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Still unstable, but maybe better?

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This commit is contained in:
Zach Fox 2016-11-11 16:14:18 -08:00
parent fc21cae904
commit 25471d9fae
2 changed files with 66 additions and 45 deletions
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108
interface/src/Application.cpp
View file

@ -5432,8 +5432,8 @@ void Application::toggleLogDialog() {
// The frame will take too long to pack, the timer slot will
// not execute properly, and the GIF will appear sped-up.
// This is unacceptable and is probably a blocker for release.
#define SNAPSNOT_ANIMATED_WIDTH (300)
#define SNAPSNOT_ANIMATED_FRAMERATE_FPS (50) // This value should divide evenly into 100
#define SNAPSNOT_ANIMATED_WIDTH (400)
#define SNAPSNOT_ANIMATED_FRAMERATE_FPS (25) // This value should divide evenly into 100
#define SNAPSNOT_ANIMATED_DURATION_SECS (3)
#define SNAPSNOT_ANIMATED_FRAME_DELAY_MSEC (1000/SNAPSNOT_ANIMATED_FRAMERATE_FPS)
@ -5451,60 +5451,80 @@ void Application::takeSnapshot(bool notify, float aspectRatio) {
QString path = Snapshot::saveSnapshot(getActiveDisplayPlugin()->getScreenshot(aspectRatio));
// If we're in the middle of capturing a GIF...
if (_currentAnimatedSnapshotFrame != 0)
if (_animatedSnapshotFirstFrameTimestamp != 0)
{
// Notify the window scripting interface that we've taken a Snapshot
emit DependencyManager::get<WindowScriptingInterface>()->snapshotTaken(path, notify);
// Protect against clobbering it and return immediately.
// (Perhaps with a "snapshot failed" message?
return;
}
else
{
// Reset the current animated snapshot frame
qApp->_animatedSnapshotFirstFrameTimestamp = 0;
// Reset the current animated snapshot frame timestamp
qApp->_animatedSnapshotTimestamp = 0;
// Reset the current animated snapshot frame
_currentAnimatedSnapshotFrame = 0;
// Change the extension of the future GIF saved snapshot file to "gif"
qApp->_animatedSnapshotPath = path.replace("jpg", "gif");
// Change the extension of the future GIF saved snapshot file to "gif"
_animatedSnapshotPath = path.replace("jpg", "gif");
// Ensure the snapshot timer is Precise (attempted millisecond precision)
qApp->animatedSnapshotTimer.setTimerType(Qt::PreciseTimer);
// Ensure the snapshot timer is Precise (attempted millisecond precision)
animatedSnapshotTimer.setTimerType(Qt::PreciseTimer);
// Connect the animatedSnapshotTimer QTimer to the lambda slot function
connect(&(qApp->animatedSnapshotTimer), &QTimer::timeout, [=] {
// Get a screenshot from the display, then scale the screenshot down,
// then convert it to the image format the GIF library needs,
// then save all that to the QImage named "frame"
QImage frame(qApp->getActiveDisplayPlugin()->getScreenshot(aspectRatio));
frame = frame.scaledToWidth(SNAPSNOT_ANIMATED_WIDTH);
frame = frame.convertToFormat(QImage::Format_RGBA8888);
// Connect the animatedSnapshotTimer QTimer to the lambda slot function
connect(&(qApp->animatedSnapshotTimer), &QTimer::timeout, [=] {
// Get a screenshot from the display, then scale the screenshot down,
// then convert it to the image format the GIF library needs,
// then save all that to the QImage named "frame"
QImage frame(qApp->getActiveDisplayPlugin()->getScreenshot(aspectRatio));
frame = frame.scaledToWidth(SNAPSNOT_ANIMATED_WIDTH).convertToFormat(QImage::Format_RGBA8888);
// If this is the first frame...
if (qApp->_animatedSnapshotTimestamp == 0)
{
// Write out the header and beginning of the GIF file
GifBegin(&(qApp->_animatedSnapshotGifWriter), qPrintable(qApp->_animatedSnapshotPath), frame.width(), frame.height(), SNAPSNOT_ANIMATED_FRAME_DELAY_MSEC / 10);
// Write the first to the gif
GifWriteFrame(&(qApp->_animatedSnapshotGifWriter),
(uint8_t*)frame.bits(),
frame.width(),
frame.height(),
SNAPSNOT_ANIMATED_FRAME_DELAY_MSEC / 10);
// Record the current frame timestamp
qApp->_animatedSnapshotTimestamp = QDateTime::currentMSecsSinceEpoch();
qApp->_animatedSnapshotFirstFrameTimestamp = qApp->_animatedSnapshotTimestamp;
}
else
{
// Write the frame to the gif
GifWriteFrame(&(qApp->_animatedSnapshotGifWriter),
(uint8_t*)frame.bits(),
frame.width(),
frame.height(),
round(((float)(QDateTime::currentMSecsSinceEpoch() - qApp->_animatedSnapshotTimestamp)) / 10));
// Record the current frame timestamp
qApp->_animatedSnapshotTimestamp = QDateTime::currentMSecsSinceEpoch();
// If this is the first frame...
if (qApp->_currentAnimatedSnapshotFrame == 0)
{
// Write out the header and beginning of the GIF file
GifBegin(&(qApp->_animatedSnapshotGifWriter), qPrintable(qApp->_animatedSnapshotPath), frame.width(), frame.height(), SNAPSNOT_ANIMATED_FRAME_DELAY_MSEC / 10, 8, false);
}
// If that was the last frame...
if ((qApp->_animatedSnapshotTimestamp - qApp->_animatedSnapshotFirstFrameTimestamp) >= (SNAPSNOT_ANIMATED_DURATION_SECS * 1000))
{
// Reset the current frame timestamp
qApp->_animatedSnapshotTimestamp = 0;
qApp->_animatedSnapshotFirstFrameTimestamp = 0;
// Write out the end of the GIF
GifEnd(&(qApp->_animatedSnapshotGifWriter));
// Notify the Window Scripting Interface that the snapshot was taken
emit DependencyManager::get<WindowScriptingInterface>()->snapshotTaken(qApp->_animatedSnapshotPath, false);
// Stop the snapshot QTimer
qApp->animatedSnapshotTimer.stop();
}
}
});
// Write the frame to the gif
GifWriteFrame(&(qApp->_animatedSnapshotGifWriter), (uint8_t*)frame.bits(), frame.width(), frame.height(), SNAPSNOT_ANIMATED_FRAME_DELAY_MSEC/10, 8, false);
// Increment the current snapshot frame count
qApp->_currentAnimatedSnapshotFrame++;
// If that was the last frame...
if (qApp->_currentAnimatedSnapshotFrame >= SNAPSNOT_ANIMATED_NUM_FRAMES)
{
// Reset the current frame number
qApp->_currentAnimatedSnapshotFrame = 0;
// Write out the end of the GIF
GifEnd(&(qApp->_animatedSnapshotGifWriter));
// Notify the Window Scripting Interface that the snapshot was taken
emit DependencyManager::get<WindowScriptingInterface>()->snapshotTaken(qApp->_animatedSnapshotPath, false);
// Stop the snapshot QTimer
qApp->animatedSnapshotTimer.stop();
}
});
// Start the animatedSnapshotTimer QTimer - argument for this is in milliseconds
animatedSnapshotTimer.start(SNAPSNOT_ANIMATED_FRAME_DELAY_MSEC);
// Start the animatedSnapshotTimer QTimer - argument for this is in milliseconds
qApp->animatedSnapshotTimer.start(SNAPSNOT_ANIMATED_FRAME_DELAY_MSEC);
}
});
}
void Application::shareSnapshot(const QString& path) {

3
interface/src/Application.h
View file

@ -613,7 +613,8 @@ private:
QTimer animatedSnapshotTimer;
GifWriter _animatedSnapshotGifWriter;
uint32_t _currentAnimatedSnapshotFrame { 0 };
quint64 _animatedSnapshotTimestamp{ 0 };
quint64 _animatedSnapshotFirstFrameTimestamp{ 0 };
QString _animatedSnapshotPath;
};