other versions
- stretch 4.9.168-1
STRUCT SND_COMPR_TST(9) | Compress Offload | STRUCT SND_COMPR_TST(9) |
NAME¶
struct_snd_compr_tstamp - timestamp descriptorSYNOPSIS¶
struct snd_compr_tstamp { __u32 byte_offset; __u32 copied_total; __u32 pcm_frames; __u32 pcm_io_frames; __u32 sampling_rate; };
MEMBERS¶
byte_offsetByte offset in ring buffer to DSP
copied_total
Total number of bytes copied from/to ring buffer to/by
DSP
pcm_frames
Frames decoded or encoded by DSP. This field will evolve
by large steps and should only be used to monitor encoding/decoding progress.
It shall not be used for timing estimates.
pcm_io_frames
Frames rendered or received by DSP into a mixer or an
audio output/input. This field should be used for A/V sync or time
estimates.
sampling_rate
sampling rate of audio
COPYRIGHT¶
April 2019 | Kernel Hackers Manual 4.9. |