nal_h264_read_pps(9)

💅 nal_h264_read_pps(9) 💅

okay so bestie, welcome to the Kernel API Manual entry for nal_h264_read_pps — yes that's a mouthful, yes it's iconic, and yes i'm gonna walk you through it like we're texting at 2am 🫶

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✨ NAME ✨

nal_h264_read_pps — the girlie that reads a PPS NAL unit out of RBSP format. no cap, that's literally her whole job 💅

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🌸 SYNOPSIS 🌸

ssize_t nal_h264_read_pps (const struct device *dev , struct
nal_h264_pps *pps , void *src , size_t n );

look at her signature, she's serving ✨

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🎀 ARGUMENTS 🎀

• dev — the device pointer, aka the plug. it's a const struct device *, so hands off, don't go modifying her 🫶
• pps — the struct nal_h264_pps that gets filled up from the RBSP data. she's the empty cup, the data's the drink, iykyk 🥤
• src — the buffer holding the RBSP data. the source of truth, the main character honestly 👑
• n — size of src, in bytes. gotta know how much you're working with, periodt 📏

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🦋 DESCRIPTION 🦋

so what she does is: read the RBSP data out of src, and use it to fill in pps. that's it, that's the whole vibe check. lowkey simple, highkey essential 🔥

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⭐ RETURN ⭐

she returns the number of bytes read from src... or a negative error code if things went sideways 😭 so yeah, check that return value, bestie, don't just ignore her 💀

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💜 SEE ALSO 💜

• Kernel file ./drivers/media/platform/allegro-dvt/nal-h264.c — go read the source, it's giving lore 📖
• nal_h264_write_sps(9)
• nal_h264_read_sps(9)
• nal_h264_write_pps(9)
• nal_h264_write_filler(9)
• nal_h264_read_filler(9)

the whole NAL friend group, fr fr 🌈

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ok that's the whole page bestie, go forth and parse those PPS NAL units 💖✨

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mwah 💋 this has been nal_h264_read_pps(9) from ./drivers/media/platform/alleg..., dated October 2026, in the Kernel API Manual — slay, bye 👑🎀