Add control over gif frame count

defaults.toml

@@ -39,6 +39,7 @@ cache_duration = 168
 max_width = 128
 max_height = 128
 max_area = 16384
+max_frame_count = 100
 
 [repo]
 type = "sled"

pict-rs.toml

@@ -224,6 +224,14 @@ max_height = 128
 # depending on whether video uploads are enabled
 max_area = 16384
 
+# Optional: Maximum number of frames permitted in uploaded gifs
+# environment variable: PICTRS__MEDIA__GIF__MAX_FRAME_COUNT
+# default: 100
+#
+# If a gif does not fit within this bound, it will either be transcoded to a video or rejected,
+# depending on whether video uploads are enabled
+max_frame_count = 100
+
 
 ## Database configuration
 [repo]

src/config/commandline.rs

@@ -462,19 +462,19 @@ struct Run {
     media_max_frame_count: Option<usize>,
     /// Maximum width allowed for gif uploads.
     ///
-    /// If an upload exceeds this value, it will be transcoded to a video format or aborted,
+    /// If an upload exceeds this value, it will be transcoded to a video format or rejected,
     /// depending on whether video uploads are enabled.
     #[arg(long)]
     media_gif_max_width: Option<usize>,
     /// Maximum height allowed for gif uploads
     ///
-    /// If an upload exceeds this value, it will be transcoded to a video format or aborted,
+    /// If an upload exceeds this value, it will be transcoded to a video format or rejected,
     /// depending on whether video uploads are enabled.
     #[arg(long)]
     media_gif_max_height: Option<usize>,
     /// Maximum area allowed for gif uploads
     ///
-    /// If an upload exceeds this value, it will be transcoded to a video format or aborted,
+    /// If an upload exceeds this value, it will be transcoded to a video format or rejected,
     /// depending on whether video uploads are enabled.
     #[arg(long)]
     media_gif_max_area: Option<usize>,

src/config/defaults.rs

@@ -81,6 +81,7 @@ struct GifDefaults {
     max_height: usize,
     max_width: usize,
     max_area: usize,
+    max_frame_count: usize,
 }
 
 #[derive(Clone, Debug, serde::Serialize)]
@@ -187,6 +188,7 @@ impl Default for GifDefaults {
             max_height: 128,
             max_width: 128,
             max_area: 16384,
+            max_frame_count: 100,
         }
     }
 }

src/config/file.rs

@@ -128,6 +128,8 @@ pub(crate) struct Gif {
     pub(crate) max_height: usize,
 
     pub(crate) max_area: usize,
+
+    pub(crate) max_frame_count: usize,
 }
 
 impl Media {

src/ffmpeg.rs

@@ -33,6 +33,7 @@ impl TranscodeOptions {
             if details.width <= media.gif.max_width
                 && details.height <= media.gif.max_height
                 && details.width * details.height <= media.gif.max_area
+                && details.frames.unwrap_or(1) <= media.gif.max_frame_count
             {
                 return Self {
                     input_format,