overlayMdpRot.cpp revision b166940edca6e312463461438e2aa66e9852c26a 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * Copyright (c) 2010-2013, 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 "overlayUtils.h"
21#include "overlayRotator.h"
22
23namespace ovutils = overlay::utils;
24
25namespace overlay {
26
27MdpRot::MdpRot() {
28    reset();
29    init();
30}
31
32MdpRot::~MdpRot() { close(); }
33
34bool MdpRot::enabled() const { return mRotImgInfo.enable; }
35
36void MdpRot::setRotations(uint32_t r) { mRotImgInfo.rotations = r; }
37
38int MdpRot::getDstMemId() const {
39    return mRotDataInfo.dst.memory_id;
40}
41
42uint32_t MdpRot::getDstOffset() const {
43    return mRotDataInfo.dst.offset;
44}
45
46uint32_t MdpRot::getDstFormat() const {
47    return mRotImgInfo.dst.format;
48}
49
50uint32_t MdpRot::getSessId() const { return mRotImgInfo.session_id; }
51
52void MdpRot::setDownscale(int ds) {
53    if ((utils::ROT_DS_EIGHTH == ds) && (mRotImgInfo.src_rect.h & 0xF)) {
54        // Ensure src_rect.h is a multiple of 16 for 1/8 downscaling.
55        // This is an undocumented MDP Rotator constraint.
56        mRotImgInfo.src_rect.h = utils::aligndown(mRotImgInfo.src_rect.h, 16);
57    }
58    mRotImgInfo.downscale_ratio = ds;
59}
60
61void MdpRot::save() {
62    mLSRotImgInfo = mRotImgInfo;
63}
64
65bool MdpRot::rotConfChanged() const {
66    // 0 means same
67    if(0 == ::memcmp(&mRotImgInfo, &mLSRotImgInfo,
68                sizeof (msm_rotator_img_info))) {
69        return false;
70    }
71    return true;
72}
73
74bool MdpRot::init()
75{
76    if(!mFd.open(Res::rotPath, O_RDWR)){
77        ALOGE("MdpRot failed to init %s", Res::rotPath);
78        return false;
79    }
80    return true;
81}
82
83void MdpRot::setSource(const overlay::utils::Whf& awhf) {
84    utils::Whf whf(awhf);
85    mRotImgInfo.src.format = whf.format;
86
87    mRotImgInfo.src.width = whf.w;
88    mRotImgInfo.src.height = whf.h;
89
90    mRotImgInfo.src_rect.w = whf.w;
91    mRotImgInfo.src_rect.h = whf.h;
92
93    mRotImgInfo.dst.width = whf.w;
94    mRotImgInfo.dst.height = whf.h;
95}
96
97void MdpRot::setFlags(const utils::eMdpFlags& flags) {
98    mRotImgInfo.secure = 0;
99    if(flags & utils::OV_MDP_SECURE_OVERLAY_SESSION)
100        mRotImgInfo.secure = 1;
101}
102
103void MdpRot::setTransform(const utils::eTransform& rot)
104{
105    int r = utils::getMdpOrient(rot);
106    setRotations(r);
107    //getMdpOrient will switch the flips if the source is 90 rotated.
108    //Clients in Android dont factor in 90 rotation while deciding the flip.
109    mOrientation = static_cast<utils::eTransform>(r);
110    ALOGE_IF(DEBUG_OVERLAY, "%s: r=%d", __FUNCTION__, r);
111}
112
113void MdpRot::doTransform() {
114    if(mOrientation & utils::OVERLAY_TRANSFORM_ROT_90)
115        utils::swap(mRotImgInfo.dst.width, mRotImgInfo.dst.height);
116}
117
118bool MdpRot::commit() {
119    doTransform();
120    if(rotConfChanged()) {
121        mRotImgInfo.enable = 1;
122        if(!overlay::mdp_wrapper::startRotator(mFd.getFD(), mRotImgInfo)) {
123            ALOGE("MdpRot commit failed");
124            dump();
125            mRotImgInfo.enable = 0;
126            return false;
127        }
128        save();
129        mRotDataInfo.session_id = mRotImgInfo.session_id;
130    }
131    return true;
132}
133
134uint32_t MdpRot::calcOutputBufSize() {
135    ovutils::Whf destWhf(mRotImgInfo.dst.width,
136            mRotImgInfo.dst.height, mRotImgInfo.dst.format);
137    return Rotator::calcOutputBufSize(destWhf);
138}
139
140bool MdpRot::open_i(uint32_t numbufs, uint32_t bufsz)
141{
142    OvMem mem;
143
144    OVASSERT(MAP_FAILED == mem.addr(), "MAP failed in open_i");
145
146    if(!mem.open(numbufs, bufsz, mRotImgInfo.secure)){
147        ALOGE("%s: Failed to open", __func__);
148        mem.close();
149        return false;
150    }
151
152    OVASSERT(MAP_FAILED != mem.addr(), "MAP failed");
153    OVASSERT(mem.getFD() != -1, "getFd is -1");
154
155    mRotDataInfo.dst.memory_id = mem.getFD();
156    mRotDataInfo.dst.offset = 0;
157    mMem.curr().m = mem;
158    return true;
159}
160
161bool MdpRot::close() {
162    bool success = true;
163    if(mFd.valid() && (getSessId() != 0)) {
164        if(!mdp_wrapper::endRotator(mFd.getFD(), getSessId())) {
165            ALOGE("Mdp Rot error endRotator, fd=%d sessId=%u",
166                    mFd.getFD(), getSessId());
167            success = false;
168        }
169    }
170    if (!mFd.close()) {
171        ALOGE("Mdp Rot error closing fd");
172        success = false;
173    }
174    if (!mMem.close()) {
175        ALOGE("Mdp Rot error closing mem");
176        success = false;
177    }
178    reset();
179    return success;
180}
181
182bool MdpRot::remap(uint32_t numbufs) {
183    // if current size changed, remap
184    uint32_t opBufSize = calcOutputBufSize();
185    if(opBufSize == mMem.curr().size()) {
186        ALOGE_IF(DEBUG_OVERLAY, "%s: same size %d", __FUNCTION__, opBufSize);
187        return true;
188    }
189
190    ALOGE_IF(DEBUG_OVERLAY, "%s: size changed - remapping", __FUNCTION__);
191    OVASSERT(!mMem.prev().valid(), "Prev should not be valid");
192
193    // ++mMem will make curr to be prev, and prev will be curr
194    ++mMem;
195    if(!open_i(numbufs, opBufSize)) {
196        ALOGE("%s Error could not open", __FUNCTION__);
197        return false;
198    }
199    for (uint32_t i = 0; i < numbufs; ++i) {
200        mMem.curr().mRotOffset[i] = i * opBufSize;
201    }
202    return true;
203}
204
205void MdpRot::reset() {
206    ovutils::memset0(mRotImgInfo);
207    ovutils::memset0(mLSRotImgInfo);
208    ovutils::memset0(mRotDataInfo);
209    ovutils::memset0(mMem.curr().mRotOffset);
210    ovutils::memset0(mMem.prev().mRotOffset);
211    mMem.curr().mCurrOffset = 0;
212    mMem.prev().mCurrOffset = 0;
213    mOrientation = utils::OVERLAY_TRANSFORM_0;
214}
215
216bool MdpRot::queueBuffer(int fd, uint32_t offset) {
217    if(enabled()) {
218        mRotDataInfo.src.memory_id = fd;
219        mRotDataInfo.src.offset = offset;
220
221        remap(RotMem::Mem::ROT_NUM_BUFS);
222        OVASSERT(mMem.curr().m.numBufs(),
223                "queueBuffer numbufs is 0");
224        mRotDataInfo.dst.offset =
225                mMem.curr().mRotOffset[mMem.curr().mCurrOffset];
226        mMem.curr().mCurrOffset =
227                (mMem.curr().mCurrOffset + 1) % mMem.curr().m.numBufs();
228
229        if(!overlay::mdp_wrapper::rotate(mFd.getFD(), mRotDataInfo)) {
230            ALOGE("MdpRot failed rotate");
231            dump();
232            return false;
233        }
234
235        // if the prev mem is valid, we need to close
236        if(mMem.prev().valid()) {
237            // FIXME if no wait for vsync the above
238            // play will return immediatly and might cause
239            // tearing when prev.close is called.
240            if(!mMem.prev().close()) {
241                ALOGE("%s error in closing prev rot mem", __FUNCTION__);
242                return false;
243            }
244        }
245    }
246    return true;
247}
248
249void MdpRot::dump() const {
250    ALOGE("== Dump MdpRot start ==");
251    mFd.dump();
252    mMem.curr().m.dump();
253    mdp_wrapper::dump("mRotImgInfo", mRotImgInfo);
254    mdp_wrapper::dump("mRotDataInfo", mRotDataInfo);
255    ALOGE("== Dump MdpRot end ==");
256}
257
258void MdpRot::getDump(char *buf, size_t len) const {
259    ovutils::getDump(buf, len, "MdpRotCtrl(msm_rotator_img_info)", mRotImgInfo);
260    ovutils::getDump(buf, len, "MdpRotData(msm_rotator_data_info)", mRotDataInfo);
261}
262
263} // namespace overlay
264