#include "footage.h"

#include <QDebug>
#include <QtMath>
#include <QPainter>
#include "io/previewgenerator.h"

extern "C" {
	#include <libavformat/avformat.h>
}

#include "project/clip.h"

Footage::Footage() : ready(false), preview_gen(NULL), invalid(false), in(0), out(0) {
    ready_lock.lock();
}

Footage::~Footage() {
    reset();
}

void Footage::reset() {
	if (preview_gen != NULL) {
		preview_gen->cancel();
		preview_gen->wait();
    }
    video_tracks.clear();
    audio_tracks.clear();
    ready = false;
}

long Footage::get_length_in_frames(double frame_rate) {
    if (length >= 0) return qFloor(((double) length / (double) AV_TIME_BASE) * frame_rate);
    return 0;
}

FootageStream* Footage::get_stream_from_file_index(bool video, int index) {
    if (video) {
        for (int i=0;i<video_tracks.size();i++) {
            if (video_tracks.at(i).file_index == index) {
                return &video_tracks[i];
            }
        }
    } else {
        for (int i=0;i<audio_tracks.size();i++) {
            if (audio_tracks.at(i).file_index == index) {
                return &audio_tracks[i];
            }
        }
    }
    return NULL;
}

void FootageStream::make_square_thumb() {
    // generate square version for QListView?
    int square_size = qMax(video_preview.width(), video_preview.height());
    QPixmap pixmap(square_size, square_size);
    pixmap.fill(Qt::transparent);
    QPainter p(&pixmap);
    int diff = (video_preview.width() - video_preview.height())>>1;
    int sqx = (diff < 0) ? -diff : 0;
    int sqy = (diff > 0) ? diff : 0;
    p.drawImage(sqx, sqy, video_preview);
    video_preview_square = QIcon(pixmap);
}