1 files changed, 12 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/bitwriter_buffer.c b/third_party/aom/aom_dsp/bitwriter_buffer.c
index a563bf684..596246deb 100644
--- a/third_party/aom/aom_dsp/bitwriter_buffer.c
+++ b/third_party/aom/aom_dsp/bitwriter_buffer.c
@@ -73,3 +73,15 @@ void aom_wb_write_inv_signed_literal(struct aom_write_bit_buffer *wb, int data,
                                      int bits) {
   aom_wb_write_literal(wb, data, bits + 1);
 }
+
+void aom_wb_write_uvlc(struct aom_write_bit_buffer *wb, uint32_t v) {
+  int64_t shift_val = ++v;
+  int leading_zeroes = 1;
+
+  assert(shift_val > 0);
+
+  while (shift_val >>= 1) leading_zeroes += 2;
+
+  aom_wb_write_literal(wb, 0, leading_zeroes >> 1);
+  aom_wb_write_unsigned_literal(wb, v, (leading_zeroes + 1) >> 1);
+}