GoogleCast
This component allows you to communicate with Chrome Cast dongles or smart TVs that support the Google Cast Protocol.
Using
Add these lines to your application componenent.mk file:
COMPONENT_DEPENDS += GoogleCast ENABLE_SSL := Bearssl
Add these lines to your application:
#include <Network/GoogleCast/Client.h>
Basic example:
#include <Network/GoogleCast/Client.h> GoogleCast::Client castClient; void gotIp(IpAddress ip, IpAddress mask, IpAddress gateway) { // connect directly to the IP of the devise castClient.connect(IpAddress("192.168.10.15")); castClient.onConnect([](bool success) { Serial.print(F("Client connect: ")); Serial.println(success ? "OK" : "FAIL"); if(success) { // Starting YouTube on the device castClient.receiver.launch(APPID_YOUTUBE); } }); }
Re-Generating C files from proto file
You can re-generate the C files from the proto file. This can be useful if you want to use a newer version of the Google Cast proto file. Make sure to compile it using nanopb. The re-generation can be done with the commands below:
cd $SMING_HOME/Libraries/GoogleCast/samples/basic
make python-requirements # should be executed once to download and install the required python packages
make rebuild-cast-proto
Protocol
There are multiple documents in internet that describe the Google Cast protocol and its inner workings. As a start one can take a look at the presentation and documents below.
App-Ids
List of current APP-IDS https://clients3.google.com/cast/chromecast/device/baseconfig
Individual app configurations are obtained from this url: https://clients3.google.com/cast/chromecast/device/app?a={appid}
Where {appid} is the id of the app, and the output of this is JSON in the format of a receiver app definition.
References
Used by
Google Cast Client Sample
SoC support
esp32
esp32c2
esp32c3
esp32s2
esp32s3
esp8266
host
rp2040