add vsh.printf to example

dnjulek · Apr 25, 2024 · 116d94b · 116d94b
1 parent 91c4f52
commit 116d94b
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Showing 2 changed files with 18 additions and 4 deletions.
diff --git a/examples/example/build.zig.zon b/examples/example/build.zig.zon
@@ -4,8 +4,8 @@
     .paths = .{""},
     .dependencies = .{
         .vapoursynth = .{
-            .url = "https://github.com/dnjulek/vapoursynth-zig/archive/2f6a59a6cccf23cec7ca8a3abb3f316593c5ed7b.tar.gz",
-            .hash = "12201cb4befda1224caa03a57a2188d5d5e985a7fdd7a8b3277d385dba4cb0e272cb",
+            .url = "https://github.com/dnjulek/vapoursynth-zig/archive/91c4f5249ac84416d654c1c5dc8b4b8dd90a7c2b.tar.gz",
+            .hash = "12205228fdfbb0f040c7f28e846fb82e14e27b4c9f0408203190ba38fbb0a4de8836",
         },
     },
 }
diff --git a/examples/example/src/invert_example.zig b/examples/example/src/invert_example.zig
@@ -13,6 +13,7 @@ const allocator = std.heap.c_allocator;
 const InvertData = struct {
     node: ?*vs.Node,
     enabled: bool,
+    string_bufs: [2]?[]u8,
 };
 
 export fn invertGetFrame(n: c_int, activation_reason: vs.ActivationReason, instance_data: ?*anyopaque, frame_data: ?*?*anyopaque, frame_ctx: ?*vs.FrameContext, core: ?*vs.Core, vsapi: ?*const vs.API) callconv(.C) ?*const vs.Frame {
@@ -63,6 +64,9 @@ export fn invertFree(instance_data: ?*anyopaque, core: ?*vs.Core, vsapi: ?*const
     _ = core;
     const d: *InvertData = @ptrCast(@alignCast(instance_data));
     vsapi.?.freeNode.?(d.node);
+    for (d.string_bufs) |buf| {
+        if (buf) |b| allocator.free(b);
+    }
     allocator.destroy(d);
 }
 
@@ -75,7 +79,12 @@ export fn invertCreate(in: ?*const vs.Map, out: ?*vs.Map, user_data: ?*anyopaque
     const vi: *const vs.VideoInfo = vsapi.?.getVideoInfo.?(d.node);
 
     if (!vsh.isConstantVideoFormat(vi) or (vi.format.sampleType != .Integer) or (vi.format.bitsPerSample != @as(c_int, 8))) {
-        vsapi.?.mapSetError.?(out, "Invert: only constant format 8bit integer input supported");
+        vsapi.?.mapSetError.?(out, vsh.printf(
+            allocator,
+            &d.string_bufs[0],
+            "Invert: only constant format 8bit integer input supported. Input clip is {}x{} {}-bits",
+            .{ vi.width, vi.height, vi.format.bitsPerSample },
+        ).ptr);
         vsapi.?.freeNode.?(d.node);
         return;
     }
@@ -84,7 +93,12 @@ export fn invertCreate(in: ?*const vs.Map, out: ?*vs.Map, user_data: ?*anyopaque
     const enabled = vsh.mapGetN(i32, in, "enabled", 0, vsapi) orelse 1;
 
     if ((enabled < 0) or (enabled > 1)) {
-        vsapi.?.mapSetError.?(out, "Invert: enabled must be 0 or 1");
+        vsapi.?.mapSetError.?(out, vsh.printf(
+            allocator,
+            &d.string_bufs[1],
+            "Invert: enabled must be 0 or 1. Passed: {}",
+            .{enabled},
+        ).ptr);
         vsapi.?.freeNode.?(d.node);
         return;
     }