1 files changed, 0 insertions, 91 deletions
diff --git a/pd/portaudio/pa_common/pa_dither.c b/pd/portaudio/pa_common/pa_dither.c
deleted file mode 100644
index 10f43e69..00000000
--- a/pd/portaudio/pa_common/pa_dither.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * $Id: pa_dither.c,v 1.1.2.3 2002/06/16 13:11:02 rossbencina Exp $
- * Portable Audio I/O Library triangular dither generator
- *
- * Based on the Open Source API proposed by Ross Bencina
- * Copyright (c) 1999-2002 Phil Burk, Ross Bencina
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files
- * (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge,
- * publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * Any person wishing to distribute modifications to the Software is
- * requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
- * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include "pa_dither.h"
-
-#define PA_DITHER_BITS_   (15)
-
-
-void PaUtil_InitializeTriangularDitherState( PaUtilTriangularDitherGenerator *state )
-{
-    state->previous = 0;
-    state->randSeed1 = 22222;
-    state->randSeed2 = 5555555;
-}
-
-
-signed long PaUtil_Generate16BitTriangularDither( PaUtilTriangularDitherGenerator *state )
-{
-    signed long current, highPass;
-
-    /* Generate two random numbers. */
-    state->randSeed1 = (state->randSeed1 * 196314165) + 907633515;
-    state->randSeed2 = (state->randSeed2 * 196314165) + 907633515;
-
-    /* Generate triangular distribution about 0.
-     * Shift before adding to prevent overflow which would skew the distribution.
-     * Also shift an extra bit for the high pass filter. 
-     */
-#define DITHER_SHIFT_  ((32 - PA_DITHER_BITS_) + 1)
-    current = (((signed long)state->randSeed1)>>DITHER_SHIFT_) +
-              (((signed long)state->randSeed2)>>DITHER_SHIFT_);
-
-    /* High pass filter to reduce audibility. */
-    highPass = current - state->previous;
-    state->previous = current;
-    return highPass;
-}
-
-/* Multiply by PA_FLOAT_DITHER_SCALE_ to get a float between -2.0 and +1.99999 */
-#define PA_FLOAT_DITHER_SCALE_  (1.0f / ((1<<PA_DITHER_BITS_)-1))
-static const float const_float_dither_scale_ = PA_FLOAT_DITHER_SCALE_;
-
-float PaUtil_GenerateFloatTriangularDither( PaUtilTriangularDitherGenerator *state )
-{
-    signed long current, highPass;
-
-    /* Generate two random numbers. */
-    state->randSeed1 = (state->randSeed1 * 196314165) + 907633515;
-    state->randSeed2 = (state->randSeed2 * 196314165) + 907633515;
-
-    /* Generate triangular distribution about 0.
-     * Shift before adding to prevent overflow which would skew the distribution.
-     * Also shift an extra bit for the high pass filter. 
-     */
-#define DITHER_SHIFT_  ((32 - PA_DITHER_BITS_) + 1)
-    current = (((signed long)state->randSeed1)>>DITHER_SHIFT_) +
-              (((signed long)state->randSeed2)>>DITHER_SHIFT_);
-
-    /* High pass filter to reduce audibility. */
-    highPass = current - state->previous;
-    state->previous = current;
-    return ((float)highPass) * const_float_dither_scale_;
-}