X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Faacdectab.h;h=34b0abe729501121cb4344fc598f9c5be910abf0;hb=6752dd5aeeca9b6180d9fe0827fd438af426556e;hp=b7a9787a30d51317893037e8180ee664b6b9dd72;hpb=cc0591dab0a5508518413260c77750577c30b0d6;p=ffmpeg

diff --git a/libavcodec/aacdectab.h b/libavcodec/aacdectab.h
index b7a9787a30d..34b0abe7295 100644
--- a/libavcodec/aacdectab.h
+++ b/libavcodec/aacdectab.h
@@ -21,14 +21,14 @@
  */
 
 /**
- * @file aacdectab.h
+ * @file libavcodec/aacdectab.h
  * AAC decoder data
  * @author Oded Shimon  ( ods15 ods15 dyndns org )
  * @author Maxim Gavrilov ( maxim.gavrilov gmail com )
  */
 
-#ifndef FFMPEG_AACDECTAB_H
-#define FFMPEG_AACDECTAB_H
+#ifndef AVCODEC_AACDECTAB_H
+#define AVCODEC_AACDECTAB_H
 
 #include "aac.h"
 
@@ -142,7 +142,8 @@ static const uint16_t *swb_offset_1024[] = {
     swb_offset_1024_96, swb_offset_1024_96, swb_offset_1024_64,
     swb_offset_1024_48, swb_offset_1024_48, swb_offset_1024_32,
     swb_offset_1024_24, swb_offset_1024_24, swb_offset_1024_16,
-    swb_offset_1024_16, swb_offset_1024_16, swb_offset_1024_8
+    swb_offset_1024_16, swb_offset_1024_16, swb_offset_1024_8,
+    swb_offset_1024_8
 };
 
 static const uint16_t *swb_offset_128[] = {
@@ -151,9 +152,60 @@ static const uint16_t *swb_offset_128[] = {
     swb_offset_128_96, swb_offset_128_96, swb_offset_128_96,
     swb_offset_128_48, swb_offset_128_48, swb_offset_128_48,
     swb_offset_128_24, swb_offset_128_24, swb_offset_128_16,
-    swb_offset_128_16, swb_offset_128_16, swb_offset_128_8
+    swb_offset_128_16, swb_offset_128_16, swb_offset_128_8,
+    swb_offset_128_8
 };
 
 // @}
 
-#endif /* FFMPEG_AACDECTAB_H */
+/* @name tns_max_bands
+ * The maximum number of scalefactor bands on which TNS can operate for the long
+ * and short transforms respectively. The index to these tables is related to
+ * the sample rate of the audio.
+ * @{
+ */
+static const uint8_t tns_max_bands_1024[] = {
+    31, 31, 34, 40, 42, 51, 46, 46, 42, 42, 42, 39, 39
+};
+
+static const uint8_t tns_max_bands_128[] = {
+    9, 9, 10, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14
+};
+// @}
+
+/* @name tns_tmp2_map
+ * Tables of the tmp2[] arrays of LPC coefficients used for TNS.
+ * The suffix _M_N[] indicate the values of coef_compress and coef_res
+ * respectively.
+ * @{
+ */
+static const float tns_tmp2_map_1_3[4] = {
+     0.00000000, -0.43388373,  0.64278758,  0.34202015,
+};
+
+static const float tns_tmp2_map_0_3[8] = {
+     0.00000000, -0.43388373, -0.78183150, -0.97492790,
+     0.98480773,  0.86602539,  0.64278758,  0.34202015,
+};
+
+static const float tns_tmp2_map_1_4[8] = {
+     0.00000000, -0.20791170, -0.40673664, -0.58778524,
+     0.67369562,  0.52643216,  0.36124167,  0.18374951,
+};
+
+static const float tns_tmp2_map_0_4[16] = {
+     0.00000000, -0.20791170, -0.40673664, -0.58778524,
+    -0.74314481, -0.86602539, -0.95105654, -0.99452192,
+     0.99573416,  0.96182561,  0.89516330,  0.79801720,
+     0.67369562,  0.52643216,  0.36124167,  0.18374951,
+};
+
+static const float * const tns_tmp2_map[4] = {
+    tns_tmp2_map_0_3,
+    tns_tmp2_map_0_4,
+    tns_tmp2_map_1_3,
+    tns_tmp2_map_1_4
+};
+// @}
+
+#endif /* AVCODEC_AACDECTAB_H */