From f47d7c92b8445b72bf15eef2da03916592558dfa Mon Sep 17 00:00:00 2001
From: ryan <ryan@distrust.co>
Date: Thu, 1 Feb 2024 22:29:09 -0500
Subject: [PATCH] keyfork-qrcode: enforce use of MPG1 video streams

---
 crates/qrcode/keyfork-qrcode/src/lib.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/crates/qrcode/keyfork-qrcode/src/lib.rs b/crates/qrcode/keyfork-qrcode/src/lib.rs
index 704d47e..3edbd57 100644
--- a/crates/qrcode/keyfork-qrcode/src/lib.rs
+++ b/crates/qrcode/keyfork-qrcode/src/lib.rs
@@ -9,6 +9,8 @@ use std::{
 use v4l::{
     buffer::Type,
     io::{userptr::Stream, traits::CaptureStream},
+    video::Capture,
+    FourCC,
     Device,
 };
 
@@ -100,6 +102,9 @@ pub fn qrencode(
 #[cfg(feature = "decode-backend-rqrr")]
 pub fn scan_camera(timeout: Duration, index: usize) -> Result<Option<String>, QRCodeScanError> {
     let device = Device::new(index)?;
+    let mut fmt = device.format().expect("Failed to read format");
+    fmt.fourcc = FourCC::new(b"MPG1");
+    device.set_format(&fmt)?;
     let mut stream = Stream::with_buffers(&device, Type::VideoCapture, 4)?;
     let start = SystemTime::now();
 
@@ -128,6 +133,9 @@ pub fn scan_camera(timeout: Duration, index: usize) -> Result<Option<String>, QR
 #[cfg(feature = "decode-backend-zbar")]
 pub fn scan_camera(timeout: Duration, index: usize) -> Result<Option<String>, QRCodeScanError> {
     let device = Device::new(index)?;
+    let mut fmt = device.format().expect("Failed to read format");
+    fmt.fourcc = FourCC::new(b"MPG1");
+    device.set_format(&fmt)?;
     let mut stream = Stream::with_buffers(&device, Type::VideoCapture, 4)?;
     let start = SystemTime::now();
     let mut scanner = keyfork_zbar::image_scanner::ImageScanner::new();