enricobuehler
4c3b11445c
Phase 0 of design/pyrowave-codec-plan.md — the opt-in wired-LAN ultra-low- latency codec. Vendored at upstream 509e4f88 (API 0.4.0, Granite 44362775, volk + vulkan-headers pins in PUNKTFUNK-VENDOR.txt), pruned to the 6.6 MB the standalone no-renderer build needs; scripts/vendor-pyrowave.sh reproduces the tree (a pin bump is protocol-affecting, plan §4.2). build.rs drives the wrapper CMakeLists (static archives incl. a static C-API lib upstream only ships shared) + bindgen over pyrowave.h; Linux and Windows only, empty stub elsewhere (Apple gets a native Metal port, §4.7). Offline-safe by construction: no network, no system lib, vendored Vulkan headers — same model as the opus dep (flatpak builder has no network). Phase-0 validation on .21 (RTX 5070 Ti, driver 610.43.03): - upstream pyrowave-c-test + interop test (incl. dmabuf/DRM-modifier Vulkan<->Vulkan) pass, from the pristine AND the pruned tree - GPU kernel times at ~1.6 bpp noise: encode/decode 0.090/0.042 ms @800p, 0.146/0.067 @1080p, 0.226/0.103 @1440p, 0.477/0.201 @4K — order of magnitude under NVENC's 1-2 ms retrieve, CBR lands within ~100 B of target - cargo test -p pyrowave-sys green (static link + API-version pin check) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
/* Copyright (c) 2017-2026 Hans-Kristian Arntzen
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "aligned_alloc.hpp"
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef _WIN32
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#include <malloc.h>
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#endif
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namespace Util
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{
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void *memalign_alloc(size_t boundary, size_t size)
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{
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#if defined(_WIN32)
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return _aligned_malloc(size, boundary);
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#elif defined(_ISOC11_SOURCE)
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return aligned_alloc(boundary, (size + boundary - 1) & ~(boundary - 1));
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#elif (_POSIX_C_SOURCE >= 200112L) || (_XOPEN_SOURCE >= 600)
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void *ptr = nullptr;
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if (posix_memalign(&ptr, boundary, size) < 0)
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return nullptr;
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return ptr;
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#else
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// Align stuff ourselves. Kinda ugly, but will work anywhere.
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void **place;
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uintptr_t addr = 0;
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void *ptr = malloc(boundary + size + sizeof(uintptr_t));
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if (ptr == nullptr)
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return nullptr;
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addr = ((uintptr_t)ptr + sizeof(uintptr_t) + boundary) & ~(boundary - 1);
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place = (void **) addr;
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place[-1] = ptr;
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return (void *) addr;
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#endif
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}
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void *memalign_calloc(size_t boundary, size_t size)
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{
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void *ret = memalign_alloc(boundary, size);
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if (ret)
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memset(ret, 0, size);
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return ret;
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}
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void memalign_free(void *ptr)
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{
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#if defined(_WIN32)
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_aligned_free(ptr);
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#elif !defined(_ISOC11_SOURCE) && !((_POSIX_C_SOURCE >= 200112L) || (_XOPEN_SOURCE >= 600))
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if (ptr != nullptr)
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{
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void **p = (void **) ptr;
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free(p[-1]);
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}
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#else
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free(ptr);
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#endif
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}
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}
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