HWComposer.cpp revision fb4d5d5726c172adbe62341d99a2148685a98379 
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      mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE)
44{
45    int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
46    LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
47    if (err == 0) {
48        err = hwc_open(mModule, &mHwc);
49        LOGE_IF(err, "%s device failed to initialize (%s)",
50                HWC_HARDWARE_COMPOSER, strerror(-err));
51        if (err == 0) {
52            if (mHwc->registerProcs) {
53                mCBContext.hwc = this;
54                mCBContext.procs.invalidate = &hook_invalidate;
55                mHwc->registerProcs(mHwc, &mCBContext.procs);
56            }
57        }
58    }
59}
60
61HWComposer::~HWComposer() {
62    free(mList);
63    if (mHwc) {
64        hwc_close(mHwc);
65    }
66}
67
68status_t HWComposer::initCheck() const {
69    return mHwc ? NO_ERROR : NO_INIT;
70}
71
72void HWComposer::hook_invalidate(struct hwc_procs* procs) {
73    reinterpret_cast<cb_context *>(procs)->hwc->invalidate();
74}
75
76void HWComposer::invalidate() {
77    mFlinger->signalEvent();
78}
79
80void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) {
81    mDpy = (hwc_display_t)dpy;
82    mSur = (hwc_surface_t)sur;
83}
84
85status_t HWComposer::createWorkList(size_t numLayers) {
86    if (mHwc) {
87        if (!mList || mCapacity < numLayers) {
88            free(mList);
89            size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
90            mList = (hwc_layer_list_t*)malloc(size);
91            mCapacity = numLayers;
92        }
93        mList->flags = HWC_GEOMETRY_CHANGED;
94        mList->numHwLayers = numLayers;
95    }
96    return NO_ERROR;
97}
98
99status_t HWComposer::prepare() const {
100    int err = mHwc->prepare(mHwc, mList);
101    return (status_t)err;
102}
103
104status_t HWComposer::commit() const {
105    int err = mHwc->set(mHwc, mDpy, mSur, mList);
106    if (mList) {
107        mList->flags &= ~HWC_GEOMETRY_CHANGED;
108    }
109    return (status_t)err;
110}
111
112status_t HWComposer::release() const {
113    if (mHwc) {
114        int err = mHwc->set(mHwc, NULL, NULL, NULL);
115        return (status_t)err;
116    }
117    return NO_ERROR;
118}
119
120status_t HWComposer::disable() {
121    if (mHwc) {
122        free(mList);
123        mList = NULL;
124        int err = mHwc->prepare(mHwc, NULL);
125        return (status_t)err;
126    }
127    return NO_ERROR;
128}
129
130size_t HWComposer::getNumLayers() const {
131    return mList ? mList->numHwLayers : 0;
132}
133
134hwc_layer_t* HWComposer::getLayers() const {
135    return mList ? mList->hwLayers : 0;
136}
137
138void HWComposer::dump(String8& result, char* buffer, size_t SIZE,
139        const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const {
140    if (mHwc && mList) {
141        result.append("Hardware Composer state:\n");
142
143        snprintf(buffer, SIZE, "  numHwLayers=%u, flags=%08x\n",
144                mList->numHwLayers, mList->flags);
145        result.append(buffer);
146        result.append(
147                "    type   |   hints  |   flags  | tr | blend |  format  |     source rectangle      |      crop rectangle       name \n"
148                "-----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n");
149        //      "  ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____]
150        for (size_t i=0 ; i<mList->numHwLayers ; i++) {
151            const hwc_layer_t& l(mList->hwLayers[i]);
152            const sp<LayerBase> layer(visibleLayersSortedByZ[i]);
153            int32_t format = -1;
154            if (layer->getLayer() != NULL) {
155                const sp<GraphicBuffer>& buffer(layer->getLayer()->getActiveBuffer());
156                if (buffer != NULL) {
157                    format = buffer->getPixelFormat();
158                }
159            }
160            snprintf(buffer, SIZE,
161                    "  %8s | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n",
162                    l.compositionType ? "OVERLAY" : "FB",
163                    l.hints, l.flags, l.transform, l.blending, format,
164                    l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
165                    l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
166                    layer->getName().string());
167            result.append(buffer);
168        }
169    }
170    if (mHwc && mHwc->common.version >= 1 && mHwc->dump) {
171        mHwc->dump(mHwc, buffer, SIZE);
172        result.append(buffer);
173    }
174}
175
176// ---------------------------------------------------------------------------
177}; // namespace android
178