private static void vp8_loop_filter_update_sharpness(loop_filter_info_n lfi,
int sharpness_lvl)
{
int i;
/* For each possible value for the loop filter fill out limits */
for (i = 0; i <= loopfilter.MAX_LOOP_FILTER; ++i)
{
int filt_lvl = i;
int block_inside_limit = 0;
/* Set loop filter paramaeters that control sharpness. */
block_inside_limit = filt_lvl >> ((sharpness_lvl > 0) ? 1 : 0);
block_inside_limit = block_inside_limit >> ((sharpness_lvl > 4) ? 1 : 0);
if (sharpness_lvl > 0)
{
if (block_inside_limit > (9 - sharpness_lvl))
{
block_inside_limit = (9 - sharpness_lvl);
}
}
if (block_inside_limit < 1)
{
block_inside_limit = 1;
}
//memset(lfi.lim[i], block_inside_limit, loopfilter.SIMD_WIDTH);
//memset(lfi.blim[i], (2 * filt_lvl + block_inside_limit), loopfilter.SIMD_WIDTH);
//memset(lfi.mblim[i], (2 * (filt_lvl + 2) + block_inside_limit),
// loopfilter.SIMD_WIDTH);
for (int j = 0; j < loopfilter.SIMD_WIDTH; j++)
{
lfi.lim[i, j] = (byte)block_inside_limit;
lfi.blim[i, j] = (byte)(2 * filt_lvl + block_inside_limit);
lfi.mblim[i, j] = (byte)(2 * (filt_lvl + 2) + block_inside_limit);
}
}
}
static void lf_init_lut(loop_filter_info_n lfi)
{
int filt_lvl;
for (filt_lvl = 0; filt_lvl <= loopfilter.MAX_LOOP_FILTER; ++filt_lvl)
{
if (filt_lvl >= 40)
{
lfi.hev_thr_lut[(int)FRAME_TYPE.KEY_FRAME, filt_lvl] = 2;
lfi.hev_thr_lut[(int)FRAME_TYPE.INTER_FRAME, filt_lvl] = 3;
}
else if (filt_lvl >= 20)
{
lfi.hev_thr_lut[(int)FRAME_TYPE.KEY_FRAME, filt_lvl] = 1;
lfi.hev_thr_lut[(int)FRAME_TYPE.INTER_FRAME, filt_lvl] = 2;
}
else if (filt_lvl >= 15)
{
lfi.hev_thr_lut[(int)FRAME_TYPE.KEY_FRAME, filt_lvl] = 1;
lfi.hev_thr_lut[(int)FRAME_TYPE.INTER_FRAME, filt_lvl] = 1;
}
else
{
lfi.hev_thr_lut[(int)FRAME_TYPE.KEY_FRAME, filt_lvl] = 0;
lfi.hev_thr_lut[(int)FRAME_TYPE.INTER_FRAME, filt_lvl] = 0;
}
}
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.DC_PRED] = 1;
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.V_PRED] = 1;
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.H_PRED] = 1;
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.TM_PRED] = 1;
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.B_PRED] = 0;
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.ZEROMV] = 1;
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.NEARESTMV] = 2;
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.NEARMV] = 2;
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.NEWMV] = 2;
lfi.mode_lf_lut[(int)MB_PREDICTION_MODE.SPLITMV] = 3;
}
public static void vp8_loop_filter_init(VP8_COMMON cm)
{
loop_filter_info_n lfi = cm.lf_info;
int i;
/* init limits for given sharpness*/
vp8_loop_filter_update_sharpness(lfi, cm.sharpness_level);
cm.last_sharpness_level = cm.sharpness_level;
/* init LUT for lvl and hev thr picking */
lf_init_lut(lfi);
/* init hev threshold const vectors */
for (i = 0; i < 4; ++i)
{
//memset(lfi.hev_thr[i], i, loopfilter.SIMD_WIDTH);
for (int j = 0; j < loopfilter.SIMD_WIDTH; j++)
{
lfi.hev_thr[i, j] = (byte)i;
}
}
}
public unsafe static void vp8_loop_filter_row_simple(VP8_COMMON cm, ArrPtr <MODE_INFO> mode_info_context,
int mb_row, int post_ystride,
byte *y_ptr)
{
int mb_col;
int filter_level;
loop_filter_info_n lfi_n = cm.lf_info;
for (mb_col = 0; mb_col < cm.mb_cols; ++mb_col)
{
int skip_lf = (mode_info_context.get().mbmi.mode != (int)MB_PREDICTION_MODE.B_PRED &&
mode_info_context.get().mbmi.mode != (int)MB_PREDICTION_MODE.SPLITMV &&
mode_info_context.get().mbmi.mb_skip_coeff > 0) ? 1 : 0;
int mode_index = lfi_n.mode_lf_lut[mode_info_context.get().mbmi.mode];
int seg = mode_info_context.get().mbmi.segment_id;
int ref_frame = mode_info_context.get().mbmi.ref_frame;
filter_level = lfi_n.lvl[seg, ref_frame, mode_index];
if (filter_level > 0)
{
if (mb_col > 0)
{
//vp8_rtcd.vp8_loop_filter_simple_mbv(y_ptr, post_ystride, lfi_n.mblim[filter_level]);
fixed(byte *pMBlim = lfi_n.mblim)
{
int step = filter_level * lfi_n.mblim.GetLength(1);
vp8_rtcd.vp8_loop_filter_simple_mbv(y_ptr, post_ystride, pMBlim + step);
}
}
if (skip_lf == 0)
{
//vp8_rtcd.vp8_loop_filter_simple_bv(y_ptr, post_ystride, lfi_n.blim[filter_level]);
fixed(byte *pBlim = lfi_n.blim)
{
int step = lfi_n.blim.GetLength(1) * filter_level;
vp8_rtcd.vp8_loop_filter_simple_bv(y_ptr, post_ystride, pBlim + step);
}
}
/* don't apply across umv border */
if (mb_row > 0)
{
//vp8_rtcd.vp8_loop_filter_simple_mbh(y_ptr, post_ystride, lfi_n.mblim[filter_level]);
fixed(byte *pMBlim = lfi_n.mblim)
{
int step = lfi_n.mblim.GetLength(1) * filter_level;
vp8_rtcd.vp8_loop_filter_simple_mbh(y_ptr, post_ystride, pMBlim + step);
}
}
if (skip_lf == 0)
{
//vp8_rtcd.vp8_loop_filter_simple_bh(y_ptr, post_ystride, lfi_n.blim[filter_level]);
fixed(byte *pBlim = lfi_n.blim)
{
int step = lfi_n.blim.GetLength(1) * filter_level;
vp8_rtcd.vp8_loop_filter_simple_bh(y_ptr, post_ystride, pBlim + step);
}
}
}
y_ptr += 16;
mode_info_context++; /* step to next MB */
}
}
public unsafe static void vp8_loop_filter_row_normal(VP8_COMMON cm, ArrPtr <MODE_INFO> mode_info_context,
int mb_row, int post_ystride, int post_uvstride,
byte *y_ptr, byte *u_ptr,
byte *v_ptr)
{
int mb_col;
int filter_level;
loop_filter_info_n lfi_n = cm.lf_info;
loop_filter_info lfi = new loop_filter_info();
FRAME_TYPE frame_type = cm.frame_type;
for (mb_col = 0; mb_col < cm.mb_cols; ++mb_col)
{
int skip_lf = (mode_info_context.get().mbmi.mode != (int)MB_PREDICTION_MODE.B_PRED &&
mode_info_context.get().mbmi.mode != (int)MB_PREDICTION_MODE.SPLITMV &&
mode_info_context.get().mbmi.mb_skip_coeff > 0) ? 1 : 0;
int mode_index = lfi_n.mode_lf_lut[mode_info_context.get().mbmi.mode];
int seg = mode_info_context.get().mbmi.segment_id;
int ref_frame = mode_info_context.get().mbmi.ref_frame;
filter_level = lfi_n.lvl[seg, ref_frame, mode_index];
if (filter_level > 0)
{
int hev_index = lfi_n.hev_thr_lut[(int)frame_type, filter_level];
//lfi.mblim = lfi_n.mblim[filter_level];
//lfi.blim = lfi_n.blim[filter_level];
//lfi.lim = lfi_n.lim[filter_level];
//lfi.hev_thr = lfi_n.hev_thr[hev_index];
fixed(byte *pMblin = lfi_n.mblim, pBlim = lfi_n.blim, pLim = lfi_n.lim, pHev_thr = lfi_n.hev_thr)
{
lfi.mblim = pMblin + lfi_n.mblim.GetLength(1) * filter_level;
lfi.blim = pBlim + lfi_n.blim.GetLength(1) * filter_level;
lfi.lim = pLim + lfi_n.lim.GetLength(1) * filter_level;
lfi.hev_thr = pHev_thr + lfi_n.hev_thr.GetLength(1) * hev_index;
if (mb_col > 0)
{
vp8_rtcd.vp8_loop_filter_mbv(y_ptr, u_ptr, v_ptr, post_ystride, post_uvstride, lfi);
}
if (skip_lf == 0)
{
vp8_rtcd.vp8_loop_filter_bv(y_ptr, u_ptr, v_ptr, post_ystride, post_uvstride, lfi);
}
/* don't apply across umv border */
if (mb_row > 0)
{
vp8_rtcd.vp8_loop_filter_mbh(y_ptr, u_ptr, v_ptr, post_ystride, post_uvstride, lfi);
}
if (skip_lf == 0)
{
vp8_rtcd.vp8_loop_filter_bh(y_ptr, u_ptr, v_ptr, post_ystride, post_uvstride, lfi);
}
}
}
y_ptr += 16;
u_ptr += 8;
v_ptr += 8;
mode_info_context++; /* step to next MB */
}
}
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;
}
}
}
}
