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Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/inc/cnst.h')
| -rw-r--r-- | media/libstagefright/codecs/amrwbenc/inc/cnst.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/inc/cnst.h b/media/libstagefright/codecs/amrwbenc/inc/cnst.h new file mode 100644 index 0000000..5395d2d --- /dev/null +++ b/media/libstagefright/codecs/amrwbenc/inc/cnst.h @@ -0,0 +1,81 @@ +/* + ** Copyright 2003-2010, VisualOn, Inc. + ** + ** Licensed under the Apache License, Version 2.0 (the "License"); + ** you may not use this file except in compliance with the License. + ** You may obtain a copy of the License at + ** + ** http://www.apache.org/licenses/LICENSE-2.0 + ** + ** Unless required by applicable law or agreed to in writing, software + ** distributed under the License is distributed on an "AS IS" BASIS, + ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + ** See the License for the specific language governing permissions and + ** limitations under the License. + */ + + +/*--------------------------------------------------------------------------* + * CNST.H * + *--------------------------------------------------------------------------* + * Codec constant parameters (coder and decoder) * + *--------------------------------------------------------------------------*/ + +#ifndef __CNST_H__ +#define __CNST_H__ + +#define L_FRAME16k 320 /* Frame size at 16kHz */ +#define L_FRAME 256 /* Frame size */ +#define L_SUBFR16k 80 /* Subframe size at 16kHz */ + +#define L_SUBFR 64 /* Subframe size */ +#define NB_SUBFR 4 /* Number of subframe per frame */ + +#define L_NEXT 64 /* Overhead in LP analysis */ +#define L_WINDOW 384 /* window size in LP analysis */ +#define L_TOTAL 384 /* Total size of speech buffer. */ +#define M 16 /* Order of LP filter */ +#define M16k 20 + +#define L_FILT16k 15 /* Delay of down-sampling filter */ +#define L_FILT 12 /* Delay of up-sampling filter */ + +#define GP_CLIP 15565 /* Pitch gain clipping = 0.95 Q14 */ +#define PIT_SHARP 27853 /* pitch sharpening factor = 0.85 Q15 */ + +#define PIT_MIN 34 /* Minimum pitch lag with resolution 1/4 */ +#define PIT_FR2 128 /* Minimum pitch lag with resolution 1/2 */ +#define PIT_FR1_9b 160 /* Minimum pitch lag with resolution 1 */ +#define PIT_FR1_8b 92 /* Minimum pitch lag with resolution 1 */ +#define PIT_MAX 231 /* Maximum pitch lag */ +#define L_INTERPOL (16+1) /* Length of filter for interpolation */ + +#define OPL_DECIM 2 /* Decimation in open-loop pitch analysis */ + +#define PREEMPH_FAC 22282 /* preemphasis factor (0.68 in Q15) */ +#define GAMMA1 30147 /* Weighting factor (numerator) (0.92 in Q15) */ +#define TILT_FAC 22282 /* tilt factor (denominator) (0.68 in Q15) */ + +#define Q_MAX 8 /* scaling max for signal (see syn_filt_32) */ + +#define RANDOM_INITSEED 21845 /* own random init value */ + +#define L_MEANBUF 3 +#define ONE_PER_MEANBUF 10923 + +#define MODE_7k 0 +#define MODE_9k 1 +#define MODE_12k 2 +#define MODE_14k 3 +#define MODE_16k 4 +#define MODE_18k 5 +#define MODE_20k 6 +#define MODE_23k 7 +#define MODE_24k 8 +#define MRDTX 9 +#define NUM_OF_MODES 10 /* see bits.h for bits definition */ + +#define EHF_MASK (Word16)0x0008 /* homing frame pattern */ + +#endif //__CNST_H__ + |