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

This patch adds MSA (MIPS-SIMD-Arch) optimizations for pixblock functions in new file pixblockdsp_msa.c
Adds new generic macros (needed for this patch) in libavutil/mips/generic_macros_msa.h

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

1 files changed, 143 insertions, 0 deletions

diff --git a/libavcodec/mips/pixblockdsp_msa.c b/libavcodec/mips/pixblockdsp_msa.c
new file mode 100644
index 0000000000..966e11a7f5
--- /dev/null
+++ b/libavcodec/mips/pixblockdsp_msa.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2015 Shivraj Patil (Shivraj.Patil@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 "pixblockdsp_mips.h"
+
+static void diff_pixels_msa(int16_t *block, const uint8_t *src1,
+                            const uint8_t *src2, int32_t stride)
+{
+    v16u8 in10, in11, in12, in13, in14, in15, in16, in17;
+    v16u8 in20, in21, in22, in23, in24, in25, in26, in27;
+    v8i16 out0, out1, out2, out3, out4, out5, out6, out7;
+
+    LD_UB8(src1, stride, in10, in11, in12, in13, in14, in15, in16, in17);
+    LD_UB8(src2, stride, in20, in21, in22, in23, in24, in25, in26, in27);
+    ILVR_B4_SH(in10, in20, in11, in21, in12, in22, in13, in23,
+               out0, out1, out2, out3);
+    ILVR_B4_SH(in14, in24, in15, in25, in16, in26, in17, in27,
+               out4, out5, out6, out7);
+    HSUB_UB4_SH(out0, out1, out2, out3, out0, out1, out2, out3);
+    HSUB_UB4_SH(out4, out5, out6, out7, out4, out5, out6, out7);
+    ST_SH8(out0, out1, out2, out3, out4, out5, out6, out7, block, 8);
+}
+
+static void copy_8bit_to_16bit_width8_msa(const uint8_t *src, int32_t src_stride,
+                                          int16_t *dst, int32_t dst_stride,
+                                          int32_t height)
+{
+    uint8_t *dst_ptr;
+    int32_t cnt;
+    v16u8 src0, src1, src2, src3;
+    v16i8 zero = { 0 };
+
+    dst_ptr = (uint8_t *) dst;
+
+    for (cnt = (height >> 2); cnt--;) {
+        LD_UB4(src, src_stride, src0, src1, src2, src3);
+        src += (4 * src_stride);
+
+        ILVR_B4_UB(zero, src0, zero, src1, zero, src2, zero, src3,
+                   src0, src1, src2, src3);
+
+        ST_UB4(src0, src1, src2, src3, dst_ptr, (dst_stride * 2));
+        dst_ptr += (4 * 2 * dst_stride);
+    }
+}
+
+static void copy_16multx8mult_msa(const uint8_t *src, int32_t src_stride,
+                                  uint8_t *dst, int32_t dst_stride,
+                                  int32_t height, int32_t width)
+{
+    int32_t cnt, loop_cnt;
+    const uint8_t *src_tmp;
+    uint8_t *dst_tmp;
+    v16u8 src0, src1, src2, src3, src4, src5, src6, src7;
+
+    for (cnt = (width >> 4); cnt--;) {
+        src_tmp = src;
+        dst_tmp = dst;
+
+        for (loop_cnt = (height >> 3); loop_cnt--;) {
+            LD_UB8(src_tmp, src_stride,
+                   src0, src1, src2, src3, src4, src5, src6, src7);
+            src_tmp += (8 * src_stride);
+
+            ST_UB8(src0, src1, src2, src3, src4, src5, src6, src7,
+                   dst_tmp, dst_stride);
+            dst_tmp += (8 * dst_stride);
+        }
+
+        src += 16;
+        dst += 16;
+    }
+}
+
+static void copy_width16_msa(const uint8_t *src, int32_t src_stride,
+                             uint8_t *dst, int32_t dst_stride,
+                             int32_t height)
+{
+    int32_t cnt;
+    v16u8 src0, src1, src2, src3, src4, src5, src6, src7;
+
+    if (0 == height % 12) {
+        for (cnt = (height / 12); cnt--;) {
+            LD_UB8(src, src_stride,
+                   src0, src1, src2, src3, src4, src5, src6, src7);
+            src += (8 * src_stride);
+            ST_UB8(src0, src1, src2, src3, src4, src5, src6, src7,
+                   dst, dst_stride);
+            dst += (8 * dst_stride);
+
+            LD_UB4(src, src_stride, src0, src1, src2, src3);
+            src += (4 * src_stride);
+            ST_UB4(src0, src1, src2, src3, dst, dst_stride);
+            dst += (4 * dst_stride);
+        }
+    } else if (0 == height % 8) {
+        copy_16multx8mult_msa(src, src_stride, dst, dst_stride, height, 16);
+    } else if (0 == height % 4) {
+        for (cnt = (height >> 2); cnt--;) {
+            LD_UB4(src, src_stride, src0, src1, src2, src3);
+            src += (4 * src_stride);
+
+            ST_UB4(src0, src1, src2, src3, dst, dst_stride);
+            dst += (4 * dst_stride);
+        }
+    }
+}
+
+void ff_get_pixels_16_msa(int16_t *av_restrict dest, const uint8_t *src,
+                          ptrdiff_t stride)
+{
+    copy_width16_msa(src, stride, (uint8_t *) dest, 16, 8);
+}
+
+void ff_get_pixels_8_msa(int16_t *av_restrict dest, const uint8_t *src,
+                         ptrdiff_t stride)
+{
+    copy_8bit_to_16bit_width8_msa(src, stride, dest, 8, 8);
+}
+
+void ff_diff_pixels_msa(int16_t *av_restrict block, const uint8_t *src1,
+                        const uint8_t *src2, int stride)
+{
+    diff_pixels_msa(block, src1, src2, stride);
+}