#include <Sequencer.h>
Inheritance diagram for Sequencer
Public Methods | |
| Sequencer () | |
| Sequencer Constructor. Query the sequencer for the synth devices. If there is a wavetable synth then use it. | |
| virtual | ~Sequencer () |
| virtual Result | Play (Sample& sample) |
| Play the given sample. | |
| virtual Result | PlayNoWait (Sample& sample, int& NewChanelID, int& NewVoice) |
| Play the sample and return without waiting for it to finish. | |
| virtual Result | WaitForVoiceToFinish (int voice, int ChannelID) |
| do as it says. | |
| virtual int | AllocateVoice ( const Sample& sample, int voice=-1 ) |
| Allocates a voice for a sound which will be mixed into the buffer. More... | |
| virtual Result | DeleteVoice (int voice) |
| Remove the given voice from the Audio manager. | |
| virtual int | VoicesAllocated () const |
| Return the number of current voices allocated. | |
| virtual Channel* | AllocateChannel () |
| Create a new Channel. | |
| virtual void | DeleteChannel (Channel*& channel) |
| Delete the given Channel. | |
| virtual Result | SetLocation (int x, int y, int z, int channel) |
| virtual Result | SetX (int x, int channel) |
| virtual Result | SetY (int y, int channel) |
| virtual Result | SetZ (int z, int channel) |
| virtual Result | GetLocation (int& x, int& y, int& z, int channel) |
| virtual Result | GetX (int& x, int channel) |
| virtual Result | GetY (int& y, int channel) |
| virtual Result | GetZ (int& z, int channel) |
| virtual Result | SetVolume (Volume volume, int channel) |
| Set the expression volume. The final volume will be "main volume * expression * velocity". | |
| virtual Volume | GetVolume (int channel) |
| virtual Result | SetVelocity (Velocity velocity, int channel) |
| velocity -- how hard the key was pressed -- is this useful? | |
| virtual Velocity | GetVelocity (int channel) |
| virtual Result | SetFrequency (Frequency frequency, int channel) |
| PROBLEM: the sequencer expects me set the pitch of the voice by giving it a note and pitch bend rather than a frequency. If the voice is already playing it expects me to bend the pitch of the note. Thus we need to convert the frequency to a note and pitch bend . If the voice is already playing then we need to convert the frequency to a note, get the current note and pitch bend and then calculate the difference. SEQ_BENDER has a value from 0 to 16384, and the center (no pitch shift) is 8192. | |
| virtual Frequency | GetFrequency (int channel) |
| virtual Result | SetPosition (unsigned long position, int channel) |
| position. | |
| unsigned long | GetPosition (int channel) |
| virtual Result | SetVoice (int voice, int channel) |
| Set the voice for the given channel. | |
| virtual int | GetVoice (int channel) |
| get the voice that has been assigned to the channel. | |
| virtual int | NextChannel () |
| return the channel id for the next channel. | |
| virtual long | GetPlaybackRate () |
| virtual void | SetTimeout (long milliseconds) |
| virtual void | StartTimeout () |
| virtual void | StopTimeout () |
| virtual void | WaitForTimeout () |
| void | SetChorusMode (int mode) |
| void | SetChorusDepth (int channel, int depth) |
| void | SetReverbMode (int mode) |
| void | SetReverbDepth (int channel, int depth) |
| bool | SetDevice (int device) |
| This is used to set the synth device to use. On my AWE 64 Value, when I cat /dev/sndstat I get Synth devices: 0: Yamaha OPL-3 1: AWE32-0.4.2c (RAM512k). | |
| int | GetDevice () |
| void | Start (int channel) |
| Start the channel playing. | |
| void | Stop (int channel) |
| Stop the channel from making any noise. | |
| void | StartNote (int channel, int note = 60, int velocity = 64) |
| void | StopNote (int channel, int note = 60, int velocity = 64) |
Aiming to make portable to gus, awe, and any other card that can be controlled through /dev/sequencer
With a bit of work this is could also be used to control the OPL-3 chip, adlib, mpu401 or any other device that shows up under "Synth devices" in /dev/sndstat.
|
|
Allocates a voice for a sound which will be mixed into the buffer. It returns number corresponding to it's place in the array of samples (voices.) this should make a copy of the sample structure or at least not rely on the reference to Sample given always being valid it will assign the voice to the number "voice" or if voice is -1 then it will get the next free voice number and return it. Reimplemented from Audio. |
1.2.3 written by Dimitri van Heesch,
© 1997-2000