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Fixed seek behavior: sync if necessary in update.

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brunoherbelin
2020-08-12 22:49:48 +02:00
parent 3c5c6ef8ed
commit bb1682768a
2 changed files with 55 additions and 56 deletions
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100
MediaPlayer.cpp
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@@ -19,6 +19,8 @@ using namespace std;
#define MEDIA_PLAYER_DEBUG
#endif
#define USE_GST_APPSINK_CALLBACKS
std::list<MediaPlayer*> MediaPlayer::registered_;
MediaPlayer::MediaPlayer(string name) : id_(name)
@@ -33,11 +35,13 @@ MediaPlayer::MediaPlayer(string name) : id_(name)
ready_ = false;
failed_ = false;
seekable_ = false;
seeking_ = false;
isimage_ = false;
interlaced_ = false;
enabled_ = true;
rate_ = 1.0;
framerate_ = 0.0;
bitrate_ = 0;
width_ = par_width_ = 640;
height_ = 480;
@@ -100,17 +104,21 @@ void MediaPlayer::open(string path)
g_signal_connect (discoverer_, "discovered", G_CALLBACK (callback_discoverer_process), this);
// set callback when finished discovering
g_signal_connect (discoverer_, "finished", G_CALLBACK (callback_discoverer_finished), this);
// start discoverer
gst_discoverer_start(discoverer_);
// Add the request to process asynchronously the URI
if (!gst_discoverer_discover_uri_async (discoverer_, uri_.c_str())) {
Log::Warning("MediaPlayer %s Failed to start discovering URI '%s'\n", id_.c_str(), uri_.c_str());
Log::Warning("MediaPlayer %s Failed to open file '%s'\n", id_.c_str(), uri_.c_str());
g_object_unref (discoverer_);
discoverer_ = nullptr;
failed_ = true;
}
#ifdef MEDIA_PLAYER_DEBUG
Log::Info("MediaPlayer %s checking '%s'", id_.c_str(), uri_.c_str());
#endif
// and wait for discoverer to finish...
}
@@ -163,30 +171,30 @@ void MediaPlayer::execute_open()
gst_app_sink_set_caps (GST_APP_SINK(sink), caps);
// Instruct appsink to drop old buffers when the maximum amount of queued buffers is reached.
gst_app_sink_set_max_buffers( GST_APP_SINK(sink), 100);
gst_app_sink_set_max_buffers( GST_APP_SINK(sink), 50);
gst_app_sink_set_drop (GST_APP_SINK(sink), true);
// // set the callbacks
// GstAppSinkCallbacks callbacks;
// callbacks.new_preroll = callback_new_preroll;
// if (isimage_) {
// callbacks.eos = NULL;
// callbacks.new_sample = NULL;
// }
// else {
// callbacks.eos = callback_end_of_stream;
// callbacks.new_sample = callback_new_sample;
// }
// gst_app_sink_set_callbacks (GST_APP_SINK(sink), &callbacks, this, NULL);
// gst_app_sink_set_emit_signals (GST_APP_SINK(sink), false);
// connect callbacks
#ifdef USE_GST_APPSINK_CALLBACKS
// set the callbacks
GstAppSinkCallbacks callbacks;
callbacks.new_preroll = callback_new_preroll;
if (isimage_) {
callbacks.eos = NULL;
callbacks.new_sample = NULL;
}
else {
callbacks.eos = callback_end_of_stream;
callbacks.new_sample = callback_new_sample;
}
gst_app_sink_set_callbacks (GST_APP_SINK(sink), &callbacks, this, NULL);
gst_app_sink_set_emit_signals (GST_APP_SINK(sink), false);
#else
// connect signals callbacks
g_signal_connect(G_OBJECT(sink), "new-sample", G_CALLBACK (callback_new_sample), this);
g_signal_connect(G_OBJECT(sink), "new-preroll", G_CALLBACK (callback_new_preroll), this);
g_signal_connect(G_OBJECT(sink), "eos", G_CALLBACK (callback_end_of_stream), this);
gst_app_sink_set_emit_signals (GST_APP_SINK(sink), true);
#endif
// done with ref to sink
gst_object_unref (sink);
}
@@ -203,7 +211,7 @@ void MediaPlayer::execute_open()
// set to desired state (PLAY or PAUSE)
GstStateChangeReturn ret = gst_element_set_state (pipeline_, desired_state_);
if (ret == GST_STATE_CHANGE_FAILURE) {
Log::Warning("MediaPlayer %s Could not open %s", id_.c_str(), uri_.c_str());
Log::Warning("MediaPlayer %s Could not open '%s'", id_.c_str(), uri_.c_str());
failed_ = true;
return;
}
@@ -216,10 +224,9 @@ void MediaPlayer::execute_open()
}
// all good
Log::Info("MediaPlayer %s Open %s (%s %d x %d)", id_.c_str(), uri_.c_str(), codec_name_.c_str(), width_, height_);
Log::Info("MediaPlayer %s Opened '%s' (%s %d x %d)", id_.c_str(), uri_.c_str(), codec_name_.c_str(), width_, height_);
ready_ = true;
// register media player
MediaPlayer::registered_.push_back(this);
}
@@ -324,8 +331,10 @@ void MediaPlayer::enable(bool on)
enabled_ = on;
// default to pause
GstState requested_state = GST_STATE_PAUSED;
// unpause only if enabled
if (enabled_) {
requested_state = desired_state_;
}
@@ -353,7 +362,7 @@ bool MediaPlayer::isImage() const
void MediaPlayer::play(bool on)
{
// cannot play an image
// ignore if disabled, and cannot play an image
if (!enabled_ || isimage_)
return;
@@ -443,7 +452,7 @@ void MediaPlayer::step()
if (!enabled_ || isPlaying())
return;
if ( position_ == ( rate_ < 0.0 ? timeline.start() : timeline.end() ) )
if ( ( rate_ < 0.0 && position_ <= timeline.start() ) || ( rate_ > 0.0 && position_ >= timeline.end() ) )
rewind();
// step
@@ -651,11 +660,18 @@ void MediaPlayer::update()
if (isimage_)
return;
if (seeking_) {
GstState state;
gst_element_get_state (pipeline_, &state, NULL, GST_CLOCK_TIME_NONE);
seeking_ = false;
}
// manage loop mode
if (need_loop) {
execute_loop_command();
}
// manage timeline
// TimeInterval gap;
// if (position_ != GST_CLOCK_TIME_NONE && timeline.gapAt(position_, gap)) {
@@ -706,24 +722,6 @@ void MediaPlayer::execute_seek_command(GstClockTime target)
if ( ABS(rate_) > 1.0 )
seek_flags |= GST_SEEK_FLAG_TRICKMODE;
// bool ret = false;
// if (rate_ > 0) {
// ret = gst_element_seek (pipeline_, rate_, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
// GST_SEEK_TYPE_SET, seek_pos,
// GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE);
// }
// else {
// ret = gst_element_seek (pipeline_, rate_, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
// GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE,
// GST_SEEK_TYPE_SET, seek_pos);
// }
// if (!ret)
// Log::Warning("MediaPlayer %s Seek failed", gst_element_get_name(pipeline_));
// create seek event depending on direction
GstEvent *seek_event = nullptr;
if (rate_ > 0) {
@@ -739,6 +737,7 @@ void MediaPlayer::execute_seek_command(GstClockTime target)
if (seek_event && !gst_element_send_event(pipeline_, seek_event) )
Log::Warning("MediaPlayer %s Seek failed", id_.c_str());
else {
seeking_ = true;
#ifdef MEDIA_PLAYER_DEBUG
Log::Info("MediaPlayer %s Seek %ld %f", id_.c_str(), seek_pos, rate_);
#endif
@@ -832,8 +831,10 @@ bool MediaPlayer::fill_frame(GstBuffer *buf, FrameStatus status)
frame_[write_index_].position = buf->pts;
// set the start position (i.e. pts of first frame we got)
if (timeline.start() == GST_CLOCK_TIME_NONE)
if (timeline.start() == GST_CLOCK_TIME_NONE) {
timeline.setStart(buf->pts);
Log::Info("Timeline %ld [%ld %ld]", timeline.numFrames(), timeline.start(), timeline.end());
}
}
// full but invalid frame : will be deleted next iteration
// (should never happen)
@@ -954,7 +955,7 @@ void MediaPlayer::callback_discoverer_process (GstDiscoverer *discoverer, GstDis
m->discoverer_message_ << "Invalid URI: " << uri;
break;
case GST_DISCOVERER_ERROR:
m->discoverer_message_ << "Error: " << err->message;
m->discoverer_message_ << "Warning: " << err->message;
break;
case GST_DISCOVERER_TIMEOUT:
m->discoverer_message_ << "Time out";
@@ -966,10 +967,11 @@ void MediaPlayer::callback_discoverer_process (GstDiscoverer *discoverer, GstDis
{
const GstStructure *s = gst_discoverer_info_get_misc (info);
gchar *str = gst_structure_to_string (s);
m->discoverer_message_ << "Unknown file format / " << str;
m->discoverer_message_ << "Warning: Unknown file format / " << str;
g_free (str);
}
break;
default:
case GST_DISCOVERER_OK:
break;
}
@@ -988,12 +990,12 @@ void MediaPlayer::callback_discoverer_process (GstDiscoverer *discoverer, GstDis
GstDiscovererVideoInfo* vinfo = GST_DISCOVERER_VIDEO_INFO(tmpinf);
m->width_ = gst_discoverer_video_info_get_width(vinfo);
m->height_ = gst_discoverer_video_info_get_height(vinfo);
m->isimage_ = gst_discoverer_video_info_is_image(vinfo);
m->interlaced_ = gst_discoverer_video_info_is_interlaced(vinfo);
m->bitrate_ = gst_discoverer_video_info_get_bitrate(vinfo);
guint parn = gst_discoverer_video_info_get_par_num(vinfo);
guint pard = gst_discoverer_video_info_get_par_denom(vinfo);
m->par_width_ = (m->width_ * parn) / pard;
m->isimage_ = gst_discoverer_video_info_is_image(vinfo);
// if its a video, it duration, framerate, etc.
if ( !m->isimage_ ) {
m->timeline.setEnd( gst_discoverer_info_get_duration (info) );
@@ -1028,7 +1030,7 @@ void MediaPlayer::callback_discoverer_process (GstDiscoverer *discoverer, GstDis
gst_discoverer_stream_info_list_free(streams);
if (!foundvideostream) {
m->discoverer_message_ << "No video stream.";
m->discoverer_message_ << "Warning: No video stream.";
}
}
@@ -1042,7 +1044,7 @@ void MediaPlayer::callback_discoverer_finished(GstDiscoverer *discoverer, MediaP
if ( m->discoverer_message_.str().empty())
m->execute_open();
else {
Log::Warning("MediaPlayer %s Failed to open %s\n%s", m->id_.c_str(), m->uri_.c_str(), m->discoverer_message_.str().c_str());
Log::Warning("MediaPlayer %s Failed to open '%s'\n%s", m->id_.c_str(), m->uri_.c_str(), m->discoverer_message_.str().c_str());
m->discoverer_message_.clear();
m->failed_ = true;
}