avcodec/ira288: Check init_get_bits8() for failure

[ffmpeg] / libavcodec / aacenc_tns.h

diff --git a/libavcodec/aacenc_tns.h b/libavcodec/aacenc_tns.h
index 789e9a64fef4b4fa2d32fc26264fddbd3f44b82b..812deeac8cafc5c7c0bbb75586beb726b583d889 100644 (file)
--- a/libavcodec/aacenc_tns.h
+++ b/libavcodec/aacenc_tns.h
@@ -30,16 +30,21 @@
 
 #include "aacenc.h"
 
-/** Frequency in Hz for lower limit of TNS **/
-#define TNS_LOW_LIMIT 2150
+/* Could be set to 3 to save an additional bit at the cost of little quality */
+#define TNS_Q_BITS 4
 
-/** LPC settings */
-#define TNS_MIN_PRED_ORDER 0
-#define MAX_LPC_PRECISION  4   /* 4 bits ltp coeff precision */
-#define TNS_LPC_PASSES     2
-#define MAX_LPC_SHIFT      4
+/* TNS will only be used if the LPC gain is within these margins */
+#define TNS_GAIN_THRESHOLD_LOW  1.395f
+#define TNS_GAIN_THRESHOLD_HIGH 11.19f
+
+/* Do not use TNS if the psy band spread is below this value */
+#define TNS_SPREAD_THRESHOLD 20.081512f
+
+/* Allows to reverse the filter direction if the band energy is uneven */
+#define TNS_DIRECTION_VARY 1
 
 void ff_aac_encode_tns_info(AACEncContext *s, SingleChannelElement *sce);
+void ff_aac_apply_tns(AACEncContext *s, SingleChannelElement *sce);
 void ff_aac_search_for_tns(AACEncContext *s, SingleChannelElement *sce);
 
 #endif /* AVCODEC_AACENC_TNS_H */