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      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 
     26 namespace ovutils = overlay::utils;
     27 
     28 namespace overlay {
     29 
     30 //============Rotator=========================
     31 
     32 Rotator::~Rotator() {}
     33 
     34 Rotator* 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 
     46 uint32_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 
     55 int 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 
     65 bool 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 
     79 RotMem::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 
     86 RotMem::Mem::~Mem() {
     87     for(int i = 0; i < ROT_NUM_BUFS; i++) {
     88         ::close(mRelFence[i]);
     89         mRelFence[i] = -1;
     90     }
     91 }
     92 
     93 void 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 
    113 RotMgr::RotMgr() {
    114     for(int i = 0; i < MAX_ROT_SESS; i++) {
    115         mRot[i] = 0;
    116     }
    117     mUseCount = 0;
    118     mRotDevFd = -1;
    119 }
    120 
    121 RotMgr::~RotMgr() {
    122     clear();
    123 }
    124 
    125 void RotMgr::configBegin() {
    126     //Reset the number of objects used
    127     mUseCount = 0;
    128 }
    129 
    130 void 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 
    140 Rotator* 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 
    153 void 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 
    166 void 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[32] = {'\0'};
    173     snprintf(str, 32, "\n================\n");
    174     strncat(buf, str, strlen(str));
    175 }
    176 
    177 int RotMgr::getRotDevFd() {
    178     //2nd check just in case
    179     if(mRotDevFd < 0 && Rotator::getRotatorHwType() == Rotator::TYPE_MDP) {
    180         mRotDevFd = ::open("/dev/msm_rotator", O_RDWR, 0);
    181         if(mRotDevFd < 0) {
    182             ALOGE("%s failed to open rotator device", __FUNCTION__);
    183         }
    184     }
    185     return mRotDevFd;
    186 }
    187 
    188 }
    189