diff options
author | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2011-09-16 12:16:53 +0400 |
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committer | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2011-09-16 12:16:53 +0400 |
commit | 1c2f5633d101c08b5ef8095a8682d3d52cbd952d (patch) | |
tree | 66f80e67f075db5fa5233759a89f475d8bedade2 /silk/resampler_private.h | |
parent | fb3a437c9dabb4aafe4a3927158161590ed745ab (diff) |
Removed all the silk_ prefixes in source file names (not symbols)
Diffstat (limited to 'silk/resampler_private.h')
-rw-r--r-- | silk/resampler_private.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/silk/resampler_private.h b/silk/resampler_private.h new file mode 100644 index 00000000..de4adcaa --- /dev/null +++ b/silk/resampler_private.h @@ -0,0 +1,121 @@ +/*********************************************************************** +Copyright (c) 2006-2011, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +***********************************************************************/ + +#ifndef SILK_RESAMPLER_H +#define SILK_RESAMPLER_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include "SigProc_FIX.h" +#include "resampler_structs.h" +#include "resampler_rom.h" + +/* Number of input samples to process in the inner loop */ +#define RESAMPLER_MAX_BATCH_SIZE_IN 480 + +/* Description: Hybrid IIR/FIR polyphase implementation of resampling */ +void silk_resampler_private_IIR_FIR( + void *SS, /* I/O: Resampler state */ + opus_int16 out[], /* O: Output signal */ + const opus_int16 in[], /* I: Input signal */ + opus_int32 inLen /* I: Number of input samples */ +); + +/* Description: Hybrid IIR/FIR polyphase implementation of resampling */ +void silk_resampler_private_down_FIR( + void *SS, /* I/O: Resampler state */ + opus_int16 out[], /* O: Output signal */ + const opus_int16 in[], /* I: Input signal */ + opus_int32 inLen /* I: Number of input samples */ +); + +/* Copy */ +void silk_resampler_private_copy( + void *SS, /* I/O: Resampler state (unused) */ + opus_int16 out[], /* O: Output signal */ + const opus_int16 in[], /* I: Input signal */ + opus_int32 inLen /* I: Number of input samples */ +); + +/* Upsample by a factor 2, high quality */ +void silk_resampler_private_up2_HQ_wrapper( + void *SS, /* I/O: Resampler state (unused) */ + opus_int16 *out, /* O: Output signal [ 2 * len ] */ + const opus_int16 *in, /* I: Input signal [ len ] */ + opus_int32 len /* I: Number of input samples */ +); + +/* Upsample by a factor 2, high quality */ +void silk_resampler_private_up2_HQ( + opus_int32 *S, /* I/O: Resampler state [ 6 ] */ + opus_int16 *out, /* O: Output signal [ 2 * len ] */ + const opus_int16 *in, /* I: Input signal [ len ] */ + opus_int32 len /* I: Number of input samples */ +); + +/* Upsample 4x, low quality */ +void silk_resampler_private_up4( + opus_int32 *S, /* I/O: State vector [ 2 ] */ + opus_int16 *out, /* O: Output signal [ 4 * len ] */ + const opus_int16 *in, /* I: Input signal [ len ] */ + opus_int32 len /* I: Number of input samples */ +); + +/* Downsample 4x, low quality */ +void silk_resampler_private_down4( + opus_int32 *S, /* I/O: State vector [ 2 ] */ + opus_int16 *out, /* O: Output signal [ floor(len/2) ] */ + const opus_int16 *in, /* I: Input signal [ len ] */ + opus_int32 inLen /* I: Number of input samples */ +); + +/* Second order AR filter */ +void silk_resampler_private_AR2( + opus_int32 S[], /* I/O: State vector [ 2 ] */ + opus_int32 out_Q8[], /* O: Output signal */ + const opus_int16 in[], /* I: Input signal */ + const opus_int16 A_Q14[], /* I: AR coefficients, Q14 */ + opus_int32 len /* I: Signal length */ +); + +/* Fourth order ARMA filter */ +void silk_resampler_private_ARMA4( + opus_int32 S[], /* I/O: State vector [ 4 ] */ + opus_int16 out[], /* O: Output signal */ + const opus_int16 in[], /* I: Input signal */ + const opus_int16 Coef[], /* I: ARMA coefficients [ 7 ] */ + opus_int32 len /* I: Signal length */ +); + + +#ifdef __cplusplus +} +#endif +#endif /* SILK_RESAMPLER_H*/ + |