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230 lines
9.6 KiB
C
230 lines
9.6 KiB
C
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//////////////////////////////////////////////////////////////////////////////
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///
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/// SoundTouch DLL wrapper - wraps SoundTouch routines into a Dynamic Load
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/// Library interface.
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///
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/// Author : Copyright (c) Olli Parviainen
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/// Author e-mail : oparviai 'at' iki.fi
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/// SoundTouch WWW: http://www.surina.net/soundtouch
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///
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////////////////////////////////////////////////////////////////////////////////
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//
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// License :
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//
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// SoundTouch audio processing library
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// Copyright (c) Olli Parviainen
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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////////////////////////////////////////////////////////////////////////////////
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#ifndef _SoundTouchDLL_h_
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#define _SoundTouchDLL_h_
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#if defined(_WIN32) || defined(WIN32)
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// Windows
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#ifndef __cplusplus
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#error "Expected g++"
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#endif
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#ifdef DLL_EXPORTS
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#define SOUNDTOUCHDLL_API extern "C" __declspec(dllexport)
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#else
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#define SOUNDTOUCHDLL_API extern "C" __declspec(dllimport)
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#endif
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#else
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// GNU version
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#if defined(DLL_EXPORTS) || defined(SoundTouchDLL_EXPORTS)
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// GCC declaration for exporting functions
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#define SOUNDTOUCHDLL_API extern "C" __attribute__((__visibility__("default")))
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#else
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// GCC doesn't require DLL imports
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#define SOUNDTOUCHDLL_API
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#endif
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// Linux-replacements for Windows declarations:
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#define __cdecl
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typedef unsigned int DWORD;
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#define FALSE 0
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#define TRUE 1
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#endif
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typedef void * HANDLE;
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/// Create a new instance of SoundTouch processor.
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SOUNDTOUCHDLL_API HANDLE __cdecl soundtouch_createInstance();
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/// Destroys a SoundTouch processor instance.
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SOUNDTOUCHDLL_API void __cdecl soundtouch_destroyInstance(HANDLE h);
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/// Get SoundTouch library version string
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SOUNDTOUCHDLL_API const char *__cdecl soundtouch_getVersionString();
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/// Get SoundTouch library version string - alternative function for
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/// environments that can't properly handle character string as return value
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SOUNDTOUCHDLL_API void __cdecl soundtouch_getVersionString2(char* versionString, int bufferSize);
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/// Get SoundTouch library version Id
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SOUNDTOUCHDLL_API unsigned int __cdecl soundtouch_getVersionId();
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/// Sets new rate control value. Normal rate = 1.0, smaller values
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/// represent slower rate, larger faster rates.
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SOUNDTOUCHDLL_API void __cdecl soundtouch_setRate(HANDLE h, float newRate);
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/// Sets new tempo control value. Normal tempo = 1.0, smaller values
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/// represent slower tempo, larger faster tempo.
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SOUNDTOUCHDLL_API void __cdecl soundtouch_setTempo(HANDLE h, float newTempo);
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/// Sets new rate control value as a difference in percents compared
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/// to the original rate (-50 .. +100 %);
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SOUNDTOUCHDLL_API void __cdecl soundtouch_setRateChange(HANDLE h, float newRate);
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/// Sets new tempo control value as a difference in percents compared
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/// to the original tempo (-50 .. +100 %);
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SOUNDTOUCHDLL_API void __cdecl soundtouch_setTempoChange(HANDLE h, float newTempo);
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/// Sets new pitch control value. Original pitch = 1.0, smaller values
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/// represent lower pitches, larger values higher pitch.
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SOUNDTOUCHDLL_API void __cdecl soundtouch_setPitch(HANDLE h, float newPitch);
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/// Sets pitch change in octaves compared to the original pitch
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/// (-1.00 .. +1.00);
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SOUNDTOUCHDLL_API void __cdecl soundtouch_setPitchOctaves(HANDLE h, float newPitch);
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/// Sets pitch change in semi-tones compared to the original pitch
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/// (-12 .. +12);
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SOUNDTOUCHDLL_API void __cdecl soundtouch_setPitchSemiTones(HANDLE h, float newPitch);
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/// Sets the number of channels, 1 = mono, 2 = stereo, n = multichannel
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SOUNDTOUCHDLL_API void __cdecl soundtouch_setChannels(HANDLE h, unsigned int numChannels);
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/// Sets sample rate.
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SOUNDTOUCHDLL_API void __cdecl soundtouch_setSampleRate(HANDLE h, unsigned int srate);
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/// Flushes the last samples from the processing pipeline to the output.
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/// Clears also the internal processing buffers.
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//
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/// Note: This function is meant for extracting the last samples of a sound
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/// stream. This function may introduce additional blank samples in the end
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/// of the sound stream, and thus it's not recommended to call this function
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/// in the middle of a sound stream.
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SOUNDTOUCHDLL_API void __cdecl soundtouch_flush(HANDLE h);
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/// Adds 'numSamples' pcs of samples from the 'samples' memory position into
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/// the input of the object. Notice that sample rate _has_to_ be set before
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/// calling this function, otherwise throws a runtime_error exception.
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SOUNDTOUCHDLL_API void __cdecl soundtouch_putSamples(HANDLE h,
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const float *samples, ///< Pointer to sample buffer.
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unsigned int numSamples ///< Number of sample frames in buffer. Notice
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///< that in case of multi-channel sound a single
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///< sample frame contains data for all channels.
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);
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/// int16 version of soundtouch_putSamples(): This accept int16 (short) sample data
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/// and internally converts it to float format before processing
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SOUNDTOUCHDLL_API void __cdecl soundtouch_putSamples_i16(HANDLE h,
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const short *samples, ///< Pointer to sample buffer.
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unsigned int numSamples ///< Number of sample frames in buffer. Notice
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///< that in case of multi-channel sound a single
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///< sample frame contains data for all channels.
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);
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/// Clears all the samples in the object's output and internal processing
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/// buffers.
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SOUNDTOUCHDLL_API void __cdecl soundtouch_clear(HANDLE h);
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/// Changes a setting controlling the processing system behaviour. See the
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/// 'SETTING_...' defines for available setting ID's.
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///
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/// \return 'nonzero' if the setting was successfully changed, otherwise zero
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SOUNDTOUCHDLL_API int __cdecl soundtouch_setSetting(HANDLE h,
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int settingId, ///< Setting ID number. see SETTING_... defines.
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int value ///< New setting value.
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);
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/// Reads a setting controlling the processing system behaviour. See the
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/// 'SETTING_...' defines for available setting ID's.
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///
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/// \return the setting value.
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SOUNDTOUCHDLL_API int __cdecl soundtouch_getSetting(HANDLE h,
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int settingId ///< Setting ID number, see SETTING_... defines.
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);
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/// Returns number of samples currently unprocessed.
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SOUNDTOUCHDLL_API unsigned int __cdecl soundtouch_numUnprocessedSamples(HANDLE h);
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/// Adjusts book-keeping so that given number of samples are removed from beginning of the
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/// sample buffer without copying them anywhere.
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///
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/// Used to reduce the number of samples in the buffer when accessing the sample buffer directly
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/// with 'ptrBegin' function.
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SOUNDTOUCHDLL_API unsigned int __cdecl soundtouch_receiveSamples(HANDLE h,
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float *outBuffer, ///< Buffer where to copy output samples.
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unsigned int maxSamples ///< How many samples to receive at max.
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);
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/// int16 version of soundtouch_receiveSamples(): This converts internal float samples
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/// into int16 (short) return data type
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SOUNDTOUCHDLL_API unsigned int __cdecl soundtouch_receiveSamples_i16(HANDLE h,
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short *outBuffer, ///< Buffer where to copy output samples.
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unsigned int maxSamples ///< How many samples to receive at max.
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);
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/// Returns number of samples currently available.
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SOUNDTOUCHDLL_API unsigned int __cdecl soundtouch_numSamples(HANDLE h);
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/// Returns nonzero if there aren't any samples available for outputting.
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SOUNDTOUCHDLL_API int __cdecl soundtouch_isEmpty(HANDLE h);
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/// Create a new instance of BPM detector
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SOUNDTOUCHDLL_API HANDLE __cdecl bpm_createInstance(int numChannels, int sampleRate);
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/// Destroys a BPM detector instance.
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SOUNDTOUCHDLL_API void __cdecl bpm_destroyInstance(HANDLE h);
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/// Feed 'numSamples' sample frames from 'samples' into the BPM detector.
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SOUNDTOUCHDLL_API void __cdecl bpm_putSamples(HANDLE h,
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const float *samples, ///< Pointer to sample buffer.
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unsigned int numSamples ///< Number of samples in buffer. Notice
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///< that in case of stereo-sound a single sample
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///< contains data for both channels.
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);
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/// Feed 'numSamples' sample frames from 'samples' into the BPM detector.
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/// 16bit int sample format version.
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SOUNDTOUCHDLL_API void __cdecl bpm_putSamples_i16(HANDLE h,
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const short *samples, ///< Pointer to sample buffer.
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unsigned int numSamples ///< Number of samples in buffer. Notice
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///< that in case of stereo-sound a single sample
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///< contains data for both channels.
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);
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/// Analyzes the results and returns the BPM rate. Use this function to read result
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/// after whole song data has been input to the class by consecutive calls of
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/// 'inputSamples' function.
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///
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/// \return Beats-per-minute rate, or zero if detection failed.
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SOUNDTOUCHDLL_API float __cdecl bpm_getBpm(HANDLE h);
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#endif // _SoundTouchDLL_h_
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