This is DSPRecorder.h in view mode; [Download] [Up]
#import <sound/sounddriver.h>
#import <sound/soundstruct.h>
#import "Recorder.h"
/* Tag for DMA messages coming from the DSP */
#define READ_TAG 1
#define HIGH_WATER ((512+256)*1024)
#define LOW_WATER (512 * 1024)
#define BYTES_PER_16BIT 2
#define REGION_SIZE HIGH_WATER
#define READ_BUF_SIZE (vm_page_size / BYTES_PER_16BIT)
@interface DSPRecorder:Recorder
{
int bytesEnqueued; /* # of samples allocated for DSP buffers */
snddriver_handlers_t msgHandlers;
SNDSoundStruct *dspProgram; /* DSP program to load and run */
port_t devicePort;
port_t ownerPort;
port_t commandPort;
port_t streamPort;
port_t replyPort;
}
+ new;
/*
* Factory method to instantiate a new recorder object.
*/
/***
***
*** Methods inherited from the Recorder object
***
***/
- prepare;
/*
* Prepare to record, state => REC_PAUSED
*/
- run;
/*
* Start recording, state => REC_RUNNING
*/
- pause;
/*
* Pause the recording, state => REC_PAUSED
*/
- stop;
/*
* Stop recording, state => REC_STOPPED
*/
/***
***
*** Internal methods
***
***/
- setDspProgram :(SNDSoundStruct *)dsp_program;
- (SNDSoundStruct *)dspProgram;
- (snddriver_handlers_t *)msgHandlers;
- recordedData :(int)tag :(char *)data :(int)nbytes;
- updateStream;
@end
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.