/**
* Intra picture MB layer bitstream encoder
* @param s Mpeg encoder context
* @param block macroblock to encode
*/
void vc1_intra_picture_encode_mb(MpegEncContext * s, DCTELEM block[6][64])
{
int cbp, coded_cbp, i;
uint8_t *coded_block;
/* compute cbp */
cbp = 0;
coded_cbp = 0;
for (i = 0; i < 6; i++) {
int val, pred;
val = (s->block_last_index[i] >= 1);
cbp |= val << (5 - i);
if (i < 4) {
/* predict value for close blocks only for luma */
pred = vc1_coded_block_pred(s, i, &coded_block);
*coded_block = val;
val = val ^ pred;
}
coded_cbp |= val << (5 - i);
}
put_bits(&s->pb,ff_msmp4_mb_i_table[coded_cbp][1],
ff_msmp4_mb_i_table[coded_cbp][0]);//CBPCY
//predict dc_val and dc_direction for each block
//brute force test to switch ACPRED on/off
put_bits(&s->pb,1,0);//ACPRED
for (i = 0; i < 6; i++)
ff_msmpeg4_encode_block(s, block[i], i);
s->i_tex_bits += get_bits_diff(s);
s->i_count++;
}
/* Nearly identical to wmv1 but that is just because we do not use the
* useless M$ crap features. It is duplicated here in case someone wants
* to add support for these crap features. */
void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64],
int motion_x, int motion_y)
{
Wmv2Context *const w = (Wmv2Context *) s;
int cbp, coded_cbp, i;
int pred_x, pred_y;
uint8_t *coded_block;
ff_msmpeg4_handle_slices(s);
if (!s->mb_intra) {
/* compute cbp */
cbp = 0;
for (i = 0; i < 6; i++)
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
put_bits(&s->pb,
ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
s->misc_bits += get_bits_diff(s);
/* motion vector */
ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
ff_msmpeg4_encode_motion(s, motion_x - pred_x,
motion_y - pred_y);
s->mv_bits += get_bits_diff(s);
} else {
/* compute cbp */
cbp = 0;
coded_cbp = 0;
for (i = 0; i < 6; i++) {
int val, pred;
val = (s->block_last_index[i] >= 1);
cbp |= val << (5 - i);
if (i < 4) {
/* predict value for close blocks only for luma */
pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
*coded_block = val;
val = val ^ pred;
}
coded_cbp |= val << (5 - i);
}
if (s->pict_type == AV_PICTURE_TYPE_I)
put_bits(&s->pb,
ff_msmp4_mb_i_table[coded_cbp][1],
ff_msmp4_mb_i_table[coded_cbp][0]);
else
put_bits(&s->pb,
ff_wmv2_inter_table[w->cbp_table_index][cbp][1],
ff_wmv2_inter_table[w->cbp_table_index][cbp][0]);
put_bits(&s->pb, 1, 0); /* no AC prediction yet */
if (s->inter_intra_pred) {
s->h263_aic_dir = 0;
put_bits(&s->pb,
ff_table_inter_intra[s->h263_aic_dir][1],
ff_table_inter_intra[s->h263_aic_dir][0]);
}
s->misc_bits += get_bits_diff(s);
}
for (i = 0; i < 6; i++)
ff_msmpeg4_encode_block(s, block[i], i);
if (s->mb_intra)
s->i_tex_bits += get_bits_diff(s);
else
s->p_tex_bits += get_bits_diff(s);
}
/* Nearly identical to wmv1 but that is just because we do not use the
* useless M$ crap features. It is duplicated here in case someone wants
* to add support for these crap features. */
void ff_wmv2_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y)
{
Wmv2Context * const w= (Wmv2Context*)s;
int cbp, coded_cbp, i;
int pred_x, pred_y;
uint8_t *coded_block;
ff_msmpeg4_handle_slices(s);
if (!s->mb_intra) {
/* compute cbp */
cbp = 0;
for (i = 0; i < 6; i++) {
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
}
put_bits(&s->pb,
wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
/* motion vector */
h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
ff_msmpeg4_encode_motion(s, motion_x - pred_x,
motion_y - pred_y);
} else {
/* compute cbp */
cbp = 0;
coded_cbp = 0;
for (i = 0; i < 6; i++) {
int val, pred;
val = (s->block_last_index[i] >= 1);
cbp |= val << (5 - i);
if (i < 4) {
/* predict value for close blocks only for luma */
pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
*coded_block = val;
val = val ^ pred;
}
coded_cbp |= val << (5 - i);
}
#if 0
if (coded_cbp)
printf("cbp=%x %x\n", cbp, coded_cbp);
#endif
if (s->pict_type == FF_I_TYPE) {
put_bits(&s->pb,
ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
} else {
put_bits(&s->pb,
wmv2_inter_table[w->cbp_table_index][cbp][1],
wmv2_inter_table[w->cbp_table_index][cbp][0]);
}
put_bits(&s->pb, 1, 0); /* no AC prediction yet */
if(s->inter_intra_pred){
s->h263_aic_dir=0;
put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
}
}
for (i = 0; i < 6; i++) {
ff_msmpeg4_encode_block(s, block[i], i);
}
}