187 lines
7.7 KiB
C
187 lines
7.7 KiB
C
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/*
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* This source code is public domain.
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*
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* Authors: Kenton Varda <temporal@gauge3d.org> (C interface wrapper)
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*/
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#ifndef MODPLUG_MODPLUG_H
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#define MODPLUG_MODPLUG_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(_WIN32) || defined(__CYGWIN__)
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# if defined(MODPLUG_BUILD) && defined(DLL_EXPORT) /* building libmodplug as a dll for windows */
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# define MODPLUG_EXPORT __declspec(dllexport)
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# elif defined(MODPLUG_BUILD) || defined(MODPLUG_STATIC) /* building or using static libmodplug for windows */
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# define MODPLUG_EXPORT
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# else
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# define MODPLUG_EXPORT __declspec(dllimport) /* using libmodplug dll for windows */
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# endif
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/* FIXME: USE VISIBILITY ATTRIBUTES HERE */
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#elif defined(MODPLUG_BUILD)
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#define MODPLUG_EXPORT
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#else
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#define MODPLUG_EXPORT
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#endif
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struct _ModPlugFile;
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typedef struct _ModPlugFile ModPlugFile;
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struct _ModPlugNote {
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unsigned char Note;
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unsigned char Instrument;
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unsigned char VolumeEffect;
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unsigned char Effect;
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unsigned char Volume;
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unsigned char Parameter;
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};
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typedef struct _ModPlugNote ModPlugNote;
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typedef void (*ModPlugMixerProc)(int*, unsigned long, unsigned long);
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/* Load a mod file. [data] should point to a block of memory containing the complete
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* file, and [size] should be the size of that block.
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* Return the loaded mod file on success, or NULL on failure. */
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MODPLUG_EXPORT ModPlugFile* ModPlug_Load(const void* data, int size);
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/* Unload a mod file. */
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MODPLUG_EXPORT void ModPlug_Unload(ModPlugFile* file);
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/* Read sample data into the buffer. Returns the number of bytes read. If the end
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* of the mod has been reached, zero is returned. */
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MODPLUG_EXPORT int ModPlug_Read(ModPlugFile* file, void* buffer, int size);
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/* Get the name of the mod. The returned buffer is stored within the ModPlugFile
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* structure and will remain valid until you unload the file. */
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MODPLUG_EXPORT const char* ModPlug_GetName(ModPlugFile* file);
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/* Get the length of the mod, in milliseconds. Note that this result is not always
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* accurate, especially in the case of mods with loops. */
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MODPLUG_EXPORT int ModPlug_GetLength(ModPlugFile* file);
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/* Seek to a particular position in the song. Note that seeking and MODs don't mix very
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* well. Some mods will be missing instruments for a short time after a seek, as ModPlug
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* does not scan the sequence backwards to find out which instruments were supposed to be
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* playing at that time. (Doing so would be difficult and not very reliable.) Also,
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* note that seeking is not very exact in some mods -- especially those for which
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* ModPlug_GetLength() does not report the full length. */
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MODPLUG_EXPORT void ModPlug_Seek(ModPlugFile* file, int millisecond);
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enum _ModPlug_Flags
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{
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MODPLUG_ENABLE_OVERSAMPLING = 1 << 0, /* Enable oversampling (*highly* recommended) */
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MODPLUG_ENABLE_NOISE_REDUCTION = 1 << 1, /* Enable noise reduction */
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MODPLUG_ENABLE_REVERB = 1 << 2, /* Enable reverb */
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MODPLUG_ENABLE_MEGABASS = 1 << 3, /* Enable megabass */
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MODPLUG_ENABLE_SURROUND = 1 << 4 /* Enable surround sound. */
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};
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enum _ModPlug_ResamplingMode
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{
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MODPLUG_RESAMPLE_NEAREST = 0, /* No interpolation (very fast, extremely bad sound quality) */
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MODPLUG_RESAMPLE_LINEAR = 1, /* Linear interpolation (fast, good quality) */
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MODPLUG_RESAMPLE_SPLINE = 2, /* Cubic spline interpolation (high quality) */
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MODPLUG_RESAMPLE_FIR = 3 /* 8-tap fir filter (extremely high quality) */
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};
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typedef struct _ModPlug_Settings
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{
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int mFlags; /* One or more of the MODPLUG_ENABLE_* flags above, bitwise-OR'ed */
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/* Note that ModPlug always decodes sound at 44100kHz, 32 bit, stereo and then
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* down-mixes to the settings you choose. */
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int mChannels; /* Number of channels - 1 for mono or 2 for stereo */
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int mBits; /* Bits per sample - 8, 16, or 32 */
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int mFrequency; /* Sampling rate - 11025, 22050, or 44100 */
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int mResamplingMode; /* One of MODPLUG_RESAMPLE_*, above */
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int mStereoSeparation; /* Stereo separation, 1 - 256 */
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int mMaxMixChannels; /* Maximum number of mixing channels (polyphony), 32 - 256 */
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int mReverbDepth; /* Reverb level 0(quiet)-100(loud) */
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int mReverbDelay; /* Reverb delay in ms, usually 40-200ms */
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int mBassAmount; /* XBass level 0(quiet)-100(loud) */
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int mBassRange; /* XBass cutoff in Hz 10-100 */
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int mSurroundDepth; /* Surround level 0(quiet)-100(heavy) */
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int mSurroundDelay; /* Surround delay in ms, usually 5-40ms */
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int mLoopCount; /* Number of times to loop. Zero prevents looping.
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-1 loops forever. */
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} ModPlug_Settings;
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/* Get and set the mod decoder settings. All options, except for channels, bits-per-sample,
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* sampling rate, and loop count, will take effect immediately. Those options which don't
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* take effect immediately will take effect the next time you load a mod. */
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MODPLUG_EXPORT void ModPlug_GetSettings(ModPlug_Settings* settings);
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MODPLUG_EXPORT void ModPlug_SetSettings(const ModPlug_Settings* settings);
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/* New ModPlug API Functions */
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/* NOTE: Master Volume (1-512) */
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MODPLUG_EXPORT unsigned int ModPlug_GetMasterVolume(ModPlugFile* file) ;
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MODPLUG_EXPORT void ModPlug_SetMasterVolume(ModPlugFile* file,unsigned int cvol) ;
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MODPLUG_EXPORT int ModPlug_GetCurrentSpeed(ModPlugFile* file);
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MODPLUG_EXPORT int ModPlug_GetCurrentTempo(ModPlugFile* file);
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MODPLUG_EXPORT int ModPlug_GetCurrentOrder(ModPlugFile* file);
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MODPLUG_EXPORT int ModPlug_GetCurrentPattern(ModPlugFile* file);
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MODPLUG_EXPORT int ModPlug_GetCurrentRow(ModPlugFile* file);
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MODPLUG_EXPORT int ModPlug_GetPlayingChannels(ModPlugFile* file);
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MODPLUG_EXPORT void ModPlug_SeekOrder(ModPlugFile* file,int order);
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MODPLUG_EXPORT int ModPlug_GetModuleType(ModPlugFile* file);
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MODPLUG_EXPORT char* ModPlug_GetMessage(ModPlugFile* file);
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#ifndef MODPLUG_NO_FILESAVE
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/*
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* EXPERIMENTAL Export Functions
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*/
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/*Export to a Scream Tracker 3 S3M module. EXPERIMENTAL (only works on Little-Endian platforms)*/
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MODPLUG_EXPORT char ModPlug_ExportS3M(ModPlugFile* file, const char* filepath);
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/*Export to a Extended Module (XM). EXPERIMENTAL (only works on Little-Endian platforms)*/
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MODPLUG_EXPORT char ModPlug_ExportXM(ModPlugFile* file, const char* filepath);
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/*Export to a Amiga MOD file. EXPERIMENTAL.*/
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MODPLUG_EXPORT char ModPlug_ExportMOD(ModPlugFile* file, const char* filepath);
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/*Export to a Impulse Tracker IT file. Should work OK in Little-Endian & Big-Endian platforms :-) */
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MODPLUG_EXPORT char ModPlug_ExportIT(ModPlugFile* file, const char* filepath);
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#endif // MODPLUG_NO_FILESAVE
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MODPLUG_EXPORT unsigned int ModPlug_NumInstruments(ModPlugFile* file);
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MODPLUG_EXPORT unsigned int ModPlug_NumSamples(ModPlugFile* file);
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MODPLUG_EXPORT unsigned int ModPlug_NumPatterns(ModPlugFile* file);
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MODPLUG_EXPORT unsigned int ModPlug_NumChannels(ModPlugFile* file);
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MODPLUG_EXPORT unsigned int ModPlug_SampleName(ModPlugFile* file, unsigned int qual, char* buff);
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MODPLUG_EXPORT unsigned int ModPlug_InstrumentName(ModPlugFile* file, unsigned int qual, char* buff);
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/*
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* Retrieve pattern note-data
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*/
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MODPLUG_EXPORT ModPlugNote* ModPlug_GetPattern(ModPlugFile* file, int pattern, unsigned int* numrows);
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/*
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* =================
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* Mixer callback
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* =================
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*
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* Use this callback if you want to 'modify' the mixed data of LibModPlug.
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*
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* void proc(int* buffer,unsigned long channels,unsigned long nsamples) ;
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*
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* 'buffer': A buffer of mixed samples
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* 'channels': N. of channels in the buffer
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* 'nsamples': N. of samples in the buffeer (without taking care of n.channels)
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*
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* (Samples are signed 32-bit integers)
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*/
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MODPLUG_EXPORT void ModPlug_InitMixerCallback(ModPlugFile* file,ModPlugMixerProc proc) ;
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MODPLUG_EXPORT void ModPlug_UnloadMixerCallback(ModPlugFile* file) ;
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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