checkasm: add fmtconvert tests

tests/checkasm/Makefile

 # libavcodec tests
 AVCODECOBJS-$(CONFIG_BSWAPDSP) += bswapdsp.o
 AVCODECOBJS-$(CONFIG_DCA_DECODER) += dcadsp.o synth_filter.o
+AVCODECOBJS-$(CONFIG_FMTCONVERT)   += fmtconvert.o
 AVCODECOBJS-$(CONFIG_H264PRED) += h264pred.o
 AVCODECOBJS-$(CONFIG_H264QPEL) += h264qpel.o
 AVCODECOBJS-$(CONFIG_HEVC_DECODER) += hevc_mc.o

tests/checkasm/checkasm.c

@@ -65,6 +65,9 @@ static const struct {
     { "dcadsp", checkasm_check_dcadsp },
     { "synth_filter", checkasm_check_synth_filter },
 #endif
+#if CONFIG_FMTCONVERT
+    { "fmtconvert", checkasm_check_fmtconvert },
+#endif
 #if CONFIG_H264PRED
     { "h264pred", checkasm_check_h264pred },
 #endif

tests/checkasm/checkasm.h

@@ -32,6 +32,7 @@
 
 void checkasm_check_bswapdsp(void);
 void checkasm_check_dcadsp(void);
+void checkasm_check_fmtconvert(void);
 void checkasm_check_h264pred(void);
 void checkasm_check_h264qpel(void);
 void checkasm_check_hevc_mc(void);

tests/checkasm/fmtconvert.c

+/*
+ * Copyright (c) 2015 Janne Grunau
+ *
+ * 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 <math.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "libavutil/internal.h"
+#include "libavutil/common.h"
+#include "libavcodec/fmtconvert.h"
+
+#include "checkasm.h"
+
+#define BUF_SIZE 1024
+
+#define randomize_input(len)                                    \
+    do {                                                        \
+        int k;                                                  \
+        for (k = 0; k < len; k++) {                             \
+            in[k] = rnd() - INT32_MAX;                         \
+        }                                                       \
+        for (     ; k < BUF_SIZE; k++) {                        \
+            in[k] = INT32_MAX;                                  \
+        }                                                       \
+    } while (0)
+
+void checkasm_check_fmtconvert(void)
+{
+    FmtConvertContext c;
+    LOCAL_ALIGNED(32, float,   dst0, [BUF_SIZE]);
+    LOCAL_ALIGNED(32, float,   dst1, [BUF_SIZE]);
+    LOCAL_ALIGNED(32, int32_t, in,   [BUF_SIZE]);
+    float scale_arr[128];
+    int length[] = {8, 16, 24, 56, 72, 128, 512, 520, 656, 768, 992};
+    int i, j;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(scale_arr); i++)
+        scale_arr[i] = (FF_ARRAY_ELEMS(scale_arr) - FF_ARRAY_ELEMS(scale_arr) / 2) / 13;
+
+    ff_fmt_convert_init(&c, NULL);
+
+    memset(dst0, 0, sizeof(*dst0) * BUF_SIZE);
+    memset(dst1, 0, sizeof(*dst1) * BUF_SIZE);
+
+    if (check_func(c.int32_to_float_fmul_scalar, "int32_to_float_fmul_scalar")) {
+        declare_func(void, float *, const int32_t *, float, int);
+
+        for (i = 0; i < FF_ARRAY_ELEMS(scale_arr); i++) {
+            for (j = 0; j < FF_ARRAY_ELEMS(length); j++) {
+
+                randomize_input(length[j]);
+
+                call_ref(dst0, in, scale_arr[i], length[j]);
+                call_new(dst1, in, scale_arr[i], length[j]);
+
+                if (!float_near_ulp_array(dst0, dst1, 3, length[j])) {
+                    fail();
+                    break;
+                }
+
+                bench_new(dst1, in, scale_arr[i], length[j]);
+            }
+        }
+    }
+    if (check_func(c.int32_to_float_fmul_array8, "int32_to_float_fmul_array8")) {
+        declare_func(void, FmtConvertContext *, float *, const int32_t *,
+                     const float *, int);
+
+        for (i = 0; i < 4; i++) {
+            for (j = 0; j < FF_ARRAY_ELEMS(length); j++) {
+
+                randomize_input(length[j]);
+
+                call_ref(&c, dst0, in, scale_arr, length[j]);
+                call_new(&c, dst1, in, scale_arr, length[j]);
+
+                if (!float_near_ulp_array(dst0, dst1, 3, length[j])) {
+                    fail();
+                    fprintf(stderr, "int32_to_float_fmul_array8: len: %d\n", length[j]);
+                    break;
+                }
+
+                bench_new(&c, dst1, in, scale_arr, length[j]);
+            }
+        }
+    }
+    report("fmtconvert");
+}