avcodec/mips: MSA (MIPS-SIMD-Arch) optimizations for H263 lpf functions

This patch adds MSA (MIPS-SIMD-Arch) optimizations for H263 lpf functions in new file h263dsp_msa.c

Signed-off-by: Shivraj Patil <shivraj.patil@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

4 files changed, 238 insertions, 0 deletions

diff --git a/libavcodec/mips/Makefile b/libavcodec/mips/Makefile
index d80d4e62a8..63c7298122 100644
--- a/libavcodec/mips/Makefile
+++ b/libavcodec/mips/Makefile
@@ -24,6 +24,7 @@ OBJS-$(CONFIG_H264DSP)                    += mips/h264dsp_init_mips.o
 OBJS-$(CONFIG_H264QPEL)                   += mips/h264qpel_init_mips.o
 OBJS-$(CONFIG_H264CHROMA)                 += mips/h264chroma_init_mips.o
 OBJS-$(CONFIG_H264PRED)                   += mips/h264pred_init_mips.o
+OBJS-$(CONFIG_H263DSP)                    += mips/h263dsp_init_mips.o
 MSA-OBJS-$(CONFIG_HEVC_DECODER)           += mips/hevcdsp_msa.o            \
                                              mips/hevc_mc_uni_msa.o        \
                                              mips/hevc_mc_uniw_msa.o       \
@@ -37,5 +38,6 @@ MSA-OBJS-$(CONFIG_H264DSP)                += mips/h264dsp_msa.o            \
 MSA-OBJS-$(CONFIG_H264QPEL)               += mips/h264qpel_msa.o
 MSA-OBJS-$(CONFIG_H264CHROMA)             += mips/h264chroma_msa.o
 MSA-OBJS-$(CONFIG_H264PRED)               += mips/h264pred_msa.o
+MSA-OBJS-$(CONFIG_H263DSP)                += mips/h263dsp_msa.o
 LOONGSON3-OBJS-$(CONFIG_H264DSP)          += mips/h264dsp_mmi.o
 LOONGSON3-OBJS-$(CONFIG_H264CHROMA)       += mips/h264chroma_mmi.o
diff --git a/libavcodec/mips/h263dsp_init_mips.c b/libavcodec/mips/h263dsp_init_mips.c
new file mode 100644
index 0000000000..09bd93707d
--- /dev/null
+++ b/libavcodec/mips/h263dsp_init_mips.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2015 Manojkumar Bhosale (Manojkumar.Bhosale@imgtec.com)
+ *
+ * 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 "h263dsp_mips.h"
+
+#if HAVE_MSA
+static av_cold void h263dsp_init_msa(H263DSPContext *c)
+{
+    c->h263_h_loop_filter = ff_h263_h_loop_filter_msa;
+    c->h263_v_loop_filter = ff_h263_v_loop_filter_msa;
+}
+#endif  // #if HAVE_MSA
+
+av_cold void ff_h263dsp_init_mips(H263DSPContext *c)
+{
+#if HAVE_MSA
+    h263dsp_init_msa(c);
+#endif  // #if HAVE_MSA
+}
diff --git a/libavcodec/mips/h263dsp_mips.h b/libavcodec/mips/h263dsp_mips.h
new file mode 100644
index 0000000000..99a43cd44a
--- /dev/null
+++ b/libavcodec/mips/h263dsp_mips.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2015 Manojkumar Bhosale (Manojkumar.Bhosale@imgtec.com)
+ *
+ * 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_H263DSP_MIPS_H
+#define AVCODEC_MIPS_H263DSP_MIPS_H
+
+#include "libavcodec/mpegvideo.h"
+
+void ff_h263_h_loop_filter_msa(uint8_t *src, int stride, int q_scale);
+void ff_h263_v_loop_filter_msa(uint8_t *src, int stride, int q_scale);
+void ff_dct_unquantize_mpeg2_inter_msa(MpegEncContext *s, int16_t *block,
+                                       int32_t index, int32_t q_scale);
+void ff_dct_unquantize_h263_inter_msa(MpegEncContext *s, int16_t *block,
+                                      int32_t index, int32_t q_scale);
+void ff_dct_unquantize_h263_intra_msa(MpegEncContext *s, int16_t *block,
+                                      int32_t index, int32_t q_scale);
+int ff_pix_sum_msa(uint8_t *pix, int line_size);
+
+#endif  // #ifndef AVCODEC_MIPS_H263DSP_MIPS_H
diff --git a/libavcodec/mips/h263dsp_msa.c b/libavcodec/mips/h263dsp_msa.c
new file mode 100644
index 0000000000..472bcbd70a
--- /dev/null
+++ b/libavcodec/mips/h263dsp_msa.c
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 2015 Manojkumar Bhosale (Manojkumar.Bhosale@imgtec.com)
+ *
+ * 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 "libavutil/mips/generic_macros_msa.h"
+#include "h263dsp_mips.h"
+
+static const uint8_t h263_loop_filter_strength_msa[32] = {
+    0, 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 7,
+    7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12
+};
+
+static void h263_h_loop_filter_msa(uint8_t *src, int32_t stride, int32_t qscale)
+{
+    int32_t strength = h263_loop_filter_strength_msa[qscale];
+    v16u8 in0, in1, in2, in3, in4, in5, in6, in7;
+    v8i16 temp0, temp1, temp2;
+    v8i16 diff0, diff2, diff4, diff6, diff8;
+    v8i16 d0, a_d0, str_x2, str;
+
+    src -= 2;
+    LD_UB8(src, stride, in0, in1, in2, in3, in4, in5, in6, in7);
+    TRANSPOSE8x4_UB_UB(in0, in1, in2, in3, in4, in5, in6, in7,
+                       in0, in3, in2, in1);
+
+    temp0 = (v8i16) __msa_ilvr_b((v16i8) in0, (v16i8) in1);
+    a_d0 = __msa_hsub_u_h((v16u8) temp0, (v16u8) temp0);
+    temp2 = (v8i16) __msa_ilvr_b((v16i8) in2, (v16i8) in3);
+    temp2 = __msa_hsub_u_h((v16u8) temp2, (v16u8) temp2);
+    temp2 <<= 2;
+    diff0 = a_d0 + temp2;
+    diff2 = -(-diff0 >> 3);
+    str_x2 = __msa_fill_h(-(strength << 1));
+    temp0 = (str_x2 <= diff2);
+    diff2 = (v8i16) __msa_bmz_v((v16u8) diff2, (v16u8) temp0, (v16u8) temp0);
+    temp2 = str_x2 - diff2;
+    str = __msa_fill_h(-strength);
+    temp0 = (diff2 < str);
+    diff2 = (v8i16) __msa_bmnz_v((v16u8) diff2, (v16u8) temp2, (v16u8) temp0);
+    diff4 = diff0 >> 3;
+    str_x2 = __msa_fill_h(strength << 1);
+    temp0 = (diff4 <= str_x2);
+    diff4 = (v8i16) __msa_bmz_v((v16u8) diff4, (v16u8) temp0, (v16u8) temp0);
+    temp2 = str_x2 - diff4;
+    str = __msa_fill_h(strength);
+    temp0 = (str < diff4);
+    diff4 = (v8i16) __msa_bmnz_v((v16u8) diff4, (v16u8) temp2, (v16u8) temp0);
+    temp0 = __msa_clti_s_h(diff0, 0);
+    d0 = (v8i16) __msa_bmnz_v((v16u8) diff4, (v16u8) diff2, (v16u8) temp0);
+    diff2 = -diff2 >> 1;
+    diff4 >>= 1;
+    diff8 = (v8i16) __msa_bmnz_v((v16u8) diff4, (v16u8) diff2, (v16u8) temp0);
+    diff6 = (-a_d0) >> 2;
+    diff6 = -(diff6);
+    temp2 = -diff8;
+    temp0 = (diff6 < temp2);
+    diff6 = (v8i16) __msa_bmnz_v((v16u8) diff6, (v16u8) temp2, (v16u8) temp0);
+    diff2 = a_d0 >> 2;
+    temp0 = (diff2 <= diff8);
+    diff2 = (v8i16) __msa_bmz_v((v16u8) diff2, (v16u8) diff8, (v16u8) temp0);
+    temp0 = __msa_clti_s_h(a_d0, 0);
+    diff6 = (v8i16) __msa_bmz_v((v16u8) diff6, (v16u8) diff2, (v16u8) temp0);
+    PCKEV_B2_SH(a_d0, diff6, a_d0, d0, diff6, d0);
+    in0 = (v16u8) ((v16i8) in0 - (v16i8) diff6);
+    in1 = (v16u8) ((v16i8) in1 + (v16i8) diff6);
+    in3 = __msa_xori_b(in3, 128);
+    in3 = (v16u8) __msa_adds_s_b((v16i8) in3, (v16i8) d0);
+    in3 = __msa_xori_b(in3, 128);
+    in2 = __msa_subsus_u_b(in2, (v16i8) d0);
+    ILVR_B2_SH(in3, in0, in1, in2, temp0, temp1);
+    in0 = (v16u8) __msa_ilvr_h(temp1, temp0);
+    in3 = (v16u8) __msa_ilvl_h(temp1, temp0);
+    ST4x4_UB(in0, in0, 0, 1, 2, 3, src, stride);
+    src += 4 * stride;
+    ST4x4_UB(in3, in3, 0, 1, 2, 3, src, stride);
+    src += 4 * stride;
+}
+
+static void h263_v_loop_filter_msa(uint8_t *src, int32_t stride, int32_t qscale)
+{
+    int32_t strength = h263_loop_filter_strength_msa[qscale];
+    uint64_t res0, res1, res2, res3;
+    v16u8 in0, in1, in2, in3;
+    v8i16 temp0, temp2, diff0, diff2, diff4, diff6, diff8;
+    v8i16 d0, a_d0, str_x2, str;
+
+    src -= 2 * stride;
+    LD_UB4(src, stride, in0, in3, in2, in1);
+    temp0 = (v8i16) __msa_ilvr_b((v16i8) in0, (v16i8) in1);
+    a_d0 = __msa_hsub_u_h((v16u8) temp0, (v16u8) temp0);
+    temp2 = (v8i16) __msa_ilvr_b((v16i8) in2, (v16i8) in3);
+    temp2 = __msa_hsub_u_h((v16u8) temp2, (v16u8) temp2);
+    temp2 <<= 2;
+    diff0 = a_d0 + temp2;
+    diff2 = -(-diff0 >> 3);
+    str_x2 = __msa_fill_h(-(strength << 1));
+    temp0 = (str_x2 <= diff2);
+    diff2 = (v8i16) __msa_bmz_v((v16u8) diff2, (v16u8) temp0, (v16u8) temp0);
+    temp2 = str_x2 - diff2;
+    str = __msa_fill_h(-strength);
+    temp0 = (diff2 < str);
+    diff2 = (v8i16) __msa_bmnz_v((v16u8) diff2, (v16u8) temp2, (v16u8) temp0);
+    diff4 = diff0 >> 3;
+    str_x2 = __msa_fill_h(strength << 1);
+    temp0 = (diff4 <= str_x2);
+    diff4 = (v8i16) __msa_bmz_v((v16u8) diff4, (v16u8) temp0, (v16u8) temp0);
+    temp2 = str_x2 - diff4;
+    str = __msa_fill_h(strength);
+    temp0 = (str < diff4);
+    diff4 = (v8i16) __msa_bmnz_v((v16u8) diff4, (v16u8) temp2, (v16u8) temp0);
+    temp0 = __msa_clti_s_h(diff0, 0);
+    d0 = (v8i16) __msa_bmnz_v((v16u8) diff4, (v16u8) diff2, (v16u8) temp0);
+    diff2 = -diff2 >> 1;
+    diff4 >>= 1;
+    diff8 = (v8i16) __msa_bmnz_v((v16u8) diff4, (v16u8) diff2, (v16u8) temp0);
+    diff6 = (-a_d0) >> 2;
+    diff6 = -(diff6);
+    temp2 = -diff8;
+    temp0 = (diff6 < temp2);
+    diff6 = (v8i16) __msa_bmnz_v((v16u8) diff6, (v16u8) temp2, (v16u8) temp0);
+    diff2 = a_d0 >> 2;
+    temp0 = (diff2 <= diff8);
+    diff2 = (v8i16) __msa_bmz_v((v16u8) diff2, (v16u8) diff8, (v16u8) temp0);
+    temp0 = __msa_clti_s_h(a_d0, 0);
+    diff6 = (v8i16) __msa_bmz_v((v16u8) diff6, (v16u8) diff2, (v16u8) temp0);
+    PCKEV_B2_SH(a_d0, diff6, a_d0, d0, diff6, d0);
+    in0 = (v16u8) ((v16i8) in0 - (v16i8) diff6);
+    in1 = (v16u8) ((v16i8) in1 + (v16i8) diff6);
+    in3 = __msa_xori_b(in3, 128);
+    in3 = (v16u8) __msa_adds_s_b((v16i8) in3, (v16i8) d0);
+    in3 = __msa_xori_b(in3, 128);
+    in2 = __msa_subsus_u_b(in2, (v16i8) d0);
+    res0 = __msa_copy_u_d((v2i64) in0, 0);
+    res1 = __msa_copy_u_d((v2i64) in3, 0);
+    res2 = __msa_copy_u_d((v2i64) in2, 0);
+    res3 = __msa_copy_u_d((v2i64) in1, 0);
+    SD4(res0, res1, res2, res3, src, stride);
+}
+
+void ff_h263_h_loop_filter_msa(uint8_t *src, int32_t stride, int32_t q_scale)
+{
+    h263_h_loop_filter_msa(src, stride, q_scale);
+}
+
+void ff_h263_v_loop_filter_msa(uint8_t *src, int32_t stride, int32_t q_scale)
+{
+    h263_v_loop_filter_msa(src, stride, q_scale);
+}