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>
106 lines
2.2 KiB
C++
106 lines
2.2 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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#pragma once
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#include <stdint.h>
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#include <string>
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namespace Util
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{
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using Hash = uint64_t;
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class Hasher
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{
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public:
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explicit Hasher(Hash h_)
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: h(h_)
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{
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}
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Hasher() = default;
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template <typename T>
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inline void data(const T *data_, size_t size)
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{
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size /= sizeof(*data_);
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for (size_t i = 0; i < size; i++)
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h = (h * 0x100000001b3ull) ^ data_[i];
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}
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inline void u32(uint32_t value)
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{
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h = (h * 0x100000001b3ull) ^ value;
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}
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inline void s32(int32_t value)
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{
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u32(uint32_t(value));
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}
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inline void f32(float value)
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{
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union
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{
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float f32;
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uint32_t u32;
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} u;
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u.f32 = value;
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u32(u.u32);
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}
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inline void u64(uint64_t value)
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{
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u32(value & 0xffffffffu);
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u32(value >> 32);
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}
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template <typename T>
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inline void pointer(T *ptr)
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{
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u64(reinterpret_cast<uintptr_t>(ptr));
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}
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inline void string(const char *str)
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{
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char c;
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u32(0xff);
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while ((c = *str++) != '\0')
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u32(uint8_t(c));
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}
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inline void string(const std::string &str)
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{
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u32(0xff);
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for (auto &c : str)
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u32(uint8_t(c));
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}
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inline Hash get() const
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{
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return h;
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}
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private:
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Hash h = 0xcbf29ce484222325ull;
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};
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}
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