ao_device

declared in "ao/ao.h";

This structure holds all of the data for an open device.

typedef struct { int type; /* live output or file output? */ int driver_id; ao_functions *funcs; FILE *file; /* File for output if this is a file driver */ int client_byte_format; int machine_byte_format; int driver_byte_format; char *swap_buffer; int swap_buffer_size; /* Bytes allocated to swap_buffer */ void *internal; /* Pointer to driver-specific data */ } ao_device;

Relevant Struct Members

type

The output type of the driver:

• AO_TYPE_LIVE - Live output.
• AO_TYPE_FILE - File output.

driver_id

The ID number for the driver used with this device.

funcs

Function table for the driver associated with this device.

client_byte_format

The byte format (use constants from ao_sample_format) of samples provided by the client to ao_play().

machine_byte_format

The native byte format of the computer. Will be either AO_FMT_BIG or AO_FMT_LITTLE.

driver_byte_format

The byte format of samples requested by the driver.

swap_buffer

Scratch buffer used to swap the byte order of samples. Only allocated if client_byte_format and driver_byte_format correspond to different byte orders, otherwise set to NULL