50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
#include "media.h"
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#include <QDebug>
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extern "C" {
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#include <libavformat/avformat.h>
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}
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Media::Media() {
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}
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Media::~Media() {
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for (int i=0;i<video_tracks.size();i++) {
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delete video_tracks.at(i);
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}
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for (int i=0;i<audio_tracks.size();i++) {
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delete audio_tracks.at(i);
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}
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video_tracks.clear();
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audio_tracks.clear();
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}
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long Media::get_length_in_frames(float frame_rate) {
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return ceil((float) length / (float) AV_TIME_BASE * frame_rate);
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}
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MediaStream* Media::get_stream_from_file_index(int index) {
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for (int i=0;i<video_tracks.size();i++) {
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if (video_tracks.at(i)->file_index == index) {
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return video_tracks.at(i);
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}
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}
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for (int i=0;i<audio_tracks.size();i++) {
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if (audio_tracks.at(i)->file_index == index) {
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return audio_tracks.at(i);
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}
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}
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return NULL;
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}
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int guess_layout_from_channels(int channel_count) {
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if (channel_count == 1) {
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return AV_CH_LAYOUT_MONO;
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} else {
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qDebug() << "[WARNING] Could not detect audio channel layout - assuming stereo";
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return AV_CH_LAYOUT_STEREO;
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}
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}
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