| /* |
| ** 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 |
| */ |
| |
| #ifndef COMMON_H_INCLUDED |
| #define COMMON_H_INCLUDED |
| |
| #ifdef HAVE_STDINT_H |
| #include <stdint.h> |
| #elif (SIZEOF_INT == 4) |
| typedef int int32_t ; |
| #elif (SIZEOF_LONG == 4) |
| typedef long int32_t ; |
| #endif |
| |
| #define SRC_MAX_RATIO 256 |
| #define SRC_MAX_RATIO_STR "256" |
| |
| #define SRC_MIN_RATIO_DIFF (1e-20) |
| |
| #define MAX(a,b) (((a) > (b)) ? (a) : (b)) |
| #define MIN(a,b) (((a) < (b)) ? (a) : (b)) |
| |
| #define ARRAY_LEN(x) ((int) (sizeof (x) / sizeof ((x) [0]))) |
| #define OFFSETOF(type,member) ((int) (&((type*) 0)->member)) |
| |
| #define MAKE_MAGIC(a,b,c,d,e,f) ((a) + ((b) << 4) + ((c) << 8) + ((d) << 12) + ((e) << 16) + ((f) << 20)) |
| |
| /* |
| ** Inspiration : http://sourcefrog.net/weblog/software/languages/C/unused.html |
| */ |
| #ifdef UNUSED |
| #elif defined (__GNUC__) |
| # define UNUSED(x) UNUSED_ ## x __attribute__ ((unused)) |
| #elif defined (__LCLINT__) |
| # define UNUSED(x) /*@unused@*/ x |
| #else |
| # define UNUSED(x) x |
| #endif |
| |
| #ifdef __GNUC__ |
| # define WARN_UNUSED __attribute__ ((warn_unused_result)) |
| #else |
| # define WARN_UNUSED |
| #endif |
| |
| |
| #include "samplerate.h" |
| |
| enum |
| { SRC_FALSE = 0, |
| SRC_TRUE = 1, |
| |
| SRC_MODE_PROCESS = 555, |
| SRC_MODE_CALLBACK = 556 |
| } ; |
| |
| enum |
| { SRC_ERR_NO_ERROR = 0, |
| |
| SRC_ERR_MALLOC_FAILED, |
| SRC_ERR_BAD_STATE, |
| SRC_ERR_BAD_DATA, |
| SRC_ERR_BAD_DATA_PTR, |
| SRC_ERR_NO_PRIVATE, |
| SRC_ERR_BAD_SRC_RATIO, |
| SRC_ERR_BAD_PROC_PTR, |
| SRC_ERR_SHIFT_BITS, |
| SRC_ERR_FILTER_LEN, |
| SRC_ERR_BAD_CONVERTER, |
| SRC_ERR_BAD_CHANNEL_COUNT, |
| SRC_ERR_SINC_BAD_BUFFER_LEN, |
| SRC_ERR_SIZE_INCOMPATIBILITY, |
| SRC_ERR_BAD_PRIV_PTR, |
| SRC_ERR_BAD_SINC_STATE, |
| SRC_ERR_DATA_OVERLAP, |
| SRC_ERR_BAD_CALLBACK, |
| SRC_ERR_BAD_MODE, |
| SRC_ERR_NULL_CALLBACK, |
| SRC_ERR_NO_VARIABLE_RATIO, |
| SRC_ERR_SINC_PREPARE_DATA_BAD_LEN, |
| |
| /* This must be the last error number. */ |
| SRC_ERR_MAX_ERROR |
| } ; |
| |
| typedef struct SRC_PRIVATE_tag |
| { double last_ratio, last_position ; |
| |
| int error ; |
| int channels ; |
| |
| /* SRC_MODE_PROCESS or SRC_MODE_CALLBACK */ |
| int mode ; |
| |
| /* Pointer to data to converter specific data. */ |
| void *private_data ; |
| |
| /* Varispeed process function. */ |
| int (*vari_process) (struct SRC_PRIVATE_tag *psrc, SRC_DATA *data) ; |
| |
| /* Constant speed process function. */ |
| int (*const_process) (struct SRC_PRIVATE_tag *psrc, SRC_DATA *data) ; |
| |
| /* State reset. */ |
| void (*reset) (struct SRC_PRIVATE_tag *psrc) ; |
| |
| /* Data specific to SRC_MODE_CALLBACK. */ |
| src_callback_t callback_func ; |
| void *user_callback_data ; |
| long saved_frames ; |
| float *saved_data ; |
| } SRC_PRIVATE ; |
| |
| /* In src_sinc.c */ |
| const char* sinc_get_name (int src_enum) ; |
| const char* sinc_get_description (int src_enum) ; |
| |
| int sinc_set_converter (SRC_PRIVATE *psrc, int src_enum) ; |
| |
| /* In src_linear.c */ |
| const char* linear_get_name (int src_enum) ; |
| const char* linear_get_description (int src_enum) ; |
| |
| int linear_set_converter (SRC_PRIVATE *psrc, int src_enum) ; |
| |
| /* In src_zoh.c */ |
| const char* zoh_get_name (int src_enum) ; |
| const char* zoh_get_description (int src_enum) ; |
| |
| int zoh_set_converter (SRC_PRIVATE *psrc, int src_enum) ; |
| |
| /*---------------------------------------------------------- |
| ** Common static inline functions. |
| */ |
| |
| static inline double |
| fmod_one (double x) |
| { double res ; |
| |
| res = x - lrint (x) ; |
| if (res < 0.0) |
| return res + 1.0 ; |
| |
| return res ; |
| } /* fmod_one */ |
| |
| #endif /* COMMON_H_INCLUDED */ |
| |