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Commit 1e6848bd authored by Christophe Massiot's avatar Christophe Massiot
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vpar_motion.c n'est plus n�cessaire d�sormais.

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Makefile
View file @ 1e6848bd
......@@ -234,7 +234,6 @@ else
video_parser_obj = video_parser/video_parser.o \
video_parser/vpar_headers.o \
video_parser/vpar_blocks.o \
video_parser/vpar_motion.o \
video_parser/vpar_synchro.o \
video_parser/video_fifo.o
......
src/video_parser/vpar_motion.c deleted 100644 → 0
View file @ 93ff7f1c
/*****************************************************************************
* vpar_motion.c : motion vectors parsing
* (c)1999 VideoLAN
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/uio.h>
#include "config.h"
#include "common.h"
#include "mtime.h"
#include "vlc_thread.h"
#include "intf_msg.h"
#include "debug.h" /* ?? temporaire, requis par netlist.h */
#include "input.h"
#include "input_netlist.h"
#include "decoder_fifo.h"
#include "video.h"
#include "video_output.h"
#include "vdec_idct.h"
#include "video_decoder.h"
#include "vdec_motion.h"
#include "vpar_blocks.h"
#include "vpar_headers.h"
#include "vpar_synchro.h"
#include "video_parser.h"
#include "vpar_motion.h"
#include "video_fifo.h"
/*
* Local prototypes
*/
/****************************************************************************
* vpar_MotionCode : Parse the next motion code
****************************************************************************/
static __inline__ int vpar_MotionCode( vpar_thread_t * p_vpar )
{
int i_code;
static lookup_t pl_mv_tab0[8] =
{ {-1,0}, {3,3}, {2,2}, {2,2}, {1,1}, {1,1}, {1,1}, {1,1} };
/* Table B-10, motion_code, codes 0000011 ... 000011x */
static lookup_t pl_mv_tab1[8] =
{ {-1,0}, {-1,0}, {-1,0}, {7,6}, {6,6}, {5,6}, {4,5}, {4,5} };
/* Table B-10, motion_code, codes 0000001100 ... 000001011x */
static lookup_t pl_mv_tab2[12] = {
{16,9}, {15,9}, {14,9}, {13,9},
{12,9}, {11,9}, {10,8}, {10,8},
{9,8}, {9,8}, {8,8}, {8,8} };
if( GetBits(&p_vpar->bit_stream, 1) )
{
return 0;
}
if( (i_code = ShowBits(&p_vpar->bit_stream, 9)) >= 64 )
{
i_code >>= 6;
RemoveBits( &p_vpar->bit_stream, pl_mv_tab0[i_code].i_length );
return( GetBits(&p_vpar->bit_stream, 1) ? -pl_mv_tab0[i_code].i_value : pl_mv_tab0[i_code].i_value );
}
if( i_code >= 24 )
{
i_code >>= 3;
RemoveBits( &p_vpar->bit_stream, pl_mv_tab1[i_code].i_length );
return( GetBits(&p_vpar->bit_stream, 1) ? -pl_mv_tab1[i_code].i_value : pl_mv_tab1[i_code].i_value );
}
if( (i_code -= 12) < 0 )
{
p_vpar->picture.b_error = 1;
intf_DbgMsg( "vpar debug: Invalid motion_vector code\n" );
return 0;
}
RemoveBits( &p_vpar->bit_stream, pl_mv_tab2[i_code].i_length );
return( GetBits(&p_vpar->bit_stream, 1) ? -pl_mv_tab2[i_code].i_value : pl_mv_tab2[i_code].i_value );
}
/****************************************************************************
* vpar_DecodeMotionVector : decode a motion_vector
****************************************************************************/
static __inline__ void vpar_DecodeMotionVector( int * pi_prediction, int i_r_size,
int i_motion_code, int i_motion_residual, int i_full_pel )
{
int i_limit, i_vector;
/* ISO/IEC 13818-1 section 7.6.3.1 */
i_limit = 16 << i_r_size;
i_vector = *pi_prediction >> i_full_pel;
if( i_motion_code > 0 )
{
i_vector += ((i_motion_code-1) << i_r_size) + i_motion_residual + 1;
if( i_vector >= i_limit )
i_vector -= i_limit + i_limit;
}
else if( i_motion_code < 0 )
{
i_vector -= ((-i_motion_code-1) << i_r_size) + i_motion_residual + 1;
if( i_vector < -i_limit )
i_vector += i_limit + i_limit;
}
*pi_prediction = i_vector << i_full_pel;
}
/****************************************************************************
* vpar_MotionVector : Parse the next motion_vector field
****************************************************************************/
void vpar_MotionVector( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_r,
int i_s, int i_full_pel )
{
int i_motion_code, i_motion_residual;
int i_r_size;
int pi_dm_vector[2];
i_r_size = p_vpar->picture.ppi_f_code[i_s][0]-1;
i_motion_code = vpar_MotionCode( p_vpar );
i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ?
GetBits( &p_vpar->bit_stream, i_r_size) : 0;
vpar_DecodeMotionVector( &p_vpar->slice.pppi_pmv[i_r][i_s][0], i_r_size,
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];
if( p_vpar->mb.b_dmv )
{
if( GetBits(&p_vpar->bit_stream, 1) )
{
pi_dm_vector[0] = GetBits( &p_vpar->bit_stream, 1 ) ? -1 : 1;
}
else
{
pi_dm_vector[0] = 0;
}
}
i_r_size = p_vpar->picture.ppi_f_code[i_s][1]-1;
i_motion_code = vpar_MotionCode( p_vpar );
i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ?
GetBits( &p_vpar->bit_stream, i_r_size) : 0;
if( (p_vpar->mb.i_mv_format == MOTION_FIELD) && (p_vpar->picture.i_structure == FRAME_STRUCTURE) )
{
p_vpar->slice.pppi_pmv[i_r][i_s][1] >>= 1;
}
vpar_DecodeMotionVector( &p_vpar->slice.pppi_pmv[i_r][i_s][1], i_r_size,
i_motion_code, i_motion_residual, i_full_pel );
if( (p_vpar->mb.i_mv_format == MOTION_FIELD) && (p_vpar->picture.i_structure == FRAME_STRUCTURE) )
p_vpar->slice.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];
if( p_vpar->mb.b_dmv )
{
if( GetBits(&p_vpar->bit_stream, 1) )
{
pi_dm_vector[1] = GetBits( &p_vpar->bit_stream, 1 ) ? -1 : 1;
}
else
{
pi_dm_vector[1] = 0;
}
/* Dual Prime Arithmetic (ISO/IEC 13818-2 section 7.6.3.6) */
#define i_mv_x p_mb->pppi_motion_vectors[0][0][0]
if( p_vpar->picture.i_structure == FRAME_STRUCTURE )
{
#define i_mv_y (p_mb->pppi_motion_vectors[0][0][1] << 1)
if( p_vpar->picture.b_top_field_first )
{
/* vector for prediction of top field from bottom field */
p_mb->ppi_dmv[0][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
p_mb->ppi_dmv[0][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] - 1;
/* vector for prediction of bottom field from top field */
p_mb->ppi_dmv[1][0] = ((3*i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
p_mb->ppi_dmv[1][1] = ((3*i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] + 1;
}
else
{
/* vector for prediction of top field from bottom field */
p_mb->ppi_dmv[0][0] = ((3*i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
p_mb->ppi_dmv[0][1] = ((3*i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] - 1;
/* vector for prediction of bottom field from top field */
p_mb->ppi_dmv[1][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
p_mb->ppi_dmv[1][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] + 1;
}
#undef i_mv_y
}
else
{
#define i_mv_y p_mb->pppi_motion_vectors[0][0][1]
/* vector for prediction from field of opposite 'parity' */
p_mb->ppi_dmv[0][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
p_mb->ppi_dmv[0][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1];
/* correct for vertical field shift */
if( p_vpar->picture.i_structure == TOP_FIELD )
p_mb->ppi_dmv[0][1]--;
else
p_mb->ppi_dmv[0][1]++;
#undef i_mv_y
}
#undef i_mv_x
}
}
/*****************************************************************************
* vpar_MPEG1MotionVector : Parse the next MPEG-1 motion vectors
*****************************************************************************/
void vpar_MPEG1MotionVector( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_s )
{
vpar_MotionVector( p_vpar, p_mb, 0, i_s, p_vpar->picture.pb_full_pel_vector[i_s] );
}
/*****************************************************************************
* vpar_MPEG2MotionVector : Parse the next MPEG-2 motion_vectors field
*****************************************************************************/
void vpar_MPEG2MotionVector( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_s )
{
if( p_vpar->mb.i_mv_count == 1 )
{
if( p_vpar->mb.i_mv_format == MOTION_FIELD && !p_vpar->mb.b_dmv )
{
p_mb->ppi_field_select[0][i_s] = p_mb->ppi_field_select[1][i_s]
= GetBits( &p_vpar->bit_stream, 1 );
}
vpar_MotionVector( p_vpar, p_mb, 0, i_s, 0 );
p_vpar->slice.pppi_pmv[1][i_s][0] = p_vpar->slice.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_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][1] = p_vpar->slice.pppi_pmv[0][i_s][1];
}
else
{
p_mb->ppi_field_select[0][i_s] = GetBits( &p_vpar->bit_stream, 1 );
vpar_MotionVector( p_vpar, p_mb, 0, i_s, 0 );
p_mb->ppi_field_select[1][i_s] = GetBits( &p_vpar->bit_stream, 1 );
vpar_MotionVector( p_vpar, p_mb, 1, i_s, 0 );
}
}
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