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virtualx-engine/scene/gui/video_player.cpp
Rémi Verschelde c7bc44d5ad Welcome in 2017, dear changelog reader! 
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
2017-01-01 22:03:33 +01:00

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/*************************************************************************/
/* video_player.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "video_player.h"
#include "os/os.h"
int VideoPlayer::InternalStream::get_channel_count() const {
return player->sp_get_channel_count();
}
void VideoPlayer::InternalStream::set_mix_rate(int p_rate){
return player->sp_set_mix_rate(p_rate);
}
bool VideoPlayer::InternalStream::mix(int32_t *p_buffer,int p_frames){
return player->sp_mix(p_buffer,p_frames);
}
void VideoPlayer::InternalStream::update(){
player->sp_update();
}
int VideoPlayer::sp_get_channel_count() const {
return playback->get_channels();
}
void VideoPlayer::sp_set_mix_rate(int p_rate){
server_mix_rate=p_rate;
}
bool VideoPlayer::sp_mix(int32_t *p_buffer,int p_frames) {
if (resampler.is_ready()) {
return resampler.mix(p_buffer,p_frames);
}
return false;
}
void VideoPlayer::sp_update() {
#if 0
_THREAD_SAFE_METHOD_
//update is unused
if (!paused && playback.is_valid()) {
if (!playback->is_playing()) {
//stream depleted data, but there's still audio in the ringbuffer
//check that all this audio has been flushed before stopping the stream
int to_mix = resampler.get_total() - resampler.get_todo();
if (to_mix==0) {
stop();
return;
}
return;
}
int todo =resampler.get_todo();
int wrote = playback->mix(resampler.get_write_buffer(),todo);
resampler.write(wrote);
}
#endif
}
int VideoPlayer::_audio_mix_callback(void* p_udata,const int16_t *p_data,int p_frames) {
VideoPlayer *vp=(VideoPlayer*)p_udata;
int todo=MIN(vp->resampler.get_todo(),p_frames);
int16_t *wb = vp->resampler.get_write_buffer();
int c = vp->resampler.get_channel_count();
for(int i=0;i<todo*c;i++) {
wb[i]=p_data[i];
}
vp->resampler.write(todo);
return todo;
}
void VideoPlayer::_notification(int p_notification) {
switch (p_notification) {
case NOTIFICATION_ENTER_TREE: {
if (stream.is_valid() && autoplay && !get_tree()->is_editor_hint()) {
play();
}
} break;
case NOTIFICATION_PROCESS: {
if (stream.is_null())
return;
if (paused)
return;
if (!playback->is_playing())
return;
double audio_time = USEC_TO_SEC(OS::get_singleton()->get_ticks_usec()); //AudioServer::get_singleton()->get_mix_time();
double delta = last_audio_time==0?0:audio_time-last_audio_time;
last_audio_time=audio_time;
if (delta==0)
return;
playback->update(delta);
} break;
case NOTIFICATION_DRAW: {
if (texture.is_null())
return;
if (texture->get_width() == 0)
return;
Size2 s=expand?get_size():texture->get_size();
draw_texture_rect(texture,Rect2(Point2(),s),false);
} break;
};
};
Size2 VideoPlayer::get_minimum_size() const {
if (!expand && !texture.is_null())
return texture->get_size();
else
return Size2();
}
void VideoPlayer::set_expand(bool p_expand) {
expand=p_expand;
update();
minimum_size_changed();
}
bool VideoPlayer::has_expand() const {
return expand;
}
void VideoPlayer::set_stream(const Ref<VideoStream> &p_stream) {
stop();
stream=p_stream;
if (stream.is_valid()) {
stream->set_audio_track(audio_track);
playback=stream->instance_playback();
} else {
playback=Ref<VideoStreamPlayback>();
}
if (!playback.is_null()) {
playback->set_loop(loops);
playback->set_paused(paused);
texture=playback->get_texture();
const int channels = playback->get_channels();
AudioServer::get_singleton()->lock();
if (channels > 0)
resampler.setup(channels,playback->get_mix_rate(),server_mix_rate,buffering_ms,0);
else
resampler.clear();
AudioServer::get_singleton()->unlock();
if (channels > 0)
playback->set_mix_callback(_audio_mix_callback,this);
} else {
texture.unref();
AudioServer::get_singleton()->lock();
resampler.clear();
AudioServer::get_singleton()->unlock();
}
update();
};
Ref<VideoStream> VideoPlayer::get_stream() const {
return stream;
};
void VideoPlayer::play() {
ERR_FAIL_COND(!is_inside_tree());
if (playback.is_null())
return;
playback->stop();
playback->play();
set_process(true);
AudioServer::get_singleton()->stream_set_active(stream_rid,true);
AudioServer::get_singleton()->stream_set_volume_scale(stream_rid,volume);
last_audio_time=0;
};
void VideoPlayer::stop() {
if (!is_inside_tree())
return;
if (playback.is_null())
return;
playback->stop();
AudioServer::get_singleton()->stream_set_active(stream_rid,false);
resampler.flush();
set_process(false);
last_audio_time=0;
};
bool VideoPlayer::is_playing() const {
if (playback.is_null())
return false;
return playback->is_playing();
};
void VideoPlayer::set_paused(bool p_paused) {
paused=p_paused;
if (playback.is_valid()) {
playback->set_paused(p_paused);
set_process(!p_paused);
};
last_audio_time = 0;
};
bool VideoPlayer::is_paused() const {
return paused;
}
void VideoPlayer::set_buffering_msec(int p_msec) {
buffering_ms=p_msec;
}
int VideoPlayer::get_buffering_msec() const{
return buffering_ms;
}
void VideoPlayer::set_audio_track(int p_track) {
audio_track=p_track;
}
int VideoPlayer::get_audio_track() const {
return audio_track;
}
void VideoPlayer::set_volume(float p_vol) {
volume=p_vol;
};
float VideoPlayer::get_volume() const {
return volume;
};
void VideoPlayer::set_volume_db(float p_db) {
if (p_db<-79)
set_volume(0);
else
set_volume(Math::db2linear(p_db));
};
float VideoPlayer::get_volume_db() const {
if (volume==0)
return -80;
else
return Math::linear2db(volume);
};
String VideoPlayer::get_stream_name() const {
if (stream.is_null())
return "<No Stream>";
return stream->get_name();
};
float VideoPlayer::get_stream_pos() const {
if (playback.is_null())
return 0;
return playback->get_pos();
};
Ref<Texture> VideoPlayer::get_video_texture() {
if (playback.is_valid())
return playback->get_texture();
return Ref<Texture> ();
}
void VideoPlayer::set_autoplay(bool p_enable) {
autoplay=p_enable;
};
bool VideoPlayer::has_autoplay() const {
return autoplay;
};
void VideoPlayer::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_stream","stream:VideoStream"),&VideoPlayer::set_stream);
ObjectTypeDB::bind_method(_MD("get_stream:VideoStream"),&VideoPlayer::get_stream);
ObjectTypeDB::bind_method(_MD("play"),&VideoPlayer::play);
ObjectTypeDB::bind_method(_MD("stop"),&VideoPlayer::stop);
ObjectTypeDB::bind_method(_MD("is_playing"),&VideoPlayer::is_playing);
ObjectTypeDB::bind_method(_MD("set_paused","paused"),&VideoPlayer::set_paused);
ObjectTypeDB::bind_method(_MD("is_paused"),&VideoPlayer::is_paused);
ObjectTypeDB::bind_method(_MD("set_volume","volume"),&VideoPlayer::set_volume);
ObjectTypeDB::bind_method(_MD("get_volume"),&VideoPlayer::get_volume);
ObjectTypeDB::bind_method(_MD("set_volume_db","db"),&VideoPlayer::set_volume_db);
ObjectTypeDB::bind_method(_MD("get_volume_db"),&VideoPlayer::get_volume_db);
ObjectTypeDB::bind_method(_MD("set_audio_track","track"),&VideoPlayer::set_audio_track);
ObjectTypeDB::bind_method(_MD("get_audio_track"),&VideoPlayer::get_audio_track);
ObjectTypeDB::bind_method(_MD("get_stream_name"),&VideoPlayer::get_stream_name);
ObjectTypeDB::bind_method(_MD("get_stream_pos"),&VideoPlayer::get_stream_pos);
ObjectTypeDB::bind_method(_MD("set_autoplay","enabled"),&VideoPlayer::set_autoplay);
ObjectTypeDB::bind_method(_MD("has_autoplay"),&VideoPlayer::has_autoplay);
ObjectTypeDB::bind_method(_MD("set_expand","enable"), &VideoPlayer::set_expand );
ObjectTypeDB::bind_method(_MD("has_expand"), &VideoPlayer::has_expand );
ObjectTypeDB::bind_method(_MD("set_buffering_msec","msec"),&VideoPlayer::set_buffering_msec);
ObjectTypeDB::bind_method(_MD("get_buffering_msec"),&VideoPlayer::get_buffering_msec);
ObjectTypeDB::bind_method(_MD("get_video_texture:Texture"), &VideoPlayer::get_video_texture );
ADD_PROPERTY( PropertyInfo(Variant::INT, "stream/audio_track",PROPERTY_HINT_RANGE,"0,128,1"), _SCS("set_audio_track"), _SCS("get_audio_track") );
ADD_PROPERTY( PropertyInfo(Variant::OBJECT, "stream/stream", PROPERTY_HINT_RESOURCE_TYPE,"VideoStream"), _SCS("set_stream"), _SCS("get_stream") );
// ADD_PROPERTY( PropertyInfo(Variant::BOOL, "stream/loop"), _SCS("set_loop"), _SCS("has_loop") );
ADD_PROPERTY( PropertyInfo(Variant::REAL, "stream/volume_db", PROPERTY_HINT_RANGE,"-80,24,0.01"), _SCS("set_volume_db"), _SCS("get_volume_db") );
ADD_PROPERTY( PropertyInfo(Variant::BOOL, "stream/autoplay"), _SCS("set_autoplay"), _SCS("has_autoplay") );
ADD_PROPERTY( PropertyInfo(Variant::BOOL, "stream/paused"), _SCS("set_paused"), _SCS("is_paused") );
ADD_PROPERTY( PropertyInfo( Variant::BOOL, "expand" ), _SCS("set_expand"),_SCS("has_expand") );
}
VideoPlayer::VideoPlayer() {
volume=1;
loops = false;
paused = false;
autoplay = false;
expand = true;
loops = false;
audio_track=0;
buffering_ms=500;
server_mix_rate=44100;
internal_stream.player=this;
stream_rid=AudioServer::get_singleton()->audio_stream_create(&internal_stream);
last_audio_time=0;
};
VideoPlayer::~VideoPlayer() {
if (stream_rid.is_valid())
AudioServer::get_singleton()->free(stream_rid);
resampler.clear(); //Not necessary here, but make in consistent with other "stream_player" classes
};
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