avcodec/mips: [loongson] optimize theora decoding in vp3dsp.

Optimize theora decoding with msa in functions:
1. ff_vp3_idct_add_msa
2. ff_vp3_idct_put_msa
3. ff_vp3_idct_dc_add_msa
4. ff_vp3_v_loop_filter_msa
5. ff_vp3_h_loop_filter_msa
6. ff_put_no_rnd_pixels_l2_msa

Theora decoding speed improved about 36%(from 22fps to 30fps, Tested on loongson 2K1000).

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

6 files changed, 750 insertions, 0 deletions

diff --git a/libavcodec/mips/Makefile b/libavcodec/mips/Makefile
index 1f659a0037..35712072a8 100644
--- a/libavcodec/mips/Makefile
+++ b/libavcodec/mips/Makefile
@@ -22,6 +22,7 @@ OBJS-$(CONFIG_HEVC_DECODER)               += mips/hevcdsp_init_mips.o      \
                                              mips/hevcpred_init_mips.o
 OBJS-$(CONFIG_VP9_DECODER)                += mips/vp9dsp_init_mips.o
 OBJS-$(CONFIG_VP8_DECODER)                += mips/vp8dsp_init_mips.o
+OBJS-$(CONFIG_VP3DSP)                     += mips/vp3dsp_init_mips.o
 OBJS-$(CONFIG_H264DSP)                    += mips/h264dsp_init_mips.o
 OBJS-$(CONFIG_H264QPEL)                   += mips/h264qpel_init_mips.o
 OBJS-$(CONFIG_H264CHROMA)                 += mips/h264chroma_init_mips.o
@@ -54,6 +55,7 @@ MSA-OBJS-$(CONFIG_VP9_DECODER)            += mips/vp9_mc_msa.o             \
 MSA-OBJS-$(CONFIG_VP8_DECODER)            += mips/vp8_mc_msa.o             \
                                              mips/vp8_idct_msa.o           \
                                              mips/vp8_lpf_msa.o
+MSA-OBJS-$(CONFIG_VP3DSP)                 += mips/vp3dsp_idct_msa.o
 MSA-OBJS-$(CONFIG_H264DSP)                += mips/h264dsp_msa.o            \
                                              mips/h264idct_msa.o
 MSA-OBJS-$(CONFIG_H264QPEL)               += mips/h264qpel_msa.o
diff --git a/libavcodec/mips/vp3dsp_idct_msa.c b/libavcodec/mips/vp3dsp_idct_msa.c
new file mode 100644
index 0000000000..5427ac559b
--- /dev/null
+++ b/libavcodec/mips/vp3dsp_idct_msa.c
@@ -0,0 +1,662 @@
+/*
+ * Copyright (c) 2018 gxw <guxiwei-hf@loongson.cn>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "vp3dsp_mips.h"
+#include "libavutil/mips/generic_macros_msa.h"
+#include "libavutil/intreadwrite.h"
+#include "libavcodec/rnd_avg.h"
+
+static void idct_msa(uint8_t *dst, int stride, int16_t *input, int type)
+{
+    v8i16 r0, r1, r2, r3, r4, r5, r6, r7, sign;
+    v4i32 r0_r, r0_l, r1_r, r1_l, r2_r, r2_l, r3_r, r3_l,
+          r4_r, r4_l, r5_r, r5_l, r6_r, r6_l, r7_r, r7_l;
+    v4i32 A, B, C, D, Ad, Bd, Cd, Dd, E, F, G, H;
+    v4i32 Ed, Gd, Add, Bdd, Fd, Hd;
+    v16u8 sign_l;
+    v16i8 d0, d1, d2, d3, d4, d5, d6, d7;
+    v4i32 c0, c1, c2, c3, c4, c5, c6, c7;
+    v4i32 f0, f1, f2, f3, f4, f5, f6, f7;
+    v4i32 sign_t;
+    v16i8 zero = {0};
+    v16i8 mask = {0, 4, 8, 12, 16, 20, 24, 28, 0, 0, 0, 0, 0, 0, 0, 0};
+    v4i32 cnst64277w = {64277, 64277, 64277, 64277};
+    v4i32 cnst60547w = {60547, 60547, 60547, 60547};
+    v4i32 cnst54491w = {54491, 54491, 54491, 54491};
+    v4i32 cnst46341w = {46341, 46341, 46341, 46341};
+    v4i32 cnst36410w = {36410, 36410, 36410, 36410};
+    v4i32 cnst25080w = {25080, 25080, 25080, 25080};
+    v4i32 cnst12785w = {12785, 12785, 12785, 12785};
+    v4i32 cnst8w = {8, 8, 8, 8};
+    v4i32 cnst2048w = {2048, 2048, 2048, 2048};
+    v4i32 cnst128w = {128, 128, 128, 128};
+    int nstride = stride;
+
+    /* Extended input data */
+    LD_SH8(input, 8, r0, r1, r2, r3, r4, r5, r6, r7);
+    sign = __msa_clti_s_h(r0, 0);
+    r0_r = (v4i32) __msa_ilvr_h(sign, r0);
+    r0_l = (v4i32) __msa_ilvl_h(sign, r0);
+    sign = __msa_clti_s_h(r1, 0);
+    r1_r = (v4i32) __msa_ilvr_h(sign, r1);
+    r1_l = (v4i32) __msa_ilvl_h(sign, r1);
+    sign = __msa_clti_s_h(r2, 0);
+    r2_r = (v4i32) __msa_ilvr_h(sign, r2);
+    r2_l = (v4i32) __msa_ilvl_h(sign, r2);
+    sign = __msa_clti_s_h(r3, 0);
+    r3_r = (v4i32) __msa_ilvr_h(sign, r3);
+    r3_l = (v4i32) __msa_ilvl_h(sign, r3);
+    sign = __msa_clti_s_h(r4, 0);
+    r4_r = (v4i32) __msa_ilvr_h(sign, r4);
+    r4_l = (v4i32) __msa_ilvl_h(sign, r4);
+    sign = __msa_clti_s_h(r5, 0);
+    r5_r = (v4i32) __msa_ilvr_h(sign, r5);
+    r5_l = (v4i32) __msa_ilvl_h(sign, r5);
+    sign = __msa_clti_s_h(r6, 0);
+    r6_r = (v4i32) __msa_ilvr_h(sign, r6);
+    r6_l = (v4i32) __msa_ilvl_h(sign, r6);
+    sign = __msa_clti_s_h(r7, 0);
+    r7_r = (v4i32) __msa_ilvr_h(sign, r7);
+    r7_l = (v4i32) __msa_ilvl_h(sign, r7);
+
+    /* Right part */
+    A = ((r1_r * cnst64277w) >> 16) + ((r7_r * cnst12785w) >> 16);
+    B = ((r1_r * cnst12785w) >> 16) - ((r7_r * cnst64277w) >> 16);
+    C = ((r3_r * cnst54491w) >> 16) + ((r5_r * cnst36410w) >> 16);
+    D = ((r5_r * cnst54491w) >> 16) - ((r3_r * cnst36410w) >> 16);
+    Ad = ((A - C) * cnst46341w) >> 16;
+    Bd = ((B - D) * cnst46341w) >> 16;
+    Cd = A + C;
+    Dd = B + D;
+    E = ((r0_r + r4_r) * cnst46341w) >> 16;
+    F = ((r0_r - r4_r) * cnst46341w) >> 16;
+    G = ((r2_r * cnst60547w) >> 16) + ((r6_r * cnst25080w) >> 16);
+    H = ((r2_r * cnst25080w) >> 16) - ((r6_r * cnst60547w) >> 16);
+    Ed = E - G;
+    Gd = E + G;
+    Add = F + Ad;
+    Bdd = Bd - H;
+    Fd = F - Ad;
+    Hd = Bd + H;
+    r0_r = Gd + Cd;
+    r7_r = Gd - Cd;
+    r1_r = Add + Hd;
+    r2_r = Add - Hd;
+    r3_r = Ed + Dd;
+    r4_r = Ed - Dd;
+    r5_r = Fd + Bdd;
+    r6_r = Fd - Bdd;
+
+    /* Left part */
+    A = ((r1_l * cnst64277w) >> 16) + ((r7_l * cnst12785w) >> 16);
+    B = ((r1_l * cnst12785w) >> 16) - ((r7_l * cnst64277w) >> 16);
+    C = ((r3_l * cnst54491w) >> 16) + ((r5_l * cnst36410w) >> 16);
+    D = ((r5_l * cnst54491w) >> 16) - ((r3_l * cnst36410w) >> 16);
+    Ad = ((A - C) * cnst46341w) >> 16;
+    Bd = ((B - D) * cnst46341w) >> 16;
+    Cd = A + C;
+    Dd = B + D;
+    E = ((r0_l + r4_l) * cnst46341w) >> 16;
+    F = ((r0_l - r4_l) * cnst46341w) >> 16;
+    G = ((r2_l * cnst60547w) >> 16) + ((r6_l * cnst25080w) >> 16);
+    H = ((r2_l * cnst25080w) >> 16) - ((r6_l * cnst60547w) >> 16);
+    Ed = E - G;
+    Gd = E + G;
+    Add = F + Ad;
+    Bdd = Bd - H;
+    Fd = F - Ad;
+    Hd = Bd + H;
+    r0_l = Gd + Cd;
+    r7_l = Gd - Cd;
+    r1_l = Add + Hd;
+    r2_l = Add - Hd;
+    r3_l = Ed + Dd;
+    r4_l = Ed - Dd;
+    r5_l = Fd + Bdd;
+    r6_l = Fd - Bdd;
+
+    /* Row 0 to 3 */
+    TRANSPOSE4x4_SW_SW(r0_r, r1_r, r2_r, r3_r,
+                       r0_r, r1_r, r2_r, r3_r);
+    TRANSPOSE4x4_SW_SW(r0_l, r1_l, r2_l, r3_l,
+                       r0_l, r1_l, r2_l, r3_l);
+    A = ((r1_r * cnst64277w) >> 16) + ((r3_l * cnst12785w) >> 16);
+    B = ((r1_r * cnst12785w) >> 16) - ((r3_l * cnst64277w) >> 16);
+    C = ((r3_r * cnst54491w) >> 16) + ((r1_l * cnst36410w) >> 16);
+    D = ((r1_l * cnst54491w) >> 16) - ((r3_r * cnst36410w) >> 16);
+    Ad = ((A - C) * cnst46341w) >> 16;
+    Bd = ((B - D) * cnst46341w) >> 16;
+    Cd = A + C;
+    Dd = B + D;
+    E = ((r0_r + r0_l) * cnst46341w) >> 16;
+    E += cnst8w;
+    F = ((r0_r - r0_l) * cnst46341w) >> 16;
+    F += cnst8w;
+    if (type == 1) { // HACK
+        E += cnst2048w;
+        F += cnst2048w;
+    }
+    G = ((r2_r * cnst60547w) >> 16) + ((r2_l * cnst25080w) >> 16);
+    H = ((r2_r * cnst25080w) >> 16) - ((r2_l * cnst60547w) >> 16);
+    Ed = E - G;
+    Gd = E + G;
+    Add = F + Ad;
+    Bdd = Bd - H;
+    Fd = F - Ad;
+    Hd = Bd + H;
+    A = (Gd + Cd) >> 4;
+    B = (Gd - Cd) >> 4;
+    C = (Add + Hd) >> 4;
+    D = (Add - Hd) >> 4;
+    E = (Ed + Dd) >> 4;
+    F = (Ed - Dd) >> 4;
+    G = (Fd + Bdd) >> 4;
+    H = (Fd - Bdd) >> 4;
+    if (type != 1) {
+        LD_SB8(dst, stride, d0, d1, d2, d3, d4, d5, d6, d7);
+        ILVR_B4_SW(zero, d0, zero, d1, zero, d2, zero, d3,
+                   f0, f1, f2, f3);
+        ILVR_B4_SW(zero, d4, zero, d5, zero, d6, zero, d7,
+                   f4, f5, f6, f7);
+        ILVR_H4_SW(zero, f0, zero, f1, zero, f2, zero, f3,
+                   c0, c1, c2, c3);
+        ILVR_H4_SW(zero, f4, zero, f5, zero, f6, zero, f7,
+                   c4, c5, c6, c7);
+        A += c0;
+        B += c7;
+        C += c1;
+        D += c2;
+        E += c3;
+        F += c4;
+        G += c5;
+        H += c6;
+    }
+    A = CLIP_SW_0_255(A);
+    B = CLIP_SW_0_255(B);
+    C = CLIP_SW_0_255(C);
+    D = CLIP_SW_0_255(D);
+    E = CLIP_SW_0_255(E);
+    F = CLIP_SW_0_255(F);
+    G = CLIP_SW_0_255(G);
+    H = CLIP_SW_0_255(H);
+    sign_l = __msa_or_v((v16u8)r1_r, (v16u8)r2_r);
+    sign_l = __msa_or_v(sign_l, (v16u8)r3_r);
+    sign_l = __msa_or_v(sign_l, (v16u8)r0_l);
+    sign_l = __msa_or_v(sign_l, (v16u8)r1_l);
+    sign_l = __msa_or_v(sign_l, (v16u8)r2_l);
+    sign_l = __msa_or_v(sign_l, (v16u8)r3_l);
+    sign_t = __msa_ceqi_w((v4i32)sign_l, 0);
+    Add = ((r0_r * cnst46341w) + (8 << 16)) >> 20;
+    if (type == 1) {
+        Bdd = Add + cnst128w;
+        Bdd = CLIP_SW_0_255(Bdd);
+        Ad = Bdd;
+        Bd = Bdd;
+        Cd = Bdd;
+        Dd = Bdd;
+        Ed = Bdd;
+        Fd = Bdd;
+        Gd = Bdd;
+        Hd = Bdd;
+    } else {
+        Ad = Add + c0;
+        Bd = Add + c1;
+        Cd = Add + c2;
+        Dd = Add + c3;
+        Ed = Add + c4;
+        Fd = Add + c5;
+        Gd = Add + c6;
+        Hd = Add + c7;
+        Ad = CLIP_SW_0_255(Ad);
+        Bd = CLIP_SW_0_255(Bd);
+        Cd = CLIP_SW_0_255(Cd);
+        Dd = CLIP_SW_0_255(Dd);
+        Ed = CLIP_SW_0_255(Ed);
+        Fd = CLIP_SW_0_255(Fd);
+        Gd = CLIP_SW_0_255(Gd);
+        Hd = CLIP_SW_0_255(Hd);
+    }
+    Ad = (v4i32)__msa_and_v((v16u8)Ad, (v16u8)sign_t);
+    Bd = (v4i32)__msa_and_v((v16u8)Bd, (v16u8)sign_t);
+    Cd = (v4i32)__msa_and_v((v16u8)Cd, (v16u8)sign_t);
+    Dd = (v4i32)__msa_and_v((v16u8)Dd, (v16u8)sign_t);
+    Ed = (v4i32)__msa_and_v((v16u8)Ed, (v16u8)sign_t);
+    Fd = (v4i32)__msa_and_v((v16u8)Fd, (v16u8)sign_t);
+    Gd = (v4i32)__msa_and_v((v16u8)Gd, (v16u8)sign_t);
+    Hd = (v4i32)__msa_and_v((v16u8)Hd, (v16u8)sign_t);
+    sign_t = __msa_ceqi_w(sign_t, 0);
+    A = (v4i32)__msa_and_v((v16u8)A, (v16u8)sign_t);
+    B = (v4i32)__msa_and_v((v16u8)B, (v16u8)sign_t);
+    C = (v4i32)__msa_and_v((v16u8)C, (v16u8)sign_t);
+    D = (v4i32)__msa_and_v((v16u8)D, (v16u8)sign_t);
+    E = (v4i32)__msa_and_v((v16u8)E, (v16u8)sign_t);
+    F = (v4i32)__msa_and_v((v16u8)F, (v16u8)sign_t);
+    G = (v4i32)__msa_and_v((v16u8)G, (v16u8)sign_t);
+    H = (v4i32)__msa_and_v((v16u8)H, (v16u8)sign_t);
+    r0_r = Ad + A;
+    r1_r = Bd + C;
+    r2_r = Cd + D;
+    r3_r = Dd + E;
+    r0_l = Ed + F;
+    r1_l = Fd + G;
+    r2_l = Gd + H;
+    r3_l = Hd + B;
+
+    /* Row 4 to 7 */
+    TRANSPOSE4x4_SW_SW(r4_r, r5_r, r6_r, r7_r,
+                       r4_r, r5_r, r6_r, r7_r);
+    TRANSPOSE4x4_SW_SW(r4_l, r5_l, r6_l, r7_l,
+                       r4_l, r5_l, r6_l, r7_l);
+    A = ((r5_r * cnst64277w) >> 16) + ((r7_l * cnst12785w) >> 16);
+    B = ((r5_r * cnst12785w) >> 16) - ((r7_l * cnst64277w) >> 16);
+    C = ((r7_r * cnst54491w) >> 16) + ((r5_l * cnst36410w) >> 16);
+    D = ((r5_l * cnst54491w) >> 16) - ((r7_r * cnst36410w) >> 16);
+    Ad = ((A - C) * cnst46341w) >> 16;
+    Bd = ((B - D) * cnst46341w) >> 16;
+    Cd = A + C;
+    Dd = B + D;
+    E = ((r4_r + r4_l) * cnst46341w) >> 16;
+    E += cnst8w;
+    F = ((r4_r - r4_l) * cnst46341w) >> 16;
+    F += cnst8w;
+    if (type == 1) { // HACK
+        E += cnst2048w;
+        F += cnst2048w;
+    }
+    G = ((r6_r * cnst60547w) >> 16) + ((r6_l * cnst25080w) >> 16);
+    H = ((r6_r * cnst25080w) >> 16) - ((r6_l * cnst60547w) >> 16);
+    Ed = E - G;
+    Gd = E + G;
+    Add = F + Ad;
+    Bdd = Bd - H;
+    Fd = F - Ad;
+    Hd = Bd + H;
+    A = (Gd + Cd) >> 4;
+    B = (Gd - Cd) >> 4;
+    C = (Add + Hd) >> 4;
+    D = (Add - Hd) >> 4;
+    E = (Ed + Dd) >> 4;
+    F = (Ed - Dd) >> 4;
+    G = (Fd + Bdd) >> 4;
+    H = (Fd - Bdd) >> 4;
+    if (type != 1) {
+        ILVL_H4_SW(zero, f0, zero, f1, zero, f2, zero, f3,
+                   c0, c1, c2, c3);
+        ILVL_H4_SW(zero, f4, zero, f5, zero, f6, zero, f7,
+                   c4, c5, c6, c7);
+        A += c0;
+        B += c7;
+        C += c1;
+        D += c2;
+        E += c3;
+        F += c4;
+        G += c5;
+        H += c6;
+    }
+    A = CLIP_SW_0_255(A);
+    B = CLIP_SW_0_255(B);
+    C = CLIP_SW_0_255(C);
+    D = CLIP_SW_0_255(D);
+    E = CLIP_SW_0_255(E);
+    F = CLIP_SW_0_255(F);
+    G = CLIP_SW_0_255(G);
+    H = CLIP_SW_0_255(H);
+    sign_l = __msa_or_v((v16u8)r5_r, (v16u8)r6_r);
+    sign_l = __msa_or_v(sign_l, (v16u8)r7_r);
+    sign_l = __msa_or_v(sign_l, (v16u8)r4_l);
+    sign_l = __msa_or_v(sign_l, (v16u8)r5_l);
+    sign_l = __msa_or_v(sign_l, (v16u8)r6_l);
+    sign_l = __msa_or_v(sign_l, (v16u8)r7_l);
+    sign_t = __msa_ceqi_w((v4i32)sign_l, 0);
+    Add = ((r4_r * cnst46341w) + (8 << 16)) >> 20;
+    if (type == 1) {
+        Bdd = Add + cnst128w;
+        Bdd = CLIP_SW_0_255(Bdd);
+        Ad = Bdd;
+        Bd = Bdd;
+        Cd = Bdd;
+        Dd = Bdd;
+        Ed = Bdd;
+        Fd = Bdd;
+        Gd = Bdd;
+        Hd = Bdd;
+    } else {
+        Ad = Add + c0;
+        Bd = Add + c1;
+        Cd = Add + c2;
+        Dd = Add + c3;
+        Ed = Add + c4;
+        Fd = Add + c5;
+        Gd = Add + c6;
+        Hd = Add + c7;
+        Ad = CLIP_SW_0_255(Ad);
+        Bd = CLIP_SW_0_255(Bd);
+        Cd = CLIP_SW_0_255(Cd);
+        Dd = CLIP_SW_0_255(Dd);
+        Ed = CLIP_SW_0_255(Ed);
+        Fd = CLIP_SW_0_255(Fd);
+        Gd = CLIP_SW_0_255(Gd);
+        Hd = CLIP_SW_0_255(Hd);
+    }
+    Ad = (v4i32)__msa_and_v((v16u8)Ad, (v16u8)sign_t);
+    Bd = (v4i32)__msa_and_v((v16u8)Bd, (v16u8)sign_t);
+    Cd = (v4i32)__msa_and_v((v16u8)Cd, (v16u8)sign_t);
+    Dd = (v4i32)__msa_and_v((v16u8)Dd, (v16u8)sign_t);
+    Ed = (v4i32)__msa_and_v((v16u8)Ed, (v16u8)sign_t);
+    Fd = (v4i32)__msa_and_v((v16u8)Fd, (v16u8)sign_t);
+    Gd = (v4i32)__msa_and_v((v16u8)Gd, (v16u8)sign_t);
+    Hd = (v4i32)__msa_and_v((v16u8)Hd, (v16u8)sign_t);
+    sign_t = __msa_ceqi_w(sign_t, 0);
+    A = (v4i32)__msa_and_v((v16u8)A, (v16u8)sign_t);
+    B = (v4i32)__msa_and_v((v16u8)B, (v16u8)sign_t);
+    C = (v4i32)__msa_and_v((v16u8)C, (v16u8)sign_t);
+    D = (v4i32)__msa_and_v((v16u8)D, (v16u8)sign_t);
+    E = (v4i32)__msa_and_v((v16u8)E, (v16u8)sign_t);
+    F = (v4i32)__msa_and_v((v16u8)F, (v16u8)sign_t);
+    G = (v4i32)__msa_and_v((v16u8)G, (v16u8)sign_t);
+    H = (v4i32)__msa_and_v((v16u8)H, (v16u8)sign_t);
+    r4_r = Ad + A;
+    r5_r = Bd + C;
+    r6_r = Cd + D;
+    r7_r = Dd + E;
+    r4_l = Ed + F;
+    r5_l = Fd + G;
+    r6_l = Gd + H;
+    r7_l = Hd + B;
+    VSHF_B2_SB(r0_r, r4_r, r1_r, r5_r, mask, mask, d0, d1);
+    VSHF_B2_SB(r2_r, r6_r, r3_r, r7_r, mask, mask, d2, d3);
+    VSHF_B2_SB(r0_l, r4_l, r1_l, r5_l, mask, mask, d4, d5);
+    VSHF_B2_SB(r2_l, r6_l, r3_l, r7_l, mask, mask, d6, d7);
+
+    /* Final sequence of operations over-write original dst */
+    ST8x1_UB(d0, dst);
+    ST8x1_UB(d1, dst + nstride);
+    nstride += stride;
+    ST8x1_UB(d2, dst + nstride);
+    nstride += stride;
+    ST8x1_UB(d3, dst + nstride);
+    nstride += stride;
+    ST8x1_UB(d4, dst + nstride);
+    nstride += stride;
+    ST8x1_UB(d5, dst + nstride);
+    nstride += stride;
+    ST8x1_UB(d6, dst + nstride);
+    nstride += stride;
+    ST8x1_UB(d7, dst + nstride);
+}
+
+void ff_vp3_idct_put_msa(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+    idct_msa(dest, line_size, block, 1);
+    memset(block, 0, sizeof(*block) * 64);
+}
+
+void ff_vp3_idct_add_msa(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+    idct_msa(dest, line_size, block, 2);
+    memset(block, 0, sizeof(*block) * 64);
+}
+
+void ff_vp3_idct_dc_add_msa(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+    int i = (block[0] + 15) >> 5;
+    v4i32 dc = {i, i, i, i};
+    v16i8 d0, d1, d2, d3, d4, d5, d6, d7;
+    v4i32 c0, c1, c2, c3, c4, c5, c6, c7;
+    v4i32 e0, e1, e2, e3, e4, e5, e6, e7;
+    v4i32 r0, r1, r2, r3, r4, r5, r6, r7;
+    v16i8 mask = {0, 4, 8, 12, 16, 20, 24, 28, 0, 0, 0, 0, 0, 0, 0, 0};
+    v16i8 zero = {0};
+    int nstride = line_size;
+
+    LD_SB8(dest, line_size, d0, d1, d2, d3, d4, d5, d6, d7);
+    ILVR_B4_SW(zero, d0, zero, d1, zero, d2, zero, d3,
+               c0, c1, c2, c3);
+    ILVR_B4_SW(zero, d4, zero, d5, zero, d6, zero, d7,
+               c4, c5, c6, c7);
+    /* Right part */
+    ILVR_H4_SW(zero, c0, zero, c1, zero, c2, zero, c3,
+               e0, e1, e2, e3);
+    ILVR_H4_SW(zero, c4, zero, c5, zero, c6, zero, c7,
+               e4, e5, e6, e7);
+    e0 += dc;
+    e1 += dc;
+    e2 += dc;
+    e3 += dc;
+    e4 += dc;
+    e5 += dc;
+    e6 += dc;
+    e7 += dc;
+    e0 = CLIP_SW_0_255(e0);
+    e1 = CLIP_SW_0_255(e1);
+    e2 = CLIP_SW_0_255(e2);
+    e3 = CLIP_SW_0_255(e3);
+    e4 = CLIP_SW_0_255(e4);
+    e5 = CLIP_SW_0_255(e5);
+    e6 = CLIP_SW_0_255(e6);
+    e7 = CLIP_SW_0_255(e7);
+
+    /* Left part */
+    ILVL_H4_SW(zero, c0, zero, c1, zero, c2, zero, c3,
+               r0, r1, r2, r3);
+    ILVL_H4_SW(zero, c4, zero, c5, zero, c6, zero, c7,
+               r4, r5, r6, r7);
+    r0 += dc;
+    r1 += dc;
+    r2 += dc;
+    r3 += dc;
+    r4 += dc;
+    r5 += dc;
+    r6 += dc;
+    r7 += dc;
+    r0 = CLIP_SW_0_255(r0);
+    r1 = CLIP_SW_0_255(r1);
+    r2 = CLIP_SW_0_255(r2);
+    r3 = CLIP_SW_0_255(r3);
+    r4 = CLIP_SW_0_255(r4);
+    r5 = CLIP_SW_0_255(r5);
+    r6 = CLIP_SW_0_255(r6);
+    r7 = CLIP_SW_0_255(r7);
+    VSHF_B2_SB(e0, r0, e1, r1, mask, mask, d0, d1);
+    VSHF_B2_SB(e2, r2, e3, r3, mask, mask, d2, d3);
+    VSHF_B2_SB(e4, r4, e5, r5, mask, mask, d4, d5);
+    VSHF_B2_SB(e6, r6, e7, r7, mask, mask, d6, d7);
+
+    /* Final sequence of operations over-write original dst */
+    ST8x1_UB(d0, dest);
+    ST8x1_UB(d1, dest + nstride);
+    nstride += line_size;
+    ST8x1_UB(d2, dest + nstride);
+    nstride += line_size;
+    ST8x1_UB(d3, dest + nstride);
+    nstride += line_size;
+    ST8x1_UB(d4, dest + nstride);
+    nstride += line_size;
+    ST8x1_UB(d5, dest + nstride);
+    nstride += line_size;
+    ST8x1_UB(d6, dest + nstride);
+    nstride += line_size;
+    ST8x1_UB(d7, dest + nstride);
+
+    block[0] = 0;
+}
+
+void ff_vp3_v_loop_filter_msa(uint8_t *first_pixel, ptrdiff_t stride,
+                              int *bounding_values)
+{
+    int nstride = -stride;
+    v4i32 e0, e1, f0, f1, g0, g1;
+    v16i8 zero = {0};
+    v16i8 d0, d1, d2, d3;
+    v8i16 c0, c1, c2, c3;
+    v8i16 r0;
+    v8i16 cnst3h = {3, 3, 3, 3, 3, 3, 3, 3},
+          cnst4h = {4, 4, 4, 4, 4, 4, 4, 4};
+    v16i8 mask = {0, 4, 8, 12, 16, 20, 24, 28, 0, 0, 0, 0, 0, 0, 0, 0};
+    int16_t temp_16[8];
+    int temp_32[8];
+
+    LD_SB4(first_pixel + nstride * 2, stride, d0, d1, d2, d3);
+    ILVR_B4_SH(zero, d0, zero, d1, zero, d2, zero, d3,
+               c0, c1, c2, c3);
+    r0 = (c0 - c3) + (c2 - c1) * cnst3h;
+    r0 += cnst4h;
+    r0 = r0 >> 3;
+    /* Get filter_value from bounding_values one by one */
+    ST_SH(r0, temp_16);
+    for (int i = 0; i < 8; i++)
+        temp_32[i] = bounding_values[temp_16[i]];
+    LD_SW2(temp_32, 4, e0, e1);
+    ILVR_H2_SW(zero, c1, zero, c2, f0, g0);
+    ILVL_H2_SW(zero, c1, zero, c2, f1, g1);
+    f0 += e0;
+    f1 += e1;
+    g0 -= e0;
+    g1 -= e1;
+    f0 = CLIP_SW_0_255(f0);
+    f1 = CLIP_SW_0_255(f1);
+    g0 = CLIP_SW_0_255(g0);
+    g1 = CLIP_SW_0_255(g1);
+    VSHF_B2_SB(f0, f1, g0, g1, mask, mask, d1, d2);
+
+    /* Final move to first_pixel */
+    ST8x1_UB(d1, first_pixel + nstride);
+    ST8x1_UB(d2, first_pixel);
+}
+
+void ff_vp3_h_loop_filter_msa(uint8_t *first_pixel, ptrdiff_t stride,
+                              int *bounding_values)
+{
+    v16i8 d0, d1, d2, d3, d4, d5, d6, d7;
+    v8i16 c0, c1, c2, c3, c4, c5, c6, c7;
+    v8i16 r0;
+    v4i32 e0, e1, f0, f1, g0, g1;
+    v16i8 zero = {0};
+    v8i16 cnst3h = {3, 3, 3, 3, 3, 3, 3, 3},
+          cnst4h = {4, 4, 4, 4, 4, 4, 4, 4};
+    v16i8 mask = {0, 16, 4, 20, 8, 24, 12, 28, 0, 0, 0, 0, 0, 0, 0, 0};
+    int16_t temp_16[8];
+    int temp_32[8];
+
+    LD_SB8(first_pixel - 2, stride, d0, d1, d2, d3, d4, d5, d6, d7);
+    ILVR_B4_SH(zero, d0, zero, d1, zero, d2, zero, d3,
+               c0, c1, c2, c3);
+    ILVR_B4_SH(zero, d4, zero, d5, zero, d6, zero, d7,
+               c4, c5, c6, c7);
+    TRANSPOSE8x8_SH_SH(c0, c1, c2, c3, c4, c5, c6, c7,
+                       c0, c1, c2, c3, c4, c5, c6, c7);
+    r0 = (c0 - c3) + (c2 - c1) * cnst3h;
+    r0 += cnst4h;
+    r0 = r0 >> 3;
+
+    /* Get filter_value from bounding_values one by one */
+    ST_SH(r0, temp_16);
+    for (int i = 0; i < 8; i++)
+        temp_32[i] = bounding_values[temp_16[i]];
+    LD_SW2(temp_32, 4, e0, e1);
+    ILVR_H2_SW(zero, c1, zero, c2, f0, g0);
+    ILVL_H2_SW(zero, c1, zero, c2, f1, g1);
+    f0 += e0;
+    f1 += e1;
+    g0 -= e0;
+    g1 -= e1;
+    f0 = CLIP_SW_0_255(f0);
+    f1 = CLIP_SW_0_255(f1);
+    g0 = CLIP_SW_0_255(g0);
+    g1 = CLIP_SW_0_255(g1);
+    VSHF_B2_SB(f0, g0, f1, g1, mask, mask, d1, d2);
+    /* Final move to first_pixel */
+    ST2x4_UB(d1, 0, first_pixel - 1, stride);
+    ST2x4_UB(d2, 0, first_pixel - 1 + 4 * stride, stride);
+}
+
+void ff_put_no_rnd_pixels_l2_msa(uint8_t *dst, const uint8_t *src1,
+                                 const uint8_t *src2, ptrdiff_t stride, int h)
+{
+    if (h == 8) {
+        v16i8 d0, d1, d2, d3, d4, d5, d6, d7;
+        v16i8 c0, c1, c2, c3;
+        v4i32 a0, a1, a2, a3, b0, b1, b2, b3;
+        v4i32 e0, e1, e2;
+        v4i32 f0, f1, f2;
+        v4u32 t0, t1, t2, t3;
+        v16i8 mask = {0, 1, 2, 3, 16, 17, 18, 19, 4, 5, 6, 7, 20, 21, 22, 23};
+        int32_t value = 0xfefefefe;
+        v4i32 fmask = {value, value, value, value};
+
+        LD_SB8(src1, stride, d0, d1, d2, d3, d4, d5, d6, d7);
+        VSHF_B2_SB(d0, d1, d2, d3, mask, mask, c0, c1);
+        VSHF_B2_SB(d4, d5, d6, d7, mask, mask, c2, c3);
+        a0 = (v4i32) __msa_pckev_d((v2i64)c1, (v2i64)c0);
+        a2 = (v4i32) __msa_pckod_d((v2i64)c1, (v2i64)c0);
+        a1 = (v4i32) __msa_pckev_d((v2i64)c3, (v2i64)c2);
+        a3 = (v4i32) __msa_pckod_d((v2i64)c3, (v2i64)c2);
+
+        LD_SB8(src2, stride, d0, d1, d2, d3, d4, d5, d6, d7);
+        VSHF_B2_SB(d0, d1, d2, d3, mask, mask, c0, c1);
+        VSHF_B2_SB(d4, d5, d6, d7, mask, mask, c2, c3);
+        b0 = (v4i32) __msa_pckev_d((v2i64)c1, (v2i64)c0);
+        b2 = (v4i32) __msa_pckod_d((v2i64)c1, (v2i64)c0);
+        b1 = (v4i32) __msa_pckev_d((v2i64)c3, (v2i64)c2);
+        b3 = (v4i32) __msa_pckod_d((v2i64)c3, (v2i64)c2);
+
+        e0 = (v4i32) __msa_xor_v((v16u8)a0, (v16u8)b0);
+        e0 = (v4i32) __msa_and_v((v16u8)e0, (v16u8)fmask);
+        t0 = ((v4u32)e0) >> 1;
+        e2 = (v4i32) __msa_and_v((v16u8)a0, (v16u8)b0);
+        t0 = t0 + (v4u32)e2;
+
+        e1 = (v4i32) __msa_xor_v((v16u8)a1, (v16u8)b1);
+        e1 = (v4i32) __msa_and_v((v16u8)e1, (v16u8)fmask);
+        t1 = ((v4u32)e1) >> 1;
+        e2 = (v4i32) __msa_and_v((v16u8)a1, (v16u8)b1);
+        t1 = t1 + (v4u32)e2;
+
+        f0 = (v4i32) __msa_xor_v((v16u8)a2, (v16u8)b2);
+        f0 = (v4i32) __msa_and_v((v16u8)f0, (v16u8)fmask);
+        t2 = ((v4u32)f0) >> 1;
+        f2 = (v4i32) __msa_and_v((v16u8)a2, (v16u8)b2);
+        t2 = t2 + (v4u32)f2;
+
+        f1 = (v4i32) __msa_xor_v((v16u8)a3, (v16u8)b3);
+        f1 = (v4i32) __msa_and_v((v16u8)f1, (v16u8)fmask);
+        t3 = ((v4u32)f1) >> 1;
+        f2 = (v4i32) __msa_and_v((v16u8)a3, (v16u8)b3);
+        t3 = t3 + (v4u32)f2;
+
+        ST4x4_UB(t0, t0, 0, 1, 2, 3, dst, stride);
+        ST4x4_UB(t1, t1, 0, 1, 2, 3, dst + 4 * stride, stride);
+        ST4x4_UB(t2, t2, 0, 1, 2, 3, dst + 4, stride);
+        ST4x4_UB(t3, t3, 0, 1, 2, 3, dst + 4 + 4 * stride, stride);
+    } else {
+        int i;
+
+        for (i = 0; i < h; i++) {
+            uint32_t a, b;
+
+            a = AV_RN32(&src1[i * stride]);
+            b = AV_RN32(&src2[i * stride]);
+            AV_WN32A(&dst[i * stride], no_rnd_avg32(a, b));
+            a = AV_RN32(&src1[i * stride + 4]);
+            b = AV_RN32(&src2[i * stride + 4]);
+            AV_WN32A(&dst[i * stride + 4], no_rnd_avg32(a, b));
+        }
+    }
+}
diff --git a/libavcodec/mips/vp3dsp_init_mips.c b/libavcodec/mips/vp3dsp_init_mips.c
new file mode 100644
index 0000000000..d72e8ece71
--- /dev/null
+++ b/libavcodec/mips/vp3dsp_init_mips.c
@@ -0,0 +1,46 @@
+
+/*
+ * Copyright (c) 2018 gxw <guxiwei-hf@loongson.cn>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "libavcodec/avcodec.h"
+#include "libavcodec/vp3dsp.h"
+#include "vp3dsp_mips.h"
+
+#if HAVE_MSA
+static av_cold void vp3dsp_init_msa(VP3DSPContext *c, int flags)
+{
+    c->put_no_rnd_pixels_l2 = ff_put_no_rnd_pixels_l2_msa;
+
+    c->idct_add      = ff_vp3_idct_add_msa;
+    c->idct_put      = ff_vp3_idct_put_msa;
+    c->idct_dc_add   = ff_vp3_idct_dc_add_msa;
+    c->v_loop_filter = ff_vp3_v_loop_filter_msa;
+    c->h_loop_filter = ff_vp3_h_loop_filter_msa;
+}
+#endif /* HAVE_MSA */
+
+av_cold void ff_vp3dsp_init_mips(VP3DSPContext *c, int flags)
+{
+#if HAVE_MSA
+    vp3dsp_init_msa(c, flags);
+#endif /* HAVE_MSA */
+}
diff --git a/libavcodec/mips/vp3dsp_mips.h b/libavcodec/mips/vp3dsp_mips.h
new file mode 100644
index 0000000000..7750d5c53d
--- /dev/null
+++ b/libavcodec/mips/vp3dsp_mips.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2018 gxw <guxiwei-hf@loongson.cn>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_MIPS_VP3DSP_MIPS_H
+#define AVCODEC_MIPS_VP3DSP_MIPS_H
+
+#include "libavcodec/vp3dsp.h"
+#include <string.h>
+
+void ff_vp3_idct_add_msa(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_vp3_idct_put_msa(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_vp3_idct_dc_add_msa(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
+void ff_vp3_v_loop_filter_msa(uint8_t *first_pixel, ptrdiff_t stride,
+                              int *bounding_values);
+void ff_put_no_rnd_pixels_l2_msa(uint8_t *dst, const uint8_t *src1,
+                                 const uint8_t *src2, ptrdiff_t stride, int h);
+void ff_vp3_h_loop_filter_msa(uint8_t *first_pixel, ptrdiff_t stride,
+                              int *bounding_values);
+
+#endif /* #ifndef AVCODEC_MIPS_VP3DSP_MIPS_H */
diff --git a/libavcodec/vp3dsp.c b/libavcodec/vp3dsp.c
index fdaa292d37..cdf7d6490e 100644
--- a/libavcodec/vp3dsp.c
+++ b/libavcodec/vp3dsp.c
@@ -293,4 +293,6 @@ av_cold void ff_vp3dsp_init(VP3DSPContext *c, int flags)
         ff_vp3dsp_init_ppc(c, flags);
     if (ARCH_X86)
         ff_vp3dsp_init_x86(c, flags);
+    if (ARCH_MIPS)
+        ff_vp3dsp_init_mips(c, flags);
 }
diff --git a/libavcodec/vp3dsp.h b/libavcodec/vp3dsp.h
index 2fdad162ca..f5f042dc0c 100644
--- a/libavcodec/vp3dsp.h
+++ b/libavcodec/vp3dsp.h
@@ -49,5 +49,6 @@ void ff_vp3dsp_init(VP3DSPContext *c, int flags);
 void ff_vp3dsp_init_arm(VP3DSPContext *c, int flags);
 void ff_vp3dsp_init_ppc(VP3DSPContext *c, int flags);
 void ff_vp3dsp_init_x86(VP3DSPContext *c, int flags);
+void ff_vp3dsp_init_mips(VP3DSPContext *c, int flags);
 
 #endif /* AVCODEC_VP3DSP_H */