STRUCT SOF_IPC4_MIXER_UNDERRUN_EVENT_DATA(9)

💅 struct sof_ipc4_mixer_underrun_event_data(9)

okay bestie, welcome to the Kernel API Manual ✨ — this page is literally about struct sof_ipc4_mixer_underrun_event_data, which is the mixer underrun event payload. yeah. that's the whole vibe. it's giving "small struct, big responsibilities" 🫶

✨ NAME

struct sof_ipc4_mixer_underrun_event_data — the mixer underrun event payload, no cap 🎀

🦋 SYNOPSIS

struct sof_ipc4_mixer_underrun_event_data {
    uint32_t eos_flag;
    uint32_t data_mixed;
    uint32_t expected_data_mixed;
 };

iconic. three little uint32_t fields just vibing in there 👑

🎀 Members

• eos_flag — this one's the EndOfStream indicator 💀 like it literally indicates EndOfStream. that's it. that's the field.
• data_mixed — the data processed by the module, measured in bytes 🌸 so you know exactly how much got mixed.
• expected_data_mixed — the data you expected to get processed, also in bytes 🧚 basically the "how much did we think was gonna get mixed" number, so you can compare it against data_mixed and have a whole moment about it 😭

🌈 SEE ALSO

• the kernel file ./include/sound/sof/ipc4/header.h 📁 (yes, go look at it, iykyk)
• struct sof_ipc4_msg(9)
• struct sof_ipc4_tuple(9)
• struct sof_ipc4_process_data_error_event_data(9)
• union sof_ipc4_resource_event_data(9)
• struct sof_ipc4_notify_module_data(9)

all of these are fr fr your friends, go say hi 💖

ngl bestie, this is the October 2026 edition, living in ./include/sound/sof/ipc4, straight out of the Kernel API Manual — slay 💅✨ go forth and mix responsibly 🎀