)->hwc->invalidate();
77}
78
79void HWComposer::hook_vsync(struct hwc_procs* procs, int dpy, int64_t timestamp) {
80    reinterpret_cast<cb_context *>(procs)->hwc->vsync(dpy, timestamp);
81}
82
83void HWComposer::invalidate() {
84    mFlinger->repaintEverything();
85}
86
87void HWComposer::vsync(int dpy, int64_t timestamp) {
88}
89
90void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) {
91    mDpy = (hwc_display_t)dpy;
92    mSur = (hwc_surface_t)sur;
93}
94
95status_t HWComposer::createWorkList(size_t numLayers) {
96    if (mHwc) {
97        if (!mList || mCapacity < numLayers) {
98            free(mList);
99            size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
100            mList = (hwc_layer_list_t*)malloc(size);
101            mCapacity = numLayers;
102        }
103        mList->flags = HWC_GEOMETRY_CHANGED;
104        mList->numHwLayers = numLayers;
105    }
106    return NO_ERROR;
107}
108
109status_t HWComposer::prepare() const {
110    int err = mHwc->prepare(mHwc, mList);
111    if (err == NO_ERROR) {
112        size_t numOVLayers = 0;
113        size_t numFBLayers = 0;
114        size_t count = mList->numHwLayers;
115        for (size_t i=0 ; i<count ; i++) {
116            hwc_layer& l(mList->hwLayers[i]);
117            if (l.flags & HWC_SKIP_LAYER) {
118                l.compositionType = HWC_FRAMEBUFFER;
119            }
120            switch (l.compositionType) {
121                case HWC_OVERLAY:
122                    numOVLayers++;
123                    break;
124                case HWC_FRAMEBUFFER:
125                    numFBLayers++;
126                    break;
127            }
128        }
129        mNumOVLayers = numOVLayers;
130        mNumFBLayers = numFBLayers;
131    }
132    return (status_t)err;
133}
134
135size_t HWComposer::getLayerCount(int type) const {
136    switch (type) {
137        case HWC_OVERLAY:
138            return mNumOVLayers;
139        case HWC_FRAMEBUFFER:
140            return mNumFBLayers;
141    }
142    return 0;
143}
144
145status_t HWComposer::commit() const {
146    int err = mHwc->set(mHwc, mDpy, mSur, mList);
147    if (mList) {
148        mList->flags &= ~HWC_GEOMETRY_CHANGED;
149    }
150    return (status_t)err;
151}
152
153status_t HWComposer::release() const {
154    if (mHwc) {
155        int err = mHwc->set(mHwc, NULL, NULL, NULL);
156        return (status_t)err;
157    }
158    return NO_ERROR;
159}
160
161status_t HWComposer::disable() {
162    if (mHwc) {
163        free(mList);
164        mList = NULL;
165        int err = mHwc->prepare(mHwc, NULL);
166        return (status_t)err;
167    }
168    return NO_ERROR;
169}
170
171size_t HWComposer::getNumLayers() const {
172    return mList ? mList->numHwLayers : 0;
173}
174
175hwc_layer_t* HWComposer::getLayers() const {
176    return mList ? mList->hwLayers : 0;
177}
178
179void HWComposer::dump(String8& result, char* buffer, size_t SIZE,
180        const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const {
181    if (mHwc && mList) {
182        result.append("Hardware Composer state:\n");
183
184        snprintf(buffer, SIZE, "  numHwLayers=%u, flags=%08x\n",
185                mList->numHwLayers, mList->flags);
186        result.append(buffer);
187        result.append(
188                "   type   |  handle  |   hints  |   flags  | tr | blend |  format  |       source crop         |           frame           name \n"
189                "----------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n");
190        //      " ________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____]
191        for (size_t i=0 ; i<mList->numHwLayers ; i++) {
192            const hwc_layer_t& l(mList->hwLayers[i]);
193            const sp<LayerBase> layer(visibleLayersSortedByZ[i]);
194            int32_t format = -1;
195            if (layer->getLayer() != NULL) {
196                const sp<GraphicBuffer>& buffer(layer->getLayer()->getActiveBuffer());
197                if (buffer != NULL) {
198                    format = buffer->getPixelFormat();
199                }
200            }
201            snprintf(buffer, SIZE,
202                    " %8s | %08x | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n",
203                    l.compositionType ? "OVERLAY" : "FB",
204                    intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format,
205                    l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
206                    l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
207                    layer->getName().string());
208            result.append(buffer);
209        }
210    }
211    if (mHwc && mHwc->common.version >= 1 && mHwc->dump) {
212        mHwc->dump(mHwc, buffer, SIZE);
213        result.append(buffer);
214    }
215}
216
217// ---------------------------------------------------------------------------
218}; // namespace android
219