static void clamp_mv_to_umv_border(MV mv, MACROBLOCKD xd)
{
/* If the MV points so far into the UMV border that no visible pixels
* are used for reconstruction, the subpel part of the MV can be
* discarded and the MV limited to 16 pixels with equivalent results.
*
* This limit kicks in at 19 pixels for the top and left edges, for
* the 16 pixels plus 3 taps right of the central pixel when subpel
* filtering. The bottom and right edges use 16 pixels plus 2 pixels
* left of the central pixel when filtering.
*/
checked
{
if (mv.col < (xd.mb_to_left_edge - (19 << 3)))
{
mv.col = (short)(xd.mb_to_left_edge - (16 << 3));
}
else if (mv.col > xd.mb_to_right_edge + (18 << 3))
{
mv.col = (short)(xd.mb_to_right_edge + (16 << 3));
}
if (mv.row < (xd.mb_to_top_edge - (19 << 3)))
{
mv.row = (short)(xd.mb_to_top_edge - (16 << 3));
}
else if (mv.row > xd.mb_to_bottom_edge + (18 << 3))
{
mv.row = (short)(xd.mb_to_bottom_edge + (16 << 3));
}
}
}
public static void vp8_build_inter_predictors_mb(MACROBLOCKD xd)
{
if (xd.mode_info_context.get().mbmi.mode != (byte)MB_PREDICTION_MODE.SPLITMV)
{
vp8_build_inter16x16_predictors_mb(xd, xd.dst.y_buffer, xd.dst.u_buffer,
xd.dst.v_buffer, xd.dst.y_stride,
xd.dst.uv_stride);
}
else
{
build_4x4uvmvs(xd);
build_inter4x4_predictors_mb(xd);
}
}
public static void vp8_build_block_doffsets(MACROBLOCKD x)
{
int block;
for (block = 0; block < 16; ++block) /* y blocks */
{
x.block[block].offset =
(block >> 2) * 4 * x.dst.y_stride + (block & 3) * 4;
}
for (block = 16; block < 20; ++block) /* U and V blocks */
{
x.block[block + 4].offset = x.block[block].offset =
((block - 16) >> 1) * 4 * x.dst.uv_stride + (block & 1) * 4;
}
}
static void build_4x4uvmvs(MACROBLOCKD x)
{
int i, j;
checked
{
for (i = 0; i < 2; ++i)
{
for (j = 0; j < 2; ++j)
{
int yoffset = i * 8 + j * 2;
int uoffset = 16 + i * 2 + j;
int voffset = 20 + i * 2 + j;
int temp;
temp = x.mode_info_context.get().bmi[yoffset + 0].mv.as_mv.row +
x.mode_info_context.get().bmi[yoffset + 1].mv.as_mv.row +
x.mode_info_context.get().bmi[yoffset + 4].mv.as_mv.row +
x.mode_info_context.get().bmi[yoffset + 5].mv.as_mv.row;
temp += 4 + ((temp >> (sizeof(int) * CHAR_BIT - 1)) * 8);
x.block[uoffset].bmi.mv.as_mv.row = (short)((temp / 8) & x.fullpixel_mask);
temp = x.mode_info_context.get().bmi[yoffset + 0].mv.as_mv.col +
x.mode_info_context.get().bmi[yoffset + 1].mv.as_mv.col +
x.mode_info_context.get().bmi[yoffset + 4].mv.as_mv.col +
x.mode_info_context.get().bmi[yoffset + 5].mv.as_mv.col;
temp += 4 + ((temp >> (sizeof(int) * CHAR_BIT - 1)) * 8);
x.block[uoffset].bmi.mv.as_mv.col = (short)((temp / 8) & x.fullpixel_mask);
if (x.mode_info_context.get().mbmi.need_to_clamp_mvs > 0)
{
clamp_uvmv_to_umv_border(x.block[uoffset].bmi.mv.as_mv, x);
}
x.block[voffset].bmi.mv.as_int = x.block[uoffset].bmi.mv.as_int;
}
}
}
}
/* A version of the above function for chroma block MVs.*/
static void clamp_uvmv_to_umv_border(MV mv, MACROBLOCKD xd)
{
checked
{
mv.col = (short)((2 * mv.col < (xd.mb_to_left_edge - (19 << 3)))
? (xd.mb_to_left_edge - (16 << 3)) >> 1
: mv.col);
mv.col = (short)((2 * mv.col > xd.mb_to_right_edge + (18 << 3))
? (xd.mb_to_right_edge + (16 << 3)) >> 1
: mv.col);
mv.row = (short)((2 * mv.row < (xd.mb_to_top_edge - (19 << 3)))
? (xd.mb_to_top_edge - (16 << 3)) >> 1
: mv.row);
mv.row = (short)((2 * mv.row > xd.mb_to_bottom_edge + (18 << 3))
? (xd.mb_to_bottom_edge + (16 << 3)) >> 1
: mv.row);
}
}
static void build_inter_predictors2b(MACROBLOCKD x, BLOCKD d,
byte *dst, int dst_stride,
byte *base_pre, int pre_stride)
{
byte *ptr;
ptr = base_pre + d.offset + (d.bmi.mv.as_mv.row >> 3) * pre_stride +
(d.bmi.mv.as_mv.col >> 3);
if ((d.bmi.mv.as_mv.row & 7) > 0 || (d.bmi.mv.as_mv.col & 7) > 0)
{
x.subpixel_predict8x4(ptr, pre_stride, d.bmi.mv.as_mv.col & 7,
d.bmi.mv.as_mv.row & 7, dst, dst_stride);
}
else
{
vp8_rtcd.vp8_copy_mem8x4(ptr, pre_stride, dst, dst_stride);
}
}
public unsafe static void vp8_setup_block_dptrs(MACROBLOCKD x)
{
int r, c;
for (r = 0; r < 4; ++r)
{
for (c = 0; c < 4; ++c)
{
//x.block[r * 4 + c].predictor = x.predictor + r * 4 * 16 + c * 4;
x.block[r * 4 + c].predictor = new ArrPtr <byte>(x.predictor, r * 4 * 16 + c * 4);
}
}
for (r = 0; r < 2; ++r)
{
for (c = 0; c < 2; ++c)
{
//x.block[16 + r * 2 + c].predictor = x.predictor + 256 + r * 4 * 8 + c * 4;
x.block[16 + r * 2 + c].predictor = new ArrPtr <byte>(x.predictor, 256 + r * 4 * 8 + c * 4);
}
}
for (r = 0; r < 2; ++r)
{
for (c = 0; c < 2; ++c)
{
//x.block[20 + r * 2 + c].predictor = x.predictor + 320 + r * 4 * 8 + c * 4;
x.block[20 + r * 2 + c].predictor = new ArrPtr <byte>(x.predictor, 320 + r * 4 * 8 + c * 4);
}
}
for (r = 0; r < 25; ++r)
{
//x.block[r].qcoeff = x.qcoeff + r * 16;
x.block[r].qcoeff = new ArrPtr <short>(x.qcoeff, r * 16);
//x.block[r].dqcoeff = x.dqcoeff + r * 16;
x.block[r].dqcoeff = new ArrPtr <short>(x.dqcoeff, r * 16);
//x.block[r].eob = x.eobs + r;
x.block[r].eob = new ArrPtr <sbyte>(x.eobs, r);
}
}
static void build_inter4x4_predictors_mb(MACROBLOCKD x)
{
int i;
byte *base_dst = x.dst.y_buffer;
byte *base_pre = x.pre.y_buffer;
if (x.mode_info_context.get().mbmi.partitioning < 3)
{
BLOCKD b;
int dst_stride = x.dst.y_stride;
x.block[0].bmi = x.mode_info_context.get().bmi[0];
x.block[2].bmi = x.mode_info_context.get().bmi[2];
x.block[8].bmi = x.mode_info_context.get().bmi[8];
x.block[10].bmi = x.mode_info_context.get().bmi[10];
if (x.mode_info_context.get().mbmi.need_to_clamp_mvs > 0)
{
clamp_mv_to_umv_border(x.block[0].bmi.mv.as_mv, x);
clamp_mv_to_umv_border(x.block[2].bmi.mv.as_mv, x);
clamp_mv_to_umv_border(x.block[8].bmi.mv.as_mv, x);
clamp_mv_to_umv_border(x.block[10].bmi.mv.as_mv, x);
}
b = x.block[0];
build_inter_predictors4b(x, b, base_dst + b.offset, dst_stride, base_pre,
dst_stride);
b = x.block[2];
build_inter_predictors4b(x, b, base_dst + b.offset, dst_stride, base_pre,
dst_stride);
b = x.block[8];
build_inter_predictors4b(x, b, base_dst + b.offset, dst_stride, base_pre,
dst_stride);
b = x.block[10];
build_inter_predictors4b(x, b, base_dst + b.offset, dst_stride, base_pre,
dst_stride);
}
else
{
for (i = 0; i < 16; i += 2)
{
BLOCKD d0 = x.block[i];
BLOCKD d1 = x.block[i + 1];
int dst_stride = x.dst.y_stride;
x.block[i + 0].bmi = x.mode_info_context.get().bmi[i + 0];
x.block[i + 1].bmi = x.mode_info_context.get().bmi[i + 1];
if (x.mode_info_context.get().mbmi.need_to_clamp_mvs > 0)
{
clamp_mv_to_umv_border(x.block[i + 0].bmi.mv.as_mv, x);
clamp_mv_to_umv_border(x.block[i + 1].bmi.mv.as_mv, x);
}
if (d0.bmi.mv.as_int == d1.bmi.mv.as_int)
{
build_inter_predictors2b(x, d0, base_dst + d0.offset, dst_stride,
base_pre, dst_stride);
}
else
{
build_inter_predictors_b(d0, base_dst + d0.offset, dst_stride,
base_pre, dst_stride, x.subpixel_predict);
build_inter_predictors_b(d1, base_dst + d1.offset, dst_stride,
base_pre, dst_stride, x.subpixel_predict);
}
}
}
base_dst = x.dst.u_buffer;
base_pre = x.pre.u_buffer;
for (i = 16; i < 20; i += 2)
{
BLOCKD d0 = x.block[i];
BLOCKD d1 = x.block[i + 1];
int dst_stride = x.dst.uv_stride;
/* Note: uv mvs already clamped in build_4x4uvmvs() */
if (d0.bmi.mv.as_int == d1.bmi.mv.as_int)
{
build_inter_predictors2b(x, d0, base_dst + d0.offset, dst_stride,
base_pre, dst_stride);
}
else
{
build_inter_predictors_b(d0, base_dst + d0.offset, dst_stride, base_pre,
dst_stride, x.subpixel_predict);
build_inter_predictors_b(d1, base_dst + d1.offset, dst_stride, base_pre,
dst_stride, x.subpixel_predict);
}
}
base_dst = x.dst.v_buffer;
base_pre = x.pre.v_buffer;
for (i = 20; i < 24; i += 2)
{
BLOCKD d0 = x.block[i];
BLOCKD d1 = x.block[i + 1];
int dst_stride = x.dst.uv_stride;
/* Note: uv mvs already clamped in build_4x4uvmvs() */
if (d0.bmi.mv.as_int == d1.bmi.mv.as_int)
{
build_inter_predictors2b(x, d0, base_dst + d0.offset, dst_stride,
base_pre, dst_stride);
}
else
{
build_inter_predictors_b(d0, base_dst + d0.offset, dst_stride, base_pre,
dst_stride, x.subpixel_predict);
build_inter_predictors_b(d1, base_dst + d1.offset, dst_stride, base_pre,
dst_stride, x.subpixel_predict);
}
}
}
static void vp8_build_inter16x16_predictors_mb(MACROBLOCKD x, byte *dst_y,
byte *dst_u,
byte *dst_v, int dst_ystride,
int dst_uvstride)
{
int offset;
byte *ptr;
byte *uptr, vptr;
int_mv _16x16mv = new int_mv();
byte *ptr_base = x.pre.y_buffer;
int pre_stride = x.pre.y_stride;
_16x16mv.as_int = x.mode_info_context.get().mbmi.mv.as_int;
if (x.mode_info_context.get().mbmi.need_to_clamp_mvs > 0)
{
clamp_mv_to_umv_border(_16x16mv.as_mv, x);
}
ptr = ptr_base + (_16x16mv.as_mv.row >> 3) * pre_stride +
(_16x16mv.as_mv.col >> 3);
if ((_16x16mv.as_int & 0x00070007) > 0)
{
x.subpixel_predict16x16(ptr, pre_stride, _16x16mv.as_mv.col & 7,
_16x16mv.as_mv.row & 7, dst_y, dst_ystride);
}
else
{
vp8_rtcd.vp8_copy_mem16x16(ptr, pre_stride, dst_y, dst_ystride);
}
/* calc uv motion vectors */
_16x16mv.as_mv.row += (short)
(1 | (_16x16mv.as_mv.row >> (sizeof(int) * CHAR_BIT - 1)));
_16x16mv.as_mv.col += (short)
(1 | (_16x16mv.as_mv.col >> (sizeof(int) * CHAR_BIT - 1)));
_16x16mv.as_mv.row /= 2;
_16x16mv.as_mv.col /= 2;
_16x16mv.as_mv.row &= (short)x.fullpixel_mask;
_16x16mv.as_mv.col &= (short)x.fullpixel_mask;
if (2 * _16x16mv.as_mv.col < (x.mb_to_left_edge - (19 << 3)) ||
2 * _16x16mv.as_mv.col > x.mb_to_right_edge + (18 << 3) ||
2 * _16x16mv.as_mv.row < (x.mb_to_top_edge - (19 << 3)) ||
2 * _16x16mv.as_mv.row > x.mb_to_bottom_edge + (18 << 3))
{
return;
}
pre_stride >>= 1;
offset = (_16x16mv.as_mv.row >> 3) * pre_stride + (_16x16mv.as_mv.col >> 3);
uptr = x.pre.u_buffer + offset;
vptr = x.pre.v_buffer + offset;
if ((_16x16mv.as_int & 0x00070007) > 0)
{
x.subpixel_predict8x8(uptr, pre_stride, _16x16mv.as_mv.col & 7,
_16x16mv.as_mv.row & 7, dst_u, dst_uvstride);
x.subpixel_predict8x8(vptr, pre_stride, _16x16mv.as_mv.col & 7,
_16x16mv.as_mv.row & 7, dst_v, dst_uvstride);
}
else
{
vp8_rtcd.vp8_copy_mem8x8(uptr, pre_stride, dst_u, dst_uvstride);
vp8_rtcd.vp8_copy_mem8x8(vptr, pre_stride, dst_v, dst_uvstride);
}
}
public static void vp8_loop_filter_frame_init(VP8_COMMON cm, MACROBLOCKD mbd, int default_filt_lvl)
{
int seg, /* segment number */
@ref, /* index in ref_lf_deltas */
mode; /* index in mode_lf_deltas */
loop_filter_info_n lfi = cm.lf_info;
/* update limits if sharpness has changed */
if (cm.last_sharpness_level != cm.sharpness_level)
{
vp8_loop_filter_update_sharpness(lfi, cm.sharpness_level);
cm.last_sharpness_level = cm.sharpness_level;
}
for (seg = 0; seg < blockd.MAX_MB_SEGMENTS; ++seg)
{
int lvl_seg = default_filt_lvl;
int lvl_ref, lvl_mode;
/* Note the baseline filter values for each segment */
if (mbd.segmentation_enabled > 0)
{
if (mbd.mb_segement_abs_delta == blockd.SEGMENT_ABSDATA)
{
lvl_seg = mbd.segment_feature_data[(int)MB_LVL_FEATURES.MB_LVL_ALT_LF, seg];
}
else
{ /* Delta Value */
lvl_seg += mbd.segment_feature_data[(int)MB_LVL_FEATURES.MB_LVL_ALT_LF, seg];
}
lvl_seg = (lvl_seg > 0) ? ((lvl_seg > 63) ? 63 : lvl_seg) : 0;
}
if (mbd.mode_ref_lf_delta_enabled == 0)
{
/* we could get rid of this if we assume that deltas are set to
* zero when not in use; encoder always uses deltas
*/
//memset(lfi->lvl[seg][0], lvl_seg, 4 * 4);
fixed(byte *plfi = lfi.lvl)
{
byte *pseg = plfi + seg * lfi.lvl.GetLength(1);
for (int i = 0; i < 4 * 4; i++)
{
*pseg++ = (byte)lvl_seg;
}
}
continue;
}
/* INTRA_FRAME */
@ref = (int)MV_REFERENCE_FRAME.INTRA_FRAME;
/* Apply delta for reference frame */
lvl_ref = lvl_seg + mbd.ref_lf_deltas[@ref];
/* Apply delta for Intra modes */
mode = 0; /* B_PRED */
/* Only the split mode BPRED has a further special case */
lvl_mode = lvl_ref + mbd.mode_lf_deltas[mode];
/* clamp */
lvl_mode = (lvl_mode > 0) ? (lvl_mode > 63 ? 63 : lvl_mode) : 0;
lfi.lvl[seg, @ref, mode] = (byte)lvl_mode;
mode = 1; /* all the rest of Intra modes */
/* clamp */
lvl_mode = (lvl_ref > 0) ? (lvl_ref > 63 ? 63 : lvl_ref) : 0;
lfi.lvl[seg, @ref, mode] = (byte)lvl_mode;
/* LAST, GOLDEN, ALT */
for (@ref = 1; @ref < (int)MV_REFERENCE_FRAME.MAX_REF_FRAMES; ++@ref)
{
/* Apply delta for reference frame */
lvl_ref = lvl_seg + mbd.ref_lf_deltas[@ref];
/* Apply delta for Inter modes */
for (mode = 1; mode < 4; ++mode)
{
lvl_mode = lvl_ref + mbd.mode_lf_deltas[mode];
/* clamp */
lvl_mode = (lvl_mode > 0) ? (lvl_mode > 63 ? 63 : lvl_mode) : 0;
lfi.lvl[seg, @ref, mode] = (byte)lvl_mode;
}
}
}
}
