fix(mp4box): remove unwrap() in to_json() for Mp4Box implementation.

src/mp4box/avc1.rs

@@ -68,7 +68,7 @@ impl Mp4Box for Avc1Box {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {
@@ -200,7 +200,7 @@ impl Mp4Box for AvcCBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/co64.rs

@@ -34,7 +34,7 @@ impl Mp4Box for Co64Box {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/ctts.rs

@@ -40,7 +40,7 @@ impl Mp4Box for CttsBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/data.rs

@@ -37,7 +37,7 @@ impl Mp4Box for DataBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/dinf.rs

@@ -28,7 +28,7 @@ impl Mp4Box for DinfBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {
@@ -132,7 +132,7 @@ impl Mp4Box for DrefBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {
@@ -249,7 +249,7 @@ impl Mp4Box for UrlBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/edts.rs

@@ -37,7 +37,7 @@ impl Mp4Box for EdtsBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/elst.rs

@@ -48,7 +48,7 @@ impl Mp4Box for ElstBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/emsg.rs

@@ -49,7 +49,7 @@ impl Mp4Box for EmsgBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/ftyp.rs

@@ -31,7 +31,7 @@ impl Mp4Box for FtypBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/hdlr.rs

@@ -32,7 +32,7 @@ impl Mp4Box for HdlrBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/hev1.rs

@@ -68,7 +68,7 @@ impl Mp4Box for Hev1Box {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {
@@ -181,7 +181,7 @@ impl Mp4Box for HvcCBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/ilst.rs

@@ -37,7 +37,7 @@ impl Mp4Box for IlstBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/mdhd.rs

@@ -58,7 +58,7 @@ impl Mp4Box for MdhdBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/mdia.rs

@@ -31,7 +31,7 @@ impl Mp4Box for MdiaBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/mehd.rs

@@ -38,7 +38,7 @@ impl Mp4Box for MehdBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/meta.rs

@@ -57,7 +57,7 @@ impl Mp4Box for MetaBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/mfhd.rs

@@ -41,7 +41,7 @@ impl Mp4Box for MfhdBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/minf.rs

@@ -45,7 +45,7 @@ impl Mp4Box for MinfBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/moof.rs

@@ -36,7 +36,7 @@ impl Mp4Box for MoofBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/moov.rs

@@ -52,7 +52,7 @@ impl Mp4Box for MoovBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/mp4a.rs

@@ -61,7 +61,7 @@ impl Mp4Box for Mp4aBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {
@@ -170,7 +170,7 @@ impl Mp4Box for EsdsBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/mvex.rs

@@ -30,7 +30,7 @@ impl Mp4Box for MvexBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/mvhd.rs

@@ -67,7 +67,7 @@ impl Mp4Box for MvhdBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/smhd.rs

@@ -43,7 +43,7 @@ impl Mp4Box for SmhdBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/stbl.rs

@@ -64,7 +64,7 @@ impl Mp4Box for StblBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/stco.rs

@@ -34,7 +34,7 @@ impl Mp4Box for StcoBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/stsc.rs

@@ -42,7 +42,7 @@ impl Mp4Box for StscBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/stsd.rs

@@ -59,7 +59,7 @@ impl Mp4Box for StsdBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/stss.rs

@@ -34,7 +34,7 @@ impl Mp4Box for StssBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/stsz.rs

@@ -36,7 +36,7 @@ impl Mp4Box for StszBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/stts.rs

@@ -40,7 +40,7 @@ impl Mp4Box for SttsBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/tfdt.rs

@@ -37,7 +37,7 @@ impl Mp4Box for TfdtBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/tfhd.rs

@@ -58,7 +58,7 @@ impl Mp4Box for TfhdBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/tkhd.rs

@@ -126,7 +126,7 @@ impl Mp4Box for TkhdBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/traf.rs

@@ -36,7 +36,7 @@ impl Mp4Box for TrafBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/trak.rs

@@ -44,7 +44,7 @@ impl Mp4Box for TrakBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/trex.rs

@@ -35,7 +35,7 @@ impl Mp4Box for TrexBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/trun.rs

@@ -69,7 +69,7 @@ impl Mp4Box for TrunBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/tx3g.rs

@@ -62,7 +62,7 @@ impl Mp4Box for Tx3gBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/udta.rs

@@ -35,7 +35,7 @@ impl Mp4Box for UdtaBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/vmhd.rs

@@ -39,7 +39,7 @@ impl Mp4Box for VmhdBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/vp09.rs

@@ -75,7 +75,7 @@ impl Mp4Box for Vp09Box {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {

src/mp4box/vpcc.rs

@@ -32,7 +32,7 @@ impl Mp4Box for VpccBox {
     }
 
     fn to_json(&self) -> Result<String> {
-        Ok(serde_json::to_string(&self).unwrap())
+        serde_json::to_string(&self).map_err(|e| crate::error::Error::IoError(e.into()))
     }
 
     fn summary(&self) -> Result<String> {