STRUCT SOF_IPC4_PIPELINE(9)

🦋 struct sof_ipc4_pipeline(9) 🦋

okay so this little icon is straight out of the Kernel API Manual and it's lowkey the blueprint for a whole audio pipeline. bestie, this is struct sof_ipc4_pipeline and it's literally the config data for a pipeline. no cap, it's giving main character energy in ipc4-topology.h. 💅

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✨ NAME ✨

struct sof_ipc4_pipeline — pipeline config data. that's the whole vibe. short, sweet, slays. 🎀

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🌸 SYNOPSIS 🌸

struct sof_ipc4_pipeline {
    uint32_t priority;
    uint32_t lp_mode;
    uint32_t mem_usage;
    uint32_t core_id;
    int state;
    bool use_chain_dma;
    struct sof_ipc4_msg msg;
    bool skip_during_fe_trigger;
    bool direction_valid;
    u32 direction;
};

look at her. ten fields. not one of them wasted. 🔥

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💖 Members 💖

time for the vibe check on every single field, bestie — don't skip a single one, they all matter:

• priority — priority of this pipeline 👑 (yes, she has a rank, respect it)
• lp_mode — low power mode 😴 (naps are self-care)
• mem_usage — memory usage 🍓
• core_id — target core for the pipeline 🧚 (which core is catching this work)
• state — pipeline state 🌈 (her current mood, essentially)
• use_chain_dma — flag to indicate if the firmware shall use chained DMA 💀 (firmware's call, not mine)
• msg — message structure for pipeline ✉️ (type struct sof_ipc4_msg, very official)
• skip_during_fe_trigger — skip triggering this pipeline during the FE DAI trigger 🙈 (she's sitting this one out, and that's valid)
• direction_valid — flag indicating if valid direction is set in topology ⭐ (basic gatekeeping: is the direction real or not)
• direction — pipeline direction set in topology if direction_valid is true 🦋 (only trusted when the flag above says so, iykyk)

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🔥 SEE ALSO 🔥

the whole friend group, in the kernel file ./sound/soc/sof/ipc4-topology.h struct:

• ipc4_pipeline_set_state_data(9)
• struct sof_ipc4_pin_format(9)
• struct sof_ipc4_available_audio_format(9)
• struct sof_copier_gateway_cfg(9)
• struct sof_ipc4_copier_data(9)
• struct sof_ipc4_gtw_attributes(9)
• struct sof_ipc4_dma_device_stream_ch_map(9)
• struct sof_ipc4_dma_stream_ch_map(9)
• struct sof_ipc4_dma_config(9)
• struct sof_ipc4_dma_config_tlv(9)
• struct sof_ipc4_copier(9)
• struct sof_ipc4_ctrl_value_chan(9)
• struct sof_ipc4_control_data(9)
• struct sof_ipc4_control_msg_payload(9)
• struct sof_ipc4_gain_params(9)
• struct sof_ipc4_gain_data(9)
• struct sof_ipc4_gain(9)
• struct sof_ipc4_mixer(9)
• struct sof_ipc4_src(9)
• struct sof_ipc4_asrc(9)
• struct sof_ipc4_base_module_cfg_ext(9)
• struct sof_ipc4_process(9)

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ngl, if you're touching SOF IPC4 pipelines you're gonna be living in these pages. go read them, bestie, they ate. 💜

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and that's the whole page, periodt. it ships from ./sound/soc/sof and it's dated October 2026 — shoutout to the source, mwah. 🫶💅✨