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vamp.h
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cannam@50: Go to the documentation of this file.
00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
cannam@50: 00002 
cannam@50: 00003 /*
cannam@50: 00004     Vamp
cannam@50: 00005 
cannam@50: 00006     An API for audio analysis and feature extraction plugins.
cannam@50: 00007 
cannam@50: 00008     Centre for Digital Music, Queen Mary, University of London.
cannam@50: 00009     Copyright 2006 Chris Cannam.
cannam@50: 00010   
cannam@50: 00011     Permission is hereby granted, free of charge, to any person
cannam@50: 00012     obtaining a copy of this software and associated documentation
cannam@50: 00013     files (the "Software"), to deal in the Software without
cannam@50: 00014     restriction, including without limitation the rights to use, copy,
cannam@50: 00015     modify, merge, publish, distribute, sublicense, and/or sell copies
cannam@50: 00016     of the Software, and to permit persons to whom the Software is
cannam@50: 00017     furnished to do so, subject to the following conditions:
cannam@50: 00018 
cannam@50: 00019     The above copyright notice and this permission notice shall be
cannam@50: 00020     included in all copies or substantial portions of the Software.
cannam@50: 00021 
cannam@50: 00022     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
cannam@50: 00023     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
cannam@50: 00024     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
cannam@50: 00025     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
cannam@50: 00026     ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
cannam@50: 00027     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
cannam@50: 00028     WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cannam@50: 00029 
cannam@50: 00030     Except as contained in this notice, the names of the Centre for
cannam@50: 00031     Digital Music; Queen Mary, University of London; and Chris Cannam
cannam@50: 00032     shall not be used in advertising or otherwise to promote the sale,
cannam@50: 00033     use or other dealings in this Software without prior written
cannam@50: 00034     authorization.
cannam@50: 00035 */
cannam@50: 00036 
cannam@50: 00037 #ifndef VAMP_HEADER_INCLUDED
cannam@50: 00038 #define VAMP_HEADER_INCLUDED
cannam@50: 00039 
cannam@50: 00040 #ifdef __cplusplus
cannam@50: 00041 extern "C" {
cannam@50: 00042 #endif
cannam@50: 00043 
cannam@50: 00053 #define VAMP_API_VERSION 2
cannam@50: 00054 
cannam@50: 00071 typedef struct _VampParameterDescriptor
cannam@50: 00072 {
cannam@50: 00074     const char *identifier;
cannam@50: 00075 
cannam@50: 00077     const char *name;
cannam@50: 00078 
cannam@50: 00080     const char *description;
cannam@50: 00081 
cannam@50: 00083     const char *unit;
cannam@50: 00084 
cannam@50: 00086     float minValue;
cannam@50: 00087 
cannam@50: 00089     float maxValue;
cannam@50: 00090 
cannam@50: 00092     float defaultValue;
cannam@50: 00093 
cannam@50: 00095     int isQuantized;
cannam@50: 00096 
cannam@50: 00098     float quantizeStep;
cannam@50: 00099 
cannam@50: 00101     const char **valueNames;
cannam@50: 00102 
cannam@50: 00103 } VampParameterDescriptor;
cannam@50: 00104 
cannam@50: 00105 typedef enum
cannam@50: 00106 {
cannam@50: 00108     vampOneSamplePerStep,
cannam@50: 00109 
cannam@50: 00111     vampFixedSampleRate,
cannam@50: 00112 
cannam@50: 00114     vampVariableSampleRate
cannam@50: 00115 
cannam@50: 00116 } VampSampleType;
cannam@50: 00117 
cannam@50: 00118 typedef struct _VampOutputDescriptor
cannam@50: 00119 {
cannam@50: 00121     const char *identifier;
cannam@50: 00122 
cannam@50: 00124     const char *name;
cannam@50: 00125 
cannam@50: 00127     const char *description;
cannam@50: 00128 
cannam@50: 00130     const char *unit;
cannam@50: 00131 
cannam@50: 00133     int hasFixedBinCount;
cannam@50: 00134 
cannam@50: 00136     unsigned int binCount;
cannam@50: 00137 
cannam@50: 00139     const char **binNames;
cannam@50: 00140 
cannam@50: 00142     int hasKnownExtents;
cannam@50: 00143     
cannam@50: 00145     float minValue;
cannam@50: 00146 
cannam@50: 00148     float maxValue;
cannam@50: 00149 
cannam@50: 00151     int isQuantized;
cannam@50: 00152 
cannam@50: 00154     float quantizeStep;
cannam@50: 00155 
cannam@50: 00157     VampSampleType sampleType;
cannam@50: 00158 
cannam@50: 00161     float sampleRate;
cannam@50: 00162 
cannam@50: 00170     int hasDuration;
cannam@50: 00171 
cannam@50: 00172 } VampOutputDescriptor;
cannam@50: 00173 
cannam@50: 00174 typedef struct _VampFeature
cannam@50: 00175 {
cannam@50: 00177     int hasTimestamp;
cannam@50: 00178 
cannam@50: 00180     int sec;
cannam@50: 00181 
cannam@50: 00183     int nsec;
cannam@50: 00184 
cannam@50: 00186     unsigned int valueCount;
cannam@50: 00187 
cannam@50: 00189     float *values;
cannam@50: 00190 
cannam@50: 00192     char *label;
cannam@50: 00193 
cannam@50: 00194 } VampFeature;
cannam@50: 00195 
cannam@50: 00196 typedef struct _VampFeatureV2
cannam@50: 00197 {
cannam@50: 00199     int hasDuration;
cannam@50: 00200 
cannam@50: 00202     int durationSec;
cannam@50: 00203 
cannam@50: 00205     int durationNsec;
cannam@50: 00206 
cannam@50: 00207 } VampFeatureV2;
cannam@50: 00208 
cannam@50: 00209 typedef union _VampFeatureUnion
cannam@50: 00210 {
cannam@50: 00211     // sizeof(featureV1) >= sizeof(featureV2) for backward compatibility
cannam@50: 00212     VampFeature   v1;
cannam@50: 00213     VampFeatureV2 v2;
cannam@50: 00214 
cannam@50: 00215 } VampFeatureUnion;
cannam@50: 00216 
cannam@50: 00217 typedef struct _VampFeatureList
cannam@50: 00218 {
cannam@50: 00220     unsigned int featureCount;
cannam@50: 00221 
cannam@50: 00235     VampFeatureUnion *features;
cannam@50: 00236 
cannam@50: 00237 } VampFeatureList;
cannam@50: 00238 
cannam@50: 00239 typedef enum
cannam@50: 00240 {
cannam@50: 00241     vampTimeDomain,
cannam@50: 00242     vampFrequencyDomain
cannam@50: 00243 
cannam@50: 00244 } VampInputDomain;
cannam@50: 00245 
cannam@50: 00246 typedef void *VampPluginHandle;
cannam@50: 00247 
cannam@50: 00248 typedef struct _VampPluginDescriptor
cannam@50: 00249 {
cannam@50: 00251     unsigned int vampApiVersion;
cannam@50: 00252 
cannam@50: 00254     const char *identifier;
cannam@50: 00255 
cannam@50: 00257     const char *name;
cannam@50: 00258 
cannam@50: 00260     const char *description;
cannam@50: 00261 
cannam@50: 00263     const char *maker;
cannam@50: 00264 
cannam@50: 00266     int pluginVersion;
cannam@50: 00267 
cannam@50: 00269     const char *copyright;
cannam@50: 00270 
cannam@50: 00272     unsigned int parameterCount;
cannam@50: 00273 
cannam@50: 00275     const VampParameterDescriptor **parameters;
cannam@50: 00276 
cannam@50: 00278     unsigned int programCount;
cannam@50: 00279 
cannam@50: 00281     const char **programs;
cannam@50: 00282 
cannam@50: 00284     VampInputDomain inputDomain;
cannam@50: 00285 
cannam@50: 00287     VampPluginHandle (*instantiate)(const struct _VampPluginDescriptor *,
cannam@50: 00288                                    float inputSampleRate);
cannam@50: 00289 
cannam@50: 00291     void (*cleanup)(VampPluginHandle);
cannam@50: 00292 
cannam@50: 00294     int (*initialise)(VampPluginHandle,
cannam@50: 00295                       unsigned int inputChannels,
cannam@50: 00296                       unsigned int stepSize, 
cannam@50: 00297                       unsigned int blockSize);
cannam@50: 00298 
cannam@50: 00300     void (*reset)(VampPluginHandle);
cannam@50: 00301 
cannam@50: 00303     float (*getParameter)(VampPluginHandle, int);
cannam@50: 00304 
cannam@50: 00306     void  (*setParameter)(VampPluginHandle, int, float);
cannam@50: 00307 
cannam@50: 00309     unsigned int (*getCurrentProgram)(VampPluginHandle);
cannam@50: 00310 
cannam@50: 00312     void  (*selectProgram)(VampPluginHandle, unsigned int);
cannam@50: 00313     
cannam@50: 00315     unsigned int (*getPreferredStepSize)(VampPluginHandle);
cannam@50: 00316 
cannam@50: 00318     unsigned int (*getPreferredBlockSize)(VampPluginHandle);
cannam@50: 00319 
cannam@50: 00321     unsigned int (*getMinChannelCount)(VampPluginHandle);
cannam@50: 00322 
cannam@50: 00324     unsigned int (*getMaxChannelCount)(VampPluginHandle);
cannam@50: 00325 
cannam@50: 00327     unsigned int (*getOutputCount)(VampPluginHandle);
cannam@50: 00328 
cannam@50: 00333     VampOutputDescriptor *(*getOutputDescriptor)(VampPluginHandle,
cannam@50: 00334                                                  unsigned int);
cannam@50: 00335 
cannam@50: 00337     void (*releaseOutputDescriptor)(VampOutputDescriptor *);
cannam@50: 00338 
cannam@50: 00344     VampFeatureList *(*process)(VampPluginHandle,
cannam@50: 00345                                 const float *const *inputBuffers,
cannam@50: 00346                                 int sec,
cannam@50: 00347                                 int nsec);
cannam@50: 00348 
cannam@50: 00350     VampFeatureList *(*getRemainingFeatures)(VampPluginHandle);
cannam@50: 00351 
cannam@50: 00353     void (*releaseFeatureSet)(VampFeatureList *);
cannam@50: 00354 
cannam@50: 00355 } VampPluginDescriptor;
cannam@50: 00356 
cannam@50: 00357 
cannam@50: 00376 const VampPluginDescriptor *vampGetPluginDescriptor
cannam@50: 00377     (unsigned int hostApiVersion, unsigned int index);
cannam@50: 00378 
cannam@50: 00379 
cannam@50: 00381 typedef const VampPluginDescriptor *(*VampGetPluginDescriptorFunction)
cannam@50: 00382     (unsigned int, unsigned int);
cannam@50: 00383 
cannam@50: 00384 #ifdef __cplusplus
cannam@50: 00385 }
cannam@50: 00386 #endif
cannam@50: 00387 
cannam@50: 00388 #endif
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