67 lines
1.5 KiB
C++
67 lines
1.5 KiB
C++
/*
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* Copyright 2019 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "experimental/ffmpeg/SkVideoDecoder.h"
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#include "gm/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkStream.h"
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class VideoDecoderGM : public skiagm::GM {
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SkVideoDecoder fDecoder;
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public:
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VideoDecoderGM() {}
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protected:
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SkString onShortName() override {
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return SkString("videodecoder");
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}
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SkISize onISize() override {
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return SkISize::Make(1024, 768);
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}
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void onOnceBeforeDraw() override {
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if (!fDecoder.loadStream(SkStream::MakeFromFile("/skia/ice.mp4"))) {
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SkDebugf("could not load movie file\n");
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}
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SkDebugf("duration %g\n", fDecoder.duration());
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}
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void onDraw(SkCanvas* canvas) override {
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auto* rContext = canvas->recordingContext();
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if (!rContext) {
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return;
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}
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fDecoder.setGrContext(rContext); // context can change over time in viewer
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double timeStamp;
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auto img = fDecoder.nextImage(&timeStamp);
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if (!img) {
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(void)fDecoder.rewind();
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img = fDecoder.nextImage(&timeStamp);
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}
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if (img) {
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if (0) {
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SkDebugf("ts %g\n", timeStamp);
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}
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canvas->drawImage(img, 10, 10);
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}
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}
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bool onAnimate(double nanos) override {
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return true;
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}
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private:
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using INHERITED = GM;
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};
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DEF_GM( return new VideoDecoderGM; )
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