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-rw-r--r--libs/fluidsynth/src/fluid_mod.c845
1 files changed, 516 insertions, 329 deletions
diff --git a/libs/fluidsynth/src/fluid_mod.c b/libs/fluidsynth/src/fluid_mod.c
index 5931aa52a6..9a48ed45d8 100644
--- a/libs/fluidsynth/src/fluid_mod.c
+++ b/libs/fluidsynth/src/fluid_mod.c
@@ -3,16 +3,16 @@
* Copyright (C) 2003 Peter Hanappe and others.
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public License
- * as published by the Free Software Foundation; either version 2 of
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library 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
- * Library General Public License for more details.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library General Public
+ * You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
@@ -22,389 +22,446 @@
#include "fluid_chan.h"
#include "fluid_voice.h"
-/*
- * fluid_mod_clone
+/**
+ * Clone the modulators destination, sources, flags and amount.
+ * @param mod the modulator to store the copy to
+ * @param src the source modulator to retrieve the information from
+ * @note The \c next member of \c mod will be left unchanged.
*/
void
-fluid_mod_clone(fluid_mod_t* mod, fluid_mod_t* src)
+fluid_mod_clone(fluid_mod_t *mod, const fluid_mod_t *src)
{
- mod->dest = src->dest;
- mod->src1 = src->src1;
- mod->flags1 = src->flags1;
- mod->src2 = src->src2;
- mod->flags2 = src->flags2;
- mod->amount = src->amount;
+ mod->dest = src->dest;
+ mod->src1 = src->src1;
+ mod->flags1 = src->flags1;
+ mod->src2 = src->src2;
+ mod->flags2 = src->flags2;
+ mod->amount = src->amount;
}
/**
* Set a modulator's primary source controller and flags.
- * @param mod Modulator
+ * @param mod The modulator instance
* @param src Modulator source (#fluid_mod_src or a MIDI controller number)
* @param flags Flags determining mapping function and whether the source
* controller is a general controller (#FLUID_MOD_GC) or a MIDI CC controller
* (#FLUID_MOD_CC), see #fluid_mod_flags.
*/
void
-fluid_mod_set_source1(fluid_mod_t* mod, int src, int flags)
+fluid_mod_set_source1(fluid_mod_t *mod, int src, int flags)
{
- mod->src1 = src;
- mod->flags1 = flags;
+ mod->src1 = src;
+ mod->flags1 = flags;
}
/**
* Set a modulator's secondary source controller and flags.
- * @param mod Modulator
+ * @param mod The modulator instance
* @param src Modulator source (#fluid_mod_src or a MIDI controller number)
* @param flags Flags determining mapping function and whether the source
* controller is a general controller (#FLUID_MOD_GC) or a MIDI CC controller
* (#FLUID_MOD_CC), see #fluid_mod_flags.
*/
void
-fluid_mod_set_source2(fluid_mod_t* mod, int src, int flags)
+fluid_mod_set_source2(fluid_mod_t *mod, int src, int flags)
{
- mod->src2 = src;
- mod->flags2 = flags;
+ mod->src2 = src;
+ mod->flags2 = flags;
}
/**
* Set the destination effect of a modulator.
- * @param mod Modulator
+ * @param mod The modulator instance
* @param dest Destination generator (#fluid_gen_type)
*/
void
-fluid_mod_set_dest(fluid_mod_t* mod, int dest)
+fluid_mod_set_dest(fluid_mod_t *mod, int dest)
{
- mod->dest = dest;
+ mod->dest = dest;
}
/**
* Set the scale amount of a modulator.
- * @param mod Modulator
+ * @param mod The modulator instance
* @param amount Scale amount to assign
*/
void
-fluid_mod_set_amount(fluid_mod_t* mod, double amount)
+fluid_mod_set_amount(fluid_mod_t *mod, double amount)
{
- mod->amount = (double) amount;
+ mod->amount = (double) amount;
}
/**
* Get the primary source value from a modulator.
- * @param mod Modulator
+ * @param mod The modulator instance
* @return The primary source value (#fluid_mod_src or a MIDI CC controller value).
*/
int
-fluid_mod_get_source1(fluid_mod_t* mod)
+fluid_mod_get_source1(const fluid_mod_t *mod)
{
- return mod->src1;
+ return mod->src1;
}
/**
* Get primary source flags from a modulator.
- * @param mod Modulator
+ * @param mod The modulator instance
* @return The primary source flags (#fluid_mod_flags).
*/
int
-fluid_mod_get_flags1(fluid_mod_t* mod)
+fluid_mod_get_flags1(const fluid_mod_t *mod)
{
- return mod->flags1;
+ return mod->flags1;
}
/**
* Get the secondary source value from a modulator.
- * @param mod Modulator
+ * @param mod The modulator instance
* @return The secondary source value (#fluid_mod_src or a MIDI CC controller value).
*/
int
-fluid_mod_get_source2(fluid_mod_t* mod)
+fluid_mod_get_source2(const fluid_mod_t *mod)
{
- return mod->src2;
+ return mod->src2;
}
/**
* Get secondary source flags from a modulator.
- * @param mod Modulator
+ * @param mod The modulator instance
* @return The secondary source flags (#fluid_mod_flags).
*/
int
-fluid_mod_get_flags2(fluid_mod_t* mod)
+fluid_mod_get_flags2(const fluid_mod_t *mod)
{
- return mod->flags2;
+ return mod->flags2;
}
/**
* Get destination effect from a modulator.
- * @param mod Modulator
+ * @param mod The modulator instance
* @return Destination generator (#fluid_gen_type)
*/
int
-fluid_mod_get_dest(fluid_mod_t* mod)
+fluid_mod_get_dest(const fluid_mod_t *mod)
{
- return mod->dest;
+ return mod->dest;
}
/**
* Get the scale amount from a modulator.
- * @param mod Modulator
+ * @param mod The modulator instance
* @return Scale amount
*/
double
-fluid_mod_get_amount(fluid_mod_t* mod)
+fluid_mod_get_amount(const fluid_mod_t *mod)
+{
+ return (double) mod->amount;
+}
+
+/*
+ * retrieves the initial value from the given source of the modulator
+ */
+static fluid_real_t
+fluid_mod_get_source_value(const unsigned char mod_src,
+ const unsigned char mod_flags,
+ fluid_real_t *range,
+ const fluid_voice_t *voice
+ )
{
- return (fluid_real_t) mod->amount;
+ const fluid_channel_t *chan = voice->channel;
+ fluid_real_t val;
+
+ if(mod_flags & FLUID_MOD_CC)
+ {
+ /* From MIDI Recommended Practice (RP-036) Default Pan Formula:
+ * "Since MIDI controller values range from 0 to 127, the exact center
+ * of the range, 63.5, cannot be represented. Therefore, the effective
+ * range for CC#10 is modified to be 1 to 127, and values 0 and 1 both
+ * pan hard left. The recommended method is to subtract 1 from the
+ * value of CC#10, and saturate the result to be non-negative."
+ *
+ * We treat the balance control in exactly the same way, as the same
+ * problem applies here as well.
+ */
+ if(mod_src == PAN_MSB || mod_src == BALANCE_MSB)
+ {
+ *range = 126;
+ val = fluid_channel_get_cc(chan, mod_src) - 1;
+
+ if(val < 0)
+ {
+ val = 0;
+ }
+ }
+ else
+ {
+ val = fluid_channel_get_cc(chan, mod_src);
+ }
+ }
+ else
+ {
+ switch(mod_src)
+ {
+ case FLUID_MOD_NONE: /* SF 2.01 8.2.1 item 0: src enum=0 => value is 1 */
+ val = *range;
+ break;
+
+ case FLUID_MOD_VELOCITY:
+ val = fluid_voice_get_actual_velocity(voice);
+ break;
+
+ case FLUID_MOD_KEY:
+ val = fluid_voice_get_actual_key(voice);
+ break;
+
+ case FLUID_MOD_KEYPRESSURE:
+ val = fluid_channel_get_key_pressure(chan, voice->key);
+ break;
+
+ case FLUID_MOD_CHANNELPRESSURE:
+ val = fluid_channel_get_channel_pressure(chan);
+ break;
+
+ case FLUID_MOD_PITCHWHEEL:
+ val = fluid_channel_get_pitch_bend(chan);
+ *range = 0x4000;
+ break;
+
+ case FLUID_MOD_PITCHWHEELSENS:
+ val = fluid_channel_get_pitch_wheel_sensitivity(chan);
+ break;
+
+ default:
+ FLUID_LOG(FLUID_ERR, "Unknown modulator source '%d', disabling modulator.", mod_src);
+ val = 0.0;
+ }
+ }
+
+ return val;
}
+/**
+ * transforms the initial value retrieved by \c fluid_mod_get_source_value into [0.0;1.0]
+ */
+static fluid_real_t
+fluid_mod_transform_source_value(fluid_real_t val, unsigned char mod_flags, const fluid_real_t range)
+{
+ /* normalized value, i.e. usually in the range [0;1]
+ *
+ * if val was retrieved from pitch_bend then [-0.5;0.5]
+ */
+ const fluid_real_t val_norm = val / range;
+
+ /* we could also only switch case the lower nibble of mod_flags, however
+ * this would keep us from adding further mod types in the future
+ *
+ * instead just remove the flag(s) we already took care of
+ */
+ mod_flags &= ~FLUID_MOD_CC;
+
+ switch(mod_flags/* & 0x0f*/)
+ {
+ case FLUID_MOD_LINEAR | FLUID_MOD_UNIPOLAR | FLUID_MOD_POSITIVE: /* =0 */
+ val = val_norm;
+ break;
+
+ case FLUID_MOD_LINEAR | FLUID_MOD_UNIPOLAR | FLUID_MOD_NEGATIVE: /* =1 */
+ val = 1.0f - val_norm;
+ break;
+
+ case FLUID_MOD_LINEAR | FLUID_MOD_BIPOLAR | FLUID_MOD_POSITIVE: /* =2 */
+ val = -1.0f + 2.0f * val_norm;
+ break;
+
+ case FLUID_MOD_LINEAR | FLUID_MOD_BIPOLAR | FLUID_MOD_NEGATIVE: /* =3 */
+ val = 1.0f - 2.0f * val_norm;
+ break;
+
+ case FLUID_MOD_CONCAVE | FLUID_MOD_UNIPOLAR | FLUID_MOD_POSITIVE: /* =4 */
+ val = fluid_concave(127 * (val_norm));
+ break;
+
+ case FLUID_MOD_CONCAVE | FLUID_MOD_UNIPOLAR | FLUID_MOD_NEGATIVE: /* =5 */
+ val = fluid_concave(127 * (1.0f - val_norm));
+ break;
+
+ case FLUID_MOD_CONCAVE | FLUID_MOD_BIPOLAR | FLUID_MOD_POSITIVE: /* =6 */
+ val = (val_norm > 0.5f) ? fluid_concave(127 * 2 * (val_norm - 0.5f))
+ : -fluid_concave(127 * 2 * (0.5f - val_norm));
+ break;
+
+ case FLUID_MOD_CONCAVE | FLUID_MOD_BIPOLAR | FLUID_MOD_NEGATIVE: /* =7 */
+ val = (val_norm > 0.5f) ? -fluid_concave(127 * 2 * (val_norm - 0.5f))
+ : fluid_concave(127 * 2 * (0.5f - val_norm));
+ break;
+
+ case FLUID_MOD_CONVEX | FLUID_MOD_UNIPOLAR | FLUID_MOD_POSITIVE: /* =8 */
+ val = fluid_convex(127 * (val_norm));
+ break;
+
+ case FLUID_MOD_CONVEX | FLUID_MOD_UNIPOLAR | FLUID_MOD_NEGATIVE: /* =9 */
+ val = fluid_convex(127 * (1.0f - val_norm));
+ break;
+
+ case FLUID_MOD_CONVEX | FLUID_MOD_BIPOLAR | FLUID_MOD_POSITIVE: /* =10 */
+ val = (val_norm > 0.5f) ? fluid_convex(127 * 2 * (val_norm - 0.5f))
+ : -fluid_convex(127 * 2 * (0.5f - val_norm));
+ break;
+
+ case FLUID_MOD_CONVEX | FLUID_MOD_BIPOLAR | FLUID_MOD_NEGATIVE: /* =11 */
+ val = (val_norm > 0.5f) ? -fluid_convex(127 * 2 * (val_norm - 0.5f))
+ : fluid_convex(127 * 2 * (0.5f - val_norm));
+ break;
+
+ case FLUID_MOD_SWITCH | FLUID_MOD_UNIPOLAR | FLUID_MOD_POSITIVE: /* =12 */
+ val = (val_norm >= 0.5f) ? 1.0f : 0.0f;
+ break;
+
+ case FLUID_MOD_SWITCH | FLUID_MOD_UNIPOLAR | FLUID_MOD_NEGATIVE: /* =13 */
+ val = (val_norm >= 0.5f) ? 0.0f : 1.0f;
+ break;
+
+ case FLUID_MOD_SWITCH | FLUID_MOD_BIPOLAR | FLUID_MOD_POSITIVE: /* =14 */
+ val = (val_norm >= 0.5f) ? 1.0f : -1.0f;
+ break;
+
+ case FLUID_MOD_SWITCH | FLUID_MOD_BIPOLAR | FLUID_MOD_NEGATIVE: /* =15 */
+ val = (val_norm >= 0.5f) ? -1.0f : 1.0f;
+ break;
+
+ /*
+ * MIDI CCs only have a resolution of 7 bits. The closer val_norm gets to 1,
+ * the less will be the resulting change of the sinus. When using this sin()
+ * for scaling the cutoff frequency, there will be no audible difference between
+ * MIDI CCs 118 to 127. To avoid this waste of CCs multiply with 0.87
+ * (at least for unipolar) which makes sin() never get to 1.0 but to 0.98 which
+ * is close enough.
+ */
+ case FLUID_MOD_SIN | FLUID_MOD_UNIPOLAR | FLUID_MOD_POSITIVE: /* custom sin(x) */
+ val = sin(M_PI / 2 * val_norm * 0.87);
+ break;
+
+ case FLUID_MOD_SIN | FLUID_MOD_UNIPOLAR | FLUID_MOD_NEGATIVE: /* custom */
+ val = sin(M_PI / 2 * (1.0f - val_norm) * 0.87);
+ break;
+
+ case FLUID_MOD_SIN | FLUID_MOD_BIPOLAR | FLUID_MOD_POSITIVE: /* custom */
+ val = (val_norm > 0.5f) ? sin(M_PI / 2 * 2 * (val_norm - 0.5f))
+ : -sin(M_PI / 2 * 2 * (0.5f - val_norm));
+ break;
+
+ case FLUID_MOD_SIN | FLUID_MOD_BIPOLAR | FLUID_MOD_NEGATIVE: /* custom */
+ val = (val_norm > 0.5f) ? -sin(M_PI / 2 * 2 * (val_norm - 0.5f))
+ : sin(M_PI / 2 * 2 * (0.5f - val_norm));
+ break;
+
+ default:
+ FLUID_LOG(FLUID_ERR, "Unknown modulator type '%d', disabling modulator.", mod_flags);
+ val = 0.0f;
+ break;
+ }
+
+ return val;
+}
/*
* fluid_mod_get_value
*/
fluid_real_t
-fluid_mod_get_value(fluid_mod_t* mod, fluid_channel_t* chan, fluid_voice_t* voice)
+fluid_mod_get_value(fluid_mod_t *mod, fluid_voice_t *voice)
{
- fluid_real_t v1 = 0.0, v2 = 1.0;
- fluid_real_t range1 = 127.0, range2 = 127.0;
-
- if (chan == NULL) {
- return 0.0f;
- }
-
- /* 'special treatment' for default controller
- *
- * Reference: SF2.01 section 8.4.2
- *
- * The GM default controller 'vel-to-filter cut off' is not clearly
- * defined: If implemented according to the specs, the filter
- * frequency jumps between vel=63 and vel=64. To maintain
- * compatibility with existing sound fonts, the implementation is
- * 'hardcoded', it is impossible to implement using only one
- * modulator otherwise.
- *
- * I assume here, that the 'intention' of the paragraph is one
- * octave (1200 cents) filter frequency shift between vel=127 and
- * vel=64. 'amount' is (-2400), at least as long as the controller
- * is set to default.
- *
- * Further, the 'appearance' of the modulator (source enumerator,
- * destination enumerator, flags etc) is different from that
- * described in section 8.4.2, but it matches the definition used in
- * several SF2.1 sound fonts (where it is used only to turn it off).
- * */
- if ((mod->src2 == FLUID_MOD_VELOCITY) &&
- (mod->src1 == FLUID_MOD_VELOCITY) &&
- (mod->flags1 == (FLUID_MOD_GC | FLUID_MOD_UNIPOLAR
- | FLUID_MOD_NEGATIVE | FLUID_MOD_LINEAR)) &&
- (mod->flags2 == (FLUID_MOD_GC | FLUID_MOD_UNIPOLAR
- | FLUID_MOD_POSITIVE | FLUID_MOD_SWITCH)) &&
- (mod->dest == GEN_FILTERFC)) {
+ extern fluid_mod_t default_vel2filter_mod;
+
+ fluid_real_t v1 = 0.0, v2 = 1.0;
+ fluid_real_t range1 = 127.0, range2 = 127.0;
+
+ /* 'special treatment' for default controller
+ *
+ * Reference: SF2.01 section 8.4.2
+ *
+ * The GM default controller 'vel-to-filter cut off' is not clearly
+ * defined: If implemented according to the specs, the filter
+ * frequency jumps between vel=63 and vel=64. To maintain
+ * compatibility with existing sound fonts, the implementation is
+ * 'hardcoded', it is impossible to implement using only one
+ * modulator otherwise.
+ *
+ * I assume here, that the 'intention' of the paragraph is one
+ * octave (1200 cents) filter frequency shift between vel=127 and
+ * vel=64. 'amount' is (-2400), at least as long as the controller
+ * is set to default.
+ *
+ * Further, the 'appearance' of the modulator (source enumerator,
+ * destination enumerator, flags etc) is different from that
+ * described in section 8.4.2, but it matches the definition used in
+ * several SF2.1 sound fonts (where it is used only to turn it off).
+ * */
+ if(fluid_mod_test_identity(mod, &default_vel2filter_mod))
+ {
// S. Christian Collins' mod, to stop forcing velocity based filtering
-/*
- if (voice->vel < 64){
- return (fluid_real_t) mod->amount / 2.0;
- } else {
- return (fluid_real_t) mod->amount * (127 - voice->vel) / 127;
+ /*
+ if (voice->vel < 64){
+ return (fluid_real_t) mod->amount / 2.0;
+ } else {
+ return (fluid_real_t) mod->amount * (127 - voice->vel) / 127;
+ }
+ */
+ return 0; // (fluid_real_t) mod->amount / 2.0;
}
-*/
- return 0; // (fluid_real_t) mod->amount / 2.0;
- }
+
// end S. Christian Collins' mod
- /* get the initial value of the first source */
- if (mod->src1 > 0) {
- if (mod->flags1 & FLUID_MOD_CC) {
- v1 = fluid_channel_get_cc(chan, mod->src1);
- } else { /* source 1 is one of the direct controllers */
- switch (mod->src1) {
- case FLUID_MOD_NONE: /* SF 2.01 8.2.1 item 0: src enum=0 => value is 1 */
- v1 = range1;
- break;
- case FLUID_MOD_VELOCITY:
- v1 = voice->vel;
- break;
- case FLUID_MOD_KEY:
- v1 = voice->key;
- break;
- case FLUID_MOD_KEYPRESSURE:
- v1 = fluid_channel_get_key_pressure (chan);
- break;
- case FLUID_MOD_CHANNELPRESSURE:
- v1 = fluid_channel_get_channel_pressure (chan);
- break;
- case FLUID_MOD_PITCHWHEEL:
- v1 = fluid_channel_get_pitch_bend (chan);
- range1 = 0x4000;
- break;
- case FLUID_MOD_PITCHWHEELSENS:
- v1 = fluid_channel_get_pitch_wheel_sensitivity (chan);
- break;
- default:
- v1 = 0.0;
- }
- }
+ /* get the initial value of the first source */
+ if(mod->src1 > 0)
+ {
+ v1 = fluid_mod_get_source_value(mod->src1, mod->flags1, &range1, voice);
- /* transform the input value */
- switch (mod->flags1 & 0x0f) {
- case 0: /* linear, unipolar, positive */
- v1 /= range1;
- break;
- case 1: /* linear, unipolar, negative */
- v1 = 1.0f - v1 / range1;
- break;
- case 2: /* linear, bipolar, positive */
- v1 = -1.0f + 2.0f * v1 / range1;
- break;
- case 3: /* linear, bipolar, negative */
- v1 = 1.0f - 2.0f * v1 / range1;
- break;
- case 4: /* concave, unipolar, positive */
- v1 = fluid_concave(v1);
- break;
- case 5: /* concave, unipolar, negative */
- v1 = fluid_concave(127 - v1);
- break;
- case 6: /* concave, bipolar, positive */
- v1 = (v1 > 64)? fluid_concave(2 * (v1 - 64)) : -fluid_concave(2 * (64 - v1));
- break;
- case 7: /* concave, bipolar, negative */
- v1 = (v1 > 64)? -fluid_concave(2 * (v1 - 64)) : fluid_concave(2 * (64 - v1));
- break;
- case 8: /* convex, unipolar, positive */
- v1 = fluid_convex(v1);
- break;
- case 9: /* convex, unipolar, negative */
- v1 = fluid_convex(127 - v1);
- break;
- case 10: /* convex, bipolar, positive */
- v1 = (v1 > 64)? fluid_convex(2 * (v1 - 64)) : -fluid_convex(2 * (64 - v1));
- break;
- case 11: /* convex, bipolar, negative */
- v1 = (v1 > 64)? -fluid_convex(2 * (v1 - 64)) : fluid_convex(2 * (64 - v1));
- break;
- case 12: /* switch, unipolar, positive */
- v1 = (v1 >= 64)? 1.0f : 0.0f;
- break;
- case 13: /* switch, unipolar, negative */
- v1 = (v1 >= 64)? 0.0f : 1.0f;
- break;
- case 14: /* switch, bipolar, positive */
- v1 = (v1 >= 64)? 1.0f : -1.0f;
- break;
- case 15: /* switch, bipolar, negative */
- v1 = (v1 >= 64)? -1.0f : 1.0f;
- break;
+ /* transform the input value */
+ v1 = fluid_mod_transform_source_value(v1, mod->flags1, range1);
}
- } else {
- return 0.0;
- }
-
- /* no need to go further */
- if (v1 == 0.0f) {
- return 0.0f;
- }
-
- /* get the second input source */
- if (mod->src2 > 0) {
- if (mod->flags2 & FLUID_MOD_CC) {
- v2 = fluid_channel_get_cc(chan, mod->src2);
- } else {
- switch (mod->src2) {
- case FLUID_MOD_NONE: /* SF 2.01 8.2.1 item 0: src enum=0 => value is 1 */
- v2 = range2;
- break;
- case FLUID_MOD_VELOCITY:
- v2 = voice->vel;
- break;
- case FLUID_MOD_KEY:
- v2 = voice->key;
- break;
- case FLUID_MOD_KEYPRESSURE:
- v2 = fluid_channel_get_key_pressure (chan);
- break;
- case FLUID_MOD_CHANNELPRESSURE:
- v2 = fluid_channel_get_channel_pressure (chan);
- break;
- case FLUID_MOD_PITCHWHEEL:
- v2 = fluid_channel_get_pitch_bend (chan);
- break;
- case FLUID_MOD_PITCHWHEELSENS:
- v2 = fluid_channel_get_pitch_wheel_sensitivity (chan);
- break;
- default:
- v1 = 0.0f;
- }
+ else
+ {
+ return 0.0;
}
- /* transform the second input value */
- switch (mod->flags2 & 0x0f) {
- case 0: /* linear, unipolar, positive */
- v2 /= range2;
- break;
- case 1: /* linear, unipolar, negative */
- v2 = 1.0f - v2 / range2;
- break;
- case 2: /* linear, bipolar, positive */
- v2 = -1.0f + 2.0f * v2 / range2;
- break;
- case 3: /* linear, bipolar, negative */
- v2 = -1.0f + 2.0f * v2 / range2;
- break;
- case 4: /* concave, unipolar, positive */
- v2 = fluid_concave(v2);
- break;
- case 5: /* concave, unipolar, negative */
- v2 = fluid_concave(127 - v2);
- break;
- case 6: /* concave, bipolar, positive */
- v2 = (v2 > 64)? fluid_concave(2 * (v2 - 64)) : -fluid_concave(2 * (64 - v2));
- break;
- case 7: /* concave, bipolar, negative */
- v2 = (v2 > 64)? -fluid_concave(2 * (v2 - 64)) : fluid_concave(2 * (64 - v2));
- break;
- case 8: /* convex, unipolar, positive */
- v2 = fluid_convex(v2);
- break;
- case 9: /* convex, unipolar, negative */
- v2 = 1.0f - fluid_convex(v2);
- break;
- case 10: /* convex, bipolar, positive */
- v2 = (v2 > 64)? -fluid_convex(2 * (v2 - 64)) : fluid_convex(2 * (64 - v2));
- break;
- case 11: /* convex, bipolar, negative */
- v2 = (v2 > 64)? -fluid_convex(2 * (v2 - 64)) : fluid_convex(2 * (64 - v2));
- break;
- case 12: /* switch, unipolar, positive */
- v2 = (v2 >= 64)? 1.0f : 0.0f;
- break;
- case 13: /* switch, unipolar, negative */
- v2 = (v2 >= 64)? 0.0f : 1.0f;
- break;
- case 14: /* switch, bipolar, positive */
- v2 = (v2 >= 64)? 1.0f : -1.0f;
- break;
- case 15: /* switch, bipolar, negative */
- v2 = (v2 >= 64)? -1.0f : 1.0f;
- break;
+ /* no need to go further */
+ if(v1 == 0.0f)
+ {
+ return 0.0f;
+ }
+
+ /* get the second input source */
+ if(mod->src2 > 0)
+ {
+ v2 = fluid_mod_get_source_value(mod->src2, mod->flags2, &range2, voice);
+
+ /* transform the second input value */
+ v2 = fluid_mod_transform_source_value(v2, mod->flags2, range2);
+ }
+ else
+ {
+ v2 = 1.0f;
}
- } else {
- v2 = 1.0f;
- }
- /* it's as simple as that: */
- return (fluid_real_t) mod->amount * v1 * v2;
+ /* it's as simple as that: */
+ return (fluid_real_t) mod->amount * v1 * v2;
}
/**
* Create a new uninitialized modulator structure.
* @return New allocated modulator or NULL if out of memory
*/
-fluid_mod_t*
-fluid_mod_new()
+fluid_mod_t *
+new_fluid_mod()
{
- fluid_mod_t* mod = FLUID_NEW (fluid_mod_t);
- if (mod == NULL) {
- FLUID_LOG(FLUID_ERR, "Out of memory");
- return NULL;
- }
- return mod;
+ fluid_mod_t *mod = FLUID_NEW(fluid_mod_t);
+
+ if(mod == NULL)
+ {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ return NULL;
+ }
+
+ return mod;
}
/**
@@ -412,9 +469,21 @@ fluid_mod_new()
* @param mod Modulator to free
*/
void
-fluid_mod_delete (fluid_mod_t *mod)
+delete_fluid_mod(fluid_mod_t *mod)
+{
+ FLUID_FREE(mod);
+}
+
+/**
+ * Returns the size of the fluid_mod_t structure.
+ *
+ * Useful in low latency scenarios e.g. to allocate a modulator on the stack.
+ *
+ * @return Size of fluid_mod_t in bytes
+ */
+size_t fluid_mod_sizeof()
{
- FLUID_FREE(mod);
+ return sizeof(fluid_mod_t);
}
/**
@@ -426,63 +495,181 @@ fluid_mod_delete (fluid_mod_t *mod)
* SF2.01 section 9.5.1 page 69, 'bullet' 3 defines 'identical'.
*/
int
-fluid_mod_test_identity (fluid_mod_t *mod1, fluid_mod_t *mod2)
+fluid_mod_test_identity(const fluid_mod_t *mod1, const fluid_mod_t *mod2)
+{
+ return mod1->dest == mod2->dest
+ && mod1->src1 == mod2->src1
+ && mod1->src2 == mod2->src2
+ && mod1->flags1 == mod2->flags1
+ && mod1->flags2 == mod2->flags2;
+}
+
+/**
+ * Check if the modulator has the given source.
+ *
+ * @param mod The modulator instance
+ * @param cc Boolean value indicating if ctrl is a CC controller or not
+ * @param ctrl The source to check for (if \c cc == FALSE : a value of type #fluid_mod_src, else the value of the MIDI CC to check for)
+ *
+ * @return TRUE if the modulator has the given source, FALSE otherwise.
+ */
+int fluid_mod_has_source(const fluid_mod_t *mod, int cc, int ctrl)
+{
+ return
+ (
+ (
+ ((mod->src1 == ctrl) && ((mod->flags1 & FLUID_MOD_CC) != 0) && (cc != 0))
+ || ((mod->src1 == ctrl) && ((mod->flags1 & FLUID_MOD_CC) == 0) && (cc == 0))
+ )
+ ||
+ (
+ ((mod->src2 == ctrl) && ((mod->flags2 & FLUID_MOD_CC) != 0) && (cc != 0))
+ || ((mod->src2 == ctrl) && ((mod->flags2 & FLUID_MOD_CC) == 0) && (cc == 0))
+ )
+ );
+}
+
+/**
+ * Check if the modulator has the given destination.
+ * @param mod The modulator instance
+ * @param gen The destination generator of type #fluid_gen_type to check for
+ * @return TRUE if the modulator has the given destination, FALSE otherwise.
+ */
+int fluid_mod_has_dest(const fluid_mod_t *mod, int gen)
{
- return mod1->dest == mod2->dest
- && mod1->src1 == mod2->src1
- && mod1->src2 == mod2->src2
- && mod1->flags1 == mod2->flags1
- && mod1->flags2 == mod2->flags2;
+ return mod->dest == gen;
}
+
/* debug function: Prints the contents of a modulator */
-void fluid_dump_modulator(fluid_mod_t * mod){
- int src1=mod->src1;
- int dest=mod->dest;
- int src2=mod->src2;
- int flags1=mod->flags1;
- int flags2=mod->flags2;
- fluid_real_t amount=(fluid_real_t)mod->amount;
-
- printf("Src: ");
- if (flags1 & FLUID_MOD_CC){
- printf("MIDI CC=%i",src1);
- } else {
- switch(src1){
- case FLUID_MOD_NONE:
- printf("None"); break;
- case FLUID_MOD_VELOCITY:
- printf("note-on velocity"); break;
- case FLUID_MOD_KEY:
- printf("Key nr"); break;
- case FLUID_MOD_KEYPRESSURE:
- printf("Poly pressure"); break;
- case FLUID_MOD_CHANNELPRESSURE:
- printf("Chan pressure"); break;
- case FLUID_MOD_PITCHWHEEL:
- printf("Pitch Wheel"); break;
- case FLUID_MOD_PITCHWHEELSENS:
- printf("Pitch Wheel sens"); break;
- default:
- printf("(unknown: %i)", src1);
- }; /* switch src1 */
- }; /* if not CC */
- if (flags1 & FLUID_MOD_NEGATIVE){printf("- ");} else {printf("+ ");};
- if (flags1 & FLUID_MOD_BIPOLAR){printf("bip ");} else {printf("unip ");};
- printf("-> ");
- switch(dest){
- case GEN_FILTERQ: printf("Q"); break;
- case GEN_FILTERFC: printf("fc"); break;
- case GEN_VIBLFOTOPITCH: printf("VibLFO-to-pitch"); break;
- case GEN_MODENVTOPITCH: printf("ModEnv-to-pitch"); break;
- case GEN_MODLFOTOPITCH: printf("ModLFO-to-pitch"); break;
- case GEN_CHORUSSEND: printf("Chorus send"); break;
- case GEN_REVERBSEND: printf("Reverb send"); break;
- case GEN_PAN: printf("pan"); break;
- case GEN_ATTENUATION: printf("att"); break;
- default: printf("dest %i",dest);
- }; /* switch dest */
- printf(", amount %f flags %i src2 %i flags2 %i\n",amount, flags1, src2, flags2);
-};
+#ifdef DEBUG
+void fluid_dump_modulator(fluid_mod_t *mod)
+{
+ int src1 = mod->src1;
+ int dest = mod->dest;
+ int src2 = mod->src2;
+ int flags1 = mod->flags1;
+ int flags2 = mod->flags2;
+ fluid_real_t amount = (fluid_real_t)mod->amount;
+
+ printf("Src: ");
+ if(flags1 & FLUID_MOD_CC)
+ {
+ printf("MIDI CC=%i", src1);
+ }
+ else
+ {
+ switch(src1)
+ {
+ case FLUID_MOD_NONE:
+ printf("None");
+ break;
+
+ case FLUID_MOD_VELOCITY:
+ printf("note-on velocity");
+ break;
+
+ case FLUID_MOD_KEY:
+ printf("Key nr");
+ break;
+
+ case FLUID_MOD_KEYPRESSURE:
+ printf("Poly pressure");
+ break;
+
+ case FLUID_MOD_CHANNELPRESSURE:
+ printf("Chan pressure");
+ break;
+
+ case FLUID_MOD_PITCHWHEEL:
+ printf("Pitch Wheel");
+ break;
+
+ case FLUID_MOD_PITCHWHEELSENS:
+ printf("Pitch Wheel sens");
+ break;
+
+ default:
+ printf("(unknown: %i)", src1);
+ }; /* switch src1 */
+ }; /* if not CC */
+
+ if(flags1 & FLUID_MOD_NEGATIVE)
+ {
+ printf("- ");
+ }
+ else
+ {
+ printf("+ ");
+ };
+
+ if(flags1 & FLUID_MOD_BIPOLAR)
+ {
+ printf("bip ");
+ }
+ else
+ {
+ printf("unip ");
+ };
+
+ printf("-> ");
+
+ switch(dest)
+ {
+ case GEN_FILTERQ:
+ printf("Q");
+ break;
+
+ case GEN_FILTERFC:
+ printf("fc");
+ break;
+
+ case GEN_CUSTOM_FILTERQ:
+ printf("custom-Q");
+ break;
+
+ case GEN_CUSTOM_FILTERFC:
+ printf("custom-fc");
+ break;
+
+ case GEN_VIBLFOTOPITCH:
+ printf("VibLFO-to-pitch");
+ break;
+
+ case GEN_MODENVTOPITCH:
+ printf("ModEnv-to-pitch");
+ break;
+
+ case GEN_MODLFOTOPITCH:
+ printf("ModLFO-to-pitch");
+ break;
+
+ case GEN_CHORUSSEND:
+ printf("Chorus send");
+ break;
+
+ case GEN_REVERBSEND:
+ printf("Reverb send");
+ break;
+
+ case GEN_PAN:
+ printf("pan");
+ break;
+
+ case GEN_CUSTOM_BALANCE:
+ printf("balance");
+ break;
+
+ case GEN_ATTENUATION:
+ printf("att");
+ break;
+
+ default:
+ printf("dest %i", dest);
+ }; /* switch dest */
+
+ printf(", amount %f flags %i src2 %i flags2 %i\n", amount, flags1, src2, flags2);
+};
+#endif
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