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authork-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-08-27 13:28:57 +0000
committerk-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-08-27 13:28:57 +0000
commit1ba91d5a0e1df7419a561f6dcf16a0839509a5e7 (patch)
tree3f76e96fc5a3f5b738dabce28642ff2415748ccb /Game/Code/lib/samplerate/samplerate.pas
parente9fd8ce40b4cbf006695fd6e56f84071407843c9 (diff)
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Reordering of the directories[1]: moving Game/Code to src
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1302 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'Game/Code/lib/samplerate/samplerate.pas')
-rw-r--r--Game/Code/lib/samplerate/samplerate.pas199
1 files changed, 0 insertions, 199 deletions
diff --git a/Game/Code/lib/samplerate/samplerate.pas b/Game/Code/lib/samplerate/samplerate.pas
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--- a/Game/Code/lib/samplerate/samplerate.pas
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-{*
-** Copyright (C) 2002-2004 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.
-*}
-
-{*
-** API documentation is available here:
-** http://www.mega-nerd.com/SRC/api.html
-*}
-
-unit samplerate;
-
-{$IFDEF FPC}
- {$MODE DELPHI}
- {$PACKENUM 4} (* use 4-byte enums *)
- {$PACKRECORDS C} (* GCC/Visual C/C++ compatible record packing *)
-{$ELSE}
- {$MINENUMSIZE 4} (* use 4-byte enums *)
-{$ENDIF}
-
-
-interface
-
-uses
- ctypes,
- UConfig;
-
-const
-{$IFDEF MSWINDOWS}
- LibName = 'libsamplerate-0.dll';
-{$ENDIF}
-{$IFDEF UNIX}
- LibName = 'samplerate';
- {$IFDEF DARWIN}
- {$LINKLIB libsamplerate}
- {$ENDIF}
-{$ENDIF}
-
-{ Opaque data type SRC_STATE. }
-type
- PSRC_STATE = ^SRC_STATE;
- SRC_STATE = record
- // opaque
- end;
-
-{ SRC_DATA is used to pass data to src_simple() and src_process(). }
-type
- PSRC_DATA = ^SRC_DATA;
- SRC_DATA = record
- data_in, data_out: PCfloat;
- input_frames, output_frames: clong;
- input_frames_used, output_frames_gen: clong;
- end_of_input: cint;
- src_ratio: cdouble;
- end;
-
-{ SRC_CB_DATA is used with callback based API. }
-type
- SRC_CB_DATA = record
- frames: clong;
- data_in: PCfloat;
- end;
-
-{*
-** 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.
-*}
-src_callback_t = function (cb_data: pointer; var data: PCfloat): clong; cdecl;
-
-{*
-** 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.
-*}
-function src_new(converter_type: cint; channels: cint; error: PCint): PSRC_STATE; cdecl; external LibName;
-
-{*
-** 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.
-*}
-function src_callback_new(func: src_callback_t; converter_type: cint; channels: cint;
- error: Pinteger; cb_data: pointer): PSRC_STATE; cdecl; external LibName;
-
-{*
-** Cleanup all internal allocations.
-** Always returns NULL.
-*}
-function src_delete(state: PSRC_STATE): PSRC_STATE; cdecl; external LibName;
-
-{*
-** Standard processing function.
-** Returns non zero on error.
-*}
-function src_process(state: PSRC_STATE; data: PSRC_DATA): cint; cdecl; external LibName;
-
-{*
-** Callback based processing function. Read up to frames worth of data from
-** the converter int *data and return frames read or -1 on error.
-*}
-function src_callback_read(state: PSRC_STATE; src_ratio: cdouble;
- frames: clong; data: PCfloat): clong; cdecl; external LibName;
-
-{*
-** 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.
-*}
-function src_simple(data: PSRC_DATA; converter_type: cint; channels: cint): cint; cdecl; external LibName;
-
-{*
-** 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.
-*}
-function src_get_name(converter_type: cint): {const} Pchar; cdecl; external LibName;
-function src_get_description(converter_type: cint): {const} Pchar; cdecl; external LibName;
-function src_get_version(): {const} Pchar; cdecl; external LibName;
-
-{*
-** Set a new SRC ratio. This allows step responses
-** in the conversion ratio.
-** Returns non zero on error.
-*}
-function src_set_ratio(state: PSRC_STATE; new_ratio: cdouble): cint; cdecl; external LibName;
-
-{*
-** Reset the internal SRC state.
-** Does not modify the quality settings.
-** Does not free any memory allocations.
-** Returns non zero on error.
-*}
-function src_reset(state: PSRC_STATE): cint; cdecl; external LibName;
-
-{*
-** Return TRUE if ratio is a valid conversion ratio, FALSE
-** otherwise.
-*}
-function src_is_valid_ratio(ratio: cdouble): cint; cdecl; external LibName;
-
-{*
-** Return an error number.
-*}
-function src_error(state: PSRC_STATE): cint; cdecl; external LibName;
-
-{*
-** Convert the error number into a string.
-*}
-function src_strerror(error: cint): {const} Pchar; cdecl; external LibName;
-
-{*
-** The following enums can be used to set the interpolator type
-** using the function src_set_converter().
-*}
-const
- 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.
-*}
-procedure src_short_to_float_array(input: {const} PCshort; output: PCfloat; len: cint); cdecl; external LibName;
-procedure src_float_to_short_array(input: {const} PCfloat; output: PCshort; len: cint); cdecl; external LibName;
-
-{$IF LIBSAMPLERATE_VERSION >= 1003} // 0.1.3
-procedure src_int_to_float_array(input: {const} PCint; output: PCfloat; len: cint); cdecl; external LibName;
-procedure src_float_to_int_array(input: {const} PCfloat; output: PCint; len: cint); cdecl; external LibName;
-{$IFEND}
-
-implementation
-
-end.