109 lines
2.3 KiB
C++
109 lines
2.3 KiB
C++
#include "ffmpegframecache.h"
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#include <QDateTime>
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#include <QDebug>
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QMutex FFmpegFrameCache::pool_lock_;
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QList<Frame*> FFmpegFrameCache::frame_pool_;
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Frame *FFmpegFrameCache::Client::append(const VideoRenderingParams& params)
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{
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Frame* f = FFmpegFrameCache::Get(params);
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frames_.append({f, QDateTime::currentMSecsSinceEpoch()});
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return f;
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}
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void FFmpegFrameCache::Client::clear()
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{
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foreach (const CachedFrame& cf, frames_) {
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FFmpegFrameCache::Release(cf.frame);
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}
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frames_.clear();
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}
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bool FFmpegFrameCache::Client::isEmpty() const
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{
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return frames_.isEmpty();
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}
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Frame *FFmpegFrameCache::Client::first() const
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{
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return frames_.first().frame;
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}
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Frame *FFmpegFrameCache::Client::at(int i) const
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{
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return frames_.at(i).frame;
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}
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Frame *FFmpegFrameCache::Client::last() const
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{
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return frames_.last().frame;
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}
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int FFmpegFrameCache::Client::size() const
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{
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return frames_.size();
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}
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void FFmpegFrameCache::Client::accessedFirst()
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{
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frames_.first().accessed = QDateTime::currentMSecsSinceEpoch();
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}
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void FFmpegFrameCache::Client::accessedLast()
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{
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frames_.last().accessed = QDateTime::currentMSecsSinceEpoch();
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}
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void FFmpegFrameCache::Client::accessed(int i)
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{
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frames_[i].accessed = QDateTime::currentMSecsSinceEpoch();
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}
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void FFmpegFrameCache::Client::remove_old_frames(qint64 older_than)
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{
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int counter = 0;
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while (!frames_.isEmpty() && frames_.first().accessed < older_than) {
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FFmpegFrameCache::Release(frames_.takeFirst().frame);
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counter++;
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}
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qDebug() << " * Removed" << counter << "frames";
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}
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Frame* FFmpegFrameCache::Get(const VideoRenderingParams ¶ms)
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{
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QMutexLocker locker(&pool_lock_);
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// See if we have a frame matching this description in the pool
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for (int i=0;i<frame_pool_.size();i++) {
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if (frame_pool_.at(i)->width() == params.width()
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&& frame_pool_.at(i)->height() == params.height()
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&& frame_pool_.at(i)->format() == params.format()) {
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return frame_pool_.takeAt(i);
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}
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}
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qDebug() << "Nothing in frame pool existed, have to create new...";
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// Otherwise we'll need to create one
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Frame* f = new Frame();
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f->set_width(params.width());
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f->set_height(params.height());
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f->set_format(params.format());
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f->allocate();
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return f;
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}
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void FFmpegFrameCache::Release(Frame *f)
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{
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QMutexLocker locker(&pool_lock_);
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frame_pool_.append(f);
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}
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