godot/platform/iphone/native_video_view.m

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/*************************************************************************/
/* native_video_view.m */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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. */
/*************************************************************************/
#import "native_video_view.h"
#import <AVFoundation/AVFoundation.h>
@interface GodotNativeVideoView ()
@property(strong, nonatomic) AVAsset *avAsset;
@property(strong, nonatomic) AVPlayerItem *avPlayerItem;
@property(strong, nonatomic) AVPlayer *avPlayer;
@property(strong, nonatomic) AVPlayerLayer *avPlayerLayer;
@property(assign, nonatomic) CMTime videoCurrentTime;
@property(assign, nonatomic) BOOL isVideoCurrentlyPlaying;
@end
@implementation GodotNativeVideoView
- (instancetype)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
[self godot_commonInit];
}
return self;
}
- (instancetype)initWithCoder:(NSCoder *)coder {
self = [super initWithCoder:coder];
if (self) {
[self godot_commonInit];
}
return self;
}
- (void)godot_commonInit {
self.isVideoCurrentlyPlaying = NO;
self.videoCurrentTime = kCMTimeZero;
[self observeVideoAudio];
}
- (void)layoutSubviews {
[super layoutSubviews];
self.avPlayerLayer.frame = self.bounds;
}
- (void)observeVideoAudio {
printf("******** adding observer for sound routing changes\n");
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(audioRouteChangeListenerCallback:)
name:AVAudioSessionRouteChangeNotification
object:nil];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if (object == self.avPlayerItem && [keyPath isEqualToString:@"status"]) {
[self handleVideoOrPlayerStatus];
}
if (object == self.avPlayer && [keyPath isEqualToString:@"rate"]) {
[self handleVideoPlayRate];
}
}
// MARK: Video Audio
- (void)audioRouteChangeListenerCallback:(NSNotification *)notification {
printf("*********** route changed!\n");
NSDictionary *interuptionDict = notification.userInfo;
NSInteger routeChangeReason = [[interuptionDict valueForKey:AVAudioSessionRouteChangeReasonKey] integerValue];
switch (routeChangeReason) {
case AVAudioSessionRouteChangeReasonNewDeviceAvailable: {
NSLog(@"AVAudioSessionRouteChangeReasonNewDeviceAvailable");
NSLog(@"Headphone/Line plugged in");
} break;
case AVAudioSessionRouteChangeReasonOldDeviceUnavailable: {
NSLog(@"AVAudioSessionRouteChangeReasonOldDeviceUnavailable");
NSLog(@"Headphone/Line was pulled. Resuming video play....");
if ([self isVideoPlaying]) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.5f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
[self.avPlayer play]; // NOTE: change this line according your current player implementation
NSLog(@"resumed play");
});
}
} break;
case AVAudioSessionRouteChangeReasonCategoryChange: {
// called at start - also when other audio wants to play
NSLog(@"AVAudioSessionRouteChangeReasonCategoryChange");
} break;
}
}
// MARK: Native Video Player
- (void)handleVideoOrPlayerStatus {
if (self.avPlayerItem.status == AVPlayerItemStatusFailed || self.avPlayer.status == AVPlayerStatusFailed) {
[self stopVideo];
}
if (self.avPlayer.status == AVPlayerStatusReadyToPlay && self.avPlayerItem.status == AVPlayerItemStatusReadyToPlay && CMTimeCompare(self.videoCurrentTime, kCMTimeZero) == 0) {
// NSLog(@"time: %@", self.video_current_time);
[self.avPlayer seekToTime:self.videoCurrentTime];
self.videoCurrentTime = kCMTimeZero;
}
}
- (void)handleVideoPlayRate {
NSLog(@"Player playback rate changed: %.5f", self.avPlayer.rate);
if ([self isVideoPlaying] && self.avPlayer.rate == 0.0 && !self.avPlayer.error) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.5f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
[self.avPlayer play]; // NOTE: change this line according your current player implementation
NSLog(@"resumed play");
});
NSLog(@" . . . PAUSED (or just started)");
}
}
- (BOOL)playVideoAtPath:(NSString *)filePath volume:(float)videoVolume audio:(NSString *)audioTrack subtitle:(NSString *)subtitleTrack {
self.avAsset = [AVAsset assetWithURL:[NSURL fileURLWithPath:filePath]];
self.avPlayerItem = [AVPlayerItem playerItemWithAsset:self.avAsset];
[self.avPlayerItem addObserver:self forKeyPath:@"status" options:0 context:nil];
self.avPlayer = [AVPlayer playerWithPlayerItem:self.avPlayerItem];
self.avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:self.avPlayer];
[self.avPlayer addObserver:self forKeyPath:@"status" options:0 context:nil];
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(playerItemDidReachEnd:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:[self.avPlayer currentItem]];
[self.avPlayer addObserver:self forKeyPath:@"rate" options:NSKeyValueObservingOptionNew context:0];
[self.avPlayerLayer setFrame:self.bounds];
[self.layer addSublayer:self.avPlayerLayer];
[self.avPlayer play];
AVMediaSelectionGroup *audioGroup = [self.avAsset mediaSelectionGroupForMediaCharacteristic:AVMediaCharacteristicAudible];
NSMutableArray *allAudioParams = [NSMutableArray array];
for (id track in audioGroup.options) {
NSString *language = [[track locale] localeIdentifier];
NSLog(@"subtitle lang: %@", language);
if ([language isEqualToString:audioTrack]) {
AVMutableAudioMixInputParameters *audioInputParams = [AVMutableAudioMixInputParameters audioMixInputParameters];
[audioInputParams setVolume:videoVolume atTime:kCMTimeZero];
[audioInputParams setTrackID:[track trackID]];
[allAudioParams addObject:audioInputParams];
AVMutableAudioMix *audioMix = [AVMutableAudioMix audioMix];
[audioMix setInputParameters:allAudioParams];
[self.avPlayer.currentItem selectMediaOption:track inMediaSelectionGroup:audioGroup];
[self.avPlayer.currentItem setAudioMix:audioMix];
break;
}
}
AVMediaSelectionGroup *subtitlesGroup = [self.avAsset mediaSelectionGroupForMediaCharacteristic:AVMediaCharacteristicLegible];
NSArray *useableTracks = [AVMediaSelectionGroup mediaSelectionOptionsFromArray:subtitlesGroup.options withoutMediaCharacteristics:[NSArray arrayWithObject:AVMediaCharacteristicContainsOnlyForcedSubtitles]];
for (id track in useableTracks) {
NSString *language = [[track locale] localeIdentifier];
NSLog(@"subtitle lang: %@", language);
if ([language isEqualToString:subtitleTrack]) {
[self.avPlayer.currentItem selectMediaOption:track inMediaSelectionGroup:subtitlesGroup];
break;
}
}
self.isVideoCurrentlyPlaying = YES;
return true;
}
- (BOOL)isVideoPlaying {
if (self.avPlayer.error) {
printf("Error during playback\n");
}
return (self.avPlayer.rate > 0 && !self.avPlayer.error);
}
- (void)pauseVideo {
self.videoCurrentTime = self.avPlayer.currentTime;
[self.avPlayer pause];
self.isVideoCurrentlyPlaying = NO;
}
- (void)unfocusVideo {
[self.avPlayer pause];
}
- (void)unpauseVideo {
[self.avPlayer play];
self.isVideoCurrentlyPlaying = YES;
}
- (void)playerItemDidReachEnd:(NSNotification *)notification {
[self stopVideo];
}
- (void)finishPlayingVideo {
[self.avPlayer pause];
[self.avPlayerLayer removeFromSuperlayer];
self.avPlayerLayer = nil;
if (self.avPlayerItem) {
[self.avPlayerItem removeObserver:self forKeyPath:@"status"];
self.avPlayerItem = nil;
}
if (self.avPlayer) {
[self.avPlayer removeObserver:self forKeyPath:@"status"];
self.avPlayer = nil;
}
self.avAsset = nil;
self.isVideoCurrentlyPlaying = NO;
}
- (void)stopVideo {
[self finishPlayingVideo];
[self removeFromSuperview];
}
@end