Fix video decoder on Web env. (#117)

* Fix video decoder on Web env.

* Remove unused variable.

* Fix some tgfx bindings on Web env.

src/platform/web/DecodingPolicy.cpp

@@ -0,0 +1,28 @@
+/////////////////////////////////////////////////////////////////////////////////////////////////
+//
+//  Tencent is pleased to support the open source community by making libpag available.
+//
+//  Copyright (C) 2021 THL A29 Limited, a Tencent company. All rights reserved.
+//
+//  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 "pag/pag.h"
+
+namespace pag {
+void PAGVideoDecoder::SetSoftwareToHardwareEnabled(bool) {
+}
+
+bool SoftwareToHardwareEnabled() {
+  return false;
+}
+}  // namespace pag

src/rendering/caches/RenderCache.cpp

@@ -25,7 +25,6 @@
 #include "rendering/caches/ImageContentCache.h"
 #include "rendering/caches/LayerCache.h"
 #include "rendering/renderers/FilterRenderer.h"
-#include "video/VideoDecoder.h"
 
 namespace pag {
 // 300M设置的大一些用于兜底，通常在大于20M时就开始随时清理。
@@ -167,10 +166,9 @@ void RenderCache::prepareFrame() {
   for (auto& item : layerDistances) {
     for (auto pagLayer : item.second) {
       if (pagLayer->layerType() == LayerType::PreCompose) {
-        auto policy =
-            VideoDecoder::SoftwareToHardwareEnabled() && item.first < MIN_HARDWARE_PREPARE_TIME
-                ? DecodingPolicy::SoftwareToHardware
-                : DecodingPolicy::Hardware;
+        auto policy = SoftwareToHardwareEnabled() && item.first < MIN_HARDWARE_PREPARE_TIME
+                          ? DecodingPolicy::SoftwareToHardware
+                          : DecodingPolicy::Hardware;
         preparePreComposeLayer(static_cast<PreComposeLayer*>(pagLayer->layer), policy);
       } else if (pagLayer->layerType() == LayerType::Image) {
         prepareImageLayer(static_cast<PAGImageLayer*>(pagLayer));
@@ -423,9 +421,8 @@ std::shared_ptr<SequenceReader> RenderCache::getSequenceReader(Sequence* sequenc
   if (reader == nullptr) {
     auto file = stage->getSequenceFile(sequence);
     reader = MakeSequenceReader(file, sequence,
-                                VideoDecoder::SoftwareToHardwareEnabled()
-                                    ? DecodingPolicy::SoftwareToHardware
-                                    : DecodingPolicy::Hardware);
+                                SoftwareToHardwareEnabled() ? DecodingPolicy::SoftwareToHardware
+                                                            : DecodingPolicy::Hardware);
     if (reader && !staticComposition) {
       // 完全静态的序列帧不用缓存。
       sequenceCaches[compositionID] = reader;

src/rendering/renderers/CompositionRenderer.cpp

@@ -23,7 +23,6 @@
 #include "rendering/graphics/Picture.h"
 #include "rendering/graphics/Recorder.h"
 #include "rendering/readers/BitmapSequenceReader.h"
-#include "video/VideoDecoder.h"
 
 namespace pag {
 class SequenceProxy : public TextureProxy {
@@ -37,10 +36,10 @@ class SequenceProxy : public TextureProxy {
   }
 
   void prepare(RenderCache* cache) const override {
-    static_cast<RenderCache*>(cache)->prepareSequenceReader(
-        sequence, frame,
-        VideoDecoder::SoftwareToHardwareEnabled() ? DecodingPolicy::SoftwareToHardware
-                                                  : DecodingPolicy::Hardware);
+    static_cast<RenderCache*>(cache)->prepareSequenceReader(sequence, frame,
+                                                            SoftwareToHardwareEnabled()
+                                                                ? DecodingPolicy::SoftwareToHardware
+                                                                : DecodingPolicy::Hardware);
   }
 
   std::shared_ptr<tgfx::Texture> getTexture(RenderCache* cache) const override {

src/video/DecodingPolicy.cpp

@@ -0,0 +1,33 @@
+/////////////////////////////////////////////////////////////////////////////////////////////////
+//
+//  Tencent is pleased to support the open source community by making libpag available.
+//
+//  Copyright (C) 2021 THL A29 Limited, a Tencent company. All rights reserved.
+//
+//  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 "DecodingPolicy.h"
+#include <atomic>
+#include "pag/pag.h"
+
+namespace pag {
+static std::atomic_bool softwareToHardwareEnabled = true;
+
+void PAGVideoDecoder::SetSoftwareToHardwareEnabled(bool value) {
+  softwareToHardwareEnabled = value;
+}
+
+bool SoftwareToHardwareEnabled() {
+  return softwareToHardwareEnabled;
+}
+}  // namespace pag

src/video/DecodingPolicy.h

@@ -34,4 +34,11 @@ enum class DecodingPolicy {
    */
   SoftwareToHardware
 };
+
+/**
+   * If true, VideoDecoder uses a software decoder first, but initializes a hardware on
+   * async thread, and then switches to the hardware decoder when it is initialized.
+   * The default value is true, which will improve the performance of first frame rendering.
+   */
+bool SoftwareToHardwareEnabled();
 }  // namespace pag

src/video/VideoDecoder.cpp

@@ -26,18 +26,13 @@
 
 namespace pag {
 static std::atomic<SoftwareDecoderFactory*> softwareDecoderFactory = {nullptr};
-static std::atomic_bool softwareToHardwareEnabled = true;
 static std::atomic_int maxHardwareDecoderCount = {65535};
 static std::atomic_int globalGPUDecoderCount = {0};
 
 void PAGVideoDecoder::SetMaxHardwareDecoderCount(int count) {
   maxHardwareDecoderCount = count;
 }
 
-void PAGVideoDecoder::SetSoftwareToHardwareEnabled(bool value) {
-  softwareToHardwareEnabled = value;
-}
-
 void PAGVideoDecoder::RegisterSoftwareDecoderFactory(SoftwareDecoderFactory* decoderFactory) {
   softwareDecoderFactory = decoderFactory;
 }
@@ -46,10 +41,6 @@ bool VideoDecoder::HasHardwareDecoder() {
   return Platform::Current()->hasHardwareDecoder();
 }
 
-bool VideoDecoder::SoftwareToHardwareEnabled() {
-  return softwareToHardwareEnabled;
-}
-
 int VideoDecoder::GetMaxHardwareDecoderCount() {
   return maxHardwareDecoderCount;
 }

src/video/VideoDecoder.h

@@ -71,13 +71,6 @@ class VideoDecoder {
    */
   static int GetMaxHardwareDecoderCount();
 
-  /**
-   * If true, VideoDecoder uses a software decoder first, but initializes a hardware on
-   * async thread, and then switches to the hardware decoder when it is initialized.
-   * The default value is true, which will improve the performance of first frame rendering.
-   */
-  static bool SoftwareToHardwareEnabled();
-
   /**
    * Creates a new video decoder by specified type. Returns a hardware video decoder if useHardware
    * is true, otherwise, returns a software video decoder.

web/src/pag_wasm_bindings.cpp

@@ -192,13 +192,13 @@ EMSCRIPTEN_BINDINGS(pag) {
       .property("rowBytes", &tgfx::ImageInfo::rowBytes)
       .property("colorType", &tgfx::ImageInfo::colorType);
 
-  class_<Matrix>("Matrix")
-      .property("a", &Matrix::getScaleX)
-      .property("b", &Matrix::getSkewY)
-      .property("c", &Matrix::getSkewX)
-      .property("d", &Matrix::getScaleY)
-      .property("tx", &Matrix::getTranslateX)
-      .property("ty", &Matrix::getTranslateY);
+  class_<tgfx::Matrix>("Matrix")
+      .property("a", &tgfx::Matrix::getScaleX)
+      .property("b", &tgfx::Matrix::getSkewY)
+      .property("c", &tgfx::Matrix::getSkewX)
+      .property("d", &tgfx::Matrix::getScaleY)
+      .property("tx", &tgfx::Matrix::getTranslateX)
+      .property("ty", &tgfx::Matrix::getTranslateY);
 
   class_<TextDocument>("TextDocument")
       .smart_ptr<std::shared_ptr<TextDocument>>("TextDocument")
@@ -238,18 +238,18 @@ EMSCRIPTEN_BINDINGS(pag) {
       .field("xHeight", &tgfx::FontMetrics::xHeight)
       .field("capHeight", &tgfx::FontMetrics::capHeight);
 
-  value_object<Rect>("Rect")
-      .field("left", &Rect::left)
-      .field("top", &Rect::top)
-      .field("right", &Rect::right)
-      .field("bottom", &Rect::bottom);
+  value_object<tgfx::Rect>("Rect")
+      .field("left", &tgfx::Rect::left)
+      .field("top", &tgfx::Rect::top)
+      .field("right", &tgfx::Rect::right)
+      .field("bottom", &tgfx::Rect::bottom);
 
-  value_object<Point>("Point").field("x", &Point::x).field("y", &Point::y);
+  value_object<tgfx::Point>("Point").field("x", &tgfx::Point::x).field("y", &tgfx::Point::y);
 
-  value_object<Color>("Color")
-      .field("red", &Color::red)
-      .field("green", &Color::green)
-      .field("blue", &Color::blue);
+  value_object<tgfx::Color>("Color")
+      .field("red", &tgfx::Color::red)
+      .field("green", &tgfx::Color::green)
+      .field("blue", &tgfx::Color::blue);
 
   value_object<Marker>("Marker")
       .field("startTime", &Marker::startTime)
@@ -262,11 +262,11 @@ EMSCRIPTEN_BINDINGS(pag) {
       .value("INVERSE_WINDING", tgfx::PathFillType::InverseWinding)
       .value("INVERSE_EVEN_ODD", tgfx::PathFillType::InverseEvenOdd);
 
-  enum_<ColorType>("ColorType")
-      .value("Unknown", ColorType::Unknown)
-      .value("ALPHA_8", ColorType::ALPHA_8)
-      .value("RGBA_8888", ColorType::RGBA_8888)
-      .value("BGRA_8888", ColorType::BGRA_8888);
+  enum_<tgfx::ColorType>("ColorType")
+      .value("Unknown", tgfx::ColorType::Unknown)
+      .value("ALPHA_8", tgfx::ColorType::ALPHA_8)
+      .value("RGBA_8888", tgfx::ColorType::RGBA_8888)
+      .value("BGRA_8888", tgfx::ColorType::BGRA_8888);
 
   enum_<LayerType>("LayerType")
       .value("Unknown", LayerType::Unknown)
@@ -289,7 +289,7 @@ EMSCRIPTEN_BINDINGS(pag) {
 
   register_vector<std::shared_ptr<PAGLayer>>("VectorPAGLayer");
   register_vector<std::string>("VectorString");
-  register_vector<Point>("VectorPoint");
+  register_vector<tgfx::Point>("VectorPoint");
   register_vector<const Marker*>("VectorMarker");
 
   function("_SetFallbackFontNames", optional_override([](std::vector<std::string> fontNames) {