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vlc-1.1
Commit aab60d48 authored by Christophe Massiot's avatar Christophe Massiot
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Nettoyage et commentationnement.

parent ba8d1d4c
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Showing with 105 additions and 92 deletions
include/video_parser.h
View file @ aab60d48
...@@ -96,7 +96,6 @@ typedef struct vpar_thread_s ...@@ -96,7 +96,6 @@ typedef struct vpar_thread_s
/* Parser properties */ /* Parser properties */
sequence_t sequence; sequence_t sequence;
picture_parsing_t picture; picture_parsing_t picture;
slice_parsing_t slice;
macroblock_parsing_t mb; macroblock_parsing_t mb;
video_synchro_t synchro; video_synchro_t synchro;
...@@ -130,11 +129,6 @@ typedef struct vpar_thread_s ...@@ -130,11 +129,6 @@ typedef struct vpar_thread_s
#endif #endif
} vpar_thread_t; } vpar_thread_t;
/* Chroma types */
#define CHROMA_420 1
#define CHROMA_422 2
#define CHROMA_444 3
/***************************************************************************** /*****************************************************************************
* Prototypes * Prototypes
*****************************************************************************/ *****************************************************************************/
...@@ -194,7 +188,7 @@ static __inline__ void LoadQuantizerScale( struct vpar_thread_s * p_vpar ) ...@@ -194,7 +188,7 @@ static __inline__ void LoadQuantizerScale( struct vpar_thread_s * p_vpar )
} }
}; };
p_vpar->slice.i_quantizer_scale = ppi_quantizer_scale p_vpar->mb.i_quantizer_scale = ppi_quantizer_scale
[(!p_vpar->sequence.b_mpeg2 << 1) | p_vpar->picture.b_q_scale_type] [(!p_vpar->sequence.b_mpeg2 << 1) | p_vpar->picture.b_q_scale_type]
[GetBits( &p_vpar->bit_stream, 5 )]; [GetBits( &p_vpar->bit_stream, 5 )];
} }
......
include/vpar_blocks.h
View file @ aab60d48
...@@ -16,33 +16,34 @@ ...@@ -16,33 +16,34 @@
*****************************************************************************/ *****************************************************************************/
/***************************************************************************** /*****************************************************************************
* Function pointers * macroblock_t : information on a macroblock passed to the video_decoder
*****************************************************************************/ * thread
typedef void (*f_parse_mb_t)( struct vpar_thread_s*, int *, int, int,
boolean_t, int, int, int, boolean_t);
/*****************************************************************************
* macroblock_t : information on a macroblock
*****************************************************************************/ *****************************************************************************/
typedef struct macroblock_s typedef struct macroblock_s
{ {
picture_t * p_picture; /* current frame in progress */
int i_mb_type; /* macroblock type */ int i_mb_type; /* macroblock type */
int i_coded_block_pattern; int i_coded_block_pattern;
int i_chroma_nb_blocks; /* nb of bks for a chr comp */ /* which blocks are coded ? */
picture_t * p_picture; int i_chroma_nb_blocks; /* number of blocks for
* chroma components */
/* IDCT information */ /* IDCT information */
dctelem_t ppi_blocks[12][64]; /* blocks */ dctelem_t ppi_blocks[12][64]; /* blocks */
f_idct_t pf_idct[12]; /* sparse IDCT or not ? */ f_idct_t pf_idct[12]; /* sparse IDCT or not ? */
int pi_sparse_pos[12]; int pi_sparse_pos[12]; /* position of the
* non-NULL coeff */
/* Motion compensation information */ /* Motion compensation information */
f_motion_t pf_motion; /* function to use for motion comp */ f_motion_t pf_motion; /* function to use for motion comp */
picture_t * p_backward; picture_t * p_backward; /* backward reference frame */
picture_t * p_forward; picture_t * p_forward; /* forward reference frame */
int ppi_field_select[2][2]; int ppi_field_select[2][2]; /* field to use to
int pppi_motion_vectors[2][2][2]; * form predictions */
int ppi_dmv[2][2]; int pppi_motion_vectors[2][2][2]; /* motion vectors */
int ppi_dmv[2][2]; /* differential motion vectors */
/* coordinates of the block in the picture */
int i_l_x, i_c_x; int i_l_x, i_c_x;
int i_motion_l_y; int i_motion_l_y;
int i_motion_c_y; int i_motion_c_y;
...@@ -63,20 +64,27 @@ typedef struct macroblock_s ...@@ -63,20 +64,27 @@ typedef struct macroblock_s
} macroblock_t; } macroblock_t;
/***************************************************************************** /*****************************************************************************
* macroblock_parsing_t : parser context descriptor #3 * macroblock_parsing_t : macroblock context & predictors
*****************************************************************************/ *****************************************************************************/
typedef struct typedef struct
{ {
unsigned char i_quantizer_scale; /* scale of the quantization
* matrices */
int pi_dc_dct_pred[3]; /* ISO/IEC 13818-2 7.2.1 */
int pppi_pmv[2][2][2]; /* Motion vect predictors, 7.6.3 */
/* Context used to optimize block parsing */
int i_motion_type, i_mv_count, i_mv_format; int i_motion_type, i_mv_count, i_mv_format;
boolean_t b_dmv, b_dct_type; boolean_t b_dmv, b_dct_type;
/* Coordinates of the upper-left pixel of the macroblock, in lum and
* chroma */
int i_l_x, i_l_y, i_c_x, i_c_y; int i_l_x, i_l_y, i_c_x, i_c_y;
} macroblock_parsing_t; } macroblock_parsing_t;
/***************************************************************************** /*****************************************************************************
* lookup_t : entry type for lookup tables * * lookup_t : entry type for lookup tables *
*****************************************************************************/ *****************************************************************************/
typedef struct lookup_s typedef struct lookup_s
{ {
int i_value; int i_value;
...@@ -86,7 +94,6 @@ typedef struct lookup_s ...@@ -86,7 +94,6 @@ typedef struct lookup_s
/****************************************************************************** /******************************************************************************
* ac_lookup_t : special entry type for lookup tables about ac coefficients * ac_lookup_t : special entry type for lookup tables about ac coefficients
*****************************************************************************/ *****************************************************************************/
typedef struct dct_lookup_s typedef struct dct_lookup_s
{ {
char i_run; char i_run;
......
include/vpar_headers.h
View file @ aab60d48
...@@ -27,28 +27,41 @@ typedef struct quant_matrix_s ...@@ -27,28 +27,41 @@ typedef struct quant_matrix_s
/***************************************************************************** /*****************************************************************************
* sequence_t : sequence descriptor * sequence_t : sequence descriptor
*****************************************************************************
* This structure should only be changed when reading the sequence header,
* or exceptionnally some extension structures (like quant_matrix).
*****************************************************************************/ *****************************************************************************/
typedef struct sequence_s typedef struct sequence_s
{ {
u32 i_height, i_width, i_size; u32 i_height, i_width; /* height and width of the lum
* comp of the picture */
u32 i_size; /* total number of pel of the lum comp */
u32 i_mb_height, i_mb_width, i_mb_size; u32 i_mb_height, i_mb_width, i_mb_size;
unsigned int i_aspect_ratio, i_matrix_coefficients; /* the same, in macroblock units */
float r_frame_rate; unsigned int i_aspect_ratio; /* height/width display ratio */
boolean_t b_mpeg2; unsigned int i_matrix_coefficients;/* coeffs of the YUV transform */
boolean_t b_progressive; float r_frame_rate; /* theoritical frame rate in fps */
unsigned int i_scalable_mode; boolean_t b_mpeg2; /* guess */
boolean_t b_progressive; /* progressive (ie.
* non-interlaced) frame */
unsigned int i_scalable_mode; /* scalability ; unsupported, but
* modifies the syntax of the binary
* stream. */
quant_matrix_t intra_quant, nonintra_quant; quant_matrix_t intra_quant, nonintra_quant;
quant_matrix_t chroma_intra_quant, chroma_nonintra_quant; quant_matrix_t chroma_intra_quant, chroma_nonintra_quant;
/* current quantization matrices */
/* Chromatic information */ /* Chromatic information */
unsigned int i_chroma_format; unsigned int i_chroma_format; /* see CHROMA_* below */
int i_chroma_nb_blocks; int i_chroma_nb_blocks; /* number of chroma blocks */
u32 i_chroma_width; u32 i_chroma_width;/* width of a line of the chroma comp */
u32 i_chroma_mb_width, i_chroma_mb_height; u32 i_chroma_mb_width, i_chroma_mb_height;
/* size of a macroblock in the chroma buffer
* (eg. 8x8 or 8x16 or 16x16) */
/* Parser context */ /* Parser context */
picture_t * p_forward; picture_t * p_forward; /* current forward reference frame */
picture_t * p_backward; picture_t * p_backward; /* current backward reference frame */
/* Copyright extension */ /* Copyright extension */
boolean_t b_copyright_flag; /* Whether the following boolean_t b_copyright_flag; /* Whether the following
...@@ -61,12 +74,17 @@ typedef struct sequence_s ...@@ -61,12 +74,17 @@ typedef struct sequence_s
/***************************************************************************** /*****************************************************************************
* picture_parsing_t : parser context descriptor * picture_parsing_t : parser context descriptor
*****************************************************************************
* This structure should only be changed when reading the picture header.
*****************************************************************************/ *****************************************************************************/
typedef struct picture_parsing_s typedef struct picture_parsing_s
{ {
/* ISO/CEI 11172-2 backward compatibility */
boolean_t pb_full_pel_vector[2]; boolean_t pb_full_pel_vector[2];
int i_forward_f_code, i_backward_f_code; int i_forward_f_code, i_backward_f_code;
/* Values from the picture_coding_extension. Please refer to ISO/IEC
* 13818-2. */
int ppi_f_code[2][2]; int ppi_f_code[2][2];
int i_intra_dc_precision; int i_intra_dc_precision;
boolean_t b_frame_pred_frame_dct, b_q_scale_type; boolean_t b_frame_pred_frame_dct, b_q_scale_type;
...@@ -74,35 +92,24 @@ typedef struct picture_parsing_s ...@@ -74,35 +92,24 @@ typedef struct picture_parsing_s
boolean_t b_alternate_scan, b_progressive_frame; boolean_t b_alternate_scan, b_progressive_frame;
boolean_t b_top_field_first, b_concealment_mv; boolean_t b_top_field_first, b_concealment_mv;
boolean_t b_repeat_first_field; boolean_t b_repeat_first_field;
int i_l_stride, i_c_stride; /* Relative to the current field */
int i_coding_type, i_structure;
f_parse_mb_t pf_parse_mb; boolean_t b_frame_structure; /* i_structure == FRAME_STRUCTURE */
/* Used for second field management */
int i_current_structure;
picture_t * p_picture; picture_t * p_picture; /* picture buffer from vout */
int i_current_structure; /* current parsed structure of
* p_picture (second field ?) */
#ifdef VDEC_SMP #ifdef VDEC_SMP
macroblock_t * pp_mb[MAX_MB]; macroblock_t * pp_mb[MAX_MB]; /* macroblock buffer to
* send to the vdec thread(s) */
#endif #endif
boolean_t b_error; /* parsing error, try to recover */
/* Relative to the current field */ int i_l_stride, i_c_stride;
int i_coding_type, i_structure; /* number of coeffs to jump when changing
boolean_t b_frame_structure; * lines (different with field pictures) */
boolean_t b_error;
} picture_parsing_t; } picture_parsing_t;
/*****************************************************************************
* slice_parsing_t : parser context descriptor #2
*****************************************************************************/
typedef struct slice_parsing_s
{
unsigned char i_quantizer_scale;
int pi_dc_dct_pred[3]; /* ISO/IEC 13818-2 7.2.1 */
int pppi_pmv[2][2][2]; /* Motion vect predictors, 7.6.3 */
} slice_parsing_t;
/***************************************************************************** /*****************************************************************************
* Standard codes * Standard codes
*****************************************************************************/ *****************************************************************************/
...@@ -134,6 +141,11 @@ typedef struct slice_parsing_s ...@@ -134,6 +141,11 @@ typedef struct slice_parsing_s
#define SC_SNR 3 #define SC_SNR 3
#define SC_TEMP 4 #define SC_TEMP 4
/* Chroma types */
#define CHROMA_420 1
#define CHROMA_422 2
#define CHROMA_444 3
/* Pictures types */ /* Pictures types */
#define I_CODING_TYPE 1 #define I_CODING_TYPE 1
#define P_CODING_TYPE 2 #define P_CODING_TYPE 2
......
src/video_parser/vpar_blocks.c
View file @ aab60d48
...@@ -713,7 +713,7 @@ static __inline__ void DecodeMPEG2NonIntra( vpar_thread_t * p_vpar, ...@@ -713,7 +713,7 @@ static __inline__ void DecodeMPEG2NonIntra( vpar_thread_t * p_vpar,
} }
i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse]; i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
i_level = ( ((i_level << 1) + 1) * p_vpar->slice.i_quantizer_scale i_level = ( ((i_level << 1) + 1) * p_vpar->mb.i_quantizer_scale
* pi_quant[i_pos] ) >> 5; * pi_quant[i_pos] ) >> 5;
p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level; p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
} }
...@@ -830,11 +830,11 @@ static __inline__ void DecodeMPEG2Intra( vpar_thread_t * p_vpar, ...@@ -830,11 +830,11 @@ static __inline__ void DecodeMPEG2Intra( vpar_thread_t * p_vpar,
// p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_length ); // p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_length );
/* Read the actual code with the good length */ /* Read the actual code with the good length */
p_vpar->slice.pi_dc_dct_pred[i_cc] += i_dct_dc_diff; p_vpar->mb.pi_dc_dct_pred[i_cc] += i_dct_dc_diff;
p_mb->ppi_blocks[i_b][0] = ( p_vpar->slice.pi_dc_dct_pred[i_cc] << p_mb->ppi_blocks[i_b][0] = ( p_vpar->mb.pi_dc_dct_pred[i_cc] <<
( 3 - p_vpar->picture.i_intra_dc_precision ) ); ( 3 - p_vpar->picture.i_intra_dc_precision ) );
i_nc = ( p_vpar->slice.pi_dc_dct_pred[i_cc] != 0 ); i_nc = ( p_vpar->mb.pi_dc_dct_pred[i_cc] != 0 );
/* Decoding of the AC coefficients */ /* Decoding of the AC coefficients */
...@@ -955,7 +955,7 @@ static __inline__ void DecodeMPEG2Intra( vpar_thread_t * p_vpar, ...@@ -955,7 +955,7 @@ static __inline__ void DecodeMPEG2Intra( vpar_thread_t * p_vpar,
i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse]; i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
i_level = ( i_level * i_level = ( i_level *
p_vpar->slice.i_quantizer_scale * p_vpar->mb.i_quantizer_scale *
pi_quant[i_pos] ) >> 4; pi_quant[i_pos] ) >> 4;
p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level; p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
} }
...@@ -1060,9 +1060,9 @@ static __inline__ void MotionVector( vpar_thread_t * p_vpar, ...@@ -1060,9 +1060,9 @@ static __inline__ void MotionVector( vpar_thread_t * p_vpar,
i_motion_code = MotionCode( p_vpar ); i_motion_code = MotionCode( p_vpar );
i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ? i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ?
GetBits( &p_vpar->bit_stream, i_r_size) : 0; GetBits( &p_vpar->bit_stream, i_r_size) : 0;
DecodeMotionVector( &p_vpar->slice.pppi_pmv[i_r][i_s][0], i_r_size, DecodeMotionVector( &p_vpar->mb.pppi_pmv[i_r][i_s][0], i_r_size,
i_motion_code, i_motion_residual, i_full_pel ); i_motion_code, i_motion_residual, i_full_pel );
p_mb->pppi_motion_vectors[i_r][i_s][0] = p_vpar->slice.pppi_pmv[i_r][i_s][0]; p_mb->pppi_motion_vectors[i_r][i_s][0] = p_vpar->mb.pppi_pmv[i_r][i_s][0];
if( p_vpar->mb.b_dmv ) if( p_vpar->mb.b_dmv )
{ {
...@@ -1085,17 +1085,17 @@ static __inline__ void MotionVector( vpar_thread_t * p_vpar, ...@@ -1085,17 +1085,17 @@ static __inline__ void MotionVector( vpar_thread_t * p_vpar,
if( (p_vpar->mb.i_mv_format == MOTION_FIELD) if( (p_vpar->mb.i_mv_format == MOTION_FIELD)
&& (i_structure == FRAME_STRUCTURE) ) && (i_structure == FRAME_STRUCTURE) )
{ {
p_vpar->slice.pppi_pmv[i_r][i_s][1] >>= 1; p_vpar->mb.pppi_pmv[i_r][i_s][1] >>= 1;
} }
DecodeMotionVector( &p_vpar->slice.pppi_pmv[i_r][i_s][1], i_r_size, DecodeMotionVector( &p_vpar->mb.pppi_pmv[i_r][i_s][1], i_r_size,
i_motion_code, i_motion_residual, i_full_pel ); i_motion_code, i_motion_residual, i_full_pel );
if( (p_vpar->mb.i_mv_format == MOTION_FIELD) if( (p_vpar->mb.i_mv_format == MOTION_FIELD)
&& (i_structure == FRAME_STRUCTURE) ) && (i_structure == FRAME_STRUCTURE) )
p_vpar->slice.pppi_pmv[i_r][i_s][1] <<= 1; p_vpar->mb.pppi_pmv[i_r][i_s][1] <<= 1;
p_mb->pppi_motion_vectors[i_r][i_s][1] = p_vpar->slice.pppi_pmv[i_r][i_s][1]; p_mb->pppi_motion_vectors[i_r][i_s][1] = p_vpar->mb.pppi_pmv[i_r][i_s][1];
if( p_vpar->mb.b_dmv ) if( p_vpar->mb.b_dmv )
{ {
...@@ -1178,10 +1178,10 @@ static __inline__ void DecodeMVMPEG2( vpar_thread_t * p_vpar, ...@@ -1178,10 +1178,10 @@ static __inline__ void DecodeMVMPEG2( vpar_thread_t * p_vpar,
= GetBits( &p_vpar->bit_stream, 1 ); = GetBits( &p_vpar->bit_stream, 1 );
} }
MotionVector( p_vpar, p_mb, 0, i_s, 0, i_structure ); MotionVector( p_vpar, p_mb, 0, i_s, 0, i_structure );
p_vpar->slice.pppi_pmv[1][i_s][0] = p_vpar->slice.pppi_pmv[0][i_s][0]; p_vpar->mb.pppi_pmv[1][i_s][0] = p_vpar->mb.pppi_pmv[0][i_s][0];
p_vpar->slice.pppi_pmv[1][i_s][1] = p_vpar->slice.pppi_pmv[0][i_s][1]; p_vpar->mb.pppi_pmv[1][i_s][1] = p_vpar->mb.pppi_pmv[0][i_s][1];
p_mb->pppi_motion_vectors[1][i_s][0] = p_vpar->slice.pppi_pmv[0][i_s][0]; p_mb->pppi_motion_vectors[1][i_s][0] = p_vpar->mb.pppi_pmv[0][i_s][0];
p_mb->pppi_motion_vectors[1][i_s][1] = p_vpar->slice.pppi_pmv[0][i_s][1]; p_mb->pppi_motion_vectors[1][i_s][1] = p_vpar->mb.pppi_pmv[0][i_s][1];
} }
else else
{ {
...@@ -1622,14 +1622,14 @@ static __inline__ void ParseMacroblock( ...@@ -1622,14 +1622,14 @@ static __inline__ void ParseMacroblock(
/* Skipped macroblock (ISO/IEC 13818-2 7.6.6). */ /* Skipped macroblock (ISO/IEC 13818-2 7.6.6). */
/* Reset DC predictors (7.2.1). */ /* Reset DC predictors (7.2.1). */
p_vpar->slice.pi_dc_dct_pred[0] = p_vpar->slice.pi_dc_dct_pred[1] p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
= p_vpar->slice.pi_dc_dct_pred[2] = p_vpar->mb.pi_dc_dct_pred[2]
= 1 << (7 + p_vpar->picture.i_intra_dc_precision); = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
if( i_coding_type == P_CODING_TYPE ) if( i_coding_type == P_CODING_TYPE )
{ {
/* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */ /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) ); memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
} }
for( i_mb = i_mb_previous + 1; i_mb < *pi_mb_address; i_mb++ ) for( i_mb = i_mb_previous + 1; i_mb < *pi_mb_address; i_mb++ )
...@@ -1684,7 +1684,7 @@ static __inline__ void ParseMacroblock( ...@@ -1684,7 +1684,7 @@ static __inline__ void ParseMacroblock(
{ {
/* Special No-MC macroblock in P pictures (7.6.3.5). */ /* Special No-MC macroblock in P pictures (7.6.3.5). */
p_mb->i_mb_type |= MB_MOTION_FORWARD; p_mb->i_mb_type |= MB_MOTION_FORWARD;
memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) ); memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) ); memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
p_vpar->mb.i_motion_type = 1 + (i_structure == FRAME_STRUCTURE); p_vpar->mb.i_motion_type = 1 + (i_structure == FRAME_STRUCTURE);
p_mb->ppi_field_select[0][0] = (i_structure == BOTTOM_FIELD); p_mb->ppi_field_select[0][0] = (i_structure == BOTTOM_FIELD);
...@@ -1693,8 +1693,8 @@ static __inline__ void ParseMacroblock( ...@@ -1693,8 +1693,8 @@ static __inline__ void ParseMacroblock(
if( (i_coding_type != I_CODING_TYPE) && !(p_mb->i_mb_type & MB_INTRA) ) if( (i_coding_type != I_CODING_TYPE) && !(p_mb->i_mb_type & MB_INTRA) )
{ {
/* Reset DC predictors (7.2.1). */ /* Reset DC predictors (7.2.1). */
p_vpar->slice.pi_dc_dct_pred[0] = p_vpar->slice.pi_dc_dct_pred[1] p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
= p_vpar->slice.pi_dc_dct_pred[2] = p_vpar->mb.pi_dc_dct_pred[2]
= 1 << (7 + p_vpar->picture.i_intra_dc_precision); = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
/* Motion function pointer. */ /* Motion function pointer. */
...@@ -1731,7 +1731,7 @@ static __inline__ void ParseMacroblock( ...@@ -1731,7 +1731,7 @@ static __inline__ void ParseMacroblock(
if( !p_vpar->picture.b_concealment_mv ) if( !p_vpar->picture.b_concealment_mv )
{ {
/* Reset MV predictors. */ /* Reset MV predictors. */
memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) ); memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
} }
else else
{ {
...@@ -1830,12 +1830,12 @@ static __inline__ void SliceHeader( vpar_thread_t * p_vpar, ...@@ -1830,12 +1830,12 @@ static __inline__ void SliceHeader( vpar_thread_t * p_vpar,
*pi_mb_address = (i_vert_code - 1)*p_vpar->sequence.i_mb_width; *pi_mb_address = (i_vert_code - 1)*p_vpar->sequence.i_mb_width;
/* Reset DC coefficients predictors (ISO/IEC 13818-2 7.2.1). */ /* Reset DC coefficients predictors (ISO/IEC 13818-2 7.2.1). */
p_vpar->slice.pi_dc_dct_pred[0] = p_vpar->slice.pi_dc_dct_pred[1] p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
= p_vpar->slice.pi_dc_dct_pred[2] = p_vpar->mb.pi_dc_dct_pred[2]
= 1 << (7 + p_vpar->picture.i_intra_dc_precision); = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
/* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */ /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) ); memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
do do
{ {
......
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