wmv9_xforms.c

au1200 linux2.6.11 硬件解码mae驱动和maiplayer播放器源码

/* <LIC_AMD_STD>
 * Copyright (C) 2003-2005 Advanced Micro Devices, Inc.  All Rights Reserved.
 * 
 * Unless otherwise designated in writing, this software and any related 
 * documentation are the confidential proprietary information of AMD. 
 * THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT ANY
 * UNLESS OTHERWISE NOTED IN WRITING, EXPRESS OR IMPLIED WARRANTY OF ANY 
 * KIND, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, 
 * NONINFRINGEMENT, TITLE, FITNESS FOR ANY PARTICULAR PURPOSE AND IN NO 
 * EVENT SHALL AMD OR ITS LICENSORS BE LIABLE FOR ANY DAMAGES WHATSOEVER. 
 * 
 * AMD does not assume any responsibility for any errors which may appear 
 * in the Materials nor any responsibility to support or update the
 * Materials.  AMD retains the right to modify the Materials at any time, 
 * without notice, and is not obligated to provide such modified 
 * Materials to you. AMD is not obligated to furnish, support, or make
 * any further information available to you.
 * </LIC_AMD_STD>  */
/* <CTL_AMD_STD>
 * </CTL_AMD_STD>  */
/* <DOC_AMD_STD>
 * </DOC_AMD_STD>  */
/*
** nsc_idct.c
**   IDCT and other Transform routines.
**
**   (c) National Semiconductor Corp., 2003
*/
#include "wmv9_xforms.h"
#include "mae_vpi.h"
#include "mae_fe.h"
#include "types.h"
#include <stdio.h> // for printf
#define DP_L4(x) //NSC_DebugPrintf x

#define NSC_OPT
#define COMBINE_STAGES
#define COMBINE_STAGES_TOP
#define COMBINE_STAGES_BOTTOM

#define  W0         12
#define  W1         16
#define  W3         15
#define  W5         9
#define  W7         4

#define  W1_W7      12
#define  W1pW7      20
#define  W3_W5      6
#define  W3pW5      24

#define  W1a        22
#define  W2a        17
#define  W3a        10

#define  W2         16

#ifndef BIORTHOGONAL
#define  W2A        16
#define  W6         6
#define  W2pW6      22
#define  W2_W6      10
#else
#define  W2A        15
#define  W6         7
#define  W2pW6      23
#define  W2_W6      9
#endif


//***************************************
// EricS - THIS IS USED IN C-MODEL
//***************************************

// This function was adapted from the WMV9 Inverse Transform function
// taken from Microsoft's documentation. - g_IDCTDec16_WMV3

/* MAE_IDCT8x8_16_16_WMV3
** Desc:   Full 8x8 IDCT modified for WMV3
** Input:  16-bit
** Output: 16-bit
*/
void MAE_IDCT8x8_16_16_WMV3(n_s16 *piSrc, n_u32 iSrcStride, n_s16 *piDst, n_u32 iDstStride, n_u16 iDCTHorzFlags, n_s32 block_number, n_u32 exp_bc)
{

//***************************************
// EricS - THIS IS NOT USED IN C-MODEL
//***************************************
#if (defined(NSC_OPT) && defined(__TCS__)) // This works, but it is slower due to cache issues
  /* NSC Optimized version */
  n_s32 * __restrict rgiCoefRecon = (n_s32*)piSrc;

  // These 32 variables hold the results of pass 1 and used in pass 2 (an 8