/*===========================================================================* * frames.h * * stuff dealing with frames * *===========================================================================*/ #ifndef FRAMES_INCLUDED #define FRAMES_INCLUDED /*==============* * 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 { /* 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; void EncodeYDC _ANSI_ARGS_((int32 dc_term, int32 *pred_term, BitBucket *bb)); void EncodeCDC _ANSI_ARGS_((int32 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) /* 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) { \ boolean overflow, overflowChange=FALSE; \ int overflowValue = 0; \ do { \ overflow = Mpost_QuantZigBlock(dct[y][x], fb[0], \ qscale, TRUE)==MPOST_OVERFLOW; \ overflow |= Mpost_QuantZigBlock(dct[y][x+1], fb[1], \ qscale, TRUE)==MPOST_OVERFLOW; \ overflow |= Mpost_QuantZigBlock(dct[y+1][x], fb[2], \ qscale, TRUE)==MPOST_OVERFLOW; \ overflow |= Mpost_QuantZigBlock(dct[y+1][x+1], fb[3], \ qscale, TRUE)==MPOST_OVERFLOW; \ overflow |= Mpost_QuantZigBlock(dctb[y >> 1][x >> 1], \ fb[4], qscale, TRUE)==MPOST_OVERFLOW; \ overflow |= Mpost_QuantZigBlock(dctr[y >> 1][x >> 1], \ fb[5], qscale, TRUE)==MPOST_OVERFLOW; \ if ((overflow) && (qscale!=31)) { \ overflowChange = TRUE; overflowValue++; \ qscale++; \ } else overflow = FALSE; \ } while (overflow); \ Mhead_GenMBHeader(bb, \ frameType /* pict_code_type */, mbAI /* addr_incr */, \ qscale /* 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 */, TRUE /* mb_intra */); \ \ /* Y blocks */ \ EncodeYDC(fb[0][0], &y_dc_pred, bb); \ Mpost_RLEHuffIBlock(fb[0], bb); \ EncodeYDC(fb[1][0], &y_dc_pred, bb); \ Mpost_RLEHuffIBlock(fb[1], bb); \ EncodeYDC(fb[2][0], &y_dc_pred, bb); \ Mpost_RLEHuffIBlock(fb[2], bb); \ EncodeYDC(fb[3][0], &y_dc_pred, bb); \ Mpost_RLEHuffIBlock(fb[3], bb); \ \ /* CB block */ \ EncodeCDC(fb[4][0], &cb_dc_pred, bb); \ Mpost_RLEHuffIBlock(fb[4], bb); \ \ /* CR block */ \ EncodeCDC(fb[5][0], &cr_dc_pred, bb); \ Mpost_RLEHuffIBlock(fb[5], bb); \ if (overflowChange) qscale -= overflowValue; \ } #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>>1)) && (fx < (Fsize_x>>1)))) #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; \ } \ } #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 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)); int ComputeDiffDCTBlock _ANSI_ARGS_((Block current, Block dest, 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 AllocDctBlocks _ANSI_ARGS_((void )); float ShowIFrameSummary _ANSI_ARGS_((int inputFrameBits, int32 totalBits, FILE *fpointer)); float ShowPFrameSummary _ANSI_ARGS_((int inputFrameBits, int32 totalBits, FILE *fpointer)); float 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 BlockComputeSNR _ANSI_ARGS_((MpegFrame *current, float *snr, float *psnr)); int32 time_elapsed _ANSI_ARGS_((void)); void AllocDctBlocks _ANSI_ARGS_((void)); /*==================* * 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 specificsOn; 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 /* FRAMES_INCLUDED */ /* * 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 * */