---
 tests/checkasm/h264dsp.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/tests/checkasm/h264dsp.c b/tests/checkasm/h264dsp.c
index d1228ed985..96540565af 100644
--- a/tests/checkasm/h264dsp.c
+++ b/tests/checkasm/h264dsp.c
@@ -22,6 +22,7 @@
 #include "checkasm.h"
 #include "libavcodec/h264dsp.h"
 #include "libavcodec/h264data.h"
+#include "libavcodec/h264idct.h"
 #include "libavcodec/h264_parse.h"
 #include "libavutil/common.h"
 #include "libavutil/intreadwrite.h"
@@ -324,6 +325,38 @@ static void check_idct_multiple(void)
     }
 }
 
+static void check_idct_dequant(void)
+{
+    static const int depths[5] = { 8, 9, 10, 12, 14 };
+    LOCAL_ALIGNED_16(int16_t, src, [16]);
+    LOCAL_ALIGNED_16(int16_t, dst0, [16 * 16 * 2]);
+    LOCAL_ALIGNED_16(int16_t, dst1, [16 * 16 * 2]);
+    H264DSPContext h;
+    int bit_depth, i, qmul;
+    declare_func_emms(AV_CPU_FLAG_MMX | AV_CPU_FLAG_SSE2, void, int16_t 
*output, int16_t *input, int qmul);
+
+    for (int j = 0; j < 16; j++)
+        src[j] = (rnd() % 512) - 256;
+
+    qmul = rnd() % 4096;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(depths); i++) {
+        bit_depth = depths[i];
+        ff_h264dsp_init(&h, bit_depth, 1);
+
+        memset(dst0, 0, 16 * 16 * SIZEOF_COEF);
+        memset(dst1, 0, 16 * 16 * SIZEOF_COEF);
+
+        if (check_func(h.h264_luma_dc_dequant_idct, 
"h264_luma_dc_dequant_idct_%d", bit_depth)) {
+
+            call_ref(dst0, src, qmul);
+            call_new(dst1, src, qmul);
+            checkasm_check(int16_t, dst0, 16*sizeof(int16_t), dst1, 
16*sizeof(int16_t), 16, 16, "dst");
+            bench_new(dst1, src, qmul);
+        }
+    }
+}
+
 
 static void check_loop_filter(void)
 {
@@ -453,6 +486,7 @@ void checkasm_check_h264dsp(void)
 {
     check_idct();
     check_idct_multiple();
+    check_idct_dequant();
     report("idct");
 
     check_loop_filter();
-- 
2.48.1

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