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rv40: rearrange loop filter functions

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This splits the loop filter functions into smaller, more SIMD-friendly
functions.

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard
2011-12-08 02:50:25 +00:00
parent 3e0b1c9a81
commit d8edf1b515
3 changed files with 245 additions and 151 deletions
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306
libavcodec/rv40dsp.c
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@@ -314,142 +314,194 @@ static const uint8_t rv40_dither_r[16] = {
/**
* weaker deblocking very similar to the one described in 4.4.2 of JVT-A003r1
*/
static inline void rv40_weak_loop_filter(uint8_t *src, const int step,
const int filter_p1, const int filter_q1,
const int alpha, const int beta,
const int lim_p0q0,
const int lim_q1, const int lim_p1,
const int diff_p1p0, const int diff_q1q0,
const int diff_p1p2, const int diff_q1q2)
static av_always_inline void rv40_weak_loop_filter(uint8_t *src,
const int step,
const int stride,
const int filter_p1,
const int filter_q1,
const int alpha,
const int beta,
const int lim_p0q0,
const int lim_q1,
const int lim_p1)
{
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
int t, u, diff;
int i, t, u, diff;
t = src[0*step] - src[-1*step];
if(!t)
return;
u = (alpha * FFABS(t)) >> 7;
if(u > 3 - (filter_p1 && filter_q1))
return;
for (i = 0; i < 4; i++, src += stride) {
int diff_p1p0 = src[-2*step] - src[-1*step];
int diff_q1q0 = src[ 1*step] - src[ 0*step];
int diff_p1p2 = src[-2*step] - src[-3*step];
int diff_q1q2 = src[ 1*step] - src[ 2*step];
t <<= 2;
if(filter_p1 && filter_q1)
t += src[-2*step] - src[1*step];
diff = CLIP_SYMM((t + 4) >> 3, lim_p0q0);
src[-1*step] = cm[src[-1*step] + diff];
src[ 0*step] = cm[src[ 0*step] - diff];
if(FFABS(diff_p1p2) <= beta && filter_p1){
t = (diff_p1p0 + diff_p1p2 - diff) >> 1;
src[-2*step] = cm[src[-2*step] - CLIP_SYMM(t, lim_p1)];
}
if(FFABS(diff_q1q2) <= beta && filter_q1){
t = (diff_q1q0 + diff_q1q2 + diff) >> 1;
src[ 1*step] = cm[src[ 1*step] - CLIP_SYMM(t, lim_q1)];
}
}
t = src[0*step] - src[-1*step];
if (!t)
continue;
static av_always_inline void rv40_adaptive_loop_filter(uint8_t *src, const int step,
const int stride, const int dmode,
const int lim_q1, const int lim_p1,
const int alpha,
const int beta, const int beta2,
const int chroma, const int edge)
{
int diff_p1p0[4], diff_q1q0[4], diff_p1p2[4], diff_q1q2[4];
int sum_p1p0 = 0, sum_q1q0 = 0, sum_p1p2 = 0, sum_q1q2 = 0;
uint8_t *ptr;
int flag_strong0 = 1, flag_strong1 = 1;
int filter_p1, filter_q1;
int i;
int lims;
u = (alpha * FFABS(t)) >> 7;
if (u > 3 - (filter_p1 && filter_q1))
continue;
for(i = 0, ptr = src; i < 4; i++, ptr += stride){
diff_p1p0[i] = ptr[-2*step] - ptr[-1*step];
diff_q1q0[i] = ptr[ 1*step] - ptr[ 0*step];
sum_p1p0 += diff_p1p0[i];
sum_q1q0 += diff_q1q0[i];
}
filter_p1 = FFABS(sum_p1p0) < (beta<<2);
filter_q1 = FFABS(sum_q1q0) < (beta<<2);
if(!filter_p1 && !filter_q1)
return;
t <<= 2;
if (filter_p1 && filter_q1)
t += src[-2*step] - src[1*step];
for(i = 0, ptr = src; i < 4; i++, ptr += stride){
diff_p1p2[i] = ptr[-2*step] - ptr[-3*step];
diff_q1q2[i] = ptr[ 1*step] - ptr[ 2*step];
sum_p1p2 += diff_p1p2[i];
sum_q1q2 += diff_q1q2[i];
}
diff = CLIP_SYMM((t + 4) >> 3, lim_p0q0);
src[-1*step] = cm[src[-1*step] + diff];
src[ 0*step] = cm[src[ 0*step] - diff];
if(edge){
flag_strong0 = filter_p1 && (FFABS(sum_p1p2) < beta2);
flag_strong1 = filter_q1 && (FFABS(sum_q1q2) < beta2);
}else{
flag_strong0 = flag_strong1 = 0;
}
lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1;
if(flag_strong0 && flag_strong1){ /* strong filtering */
for(i = 0; i < 4; i++, src += stride){
int sflag, p0, q0, p1, q1;
int t = src[0*step] - src[-1*step];
if(!t) continue;
sflag = (alpha * FFABS(t)) >> 7;
if(sflag > 1) continue;
p0 = (25*src[-3*step] + 26*src[-2*step]
+ 26*src[-1*step]
+ 26*src[ 0*step] + 25*src[ 1*step] + rv40_dither_l[dmode + i]) >> 7;
q0 = (25*src[-2*step] + 26*src[-1*step]
+ 26*src[ 0*step]
+ 26*src[ 1*step] + 25*src[ 2*step] + rv40_dither_r[dmode + i]) >> 7;
if(sflag){
p0 = av_clip(p0, src[-1*step] - lims, src[-1*step] + lims);
q0 = av_clip(q0, src[ 0*step] - lims, src[ 0*step] + lims);
}
p1 = (25*src[-4*step] + 26*src[-3*step]
+ 26*src[-2*step]
+ 26*p0 + 25*src[ 0*step] + rv40_dither_l[dmode + i]) >> 7;
q1 = (25*src[-1*step] + 26*q0
+ 26*src[ 1*step]
+ 26*src[ 2*step] + 25*src[ 3*step] + rv40_dither_r[dmode + i]) >> 7;
if(sflag){
p1 = av_clip(p1, src[-2*step] - lims, src[-2*step] + lims);
q1 = av_clip(q1, src[ 1*step] - lims, src[ 1*step] + lims);
}
src[-2*step] = p1;
src[-1*step] = p0;
src[ 0*step] = q0;
src[ 1*step] = q1;
if(!chroma){
src[-3*step] = (25*src[-1*step] + 26*src[-2*step] + 51*src[-3*step] + 26*src[-4*step] + 64) >> 7;
src[ 2*step] = (25*src[ 0*step] + 26*src[ 1*step] + 51*src[ 2*step] + 26*src[ 3*step] + 64) >> 7;
}
if (filter_p1 && FFABS(diff_p1p2) <= beta) {
t = (diff_p1p0 + diff_p1p2 - diff) >> 1;
src[-2*step] = cm[src[-2*step] - CLIP_SYMM(t, lim_p1)];
}
if (filter_q1 && FFABS(diff_q1q2) <= beta) {
t = (diff_q1q0 + diff_q1q2 + diff) >> 1;
src[ 1*step] = cm[src[ 1*step] - CLIP_SYMM(t, lim_q1)];
}
}else if(filter_p1 && filter_q1){
for(i = 0; i < 4; i++, src += stride)
rv40_weak_loop_filter(src, step, 1, 1, alpha, beta, lims, lim_q1, lim_p1,
diff_p1p0[i], diff_q1q0[i], diff_p1p2[i], diff_q1q2[i]);
}else{
for(i = 0; i < 4; i++, src += stride)
rv40_weak_loop_filter(src, step, filter_p1, filter_q1,
alpha, beta, lims>>1, lim_q1>>1, lim_p1>>1,
diff_p1p0[i], diff_q1q0[i], diff_p1p2[i], diff_q1q2[i]);
}
}
static void rv40_v_loop_filter(uint8_t *src, int stride, int dmode,
int lim_q1, int lim_p1,
int alpha, int beta, int beta2, int chroma, int edge){
rv40_adaptive_loop_filter(src, 1, stride, dmode, lim_q1, lim_p1,
alpha, beta, beta2, chroma, edge);
static void rv40_h_weak_loop_filter(uint8_t *src, const int stride,
const int filter_p1, const int filter_q1,
const int alpha, const int beta,
const int lim_p0q0, const int lim_q1,
const int lim_p1)
{
rv40_weak_loop_filter(src, stride, 1, filter_p1, filter_q1,
alpha, beta, lim_p0q0, lim_q1, lim_p1);
}
static void rv40_h_loop_filter(uint8_t *src, int stride, int dmode,
int lim_q1, int lim_p1,
int alpha, int beta, int beta2, int chroma, int edge){
rv40_adaptive_loop_filter(src, stride, 1, dmode, lim_q1, lim_p1,
alpha, beta, beta2, chroma, edge);
static void rv40_v_weak_loop_filter(uint8_t *src, const int stride,
const int filter_p1, const int filter_q1,
const int alpha, const int beta,
const int lim_p0q0, const int lim_q1,
const int lim_p1)
{
rv40_weak_loop_filter(src, 1, stride, filter_p1, filter_q1,
alpha, beta, lim_p0q0, lim_q1, lim_p1);
}
static av_always_inline void rv40_strong_loop_filter(uint8_t *src,
const int step,
const int stride,
const int alpha,
const int lims,
const int dmode,
const int chroma)
{
int i;
for(i = 0; i < 4; i++, src += stride){
int sflag, p0, q0, p1, q1;
int t = src[0*step] - src[-1*step];
if (!t)
continue;
sflag = (alpha * FFABS(t)) >> 7;
if (sflag > 1)
continue;
p0 = (25*src[-3*step] + 26*src[-2*step] + 26*src[-1*step] +
26*src[ 0*step] + 25*src[ 1*step] +
rv40_dither_l[dmode + i]) >> 7;
q0 = (25*src[-2*step] + 26*src[-1*step] + 26*src[ 0*step] +
26*src[ 1*step] + 25*src[ 2*step] +
rv40_dither_r[dmode + i]) >> 7;
if (sflag) {
p0 = av_clip(p0, src[-1*step] - lims, src[-1*step] + lims);
q0 = av_clip(q0, src[ 0*step] - lims, src[ 0*step] + lims);
}
p1 = (25*src[-4*step] + 26*src[-3*step] + 26*src[-2*step] + 26*p0 +
25*src[ 0*step] + rv40_dither_l[dmode + i]) >> 7;
q1 = (25*src[-1*step] + 26*q0 + 26*src[ 1*step] + 26*src[ 2*step] +
25*src[ 3*step] + rv40_dither_r[dmode + i]) >> 7;
if (sflag) {
p1 = av_clip(p1, src[-2*step] - lims, src[-2*step] + lims);
q1 = av_clip(q1, src[ 1*step] - lims, src[ 1*step] + lims);
}
src[-2*step] = p1;
src[-1*step] = p0;
src[ 0*step] = q0;
src[ 1*step] = q1;
if(!chroma){
src[-3*step] = (25*src[-1*step] + 26*src[-2*step] +
51*src[-3*step] + 26*src[-4*step] + 64) >> 7;
src[ 2*step] = (25*src[ 0*step] + 26*src[ 1*step] +
51*src[ 2*step] + 26*src[ 3*step] + 64) >> 7;
}
}
}
static void rv40_h_strong_loop_filter(uint8_t *src, const int stride,
const int alpha, const int lims,
const int dmode, const int chroma)
{
rv40_strong_loop_filter(src, stride, 1, alpha, lims, dmode, chroma);
}
static void rv40_v_strong_loop_filter(uint8_t *src, const int stride,
const int alpha, const int lims,
const int dmode, const int chroma)
{
rv40_strong_loop_filter(src, 1, stride, alpha, lims, dmode, chroma);
}
static av_always_inline int rv40_loop_filter_strength(uint8_t *src,
int step, int stride,
int beta, int beta2,
int edge,
int *p1, int *q1)
{
int sum_p1p0 = 0, sum_q1q0 = 0, sum_p1p2 = 0, sum_q1q2 = 0;
int strong0 = 0, strong1 = 0;
uint8_t *ptr;
int i;
for (i = 0, ptr = src; i < 4; i++, ptr += stride) {
sum_p1p0 += ptr[-2*step] - ptr[-1*step];
sum_q1q0 += ptr[ 1*step] - ptr[ 0*step];
}
*p1 = FFABS(sum_p1p0) < (beta << 2);
*q1 = FFABS(sum_q1q0) < (beta << 2);
if(!*p1 && !*q1)
return 0;
if (!edge)
return 0;
for (i = 0, ptr = src; i < 4; i++, ptr += stride) {
sum_p1p2 += ptr[-2*step] - ptr[-3*step];
sum_q1q2 += ptr[ 1*step] - ptr[ 2*step];
}
strong0 = *p1 && (FFABS(sum_p1p2) < beta2);
strong1 = *q1 && (FFABS(sum_q1q2) < beta2);
return strong0 && strong1;
}
static int rv40_h_loop_filter_strength(uint8_t *src, int stride,
int beta, int beta2, int edge,
int *p1, int *q1)
{
return rv40_loop_filter_strength(src, stride, 1, beta, beta2, edge, p1, q1);
}
static int rv40_v_loop_filter_strength(uint8_t *src, int stride,
int beta, int beta2, int edge,
int *p1, int *q1)
{
return rv40_loop_filter_strength(src, 1, stride, beta, beta2, edge, p1, q1);
}
av_cold void ff_rv40dsp_init(RV34DSPContext *c, DSPContext* dsp) {
@@ -529,8 +581,12 @@ av_cold void ff_rv40dsp_init(RV34DSPContext *c, DSPContext* dsp) {
c->rv40_weight_pixels_tab[0] = rv40_weight_func_16;
c->rv40_weight_pixels_tab[1] = rv40_weight_func_8;
c->rv40_h_loop_filter = rv40_h_loop_filter;
c->rv40_v_loop_filter = rv40_v_loop_filter;
c->rv40_weak_loop_filter[0] = rv40_h_weak_loop_filter;
c->rv40_weak_loop_filter[1] = rv40_v_weak_loop_filter;
c->rv40_strong_loop_filter[0] = rv40_h_strong_loop_filter;
c->rv40_strong_loop_filter[1] = rv40_v_strong_loop_filter;
c->rv40_loop_filter_strength[0] = rv40_h_loop_filter_strength;
c->rv40_loop_filter_strength[1] = rv40_v_loop_filter_strength;
if (HAVE_MMX)
ff_rv40dsp_init_x86(c, dsp);