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