--- trunk/xvidcore/src/bitstream/mbcoding.c 2002/06/09 23:30:50 194 +++ trunk/xvidcore/src/bitstream/mbcoding.c 2002/06/12 20:38:41 195 @@ -60,13 +60,14 @@ #define ABS(X) (((X)>0)?(X):-(X)) #define CLIP(X,A) (X > A) ? (A) : (X) -VLC intra_table[524032]; +VLC intra_table[524032]; VLC inter_table[524032]; VLC DCT3Dintra[4096]; VLC DCT3Dinter[4096]; -void init_vlc_tables(void) +void +init_vlc_tables(void) { int32_t k, l, i, intra, last; @@ -76,57 +77,55 @@ vlc1 = DCT3Dintra; vlc2 = DCT3Dinter; - + vlc[0] = intra_table; vlc[1] = inter_table; - + // generate encoding vlc lookup tables // the lookup table idea is taken from the excellent fame project by Vivien Chapellier - for(i = 0; i < 4; i++) { + for (i = 0; i < 4; i++) { intra = i % 2; last = i / 2; coeff_ptr = coeff_vlc[last + 2 * intra]; - - for(k = -2047; k < 2048; k++) { // level + + for (k = -2047; k < 2048; k++) { // level int8_t *max_level_ptr = max_level[last + 2 * intra]; int8_t *max_run_ptr = max_run[last + 2 * intra]; - - for(l = 0; l < 64; l++) { // run + + for (l = 0; l < 64; l++) { // run int32_t level = k; uint32_t run = l; - - if((abs(level) <= max_level_ptr[run]) && - (run <= (uint32_t)max_run_ptr[abs(level)])) { // level < max_level and run < max_run - - vlc[intra]->code = 0; - vlc[intra]->len = 0; - goto loop_end; - } - else { - if(level > 0) // correct level + + if ((abs(level) <= max_level_ptr[run]) && (run <= (uint32_t) max_run_ptr[abs(level)])) { // level < max_level and run < max_run + + vlc[intra]->code = 0; + vlc[intra]->len = 0; + goto loop_end; + } else { + if (level > 0) // correct level level -= max_level_ptr[run]; else level += max_level_ptr[run]; - if((abs(level) <= max_level_ptr[run]) && - (run <= (uint32_t) max_run_ptr[abs(level)])) { - + if ((abs(level) <= max_level_ptr[run]) && + (run <= (uint32_t) max_run_ptr[abs(level)])) { + vlc[intra]->code = 0x06; vlc[intra]->len = 8; goto loop_end; } - if(level > 0) // still here? - level += max_level_ptr[run]; // restore level + if (level > 0) // still here? + level += max_level_ptr[run]; // restore level else level -= max_level_ptr[run]; - run -= max_run_ptr[abs(level)] + 1; // and change run + run -= max_run_ptr[abs(level)] + 1; // and change run + + if ((abs(level) <= max_level_ptr[run]) && + (run <= (uint32_t) max_run_ptr[abs(level)])) { - if((abs(level) <= max_level_ptr[run]) && - (run <= (uint32_t) max_run_ptr[abs(level)])) { - vlc[intra]->code = 0x0e; vlc[intra]->len = 9; goto loop_end; @@ -134,20 +133,26 @@ run += max_run_ptr[abs(level)] + 1; } - vlc[intra]->code = (uint32_t) ((l << 14) | (0x1e + last) << 20) | - (1 << 13) | ((k & 0xfff) << 1) | 1; + vlc[intra]->code = + (uint32_t) ((l << 14) | (0x1e + last) << 20) | (1 << 13) | + ((k & 0xfff) << 1) | 1; vlc[intra]->len = 30; vlc[intra]++; continue; -loop_end: - if(level != 0) { - vlc[intra]->code = (vlc[intra]->code << (coeff_ptr[run][abs(level) - 1].len + 1)) | - (coeff_ptr[run][abs(level) - 1].code << 1); - vlc[intra]->len = (coeff_ptr[run][abs(level) - 1].len + 1) + vlc[intra]->len; + loop_end: + if (level != 0) { + vlc[intra]->code = + (vlc[intra]-> + code << (coeff_ptr[run][abs(level) - 1].len + + 1)) | (coeff_ptr[run][abs(level) - + 1].code << 1); + vlc[intra]->len = + (coeff_ptr[run][abs(level) - 1].len + 1) + + vlc[intra]->len; - if(level < 0) + if (level < 0) vlc[intra]->code += 1; } @@ -156,20 +161,17 @@ } } - for(i = 0; i < 4096; i++) { - if(i >= 512) { + for (i = 0; i < 4096; i++) { + if (i >= 512) { *vlc1 = DCT3Dtab3[(i >> 5) - 16]; *vlc2 = DCT3Dtab0[(i >> 5) - 16]; - } - else if(i >= 128) { + } else if (i >= 128) { *vlc1 = DCT3Dtab4[(i >> 2) - 32]; *vlc2 = DCT3Dtab1[(i >> 2) - 32]; - } - else if(i >= 8) { + } else if (i >= 8) { *vlc1 = DCT3Dtab5[i - 8]; *vlc2 = DCT3Dtab2[i - 8]; - } - else { + } else { *vlc1 = ERRtab[i]; *vlc2 = ERRtab[i]; } @@ -182,98 +184,105 @@ } -static __inline void CodeVector(Bitstream *bs, - int32_t value, - int32_t f_code, - Statistics *pStat) +static __inline void +CodeVector(Bitstream * bs, + int32_t value, + int32_t f_code, + Statistics * pStat) { const int scale_factor = 1 << (f_code - 1); const int cmp = scale_factor << 5; - if(value < (-1 * cmp)) + if (value < (-1 * cmp)) value += 64 * scale_factor; - - if(value > (cmp - 1)) + + if (value > (cmp - 1)) value -= 64 * scale_factor; pStat->iMvSum += value * value; pStat->iMvCount++; if (value == 0) { - BitstreamPutBits(bs, mb_motion_table[32].code, mb_motion_table[32].len); + BitstreamPutBits(bs, mb_motion_table[32].code, + mb_motion_table[32].len); } else { uint16_t length, code, mv_res, sign; - + length = 16 << f_code; f_code--; - + sign = (value < 0); - if(value >= length) + if (value >= length) value -= 2 * length; - else if(value < -length) + else if (value < -length) value += 2 * length; - if(sign) + if (sign) value = -value; value--; mv_res = value & ((1 << f_code) - 1); code = ((value - mv_res) >> f_code) + 1; - if(sign) + if (sign) code = -code; code += 32; - BitstreamPutBits(bs, mb_motion_table[code].code, mb_motion_table[code].len); - - if(f_code) + BitstreamPutBits(bs, mb_motion_table[code].code, + mb_motion_table[code].len); + + if (f_code) BitstreamPutBits(bs, mv_res, f_code); } } -static __inline void CodeCoeff(Bitstream *bs, - const int16_t qcoeff[64], - VLC *table, - const uint16_t *zigzag, - uint16_t intra) +static __inline void +CodeCoeff(Bitstream * bs, + const int16_t qcoeff[64], + VLC * table, + const uint16_t * zigzag, + uint16_t intra) { uint32_t j, last; short v; VLC *vlc; - + j = intra; last = intra; - while(j < 64 && (v = qcoeff[zigzag[j]]) == 0) j++; - + while (j < 64 && (v = qcoeff[zigzag[j]]) == 0) + j++; + do { vlc = table + 64 * 2047 + (v << 6) + j - last; last = ++j; // count zeroes - while(j < 64 && (v = qcoeff[zigzag[j]]) == 0) j++; - + while (j < 64 && (v = qcoeff[zigzag[j]]) == 0) + j++; + // write code - if(j != 64) { + if (j != 64) { BitstreamPutBits(bs, vlc->code, vlc->len); } else { vlc += 64 * 4095; BitstreamPutBits(bs, vlc->code, vlc->len); break; } - } while(1); + } while (1); } -static void CodeBlockIntra(const FRAMEINFO * frame, - const MACROBLOCK *pMB, - int16_t qcoeff[6*64], +static void +CodeBlockIntra(const FRAMEINFO * frame, + const MACROBLOCK * pMB, + int16_t qcoeff[6 * 64], Bitstream * bs, Statistics * pStat) { @@ -283,55 +292,47 @@ cbpy = pMB->cbp >> 2; // write mcbpc - if(frame->coding_type == I_VOP) { + if (frame->coding_type == I_VOP) { mcbpc = ((pMB->mode >> 1) & 3) | ((pMB->cbp & 3) << 2); - BitstreamPutBits(bs, mcbpc_intra_tab[mcbpc].code, mcbpc_intra_tab[mcbpc].len); - } - else { + BitstreamPutBits(bs, mcbpc_intra_tab[mcbpc].code, + mcbpc_intra_tab[mcbpc].len); + } else { mcbpc = (pMB->mode & 7) | ((pMB->cbp & 3) << 3); - BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, mcbpc_inter_tab[mcbpc].len); + BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, + mcbpc_inter_tab[mcbpc].len); } // ac prediction flag - if(pMB->acpred_directions[0]) + if (pMB->acpred_directions[0]) BitstreamPutBits(bs, 1, 1); else BitstreamPutBits(bs, 0, 1); // write cbpy - BitstreamPutBits (bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); + BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); // write dquant - if(pMB->mode == MODE_INTRA_Q) + if (pMB->mode == MODE_INTRA_Q) BitstreamPutBits(bs, pMB->dquant, 2); // write interlacing - if (frame->global_flags & XVID_INTERLACING) - { + if (frame->global_flags & XVID_INTERLACING) { BitstreamPutBit(bs, pMB->field_dct); } - // code block coeffs - for(i = 0; i < 6; i++) - { - if(i < 4) - BitstreamPutBits(bs, - dcy_tab[qcoeff[i*64 + 0] + 255].code, - dcy_tab[qcoeff[i*64 + 0] + 255].len); + for (i = 0; i < 6; i++) { + if (i < 4) + BitstreamPutBits(bs, dcy_tab[qcoeff[i * 64 + 0] + 255].code, + dcy_tab[qcoeff[i * 64 + 0] + 255].len); else - BitstreamPutBits(bs, - dcc_tab[qcoeff[i*64 + 0] + 255].code, - dcc_tab[qcoeff[i*64 + 0] + 255].len); - - if(pMB->cbp & (1 << (5 - i))) - { + BitstreamPutBits(bs, dcc_tab[qcoeff[i * 64 + 0] + 255].code, + dcc_tab[qcoeff[i * 64 + 0] + 255].len); + + if (pMB->cbp & (1 << (5 - i))) { bits = BitstreamPos(bs); - CodeCoeff(bs, - &qcoeff[i*64], - intra_table, - scan_tables[pMB->acpred_directions[i]], - 1); + CodeCoeff(bs, &qcoeff[i * 64], intra_table, + scan_tables[pMB->acpred_directions[i]], 1); bits = BitstreamPos(bs) - bits; pStat->iTextBits += bits; @@ -341,9 +342,10 @@ } -static void CodeBlockInter(const FRAMEINFO * frame, - const MACROBLOCK *pMB, - int16_t qcoeff[6*64], +static void +CodeBlockInter(const FRAMEINFO * frame, + const MACROBLOCK * pMB, + int16_t qcoeff[6 * 64], Bitstream * bs, Statistics * pStat) { @@ -355,49 +357,45 @@ cbpy = 15 - (pMB->cbp >> 2); // write mcbpc - BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, mcbpc_inter_tab[mcbpc].len); + BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, + mcbpc_inter_tab[mcbpc].len); // write cbpy BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); // write dquant - if(pMB->mode == MODE_INTER_Q) + if (pMB->mode == MODE_INTER_Q) BitstreamPutBits(bs, pMB->dquant, 2); - + // interlacing - if (frame->global_flags & XVID_INTERLACING) - { + if (frame->global_flags & XVID_INTERLACING) { BitstreamPutBit(bs, pMB->field_dct); DEBUG1("codep: field_dct: ", pMB->field_dct); // if inter block, write field ME flag - if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) - { + if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { BitstreamPutBit(bs, pMB->field_pred); DEBUG1("codep: field_pred: ", pMB->field_pred); // write field prediction references - if (pMB->field_pred) - { + if (pMB->field_pred) { BitstreamPutBit(bs, pMB->field_for_top); BitstreamPutBit(bs, pMB->field_for_bot); } } } - // code motion vector(s) - for(i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) - { + for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); } bits = BitstreamPos(bs); - + // code block coeffs - for(i = 0; i < 6; i++) - if(pMB->cbp & (1 << (5 - i))) - CodeCoeff(bs, &qcoeff[i*64], inter_table, scan_tables[0], 0); + for (i = 0; i < 6; i++) + if (pMB->cbp & (1 << (5 - i))) + CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_tables[0], 0); bits = BitstreamPos(bs) - bits; pStat->iTextBits += bits; @@ -405,27 +403,26 @@ } -void MBCoding(const FRAMEINFO * frame, - MACROBLOCK *pMB, - int16_t qcoeff[6*64], - Bitstream * bs, - Statistics * pStat) +void +MBCoding(const FRAMEINFO * frame, + MACROBLOCK * pMB, + int16_t qcoeff[6 * 64], + Bitstream * bs, + Statistics * pStat) { int intra = (pMB->mode == MODE_INTRA || pMB->mode == MODE_INTRA_Q); - if(frame->coding_type == P_VOP) { - if(pMB->cbp == 0 && pMB->mode == MODE_INTER && - pMB->mvs[0].x == 0 && pMB->mvs[0].y == 0) - { - BitstreamPutBit(bs, 1); // not_coded + if (frame->coding_type == P_VOP) { + if (pMB->cbp == 0 && pMB->mode == MODE_INTER && pMB->mvs[0].x == 0 && + pMB->mvs[0].y == 0) { + BitstreamPutBit(bs, 1); // not_coded return; - } - else - BitstreamPutBit(bs, 0); // coded + } else + BitstreamPutBit(bs, 0); // coded } - if(intra) + if (intra) CodeBlockIntra(frame, pMB, qcoeff, bs, pStat); else CodeBlockInter(frame, pMB, qcoeff, bs, pStat); @@ -444,32 +441,37 @@ 3 0001b forward mc+q dbquant, mvdf */ -void put_bvop_mbtype(Bitstream * bs, int value) -{ - switch(value) - { - case 0 : BitstreamPutBit(bs, 1); - return; - - case 1 : BitstreamPutBit(bs, 0); - BitstreamPutBit(bs, 1); - return; - - case 2 : BitstreamPutBit(bs, 0); - BitstreamPutBit(bs, 0); - BitstreamPutBit(bs, 1); - return; - - case 3 : BitstreamPutBit(bs, 0); - BitstreamPutBit(bs, 0); - BitstreamPutBit(bs, 0); - BitstreamPutBit(bs, 1); - return; +void +put_bvop_mbtype(Bitstream * bs, + int value) +{ + switch (value) { + case 0: + BitstreamPutBit(bs, 1); + return; + + case 1: + BitstreamPutBit(bs, 0); + BitstreamPutBit(bs, 1); + return; + + case 2: + BitstreamPutBit(bs, 0); + BitstreamPutBit(bs, 0); + BitstreamPutBit(bs, 1); + return; - default : ; // invalid! + case 3: + BitstreamPutBit(bs, 0); + BitstreamPutBit(bs, 0); + BitstreamPutBit(bs, 0); + BitstreamPutBit(bs, 1); + return; + + default:; // invalid! } - + } /* @@ -479,33 +481,38 @@ +2 11b */ -void put_bvop_dbquant(Bitstream *bs, int value) -{ - switch (value) - { - case 0 : BitstreamPutBit(bs, 0); - return; +void +put_bvop_dbquant(Bitstream * bs, + int value) +{ + switch (value) { + case 0: + BitstreamPutBit(bs, 0); + return; - case -2 : BitstreamPutBit(bs, 1); - BitstreamPutBit(bs, 0); - return; - - case 2 : BitstreamPutBit(bs, 1); - BitstreamPutBit(bs, 1); - return; + case -2: + BitstreamPutBit(bs, 1); + BitstreamPutBit(bs, 0); + return; + + case 2: + BitstreamPutBit(bs, 1); + BitstreamPutBit(bs, 1); + return; - default : ; // invalid + default:; // invalid } } -void MBCodingBVOP(const MACROBLOCK * mb, - const int16_t qcoeff[6*64], - const int32_t fcode, - const int32_t bcode, - Bitstream * bs, - Statistics * pStat) +void +MBCodingBVOP(const MACROBLOCK * mb, + const int16_t qcoeff[6 * 64], + const int32_t fcode, + const int32_t bcode, + Bitstream * bs, + Statistics * pStat) { int i; @@ -514,59 +521,48 @@ hence are interpolated from forward & backward frames ------------------------------------------------------------------ */ - if (mb->mode == 5) - { - BitstreamPutBit(bs, 1); // skipped + if (mb->mode == 5) { + BitstreamPutBit(bs, 1); // skipped return; } BitstreamPutBit(bs, 0); // not skipped - if (mb->cbp == 0) - { - BitstreamPutBit(bs, 1); // cbp == 0 - } - else - { - BitstreamPutBit(bs, 0); // cbp == xxx + if (mb->cbp == 0) { + BitstreamPutBit(bs, 1); // cbp == 0 + } else { + BitstreamPutBit(bs, 0); // cbp == xxx } put_bvop_mbtype(bs, mb->mode); - if (mb->cbp) - { + if (mb->cbp) { BitstreamPutBits(bs, mb->cbp, 6); } - if (mb->mode != MODE_DIRECT && mb->cbp != 0) - { - put_bvop_dbquant(bs, 0); // todo: mb->dquant = 0 + if (mb->mode != MODE_DIRECT && mb->cbp != 0) { + put_bvop_dbquant(bs, 0); // todo: mb->dquant = 0 } - if (mb->mode == MODE_INTERPOLATE || mb->mode == MODE_FORWARD) - { - CodeVector(bs, mb->pmvs[0].x, fcode, pStat); - CodeVector(bs, mb->pmvs[0].y, fcode, pStat); + if (mb->mode == MODE_INTERPOLATE || mb->mode == MODE_FORWARD) { + CodeVector(bs, mb->pmvs[0].x, fcode, pStat); + CodeVector(bs, mb->pmvs[0].y, fcode, pStat); } - if (mb->mode == MODE_INTERPOLATE || mb->mode == MODE_BACKWARD) - { - CodeVector(bs, mb->b_pmvs[0].x, bcode, pStat); - CodeVector(bs, mb->b_pmvs[0].y, bcode, pStat); + if (mb->mode == MODE_INTERPOLATE || mb->mode == MODE_BACKWARD) { + CodeVector(bs, mb->b_pmvs[0].x, bcode, pStat); + CodeVector(bs, mb->b_pmvs[0].y, bcode, pStat); } - if (mb->mode == MODE_DIRECT) - { + if (mb->mode == MODE_DIRECT) { // TODO: direct } - - for (i = 0; i < 6; i++) - { - if (mb->cbp & (1 << (5 - i))) - { - CodeCoeff(bs, &qcoeff[i*64], inter_table, scan_tables[0], 0); + + for (i = 0; i < 6; i++) { + if (mb->cbp & (1 << (5 - i))) { + CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_tables[0], 0); } - } + } } @@ -575,12 +571,13 @@ * decoding stuff starts here * ***************************************************************/ -int get_mcbpc_intra(Bitstream * bs) +int +get_mcbpc_intra(Bitstream * bs) { uint32_t index; - - while((index = BitstreamShowBits(bs, 9)) == 1) + + while ((index = BitstreamShowBits(bs, 9)) == 1) BitstreamSkip(bs, 9); index >>= 3; @@ -591,21 +588,24 @@ } -int get_mcbpc_inter(Bitstream * bs) +int +get_mcbpc_inter(Bitstream * bs) { uint32_t index; - - while((index = CLIP(BitstreamShowBits(bs, 9), 256)) == 1) + + while ((index = CLIP(BitstreamShowBits(bs, 9), 256)) == 1) BitstreamSkip(bs, 9); - BitstreamSkip(bs, mcbpc_inter_table[index].len); + BitstreamSkip(bs, mcbpc_inter_table[index].len); return mcbpc_inter_table[index].code; } -int get_cbpy(Bitstream * bs, int intra) +int +get_cbpy(Bitstream * bs, + int intra) { int cbpy; @@ -614,45 +614,46 @@ BitstreamSkip(bs, cbpy_table[index].len); cbpy = cbpy_table[index].code; - if(!intra) + if (!intra) cbpy = 15 - cbpy; return cbpy; } -int get_mv_data(Bitstream * bs) +int +get_mv_data(Bitstream * bs) { uint32_t index; - if(BitstreamGetBit(bs)) + if (BitstreamGetBit(bs)) return 0; - + index = BitstreamShowBits(bs, 12); - if(index >= 512) - { + if (index >= 512) { index = (index >> 8) - 2; BitstreamSkip(bs, TMNMVtab0[index].len); return TMNMVtab0[index].code; } - - if(index >= 128) - { + + if (index >= 128) { index = (index >> 2) - 32; BitstreamSkip(bs, TMNMVtab1[index].len); return TMNMVtab1[index].code; } - index -= 4; + index -= 4; BitstreamSkip(bs, TMNMVtab2[index].len); return TMNMVtab2[index].code; } -int get_mv(Bitstream * bs, int fcode) +int +get_mv(Bitstream * bs, + int fcode) { int data; @@ -661,38 +662,42 @@ int scale_fac = 1 << (fcode - 1); data = get_mv_data(bs); - - if(scale_fac == 1 || data == 0) + + if (scale_fac == 1 || data == 0) return data; res = BitstreamGetBits(bs, fcode - 1); mv = ((ABS(data) - 1) * scale_fac) + res + 1; - + return data < 0 ? -mv : mv; } -int get_dc_dif(Bitstream * bs, uint32_t dc_size) +int +get_dc_dif(Bitstream * bs, + uint32_t dc_size) { int code = BitstreamGetBits(bs, dc_size); int msb = code >> (dc_size - 1); - if(msb == 0) - return (-1 * (code^((1 << dc_size) - 1))); + if (msb == 0) + return (-1 * (code ^ ((1 << dc_size) - 1))); return code; } -int get_dc_size_lum(Bitstream * bs) +int +get_dc_size_lum(Bitstream * bs) { int code, i; + code = BitstreamShowBits(bs, 11); - for(i = 11; i > 3; i--) { - if(code == 1) { + for (i = 11; i > 3; i--) { + if (code == 1) { BitstreamSkip(bs, i); return i + 1; } @@ -705,14 +710,16 @@ } -int get_dc_size_chrom(Bitstream * bs) +int +get_dc_size_chrom(Bitstream * bs) { uint32_t code, i; + code = BitstreamShowBits(bs, 12); - for(i = 12; i > 2; i--) { - if(code == 1) { + for (i = 12; i > 2; i--) { + if (code == 1) { BitstreamSkip(bs, i); return i; } @@ -723,26 +730,27 @@ } -void get_intra_block(Bitstream * bs, int16_t * block, int direction, int coeff) +void +get_intra_block(Bitstream * bs, + int16_t * block, + int direction, + int coeff) { - const uint16_t * scan = scan_tables[ direction ]; + const uint16_t *scan = scan_tables[direction]; int level; int run; int last; - do - { + do { level = get_coeff(bs, &run, &last, 1, 0); - if (run == -1) - { + if (run == -1) { DEBUG("fatal: invalid run"); break; } coeff += run; - block[ scan[coeff] ] = level; - if (level < -127 || level > 127) - { + block[scan[coeff]] = level; + if (level < -127 || level > 127) { DEBUG1("warning: intra_overflow", level); } coeff++; @@ -750,29 +758,28 @@ } -void get_inter_block(Bitstream * bs, int16_t * block) +void +get_inter_block(Bitstream * bs, + int16_t * block) { - const uint16_t * scan = scan_tables[0]; + const uint16_t *scan = scan_tables[0]; int p; int level; int run; int last; p = 0; - do - { + do { level = get_coeff(bs, &run, &last, 0, 0); - if (run == -1) - { + if (run == -1) { DEBUG("fatal: invalid run"); break; } p += run; - block[ scan[p] ] = level; - if (level < -127 || level > 127) - { + block[scan[p]] = level; + if (level < -127 || level > 127) { DEBUG1("warning: inter_overflow", level); } p++;