From 22e28216336da876e1fd17f380ce42eaf1446769 Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Mon, 17 Feb 2014 13:36:38 +0000 Subject: chasing indexing error --- ffmpeg/libavcodec/ituh263enc.c | 839 ----------------------------------------- 1 file changed, 839 deletions(-) delete mode 100644 ffmpeg/libavcodec/ituh263enc.c (limited to 'ffmpeg/libavcodec/ituh263enc.c') diff --git a/ffmpeg/libavcodec/ituh263enc.c b/ffmpeg/libavcodec/ituh263enc.c deleted file mode 100644 index 2db9581..0000000 --- a/ffmpeg/libavcodec/ituh263enc.c +++ /dev/null @@ -1,839 +0,0 @@ -/* - * ITU H263 bitstream encoder - * Copyright (c) 2000,2001 Fabrice Bellard - * H263+ support. - * Copyright (c) 2001 Juan J. Sierralta P - * Copyright (c) 2002-2004 Michael Niedermayer - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * h263 bitstream encoder. - */ - -#include - -#include "libavutil/attributes.h" -#include "avcodec.h" -#include "mpegvideo.h" -#include "h263.h" -#include "mathops.h" -#include "unary.h" -#include "flv.h" -#include "mpeg4video.h" -#include "internal.h" - -/** - * Table of number of bits a motion vector component needs. - */ -static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1]; - -/** - * Minimal fcode that a motion vector component would need. - */ -static uint8_t fcode_tab[MAX_MV*2+1]; - -/** - * Minimal fcode that a motion vector component would need in umv. - * All entries in this table are 1. - */ -static uint8_t umv_fcode_tab[MAX_MV*2+1]; - -//unified encoding tables for run length encoding of coefficients -//unified in the sense that the specification specifies the encoding in several steps. -static uint8_t uni_h263_intra_aic_rl_len [64*64*2*2]; -static uint8_t uni_h263_inter_rl_len [64*64*2*2]; -//#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128 + (run)*256 + (level)) -//#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run) + (level)*64) -#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run)*128 + (level)) - -static const uint8_t wrong_run[102] = { - 1, 2, 3, 5, 4, 10, 9, 8, -11, 15, 17, 16, 23, 22, 21, 20, -19, 18, 25, 24, 27, 26, 11, 7, - 6, 1, 2, 13, 2, 2, 2, 2, - 6, 12, 3, 9, 1, 3, 4, 3, - 7, 4, 1, 1, 5, 5, 14, 6, - 1, 7, 1, 8, 1, 1, 1, 1, -10, 1, 1, 5, 9, 17, 25, 24, -29, 33, 32, 41, 2, 23, 28, 31, - 3, 22, 30, 4, 27, 40, 8, 26, - 6, 39, 7, 38, 16, 37, 15, 10, -11, 12, 13, 14, 1, 21, 20, 18, -19, 2, 1, 34, 35, 36 -}; - -/** - * Return the 4 bit value that specifies the given aspect ratio. - * This may be one of the standard aspect ratios or it specifies - * that the aspect will be stored explicitly later. - */ -av_const int ff_h263_aspect_to_info(AVRational aspect){ - int i; - - if(aspect.num==0) aspect= (AVRational){1,1}; - - for(i=1; i<6; i++){ - if(av_cmp_q(ff_h263_pixel_aspect[i], aspect) == 0){ - return i; - } - } - - return FF_ASPECT_EXTENDED; -} - -void ff_h263_encode_picture_header(MpegEncContext * s, int picture_number) -{ - int format, coded_frame_rate, coded_frame_rate_base, i, temp_ref; - int best_clock_code=1; - int best_divisor=60; - int best_error= INT_MAX; - - if(s->h263_plus){ - for(i=0; i<2; i++){ - int div, error; - div= (s->avctx->time_base.num*1800000LL + 500LL*s->avctx->time_base.den) / ((1000LL+i)*s->avctx->time_base.den); - div= av_clip(div, 1, 127); - error= FFABS(s->avctx->time_base.num*1800000LL - (1000LL+i)*s->avctx->time_base.den*div); - if(error < best_error){ - best_error= error; - best_divisor= div; - best_clock_code= i; - } - } - } - s->custom_pcf= best_clock_code!=1 || best_divisor!=60; - coded_frame_rate= 1800000; - coded_frame_rate_base= (1000+best_clock_code)*best_divisor; - - avpriv_align_put_bits(&s->pb); - - /* Update the pointer to last GOB */ - s->ptr_lastgob = put_bits_ptr(&s->pb); - put_bits(&s->pb, 22, 0x20); /* PSC */ - temp_ref= s->picture_number * (int64_t)coded_frame_rate * s->avctx->time_base.num / //FIXME use timestamp - (coded_frame_rate_base * (int64_t)s->avctx->time_base.den); - put_sbits(&s->pb, 8, temp_ref); /* TemporalReference */ - - put_bits(&s->pb, 1, 1); /* marker */ - put_bits(&s->pb, 1, 0); /* h263 id */ - put_bits(&s->pb, 1, 0); /* split screen off */ - put_bits(&s->pb, 1, 0); /* camera off */ - put_bits(&s->pb, 1, 0); /* freeze picture release off */ - - format = ff_match_2uint16(ff_h263_format, FF_ARRAY_ELEMS(ff_h263_format), s->width, s->height); - if (!s->h263_plus) { - /* H.263v1 */ - put_bits(&s->pb, 3, format); - put_bits(&s->pb, 1, (s->pict_type == AV_PICTURE_TYPE_P)); - /* By now UMV IS DISABLED ON H.263v1, since the restrictions - of H.263v1 UMV implies to check the predicted MV after - calculation of the current MB to see if we're on the limits */ - put_bits(&s->pb, 1, 0); /* Unrestricted Motion Vector: off */ - put_bits(&s->pb, 1, 0); /* SAC: off */ - put_bits(&s->pb, 1, s->obmc); /* Advanced Prediction */ - put_bits(&s->pb, 1, 0); /* only I/P frames, no PB frame */ - put_bits(&s->pb, 5, s->qscale); - put_bits(&s->pb, 1, 0); /* Continuous Presence Multipoint mode: off */ - } else { - int ufep=1; - /* H.263v2 */ - /* H.263 Plus PTYPE */ - - put_bits(&s->pb, 3, 7); - put_bits(&s->pb,3,ufep); /* Update Full Extended PTYPE */ - if (format == 8) - put_bits(&s->pb,3,6); /* Custom Source Format */ - else - put_bits(&s->pb, 3, format); - - put_bits(&s->pb,1, s->custom_pcf); - put_bits(&s->pb,1, s->umvplus); /* Unrestricted Motion Vector */ - put_bits(&s->pb,1,0); /* SAC: off */ - put_bits(&s->pb,1,s->obmc); /* Advanced Prediction Mode */ - put_bits(&s->pb,1,s->h263_aic); /* Advanced Intra Coding */ - put_bits(&s->pb,1,s->loop_filter); /* Deblocking Filter */ - put_bits(&s->pb,1,s->h263_slice_structured); /* Slice Structured */ - put_bits(&s->pb,1,0); /* Reference Picture Selection: off */ - put_bits(&s->pb,1,0); /* Independent Segment Decoding: off */ - put_bits(&s->pb,1,s->alt_inter_vlc); /* Alternative Inter VLC */ - put_bits(&s->pb,1,s->modified_quant); /* Modified Quantization: */ - put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */ - put_bits(&s->pb,3,0); /* Reserved */ - - put_bits(&s->pb, 3, s->pict_type == AV_PICTURE_TYPE_P); - - put_bits(&s->pb,1,0); /* Reference Picture Resampling: off */ - put_bits(&s->pb,1,0); /* Reduced-Resolution Update: off */ - put_bits(&s->pb,1,s->no_rounding); /* Rounding Type */ - put_bits(&s->pb,2,0); /* Reserved */ - put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */ - - /* This should be here if PLUSPTYPE */ - put_bits(&s->pb, 1, 0); /* Continuous Presence Multipoint mode: off */ - - if (format == 8) { - /* Custom Picture Format (CPFMT) */ - s->aspect_ratio_info= ff_h263_aspect_to_info(s->avctx->sample_aspect_ratio); - - put_bits(&s->pb,4,s->aspect_ratio_info); - put_bits(&s->pb,9,(s->width >> 2) - 1); - put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */ - put_bits(&s->pb,9,(s->height >> 2)); - if (s->aspect_ratio_info == FF_ASPECT_EXTENDED){ - put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.num); - put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.den); - } - } - if(s->custom_pcf){ - if(ufep){ - put_bits(&s->pb, 1, best_clock_code); - put_bits(&s->pb, 7, best_divisor); - } - put_sbits(&s->pb, 2, temp_ref>>8); - } - - /* Unlimited Unrestricted Motion Vectors Indicator (UUI) */ - if (s->umvplus) -// put_bits(&s->pb,1,1); /* Limited according tables of Annex D */ -//FIXME check actual requested range - put_bits(&s->pb,2,1); /* unlimited */ - if(s->h263_slice_structured) - put_bits(&s->pb,2,0); /* no weird submodes */ - - put_bits(&s->pb, 5, s->qscale); - } - - put_bits(&s->pb, 1, 0); /* no PEI */ - - if(s->h263_slice_structured){ - put_bits(&s->pb, 1, 1); - - av_assert1(s->mb_x == 0 && s->mb_y == 0); - ff_h263_encode_mba(s); - - put_bits(&s->pb, 1, 1); - } - - if(s->h263_aic){ - s->y_dc_scale_table= - s->c_dc_scale_table= ff_aic_dc_scale_table; - }else{ - s->y_dc_scale_table= - s->c_dc_scale_table= ff_mpeg1_dc_scale_table; - } -} - -/** - * Encode a group of blocks header. - */ -void ff_h263_encode_gob_header(MpegEncContext * s, int mb_line) -{ - put_bits(&s->pb, 17, 1); /* GBSC */ - - if(s->h263_slice_structured){ - put_bits(&s->pb, 1, 1); - - ff_h263_encode_mba(s); - - if(s->mb_num > 1583) - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, 5, s->qscale); /* GQUANT */ - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, 2, s->pict_type == AV_PICTURE_TYPE_I); /* GFID */ - }else{ - int gob_number= mb_line / s->gob_index; - - put_bits(&s->pb, 5, gob_number); /* GN */ - put_bits(&s->pb, 2, s->pict_type == AV_PICTURE_TYPE_I); /* GFID */ - put_bits(&s->pb, 5, s->qscale); /* GQUANT */ - } -} - -/** - * modify qscale so that encoding is actually possible in h263 (limit difference to -2..2) - */ -void ff_clean_h263_qscales(MpegEncContext *s){ - int i; - int8_t * const qscale_table = s->current_picture.qscale_table; - - ff_init_qscale_tab(s); - - for(i=1; imb_num; i++){ - if(qscale_table[ s->mb_index2xy[i] ] - qscale_table[ s->mb_index2xy[i-1] ] >2) - qscale_table[ s->mb_index2xy[i] ]= qscale_table[ s->mb_index2xy[i-1] ]+2; - } - for(i=s->mb_num-2; i>=0; i--){ - if(qscale_table[ s->mb_index2xy[i] ] - qscale_table[ s->mb_index2xy[i+1] ] >2) - qscale_table[ s->mb_index2xy[i] ]= qscale_table[ s->mb_index2xy[i+1] ]+2; - } - - if(s->codec_id != AV_CODEC_ID_H263P){ - for(i=1; imb_num; i++){ - int mb_xy= s->mb_index2xy[i]; - - if(qscale_table[mb_xy] != qscale_table[s->mb_index2xy[i-1]] && (s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_INTER4V)){ - s->mb_type[mb_xy]|= CANDIDATE_MB_TYPE_INTER; - } - } - } -} - -static const int dquant_code[5]= {1,0,9,2,3}; - -/** - * Encode an 8x8 block. - * @param block the 8x8 block - * @param n block index (0-3 are luma, 4-5 are chroma) - */ -static void h263_encode_block(MpegEncContext * s, int16_t * block, int n) -{ - int level, run, last, i, j, last_index, last_non_zero, sign, slevel, code; - RLTable *rl; - - rl = &ff_h263_rl_inter; - if (s->mb_intra && !s->h263_aic) { - /* DC coef */ - level = block[0]; - /* 255 cannot be represented, so we clamp */ - if (level > 254) { - level = 254; - block[0] = 254; - } - /* 0 cannot be represented also */ - else if (level < 1) { - level = 1; - block[0] = 1; - } - if (level == 128) //FIXME check rv10 - put_bits(&s->pb, 8, 0xff); - else - put_bits(&s->pb, 8, level); - i = 1; - } else { - i = 0; - if (s->h263_aic && s->mb_intra) - rl = &ff_rl_intra_aic; - - if(s->alt_inter_vlc && !s->mb_intra){ - int aic_vlc_bits=0; - int inter_vlc_bits=0; - int wrong_pos=-1; - int aic_code; - - last_index = s->block_last_index[n]; - last_non_zero = i - 1; - for (; i <= last_index; i++) { - j = s->intra_scantable.permutated[i]; - level = block[j]; - if (level) { - run = i - last_non_zero - 1; - last = (i == last_index); - - if(level<0) level= -level; - - code = get_rl_index(rl, last, run, level); - aic_code = get_rl_index(&ff_rl_intra_aic, last, run, level); - inter_vlc_bits += rl->table_vlc[code][1]+1; - aic_vlc_bits += ff_rl_intra_aic.table_vlc[aic_code][1]+1; - - if (code == rl->n) { - inter_vlc_bits += 1+6+8-1; - } - if (aic_code == ff_rl_intra_aic.n) { - aic_vlc_bits += 1+6+8-1; - wrong_pos += run + 1; - }else - wrong_pos += wrong_run[aic_code]; - last_non_zero = i; - } - } - i = 0; - if(aic_vlc_bits < inter_vlc_bits && wrong_pos > 63) - rl = &ff_rl_intra_aic; - } - } - - /* AC coefs */ - last_index = s->block_last_index[n]; - last_non_zero = i - 1; - for (; i <= last_index; i++) { - j = s->intra_scantable.permutated[i]; - level = block[j]; - if (level) { - run = i - last_non_zero - 1; - last = (i == last_index); - sign = 0; - slevel = level; - if (level < 0) { - sign = 1; - level = -level; - } - code = get_rl_index(rl, last, run, level); - put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); - if (code == rl->n) { - if(!CONFIG_FLV_ENCODER || s->h263_flv <= 1){ - put_bits(&s->pb, 1, last); - put_bits(&s->pb, 6, run); - - av_assert2(slevel != 0); - - if(level < 128) - put_sbits(&s->pb, 8, slevel); - else{ - put_bits(&s->pb, 8, 128); - put_sbits(&s->pb, 5, slevel); - put_sbits(&s->pb, 6, slevel>>5); - } - }else{ - ff_flv2_encode_ac_esc(&s->pb, slevel, level, run, last); - } - } else { - put_bits(&s->pb, 1, sign); - } - last_non_zero = i; - } - } -} - -/* Encode MV differences on H.263+ with Unrestricted MV mode */ -static void h263p_encode_umotion(MpegEncContext * s, int val) -{ - short sval = 0; - short i = 0; - short n_bits = 0; - short temp_val; - int code = 0; - int tcode; - - if ( val == 0) - put_bits(&s->pb, 1, 1); - else if (val == 1) - put_bits(&s->pb, 3, 0); - else if (val == -1) - put_bits(&s->pb, 3, 2); - else { - - sval = ((val < 0) ? (short)(-val):(short)val); - temp_val = sval; - - while (temp_val != 0) { - temp_val = temp_val >> 1; - n_bits++; - } - - i = n_bits - 1; - while (i > 0) { - tcode = (sval & (1 << (i-1))) >> (i-1); - tcode = (tcode << 1) | 1; - code = (code << 2) | tcode; - i--; - } - code = ((code << 1) | (val < 0)) << 1; - put_bits(&s->pb, (2*n_bits)+1, code); - } -} - -void ff_h263_encode_mb(MpegEncContext * s, - int16_t block[6][64], - int motion_x, int motion_y) -{ - int cbpc, cbpy, i, cbp, pred_x, pred_y; - int16_t pred_dc; - int16_t rec_intradc[6]; - int16_t *dc_ptr[6]; - const int interleaved_stats= (s->flags&CODEC_FLAG_PASS1); - - if (!s->mb_intra) { - /* compute cbp */ - cbp= get_p_cbp(s, block, motion_x, motion_y); - - if ((cbp | motion_x | motion_y | s->dquant | (s->mv_type - MV_TYPE_16X16)) == 0) { - /* skip macroblock */ - put_bits(&s->pb, 1, 1); - if(interleaved_stats){ - s->misc_bits++; - s->last_bits++; - } - s->skip_count++; - - return; - } - put_bits(&s->pb, 1, 0); /* mb coded */ - - cbpc = cbp & 3; - cbpy = cbp >> 2; - if(s->alt_inter_vlc==0 || cbpc!=3) - cbpy ^= 0xF; - if(s->dquant) cbpc+= 8; - if(s->mv_type==MV_TYPE_16X16){ - put_bits(&s->pb, - ff_h263_inter_MCBPC_bits[cbpc], - ff_h263_inter_MCBPC_code[cbpc]); - - put_bits(&s->pb, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]); - if(s->dquant) - put_bits(&s->pb, 2, dquant_code[s->dquant+2]); - - if(interleaved_stats){ - s->misc_bits+= get_bits_diff(s); - } - - /* motion vectors: 16x16 mode */ - ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y); - - if (!s->umvplus) { - ff_h263_encode_motion_vector(s, motion_x - pred_x, - motion_y - pred_y, 1); - } - else { - h263p_encode_umotion(s, motion_x - pred_x); - h263p_encode_umotion(s, motion_y - pred_y); - if (((motion_x - pred_x) == 1) && ((motion_y - pred_y) == 1)) - /* To prevent Start Code emulation */ - put_bits(&s->pb,1,1); - } - }else{ - put_bits(&s->pb, - ff_h263_inter_MCBPC_bits[cbpc+16], - ff_h263_inter_MCBPC_code[cbpc+16]); - put_bits(&s->pb, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]); - if(s->dquant) - put_bits(&s->pb, 2, dquant_code[s->dquant+2]); - - if(interleaved_stats){ - s->misc_bits+= get_bits_diff(s); - } - - for(i=0; i<4; i++){ - /* motion vectors: 8x8 mode*/ - ff_h263_pred_motion(s, i, 0, &pred_x, &pred_y); - - motion_x = s->current_picture.motion_val[0][s->block_index[i]][0]; - motion_y = s->current_picture.motion_val[0][s->block_index[i]][1]; - if (!s->umvplus) { - ff_h263_encode_motion_vector(s, motion_x - pred_x, - motion_y - pred_y, 1); - } - else { - h263p_encode_umotion(s, motion_x - pred_x); - h263p_encode_umotion(s, motion_y - pred_y); - if (((motion_x - pred_x) == 1) && ((motion_y - pred_y) == 1)) - /* To prevent Start Code emulation */ - put_bits(&s->pb,1,1); - } - } - } - - if(interleaved_stats){ - s->mv_bits+= get_bits_diff(s); - } - } else { - av_assert2(s->mb_intra); - - cbp = 0; - if (s->h263_aic) { - /* Predict DC */ - for(i=0; i<6; i++) { - int16_t level = block[i][0]; - int scale; - - if(i<4) scale= s->y_dc_scale; - else scale= s->c_dc_scale; - - pred_dc = ff_h263_pred_dc(s, i, &dc_ptr[i]); - level -= pred_dc; - /* Quant */ - if (level >= 0) - level = (level + (scale>>1))/scale; - else - level = (level - (scale>>1))/scale; - - /* AIC can change CBP */ - if (level == 0 && s->block_last_index[i] == 0) - s->block_last_index[i] = -1; - - if(!s->modified_quant){ - if (level < -127) - level = -127; - else if (level > 127) - level = 127; - } - - block[i][0] = level; - /* Reconstruction */ - rec_intradc[i] = scale*level + pred_dc; - /* Oddify */ - rec_intradc[i] |= 1; - //if ((rec_intradc[i] % 2) == 0) - // rec_intradc[i]++; - /* Clipping */ - if (rec_intradc[i] < 0) - rec_intradc[i] = 0; - else if (rec_intradc[i] > 2047) - rec_intradc[i] = 2047; - - /* Update AC/DC tables */ - *dc_ptr[i] = rec_intradc[i]; - if (s->block_last_index[i] >= 0) - cbp |= 1 << (5 - i); - } - }else{ - for(i=0; i<6; i++) { - /* compute cbp */ - if (s->block_last_index[i] >= 1) - cbp |= 1 << (5 - i); - } - } - - cbpc = cbp & 3; - if (s->pict_type == AV_PICTURE_TYPE_I) { - if(s->dquant) cbpc+=4; - put_bits(&s->pb, - ff_h263_intra_MCBPC_bits[cbpc], - ff_h263_intra_MCBPC_code[cbpc]); - } else { - if(s->dquant) cbpc+=8; - put_bits(&s->pb, 1, 0); /* mb coded */ - put_bits(&s->pb, - ff_h263_inter_MCBPC_bits[cbpc + 4], - ff_h263_inter_MCBPC_code[cbpc + 4]); - } - if (s->h263_aic) { - /* XXX: currently, we do not try to use ac prediction */ - put_bits(&s->pb, 1, 0); /* no AC prediction */ - } - cbpy = cbp >> 2; - put_bits(&s->pb, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]); - if(s->dquant) - put_bits(&s->pb, 2, dquant_code[s->dquant+2]); - - if(interleaved_stats){ - s->misc_bits+= get_bits_diff(s); - } - } - - for(i=0; i<6; i++) { - /* encode each block */ - h263_encode_block(s, block[i], i); - - /* Update INTRADC for decoding */ - if (s->h263_aic && s->mb_intra) { - block[i][0] = rec_intradc[i]; - - } - } - - if(interleaved_stats){ - if (!s->mb_intra) { - s->p_tex_bits+= get_bits_diff(s); - s->f_count++; - }else{ - s->i_tex_bits+= get_bits_diff(s); - s->i_count++; - } - } -} - -void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code) -{ - int range, bit_size, sign, code, bits; - - if (val == 0) { - /* zero vector */ - code = 0; - put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]); - } else { - bit_size = f_code - 1; - range = 1 << bit_size; - /* modulo encoding */ - val = sign_extend(val, 6 + bit_size); - sign = val>>31; - val= (val^sign)-sign; - sign&=1; - - val--; - code = (val >> bit_size) + 1; - bits = val & (range - 1); - - put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign); - if (bit_size > 0) { - put_bits(&s->pb, bit_size, bits); - } - } -} - -static av_cold void init_mv_penalty_and_fcode(MpegEncContext *s) -{ - int f_code; - int mv; - - for(f_code=1; f_code<=MAX_FCODE; f_code++){ - for(mv=-MAX_MV; mv<=MAX_MV; mv++){ - int len; - - if(mv==0) len= ff_mvtab[0][1]; - else{ - int val, bit_size, code; - - bit_size = f_code - 1; - - val=mv; - if (val < 0) - val = -val; - val--; - code = (val >> bit_size) + 1; - if(code<33){ - len= ff_mvtab[code][1] + 1 + bit_size; - }else{ - len= ff_mvtab[32][1] + av_log2(code>>5) + 2 + bit_size; - } - } - - mv_penalty[f_code][mv+MAX_MV]= len; - } - } - - for(f_code=MAX_FCODE; f_code>0; f_code--){ - for(mv=-(16<= 64); - av_assert0(MAX_RUN >= 63); - - for(slevel=-64; slevel<64; slevel++){ - if(slevel==0) continue; - for(run=0; run<64; run++){ - for(last=0; last<=1; last++){ - const int index= UNI_MPEG4_ENC_INDEX(last, run, slevel+64); - int level= slevel < 0 ? -slevel : slevel; - int sign= slevel < 0 ? 1 : 0; - int bits, len, code; - - len_tab[index]= 100; - - /* ESC0 */ - code= get_rl_index(rl, last, run, level); - bits= rl->table_vlc[code][0]; - len= rl->table_vlc[code][1]; - bits=bits*2+sign; len++; - - if(code!=rl->n && len < len_tab[index]){ - if(bits_tab) bits_tab[index]= bits; - len_tab [index]= len; - } - /* ESC */ - bits= rl->table_vlc[rl->n][0]; - len = rl->table_vlc[rl->n][1]; - bits=bits*2+last; len++; - bits=bits*64+run; len+=6; - bits=bits*256+(level&0xff); len+=8; - - if(len < len_tab[index]){ - if(bits_tab) bits_tab[index]= bits; - len_tab [index]= len; - } - } - } - } -} - -av_cold void ff_h263_encode_init(MpegEncContext *s) -{ - static int done = 0; - - if (!done) { - done = 1; - - ff_init_rl(&ff_h263_rl_inter, ff_h263_static_rl_table_store[0]); - ff_init_rl(&ff_rl_intra_aic, ff_h263_static_rl_table_store[1]); - - init_uni_h263_rl_tab(&ff_rl_intra_aic, NULL, uni_h263_intra_aic_rl_len); - init_uni_h263_rl_tab(&ff_h263_rl_inter , NULL, uni_h263_inter_rl_len); - - init_mv_penalty_and_fcode(s); - } - s->me.mv_penalty= mv_penalty; //FIXME exact table for msmpeg4 & h263p - - s->intra_ac_vlc_length =s->inter_ac_vlc_length = uni_h263_inter_rl_len; - s->intra_ac_vlc_last_length=s->inter_ac_vlc_last_length= uni_h263_inter_rl_len + 128*64; - if(s->h263_aic){ - s->intra_ac_vlc_length = uni_h263_intra_aic_rl_len; - s->intra_ac_vlc_last_length= uni_h263_intra_aic_rl_len + 128*64; - } - s->ac_esc_length= 7+1+6+8; - - // use fcodes >1 only for mpeg4 & h263 & h263p FIXME - switch(s->codec_id){ - case AV_CODEC_ID_MPEG4: - s->fcode_tab= fcode_tab; - break; - case AV_CODEC_ID_H263P: - if(s->umvplus) - s->fcode_tab= umv_fcode_tab; - if(s->modified_quant){ - s->min_qcoeff= -2047; - s->max_qcoeff= 2047; - }else{ - s->min_qcoeff= -127; - s->max_qcoeff= 127; - } - break; - //Note for mpeg4 & h263 the dc-scale table will be set per frame as needed later - case AV_CODEC_ID_FLV1: - if (s->h263_flv > 1) { - s->min_qcoeff= -1023; - s->max_qcoeff= 1023; - } else { - s->min_qcoeff= -127; - s->max_qcoeff= 127; - } - s->y_dc_scale_table= - s->c_dc_scale_table= ff_mpeg1_dc_scale_table; - break; - default: //nothing needed - default table already set in mpegvideo.c - s->min_qcoeff= -127; - s->max_qcoeff= 127; - s->y_dc_scale_table= - s->c_dc_scale_table= ff_mpeg1_dc_scale_table; - } -} - -void ff_h263_encode_mba(MpegEncContext *s) -{ - int i, mb_pos; - - for(i=0; i<6; i++){ - if(s->mb_num-1 <= ff_mba_max[i]) break; - } - mb_pos= s->mb_x + s->mb_width*s->mb_y; - put_bits(&s->pb, ff_mba_length[i], mb_pos); -} -- cgit v1.2.3