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author | Andreas Huber <andih@google.com> | 2009-12-07 09:56:32 -0800 |
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committer | Andreas Huber <andih@google.com> | 2009-12-07 11:02:28 -0800 |
commit | dacaa73ae5010b66f4224d70a520945e5b653544 (patch) | |
tree | a2c9e71b6337dd25d149bd5fa43f7a782e9387fb /media/libstagefright/codecs/aacdec/s_tnsfilt.h | |
parent | 5921fb51e0219ddd7cad439a73495f320c57d50e (diff) | |
download | frameworks_base-dacaa73ae5010b66f4224d70a520945e5b653544.zip frameworks_base-dacaa73ae5010b66f4224d70a520945e5b653544.tar.gz frameworks_base-dacaa73ae5010b66f4224d70a520945e5b653544.tar.bz2 |
Initial check in of stagefright software AAC decoder based on PV source code.
Diffstat (limited to 'media/libstagefright/codecs/aacdec/s_tnsfilt.h')
-rw-r--r-- | media/libstagefright/codecs/aacdec/s_tnsfilt.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/aacdec/s_tnsfilt.h b/media/libstagefright/codecs/aacdec/s_tnsfilt.h new file mode 100644 index 0000000..c1d78af --- /dev/null +++ b/media/libstagefright/codecs/aacdec/s_tnsfilt.h @@ -0,0 +1,132 @@ +/* ------------------------------------------------------------------ + * Copyright (C) 1998-2009 PacketVideo + * + * 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. + * ------------------------------------------------------------------- + */ +/* + + Pathname: s_TNSfilt.h + +------------------------------------------------------------------------------ + REVISION HISTORY + + Description: Added lpc, start, & size, so the data from + tns_inv_subblock can be shared with tns_decode_subblock. + + Description: Removed lpc to save 2KB of memory (on 32-bit machines.) + This change requires tns_decode_coef.c to perform calculations in place. + + Description: Removed start & size. start_band and stop_band can simply + take on a new meaning after this function. (coef index, rather than + scalefactor band index.) + + Description: Had to add "start_coef" and "stop_coef" in order to preserve + values "start_band" and "stop_band." This required a change to + tns_setup_filter.c also. + + Description: Had to add element "q_lpc" to store the q-format of the lpc + coefficients passed via "coef." + + Description: Moved lpc_coef array up to the s_TNS_frame_info.h structure. + + Description: + (1) Modified to include the lines... + + #ifdef __cplusplus + extern "C" { + #endif + + #ifdef __cplusplus + } + #endif + + (2) Updated the copyright header. + + Who: Date: + Description: +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + This include file defines the structure, s_TNSfilt + +------------------------------------------------------------------------------ +*/ + +/*---------------------------------------------------------------------------- +; CONTINUE ONLY IF NOT ALREADY DEFINED +----------------------------------------------------------------------------*/ +#ifndef S_TNSFILT_H +#define S_TNSFILT_H + +#ifdef __cplusplus +extern "C" +{ +#endif + + /*---------------------------------------------------------------------------- + ; INCLUDES + ----------------------------------------------------------------------------*/ +#include "pv_audio_type_defs.h" +#include "e_tns_const.h" + + /*---------------------------------------------------------------------------- + ; MACROS + ; Define module specific macros here + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; DEFINES + ; Include all pre-processor statements here. + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; EXTERNAL VARIABLES REFERENCES + ; Declare variables used in this module but defined elsewhere + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; SIMPLE TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; ENUMERATED TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; STRUCTURES TYPEDEF'S + ----------------------------------------------------------------------------*/ + + typedef struct + { + Int start_band; + Int stop_band; + Int start_coef; + Int stop_coef; + UInt order; + Int direction; + Int q_lpc; + + } TNSfilt; + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; Function Prototype declaration + ----------------------------------------------------------------------------*/ + +#ifdef __cplusplus +} +#endif + +#endif /* S_TNSFILT_H */ |