[FFmpeg-devel] [PATCHv3] checkasm/flacdsp: add LPC test

[Rémi Denis-Courmont]

---
 tests/checkasm/flacdsp.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/tests/checkasm/flacdsp.c b/tests/checkasm/flacdsp.c
index 51a0e0060b..b308237db1 100644
--- a/tests/checkasm/flacdsp.c
+++ b/tests/checkasm/flacdsp.c
@@ -54,6 +54,28 @@ static void check_decorrelate(uint8_t **ref_dst, uint8_t **ref_src, uint8_t **ne
     bench_new(new_dst, (int32_t **)new_src, channels, BUF_SIZE / sizeof(int32_t), 8);
 }
 
+static void check_lpc(int pred_order)
+{
+    int qlevel = rnd() % 16;
+    LOCAL_ALIGNED_16(int32_t, coeffs, [32]);
+    LOCAL_ALIGNED_16(int32_t, dst0, [BUF_SIZE]);
+    LOCAL_ALIGNED_16(int32_t, dst1, [BUF_SIZE]);
+
+    declare_func(void, int32_t *, const int[32], int, int, int);
+
+    for (int i = 0; i < 32; i++)
+        coeffs[i] = rnd();
+    for (int i = 0; i < BUF_SIZE; i++)
+        dst0[i] = rnd();
+
+    memcpy(dst1, dst0, BUF_SIZE * sizeof (int32_t));
+    call_ref(dst0, coeffs, pred_order, qlevel, BUF_SIZE);
+    call_new(dst1, coeffs, pred_order, qlevel, BUF_SIZE);
+    if (memcmp(dst0, dst1, BUF_SIZE * sizeof (int32_t)) != 0)
+       fail();
+    bench_new(dst1, coeffs, pred_order, qlevel, BUF_SIZE);
+}
+
 void checkasm_check_flacdsp(void)
 {
     LOCAL_ALIGNED_16(uint8_t, ref_dst, [BUF_SIZE*MAX_CHANNELS]);
@@ -72,6 +94,7 @@ void checkasm_check_flacdsp(void)
         { AV_SAMPLE_FMT_S16, 16 },
         { AV_SAMPLE_FMT_S32, 32 },
     };
+    static const signed char pred_orders[] = { 13, 16, 29, 32 };
     FLACDSPContext h;
     int i, j;
 
@@ -88,4 +111,13 @@ void checkasm_check_flacdsp(void)
     }
 
     report("decorrelate");
+
+    for (i = 0; i < FF_ARRAY_ELEMS(pred_orders); i++)
+        if (check_func(h.lpc16, "flac_lpc_16_%d", pred_orders[i]))
+            check_lpc(pred_orders[i]);
+    for (i = 0; i < FF_ARRAY_ELEMS(pred_orders); i++)
+        if (check_func(h.lpc32, "flac_lpc_32_%d", pred_orders[i]))
+            check_lpc(pred_orders[i]);
+
+    report("lpc");
 }
-- 
2.42.0