1 /*
2 * Copyright (C) 2021–2022 Beijing OSWare Technology Co., Ltd
3 * This file contains confidential and proprietary information of
4 * OSWare Technology Co., Ltd
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 #include "drm_encoder.h"
20
21 namespace OHOS {
22 namespace HDI {
23 namespace DISPLAY {
DrmEncoder(drmModeEncoder e)24 DrmEncoder::DrmEncoder(drmModeEncoder e)
25 {
26 mEncoderId = e.encoder_id;
27 mCrtcId = e.crtc_id;
28 mPossibleCrtcs = e.possible_crtcs;
29 }
30
PickIdleCrtcId(IdMapPtr<DrmCrtc> & crtcs,uint32_t & crtcId)31 int32_t DrmEncoder::PickIdleCrtcId(IdMapPtr<DrmCrtc> &crtcs, uint32_t &crtcId)
32 {
33 // find the crtc id;
34 DISPLAY_LOGD("crtcs szie %{public}zu", crtcs.size());
35 std::shared_ptr<DrmCrtc> crtc;
36 auto crtcIter = crtcs.find(mCrtcId);
37 if (crtcIter == crtcs.end()) {
38 DISPLAY_LOGW("can not find crtc for id %{public}d", mCrtcId);
39 crtcIter = crtcs.begin();
40 }
41 DISPLAY_CHK_RETURN((crtcIter == crtcs.end()), DISPLAY_FAILURE,
42 DISPLAY_LOGE("have no crtc %{public}zu ", crtcs.size()));
43 crtc = crtcIter->second;
44 DISPLAY_CHK_RETURN((crtc == nullptr), DISPLAY_FAILURE, DISPLAY_LOGE("crtc is null"));
45
46 if (!crtc->CanBind()) {
47 crtc = nullptr;
48 for (const auto &posCrtcPair : crtcs) {
49 auto &posCrts = posCrtcPair.second;
50 DISPLAY_LOGD("try crtc id : %{public}d", posCrts->GetId());
51 if (posCrts->CanBind() && ((1 << posCrts->GetPipe()) & mPossibleCrtcs)) {
52 crtc = posCrts;
53 }
54 }
55 }
56 DISPLAY_CHK_RETURN((crtc == nullptr), DISPLAY_FAILURE,
57 DISPLAY_LOGE("encoder %{public}d can not bind to idle crtc", mEncoderId));
58 crtcId = crtc->GetId();
59 return DISPLAY_SUCCESS;
60 }
61 } // namespace OHOS
62 } // namespace HDI
63 } // namespace DISPLAY
64