[arch-commits] Commit in performous/trunk (PKGBUILD fix-noisy-sound-output.patch)
Laurent Carlier
lcarlier at nymeria.archlinux.org
Thu May 23 19:50:00 UTC 2013
Date: Thursday, May 23, 2013 @ 21:50:00
Author: lcarlier
Revision: 91561
upgpkg: performous 0.7.0-7
Fix FS#33948 and FS#33949
Added:
performous/trunk/fix-noisy-sound-output.patch
Modified:
performous/trunk/PKGBUILD
------------------------------+
PKGBUILD | 18 +
fix-noisy-sound-output.patch | 440 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 454 insertions(+), 4 deletions(-)
Modified: PKGBUILD
===================================================================
--- PKGBUILD 2013-05-23 19:16:48 UTC (rev 91560)
+++ PKGBUILD 2013-05-23 19:50:00 UTC (rev 91561)
@@ -4,7 +4,7 @@
pkgname=performous
pkgver=0.7.0
-pkgrel=6
+pkgrel=7
pkgdesc='A free game like "Singstar", "Rockband" or "Stepmania"'
arch=('i686' 'x86_64')
url="http://performous.org/"
@@ -13,15 +13,25 @@
makedepends=('cmake' 'pkgconfig' 'help2man' 'boost' 'mesa')
optdepends=('performous-freesongs: free songs for performous')
source=(http://sourceforge.net/projects/$pkgname/files/$pkgname/$pkgver/performous-$pkgver.tar.bz2
- performous-0.7.0-cmake.patch)
+ performous-0.7.0-cmake.patch
+ fix-noisy-sound-output.patch)
md5sums=('60f3f72b51a630a4aa996484aedb9526'
- '7da8aef3f4dd28e19f95957ae9ac2bb1')
+ '7da8aef3f4dd28e19f95957ae9ac2bb1'
+ '820dc6d1a91c23f0ef56e2cd1759afb6')
-build() {
+prepare() {
cd performous-${pkgver}
+ # patch from gentoo
patch -Np0 -i ../performous-0.7.0-cmake.patch
+ # fix FS#33948 (merged upstream)
+ patch -Np1 -i ../fix-noisy-sound-output.patch
+}
+
+build() {
+ cd performous-${pkgver}
+
mkdir -p build
cd build
Added: fix-noisy-sound-output.patch
===================================================================
--- fix-noisy-sound-output.patch (rev 0)
+++ fix-noisy-sound-output.patch 2013-05-23 19:50:00 UTC (rev 91561)
@@ -0,0 +1,440 @@
+diff -ur performous-0.7.0/game/audio.cc performous-0.7.0b/game/audio.cc
+--- performous-0.7.0/game/audio.cc 2012-11-12 23:14:08.000000000 +0100
++++ performous-0.7.0b/game/audio.cc 2013-05-23 19:38:26.568498744 +0200
+@@ -140,7 +140,8 @@
+ FFmpeg mpeg;
+ float fadeLevel;
+ float pitchFactor;
+- Track(std::string const& filename, unsigned int sr): mpeg(false, true, filename, sr), fadeLevel(1.0f), pitchFactor(0.0f) {}
++ //Track(std::string const& filename, unsigned int sr): mpeg(false, true, filename, sr), fadeLevel(1.0f), pitchFactor(0.0f) {}
++ Track(std::string const& filename, unsigned int sr): mpeg(filename, sr), fadeLevel(1.0f), pitchFactor(0.0f) {}
+ };
+ typedef boost::ptr_map<std::string, Track> Tracks;
+ Tracks tracks; ///< Audio decoders
+@@ -241,7 +242,8 @@
+ FFmpeg mpeg;
+ bool eof;
+ public:
+- Sample(std::string const& filename, unsigned sr) : srate(sr), m_pos(), mpeg(false, true, filename, sr), eof(true) { }
++ //Sample(std::string const& filename, unsigned sr) : srate(sr), m_pos(), mpeg(false, true, filename, sr), eof(true) { }
++ Sample(std::string const& filename, unsigned sr) : m_pos(), mpeg(filename, sr), eof(true) { }
+ void operator()(float* begin, float* end) {
+ if(eof) {
+ // No more data to play in this sample
+diff -ur performous-0.7.0/game/ffmpeg.cc performous-0.7.0b/game/ffmpeg.cc
+--- performous-0.7.0/game/ffmpeg.cc 2012-11-12 23:14:08.000000000 +0100
++++ performous-0.7.0b/game/ffmpeg.cc 2013-05-23 21:41:09.057986491 +0200
+@@ -3,6 +3,7 @@
+ #include "config.hh"
+ #include "util.hh"
+ #include "xtime.hh"
++#include <boost/smart_ptr/shared_ptr.hpp>
+ #include <iostream>
+ #include <stdexcept>
+
+@@ -20,15 +21,20 @@
+
+ /*static*/ boost::mutex FFmpeg::s_avcodec_mutex;
+
+-FFmpeg::FFmpeg(bool decodeVideo, bool decodeAudio, std::string const& _filename, unsigned int rate):
+- width(), height(), m_filename(_filename), m_rate(rate), m_quit(), m_running(), m_eof(),
+- m_seekTarget(getNaN()), m_position(), m_streamId(-1), m_mediaType(),
+- m_formatContext(), m_codecContext(), m_codec(), m_resampleContext(), m_swsContext(),
++//FFmpeg::FFmpeg(bool decodeVideo, bool decodeAudio, std::string const& _filename, unsigned int rate):
++// width(), height(), m_filename(_filename), m_rate(rate), m_quit(), m_running(), m_eof(),
++// m_seekTarget(getNaN()), m_position(), m_streamId(-1), m_mediaType(),
++// m_formatContext(), m_codecContext(), m_codec(), m_resampleContext(), m_swsContext(),
++FFmpeg::FFmpeg(std::string const& _filename, unsigned int rate):
++ width(), height(), m_filename(_filename), m_rate(rate), m_quit(),
++ m_seekTarget(getNaN()), m_position(), m_duration(), m_streamId(-1),
++ m_mediaType(rate ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO),
++ m_formatContext(), m_codecContext(), m_resampleContext(), m_swsContext(),
+ m_thread(new boost::thread(boost::ref(*this)))
+ {
+- if (decodeVideo) m_mediaType = AVMEDIA_TYPE_VIDEO;
+- else if (decodeAudio) m_mediaType = AVMEDIA_TYPE_AUDIO;
+- else throw std::logic_error("Can only decode one track");
++// if (decodeVideo) m_mediaType = AVMEDIA_TYPE_VIDEO;
++// else if (decodeAudio) m_mediaType = AVMEDIA_TYPE_AUDIO;
++// else throw std::logic_error("Can only decode one track");
+ }
+
+ FFmpeg::~FFmpeg() {
+@@ -36,20 +42,20 @@
+ videoQueue.reset();
+ audioQueue.quit();
+ m_thread->join();
+- // TODO: use RAII for freeing resources (to prevent memory leaks)
+- boost::mutex::scoped_lock l(s_avcodec_mutex); // avcodec_close is not thread-safe
+- if (m_resampleContext) audio_resample_close(m_resampleContext);
+- if (m_codecContext) avcodec_close(m_codecContext);
+-#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
+- if (m_formatContext) avformat_close_input(&m_formatContext);
+-#else
+- if (m_formatContext) av_close_input_file(m_formatContext);
+-#endif
+-}
+-
+-double FFmpeg::duration() const {
+- double d = m_running ? m_formatContext->duration / double(AV_TIME_BASE) : getNaN();
+- return d >= 0.0 ? d : getInf();
++// // TODO: use RAII for freeing resources (to prevent memory leaks)
++// boost::mutex::scoped_lock l(s_avcodec_mutex); // avcodec_close is not thread-safe
++// if (m_resampleContext) audio_resample_close(m_resampleContext);
++// if (m_codecContext) avcodec_close(m_codecContext);
++// #if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
++// if (m_formatContext) avformat_close_input(&m_formatContext);
++// #else
++// if (m_formatContext) av_close_input_file(m_formatContext);
++// #endif
++// }
++//
++// double FFmpeg::duration() const {
++// double d = m_running ? m_formatContext->duration / double(AV_TIME_BASE) : getNaN();
++// return d >= 0.0 ? d : getInf();
+ }
+
+ void FFmpeg::open() {
+@@ -60,11 +66,14 @@
+ if (avformat_find_stream_info(m_formatContext, NULL) < 0) throw std::runtime_error("Cannot find stream information");
+ m_formatContext->flags |= AVFMT_FLAG_GENPTS;
+ // Find a track and open the codec
+- m_streamId = av_find_best_stream(m_formatContext, (AVMediaType)m_mediaType, -1, -1, &m_codec, 0);
++// m_streamId = av_find_best_stream(m_formatContext, (AVMediaType)m_mediaType, -1, -1, &m_codec, 0);
++ AVCodec* codec = NULL;
++ m_streamId = av_find_best_stream(m_formatContext, (AVMediaType)m_mediaType, -1, -1, &codec, 0);
+ if (m_streamId < 0) throw std::runtime_error("No suitable track found");
+
+ AVCodecContext* cc = m_formatContext->streams[m_streamId]->codec;
+- if (avcodec_open2(cc, m_codec, NULL) < 0) throw std::runtime_error("Cannot open audio codec");
++// if (avcodec_open2(cc, m_codec, NULL) < 0) throw std::runtime_error("Cannot open audio codec");
++ if (avcodec_open2(cc, codec, NULL) < 0) throw std::runtime_error("Cannot open codec");
+ cc->workaround_bugs = FF_BUG_AUTODETECT;
+ m_codecContext = cc;
+
+@@ -90,18 +99,20 @@
+
+ void FFmpeg::operator()() {
+ try { open(); } catch (std::exception const& e) { std::clog << "ffmpeg/error: Failed to open " << m_filename << ": " << e.what() << std::endl; m_quit = true; return; }
+- m_running = true;
+- audioQueue.setDuration(duration());
++// m_running = true;
++// audioQueue.setDuration(duration());
++ m_duration = m_formatContext->duration / double(AV_TIME_BASE);
++ audioQueue.setDuration(m_duration);
+ int errors = 0;
+ while (!m_quit) {
+ try {
+ if (audioQueue.wantSeek()) m_seekTarget = 0.0;
+ if (m_seekTarget == m_seekTarget) seek_internal();
+ decodePacket();
+- m_eof = false;
++// m_eof = false;
+ errors = 0;
+ } catch (eof_error&) {
+- m_eof = true;
++// m_eof = true;
+ videoQueue.push(new VideoFrame()); // EOF marker
+ boost::thread::sleep(now() + 0.1);
+ } catch (std::exception& e) {
+@@ -109,10 +120,19 @@
+ if (++errors > 2) { std::clog << "ffmpeg/error: FFMPEG terminating due to multiple errors" << std::endl; m_quit = true; }
+ }
+ }
+- m_running = false;
+- m_eof = true;
++// m_running = false;
++// m_eof = true;
+ audioQueue.setEof();
+ videoQueue.push(new VideoFrame()); // EOF marker
++ // TODO: use RAII for freeing resources (to prevent memory leaks)
++ boost::mutex::scoped_lock l(s_avcodec_mutex); // avcodec_close is not thread-safe
++ if (m_resampleContext) audio_resample_close(m_resampleContext);
++ if (m_codecContext) avcodec_close(m_codecContext);
++#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
++ if (m_formatContext) avformat_close_input(&m_formatContext);
++#else
++ if (m_formatContext) av_close_input_file(m_formatContext);
++#endif
+ }
+
+ void FFmpeg::seek(double time, bool wait) {
+@@ -125,7 +145,8 @@
+ videoQueue.reset();
+ audioQueue.reset();
+ int flags = 0;
+- if (m_seekTarget < position()) flags |= AVSEEK_FLAG_BACKWARD;
++// if (m_seekTarget < position()) flags |= AVSEEK_FLAG_BACKWARD;
++ if (m_seekTarget < m_position) flags |= AVSEEK_FLAG_BACKWARD;
+ av_seek_frame(m_formatContext, -1, m_seekTarget * AV_TIME_BASE, flags);
+ m_seekTarget = getNaN(); // Signal that seeking is done
+ }
+@@ -139,16 +160,16 @@
+ ~ReadFramePacket() { av_free_packet(this); }
+ };
+
+- struct AVFrameWrapper {
+- AVFrame* m_frame;
+- AVFrameWrapper(): m_frame(avcodec_alloc_frame()) {
+- if (!m_frame) throw std::runtime_error("Unable to allocate AVFrame");
+- }
+- ~AVFrameWrapper() { av_free(m_frame); }
+- operator AVFrame*() { return m_frame; }
+- AVFrame* operator->() { return m_frame; }
+- };
+-
++// struct AVFrameWrapper {
++// AVFrame* m_frame;
++// AVFrameWrapper(): m_frame(avcodec_alloc_frame()) {
++// if (!m_frame) throw std::runtime_error("Unable to allocate AVFrame");
++// }
++// ~AVFrameWrapper() { av_free(m_frame); }
++// operator AVFrame*() { return m_frame; }
++// AVFrame* operator->() { return m_frame; }
++// };
++//
+ // Read an AVPacket and decode it into AVFrames
+ ReadFramePacket packet(m_formatContext);
+ int packetSize = packet.size;
+@@ -156,19 +177,27 @@
+ if (packetSize < 0) throw std::logic_error("negative packet size?!");
+ if (m_quit || m_seekTarget == m_seekTarget) return;
+ if (packet.stream_index != m_streamId) return;
+- AVFrameWrapper frame;
++// AVFrameWrapper frame;
++ boost::shared_ptr<AVFrame> frame(avcodec_alloc_frame(), &av_free);
+ int frameFinished = 0;
+ int decodeSize = (m_mediaType == AVMEDIA_TYPE_VIDEO ?
+- avcodec_decode_video2(m_codecContext, frame, &frameFinished, &packet) :
+- avcodec_decode_audio4(m_codecContext, frame, &frameFinished, &packet));
+- if (decodeSize < 0) throw std::runtime_error("cannot decode avframe");
++// avcodec_decode_video2(m_codecContext, frame, &frameFinished, &packet) :
++// avcodec_decode_audio4(m_codecContext, frame, &frameFinished, &packet));
++// if (decodeSize < 0) throw std::runtime_error("cannot decode avframe");
++ avcodec_decode_video2(m_codecContext, frame.get(), &frameFinished, &packet) :
++ avcodec_decode_audio4(m_codecContext, frame.get(), &frameFinished, &packet));
++ if (decodeSize < 0) return; // Packet didn't produce any output (could be waiting for B frames or something)
+ packetSize -= decodeSize; // Move forward within the packet
+ if (!frameFinished) continue;
+ // Update current position if timecode is available
+- if (frame->pkt_pts != uint64_t(AV_NOPTS_VALUE)) {
+- m_position = double(frame->pkt_pts) * av_q2d(m_formatContext->streams[m_streamId]->time_base);
+- }
+- if (m_mediaType == AVMEDIA_TYPE_VIDEO) processVideo(frame); else processAudio(frame);
++// if (frame->pkt_pts != uint64_t(AV_NOPTS_VALUE)) {
++ if (int64_t(frame->pkt_pts) != int64_t(AV_NOPTS_VALUE)) {
++// m_position = double(frame->pkt_pts) * av_q2d(m_formatContext->streams[m_streamId]->time_base);
++ m_position = double(frame->pkt_pts) * av_q2d(m_formatContext->streams[m_streamId]->time_base)
++ - double(m_formatContext->start_time) / AV_TIME_BASE;
++ }
++// if (m_mediaType == AVMEDIA_TYPE_VIDEO) processVideo(frame); else processAudio(frame);
++ if (m_mediaType == AVMEDIA_TYPE_VIDEO) processVideo(frame.get()); else processAudio(frame.get());
+ }
+ }
+
+@@ -189,9 +218,29 @@
+ }
+
+ void FFmpeg::processAudio(AVFrame* frame) {
++ void* data = frame->data[0];
++ // New FFmpeg versions use non-interleaved audio decoding and samples may be in float format.
++ // Do a conversion here, allowing us to use the old (deprecated) avcodec audio_resample().
++ std::vector<int16_t> input;
++ unsigned inFrames = frame->nb_samples;
++ if (frame->data[1]) {
++ unsigned channels = m_codecContext->channels;
++ input.reserve(channels * inFrames);
++ for (unsigned i = 0; i < inFrames; ++i) {
++ for (unsigned ch = 0; ch < channels; ++ch) {
++ data = frame->data[ch];
++ input.push_back(m_codecContext->sample_fmt == AV_SAMPLE_FMT_FLTP ?
++ da::conv_to_s16(reinterpret_cast<float*>(data)[i]) :
++ reinterpret_cast<int16_t*>(data)[i]
++ );
++ }
++ }
++ data = &input[0];
++ }
+ // Resample to output sample rate, then push to audio queue and increment timecode
+ std::vector<int16_t> resampled(AVCODEC_MAX_AUDIO_FRAME_SIZE);
+- int frames = audio_resample(m_resampleContext, &resampled[0], (short*)frame->data[0], frame->nb_samples);
++// int frames = audio_resample(m_resampleContext, &resampled[0], (short*)frame->data[0], frame->nb_samples);
++ int frames = audio_resample(m_resampleContext, &resampled[0], reinterpret_cast<short*>(data), inFrames);
+ resampled.resize(frames * AUDIO_CHANNELS);
+ audioQueue.push(resampled, m_position); // May block
+ m_position += double(frames)/m_formatContext->streams[m_streamId]->codec->sample_rate;
+diff -ur performous-0.7.0/game/ffmpeg.hh performous-0.7.0b/game/ffmpeg.hh
+--- performous-0.7.0/game/ffmpeg.hh 2012-11-12 23:14:08.000000000 +0100
++++ performous-0.7.0b/game/ffmpeg.hh 2013-05-23 20:42:22.868566247 +0200
+@@ -3,7 +3,8 @@
+ #include "util.hh"
+ #include "libda/sample.hpp"
+ #include <boost/circular_buffer.hpp>
+-#include <boost/ptr_container/ptr_set.hpp>
++//#include <boost/ptr_container/ptr_set.hpp>
++#include <boost/ptr_container/ptr_deque.hpp>
+ #include <boost/scoped_ptr.hpp>
+ #include <boost/thread/condition.hpp>
+ #include <boost/thread/mutex.hpp>
+@@ -47,25 +48,29 @@
+ }
+ };
+
+-static bool operator<(VideoFrame const& a, VideoFrame const& b) {
+- return a.timestamp < b.timestamp;
+-}
++// static bool operator<(VideoFrame const& a, VideoFrame const& b) {
++// return a.timestamp < b.timestamp;
++// }
+
+ /// video queue: first in first out
+ class VideoFifo {
+ public:
+- VideoFifo(): m_available(), m_timestamp(), m_eof() {}
++// VideoFifo(): m_available(), m_timestamp(), m_eof() {}
++ VideoFifo(): m_timestamp(), m_eof() {}
+ /// trys to pop a VideoFrame from queue
+ bool tryPop(VideoFrame& f) {
+ boost::mutex::scoped_lock l(m_mutex);
+- if (!m_queue.empty() && m_queue.begin()->data.empty()) { m_eof = true; return false; }
+- statsUpdate();
+- if (m_available == 0) return false; // Nothing to deliver
++// if (!m_queue.empty() && m_queue.begin()->data.empty()) { m_eof = true; return false; }
++// statsUpdate();
++// if (m_available == 0) return false; // Nothing to deliver
++ if (m_queue.empty()) return false; // Nothing to deliver
++ if (m_queue.begin()->data.empty()) { m_eof = true; return false; }
+ f.swap(*m_queue.begin());
+- m_queue.erase(m_queue.begin());
++// m_queue.erase(m_queue.begin());
++ m_queue.pop_front();
+ m_cond.notify_all();
+ m_timestamp = f.timestamp;
+- statsUpdate();
++// statsUpdate();
+ return true;
+ }
+ /// pushes VideoFrames to queue
+@@ -73,38 +78,41 @@
+ boost::mutex::scoped_lock l(m_mutex);
+ while (m_queue.size() > m_max) m_cond.wait(l);
+ if (m_queue.empty()) m_timestamp = f->timestamp;
+- m_queue.insert(f);
+- statsUpdate();
+- }
+- /// updates stats
+- void statsUpdate() {
+- m_available = std::max(0, int(m_queue.size()) - int(m_min));
+- if (m_available == 0 && !m_queue.empty() && m_queue.rbegin()->data.empty()) m_available = m_queue.size() - 1;
++// m_queue.insert(f);
++// statsUpdate();
++// }
++// /// updates stats
++// void statsUpdate() {
++// m_available = std::max(0, int(m_queue.size()) - int(m_min));
++// if (m_available == 0 && !m_queue.empty() && m_queue.rbegin()->data.empty()) m_available = m_queue.size() - 1;
++ m_queue.push_back(f);
+ }
+ /// resets video queue
+ void reset() {
+ boost::mutex::scoped_lock l(m_mutex);
+ m_queue.clear();
+ m_cond.notify_all();
+- statsUpdate();
++// statsUpdate();
+ m_eof = false;
+ }
+ /// returns current position
+ double position() const { return m_timestamp; }
+- /// returns m_available / m_max
+- double percentage() const { return double(m_available) / m_max; }
++// /// returns m_available / m_max
++// double percentage() const { return double(m_available) / m_max; }
+ /// simple eof check
+ double eof() const { return m_eof; }
+
+ private:
+- boost::ptr_set<VideoFrame> m_queue;
++// boost::ptr_set<VideoFrame> m_queue;
++ boost::ptr_deque<VideoFrame> m_queue;
+ mutable boost::mutex m_mutex;
+ boost::condition m_cond;
+- volatile unsigned m_available;
++// volatile unsigned m_available;
+ double m_timestamp;
+ bool m_eof;
+- static const unsigned m_min = 16; // H.264 may have 16 consecutive B frames
+- static const unsigned m_max = 50;
++// static const unsigned m_min = 16; // H.264 may have 16 consecutive B frames
++// static const unsigned m_max = 50;
++ static const unsigned m_max = 20;
+ };
+
+ class AudioBuffer {
+@@ -195,7 +203,7 @@
+
+ // ffmpeg forward declarations
+ extern "C" {
+- struct AVCodec;
++// struct AVCodec;
+ struct AVCodecContext;
+ struct AVFormatContext;
+ struct AVFrame;
+@@ -206,8 +214,10 @@
+ /// ffmpeg class
+ class FFmpeg {
+ public:
+- /// constructor
+- FFmpeg(bool decodeVideo, bool decodeAudio, std::string const& file, unsigned int rate = 48000);
++// /// constructor
++// FFmpeg(bool decodeVideo, bool decodeAudio, std::string const& file, unsigned int rate = 48000);
++ /// Decode file; if no rate is specified, decode video, otherwise decode audio.
++ FFmpeg(std::string const& file, unsigned int rate = 0);
+ ~FFmpeg();
+ void operator()(); ///< Thread runs here, don't call directly
+ unsigned width, ///< width of video
+@@ -220,8 +230,8 @@
+ void seek(double time, bool wait = true);
+ /// duration
+ double duration() const;
+- /// return current position
+- double position() { return videoQueue.position(); /* FIXME: remove */ }
++// /// return current position
++// double position() { return videoQueue.position(); /* FIXME: remove */ }
+ bool terminating() const { return m_quit; }
+
+ class eof_error: public std::exception {};
+@@ -234,16 +244,17 @@
+ std::string m_filename;
+ unsigned int m_rate;
+ volatile bool m_quit;
+- volatile bool m_running;
+- volatile bool m_eof;
++// volatile bool m_running;
++// volatile bool m_eof;
+ volatile double m_seekTarget;
+ double m_position;
++ double m_duration;
+ // libav-specific variables
+ int m_streamId;
+ int m_mediaType; // enum AVMediaType
+ AVFormatContext* m_formatContext;
+ AVCodecContext* m_codecContext;
+- AVCodec* m_codec;
++// AVCodec* m_codec;
+ ReSampleContext* m_resampleContext;
+ SwsContext* m_swsContext;
+ // Make sure the thread starts only after initializing everything else
+diff -ur performous-0.7.0/game/video.cc performous-0.7.0b/game/video.cc
+--- performous-0.7.0/game/video.cc 2012-11-12 23:14:08.000000000 +0100
++++ performous-0.7.0b/game/video.cc 2013-05-23 20:33:30.612096870 +0200
+@@ -3,7 +3,8 @@
+ #include "util.hh"
+ #include <cmath>
+
+-Video::Video(std::string const& _videoFile, double videoGap): m_mpeg(true, false, _videoFile), m_videoGap(videoGap), m_surfaceTime(), m_lastTime(), m_alpha(-0.5, 1.5) {}
++// Video::Video(std::string const& _videoFile, double videoGap): m_mpeg(true, false, _videoFile), m_videoGap(videoGap), m_surfaceTime(), m_lastTime(), m_alpha(-0.5, 1.5) {}
++Video::Video(std::string const& _videoFile, double videoGap): m_mpeg(_videoFile), m_videoGap(videoGap), m_surfaceTime(), m_lastTime(), m_alpha(-0.5, 1.5) {}
+
+ void Video::prepare(double time) {
+ time += m_videoGap;
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