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

1 files changed, 113 insertions, 0 deletions

diff --git a/silk/resampler_private_up2_HQ.c b/silk/resampler_private_up2_HQ.c
new file mode 100644
index 00000000..e02ee5e6
--- /dev/null
+++ b/silk/resampler_private_up2_HQ.c
@@ -0,0 +1,113 @@
+/***********************************************************************
+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"
+
+/* Upsample by a factor 2, high quality */
+/* Uses 2nd order allpass filters for the 2x upsampling, followed by a      */
+/* notch filter just above Nyquist.                                         */
+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                 */
+)
+{
+    opus_int32 k;
+    opus_int32 in32, out32_1, out32_2, Y, X;
+
+    silk_assert( silk_resampler_up2_hq_0[ 0 ] > 0 );
+    silk_assert( silk_resampler_up2_hq_0[ 1 ] < 0 );
+    silk_assert( silk_resampler_up2_hq_1[ 0 ] > 0 );
+    silk_assert( silk_resampler_up2_hq_1[ 1 ] < 0 );
+
+    /* Internal variables and state are in Q10 format */
+    for( k = 0; k < len; k++ ) {
+        /* Convert to Q10 */
+        in32 = silk_LSHIFT( (opus_int32)in[ k ], 10 );
+
+        /* First all-pass section for even output sample */
+        Y       = silk_SUB32( in32, S[ 0 ] );
+        X       = silk_SMULWB( Y, silk_resampler_up2_hq_0[ 0 ] );
+        out32_1 = silk_ADD32( S[ 0 ], X );
+        S[ 0 ]  = silk_ADD32( in32, X );
+
+        /* Second all-pass section for even output sample */
+        Y       = silk_SUB32( out32_1, S[ 1 ] );
+        X       = silk_SMLAWB( Y, Y, silk_resampler_up2_hq_0[ 1 ] );
+        out32_2 = silk_ADD32( S[ 1 ], X );
+        S[ 1 ]  = silk_ADD32( out32_1, X );
+
+        /* Biquad notch filter */
+        out32_2 = silk_SMLAWB( out32_2, S[ 5 ], silk_resampler_up2_hq_notch[ 2 ] );
+        out32_2 = silk_SMLAWB( out32_2, S[ 4 ], silk_resampler_up2_hq_notch[ 1 ] );
+        out32_1 = silk_SMLAWB( out32_2, S[ 4 ], silk_resampler_up2_hq_notch[ 0 ] );
+        S[ 5 ]  = silk_SUB32(  out32_2, S[ 5 ] );
+
+        /* Apply gain in Q15, convert back to int16 and store to output */
+        out[ 2 * k ] = (opus_int16)silk_SAT16( silk_RSHIFT32(
+            silk_SMLAWB( 256, out32_1, silk_resampler_up2_hq_notch[ 3 ] ), 9 ) );
+
+        /* First all-pass section for odd output sample */
+        Y       = silk_SUB32( in32, S[ 2 ] );
+        X       = silk_SMULWB( Y, silk_resampler_up2_hq_1[ 0 ] );
+        out32_1 = silk_ADD32( S[ 2 ], X );
+        S[ 2 ]  = silk_ADD32( in32, X );
+
+        /* Second all-pass section for odd output sample */
+        Y       = silk_SUB32( out32_1, S[ 3 ] );
+        X       = silk_SMLAWB( Y, Y, silk_resampler_up2_hq_1[ 1 ] );
+        out32_2 = silk_ADD32( S[ 3 ], X );
+        S[ 3 ]  = silk_ADD32( out32_1, X );
+
+        /* Biquad notch filter */
+        out32_2 = silk_SMLAWB( out32_2, S[ 4 ], silk_resampler_up2_hq_notch[ 2 ] );
+        out32_2 = silk_SMLAWB( out32_2, S[ 5 ], silk_resampler_up2_hq_notch[ 1 ] );
+        out32_1 = silk_SMLAWB( out32_2, S[ 5 ], silk_resampler_up2_hq_notch[ 0 ] );
+        S[ 4 ]  = silk_SUB32(  out32_2, S[ 4 ] );
+
+        /* Apply gain in Q15, convert back to int16 and store to output */
+        out[ 2 * k + 1 ] = (opus_int16)silk_SAT16( silk_RSHIFT32(
+            silk_SMLAWB( 256, out32_1, silk_resampler_up2_hq_notch[ 3 ] ), 9 ) );
+    }
+}
+
+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                 */
+)
+{
+    silk_resampler_state_struct *S = (silk_resampler_state_struct *)SS;
+    silk_resampler_private_up2_HQ( S->sIIR, out, in, len );
+}