diff options
Diffstat (limited to 'src/libffmpeg/libavcodec/msmpeg4.c')
| -rw-r--r-- | src/libffmpeg/libavcodec/msmpeg4.c | 628 |
1 files changed, 313 insertions, 315 deletions
diff --git a/src/libffmpeg/libavcodec/msmpeg4.c b/src/libffmpeg/libavcodec/msmpeg4.c index 3ac3e0df4..81f147918 100644 --- a/src/libffmpeg/libavcodec/msmpeg4.c +++ b/src/libffmpeg/libavcodec/msmpeg4.c @@ -59,7 +59,9 @@ static uint32_t v2_dc_lum_table[512][2]; static uint32_t v2_dc_chroma_table[512][2]; -static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr); +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 int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr); static int msmpeg4_decode_motion(MpegEncContext * s, int *mx_ptr, int *my_ptr); @@ -177,11 +179,8 @@ static void common_init(MpegEncContext * s) break; #if defined(CONFIG_WMV3_DECODER)||defined(CONFIG_VC9_DECODER) case 6: -/* xine: comment this out as WMV3 support is incomplete */ -#if 0 s->y_dc_scale_table= wmv3_dc_scale_table; s->c_dc_scale_table= wmv3_dc_scale_table; -#endif /* #if 0 */ break; #endif @@ -534,129 +533,6 @@ 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) @@ -1036,6 +912,129 @@ 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 */ @@ -1480,6 +1479,185 @@ 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) @@ -1643,9 +1821,9 @@ static inline int msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, if(last) i+=192; #ifdef ERROR_DETAILS if(run==66) - fprintf(stderr, "illegal vlc code in ESC3 level=%d\n", level); + av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code in ESC3 level=%d\n", level); else if((i>62 && i<192) || i>192+63) - fprintf(stderr, "run overflow in ESC3 i=%d run=%d level=%d\n", i, run, level); + av_log(s->avctx, AV_LOG_ERROR, "run overflow in ESC3 i=%d run=%d level=%d\n", i, run, level); #endif } else { /* second escape */ @@ -1661,9 +1839,9 @@ static inline int msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, LAST_SKIP_BITS(re, &s->gb, 1); #ifdef ERROR_DETAILS if(run==66) - fprintf(stderr, "illegal vlc code in ESC2 level=%d\n", level); + av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code in ESC2 level=%d\n", level); else if((i>62 && i<192) || i>192+63) - fprintf(stderr, "run overflow in ESC2 i=%d run=%d level=%d\n", i, run, level); + av_log(s->avctx, AV_LOG_ERROR, "run overflow in ESC2 i=%d run=%d level=%d\n", i, run, level); #endif } } else { @@ -1681,9 +1859,9 @@ static inline int msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, LAST_SKIP_BITS(re, &s->gb, 1); #ifdef ERROR_DETAILS if(run==66) - fprintf(stderr, "illegal vlc code in ESC1 level=%d\n", level); + av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code in ESC1 level=%d\n", level); else if((i>62 && i<192) || i>192+63) - fprintf(stderr, "run overflow in ESC1 i=%d run=%d level=%d\n", i, run, level); + av_log(s->avctx, AV_LOG_ERROR, "run overflow in ESC1 i=%d run=%d level=%d\n", i, run, level); #endif } } else { @@ -1692,9 +1870,9 @@ static inline int msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, LAST_SKIP_BITS(re, &s->gb, 1); #ifdef ERROR_DETAILS if(run==66) - fprintf(stderr, "illegal vlc code level=%d\n", level); + av_log(s->avctx, AV_LOG_ERROR, "illegal vlc code level=%d\n", level); else if((i>62 && i<192) || i>192+63) - fprintf(stderr, "run overflow i=%d run=%d level=%d\n", i, run, level); + av_log(s->avctx, AV_LOG_ERROR, "run overflow i=%d run=%d level=%d\n", i, run, level); #endif } if (i > 62){ @@ -1731,186 +1909,6 @@ 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; |