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frames.h
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1993-09-27
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/*===========================================================================*
* frames.h *
* *
* stuff dealing with frames *
* *
*===========================================================================*/
/*
* Copyright (c) 1993 The Regents of the University of California.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
/*
* $Header: /n/picasso/users/keving/encode/src/headers/RCS/frames.h,v 1.5 1993/07/22 22:24:23 keving Exp keving $
* $Log: frames.h,v $
* Revision 1.5 1993/07/22 22:24:23 keving
* nothing
*
* Revision 1.4 1993/07/09 00:17:23 keving
* nothing
*
* Revision 1.3 1993/06/03 21:08:53 keving
* nothing
*
* Revision 1.2 1993/03/02 19:00:27 keving
* nothing
*
* Revision 1.1 1993/02/19 20:15:51 keving
* nothing
*
*/
/*==============*
* HEADER FILES *
*==============*/
#include "ansi.h"
#include "mtypes.h"
#include "mheaders.h"
#include "frame.h"
/*===========*
* CONSTANTS *
*===========*/
#define I_FRAME 1
#define P_FRAME 2
#define B_FRAME 3
#define LUM_BLOCK 0
#define CHROM_BLOCK 1
#define CR_BLOCK 2
#define CB_BLOCK 3
#define MOTION_FORWARD 0
#define MOTION_BACKWARD 1
#define MOTION_INTERPOLATE 2
#define USE_HALF 0
#define USE_FULL 1
/* motion vector stuff */
#define FORW_F_CODE fCode /* from picture header */
#define BACK_F_CODE fCode
#define FORW_F (1 << (FORW_F_CODE - 1))
#define BACK_F (1 << (BACK_F_CODE - 1))
#define RANGE_NEG (-(1 << (3 + FORW_F_CODE)))
#define RANGE_POS ((1 << (3 + FORW_F_CODE))-1)
#define MODULUS (1 << (4 + FORW_F_CODE))
#define ORIGINAL_FRAME 0
#define DECODED_FRAME 1
/*=======================*
* STRUCTURE DEFINITIONS *
*=======================*/
typedef struct FrameTableStruct {
MpegFrame *frame; /* this changes during execution */
/* the following are all initted once and never changed */
/* (they depend only on the pattern */
struct FrameTableStruct *next;
struct FrameTableStruct *prev;
/* nextOutput is a pointer to next frame table entry to output */
struct FrameTableStruct *nextOutput;
boolean freeNow; /* TRUE iff no frames point back to this */
int number;
int bFrameNumber; /* actual frame number, if a b-frame */
} FrameTable;
/*==================*
* TYPE DEFINITIONS *
*==================*/
/* none */
void EncodeYDC _ANSI_ARGS_((int16 dc_term, int32 *pred_term, BitBucket *bb));
void EncodeCDC _ANSI_ARGS_((int16 dc_term, int32 *pred_term, BitBucket *bb));
/*========*
* MACROS *
*========*/
#define FRAME_TYPE(num) framePattern[num % framePatternLen]
/* return ceiling(a/b) where a, b are ints, using temp value c */
#define int_ceil_div(a,b,c) ((b*(c = a/b) < a) ? (c+1) : c)
#define int_floor_div(a,b,c) ((b*(c = a/b) > a) ? (c-1) : c)
#define COMPUTE_BLOCK(block, qscale, n) { \
Mpost_QuantZigBlock(block, fb[n], qscale, TRUE); \
EncodeYDC(fb[n][0], &y_dc_pred, bb); \
Mpost_RLEHuffIBlock(fb[n], bb); \
}
/* assumes many things:
* block indices are (y,x)
* variables y_dc_pred, cr_dc_pred, and cb_dc_pred
* flat block fb exists
*/
#define GEN_I_BLOCK(frameType, frame, bb, mbAI, qscale) { \
Mhead_GenMBHeader(bb, \
frameType /* pict_code_type */, mbAI /* addr_incr */, \
0 /* mb_quant */, 0 /* q_scale */, \
0 /* forw_f_code */, 0 /* back_f_code */, \
0 /* horiz_forw_r */, 0 /* vert_forw_r */, \
0 /* horiz_back_r */, 0 /* vert_back_r */, \
0 /* motion_forw */, 0 /* m_horiz_forw */, \
0 /* m_vert_forw */, 0 /* motion_back */, \
0 /* m_horiz_back */, 0 /* m_vert_back */, \
0 /* mb_pattern */, 1 /* mb_intra */); \
\
/* Y blocks */ \
COMPUTE_BLOCK(frame->y_blocks[y][x], qscale, 0); \
COMPUTE_BLOCK(frame->y_blocks[y][x+1], qscale, 1); \
COMPUTE_BLOCK(frame->y_blocks[y+1][x], qscale, 2); \
COMPUTE_BLOCK(frame->y_blocks[y+1][x+1], qscale, 3); \
\
/* CB block */ \
Mpost_QuantZigBlock(frame->cb_blocks[y >> 1][x >> 1], fb[4], qscale, TRUE); \
EncodeCDC(fb[4][0], &cb_dc_pred, bb); \
Mpost_RLEHuffIBlock(fb[4], bb); \
\
/* CR block */ \
Mpost_QuantZigBlock(frame->cr_blocks[y >> 1][x >> 1], fb[5], qscale, TRUE); \
EncodeCDC(fb[5][0], &cr_dc_pred, bb); \
Mpost_RLEHuffIBlock(fb[5], bb); \
}
#define BLOCK_TO_FRAME_COORD(bx1, bx2, x1, x2) { \
x1 = (bx1)*DCTSIZE; \
x2 = (bx2)*DCTSIZE; \
}
#define MOTION_TO_FRAME_COORD(bx1, bx2, mx1, mx2, x1, x2) { \
x1 = (bx1)*DCTSIZE+(mx1); \
x2 = (bx2)*DCTSIZE+(mx2); \
}
#define COORD_IN_FRAME(fy,fx, type) \
((type == LUM_BLOCK) ? \
((fy >= 0) && (fx >= 0) && (fy < Fsize_y) && (fx < Fsize_x)) : \
((fy >= 0) && (fx >= 0) && (fy < Fsize_y/2) && (fx < Fsize_x/2)))
#define ENCODE_MOTION_VECTOR(x,y,xq, yq, xr, yr, f) { \
int tempC; \
\
if ( x < RANGE_NEG ) tempX = x + MODULUS; \
else if ( x > RANGE_POS ) tempX = x - MODULUS; \
else tempX = x; \
\
if ( y < RANGE_NEG ) tempY = y + MODULUS; \
else if ( y > RANGE_POS ) tempY = y - MODULUS; \
else tempY = y; \
\
if ( tempX >= 0 ) { \
xq = int_ceil_div(tempX, f, tempC); \
xr = f - 1 + tempX - xq*f; \
} else { \
xq = int_floor_div(tempX, f, tempC); \
xr = f - 1 - tempX + xq*f; \
} \
\
if ( tempY >= 0 ) { \
yq = int_ceil_div(tempY, f, tempC); \
yr = f - 1 + tempY - yq*f; \
} else { \
yq = int_floor_div(tempY, f, tempC); \
yr = f - 1 - tempY + yq*f; \
} \
}
/*===============================*
* EXTERNAL PROCEDURE prototypes *
*===============================*/
void ComputeBMotionLumBlock _ANSI_ARGS_((MpegFrame *prev, MpegFrame *next,
int by, int bx, int mode, int fmy, int fmx,
int bmy, int bmx, LumBlock motionBlock));
int BMotionSearch _ANSI_ARGS_((LumBlock currentBlock, MpegFrame *prev, MpegFrame *next,
int by, int bx, int *fmy, int *fmx, int *bmy, int *bmx, int oldMode));
void ComputeDiffDCTs _ANSI_ARGS_((MpegFrame *current, MpegFrame *prev, int by, int bx,
int my, int mx, int pattern));
void ComputeDiffDCTBlock _ANSI_ARGS_((Block current, Block motionBlock));
void ComputeMotionBlock _ANSI_ARGS_((uint8 **prev, int by, int bx, int my, int mx,
Block motionBlock));
void ComputeMotionLumBlock _ANSI_ARGS_((MpegFrame *prevFrame, int by,
int bx, int my, int mx,
LumBlock motionBlock));
int32 ComputeBlockMAD _ANSI_ARGS_((Block current, Block prev));
void GenIFrame _ANSI_ARGS_((BitBucket *bb, MpegFrame *mf));
void GenPFrame _ANSI_ARGS_((BitBucket *bb, MpegFrame *current, MpegFrame *prev));
void GenBFrame _ANSI_ARGS_((BitBucket *bb, MpegFrame *curr, MpegFrame *prev, MpegFrame *next));
void ShowIFrameSummary _ANSI_ARGS_((int inputFrameBits, int32 totalBits, FILE *fpointer));
void ShowPFrameSummary _ANSI_ARGS_((int inputFrameBits, int32 totalBits, FILE *fpointer));
void ShowBFrameSummary _ANSI_ARGS_((int inputFrameBits, int32 totalBits, FILE *fpointer));
/* DIFFERENCE FUNCTIONS */
int32 LumBlockMAD _ANSI_ARGS_((LumBlock currentBlock, LumBlock motionBlock, int32 bestSoFar));
int32 LumBlockMSE _ANSI_ARGS_((LumBlock currentBlock, LumBlock motionBlock, int32 bestSoFar));
int32 LumMotionError _ANSI_ARGS_((LumBlock currentBlock, MpegFrame *prev,
int by, int bx, int my, int mx,
int32 bestSoFar));
int32 LumAddMotionError _ANSI_ARGS_((LumBlock currentBlock,
LumBlock blockSoFar, MpegFrame *prev,
int by, int bx, int my, int mx,
int32 bestSoFar));
int32 LumMotionErrorA _ANSI_ARGS_((LumBlock current, MpegFrame *prevFrame,
int by, int bx, int my, int mx,
int32 bestSoFar));
int32 LumMotionErrorB _ANSI_ARGS_((LumBlock current, MpegFrame *prevFrame,
int by, int bx, int my, int mx,
int32 bestSoFar));
int32 LumMotionErrorC _ANSI_ARGS_((LumBlock current, MpegFrame *prevFrame,
int by, int bx, int my, int mx,
int32 bestSoFar));
int32 LumMotionErrorD _ANSI_ARGS_((LumBlock current, MpegFrame *prevFrame,
int by, int bx, int my, int mx,
int32 bestSoFar));
int32 LumMotionErrorSubSampled _ANSI_ARGS_((LumBlock currentBlock, MpegFrame *prevFrame,
int by, int bx, int my, int mx,
int startY, int startX));
void ComputeSNR _ANSI_ARGS_((uint8 **origData, uint8 **newData,
int ySize, int xSize,
float *snr, float *psnr));
/*==================*
* GLOBAL VARIABLES *
*==================*/
extern int pixelFullSearch;
extern int searchRange;
extern int qscaleI;
extern int gopSize;
extern int slicesPerFrame;
extern int blocksPerSlice;
extern FrameTable *frameTable;
extern int referenceFrame;
extern int quietTime; /* shut up for at least quietTime seconds;
* negative means shut up forever
*/
extern boolean frameSummary; /* TRUE = frame summaries should be printed */
extern boolean printSNR;
extern boolean decodeRefFrames; /* TRUE = should decode I and P frames */
extern int fCode;