q6asm_media...multi_ch_pcm(9)

👑 q6asm_media_format_block_multi_ch_pcm(9) — the kernel API manual, but make it make sense 💅

okay so bestie, this is a page straight out of the Kernel API Manual (yes, the (9) means it's a kernel thing, that's the section number, iykyk), and it's all about the function name that absolutely ate: q6asm_media_format_block_multi_ch_pcm. it's a long one, but she's iconic, periodt.

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✨ NAME ✨

q6asm_media_format_block_multi_ch_pcm — bestie, this one sets up your pcm configuration. that's the whole vibe. 🎀

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🌸 SYNOPSIS 🌸

here's the signature, exactly as she lives, no cap:

int q6asm_media_format_block_multi_ch_pcm (struct audio_client *ac ,
uint32_t stream_id , uint32_t rate , uint32_t channels , u8
channel_map[PCM_MAX_NUM_CHANNEL] , uint16_t bits_per_sample );

it returns an int, takes six things, and honestly? she's a lot of parameters but she's worth it. 🫶

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🦋 ARGUMENTS 🦋

okay, listen, each of these matters so we're going through all of them, no skipping, that's the rule:

• ac — the audio client pointer. your main character, basically. 🎤
• stream_id — the stream id. gotta know which stream you're on, obviously.
• rate — the audio sample rate. the tempo of the whole situation.
• channels — number of audio channels. more channels = more friends in the group chat.
• channel_map — channel map pointer. this is the one that tells everyone where they sit.
• bits_per_sample — bits per sample. exactly what it sounds like, bestie, don't overthink it. ✨

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💀 RETURN 💀

so what do you get back? it'll be a negative value on error, or zero on success.

lowkey important: negative = bad news 😭, zero = we slayed 💖. that's it, that's the whole return contract, don't get it twisted.

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🌈 SEE ALSO 🌈

the extended universe, fr fr — go read these, they're all siblings of this function:

the kernel file lives at ./sound/soc/qcom/qdsp6/q6asm.c and it's the whole source of truth, go look. 👀

• q6asm_unmap_memory_regions(9)
• q6asm_map_memory_regions(9)
• q6asm_audio_client_free(9)
• q6asm_get_session_id(9)
• q6asm_audio_client_alloc(9)
• q6asm_open_write(9)
• q6asm_run(9)
• q6asm_run_nowait(9)
• q6asm_enc_cfg_blk_pcm_format_support(9)
• q6asm_read(9)
• q6asm_open_read(9)
• q6asm_write_async(9)
• q6asm_cmd(9)
• q6asm_cmd_nowait(9)

like, the whole q6asm friend group showed up. obsessed. 🧚

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mwah 💜 that's the page! this one came from the ./sound/soc/qcom/qdsp6 corner of the kernel, dated October 2026, and yeah she's still signed q6asm_media...multi_ch_pcm(9) at the bottom like the queen she is. ok bye, go set up that pcm config bestie 💅✨