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90 lines
2.7 KiB
90 lines
2.7 KiB
4 months ago
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/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* Not a Contribution, Apache license notifications and license are
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* retained for attribution purposes only.
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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_EXTERNAL_DISPLAY_H
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#define HWC_EXTERNAL_DISPLAY_H
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#include <linux/fb.h>
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struct hwc_context_t;
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struct msm_hdmi_mode_timing_info;
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namespace qhwc {
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//Type of scanning of EDID(Video Capability Data Block)
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enum external_scansupport_type {
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EXT_SCAN_NOT_SUPPORTED = 0,
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EXT_SCAN_ALWAYS_OVERSCANED = 1,
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EXT_SCAN_ALWAYS_UNDERSCANED = 2,
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EXT_SCAN_BOTH_SUPPORTED = 3
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};
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class ExternalDisplay
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{
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public:
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ExternalDisplay(hwc_context_t* ctx);
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~ExternalDisplay();
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void setHPD(uint32_t startEnd);
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void setActionSafeDimension(int w, int h);
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bool isCEUnderscanSupported() { return mUnderscanSupported; }
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int configure();
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void getAttributes(int& width, int& height);
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int teardown();
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bool isConnected() {
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return mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].connected;
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}
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private:
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int getModeCount() const;
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void getEDIDModes(int *out) const;
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void setEDIDMode(int resMode);
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void setSPDInfo(const char* node, const char* property);
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void readCEUnderscanInfo();
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bool readResolution();
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int parseResolution(char* edidStr, int* edidModes);
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void setResolution(int ID);
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bool openFrameBuffer();
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bool closeFrameBuffer();
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bool writeHPDOption(int userOption) const;
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bool isValidMode(int ID);
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int getModeOrder(int mode);
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int getUserMode();
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int getBestMode();
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bool isInterlacedMode(int mode);
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void resetInfo();
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void setAttributes();
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void getAttrForMode(int& width, int& height, int& fps);
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int mFd;
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int mFbNum;
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int mCurrentMode;
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int mEDIDModes[64];
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int mModeCount;
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bool mUnderscanSupported;
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hwc_context_t *mHwcContext;
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fb_var_screeninfo mVInfo;
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// Holds all the HDMI modes and timing info supported by driver
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msm_hdmi_mode_timing_info* supported_video_mode_lut;
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};
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}; //qhwc
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// ---------------------------------------------------------------------------
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#endif //HWC_EXTERNAL_DISPLAY_H
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