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vlc-gpu
Commit ecc98c96 authored by Stéphane Borel's avatar Stéphane Borel
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Rajout de la quantification ,�limination de plusieurs warning,
plus decodage des blocks non intra.
parent dd545857
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Showing with 147 additions and 195 deletions
src/video_parser/vpar_blocks.c
View file @ ecc98c96
......@@ -215,11 +215,9 @@ dct_lookup_t pl_DCT_tab0[60] =
/* Table B-15, DCT coefficients table one,
* codes 000001xx ... 11111111
*/
#if 0
dct_lookup_t pl_DCT_tab0a[252] =
{
{DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6},
/* Escape */
{65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
{7,1,7}, {7,1,7}, {8,1,7}, {8,1,7},
{6,1,7}, {6,1,7}, {2,2,7}, {2,2,7},
{0,7,6}, {0,7,6}, {0,7,6}, {0,7,6},
......@@ -242,10 +240,10 @@ dct_lookup_t pl_DCT_tab0a[252] =
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{DCT_EOB,0,4}, {DCT_EOB,0,4}, {DCT_EOB,0,4}, {DCT_EOB,0,4}, /* EOB */
{DCT_EOB,0,4}, {DCT_EOB,0,4}, {DCT_EOB,0,4}, {DCT_EOB,0,4},
{DCT_EOB,0,4}, {DCT_EOB,0,4}, {DCT_EOB,0,4}, {DCT_EOB,0,4},
{DCT_EOB,0,4}, {DCT_EOB,0,4}, {DCT_EOB,0,4}, {DCT_EOB,0,4},
{64,0,4}, {64,0,4}, {64,0,4}, {64,0,4}, /* EOB */
{64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
{64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
{64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
{0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
{0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
{0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
......@@ -265,6 +263,7 @@ dct_lookup_t pl_DCT_tab0a[252] =
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
......@@ -282,74 +281,6 @@ dct_lookup_t pl_DCT_tab0a[252] =
{0,9,7}, {0,9,7}, {0,12,8}, {0,13,8},
{2,3,8}, {4,2,8}, {0,14,8}, {0,15,8}
};
#endif
dct_lookup_t pl_DCT_tab0a[252] =
{
{65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
{7,1,7}, {7,1,7}, {8,1,7}, {8,1,7},
{6,1,7}, {6,1,7}, {2,2,7}, {2,2,7},
{0,7,6}, {0,7,6}, {0,7,6}, {0,7,6},
{0,6,6}, {0,6,6}, {0,6,6}, {0,6,6},
{4,1,6}, {4,1,6}, {4,1,6}, {4,1,6},
{5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
{1,5,8}, {11,1,8}, {0,11,8}, {0,10,8},
{13,1,8}, {12,1,8}, {3,2,8}, {1,4,8},
{2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
{2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
{1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
{1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
{3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
{3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
{64,0,4}, {64,0,4}, {64,0,4}, {64,0,4}, /* EOB */
{64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
{64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
{64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
{0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
{0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
{0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
{0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
{0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
{0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
{0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
{0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
{9,1,7}, {9,1,7}, {1,3,7}, {1,3,7},
{10,1,7}, {10,1,7}, {0,8,7}, {0,8,7},
{0,9,7}, {0,9,7}, {0,12,8}, {0,13,8},
{2,3,8}, {4,2,8}, {0,14,8}, {0,15,8}
};
......@@ -465,13 +396,13 @@ void __inline__ FillMbAddrIncTable( vpar_thread_t * p_vpar,
int i_start, int i_end, int i_step,
int * pi_value, int i_length )
{
int i_dummy, i_dummy2;
for( i_dummy = i_start ; i_dummy < i_end ; i_dummy += i_step )
int i_pos, i_offset;
for( i_pos = i_start ; i_pos < i_end ; i_pos += i_step )
{
for( i_dummy2 = 0 ; i_dummy2 < i_step ; i_dummy2 ++ )
for( i_offset = 0 ; i_offset < i_step ; i_offset ++ )
{
p_vpar->pl_mb_addr_inc[i_dummy + i_dummy2].i_value = * pi_value;
p_vpar->pl_mb_addr_inc[i_dummy + i_dummy2].i_length = i_length;
p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_value = * pi_value;
p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_length = i_length;
}
(*pi_value)--;
}
......@@ -662,11 +593,11 @@ void vpar_ParseMacroblock( vpar_thread_t * p_vpar, int * pi_mb_address,
int i_mb, i_b, i_mask;
macroblock_t * p_mb;
f_addb_t pf_addb;
elem_t * p_data1;
elem_t * p_data2;
yuv_data_t * p_data1;
yuv_data_t * p_data2;
/************* DEBUG *************/
static i_count = 0;
static int i_count = 0;
int i_inc;
boolean_t b_stop = 0;
......@@ -786,7 +717,7 @@ fprintf( stderr, "motion2 !\n" );
else
{
int pi_coded_block_pattern[2] = {0,
(1 << 4+p_vpar->sequence.i_chroma_nb_blocks) - 1};
(1 << (4+p_vpar->sequence.i_chroma_nb_blocks)) - 1};
p_vpar->mb.i_coded_block_pattern = pi_coded_block_pattern
[p_vpar->mb.i_mb_type & MB_INTRA];
}
......@@ -800,7 +731,7 @@ fprintf( stderr, "motion2 !\n" );
i_mask = 1 << (3 + p_vpar->sequence.i_chroma_nb_blocks);
/* luminance */
p_data1 = (elem_t*) p_mb->p_picture->p_y;
p_data1 = p_mb->p_picture->p_y
+ p_mb->i_l_x + p_mb->i_l_y*(p_vpar->sequence.i_width);
for( i_b = 0 ; i_b < 4 ; i_b++, i_mask >>= 1 )
......@@ -857,11 +788,11 @@ fprintf( stderr, "motion2 !\n" );
}
/* chrominance */
p_data1 = (elem_t*) p_mb->p_picture->p_u
p_data1 = p_mb->p_picture->p_u
+ (p_mb->i_c_x >> pi_chroma_hor[p_vpar->sequence.i_chroma_format])
+ (p_mb->i_c_y >> pi_chroma_ver[p_vpar->sequence.i_chroma_format])
* (p_vpar->sequence.i_chroma_width);
p_data2 = (elem_t*) p_mb->p_picture->p_v
p_data2 = p_mb->p_picture->p_v
+ (p_mb->i_c_x >> pi_chroma_hor[p_vpar->sequence.i_chroma_format])
+ (p_mb->i_c_y >> pi_chroma_ver[p_vpar->sequence.i_chroma_format])
* (p_vpar->sequence.i_chroma_width);
......@@ -869,7 +800,7 @@ fprintf( stderr, "motion2 !\n" );
for( i_b = 4; i_b < 4 + p_vpar->sequence.i_chroma_nb_blocks;
i_b++, i_mask >>= 1 )
{
elem_t * pp_data[2] = {p_data1, p_data2};
yuv_data_t * pp_data[2] = {p_data1, p_data2};
if( p_vpar->mb.i_coded_block_pattern & i_mask )
{
......@@ -1224,64 +1155,100 @@ static void vpar_DecodeMPEG1Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb,
*****************************************************************************/
static void vpar_DecodeMPEG2Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
{
#if 0
int i_dummy;
int i_code;
int i_parse;
int i_nc;
int i_cc;
int i_coef;
int i_type;
int i_code;
int i_length;
int i_pos;
int i_run;
int i_level;
boolean_t b_intra;
boolean_t b_sign;
int * ppi_quant[2];
/* Lookup Table for the chromatic component */
static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
/* There is no special decodding for DC coefficient in non intra blocs
* except that we won't use exactly the same table B.14 note 3 & 4 */
/* Decoding of the coefficients */
i_cc = pi_cc_index[i_b];
/* Determine whether it is luminance or not (chrominance) */
i_type = ( i_cc + 1 ) >> 1;
/* Give a pointer to the quantization matrices for intra blocks */
ppi_quant[0] = p_vpar->sequence.nonintra_quant.pi_matrix;
ppi_quant[1] = p_vpar->sequence.chroma_nonintra_quant.pi_matrix;
/* Decoding of the AC coefficients */
i_nc = 0;
i_coef = 0;
b_intra = p_vpar->picture.b_intra_vlc_format;
for( i_dummy = 0; i_dummy < 64; i_dummy++ )
for( i_parse = 0; ; i_parse++ )
{
i_code = ShowBits( &p_vpar->bit_stream, 16 );
i_run = (*p_vpar->pppl_dct_coef[b_intra][i_code]).i_run;
RemoveBits( &p_vpar->bit_stream,
(*p_vpar->pppl_dct_coef[b_intra][i_code]).i_length );
if( i_code >= 16384 )
{
if( i_parse == 0 )
{
i_run = pl_DCT_tab_dc[(i_code>>12)-4].i_run;
i_level = pl_DCT_tab_dc[(i_code>>12)-4].i_level;
i_length = pl_DCT_tab_dc[(i_code>>12)-4].i_length;
}
else
{
i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
}
}
else
{
i_run = ppl_dct_coef[0][i_code].i_run;
i_length = ppl_dct_coef[0][i_code].i_length;
i_level = ppl_dct_coef[0][i_code].i_level;
}
RemoveBits( &p_vpar->bit_stream, i_length );
switch( i_run )
{
case DCT_ESCAPE:
i_run = GetBits( &p_vpar->bit_stream, 6 );
i_level = GetBits( &p_vpar->bit_stream, 12 );
p_mb->ppi_blocks[i_b][i_dummy] = ( b_sign = ( i_level > 2047 ) )
? ( -4096 + i_level )
: i_level;
i_coef = i_dummy;
i_dummy += i_run;
i_nc ++;
i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
: i_level;
break;
case DCT_EOB:
i_dummy = 64;
if( i_nc <= 1 )
{
p_mb->pf_idct[i_b] = vdec_SparseIDCT;
p_mb->pi_sparse_pos[i_b] = i_coef;
}
else
{
p_mb->pf_idct[i_b] = vdec_IDCT;
}
return;
break;
default:
i_level = (*p_vpar->pppl_dct_coef[b_intra][i_code]).i_level;
b_sign = GetBits( &p_vpar->bit_stream, 1 );
p_mb->ppi_blocks[i_b][i_dummy] = b_sign ? -i_level : i_level;
i_coef = i_dummy;
i_dummy += i_run;
i_nc ++;
}
i_coef = i_parse;
i_parse += i_run;
i_nc ++;
i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
i_level = ( i_level *
p_vpar->slice.i_quantizer_scale *
ppi_quant[i_type][i_pos] ) >> 5;
p_mb->ppi_blocks[i_b][i_parse] = b_sign ? -i_level : i_level;
}
if( i_nc == 1 )
{
p_mb->pf_idct[i_b] = vdec_SparseIDCT;
p_mb->pi_sparse_pos[i_b] = i_coef;
}
else
{
p_mb->pf_idct[i_b] = vdec_IDCT;
}
#endif
fprintf( stderr, "MPEG2 end (%d)\n", i_b );
exit(0);
}
/*****************************************************************************
......@@ -1289,16 +1256,13 @@ static void vpar_DecodeMPEG2Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, in
*****************************************************************************/
static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
{
int i_dummy;
int i_parse;
int i_nc;
int i_cc;
int i_coef;
int i_type;
int i_code;
int i_length;
int i_code5;
int i_select;
int i_offset;
int i_pos;
int i_dct_dc_size;
int i_dct_dc_diff;
......@@ -1306,14 +1270,21 @@ static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb,
int i_level;
boolean_t b_vlc_intra;
boolean_t b_sign;
int * ppi_quant[2];
/* Lookup Table for the chromatic component */
static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
i_cc = pi_cc_index[i_b];
#if 0
/* Determine whether it is luminance or not (chrominance) */
i_type = ( i_cc + 1 ) >> 1;
/* Give a pointer to the quantization matrices for intra blocks */
ppi_quant[0] = p_vpar->sequence.intra_quant.pi_matrix;
ppi_quant[1] = p_vpar->sequence.chroma_intra_quant.pi_matrix;
#if 0
/* Decoding of the DC intra coefficient */
/* The nb of bits to parse depends on i_type */
i_code = ShowBits( &p_vpar->bit_stream, 9 + i_type );
......@@ -1329,68 +1300,51 @@ static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb,
i_pos = ( i_code5 * ( ! i_select ) ) + ( ( i_code - i_offset ) * i_select );
i_dct_dc_size = p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_value;
#endif
if( i_b < 4 )
if( !i_type/*i_b < 4*/ )
{
int code, size, length, dct_diff;
/* decode length */
code = ShowBits(&p_vpar->bit_stream, 5);
if (code<31)
i_code = ShowBits(&p_vpar->bit_stream, 5);
if (i_code<31)
{
size = pl_dct_dc_lum_init_table_1[code].i_value;
length = pl_dct_dc_lum_init_table_1[code].i_length;
RemoveBits(&p_vpar->bit_stream, length);
i_dct_dc_size = pl_dct_dc_lum_init_table_1[i_code].i_value;
i_length = pl_dct_dc_lum_init_table_1[i_code].i_length;
RemoveBits( &p_vpar->bit_stream, i_length);
}
else
{
code = ShowBits(&p_vpar->bit_stream, 9) - 0x1f0;
size = pl_dct_dc_lum_init_table_2[code].i_value;
length = pl_dct_dc_lum_init_table_2[code].i_length;
RemoveBits( &p_vpar->bit_stream, length);
}
if (size==0)
dct_diff = 0;
else
{
dct_diff = GetBits( &p_vpar->bit_stream, size);
if ((dct_diff & (1<<(size-1)))==0)
dct_diff-= (1<<size) - 1;
i_code = ShowBits(&p_vpar->bit_stream, 9) - 0x1f0;
i_dct_dc_size = pl_dct_dc_lum_init_table_2[i_code].i_value;
i_length = pl_dct_dc_lum_init_table_2[i_code].i_length;
RemoveBits( &p_vpar->bit_stream, i_length);
}
i_dct_dc_diff = dct_diff;
}
else
{
int code, size, length, dct_diff;
/* decode length */
code = ShowBits(&p_vpar->bit_stream, 5);
i_code = ShowBits(&p_vpar->bit_stream, 5);
if (code<31)
{
size = pl_dct_dc_chrom_init_table_1[code].i_value;
length = pl_dct_dc_chrom_init_table_1[code].i_length;
RemoveBits(&p_vpar->bit_stream, length);
}
else
if (i_code<31)
{
code = ShowBits(&p_vpar->bit_stream, 10) - 0x3e0;
size = pl_dct_dc_chrom_init_table_2[code].i_value;
length = pl_dct_dc_chrom_init_table_2[code].i_length;
RemoveBits( &p_vpar->bit_stream, length);
i_dct_dc_size = pl_dct_dc_chrom_init_table_1[i_code].i_value;
i_length = pl_dct_dc_chrom_init_table_1[i_code].i_length;
RemoveBits(&p_vpar->bit_stream, i_length);
}
if (size==0)
dct_diff = 0;
else
{
dct_diff = GetBits( &p_vpar->bit_stream, size);
if ((dct_diff & (1<<(size-1)))==0)
dct_diff-= (1<<size) - 1;
i_code = ShowBits(&p_vpar->bit_stream, 10) - 0x3e0;
i_dct_dc_size = pl_dct_dc_chrom_init_table_2[i_code].i_value;
i_length = pl_dct_dc_chrom_init_table_2[i_code].i_length;
RemoveBits( &p_vpar->bit_stream, i_length);
}
i_dct_dc_diff = dct_diff;
}
if (i_dct_dc_size==0)
i_dct_dc_diff = 0;
else
{
i_dct_dc_diff = GetBits( &p_vpar->bit_stream, i_dct_dc_size);
if ((i_dct_dc_diff & (1<<(i_dct_dc_size-1)))==0)
i_dct_dc_diff-= (1<<i_dct_dc_size) - 1;
}
/* Dump the variable length code */
......@@ -1409,7 +1363,7 @@ static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb,
i_coef = 0;
b_vlc_intra = p_vpar->picture.b_intra_vlc_format;
for( i_dummy = 1; /*i_dummy < 64*/; i_dummy++ )
for( i_parse = 1; /*i_parse < 64*/; i_parse++ )
{
i_code = ShowBits( &p_vpar->bit_stream, 16 );
if( i_code >= 16384 )
......@@ -1435,6 +1389,7 @@ static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb,
i_level = ppl_dct_coef[b_vlc_intra][i_code].i_level;
}
#if 0
{
int code = i_code;
int intra_vlc_format = b_vlc_intra;
......@@ -1477,24 +1432,23 @@ static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb,
exit(0);
}
}
#endif
RemoveBits( &p_vpar->bit_stream, i_length );
switch( i_run )
switch( i_run )
{
case DCT_ESCAPE:
i_run = GetBits( &p_vpar->bit_stream, 6 );
i_level = GetBits( &p_vpar->bit_stream, 12 );
p_mb->ppi_blocks[i_b][i_dummy] = ( b_sign = ( i_level > 2047 ) )
/*p_mb->ppi_blocks[i_b][i_parse] = ( b_sign = ( i_level > 2047 ) )
? ( -4096 + i_level )
: i_level;
i_coef = i_dummy;
i_dummy += i_run;
i_nc ++;
: i_level;*/
i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
: i_level;
break;
case DCT_EOB:
if( i_nc <= 1 )
......@@ -1511,26 +1465,24 @@ static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb,
break;
default:
b_sign = GetBits( &p_vpar->bit_stream, 1 );
p_mb->ppi_blocks[i_b][i_dummy] = b_sign ? -i_level : i_level;
i_coef = i_dummy;
i_dummy += i_run;
i_nc ++;
//p_mb->ppi_blocks[i_b][i_parse] = b_sign ? -i_level : i_level;
}
// fprintf( stderr, "i_code : %d (%d), run : %d, %d, %d (%4x) ", i_code , b_vlc_intra,
// i_run, i_level, i_dummy, ShowBits( &p_vpar->bit_stream, 16 ) );
// i_run, i_level, i_parse, ShowBits( &p_vpar->bit_stream, 16 ) );
//fprintf( stderr, "- %4x\n",ShowBits( &p_vpar->bit_stream, 16 ) );
}
if( i_nc <= 1 )
{
p_mb->pf_idct[i_b] = vdec_SparseIDCT;
p_mb->pi_sparse_pos[i_b] = i_coef;
}
else
{
p_mb->pf_idct[i_b] = vdec_IDCT;
i_coef = i_parse;
i_parse += i_run;
i_nc ++;
i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
i_level = ( i_level *
p_vpar->slice.i_quantizer_scale *
ppi_quant[i_type][i_pos] ) >> 4;
p_mb->ppi_blocks[i_b][i_parse] = b_sign ? -i_level : i_level;
}
fprintf( stderr, "MPEG2 end (%d)\n", i_b );
exit(0);
}
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