skia2/tools/skottie2movie.cpp

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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "experimental/ffmpeg/SkVideoEncoder.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkGraphics.h"
#include "include/core/SkStream.h"
#include "include/core/SkSurface.h"
#include "include/core/SkTime.h"
#include "modules/skottie/include/Skottie.h"
#include "modules/skottie/utils/SkottieUtils.h"
#include "src/utils/SkOSPath.h"
#include "tools/flags/CommandLineFlags.h"
#include "tools/gpu/GrContextFactory.h"
#include "include/gpu/GrContextOptions.h"
static DEFINE_string2(input, i, "", "skottie animation to render");
static DEFINE_string2(output, o, "", "mp4 file to create");
static DEFINE_string2(assetPath, a, "", "path to assets needed for json file");
static DEFINE_int_2(fps, f, 25, "fps");
static DEFINE_bool2(verbose, v, false, "verbose mode");
static DEFINE_bool2(loop, l, false, "loop mode for profiling");
static DEFINE_int(set_dst_width, 0, "set destination width (height will be computed)");
static DEFINE_bool2(gpu, g, false, "use GPU for rendering");
static void produce_frame(SkSurface* surf, skottie::Animation* anim, double frame_time) {
anim->seekFrameTime(frame_time);
surf->getCanvas()->clear(SK_ColorWHITE);
anim->render(surf->getCanvas());
}
struct AsyncRec {
SkImageInfo info;
SkVideoEncoder* encoder;
};
int main(int argc, char** argv) {
SkGraphics::Init();
CommandLineFlags::SetUsage("Converts skottie to a mp4");
CommandLineFlags::Parse(argc, argv);
if (FLAGS_input.count() == 0) {
SkDebugf("-i input_file.json argument required\n");
return -1;
}
auto contextType = sk_gpu_test::GrContextFactory::kGL_ContextType;
GrContextOptions grCtxOptions;
sk_gpu_test::GrContextFactory factory(grCtxOptions);
SkString assetPath;
if (FLAGS_assetPath.count() > 0) {
assetPath.set(FLAGS_assetPath[0]);
} else {
assetPath = SkOSPath::Dirname(FLAGS_input[0]);
}
SkDebugf("assetPath %s\n", assetPath.c_str());
auto animation = skottie::Animation::Builder()
.setResourceProvider(skottie_utils::FileResourceProvider::Make(assetPath))
.makeFromFile(FLAGS_input[0]);
if (!animation) {
SkDebugf("failed to load %s\n", FLAGS_input[0]);
return -1;
}
SkISize dim = animation->size().toRound();
double duration = animation->duration();
int fps = FLAGS_fps;
if (fps < 1) {
fps = 1;
} else if (fps > 240) {
fps = 240;
}
float scale = 1;
if (FLAGS_set_dst_width > 0) {
scale = FLAGS_set_dst_width / (float)dim.width();
dim = { FLAGS_set_dst_width, SkScalarRoundToInt(scale * dim.height()) };
}
const int frames = SkScalarRoundToInt(duration * fps);
const double frame_duration = 1.0 / fps;
if (FLAGS_verbose) {
SkDebugf("Size %dx%d duration %g, fps %d, frame_duration %g\n",
dim.width(), dim.height(), duration, fps, frame_duration);
}
SkVideoEncoder encoder;
GrContext* context = nullptr;
sk_sp<SkSurface> surf;
sk_sp<SkData> data;
do {
double loop_start = SkTime::GetSecs();
encoder.beginRecording(dim, fps);
auto info = encoder.preferredInfo();
// lazily allocate the surfaces
if (!surf) {
if (FLAGS_gpu) {
context = factory.getContextInfo(contextType).grContext();
surf = SkSurface::MakeRenderTarget(context,
SkBudgeted::kNo,
info,
0,
GrSurfaceOrigin::kTopLeft_GrSurfaceOrigin,
nullptr);
if (!surf) {
context = nullptr;
}
}
if (!surf) {
surf = SkSurface::MakeRaster(info);
}
surf->getCanvas()->scale(scale, scale);
}
for (int i = 0; i <= frames; ++i) {
double ts = i * 1.0 / fps;
if (FLAGS_verbose) {
SkDebugf("rendering frame %d ts %g\n", i, ts);
}
double normal_time = i * 1.0 / frames;
double frame_time = normal_time * duration;
produce_frame(surf.get(), animation.get(), frame_time);
AsyncRec asyncRec = { info, &encoder };
if (context) {
surf->asyncRescaleAndReadPixels(info, {0, 0, info.width(), info.height()},
SkSurface::RescaleGamma::kSrc, kNone_SkFilterQuality,
[](void* ctx, const void* data, size_t rb) {
AsyncRec* rec = (AsyncRec*)ctx;
rec->encoder->addFrame({rec->info, data, rb});
}, &asyncRec);
} else {
SkPixmap pm;
SkAssertResult(surf->peekPixels(&pm));
encoder.addFrame(pm);
}
}
data = encoder.endRecording();
if (FLAGS_loop) {
double loop_dur = SkTime::GetSecs() - loop_start;
SkDebugf("recording secs %g, frames %d, recording fps %d\n",
loop_dur, frames, (int)(frames / loop_dur));
}
} while (FLAGS_loop);
if (FLAGS_output.count() == 0) {
SkDebugf("missing -o output_file.mp4 argument\n");
return 0;
}
SkFILEWStream ostream(FLAGS_output[0]);
if (!ostream.isValid()) {
SkDebugf("Can't create output file %s\n", FLAGS_output[0]);
return -1;
}
ostream.write(data->data(), data->size());
return 0;
}