88becef139
Modified TCL file, source files, and renamed example.c as scaler_example.c Signed-off-by: Durga challa <vnsldurg@xilinx.com>
349 lines
10 KiB
C
Executable file
349 lines
10 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2009 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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*
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* @file scaler_example.c
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*
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* This file demonstrates how to use Xilinx XScaler driver on Xilinx MVI Video
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* Scaler core. This code does not cover the Video DMA (VDMA) setup and any
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* other configuration which might be required to get the Scaler working
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* properly.
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*
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* This code makes the following assumptions:
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* - Caching is disabled. Flushing and Invalidation operations for data buffer
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* need to be added to this code if it is not the case.
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- --- -------- ------------------------------------------------------
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* 1.00a xd 02/09/09 First release
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* 7.00 adk 22/08/14 Renamed example.c to scaler_example.c
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* XPAR_SCALER_0_DEVICE_ID is changed to
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* XPAR_XSCALER_0_DEVICE_ID.
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* Chaged typecast of XScaler_CoefValueLookup from u16 to
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* s16.
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* </pre>
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*
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*****************************************************************************/
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#include "xscaler.h"
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#include "xparameters.h"
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/*
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* Device related constants. Defined in xparameters.h.
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*/
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#define SCALER_DEVICE_ID XPAR_XSCALER_0_DEVICE_ID
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/*
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* Index of Coefficient Set to load and use
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*/
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#define COEFF_SET_INDEX 0
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/*
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* Scaler Device related data structures
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*/
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XScaler ScalerInstance; /* Device driver instance */
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XScalerAperture Aperture; /* Aperture setting */
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XScalerStartFraction StartFraction; /* Luma/Chroma Start Fraction setting*/
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XScalerCoeffBank CoeffBank; /* Coefficient bank */
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static int ScalerExample(u16 ScalerDeviceID);
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static void DownScale(XScaler *ScalerInstPtr);
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static void UpScale(XScaler *ScalerInstPtr);
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static void ScalerSetup(XScaler *ScalerInstPtr,
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int ScalerInWidth, int ScalerInHeight,
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int ScalerOutWidth, int ScalerOutHeight);
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/*****************************************************************************/
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/**
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*
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* This is the main function for the Scaler example. This function is not
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* included if the example is generated from the TestAppGen test tool.
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*
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* @param None.
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*
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* @return 0 to indicate success, otherwise 1.
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*
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* @note None.
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*
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****************************************************************************/
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int main(void)
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{
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int Status;
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/*
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* Call the Scaler example , specify the Device ID generated in
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* xparameters.h
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*/
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Status = ScalerExample(SCALER_DEVICE_ID);
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if (Status != 0) {
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return 1;
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}
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printf("\n Successfully ran Scaler example \n");
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return 0;
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}
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/*****************************************************************************/
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/**
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*
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* This function is the entry of the feature demonstrations on MVI Video Scaler
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* core. It initializes the Scaler device, then starts operations like
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* format downscaling and format up scaling.
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*
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* @param ScalerDeviceID is the device ID of the scaler core.
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*
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* @return 0 if all tests pass, 1 otherwise.
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*
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* @note None.
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*
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******************************************************************************/
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static int ScalerExample(u16 ScalerDeviceID)
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{
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int Status;
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XScaler_Config *ScalerCfgPtr;
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u32 Rdy;
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/* Initialize the Scaler instance */
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ScalerCfgPtr = XScaler_LookupConfig(ScalerDeviceID);
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Status = XScaler_CfgInitialize(&ScalerInstance, ScalerCfgPtr,
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ScalerCfgPtr->BaseAddress);
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if (Status) {
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return 1;
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}
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/* DownScaling example */
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DownScale(&ScalerInstance);
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/* UpScaling example */
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UpScale(&ScalerInstance);
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/* All tests passed. Return success */
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return 0;
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}
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/*****************************************************************************/
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/**
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*
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* This function shows the downscaling feature. This function downscales the
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* video format from 1280x720 to 640x480.
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*
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* @param ScalerInstPtr is the pointer to the instance of the Scaler
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* device.
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*
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* @return None
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*
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* @note None.
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*
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******************************************************************************/
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static void DownScale(XScaler *ScalerInstPtr)
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{
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int InWidth, InHeight, OutWidth, OutHeight;
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InWidth = 1280;
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InHeight = 720;
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OutWidth = 640;
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OutHeight = 480;
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ScalerSetup (ScalerInstPtr, InWidth, InHeight, OutWidth, OutHeight);
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return;
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}
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/*****************************************************************************/
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/**
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*
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* This function shows the up scaling feature. This function up scales the
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* video format from 640x480 to 1280x720.
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*
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* @param ScalerInstPtr is the pointer to the instance of the Scaler
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* device.
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*
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* @return None
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*
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* @note None.
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*
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******************************************************************************/
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static void UpScale(XScaler *ScalerInstPtr)
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{
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int InWidth, InHeight, OutWidth, OutHeight;
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InWidth = 640;
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InHeight = 480;
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OutWidth = 1280;
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OutHeight = 720;
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ScalerSetup (ScalerInstPtr, InWidth, InHeight, OutWidth, OutHeight);
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return;
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}
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/*****************************************************************************/
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/**
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*
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* This function sets up the scaler core for the feature demonstrations below.
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* After the execution of this function, a set of coefficient value (containing
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* 2 vertical and 2 horizontal coefficient banks) are loaded; aperture is set
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* up and the scaling operation is started. This function is utilized by
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* DownScale() and UpScale().
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*
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* @param ScalerInstPtr is the pointer to the instance of the Scaler
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* device.
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*
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* @param ScalerInWidth is the width of the input aperture.
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*
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* @param ScalerInHeight is the height of the input aperture.
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*
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* @param ScalerOutWidth is the width of the output aperture.
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*
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* @param ScalerOutHeight is the height of the output aperture.
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*
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* @return None.
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*
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* @note None.
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*
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******************************************************************************/
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static void ScalerSetup(XScaler *ScalerInstPtr,
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int ScalerInWidth, int ScalerInHeight,
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int ScalerOutWidth, int ScalerOutHeight)
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{
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int i;
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u8 ChromaFormat;
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u8 ChromaLumaShareCoeffBank;
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u8 HoriVertShareCoeffBank;
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/*
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* Disable the scaler before setup and tell the device not to pick up
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* the register updates until all are done
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*/
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XScaler_Disable(ScalerInstPtr);
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XScaler_DisableRegUpdate(ScalerInstPtr);
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/*
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* Load a set of Coefficient values
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*/
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/* Fetch Chroma Format and Coefficient sharing info */
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XScaler_GetCoeffBankSharingInfo(ScalerInstPtr,
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&ChromaFormat,
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&ChromaLumaShareCoeffBank,
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&HoriVertShareCoeffBank);
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CoeffBank.SetIndex = COEFF_SET_INDEX;
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CoeffBank.PhaseNum = ScalerInstPtr->Config.MaxPhaseNum;
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CoeffBank.TapNum = ScalerInstPtr->Config.VertTapNum;
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/* Locate coefficients for Horizontal scaling */
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CoeffBank.CoeffValueBuf = (u16 *)
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XScaler_CoefValueLookup(ScalerInWidth,
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ScalerOutWidth,
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CoeffBank.TapNum,
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CoeffBank.PhaseNum);
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/* Load coefficient bank for Horizontal Luma */
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XScaler_LoadCoeffBank(ScalerInstPtr, &CoeffBank);
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/* Horizontal Chroma bank is loaded only if chroma/luma sharing flag
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* is not set */
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if (!ChromaLumaShareCoeffBank)
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XScaler_LoadCoeffBank(ScalerInstPtr, &CoeffBank);
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/* Vertical coeff banks are loaded only if horizontal/vertical sharing
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* flag is not set
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*/
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if (!HoriVertShareCoeffBank) {
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/* Locate coefficients for Vertical scaling */
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CoeffBank.CoeffValueBuf = (u16 *)
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XScaler_CoefValueLookup(ScalerInHeight,
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ScalerOutHeight,
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CoeffBank.TapNum,
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CoeffBank.PhaseNum);
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/* Load coefficient bank for Vertical Luma */
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XScaler_LoadCoeffBank(ScalerInstPtr, &CoeffBank);
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/* Vertical Chroma coeff bank is loaded only if chroma/luma
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* sharing flag is not set
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*/
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if (!ChromaLumaShareCoeffBank)
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XScaler_LoadCoeffBank(ScalerInstPtr, &CoeffBank);
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}
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/*
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* Load phase-offsets into scaler
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*/
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StartFraction.LumaLeftHori = 0;
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StartFraction.LumaTopVert = 0;
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StartFraction.ChromaLeftHori = 0;
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StartFraction.ChromaTopVert = 0;
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XScaler_SetStartFraction(ScalerInstPtr, &StartFraction);
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/*
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* Set up Aperture.
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*/
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Aperture.InFirstLine = 0;
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Aperture.InLastLine = ScalerInHeight - 1;
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Aperture.InFirstPixel = 0;
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Aperture.InLastPixel = ScalerInWidth - 1;
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Aperture.OutVertSize = ScalerOutHeight;
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Aperture.OutHoriSize = ScalerOutWidth;
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Aperture.SrcVertSize = ScalerInHeight;
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Aperture.SrcHoriSize = ScalerInWidth;
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XScaler_SetAperture(ScalerInstPtr, &Aperture);
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/*
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* Set up phases
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*/
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XScaler_SetPhaseNum(ScalerInstPtr, ScalerInstPtr->Config.MaxPhaseNum,
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ScalerInstPtr->Config.MaxPhaseNum);
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/*
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* Choose active set indexes for both vertical and horizontal directions
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*/
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XScaler_SetActiveCoeffSet(ScalerInstPtr, COEFF_SET_INDEX,
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COEFF_SET_INDEX);
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/*
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* Enable the scaling operation
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*/
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XScaler_EnableRegUpdate(ScalerInstPtr);
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XScaler_Enable(ScalerInstPtr);
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return;
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}
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