From 80b86e9be7936c0d0245795fe114bd391961c95f Mon Sep 17 00:00:00 2001
From: Pranav Sharma <itsmepranav223@gmail.com>
Date: Mon, 9 Mar 2026 07:43:41 +0000
Subject: [PATCH] feat(rust): add --codec isdb CLI flag for ISDB/ARIB subtitle
 selection

Extends CCXCodec enum with Isdb variant and wires it to
Codec::IsdbCc in the demuxer config, enabling users to
explicitly select ISDB/ARIB subtitle streams via:
  --codec isdb
  --no-codec isdb

The underlying C decoder (isdbsub_decode) and Rust
Codec::IsdbCc were already present but had no CLI
entry point. This change completes the wiring.

Relevant for Japanese broadcast (ARIB B-24) support.
---
 src/rust/src/args.rs   | 2 ++
 src/rust/src/parser.rs | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/src/rust/src/args.rs b/src/rust/src/args.rs
index ec394919e..07f23dc64 100644
--- a/src/rust/src/args.rs
+++ b/src/rust/src/args.rs
@@ -754,6 +754,7 @@ pub struct Args {
     ///     nothing is selected and no subtitle is generated
     /// --codec teletext
     ///     select the teletext subtitle from elementary stream
+    /// --codec isdb      select ISDB/ARIB subtitle stream (Japanese broadcast)
     #[arg(long, verbatim_doc_comment, value_name="value", help_heading=OUTPUT_AFFECTING_CODEC)]
     pub codec: Option<CCXCodec>,
     /// --no-codec dvbsub
@@ -977,6 +978,7 @@ pub struct Args {
 pub enum CCXCodec {
     Dvbsub,
     Teletext,
+    Isdb,
 }
 
 #[derive(Display, Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, ValueEnum)]
diff --git a/src/rust/src/parser.rs b/src/rust/src/parser.rs
index c31422e17..07deb0d58 100644
--- a/src/rust/src/parser.rs
+++ b/src/rust/src/parser.rs
@@ -679,6 +679,9 @@ impl OptionsExt for Options {
                 CCXCodec::Dvbsub => {
                     self.demux_cfg.codec = SelectCodec::Some(Codec::Dvb);
                 }
+                CCXCodec::Isdb => {
+                    self.demux_cfg.codec = SelectCodec::Some(Codec::IsdbCc);
+                }
             }
         }
 
@@ -690,6 +693,9 @@ impl OptionsExt for Options {
                 CCXCodec::Teletext => {
                     self.demux_cfg.nocodec = SelectCodec::Some(Codec::Teletext);
                 }
+                CCXCodec::Isdb => {
+                    self.demux_cfg.nocodec = SelectCodec::Some(Codec::IsdbCc);
+                }
             }
         }