From a447205729332ca11165ea60524e2e48d9b4f97e Mon Sep 17 00:00:00 2001
From: Pavel Rybalko <pavel@parity.io>
Date: Thu, 27 Jul 2023 03:04:59 -0700
Subject: [PATCH] fix png compression setting (#669)

---
 Cargo.lock        | 12 ++++++------
 cli/Cargo.toml    |  2 +-
 cli/src/source.rs |  4 ++--
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index dcd55dc28..473fcc0b3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3504,9 +3504,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.103"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d03b412469450d4404fe8499a268edd7f8b79fecb074b0d812ad64ca21f4031b"
+checksum = "076066c5f1078eac5b722a31827a8832fe108bed65dfa75e233c89f8206e976c"
 dependencies = [
  "itoa",
  "ryu",
@@ -4273,18 +4273,18 @@ checksum = "95059e91184749cb66be6dc994f67f182b6d897cb3df74a5bf66b5e709295fd8"
 
 [[package]]
 name = "thiserror"
-version = "1.0.43"
+version = "1.0.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a35fc5b8971143ca348fa6df4f024d4d55264f3468c71ad1c2f365b0a4d58c42"
+checksum = "611040a08a0439f8248d1990b111c95baa9c704c805fa1f62104b39655fd7f90"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.43"
+version = "1.0.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "463fe12d7993d3b327787537ce8dd4dfa058de32fc2b195ef3cde03dc4771e8f"
+checksum = "090198534930841fab3a5d1bb637cde49e339654e606195f8d9c76eeb081dc96"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index 2969ab523..f0170ea18 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -35,7 +35,7 @@ serde_json = "1.0"
 octocrab = "0.19.0"
 tokio = { version = "1", features = ["full"] }
 reqwest = { version = "0.11", features = ["json", "blocking"]}
-png = "0.17.5"
+png = "0.17.8"
 blake2-rfc = "0.2.18"
 # Hash table which preserves insertion order
 indexmap = {version="1", features=["serde"]}
diff --git a/cli/src/source.rs b/cli/src/source.rs
index 418788e78..4559f99bb 100644
--- a/cli/src/source.rs
+++ b/cli/src/source.rs
@@ -4,7 +4,6 @@ use std::io::BufWriter;
 use std::path::Path;
 
 use anyhow::Result;
-use png::Encoder;
 use serde::{Deserialize, Serialize};
 use sp_core::H256;
 use tempfile::tempdir;
@@ -29,7 +28,7 @@ pub(crate) fn save_source_info(path: &Path, source: &Source) -> Result<()> {
     let out_path = tmp_dir.path().join("qr.apng");
     let file = File::create(&out_path).unwrap();
     let w = &mut BufWriter::new(file);
-    let mut encoder = Encoder::new(w, in_info.width, in_info.height);
+    let mut encoder = png::Encoder::new(w, in_info.width, in_info.height);
     encoder.set_color(in_info.color_type);
     encoder.set_depth(in_info.bit_depth);
     if let Some(palette) = in_info.palette.clone() {
@@ -42,6 +41,7 @@ pub(crate) fn save_source_info(path: &Path, source: &Source) -> Result<()> {
         encoder.set_frame_delay(frame.delay_num, frame.delay_den)?;
     }
     encoder.add_ztxt_chunk(SOURCE.to_string(), serde_json::to_string(source)?)?;
+    encoder.set_compression(png::Compression::Best);
 
     let mut writer = encoder.write_header().unwrap();