Copyright ©1995 by NeXT Computer, Inc. All Rights Reserved.
| Driver Functions |
| DSP Functions
Start the DSP |
| kern_return_t | snddriver_dsp_boot(port_t commandPort, int *bootImage, int imageSize, int priority) | |
| kern_return_t | snddriver_dsp_reset(port_t commandPort, int priority) |
| Transfer data to and from the DSP via DMA |
| kern_return_t | snddriver_dsp_dma_write(port_t commandPort, int elementCount, int dataFormat, pointer_t data) | |
| kern_return_t | snddriver_dsp_dma_read(port_t commandPort, int elementCount, int dataFormat, pointer_t data) |
| Enqueue a DSP command |
| kern_return_t | snddriver_dsp_host_cmd(port_t commandPort, u_int hostCommand, u_int priority) |
| Set the sound driver's protocol vis-a-vis the DSP |
| kern_return_t s | nddriver_dsp_protocol(port_t devicePort, port_t ownerPort, int protocol) |
| Set the DSP host flags |
| kern_return_t | snddriver_dsp_set_flags(port_t commandPort, u_int flagMask,u_int flagValue, u_int priority) |
| Transfer data to and from the DSP |
| kern_return_t | snddriver_dsp_write(port_t commandPort, void *buffer, int elementCount, int elementSize, int priority) | |
| kern_return_t | snddriver_dsp_read(port_t commandPort, void *buffer, int elementCount, int elementSize, int priority) | |
| kern_return_t | snddriver_dsp_read_messages(port_t commandPort, void *buffer, int elementCount, int elementSize, int priority) | |
| kern_return_t | snddriver_dsp_read_data(port_t commandPort, void **buffer, int elementCount, int elementSize, int priority) |
| Request a DSP host interface register condition |
| kern_return_t | snddriver_dspcmd_req_condition(port_t commandPort, u_int registerMask, u_int conditionFlags, int priority, port_t replyPort) |
| Request the contents of the DSP-reply buffers |
| kern_return_t | snddriver_dspcmd_req_msg(port_t commandPort, port_t replyPort) | |
| kern_return_t | snddriver_dspcmd_req_err(port_t commandPort, port_t replyPort) |
| Get the DSP command port |
| kern_return_t | snddriver_get_dsp_cmd_port(port_t devicePort, port_t ownerPort, port_t *commandPort) |
| Driver Setup and Access
Acquire ownership of sound resources |
| kern_return_t | snddriver_set_dsp_owner_port(port_t devicePort, port_t ownerPort, port_t *negotiationPort) | |
| kern_return_t | snddriver_set_sndin_owner_port(port_t devicePort, port_t ownerPort, port_t *negotiationPort) | |
| kern_return_t | snddriver_set_sndout_owner_port(port_t devicePort, port_t ownerPort, port_t *negotiationPort) |
| Reallocate the sound driver device port |
| kern_return_t | snddriver_new_device_port(port_t devicePort, port_t superuserPort, port_t *newDevicePort) |
| Respond to asynchronous sound driver messages |
| kern_return_t | snddriver_reply_handler(msg_header_t *reply, snddriver_handlers_t *handlers) |
| Set and get sound playback attributes |
| kern_return_t | snddriver_set_device_parms(port_t devicePort, boolean_t speakerOn, boolean_t filterOn, boolean_t zerofill) | |
| kern_return_t | snddriver_get_device_parms(port_t devicePort, boolean_t *speakerOn, boolean_t *filterOn, boolean_t *zerofill) | |
| kern_return_t | snddriver_set_volume(port_t devicePort, int leftVolume, int rightVolume) | |
| kern_return_t | snddriver_get_volume(port_t devicePort, int *leftVolume, int *rightVolume) | |
| kern_return_t | snddriver_set_ramp(port_t devicePort, int rampOn) |
| Stream Setup and Access
Configure stream transfer buffers |
| kern_return_t | snddriver_set_sndout_bufcount(port_t devicePort, port_t sndoutPort, int count) | |
| kern_return_t | snddriver_set_sndout_bufsize(port_t devicePort, port_t sndoutPort, int size) | |
| kern_return_t | snddriver_stream_ndma(port_t streamPort, int regionTag, int count) |
| Control and query a stream |
| kern_return_t | snddriver_stream_control(port_t streamPort, int regionTag, int control) | |
| kern_return_t | snddriver_stream_nsamples(port_t streamPort, int *byteCount) |
| Configure a sound stream |
| kern_return_t | snddriver_stream_setup(port_t devicePort, port_t ownerPort, int dataPath, int sampleCount, int sampleSize, int lowWater, int highWater, int *protocol, port_t *streamPort) |
| Send data to and retrieve data fom a stream |
| kern_return_t | snddriver_stream_start_writing(port_t streamPort, void *data, int sampleCount, int regionTag, boolean_t preempt, boolean_t deallocateWhenDone, boolean_t msgStarted, boolean_t msgCompleted, boolean_t msgAborted, boolean_t msgPaused, boolean_t msgResumed, boolean_t msgUnderrun, port_t replyPort) | |
| kern_return_t | snddriver_stream_start_reading(port_t streamPort, char *filename, int sampleCount, int regionTag, boolean_t msgStarted, boolean_t msgCompleted, boolean_t msgAborted, boolean_t msgPaused, boolean_t msgResumed, boolean_t msgOverrun, port_t replyPort) |