diff -r 000000000000 -r 0e761a78d257 gst_plugins_base/gst/audioresample/resample.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gst_plugins_base/gst/audioresample/resample.h Thu Dec 17 08:53:32 2009 +0200 @@ -0,0 +1,200 @@ +/* Resampling library + * Copyright (C) <2001> David Schleef + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + + +#ifndef __RESAMPLE_H__ +#define __RESAMPLE_H__ + +#include "functable.h" +#include "buffer.h" + +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +#ifdef WIN32 +#define rint(x) (floor((x)+0.5)) +#endif + +typedef enum { + RESAMPLE_FORMAT_S16 = 0, + RESAMPLE_FORMAT_S32, + RESAMPLE_FORMAT_F32, + RESAMPLE_FORMAT_F64 +} ResampleFormat; + +typedef void (*ResampleCallback) (void *); + +typedef struct _ResampleState ResampleState; + +struct _ResampleState { + /* parameters */ + + int n_channels; + ResampleFormat format; + + int filter_length; + + double i_rate; + double o_rate; + + int method; + + /* internal parameters */ + + int need_reinit; + + double halftaps; + + /* filter state */ + + unsigned char *o_buf; + int o_size; + + AudioresampleBufferQueue *queue; + int eos; + int started; + + int sample_size; + + unsigned char *buffer; + int buffer_len; + int buffer_filled; + + double i_start; + double o_start; + + double i_inc; + double o_inc; + + double sinc_scale; + + double i_end; + double o_end; + + int i_samples; + int o_samples; + + //void *i_buf; + + Functable *ft; + + double *out_tmp; +}; +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + + +void resample_init (void); +void resample_cleanup (void); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + + +ResampleState *resample_new (void); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +void resample_free (ResampleState *state); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + + +void resample_add_input_data (ResampleState * r, void *data, int size, + ResampleCallback free_func, void *closure); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +void resample_input_eos (ResampleState *r); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +void resample_input_flush (ResampleState *r); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +void resample_input_pushthrough (ResampleState *r); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + + +int resample_get_output_size_for_input (ResampleState * r, int size); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +int resample_get_input_size_for_output (ResampleState * r, int size); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + + +int resample_get_output_size (ResampleState *r); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +int resample_get_output_data (ResampleState *r, void *data, int size); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + + +void resample_set_filter_length (ResampleState *r, int length); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +void resample_set_input_rate (ResampleState *r, double rate); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +void resample_set_output_rate (ResampleState *r, double rate); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +void resample_set_n_channels (ResampleState *r, int n_channels); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +void resample_set_format (ResampleState *r, ResampleFormat format); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +void resample_set_method (ResampleState *r, int method); +#ifdef __SYMBIAN32__ +IMPORT_C +#endif + +int resample_format_size (ResampleFormat format); + +#endif /* __RESAMPLE_H__ */ +