Maxim Krentovskiy mkrentovskiy

TC358743 Radxa Zero 3W Notes

Audio

tc358743-audio.dts overlay allows audio to be captured. I2S audio is a 48kHz sampling rate at 32 bit/sample.

Audio Formats

According to gstreamer, the following caps are supported. This seems to indicate that up to 8-channel audio (likely 7.1) capture is supported by the tc35874x driver. I haven't tested more than stereo, and haven't made sure it isn't just mono.

Little GPU ffmpeg NVENC encoding benchmarks

icy_meta.md contains the basics of metadata within the stream. The document where I got this information from (http://www.smackfu.com/stuff/programming/shoutcast.html) is not available any more.
spec.md is a copy of this gist https://gist.github.com/ePirat/adc3b8ba00d85b7e3870 just to prevent the informtation from disappearing. You may find the discussion beneath the original gist interresting as well.
icy.rb is the most simple icy metadata parser written in Ruby.
Some information can be found here: https://cast.readme.io/docs/icy

Gstreamer Pipeline Samples

Table of Contents:

Gstreamer Pipeline Samples
- Tips for Debug
- Video
  - display test video
  - record to file
record and display at the same time(queue)

	#include <sys/mman.h>
	#include <sys/stat.h>
	#include <erl_nif.h>
	#include <unistd.h>
	#include <stdint.h>
	#include <string.h>
	#include <fcntl.h>


	static ErlNifResourceType* shmem_resource;

	/*This is sketch for internal temperature sensor ESP32 CPU.
	* The main ideas are:
	* to ignore 53.3 (128 before converting to Celsius);
	* WiFi must be connected, if else you'll get 53.3 (128) only.
	*
	* Tested in AI Thinker ESP32 Cam module. Can be add to standard camera example in Arduino.
	* While ESP32 Cam module was idle - the temperature was around 47*C.
	* While camera video stream was on - the temperature was rising to around 57*C.
	* See temperature values in serial monitor at 115200.
	* Best regards, Anton S

	sudo apt-get update
	sudo apt-get install -y python3 python3-dev python3-pip gcc
	sudo apt-get install -y python3-opencv
	sudo apt-get install -y python3-numpy
	sudo apt-get install git
	sudo apt-get install wget
	sudo apt-get install python3-setuptools
	wget https://github.com/rockchip-linux/rknpu2/raw/master/runtime/RK356X/Linux/librknn_api/aarch64/librknnrt.so
	sudo mv librknnrt.so /usr/lib/librknnrt.so
	git clone https://github.com/rockchip-linux/rknn-toolkit2.git

	#!/bin/bash

	set -e

	system_set_hostname "$HOSTNAME"

	apt update && apt upgrade -y && apt install -y curl wget net-tools traceroute jq
	# Generate files
	mkdir -p /etc/victoriametrics/single
	mkdir -p /var/lib/victoria-metrics-data