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Revision 1.25 - (download) (annotate)
Tue Sep 13 12:12:15 2005 UTC (14 years, 1 month ago) by suxen_drol
Branch: MAIN
CVS Tags: release-1_1_3-final, release-1_1_0, release-1_1_3, release-1_1_2, release-1_2_2, release-1_1_1-final, release-1_2_0, release-1_1_0_final, tag-branching-1_2_0
Branch point for: release-1_1-branch, release-1_2-branch
Changes since 1.24: +8 -0 lines
Field interlaced decoding, contributed by Christoph Kuehnel

decoder.c
=========
- Some new defines for DIV
- <decoder_mb_decode> modified: had wrong address offsets for interlaced
- <decoder_mbinter_field> = new function for interlaced
- <get_motion_vector_interlaced> = new function for interlaced motion vector prediction
- <decoder_pframe> modified so that it differs between frame and field prediction

global.h
========
- For field motion prediction MACORBLOCK has new member that is the average of
  field1 and field2 motion vector = <mvs_avg>

xvid.c
======
- For field predicted macroblocks we need new field oriented transfer functions.
  For colour calculations they may only process 4 lines (one field from the colour
  macroblock that is 8x8). So I introduced 4 new function pointers:
  <transfer8x4_copy, interpolate8x4_ ...)

mbcoding.c
==========
- _DEBUG code; index is checked against 64

interpolate8x8.[c,h,asm]
===========================
- New 8x4 functions

mbpredicition.[c,h]
===============
- New function <get_pmv2_interlaced> for interlaced prediciton according to spec

mem_transfer.[c,h,asm]
==============
- New 8x4 function
/*****************************************************************************
 *
 *  XVID MPEG-4 VIDEO CODEC
 *  - Prediction header -
 *
 *  Copyright(C) 2002-2003 xvid team <xvid-devel@xvid.org>
 *
 *  This program is free software ; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation ; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY ; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program ; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 * $Id: mbprediction.h,v 1.25 2005/09/13 12:12:15 suxen_drol Exp $
 *
 ****************************************************************************/


#ifndef _MBPREDICTION_H_
#define _MBPREDICTION_H_

#include "../portab.h"
#include "../decoder.h"
#include "../global.h"

#define MIN(X, Y) ((X)<(Y)?(X):(Y))
#define MAX(X, Y) ((X)>(Y)?(X):(Y))

/* very large value */
#define MV_MAX_ERROR	(4096 * 256)

#define MVequal(A,B) ( ((A).x)==((B).x) && ((A).y)==((B).y) )

void MBPrediction(FRAMEINFO * frame,	/* <-- The parameter for ACDC and MV prediction */
				uint32_t x_pos,	/* <-- The x position of the MB to be searched	*/
				uint32_t y_pos,	/* <-- The y position of the MB to be searched	*/
				uint32_t x_dim,	/* <-- Number of macroblocks in a row		*/
				int16_t * qcoeff);	/* <-> The quantized DCT coefficients	*/

void add_acdc(MACROBLOCK * pMB,
			uint32_t block,
			int16_t dct_codes[64],
			uint32_t iDcScaler,
			int16_t predictors[8],
			const int bsversion);

void predict_acdc(MACROBLOCK * pMBs,
				uint32_t x,
				uint32_t y,
				uint32_t mb_width,
				uint32_t block,
				int16_t qcoeff[64],
				uint32_t current_quant,
				int32_t iDcScaler,
				int16_t predictors[8],
				const int bound);

VECTOR
get_pmv2(const MACROBLOCK * const mbs,
		const int mb_width,
		const int bound,
		const int x,
		const int y,
		const int block);

VECTOR
get_pmv2_interlaced(const MACROBLOCK * const mbs,
		const int mb_width,
		const int bound,
		const int x,
		const int y,
		const int block);

VECTOR
get_qpmv2(const MACROBLOCK * const mbs,
		const int mb_width,
		const int bound,
		const int x,
		const int y,
		const int block);

#endif							/* _MBPREDICTION_H_ */

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