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>
54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
// Copyright (c) 2025 Hans-Kristian Arntzen
|
|
// SPDX-License-Identifier: MIT
|
|
#pragma once
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <stdio.h>
|
|
#include <stddef.h>
|
|
|
|
class YUV4MPEGFile
|
|
{
|
|
public:
|
|
bool open_read(const std::string &path);
|
|
bool open_write(const std::string &path, const std::string ¶ms);
|
|
const std::string &get_params() const;
|
|
|
|
int get_width() const;
|
|
int get_height() const;
|
|
|
|
bool begin_frame();
|
|
bool write(const void *pixels, size_t size);
|
|
bool read(void *pixels, size_t size);
|
|
|
|
enum class Format
|
|
{
|
|
YUV420P,
|
|
YUV444P,
|
|
YUV420P16,
|
|
YUV444P16
|
|
};
|
|
|
|
Format get_format() const;
|
|
bool is_full_range() const;
|
|
|
|
static int format_to_bytes_per_component(Format format);
|
|
static bool format_has_subsampling(Format format);
|
|
|
|
int get_frame_rate_num() const;
|
|
int get_frame_rate_den() const;
|
|
|
|
private:
|
|
enum class Mode { Read, Write };
|
|
bool open(const std::string &path, Mode mode);
|
|
struct FileDeleter { void operator()(FILE *f) { if (f) fclose(f); } };
|
|
std::unique_ptr<FILE, FileDeleter> file;
|
|
int width = 0, height = 0;
|
|
int frame_rate_num = 60, frame_rate_den = 1;
|
|
std::string params;
|
|
Mode mode = {};
|
|
Format format = {};
|
|
bool full_range = false;
|
|
float unorm_scale = 1.0f;
|
|
};
|