feat: play video frame by frame

godly-devotion · Apr 2, 2024 · bc3b88e · bc3b88e
1 parent e6e400e
commit bc3b88e
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Showing 3 changed files with 79 additions and 0 deletions.
diff --git a/Front Row/Localizable.xcstrings b/Front Row/Localizable.xcstrings
@@ -2475,6 +2475,34 @@
         }
       }
     },
+    "Next Frame" : {
+      "localizations" : {
+        "ja" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "次のフレームへ"
+          }
+        },
+        "ko" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "다음 프레임"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "下一帧"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "下一個影格"
+          }
+        }
+      }
+    },
     "None" : {
       "localizations" : {
         "ar" : {
@@ -3471,6 +3499,34 @@
         }
       }
     },
+    "Previous Frame" : {
+      "localizations" : {
+        "ja" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "前のフレームへ"
+          }
+        },
+        "ko" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "이전 프레임"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "上一帧"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "上一個影格"
+          }
+        }
+      }
+    },
     "Report a Problem" : {
       "localizations" : {
         "ja" : {

diff --git a/Front Row/Main Menu/PlaybackCommands.swift b/Front Row/Main Menu/PlaybackCommands.swift
@@ -80,6 +80,22 @@ struct PlaybackCommands: Commands {
 
             Divider()
 
+            Button {
+                Task { await playEngine.frameStep(1) }
+            } label: {
+                Text("Next Frame")
+            }
+            .keyboardShortcut(".", modifiers: [])
+            .disabled(!playEngine.isLoaded || presentedViewManager.isPresenting)
+
+            Button {
+                Task { await playEngine.frameStep(-1) }
+            } label: {
+                Text("Previous Frame")
+            }
+            .keyboardShortcut(",", modifiers: [])
+            .disabled(!playEngine.isLoaded || presentedViewManager.isPresenting)
+
             Button {
                 Task { await playEngine.goForwards() }
             } label: {

diff --git a/Front Row/Support/PlayEngine.swift b/Front Row/Support/PlayEngine.swift
@@ -324,6 +324,13 @@ import SwiftUI
         await player.seek(to: time, toleranceBefore: .zero, toleranceAfter: .zero)
     }
 
+    @MainActor
+    func frameStep(_ byCount: Int) {
+        guard let item = player.currentItem else { return }
+
+        item.step(byCount: byCount)
+    }
+
     func fitToVideoSize() {
         guard let window = NSApp.windows.first else { return }
         guard videoSize != CGSize.zero else {