checkasm: add a test for blockdsp

tests/checkasm/Makefile

 # libavcodec tests
 # subsystems
+AVCODECOBJS-$(CONFIG_BLOCKDSP)          += blockdsp.o
 AVCODECOBJS-$(CONFIG_BSWAPDSP)          += bswapdsp.o
 AVCODECOBJS-$(CONFIG_FMTCONVERT)        += fmtconvert.o
 AVCODECOBJS-$(CONFIG_H264DSP)           += h264dsp.o

tests/checkasm/blockdsp.c

+/*
+ * Copyright (c) 2015 Henrik Gramner
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; 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/blockdsp.h"
+
+#include "libavutil/common.h"
+#include "libavutil/internal.h"
+#include "libavutil/intreadwrite.h"
+
+#define randomize_buffers(size)             \
+    do {                                    \
+        int i;                              \
+        for (i = 0; i < size; i++) {        \
+            uint16_t r = rnd();             \
+            AV_WN16A(buf0 + i, r);          \
+            AV_WN16A(buf1 + i, r);          \
+        }                                   \
+    } while (0)
+
+#define check_clear(func, size)                                     \
+do {                                                                \
+    if (check_func(h.func, "blockdsp." #func)) {                    \
+        declare_func_emms(AV_CPU_FLAG_MMX, void, int16_t *block);   \
+        randomize_buffers(size);                                    \
+        call_ref(buf0);                                             \
+        call_new(buf1);                                             \
+        if (memcmp(buf0, buf1, sizeof(*buf0) * size))               \
+            fail();                                                 \
+        bench_new(buf0);                                            \
+    }                                                               \
+} while (0)
+
+void checkasm_check_blockdsp(void)
+{
+    LOCAL_ALIGNED_16(uint16_t, buf0, [6 * 8 * 8]);
+    LOCAL_ALIGNED_16(uint16_t, buf1, [6 * 8 * 8]);
+
+    AVCodecContext avctx = { 0 };
+    BlockDSPContext h;
+
+    ff_blockdsp_init(&h, &avctx);
+
+    check_clear(clear_block,  8 * 8);
+    check_clear(clear_blocks, 8 * 8 * 6);
+
+    report("blockdsp");
+}

tests/checkasm/checkasm.c

@@ -64,6 +64,9 @@ static const struct {
     const char *name;
     void (*func)(void);
 } tests[] = {
+#if CONFIG_BLOCKDSP
+    { "blockdsp", checkasm_check_blockdsp },
+#endif
 #if CONFIG_BSWAPDSP
     { "bswapdsp", checkasm_check_bswapdsp },
 #endif

tests/checkasm/checkasm.h

@@ -31,6 +31,7 @@
 #include "libavutil/lfg.h"
 #include "libavutil/timer.h"
 
+void checkasm_check_blockdsp(void);
 void checkasm_check_bswapdsp(void);
 void checkasm_check_dcadsp(void);
 void checkasm_check_fmtconvert(void);