Maestro Audio Framework v 1.7
NXP Semiconductors
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audio sink element's data structures More...
#include <audio_sink.h>
Data Fields | |
int32_t(* | change_state )(struct _StreamElement *, PipelineState) |
Change state function pointer. | |
int32_t(* | set_property )(struct _StreamElement *, uint16_t prop, uint32_t val) |
Set property function pointer. | |
int32_t(* | get_property )(struct _StreamElement *, uint16_t prop, uint32_t *val_ptr) |
Get property function pointer. | |
void * | parent |
Parent pointer. | |
int8_t | key |
Key. | |
int8_t | depth |
Depth. | |
PipelineState | state |
Pipeline state. | |
StreamElementType | type |
Element type. | |
PadSrc | src_pad [MAX_NUM_PADS] |
Source pads. | |
PadSink | sink_pad [MAX_NUM_PADS] |
Sink pads. | |
struct _StreamElement * | sibling |
Sibling pointer. | |
uint32_t | chunk_size |
chunk size | |
uint32_t | bits_per_sample |
bits per sample | |
uint32_t | num_channels |
number of audio channels | |
uint32_t | sample_rate |
sample rate per second | |
uint32_t | format |
PCM, endian, word length. | |
int | volume |
Output volume. | |
int32_t | error_element |
saved error type | |
uint32_t | time_reported_msec |
last elapsed time reported to application | |
uint32_t | time_report_diff |
Amount of time that should have passed before sending another message. | |
uint32_t | elapsed_time_msec |
elapsed time in million seconds | |
uint64_t | elapsed_time_usec |
elapsed time In micro seconds | |
uint32_t | device_driver_type |
device driver type specific | |
uint32_t | device_name |
This is provided just in case an enumeration is done by ALSA or OSS probably before opening the device. | |
char | device_string_name [MAX_DEVICE_NAME_LENGTH] |
Device string name. | |
void * | device_info |
sink device infomations about sink device like SSI, ALSA, etc | |
const AudioSinkPadDeviceIOFuncType * | device_ptr |
device operations provided by sink device | |
uint32_t | last_time_sample_rate |
Last time sample rate. | |
bool | buffer_use_chunk_size |
Use the configured chunk size for buffer sizing. | |
uint32_t | last_num_channels |
last time number of audio channels | |
uint32_t | last_chunk_size |
last time chunk size | |
bool | device_started |
uint8_t | codec_num_channels |
Number of channels for HW codec. | |
uint8_t | codec_bits_per_sample |
Sample width for HW codec. | |
ElementHandle | refData_element |
Element handle where reference audio data will be sent (VoiceSeeker) | |
EXT_AUDIOELEMENT_DESC_T | appFunctions |
Function defined in the application. | |
This data structure is created by create_element, initialized by audiosink_init_element
bool ElementAudioSink::device_started |
Indicates whether the device was started