Removed all the silk_ prefixes in source file names (not symbols)

1 files changed, 101 insertions, 0 deletions

diff --git a/silk/resampler_private_IIR_FIR.c b/silk/resampler_private_IIR_FIR.c
new file mode 100644
index 00000000..e6049f4e
--- /dev/null
+++ b/silk/resampler_private_IIR_FIR.c
@@ -0,0 +1,101 @@
+/***********************************************************************
+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.
+***********************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "SigProc_FIX.h"
+#include "resampler_private.h"
+
+static inline opus_int16 *silk_resampler_private_IIR_FIR_INTERPOL(
+            opus_int16 * out, opus_int16 * buf, opus_int32 max_index_Q16 , opus_int32 index_increment_Q16 ){
+    opus_int32 index_Q16, res_Q15;
+    opus_int16 *buf_ptr;
+    opus_int32 table_index;
+    /* Interpolate upsampled signal and store in output array */
+    for( index_Q16 = 0; index_Q16 < max_index_Q16; index_Q16 += index_increment_Q16 ) {
+        table_index = silk_SMULWB( index_Q16 & 0xFFFF, 144 );
+        buf_ptr = &buf[ index_Q16 >> 16 ];
+
+        res_Q15 = silk_SMULBB(          buf_ptr[ 0 ], silk_resampler_frac_FIR_144[       table_index ][ 0 ] );
+        res_Q15 = silk_SMLABB( res_Q15, buf_ptr[ 1 ], silk_resampler_frac_FIR_144[       table_index ][ 1 ] );
+        res_Q15 = silk_SMLABB( res_Q15, buf_ptr[ 2 ], silk_resampler_frac_FIR_144[       table_index ][ 2 ] );
+        res_Q15 = silk_SMLABB( res_Q15, buf_ptr[ 3 ], silk_resampler_frac_FIR_144[ 143 - table_index ][ 2 ] );
+        res_Q15 = silk_SMLABB( res_Q15, buf_ptr[ 4 ], silk_resampler_frac_FIR_144[ 143 - table_index ][ 1 ] );
+        res_Q15 = silk_SMLABB( res_Q15, buf_ptr[ 5 ], silk_resampler_frac_FIR_144[ 143 - table_index ][ 0 ] );
+        *out++ = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( res_Q15, 15 ) );
+    }
+    return out;
+}
+/* Upsample using a combination of allpass-based 2x upsampling and FIR interpolation */
+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                    */
+)
+{
+    silk_resampler_state_struct *S = (silk_resampler_state_struct *)SS;
+    opus_int32 nSamplesIn;
+    opus_int32 max_index_Q16, index_increment_Q16;
+    opus_int16 buf[ 2 * RESAMPLER_MAX_BATCH_SIZE_IN + RESAMPLER_ORDER_FIR_144 ];
+
+
+    /* Copy buffered samples to start of buffer */
+    silk_memcpy( buf, S->sFIR, RESAMPLER_ORDER_FIR_144 * sizeof( opus_int32 ) );
+
+    /* Iterate over blocks of frameSizeIn input samples */
+    index_increment_Q16 = S->invRatio_Q16;
+    while( 1 ) {
+        nSamplesIn = silk_min( inLen, S->batchSize );
+
+        if( S->input2x == 1 ) {
+            /* Upsample 2x */
+            S->up2_function( S->sIIR, &buf[ RESAMPLER_ORDER_FIR_144 ], in, nSamplesIn );
+        } else {
+            /* Fourth-order ARMA filter */
+            silk_resampler_private_ARMA4( S->sIIR, &buf[ RESAMPLER_ORDER_FIR_144 ], in, S->Coefs, nSamplesIn );
+        }
+
+        max_index_Q16 = silk_LSHIFT32( nSamplesIn, 16 + S->input2x );         /* +1 if 2x upsampling */
+        out = silk_resampler_private_IIR_FIR_INTERPOL(out, buf, max_index_Q16, index_increment_Q16);
+        in += nSamplesIn;
+        inLen -= nSamplesIn;
+
+        if( inLen > 0 ) {
+            /* More iterations to do; copy last part of filtered signal to beginning of buffer */
+            silk_memcpy( buf, &buf[ nSamplesIn << S->input2x ], RESAMPLER_ORDER_FIR_144 * sizeof( opus_int32 ) );
+        } else {
+            break;
+        }
+    }
+
+    /* Copy last part of filtered signal to the state for the next call */
+    silk_memcpy( S->sFIR, &buf[nSamplesIn << S->input2x ], RESAMPLER_ORDER_FIR_144 * sizeof( opus_int32 ) );
+}
+