diff options
Diffstat (limited to 'src/libffmpeg/libavcodec')
| -rw-r--r-- | src/libffmpeg/libavcodec/h263.c | 1115 | ||||
| -rw-r--r-- | src/libffmpeg/libavcodec/mpeg12.c | 875 | ||||
| -rw-r--r-- | src/libffmpeg/libavcodec/mpegvideo.h | 4 | ||||
| -rw-r--r-- | src/libffmpeg/libavcodec/msmpeg4.c | 609 |
4 files changed, 1290 insertions, 1313 deletions
diff --git a/src/libffmpeg/libavcodec/h263.c b/src/libffmpeg/libavcodec/h263.c index 6a8388ee9..b924a6b5a 100644 --- a/src/libffmpeg/libavcodec/h263.c +++ b/src/libffmpeg/libavcodec/h263.c @@ -57,18 +57,12 @@ static void h263_encode_block(MpegEncContext * s, DCTELEM * block, int n); static void h263p_encode_umotion(MpegEncContext * s, int val); -static inline void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block, - int n, int dc, uint8_t *scan_table, - PutBitContext *dc_pb, PutBitContext *ac_pb); #endif static int h263_decode_motion(MpegEncContext * s, int pred, int fcode); static int h263p_decode_umotion(MpegEncContext * s, int pred); static int h263_decode_block(MpegEncContext * s, DCTELEM * block, int n, int coded); -static inline int mpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr); -static inline int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block, - int n, int coded, int intra, int rvlc); static int mpeg4_get_block_length(MpegEncContext * s, DCTELEM * block, int n, int intra_dc, uint8_t *scan_table); static int h263_pred_dc(MpegEncContext * s, int n, uint16_t **dc_val_ptr); @@ -77,7 +71,6 @@ static void mpeg4_encode_visual_object_header(MpegEncContext * s); static void mpeg4_encode_vol_header(MpegEncContext * s, int vo_number, int vol_number); #endif //CONFIG_ENCODERS static void mpeg4_decode_sprite_trajectory(MpegEncContext * s, GetBitContext *gb); -static inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, int level, int *dir_ptr, int encoding); #ifdef CONFIG_ENCODERS static uint8_t uni_DCtab_lum_len[512]; @@ -664,6 +657,85 @@ void ff_h263_update_motion_val(MpegEncContext * s){ } } +/** + * predicts the dc. + * encoding quantized level -> quantized diff + * decoding quantized diff -> quantized level + * @param n block index (0-3 are luma, 4-5 are chroma) + * @param dir_ptr pointer to an integer where the prediction direction will be stored + */ +static inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, int level, int *dir_ptr, int encoding) +{ + int a, b, c, wrap, pred, scale, ret; + uint16_t *dc_val; + + /* find prediction */ + if (n < 4) { + scale = s->y_dc_scale; + } else { + scale = s->c_dc_scale; + } + if(IS_3IV1) + scale= 8; + + wrap= s->block_wrap[n]; + dc_val = s->dc_val[0] + s->block_index[n]; + + /* B C + * A X + */ + a = dc_val[ - 1]; + b = dc_val[ - 1 - wrap]; + c = dc_val[ - wrap]; + + /* outside slice handling (we can't do that by memset as we need the dc for error resilience) */ + if(s->first_slice_line && n!=3){ + if(n!=2) b=c= 1024; + if(n!=1 && s->mb_x == s->resync_mb_x) b=a= 1024; + } + if(s->mb_x == s->resync_mb_x && s->mb_y == s->resync_mb_y+1){ + if(n==0 || n==4 || n==5) + b=1024; + } + + if (abs(a - b) < abs(b - c)) { + pred = c; + *dir_ptr = 1; /* top */ + } else { + pred = a; + *dir_ptr = 0; /* left */ + } + /* we assume pred is positive */ + pred = FASTDIV((pred + (scale >> 1)), scale); + + if(encoding){ + ret = level - pred; + }else{ + level += pred; + ret= level; + if(s->error_resilience>=3){ + if(level<0){ + av_log(s->avctx, AV_LOG_ERROR, "dc<0 at %dx%d\n", s->mb_x, s->mb_y); + return -1; + } + if(level*scale > 2048 + scale){ + av_log(s->avctx, AV_LOG_ERROR, "dc overflow at %dx%d\n", s->mb_x, s->mb_y); + return -1; + } + } + } + level *=scale; + if(level&(~2047)){ + if(level<0) + level=0; + else if(!(s->workaround_bugs&FF_BUG_DC_CLIP)) + level=2047; + } + dc_val[0]= level; + + return ret; +} + #ifdef CONFIG_ENCODERS static inline int h263_get_motion_length(MpegEncContext * s, int val, int f_code){ @@ -793,6 +865,179 @@ static inline int get_b_cbp(MpegEncContext * s, DCTELEM block[6][64], return cbp; } +/** + * 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 +// if(level<-255 || level>255) printf("dc overflow\n"); + 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_bits(ac_pb, 12, slevel & 0xfff); + 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 inline void mpeg4_encode_blocks(MpegEncContext * s, DCTELEM block[6][64], int intra_dc[6], uint8_t **scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb){ int i; @@ -2478,85 +2723,6 @@ void ff_set_qscale(MpegEncContext * s, int qscale) } /** - * predicts the dc. - * encoding quantized level -> quantized diff - * decoding quantized diff -> quantized level - * @param n block index (0-3 are luma, 4-5 are chroma) - * @param dir_ptr pointer to an integer where the prediction direction will be stored - */ -static inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, int level, int *dir_ptr, int encoding) -{ - int a, b, c, wrap, pred, scale, ret; - uint16_t *dc_val; - - /* find prediction */ - if (n < 4) { - scale = s->y_dc_scale; - } else { - scale = s->c_dc_scale; - } - if(IS_3IV1) - scale= 8; - - wrap= s->block_wrap[n]; - dc_val = s->dc_val[0] + s->block_index[n]; - - /* B C - * A X - */ - a = dc_val[ - 1]; - b = dc_val[ - 1 - wrap]; - c = dc_val[ - wrap]; - - /* outside slice handling (we can't do that by memset as we need the dc for error resilience) */ - if(s->first_slice_line && n!=3){ - if(n!=2) b=c= 1024; - if(n!=1 && s->mb_x == s->resync_mb_x) b=a= 1024; - } - if(s->mb_x == s->resync_mb_x && s->mb_y == s->resync_mb_y+1){ - if(n==0 || n==4 || n==5) - b=1024; - } - - if (abs(a - b) < abs(b - c)) { - pred = c; - *dir_ptr = 1; /* top */ - } else { - pred = a; - *dir_ptr = 0; /* left */ - } - /* we assume pred is positive */ - pred = FASTDIV((pred + (scale >> 1)), scale); - - if(encoding){ - ret = level - pred; - }else{ - level += pred; - ret= level; - if(s->error_resilience>=3){ - if(level<0){ - av_log(s->avctx, AV_LOG_ERROR, "dc<0 at %dx%d\n", s->mb_x, s->mb_y); - return -1; - } - if(level*scale > 2048 + scale){ - av_log(s->avctx, AV_LOG_ERROR, "dc overflow at %dx%d\n", s->mb_x, s->mb_y); - return -1; - } - } - } - level *=scale; - if(level&(~2047)){ - if(level<0) - level=0; - else if(!(s->workaround_bugs&FF_BUG_DC_CLIP)) - level=2047; - } - dc_val[0]= level; - - return ret; -} - -/** * predicts the ac. * @param n block index (0-3 are luma, 4-5 are chroma) * @param dir the ac prediction direction @@ -2618,179 +2784,6 @@ void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n, #ifdef 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 -// if(level<-255 || level>255) printf("dc overflow\n"); - 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_bits(ac_pb, 12, slevel & 0xfff); - 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) { @@ -3392,6 +3385,53 @@ static inline int get_amv(MpegEncContext *s, int n){ } /** + * decodes the dc value. + * @param n block index (0-3 are luma, 4-5 are chroma) + * @param dir_ptr the prediction direction will be stored here + * @return the quantized dc + */ +static inline int mpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr) +{ + int level, code; + + if (n < 4) + code = get_vlc2(&s->gb, dc_lum.table, DC_VLC_BITS, 1); + else + code = get_vlc2(&s->gb, dc_chrom.table, DC_VLC_BITS, 1); + if (code < 0 || code > 9 /* && s->nbit<9 */){ + av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n"); + return -1; + } + if (code == 0) { + level = 0; + } else { + if(IS_3IV1){ + if(code==1) + level= 2*get_bits1(&s->gb)-1; + else{ + if(get_bits1(&s->gb)) + level = get_bits(&s->gb, code-1) + (1<<(code-1)); + else + level = -get_bits(&s->gb, code-1) - (1<<(code-1)); + } + }else{ + level = get_xbits(&s->gb, code); + } + + if (code > 8){ + if(get_bits1(&s->gb)==0){ /* marker */ + if(s->error_resilience>=2){ + av_log(s->avctx, AV_LOG_ERROR, "dc marker bit missing\n"); + return -1; + } + } + } + } + + return ff_mpeg4_pred_dc(s, n, level, dir_ptr, 0); +} + +/** * decodes first partition. * @return number of MBs decoded or <0 if an error occured */ @@ -3697,6 +3737,261 @@ int ff_mpeg4_decode_partitions(MpegEncContext *s) } /** + * decodes a block. + * @return <0 if an error occured + */ +static inline int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block, + int n, int coded, int intra, int rvlc) +{ + int level, i, last, run; + int dc_pred_dir; + RLTable * rl; + RL_VLC_ELEM * rl_vlc; + const uint8_t * scan_table; + int qmul, qadd; + + //Note intra & rvlc should be optimized away if this is inlined + + if(intra) { + if(s->qscale < s->intra_dc_threshold){ + /* DC coef */ + if(s->partitioned_frame){ + level = s->dc_val[0][ s->block_index[n] ]; + if(n<4) level= FASTDIV((level + (s->y_dc_scale>>1)), s->y_dc_scale); + else level= FASTDIV((level + (s->c_dc_scale>>1)), s->c_dc_scale); + dc_pred_dir= (s->pred_dir_table[s->mb_x + s->mb_y*s->mb_stride]<<n)&32; + }else{ + level = mpeg4_decode_dc(s, n, &dc_pred_dir); + if (level < 0) + return -1; + } + block[0] = level; + i = 0; + }else{ + i = -1; + } + if (!coded) + goto not_coded; + + if(rvlc){ + rl = &rvlc_rl_intra; + rl_vlc = rvlc_rl_intra.rl_vlc[0]; + }else{ + rl = &rl_intra; + rl_vlc = rl_intra.rl_vlc[0]; + } + if (s->ac_pred) { + if (dc_pred_dir == 0) + scan_table = s->intra_v_scantable.permutated; /* left */ + else + scan_table = s->intra_h_scantable.permutated; /* top */ + } else { + scan_table = s->intra_scantable.permutated; + } + qmul=1; + qadd=0; + } else { + i = -1; + if (!coded) { + s->block_last_index[n] = i; + return 0; + } + if(rvlc) rl = &rvlc_rl_inter; + else rl = &rl_inter; + + scan_table = s->intra_scantable.permutated; + + if(s->mpeg_quant){ + qmul=1; + qadd=0; + if(rvlc){ + rl_vlc = rvlc_rl_inter.rl_vlc[0]; + }else{ + rl_vlc = rl_inter.rl_vlc[0]; + } + }else{ + qmul = s->qscale << 1; + qadd = (s->qscale - 1) | 1; + if(rvlc){ + rl_vlc = rvlc_rl_inter.rl_vlc[s->qscale]; + }else{ + rl_vlc = rl_inter.rl_vlc[s->qscale]; + } + } + } + { + OPEN_READER(re, &s->gb); + for(;;) { + UPDATE_CACHE(re, &s->gb); + GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 0); + if (level==0) { + /* escape */ + if(rvlc){ + if(SHOW_UBITS(re, &s->gb, 1)==0){ + av_log(s->avctx, AV_LOG_ERROR, "1. marker bit missing in rvlc esc\n"); + return -1; + }; SKIP_CACHE(re, &s->gb, 1); + + last= SHOW_UBITS(re, &s->gb, 1); SKIP_CACHE(re, &s->gb, 1); + run= SHOW_UBITS(re, &s->gb, 6); LAST_SKIP_CACHE(re, &s->gb, 6); + SKIP_COUNTER(re, &s->gb, 1+1+6); + UPDATE_CACHE(re, &s->gb); + + if(SHOW_UBITS(re, &s->gb, 1)==0){ + av_log(s->avctx, AV_LOG_ERROR, "2. marker bit missing in rvlc esc\n"); + return -1; + }; SKIP_CACHE(re, &s->gb, 1); + + level= SHOW_UBITS(re, &s->gb, 11); SKIP_CACHE(re, &s->gb, 11); + + if(SHOW_UBITS(re, &s->gb, 5)!=0x10){ + av_log(s->avctx, AV_LOG_ERROR, "reverse esc missing\n"); + return -1; + }; SKIP_CACHE(re, &s->gb, 5); + + level= level * qmul + qadd; + level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); LAST_SKIP_CACHE(re, &s->gb, 1); + SKIP_COUNTER(re, &s->gb, 1+11+5+1); + + i+= run + 1; + if(last) i+=192; + }else{ + int cache; + cache= GET_CACHE(re, &s->gb); + + if(IS_3IV1) + cache ^= 0xC0000000; + + if (cache&0x80000000) { + if (cache&0x40000000) { + /* third escape */ + SKIP_CACHE(re, &s->gb, 2); + last= SHOW_UBITS(re, &s->gb, 1); SKIP_CACHE(re, &s->gb, 1); + run= SHOW_UBITS(re, &s->gb, 6); LAST_SKIP_CACHE(re, &s->gb, 6); + SKIP_COUNTER(re, &s->gb, 2+1+6); + UPDATE_CACHE(re, &s->gb); + + if(IS_3IV1){ + level= SHOW_SBITS(re, &s->gb, 12); LAST_SKIP_BITS(re, &s->gb, 12); + }else{ + if(SHOW_UBITS(re, &s->gb, 1)==0){ + av_log(s->avctx, AV_LOG_ERROR, "1. marker bit missing in 3. esc\n"); + return -1; + }; SKIP_CACHE(re, &s->gb, 1); + + level= SHOW_SBITS(re, &s->gb, 12); SKIP_CACHE(re, &s->gb, 12); + + if(SHOW_UBITS(re, &s->gb, 1)==0){ + av_log(s->avctx, AV_LOG_ERROR, "2. marker bit missing in 3. esc\n"); + return -1; + }; LAST_SKIP_CACHE(re, &s->gb, 1); + + SKIP_COUNTER(re, &s->gb, 1+12+1); + } + +#if 0 + if(s->error_resilience >= FF_ER_COMPLIANT){ + const int abs_level= ABS(level); + if(abs_level<=MAX_LEVEL && run<=MAX_RUN){ + const int run1= run - rl->max_run[last][abs_level] - 1; + if(abs_level <= rl->max_level[last][run]){ + av_log(s->avctx, AV_LOG_ERROR, "illegal 3. esc, vlc encoding possible\n"); + return -1; + } + if(s->error_resilience > FF_ER_COMPLIANT){ + if(abs_level <= rl->max_level[last][run]*2){ + fprintf(stderr, "illegal 3. esc, esc 1 encoding possible\n"); + return -1; + } + if(run1 >= 0 && abs_level <= rl->max_level[last][run1]){ + fprintf(stderr, "illegal 3. esc, esc 2 encoding possible\n"); + return -1; + } + } + } + } +#endif + if (level>0) level= level * qmul + qadd; + else level= level * qmul - qadd; + + if((unsigned)(level + 2048) > 4095){ + if(s->error_resilience > FF_ER_COMPLIANT){ + if(level > 2560 || level<-2560){ + av_log(s->avctx, AV_LOG_ERROR, "|level| overflow in 3. esc, qp=%d\n", s->qscale); + return -1; + } + } + level= level<0 ? -2048 : 2047; + } + + i+= run + 1; + if(last) i+=192; + } else { + /* second escape */ +#if MIN_CACHE_BITS < 20 + LAST_SKIP_BITS(re, &s->gb, 2); + UPDATE_CACHE(re, &s->gb); +#else + SKIP_BITS(re, &s->gb, 2); +#endif + GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); + i+= run + rl->max_run[run>>7][level/qmul] +1; //FIXME opt indexing + level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); + LAST_SKIP_BITS(re, &s->gb, 1); + } + } else { + /* first escape */ +#if MIN_CACHE_BITS < 19 + LAST_SKIP_BITS(re, &s->gb, 1); + UPDATE_CACHE(re, &s->gb); +#else + SKIP_BITS(re, &s->gb, 1); +#endif + GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); + i+= run; + level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing + level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); + LAST_SKIP_BITS(re, &s->gb, 1); + } + } + } else { + i+= run; + level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); + LAST_SKIP_BITS(re, &s->gb, 1); + } + if (i > 62){ + i-= 192; + if(i&(~63)){ + av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y); + return -1; + } + + block[scan_table[i]] = level; + break; + } + + block[scan_table[i]] = level; + } + CLOSE_READER(re, &s->gb); + } + not_coded: + if (intra) { + if(s->qscale >= s->intra_dc_threshold){ + block[0] = ff_mpeg4_pred_dc(s, n, block[0], &dc_pred_dir, 0); + + if(i == -1) i=0; + } + + mpeg4_pred_ac(s, block, n, dc_pred_dir); + if (s->ac_pred) { + i = 63; /* XXX: not optimal */ + } + } + s->block_last_index[n] = i; + return 0; +} + +/** * decode partition C of one MB. * @return <0 if an error occured */ @@ -4675,308 +4970,6 @@ not_coded: return 0; } -/** - * decodes the dc value. - * @param n block index (0-3 are luma, 4-5 are chroma) - * @param dir_ptr the prediction direction will be stored here - * @return the quantized dc - */ -static inline int mpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr) -{ - int level, code; - - if (n < 4) - code = get_vlc2(&s->gb, dc_lum.table, DC_VLC_BITS, 1); - else - code = get_vlc2(&s->gb, dc_chrom.table, DC_VLC_BITS, 1); - if (code < 0 || code > 9 /* && s->nbit<9 */){ - av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n"); - return -1; - } - if (code == 0) { - level = 0; - } else { - if(IS_3IV1){ - if(code==1) - level= 2*get_bits1(&s->gb)-1; - else{ - if(get_bits1(&s->gb)) - level = get_bits(&s->gb, code-1) + (1<<(code-1)); - else - level = -get_bits(&s->gb, code-1) - (1<<(code-1)); - } - }else{ - level = get_xbits(&s->gb, code); - } - - if (code > 8){ - if(get_bits1(&s->gb)==0){ /* marker */ - if(s->error_resilience>=2){ - av_log(s->avctx, AV_LOG_ERROR, "dc marker bit missing\n"); - return -1; - } - } - } - } - - return ff_mpeg4_pred_dc(s, n, level, dir_ptr, 0); -} - -/** - * decodes a block. - * @return <0 if an error occured - */ -static inline int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block, - int n, int coded, int intra, int rvlc) -{ - int level, i, last, run; - int dc_pred_dir; - RLTable * rl; - RL_VLC_ELEM * rl_vlc; - const uint8_t * scan_table; - int qmul, qadd; - - //Note intra & rvlc should be optimized away if this is inlined - - if(intra) { - if(s->qscale < s->intra_dc_threshold){ - /* DC coef */ - if(s->partitioned_frame){ - level = s->dc_val[0][ s->block_index[n] ]; - if(n<4) level= FASTDIV((level + (s->y_dc_scale>>1)), s->y_dc_scale); - else level= FASTDIV((level + (s->c_dc_scale>>1)), s->c_dc_scale); - dc_pred_dir= (s->pred_dir_table[s->mb_x + s->mb_y*s->mb_stride]<<n)&32; - }else{ - level = mpeg4_decode_dc(s, n, &dc_pred_dir); - if (level < 0) - return -1; - } - block[0] = level; - i = 0; - }else{ - i = -1; - } - if (!coded) - goto not_coded; - - if(rvlc){ - rl = &rvlc_rl_intra; - rl_vlc = rvlc_rl_intra.rl_vlc[0]; - }else{ - rl = &rl_intra; - rl_vlc = rl_intra.rl_vlc[0]; - } - if (s->ac_pred) { - if (dc_pred_dir == 0) - scan_table = s->intra_v_scantable.permutated; /* left */ - else - scan_table = s->intra_h_scantable.permutated; /* top */ - } else { - scan_table = s->intra_scantable.permutated; - } - qmul=1; - qadd=0; - } else { - i = -1; - if (!coded) { - s->block_last_index[n] = i; - return 0; - } - if(rvlc) rl = &rvlc_rl_inter; - else rl = &rl_inter; - - scan_table = s->intra_scantable.permutated; - - if(s->mpeg_quant){ - qmul=1; - qadd=0; - if(rvlc){ - rl_vlc = rvlc_rl_inter.rl_vlc[0]; - }else{ - rl_vlc = rl_inter.rl_vlc[0]; - } - }else{ - qmul = s->qscale << 1; - qadd = (s->qscale - 1) | 1; - if(rvlc){ - rl_vlc = rvlc_rl_inter.rl_vlc[s->qscale]; - }else{ - rl_vlc = rl_inter.rl_vlc[s->qscale]; - } - } - } - { - OPEN_READER(re, &s->gb); - for(;;) { - UPDATE_CACHE(re, &s->gb); - GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 0); - if (level==0) { - /* escape */ - if(rvlc){ - if(SHOW_UBITS(re, &s->gb, 1)==0){ - av_log(s->avctx, AV_LOG_ERROR, "1. marker bit missing in rvlc esc\n"); - return -1; - }; SKIP_CACHE(re, &s->gb, 1); - - last= SHOW_UBITS(re, &s->gb, 1); SKIP_CACHE(re, &s->gb, 1); - run= SHOW_UBITS(re, &s->gb, 6); LAST_SKIP_CACHE(re, &s->gb, 6); - SKIP_COUNTER(re, &s->gb, 1+1+6); - UPDATE_CACHE(re, &s->gb); - - if(SHOW_UBITS(re, &s->gb, 1)==0){ - av_log(s->avctx, AV_LOG_ERROR, "2. marker bit missing in rvlc esc\n"); - return -1; - }; SKIP_CACHE(re, &s->gb, 1); - - level= SHOW_UBITS(re, &s->gb, 11); SKIP_CACHE(re, &s->gb, 11); - - if(SHOW_UBITS(re, &s->gb, 5)!=0x10){ - av_log(s->avctx, AV_LOG_ERROR, "reverse esc missing\n"); - return -1; - }; SKIP_CACHE(re, &s->gb, 5); - - level= level * qmul + qadd; - level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); LAST_SKIP_CACHE(re, &s->gb, 1); - SKIP_COUNTER(re, &s->gb, 1+11+5+1); - - i+= run + 1; - if(last) i+=192; - }else{ - int cache; - cache= GET_CACHE(re, &s->gb); - - if(IS_3IV1) - cache ^= 0xC0000000; - - if (cache&0x80000000) { - if (cache&0x40000000) { - /* third escape */ - SKIP_CACHE(re, &s->gb, 2); - last= SHOW_UBITS(re, &s->gb, 1); SKIP_CACHE(re, &s->gb, 1); - run= SHOW_UBITS(re, &s->gb, 6); LAST_SKIP_CACHE(re, &s->gb, 6); - SKIP_COUNTER(re, &s->gb, 2+1+6); - UPDATE_CACHE(re, &s->gb); - - if(IS_3IV1){ - level= SHOW_SBITS(re, &s->gb, 12); LAST_SKIP_BITS(re, &s->gb, 12); - }else{ - if(SHOW_UBITS(re, &s->gb, 1)==0){ - av_log(s->avctx, AV_LOG_ERROR, "1. marker bit missing in 3. esc\n"); - return -1; - }; SKIP_CACHE(re, &s->gb, 1); - - level= SHOW_SBITS(re, &s->gb, 12); SKIP_CACHE(re, &s->gb, 12); - - if(SHOW_UBITS(re, &s->gb, 1)==0){ - av_log(s->avctx, AV_LOG_ERROR, "2. marker bit missing in 3. esc\n"); - return -1; - }; LAST_SKIP_CACHE(re, &s->gb, 1); - - SKIP_COUNTER(re, &s->gb, 1+12+1); - } - -#if 0 - if(s->error_resilience >= FF_ER_COMPLIANT){ - const int abs_level= ABS(level); - if(abs_level<=MAX_LEVEL && run<=MAX_RUN){ - const int run1= run - rl->max_run[last][abs_level] - 1; - if(abs_level <= rl->max_level[last][run]){ - av_log(s->avctx, AV_LOG_ERROR, "illegal 3. esc, vlc encoding possible\n"); - return -1; - } - if(s->error_resilience > FF_ER_COMPLIANT){ - if(abs_level <= rl->max_level[last][run]*2){ - fprintf(stderr, "illegal 3. esc, esc 1 encoding possible\n"); - return -1; - } - if(run1 >= 0 && abs_level <= rl->max_level[last][run1]){ - fprintf(stderr, "illegal 3. esc, esc 2 encoding possible\n"); - return -1; - } - } - } - } -#endif - if (level>0) level= level * qmul + qadd; - else level= level * qmul - qadd; - - if((unsigned)(level + 2048) > 4095){ - if(s->error_resilience > FF_ER_COMPLIANT){ - if(level > 2560 || level<-2560){ - av_log(s->avctx, AV_LOG_ERROR, "|level| overflow in 3. esc, qp=%d\n", s->qscale); - return -1; - } - } - level= level<0 ? -2048 : 2047; - } - - i+= run + 1; - if(last) i+=192; - } else { - /* second escape */ -#if MIN_CACHE_BITS < 20 - LAST_SKIP_BITS(re, &s->gb, 2); - UPDATE_CACHE(re, &s->gb); -#else - SKIP_BITS(re, &s->gb, 2); -#endif - GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); - i+= run + rl->max_run[run>>7][level/qmul] +1; //FIXME opt indexing - level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); - LAST_SKIP_BITS(re, &s->gb, 1); - } - } else { - /* first escape */ -#if MIN_CACHE_BITS < 19 - LAST_SKIP_BITS(re, &s->gb, 1); - UPDATE_CACHE(re, &s->gb); -#else - SKIP_BITS(re, &s->gb, 1); -#endif - GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); - i+= run; - level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing - level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); - LAST_SKIP_BITS(re, &s->gb, 1); - } - } - } else { - i+= run; - level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); - LAST_SKIP_BITS(re, &s->gb, 1); - } - if (i > 62){ - i-= 192; - if(i&(~63)){ - av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - - block[scan_table[i]] = level; - break; - } - - block[scan_table[i]] = level; - } - CLOSE_READER(re, &s->gb); - } - not_coded: - if (intra) { - if(s->qscale >= s->intra_dc_threshold){ - block[0] = ff_mpeg4_pred_dc(s, n, block[0], &dc_pred_dir, 0); - - if(i == -1) i=0; - } - - mpeg4_pred_ac(s, block, n, dc_pred_dir); - if (s->ac_pred) { - i = 63; /* XXX: not optimal */ - } - } - s->block_last_index[n] = i; - return 0; -} - /* most is hardcoded. should extend to handle all h263 streams */ int h263_decode_picture_header(MpegEncContext *s) { diff --git a/src/libffmpeg/libavcodec/mpeg12.c b/src/libffmpeg/libavcodec/mpeg12.c index b74412ba8..31bc31ca7 100644 --- a/src/libffmpeg/libavcodec/mpeg12.c +++ b/src/libffmpeg/libavcodec/mpeg12.c @@ -65,21 +65,6 @@ static void mpeg1_encode_block(MpegEncContext *s, int component); static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code); // RAL: f_code parameter added #endif //CONFIG_ENCODERS -static inline int mpeg1_decode_block_inter(MpegEncContext *s, - DCTELEM *block, - int n); -static inline int mpeg1_decode_block_intra(MpegEncContext *s, - DCTELEM *block, - int n); -static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n); -static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, - DCTELEM *block, - int n); -static inline int mpeg2_decode_block_intra(MpegEncContext *s, - DCTELEM *block, - int n); -static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s, DCTELEM *block, int n); -static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n); static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred); static void exchange_uv(MpegEncContext *s); @@ -1054,436 +1039,6 @@ static inline int get_qscale(MpegEncContext *s) #define MT_16X8 2 #define MT_DMV 3 -static int mpeg_decode_mb(MpegEncContext *s, - DCTELEM block[12][64]) -{ - int i, j, k, cbp, val, mb_type, motion_type; - const int mb_block_count = 4 + (1<< s->chroma_format); - - dprintf("decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y); - - assert(s->mb_skipped==0); - - if (s->mb_skip_run-- != 0) { - if(s->pict_type == I_TYPE){ - av_log(s->avctx, AV_LOG_ERROR, "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - - /* skip mb */ - s->mb_intra = 0; - for(i=0;i<12;i++) - s->block_last_index[i] = -1; - if(s->picture_structure == PICT_FRAME) - s->mv_type = MV_TYPE_16X16; - else - s->mv_type = MV_TYPE_FIELD; - if (s->pict_type == P_TYPE) { - /* if P type, zero motion vector is implied */ - s->mv_dir = MV_DIR_FORWARD; - s->mv[0][0][0] = s->mv[0][0][1] = 0; - s->last_mv[0][0][0] = s->last_mv[0][0][1] = 0; - s->last_mv[0][1][0] = s->last_mv[0][1][1] = 0; - s->field_select[0][0]= s->picture_structure - 1; - s->mb_skipped = 1; - s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]= MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; - } else { - int mb_type; - - if(s->mb_x) - mb_type= s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride - 1]; - else - mb_type= s->current_picture.mb_type[ s->mb_width + (s->mb_y-1)*s->mb_stride - 1]; // FIXME not sure if this is allowed in mpeg at all, - if(IS_INTRA(mb_type)) - return -1; - - /* if B type, reuse previous vectors and directions */ - s->mv[0][0][0] = s->last_mv[0][0][0]; - s->mv[0][0][1] = s->last_mv[0][0][1]; - s->mv[1][0][0] = s->last_mv[1][0][0]; - s->mv[1][0][1] = s->last_mv[1][0][1]; - - s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]= - mb_type | MB_TYPE_SKIP; -// assert(s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride - 1]&(MB_TYPE_16x16|MB_TYPE_16x8)); - - if((s->mv[0][0][0]|s->mv[0][0][1]|s->mv[1][0][0]|s->mv[1][0][1])==0) - s->mb_skipped = 1; - } - - return 0; - } - - switch(s->pict_type) { - default: - case I_TYPE: - if (get_bits1(&s->gb) == 0) { - if (get_bits1(&s->gb) == 0){ - av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in I Frame at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA; - } else { - mb_type = MB_TYPE_INTRA; - } - break; - case P_TYPE: - mb_type = get_vlc2(&s->gb, mb_ptype_vlc.table, MB_PTYPE_VLC_BITS, 1); - if (mb_type < 0){ - av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - mb_type = ptype2mb_type[ mb_type ]; - break; - case B_TYPE: - mb_type = get_vlc2(&s->gb, mb_btype_vlc.table, MB_BTYPE_VLC_BITS, 1); - if (mb_type < 0){ - av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - mb_type = btype2mb_type[ mb_type ]; - break; - } - dprintf("mb_type=%x\n", mb_type); -// motion_type = 0; /* avoid warning */ - if (IS_INTRA(mb_type)) { - s->dsp.clear_blocks(s->block[0]); - - if(!s->chroma_y_shift){ - s->dsp.clear_blocks(s->block[6]); - } - - /* compute dct type */ - if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var? - !s->frame_pred_frame_dct) { - s->interlaced_dct = get_bits1(&s->gb); - } - - if (IS_QUANT(mb_type)) - s->qscale = get_qscale(s); - - if (s->concealment_motion_vectors) { - /* just parse them */ - if (s->picture_structure != PICT_FRAME) - skip_bits1(&s->gb); /* field select */ - - s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] = - mpeg_decode_motion(s, s->mpeg_f_code[0][0], s->last_mv[0][0][0]); - s->mv[0][0][1]= s->last_mv[0][0][1]= s->last_mv[0][1][1] = - mpeg_decode_motion(s, s->mpeg_f_code[0][1], s->last_mv[0][0][1]); - - skip_bits1(&s->gb); /* marker */ - }else - memset(s->last_mv, 0, sizeof(s->last_mv)); /* reset mv prediction */ - s->mb_intra = 1; -#ifdef HAVE_XVMC - //one 1 we memcpy blocks in xvmcvideo - if(s->avctx->xvmc_acceleration > 1){ - XVMC_pack_pblocks(s,-1);//inter are always full blocks - if(s->swap_uv){ - exchange_uv(s); - } - } -#endif - - if (s->codec_id == CODEC_ID_MPEG2VIDEO) { - if(s->flags2 & CODEC_FLAG2_FAST){ - for(i=0;i<6;i++) { - mpeg2_fast_decode_block_intra(s, s->pblocks[i], i); - } - }else{ - for(i=0;i<mb_block_count;i++) { - if (mpeg2_decode_block_intra(s, s->pblocks[i], i) < 0) - return -1; - } - } - } else { - for(i=0;i<6;i++) { - if (mpeg1_decode_block_intra(s, s->pblocks[i], i) < 0) - return -1; - } - } - } else { - if (mb_type & MB_TYPE_ZERO_MV){ - assert(mb_type & MB_TYPE_CBP); - - /* compute dct type */ - if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var? - !s->frame_pred_frame_dct) { - s->interlaced_dct = get_bits1(&s->gb); - } - - if (IS_QUANT(mb_type)) - s->qscale = get_qscale(s); - - s->mv_dir = MV_DIR_FORWARD; - if(s->picture_structure == PICT_FRAME) - s->mv_type = MV_TYPE_16X16; - else{ - s->mv_type = MV_TYPE_FIELD; - mb_type |= MB_TYPE_INTERLACED; - s->field_select[0][0]= s->picture_structure - 1; - } - s->last_mv[0][0][0] = 0; - s->last_mv[0][0][1] = 0; - s->last_mv[0][1][0] = 0; - s->last_mv[0][1][1] = 0; - s->mv[0][0][0] = 0; - s->mv[0][0][1] = 0; - }else{ - assert(mb_type & MB_TYPE_L0L1); -//FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED - /* get additionnal motion vector type */ - if (s->frame_pred_frame_dct) - motion_type = MT_FRAME; - else{ - motion_type = get_bits(&s->gb, 2); - } - - /* compute dct type */ - if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var? - !s->frame_pred_frame_dct && HAS_CBP(mb_type)) { - s->interlaced_dct = get_bits1(&s->gb); - } - - if (IS_QUANT(mb_type)) - s->qscale = get_qscale(s); - - /* motion vectors */ - s->mv_dir = 0; - for(i=0;i<2;i++) { - if (USES_LIST(mb_type, i)) { - s->mv_dir |= (MV_DIR_FORWARD >> i); - dprintf("motion_type=%d\n", motion_type); - switch(motion_type) { - case MT_FRAME: /* or MT_16X8 */ - if (s->picture_structure == PICT_FRAME) { - /* MT_FRAME */ - mb_type |= MB_TYPE_16x16; - s->mv_type = MV_TYPE_16X16; - s->mv[i][0][0]= s->last_mv[i][0][0]= s->last_mv[i][1][0] = - mpeg_decode_motion(s, s->mpeg_f_code[i][0], s->last_mv[i][0][0]); - s->mv[i][0][1]= s->last_mv[i][0][1]= s->last_mv[i][1][1] = - mpeg_decode_motion(s, s->mpeg_f_code[i][1], s->last_mv[i][0][1]); - /* full_pel: only for mpeg1 */ - if (s->full_pel[i]){ - s->mv[i][0][0] <<= 1; - s->mv[i][0][1] <<= 1; - } - } else { - /* MT_16X8 */ - mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; - s->mv_type = MV_TYPE_16X8; - for(j=0;j<2;j++) { - s->field_select[i][j] = get_bits1(&s->gb); - for(k=0;k<2;k++) { - val = mpeg_decode_motion(s, s->mpeg_f_code[i][k], - s->last_mv[i][j][k]); - s->last_mv[i][j][k] = val; - s->mv[i][j][k] = val; - } - } - } - break; - case MT_FIELD: - s->mv_type = MV_TYPE_FIELD; - if (s->picture_structure == PICT_FRAME) { - mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; - for(j=0;j<2;j++) { - s->field_select[i][j] = get_bits1(&s->gb); - val = mpeg_decode_motion(s, s->mpeg_f_code[i][0], - s->last_mv[i][j][0]); - s->last_mv[i][j][0] = val; - s->mv[i][j][0] = val; - dprintf("fmx=%d\n", val); - val = mpeg_decode_motion(s, s->mpeg_f_code[i][1], - s->last_mv[i][j][1] >> 1); - s->last_mv[i][j][1] = val << 1; - s->mv[i][j][1] = val; - dprintf("fmy=%d\n", val); - } - } else { - mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; - s->field_select[i][0] = get_bits1(&s->gb); - for(k=0;k<2;k++) { - val = mpeg_decode_motion(s, s->mpeg_f_code[i][k], - s->last_mv[i][0][k]); - s->last_mv[i][0][k] = val; - s->last_mv[i][1][k] = val; - s->mv[i][0][k] = val; - } - } - break; - case MT_DMV: - { - int dmx, dmy, mx, my, m; - - mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0], - s->last_mv[i][0][0]); - s->last_mv[i][0][0] = mx; - s->last_mv[i][1][0] = mx; - dmx = get_dmv(s); - my = mpeg_decode_motion(s, s->mpeg_f_code[i][1], - s->last_mv[i][0][1] >> 1); - dmy = get_dmv(s); - s->mv_type = MV_TYPE_DMV; - - - s->last_mv[i][0][1] = my<<1; - s->last_mv[i][1][1] = my<<1; - - s->mv[i][0][0] = mx; - s->mv[i][0][1] = my; - s->mv[i][1][0] = mx;//not used - s->mv[i][1][1] = my;//not used - - if (s->picture_structure == PICT_FRAME) { - mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; - - //m = 1 + 2 * s->top_field_first; - m = s->top_field_first ? 1 : 3; - - /* top -> top pred */ - s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx; - s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1; - m = 4 - m; - s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx; - s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1; - } else { - mb_type |= MB_TYPE_16x16; - - s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx; - s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy; - if(s->picture_structure == PICT_TOP_FIELD) - s->mv[i][2][1]--; - else - s->mv[i][2][1]++; - } - } - break; - default: - av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - } - } - } - - s->mb_intra = 0; - if (HAS_CBP(mb_type)) { - s->dsp.clear_blocks(s->block[0]); - - if(!s->chroma_y_shift){ - s->dsp.clear_blocks(s->block[6]); - } - - cbp = get_vlc2(&s->gb, mb_pat_vlc.table, MB_PAT_VLC_BITS, 1); - if (cbp < 0 || ((cbp == 0) && (s->chroma_format < 2)) ){ - av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y); - return -1; - } - if(mb_block_count > 6){ - cbp<<= mb_block_count-6; - cbp |= get_bits(&s->gb, mb_block_count-6); - } - -#ifdef HAVE_XVMC - //on 1 we memcpy blocks in xvmcvideo - if(s->avctx->xvmc_acceleration > 1){ - XVMC_pack_pblocks(s,cbp); - if(s->swap_uv){ - exchange_uv(s); - } - } -#endif - - if (s->codec_id == CODEC_ID_MPEG2VIDEO) { - if(s->flags2 & CODEC_FLAG2_FAST){ - for(i=0;i<6;i++) { - if(cbp & 32) { - mpeg2_fast_decode_block_non_intra(s, s->pblocks[i], i); - } else { - s->block_last_index[i] = -1; - } - cbp+=cbp; - } - }else{ - cbp<<= 12-mb_block_count; - - for(i=0;i<mb_block_count;i++) { - if ( cbp & (1<<11) ) { - if (mpeg2_decode_block_non_intra(s, s->pblocks[i], i) < 0) - return -1; - } else { - s->block_last_index[i] = -1; - } - cbp+=cbp; - } - } - } else { - if(s->flags2 & CODEC_FLAG2_FAST){ - for(i=0;i<6;i++) { - if (cbp & 32) { - mpeg1_fast_decode_block_inter(s, s->pblocks[i], i); - } else { - s->block_last_index[i] = -1; - } - cbp+=cbp; - } - }else{ - for(i=0;i<6;i++) { - if (cbp & 32) { - if (mpeg1_decode_block_inter(s, s->pblocks[i], i) < 0) - return -1; - } else { - s->block_last_index[i] = -1; - } - cbp+=cbp; - } - } - } - }else{ - for(i=0;i<6;i++) - s->block_last_index[i] = -1; - } - } - - s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]= mb_type; - - return 0; -} - -/* as h263, but only 17 codes */ -static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred) -{ - int code, sign, val, l, shift; - - code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2); - if (code == 0) { - return pred; - } - if (code < 0) { - return 0xffff; - } - - sign = get_bits1(&s->gb); - shift = fcode - 1; - val = code; - if (shift) { - val = (val - 1) << shift; - val |= get_bits(&s->gb, shift); - val++; - } - if (sign) - val = -val; - val += pred; - - /* modulo decoding */ - l= INT_BIT - 5 - shift; - val = (val<<l)>>l; - return val; -} - static inline int decode_dc(GetBitContext *gb, int component) { int code, diff; @@ -2023,6 +1578,436 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, return 0; } +static int mpeg_decode_mb(MpegEncContext *s, + DCTELEM block[12][64]) +{ + int i, j, k, cbp, val, mb_type, motion_type; + const int mb_block_count = 4 + (1<< s->chroma_format); + + dprintf("decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y); + + assert(s->mb_skipped==0); + + if (s->mb_skip_run-- != 0) { + if(s->pict_type == I_TYPE){ + av_log(s->avctx, AV_LOG_ERROR, "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y); + return -1; + } + + /* skip mb */ + s->mb_intra = 0; + for(i=0;i<12;i++) + s->block_last_index[i] = -1; + if(s->picture_structure == PICT_FRAME) + s->mv_type = MV_TYPE_16X16; + else + s->mv_type = MV_TYPE_FIELD; + if (s->pict_type == P_TYPE) { + /* if P type, zero motion vector is implied */ + s->mv_dir = MV_DIR_FORWARD; + s->mv[0][0][0] = s->mv[0][0][1] = 0; + s->last_mv[0][0][0] = s->last_mv[0][0][1] = 0; + s->last_mv[0][1][0] = s->last_mv[0][1][1] = 0; + s->field_select[0][0]= s->picture_structure - 1; + s->mb_skipped = 1; + s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]= MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; + } else { + int mb_type; + + if(s->mb_x) + mb_type= s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride - 1]; + else + mb_type= s->current_picture.mb_type[ s->mb_width + (s->mb_y-1)*s->mb_stride - 1]; // FIXME not sure if this is allowed in mpeg at all, + if(IS_INTRA(mb_type)) + return -1; + + /* if B type, reuse previous vectors and directions */ + s->mv[0][0][0] = s->last_mv[0][0][0]; + s->mv[0][0][1] = s->last_mv[0][0][1]; + s->mv[1][0][0] = s->last_mv[1][0][0]; + s->mv[1][0][1] = s->last_mv[1][0][1]; + + s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]= + mb_type | MB_TYPE_SKIP; +// assert(s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride - 1]&(MB_TYPE_16x16|MB_TYPE_16x8)); + + if((s->mv[0][0][0]|s->mv[0][0][1]|s->mv[1][0][0]|s->mv[1][0][1])==0) + s->mb_skipped = 1; + } + + return 0; + } + + switch(s->pict_type) { + default: + case I_TYPE: + if (get_bits1(&s->gb) == 0) { + if (get_bits1(&s->gb) == 0){ + av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in I Frame at %d %d\n", s->mb_x, s->mb_y); + return -1; + } + mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA; + } else { + mb_type = MB_TYPE_INTRA; + } + break; + case P_TYPE: + mb_type = get_vlc2(&s->gb, mb_ptype_vlc.table, MB_PTYPE_VLC_BITS, 1); + if (mb_type < 0){ + av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y); + return -1; + } + mb_type = ptype2mb_type[ mb_type ]; + break; + case B_TYPE: + mb_type = get_vlc2(&s->gb, mb_btype_vlc.table, MB_BTYPE_VLC_BITS, 1); + if (mb_type < 0){ + av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y); + return -1; + } + mb_type = btype2mb_type[ mb_type ]; + break; + } + dprintf("mb_type=%x\n", mb_type); +// motion_type = 0; /* avoid warning */ + if (IS_INTRA(mb_type)) { + s->dsp.clear_blocks(s->block[0]); + + if(!s->chroma_y_shift){ + s->dsp.clear_blocks(s->block[6]); + } + + /* compute dct type */ + if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var? + !s->frame_pred_frame_dct) { + s->interlaced_dct = get_bits1(&s->gb); + } + + if (IS_QUANT(mb_type)) + s->qscale = get_qscale(s); + + if (s->concealment_motion_vectors) { + /* just parse them */ + if (s->picture_structure != PICT_FRAME) + skip_bits1(&s->gb); /* field select */ + + s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] = + mpeg_decode_motion(s, s->mpeg_f_code[0][0], s->last_mv[0][0][0]); + s->mv[0][0][1]= s->last_mv[0][0][1]= s->last_mv[0][1][1] = + mpeg_decode_motion(s, s->mpeg_f_code[0][1], s->last_mv[0][0][1]); + + skip_bits1(&s->gb); /* marker */ + }else + memset(s->last_mv, 0, sizeof(s->last_mv)); /* reset mv prediction */ + s->mb_intra = 1; +#ifdef HAVE_XVMC + //one 1 we memcpy blocks in xvmcvideo + if(s->avctx->xvmc_acceleration > 1){ + XVMC_pack_pblocks(s,-1);//inter are always full blocks + if(s->swap_uv){ + exchange_uv(s); + } + } +#endif + + if (s->codec_id == CODEC_ID_MPEG2VIDEO) { + if(s->flags2 & CODEC_FLAG2_FAST){ + for(i=0;i<6;i++) { + mpeg2_fast_decode_block_intra(s, s->pblocks[i], i); + } + }else{ + for(i=0;i<mb_block_count;i++) { + if (mpeg2_decode_block_intra(s, s->pblocks[i], i) < 0) + return -1; + } + } + } else { + for(i=0;i<6;i++) { + if (mpeg1_decode_block_intra(s, s->pblocks[i], i) < 0) + return -1; + } + } + } else { + if (mb_type & MB_TYPE_ZERO_MV){ + assert(mb_type & MB_TYPE_CBP); + + /* compute dct type */ + if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var? + !s->frame_pred_frame_dct) { + s->interlaced_dct = get_bits1(&s->gb); + } + + if (IS_QUANT(mb_type)) + s->qscale = get_qscale(s); + + s->mv_dir = MV_DIR_FORWARD; + if(s->picture_structure == PICT_FRAME) + s->mv_type = MV_TYPE_16X16; + else{ + s->mv_type = MV_TYPE_FIELD; + mb_type |= MB_TYPE_INTERLACED; + s->field_select[0][0]= s->picture_structure - 1; + } + s->last_mv[0][0][0] = 0; + s->last_mv[0][0][1] = 0; + s->last_mv[0][1][0] = 0; + s->last_mv[0][1][1] = 0; + s->mv[0][0][0] = 0; + s->mv[0][0][1] = 0; + }else{ + assert(mb_type & MB_TYPE_L0L1); +//FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED + /* get additionnal motion vector type */ + if (s->frame_pred_frame_dct) + motion_type = MT_FRAME; + else{ + motion_type = get_bits(&s->gb, 2); + } + + /* compute dct type */ + if (s->picture_structure == PICT_FRAME && //FIXME add a interlaced_dct coded var? + !s->frame_pred_frame_dct && HAS_CBP(mb_type)) { + s->interlaced_dct = get_bits1(&s->gb); + } + + if (IS_QUANT(mb_type)) + s->qscale = get_qscale(s); + + /* motion vectors */ + s->mv_dir = 0; + for(i=0;i<2;i++) { + if (USES_LIST(mb_type, i)) { + s->mv_dir |= (MV_DIR_FORWARD >> i); + dprintf("motion_type=%d\n", motion_type); + switch(motion_type) { + case MT_FRAME: /* or MT_16X8 */ + if (s->picture_structure == PICT_FRAME) { + /* MT_FRAME */ + mb_type |= MB_TYPE_16x16; + s->mv_type = MV_TYPE_16X16; + s->mv[i][0][0]= s->last_mv[i][0][0]= s->last_mv[i][1][0] = + mpeg_decode_motion(s, s->mpeg_f_code[i][0], s->last_mv[i][0][0]); + s->mv[i][0][1]= s->last_mv[i][0][1]= s->last_mv[i][1][1] = + mpeg_decode_motion(s, s->mpeg_f_code[i][1], s->last_mv[i][0][1]); + /* full_pel: only for mpeg1 */ + if (s->full_pel[i]){ + s->mv[i][0][0] <<= 1; + s->mv[i][0][1] <<= 1; + } + } else { + /* MT_16X8 */ + mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; + s->mv_type = MV_TYPE_16X8; + for(j=0;j<2;j++) { + s->field_select[i][j] = get_bits1(&s->gb); + for(k=0;k<2;k++) { + val = mpeg_decode_motion(s, s->mpeg_f_code[i][k], + s->last_mv[i][j][k]); + s->last_mv[i][j][k] = val; + s->mv[i][j][k] = val; + } + } + } + break; + case MT_FIELD: + s->mv_type = MV_TYPE_FIELD; + if (s->picture_structure == PICT_FRAME) { + mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; + for(j=0;j<2;j++) { + s->field_select[i][j] = get_bits1(&s->gb); + val = mpeg_decode_motion(s, s->mpeg_f_code[i][0], + s->last_mv[i][j][0]); + s->last_mv[i][j][0] = val; + s->mv[i][j][0] = val; + dprintf("fmx=%d\n", val); + val = mpeg_decode_motion(s, s->mpeg_f_code[i][1], + s->last_mv[i][j][1] >> 1); + s->last_mv[i][j][1] = val << 1; + s->mv[i][j][1] = val; + dprintf("fmy=%d\n", val); + } + } else { + mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; + s->field_select[i][0] = get_bits1(&s->gb); + for(k=0;k<2;k++) { + val = mpeg_decode_motion(s, s->mpeg_f_code[i][k], + s->last_mv[i][0][k]); + s->last_mv[i][0][k] = val; + s->last_mv[i][1][k] = val; + s->mv[i][0][k] = val; + } + } + break; + case MT_DMV: + { + int dmx, dmy, mx, my, m; + + mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0], + s->last_mv[i][0][0]); + s->last_mv[i][0][0] = mx; + s->last_mv[i][1][0] = mx; + dmx = get_dmv(s); + my = mpeg_decode_motion(s, s->mpeg_f_code[i][1], + s->last_mv[i][0][1] >> 1); + dmy = get_dmv(s); + s->mv_type = MV_TYPE_DMV; + + + s->last_mv[i][0][1] = my<<1; + s->last_mv[i][1][1] = my<<1; + + s->mv[i][0][0] = mx; + s->mv[i][0][1] = my; + s->mv[i][1][0] = mx;//not used + s->mv[i][1][1] = my;//not used + + if (s->picture_structure == PICT_FRAME) { + mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; + + //m = 1 + 2 * s->top_field_first; + m = s->top_field_first ? 1 : 3; + + /* top -> top pred */ + s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx; + s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1; + m = 4 - m; + s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx; + s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1; + } else { + mb_type |= MB_TYPE_16x16; + + s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx; + s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy; + if(s->picture_structure == PICT_TOP_FIELD) + s->mv[i][2][1]--; + else + s->mv[i][2][1]++; + } + } + break; + default: + av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y); + return -1; + } + } + } + } + + s->mb_intra = 0; + if (HAS_CBP(mb_type)) { + s->dsp.clear_blocks(s->block[0]); + + if(!s->chroma_y_shift){ + s->dsp.clear_blocks(s->block[6]); + } + + cbp = get_vlc2(&s->gb, mb_pat_vlc.table, MB_PAT_VLC_BITS, 1); + if (cbp < 0 || ((cbp == 0) && (s->chroma_format < 2)) ){ + av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y); + return -1; + } + if(mb_block_count > 6){ + cbp<<= mb_block_count-6; + cbp |= get_bits(&s->gb, mb_block_count-6); + } + +#ifdef HAVE_XVMC + //on 1 we memcpy blocks in xvmcvideo + if(s->avctx->xvmc_acceleration > 1){ + XVMC_pack_pblocks(s,cbp); + if(s->swap_uv){ + exchange_uv(s); + } + } +#endif + + if (s->codec_id == CODEC_ID_MPEG2VIDEO) { + if(s->flags2 & CODEC_FLAG2_FAST){ + for(i=0;i<6;i++) { + if(cbp & 32) { + mpeg2_fast_decode_block_non_intra(s, s->pblocks[i], i); + } else { + s->block_last_index[i] = -1; + } + cbp+=cbp; + } + }else{ + cbp<<= 12-mb_block_count; + + for(i=0;i<mb_block_count;i++) { + if ( cbp & (1<<11) ) { + if (mpeg2_decode_block_non_intra(s, s->pblocks[i], i) < 0) + return -1; + } else { + s->block_last_index[i] = -1; + } + cbp+=cbp; + } + } + } else { + if(s->flags2 & CODEC_FLAG2_FAST){ + for(i=0;i<6;i++) { + if (cbp & 32) { + mpeg1_fast_decode_block_inter(s, s->pblocks[i], i); + } else { + s->block_last_index[i] = -1; + } + cbp+=cbp; + } + }else{ + for(i=0;i<6;i++) { + if (cbp & 32) { + if (mpeg1_decode_block_inter(s, s->pblocks[i], i) < 0) + return -1; + } else { + s->block_last_index[i] = -1; + } + cbp+=cbp; + } + } + } + }else{ + for(i=0;i<6;i++) + s->block_last_index[i] = -1; + } + } + + s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]= mb_type; + + return 0; +} + +/* as h263, but only 17 codes */ +static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred) +{ + int code, sign, val, l, shift; + + code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2); + if (code == 0) { + return pred; + } + if (code < 0) { + return 0xffff; + } + + sign = get_bits1(&s->gb); + shift = fcode - 1; + val = code; + if (shift) { + val = (val - 1) << shift; + val |= get_bits(&s->gb, shift); + val++; + } + if (sign) + val = -val; + val += pred; + + /* modulo decoding */ + l= INT_BIT - 5 - shift; + val = (val<<l)>>l; + return val; +} + typedef struct Mpeg1Context { MpegEncContext mpeg_enc_ctx; int mpeg_enc_ctx_allocated; /* true if decoding context allocated */ diff --git a/src/libffmpeg/libavcodec/mpegvideo.h b/src/libffmpeg/libavcodec/mpegvideo.h index df67a469c..f5db85952 100644 --- a/src/libffmpeg/libavcodec/mpegvideo.h +++ b/src/libffmpeg/libavcodec/mpegvideo.h @@ -810,10 +810,10 @@ void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_ int16_t (*mv_table)[2], int f_code, int type, int truncate); void ff_init_me(MpegEncContext *s); int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y); -inline int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr, +extern __inline__ int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr, int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2], int ref_mv_scale, int size, int h); -int inline ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index, +extern __inline__ int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index, int ref_index, int size, int h, int add_rate); /* mpeg12.c */ diff --git a/src/libffmpeg/libavcodec/msmpeg4.c b/src/libffmpeg/libavcodec/msmpeg4.c index 643ed33c6..3ac3e0df4 100644 --- a/src/libffmpeg/libavcodec/msmpeg4.c +++ b/src/libffmpeg/libavcodec/msmpeg4.c @@ -59,9 +59,7 @@ static uint32_t v2_dc_lum_table[512][2]; static uint32_t v2_dc_chroma_table[512][2]; -static inline void msmpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n); -static inline int msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, - int n, int coded, const uint8_t *scantable); +static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr); static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr); static int msmpeg4_decode_motion(MpegEncContext * s, int *mx_ptr, int *my_ptr); @@ -536,6 +534,129 @@ static inline void handle_slices(MpegEncContext *s){ } } +/* Encoding of a block. Very similar to MPEG4 except for a different + escape coding (same as H263) and more vlc tables. + */ +static inline void msmpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n) +{ + int level, run, last, i, j, last_index; + int last_non_zero, sign, slevel; + int code, run_diff, dc_pred_dir; + const RLTable *rl; + const uint8_t *scantable; + + if (s->mb_intra) { + set_stat(ST_DC); + msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir); + i = 1; + if (n < 4) { + rl = &rl_table[s->rl_table_index]; + } else { + rl = &rl_table[3 + s->rl_chroma_table_index]; + } + run_diff = 0; + scantable= s->intra_scantable.permutated; + set_stat(ST_INTRA_AC); + } else { + i = 0; + rl = &rl_table[3 + s->rl_table_index]; + if(s->msmpeg4_version<=2) + run_diff = 0; + else + run_diff = 1; + scantable= s->inter_scantable.permutated; + set_stat(ST_INTER_AC); + } + + /* recalculate block_last_index for M$ wmv1 */ + if(s->msmpeg4_version>=4 && s->block_last_index[n]>0){ + for(last_index=63; last_index>=0; last_index--){ + if(block[scantable[last_index]]) break; + } + s->block_last_index[n]= last_index; + }else + last_index = s->block_last_index[n]; + /* AC coefs */ + last_non_zero = i - 1; + for (; i <= last_index; i++) { + j = scantable[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; + } + + if(level<=MAX_LEVEL && run<=MAX_RUN){ + s->ac_stats[s->mb_intra][n>3][level][run][last]++; + } +#if 0 +else + s->ac_stats[s->mb_intra][n>3][40][63][0]++; //esc3 like +#endif + 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) { + 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(&s->pb, 1, 0); + if (level > MAX_LEVEL) + goto esc3; + run1 = run - rl->max_run[last][level] - run_diff; + if (run1 < 0) + goto esc3; + code = get_rl_index(rl, last, run1, level); + if (code == rl->n) { + esc3: + /* third escape */ + put_bits(&s->pb, 1, 0); + put_bits(&s->pb, 1, last); + if(s->msmpeg4_version>=4){ + if(s->esc3_level_length==0){ + s->esc3_level_length=8; + s->esc3_run_length= 6; + if(s->qscale<8) + put_bits(&s->pb, 6, 3); + else + put_bits(&s->pb, 8, 3); + } + put_bits(&s->pb, s->esc3_run_length, run); + put_bits(&s->pb, 1, sign); + put_bits(&s->pb, s->esc3_level_length, level); + }else{ + put_bits(&s->pb, 6, run); + put_bits(&s->pb, 8, slevel & 0xff); + } + } else { + /* second escape */ + put_bits(&s->pb, 1, 1); + put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); + put_bits(&s->pb, 1, sign); + } + } else { + /* first escape */ + put_bits(&s->pb, 1, 1); + put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); + put_bits(&s->pb, 1, sign); + } + } else { + put_bits(&s->pb, 1, sign); + } + last_non_zero = i; + } + } +} + void msmpeg4_encode_mb(MpegEncContext * s, DCTELEM block[6][64], int motion_x, int motion_y) @@ -915,129 +1036,6 @@ static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr } } -/* Encoding of a block. Very similar to MPEG4 except for a different - escape coding (same as H263) and more vlc tables. - */ -static inline void msmpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n) -{ - int level, run, last, i, j, last_index; - int last_non_zero, sign, slevel; - int code, run_diff, dc_pred_dir; - const RLTable *rl; - const uint8_t *scantable; - - if (s->mb_intra) { - set_stat(ST_DC); - msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir); - i = 1; - if (n < 4) { - rl = &rl_table[s->rl_table_index]; - } else { - rl = &rl_table[3 + s->rl_chroma_table_index]; - } - run_diff = 0; - scantable= s->intra_scantable.permutated; - set_stat(ST_INTRA_AC); - } else { - i = 0; - rl = &rl_table[3 + s->rl_table_index]; - if(s->msmpeg4_version<=2) - run_diff = 0; - else - run_diff = 1; - scantable= s->inter_scantable.permutated; - set_stat(ST_INTER_AC); - } - - /* recalculate block_last_index for M$ wmv1 */ - if(s->msmpeg4_version>=4 && s->block_last_index[n]>0){ - for(last_index=63; last_index>=0; last_index--){ - if(block[scantable[last_index]]) break; - } - s->block_last_index[n]= last_index; - }else - last_index = s->block_last_index[n]; - /* AC coefs */ - last_non_zero = i - 1; - for (; i <= last_index; i++) { - j = scantable[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; - } - - if(level<=MAX_LEVEL && run<=MAX_RUN){ - s->ac_stats[s->mb_intra][n>3][level][run][last]++; - } -#if 0 -else - s->ac_stats[s->mb_intra][n>3][40][63][0]++; //esc3 like -#endif - 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) { - 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(&s->pb, 1, 0); - if (level > MAX_LEVEL) - goto esc3; - run1 = run - rl->max_run[last][level] - run_diff; - if (run1 < 0) - goto esc3; - code = get_rl_index(rl, last, run1, level); - if (code == rl->n) { - esc3: - /* third escape */ - put_bits(&s->pb, 1, 0); - put_bits(&s->pb, 1, last); - if(s->msmpeg4_version>=4){ - if(s->esc3_level_length==0){ - s->esc3_level_length=8; - s->esc3_run_length= 6; - if(s->qscale<8) - put_bits(&s->pb, 6, 3); - else - put_bits(&s->pb, 8, 3); - } - put_bits(&s->pb, s->esc3_run_length, run); - put_bits(&s->pb, 1, sign); - put_bits(&s->pb, s->esc3_level_length, level); - }else{ - put_bits(&s->pb, 6, run); - put_bits(&s->pb, 8, slevel & 0xff); - } - } else { - /* second escape */ - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); - put_bits(&s->pb, 1, sign); - } - } else { - /* first escape */ - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); - put_bits(&s->pb, 1, sign); - } - } else { - put_bits(&s->pb, 1, sign); - } - last_non_zero = i; - } - } -} - /****************************************/ /* decoding stuff */ @@ -1482,185 +1480,6 @@ static int msmpeg4v2_decode_motion(MpegEncContext * s, int pred, int f_code) return val; } -static int msmpeg4v12_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) -{ - int cbp, code, i; - - if (s->pict_type == P_TYPE) { - if (s->use_skip_mb_code) { - if (get_bits1(&s->gb)) { - /* skip mb */ - s->mb_intra = 0; - for(i=0;i<6;i++) - s->block_last_index[i] = -1; - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - s->mv[0][0][0] = 0; - s->mv[0][0][1] = 0; - s->mb_skipped = 1; - return 0; - } - } - - if(s->msmpeg4_version==2) - code = get_vlc2(&s->gb, v2_mb_type_vlc.table, V2_MB_TYPE_VLC_BITS, 1); - else - code = get_vlc2(&s->gb, v1_inter_cbpc_vlc.table, V1_INTER_CBPC_VLC_BITS, 3); - if(code<0 || code>7){ - av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", code, s->mb_x, s->mb_y); - return -1; - } - - s->mb_intra = code >>2; - - cbp = code & 0x3; - } else { - s->mb_intra = 1; - if(s->msmpeg4_version==2) - cbp= get_vlc2(&s->gb, v2_intra_cbpc_vlc.table, V2_INTRA_CBPC_VLC_BITS, 1); - else - cbp= get_vlc2(&s->gb, v1_intra_cbpc_vlc.table, V1_INTRA_CBPC_VLC_BITS, 1); - if(cbp<0 || cbp>3){ - av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y); - return -1; - } - } - - if (!s->mb_intra) { - int mx, my, cbpy; - - cbpy= get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1); - if(cbpy<0){ - av_log(s->avctx, AV_LOG_ERROR, "cbpy %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y); - return -1; - } - - cbp|= cbpy<<2; - if(s->msmpeg4_version==1 || (cbp&3) != 3) cbp^= 0x3C; - - h263_pred_motion(s, 0, 0, &mx, &my); - mx= msmpeg4v2_decode_motion(s, mx, 1); - my= msmpeg4v2_decode_motion(s, my, 1); - - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - s->mv[0][0][0] = mx; - s->mv[0][0][1] = my; - } else { - if(s->msmpeg4_version==2){ - s->ac_pred = get_bits1(&s->gb); - cbp|= get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors - } else{ - s->ac_pred = 0; - cbp|= get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors - if(s->pict_type==P_TYPE) cbp^=0x3C; - } - } - - s->dsp.clear_blocks(s->block[0]); - for (i = 0; i < 6; i++) { - if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) - { - av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i); - return -1; - } - } - return 0; -} - -static int msmpeg4v34_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) -{ - int cbp, code, i; - uint8_t *coded_val; - uint32_t * const mb_type_ptr= &s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]; - - if (s->pict_type == P_TYPE) { - set_stat(ST_INTER_MB); - if (s->use_skip_mb_code) { - if (get_bits1(&s->gb)) { - /* skip mb */ - s->mb_intra = 0; - for(i=0;i<6;i++) - s->block_last_index[i] = -1; - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - s->mv[0][0][0] = 0; - s->mv[0][0][1] = 0; - s->mb_skipped = 1; - *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; - - return 0; - } - } - - code = get_vlc2(&s->gb, mb_non_intra_vlc[DEFAULT_INTER_INDEX].table, MB_NON_INTRA_VLC_BITS, 3); - if (code < 0) - return -1; - //s->mb_intra = (code & 0x40) ? 0 : 1; - s->mb_intra = (~code & 0x40) >> 6; - - cbp = code & 0x3f; - } else { - set_stat(ST_INTRA_MB); - s->mb_intra = 1; - code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); - if (code < 0) - return -1; - /* predict coded block pattern */ - cbp = 0; - for(i=0;i<6;i++) { - int val = ((code >> (5 - i)) & 1); - if (i < 4) { - int pred = coded_block_pred(s, i, &coded_val); - val = val ^ pred; - *coded_val = val; - } - cbp |= val << (5 - i); - } - } - - if (!s->mb_intra) { - int mx, my; -//printf("P at %d %d\n", s->mb_x, s->mb_y); - if(s->per_mb_rl_table && cbp){ - s->rl_table_index = decode012(&s->gb); - s->rl_chroma_table_index = s->rl_table_index; - } - set_stat(ST_MV); - h263_pred_motion(s, 0, 0, &mx, &my); - if (msmpeg4_decode_motion(s, &mx, &my) < 0) - return -1; - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - s->mv[0][0][0] = mx; - s->mv[0][0][1] = my; - *mb_type_ptr = MB_TYPE_L0 | MB_TYPE_16x16; - } else { -//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24)); - set_stat(ST_INTRA_MB); - s->ac_pred = get_bits1(&s->gb); - *mb_type_ptr = MB_TYPE_INTRA; - if(s->inter_intra_pred){ - s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1); -// printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y); - } - if(s->per_mb_rl_table && cbp){ - s->rl_table_index = decode012(&s->gb); - s->rl_chroma_table_index = s->rl_table_index; - } - } - - s->dsp.clear_blocks(s->block[0]); - for (i = 0; i < 6; i++) { - if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) - { - av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i); - return -1; - } - } - - return 0; -} //#define ERROR_DETAILS static inline int msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, int n, int coded, const uint8_t *scan_table) @@ -1912,6 +1731,186 @@ static inline int msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, return 0; } +static int msmpeg4v12_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) +{ + int cbp, code, i; + + if (s->pict_type == P_TYPE) { + if (s->use_skip_mb_code) { + if (get_bits1(&s->gb)) { + /* skip mb */ + s->mb_intra = 0; + for(i=0;i<6;i++) + s->block_last_index[i] = -1; + s->mv_dir = MV_DIR_FORWARD; + s->mv_type = MV_TYPE_16X16; + s->mv[0][0][0] = 0; + s->mv[0][0][1] = 0; + s->mb_skipped = 1; + return 0; + } + } + + if(s->msmpeg4_version==2) + code = get_vlc2(&s->gb, v2_mb_type_vlc.table, V2_MB_TYPE_VLC_BITS, 1); + else + code = get_vlc2(&s->gb, v1_inter_cbpc_vlc.table, V1_INTER_CBPC_VLC_BITS, 3); + if(code<0 || code>7){ + av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", code, s->mb_x, s->mb_y); + return -1; + } + + s->mb_intra = code >>2; + + cbp = code & 0x3; + } else { + s->mb_intra = 1; + if(s->msmpeg4_version==2) + cbp= get_vlc2(&s->gb, v2_intra_cbpc_vlc.table, V2_INTRA_CBPC_VLC_BITS, 1); + else + cbp= get_vlc2(&s->gb, v1_intra_cbpc_vlc.table, V1_INTRA_CBPC_VLC_BITS, 1); + if(cbp<0 || cbp>3){ + av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y); + return -1; + } + } + + if (!s->mb_intra) { + int mx, my, cbpy; + + cbpy= get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1); + if(cbpy<0){ + av_log(s->avctx, AV_LOG_ERROR, "cbpy %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y); + return -1; + } + + cbp|= cbpy<<2; + if(s->msmpeg4_version==1 || (cbp&3) != 3) cbp^= 0x3C; + + h263_pred_motion(s, 0, 0, &mx, &my); + mx= msmpeg4v2_decode_motion(s, mx, 1); + my= msmpeg4v2_decode_motion(s, my, 1); + + s->mv_dir = MV_DIR_FORWARD; + s->mv_type = MV_TYPE_16X16; + s->mv[0][0][0] = mx; + s->mv[0][0][1] = my; + } else { + if(s->msmpeg4_version==2){ + s->ac_pred = get_bits1(&s->gb); + cbp|= get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors + } else{ + s->ac_pred = 0; + cbp|= get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors + if(s->pict_type==P_TYPE) cbp^=0x3C; + } + } + + s->dsp.clear_blocks(s->block[0]); + for (i = 0; i < 6; i++) { + if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) + { + av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i); + return -1; + } + } + return 0; +} + +static int msmpeg4v34_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) +{ + int cbp, code, i; + uint8_t *coded_val; + uint32_t * const mb_type_ptr= &s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]; + + if (s->pict_type == P_TYPE) { + set_stat(ST_INTER_MB); + if (s->use_skip_mb_code) { + if (get_bits1(&s->gb)) { + /* skip mb */ + s->mb_intra = 0; + for(i=0;i<6;i++) + s->block_last_index[i] = -1; + s->mv_dir = MV_DIR_FORWARD; + s->mv_type = MV_TYPE_16X16; + s->mv[0][0][0] = 0; + s->mv[0][0][1] = 0; + s->mb_skipped = 1; + *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; + + return 0; + } + } + + code = get_vlc2(&s->gb, mb_non_intra_vlc[DEFAULT_INTER_INDEX].table, MB_NON_INTRA_VLC_BITS, 3); + if (code < 0) + return -1; + //s->mb_intra = (code & 0x40) ? 0 : 1; + s->mb_intra = (~code & 0x40) >> 6; + + cbp = code & 0x3f; + } else { + set_stat(ST_INTRA_MB); + s->mb_intra = 1; + code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); + if (code < 0) + return -1; + /* predict coded block pattern */ + cbp = 0; + for(i=0;i<6;i++) { + int val = ((code >> (5 - i)) & 1); + if (i < 4) { + int pred = coded_block_pred(s, i, &coded_val); + val = val ^ pred; + *coded_val = val; + } + cbp |= val << (5 - i); + } + } + + if (!s->mb_intra) { + int mx, my; +//printf("P at %d %d\n", s->mb_x, s->mb_y); + if(s->per_mb_rl_table && cbp){ + s->rl_table_index = decode012(&s->gb); + s->rl_chroma_table_index = s->rl_table_index; + } + set_stat(ST_MV); + h263_pred_motion(s, 0, 0, &mx, &my); + if (msmpeg4_decode_motion(s, &mx, &my) < 0) + return -1; + s->mv_dir = MV_DIR_FORWARD; + s->mv_type = MV_TYPE_16X16; + s->mv[0][0][0] = mx; + s->mv[0][0][1] = my; + *mb_type_ptr = MB_TYPE_L0 | MB_TYPE_16x16; + } else { +//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24)); + set_stat(ST_INTRA_MB); + s->ac_pred = get_bits1(&s->gb); + *mb_type_ptr = MB_TYPE_INTRA; + if(s->inter_intra_pred){ + s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1); +// printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y); + } + if(s->per_mb_rl_table && cbp){ + s->rl_table_index = decode012(&s->gb); + s->rl_chroma_table_index = s->rl_table_index; + } + } + + s->dsp.clear_blocks(s->block[0]); + for (i = 0; i < 6; i++) { + if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) + { + av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i); + return -1; + } + } + + return 0; +} + static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr) { int level, pred; |