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authortrav90 <travawine@palemoon.org>2018-10-19 23:05:00 -0500
committertrav90 <travawine@palemoon.org>2018-10-19 23:05:03 -0500
commitd2499ead93dc4298c0882fe98902acb1b5209f99 (patch)
treecb0b942aed59e5108f9a3e9d64e7b77854383421 /third_party/aom/av1/encoder/encodemv.c
parent41fbdea457bf50c0a43e1c27c5cbf7f0a3a9eb33 (diff)
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Update libaom to commit ID 1e227d41f0616de9548a673a83a21ef990b62591
Diffstat (limited to 'third_party/aom/av1/encoder/encodemv.c')
-rw-r--r--third_party/aom/av1/encoder/encodemv.c26
1 files changed, 22 insertions, 4 deletions
diff --git a/third_party/aom/av1/encoder/encodemv.c b/third_party/aom/av1/encoder/encodemv.c
index 944e2c53d..42eb5abf6 100644
--- a/third_party/aom/av1/encoder/encodemv.c
+++ b/third_party/aom/av1/encoder/encodemv.c
@@ -18,19 +18,37 @@
#include "av1/encoder/encodemv.h"
#include "aom_dsp/aom_dsp_common.h"
+#include "aom_ports/bitops.h"
+
+static INLINE int mv_class_base(MV_CLASS_TYPE c) {
+ return c ? CLASS0_SIZE << (c + 2) : 0;
+}
+
+// If n != 0, returns the floor of log base 2 of n. If n == 0, returns 0.
+static INLINE uint8_t log_in_base_2(unsigned int n) {
+ // get_msb() is only valid when n != 0.
+ return n == 0 ? 0 : get_msb(n);
+}
+
+static INLINE MV_CLASS_TYPE get_mv_class(int z, int *offset) {
+ const MV_CLASS_TYPE c = (z >= CLASS0_SIZE * 4096)
+ ? MV_CLASS_10
+ : (MV_CLASS_TYPE)log_in_base_2(z >> 3);
+ if (offset) *offset = z - mv_class_base(c);
+ return c;
+}
static void encode_mv_component(aom_writer *w, int comp, nmv_component *mvcomp,
MvSubpelPrecision precision) {
+ assert(comp != 0);
int offset;
const int sign = comp < 0;
const int mag = sign ? -comp : comp;
- const int mv_class = av1_get_mv_class(mag - 1, &offset);
+ const int mv_class = get_mv_class(mag - 1, &offset);
const int d = offset >> 3; // int mv data
const int fr = (offset >> 1) & 3; // fractional mv data
const int hp = offset & 1; // high precision mv data
- assert(comp != 0);
-
// Sign
aom_write_symbol(w, sign, mvcomp->sign_cdf, 2);
@@ -89,7 +107,7 @@ static void build_nmv_component_cost_table(int *mvcost,
for (v = 1; v <= MV_MAX; ++v) {
int z, c, o, d, e, f, cost = 0;
z = v - 1;
- c = av1_get_mv_class(z, &o);
+ c = get_mv_class(z, &o);
cost += class_cost[c];
d = (o >> 3); /* int mv data */
f = (o >> 1) & 3; /* fractional pel mv data */