/*===========================================================================* * frames.h * * stuff dealing with frames * *===========================================================================*/ #ifndef FRAMES_INCLUDED #define FRAMES_INCLUDED /*==============* * HEADER FILES * *==============*/ #include "pm_config.h" /* For __inline__ */ #include "mtypes.h" #include "mheaders.h" #include "iframe.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 { /* the following are all initted once and never changed */ /* (they depend only on the pattern */ char typ; 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 * *==================*/ typedef struct dct_data_tye_struct { char useMotion; char pattern, mode; int fmotionX, fmotionY, bmotionX, bmotionY; } dct_data_type; /*==================* * GLOBAL VARIABLES * *==================*/ extern Block **dct, **dctr, **dctb; extern dct_data_type **dct_data; /*========* * MACROS * *========*/ /* 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 BLOCK_TO_FRAME_COORD(bx1, bx2, x1, x2) { \ x1 = (bx1)*DCTSIZE; \ x2 = (bx2)*DCTSIZE; \ } static __inline__ void MotionToFrameCoord(int const by, int const bx, int const my, int const mx, int * const yP, int * const xP) { /*---------------------------------------------------------------------------- Given a DCT block location and a motion vector, return the pixel coordinates to which the upper left corner of the block moves. Return negative coordinates if it moves out of frame. -----------------------------------------------------------------------------*/ *yP = by * DCTSIZE + my; *xP = bx * DCTSIZE + mx; } #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>>1)) && (fx < (Fsize_x>>1)))) static __inline__ void encodeMotionVector(int const x, int const y, vector * const qP, vector * const rP, int const f, int const fCode) { int tempX; int tempY; 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) { qP->x = int_ceil_div(tempX, f, tempC); rP->x = f - 1 + tempX - qP->x*f; } else { qP->x = int_floor_div(tempX, f, tempC); rP->x = f - 1 - tempX + qP->x*f; } if (tempY >= 0) { qP->y = int_ceil_div(tempY, f, tempC); rP->y = f - 1 + tempY - qP->y*f; } else { qP->y = int_floor_div(tempY, f, tempC); rP->y = f - 1 - tempY + qP->y*f; } } #define DoQuant(bit, src, dest) \ if (pattern & bit) { \ switch (Mpost_QuantZigBlock(src, dest, QScale, FALSE)) { \ case MPOST_NON_ZERO: \ break; \ case MPOST_ZERO: \ pattern ^= bit; \ break; \ case MPOST_OVERFLOW: \ if (QScale != 31) { \ QScale++; \ overflowChange = TRUE; \ overflowValue++; \ goto calc_blocks; \ } \ break; \ } \ } /*===============================* * EXTERNAL PROCEDURE prototypes * *===============================*/ void AllocDctBlocks(void); void ComputeBMotionLumBlock(MpegFrame * const prev, MpegFrame * const next, int const by, int const bx, int const mode, motion const motion, LumBlock * const motionBlockP); int BMotionSearch(const LumBlock * const currentBlockP, MpegFrame * const prev, MpegFrame * const next, int const by, int const bx, motion * const motionP, int const oldMode); void GenPFrame (BitBucket * const bb, MpegFrame * const current, MpegFrame * const prev); void GenBFrame (BitBucket * const bb, MpegFrame * const curr, MpegFrame * const prev, MpegFrame * const next); float PFrameTotalTime(void); float BFrameTotalTime(void); void ShowPFrameSummary(unsigned int const inputFrameBits, unsigned int const totalBits, FILE * const fpointer); void ShowBFrameSummary(unsigned int const inputFrameBits, unsigned int const totalBits, FILE * const fpointer); /*==================* * GLOBAL VARIABLES * *==================*/ extern int pixelFullSearch; extern int searchRangeP,searchRangeB; /* defined in psearch.c */ extern int qscaleI; extern int gopSize; extern int slicesPerFrame; extern int blocksPerSlice; extern int referenceFrame; extern int quietTime; /* shut up for at least quietTime seconds; * negative means shut up forever */ extern boolean realQuiet; /* TRUE = no messages to stdout */ extern boolean frameSummary; /* TRUE = frame summaries should be printed */ extern boolean printSNR; extern boolean printMSE; extern boolean decodeRefFrames; /* TRUE = should decode I and P frames */ extern int fCodeI,fCodeP,fCodeB; extern boolean forceEncodeLast; extern int TIME_RATE; #endif /* * Copyright (c) 1995 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/project/mpeg/mpeg_dist/mpeg_encode/headers/RCS/frames.h,v 1.13 1995/08/15 23:43:04 smoot Exp $ * $Log: frames.h,v $ * Revision 1.13 1995/08/15 23:43:04 smoot * *** empty log message *** * * Revision 1.12 1995/04/14 23:13:18 smoot * Reorganized for better rate control. Added overflow in DCT values * handling. * * Revision 1.11 1995/01/19 23:54:46 smoot * allow computediffdcts to un-assert parts of the pattern * * Revision 1.10 1995/01/16 07:43:10 eyhung * Added realQuiet * * Revision 1.9 1995/01/10 23:15:28 smoot * Fixed searchRange lack of def * * Revision 1.8 1994/11/15 00:55:36 smoot * added printMSE * * Revision 1.7 1994/11/14 22:51:02 smoot * added specifics flag. Added BlockComputeSNR parameters * * Revision 1.6 1994/11/01 05:07:23 darryl * with rate control changes added * * Revision 1.1 1994/09/27 01:02:55 darryl * Initial revision * * 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 * */