tests/checkasm: add a test for VorbisDSPContext

Signed-off-by: James Almer <jamrial@gmail.com>

tests/checkasm/Makefile

@@ -31,6 +31,7 @@ AVCODECOBJS-$(CONFIG_HEVC_DECODER)      += hevc_add_res.o hevc_idct.o hevc_sao.o
 AVCODECOBJS-$(CONFIG_UTVIDEO_DECODER)   += utvideodsp.o
 AVCODECOBJS-$(CONFIG_V210_DECODER)      += v210dec.o
 AVCODECOBJS-$(CONFIG_V210_ENCODER)      += v210enc.o
+AVCODECOBJS-$(CONFIG_VORBIS_DECODER)    += vorbisdsp.o
 AVCODECOBJS-$(CONFIG_VP9_DECODER)       += vp9dsp.o
 
 CHECKASMOBJS-$(CONFIG_AVCODEC)          += $(AVCODECOBJS-yes)

tests/checkasm/checkasm.c

@@ -165,6 +165,9 @@ static const struct {
     #if CONFIG_VIDEODSP
         { "videodsp", checkasm_check_videodsp },
     #endif
+    #if CONFIG_VORBIS_DECODER
+        { "vorbisdsp", checkasm_check_vorbisdsp },
+    #endif
 #endif
 #if CONFIG_AVFILTER
     #if CONFIG_AFIR_FILTER

tests/checkasm/checkasm.h

@@ -88,6 +88,7 @@ void checkasm_check_vf_threshold(void);
 void checkasm_check_vp8dsp(void);
 void checkasm_check_vp9dsp(void);
 void checkasm_check_videodsp(void);
+void checkasm_check_vorbisdsp(void);
 
 struct CheckasmPerf;
 

tests/checkasm/vorbisdsp.c

@@ -0,0 +1,87 @@
+/*
+ * 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 "config.h"
+
+#include <float.h>
+
+#include "libavutil/mem_internal.h"
+
+#include "libavcodec/vorbisdsp.h"
+
+#include "checkasm.h"
+
+#define LEN 512
+
+#define randomize_buffer(buf)                 \
+do {                                          \
+    double bmg[2], stddev = 10.0, mean = 0.0; \
+                                              \
+    for (int i = 0; i < LEN; i += 2) {        \
+        av_bmg_get(&checkasm_lfg, bmg);       \
+        buf[i]     = bmg[0] * stddev + mean;  \
+        buf[i + 1] = bmg[1] * stddev + mean;  \
+    }                                         \
+} while(0);
+
+static void test_inverse_coupling(void)
+{
+    LOCAL_ALIGNED_16(float, src0,  [LEN]);
+    LOCAL_ALIGNED_16(float, src1,  [LEN]);
+    LOCAL_ALIGNED_16(float, cdst,  [LEN]);
+    LOCAL_ALIGNED_16(float, odst,  [LEN]);
+    LOCAL_ALIGNED_16(float, cdst1, [LEN]);
+    LOCAL_ALIGNED_16(float, odst1, [LEN]);
+
+    declare_func(void, float *av_restrict mag, float *av_restrict ang,
+                 ptrdiff_t blocksize);
+
+    randomize_buffer(src0);
+    randomize_buffer(src1);
+
+    memcpy(cdst,  src0, LEN * sizeof(*src0));
+    memcpy(cdst1, src1, LEN * sizeof(*src1));
+    memcpy(odst,  src0, LEN * sizeof(*src0));
+    memcpy(odst1, src1, LEN * sizeof(*src1));
+
+    call_ref(cdst, cdst1, LEN);
+    call_new(odst, odst1, LEN);
+    for (int i = 0; i < LEN; i++) {
+        if (!float_near_abs_eps(cdst[i],  odst[i],  FLT_EPSILON) ||
+            !float_near_abs_eps(cdst1[i], odst1[i], FLT_EPSILON)) {
+            fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
+                    i, cdst[i], odst[i], cdst[i] - odst[i]);
+            fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
+                    i, cdst1[i], odst1[i], cdst1[i] - odst1[i]);
+            fail();
+            break;
+        }
+    }
+    bench_new(src0, src1, LEN);
+}
+
+void checkasm_check_vorbisdsp(void)
+{
+    VorbisDSPContext dsp;
+
+    ff_vorbisdsp_init(&dsp);
+
+    if (check_func(dsp.vorbis_inverse_coupling, "inverse_coupling"))
+        test_inverse_coupling();
+    report("inverse_coupling");
+}

tests/fate/checkasm.mak

@@ -43,6 +43,7 @@ FATE_CHECKASM = fate-checkasm-aacpsdsp                                  \
                 fate-checkasm-vf_nlmeans                                \
                 fate-checkasm-vf_threshold                              \
                 fate-checkasm-videodsp                                  \
+                fate-checkasm-vorbisdsp                                 \
                 fate-checkasm-vp8dsp                                    \
                 fate-checkasm-vp9dsp                                    \