RV40_WEIGHT_FUNC(16)
RV40_WEIGHT_FUNC(8)
+/**
+ * dither values for deblocking filter - left/top values
+ */
+static const uint8_t rv40_dither_l[16] = {
+ 0x40, 0x50, 0x20, 0x60, 0x30, 0x50, 0x40, 0x30,
+ 0x50, 0x40, 0x50, 0x30, 0x60, 0x20, 0x50, 0x40
+};
+
+/**
+ * dither values for deblocking filter - right/bottom values
+ */
+static const uint8_t rv40_dither_r[16] = {
+ 0x40, 0x30, 0x60, 0x20, 0x50, 0x30, 0x30, 0x40,
+ 0x40, 0x40, 0x50, 0x30, 0x20, 0x60, 0x30, 0x40
+};
+
+#define CLIP_SYMM(a, b) av_clip(a, -(b), b)
+/**
+ * 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)
+{
+ uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+ int 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;
+
+ 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)];
+ }
+}
+
+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;
+
+ 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;
+
+ 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];
+ }
+
+ 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;
+ }
+ }
+ }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_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);
+}
+
av_cold void ff_rv40dsp_init(RV34DSPContext *c, DSPContext* dsp) {
+
+ ff_rv34dsp_init(c, dsp);
+
c->put_pixels_tab[0][ 0] = dsp->put_h264_qpel_pixels_tab[0][0];
c->put_pixels_tab[0][ 1] = put_rv40_qpel16_mc10_c;
c->put_pixels_tab[0][ 2] = dsp->put_h264_qpel_pixels_tab[0][2];
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;
+
if (HAVE_MMX)
ff_rv40dsp_init_x86(c, dsp);
}
projects / ffmpeg / blobdiff