tests/checkasm: add scene_sad checkasm test

tests/checkasm/Makefile

@@ -52,6 +52,7 @@ AVCODECOBJS-$(CONFIG_VVC_DECODER)       += vvc_alf.o vvc_mc.o vvc_sao.o
 CHECKASMOBJS-$(CONFIG_AVCODEC)          += $(AVCODECOBJS-yes)
 
 # libavfilter tests
+AVFILTEROBJS-$(CONFIG_SCENE_SAD)         += scene_sad.o
 AVFILTEROBJS-$(CONFIG_AFIR_FILTER) += af_afir.o
 AVFILTEROBJS-$(CONFIG_BLEND_FILTER) += vf_blend.o
 AVFILTEROBJS-$(CONFIG_BWDIF_FILTER)      += vf_bwdif.o

tests/checkasm/checkasm.c

@@ -260,6 +260,9 @@ static const struct {
     #endif
 #endif
 #if CONFIG_AVFILTER
+    #if CONFIG_SCENE_SAD
+        { "scene_sad", checkasm_check_scene_sad },
+    #endif
     #if CONFIG_AFIR_FILTER
         { "af_afir", checkasm_check_afir },
     #endif

tests/checkasm/checkasm.h

@@ -124,6 +124,7 @@ void checkasm_check_pixblockdsp(void);
 void checkasm_check_sbrdsp(void);
 void checkasm_check_rv34dsp(void);
 void checkasm_check_rv40dsp(void);
+void checkasm_check_scene_sad(void);
 void checkasm_check_svq1enc(void);
 void checkasm_check_synth_filter(void);
 void checkasm_check_sw_gbrp(void);

tests/checkasm/scene_sad.c

@@ -0,0 +1,73 @@
+/*
+ * 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 "checkasm.h"
+#include "libavfilter/scene_sad.h"
+#include "libavutil/mem_internal.h"
+
+#define WIDTH  256
+#define HEIGHT 256
+#define STRIDE WIDTH
+
+#define randomize_buffers(type, buf, size, mask)  \
+    do {                                          \
+        int j;                                    \
+        type *tmp_buf = (type *) buf;             \
+        for (j = 0; j < size; j++)                \
+            tmp_buf[j] = rnd() & mask;            \
+    } while (0)
+
+static void check_scene_sad(int depth)
+{
+    LOCAL_ALIGNED_32(uint8_t, src1, [WIDTH * HEIGHT * 2]);
+    LOCAL_ALIGNED_32(uint8_t, src2, [WIDTH * HEIGHT * 2]);
+    declare_func(void, const uint8_t *src1, ptrdiff_t stride1,
+                       const uint8_t *src2, ptrdiff_t stride2,
+                       ptrdiff_t width, ptrdiff_t height, uint64_t *sum);
+
+    const int width = WIDTH >> (depth > 8);
+    int mask = (1 << depth) - 1;
+    if (depth <= 8) {
+        randomize_buffers(uint8_t,  src1, width * HEIGHT, mask);
+        randomize_buffers(uint8_t,  src2, width * HEIGHT, mask);
+    } else if (depth <= 16) {
+        randomize_buffers(uint16_t, src1, width * HEIGHT, mask);
+        randomize_buffers(uint16_t, src2, width * HEIGHT, mask);
+    }
+
+    if (check_func(ff_scene_sad_get_fn(depth), "scene_sad%d", depth)) {
+        uint64_t sum1, sum2;
+        call_ref(src1, STRIDE, src2, STRIDE, width, HEIGHT, &sum1);
+        call_new(src1, STRIDE, src2, STRIDE, width, HEIGHT, &sum2);
+        if (sum1 != sum2) {
+            fprintf(stderr, "scene_sad%d: sum mismatch: %llu != %llu\n",
+                    depth, (unsigned long long) sum1, (unsigned long long) sum2);
+            fail();
+        }
+        bench_new(src1, STRIDE, src2, STRIDE, WIDTH, HEIGHT, &sum2);
+    }
+}
+
+void checkasm_check_scene_sad(void)
+{
+    const int depths[] = { 8, 10, 12, 14, 15, 16 };
+    for (int i = 0; i < FF_ARRAY_ELEMS(depths); i++) {
+        check_scene_sad(depths[i]);
+        report("scene_sad%d", depths[i]);
+    }
+}

tests/fate/checkasm.mak

@@ -42,6 +42,7 @@ FATE_CHECKASM = fate-checkasm-aacencdsp                                 \
                 fate-checkasm-sbrdsp                                    \
                 fate-checkasm-rv34dsp                                   \
                 fate-checkasm-rv40dsp                                   \
+                fate-checkasm-scene_sad                                 \
                 fate-checkasm-svq1enc                                   \
                 fate-checkasm-synth_filter                              \
                 fate-checkasm-sw_gbrp                                   \