/* File format: AMR-NB   (c) 2007 robs@users.sourceforge.net * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or (at * your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser * General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA */ /* * In order to use the AMR format with SoX, you need to have an * AMR library installed at SoX build time. The SoX build system * recognizes the AMR implementations available from * http://opencore-amr.sourceforge.net/ */ #include "sox_i.h" /* Common definitions: */ enum amrnb_mode { amrnb_mode_dummy }; static const unsigned amrnb_block_size[] = {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};static char const amrnb_magic[] = "#!AMR\n";#define amr_block_size amrnb_block_size#define amr_magic amrnb_magic#define amr_priv_t amrnb_priv_t#define amr_opencore_funcs amrnb_opencore_funcs#define amr_gp3_funcs amrnb_gp3_funcs #define AMR_CODED_MAX       32                  /* max coded size */#define AMR_ENCODING        SOX_ENCODING_AMR_NB#define AMR_FORMAT_FN       lsx_amr_nb_format_fn#define AMR_FRAME           160                 /* 20ms @ 8kHz */#define AMR_MODE_MAX        7#define AMR_NAMES           "amr-nb", "anb"#define AMR_RATE            8000#define AMR_DESC            "3GPP Adaptive Multi Rate Narrow-Band (AMR-NB) lossy speech compressor" #ifdef DL_OPENCORE_AMRNB  #define AMR_FUNC  LSX_DLENTRY_DYNAMIC#else  #define AMR_FUNC  LSX_DLENTRY_STATIC#endif /* DL_AMRNB */ /* OpenCore definitions: */ #define AMR_OPENCORE 1#define AMR_OPENCORE_ENABLE_ENCODE 1 #define AMR_OPENCORE_FUNC_ENTRIES(f,x) \  AMR_FUNC(f,x, void*, Encoder_Interface_init,   (int dtx)) \  AMR_FUNC(f,x, int,   Encoder_Interface_Encode, (void* state, enum amrnb_mode mode, const short* in, unsigned char* out, int forceSpeech)) \  AMR_FUNC(f,x, void,  Encoder_Interface_exit,   (void* state)) \  AMR_FUNC(f,x, void*, Decoder_Interface_init,   (void)) \  AMR_FUNC(f,x, void,  Decoder_Interface_Decode, (void* state, const unsigned char* in, short* out, int bfi)) \  AMR_FUNC(f,x, void,  Decoder_Interface_exit,   (void* state)) \ #define AmrEncoderInit() \  Encoder_Interface_init(1)#define AmrEncoderEncode(state, mode, in, out, forceSpeech) \  Encoder_Interface_Encode(state, mode, in, out, forceSpeech)#define AmrEncoderExit(state) \  Encoder_Interface_exit(state)#define AmrDecoderInit() \  Decoder_Interface_init()#define AmrDecoderDecode(state, in, out, bfi) \  Decoder_Interface_Decode(state, in, out, bfi)#define AmrDecoderExit(state) \  Decoder_Interface_exit(state) #define AMR_OPENCORE_DESC "amr-nb OpenCore library"static const char* const amr_opencore_library_names[] ={#ifdef DL_OPENCORE_AMRNB  "libopencore-amrnb",  "libopencore-amrnb-0",#endif  NULL}; #include "amr.h"