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Diffstat (limited to 'arm-fm-22k/lib_src/eas_synth.h')
| -rw-r--r-- | arm-fm-22k/lib_src/eas_synth.h | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/arm-fm-22k/lib_src/eas_synth.h b/arm-fm-22k/lib_src/eas_synth.h new file mode 100644 index 0000000..b242b03 --- /dev/null +++ b/arm-fm-22k/lib_src/eas_synth.h @@ -0,0 +1,395 @@ +/*----------------------------------------------------------------------------
+ *
+ * File:
+ * eas_synth.h
+ *
+ * Contents and purpose:
+ * Declarations, interfaces, and prototypes for synth.
+ *
+ * Copyright Sonic Network Inc. 2004, 2005
+ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *
+ *----------------------------------------------------------------------------
+ * Revision Control:
+ * $Revision: 718 $
+ * $Date: 2007-06-08 16:43:16 -0700 (Fri, 08 Jun 2007) $
+ *----------------------------------------------------------------------------
+*/
+
+#ifndef _EAS_SYNTH_H
+#define _EAS_SYNTH_H
+
+#include "eas_types.h"
+#include "eas_sndlib.h"
+
+#ifdef _WT_SYNTH
+#include "eas_wtsynth.h"
+#endif
+
+#ifdef _FM_SYNTH
+#include "eas_fmsynth.h"
+#endif
+
+#ifndef NUM_OUTPUT_CHANNELS
+#define NUM_OUTPUT_CHANNELS 2
+#endif
+
+#ifndef MAX_SYNTH_VOICES
+#define MAX_SYNTH_VOICES 64
+#endif
+
+#ifndef MAX_VIRTUAL_SYNTHESIZERS
+#define MAX_VIRTUAL_SYNTHESIZERS 4
+#endif
+
+/* defines */
+#ifndef NUM_PRIMARY_VOICES
+#define NUM_PRIMARY_VOICES MAX_SYNTH_VOICES
+#elif !defined(NUM_SECONDARY_VOICES)
+#define NUM_SECONDARY_VOICES (MAX_SYNTH_VOICES - NUM_PRIMARY_VOICES)
+#endif
+
+#if defined(EAS_WT_SYNTH)
+#define NUM_WT_VOICES MAX_SYNTH_VOICES
+
+/* FM on MCU */
+#elif defined(EAS_FM_SYNTH)
+#define NUM_FM_VOICES MAX_SYNTH_VOICES
+
+/* wavetable drums on MCU, wavetable melodic on DSP */
+#elif defined(EAS_SPLIT_WT_SYNTH)
+#define NUM_WT_VOICES MAX_SYNTH_VOICES
+
+/* wavetable drums and FM melodic on MCU */
+#elif defined(EAS_HYBRID_SYNTH)
+#define NUM_WT_VOICES NUM_PRIMARY_VOICES
+#define NUM_FM_VOICES NUM_SECONDARY_VOICES
+
+/* wavetable drums on MCU, FM melodic on DSP */
+#elif defined(EAS_SPLIT_HYBRID_SYNTH)
+#define NUM_WT_VOICES NUM_PRIMARY_VOICES
+#define NUM_FM_VOICES NUM_SECONDARY_VOICES
+
+/* FM synth on DSP */
+#elif defined(EAS_SPLIT_FM_SYNTH)
+#define NUM_FM_VOICES MAX_SYNTH_VOICES
+
+#else
+#error "Unrecognized architecture option"
+#endif
+
+#define NUM_SYNTH_CHANNELS 16
+
+#define DEFAULT_SYNTH_VOICES MAX_SYNTH_VOICES
+
+/* use the following values to specify unassigned channels or voices */
+#define UNASSIGNED_SYNTH_CHANNEL NUM_SYNTH_CHANNELS
+#define UNASSIGNED_SYNTH_VOICE MAX_SYNTH_VOICES
+
+
+/* synth parameters are updated every SYNTH_UPDATE_PERIOD_IN_SAMPLES */
+#define SYNTH_UPDATE_PERIOD_IN_SAMPLES (EAS_I32)(0x1L << SYNTH_UPDATE_PERIOD_IN_BITS)
+
+/* stealing weighting factors */
+#define NOTE_AGE_STEAL_WEIGHT 1
+#define NOTE_GAIN_STEAL_WEIGHT 4
+#define CHANNEL_POLY_STEAL_WEIGHT 12
+#define CHANNEL_PRIORITY_STEAL_WEIGHT 2
+#define NOTE_MATCH_PENALTY 128
+#define SYNTH_PRIORITY_WEIGHT 8
+
+/* default synth master volume */
+#define DEFAULT_SYNTH_MASTER_VOLUME 0x7fff
+
+#define DEFAULT_SYNTH_PRIORITY 5
+
+/* default tuning values */
+#define DEFAULT_PITCH_BEND_SENSITIVITY 200 /* 2 semitones */
+#define DEFAULT_FINE_PITCH 0 /* 0 cents */
+#define DEFAULT_COARSE_PITCH 0 /* 0 semitones */
+
+/* default drum channel is 10, but is internally 9 due to unit offset */
+#define DEFAULT_DRUM_CHANNEL 9
+
+/* drum channel can simultaneously play this many voices at most */
+#define DEFAULT_CHANNEL_POLYPHONY_LIMIT 2
+
+/* default instrument is acoustic piano */
+#define DEFAULT_MELODY_BANK_MSB 0x79
+#define DEFAULT_RHYTHM_BANK_MSB 0x78
+#define DEFAULT_MELODY_BANK_NUMBER (DEFAULT_MELODY_BANK_MSB << 8)
+#define DEFAULT_RHYTHM_BANK_NUMBER (DEFAULT_RHYTHM_BANK_MSB << 8)
+#define DEFAULT_SYNTH_PROGRAM_NUMBER 0
+
+#define DEFAULT_PITCH_BEND 0x2000 /* 0x2000 == (0x40 << 7) | 0x00 */
+#define DEFAULT_MOD_WHEEL 0
+#define DEFAULT_CHANNEL_VOLUME 0x64
+#define DEFAULT_PAN 0x40 /* decimal 64, center */
+
+#ifdef _REVERB
+#define DEFAULT_REVERB_SEND 40 /* some reverb */
+#endif
+
+#ifdef _CHORUS
+#define DEFAULT_CHORUS_SEND 0 /* no chorus */
+#endif
+
+#define DEFAULT_EAS_FILTER_CUTOFF_FREQUENCY 0 /* EAS synth uses a different default */
+#define DEFAULT_FILTER_RESONANCE 0
+#define DEFAULT_EXPRESSION 0x7F
+
+#define DEFAULT_CHANNEL_PRESSURE 0
+
+#define DEFAULT_REGISTERED_PARAM 0x3FFF
+
+#define DEFAULT_CHANNEL_STATIC_GAIN 0
+#define DEFAULT_CHANNEL_STATIC_PITCH 0
+
+#define DEFAULT_LFO_MOD_WHEEL_TO_PITCH_CENTS 50
+#define DEFAULT_LFO_CHANNEL_PRESSURE_TO_PITCH_CENTS 50
+
+#define DEFAULT_KEY_NUMBER 0x69
+#define DEFAULT_VELOCITY 0x64
+#define DEFAULT_REGION_INDEX 0
+#define DEFAULT_ARTICULATION_INDEX 0
+#define DEFAULT_VOICE_GAIN 0
+#define DEFAULT_AGE 0
+#define DEFAULT_SP_MIDI_PRIORITY 16
+
+
+/* filter defines */
+#define DEFAULT_FILTER_ZERO 0
+#define FILTER_CUTOFF_MAX_PITCH_CENTS 1919
+#define FILTER_CUTOFF_MIN_PITCH_CENTS -4467
+#define A5_PITCH_OFFSET_IN_CENTS 6900
+
+/*------------------------------------
+ * S_SYNTH_CHANNEL data structure
+ *------------------------------------
+*/
+
+/* S_SYNTH_CHANNEL.m_nFlags */
+#define CHANNEL_FLAG_SUSTAIN_PEDAL 0x01
+#define CHANNEL_FLAG_MUTE 0x02
+#define CHANNEL_FLAG_UPDATE_CHANNEL_PARAMETERS 0x04
+#define CHANNEL_FLAG_RHYTHM_CHANNEL 0x08
+#define CHANNEL_FLAG_EXTERNAL_AUDIO 0x10
+#define DEFAULT_CHANNEL_FLAGS 0
+
+/* macros for extracting virtual synth and channel numbers */
+#define GET_VSYNTH(a) ((a) >> 4)
+#define GET_CHANNEL(a) ((a) & 15)
+
+typedef struct s_synth_channel_tag
+{
+ /* use static channel parameters to reduce MIPs */
+ /* parameters shared by multiple voices assigned to same channel */
+ EAS_I32 staticPitch; /* (pitch bend * pitch sens) + fine pitch */
+ EAS_I16 staticGain; /* (CC7 * CC11 * master vol)^2 */
+
+ EAS_U16 regionIndex; /* index of first region in program */
+
+ EAS_U16 bankNum; /* play programs from this bank */
+ EAS_I16 pitchBend; /* pitch wheel value */
+ EAS_I16 pitchBendSensitivity;
+ EAS_I16 registeredParam; /* currently selected registered param */
+
+
+#if defined(_FM_SYNTH)
+ EAS_I16 lfoAmt; /* amount of LFO to apply to voice */
+#endif
+
+ EAS_U8 programNum; /* play this instrument number */
+ EAS_U8 modWheel; /* CC1 */
+ EAS_U8 volume; /* CC7 */
+ EAS_U8 pan; /* CC10 */
+
+ EAS_U8 expression; /* CC11 */
+
+ /* the following parameters are controlled by RPNs */
+ EAS_I8 finePitch;
+ EAS_I8 coarsePitch;
+
+ EAS_U8 channelPressure; /* applied to all voices on a given channel */
+
+ EAS_U8 channelFlags; /* bit field channelFlags for */
+ /* CC64, SP-MIDI channel masking */
+
+ EAS_U8 pool; /* SPMIDI channel voice pool */
+ EAS_U8 mip; /* SPMIDI MIP setting */
+
+#ifdef _REVERB
+ EAS_U8 reverbSend; /* CC91 */
+#endif
+
+#ifdef _CHORUS
+ EAS_U8 chorusSend; /* CC93 */
+#endif
+} S_SYNTH_CHANNEL;
+
+/*------------------------------------
+ * S_SYNTH_VOICE data structure
+ *------------------------------------
+*/
+
+/* S_SYNTH_VOICE.m_nFlags */
+#define VOICE_FLAG_UPDATE_VOICE_PARAMETERS 0x01
+#define VOICE_FLAG_SUSTAIN_PEDAL_DEFER_NOTE_OFF 0x02
+#define VOICE_FLAG_DEFER_MIDI_NOTE_OFF 0x04
+#define VOICE_FLAG_NO_SAMPLES_SYNTHESIZED_YET 0x08
+#define VOICE_FLAG_DEFER_MUTE 0x40
+#define DEFAULT_VOICE_FLAGS 0
+
+/* S_SYNTH_VOICE.m_eState */
+typedef enum {
+
+ eVoiceStateFree = 0,
+ eVoiceStateStart,
+ eVoiceStatePlay,
+ eVoiceStateRelease,
+ eVoiceStateMuting,
+ eVoiceStateStolen,
+ eVoiceStateInvalid /* should never be in this state! */
+
+} E_VOICE_STATE;
+#define DEFAULT_VOICE_STATE eVoiceStateFree
+
+typedef struct s_synth_voice_tag
+{
+
+/* These parameters are common to both wavetable and FM
+ * synthesizers. The voice manager should only access this data.
+ * Any other data should be manipulated by the code that is
+ * specific to that synthesizer and reflected back through the
+ * common state data available here.
+ */
+ EAS_U16 regionIndex; /* index to wave and playback params */
+ EAS_I16 gain; /* current gain */
+ EAS_U16 age; /* large value means old note */
+ EAS_U16 nextRegionIndex; /* index to wave and playback params */
+ EAS_U8 voiceState; /* current voice state */
+ EAS_U8 voiceFlags; /* misc flags/bit fields */
+ EAS_U8 channel; /* this voice plays on this synth channel */
+ EAS_U8 note; /* 12 <= key number <= 108 */
+ EAS_U8 velocity; /* 0 <= velocity <= 127 */
+ EAS_U8 nextChannel; /* play stolen voice on this channel */
+ EAS_U8 nextNote; /* 12 <= key number <= 108 */
+ EAS_U8 nextVelocity; /* 0 <= velocity <= 127 */
+} S_SYNTH_VOICE;
+
+/*------------------------------------
+ * S_SYNTH data structure
+ *
+ * One instance for each MIDI stream
+ *------------------------------------
+*/
+
+/* S_SYNTH.m_nFlags */
+#define SYNTH_FLAG_RESET_IS_REQUESTED 0x01
+#define SYNTH_FLAG_SP_MIDI_ON 0x02
+#define SYNTH_FLAG_UPDATE_ALL_CHANNEL_PARAMETERS 0x04
+#define SYNTH_FLAG_DEFERRED_MIDI_NOTE_OFF_PENDING 0x08
+#define DEFAULT_SYNTH_FLAGS SYNTH_FLAG_UPDATE_ALL_CHANNEL_PARAMETERS
+
+typedef struct s_synth_tag
+{
+ struct s_eas_data_tag *pEASData;
+ const S_EAS *pEAS;
+
+#ifdef DLS_SYNTHESIZER
+ S_DLS *pDLS;
+#endif
+
+#ifdef EXTERNAL_AUDIO
+ EAS_EXT_PRG_CHG_FUNC cbProgChgFunc;
+ EAS_EXT_EVENT_FUNC cbEventFunc;
+ EAS_VOID_PTR *pExtAudioInstData;
+#endif
+
+ S_SYNTH_CHANNEL channels[NUM_SYNTH_CHANNELS];
+ EAS_I32 totalNoteCount;
+ EAS_U16 maxPolyphony;
+ EAS_U16 numActiveVoices;
+ EAS_U16 masterVolume;
+ EAS_U8 channelsByPriority[NUM_SYNTH_CHANNELS];
+ EAS_U8 poolCount[NUM_SYNTH_CHANNELS];
+ EAS_U8 poolAlloc[NUM_SYNTH_CHANNELS];
+ EAS_U8 synthFlags;
+ EAS_I8 globalTranspose;
+ EAS_U8 vSynthNum;
+ EAS_U8 refCount;
+ EAS_U8 priority;
+} S_SYNTH;
+
+/*------------------------------------
+ * S_VOICE_MGR data structure
+ *
+ * One instance for each EAS library instance
+ *------------------------------------
+*/
+typedef struct s_voice_mgr_tag
+{
+ S_SYNTH *pSynth[MAX_VIRTUAL_SYNTHESIZERS];
+ EAS_PCM voiceBuffer[SYNTH_UPDATE_PERIOD_IN_SAMPLES];
+
+#ifdef _FM_SYNTH
+ EAS_PCM operMixBuffer[SYNTH_UPDATE_PERIOD_IN_SAMPLES];
+ S_FM_VOICE fmVoices[NUM_FM_VOICES];
+#endif
+
+#ifdef _WT_SYNTH
+ S_WT_VOICE wtVoices[NUM_WT_VOICES];
+#endif
+
+#ifdef _REVERB
+ EAS_PCM reverbSendBuffer[NUM_OUTPUT_CHANNELS * SYNTH_UPDATE_PERIOD_IN_SAMPLES];
+#endif
+
+#ifdef _CHORUS
+ EAS_PCM chorusSendBuffer[NUM_OUTPUT_CHANNELS * SYNTH_UPDATE_PERIOD_IN_SAMPLES];
+#endif
+ S_SYNTH_VOICE voices[MAX_SYNTH_VOICES];
+
+ EAS_SNDLIB_HANDLE pGlobalEAS;
+
+#ifdef DLS_SYNTHESIZER
+ S_DLS *pGlobalDLS;
+#endif
+
+#ifdef _SPLIT_ARCHITECTURE
+ EAS_FRAME_BUFFER_HANDLE pFrameBuffer;
+#endif
+
+#if defined(_SECONDARY_SYNTH) || defined(EAS_SPLIT_WT_SYNTH)
+ EAS_U16 maxPolyphonyPrimary;
+ EAS_U16 maxPolyphonySecondary;
+#endif
+
+ EAS_I32 workload;
+ EAS_I32 maxWorkLoad;
+
+ EAS_U16 activeVoices;
+ EAS_U16 maxPolyphony;
+
+ EAS_U16 age;
+
+/* limits the number of voice starts in a frame for split architecture */
+#ifdef MAX_VOICE_STARTS
+ EAS_U16 numVoiceStarts;
+#endif
+} S_VOICE_MGR;
+
+#endif /* #ifdef _EAS_SYNTH_H */
+
+
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