1 /* 2 * Copyright (C) 2015 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 #ifndef ANDROID_PLATFORM_NV_H_ 18 #define ANDROID_PLATFORM_NV_H_ 19 20 #include "drmresources.h" 21 #include "platform.h" 22 #include "platformdrmgeneric.h" 23 24 #include <stdatomic.h> 25 26 #include <hardware/gralloc.h> 27 28 namespace android { 29 30 class NvImporter : public Importer { 31 public: 32 NvImporter(DrmResources *drm); 33 ~NvImporter() override; 34 35 int Init(); 36 37 int ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) override; 38 int ReleaseBuffer(hwc_drm_bo_t *bo) override; 39 40 private: 41 typedef struct NvBuffer { 42 NvImporter *importer; 43 hwc_drm_bo_t bo; 44 atomic_int ref; 45 } NvBuffer_t; 46 47 static void NvGrallocRelease(void *nv_buffer); 48 void ReleaseBufferImpl(hwc_drm_bo_t *bo); 49 50 NvBuffer_t *GrallocGetNvBuffer(buffer_handle_t handle); 51 int GrallocSetNvBuffer(buffer_handle_t handle, NvBuffer_t *buf); 52 53 DrmResources *drm_; 54 55 const gralloc_module_t *gralloc_; 56 }; 57 58 // This stage looks for any layers that contain transformed protected content 59 // and puts it in the primary plane since Tegra doesn't support planar rotation 60 // on the overlay planes. 61 // 62 // There are two caveats to this approach: 1- Protected content isn't 63 // necessarily planar, but it's usually a safe bet, and 2- This doesn't catch 64 // non-protected planar content. If we wanted to fix this, we'd need to import 65 // the buffer in this stage and peek at it's format. The overhead of doing this 66 // doesn't seem worth it since we'll end up displaying the right thing in both 67 // cases anyways. 68 class PlanStageProtectedRotated : public Planner::PlanStage { 69 public: 70 int ProvisionPlanes(std::vector<DrmCompositionPlane> *composition, 71 std::map<size_t, DrmHwcLayer *> &layers, DrmCrtc *crtc, 72 std::vector<DrmPlane *> *planes); 73 }; 74 75 // This stage looks for layers that would not be supported by Tegra driver due 76 // to limitations such as downscaling. If the layer is unprotected it will be 77 // punted for precomp to handle, other wise if protected it will be dropped as 78 // it cannot be supported by any means. 79 class PlanStageNvLimits : public Planner::PlanStage { 80 public: 81 int ProvisionPlanes(std::vector<DrmCompositionPlane> *composition, 82 std::map<size_t, DrmHwcLayer *> &layers, DrmCrtc *crtc, 83 std::vector<DrmPlane *> *planes); 84 protected: 85 bool CheckLayer(size_t zorder, DrmHwcLayer *layer); 86 }; 87 } 88 89 #endif 90