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Mathias Agopiane0d5f5b2010-08-10 17:14:02 -07001/*
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>
Mathias Agopianb59beb52010-08-11 17:31:33 -070018#include <stdio.h>
19#include <stdlib.h>
20#include <string.h>
Mathias Agopiane0d5f5b2010-08-10 17:14:02 -070021#include <sys/types.h>
22
23#include <utils/Errors.h>
Mathias Agopian90da4dd2010-09-23 18:13:21 -070024#include <utils/String8.h>
Mathias Agopiane0d5f5b2010-08-10 17:14:02 -070025
26#include <hardware/hardware.h>
27
28#include <cutils/log.h>
29
30#include <EGL/egl.h>
31
32#include "HWComposer.h"
33
34namespace android {
35// ---------------------------------------------------------------------------
36
37HWComposer::HWComposer()
Mathias Agopianf8e705d2010-08-12 15:03:26 -070038 : mModule(0), mHwc(0), mList(0), mCapacity(0),
Mathias Agopiane0d5f5b2010-08-10 17:14:02 -070039 mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE)
40{
41 int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
42 LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
43 if (err == 0) {
44 err = hwc_open(mModule, &mHwc);
45 LOGE_IF(err, "%s device failed to initialize (%s)",
46 HWC_HARDWARE_COMPOSER, strerror(-err));
47 }
48}
49
50HWComposer::~HWComposer() {
51 free(mList);
52 if (mHwc) {
53 hwc_close(mHwc);
54 }
55}
56
57status_t HWComposer::initCheck() const {
58 return mHwc ? NO_ERROR : NO_INIT;
59}
60
61void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) {
62 mDpy = (hwc_display_t)dpy;
63 mSur = (hwc_surface_t)sur;
64}
65
66status_t HWComposer::createWorkList(size_t numLayers) {
Mathias Agopianf8e705d2010-08-12 15:03:26 -070067 if (mHwc) {
68 if (!mList || mCapacity < numLayers) {
69 free(mList);
70 size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
71 mList = (hwc_layer_list_t*)malloc(size);
72 mCapacity = numLayers;
73 }
Mathias Agopiane0d5f5b2010-08-10 17:14:02 -070074 mList->flags = HWC_GEOMETRY_CHANGED;
75 mList->numHwLayers = numLayers;
76 }
77 return NO_ERROR;
78}
79
80status_t HWComposer::prepare() const {
81 int err = mHwc->prepare(mHwc, mList);
82 return (status_t)err;
83}
84
85status_t HWComposer::commit() const {
86 int err = mHwc->set(mHwc, mDpy, mSur, mList);
Mathias Agopian3e1a18a2010-10-07 14:57:04 -070087 if (mList) {
88 mList->flags &= ~HWC_GEOMETRY_CHANGED;
89 }
Mathias Agopiane0d5f5b2010-08-10 17:14:02 -070090 return (status_t)err;
91}
92
Antti Hatala11042a42010-09-09 02:33:05 -070093status_t HWComposer::release() const {
94 int err = mHwc->set(mHwc, NULL, NULL, NULL);
95 return (status_t)err;
96}
97
Mathias Agopianf8e705d2010-08-12 15:03:26 -070098size_t HWComposer::getNumLayers() const {
99 return mList ? mList->numHwLayers : 0;
Mathias Agopiane0d5f5b2010-08-10 17:14:02 -0700100}
101
Mathias Agopianf8e705d2010-08-12 15:03:26 -0700102hwc_layer_t* HWComposer::getLayers() const {
103 return mList ? mList->hwLayers : 0;
Mathias Agopiane0d5f5b2010-08-10 17:14:02 -0700104}
105
Mathias Agopian90da4dd2010-09-23 18:13:21 -0700106void HWComposer::dump(String8& result, char* buffer, size_t SIZE) const {
107 if (mHwc && mList) {
108 result.append("Hardware Composer state:\n");
109
110 snprintf(buffer, SIZE, " numHwLayers=%u, flags=%08x\n",
111 mList->numHwLayers, mList->flags);
112 result.append(buffer);
113
114 for (size_t i=0 ; i<mList->numHwLayers ; i++) {
115 const hwc_layer_t& l(mList->hwLayers[i]);
116 snprintf(buffer, SIZE, " %8s | %08x | %08x | %02x | %04x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d]\n",
117 l.compositionType ? "OVERLAY" : "FB",
118 l.hints, l.flags, l.transform, l.blending,
119 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
120 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom);
121 result.append(buffer);
122 }
123 }
124}
125
Mathias Agopiane0d5f5b2010-08-10 17:14:02 -0700126// ---------------------------------------------------------------------------
127}; // namespace android