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comparison: gfx/layers/ipc/PCompositor.ipdl
gfx/layers/ipc/PCompositor.ipdl
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * vim: sw=2 ts=8 et : | |
| 3 */ | |
| 4 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 include LayersSurfaces; | |
| 9 include protocol PGrallocBuffer; | |
| 10 include protocol PLayerTransaction; | |
| 11 include "mozilla/GfxMessageUtils.h"; | |
| 12 include "nsRegion.h"; | |
| 13 | |
| 14 using struct mozilla::null_t from "ipc/IPCMessageUtils.h"; | |
| 15 using struct mozilla::layers::TextureFactoryIdentifier from "mozilla/layers/CompositorTypes.h"; | |
| 16 using struct mozilla::layers::FrameMetrics from "FrameMetrics.h"; | |
| 17 using mozilla::layers::FrameMetrics::ViewID from "FrameMetrics.h"; | |
| 18 using mozilla::layers::LayersBackend from "mozilla/layers/LayersTypes.h"; | |
| 19 using mozilla::CrossProcessMutexHandle from "mozilla/ipc/CrossProcessMutex.h"; | |
| 20 using mozilla::ipc::SharedMemoryBasic::Handle from "mozilla/ipc/SharedMemoryBasic.h"; | |
| 21 using class mozilla::TimeStamp from "mozilla/TimeStamp.h"; | |
| 22 | |
| 23 namespace mozilla { | |
| 24 namespace layers { | |
| 25 | |
| 26 | |
| 27 /** | |
| 28 * The PCompositor protocol is used to manage communication between | |
| 29 * the main thread and the compositor thread context. It's primary | |
| 30 * purpose is to manage the PLayerTransaction sub protocol. | |
| 31 */ | |
| 32 // This should really be 'sync', but we're using 'rpc' as a workaround | |
| 33 // for Bug 716631. | |
| 34 intr protocol PCompositor | |
| 35 { | |
| 36 // A Compositor manages a single Layer Manager (PLayerTransaction) | |
| 37 manages PLayerTransaction; | |
| 38 | |
| 39 child: | |
| 40 // The child should invalidate everything so that the whole window is redrawn. | |
| 41 async InvalidateAll(); | |
| 42 | |
| 43 // The compositor completed a layers transaction. id is the layers id | |
| 44 // of the child layer tree that was composited (or 0 when notifying | |
| 45 // the root layer tree). | |
| 46 async DidComposite(uint64_t id); | |
| 47 | |
| 48 parent: | |
| 49 | |
| 50 // The child is about to be destroyed, so perform any necessary cleanup. | |
| 51 sync WillStop(); | |
| 52 | |
| 53 // Clean up in preparation for own destruction. | |
| 54 sync Stop(); | |
| 55 | |
| 56 // Pause/resume the compositor. These are intended to be used on mobile, when | |
| 57 // the compositor needs to pause/resume in lockstep with the application. | |
| 58 sync Pause(); | |
| 59 sync Resume(); | |
| 60 | |
| 61 async NotifyChildCreated(uint64_t id); | |
| 62 | |
| 63 // Make a snapshot of the content that would have been drawn to our | |
| 64 // render target at the time this message is received. If the size | |
| 65 // or format of |inSnapshot| doesn't match our render target, | |
| 66 // results are undefined. | |
| 67 // | |
| 68 // NB: this message will result in animations, transforms, effects, | |
| 69 // and so forth being interpolated. That's what we want to happen. | |
| 70 sync MakeSnapshot(SurfaceDescriptor inSnapshot) | |
| 71 returns (SurfaceDescriptor outSnapshot); | |
| 72 | |
| 73 // Make sure any pending composites are started immediately and | |
| 74 // block until they are completed. | |
| 75 sync FlushRendering(); | |
| 76 | |
| 77 sync StartFrameTimeRecording(int32_t bufferSize) | |
| 78 returns (uint32_t startIndex); | |
| 79 | |
| 80 sync StopFrameTimeRecording(uint32_t startIndex) | |
| 81 returns (float[] intervals); | |
| 82 | |
| 83 // layersBackendHints is an ordered list of preffered backends where | |
| 84 // layersBackendHints[0] is the best backend. If any hints are LayersBackend::LAYERS_NONE | |
| 85 // that hint is ignored. | |
| 86 sync PLayerTransaction(LayersBackend[] layersBackendHints, uint64_t id) | |
| 87 returns (TextureFactoryIdentifier textureFactoryIdentifier, bool success); | |
| 88 | |
| 89 // Notify the compositor that a region of the screen has been invalidated. | |
| 90 async NotifyRegionInvalidated(nsIntRegion region); | |
| 91 | |
| 92 child: | |
| 93 // Send back Compositor Frame Metrics from APZCs so tiled layers can | |
| 94 // update progressively. | |
| 95 async SharedCompositorFrameMetrics(Handle metrics, CrossProcessMutexHandle mutex, uint32_t aAPZCId); | |
| 96 async ReleaseSharedCompositorFrameMetrics(ViewID aId, uint32_t aAPZCId); | |
| 97 }; | |
| 98 | |
| 99 } // layers | |
| 100 } // mozilla |
