QTfrontend/util/LibavInteraction.cpp
author alfadur
Sat, 11 Jul 2020 20:33:23 +0300
changeset 15719 08e556cad305
parent 14631 92ebe33c5eb6
permissions -rw-r--r--
improve sentry jumping out
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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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                continue;
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            format.codecs.push_back(&*codec);
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            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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        ext.truncate(strcspn(pFormat->extensions, ","));
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        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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}
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   216
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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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diff changeset
   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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   238
{
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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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diff changeset
   243
    {
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diff changeset
   244
        if (codec->isRecommended)
7897
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parents:
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   245
        {
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parents:
diff changeset
   246
            if (codec->isAudio)
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parents:
diff changeset
   247
                pACodecs->addItem(codec->longName, codec->shortName);
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parents:
diff changeset
   248
            else
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parents:
diff changeset
   249
                pVCodecs->addItem(codec->longName, codec->shortName);
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   250
        }
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   251
    }
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parents:
diff changeset
   252
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parents:
diff changeset
   253
    // remember where to place separators between recomended and other codecs
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parents:
diff changeset
   254
    int vsep = pVCodecs->count();
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parents:
diff changeset
   255
    int asep = pACodecs->count();
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parents:
diff changeset
   256
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parents:
diff changeset
   257
    // insert remaining codecs
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parents:
diff changeset
   258
    foreach(Codec * codec, format.codecs)
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parents:
diff changeset
   259
    {
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957db6db1a49 Clean up code a bit in LibavInteraction
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parents: 13286
diff changeset
   260
        if (!codec->isRecommended)
7897
5e7c0810f365 libav name refactor
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parents:
diff changeset
   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
5e7c0810f365 libav name refactor
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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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parents:
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);
5e7c0810f365 libav name refactor
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parents:
diff changeset
   272
    if (asep != 0 && asep != pACodecs->count())
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   273
        pACodecs->insertSeparator(asep);
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parents:
diff changeset
   274
}
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parents:
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   275
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parents:
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   276
QString LibavInteraction::getExtension(const QString & format)
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parents:
diff changeset
   277
{
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parents:
diff changeset
   278
    return formats[format].extension;
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parents:
diff changeset
   279
}
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parents:
diff changeset
   280
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parents:
diff changeset
   281
// get information abaout file (duration, resolution etc) in multiline string
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koda
parents:
diff changeset
   282
QString LibavInteraction::getFileInfo(const QString & filepath)
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   283
{
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parents:
diff changeset
   284
    AVFormatContext* pContext = NULL;
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koda
parents:
diff changeset
   285
    QByteArray utf8path = filepath.toUtf8();
5e7c0810f365 libav name refactor
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parents:
diff changeset
   286
    if (avformat_open_input(&pContext, utf8path.data(), NULL, NULL) < 0)
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koda
parents:
diff changeset
   287
        return "";
5e7c0810f365 libav name refactor
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parents:
diff changeset
   288
    if (avformat_find_stream_info(pContext, NULL) < 0)
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   289
        return "";
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parents:
diff changeset
   290
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parents:
diff changeset
   291
    int s = float(pContext->duration)/AV_TIME_BASE;
12239
8db93a3a29dc Use standard units and abbreviations in frontend
Wuzzy <almikes@aol.com>
parents: 11852
diff changeset
   292
    //: Duration in minutes and seconds (SI units)
8db93a3a29dc Use standard units and abbreviations in frontend
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parents: 11852
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++)
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   295
    {
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   296
        AVStream* pStream = pContext->streams[i];
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   297
        if (!pStream)
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   298
            continue;
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   299
        AVCodecContext* pCodec = pContext->streams[i]->codec;
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   300
        if (!pCodec)
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   301
            continue;
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koda
parents:
diff changeset
   302
13286
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13226
diff changeset
   303
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13226
diff changeset
   304
        AVCodec* pDecoder = avcodec_find_decoder(pCodec->codec_id);
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
Wuzzy <Wuzzy2@mail.ru>
parents: 13226
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
koda
parents:
diff changeset
   310
                float fps = float(pStream->avg_frame_rate.num)/pStream->avg_frame_rate.den;
13286
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13226
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
Wuzzy <Wuzzy2@mail.ru>
parents: 13226
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);
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13226
diff changeset
   313
            }
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
Wuzzy <Wuzzy2@mail.ru>
parents: 13226
diff changeset
   314
            else
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
Wuzzy <Wuzzy2@mail.ru>
parents: 13226
diff changeset
   315
            {
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13226
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: 13226
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)
13286
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
Wuzzy <Wuzzy2@mail.ru>
parents: 13226
diff changeset
   321
        {
7897
5e7c0810f365 libav name refactor
koda
parents:
diff changeset
   322
            desc += tr("Audio: ");
13286
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
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parents: 13226
diff changeset
   323
            desc += decoderName;
1fbf2ac1f13e Videos frontend page: Locale-aware text formatting
Wuzzy <Wuzzy2@mail.ru>
parents: 13226
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)
13226
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12239
diff changeset
   331
    {
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12239
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: 12239
diff changeset
   333
        // and parse it here so the key names can be localized.
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12239
diff changeset
   334
        desc += QString("\n");
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12239
diff changeset
   335
        QStringList strings = QString(pComment->value).split('\n');
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12239
diff changeset
   336
        QString sPlayer, sTheme, sMap, sRecord;
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12239
diff changeset
   337
        for(int i=0; i < strings.count(); i++)
4028d7f85233 Make video metadata strings translatable in frontend
Wuzzy <Wuzzy2@mail.ru>
parents: 12239
diff changeset
   338
        {
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12239
diff changeset
   339
            QString s = strings.at(i);
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12239
diff changeset
   340
            // Original key names are in English, like:
4028d7f85233 Make video metadata strings translatable in frontend
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parents: 12239
diff changeset
   341
            //     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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   375
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void LibavInteraction::fillCodecs(const QString & format, QComboBox * pVCodecs, QComboBox * pACodecs)
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{
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   378
    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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   385
    Q_UNUSED(format);
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   386
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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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   393
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    return QString();
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   395
}
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   396
#endif
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   397
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   398
LibavInteraction & LibavInteraction::instance()
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{
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    static LibavInteraction instance;
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   401
    return instance;
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}