/[svn]/libgig/trunk/src/gig.h
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Sun May 8 16:19:34 2005 UTC (18 years, 10 months ago) by schoenebeck
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* added functions libraryName() and libraryVersion() to each of the three
  library units (RIFF,DLS,gig)
* all tools now offer a command line switch -v to show the tools revision
  and the used libgig version
* man pages are now auto generated with the correct libgig version

1 schoenebeck 2 /***************************************************************************
2     * *
3     * libgig - C++ cross-platform Gigasampler format file loader library *
4     * *
5 schoenebeck 384 * Copyright (C) 2003-2005 by Christian Schoenebeck *
6     * <cuse@users.sourceforge.net> *
7 schoenebeck 2 * *
8     * This library is free software; you can redistribute it and/or modify *
9     * it under the terms of the GNU General Public License as published by *
10     * the Free Software Foundation; either version 2 of the License, or *
11     * (at your option) any later version. *
12     * *
13     * This library is distributed in the hope that it will be useful, *
14     * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16     * GNU General Public License for more details. *
17     * *
18     * You should have received a copy of the GNU General Public License *
19     * along with this library; if not, write to the Free Software *
20     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21     * MA 02111-1307 USA *
22     ***************************************************************************/
23    
24     #ifndef __GIG_H__
25     #define __GIG_H__
26    
27     #include "DLS.h"
28    
29     #include <math.h>
30     #include <string.h>
31    
32     /// Initial size of the sample buffer which is used for decompression of
33     /// compressed sample wave streams - this value should always be bigger than
34     /// the biggest sample piece expected to be read by the sampler engine,
35     /// otherwise the buffer size will be raised at runtime and thus the buffer
36     /// reallocated which is time consuming and unefficient.
37     #define INITIAL_SAMPLE_BUFFER_SIZE 512000 // 512 kB
38    
39 schoenebeck 11 #if WORDS_BIGENDIAN
40 schoenebeck 2 # define LIST_TYPE_3PRG 0x33707267
41     # define LIST_TYPE_3EWL 0x3365776C
42     # define CHUNK_ID_SMPL 0x736D706C
43     # define CHUNK_ID_3GIX 0x33676978
44     # define CHUNK_ID_3EWA 0x33657761
45     # define CHUNK_ID_3LNK 0x336C6E6B
46     # define CHUNK_ID_3EWG 0x33657767
47     # define CHUNK_ID_EWAV 0x65776176
48     #else // little endian
49     # define LIST_TYPE_3PRG 0x67727033
50     # define LIST_TYPE_3EWL 0x6C776533
51     # define CHUNK_ID_SMPL 0x6C706D73
52     # define CHUNK_ID_3GIX 0x78696733
53     # define CHUNK_ID_3EWA 0x61776533
54     # define CHUNK_ID_3LNK 0x6B6E6C33
55     # define CHUNK_ID_3EWG 0x67776533
56     # define CHUNK_ID_EWAV 0x76617765
57     #endif // WORDS_BIGENDIAN
58    
59     /** (so far) every exponential paramater in the gig format has a basis of 1.000000008813822 */
60 schoenebeck 16 #define GIG_EXP_DECODE(x) (pow(1.000000008813822, x))
61     #define GIG_PITCH_TRACK_EXTRACT(x) (!(x & 0x01))
62     #define GIG_VCF_RESONANCE_CTRL_EXTRACT(x) ((x >> 4) & 0x03)
63     #define GIG_EG_CTR_ATTACK_INFLUENCE_EXTRACT(x) ((x >> 1) & 0x03)
64     #define GIG_EG_CTR_DECAY_INFLUENCE_EXTRACT(x) ((x >> 3) & 0x03)
65     #define GIG_EG_CTR_RELEASE_INFLUENCE_EXTRACT(x) ((x >> 5) & 0x03)
66 schoenebeck 2
67     /** Gigasampler specific classes and definitions */
68     namespace gig {
69    
70     typedef std::string String;
71    
72     /** Lower and upper limit of a range. */
73     struct range_t {
74     uint8_t low; ///< Low value of range.
75     uint8_t high; ///< High value of range.
76     };
77    
78     /** Pointer address and size of a buffer. */
79     struct buffer_t {
80     void* pStart; ///< Points to the beginning of the buffer.
81     unsigned long Size; ///< Size of the actual data in the buffer in bytes.
82     unsigned long NullExtensionSize; ///< The buffer might be bigger than the actual data, if that's the case that unused space at the end of the buffer is filled with NULLs and NullExtensionSize reflects that unused buffer space in bytes. Those NULL extensions are mandatory for differential algorithms that have to take the following data words into account, thus have to access past the buffer's boundary. If you don't know what I'm talking about, just forget this variable. :)
83 schoenebeck 384 buffer_t() {
84     pStart = NULL;
85     Size = 0;
86     NullExtensionSize = 0;
87     }
88 schoenebeck 2 };
89    
90     /** Standard types of sample loops. */
91     typedef enum {
92     loop_type_normal = 0x00000000, ///< Loop forward (normal)
93     loop_type_bidirectional = 0x00000001, ///< Alternating loop (forward/backward, also known as Ping Pong)
94     loop_type_backward = 0x00000002 ///< Loop backward (reverse)
95     } loop_type_t;
96    
97     /** Society of Motion Pictures and Television E time format. */
98     typedef enum {
99     smpte_format_no_offset = 0x00000000, ///< no SMPTE offset
100     smpte_format_24_frames = 0x00000018, ///< 24 frames per second
101     smpte_format_25_frames = 0x00000019, ///< 25 frames per second
102     smpte_format_30_frames_dropping = 0x0000001D, ///< 30 frames per second with frame dropping (30 drop)
103     smpte_format_30_frames = 0x0000001E ///< 30 frames per second
104     } smpte_format_t;
105    
106     /** Defines the shape of a function graph. */
107     typedef enum {
108     curve_type_nonlinear = 0,
109     curve_type_linear = 1,
110     curve_type_special = 2,
111     curve_type_unknown = 0xffffffff
112     } curve_type_t;
113    
114     /** Dimensions allow to bypass one of the following controllers. */
115     typedef enum {
116     dim_bypass_ctrl_none,
117     dim_bypass_ctrl_94, ///< Effect 4 Depth (MIDI Controller 94)
118     dim_bypass_ctrl_95 ///< Effect 5 Depth (MIDI Controller 95)
119     } dim_bypass_ctrl_t;
120    
121     /** Defines how LFO3 is controlled by. */
122     typedef enum {
123     lfo3_ctrl_internal = 0x00, ///< Only internally controlled.
124     lfo3_ctrl_modwheel = 0x01, ///< Only controlled by external modulation wheel.
125     lfo3_ctrl_aftertouch = 0x02, ///< Only controlled by aftertouch controller.
126     lfo3_ctrl_internal_modwheel = 0x03, ///< Controlled internally and by external modulation wheel.
127     lfo3_ctrl_internal_aftertouch = 0x04 ///< Controlled internally and by aftertouch controller.
128     } lfo3_ctrl_t;
129    
130     /** Defines how LFO2 is controlled by. */
131     typedef enum {
132     lfo2_ctrl_internal = 0x00, ///< Only internally controlled.
133     lfo2_ctrl_modwheel = 0x01, ///< Only controlled by external modulation wheel.
134     lfo2_ctrl_foot = 0x02, ///< Only controlled by external foot controller.
135     lfo2_ctrl_internal_modwheel = 0x03, ///< Controlled internally and by external modulation wheel.
136     lfo2_ctrl_internal_foot = 0x04 ///< Controlled internally and by external foot controller.
137     } lfo2_ctrl_t;
138    
139     /** Defines how LFO1 is controlled by. */
140     typedef enum {
141     lfo1_ctrl_internal = 0x00, ///< Only internally controlled.
142     lfo1_ctrl_modwheel = 0x01, ///< Only controlled by external modulation wheel.
143     lfo1_ctrl_breath = 0x02, ///< Only controlled by external breath controller.
144     lfo1_ctrl_internal_modwheel = 0x03, ///< Controlled internally and by external modulation wheel.
145     lfo1_ctrl_internal_breath = 0x04 ///< Controlled internally and by external breath controller.
146     } lfo1_ctrl_t;
147    
148     /** Defines how the filter cutoff frequency is controlled by. */
149     typedef enum {
150     vcf_cutoff_ctrl_none = 0x00,
151     vcf_cutoff_ctrl_modwheel = 0x81, ///< Modulation Wheel (MIDI Controller 1)
152     vcf_cutoff_ctrl_effect1 = 0x8c, ///< Effect Controller 1 (Coarse, MIDI Controller 12)
153     vcf_cutoff_ctrl_effect2 = 0x8d, ///< Effect Controller 2 (Coarse, MIDI Controller 13)
154     vcf_cutoff_ctrl_breath = 0x82, ///< Breath Controller (Coarse, MIDI Controller 2)
155     vcf_cutoff_ctrl_foot = 0x84, ///< Foot Pedal (Coarse, MIDI Controller 4)
156     vcf_cutoff_ctrl_sustainpedal = 0xc0, ///< Sustain Pedal (MIDI Controller 64)
157     vcf_cutoff_ctrl_softpedal = 0xc3, ///< Soft Pedal (MIDI Controller 67)
158     vcf_cutoff_ctrl_genpurpose7 = 0xd2, ///< General Purpose Controller 7 (Button, MIDI Controller 82)
159     vcf_cutoff_ctrl_genpurpose8 = 0xd3, ///< General Purpose Controller 8 (Button, MIDI Controller 83)
160     vcf_cutoff_ctrl_aftertouch = 0x80 ///< Key Pressure
161     } vcf_cutoff_ctrl_t;
162    
163     /** Defines how the filter resonance is controlled by. */
164     typedef enum {
165     vcf_res_ctrl_none = 0xffffffff,
166     vcf_res_ctrl_genpurpose3 = 0, ///< General Purpose Controller 3 (Slider, MIDI Controller 18)
167     vcf_res_ctrl_genpurpose4 = 1, ///< General Purpose Controller 4 (Slider, MIDI Controller 19)
168     vcf_res_ctrl_genpurpose5 = 2, ///< General Purpose Controller 5 (Button, MIDI Controller 80)
169     vcf_res_ctrl_genpurpose6 = 3 ///< General Purpose Controller 6 (Button, MIDI Controller 81)
170     } vcf_res_ctrl_t;
171 schoenebeck 55
172 schoenebeck 36 /**
173     * Defines a controller that has a certain contrained influence on a
174     * particular synthesis parameter (used to define attenuation controller,
175     * EG1 controller and EG2 controller).
176     *
177     * You should use the respective <i>typedef</i> (means either
178     * attenuation_ctrl_t, eg1_ctrl_t or eg2_ctrl_t) in your code!
179     */
180     struct leverage_ctrl_t {
181     typedef enum {
182     type_none = 0x00, ///< No controller defined
183     type_channelaftertouch = 0x2f, ///< Channel Key Pressure
184     type_velocity = 0xff, ///< Key Velocity
185     type_controlchange = 0xfe ///< Ordinary MIDI control change controller, see field 'controller_number'
186     } type_t;
187 schoenebeck 55
188 schoenebeck 36 type_t type; ///< Controller type
189     uint controller_number; ///< MIDI controller number if this controller is a control change controller, 0 otherwise
190     };
191 schoenebeck 55
192 schoenebeck 36 /**
193     * Defines controller influencing attenuation.
194     *
195     * @see leverage_ctrl_t
196     */
197     typedef leverage_ctrl_t attenuation_ctrl_t;
198 schoenebeck 55
199 schoenebeck 36 /**
200     * Defines controller influencing envelope generator 1.
201     *
202     * @see leverage_ctrl_t
203     */
204     typedef leverage_ctrl_t eg1_ctrl_t;
205 schoenebeck 55
206 schoenebeck 36 /**
207     * Defines controller influencing envelope generator 2.
208     *
209     * @see leverage_ctrl_t
210     */
211     typedef leverage_ctrl_t eg2_ctrl_t;
212 schoenebeck 2
213     /**
214     * Defines the type of dimension, that is how the dimension zones (and
215     * thus how the dimension regions are selected by. The number of
216     * dimension zones is always a power of two. All dimensions can have up
217     * to 32 zones (except the layer dimension with only up to 8 zones and
218     * the samplechannel dimension which currently allows only 2 zones).
219     */
220     typedef enum {
221     dimension_none = 0x00, ///< Dimension not in use.
222     dimension_samplechannel = 0x80, ///< If used sample has more than one channel (thus is not mono).
223     dimension_layer = 0x81, ///< For layering of up to 8 instruments (and eventually crossfading of 2 or 4 layers).
224     dimension_velocity = 0x82, ///< Key Velocity (this is the only dimension where the ranges can exactly be defined).
225     dimension_channelaftertouch = 0x83, ///< Channel Key Pressure
226     dimension_releasetrigger = 0x84, ///< Special dimension for triggering samples on releasing a key.
227 schoenebeck 353 dimension_keyboard = 0x85, ///< Dimension for keyswitching
228 persson 437 dimension_roundrobin = 0x86, ///< Different samples triggered each time a note is played, dimension regions selected in sequence
229     dimension_random = 0x87, ///< Different samples triggered each time a note is played, random order
230 schoenebeck 2 dimension_modwheel = 0x01, ///< Modulation Wheel (MIDI Controller 1)
231     dimension_breath = 0x02, ///< Breath Controller (Coarse, MIDI Controller 2)
232     dimension_foot = 0x04, ///< Foot Pedal (Coarse, MIDI Controller 4)
233     dimension_portamentotime = 0x05, ///< Portamento Time (Coarse, MIDI Controller 5)
234     dimension_effect1 = 0x0c, ///< Effect Controller 1 (Coarse, MIDI Controller 12)
235     dimension_effect2 = 0x0d, ///< Effect Controller 2 (Coarse, MIDI Controller 13)
236     dimension_genpurpose1 = 0x10, ///< General Purpose Controller 1 (Slider, MIDI Controller 16)
237     dimension_genpurpose2 = 0x11, ///< General Purpose Controller 2 (Slider, MIDI Controller 17)
238     dimension_genpurpose3 = 0x12, ///< General Purpose Controller 3 (Slider, MIDI Controller 18)
239     dimension_genpurpose4 = 0x13, ///< General Purpose Controller 4 (Slider, MIDI Controller 19)
240     dimension_sustainpedal = 0x40, ///< Sustain Pedal (MIDI Controller 64)
241     dimension_portamento = 0x41, ///< Portamento (MIDI Controller 65)
242     dimension_sostenutopedal = 0x42, ///< Sostenuto Pedal (MIDI Controller 66)
243     dimension_softpedal = 0x43, ///< Soft Pedal (MIDI Controller 67)
244     dimension_genpurpose5 = 0x30, ///< General Purpose Controller 5 (Button, MIDI Controller 80)
245     dimension_genpurpose6 = 0x31, ///< General Purpose Controller 6 (Button, MIDI Controller 81)
246     dimension_genpurpose7 = 0x32, ///< General Purpose Controller 7 (Button, MIDI Controller 82)
247     dimension_genpurpose8 = 0x33, ///< General Purpose Controller 8 (Button, MIDI Controller 83)
248     dimension_effect1depth = 0x5b, ///< Effect 1 Depth (MIDI Controller 91)
249     dimension_effect2depth = 0x5c, ///< Effect 2 Depth (MIDI Controller 92)
250     dimension_effect3depth = 0x5d, ///< Effect 3 Depth (MIDI Controller 93)
251     dimension_effect4depth = 0x5e, ///< Effect 4 Depth (MIDI Controller 94)
252     dimension_effect5depth = 0x5f ///< Effect 5 Depth (MIDI Controller 95)
253     } dimension_t;
254    
255     /**
256     * Intended for internal usage: will be used to convert a dimension value
257     * into the corresponding dimension bit number.
258     */
259     typedef enum {
260     split_type_normal, ///< dimension value between 0-127, no custom range of zones
261     split_type_customvelocity, ///< a velocity dimension split with custom range definition for each zone (if a velocity dimension split has no custom defined zone ranges then it's also just of type split_type_normal)
262     split_type_bit ///< dimension values are already the sought bit number
263     } split_type_t;
264    
265     /** General dimension definition. */
266     struct dimension_def_t {
267     dimension_t dimension; ///< Specifies which source (usually a MIDI controller) is associated with the dimension.
268     uint8_t bits; ///< Number of "bits" (1 bit = 2 splits/zones, 2 bit = 4 splits/zones, 3 bit = 8 splits/zones,...).
269     uint8_t zones; ///< Number of zones the dimension has.
270     split_type_t split_type; ///< Intended for internal usage: will be used to convert a dimension value into the corresponding dimension bit number.
271     range_t* ranges; ///< Intended for internal usage: Points to the beginning of a range_t array which reflects the value ranges of each dimension zone (only if custom defined ranges are defined, is NULL otherwise).
272     unsigned int zone_size; ///< Intended for internal usage: reflects the size of each zone (128/zones) for normal split types only, 0 otherwise.
273     };
274    
275     /** Defines which frequencies are filtered by the VCF. */
276     typedef enum {
277     vcf_type_lowpass = 0x00,
278     vcf_type_lowpassturbo = 0xff, ///< More poles than normal lowpass
279     vcf_type_bandpass = 0x01,
280     vcf_type_highpass = 0x02,
281     vcf_type_bandreject = 0x03
282     } vcf_type_t;
283    
284 schoenebeck 345 /**
285     * Defines the envelope of a crossfade.
286     *
287     * Note: The default value for crossfade points is 0,0,0,0. Layers with
288     * such a default value should be treated as if they would not have a
289 schoenebeck 353 * crossfade.
290 schoenebeck 345 */
291 schoenebeck 2 struct crossfade_t {
292     #if WORDS_BIGENDIAN
293 schoenebeck 345 uint8_t out_end; ///< End postition of fade out.
294     uint8_t out_start; ///< Start position of fade out.
295     uint8_t in_end; ///< End position of fade in.
296 schoenebeck 2 uint8_t in_start; ///< Start position of fade in.
297 schoenebeck 345 #else // little endian
298     uint8_t in_start; ///< Start position of fade in.
299 schoenebeck 2 uint8_t in_end; ///< End position of fade in.
300     uint8_t out_start; ///< Start position of fade out.
301     uint8_t out_end; ///< End postition of fade out.
302     #endif // WORDS_BIGENDIAN
303     };
304    
305 schoenebeck 24 /** Reflects the current playback state for a sample. */
306     struct playback_state_t {
307     unsigned long position; ///< Current position within the sample.
308     bool reverse; ///< If playback direction is currently backwards (in case there is a pingpong or reverse loop defined).
309     unsigned long loop_cycles_left; ///< How many times the loop has still to be passed, this value will be decremented with each loop cycle.
310     };
311    
312 schoenebeck 515 /**
313     * @brief Used for indicating the progress of a certain task.
314     *
315     * The function pointer argument has to be supplied with a valid
316     * function of the given signature which will then be called on
317 schoenebeck 516 * progress changes. An equivalent progress_t structure will be passed
318     * back as argument to the callback function on each progress change.
319     * The factor field of the supplied progress_t structure will then
320     * reflect the current progress as value between 0.0 and 1.0. You might
321     * want to use the custom field for data needed in your callback
322     * function.
323 schoenebeck 515 */
324     struct progress_t {
325 schoenebeck 516 void (*callback)(progress_t*); ///< Callback function pointer which has to be assigned to a function for progress notification.
326     float factor; ///< Reflects current progress as value between 0.0 and 1.0.
327     void* custom; ///< This pointer can be used for arbitrary data.
328     float __range_min; ///< Only for internal usage, do not modify!
329     float __range_max; ///< Only for internal usage, do not modify!
330 schoenebeck 515 progress_t();
331     };
332    
333 schoenebeck 2 // just symbol prototyping
334     class File;
335     class Instrument;
336     class Sample;
337 capela 310 class Region;
338 schoenebeck 2
339     /** Encapsulates articulation information of a dimension region.
340     *
341     * Every Gigasampler Instrument has at least one dimension region
342     * (exactly then when it has no dimension defined).
343     *
344     * Gigasampler provides three Envelope Generators and Low Frequency
345     * Oscillators:
346     *
347     * - EG1 and LFO1, both controlling sample amplitude
348     * - EG2 and LFO2, both controlling filter cutoff frequency
349     * - EG3 and LFO3, both controlling sample pitch
350     */
351     class DimensionRegion : protected DLS::Sampler {
352     public:
353     uint8_t VelocityUpperLimit; ///< Defines the upper velocity value limit of a velocity split (only if an user defined limit was set, thus a value not equal to 128/NumberOfSplits, else this value is 0).
354     Sample* pSample; ///< Points to the Sample which is assigned to the dimension region.
355     // Sample Amplitude EG/LFO
356     uint16_t EG1PreAttack; ///< Preattack value of the sample amplitude EG (0 - 1000 permille).
357     double EG1Attack; ///< Attack time of the sample amplitude EG (0.000 - 60.000s).
358     double EG1Decay1; ///< Decay time of the sample amplitude EG (0.000 - 60.000s).
359     double EG1Decay2; ///< Only if <i>EG1InfiniteSustain == false</i>: 2nd decay stage time of the sample amplitude EG (0.000 - 60.000s).
360     bool EG1InfiniteSustain; ///< If <i>true</i>, instead of going into Decay2 phase, Decay1 level will be hold until note will be released.
361     uint16_t EG1Sustain; ///< Sustain value of the sample amplitude EG (0 - 1000 permille).
362     double EG1Release; ///< Release time of the sample amplitude EG (0.000 - 60.000s).
363     bool EG1Hold; ///< If <i>true</i>, Decay1 stage should be postponed until the sample reached the sample loop start.
364     eg1_ctrl_t EG1Controller; ///< MIDI Controller which has influence on sample amplitude EG parameters (attack, decay, release).
365     bool EG1ControllerInvert; ///< Invert values coming from defined EG1 controller.
366 schoenebeck 36 uint8_t EG1ControllerAttackInfluence; ///< Amount EG1 Controller has influence on the EG1 Attack time (0 - 3, where 0 means off).
367     uint8_t EG1ControllerDecayInfluence; ///< Amount EG1 Controller has influence on the EG1 Decay time (0 - 3, where 0 means off).
368     uint8_t EG1ControllerReleaseInfluence; ///< Amount EG1 Controller has influence on the EG1 Release time (0 - 3, where 0 means off).
369 schoenebeck 2 double LFO1Frequency; ///< Frequency of the sample amplitude LFO (0.10 - 10.00 Hz).
370     uint16_t LFO1InternalDepth; ///< Firm pitch of the sample amplitude LFO (0 - 1200 cents).
371     uint16_t LFO1ControlDepth; ///< Controller depth influencing sample amplitude LFO pitch (0 - 1200 cents).
372     lfo1_ctrl_t LFO1Controller; ///< MIDI Controller which controls sample amplitude LFO.
373     bool LFO1FlipPhase; ///< Inverts phase of the sample amplitude LFO wave.
374     bool LFO1Sync; ///< If set to <i>true</i> only one LFO should be used for all voices.
375     // Filter Cutoff Frequency EG/LFO
376     uint16_t EG2PreAttack; ///< Preattack value of the filter cutoff EG (0 - 1000 permille).
377     double EG2Attack; ///< Attack time of the filter cutoff EG (0.000 - 60.000s).
378     double EG2Decay1; ///< Decay time of the filter cutoff EG (0.000 - 60.000s).
379     double EG2Decay2; ///< Only if <i>EG2InfiniteSustain == false</i>: 2nd stage decay time of the filter cutoff EG (0.000 - 60.000s).
380     bool EG2InfiniteSustain; ///< If <i>true</i>, instead of going into Decay2 phase, Decay1 level will be hold until note will be released.
381     uint16_t EG2Sustain; ///< Sustain value of the filter cutoff EG (0 - 1000 permille).
382     double EG2Release; ///< Release time of the filter cutoff EG (0.000 - 60.000s).
383     eg2_ctrl_t EG2Controller; ///< MIDI Controller which has influence on filter cutoff EG parameters (attack, decay, release).
384     bool EG2ControllerInvert; ///< Invert values coming from defined EG2 controller.
385 schoenebeck 36 uint8_t EG2ControllerAttackInfluence; ///< Amount EG2 Controller has influence on the EG2 Attack time (0 - 3, where 0 means off).
386     uint8_t EG2ControllerDecayInfluence; ///< Amount EG2 Controller has influence on the EG2 Decay time (0 - 3, where 0 means off).
387     uint8_t EG2ControllerReleaseInfluence; ///< Amount EG2 Controller has influence on the EG2 Release time (0 - 3, where 0 means off).
388 schoenebeck 2 double LFO2Frequency; ///< Frequency of the filter cutoff LFO (0.10 - 10.00 Hz).
389     uint16_t LFO2InternalDepth; ///< Firm pitch of the filter cutoff LFO (0 - 1200 cents).
390     uint16_t LFO2ControlDepth; ///< Controller depth influencing filter cutoff LFO pitch (0 - 1200).
391     lfo2_ctrl_t LFO2Controller; ///< MIDI Controlle which controls the filter cutoff LFO.
392     bool LFO2FlipPhase; ///< Inverts phase of the filter cutoff LFO wave.
393     bool LFO2Sync; ///< If set to <i>true</i> only one LFO should be used for all voices.
394     // Sample Pitch EG/LFO
395     double EG3Attack; ///< Attack time of the sample pitch EG (0.000 - 10.000s).
396     int16_t EG3Depth; ///< Depth of the sample pitch EG (-1200 - +1200).
397     double LFO3Frequency; ///< Frequency of the sample pitch LFO (0.10 - 10.00 Hz).
398     int16_t LFO3InternalDepth; ///< Firm depth of the sample pitch LFO (-1200 - +1200 cents).
399     int16_t LFO3ControlDepth; ///< Controller depth of the sample pitch LFO (-1200 - +1200 cents).
400     lfo3_ctrl_t LFO3Controller; ///< MIDI Controller which controls the sample pitch LFO.
401     bool LFO3Sync; ///< If set to <i>true</i> only one LFO should be used for all voices.
402     // Filter
403     bool VCFEnabled; ///< If filter should be used.
404     vcf_type_t VCFType; ///< Defines the general filter characteristic (lowpass, highpass, bandpass, etc.).
405     vcf_cutoff_ctrl_t VCFCutoffController; ///< Specifies which external controller has influence on the filter cutoff frequency.
406     uint8_t VCFCutoff; ///< Max. cutoff frequency.
407     curve_type_t VCFVelocityCurve; ///< Defines a transformation curve for the incoming velocity values, affecting the VCF.
408     uint8_t VCFVelocityScale; ///< (0-127) Amount velocity controls VCF cutoff frequency (only if no other VCF cutoff controller is defined).
409     uint8_t VCFVelocityDynamicRange; ///< 0x04 = lowest, 0x00 = highest
410     uint8_t VCFResonance; ///< Firm internal filter resonance weight.
411     bool VCFResonanceDynamic; ///< If <i>true</i>: Increases the resonance Q according to changes of controllers that actually control the VCF cutoff frequency (EG2, ext. VCF MIDI controller).
412     vcf_res_ctrl_t VCFResonanceController; ///< Specifies which external controller has influence on the filter resonance Q.
413     bool VCFKeyboardTracking; ///< If <i>true</i>: VCF cutoff frequence will be dependend to the note key position relative to the defined breakpoint value.
414     uint8_t VCFKeyboardTrackingBreakpoint; ///< See VCFKeyboardTracking (0 - 127).
415     // Key Velocity Transformations
416 schoenebeck 231 curve_type_t VelocityResponseCurve; ///< Defines a transformation curve to the incoming velocity values affecting amplitude (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead).
417     uint8_t VelocityResponseDepth; ///< Dynamic range of velocity affecting amplitude (0 - 4) (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead).
418     uint8_t VelocityResponseCurveScaling; ///< 0 - 127 (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead)
419 schoenebeck 2 curve_type_t ReleaseVelocityResponseCurve; ///< Defines a transformation curve to the incoming release veloctiy values affecting envelope times.
420     uint8_t ReleaseVelocityResponseDepth; ///< Dynamic range of release velocity affecting envelope time (0 - 4).
421     uint8_t ReleaseTriggerDecay; ///< 0 - 8
422     // Mix / Layer
423     crossfade_t Crossfade;
424     bool PitchTrack; ///< If <i>true</i>: sample will be pitched according to the key position (this will be disabled for drums for example).
425     dim_bypass_ctrl_t DimensionBypass; ///< If defined, the MIDI controller can switch on/off the dimension in realtime.
426     int8_t Pan; ///< Panorama / Balance (-64..0..63 <-> left..middle..right)
427     bool SelfMask; ///< If <i>true</i>: high velocity notes will stop low velocity notes at the same note, with that you can save voices that wouldn't be audible anyway.
428 schoenebeck 36 attenuation_ctrl_t AttenuationController; ///< MIDI Controller which has influence on the volume level of the sample (or entire sample group).
429     bool InvertAttenuationController; ///< Inverts the values coming from the defined Attenuation Controller.
430     uint8_t AttenuationControllerThreshold;///< 0-127
431 schoenebeck 2 uint8_t ChannelOffset; ///< Audio output where the audio signal of the dimension region should be routed to (0 - 9).
432     bool SustainDefeat; ///< If <i>true</i>: Sustain pedal will not hold a note.
433     bool MSDecode; ///< Gigastudio flag: defines if Mid Side Recordings should be decoded.
434     uint16_t SampleStartOffset; ///< Number of samples the sample start should be moved (0 - 2000).
435 persson 406 double SampleAttenuation; ///< Sample volume (calculated from DLS::Sampler::Gain)
436    
437 schoenebeck 2 // derived attributes from DLS::Sampler
438     DLS::Sampler::UnityNote;
439     DLS::Sampler::FineTune;
440     DLS::Sampler::Gain;
441     DLS::Sampler::SampleLoops;
442     DLS::Sampler::pSampleLoops;
443    
444 schoenebeck 16 // Methods
445     double GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
446     protected:
447 schoenebeck 2 DimensionRegion(RIFF::List* _3ewl);
448 schoenebeck 16 ~DimensionRegion();
449     friend class Region;
450     private:
451 schoenebeck 36 typedef enum { ///< Used to decode attenuation, EG1 and EG2 controller
452     _lev_ctrl_none = 0x00,
453     _lev_ctrl_modwheel = 0x03, ///< Modulation Wheel (MIDI Controller 1)
454     _lev_ctrl_breath = 0x05, ///< Breath Controller (Coarse, MIDI Controller 2)
455     _lev_ctrl_foot = 0x07, ///< Foot Pedal (Coarse, MIDI Controller 4)
456     _lev_ctrl_effect1 = 0x0d, ///< Effect Controller 1 (Coarse, MIDI Controller 12)
457     _lev_ctrl_effect2 = 0x0f, ///< Effect Controller 2 (Coarse, MIDI Controller 13)
458     _lev_ctrl_genpurpose1 = 0x11, ///< General Purpose Controller 1 (Slider, MIDI Controller 16)
459     _lev_ctrl_genpurpose2 = 0x13, ///< General Purpose Controller 2 (Slider, MIDI Controller 17)
460     _lev_ctrl_genpurpose3 = 0x15, ///< General Purpose Controller 3 (Slider, MIDI Controller 18)
461     _lev_ctrl_genpurpose4 = 0x17, ///< General Purpose Controller 4 (Slider, MIDI Controller 19)
462     _lev_ctrl_portamentotime = 0x0b, ///< Portamento Time (Coarse, MIDI Controller 5)
463     _lev_ctrl_sustainpedal = 0x01, ///< Sustain Pedal (MIDI Controller 64)
464     _lev_ctrl_portamento = 0x19, ///< Portamento (MIDI Controller 65)
465     _lev_ctrl_sostenutopedal = 0x1b, ///< Sostenuto Pedal (MIDI Controller 66)
466     _lev_ctrl_softpedal = 0x09, ///< Soft Pedal (MIDI Controller 67)
467     _lev_ctrl_genpurpose5 = 0x1d, ///< General Purpose Controller 5 (Button, MIDI Controller 80)
468     _lev_ctrl_genpurpose6 = 0x1f, ///< General Purpose Controller 6 (Button, MIDI Controller 81)
469     _lev_ctrl_genpurpose7 = 0x21, ///< General Purpose Controller 7 (Button, MIDI Controller 82)
470     _lev_ctrl_genpurpose8 = 0x23, ///< General Purpose Controller 8 (Button, MIDI Controller 83)
471     _lev_ctrl_effect1depth = 0x25, ///< Effect 1 Depth (MIDI Controller 91)
472     _lev_ctrl_effect2depth = 0x27, ///< Effect 2 Depth (MIDI Controller 92)
473     _lev_ctrl_effect3depth = 0x29, ///< Effect 3 Depth (MIDI Controller 93)
474     _lev_ctrl_effect4depth = 0x2b, ///< Effect 4 Depth (MIDI Controller 94)
475     _lev_ctrl_effect5depth = 0x2d, ///< Effect 5 Depth (MIDI Controller 95)
476     _lev_ctrl_channelaftertouch = 0x2f, ///< Channel Key Pressure
477     _lev_ctrl_velocity = 0xff ///< Key Velocity
478 schoenebeck 55 } _lev_ctrl_t;
479 schoenebeck 16 typedef std::map<uint32_t, double*> VelocityTableMap;
480    
481     static uint Instances; ///< Number of DimensionRegion instances.
482     static VelocityTableMap* pVelocityTables; ///< Contains the tables corresponding to the various velocity parameters (VelocityResponseCurve and VelocityResponseDepth).
483     double* pVelocityAttenuationTable; ///< Points to the velocity table corresponding to the velocity parameters of this DimensionRegion.
484 schoenebeck 55
485 schoenebeck 36 leverage_ctrl_t DecodeLeverageController(_lev_ctrl_t EncodedController);
486 schoenebeck 308 double* CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling);
487 schoenebeck 2 };
488    
489     /** Encapsulates sample waves used for playback. */
490     class Sample : public DLS::Sample {
491     public:
492     uint16_t SampleGroup;
493     uint32_t Manufacturer; ///< Specifies the MIDI Manufacturer's Association (MMA) Manufacturer code for the sampler intended to receive this file's waveform. If no particular manufacturer is to be specified, a value of 0 should be used.
494     uint32_t Product; ///< Specifies the MIDI model ID defined by the manufacturer corresponding to the Manufacturer field. If no particular manufacturer's product is to be specified, a value of 0 should be used.
495     uint32_t SamplePeriod; ///< Specifies the duration of time that passes during the playback of one sample in nanoseconds (normally equal to 1 / Samplers Per Second, where Samples Per Second is the value found in the format chunk).
496     uint32_t MIDIUnityNote; ///< Specifies the musical note at which the sample will be played at it's original sample rate.
497 schoenebeck 21 uint32_t FineTune; ///< Specifies the fraction of a semitone up from the specified MIDI unity note field. A value of 0x80000000 means 1/2 semitone (50 cents) and a value of 0x00000000 means no fine tuning between semitones.
498 schoenebeck 2 smpte_format_t SMPTEFormat; ///< Specifies the Society of Motion Pictures and Television E time format used in the following <i>SMPTEOffset</i> field. If a value of 0 is set, <i>SMPTEOffset</i> should also be set to 0.
499     uint32_t SMPTEOffset; ///< The SMPTE Offset value specifies the time offset to be used for the synchronization / calibration to the first sample in the waveform. This value uses a format of 0xhhmmssff where hh is a signed value that specifies the number of hours (-23 to 23), mm is an unsigned value that specifies the number of minutes (0 to 59), ss is an unsigned value that specifies the number of seconds (0 to 59) and ff is an unsigned value that specifies the number of frames (0 to -1).
500     uint32_t Loops; ///< Number of defined sample loops (so far only seen single loops in gig files - please report me if you encounter more!).
501 schoenebeck 21 uint32_t LoopID; ///< Specifies the unique ID that corresponds to one of the defined cue points in the cue point list (only if Loops > 0), as the Gigasampler format only allows one loop definition at the moment, this attribute isn't really useful for anything.
502 schoenebeck 2 loop_type_t LoopType; ///< The type field defines how the waveform samples will be looped (only if Loops > 0).
503 schoenebeck 21 uint32_t LoopStart; ///< The start value specifies the offset (in sample points) in the waveform data of the first sample to be played in the loop (only if Loops > 0).
504     uint32_t LoopEnd; ///< The end value specifies the offset (in sample points) in the waveform data which represents the end of the loop (only if Loops > 0).
505     uint32_t LoopSize; ///< Length of the looping area (in sample points) which is equivalent to <i>LoopEnd - LoopStart</i>.
506 schoenebeck 2 uint32_t LoopFraction; ///< The fractional value specifies a fraction of a sample at which to loop (only if Loops > 0). This allows a loop to be fine tuned at a resolution greater than one sample. A value of 0 means no fraction, a value of 0x80000000 means 1/2 of a sample length. 0xFFFFFFFF is the smallest fraction of a sample that can be represented.
507     uint32_t LoopPlayCount; ///< Number of times the loop should be played (only if Loops > 0, a value of 0 = infinite).
508     bool Compressed; ///< If the sample wave is compressed (probably just interesting for instrument and sample editors, as this library already handles the decompression in it's sample access methods anyway).
509 persson 437 uint32_t TruncatedBits; ///< For 24-bit compressed samples only: number of bits truncated during compression (0, 4 or 6)
510     bool Dithered; ///< For 24-bit compressed samples only: if dithering was used during compression with bit reduction
511 schoenebeck 2
512     // own methods
513     buffer_t LoadSampleData();
514     buffer_t LoadSampleData(unsigned long SampleCount);
515     buffer_t LoadSampleDataWithNullSamplesExtension(uint NullSamplesCount);
516     buffer_t LoadSampleDataWithNullSamplesExtension(unsigned long SampleCount, uint NullSamplesCount);
517     buffer_t GetCache();
518 schoenebeck 384 // own static methods
519     static buffer_t CreateDecompressionBuffer(unsigned long MaxReadSize);
520     static void DestroyDecompressionBuffer(buffer_t& DecompressionBuffer);
521 schoenebeck 2 // overridden methods
522     void ReleaseSampleData();
523     unsigned long SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence = RIFF::stream_start);
524     unsigned long GetPos();
525 schoenebeck 384 unsigned long Read(void* pBuffer, unsigned long SampleCount, buffer_t* pExternalDecompressionBuffer = NULL);
526     unsigned long ReadAndLoop(void* pBuffer, unsigned long SampleCount, playback_state_t* pPlaybackState, buffer_t* pExternalDecompressionBuffer = NULL);
527 schoenebeck 2 protected:
528     static unsigned int Instances; ///< Number of instances of class Sample.
529 schoenebeck 384 static buffer_t InternalDecompressionBuffer; ///< Buffer used for decompression as well as for truncation of 24 Bit -> 16 Bit samples.
530 schoenebeck 2 unsigned long FrameOffset; ///< Current offset (sample points) in current sample frame (for decompression only).
531     unsigned long* FrameTable; ///< For positioning within compressed samples only: stores the offset values for each frame.
532     unsigned long SamplePos; ///< For compressed samples only: stores the current position (in sample points).
533 persson 365 unsigned long SamplesInLastFrame; ///< For compressed samples only: length of the last sample frame.
534     unsigned long WorstCaseFrameSize; ///< For compressed samples only: size (in bytes) of the largest possible sample frame.
535     unsigned long SamplesPerFrame; ///< For compressed samples only: number of samples in a full sample frame.
536 schoenebeck 2 buffer_t RAMCache; ///< Buffers samples (already uncompressed) in RAM.
537    
538     Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset);
539     ~Sample();
540 schoenebeck 24 /**
541     * Swaps the order of the data words in the given memory area
542     * with a granularity given by \a WordSize.
543     *
544     * @param pData - pointer to the memory area to be swapped
545     * @param AreaSize - size of the memory area to be swapped (in bytes)
546     * @param WordSize - size of the data words (in bytes)
547     */
548     inline void SwapMemoryArea(void* pData, unsigned long AreaSize, uint WordSize) {
549     switch (WordSize) { // TODO: unefficient
550     case 1: {
551     uint8_t* pDst = (uint8_t*) pData;
552     uint8_t cache;
553     unsigned long lo = 0, hi = AreaSize - 1;
554     for (; lo < hi; hi--, lo++) {
555     cache = pDst[lo];
556     pDst[lo] = pDst[hi];
557     pDst[hi] = cache;
558     }
559     break;
560     }
561     case 2: {
562     uint16_t* pDst = (uint16_t*) pData;
563     uint16_t cache;
564     unsigned long lo = 0, hi = (AreaSize >> 1) - 1;
565     for (; lo < hi; hi--, lo++) {
566     cache = pDst[lo];
567     pDst[lo] = pDst[hi];
568     pDst[hi] = cache;
569     }
570     break;
571     }
572     case 4: {
573     uint32_t* pDst = (uint32_t*) pData;
574     uint32_t cache;
575     unsigned long lo = 0, hi = (AreaSize >> 2) - 1;
576     for (; lo < hi; hi--, lo++) {
577     cache = pDst[lo];
578     pDst[lo] = pDst[hi];
579     pDst[hi] = cache;
580     }
581     break;
582     }
583     default: {
584     uint8_t* pCache = new uint8_t[WordSize]; // TODO: unefficient
585     unsigned long lo = 0, hi = AreaSize - WordSize;
586     for (; lo < hi; hi -= WordSize, lo += WordSize) {
587     memcpy(pCache, (uint8_t*) pData + lo, WordSize);
588     memcpy((uint8_t*) pData + lo, (uint8_t*) pData + hi, WordSize);
589     memcpy((uint8_t*) pData + hi, pCache, WordSize);
590     }
591     delete[] pCache;
592     break;
593     }
594     }
595     }
596     inline long Min(long A, long B) {
597     return (A > B) ? B : A;
598     }
599     inline long Abs(long val) { return (val > 0) ? val : -val; }
600 persson 365
601     // Guess size (in bytes) of a compressed sample
602     inline unsigned long GuessSize(unsigned long samples) {
603     // 16 bit: assume all frames are compressed - 1 byte
604     // per sample and 5 bytes header per 2048 samples
605    
606     // 24 bit: assume next best compression rate - 1.5
607     // bytes per sample and 13 bytes header per 256
608     // samples
609     const unsigned long size =
610     BitDepth == 24 ? samples + (samples >> 1) + (samples >> 8) * 13
611     : samples + (samples >> 10) * 5;
612     // Double for stereo and add one worst case sample
613     // frame
614     return (Channels == 2 ? size << 1 : size) + WorstCaseFrameSize;
615     }
616 schoenebeck 384
617     // Worst case amount of sample points that can be read with the
618     // given decompression buffer.
619     inline unsigned long WorstCaseMaxSamples(buffer_t* pDecompressionBuffer) {
620     return (unsigned long) ((float)pDecompressionBuffer->Size / (float)WorstCaseFrameSize * (float)SamplesPerFrame);
621     }
622 schoenebeck 2 private:
623     void ScanCompressedSample();
624     friend class File;
625     friend class Region;
626     };
627    
628     // TODO: <3dnl> list not used yet - not important though (just contains optional descriptions for the dimensions)
629     /** Defines <i>Region</i> information of an <i>Instrument</i>. */
630     class Region : public DLS::Region {
631     public:
632     unsigned int Dimensions; ///< Number of defined dimensions.
633 schoenebeck 347 dimension_def_t pDimensionDefinitions[8]; ///< Defines the five (gig2) or eight (gig3) possible dimensions (the dimension's controller and number of bits/splits).
634 schoenebeck 2 uint32_t DimensionRegions; ///< Total number of DimensionRegions this Region contains.
635 schoenebeck 347 DimensionRegion* pDimensionRegions[256]; ///< Pointer array to the 32 (gig2) or 256 (gig3) possible dimension regions (reflects NULL for dimension regions not in use). Avoid to access the array directly and better use GetDimensionRegionByValue() instead, but of course in some cases it makes sense to use the array (e.g. iterating through all DimensionRegions).
636 schoenebeck 282 unsigned int Layers; ///< Amount of defined layers (1 - 32). A value of 1 actually means no layering, a value > 1 means there is Layer dimension. The same information can of course also be obtained by accessing pDimensionDefinitions.
637 schoenebeck 2
638 schoenebeck 347 DimensionRegion* GetDimensionRegionByValue(const uint DimValues[8]);
639     DimensionRegion* GetDimensionRegionByBit(const uint8_t DimBits[8]);
640 schoenebeck 2 Sample* GetSample();
641     protected:
642     uint8_t VelocityTable[128]; ///< For velocity dimensions with custom defined zone ranges only: used for fast converting from velocity MIDI value to dimension bit number.
643    
644     Region(Instrument* pInstrument, RIFF::List* rgnList);
645     void LoadDimensionRegions(RIFF::List* rgn);
646 schoenebeck 515 Sample* GetSampleFromWavePool(unsigned int WavePoolTableIndex, progress_t* pProgress = NULL);
647 schoenebeck 2 ~Region();
648     friend class Instrument;
649     };
650    
651     /** Provides all neccessary information for the synthesis of an <i>Instrument</i>. */
652     class Instrument : protected DLS::Instrument {
653     public:
654     // derived attributes from DLS::Resource
655     DLS::Resource::pInfo;
656     DLS::Resource::pDLSID;
657     // derived attributes from DLS::Instrument
658     DLS::Instrument::IsDrum;
659     DLS::Instrument::MIDIBank;
660     DLS::Instrument::MIDIBankCoarse;
661     DLS::Instrument::MIDIBankFine;
662     DLS::Instrument::MIDIProgram;
663     DLS::Instrument::Regions;
664     // own attributes
665     int32_t Attenuation; ///< in dB
666     uint16_t EffectSend;
667     int16_t FineTune; ///< in cents
668     uint16_t PitchbendRange; ///< Number of semitones pitchbend controller can pitch (default is 2).
669     bool PianoReleaseMode;
670     range_t DimensionKeyRange; ///< 0-127 (where 0 means C1 and 127 means G9)
671    
672    
673     // derived methods from DLS::Resource
674     DLS::Resource::GetParent;
675     // overridden methods
676     Region* GetFirstRegion();
677     Region* GetNextRegion();
678     // own methods
679     Region* GetRegion(unsigned int Key);
680     protected:
681     Region** pRegions; ///< Pointer array to the regions
682     Region* RegionKeyTable[128]; ///< fast lookup for the corresponding Region of a MIDI key
683     int RegionIndex;
684    
685 schoenebeck 515 Instrument(File* pFile, RIFF::List* insList, progress_t* pProgress = NULL);
686 schoenebeck 2 ~Instrument();
687     friend class File;
688     };
689    
690     // TODO: <3gnm> chunk not added yet (just contains the names of the sample groups)
691     /** Parses Gigasampler files and provides abstract access to the data. */
692     class File : protected DLS::File {
693     public:
694     // derived attributes from DLS::Resource
695     DLS::Resource::pInfo;
696     DLS::Resource::pDLSID;
697     // derived attributes from DLS::File
698     DLS::File::pVersion;
699     DLS::File::Instruments;
700    
701     // derived methods from DLS::Resource
702     DLS::Resource::GetParent;
703     // overridden methods
704     File(RIFF::File* pRIFF);
705 schoenebeck 515 Sample* GetFirstSample(progress_t* pProgress = NULL); ///< Returns a pointer to the first <i>Sample</i> object of the file, <i>NULL</i> otherwise.
706 schoenebeck 2 Sample* GetNextSample(); ///< Returns a pointer to the next <i>Sample</i> object of the file, <i>NULL</i> otherwise.
707     Instrument* GetFirstInstrument(); ///< Returns a pointer to the first <i>Instrument</i> object of the file, <i>NULL</i> otherwise.
708     Instrument* GetNextInstrument(); ///< Returns a pointer to the next <i>Instrument</i> object of the file, <i>NULL</i> otherwise.
709 schoenebeck 515 Instrument* GetInstrument(uint index, progress_t* pProgress = NULL);
710 schoenebeck 350 ~File();
711 schoenebeck 2 protected:
712     typedef std::list<Sample*> SampleList;
713     typedef std::list<Instrument*> InstrumentList;
714    
715     SampleList* pSamples;
716     SampleList::iterator SamplesIterator;
717     InstrumentList* pInstruments;
718     InstrumentList::iterator InstrumentsIterator;
719    
720 schoenebeck 515 void LoadSamples(progress_t* pProgress = NULL);
721     void LoadInstruments(progress_t* pProgress = NULL);
722 schoenebeck 2 friend class Region;
723     };
724    
725     /** Will be thrown whenever a gig specific error occurs while trying to access a Gigasampler File. */
726     class Exception : public DLS::Exception {
727     public:
728     Exception(String Message);
729     void PrintMessage();
730     };
731    
732 schoenebeck 518 String libraryName();
733     String libraryVersion();
734    
735 schoenebeck 2 } // namespace gig
736    
737     #endif // __GIG_H__

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