bczhc

//! Use command:
//!
//! ```shell
//! freq=88.6; airspy_rx -f $freq -a 10000000 -t 0 -h 10 -b 0 -r - \
//!   | ~/code/radio-and-ham-tools/target/release/demo5 \
//!   | ffmpeg -f f32le -ch_layout mono -ar 250000 -i pipe:0 \
//!   -af "aemphasis=type=50fm:mode=reproduction,lowpass=f=15000:p=2,bandreject=f=19000:width_type=h:width=50" \
//!   -ch_layout mono -ar 48000 -c:a pcm_f32le -f f32le - \
//!   | pacat --format=float32le --channels=1 --rate=48000
//! ```

bczhc

tags	errata electronics
created	2026-09-14

排版错误与数值错误。有一些是翻译版引入，有一些是原书中就有的错误。

书籍为2026年3月第1版第4次印刷。ISBN 978-7-111-72784-2

bczhc

// ==UserScript==
// @name         Gemini Save to TXT
// @namespace    https://github.com/bczhc
// @version      2.0
// @description  Extract current Gemini conversation and download as .txt
// @author       bczhc
// @match        https://gemini.google.com/app/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=gemini.google.com
// @grant        GM_registerMenuCommand
// @grant        GM_notification

bczhc

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <stdint.h>

bczhc

[package]
name = "wine"
version = "0.1.0"
edition = "2021"

[dependencies]
wgpu = { git = "https://github.com/gfx-rs/wgpu", rev = "0ca8ba04acbca7caa964d64492da0e831d9da35c" }
winit = "0.30"
pollster = "1.0"
env_logger = "0.11"

bczhc

           PID: 423290 (java)
           UID: 1000 (bczhc)
           GID: 1000 (bczhc)
        Signal: 11 (SEGV)
     Timestamp: Thu 2026-04-09 11:52:11 CST (2min 45s ago)
  Command Line: /usr/lib/jvm/java-26-openjdk/bin/java -Xss8m -Xmx13901m -Dfile.encoding=UTF-8 -Dstdout.encoding=UTF-8 -Dstderr.encoding=UTF-8 -Djava.rmi.server.useCodebaseOnly=true -Dcom.sun.jndi.rmi.object.trustURLCodebase=false -Dcom.sun.jndi.cosnaming.object.trustURLCodebase=false -Dlog4j2.formatMsgNoLookups=true -Dlog4j.configurationFile=/mnt/nvme/mc-game/mc/.minecraft/versions/26.2-snapshot-1/log4j2.xml -Dminecraft.client.jar=/mnt/nvme/mc-game/mc/.minecraft/versions/26.2-snapshot-1/26.2-snapshot-1.jar -Duser.home=/mnt/nvme/mc-game/mc -Djava.net.useSystemProxiestrue -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions -XX:+UseG1GC -XX:G1MixedGCCountTarget=5 -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32m -XX:-OmitStackTraceInFastThrow -XX:-DontCompileHugeMethods -XX:MaxNodeLim

bczhc

                                      @ 24   java.lang.invoke.Invokers::checkCustomized (23 bytes)   force inline by annotation
                                        @ 1   java.lang.invoke.MethodHandleImpl::isCompileConstant (2 bytes)   inline
                                      @ 33   java.lang.invoke.LambdaForm$MH/0x0000000097d9dc00::invoke (54 bytes)   force inline by annotation
                                        @ 21   java.lang.invoke.LambdaForm$MH/0x000000009717dc00::invoke (37 bytes)   force inline by annotation
                                          @ 15   java.lang.invoke.LambdaForm$DMH/0x0000000097155800::invokeStatic (14 bytes)   force inline by annotation
                                            @ 1   java.lang.invoke.DirectMethodHandle::internalMemberName (8 bytes)   force inline by annotation
                                            @ 10   java.lang.foreign.MemorySegment::ofAddress (6 bytes)   inline
                                              @ 2   jdk.internal.foreign.Segme

bczhc

                                      @ 24   java.lang.invoke.Invokers::checkCustomized (23 bytes)   force inline by annotation
                                        @ 1   java.lang.invoke.MethodHandleImpl::isCompileConstant (2 bytes)   inline
                                      @ 33   java.lang.invoke.LambdaForm$MH/0x0000000097d9dc00::invoke (54 bytes)   force inline by annotation
                                        @ 21   java.lang.invoke.LambdaForm$MH/0x000000009717dc00::invoke (37 bytes)   force inline by annotation
                                          @ 15   java.lang.invoke.LambdaForm$DMH/0x0000000097155800::invokeStatic (14 bytes)   force inline by annotation
                                            @ 1   java.lang.invoke.DirectMethodHandle::internalMemberName (8 bytes)   force inline by annotation
                                            @ 10   java.lang.foreign.MemorySegment::ofAddress (6 bytes)   inline
                                              @ 2   jdk.internal.foreign.Segme

bczhc

From 2d9d26b81bb1b3eec9c33b52bc9a2a8c7dd6fb8b Mon Sep 17 00:00:00 2001
From: Loukas Agorgianitis <loukas@agorgianitis.com>
Date: Mon, 13 Jan 2025 21:43:56 +0200
Subject: [PATCH] render: make transformations in geometry space

Previously, the rendering process made transformations in logical
geometry space. When using fractional scaling, this process scaled
the transformations to the logical geometry space and back using the
fractional scale, which led to floating point rounding errors. This,
produced non pixel perfect / slightly blurry images.

bczhc

#![feature(file_buffered)]

use clap::Parser;
use serde::Serialize;
use std::fs::File;
use std::path::{Path, PathBuf};

#[derive(Parser)]
struct Args {
    path: PathBuf,