5 Commits

Author	SHA1	Message	Date
Niklas Haas	daef348574	avfilter/x86/f_ebur128: implement AVX peak calculation ... Stereo only, for simplicity. Slightly faster than the C code.	2025-06-21 17:28:39 +02:00
Niklas Haas	3b26b782ee	avfilter/f_ebur128: move peak detection to reusable DSP function ... True peak and sample peak share almost the same logic. Define this logic in a separate function for reusability, and so we can write SIMD versions.	2025-06-21 17:21:58 +02:00
Niklas Haas	53e03ec8af	avfilter/x86/f_ebur128: add x86 AVX implementation ... Processes two channels in parallel, using 128-bit XMM registers. In theory, we could go up to YMM registers to process 4 channels, but this is not a gain except for relatively high channel counts (e.g. 7.1), and also complicates the sample load/store operations considerably. I decided to only add an AVX variant, since the C code is not substantially slower enough to justify a separate function just for ancient CPUs.	2025-06-21 17:21:36 +02:00
Niklas Haas	deab15e76a	avfilter/f_ebur128: split off C implementation to separate function ... I decided to separate out the peak measurement loop to avoid bloating the signature, and since it's only conditionally used.	2025-06-21 17:19:50 +02:00
Niklas Haas	c7d2b0a7a1	avfilter/f_ebur128: move weights and cache to EBUR128DSPContext	2025-06-21 17:19:50 +02:00