/*===========================================================================* * 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. */ #ifndef __FRAMES__ #define __FRAMES__ /*==============* * HEADER FILES * *==============*/ #include "ansi.h" #include "mtypes.h" #include "mheaders.h" #include "basic_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 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; \ } \ } /*==================* * FUNCTION PROTOS * *==================*/ extern void ComputeSNR _ANSI_ARGS_((register uint8 **origData, register 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; #endif