diff options
author | Diego Biurrun <diego@biurrun.de> | 2009-12-30 19:10:52 +0300 |
---|---|---|
committer | Diego Biurrun <diego@biurrun.de> | 2009-12-30 19:10:52 +0300 |
commit | 20390e31702b421bc2aa73bc03eeb49569a0dc25 (patch) | |
tree | f20a01d57e0cc0d45a703c6f032aeb65da14bde9 /libavcodec/h263.c | |
parent | df8d98c4dd0853d92a16b1715d4e8abf19feabd8 (diff) |
cosmetics: Move MPEG-4 encoding functions around to avoid forward declarations.
Originally committed as revision 20981 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/h263.c')
-rw-r--r-- | libavcodec/h263.c | 971 |
1 files changed, 478 insertions, 493 deletions
diff --git a/libavcodec/h263.c b/libavcodec/h263.c index 69e8fc5b9c..ad6624ad69 100644 --- a/libavcodec/h263.c +++ b/libavcodec/h263.c @@ -57,16 +57,6 @@ #define CBPC_B_VLC_BITS 3 #if CONFIG_ENCODERS -static void mpeg4_encode_visual_object_header(MpegEncContext *s); -static void mpeg4_encode_vol_header(MpegEncContext *s, int vo_number, - int vol_number); -static inline void mpeg4_encode_block(MpegEncContext *s, DCTELEM *block, - int n, int dc, uint8_t *scan_table, - PutBitContext *dc_pb, - PutBitContext *ac_pb); -static int mpeg4_get_block_length(MpegEncContext *s, DCTELEM *block, int n, - int intra_dc, uint8_t *scan_table); - static uint8_t uni_DCtab_lum_len[512]; static uint8_t uni_DCtab_chrom_len[512]; static uint16_t uni_DCtab_lum_bits[512]; @@ -788,6 +778,229 @@ static inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, int level, int *di #if CONFIG_ENCODERS +/** + * encodes the dc value. + * @param n block index (0-3 are luma, 4-5 are chroma) + */ +static inline void mpeg4_encode_dc(PutBitContext * s, int level, int n) +{ +#if 1 + level+=256; + if (n < 4) { + /* luminance */ + put_bits(s, uni_DCtab_lum_len[level], uni_DCtab_lum_bits[level]); + } else { + /* chrominance */ + put_bits(s, uni_DCtab_chrom_len[level], uni_DCtab_chrom_bits[level]); + } +#else + int size, v; + /* find number of bits */ + size = 0; + v = abs(level); + while (v) { + v >>= 1; + size++; + } + + if (n < 4) { + /* luminance */ + put_bits(&s->pb, DCtab_lum[size][1], DCtab_lum[size][0]); + } else { + /* chrominance */ + put_bits(&s->pb, DCtab_chrom[size][1], DCtab_chrom[size][0]); + } + + /* encode remaining bits */ + if (size > 0) { + if (level < 0) + level = (-level) ^ ((1 << size) - 1); + put_bits(&s->pb, size, level); + if (size > 8) + put_bits(&s->pb, 1, 1); + } +#endif +} + +static inline int mpeg4_get_dc_length(int level, int n){ + if (n < 4) { + return uni_DCtab_lum_len[level + 256]; + } else { + return uni_DCtab_chrom_len[level + 256]; + } +} + +/** + * encodes a 8x8 block + * @param n block index (0-3 are luma, 4-5 are chroma) + */ +static inline void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n, int intra_dc, + uint8_t *scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb) +{ + int i, last_non_zero; +#if 0 //variables for the outcommented version + int code, sign, last; +#endif + const RLTable *rl; + uint32_t *bits_tab; + uint8_t *len_tab; + const int last_index = s->block_last_index[n]; + + if (s->mb_intra) { //Note gcc (3.2.1 at least) will optimize this away + /* mpeg4 based DC predictor */ + mpeg4_encode_dc(dc_pb, intra_dc, n); + if(last_index<1) return; + i = 1; + rl = &rl_intra; + bits_tab= uni_mpeg4_intra_rl_bits; + len_tab = uni_mpeg4_intra_rl_len; + } else { + if(last_index<0) return; + i = 0; + rl = &rl_inter; + bits_tab= uni_mpeg4_inter_rl_bits; + len_tab = uni_mpeg4_inter_rl_len; + } + + /* AC coefs */ + last_non_zero = i - 1; +#if 1 + for (; i < last_index; i++) { + int level = block[ scan_table[i] ]; + if (level) { + int run = i - last_non_zero - 1; + level+=64; + if((level&(~127)) == 0){ + const int index= UNI_MPEG4_ENC_INDEX(0, run, level); + put_bits(ac_pb, len_tab[index], bits_tab[index]); + }else{ //ESC3 + put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(0<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1); + } + last_non_zero = i; + } + } + /*if(i<=last_index)*/{ + int level = block[ scan_table[i] ]; + int run = i - last_non_zero - 1; + level+=64; + if((level&(~127)) == 0){ + const int index= UNI_MPEG4_ENC_INDEX(1, run, level); + put_bits(ac_pb, len_tab[index], bits_tab[index]); + }else{ //ESC3 + put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(1<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1); + } + } +#else + for (; i <= last_index; i++) { + const int slevel = block[ scan_table[i] ]; + if (slevel) { + int level; + int run = i - last_non_zero - 1; + last = (i == last_index); + sign = 0; + level = slevel; + if (level < 0) { + sign = 1; + level = -level; + } + code = get_rl_index(rl, last, run, level); + put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); + if (code == rl->n) { + int level1, run1; + level1 = level - rl->max_level[last][run]; + if (level1 < 1) + goto esc2; + code = get_rl_index(rl, last, run, level1); + if (code == rl->n) { + esc2: + put_bits(ac_pb, 1, 1); + if (level > MAX_LEVEL) + goto esc3; + run1 = run - rl->max_run[last][level] - 1; + if (run1 < 0) + goto esc3; + code = get_rl_index(rl, last, run1, level); + if (code == rl->n) { + esc3: + /* third escape */ + put_bits(ac_pb, 1, 1); + put_bits(ac_pb, 1, last); + put_bits(ac_pb, 6, run); + put_bits(ac_pb, 1, 1); + put_sbits(ac_pb, 12, slevel); + put_bits(ac_pb, 1, 1); + } else { + /* second escape */ + put_bits(ac_pb, 1, 0); + put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); + put_bits(ac_pb, 1, sign); + } + } else { + /* first escape */ + put_bits(ac_pb, 1, 0); + put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); + put_bits(ac_pb, 1, sign); + } + } else { + put_bits(ac_pb, 1, sign); + } + last_non_zero = i; + } + } +#endif +} + +static int mpeg4_get_block_length(MpegEncContext * s, DCTELEM * block, int n, int intra_dc, + uint8_t *scan_table) +{ + int i, last_non_zero; + uint8_t *len_tab; + const int last_index = s->block_last_index[n]; + int len=0; + + if (s->mb_intra) { //Note gcc (3.2.1 at least) will optimize this away + /* mpeg4 based DC predictor */ + len += mpeg4_get_dc_length(intra_dc, n); + if(last_index<1) return len; + i = 1; + len_tab = uni_mpeg4_intra_rl_len; + } else { + if(last_index<0) return 0; + i = 0; + len_tab = uni_mpeg4_inter_rl_len; + } + + /* AC coefs */ + last_non_zero = i - 1; + for (; i < last_index; i++) { + int level = block[ scan_table[i] ]; + if (level) { + int run = i - last_non_zero - 1; + level+=64; + if((level&(~127)) == 0){ + const int index= UNI_MPEG4_ENC_INDEX(0, run, level); + len += len_tab[index]; + }else{ //ESC3 + len += 7+2+1+6+1+12+1; + } + last_non_zero = i; + } + } + /*if(i<=last_index)*/{ + int level = block[ scan_table[i] ]; + int run = i - last_non_zero - 1; + level+=64; + if((level&(~127)) == 0){ + const int index= UNI_MPEG4_ENC_INDEX(1, run, level); + len += len_tab[index]; + }else{ //ESC3 + len += 7+2+1+6+1+12+1; + } + } + + return len; +} + static inline int h263_get_motion_length(MpegEncContext * s, int val, int f_code){ int l, bit_size, code; @@ -1950,6 +2163,261 @@ int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir, } #if CONFIG_ENCODERS + +/***************************************************/ +/** + * add mpeg4 stuffing bits (01...1) + */ +void ff_mpeg4_stuffing(PutBitContext * pbc) +{ + int length; + put_bits(pbc, 1, 0); + length= (-put_bits_count(pbc))&7; + if(length) put_bits(pbc, length, (1<<length)-1); +} + +/* must be called before writing the header */ +void ff_set_mpeg4_time(MpegEncContext * s){ + if(s->pict_type==FF_B_TYPE){ + ff_mpeg4_init_direct_mv(s); + }else{ + s->last_time_base= s->time_base; + s->time_base= s->time/s->avctx->time_base.den; + } +} + +static void mpeg4_encode_gop_header(MpegEncContext * s){ + int hours, minutes, seconds; + int64_t time; + + put_bits(&s->pb, 16, 0); + put_bits(&s->pb, 16, GOP_STARTCODE); + + time= s->current_picture_ptr->pts; + if(s->reordered_input_picture[1]) + time= FFMIN(time, s->reordered_input_picture[1]->pts); + time= time*s->avctx->time_base.num; + + seconds= time/s->avctx->time_base.den; + minutes= seconds/60; seconds %= 60; + hours= minutes/60; minutes %= 60; + hours%=24; + + put_bits(&s->pb, 5, hours); + put_bits(&s->pb, 6, minutes); + put_bits(&s->pb, 1, 1); + put_bits(&s->pb, 6, seconds); + + put_bits(&s->pb, 1, !!(s->flags&CODEC_FLAG_CLOSED_GOP)); + put_bits(&s->pb, 1, 0); //broken link == NO + + s->last_time_base= time / s->avctx->time_base.den; + + ff_mpeg4_stuffing(&s->pb); +} + +static void mpeg4_encode_visual_object_header(MpegEncContext * s){ + int profile_and_level_indication; + int vo_ver_id; + + if(s->avctx->profile != FF_PROFILE_UNKNOWN){ + profile_and_level_indication = s->avctx->profile << 4; + }else if(s->max_b_frames || s->quarter_sample){ + profile_and_level_indication= 0xF0; // adv simple + }else{ + profile_and_level_indication= 0x00; // simple + } + + if(s->avctx->level != FF_LEVEL_UNKNOWN){ + profile_and_level_indication |= s->avctx->level; + }else{ + profile_and_level_indication |= 1; //level 1 + } + + if(profile_and_level_indication>>4 == 0xF){ + vo_ver_id= 5; + }else{ + vo_ver_id= 1; + } + + //FIXME levels + + put_bits(&s->pb, 16, 0); + put_bits(&s->pb, 16, VOS_STARTCODE); + + put_bits(&s->pb, 8, profile_and_level_indication); + + put_bits(&s->pb, 16, 0); + put_bits(&s->pb, 16, VISUAL_OBJ_STARTCODE); + + put_bits(&s->pb, 1, 1); + put_bits(&s->pb, 4, vo_ver_id); + put_bits(&s->pb, 3, 1); //priority + + put_bits(&s->pb, 4, 1); //visual obj type== video obj + + put_bits(&s->pb, 1, 0); //video signal type == no clue //FIXME + + ff_mpeg4_stuffing(&s->pb); +} + +static void mpeg4_encode_vol_header(MpegEncContext * s, int vo_number, int vol_number) +{ + int vo_ver_id; + + if (!CONFIG_MPEG4_ENCODER) return; + + if(s->max_b_frames || s->quarter_sample){ + vo_ver_id= 5; + s->vo_type= ADV_SIMPLE_VO_TYPE; + }else{ + vo_ver_id= 1; + s->vo_type= SIMPLE_VO_TYPE; + } + + put_bits(&s->pb, 16, 0); + put_bits(&s->pb, 16, 0x100 + vo_number); /* video obj */ + put_bits(&s->pb, 16, 0); + put_bits(&s->pb, 16, 0x120 + vol_number); /* video obj layer */ + + put_bits(&s->pb, 1, 0); /* random access vol */ + put_bits(&s->pb, 8, s->vo_type); /* video obj type indication */ + if(s->workaround_bugs & FF_BUG_MS) { + put_bits(&s->pb, 1, 0); /* is obj layer id= no */ + } else { + put_bits(&s->pb, 1, 1); /* is obj layer id= yes */ + put_bits(&s->pb, 4, vo_ver_id); /* is obj layer ver id */ + put_bits(&s->pb, 3, 1); /* is obj layer priority */ + } + + aspect_to_info(s, s->avctx->sample_aspect_ratio); + + put_bits(&s->pb, 4, s->aspect_ratio_info);/* aspect ratio info */ + 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->workaround_bugs & FF_BUG_MS) { // + put_bits(&s->pb, 1, 0); /* vol control parameters= no @@@ */ + } else { + put_bits(&s->pb, 1, 1); /* vol control parameters= yes */ + put_bits(&s->pb, 2, 1); /* chroma format YUV 420/YV12 */ + put_bits(&s->pb, 1, s->low_delay); + put_bits(&s->pb, 1, 0); /* vbv parameters= no */ + } + + put_bits(&s->pb, 2, RECT_SHAPE); /* vol shape= rectangle */ + put_bits(&s->pb, 1, 1); /* marker bit */ + + put_bits(&s->pb, 16, s->avctx->time_base.den); + if (s->time_increment_bits < 1) + s->time_increment_bits = 1; + put_bits(&s->pb, 1, 1); /* marker bit */ + put_bits(&s->pb, 1, 0); /* fixed vop rate=no */ + put_bits(&s->pb, 1, 1); /* marker bit */ + put_bits(&s->pb, 13, s->width); /* vol width */ + put_bits(&s->pb, 1, 1); /* marker bit */ + put_bits(&s->pb, 13, s->height); /* vol height */ + put_bits(&s->pb, 1, 1); /* marker bit */ + put_bits(&s->pb, 1, s->progressive_sequence ? 0 : 1); + put_bits(&s->pb, 1, 1); /* obmc disable */ + if (vo_ver_id == 1) { + put_bits(&s->pb, 1, s->vol_sprite_usage); /* sprite enable */ + }else{ + put_bits(&s->pb, 2, s->vol_sprite_usage); /* sprite enable */ + } + + put_bits(&s->pb, 1, 0); /* not 8 bit == false */ + put_bits(&s->pb, 1, s->mpeg_quant); /* quant type= (0=h263 style)*/ + + if(s->mpeg_quant){ + ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix); + ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix); + } + + if (vo_ver_id != 1) + put_bits(&s->pb, 1, s->quarter_sample); + put_bits(&s->pb, 1, 1); /* complexity estimation disable */ + s->resync_marker= s->rtp_mode; + put_bits(&s->pb, 1, s->resync_marker ? 0 : 1);/* resync marker disable */ + put_bits(&s->pb, 1, s->data_partitioning ? 1 : 0); + if(s->data_partitioning){ + put_bits(&s->pb, 1, 0); /* no rvlc */ + } + + if (vo_ver_id != 1){ + put_bits(&s->pb, 1, 0); /* newpred */ + put_bits(&s->pb, 1, 0); /* reduced res vop */ + } + put_bits(&s->pb, 1, 0); /* scalability */ + + ff_mpeg4_stuffing(&s->pb); + + /* user data */ + if(!(s->flags & CODEC_FLAG_BITEXACT)){ + put_bits(&s->pb, 16, 0); + put_bits(&s->pb, 16, 0x1B2); /* user_data */ + ff_put_string(&s->pb, LIBAVCODEC_IDENT, 0); + } +} + +/* write mpeg4 VOP header */ +void mpeg4_encode_picture_header(MpegEncContext * s, int picture_number) +{ + int time_incr; + int time_div, time_mod; + + if(s->pict_type==FF_I_TYPE){ + if(!(s->flags&CODEC_FLAG_GLOBAL_HEADER)){ + if(s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT) //HACK, the reference sw is buggy + mpeg4_encode_visual_object_header(s); + if(s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT || picture_number==0) //HACK, the reference sw is buggy + mpeg4_encode_vol_header(s, 0, 0); + } + if(!(s->workaround_bugs & FF_BUG_MS)) + mpeg4_encode_gop_header(s); + } + + s->partitioned_frame= s->data_partitioning && s->pict_type!=FF_B_TYPE; + + put_bits(&s->pb, 16, 0); /* vop header */ + put_bits(&s->pb, 16, VOP_STARTCODE); /* vop header */ + put_bits(&s->pb, 2, s->pict_type - 1); /* pict type: I = 0 , P = 1 */ + + assert(s->time>=0); + time_div= s->time/s->avctx->time_base.den; + time_mod= s->time%s->avctx->time_base.den; + time_incr= time_div - s->last_time_base; + assert(time_incr >= 0); + while(time_incr--) + put_bits(&s->pb, 1, 1); + + put_bits(&s->pb, 1, 0); + + put_bits(&s->pb, 1, 1); /* marker */ + put_bits(&s->pb, s->time_increment_bits, time_mod); /* time increment */ + put_bits(&s->pb, 1, 1); /* marker */ + put_bits(&s->pb, 1, 1); /* vop coded */ + if ( s->pict_type == FF_P_TYPE + || (s->pict_type == FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE)) { + put_bits(&s->pb, 1, s->no_rounding); /* rounding type */ + } + put_bits(&s->pb, 3, 0); /* intra dc VLC threshold */ + if(!s->progressive_sequence){ + put_bits(&s->pb, 1, s->current_picture_ptr->top_field_first); + put_bits(&s->pb, 1, s->alternate_scan); + } + //FIXME sprite stuff + + put_bits(&s->pb, 5, s->qscale); + + if (s->pict_type != FF_I_TYPE) + put_bits(&s->pb, 3, s->f_code); /* fcode_for */ + if (s->pict_type == FF_B_TYPE) + put_bits(&s->pb, 3, s->b_code); /* fcode_back */ +} + void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code) { int range, l, bit_size, sign, code, bits; @@ -2289,261 +2757,6 @@ void h263_encode_init(MpegEncContext *s) s->c_dc_scale_table= ff_mpeg1_dc_scale_table; } } - -/***************************************************/ -/** - * add mpeg4 stuffing bits (01...1) - */ -void ff_mpeg4_stuffing(PutBitContext * pbc) -{ - int length; - put_bits(pbc, 1, 0); - length= (-put_bits_count(pbc))&7; - if(length) put_bits(pbc, length, (1<<length)-1); -} - -/* must be called before writing the header */ -void ff_set_mpeg4_time(MpegEncContext * s){ - if(s->pict_type==FF_B_TYPE){ - ff_mpeg4_init_direct_mv(s); - }else{ - s->last_time_base= s->time_base; - s->time_base= s->time/s->avctx->time_base.den; - } -} - -static void mpeg4_encode_gop_header(MpegEncContext * s){ - int hours, minutes, seconds; - int64_t time; - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, GOP_STARTCODE); - - time= s->current_picture_ptr->pts; - if(s->reordered_input_picture[1]) - time= FFMIN(time, s->reordered_input_picture[1]->pts); - time= time*s->avctx->time_base.num; - - seconds= time/s->avctx->time_base.den; - minutes= seconds/60; seconds %= 60; - hours= minutes/60; minutes %= 60; - hours%=24; - - put_bits(&s->pb, 5, hours); - put_bits(&s->pb, 6, minutes); - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, 6, seconds); - - put_bits(&s->pb, 1, !!(s->flags&CODEC_FLAG_CLOSED_GOP)); - put_bits(&s->pb, 1, 0); //broken link == NO - - s->last_time_base= time / s->avctx->time_base.den; - - ff_mpeg4_stuffing(&s->pb); -} - -static void mpeg4_encode_visual_object_header(MpegEncContext * s){ - int profile_and_level_indication; - int vo_ver_id; - - if(s->avctx->profile != FF_PROFILE_UNKNOWN){ - profile_and_level_indication = s->avctx->profile << 4; - }else if(s->max_b_frames || s->quarter_sample){ - profile_and_level_indication= 0xF0; // adv simple - }else{ - profile_and_level_indication= 0x00; // simple - } - - if(s->avctx->level != FF_LEVEL_UNKNOWN){ - profile_and_level_indication |= s->avctx->level; - }else{ - profile_and_level_indication |= 1; //level 1 - } - - if(profile_and_level_indication>>4 == 0xF){ - vo_ver_id= 5; - }else{ - vo_ver_id= 1; - } - - //FIXME levels - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, VOS_STARTCODE); - - put_bits(&s->pb, 8, profile_and_level_indication); - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, VISUAL_OBJ_STARTCODE); - - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, 4, vo_ver_id); - put_bits(&s->pb, 3, 1); //priority - - put_bits(&s->pb, 4, 1); //visual obj type== video obj - - put_bits(&s->pb, 1, 0); //video signal type == no clue //FIXME - - ff_mpeg4_stuffing(&s->pb); -} - -static void mpeg4_encode_vol_header(MpegEncContext * s, int vo_number, int vol_number) -{ - int vo_ver_id; - - if (!CONFIG_MPEG4_ENCODER) return; - - if(s->max_b_frames || s->quarter_sample){ - vo_ver_id= 5; - s->vo_type= ADV_SIMPLE_VO_TYPE; - }else{ - vo_ver_id= 1; - s->vo_type= SIMPLE_VO_TYPE; - } - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, 0x100 + vo_number); /* video obj */ - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, 0x120 + vol_number); /* video obj layer */ - - put_bits(&s->pb, 1, 0); /* random access vol */ - put_bits(&s->pb, 8, s->vo_type); /* video obj type indication */ - if(s->workaround_bugs & FF_BUG_MS) { - put_bits(&s->pb, 1, 0); /* is obj layer id= no */ - } else { - put_bits(&s->pb, 1, 1); /* is obj layer id= yes */ - put_bits(&s->pb, 4, vo_ver_id); /* is obj layer ver id */ - put_bits(&s->pb, 3, 1); /* is obj layer priority */ - } - - aspect_to_info(s, s->avctx->sample_aspect_ratio); - - put_bits(&s->pb, 4, s->aspect_ratio_info);/* aspect ratio info */ - 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->workaround_bugs & FF_BUG_MS) { // - put_bits(&s->pb, 1, 0); /* vol control parameters= no @@@ */ - } else { - put_bits(&s->pb, 1, 1); /* vol control parameters= yes */ - put_bits(&s->pb, 2, 1); /* chroma format YUV 420/YV12 */ - put_bits(&s->pb, 1, s->low_delay); - put_bits(&s->pb, 1, 0); /* vbv parameters= no */ - } - - put_bits(&s->pb, 2, RECT_SHAPE); /* vol shape= rectangle */ - put_bits(&s->pb, 1, 1); /* marker bit */ - - put_bits(&s->pb, 16, s->avctx->time_base.den); - if (s->time_increment_bits < 1) - s->time_increment_bits = 1; - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 1, 0); /* fixed vop rate=no */ - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 13, s->width); /* vol width */ - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 13, s->height); /* vol height */ - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 1, s->progressive_sequence ? 0 : 1); - put_bits(&s->pb, 1, 1); /* obmc disable */ - if (vo_ver_id == 1) { - put_bits(&s->pb, 1, s->vol_sprite_usage); /* sprite enable */ - }else{ - put_bits(&s->pb, 2, s->vol_sprite_usage); /* sprite enable */ - } - - put_bits(&s->pb, 1, 0); /* not 8 bit == false */ - put_bits(&s->pb, 1, s->mpeg_quant); /* quant type= (0=h263 style)*/ - - if(s->mpeg_quant){ - ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix); - ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix); - } - - if (vo_ver_id != 1) - put_bits(&s->pb, 1, s->quarter_sample); - put_bits(&s->pb, 1, 1); /* complexity estimation disable */ - s->resync_marker= s->rtp_mode; - put_bits(&s->pb, 1, s->resync_marker ? 0 : 1);/* resync marker disable */ - put_bits(&s->pb, 1, s->data_partitioning ? 1 : 0); - if(s->data_partitioning){ - put_bits(&s->pb, 1, 0); /* no rvlc */ - } - - if (vo_ver_id != 1){ - put_bits(&s->pb, 1, 0); /* newpred */ - put_bits(&s->pb, 1, 0); /* reduced res vop */ - } - put_bits(&s->pb, 1, 0); /* scalability */ - - ff_mpeg4_stuffing(&s->pb); - - /* user data */ - if(!(s->flags & CODEC_FLAG_BITEXACT)){ - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, 0x1B2); /* user_data */ - ff_put_string(&s->pb, LIBAVCODEC_IDENT, 0); - } -} - -/* write mpeg4 VOP header */ -void mpeg4_encode_picture_header(MpegEncContext * s, int picture_number) -{ - int time_incr; - int time_div, time_mod; - - if(s->pict_type==FF_I_TYPE){ - if(!(s->flags&CODEC_FLAG_GLOBAL_HEADER)){ - if(s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT) //HACK, the reference sw is buggy - mpeg4_encode_visual_object_header(s); - if(s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT || picture_number==0) //HACK, the reference sw is buggy - mpeg4_encode_vol_header(s, 0, 0); - } - if(!(s->workaround_bugs & FF_BUG_MS)) - mpeg4_encode_gop_header(s); - } - - s->partitioned_frame= s->data_partitioning && s->pict_type!=FF_B_TYPE; - - put_bits(&s->pb, 16, 0); /* vop header */ - put_bits(&s->pb, 16, VOP_STARTCODE); /* vop header */ - put_bits(&s->pb, 2, s->pict_type - 1); /* pict type: I = 0 , P = 1 */ - - assert(s->time>=0); - time_div= s->time/s->avctx->time_base.den; - time_mod= s->time%s->avctx->time_base.den; - time_incr= time_div - s->last_time_base; - assert(time_incr >= 0); - while(time_incr--) - put_bits(&s->pb, 1, 1); - - put_bits(&s->pb, 1, 0); - - put_bits(&s->pb, 1, 1); /* marker */ - put_bits(&s->pb, s->time_increment_bits, time_mod); /* time increment */ - put_bits(&s->pb, 1, 1); /* marker */ - put_bits(&s->pb, 1, 1); /* vop coded */ - if ( s->pict_type == FF_P_TYPE - || (s->pict_type == FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE)) { - put_bits(&s->pb, 1, s->no_rounding); /* rounding type */ - } - put_bits(&s->pb, 3, 0); /* intra dc VLC threshold */ - if(!s->progressive_sequence){ - put_bits(&s->pb, 1, s->current_picture_ptr->top_field_first); - put_bits(&s->pb, 1, s->alternate_scan); - } - //FIXME sprite stuff - - put_bits(&s->pb, 5, s->qscale); - - if (s->pict_type != FF_I_TYPE) - put_bits(&s->pb, 3, s->f_code); /* fcode_for */ - if (s->pict_type == FF_B_TYPE) - put_bits(&s->pb, 3, s->b_code); /* fcode_back */ -} - #endif //CONFIG_ENCODERS /** @@ -2606,234 +2819,6 @@ void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n, } -#if CONFIG_ENCODERS - -/** - * encodes the dc value. - * @param n block index (0-3 are luma, 4-5 are chroma) - */ -static inline void mpeg4_encode_dc(PutBitContext * s, int level, int n) -{ -#if 1 - level+=256; - if (n < 4) { - /* luminance */ - put_bits(s, uni_DCtab_lum_len[level], uni_DCtab_lum_bits[level]); - } else { - /* chrominance */ - put_bits(s, uni_DCtab_chrom_len[level], uni_DCtab_chrom_bits[level]); - } -#else - int size, v; - /* find number of bits */ - size = 0; - v = abs(level); - while (v) { - v >>= 1; - size++; - } - - if (n < 4) { - /* luminance */ - put_bits(&s->pb, DCtab_lum[size][1], DCtab_lum[size][0]); - } else { - /* chrominance */ - put_bits(&s->pb, DCtab_chrom[size][1], DCtab_chrom[size][0]); - } - - /* encode remaining bits */ - if (size > 0) { - if (level < 0) - level = (-level) ^ ((1 << size) - 1); - put_bits(&s->pb, size, level); - if (size > 8) - put_bits(&s->pb, 1, 1); - } -#endif -} - -static inline int mpeg4_get_dc_length(int level, int n){ - if (n < 4) { - return uni_DCtab_lum_len[level + 256]; - } else { - return uni_DCtab_chrom_len[level + 256]; - } -} - -/** - * encodes a 8x8 block - * @param n block index (0-3 are luma, 4-5 are chroma) - */ -static inline void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n, int intra_dc, - uint8_t *scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb) -{ - int i, last_non_zero; -#if 0 //variables for the outcommented version - int code, sign, last; -#endif - const RLTable *rl; - uint32_t *bits_tab; - uint8_t *len_tab; - const int last_index = s->block_last_index[n]; - - if (s->mb_intra) { //Note gcc (3.2.1 at least) will optimize this away - /* mpeg4 based DC predictor */ - mpeg4_encode_dc(dc_pb, intra_dc, n); - if(last_index<1) return; - i = 1; - rl = &rl_intra; - bits_tab= uni_mpeg4_intra_rl_bits; - len_tab = uni_mpeg4_intra_rl_len; - } else { - if(last_index<0) return; - i = 0; - rl = &rl_inter; - bits_tab= uni_mpeg4_inter_rl_bits; - len_tab = uni_mpeg4_inter_rl_len; - } - - /* AC coefs */ - last_non_zero = i - 1; -#if 1 - for (; i < last_index; i++) { - int level = block[ scan_table[i] ]; - if (level) { - int run = i - last_non_zero - 1; - level+=64; - if((level&(~127)) == 0){ - const int index= UNI_MPEG4_ENC_INDEX(0, run, level); - put_bits(ac_pb, len_tab[index], bits_tab[index]); - }else{ //ESC3 - put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(0<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1); - } - last_non_zero = i; - } - } - /*if(i<=last_index)*/{ - int level = block[ scan_table[i] ]; - int run = i - last_non_zero - 1; - level+=64; - if((level&(~127)) == 0){ - const int index= UNI_MPEG4_ENC_INDEX(1, run, level); - put_bits(ac_pb, len_tab[index], bits_tab[index]); - }else{ //ESC3 - put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(1<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1); - } - } -#else - for (; i <= last_index; i++) { - const int slevel = block[ scan_table[i] ]; - if (slevel) { - int level; - int run = i - last_non_zero - 1; - last = (i == last_index); - sign = 0; - level = slevel; - if (level < 0) { - sign = 1; - level = -level; - } - code = get_rl_index(rl, last, run, level); - put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); - if (code == rl->n) { - int level1, run1; - level1 = level - rl->max_level[last][run]; - if (level1 < 1) - goto esc2; - code = get_rl_index(rl, last, run, level1); - if (code == rl->n) { - esc2: - put_bits(ac_pb, 1, 1); - if (level > MAX_LEVEL) - goto esc3; - run1 = run - rl->max_run[last][level] - 1; - if (run1 < 0) - goto esc3; - code = get_rl_index(rl, last, run1, level); - if (code == rl->n) { - esc3: - /* third escape */ - put_bits(ac_pb, 1, 1); - put_bits(ac_pb, 1, last); - put_bits(ac_pb, 6, run); - put_bits(ac_pb, 1, 1); - put_sbits(ac_pb, 12, slevel); - put_bits(ac_pb, 1, 1); - } else { - /* second escape */ - put_bits(ac_pb, 1, 0); - put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); - put_bits(ac_pb, 1, sign); - } - } else { - /* first escape */ - put_bits(ac_pb, 1, 0); - put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); - put_bits(ac_pb, 1, sign); - } - } else { - put_bits(ac_pb, 1, sign); - } - last_non_zero = i; - } - } -#endif -} - -static int mpeg4_get_block_length(MpegEncContext * s, DCTELEM * block, int n, int intra_dc, - uint8_t *scan_table) -{ - int i, last_non_zero; - uint8_t *len_tab; - const int last_index = s->block_last_index[n]; - int len=0; - - if (s->mb_intra) { //Note gcc (3.2.1 at least) will optimize this away - /* mpeg4 based DC predictor */ - len += mpeg4_get_dc_length(intra_dc, n); - if(last_index<1) return len; - i = 1; - len_tab = uni_mpeg4_intra_rl_len; - } else { - if(last_index<0) return 0; - i = 0; - len_tab = uni_mpeg4_inter_rl_len; - } - - /* AC coefs */ - last_non_zero = i - 1; - for (; i < last_index; i++) { - int level = block[ scan_table[i] ]; - if (level) { - int run = i - last_non_zero - 1; - level+=64; - if((level&(~127)) == 0){ - const int index= UNI_MPEG4_ENC_INDEX(0, run, level); - len += len_tab[index]; - }else{ //ESC3 - len += 7+2+1+6+1+12+1; - } - last_non_zero = i; - } - } - /*if(i<=last_index)*/{ - int level = block[ scan_table[i] ]; - int run = i - last_non_zero - 1; - level+=64; - if((level&(~127)) == 0){ - const int index= UNI_MPEG4_ENC_INDEX(1, run, level); - len += len_tab[index]; - }else{ //ESC3 - len += 7+2+1+6+1+12+1; - } - } - - return len; -} - -#endif - - /***********************************************/ /* decoding */ |