mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 21079 to svn://svn.ffmpeg.org/ffmpeg/trunkrelease/0.6
Michael Niedermayer
15 years ago
parent
84f0aba18d
commit
ca334dd14b
14 changed files with 4332 additions and 4103 deletions
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/*
|
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* H263 internal header |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_H263_H |
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#define AVCODEC_H263_H |
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// The defines below define the number of bits that are read at once for
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// reading vlc values. Changing these may improve speed and data cache needs
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// be aware though that decreasing them may need the number of stages that is
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// passed to get_vlc* to be increased.
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#define INTRA_MCBPC_VLC_BITS 6 |
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#define INTER_MCBPC_VLC_BITS 7 |
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#define CBPY_VLC_BITS 6 |
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#define TEX_VLC_BITS 9 |
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extern const AVRational ff_h263_pixel_aspect[16]; |
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extern const uint8_t cbpy_tab[16][2]; |
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extern const uint8_t mvtab[33][2]; |
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extern const uint8_t intra_MCBPC_code[9]; |
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extern const uint8_t intra_MCBPC_bits[9]; |
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extern const uint8_t inter_MCBPC_code[28]; |
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extern const uint8_t inter_MCBPC_bits[28]; |
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extern VLC intra_MCBPC_vlc; |
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extern VLC inter_MCBPC_vlc; |
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extern VLC cbpy_vlc; |
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extern RLTable rl_inter; |
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int h263_decode_motion(MpegEncContext * s, int pred, int f_code); |
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av_const int ff_h263_aspect_to_info(AVRational aspect); |
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static inline int h263_get_motion_length(MpegEncContext * s, int val, int f_code){ |
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int l, bit_size, code; |
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if (val == 0) { |
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return mvtab[0][1]; |
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} else { |
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bit_size = f_code - 1; |
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/* modulo encoding */ |
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l= INT_BIT - 6 - bit_size; |
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val = (val<<l)>>l; |
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val--; |
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code = (val >> bit_size) + 1; |
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return mvtab[code][1] + 1 + bit_size; |
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} |
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} |
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static inline void ff_h263_encode_motion_vector(MpegEncContext * s, int x, int y, int f_code){ |
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if(s->flags2 & CODEC_FLAG2_NO_OUTPUT){ |
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skip_put_bits(&s->pb, |
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h263_get_motion_length(s, x, f_code) |
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+h263_get_motion_length(s, y, f_code)); |
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}else{ |
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ff_h263_encode_motion(s, x, f_code); |
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ff_h263_encode_motion(s, y, f_code); |
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} |
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} |
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static inline int get_p_cbp(MpegEncContext * s, |
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DCTELEM block[6][64], |
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int motion_x, int motion_y){ |
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int cbp, i; |
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if(s->flags & CODEC_FLAG_CBP_RD){ |
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int best_cbpy_score= INT_MAX; |
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int best_cbpc_score= INT_MAX; |
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int cbpc = (-1), cbpy= (-1); |
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const int offset= (s->mv_type==MV_TYPE_16X16 ? 0 : 16) + (s->dquant ? 8 : 0); |
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const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6); |
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for(i=0; i<4; i++){ |
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int score= inter_MCBPC_bits[i + offset] * lambda; |
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if(i&1) score += s->coded_score[5]; |
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if(i&2) score += s->coded_score[4]; |
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if(score < best_cbpc_score){ |
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best_cbpc_score= score; |
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cbpc= i; |
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} |
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} |
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for(i=0; i<16; i++){ |
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int score= cbpy_tab[i ^ 0xF][1] * lambda; |
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if(i&1) score += s->coded_score[3]; |
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if(i&2) score += s->coded_score[2]; |
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if(i&4) score += s->coded_score[1]; |
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if(i&8) score += s->coded_score[0]; |
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if(score < best_cbpy_score){ |
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best_cbpy_score= score; |
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cbpy= i; |
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} |
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} |
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cbp= cbpc + 4*cbpy; |
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if ((motion_x | motion_y | s->dquant) == 0 && s->mv_type==MV_TYPE_16X16){ |
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if(best_cbpy_score + best_cbpc_score + 2*lambda >= 0) |
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cbp= 0; |
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} |
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for (i = 0; i < 6; i++) { |
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if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i))&1)==0 ){ |
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s->block_last_index[i]= -1; |
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s->dsp.clear_block(s->block[i]); |
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} |
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} |
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}else{ |
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cbp= 0; |
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for (i = 0; i < 6; i++) { |
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if (s->block_last_index[i] >= 0) |
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cbp |= 1 << (5 - i); |
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} |
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} |
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return cbp; |
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} |
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static inline int get_b_cbp(MpegEncContext * s, DCTELEM block[6][64], |
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int motion_x, int motion_y, int mb_type){ |
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int cbp=0, i; |
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if(s->flags & CODEC_FLAG_CBP_RD){ |
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int score=0; |
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const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6); |
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for(i=0; i<6; i++){ |
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if(s->coded_score[i] < 0){ |
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score += s->coded_score[i]; |
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cbp |= 1 << (5 - i); |
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} |
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} |
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if(cbp){ |
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int zero_score= -6; |
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if ((motion_x | motion_y | s->dquant | mb_type) == 0){ |
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zero_score-= 4; //2*MV + mb_type + cbp bit
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} |
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zero_score*= lambda; |
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if(zero_score <= score){ |
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cbp=0; |
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} |
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} |
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for (i = 0; i < 6; i++) { |
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if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i))&1)==0 ){ |
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s->block_last_index[i]= -1; |
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s->dsp.clear_block(s->block[i]); |
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} |
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} |
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}else{ |
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for (i = 0; i < 6; i++) { |
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if (s->block_last_index[i] >= 0) |
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cbp |= 1 << (5 - i); |
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} |
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} |
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return cbp; |
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} |
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#endif |
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@ -0,0 +1,72 @@ |
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/*
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* MPEG4 decoder / encoder common code. |
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* Copyright (c) 2000,2001 Fabrice Bellard |
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* Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "mpegvideo.h" |
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#include "mpeg4video.h" |
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#include "mpeg4data.h" |
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uint8_t ff_mpeg4_static_rl_table_store[3][2][2*MAX_RUN + MAX_LEVEL + 3]; |
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int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s){ |
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switch(s->pict_type){ |
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case FF_I_TYPE: |
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return 16; |
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case FF_P_TYPE: |
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case FF_S_TYPE: |
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return s->f_code+15; |
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case FF_B_TYPE: |
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return FFMAX3(s->f_code, s->b_code, 2) + 15; |
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default: |
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return -1; |
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} |
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} |
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void ff_mpeg4_clean_buffers(MpegEncContext *s) |
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{ |
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int c_wrap, c_xy, l_wrap, l_xy; |
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l_wrap= s->b8_stride; |
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l_xy= (2*s->mb_y-1)*l_wrap + s->mb_x*2 - 1; |
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c_wrap= s->mb_stride; |
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c_xy= (s->mb_y-1)*c_wrap + s->mb_x - 1; |
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#if 0 |
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/* clean DC */ |
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memsetw(s->dc_val[0] + l_xy, 1024, l_wrap*2+1); |
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memsetw(s->dc_val[1] + c_xy, 1024, c_wrap+1); |
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memsetw(s->dc_val[2] + c_xy, 1024, c_wrap+1); |
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#endif |
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/* clean AC */ |
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memset(s->ac_val[0] + l_xy, 0, (l_wrap*2+1)*16*sizeof(int16_t)); |
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memset(s->ac_val[1] + c_xy, 0, (c_wrap +1)*16*sizeof(int16_t)); |
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memset(s->ac_val[2] + c_xy, 0, (c_wrap +1)*16*sizeof(int16_t)); |
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/* clean MV */ |
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// we can't clear the MVs as they might be needed by a b frame
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// memset(s->motion_val + l_xy, 0, (l_wrap*2+1)*2*sizeof(int16_t));
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// memset(s->motion_val, 0, 2*sizeof(int16_t)*(2 + s->mb_width*2)*(2 + s->mb_height*2));
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s->last_mv[0][0][0]= |
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s->last_mv[0][0][1]= |
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s->last_mv[1][0][0]= |
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s->last_mv[1][0][1]= 0; |
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} |
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@ -0,0 +1,197 @@ |
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/*
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* MPEG4 encoder/decoder internal header. |
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* Copyright (c) 2000,2001 Fabrice Bellard |
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* Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_MPEG4VIDEO_H |
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#define AVCODEC_MPEG4VIDEO_H |
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// shapes
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#define RECT_SHAPE 0 |
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#define BIN_SHAPE 1 |
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#define BIN_ONLY_SHAPE 2 |
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#define GRAY_SHAPE 3 |
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#define SIMPLE_VO_TYPE 1 |
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#define CORE_VO_TYPE 3 |
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#define MAIN_VO_TYPE 4 |
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#define NBIT_VO_TYPE 5 |
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#define ARTS_VO_TYPE 10 |
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#define ACE_VO_TYPE 12 |
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#define ADV_SIMPLE_VO_TYPE 17 |
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// aspect_ratio_info
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#define EXTENDED_PAR 15 |
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//vol_sprite_usage / sprite_enable
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#define STATIC_SPRITE 1 |
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#define GMC_SPRITE 2 |
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#define MOTION_MARKER 0x1F001 |
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#define DC_MARKER 0x6B001 |
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#define VOS_STARTCODE 0x1B0 |
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#define USER_DATA_STARTCODE 0x1B2 |
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#define GOP_STARTCODE 0x1B3 |
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#define VISUAL_OBJ_STARTCODE 0x1B5 |
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#define VOP_STARTCODE 0x1B6 |
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/* dc encoding for mpeg4 */ |
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extern const uint8_t DCtab_lum[13][2]; |
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extern const uint8_t DCtab_chrom[13][2]; |
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extern const uint16_t intra_vlc[103][2]; |
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extern const int8_t intra_level[102]; |
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extern const int8_t intra_run[102]; |
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extern RLTable rl_intra; |
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/* Note this is identical to the intra rvlc except that it is reordered. */ |
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extern const uint16_t inter_rvlc[170][2]; |
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extern const int8_t inter_rvlc_run[169]; |
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extern const int8_t inter_rvlc_level[169]; |
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extern RLTable rvlc_rl_inter; |
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extern const uint16_t intra_rvlc[170][2]; |
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extern const int8_t intra_rvlc_run[169]; |
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extern const int8_t intra_rvlc_level[169]; |
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extern RLTable rvlc_rl_intra; |
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extern const uint16_t sprite_trajectory_tab[15][2]; |
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extern const uint8_t mb_type_b_tab[4][2]; |
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extern const AVRational pixel_aspect[16]; |
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/* these matrixes will be permuted for the idct */ |
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extern const int16_t ff_mpeg4_default_intra_matrix[64]; |
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extern const int16_t ff_mpeg4_default_non_intra_matrix[64]; |
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extern const uint8_t ff_mpeg4_y_dc_scale_table[32]; |
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extern const uint8_t ff_mpeg4_c_dc_scale_table[32]; |
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extern const uint16_t ff_mpeg4_resync_prefix[8]; |
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extern const uint8_t mpeg4_dc_threshold[8]; |
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void mpeg4_encode_mb(MpegEncContext *s, |
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DCTELEM block[6][64], |
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int motion_x, int motion_y); |
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void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n, |
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int dir); |
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void ff_set_mpeg4_time(MpegEncContext * s); |
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void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number); |
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int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb); |
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void ff_mpeg4_encode_video_packet_header(MpegEncContext *s); |
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void ff_mpeg4_clean_buffers(MpegEncContext *s); |
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void ff_mpeg4_stuffing(PutBitContext * pbc); |
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void ff_mpeg4_init_partitions(MpegEncContext *s); |
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void ff_mpeg4_merge_partitions(MpegEncContext *s); |
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void ff_clean_mpeg4_qscales(MpegEncContext *s); |
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int ff_mpeg4_decode_partitions(MpegEncContext *s); |
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int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s); |
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int mpeg4_decode_video_packet_header(MpegEncContext *s); |
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extern uint8_t ff_mpeg4_static_rl_table_store[3][2][2*MAX_RUN + MAX_LEVEL + 3]; |
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#if 0 //3IV1 is quite rare and it slows things down a tiny bit
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#define IS_3IV1 s->codec_tag == AV_RL32("3IV1") |
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#else |
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#define IS_3IV1 0 |
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#endif |
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/**
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* predicts the dc. |
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* encoding quantized level -> quantized diff |
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* decoding quantized diff -> quantized level |
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* @param n block index (0-3 are luma, 4-5 are chroma) |
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* @param dir_ptr pointer to an integer where the prediction direction will be stored |
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*/ |
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static inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, int level, int *dir_ptr, int encoding) |
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{ |
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int a, b, c, wrap, pred, scale, ret; |
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int16_t *dc_val; |
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/* find prediction */ |
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if (n < 4) { |
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scale = s->y_dc_scale; |
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} else { |
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scale = s->c_dc_scale; |
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} |
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if(IS_3IV1) |
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scale= 8; |
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wrap= s->block_wrap[n]; |
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dc_val = s->dc_val[0] + s->block_index[n]; |
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/* B C
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* A X |
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*/ |
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a = dc_val[ - 1]; |
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b = dc_val[ - 1 - wrap]; |
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c = dc_val[ - wrap]; |
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/* outside slice handling (we can't do that by memset as we need the dc for error resilience) */ |
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if(s->first_slice_line && n!=3){ |
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if(n!=2) b=c= 1024; |
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if(n!=1 && s->mb_x == s->resync_mb_x) b=a= 1024; |
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} |
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if(s->mb_x == s->resync_mb_x && s->mb_y == s->resync_mb_y+1){ |
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if(n==0 || n==4 || n==5) |
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b=1024; |
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} |
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if (abs(a - b) < abs(b - c)) { |
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pred = c; |
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*dir_ptr = 1; /* top */ |
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} else { |
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pred = a; |
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*dir_ptr = 0; /* left */ |
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} |
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/* we assume pred is positive */ |
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pred = FASTDIV((pred + (scale >> 1)), scale); |
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if(encoding){ |
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ret = level - pred; |
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}else{ |
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level += pred; |
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ret= level; |
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if(s->error_recognition>=3){ |
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if(level<0){ |
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av_log(s->avctx, AV_LOG_ERROR, "dc<0 at %dx%d\n", s->mb_x, s->mb_y); |
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return -1; |
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} |
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if(level*scale > 2048 + scale){ |
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av_log(s->avctx, AV_LOG_ERROR, "dc overflow at %dx%d\n", s->mb_x, s->mb_y); |
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return -1; |
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} |
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} |
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} |
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level *=scale; |
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if(level&(~2047)){ |
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if(level<0) |
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level=0; |
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else if(!(s->workaround_bugs&FF_BUG_DC_CLIP)) |
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level=2047; |
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} |
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dc_val[0]= level; |
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return ret; |
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} |
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#endif |
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