avcodec/mips: preload data in hevc sao edge 45 degree filter msa functions

Signed-off-by: Kaustubh Raste <kaustubh.raste@imgtec.com>
Reviewed-by: Manojkumar Bhosale <Manojkumar.Bhosale@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 135 insertions, 62 deletions

diff --git a/libavcodec/mips/hevc_lpf_sao_msa.c b/libavcodec/mips/hevc_lpf_sao_msa.c
index 39c647ed79..c192265e85 100644
--- a/libavcodec/mips/hevc_lpf_sao_msa.c
+++ b/libavcodec/mips/hevc_lpf_sao_msa.c
@@ -1878,23 +1878,25 @@ static void hevc_sao_edge_filter_45degree_4width_msa(uint8_t *dst,
                                                      int32_t height)
 {
     uint8_t *src_orig;
-    int32_t h_cnt;
     uint32_t dst_val0, dst_val1;
-    v8i16 edge_idx = { 1, 2, 0, 3, 4, 0, 0, 0 };
+    v16i8 edge_idx = { 1, 2, 0, 3, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
     v16u8 const1 = (v16u8) __msa_ldi_b(1);
-    v16i8 zero = { 0 };
+    v16i8 offset, sao_offset = LD_SB(sao_offset_val);
     v16u8 cmp_minus10, diff_minus10, src_minus10, cmp_minus11, diff_minus11;
     v16u8 src_minus11, src10, src11;
     v16i8 src_plus0, src_zero0, src_plus1, src_zero1, dst0;
-    v8i16 sao_offset, src00, src01, offset_mask0, offset_mask1;
+    v8i16 offset_mask0, offset_mask1;
 
-    sao_offset = LD_SH(sao_offset_val);
+    sao_offset = __msa_pckev_b(sao_offset, sao_offset);
 
     src_orig = src - 1;
+
+    /* load in advance */
     LD_UB2(src_orig - src_stride, src_stride, src_minus10, src_minus11);
+    LD_UB2(src_orig + src_stride, src_stride, src10, src11);
 
-    for (h_cnt = (height >> 1); h_cnt--;) {
-        LD_UB2(src_orig + src_stride, src_stride, src10, src11);
+    for (height -= 2; height; height -= 2) {
+        src_orig += (src_stride << 1);
 
         SLDI_B2_0_SB(src_minus11, src10, src_zero0, src_zero1, 1);
         SLDI_B2_0_SB(src10, src11, src_plus0, src_plus1, 2);
@@ -1917,20 +1919,22 @@ static void hevc_sao_edge_filter_45degree_4width_msa(uint8_t *dst,
         offset_mask0 = (v8i16) (__msa_hadd_u_h(diff_minus10, diff_minus10) + 2);
         offset_mask1 = (v8i16) (__msa_hadd_u_h(diff_minus11, diff_minus11) + 2);
 
-        VSHF_H2_SH(edge_idx, edge_idx, sao_offset, sao_offset, offset_mask0,
-                   offset_mask0, offset_mask0, offset_mask0);
-        VSHF_H2_SH(edge_idx, edge_idx, sao_offset, sao_offset, offset_mask1,
-                   offset_mask1, offset_mask1, offset_mask1);
-        ILVEV_B2_SH(src_zero0, zero, src_zero1, zero, src00, src01);
-        ADD2(offset_mask0, src00, offset_mask1, src01, offset_mask0,
-             offset_mask1);
-        CLIP_SH2_0_255(offset_mask0, offset_mask1);
+        offset = __msa_pckev_b((v16i8) offset_mask1, (v16i8) offset_mask0);
+        dst0 = __msa_pckev_b((v16i8) src_zero1, (v16i8) src_zero0);
 
-        dst0 = __msa_pckev_b((v16i8) offset_mask1, (v16i8) offset_mask0);
+        VSHF_B2_SB(edge_idx, edge_idx, sao_offset, sao_offset, offset,
+                   offset, offset, offset);
+
+        dst0 = (v16i8) __msa_xori_b((v16u8) dst0, 128);
+        dst0 = __msa_adds_s_b(dst0, offset);
+        dst0 = (v16i8) __msa_xori_b((v16u8) dst0, 128);
 
         src_minus10 = src10;
         src_minus11 = src11;
 
+        /* load in advance */
+        LD_UB2(src_orig + src_stride, src_stride, src10, src11);
+
         dst_val0 = __msa_copy_u_w((v4i32) dst0, 0);
         dst_val1 = __msa_copy_u_w((v4i32) dst0, 2);
         SW(dst_val0, dst);
@@ -1938,8 +1942,44 @@ static void hevc_sao_edge_filter_45degree_4width_msa(uint8_t *dst,
         SW(dst_val1, dst);
 
         dst += dst_stride;
-        src_orig += (src_stride << 1);
     }
+
+    SLDI_B2_0_SB(src_minus11, src10, src_zero0, src_zero1, 1);
+    SLDI_B2_0_SB(src10, src11, src_plus0, src_plus1, 2);
+
+    ILVR_B2_UB(src_plus0, src_minus10, src_plus1, src_minus11, src_minus10,
+               src_minus11);
+    ILVR_B2_SB(src_zero0, src_zero0, src_zero1, src_zero1, src_zero0,
+               src_zero1);
+
+    cmp_minus10 = ((v16u8) src_zero0 == src_minus10);
+    diff_minus10 = __msa_nor_v(cmp_minus10, cmp_minus10);
+    cmp_minus10 = (src_minus10 < (v16u8) src_zero0);
+    diff_minus10 = __msa_bmnz_v(diff_minus10, const1, cmp_minus10);
+
+    cmp_minus11 = ((v16u8) src_zero1 == src_minus11);
+    diff_minus11 = __msa_nor_v(cmp_minus11, cmp_minus11);
+    cmp_minus11 = (src_minus11 < (v16u8) src_zero1);
+    diff_minus11 = __msa_bmnz_v(diff_minus11, const1, cmp_minus11);
+
+    offset_mask0 = (v8i16) (__msa_hadd_u_h(diff_minus10, diff_minus10) + 2);
+    offset_mask1 = (v8i16) (__msa_hadd_u_h(diff_minus11, diff_minus11) + 2);
+
+    offset = __msa_pckev_b((v16i8) offset_mask1, (v16i8) offset_mask0);
+    dst0 = __msa_pckev_b((v16i8) src_zero1, (v16i8) src_zero0);
+
+    VSHF_B2_SB(edge_idx, edge_idx, sao_offset, sao_offset, offset, offset,
+               offset, offset);
+
+    dst0 = (v16i8) __msa_xori_b((v16u8) dst0, 128);
+    dst0 = __msa_adds_s_b(dst0, offset);
+    dst0 = (v16i8) __msa_xori_b((v16u8) dst0, 128);
+
+    dst_val0 = __msa_copy_u_w((v4i32) dst0, 0);
+    dst_val1 = __msa_copy_u_w((v4i32) dst0, 2);
+    SW(dst_val0, dst);
+    dst += dst_stride;
+    SW(dst_val1, dst);
 }
 
 static void hevc_sao_edge_filter_45degree_8width_msa(uint8_t *dst,
@@ -1950,23 +1990,24 @@ static void hevc_sao_edge_filter_45degree_8width_msa(uint8_t *dst,
                                                      int32_t height)
 {
     uint8_t *src_orig;
-    int32_t h_cnt;
     uint64_t dst_val0, dst_val1;
-    v8i16 edge_idx = { 1, 2, 0, 3, 4, 0, 0, 0 };
+    v16i8 edge_idx = { 1, 2, 0, 3, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
     v16u8 const1 = (v16u8) __msa_ldi_b(1);
-    v16i8 zero = { 0 };
+    v16i8 offset, sao_offset = LD_SB(sao_offset_val);
     v16u8 cmp_minus10, diff_minus10, cmp_minus11, diff_minus11;
     v16u8 src_minus10, src10, src_minus11, src11;
-    v16i8 src_zero0, src_plus10, src_zero1, src_plus11, dst0, dst1;
-    v8i16 sao_offset, src00, offset_mask0, src01, offset_mask1;
+    v16i8 src_zero0, src_plus10, src_zero1, src_plus11, dst0;
+    v8i16 offset_mask0, offset_mask1;
 
-    sao_offset = LD_SH(sao_offset_val);
+    sao_offset = __msa_pckev_b(sao_offset, sao_offset);
     src_orig = src - 1;
 
+    /* load in advance */
     LD_UB2(src_orig - src_stride, src_stride, src_minus10, src_minus11);
+    LD_UB2(src_orig + src_stride, src_stride, src10, src11);
 
-    for (h_cnt = (height >> 1); h_cnt--;) {
-        LD_UB2(src_orig + src_stride, src_stride, src10, src11);
+    for (height -= 2; height; height -= 2) {
+        src_orig += (src_stride << 1);
 
         SLDI_B2_0_SB(src_minus11, src10, src_zero0, src_zero1, 1);
         SLDI_B2_0_SB(src10, src11, src_plus10, src_plus11, 2);
@@ -1989,29 +2030,71 @@ static void hevc_sao_edge_filter_45degree_8width_msa(uint8_t *dst,
         offset_mask0 = (v8i16) (__msa_hadd_u_h(diff_minus10, diff_minus10) + 2);
         offset_mask1 = (v8i16) (__msa_hadd_u_h(diff_minus11, diff_minus11) + 2);
 
-        VSHF_H2_SH(edge_idx, edge_idx, sao_offset, sao_offset, offset_mask0,
-                   offset_mask0, offset_mask0, offset_mask0);
-        VSHF_H2_SH(edge_idx, edge_idx, sao_offset, sao_offset, offset_mask1,
-                   offset_mask1, offset_mask1, offset_mask1);
-        ILVEV_B2_SH(src_zero0, zero, src_zero1, zero, src00, src01);
-        ADD2(offset_mask0, src00, offset_mask1, src01, offset_mask0,
-             offset_mask1);
-        CLIP_SH2_0_255(offset_mask0, offset_mask1);
-        PCKEV_B2_SB(offset_mask0, offset_mask0, offset_mask1, offset_mask1,
-                    dst0, dst1);
+        offset = __msa_pckev_b((v16i8) offset_mask1, (v16i8) offset_mask0);
+        dst0 = __msa_pckev_b((v16i8) src_zero1, (v16i8) src_zero0);
+
+        VSHF_B2_SB(edge_idx, edge_idx, sao_offset, sao_offset, offset, offset,
+                   offset, offset);
+
+        dst0 = (v16i8) __msa_xori_b((v16u8) dst0, 128);
+        dst0 = __msa_adds_s_b(dst0, offset);
+        dst0 = (v16i8) __msa_xori_b((v16u8) dst0, 128);
 
         src_minus10 = src10;
         src_minus11 = src11;
 
+        /* load in advance */
+        LD_UB2(src_orig + src_stride, src_stride, src10, src11);
+
         dst_val0 = __msa_copy_u_d((v2i64) dst0, 0);
-        dst_val1 = __msa_copy_u_d((v2i64) dst1, 0);
+        dst_val1 = __msa_copy_u_d((v2i64) dst0, 1);
         SD(dst_val0, dst);
         dst += dst_stride;
         SD(dst_val1, dst);
-
         dst += dst_stride;
-        src_orig += (src_stride << 1);
     }
+
+    SLDI_B2_0_SB(src_minus11, src10, src_zero0, src_zero1, 1);
+    SLDI_B2_0_SB(src10, src11, src_plus10, src_plus11, 2);
+    ILVR_B2_UB(src_plus10, src_minus10, src_plus11, src_minus11, src_minus10,
+               src_minus11);
+    ILVR_B2_SB(src_zero0, src_zero0, src_zero1, src_zero1, src_zero0,
+               src_zero1);
+
+    cmp_minus10 = ((v16u8) src_zero0 == src_minus10);
+    diff_minus10 = __msa_nor_v(cmp_minus10, cmp_minus10);
+    cmp_minus10 = (src_minus10 < (v16u8) src_zero0);
+    diff_minus10 = __msa_bmnz_v(diff_minus10, const1, cmp_minus10);
+
+    cmp_minus11 = ((v16u8) src_zero1 == src_minus11);
+    diff_minus11 = __msa_nor_v(cmp_minus11, cmp_minus11);
+    cmp_minus11 = (src_minus11 < (v16u8) src_zero1);
+    diff_minus11 = __msa_bmnz_v(diff_minus11, const1, cmp_minus11);
+
+    offset_mask0 = (v8i16) (__msa_hadd_u_h(diff_minus10, diff_minus10) + 2);
+    offset_mask1 = (v8i16) (__msa_hadd_u_h(diff_minus11, diff_minus11) + 2);
+
+    offset = __msa_pckev_b((v16i8) offset_mask1, (v16i8) offset_mask0);
+    dst0 = __msa_pckev_b((v16i8) src_zero1, (v16i8) src_zero0);
+
+    VSHF_B2_SB(edge_idx, edge_idx, sao_offset, sao_offset, offset, offset,
+               offset, offset);
+
+    dst0 = (v16i8) __msa_xori_b((v16u8) dst0, 128);
+    dst0 = __msa_adds_s_b(dst0, offset);
+    dst0 = (v16i8) __msa_xori_b((v16u8) dst0, 128);
+
+    src_minus10 = src10;
+    src_minus11 = src11;
+
+    /* load in advance */
+    LD_UB2(src_orig + src_stride, src_stride, src10, src11);
+
+    dst_val0 = __msa_copy_u_d((v2i64) dst0, 0);
+    dst_val1 = __msa_copy_u_d((v2i64) dst0, 1);
+    SD(dst_val0, dst);
+    dst += dst_stride;
+    SD(dst_val1, dst);
 }
 
 static void hevc_sao_edge_filter_45degree_16multiple_msa(uint8_t *dst,
@@ -2025,7 +2108,7 @@ static void hevc_sao_edge_filter_45degree_16multiple_msa(uint8_t *dst,
 {
     uint8_t *src_orig = src;
     uint8_t *dst_orig = dst;
-    int32_t h_cnt, v_cnt;
+    int32_t v_cnt;
     v16i8 edge_idx = { 1, 2, 0, 3, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
     v16u8 const1 = (v16u8) __msa_ldi_b(1);
     v16u8 cmp_minus10, cmp_plus10, diff_minus10, diff_plus10, cmp_minus11;
@@ -2037,22 +2120,20 @@ static void hevc_sao_edge_filter_45degree_16multiple_msa(uint8_t *dst,
     v16u8 src12, src_minus12, dst2, src13, src_minus13, dst3;
     v16i8 src_zero0, src_plus10, src_zero1, src_plus11, src_zero2, src_plus12;
     v16i8 src_zero3, sao_offset;
-    v8i16 src0, src1, src2, src3, src4, src5, src6, src7;
-    v8i16 temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
 
     sao_offset = LD_SB(sao_offset_val);
     sao_offset = __msa_pckev_b(sao_offset, sao_offset);
 
-    for (h_cnt = (height >> 2); h_cnt--;) {
+    for (; height; height -= 4) {
         src_orig = src - 1;
         dst_orig = dst;
-        LD_UB4(src_orig, src_stride,
-               src_minus11, src_minus12, src_minus13, src_minus14);
+        LD_UB4(src_orig, src_stride, src_minus11, src_minus12, src_minus13,
+               src_minus14);
 
-        for (v_cnt = 0; v_cnt < (width >> 4); v_cnt++) {
+        for (v_cnt = 0; v_cnt < width; v_cnt += 16) {
             src_minus10 = LD_UB(src_orig - src_stride);
             LD_UB4(src_orig + 16, src_stride, src10, src11, src12, src13);
-            src_plus13 = LD_UB(src + 1 + (v_cnt << 4) + (src_stride << 2));
+            src_plus13 = LD_UB(src + 1 + v_cnt + (src_stride << 2));
             src_orig += 16;
 
             SLDI_B2_SB(src10, src11, src_minus11, src_minus12, src_zero0,
@@ -2114,22 +2195,14 @@ static void hevc_sao_edge_filter_45degree_16multiple_msa(uint8_t *dst,
             VSHF_B2_SB(edge_idx, edge_idx, sao_offset, sao_offset,
                        offset_mask3, offset_mask3, offset_mask3, offset_mask3);
 
-            UNPCK_UB_SH(src_zero0, src0, src1);
-            UNPCK_SB_SH(offset_mask0, temp0, temp1);
-            UNPCK_UB_SH(src_zero1, src2, src3);
-            UNPCK_SB_SH(offset_mask1, temp2, temp3);
-            UNPCK_UB_SH(src_zero2, src4, src5);
-            UNPCK_SB_SH(offset_mask2, temp4, temp5);
-            UNPCK_UB_SH(src_zero3, src6, src7);
-            UNPCK_SB_SH(offset_mask3, temp6, temp7);
-            ADD4(temp0, src0, temp1, src1, temp2, src2, temp3, src3, temp0,
-                 temp1, temp2, temp3);
-            ADD4(temp4, src4, temp5, src5, temp6, src6, temp7, src7, temp4,
-                 temp5, temp6, temp7);
-            CLIP_SH4_0_255(temp0, temp1, temp2, temp3);
-            CLIP_SH4_0_255(temp4, temp5, temp6, temp7);
-            PCKEV_B4_UB(temp1, temp0, temp3, temp2, temp5, temp4,
-                        temp7, temp6, dst0, dst1, dst2, dst3);
+            XORI_B4_128_SB(src_zero0, src_zero1, src_zero2, src_zero3);
+
+            dst0 = (v16u8) __msa_adds_s_b((v16i8) src_zero0, offset_mask0);
+            dst1 = (v16u8) __msa_adds_s_b((v16i8) src_zero1, offset_mask1);
+            dst2 = (v16u8) __msa_adds_s_b((v16i8) src_zero2, offset_mask2);
+            dst3 = (v16u8) __msa_adds_s_b((v16i8) src_zero3, offset_mask3);
+
+            XORI_B4_128_UB(dst0, dst1, dst2, dst3);
 
             src_minus11 = src10;
             src_minus12 = src11;