cannam@154: /***********************************************************************
cannam@154: Copyright (c) 2006-2011, Skype Limited. All rights reserved.
cannam@154: Redistribution and use in source and binary forms, with or without
cannam@154: modification, are permitted provided that the following conditions
cannam@154: are met:
cannam@154: - Redistributions of source code must retain the above copyright notice,
cannam@154: this list of conditions and the following disclaimer.
cannam@154: - Redistributions in binary form must reproduce the above copyright
cannam@154: notice, this list of conditions and the following disclaimer in the
cannam@154: documentation and/or other materials provided with the distribution.
cannam@154: - Neither the name of Internet Society, IETF or IETF Trust, nor the
cannam@154: names of specific contributors, may be used to endorse or promote
cannam@154: products derived from this software without specific prior written
cannam@154: permission.
cannam@154: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
cannam@154: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
cannam@154: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
cannam@154: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
cannam@154: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
cannam@154: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
cannam@154: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
cannam@154: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
cannam@154: CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
cannam@154: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
cannam@154: POSSIBILITY OF SUCH DAMAGE.
cannam@154: ***********************************************************************/
cannam@154: 
cannam@154: #ifdef HAVE_CONFIG_H
cannam@154: #include "config.h"
cannam@154: #endif
cannam@154: #ifdef FIXED_POINT
cannam@154: #include "main_FIX.h"
cannam@154: #else
cannam@154: #include "main_FLP.h"
cannam@154: #endif
cannam@154: #include "tuning_parameters.h"
cannam@154: #include "cpu_support.h"
cannam@154: 
cannam@154: /*********************************/
cannam@154: /* Initialize Silk Encoder state */
cannam@154: /*********************************/
cannam@154: opus_int silk_init_encoder(
cannam@154:     silk_encoder_state_Fxx          *psEnc,                                 /* I/O  Pointer to Silk FIX encoder state                                           */
cannam@154:     int                              arch                                   /* I    Run-time architecture                                                       */
cannam@154: )
cannam@154: {
cannam@154:     opus_int ret = 0;
cannam@154: 
cannam@154:     /* Clear the entire encoder state */
cannam@154:     silk_memset( psEnc, 0, sizeof( silk_encoder_state_Fxx ) );
cannam@154: 
cannam@154:     psEnc->sCmn.arch = arch;
cannam@154: 
cannam@154:     psEnc->sCmn.variable_HP_smth1_Q15 = silk_LSHIFT( silk_lin2log( SILK_FIX_CONST( VARIABLE_HP_MIN_CUTOFF_HZ, 16 ) ) - ( 16 << 7 ), 8 );
cannam@154:     psEnc->sCmn.variable_HP_smth2_Q15 = psEnc->sCmn.variable_HP_smth1_Q15;
cannam@154: 
cannam@154:     /* Used to deactivate LSF interpolation, pitch prediction */
cannam@154:     psEnc->sCmn.first_frame_after_reset = 1;
cannam@154: 
cannam@154:     /* Initialize Silk VAD */
cannam@154:     ret += silk_VAD_Init( &psEnc->sCmn.sVAD );
cannam@154: 
cannam@154:     return  ret;
cannam@154: }