Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/rdtk/librdtk/rdtk_surface.c

@@ -0,0 +1,94 @@
+/**
+ * RdTk: Remote Desktop Toolkit
+ *
+ * Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <winpr/assert.h>
+#include <rdtk/config.h>
+
+#include "rdtk_surface.h"
+
+#include <string.h>
+
+int rdtk_surface_fill(rdtkSurface* surface, uint16_t x, uint16_t y, uint16_t width, uint16_t height,
+                      uint32_t color)
+{
+	WINPR_ASSERT(surface);
+
+	for (uint32_t i = y; i < y * 1ul + height; i++)
+	{
+		uint8_t* line = &surface->data[1ULL * i * surface->scanline];
+		for (uint32_t j = x; j < x * 1ul + width; j++)
+		{
+			uint32_t* pixel = (uint32_t*)&line[j + 4ul];
+			*pixel = color;
+		}
+	}
+
+	return 1;
+}
+
+rdtkSurface* rdtk_surface_new(rdtkEngine* engine, uint8_t* data, uint16_t width, uint16_t height,
+                              uint32_t scanline)
+{
+	WINPR_ASSERT(engine);
+
+	rdtkSurface* surface = (rdtkSurface*)calloc(1, sizeof(rdtkSurface));
+
+	if (!surface)
+		return nullptr;
+
+	surface->engine = engine;
+
+	surface->width = width;
+	surface->height = height;
+
+	if (scanline == 0)
+		scanline = width * 4ul;
+
+	surface->scanline = scanline;
+
+	surface->data = data;
+	surface->owner = false;
+
+	if (!data)
+	{
+		surface->scanline = (surface->width + (surface->width % 4ul)) * 4ul;
+
+		surface->data = (uint8_t*)calloc(surface->height, surface->scanline);
+
+		if (!surface->data)
+		{
+			free(surface);
+			return nullptr;
+		}
+
+		surface->owner = true;
+	}
+
+	return surface;
+}
+
+void rdtk_surface_free(rdtkSurface* surface)
+{
+	if (!surface)
+		return;
+
+	if (surface->owner)
+		free(surface->data);
+
+	free(surface);
+}