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-rw-r--r--third_party/aom/aom_dsp/entcode.h20
1 files changed, 9 insertions, 11 deletions
diff --git a/third_party/aom/aom_dsp/entcode.h b/third_party/aom/aom_dsp/entcode.h
index 981a951e6..5c15526e9 100644
--- a/third_party/aom/aom_dsp/entcode.h
+++ b/third_party/aom/aom_dsp/entcode.h
@@ -9,11 +9,16 @@
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
-#if !defined(_entcode_H)
-#define _entcode_H (1)
+#ifndef AOM_DSP_ENTCODE_H_
+#define AOM_DSP_ENTCODE_H_
+
#include <limits.h>
#include <stddef.h>
#include "av1/common/odintrin.h"
+#include "aom_dsp/prob.h"
+
+#define EC_PROB_SHIFT 6
+#define EC_MIN_PROB 4 // must be <= (1<<EC_PROB_SHIFT)/16
/*OPT: od_ec_window must be at least 32 bits, but if you have fast arithmetic
on a larger type, you can speed up the decoder by using it here.*/
@@ -21,22 +26,15 @@ typedef uint32_t od_ec_window;
#define OD_EC_WINDOW_SIZE ((int)sizeof(od_ec_window) * CHAR_BIT)
-/*The number of bits to use for the range-coded part of unsigned integers.*/
-#define OD_EC_UINT_BITS (4)
-
/*The resolution of fractional-precision bit usage measurements, i.e.,
3 => 1/8th bits.*/
#define OD_BITRES (3)
-/*The value stored in an iCDF is 32768 minus the actual Q15 cumulative
- probability (an "inverse" CDF).
- This function converts from one representation to the other (and is its own
- inverse).*/
-#define OD_ICDF(x) (32768U - (x))
+#define OD_ICDF AOM_ICDF
/*See entcode.c for further documentation.*/
OD_WARN_UNUSED_RESULT uint32_t od_ec_tell_frac(uint32_t nbits_total,
uint32_t rng);
-#endif
+#endif // AOM_DSP_ENTCODE_H_