6a9bb9ebd0
This change adds support in HWC for MDP partial update applicable only for command mode panels. Presence of MDP FB (GRAM) in command mode panels allows MDP clients to update only the updating region of the frame as rest of the frame will be cached in the GRAM. HWC calculates the updating region of a frame (ROI) by deducing outer bounds of its updating layer destinations. Layers not lying within the calculated ROI will be dropped from the composition since its illegal to program MDP pipes for non participating layers. Change-Id: I890d98ff7960fe888787981803cac62f68471201
313 lines
11 KiB
C++
313 lines
11 KiB
C++
/*
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* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef OVERLAY_H
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#define OVERLAY_H
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#include "overlayUtils.h"
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#include "utils/threads.h"
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struct MetaData_t;
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namespace overlay {
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class GenericPipe;
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class Overlay : utils::NoCopy {
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public:
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enum { DMA_BLOCK_MODE, DMA_LINE_MODE };
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//Abstract Display types. Each backed by a LayerMixer,
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//represented by a fb node.
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//High res panels can be backed by 2 layer mixers and a single fb node.
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enum { DPY_PRIMARY, DPY_EXTERNAL, DPY_WRITEBACK, DPY_UNUSED };
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enum { DPY_MAX = DPY_UNUSED };
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enum { MIXER_LEFT, MIXER_RIGHT, MIXER_UNUSED };
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enum { MIXER_DEFAULT = MIXER_LEFT, MIXER_MAX = MIXER_UNUSED };
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enum { MAX_FB_DEVICES = DPY_MAX };
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/* dtor close */
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~Overlay();
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/* Marks the beginning of a drawing round, resets usage bits on pipes
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* Should be called when drawing begins before any pipe config is done.
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*/
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void configBegin();
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/* Marks the end of config for this drawing round
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* Will do garbage collection of pipe objects and thus calling UNSETs,
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* closing FDs, removing rotator objects and memory, if allocated.
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* Should be called after all pipe configs are done.
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*/
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void configDone();
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/* Returns an available pipe based on the type of pipe requested. When ANY
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* is requested, the first available VG or RGB is returned. If no pipe is
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* available for the display "dpy" then INV is returned. Note: If a pipe is
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* assigned to a certain display, then it cannot be assigned to another
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* display without being garbage-collected once. To add if a pipe is
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* asisgned to a mixer within a display it cannot be reused for another
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* mixer without being UNSET once*/
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utils::eDest nextPipe(utils::eMdpPipeType, int dpy, int mixer);
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void setSource(const utils::PipeArgs args, utils::eDest dest);
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void setCrop(const utils::Dim& d, utils::eDest dest);
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void setTransform(const int orientation, utils::eDest dest);
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void setPosition(const utils::Dim& dim, utils::eDest dest);
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void setVisualParams(const MetaData_t& data, utils::eDest dest);
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bool commit(utils::eDest dest);
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bool queueBuffer(int fd, uint32_t offset, utils::eDest dest);
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/* Returns available ("unallocated") pipes for a display's mixer */
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int availablePipes(int dpy, int mixer);
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/* Returns available ("unallocated") pipes for a display */
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int availablePipes(int dpy);
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/* Returns available ("unallocated") pipe of given type for a display */
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int availablePipes(int dpy, utils::eMdpPipeType type);
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/* Returns if any of the requested pipe type is attached to any of the
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* displays
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*/
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bool isPipeTypeAttached(utils::eMdpPipeType type);
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/* Returns pipe dump. Expects a NULL terminated buffer of big enough size
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* to populate.
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*/
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void getDump(char *buf, size_t len);
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/* Reset usage and allocation bits on all pipes for given display */
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void clear(int dpy);
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/* Marks the display, whose pipes need to be forcibaly configured */
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void forceSet(const int& dpy);
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/* Closes open pipes, called during startup */
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static int initOverlay();
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/* Returns the singleton instance of overlay */
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static Overlay* getInstance();
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static void setDMAMode(const int& mode);
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static int getDMAMode();
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/* Returns the framebuffer node backing up the display */
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static int getFbForDpy(const int& dpy);
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static bool displayCommit(const int& fd, const utils::Dim& roi);
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static bool displayCommit(const int& fd);
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private:
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/* Ctor setup */
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explicit Overlay();
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/*Validate index range, abort if invalid */
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void validate(int index);
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void dump() const;
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/* Just like a Facebook for pipes, but much less profile info */
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struct PipeBook {
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void init();
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void destroy();
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/* Check if pipe exists and return true, false otherwise */
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bool valid();
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/* Hardware pipe wrapper */
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GenericPipe *mPipe;
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/* Display using this pipe. Refer to enums above */
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int mDisplay;
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/* Mixer within a split display this pipe is attached to */
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int mMixer;
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/* operations on bitmap */
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static bool pipeUsageUnchanged();
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static void setUse(int index);
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static void resetUse(int index);
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static bool isUsed(int index);
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static bool isNotUsed(int index);
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static void save();
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static void setAllocation(int index);
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static void resetAllocation(int index);
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static bool isAllocated(int index);
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static bool isNotAllocated(int index);
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static utils::eMdpPipeType getPipeType(utils::eDest dest);
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static const char* getDestStr(utils::eDest dest);
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static int NUM_PIPES;
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static utils::eMdpPipeType pipeTypeLUT[utils::OV_MAX];
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private:
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//usage tracks if a successful commit happened. So a pipe could be
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//allocated to a display, but it may not end up using it for various
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//reasons. If one display actually uses a pipe then it amy not be
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//used by another display, without an UNSET in between.
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static int sPipeUsageBitmap;
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static int sLastUsageBitmap;
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//Tracks which pipe objects are allocated. This does not imply that they
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//will actually be used. For example, a display might choose to acquire
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//3 pipe objects in one shot and proceed with config only if it gets all
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//3. The bitmap helps allocate different pipe objects on each request.
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static int sAllocatedBitmap;
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};
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PipeBook mPipeBook[utils::OV_INVALID]; //Used as max
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/* Dump string */
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char mDumpStr[1024];
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/* Singleton Instance*/
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static Overlay *sInstance;
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static int sDpyFbMap[DPY_MAX];
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static int sDMAMode;
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static int sForceSetBitmap;
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};
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inline void Overlay::validate(int index) {
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OVASSERT(index >=0 && index < PipeBook::NUM_PIPES, \
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"%s, Index out of bounds: %d", __FUNCTION__, index);
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OVASSERT(mPipeBook[index].valid(), "Pipe does not exist %s",
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PipeBook::getDestStr((utils::eDest)index));
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}
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inline int Overlay::availablePipes(int dpy, int mixer) {
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int avail = 0;
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for(int i = 0; i < PipeBook::NUM_PIPES; i++) {
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if( (mPipeBook[i].mDisplay == DPY_UNUSED ||
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mPipeBook[i].mDisplay == dpy) &&
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(mPipeBook[i].mMixer == MIXER_UNUSED ||
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mPipeBook[i].mMixer == mixer) &&
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PipeBook::isNotAllocated(i) &&
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!(Overlay::getDMAMode() == Overlay::DMA_BLOCK_MODE &&
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PipeBook::getPipeType((utils::eDest)i) ==
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utils::OV_MDP_PIPE_DMA)) {
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avail++;
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}
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}
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return avail;
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}
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inline int Overlay::availablePipes(int dpy) {
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int avail = 0;
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for(int i = 0; i < PipeBook::NUM_PIPES; i++) {
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if( (mPipeBook[i].mDisplay == DPY_UNUSED ||
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mPipeBook[i].mDisplay == dpy) &&
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PipeBook::isNotAllocated(i) &&
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!(Overlay::getDMAMode() == Overlay::DMA_BLOCK_MODE &&
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PipeBook::getPipeType((utils::eDest)i) ==
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utils::OV_MDP_PIPE_DMA)) {
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avail++;
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}
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}
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return avail;
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}
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inline int Overlay::availablePipes(int dpy, utils::eMdpPipeType type) {
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int avail = 0;
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for(int i = 0; i < PipeBook::NUM_PIPES; i++) {
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if((mPipeBook[i].mDisplay == DPY_UNUSED ||
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mPipeBook[i].mDisplay == dpy) &&
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PipeBook::isNotAllocated(i) &&
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type == PipeBook::getPipeType((utils::eDest)i)) {
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avail++;
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}
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}
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return avail;
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}
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inline void Overlay::setDMAMode(const int& mode) {
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if(mode == DMA_LINE_MODE || mode == DMA_BLOCK_MODE)
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sDMAMode = mode;
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}
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inline int Overlay::getDMAMode() {
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return sDMAMode;
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}
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inline int Overlay::getFbForDpy(const int& dpy) {
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OVASSERT(dpy >= 0 && dpy < DPY_MAX, "Invalid dpy %d", dpy);
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return sDpyFbMap[dpy];
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}
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inline void Overlay::forceSet(const int& dpy) {
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sForceSetBitmap |= (1 << dpy);
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}
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inline bool Overlay::PipeBook::valid() {
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return (mPipe != NULL);
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}
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inline bool Overlay::PipeBook::pipeUsageUnchanged() {
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return (sPipeUsageBitmap == sLastUsageBitmap);
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}
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inline void Overlay::PipeBook::setUse(int index) {
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sPipeUsageBitmap |= (1 << index);
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}
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inline void Overlay::PipeBook::resetUse(int index) {
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sPipeUsageBitmap &= ~(1 << index);
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}
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inline bool Overlay::PipeBook::isUsed(int index) {
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return sPipeUsageBitmap & (1 << index);
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}
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inline bool Overlay::PipeBook::isNotUsed(int index) {
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return !isUsed(index);
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}
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inline void Overlay::PipeBook::save() {
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sLastUsageBitmap = sPipeUsageBitmap;
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}
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inline void Overlay::PipeBook::setAllocation(int index) {
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sAllocatedBitmap |= (1 << index);
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}
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inline void Overlay::PipeBook::resetAllocation(int index) {
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sAllocatedBitmap &= ~(1 << index);
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}
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inline bool Overlay::PipeBook::isAllocated(int index) {
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return sAllocatedBitmap & (1 << index);
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}
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inline bool Overlay::PipeBook::isNotAllocated(int index) {
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return !isAllocated(index);
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}
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inline utils::eMdpPipeType Overlay::PipeBook::getPipeType(utils::eDest dest) {
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return pipeTypeLUT[(int)dest];
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}
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inline const char* Overlay::PipeBook::getDestStr(utils::eDest dest) {
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switch(getPipeType(dest)) {
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case utils::OV_MDP_PIPE_RGB: return "RGB";
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case utils::OV_MDP_PIPE_VG: return "VG";
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case utils::OV_MDP_PIPE_DMA: return "DMA";
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default: return "Invalid";
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}
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return "Invalid";
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}
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}; // overlay
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#endif // OVERLAY_H
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