From: Yingming Fan <yingming...@gmail.com>

---
 Previous patch test 8 9 and 10 bit depth, because i consult codes from 
hevc_idct and hevc_add_res.
 While this patch test 8 10 and 12 bit depth like what VP9 does. I will submit 
another patch fix these issue in hevc_idct and hevc_add_res.
 This patch also refined randomize_buffers codes compared to previous patch.
 
 tests/checkasm/Makefile   |   2 +-
 tests/checkasm/checkasm.c |   1 +
 tests/checkasm/checkasm.h |   1 +
 tests/checkasm/hevc_sao.c | 150 ++++++++++++++++++++++++++++++++++++++++++++++
 tests/fate/checkasm.mak   |   1 +
 5 files changed, 154 insertions(+), 1 deletion(-)
 create mode 100644 tests/checkasm/hevc_sao.c

diff --git a/tests/checkasm/Makefile b/tests/checkasm/Makefile
index 77bdcf6e65..0520e264e2 100644
--- a/tests/checkasm/Makefile
+++ b/tests/checkasm/Makefile
@@ -23,7 +23,7 @@ AVCODECOBJS-$(CONFIG_EXR_DECODER)       += exrdsp.o
 AVCODECOBJS-$(CONFIG_HUFFYUV_DECODER)   += huffyuvdsp.o
 AVCODECOBJS-$(CONFIG_JPEG2000_DECODER)  += jpeg2000dsp.o
 AVCODECOBJS-$(CONFIG_PIXBLOCKDSP)       += pixblockdsp.o
-AVCODECOBJS-$(CONFIG_HEVC_DECODER)      += hevc_add_res.o hevc_idct.o
+AVCODECOBJS-$(CONFIG_HEVC_DECODER)      += hevc_add_res.o hevc_idct.o 
hevc_sao.o
 AVCODECOBJS-$(CONFIG_UTVIDEO_DECODER)   += utvideodsp.o
 AVCODECOBJS-$(CONFIG_V210_ENCODER)      += v210enc.o
 AVCODECOBJS-$(CONFIG_VP9_DECODER)       += vp9dsp.o
diff --git a/tests/checkasm/checkasm.c b/tests/checkasm/checkasm.c
index a4b8aff984..fe81d139c6 100644
--- a/tests/checkasm/checkasm.c
+++ b/tests/checkasm/checkasm.c
@@ -116,6 +116,7 @@ static const struct {
     #if CONFIG_HEVC_DECODER
         { "hevc_add_res", checkasm_check_hevc_add_res },
         { "hevc_idct", checkasm_check_hevc_idct },
+        { "hevc_sao", checkasm_check_hevc_sao },
     #endif
     #if CONFIG_HUFFYUV_DECODER
         { "huffyuvdsp", checkasm_check_huffyuvdsp },
diff --git a/tests/checkasm/checkasm.h b/tests/checkasm/checkasm.h
index 3de38e6717..8b9d96bc15 100644
--- a/tests/checkasm/checkasm.h
+++ b/tests/checkasm/checkasm.h
@@ -57,6 +57,7 @@ void checkasm_check_h264pred(void);
 void checkasm_check_h264qpel(void);
 void checkasm_check_hevc_add_res(void);
 void checkasm_check_hevc_idct(void);
+void checkasm_check_hevc_sao(void);
 void checkasm_check_huffyuvdsp(void);
 void checkasm_check_jpeg2000dsp(void);
 void checkasm_check_llviddsp(void);
diff --git a/tests/checkasm/hevc_sao.c b/tests/checkasm/hevc_sao.c
new file mode 100644
index 0000000000..8d0cf80774
--- /dev/null
+++ b/tests/checkasm/hevc_sao.c
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2018 Yingming Fan <yingming...@gmail.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 General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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 <string.h>
+
+#include "libavutil/intreadwrite.h"
+
+#include "libavcodec/avcodec.h"
+
+#include "libavcodec/hevcdsp.h"
+
+#include "checkasm.h"
+
+static const uint32_t pixel_mask[3] = { 0xffffffff, 0x03ff03ff, 0x0fff0fff };
+static const uint32_t sao_size[5] = {8, 16, 32, 48, 64};
+
+#define SIZEOF_PIXEL ((bit_depth + 7) / 8)
+#define PIXEL_STRIDE (2*MAX_PB_SIZE + AV_INPUT_BUFFER_PADDING_SIZE) //same 
with sao_edge src_stride
+#define BUF_SIZE (PIXEL_STRIDE * (64+2) * 2) //+2 for top and bottom row, *2 
for high bit depth
+#define OFFSET_THRESH (1 << (bit_depth - 5))
+#define OFFSET_LENGTH 5
+
+#define randomize_buffers(buf0, buf1, size)                 \
+    do {                                                    \
+        uint32_t mask = pixel_mask[(bit_depth - 8) >> 1];   \
+        int k;                                              \
+        for (k = 0; k < size; k += 4) {                     \
+            uint32_t r = rnd() & mask;                      \
+            AV_WN32A(buf0 + k, r);                          \
+            AV_WN32A(buf1 + k, r);                          \
+        }                                                   \
+    } while (0)
+
+#define randomize_buffers2(buf, size)                       \
+    do {                                                    \
+        uint32_t max_offset = OFFSET_THRESH;                \
+        int k;                                              \
+        if (bit_depth == 8) {                               \
+            for (k = 0; k < size; k++) {                    \
+                uint8_t r = rnd() % max_offset;             \
+                buf[k] = r;                                 \
+            }                                               \
+        } else {                                            \
+            for (k = 0; k < size; k++) {                    \
+                uint16_t r = rnd() % max_offset;            \
+                buf[k] = r;                                 \
+            }                                               \
+        }                                                   \
+    } while (0)
+
+static void check_sao_band(HEVCDSPContext h, int bit_depth)
+{
+    int i;
+    LOCAL_ALIGNED_32(uint8_t, dst0, [BUF_SIZE]);
+    LOCAL_ALIGNED_32(uint8_t, dst1, [BUF_SIZE]);
+    LOCAL_ALIGNED_32(uint8_t, src0, [BUF_SIZE]);
+    LOCAL_ALIGNED_32(uint8_t, src1, [BUF_SIZE]);
+    int16_t offset_val[OFFSET_LENGTH];
+    int left_class = rnd()%32;
+
+    for (i = 0; i <= 4; i++) {
+        int block_size = sao_size[i];
+        ptrdiff_t stride = PIXEL_STRIDE*SIZEOF_PIXEL;
+        declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *dst, uint8_t *src, 
ptrdiff_t dst_stride, ptrdiff_t src_stride,
+                          int16_t *sao_offset_val, int sao_left_class, int 
width, int height);
+
+        randomize_buffers(src0, src1, BUF_SIZE);
+        randomize_buffers2(offset_val, OFFSET_LENGTH);
+        memset(dst0, 0, BUF_SIZE);
+        memset(dst1, 0, BUF_SIZE);
+
+        if (check_func(h.sao_band_filter[i], "hevc_sao_band_%dx%d_%d", 
block_size, block_size, bit_depth)) {
+            call_ref(dst0, src0, stride, stride, offset_val, left_class, 
block_size, block_size);
+            call_new(dst1, src1, stride, stride, offset_val, left_class, 
block_size, block_size);
+            if (memcmp(dst0, dst1, BUF_SIZE))
+                fail();
+            bench_new(dst1, src1, stride, stride, offset_val, left_class, 
block_size, block_size);
+        }
+    }
+}
+
+static void check_sao_edge(HEVCDSPContext h, int bit_depth)
+{
+    int i;
+    LOCAL_ALIGNED_32(uint8_t, dst0, [BUF_SIZE]);
+    LOCAL_ALIGNED_32(uint8_t, dst1, [BUF_SIZE]);
+    LOCAL_ALIGNED_32(uint8_t, src0, [BUF_SIZE]);
+    LOCAL_ALIGNED_32(uint8_t, src1, [BUF_SIZE]);
+    int16_t offset_val[OFFSET_LENGTH];
+    int eo = rnd()%4;
+
+    for (i = 0; i <= 4; i++) {
+        int block_size = sao_size[i];
+        ptrdiff_t stride = PIXEL_STRIDE*SIZEOF_PIXEL;
+        int offset = (AV_INPUT_BUFFER_PADDING_SIZE + 
PIXEL_STRIDE)*SIZEOF_PIXEL;
+        declare_func_emms(AV_CPU_FLAG_MMX, void, uint8_t *dst, uint8_t *src, 
ptrdiff_t stride_dst,
+                          int16_t *sao_offset_val, int eo, int width, int 
height);
+
+        randomize_buffers(src0, src1, BUF_SIZE);
+        randomize_buffers2(offset_val, OFFSET_LENGTH);
+        memset(dst0, 0, BUF_SIZE);
+        memset(dst1, 0, BUF_SIZE);
+
+        if (check_func(h.sao_edge_filter[i], "hevc_sao_edge_%dx%d_%d", 
block_size, block_size, bit_depth)) {
+            call_ref(dst0, src0 + offset, stride, offset_val, eo, block_size, 
block_size);
+            call_new(dst1, src1 + offset, stride, offset_val, eo, block_size, 
block_size);
+            if (memcmp(dst0, dst1, BUF_SIZE))
+                fail();
+            bench_new(dst1, src1 + offset, stride, offset_val, eo, block_size, 
block_size);
+        }
+    }
+}
+
+void checkasm_check_hevc_sao(void)
+{
+    int bit_depth;
+
+    for (bit_depth = 8; bit_depth <= 12; bit_depth += 2) {
+        HEVCDSPContext h;
+
+        ff_hevc_dsp_init(&h, bit_depth);
+        check_sao_band(h, bit_depth);
+    }
+    report("sao_band");
+
+    for (bit_depth = 8; bit_depth <= 12; bit_depth += 2) {
+        HEVCDSPContext h;
+
+        ff_hevc_dsp_init(&h, bit_depth);
+        check_sao_edge(h, bit_depth);
+    }
+    report("sao_edge");
+}
diff --git a/tests/fate/checkasm.mak b/tests/fate/checkasm.mak
index 826ac16789..cf62f9b119 100644
--- a/tests/fate/checkasm.mak
+++ b/tests/fate/checkasm.mak
@@ -14,6 +14,7 @@ FATE_CHECKASM = fate-checkasm-aacpsdsp                        
          \
                 fate-checkasm-h264qpel                                  \
                 fate-checkasm-hevc_add_res                              \
                 fate-checkasm-hevc_idct                                 \
+                fate-checkasm-hevc_sao                                  \
                 fate-checkasm-jpeg2000dsp                               \
                 fate-checkasm-llviddsp                                  \
                 fate-checkasm-llviddspenc                               \
-- 
2.14.3 (Apple Git-98)

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