checkasm: add videodsp emulated_edge_mc test.

tests/checkasm/Makefile

@@ -10,6 +10,7 @@ AVCODECOBJS-$(CONFIG_JPEG2000_DECODER) += jpeg2000dsp.o
 AVCODECOBJS-$(CONFIG_PIXBLOCKDSP) += pixblockdsp.o
 AVCODECOBJS-$(CONFIG_V210_ENCODER) += v210enc.o
 AVCODECOBJS-$(CONFIG_VP9_DECODER) += vp9dsp.o
+AVCODECOBJS-$(CONFIG_VIDEODSP) += videodsp.o
 
 CHECKASMOBJS-$(CONFIG_AVCODEC) += $(AVCODECOBJS-yes)
 

tests/checkasm/checkasm.c

@@ -99,6 +99,9 @@ static const struct {
     #if CONFIG_VP9_DECODER
         { "vp9dsp", checkasm_check_vp9dsp },
     #endif
+    #if CONFIG_VIDEODSP
+        { "videodsp", checkasm_check_videodsp },
+    #endif
 #endif
     { NULL }
 };

tests/checkasm/checkasm.h

@@ -42,6 +42,7 @@ void checkasm_check_pixblockdsp(void);
 void checkasm_check_synth_filter(void);
 void checkasm_check_v210enc(void);
 void checkasm_check_vp9dsp(void);
+void checkasm_check_videodsp(void);
 
 void *checkasm_check_func(void *func, const char *name, ...) av_printf_format(2, 3);
 int checkasm_bench_func(void);

tests/checkasm/videodsp.c

@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2016 Ronald S. Bultje <rsbultje@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 "checkasm.h"
+#include "libavcodec/videodsp.h"
+#include "libavutil/internal.h"
+#include "libavutil/intreadwrite.h"
+
+#define randomize_buffers(w, h)                         \
+    do {                                                \
+        int i;                                          \
+        for (i = 0; i < w * h * sizeof(*src0); i += 4)  \
+            AV_WN32A(((uint8_t *) src0) + i, rnd());    \
+    } while (0)
+
+#define iter_1d(type, fix, fix_val, var, var_start, var_end)        \
+    for (fix = fix_val, var = var_start; var <= var_end; var++) {   \
+        call_ref((type *) dst0, (const type *) (src0 + y * pw + x), \
+                 bw * sizeof(type), pw * sizeof(type),              \
+                 bw, bh, x, y, pw, ph);                             \
+        call_new((type *) dst1, (const type *) (src1 + y * pw + x), \
+                 bw * sizeof(type), pw * sizeof(type),              \
+                 bw, bh, x, y, pw, ph);                             \
+        if (memcmp(dst0, dst1, bw * bh * sizeof(type)))             \
+            fail();                                                 \
+        bench_new((type *) dst1, (const type *) (src1 + y * pw + x),\
+                  bw * sizeof(type), pw * sizeof(type),             \
+                  bw, bh, x, y, pw, ph);                            \
+    }
+
+#define check_emu_edge_size(type, src_w, src_h, dst_w, dst_h)   \
+    do {                                                        \
+        LOCAL_ALIGNED_16(type, src0, [src_w * src_h]);          \
+        LOCAL_ALIGNED_16(type, src1, [src_w * src_h]);          \
+        int bw = dst_w, bh = dst_h;                             \
+        int pw = src_w, ph = src_h;                             \
+        int y, x;                                               \
+        randomize_buffers(src_w, src_h);                        \
+        memcpy(src1, src0, pw * ph * sizeof(type));             \
+        iter_1d(type, y, 0 - src_h, x, 0 - src_w, src_w - 0);   \
+        iter_1d(type, x, src_w - 0, y, 0 - src_h, src_h - 0);   \
+        iter_1d(type, y, src_h - 0, x, 0 - src_w, src_w - 0);   \
+        iter_1d(type, x, 0 - src_w, y, 0 - src_h, src_h - 0);   \
+    } while (0)
+
+#define check_emu_edge(type)                                    \
+    do {                                                        \
+        LOCAL_ALIGNED_16(type, dst0, [64 * 64]);                \
+        LOCAL_ALIGNED_16(type, dst1, [64 * 64]);                \
+        declare_func_emms(AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT, \
+                          void, type *dst, const type *src,     \
+                          ptrdiff_t dst_linesize,               \
+                          ptrdiff_t src_linesize,               \
+                          int block_w, int block_h,             \
+                          int src_x, int src_y,                 \
+                          int src_w, int src_h);                \
+        check_emu_edge_size(type, 16,  1, 64, 64);              \
+        check_emu_edge_size(type, 16, 16, 64, 64);              \
+        check_emu_edge_size(type, 64, 64, 64, 64);              \
+    } while (0)
+
+void checkasm_check_videodsp(void)
+{
+    VideoDSPContext vdsp;
+
+    ff_videodsp_init(&vdsp, 8);
+    if (check_func(vdsp.emulated_edge_mc, "emulated_edge_mc_8"))
+        check_emu_edge(uint8_t);
+
+    report("emulated_edge_mc");
+}