QTfrontend/util/LibavInteraction.cpp
author Wuzzy <Wuzzy2@mail.ru>
Thu, 25 Apr 2019 23:01:05 +0200
changeset 14844 e239378a9400
parent 14636 92ebe33c5eb6
permissions -rw-r--r--
Prevent entering “/”, “\” and “:” in team and scheme names. The name of teams and schems is saved in the file name itself, so these characters would cause trouble as they are used in path names in Linux and Windows.
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/*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#include "LibavInteraction.h"
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#ifdef VIDEOREC
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extern "C"
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{
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#include "libavcodec/avcodec.h"
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#include "libavformat/avformat.h"
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#include "libavutil/avutil.h"
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}
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#include <QVector>
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#include <QList>
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#include <QComboBox>
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#include "HWApplication.h"
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// compatibility section
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#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54, 8, 0)
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#define av_codec_is_encoder(x)          x->encode
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#endif
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#if LIBAVCODEC_VERSION_MAJOR < 55
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#define AVCodecID                       CodecID
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#endif
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#if LIBAVFORMAT_VERSION_MAJOR < 54
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#define avformat_find_stream_info(x, y) av_find_stream_info(x)
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#define avformat_close_input(x)         av_close_input_file(*(x))
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#endif
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#if LIBAVUTIL_VERSION_MAJOR < 54
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#define AVPixelFormat                   PixelFormat
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#define AV_PIX_FMT_YUV420P              PIX_FMT_YUV420P
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#endif
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struct Codec
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{
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    AVCodecID id;
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    bool isAudio;
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    QString shortName; // used for identification
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    QString longName; // used for displaying to user
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    bool isRecommended;
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};
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struct Format
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{
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    QString shortName;
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    QString longName;
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    bool isRecommended;
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    QString extension;
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    QVector<Codec*> codecs;
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};
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QList<Codec> codecs;
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QMap<QString,Format> formats;
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// test if given format supports given codec
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bool FormatQueryCodec(AVOutputFormat *ofmt, enum AVCodecID codec_id)
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{
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#if LIBAVFORMAT_VERSION_MAJOR >= 54
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    return avformat_query_codec(ofmt, codec_id, FF_COMPLIANCE_NORMAL) == 1;
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#else
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    if (ofmt->codec_tag)
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        return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
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    return codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec;
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#endif
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}
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LibavInteraction::LibavInteraction() : QObject()
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{
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    // initialize libav and register all codecs and formats
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    av_register_all();
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    // get list of all codecs
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    AVCodec* pCodec = NULL;
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    while ((pCodec = av_codec_next(pCodec)))
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    {
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        if (!av_codec_is_encoder(pCodec))
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            continue;
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        if (pCodec->type != AVMEDIA_TYPE_VIDEO && pCodec->type != AVMEDIA_TYPE_AUDIO)
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            continue;
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        // this encoders seems to be buggy
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        if (strcmp(pCodec->name, "rv10") == 0 || strcmp(pCodec->name, "rv20") == 0)
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            continue;
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        // this encoder is experimental (as of Jan 17, 2019)
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        if (strcmp(pCodec->name, "libaom-av1") == 0)
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            continue;
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        // doesn't support stereo sound
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        if (strcmp(pCodec->name, "real_144") == 0)
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            continue;
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        if (!pCodec->long_name || strlen(pCodec->long_name) == 0)
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            continue;
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        if (pCodec->type == AVMEDIA_TYPE_VIDEO)
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        {
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            if (pCodec->supported_framerates != NULL)
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                continue;
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            // check if codec supports yuv 4:2:0 format
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            if (!pCodec->pix_fmts)
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                continue;
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            bool yuv420Supported = false;
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            for (const enum AVPixelFormat* pfmt = pCodec->pix_fmts; *pfmt != -1; pfmt++)
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                if (*pfmt == AV_PIX_FMT_YUV420P)
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                {
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                    yuv420Supported = true;
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                    break;
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                }
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            if (!yuv420Supported)
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                continue;
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        }
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        if (pCodec->type == AVMEDIA_TYPE_AUDIO)
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        {
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            // check if codec supports signed 16-bit format
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            if (!pCodec->sample_fmts)
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                continue;
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            bool s16Supported = false;
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            for (const enum AVSampleFormat* pfmt = pCodec->sample_fmts; *pfmt != -1; pfmt++)
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                if (*pfmt == AV_SAMPLE_FMT_S16)
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                {
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                    s16Supported = true;
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                    break;
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                }
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            if (!s16Supported)
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                continue;
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        }
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        // add codec to list of codecs
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        codecs.push_back(Codec());
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        Codec & codec = codecs.back();
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        codec.id = pCodec->id;
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        codec.isAudio = pCodec->type == AVMEDIA_TYPE_AUDIO;
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        codec.shortName = pCodec->name;
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        codec.longName = pCodec->long_name;
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        codec.isRecommended = false;
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        if (strcmp(pCodec->name, "libx264") == 0)
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        {
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            codec.longName = "H.264/MPEG-4 Part 10 AVC (x264)";
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            codec.isRecommended = true;
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        }
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        else if (strcmp(pCodec->name, "libxvid") == 0)
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        {
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            codec.longName = "MPEG-4 Part 2 (Xvid)";
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            codec.isRecommended = true;
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        }
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        else if (strcmp(pCodec->name, "libmp3lame") == 0)
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        {
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            codec.longName = "MP3 (MPEG audio layer 3) (LAME)";
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            codec.isRecommended = true;
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        }
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        else
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            codec.longName = pCodec->long_name;
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   176
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        if (strcmp(pCodec->name, "mpeg4") == 0 || strcmp(pCodec->name, "ac3_fixed") == 0)
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            codec.isRecommended = true;
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    }
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    // get list of all formats
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    AVOutputFormat* pFormat = NULL;
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    while ((pFormat = av_oformat_next(pFormat)))
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    {
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        if (!pFormat->extensions)
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            continue;
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        // skip some strange formats to not confuse users
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   189
        if (strstr(pFormat->long_name, "raw"))
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            continue;
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   191
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        Format format;
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        bool hasVideoCodec = false;
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        for (QList<Codec>::iterator codec = codecs.begin(); codec != codecs.end(); ++codec)
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        {
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   196
            if (!FormatQueryCodec(pFormat, codec->id))
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   197
                continue;
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   198
            format.codecs.push_back(&*codec);
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   199
            if (!codec->isAudio)
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                hasVideoCodec = true;
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        }
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        if (!hasVideoCodec)
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            continue;
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   204
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        QString ext(pFormat->extensions);
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   206
        ext.truncate(strcspn(pFormat->extensions, ","));
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   207
        format.extension = ext;
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   208
        format.shortName = pFormat->name;
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   209
        format.longName = QString("%1 (*.%2)").arg(pFormat->long_name).arg(ext);
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        format.isRecommended = strcmp(pFormat->name, "mp4") == 0 || strcmp(pFormat->name, "avi") == 0;
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   212
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        formats[pFormat->name] = format;
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   214
    }
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   215
}
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void LibavInteraction::fillFormats(QComboBox * pFormats)
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{
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    // first insert recomended formats
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    foreach(const Format & format, formats)
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   221
        if (format.isRecommended)
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   222
            pFormats->addItem(format.longName, format.shortName);
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   223
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   224
    // remember where to place separator between recomended and other formats
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   225
    int sep = pFormats->count();
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   226
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    // insert remaining formats
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   228
    foreach(const Format & format, formats)
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   229
        if (!format.isRecommended)
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   230
            pFormats->addItem(format.longName, format.shortName);
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   231
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   232
    // insert separator if necessary
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   233
    if (sep != 0 && sep != pFormats->count())
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   234
        pFormats->insertSeparator(sep);
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   235
}
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   236
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   237
void LibavInteraction::fillCodecs(const QString & fmt, QComboBox * pVCodecs, QComboBox * pACodecs)
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{
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   239
    Format & format = formats[fmt];
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   240
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   241
    // first insert recomended codecs
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   242
    foreach(Codec * codec, format.codecs)
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   243
    {
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   244
        if (codec->isRecommended)
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   245
        {
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parents:
diff changeset
   246
            if (codec->isAudio)
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   247
                pACodecs->addItem(codec->longName, codec->shortName);
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   248
            else
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   249
                pVCodecs->addItem(codec->longName, codec->shortName);
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   250
        }
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   251
    }
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   252
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   253
    // remember where to place separators between recomended and other codecs
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diff changeset
   254
    int vsep = pVCodecs->count();
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   255
    int asep = pACodecs->count();
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parents:
diff changeset
   256
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   257
    // insert remaining codecs
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parents:
diff changeset
   258
    foreach(Codec * codec, format.codecs)
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diff changeset
   259
    {
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diff changeset
   260
        if (!codec->isRecommended)
7897
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parents:
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   261
        {
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parents:
diff changeset
   262
            if (codec->isAudio)
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parents:
diff changeset
   263
                pACodecs->addItem(codec->longName, codec->shortName);
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parents:
diff changeset
   264
            else
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parents:
diff changeset
   265
                pVCodecs->addItem(codec->longName, codec->shortName);
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parents:
diff changeset
   266
        }
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diff changeset
   267
    }
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parents:
diff changeset
   268
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parents:
diff changeset
   269
    // insert separators if necessary
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parents:
diff changeset
   270
    if (vsep != 0 && vsep != pVCodecs->count())
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parents:
diff changeset
   271
        pVCodecs->insertSeparator(vsep);
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parents:
diff changeset
   272
    if (asep != 0 && asep != pACodecs->count())
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parents:
diff changeset
   273
        pACodecs->insertSeparator(asep);
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parents:
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   274
}
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   275
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   276
QString LibavInteraction::getExtension(const QString & format)
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   277
{
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parents:
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   278
    return formats[format].extension;
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   279
}
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   280
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   281
// get information abaout file (duration, resolution etc) in multiline string
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   282
QString LibavInteraction::getFileInfo(const QString & filepath)
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diff changeset
   283
{
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diff changeset
   284
    AVFormatContext* pContext = NULL;
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parents:
diff changeset
   285
    QByteArray utf8path = filepath.toUtf8();
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parents:
diff changeset
   286
    if (avformat_open_input(&pContext, utf8path.data(), NULL, NULL) < 0)
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parents:
diff changeset
   287
        return "";
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parents:
diff changeset
   288
    if (avformat_find_stream_info(pContext, NULL) < 0)
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parents:
diff changeset
   289
        return "";
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diff changeset
   290
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parents:
diff changeset
   291
    int s = float(pContext->duration)/AV_TIME_BASE;
12244
8db93a3a29dc Use standard units and abbreviations in frontend
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parents: 11857
diff changeset
   292
    //: Duration in minutes and seconds (SI units)
8db93a3a29dc Use standard units and abbreviations in frontend
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parents: 11857
diff changeset
   293
    QString desc = tr("Duration: %1min %2s").arg(s/60).arg(s%60) + "\n";
7897
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parents:
diff changeset
   294
    for (int i = 0; i < (int)pContext->nb_streams; i++)
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parents:
diff changeset
   295
    {
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parents:
diff changeset
   296
        AVStream* pStream = pContext->streams[i];
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   297
        if (!pStream)
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koda
parents:
diff changeset
   298
            continue;
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koda
parents:
diff changeset
   299
        AVCodecContext* pCodec = pContext->streams[i]->codec;
5e7c0810f365 libav name refactor
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parents:
diff changeset
   300
        if (!pCodec)
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parents:
diff changeset
   301
            continue;
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parents:
diff changeset
   302
13291
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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diff changeset
   303
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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diff changeset
   304
        AVCodec* pDecoder = avcodec_find_decoder(pCodec->codec_id);
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13231
diff changeset
   305
        QString decoderName = pDecoder ? pDecoder->name : tr("unknown");
7897
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   306
        if (pCodec->codec_type == AVMEDIA_TYPE_VIDEO)
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   307
        {
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   308
            if (pStream->avg_frame_rate.den)
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   309
            {
5e7c0810f365 libav name refactor
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parents:
diff changeset
   310
                float fps = float(pStream->avg_frame_rate.num)/pStream->avg_frame_rate.den;
13291
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13231
diff changeset
   311
                //: Video metadata. %1 = video width, %2 = video height, %3 = frames per second = %4 = decoder name
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13231
diff changeset
   312
                desc += QString(tr("Video: %1x%2, %3 FPS, %4")).arg(pCodec->width).arg(pCodec->height).arg(QLocale().toString(fps, 'f', 2)).arg(decoderName);
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parents: 13231
diff changeset
   313
            }
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13231
diff changeset
   314
            else
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
Wuzzy <Wuzzy2@mail.ru>
parents: 13231
diff changeset
   315
            {
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13231
diff changeset
   316
                //: Video metadata. %1 = video width, %2 = video height, %3 = decoder name
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13231
diff changeset
   317
                desc += QString(tr("Video: %1x%2, %3")).arg(pCodec->width).arg(pCodec->height).arg(decoderName);
7897
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   318
            }
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   319
        }
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   320
        else if (pCodec->codec_type == AVMEDIA_TYPE_AUDIO)
13291
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13231
diff changeset
   321
        {
7897
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   322
            desc += tr("Audio: ");
13291
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13231
diff changeset
   323
            desc += decoderName;
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13231
diff changeset
   324
        }
7897
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   325
        else
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   326
            continue;
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   327
        desc += "\n";
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   328
    }
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   329
    AVDictionaryEntry* pComment = av_dict_get(pContext->metadata, "comment", NULL, 0);
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   330
    if (pComment)
13231
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12244
diff changeset
   331
    {
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12244
diff changeset
   332
        // Video comment. We expect a simple key value storage in a particular format
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12244
diff changeset
   333
        // and parse it here so the key names can be localized.
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12244
diff changeset
   334
        desc += QString("\n");
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12244
diff changeset
   335
        QStringList strings = QString(pComment->value).split('\n');
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12244
diff changeset
   336
        QString sPlayer, sTheme, sMap, sRecord;
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12244
diff changeset
   337
        for(int i=0; i < strings.count(); i++)
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12244
diff changeset
   338
        {
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12244
diff changeset
   339
            QString s = strings.at(i);
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12244
diff changeset
   340
            // Original key names are in English, like:
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            //     Key: Value
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            if (s.startsWith("Player: "))
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                sPlayer = QString(s.mid(8));
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            else if (s.startsWith("Theme: "))
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                sTheme = QString(s.mid(7));
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            else if (s.startsWith("Map: "))
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                sMap = QString(s.mid(5));
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            else if (s.startsWith("Record: "))
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                sRecord = QString(s.mid(8));
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        }
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        if(!sPlayer.isNull())
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            desc += QString(tr("Player: %1")).arg(sPlayer) + "\n";
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        if(!sTheme.isNull())
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            desc += QString(tr("Theme: %1")).arg(sTheme) + "\n";
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        if(!sMap.isNull())
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            desc += QString(tr("Map: %1")).arg(sMap) + "\n";
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        if(!sRecord.isNull())
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            //: As in ‘recording’
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            desc += QString(tr("Record: %1")).arg(sRecord);
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    }
7897
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    avformat_close_input(&pContext);
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    return desc;
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}
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#else
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LibavInteraction::LibavInteraction() : QObject()
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{
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}
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void LibavInteraction::fillFormats(QComboBox * pFormats)
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{
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    Q_UNUSED(pFormats);
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}
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void LibavInteraction::fillCodecs(const QString & format, QComboBox * pVCodecs, QComboBox * pACodecs)
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{
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    Q_UNUSED(format);
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    Q_UNUSED(pVCodecs);
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    Q_UNUSED(pACodecs);
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}
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QString LibavInteraction::getExtension(const QString & format)
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{
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    Q_UNUSED(format);
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    return QString();
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}
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QString LibavInteraction::getFileInfo(const QString & filepath)
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{
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    Q_UNUSED(filepath);
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    return QString();
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}
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#endif
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LibavInteraction & LibavInteraction::instance()
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{
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    static LibavInteraction instance;
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    return instance;
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}