Share document export readiness reporting

src/paint_renderer/compositor.cpp

@@ -481,6 +481,29 @@ pp::foundation::Result<DocumentFrameFacePngExportResult> export_document_frame_f
     return pp::foundation::Result<DocumentFrameFacePngExportResult>::success(std::move(result));
 }
 
+pp::foundation::Result<DocumentFrameExportReadinessResult> prepare_document_frame_export_readiness(
+    DocumentFrameCompositeRequest request)
+{
+    auto recorded_upload = record_document_frame_upload(DocumentFrameUploadRequest {
+        .document = request.document,
+        .frame_index = request.frame_index,
+        .clear_color = request.clear_color,
+    });
+    if (!recorded_upload) {
+        return pp::foundation::Result<DocumentFrameExportReadinessResult>::failure(recorded_upload.status());
+    }
+
+    auto face_pngs = export_document_frame_face_pngs(request);
+    if (!face_pngs) {
+        return pp::foundation::Result<DocumentFrameExportReadinessResult>::failure(face_pngs.status());
+    }
+
+    DocumentFrameExportReadinessResult result;
+    result.recorded_upload = std::move(recorded_upload.value());
+    result.face_pngs = std::move(face_pngs.value());
+    return pp::foundation::Result<DocumentFrameExportReadinessResult>::success(std::move(result));
+}
+
 bool stroke_composite_requires_feedback(
     pp::paint::BlendMode layer_blend_mode,
     pp::paint::StrokeBlendMode stroke_blend_mode,

src/paint_renderer/compositor.h

@@ -146,6 +146,11 @@ struct DocumentFrameFacePngExportResult {
     std::uint64_t encoded_bytes = 0;
 };
 
+struct DocumentFrameExportReadinessResult {
+    RecordedDocumentFrameUploadResult recorded_upload {};
+    DocumentFrameFacePngExportResult face_pngs {};
+};
+
 [[nodiscard]] pp::foundation::Status composite_layer(
     std::span<pp::paint::Rgba> destination,
     pp::renderer::Extent2D extent,
@@ -167,6 +172,9 @@ struct DocumentFrameFacePngExportResult {
 [[nodiscard]] pp::foundation::Result<DocumentFrameFacePngExportResult> export_document_frame_face_pngs(
     DocumentFrameCompositeRequest request);
 
+[[nodiscard]] pp::foundation::Result<DocumentFrameExportReadinessResult> prepare_document_frame_export_readiness(
+    DocumentFrameCompositeRequest request);
+
 [[nodiscard]] bool stroke_composite_requires_feedback(
     pp::paint::BlendMode layer_blend_mode,
     pp::paint::StrokeBlendMode stroke_blend_mode,