Convert .tgs with go libraries (and cgo) (telegram) (#1569)

This commit adds support for go/cgo tgs conversion when building with the -tags `cgo`
The default binaries are still "pure" go and uses the old way of converting.

* Move lottie_convert.py conversion code to its own file

* Add optional libtgsconverter

* Update vendor

* Apply suggestions from code review

* Update bridge/helper/libtgsconverter.go

Co-authored-by: Wim <wim@42.be>

1 files changed, 60 insertions, 0 deletions

diff --git a/vendor/github.com/Benau/go_rlottie/vector_vpainter.h b/vendor/github.com/Benau/go_rlottie/vector_vpainter.h
new file mode 100644
index 00000000..01cd99a5
--- /dev/null
+++ b/vendor/github.com/Benau/go_rlottie/vector_vpainter.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef VPAINTER_H
+#define VPAINTER_H
+
+#include "vector_vbrush.h"
+#include "vector_vpoint.h"
+#include "vector_vrle.h"
+#include "vector_vdrawhelper.h"
+
+V_BEGIN_NAMESPACE
+
+class VBitmap;
+class VPainter {
+public:
+    VPainter() = default;
+    explicit VPainter(VBitmap *buffer);
+    bool  begin(VBitmap *buffer);
+    void  end();
+    void  setDrawRegion(const VRect &region); // sub surface rendering area.
+    void  setBrush(const VBrush &brush);
+    void  setBlendMode(BlendMode mode);
+    void  drawRle(const VPoint &pos, const VRle &rle);
+    void  drawRle(const VRle &rle, const VRle &clip);
+    VRect clipBoundingRect() const;
+
+    void  drawBitmap(const VPoint &point, const VBitmap &bitmap, const VRect &source, uint8_t const_alpha = 255);
+    void  drawBitmap(const VRect &target, const VBitmap &bitmap, const VRect &source, uint8_t const_alpha = 255);
+    void  drawBitmap(const VPoint &point, const VBitmap &bitmap, uint8_t const_alpha = 255);
+    void  drawBitmap(const VRect &rect, const VBitmap &bitmap, uint8_t const_alpha = 255);
+private:
+    void drawBitmapUntransform(const VRect &target, const VBitmap &bitmap,
+                               const VRect &source, uint8_t const_alpha);
+    VRasterBuffer mBuffer;
+    VSpanData     mSpanData;
+};
+
+V_END_NAMESPACE
+
+#endif  // VPAINTER_H