bd86fcfff6
This change
1) implements MDP Composition upto 3 layers
2) adds invalidator support to fall back to FB
composition during idle screen condition.
Change-Id: I8d724f905c943f986b68596e2548a7f5a8ce6588
127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012, Code Aurora Forum. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef HWC_UTILS_H
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#define HWC_UTILS_H
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#include <hardware/hwcomposer.h>
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#include <gralloc_priv.h>
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#define ALIGN_TO(x, align) (((x) + ((align)-1)) & ~((align)-1))
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#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true ))
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#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false ))
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#define FINAL_TRANSFORM_MASK 0x000F
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//Fwrd decls
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struct hwc_context_t;
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struct framebuffer_device_t;
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namespace overlay {
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class Overlay;
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}
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namespace qhwc {
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//fwrd decl
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class QueuedBufferStore;
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enum external_display_type {
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EXT_TYPE_NONE,
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EXT_TYPE_HDMI,
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EXT_TYPE_WIFI
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};
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enum HWCCompositionType {
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HWC_USE_GPU = HWC_FRAMEBUFFER, // This layer is to be handled by
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// Surfaceflinger
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HWC_USE_OVERLAY = HWC_OVERLAY, // This layer is to be handled by the overlay
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HWC_USE_COPYBIT // This layer is to be handled by copybit
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};
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enum {
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HWC_MDPCOMP = 0x00000002,
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HWC_LAYER_RESERVED_0 = 0x00000004,
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HWC_LAYER_RESERVED_1 = 0x00000008
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};
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class ExternalDisplay;
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class CopybitEngine;
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// -----------------------------------------------------------------------------
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// Utility functions - implemented in hwc_utils.cpp
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void dumpLayer(hwc_layer_t const* l);
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void getLayerStats(hwc_context_t *ctx, const hwc_layer_list_t *list);
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void initContext(hwc_context_t *ctx);
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void closeContext(hwc_context_t *ctx);
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//Crops source buffer against destination and FB boundaries
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void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
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const int fbWidth, const int fbHeight);
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// Inline utility functions
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static inline bool isSkipLayer(const hwc_layer_t* l) {
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return (UNLIKELY(l && (l->flags & HWC_SKIP_LAYER)));
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}
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// Returns true if the buffer is yuv
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static inline bool isYuvBuffer(const private_handle_t* hnd) {
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return (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO));
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}
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//Return true if buffer is marked locked
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static inline bool isBufferLocked(const private_handle_t* hnd) {
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return (hnd && (private_handle_t::PRIV_FLAGS_HWC_LOCK & hnd->flags));
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}
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// Initialize uevent thread
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void init_uevent_thread(hwc_context_t* ctx);
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inline void getLayerResolution(const hwc_layer_t* layer,
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int& width, int& height)
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{
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hwc_rect_t displayFrame = layer->displayFrame;
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width = displayFrame.right - displayFrame.left;
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height = displayFrame.bottom - displayFrame.top;
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}
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}; //qhwc namespace
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// -----------------------------------------------------------------------------
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// HWC context
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// This structure contains overall state
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struct hwc_context_t {
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hwc_composer_device_t device;
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int numHwLayers;
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int mdpVersion;
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bool hasOverlay;
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int overlayInUse;
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//Framebuffer device
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framebuffer_device_t *mFbDev;
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//Copybit Engine
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qhwc::CopybitEngine* mCopybitEngine;
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//Overlay object - NULL for non overlay devices
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overlay::Overlay *mOverlay;
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//QueuedBufferStore to hold buffers for overlay
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qhwc::QueuedBufferStore *qbuf;
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// External display related information
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qhwc::ExternalDisplay *mExtDisplay;
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};
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#endif //HWC_UTILS_H
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