blob: 398ef211efe429c161fd5fd63fa1d74fb9cbcdfa [file] [log] [blame]
/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/codec/SkCodec.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkData.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "include/utils/SkAnimCodecPlayer.h"
#include "src/core/SkOSFile.h"
#include "tools/Resources.h"
#include "tools/ToolUtils.h"
#include "tools/flags/CommandLineFlags.h"
#include "tools/timer/TimeUtils.h"
#include <memory>
#include <utility>
#include <vector>
static DEFINE_string(animatedGif, "images/test640x479.gif", "Animated gif in resources folder");
class AnimatedGifGM : public skiagm::GM {
private:
std::unique_ptr<SkCodec> fCodec;
int fFrame;
double fNextUpdate;
int fTotalFrames;
std::vector<SkCodec::FrameInfo> fFrameInfos;
std::vector<SkBitmap> fFrames;
void drawFrame(SkCanvas* canvas, int frameIndex) {
// FIXME: Create from an Image/ImageGenerator?
if (frameIndex >= (int) fFrames.size()) {
fFrames.resize(frameIndex + 1);
}
SkBitmap& bm = fFrames[frameIndex];
if (!bm.getPixels()) {
const SkImageInfo info = fCodec->getInfo().makeColorType(kN32_SkColorType);
bm.allocPixels(info);
SkCodec::Options opts;
opts.fFrameIndex = frameIndex;
const int requiredFrame = fFrameInfos[frameIndex].fRequiredFrame;
if (requiredFrame != SkCodec::kNoFrame) {
SkASSERT(requiredFrame >= 0
&& static_cast<size_t>(requiredFrame) < fFrames.size());
SkBitmap& requiredBitmap = fFrames[requiredFrame];
// For simplicity, do not try to cache old frames
if (requiredBitmap.getPixels() &&
ToolUtils::copy_to(&bm, requiredBitmap.colorType(), requiredBitmap)) {
opts.fPriorFrame = requiredFrame;
}
}
if (SkCodec::kSuccess != fCodec->getPixels(info, bm.getPixels(),
bm.rowBytes(), &opts)) {
SkDebugf("Could not getPixels for frame %i: %s", frameIndex, FLAGS_animatedGif[0]);
return;
}
}
canvas->drawImage(bm.asImage(), 0, 0);
}
public:
AnimatedGifGM()
: fFrame(0)
, fNextUpdate (-1)
, fTotalFrames (-1) {}
private:
SkString onShortName() override {
return SkString("animatedGif");
}
SkISize onISize() override {
if (this->initCodec()) {
SkISize dim = fCodec->getInfo().dimensions();
// Wide enough to display all the frames.
dim.fWidth *= fTotalFrames;
// Tall enough to show the row of frames plus an animating version.
dim.fHeight *= 2;
return dim;
}
return SkISize::Make(640, 480);
}
bool initCodec() {
if (fCodec) {
return true;
}
if (FLAGS_animatedGif.isEmpty()) {
SkDebugf("Nothing specified for --animatedGif!");
return false;
}
std::unique_ptr<SkStream> stream(GetResourceAsStream(FLAGS_animatedGif[0]));
if (!stream) {
return false;
}
fCodec = SkCodec::MakeFromStream(std::move(stream));
if (!fCodec) {
return false;
}
fFrame = 0;
fFrameInfos = fCodec->getFrameInfo();
fTotalFrames = fFrameInfos.size();
return true;
}
DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
if (!this->initCodec()) {
errorMsg->printf("Could not create codec from %s", FLAGS_animatedGif[0]);
return DrawResult::kFail;
}
canvas->save();
for (int frameIndex = 0; frameIndex < fTotalFrames; frameIndex++) {
this->drawFrame(canvas, frameIndex);
canvas->translate(SkIntToScalar(fCodec->getInfo().width()), 0);
}
canvas->restore();
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(0, SkIntToScalar(fCodec->getInfo().height()));
this->drawFrame(canvas, fFrame);
return DrawResult::kOk;
}
bool onAnimate(double nanos) override {
if (!fCodec || fTotalFrames == 1) {
return false;
}
double secs = TimeUtils::NanosToMSec(nanos) * .1;
if (fNextUpdate < double(0)) {
// This is a sentinel that we have not done any updates yet.
// I'm assuming this gets called *after* onOnceBeforeDraw, so our first frame should
// already have been retrieved.
SkASSERT(fFrame == 0);
fNextUpdate = secs + fFrameInfos[fFrame].fDuration;
return true;
}
if (secs < fNextUpdate) {
return true;
}
while (secs >= fNextUpdate) {
// Retrieve the next frame.
fFrame++;
if (fFrame == fTotalFrames) {
fFrame = 0;
}
// Note that we loop here. This is not safe if we need to draw the intermediate frame
// in order to draw correctly.
fNextUpdate += fFrameInfos[fFrame].fDuration;
}
return true;
}
};
DEF_GM(return new AnimatedGifGM);
static std::unique_ptr<SkCodec> load_codec(const char filename[]) {
return SkCodec::MakeFromData(SkData::MakeFromFileName(filename));
}
class AnimCodecPlayerGM : public skiagm::GM {
private:
std::vector<std::unique_ptr<SkAnimCodecPlayer> > fPlayers;
uint32_t fBaseMSec = 0;
public:
AnimCodecPlayerGM() {
const char* root = "/skia/anim/";
SkOSFile::Iter iter(root);
SkString path;
while (iter.next(&path)) {
SkString completepath;
completepath.printf("%s%s", root, path.c_str());
auto codec = load_codec(completepath.c_str());
if (codec) {
fPlayers.push_back(std::make_unique<SkAnimCodecPlayer>(std::move(codec)));
}
}
}
private:
SkString onShortName() override {
return SkString("AnimCodecPlayer");
}
SkISize onISize() override {
return { 1024, 768 };
}
void onDraw(SkCanvas* canvas) override {
canvas->scale(0.25f, 0.25f);
for (auto& p : fPlayers) {
canvas->drawImage(p->getFrame(), 0, 0);
canvas->translate(p->dimensions().width(), 0);
}
}
bool onAnimate(double nanos) override {
if (fBaseMSec == 0) {
fBaseMSec = TimeUtils::NanosToMSec(nanos);
}
for (auto& p : fPlayers) {
(void)p->seek(TimeUtils::NanosToMSec(nanos) - fBaseMSec);
}
return true;
}
};
DEF_GM(return new AnimCodecPlayerGM);
class AnimCodecPlayerExifGM : public skiagm::GM {
const char* fPath;
SkISize fSize = SkISize::MakeEmpty();
std::unique_ptr<SkAnimCodecPlayer> fPlayer;
std::vector<SkCodec::FrameInfo> fFrameInfos;
void init() {
if (!fPlayer) {
auto data = GetResourceAsData(fPath);
if (!data) return;
auto codec = SkCodec::MakeFromData(std::move(data));
fFrameInfos = codec->getFrameInfo();
fPlayer = std::make_unique<SkAnimCodecPlayer>(std::move(codec));
if (!fPlayer) return;
// We'll draw one of each frame, so make it big enough to hold them all
// in a grid. The grid will be roughly square, with "factor" frames per
// row and up to "factor" rows.
const size_t count = fFrameInfos.size();
const float root = sqrt((float) count);
const int factor = sk_float_ceil2int(root);
auto imageSize = fPlayer->dimensions();
fSize.fWidth = imageSize.fWidth * factor;
fSize.fHeight = imageSize.fHeight * sk_float_ceil2int((float) count / (float) factor);
}
}
SkString onShortName() override {
return SkStringPrintf("AnimCodecPlayerExif_%s", strrchr(fPath, '/') + 1);
}
SkISize onISize() override {
this->init();
return fSize;
}
void onDraw(SkCanvas* canvas) override {
this->init();
if (!fPlayer) return;
const float root = sqrt((float) fFrameInfos.size());
const int factor = sk_float_ceil2int(root);
auto dimensions = fPlayer->dimensions();
uint32_t duration = 0;
for (int frame = 0; duration < fPlayer->duration(); frame++) {
SkAutoCanvasRestore acr(canvas, true);
const int xTranslate = (frame % factor) * dimensions.width();
const int yTranslate = (frame / factor) * dimensions.height();
canvas->translate(SkIntToScalar(xTranslate), SkIntToScalar(yTranslate));
auto image = fPlayer->getFrame();
canvas->drawImage(image, 0, 0);
duration += fFrameInfos[frame].fDuration;
fPlayer->seek(duration);
}
}
public:
AnimCodecPlayerExifGM(const char* path)
: fPath(path)
{}
~AnimCodecPlayerExifGM() override = default;
};
DEF_GM(return new AnimCodecPlayerExifGM("images/required.webp");)
DEF_GM(return new AnimCodecPlayerExifGM("images/required.gif");)
DEF_GM(return new AnimCodecPlayerExifGM("images/stoplight_h.webp");)