checkasm: add opusdsp tests

tests/checkasm/Makefile

@@ -22,6 +22,7 @@ AVCODECOBJS-$(CONFIG_DCA_DECODER)       += synth_filter.o
 AVCODECOBJS-$(CONFIG_EXR_DECODER)       += exrdsp.o
 AVCODECOBJS-$(CONFIG_HUFFYUV_DECODER)   += huffyuvdsp.o
 AVCODECOBJS-$(CONFIG_JPEG2000_DECODER)  += jpeg2000dsp.o
+AVCODECOBJS-$(CONFIG_OPUS_DECODER)      += opusdsp.o
 AVCODECOBJS-$(CONFIG_PIXBLOCKDSP)       += pixblockdsp.o
 AVCODECOBJS-$(CONFIG_HEVC_DECODER)      += hevc_add_res.o hevc_idct.o hevc_sao.o
 AVCODECOBJS-$(CONFIG_UTVIDEO_DECODER)   += utvideodsp.o

tests/checkasm/checkasm.c

@@ -130,6 +130,9 @@ static const struct {
     #if CONFIG_LLVIDENCDSP
         { "llviddspenc", checkasm_check_llviddspenc },
     #endif
+    #if CONFIG_OPUS_DECODER
+        { "opusdsp", checkasm_check_opusdsp },
+    #endif
     #if CONFIG_PIXBLOCKDSP
         { "pixblockdsp", checkasm_check_pixblockdsp },
     #endif

tests/checkasm/checkasm.h

@@ -64,6 +64,7 @@ void checkasm_check_jpeg2000dsp(void);
 void checkasm_check_llviddsp(void);
 void checkasm_check_llviddspenc(void);
 void checkasm_check_nlmeans(void);
+void checkasm_check_opusdsp(void);
 void checkasm_check_pixblockdsp(void);
 void checkasm_check_sbrdsp(void);
 void checkasm_check_synth_filter(void);

tests/checkasm/opusdsp.c

@@ -0,0 +1,103 @@
+/*
+ * 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 "libavcodec/opusdsp.h"
+
+#include "checkasm.h"
+
+#define randomize_float(buf, len)                               \
+    do {                                                        \
+        for (int i = 0; i < len; i++) {                         \
+            float f = (float)rnd() / (UINT_MAX >> 5) - 16.0f;   \
+            buf[i] = f;                                         \
+        }                                                       \
+    } while (0)
+
+#define EPS 0.005
+#define MAX_SIZE (960)
+
+/* period is between 15 and 1022, inclusive */
+static void test_postfilter(int period)
+{
+    LOCAL_ALIGNED(16, float, data0, [MAX_SIZE + 1024]);
+    LOCAL_ALIGNED(16, float, data1, [MAX_SIZE + 1024]);
+
+    /* This filter can explode very easily, so use a tapset from the codec.
+     * In the codec these are usually multiplied by at least 0.09375f,
+     * so its outside the largest filter value, but the filter is still stable
+     * so use it. */
+    float gains[3] = { 0.3066406250f, 0.2170410156f, 0.1296386719f };
+
+    /* The codec will always call with an offset which is aligned once
+     * (period + 2) is subtracted, but here we have to align it outselves. */
+    int offset = FFALIGN(period + 2, 4);
+
+    declare_func(void, float *data, int period, float *gains, int len);
+
+    randomize_float(data0, MAX_SIZE + 1024);
+    memcpy(data1, data0, (MAX_SIZE + 1024)*sizeof(float));
+
+    call_ref(data0 + offset, period, gains, MAX_SIZE);
+    call_new(data1 + offset, period, gains, MAX_SIZE);
+
+    if (!float_near_abs_eps_array(data0 + offset, data1 + offset, EPS, MAX_SIZE))
+        fail();
+    bench_new(data1 + offset, period, gains, MAX_SIZE);
+}
+
+static void test_deemphasis(void)
+{
+    LOCAL_ALIGNED(16, float, src, [FFALIGN(MAX_SIZE, 4)]);
+    LOCAL_ALIGNED(16, float, dst0, [FFALIGN(MAX_SIZE, 4)]);
+    LOCAL_ALIGNED(16, float, dst1, [FFALIGN(MAX_SIZE, 4)]);
+    float coeff0 = (float)rnd() / (UINT_MAX >> 5) - 16.0f, coeff1 = coeff0;
+
+    declare_func(float, float *out, float *in, float coeff, int len);
+
+    randomize_float(src, MAX_SIZE);
+
+    coeff0 = call_ref(dst0, src, coeff0, MAX_SIZE);
+    coeff1 = call_new(dst1, src, coeff1, MAX_SIZE);
+
+    if (!float_near_abs_eps(coeff0, coeff1, EPS) ||
+        !float_near_abs_eps_array(dst0, dst1, EPS, MAX_SIZE))
+        fail();
+    bench_new(dst1, src, coeff1, MAX_SIZE);
+}
+
+void checkasm_check_opusdsp(void)
+{
+    OpusDSP ctx;
+    ff_opus_dsp_init(&ctx);
+
+    if (check_func(ctx.postfilter, "postfilter_15"))
+        test_postfilter(15);
+    report("postfilter_15");
+
+    if (check_func(ctx.postfilter, "postfilter_512"))
+        test_postfilter(512);
+    report("postfilter_512");
+
+    if (check_func(ctx.postfilter, "postfilter_1022"))
+        test_postfilter(1022);
+    report("postfilter_1022");
+
+    if (check_func(ctx.deemphasis, "deemphasis"))
+        test_deemphasis();
+    report("deemphasis");
+}

tests/fate/checkasm.mak

@@ -19,6 +19,7 @@ FATE_CHECKASM = fate-checkasm-aacpsdsp                                  \
                 fate-checkasm-jpeg2000dsp                               \
                 fate-checkasm-llviddsp                                  \
                 fate-checkasm-llviddspenc                               \
+                fate-checkasm-opusdsp                                   \
                 fate-checkasm-pixblockdsp                               \
                 fate-checkasm-sbrdsp                                    \
                 fate-checkasm-synth_filter                              \