+++ /dev/null
-/*
-** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
-**
-** 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 program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-**
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
-*/
-
-/*
-** This code is part of Secret Rabbit Code aka libsamplerate. A commercial
-** use license for this code is available, please see:
-** http://www.mega-nerd.com/SRC/procedure.html
-*/
-
-/*
-** API documentation is available here:
-** http://www.mega-nerd.com/SRC/api.html
-*/
-
-#ifndef SAMPLERATE_H
-#define SAMPLERATE_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-
-/* Opaque data type SRC_STATE. */
-typedef struct SRC_STATE_tag SRC_STATE ;
-
-/* SRC_DATA is used to pass data to src_simple() and src_process(). */
-typedef struct
-{ float *data_in, *data_out ;
-
- long input_frames, output_frames ;
- long input_frames_used, output_frames_gen ;
-
- int end_of_input ;
-
- double src_ratio ;
-} SRC_DATA ;
-
-/* SRC_CB_DATA is used with callback based API. */
-typedef struct
-{ long frames ;
- float *data_in ;
-} SRC_CB_DATA ;
-
-/*
-** User supplied callback function type for use with src_callback_new()
-** and src_callback_read(). First parameter is the same pointer that was
-** passed into src_callback_new(). Second parameter is pointer to a
-** pointer. The user supplied callback function must modify *data to
-** point to the start of the user supplied float array. The user supplied
-** function must return the number of frames that **data points to.
-*/
-
-typedef long (*src_callback_t) (void *cb_data, float **data) ;
-
-/*
-** Standard initialisation function : return an anonymous pointer to the
-** internal state of the converter. Choose a converter from the enums below.
-** Error returned in *error.
-*/
-
-SRC_STATE* src_new (int converter_type, int channels, int *error) ;
-
-/*
-** Initilisation for callback based API : return an anonymous pointer to the
-** internal state of the converter. Choose a converter from the enums below.
-** The cb_data pointer can point to any data or be set to NULL. Whatever the
-** value, when processing, user supplied function "func" gets called with
-** cb_data as first parameter.
-*/
-
-SRC_STATE* src_callback_new (src_callback_t func, int converter_type, int channels,
- int *error, void* cb_data) ;
-
-/*
-** Cleanup all internal allocations.
-** Always returns NULL.
-*/
-
-SRC_STATE* src_delete (SRC_STATE *state) ;
-
-/*
-** Standard processing function.
-** Returns non zero on error.
-*/
-
-int src_process (SRC_STATE *state, SRC_DATA *data) ;
-
-/*
-** Callback based processing function. Read up to frames worth of data from
-** the converter int *data and return frames read or -1 on error.
-*/
-long src_callback_read (SRC_STATE *state, double src_ratio, long frames, float *data) ;
-
-/*
-** Simple interface for performing a single conversion from input buffer to
-** output buffer at a fixed conversion ratio.
-** Simple interface does not require initialisation as it can only operate on
-** a single buffer worth of audio.
-*/
-
-int src_simple (SRC_DATA *data, int converter_type, int channels) ;
-
-/*
-** This library contains a number of different sample rate converters,
-** numbered 0 through N.
-**
-** Return a string giving either a name or a more full description of each
-** sample rate converter or NULL if no sample rate converter exists for
-** the given value. The converters are sequentially numbered from 0 to N.
-*/
-
-const char *src_get_name (int converter_type) ;
-const char *src_get_description (int converter_type) ;
-const char *src_get_version (void) ;
-
-/*
-** Set a new SRC ratio. This allows step responses
-** in the conversion ratio.
-** Returns non zero on error.
-*/
-
-int src_set_ratio (SRC_STATE *state, double new_ratio) ;
-
-/*
-** Reset the internal SRC state.
-** Does not modify the quality settings.
-** Does not free any memory allocations.
-** Returns non zero on error.
-*/
-
-int src_reset (SRC_STATE *state) ;
-
-/*
-** Return TRUE if ratio is a valid conversion ratio, FALSE
-** otherwise.
-*/
-
-int src_is_valid_ratio (double ratio) ;
-
-/*
-** Return an error number.
-*/
-
-int src_error (SRC_STATE *state) ;
-
-/*
-** Convert the error number into a string.
-*/
-const char* src_strerror (int error) ;
-
-/*
-** The following enums can be used to set the interpolator type
-** using the function src_set_converter().
-*/
-
-enum
-{
- SRC_SINC_BEST_QUALITY = 0,
- SRC_SINC_MEDIUM_QUALITY = 1,
- SRC_SINC_FASTEST = 2,
- SRC_ZERO_ORDER_HOLD = 3,
- SRC_LINEAR = 4,
-} ;
-
-/*
-** Extra helper functions for converting from short to float and
-** back again.
-*/
-
-void src_short_to_float_array (const short *in, float *out, int len) ;
-void src_float_to_short_array (const float *in, short *out, int len) ;
-
-void src_int_to_float_array (const int *in, float *out, int len) ;
-void src_float_to_int_array (const float *in, int *out, int len) ;
-
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif /* __cplusplus */
-
-#endif /* SAMPLERATE_H */
-
projects / reactos.git / blobdiff