checkasm: add a test for HEVC IDCT

Signed-off-by: NAnton Khirnov <anton@khirnov.net>

tests/checkasm/hevc_idct.c

@@ -35,6 +35,30 @@
         }                                       \
     } while (0)
 
+static void check_idct(HEVCDSPContext h, int bit_depth)
+{
+    int i;
+    LOCAL_ALIGNED(32, int16_t, coeffs0, [32 * 32]);
+    LOCAL_ALIGNED(32, int16_t, coeffs1, [32 * 32]);
+
+    for (i = 2; i <= 5; i++) {
+        int block_size = 1 << i;
+        int size = block_size * block_size;
+        int col_limit = block_size;
+        declare_func(void, int16_t *coeffs, int col_limit);
+
+        randomize_buffers(coeffs0, size);
+        memcpy(coeffs1, coeffs0, sizeof(*coeffs0) * size);
+        if (check_func(h.idct[i - 2], "hevc_idct_%dx%d_%d", block_size, block_size, bit_depth)) {
+            call_ref(coeffs0, col_limit);
+            call_new(coeffs1, col_limit);
+            if (memcmp(coeffs0, coeffs1, sizeof(*coeffs0) * size))
+                fail();
+            bench_new(coeffs1, col_limit);
+        }
+    }
+}
+
 static void check_idct_dc(HEVCDSPContext h, int bit_depth)
 {
     int i;
@@ -49,7 +73,7 @@ static void check_idct_dc(HEVCDSPContext h, int bit_depth)
         randomize_buffers(coeffs0, size);
         memcpy(coeffs1, coeffs0, sizeof(*coeffs0) * size);
 
-        if (check_func(h.idct_dc[i - 2], "idct_%dx%d_dc_%d", block_size, block_size, bit_depth)) {
+        if (check_func(h.idct_dc[i - 2], "hevc_idct_%dx%d_dc_%d", block_size, block_size, bit_depth)) {
             call_ref(coeffs0);
             call_new(coeffs1);
             if (memcmp(coeffs0, coeffs1, sizeof(*coeffs0) * size))
@@ -70,4 +94,12 @@ void checkasm_check_hevc_idct(void)
         check_idct_dc(h, bit_depth);
     }
     report("idct_dc");
+
+    for (bit_depth = 8; bit_depth <= 10; bit_depth++) {
+        HEVCDSPContext h;
+
+        ff_hevc_dsp_init(&h, bit_depth);
+        check_idct(h, bit_depth);
+    }
+    report("idct");
 }