1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
4 * Not a Contribution, Apache license notifications and license are retained
5 * for attribution purposes only.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 *      http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18*/
19
20#include <sync/sync.h>
21#include "overlayRotator.h"
22#include "overlayUtils.h"
23#include "mdp_version.h"
24#include "gr.h"
25
26namespace ovutils = overlay::utils;
27
28namespace overlay {
29
30//============Rotator=========================
31
32Rotator::~Rotator() {}
33
34Rotator* Rotator::getRotator() {
35    int type = getRotatorHwType();
36    if(type == TYPE_MDP) {
37        return new MdpRot(); //will do reset
38    } else if(type == TYPE_MDSS) {
39        return new MdssRot();
40    } else {
41        ALOGE("%s Unknown h/w type %d", __FUNCTION__, type);
42        return NULL;
43    }
44}
45
46uint32_t Rotator::calcOutputBufSize(const utils::Whf& destWhf) {
47    //dummy aligned w & h.
48    int alW = 0, alH = 0;
49    int halFormat = ovutils::getHALFormat(destWhf.format);
50    //A call into gralloc/memalloc
51    return getBufferSizeAndDimensions(
52            destWhf.w, destWhf.h, halFormat, alW, alH);
53}
54
55int Rotator::getRotatorHwType() {
56    int mdpVersion = qdutils::MDPVersion::getInstance().getMDPVersion();
57    if (mdpVersion == qdutils::MDSS_V5)
58        return TYPE_MDSS;
59    return TYPE_MDP;
60}
61
62
63//============RotMem=========================
64
65bool RotMem::close() {
66    bool ret = true;
67    for(uint32_t i=0; i < RotMem::MAX_ROT_MEM; ++i) {
68        // skip current, and if valid, close
69        if(m[i].valid()) {
70            if(m[i].close() == false) {
71                ALOGE("%s error in closing rot mem %d", __FUNCTION__, i);
72                ret = false;
73            }
74        }
75    }
76    return ret;
77}
78
79RotMem::Mem::Mem() : mCurrOffset(0) {
80    utils::memset0(mRotOffset);
81    for(int i = 0; i < ROT_NUM_BUFS; i++) {
82        mRelFence[i] = -1;
83    }
84}
85
86RotMem::Mem::~Mem() {
87    for(int i = 0; i < ROT_NUM_BUFS; i++) {
88        ::close(mRelFence[i]);
89        mRelFence[i] = -1;
90    }
91}
92
93void RotMem::Mem::setReleaseFd(const int& fence) {
94    int ret = 0;
95
96    if(mRelFence[mCurrOffset] >= 0) {
97        //Wait for previous usage of this buffer to be over.
98        //Can happen if rotation takes > vsync and a fast producer. i.e queue
99        //happens in subsequent vsyncs either because content is 60fps or
100        //because the producer is hasty sometimes.
101        ret = sync_wait(mRelFence[mCurrOffset], 1000);
102        if(ret < 0) {
103            ALOGE("%s: sync_wait error!! error no = %d err str = %s",
104                __FUNCTION__, errno, strerror(errno));
105        }
106        ::close(mRelFence[mCurrOffset]);
107    }
108    mRelFence[mCurrOffset] = fence;
109}
110
111//============RotMgr=========================
112
113RotMgr::RotMgr() {
114    for(int i = 0; i < MAX_ROT_SESS; i++) {
115        mRot[i] = 0;
116    }
117    mUseCount = 0;
118    mRotDevFd = -1;
119}
120
121RotMgr::~RotMgr() {
122    clear();
123}
124
125void RotMgr::configBegin() {
126    //Reset the number of objects used
127    mUseCount = 0;
128}
129
130void RotMgr::configDone() {
131    //Remove the top most unused objects. Videos come and go.
132    for(int i = mUseCount; i < MAX_ROT_SESS; i++) {
133        if(mRot[i]) {
134            delete mRot[i];
135            mRot[i] = 0;
136        }
137    }
138}
139
140Rotator* RotMgr::getNext() {
141    //Return a rot object, creating one if necessary
142    overlay::Rotator *rot = NULL;
143    if(mUseCount >= MAX_ROT_SESS) {
144        ALOGE("%s, MAX rotator sessions reached", __func__);
145    } else {
146        if(mRot[mUseCount] == NULL)
147            mRot[mUseCount] = overlay::Rotator::getRotator();
148        rot = mRot[mUseCount++];
149    }
150    return rot;
151}
152
153void RotMgr::clear() {
154    //Brute force obj destruction, helpful in suspend.
155    for(int i = 0; i < MAX_ROT_SESS; i++) {
156        if(mRot[i]) {
157            delete mRot[i];
158            mRot[i] = 0;
159        }
160    }
161    mUseCount = 0;
162    ::close(mRotDevFd);
163    mRotDevFd = -1;
164}
165
166void RotMgr::getDump(char *buf, size_t len) {
167    for(int i = 0; i < MAX_ROT_SESS; i++) {
168        if(mRot[i]) {
169            mRot[i]->getDump(buf, len);
170        }
171    }
172    char str[4] = {'\0'};
173    snprintf(str, 4, "\n");
174    strncat(buf, str, strlen(str));
175}
176
177int RotMgr::getRotDevFd() {
178    if(mRotDevFd < 0 && Rotator::getRotatorHwType() == Rotator::TYPE_MDSS) {
179        mRotDevFd = ::open("/dev/graphics/fb0", O_RDWR, 0);
180        if(mRotDevFd < 0) {
181            ALOGE("%s failed to open fb0", __FUNCTION__);
182        }
183    }
184    return mRotDevFd;
185}
186
187}
188