rv34: move 4x4 dequant to RV34DSPContext

Signed-off-by: Mans Rullgard <mans@mansr.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/libavcodec/rv34dsp.c b/libavcodec/rv34dsp.c
index 1f4cea8544..974bf9ec16 100644
--- a/libavcodec/rv34dsp.c
+++ b/libavcodec/rv34dsp.c
@@ -100,10 +100,26 @@ static void rv34_inv_transform_noround_c(DCTELEM *block){
 /** @} */ // transform
 
 
+/**
+ * Dequantize ordinary 4x4 block.
+ */
+void ff_rv34_dequant4x4_neon(DCTELEM *block, int Qdc, int Q);
+static void rv34_dequant4x4_c(DCTELEM *block, int Qdc, int Q)
+{
+    int i, j;
+
+    block[0] = (block[0] * Qdc + 8) >> 4;
+    for (i = 0; i < 4; i++)
+        for (j = !i; j < 4; j++)
+            block[j + i*8] = (block[j + i*8] * Q + 8) >> 4;
+}
+
 av_cold void ff_rv34dsp_init(RV34DSPContext *c, DSPContext* dsp) {
     c->rv34_inv_transform_tab[0] = rv34_inv_transform_c;
     c->rv34_inv_transform_tab[1] = rv34_inv_transform_noround_c;
 
+    c->rv34_dequant4x4 = rv34_dequant4x4_c;
+
     if (HAVE_NEON)
         ff_rv34dsp_init_neon(c, dsp);
 }