diff options
author | Diego Biurrun <diego@biurrun.de> | 2009-12-30 17:15:12 +0300 |
---|---|---|
committer | Diego Biurrun <diego@biurrun.de> | 2009-12-30 17:15:12 +0300 |
commit | 8380edd947793740d8a17969c8bd7b797a7e256f (patch) | |
tree | adff96edaa1fcb6102eee38e413d9aa1845761b2 /libavcodec/msmpeg4.c | |
parent | 941870cd35000fde07a261a7f913942b3592c7c0 (diff) |
cosmetics: Reorder functions to avoid forward declarations.
Originally committed as revision 20977 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/msmpeg4.c')
-rw-r--r-- | libavcodec/msmpeg4.c | 722 |
1 files changed, 356 insertions, 366 deletions
diff --git a/libavcodec/msmpeg4.c b/libavcodec/msmpeg4.c index 945efc5503..ec82c03008 100644 --- a/libavcodec/msmpeg4.c +++ b/libavcodec/msmpeg4.c @@ -60,15 +60,6 @@ static uint32_t v2_dc_lum_table[512][2]; static uint32_t v2_dc_chroma_table[512][2]; -static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr); -static void init_h263_dc_for_msmpeg4(void); -#if CONFIG_ENCODERS -static void msmpeg4v2_encode_motion(MpegEncContext * s, int val); -static int get_size_of_code(MpegEncContext * s, RLTable *rl, int last, int run, int level, int intra); -#endif //CONFIG_ENCODERS -static int msmpeg4v12_decode_mb(MpegEncContext *s, DCTELEM block[6][64]); -static int msmpeg4v34_decode_mb(MpegEncContext *s, DCTELEM block[6][64]); - /* vc1 externs */ extern const uint8_t wmv3_dc_scale_table[32]; @@ -84,6 +75,62 @@ static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2]; static uint8_t static_rl_table_store[NB_RL_TABLES][2][2*MAX_RUN + MAX_LEVEL + 3]; +/* This table is practically identical to the one from h263 + * except that it is inverted. */ +static av_cold void init_h263_dc_for_msmpeg4(void) +{ + int level, uni_code, uni_len; + + for(level=-256; level<256; level++){ + int size, v, l; + /* find number of bits */ + size = 0; + v = abs(level); + while (v) { + v >>= 1; + size++; + } + + if (level < 0) + l= (-level) ^ ((1 << size) - 1); + else + l= level; + + /* luminance h263 */ + uni_code= DCtab_lum[size][0]; + uni_len = DCtab_lum[size][1]; + uni_code ^= (1<<uni_len)-1; //M$ does not like compatibility + + if (size > 0) { + uni_code<<=size; uni_code|=l; + uni_len+=size; + if (size > 8){ + uni_code<<=1; uni_code|=1; + uni_len++; + } + } + v2_dc_lum_table[level+256][0]= uni_code; + v2_dc_lum_table[level+256][1]= uni_len; + + /* chrominance h263 */ + uni_code= DCtab_chrom[size][0]; + uni_len = DCtab_chrom[size][1]; + uni_code ^= (1<<uni_len)-1; //M$ does not like compatibility + + if (size > 0) { + uni_code<<=size; uni_code|=l; + uni_len+=size; + if (size > 8){ + uni_code<<=1; uni_code|=1; + uni_len++; + } + } + v2_dc_chroma_table[level+256][0]= uni_code; + v2_dc_chroma_table[level+256][1]= uni_len; + + } +} + static av_cold void common_init(MpegEncContext * s) { static int initialized=0; @@ -162,40 +209,6 @@ void ff_msmpeg4_code012(PutBitContext *pb, int n) } } -av_cold void ff_msmpeg4_encode_init(MpegEncContext *s) -{ - static int init_done=0; - int i; - - common_init(s); - if(s->msmpeg4_version>=4){ - s->min_qcoeff= -255; - s->max_qcoeff= 255; - } - - if (!init_done) { - /* init various encoding tables */ - init_done = 1; - init_mv_table(&mv_tables[0]); - init_mv_table(&mv_tables[1]); - for(i=0;i<NB_RL_TABLES;i++) - init_rl(&rl_table[i], static_rl_table_store[i]); - - for(i=0; i<NB_RL_TABLES; i++){ - int level; - for(level=0; level<=MAX_LEVEL; level++){ - int run; - for(run=0; run<=MAX_RUN; run++){ - int last; - for(last=0; last<2; last++){ - rl_length[i][level][run][last]= get_size_of_code(s, &rl_table[ i], last, run, level, 0); - } - } - } - } - } -} - static int get_size_of_code(MpegEncContext * s, RLTable *rl, int last, int run, int level, int intra){ int size=0; int code; @@ -237,6 +250,40 @@ static int get_size_of_code(MpegEncContext * s, RLTable *rl, int last, int run, return size; } +av_cold void ff_msmpeg4_encode_init(MpegEncContext *s) +{ + static int init_done=0; + int i; + + common_init(s); + if(s->msmpeg4_version>=4){ + s->min_qcoeff= -255; + s->max_qcoeff= 255; + } + + if (!init_done) { + /* init various encoding tables */ + init_done = 1; + init_mv_table(&mv_tables[0]); + init_mv_table(&mv_tables[1]); + for(i=0;i<NB_RL_TABLES;i++) + init_rl(&rl_table[i], static_rl_table_store[i]); + + for(i=0; i<NB_RL_TABLES; i++){ + int level; + for(level=0; level<=MAX_LEVEL; level++){ + int run; + for(run=0; run<=MAX_RUN; run++){ + int last; + for(last=0; last<2; last++){ + rl_length[i][level][run][last]= get_size_of_code(s, &rl_table[ i], last, run, level, 0); + } + } + } + } + } +} + static void find_best_tables(MpegEncContext * s) { int i; @@ -458,6 +505,39 @@ void ff_msmpeg4_handle_slices(MpegEncContext *s){ } } +static void msmpeg4v2_encode_motion(MpegEncContext * s, int val) +{ + int range, bit_size, sign, code, bits; + + if (val == 0) { + /* zero vector */ + code = 0; + put_bits(&s->pb, mvtab[code][1], mvtab[code][0]); + } else { + bit_size = s->f_code - 1; + range = 1 << bit_size; + if (val <= -64) + val += 64; + else if (val >= 64) + val -= 64; + + if (val >= 0) { + sign = 0; + } else { + val = -val; + sign = 1; + } + val--; + code = (val >> bit_size) + 1; + bits = val & (range - 1); + + put_bits(&s->pb, mvtab[code][1] + 1, (mvtab[code][0] << 1) | sign); + if (bit_size > 0) { + put_bits(&s->pb, bit_size, bits); + } + } +} + void msmpeg4_encode_mb(MpegEncContext * s, DCTELEM block[6][64], int motion_x, int motion_y) @@ -987,60 +1067,212 @@ static VLC v1_intra_cbpc_vlc; static VLC v1_inter_cbpc_vlc; VLC ff_inter_intra_vlc; -/* This table is practically identical to the one from h263 - * except that it is inverted. */ -static av_cold void init_h263_dc_for_msmpeg4(void) +/* This is identical to h263 except that its range is multiplied by 2. */ +static int msmpeg4v2_decode_motion(MpegEncContext * s, int pred, int f_code) { - int level, uni_code, uni_len; + int code, val, sign, shift; - for(level=-256; level<256; level++){ - int size, v, l; - /* find number of bits */ - size = 0; - v = abs(level); - while (v) { - v >>= 1; - size++; + code = get_vlc2(&s->gb, v2_mv_vlc.table, V2_MV_VLC_BITS, 2); +// printf("MV code %d at %d %d pred: %d\n", code, s->mb_x,s->mb_y, pred); + if (code < 0) + return 0xffff; + + if (code == 0) + return pred; + sign = get_bits1(&s->gb); + shift = f_code - 1; + val = code; + if (shift) { + val = (val - 1) << shift; + val |= get_bits(&s->gb, shift); + val++; + } + if (sign) + val = -val; + + val += pred; + if (val <= -64) + val += 64; + else if (val >= 64) + val -= 64; + + return val; +} + +static int msmpeg4v12_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) +{ + int cbp, code, i; + + if (s->pict_type == FF_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 (level < 0) - l= (-level) ^ ((1 << size) - 1); - else - l= level; + 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; + } - /* luminance h263 */ - uni_code= DCtab_lum[size][0]; - uni_len = DCtab_lum[size][1]; - uni_code ^= (1<<uni_len)-1; //M$ does not like compatibility + s->mb_intra = code >>2; - if (size > 0) { - uni_code<<=size; uni_code|=l; - uni_len+=size; - if (size > 8){ - uni_code<<=1; uni_code|=1; - uni_len++; - } + 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==FF_P_TYPE) cbp^=0x3C; + } + } + + s->dsp.clear_blocks(s->block[0]); + for (i = 0; i < 6; i++) { + if (ff_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 == FF_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; + *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; + + return 0; } - v2_dc_lum_table[level+256][0]= uni_code; - v2_dc_lum_table[level+256][1]= uni_len; + } - /* chrominance h263 */ - uni_code= DCtab_chrom[size][0]; - uni_len = DCtab_chrom[size][1]; - uni_code ^= (1<<uni_len)-1; //M$ does not like compatibility + code = get_vlc2(&s->gb, ff_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; - if (size > 0) { - uni_code<<=size; uni_code|=l; - uni_len+=size; - if (size > 8){ - uni_code<<=1; uni_code|=1; - uni_len++; - } + cbp = code & 0x3f; + } else { + 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 = ff_msmpeg4_coded_block_pred(s, i, &coded_val); + val = val ^ pred; + *coded_val = val; } - v2_dc_chroma_table[level+256][0]= uni_code; - v2_dc_chroma_table[level+256][1]= uni_len; + 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; } + h263_pred_motion(s, 0, 0, &mx, &my); + if (ff_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)); + 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, ff_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 (ff_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; } /* init all vlc decoding tables */ @@ -1363,248 +1595,63 @@ static inline void msmpeg4_memsetw(short *tab, int val, int n) tab[i] = val; } -#if CONFIG_ENCODERS -static void msmpeg4v2_encode_motion(MpegEncContext * s, int val) +static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr) { - int range, bit_size, sign, code, bits; - - if (val == 0) { - /* zero vector */ - code = 0; - put_bits(&s->pb, mvtab[code][1], mvtab[code][0]); - } else { - bit_size = s->f_code - 1; - range = 1 << bit_size; - if (val <= -64) - val += 64; - else if (val >= 64) - val -= 64; + int level, pred; - if (val >= 0) { - sign = 0; + if(s->msmpeg4_version<=2){ + if (n < 4) { + level = get_vlc2(&s->gb, v2_dc_lum_vlc.table, DC_VLC_BITS, 3); } else { - val = -val; - sign = 1; - } - val--; - code = (val >> bit_size) + 1; - bits = val & (range - 1); - - put_bits(&s->pb, mvtab[code][1] + 1, (mvtab[code][0] << 1) | sign); - if (bit_size > 0) { - put_bits(&s->pb, bit_size, bits); - } - } -} -#endif - -/* This is identical to h263 except that its range is multiplied by 2. */ -static int msmpeg4v2_decode_motion(MpegEncContext * s, int pred, int f_code) -{ - int code, val, sign, shift; - - code = get_vlc2(&s->gb, v2_mv_vlc.table, V2_MV_VLC_BITS, 2); -// printf("MV code %d at %d %d pred: %d\n", code, s->mb_x,s->mb_y, pred); - if (code < 0) - return 0xffff; - - if (code == 0) - return pred; - sign = get_bits1(&s->gb); - shift = f_code - 1; - val = code; - if (shift) { - val = (val - 1) << shift; - val |= get_bits(&s->gb, shift); - val++; - } - if (sign) - val = -val; - - val += pred; - if (val <= -64) - val += 64; - else if (val >= 64) - val -= 64; - - return val; -} - -static int msmpeg4v12_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) -{ - int cbp, code, i; - - if (s->pict_type == FF_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; + level = get_vlc2(&s->gb, v2_dc_chroma_vlc.table, DC_VLC_BITS, 3); } - - 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); + if (level < 0) return -1; + level-=256; + }else{ //FIXME optimize use unified tables & index + if (n < 4) { + level = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); + } else { + level = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); } - } - - 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); + if (level < 0){ + av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n"); 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==FF_P_TYPE) cbp^=0x3C; - } - } - - s->dsp.clear_blocks(s->block[0]); - for (i = 0; i < 6; i++) { - if (ff_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; + if (level == DC_MAX) { + level = get_bits(&s->gb, 8); + if (get_bits1(&s->gb)) + level = -level; + } else if (level != 0) { + if (get_bits1(&s->gb)) + level = -level; } } - 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 == FF_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; - *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; - - return 0; - } - } - - code = get_vlc2(&s->gb, ff_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 { - 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 = ff_msmpeg4_coded_block_pred(s, i, &coded_val); - val = val ^ pred; - *coded_val = val; - } - cbp |= val << (5 - i); - } - } + if(s->msmpeg4_version==1){ + int32_t *dc_val; + pred = msmpeg4v1_pred_dc(s, n, &dc_val); + level += pred; - 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; - } - h263_pred_motion(s, 0, 0, &mx, &my); - if (ff_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)); - 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, ff_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; - } - } + /* update predictor */ + *dc_val= level; + }else{ + int16_t *dc_val; + pred = msmpeg4_pred_dc(s, n, &dc_val, dir_ptr); + level += pred; - s->dsp.clear_blocks(s->block[0]); - for (i = 0; i < 6; i++) { - if (ff_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; + /* update predictor */ + if (n < 4) { + *dc_val = level * s->y_dc_scale; + } else { + *dc_val = level * s->c_dc_scale; } } - return 0; + return level; } + //#define ERROR_DETAILS int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, int n, int coded, const uint8_t *scan_table) @@ -1853,63 +1900,6 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, return 0; } -static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr) -{ - int level, pred; - - if(s->msmpeg4_version<=2){ - if (n < 4) { - level = get_vlc2(&s->gb, v2_dc_lum_vlc.table, DC_VLC_BITS, 3); - } else { - level = get_vlc2(&s->gb, v2_dc_chroma_vlc.table, DC_VLC_BITS, 3); - } - if (level < 0) - return -1; - level-=256; - }else{ //FIXME optimize use unified tables & index - if (n < 4) { - level = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } else { - level = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } - if (level < 0){ - av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n"); - return -1; - } - - if (level == DC_MAX) { - level = get_bits(&s->gb, 8); - if (get_bits1(&s->gb)) - level = -level; - } else if (level != 0) { - if (get_bits1(&s->gb)) - level = -level; - } - } - - if(s->msmpeg4_version==1){ - int32_t *dc_val; - pred = msmpeg4v1_pred_dc(s, n, &dc_val); - level += pred; - - /* update predictor */ - *dc_val= level; - }else{ - int16_t *dc_val; - pred = msmpeg4_pred_dc(s, n, &dc_val, dir_ptr); - level += pred; - - /* update predictor */ - if (n < 4) { - *dc_val = level * s->y_dc_scale; - } else { - *dc_val = level * s->c_dc_scale; - } - } - - return level; -} - int ff_msmpeg4_decode_motion(MpegEncContext * s, int *mx_ptr, int *my_ptr) { |