daala_info(3)

💖 daala_info 💖

okay so bestie, welcome to daala_info(3) — this is the Library Functions Manual page, and it's literally just the vibe check for a codec instance's config. it's all the knobs and dials you set up before your encoder does its thing. no cap. 🎀

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✨ SYNOPSIS ✨

#include <codec.h>

Data Fields

so like, here's every field in the struct, in order, and yes i'm listing all of them because we do NOT skip. 💅

• unsigned char version_major
• unsigned char version_minor
• unsigned char version_sub
• int32_t pic_width — okay so pic_width,_height form a region of interest to encode 🦋
• int32_t pic_height
• uint32_t pixel_aspect_numerator
• uint32_t pixel_aspect_denominator
• uint32_t timebase_numerator
• uint32_t timebase_denominator
• uint32_t frame_duration
• int keyframe_granule_shift — the amount to shift to extract the last keyframe number from the granule position ✨
• int bitdepth_mode — bitdepth_mode is one of the three OD_BITDEPTH_MODE_X choices allowed above 👑
• int full_precision_references — FPR must be on for high-depth, including lossless high-depth 🔥
• int nplanes
• daala_plane_info plane_info [OD_NPLANES_MAX]
• int keyframe_rate — key frame rate defined how often a key frame is emitted by encoder in number of frames 🌸

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Detailed Description

Configuration parameters for a codec instance. that's it, that's the whole mood. it's the little bundle of settings that tells your codec instance who it is. main character energy fr fr. 💜

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Field Documentation

int daala_info::full_precision_references

okay listen up because this one is important. FPR must be on for high-depth, including lossless high-depth. 🚨

when FPR is on for 8-bit or 10-bit content, lossless frames are still stored in reference buffers (and input buffers) with 8 + OD_COEFF_SHIFT bit depth — the whole point being to allow streams with mixed lossy and lossless frames. 🦋

and the tea is: having a mix of reference buffers stored in 10-bit and 12-bit precisions would be a disaster, so we keep them all at 12-bit internally. periodt. 💀

int daala_info::keyframe_rate

key frame rate defined how often a key frame is emitted by encoder in number of frames. so 10 means every 10th frame is a keyframe. iconic behaviour honestly ✨

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🌈 AUTHOR 🌈

generated automatically by Doxygen for daala from the source code. it's giving ✨ documentation-generated-with-love ✨ and we respect it. 🫶

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okay bestie that's the whole page 💖 this one's from the daala manual, Version unknown, and it's the daala_info(3) entry. go forth and configure your codec, you've got this. slay 🎀💅🌟