params_channels(9)

✨ NAME ✨

params_channels — get the number of channels from the hw params. welcome to the params_channels(9) page in the Kernel API Manual, bestie 💖 it's giving “tiny helper, very important audio vibes” and we are seated.

🎀 SYNOPSIS 🎀

unsigned int params_channels (const struct snd_pcm_hw_params *p );

🌸 ARGUMENTS 🌸

• p — hw params. that's the one and only argument, no cap 🫶

💅 RETURN 💅

the number of channels — that's the return value, periodt ✨ the synopsis says unsigned int, so that's the type you're getting back 💜

🦋 SEE ALSO 🦋

okay bestie, this is a whole group chat of related functions — every single one is here, we did not leave anyone on read 💅

• Kernel file ./include/sound/pcm.h
• snd_pcm_stream_linked(9)
• snd_pcm_stream_lock_irqsave(9)
• snd_pcm_stream_lock_irqsave_nested(9)
• snd_pcm_group_for_each_entry(9)
• snd_pcm_running(9)
• __snd_pcm_set_state(9)
• bytes_to_samples(9)
• bytes_to_frames(9)
• samples_to_bytes(9)
• frames_to_bytes(9)
• frame_aligned(9)
• snd_pcm_lib_buffer_bytes(9)
• snd_pcm_lib_period_bytes(9)
• snd_pcm_playback_avail(9)
• snd_pcm_capture_avail(9)
• snd_pcm_playback_hw_avail(9)
• snd_pcm_capture_hw_avail(9)
• snd_pcm_playback_ready(9)
• snd_pcm_capture_ready(9)
• snd_pcm_playback_data(9)
• snd_pcm_playback_empty(9)
• snd_pcm_capture_empty(9)
• snd_pcm_trigger_done(9)
• params_rate(9)
• params_period_size(9)
• params_periods(9)
• params_buffer_size(9)
• params_buffer_bytes(9)
• snd_pcm_hw_constraint_single(9)
• snd_pcm_format_cpu_endian(9)
• snd_pcm_set_sync(9)
• snd_pcm_set_runtime_buffer(9)
• snd_pcm_gettime(9)
• snd_pcm_set_fixed_buffer(9)
• snd_pcm_set_fixed_buffer_all(9)
• snd_pcm_sgbuf_get_addr(9)
• snd_pcm_sgbuf_get_chunk_size(9)
• snd_pcm_limit_isa_dma_size(9)
• snd_pcm_direction_name(9)
• snd_pcm_stream_str(9)
• snd_pcm_chmap_substream(9)
• pcm_format_to_bits(9)
• pcm_for_each_format(9)

that's the whole page, bestie! source/version: ./include/sound • date: October 2026 — mwah 💋🎀