checkasm: Add unit tests for bswapdsp

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

tests/checkasm/Makefile

 # libavcodec tests
+AVCODECOBJS-$(CONFIG_BSWAPDSP) += bswapdsp.o
 AVCODECOBJS-$(CONFIG_H264PRED) += h264pred.o
 AVCODECOBJS-$(CONFIG_H264QPEL) += h264qpel.o
 

tests/checkasm/bswapdsp.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/bswapdsp.h"
+#include "libavutil/common.h"
+#include "libavutil/intreadwrite.h"
+
+#define BUF_SIZE 512
+
+#define randomize_buffers()\
+    do {\
+        int i;\
+        for (i = 0; i < BUF_SIZE; i += 4) {\
+            uint32_t r = rnd();\
+            AV_WN32A(src0+i, r);\
+            AV_WN32A(src1+i, r);\
+            r = rnd();\
+            AV_WN32A(dst0+i, r);\
+            AV_WN32A(dst1+i, r);\
+        }\
+    } while (0)
+
+#define check_bswap(type)\
+    do {\
+        int w;\
+        for (w = 0; w < BUF_SIZE/sizeof(type); w++) {\
+            int offset = (BUF_SIZE/sizeof(type) - w) & 15; /* Test various alignments */\
+            randomize_buffers();\
+            call_ref((type*)dst0+offset, (type*)src0+offset, w);\
+            call_new((type*)dst1+offset, (type*)src1+offset, w);\
+            if (memcmp(src0, src1, BUF_SIZE) || memcmp(dst0, dst1, BUF_SIZE))\
+                fail();\
+            bench_new((type*)dst1+offset, (type*)src1+offset, w);\
+        }\
+    } while (0)
+
+void checkasm_check_bswapdsp(void)
+{
+    DECLARE_ALIGNED(16, uint8_t, src0)[BUF_SIZE];
+    DECLARE_ALIGNED(16, uint8_t, src1)[BUF_SIZE];
+    DECLARE_ALIGNED(16, uint8_t, dst0)[BUF_SIZE];
+    DECLARE_ALIGNED(16, uint8_t, dst1)[BUF_SIZE];
+    BswapDSPContext h;
+
+    ff_bswapdsp_init(&h);
+
+    if (check_func(h.bswap_buf, "bswap_buf"))
+        check_bswap(uint32_t);
+
+    if (check_func(h.bswap16_buf, "bswap16_buf"))
+        check_bswap(uint16_t);
+
+    report("bswap");
+}

tests/checkasm/checkasm.c

@@ -54,6 +54,9 @@
 
 /* List of tests to invoke */
 static void (* const tests[])(void) = {
+#if CONFIG_BSWAPDSP
+    checkasm_check_bswapdsp,
+#endif
 #if CONFIG_H264PRED
     checkasm_check_h264pred,
 #endif

tests/checkasm/checkasm.h

@@ -29,6 +29,7 @@
 #include "libavutil/lfg.h"
 #include "libavutil/timer.h"
 
+void checkasm_check_bswapdsp(void);
 void checkasm_check_h264pred(void);
 void checkasm_check_h264qpel(void);