1 /*
2 * Copyright 2014 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "experimental/ffmpeg/SkVideoEncoder.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkGraphics.h"
11 #include "include/core/SkStream.h"
12 #include "include/core/SkSurface.h"
13 #include "include/private/base/SkTPin.h"
14 #include "modules/skottie/include/Skottie.h"
15 #include "modules/skresources/include/SkResources.h"
16 #include "src/base/SkTime.h"
17 #include "src/utils/SkOSPath.h"
18
19 #include "tools/CodecUtils.h"
20 #include "tools/flags/CommandLineFlags.h"
21 #include "tools/gpu/GrContextFactory.h"
22
23 #include "include/gpu/GrContextOptions.h"
24 #include "include/gpu/GrTypes.h"
25 #include "include/gpu/ganesh/SkSurfaceGanesh.h"
26 #include "modules/skshaper/utils/FactoryHelpers.h"
27
28 #if defined(SK_BUILD_FOR_MAC) && defined(SK_FONTMGR_CORETEXT_AVAILABLE)
29 #include "include/ports/SkFontMgr_mac_ct.h"
30 #elif defined(SK_BUILD_FOR_UNIX) && defined(SK_FONTMGR_FONTCONFIG_AVAILABLE)
31 #include "include/ports/SkFontMgr_fontconfig.h"
32 #else
33 #include "include/ports/SkFontMgr_empty.h"
34 #endif
35
36 static DEFINE_string2(input, i, "", "skottie animation to render");
37 static DEFINE_string2(output, o, "", "mp4 file to create");
38 static DEFINE_string2(assetPath, a, "", "path to assets needed for json file");
39 static DEFINE_int_2(fps, f, 25, "fps");
40 static DEFINE_bool2(verbose, v, false, "verbose mode");
41 static DEFINE_bool2(loop, l, false, "loop mode for profiling");
42 static DEFINE_int(set_dst_width, 0, "set destination width (height will be computed)");
43 static DEFINE_bool2(gpu, g, false, "use GPU for rendering");
44
produce_frame(SkSurface * surf,skottie::Animation * anim,double frame)45 static void produce_frame(SkSurface* surf, skottie::Animation* anim, double frame) {
46 anim->seekFrame(frame);
47 surf->getCanvas()->clear(SK_ColorWHITE);
48 anim->render(surf->getCanvas());
49 }
50
51 struct AsyncRec {
52 SkImageInfo info;
53 SkVideoEncoder* encoder;
54 };
55
main(int argc,char ** argv)56 int main(int argc, char** argv) {
57 SkGraphics::Init();
58
59 CommandLineFlags::SetUsage("Converts skottie to a mp4");
60 CommandLineFlags::Parse(argc, argv);
61
62 if (FLAGS_input.size() == 0) {
63 SkDebugf("-i input_file.json argument required\n");
64 return -1;
65 }
66
67 auto contextType = skgpu::ContextType::kGL;
68 GrContextOptions grCtxOptions;
69 sk_gpu_test::GrContextFactory factory(grCtxOptions);
70
71 SkString assetPath;
72 if (FLAGS_assetPath.size() > 0) {
73 assetPath.set(FLAGS_assetPath[0]);
74 } else {
75 assetPath = SkOSPath::Dirname(FLAGS_input[0]);
76 }
77 SkDebugf("assetPath %s\n", assetPath.c_str());
78
79 CodecUtils::RegisterAllAvailable();
80
81 // If necessary, clients should use a font manager that would load fonts from the system.
82 #if defined(SK_BUILD_FOR_MAC) && defined(SK_FONTMGR_CORETEXT_AVAILABLE)
83 sk_sp<SkFontMgr> fontMgr = SkFontMgr_New_CoreText(nullptr);
84 #elif defined(SK_BUILD_FOR_ANDROID) && defined(SK_FONTMGR_ANDROID_AVAILABLE)
85 sk_sp<SkFontMgr> fontMgr = SkFontMgr_New_Android(nullptr, std::make_unique<SkFontScanner_FreeType>());
86 #elif defined(SK_BUILD_FOR_UNIX) && defined(SK_FONTMGR_FONTCONFIG_AVAILABLE)
87 sk_sp<SkFontMgr> fontMgr = SkFontMgr_New_FontConfig(nullptr);
88 #else
89 sk_sp<SkFontMgr> fontMgr = SkFontMgr_New_Custom_Empty();
90 #endif
91
92 auto animation = skottie::Animation::Builder()
93 .setResourceProvider(skresources::FileResourceProvider::Make(assetPath))
94 .setTextShapingFactory(SkShapers::BestAvailable())
95 .setFontManager(fontMgr)
96 .makeFromFile(FLAGS_input[0]);
97 if (!animation) {
98 SkDebugf("failed to load %s\n", FLAGS_input[0]);
99 return -1;
100 }
101
102 SkISize dim = animation->size().toRound();
103 double duration = animation->duration();
104 int fps = SkTPin(FLAGS_fps, 1, 240);
105 double fps_scale = animation->fps() / fps;
106
107 float scale = 1;
108 if (FLAGS_set_dst_width > 0) {
109 scale = FLAGS_set_dst_width / (float)dim.width();
110 dim = { FLAGS_set_dst_width, SkScalarRoundToInt(scale * dim.height()) };
111 }
112
113 const int frames = SkScalarRoundToInt(duration * fps);
114 const double frame_duration = 1.0 / fps;
115
116 if (FLAGS_verbose) {
117 SkDebugf("Size %dx%d duration %g, fps %d, frame_duration %g\n",
118 dim.width(), dim.height(), duration, fps, frame_duration);
119 }
120
121 SkVideoEncoder encoder;
122
123 GrDirectContext* grctx = nullptr;
124 sk_sp<SkSurface> surf;
125 sk_sp<SkData> data;
126
127 const auto info = SkImageInfo::MakeN32Premul(dim);
128 do {
129 double loop_start = SkTime::GetSecs();
130
131 if (!encoder.beginRecording(dim, fps)) {
132 SkDEBUGF("Invalid video stream configuration.\n");
133 return -1;
134 }
135
136 // lazily allocate the surfaces
137 if (!surf) {
138 if (FLAGS_gpu) {
139 grctx = factory.getContextInfo(contextType).directContext();
140 surf = SkSurfaces::RenderTarget(grctx,
141 skgpu::Budgeted::kNo,
142 info,
143 0,
144 GrSurfaceOrigin::kTopLeft_GrSurfaceOrigin,
145 nullptr);
146 if (!surf) {
147 grctx = nullptr;
148 }
149 }
150 if (!surf) {
151 surf = SkSurfaces::Raster(info);
152 }
153 surf->getCanvas()->scale(scale, scale);
154 }
155
156 for (int i = 0; i <= frames; ++i) {
157 const double frame = i * fps_scale;
158 if (FLAGS_verbose) {
159 SkDebugf("rendering frame %g\n", frame);
160 }
161
162 produce_frame(surf.get(), animation.get(), frame);
163
164 AsyncRec asyncRec = { info, &encoder };
165 if (grctx) {
166 auto read_pixels_cb = [](SkSurface::ReadPixelsContext ctx,
167 std::unique_ptr<const SkSurface::AsyncReadResult> result) {
168 if (result && result->count() == 1) {
169 AsyncRec* rec = reinterpret_cast<AsyncRec*>(ctx);
170 rec->encoder->addFrame({rec->info, result->data(0), result->rowBytes(0)});
171 }
172 };
173 surf->asyncRescaleAndReadPixels(info, {0, 0, info.width(), info.height()},
174 SkSurface::RescaleGamma::kSrc,
175 SkImage::RescaleMode::kNearest,
176 read_pixels_cb, &asyncRec);
177 grctx->submit();
178 } else {
179 SkPixmap pm;
180 SkAssertResult(surf->peekPixels(&pm));
181 encoder.addFrame(pm);
182 }
183 }
184
185 if (grctx) {
186 // ensure all pending reads are completed
187 grctx->flushAndSubmit(GrSyncCpu::kYes);
188 }
189 data = encoder.endRecording();
190
191 if (FLAGS_loop) {
192 double loop_dur = SkTime::GetSecs() - loop_start;
193 SkDebugf("recording secs %g, frames %d, recording fps %d\n",
194 loop_dur, frames, (int)(frames / loop_dur));
195 }
196 } while (FLAGS_loop);
197
198 if (FLAGS_output.size() == 0) {
199 SkDebugf("missing -o output_file.mp4 argument\n");
200 return 0;
201 }
202
203 SkFILEWStream ostream(FLAGS_output[0]);
204 if (!ostream.isValid()) {
205 SkDebugf("Can't create output file %s\n", FLAGS_output[0]);
206 return -1;
207 }
208 ostream.write(data->data(), data->size());
209 return 0;
210 }
211