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|
/*
This program is part of the TACLeBench benchmark suite.
Version V 2.0
Name: h264_dec_ldecode_macroblock.c
Author: Inge Lille-Langoy et al.
Function: H.264 decoder
Source: MediaBench II
http://euler.slu.edu/~fritts/mediabench (mirror)
Original name: h264_dec_ldecode_macroblock.c
Changes: no functional changes
License: see copyright.txt
*/
/*
Include section
*/
#include "extra.h"
#include "h264_dec.h"
/*
Forward declaration of functions
*/
void h264_dec_init ();
int h264_dec_return ();
void h264_dec_decode_one_macroblock( struct h264_dec_img_par *img );
void h264_dec_main( void );
//int main( void );
/*
Declaration of global variables
*/
extern signed char h264_dec_mv_array[65][65][2];
extern short h264_dec_list_imgUV[2][45][45];
extern int h264_dec_img_m7[16][16];
char h264_dec_img_mpr[7][7];
char h264_dec_dec_picture_imgUV[2][64][54];
struct h264_dec_img_par h264_dec_img;
/*
Initialization- and return-value-related functions
*/
int h264_dec_return ()
{
return ( h264_dec_img_mpr[0][0] + h264_dec_dec_picture_imgUV[0][0][0] + 128 !=
0 );
}
void h264_dec_init ()
{
unsigned int i;
unsigned char *p;
volatile char bitmask = 0;
/*
Apply volatile XOR-bitmask to entire input array.
*/
p = ( unsigned char * ) &h264_dec_mv_array[ 0 ];
_Pragma( "loopbound min 33800 max 33800" )
for ( i = 0; i < sizeof( h264_dec_mv_array ); ++i, ++p )
*p ^= bitmask;
p = ( unsigned char * ) &h264_dec_list_imgUV[ 0 ];
_Pragma( "loopbound min 16200 max 16200" )
for ( i = 0; i < sizeof( h264_dec_list_imgUV ); ++i, ++p )
*p ^= bitmask;
p = ( unsigned char * ) &h264_dec_img_m7[ 0 ];
_Pragma( "loopbound min 1024 max 1024" )
for ( i = 0; i < sizeof( h264_dec_img_m7 ); ++i, ++p )
*p ^= bitmask;
h264_dec_img.mb_cr_size_x = 8;
h264_dec_img.mb_cr_size_y = 8;
h264_dec_img.num_blk8x8_uv = 2;
h264_dec_img.pix_c_x = 256;
h264_dec_img.pix_c_y = 256;
h264_dec_img.width_cr = 352;
h264_dec_img.apply_weights = 0;
h264_dec_img.direct_spatial_mv_pred_flag = 1;
h264_dec_img.type = 1;
h264_dec_img.wp_round_chroma = 0;
h264_dec_img.chroma_log2_weight_denom = 0;
}
/*
Algorithm core functions
*/
void h264_dec_decode_one_macroblock( struct h264_dec_img_par *img )
{
int i = 0, j = 0, ii = 0, jj = 0, i1 = 0, j1 = 0, j4 = 0, i4 = 0;
int uv;
int ioff, joff;
int bw_pred = 0, fw_pred = 0, ifx;
int ii0, jj0, ii1, jj1, if1, jf1, if0, jf0;
int f1_x, f1_y, f2_x, f2_y, f3, f4;
short fw_refframe = -1, bw_refframe = -1;
int mv_mode, pred_dir, intra_prediction; // = currMB->ref_frame;
short fw_ref_idx = -1, bw_ref_idx = -1;
int mb_nr = 0;
short dec_picture_ref_idx = 0;
short active_sps_chroma_format_idc = 1;
short active_pps_weighted_pred_flag = 0;
short active_pps_weighted_bipred_idc = 0;
int smb = 0;
int max_y_cr = 287;
int jf;
int direct_pdir = -1;
int curr_mb_field = 0;
int b8, b4;
int residue_transform_flag = 0;
if ( 1 ) {
f1_x = 64 / img->mb_cr_size_x;
f2_x = f1_x - 1;
f1_y = 64 / img->mb_cr_size_y;
f2_y = f1_y - 1;
f3 = f1_x * f1_y;
f4 = f3 >> 1;
_Pragma( "loopbound min 2 max 2" )
for ( uv = 0; uv < 2; uv++ ) {
intra_prediction = 0;
_Pragma( "loopbound min 1 max 1" )
for ( b8 = 0; b8 < ( img->num_blk8x8_uv / 2 ); b8++ ) {
_Pragma( "loopbound min 4 max 4" )
for ( b4 = 0; b4 < 4; b4++ ) {
joff = 0;
j4 = img->pix_c_y + joff;
ioff = 0;
i4 = img->pix_c_x + ioff;
mv_mode = 1;
pred_dir = -1;
if ( !intra_prediction ) {
if ( pred_dir != 2 ) {
_Pragma( "loopbound min 4 max 4" )
for ( jj = 0; jj < 4; jj++ ) {
jf = ( ( j4 + jj ) / ( img->mb_cr_size_y / 4 ) ) % 64;
_Pragma( "loopbound min 4 max 4" )
for ( ii = 0; ii < 4; ii++ ) {
ifx = ( ( i4 + ii ) / ( img->mb_cr_size_x / 4 ) ) % 64;
i1 = ( i4 + ii ) * f1_x + h264_dec_mv_array[jf][ifx][0];
if ( !curr_mb_field )
j1 = ( j4 + jj ) * f1_y + h264_dec_mv_array[jf][ifx][1];
else {
if ( mb_nr % 2 == 0 ) {
j1 = ( ( img->pix_c_y / 2 ) + jj + joff ) * f1_y +
h264_dec_mv_array[jf][ifx][1];
} else {
j1 = ( ( img->pix_c_y - img->mb_cr_size_y ) / 2
+ jj + joff ) * f1_y +
h264_dec_mv_array[jf][ifx][1];
}
++mb_nr;
}
if ( active_sps_chroma_format_idc == 1 )
j1 += 0;
ii0 = ( ( ( 0 < ( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) ) ?
( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) : 0 ) ) % 45;
jj0 = ( ( ( 0 < ( ( j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) ) ?
( ( j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) : 0 ) ) % 45;
ii1 = ( ( ( 0 < (
( ( i1 + f2_x ) / f1_x > img->width_cr - 1 )
? img->width_cr - 1 : ( i1 + f2_x ) / f1_x ) )
? ( ( ( i1 + f2_x ) / f1_x > img->width_cr - 1 )
? img->width_cr - 1 :
( i1 + f2_x ) / f1_x ) : 0 ) ) % 45;
jj1 = ( ( ( 0 < ( ( ( j1 + f2_y ) / f1_y > max_y_cr )
? max_y_cr : ( j1 + f2_y ) / f1_y ) ) ?
( ( ( j1 + f2_y ) / f1_y > max_y_cr ) ?
max_y_cr : ( j1 + f2_y ) / f1_y ) : 0 ) ) % 45;
if1 = ( i1 & f2_x );
jf1 = ( j1 & f2_y );
if0 = f1_x - if1;
jf0 = f1_y - jf1;
if ( img->apply_weights ) {
} else {
h264_dec_img_mpr[ii + ioff][jj + joff]
= ( if0 * jf0 * h264_dec_list_imgUV[uv][jj0][ii0]
+ if1 * jf0 * h264_dec_list_imgUV[uv][jj0][ii1]
+ if0 * jf1 * h264_dec_list_imgUV[uv][jj1][ii0]
+ if1 * jf1 * h264_dec_list_imgUV[uv][jj1][ii1]
+ f4 ) / f3;
}
}
}
} else {
_Pragma( "loopbound min 4 max 4" )
for ( jj = 0; jj < 4; jj++ ) {
jf = ( j4 + jj ) / ( img->mb_cr_size_y / 4 );
_Pragma( "loopbound min 4 max 4" )
for ( ii = 0; ii < 4; ii++ ) {
ifx = ( i4 + ii ) / ( img->mb_cr_size_x / 4 );
direct_pdir = 2;
if ( mv_mode == 0 && img->direct_spatial_mv_pred_flag ) {
if ( dec_picture_ref_idx != -1 ) {
fw_refframe = 0;
fw_ref_idx = fw_refframe;
}
if ( dec_picture_ref_idx != -1 ) {
bw_refframe = 0;
bw_ref_idx = bw_refframe;
}
if ( dec_picture_ref_idx == -1 ) direct_pdir = 0;
else
if ( dec_picture_ref_idx == -1 ) direct_pdir = 1;
if ( direct_pdir == 0 || direct_pdir == 2 ) {
i1 = ( img->pix_c_x + ii + ioff ) * f1_x +
h264_dec_mv_array[jf][ifx][0];
if ( !curr_mb_field ) {
j1 = ( img->pix_c_y + jj + joff ) * f1_y +
h264_dec_mv_array[jf][ifx][1];
} else {
if ( mb_nr % 2 == 0 ) {
j1 = ( ( img->pix_c_y ) / 2 + jj + joff ) *
f1_y + h264_dec_mv_array[jf][ifx][1];
} else {
j1 = ( ( img->pix_c_y - img->mb_cr_size_y )
/ 2 + jj + joff ) * f1_y
+ h264_dec_mv_array[jf][ifx][1];
}
}
if ( active_sps_chroma_format_idc == 1 )
j1 += 0;
ii0 = ( (
( 0 < ( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) ) ?
( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) : 0 ) ) % 45;
jj0 = ( (
( 0 < ( ( j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) ) ? ( (
j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) : 0 )
) % 45;
ii1 = ( ( ( 0 < ( ( ( i1 + f2_x ) /
f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 :
( i1 + f2_x ) / f1_x ) ) ?
( ( ( i1 + f2_x ) / f1_x > img->width_cr - 1 )
? img->width_cr - 1 :
( i1 + f2_x ) / f1_x ) : 0 ) ) % 45;
jj1 = ( ( ( 0 < ( ( ( j1 + f2_y ) / f1_y > max_y_cr ) ?
max_y_cr : ( j1 + f2_y ) / f1_y ) ) ?
( ( ( j1 + f2_y ) / f1_y > max_y_cr ) ?
max_y_cr : ( j1 + f2_y ) / f1_y ) : 0 )
) % 45;
if1 = ( i1 & f2_x );
jf1 = ( j1 & f2_y );
if0 = f1_x - if1;
jf0 = f1_y - jf1;
fw_pred = ( if0 * jf0 *
h264_dec_list_imgUV[uv][jj0][ii0] +
if1 * jf0 *
h264_dec_list_imgUV[uv][jj0][ii1] +
if0 * jf1 *
h264_dec_list_imgUV[uv][jj1][ii0] +
if1 * jf1 *
h264_dec_list_imgUV[uv][jj1][ii1] +
f4 ) / f3;
}
if ( direct_pdir == 1 || direct_pdir == 2 ) {
i1 = ( img->pix_c_x + ii + ioff ) * f1_x +
h264_dec_mv_array[jf][ifx][0];
if ( !curr_mb_field ) {
j1 = ( img->pix_c_y + jj + joff ) * f1_y +
h264_dec_mv_array[jf][ifx][1];
} else {
if ( mb_nr % 2 == 0 ) {
j1 = ( ( img->pix_c_y ) / 2 + jj + joff ) * f1_y
+ h264_dec_mv_array[jf][ifx][1];
} else {
j1 = ( ( img->pix_c_y - img->mb_cr_size_y ) / 2
+ jj + joff ) * f1_y
+ h264_dec_mv_array[jf][ifx][1];
}
}
if ( active_sps_chroma_format_idc == 1 )
j1 += 0;
ii0 = ( ( ( 0 < ( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) ) ?
( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) : 0 ) ) % 45;
jj0 = ( ( ( 0 < ( ( j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) ) ?
( ( j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) : 0 ) ) % 45;
ii1 = ( ( ( 0 < ( ( ( i1 + f2_x ) /
f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 :
( i1 + f2_x ) / f1_x ) ) ?
( ( ( i1 + f2_x ) / f1_x > img->width_cr - 1 )
? img->width_cr - 1 :
( i1 + f2_x ) / f1_x ) : 0 ) ) % 45;
jj1 = ( ( ( 0 < ( ( ( j1 + f2_y ) / f1_y > max_y_cr ) ?
max_y_cr : ( j1 + f2_y ) / f1_y ) ) ?
( ( ( j1 + f2_y ) / f1_y > max_y_cr ) ?
max_y_cr : ( j1 + f2_y ) / f1_y ) : 0 ) )
% 45;
if1 = ( i1 & f2_x );
jf1 = ( j1 & f2_y );
if0 = f1_x - if1;
jf0 = f1_y - jf1;
bw_pred = ( if0 * jf0 *
h264_dec_list_imgUV[uv][jj0][ii0] +
if1 * jf0 *
h264_dec_list_imgUV[uv][jj0][ii1] +
if0 * jf1 *
h264_dec_list_imgUV[uv][jj1][ii0] +
if1 * jf1 *
h264_dec_list_imgUV[uv][jj1][ii1] +
f4 ) / f3;
}
} else {
fw_refframe = 0;
bw_refframe = 0;
fw_ref_idx = fw_refframe;
bw_ref_idx = bw_refframe;
i1 = ( img->pix_c_x + ii + ioff ) * f1_x +
h264_dec_mv_array[jf][ifx][0];
if ( !curr_mb_field ) {
j1 = ( img->pix_c_y + jj + joff ) * f1_y +
h264_dec_mv_array[jf][ifx][1];
} else {
if ( mb_nr % 2 == 0 ) {
j1 = ( ( img->pix_c_y ) / 2 + jj + joff ) * f1_y +
h264_dec_mv_array[jf][ifx][1];
} else {
j1 = ( ( img->pix_c_y - img->mb_cr_size_y ) / 2
+ jj + joff ) * f1_y
+ h264_dec_mv_array[jf][ifx][1];
}
}
if ( active_sps_chroma_format_idc == 1 )
j1 += 0;
ii0 = ( ( ( 0 < ( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) ) ?
( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) : 0 ) )
% 45;
jj0 = ( ( ( 0 < ( ( j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) ) ?
( ( j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) : 0 ) ) % 45;
ii1 = ( ( ( 0 < ( ( ( i1 + f2_x ) /
f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 :
( i1 + f2_x ) / f1_x ) ) ?
( ( ( i1 + f2_x ) / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 :
( i1 + f2_x ) / f1_x ) : 0 ) ) % 45;
jj1 = ( ( ( 0 < ( ( ( j1 + f2_y ) / f1_y > max_y_cr ) ?
max_y_cr : ( j1 + f2_y ) / f1_y ) ) ?
( ( ( j1 + f2_y ) / f1_y > max_y_cr ) ?
max_y_cr :
( j1 + f2_y ) / f1_y ) : 0 ) ) % 45;
if1 = ( i1 & f2_x );
jf1 = ( j1 & f2_y );
if0 = f1_x - if1;
jf0 = f1_y - jf1;
fw_pred = ( if0 * jf0 * h264_dec_list_imgUV[uv][jj0][ii0] +
if1 * jf0 * h264_dec_list_imgUV[uv][jj0][ii1] +
if0 * jf1 * h264_dec_list_imgUV[uv][jj1][ii0] +
if1 * jf1 * h264_dec_list_imgUV[uv][jj1][ii1] +
f4 ) / f3;
i1 = ( img->pix_c_x + ii + ioff ) * f1_x +
h264_dec_mv_array[jf][ifx][0];
if ( !curr_mb_field ) {
j1 = ( img->pix_c_y + jj + joff ) * f1_y +
h264_dec_mv_array[jf][ifx][1];
} else {
if ( mb_nr % 2 == 0 ) {
j1 = ( ( img->pix_c_y ) / 2 + jj + joff ) * f1_y
+ h264_dec_mv_array[jf][ifx][1];
} else {
j1 = ( ( img->pix_c_y - img->mb_cr_size_y ) / 2 + jj
+ joff ) * f1_y
+ h264_dec_mv_array[jf][ifx][1];
}
}
if ( active_sps_chroma_format_idc == 1 )
j1 += 0;
ii0 = ( ( ( 0 < ( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) ) ?
( ( i1 / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 : i1 / f1_x ) : 0 ) ) % 45;
jj0 = ( ( ( 0 < ( ( j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) ) ?
( ( j1 / f1_y > max_y_cr ) ?
max_y_cr : j1 / f1_y ) : 0 ) ) % 45;
ii1 = ( ( ( 0 < ( ( ( i1 + f2_x ) /
f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 :
( i1 + f2_x ) / f1_x ) ) ?
( ( ( i1 + f2_x ) / f1_x > img->width_cr - 1 ) ?
img->width_cr - 1 :
( i1 + f2_x ) / f1_x ) : 0 ) ) % 45;
jj1 = ( ( ( 0 < ( ( ( j1 + f2_y ) / f1_y > max_y_cr ) ?
max_y_cr : ( j1 + f2_y ) / f1_y ) ) ?
( ( ( j1 + f2_y ) / f1_y > max_y_cr ) ?
max_y_cr : ( j1 + f2_y ) / f1_y ) : 0 ) ) % 45;
if1 = ( i1 & f2_x );
jf1 = ( j1 & f2_y );
if0 = f1_x - if1;
jf0 = f1_y - jf1;
bw_pred = ( if0 * jf0 * h264_dec_list_imgUV[uv][jj0][ii0] +
if1 * jf0 * h264_dec_list_imgUV[uv][jj0][ii1] +
if0 * jf1 * h264_dec_list_imgUV[uv][jj1][ii0] +
if1 * jf1 * h264_dec_list_imgUV[uv][jj1][ii1] +
f4 ) / f3;
}
if ( img->apply_weights ) {
if ( ( ( active_pps_weighted_pred_flag &&
( img->type == P_SLICE || img->type == SP_SLICE ) )
|| ( active_pps_weighted_bipred_idc == 1 &&
( img->type == B_SLICE ) ) )
&& curr_mb_field ) {
fw_ref_idx >>= 1;
bw_ref_idx >>= 1;
}
if ( img->direct_spatial_mv_pred_flag
&& direct_pdir == 1 ) {
img->mpr[ii + ioff][jj + joff] =
( ( ( img->wp_round_chroma ) >>
img->chroma_log2_weight_denom ) < 0 ? 0 :
( ( img->wp_round_chroma ) >>
img->chroma_log2_weight_denom ) ) + 0;
} else
if ( img->direct_spatial_mv_pred_flag
&& direct_pdir == 0 ) {
img->mpr[ii + ioff][jj + joff] =
( ( ( ( img->wp_round_chroma ) >>
img->chroma_log2_weight_denom ) ) < 0 ?
0 :
( ( ( img->wp_round_chroma ) >>
img->chroma_log2_weight_denom ) ) ) ;
} else {
int alpha_fw = 0;
int alpha_bw = 0;
img->mpr[ii + ioff][jj + joff] =
( ( ( alpha_fw * fw_pred + alpha_bw *
bw_pred +
( 1 << img->chroma_log2_weight_denom ) ) >> (
img->chroma_log2_weight_denom + 1 ) ) < 0 ?
0 : ( ( alpha_fw * fw_pred + alpha_bw *
bw_pred +
( 1 << img->chroma_log2_weight_denom ) ) >>
( img->chroma_log2_weight_denom + 1 ) ) );
}
} else {
if ( img->direct_spatial_mv_pred_flag
&& direct_pdir == 1 )
img->mpr[ii + ioff][jj + joff] = bw_pred;
else
if ( img->direct_spatial_mv_pred_flag
&& direct_pdir == 0 )
img->mpr[ii + ioff][jj + joff] = fw_pred;
else {
img->mpr[ii + ioff][jj + joff] = ( fw_pred + bw_pred
+
1 ) / 2;
}
}
}
}
}
}
if ( !smb ) {
_Pragma( "loopbound min 4 max 4" )
for ( ii = 0; ii < 4; ii++ ) {
jj = 0;
_Pragma( "loopbound min 4 max 4" )
for ( ; jj < 4; jj++ ) {
if ( !residue_transform_flag ) {
h264_dec_dec_picture_imgUV[uv][( j4 + jj ) % 64]
[( i4 + ii ) % 54]
= h264_dec_img_m7[ii][jj];
}
}
}
}
}
}
if ( smb ) {
_Pragma( "loopbound min 2 max 2" )
for ( j = 4; j < 6; j++ ) {
joff = ( j - 4 ) * 4;
j4 = img->pix_c_y + joff;
_Pragma( "loopbound min 2 max 2" )
for ( i = 0; i < 2; i++ ) {
ioff = i * 4;
i4 = img->pix_c_x + ioff;
_Pragma( "loopbound min 4 max 4" )
for ( ii = 0; ii < 4; ii++ )
_Pragma( "loopbound min 4 max 4" )
for ( jj = 0; jj < 4; jj++ ) {
h264_dec_dec_picture_imgUV[uv][( j4 + jj ) % 64]
[( i4 + ii ) % 54]
= h264_dec_img_m7[ii][jj];
}
}
}
}
}
}
}
/*
Main functions
*/
void _Pragma( "entrypoint" ) h264_dec_main( void )
{
h264_dec_decode_one_macroblock( &h264_dec_img );
}
int main( int argc, char** argv )
{
SET_UP
for (jobsComplete=0; jobsComplete<maxJobs; jobsComplete++){
START_LOOP
h264_dec_init();
h264_dec_main();
STOP_LOOP
}
WRITE_TO_FILE
return ( h264_dec_return() );
}
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