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 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 i, t, u, diff;
+
+ 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 = src[0*step] - src[-1*step];
+ if (!t)
+ continue;
+
+ u = (alpha * FFABS(t)) >> 7;
+ if (u > 3 - (filter_p1 && filter_q1))
+ continue;
+
+ 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 (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)];
+ }
+ }
+}
+
+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_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) {
ff_rv34dsp_init(c, dsp);
c->rv40_weight_pixels_tab[0] = rv40_weight_func_16;
c->rv40_weight_pixels_tab[1] = rv40_weight_func_8;
+ 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);
+ if (HAVE_NEON)
+ ff_rv40dsp_init_neon(c, dsp);
}
projects / ffmpeg / blobdiff