From b5716df4cb2837bbbc42195cf1aefcf03e21d6a6 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Fri, 24 Jun 2011 01:25:21 -0400 Subject: Build librbcodec with DSP and metadata. All associated files are moved to /lib/rbcodec. Change-Id: I572ddd2b8a996aae1e98c081d06b1ed356dce222 --- lib/rbcodec/dsp/tdspeed.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 lib/rbcodec/dsp/tdspeed.h (limited to 'lib/rbcodec/dsp/tdspeed.h') diff --git a/lib/rbcodec/dsp/tdspeed.h b/lib/rbcodec/dsp/tdspeed.h new file mode 100644 index 0000000000..e91eeb1701 --- /dev/null +++ b/lib/rbcodec/dsp/tdspeed.h @@ -0,0 +1,49 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2006 by Nicolas Pitre + * Copyright (C) 2006-2007 by Stéphane Doyon + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ + +#ifndef _TDSPEED_H +#define _TDSPEED_H + +#include "dsp.h" + +#define TDSPEED_OUTBUFSIZE 4096 + +/* some #define functions to get the pitch, stretch and speed values based on */ +/* two known values. Remember that params are alphabetical. */ +#define GET_SPEED(pitch, stretch) \ + ((pitch * stretch + PITCH_SPEED_100 / 2L) / PITCH_SPEED_100) +#define GET_PITCH(speed, stretch) \ + ((speed * PITCH_SPEED_100 + stretch / 2L) / stretch) +#define GET_STRETCH(pitch, speed) \ + ((speed * PITCH_SPEED_100 + pitch / 2L) / pitch) + +void tdspeed_init(void); +void tdspeed_finish(void); +bool tdspeed_config(int samplerate, bool stereo, int32_t factor); +long tdspeed_est_output_size(void); +long tdspeed_est_input_size(long size); +int tdspeed_doit(int32_t *src[], int count); + +#define STRETCH_MAX (250L * PITCH_SPEED_PRECISION) /* 250% */ +#define STRETCH_MIN (35L * PITCH_SPEED_PRECISION) /* 35% */ + +#endif -- cgit v1.2.3