* 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
/*
* envelope data
*/
-struct _fluid_env_data_t {
- unsigned int count;
- fluid_real_t coeff;
- fluid_real_t increment;
- fluid_real_t min;
- fluid_real_t max;
+struct _fluid_env_data_t
+{
+ unsigned int count;
+ fluid_real_t coeff;
+ fluid_real_t increment;
+ fluid_real_t min;
+ fluid_real_t max;
};
/* Indices for envelope tables */
-enum fluid_voice_envelope_index_t{
- FLUID_VOICE_ENVDELAY,
- FLUID_VOICE_ENVATTACK,
- FLUID_VOICE_ENVHOLD,
- FLUID_VOICE_ENVDECAY,
- FLUID_VOICE_ENVSUSTAIN,
- FLUID_VOICE_ENVRELEASE,
- FLUID_VOICE_ENVFINISHED,
- FLUID_VOICE_ENVLAST
+enum fluid_voice_envelope_index_t
+{
+ FLUID_VOICE_ENVDELAY,
+ FLUID_VOICE_ENVATTACK,
+ FLUID_VOICE_ENVHOLD,
+ FLUID_VOICE_ENVDECAY,
+ FLUID_VOICE_ENVSUSTAIN,
+ FLUID_VOICE_ENVRELEASE,
+ FLUID_VOICE_ENVFINISHED,
+ FLUID_VOICE_ENVLAST
};
typedef enum fluid_voice_envelope_index_t fluid_adsr_env_section_t;
typedef struct _fluid_adsr_env_t fluid_adsr_env_t;
-struct _fluid_adsr_env_t {
- fluid_env_data_t data[FLUID_VOICE_ENVLAST];
- unsigned int count;
- int section;
- fluid_real_t val; /* the current value of the envelope */
+struct _fluid_adsr_env_t
+{
+ fluid_env_data_t data[FLUID_VOICE_ENVLAST];
+ unsigned int count;
+ int section;
+ fluid_real_t val; /* the current value of the envelope */
};
/* For performance, all functions are inlined */
-static FLUID_INLINE void
-fluid_adsr_env_calc(fluid_adsr_env_t* env, int is_volenv)
+static FLUID_INLINE void
+fluid_adsr_env_calc(fluid_adsr_env_t *env, int is_volenv)
{
- fluid_env_data_t* env_data;
- fluid_real_t x;
-
- env_data = &env->data[env->section];
-
- /* skip to the next section of the envelope if necessary */
- while (env->count >= env_data->count)
- {
- // If we're switching envelope stages from decay to sustain, force the value to be the end value of the previous stage
- // Hmm, should this only apply to volenv? It was so before refactoring, so keep it for now. [DH]
- if (env->section == FLUID_VOICE_ENVDECAY && is_volenv)
- env->val = env_data->min * env_data->coeff;
-
- env_data = &env->data[++env->section];
- env->count = 0;
- }
+ fluid_env_data_t *env_data;
+ fluid_real_t x;
+
+ env_data = &env->data[env->section];
+
+ /* skip to the next section of the envelope if necessary */
+ while(env->count >= env_data->count)
+ {
+ // If we're switching envelope stages from decay to sustain, force the value to be the end value of the previous stage
+ // Hmm, should this only apply to volenv? It was so before refactoring, so keep it for now. [DH]
+ if(env->section == FLUID_VOICE_ENVDECAY && is_volenv)
+ {
+ env->val = env_data->min * env_data->coeff;
+ }
+
+ env_data = &env->data[++env->section];
+ env->count = 0;
+ }
+
+ /* calculate the envelope value and check for valid range */
+ x = env_data->coeff * env->val + env_data->increment;
+
+ if(x < env_data->min)
+ {
+ x = env_data->min;
+ env->section++;
+ env->count = 0;
+ }
+ else if(x > env_data->max)
+ {
+ x = env_data->max;
+ env->section++;
+ env->count = 0;
+ }
+ else
+ {
+ env->count++;
+ }
+
+ env->val = x;
- /* calculate the envelope value and check for valid range */
- x = env_data->coeff * env->val + env_data->increment;
- if (x < env_data->min)
- {
- x = env_data->min;
- env->section++;
- env->count = 0;
- }
- else if (x > env_data->max)
- {
- x = env_data->max;
- env->section++;
- env->count = 0;
- }
-
- env->val = x;
- env->count++;
}
-/* This one cannot be inlined since it is referenced in
+/* This one cannot be inlined since it is referenced in
the event queue */
-void
-fluid_adsr_env_set_data(fluid_adsr_env_t* env,
- fluid_adsr_env_section_t section,
- unsigned int count,
- fluid_real_t coeff,
- fluid_real_t increment,
- fluid_real_t min,
- fluid_real_t max);
-
-static inline void
-fluid_adsr_env_reset(fluid_adsr_env_t* env)
+DECLARE_FLUID_RVOICE_FUNCTION(fluid_adsr_env_set_data);
+
+static FLUID_INLINE void
+fluid_adsr_env_reset(fluid_adsr_env_t *env)
{
- env->count = 0;
- env->section = 0;
- env->val = 0.0f;
+ env->count = 0;
+ env->section = 0;
+ env->val = 0.0f;
}
-static inline fluid_real_t
-fluid_adsr_env_get_val(fluid_adsr_env_t* env)
+static FLUID_INLINE fluid_real_t
+fluid_adsr_env_get_val(fluid_adsr_env_t *env)
{
- return env->val;
+ return env->val;
}
-static inline void
-fluid_adsr_env_set_val(fluid_adsr_env_t* env, fluid_real_t val)
+static FLUID_INLINE void
+fluid_adsr_env_set_val(fluid_adsr_env_t *env, fluid_real_t val)
{
- env->val = val;
+ env->val = val;
}
-static inline fluid_adsr_env_section_t
-fluid_adsr_env_get_section(fluid_adsr_env_t* env)
+static FLUID_INLINE fluid_adsr_env_section_t
+fluid_adsr_env_get_section(fluid_adsr_env_t *env)
{
- return env->section;
+ return env->section;
}
-static inline void
-fluid_adsr_env_set_section(fluid_adsr_env_t* env,
+static FLUID_INLINE void
+fluid_adsr_env_set_section(fluid_adsr_env_t *env,
fluid_adsr_env_section_t section)
{
- env->section = section;
- env->count = 0;
+ env->section = section;
+ env->count = 0;
}
-/* Used for determining which voice to kill.
+/* Used for determining which voice to kill.
Returns max amplitude from now, and forward in time.
*/
-static inline fluid_real_t
-fluid_adsr_env_get_max_val(fluid_adsr_env_t* env)
+static FLUID_INLINE fluid_real_t
+fluid_adsr_env_get_max_val(fluid_adsr_env_t *env)
{
- if (env->section > FLUID_VOICE_ENVATTACK){
- return env->val * 1000;
- } else {
- return env->data[FLUID_VOICE_ENVATTACK].max;
- }
+ if(env->section > FLUID_VOICE_ENVATTACK)
+ {
+ return env->val * 1000;
+ }
+ else
+ {
+ return env->data[FLUID_VOICE_ENVATTACK].max;
+ }
}
#endif
projects / ardour.git / blobdiff