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HBAudio.m
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HBAudio.m
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/* HBAudio.m $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License. */
#import "HBAudio.h"
#import "HBTitle.h"
#import "HBAudioTrack.h"
#import "HBAudioTrackPreset.h"
#import "HBAudioDefaults.h"
#import "HBCodingUtilities.h"
#include "hb.h"
NSString *HBAudioChangedNotification = @"HBAudioChangedNotification";
@interface HBAudio () <HBAudioTrackDataSource, HBAudioTrackDelegate>
@property (nonatomic, readonly, strong) NSDictionary *noneTrack;
@property (nonatomic, readonly, strong) NSArray *masterTrackArray; // the master list of audio tracks from the title
@end
@implementation HBAudio
- (instancetype)initWithTitle:(HBTitle *)title
{
self = [super init];
if (self)
{
_container = HB_MUX_MP4;
_tracks = [[NSMutableArray alloc] init];
_defaults = [[HBAudioDefaults alloc] init];
_noneTrack = @{keyAudioTrackIndex: @0,
keyAudioTrackName: NSLocalizedString(@"None", @"None"),
keyAudioInputCodec: @0};
NSMutableArray *sourceTracks = [NSMutableArray array];
[sourceTracks addObject:_noneTrack];
[sourceTracks addObjectsFromArray:title.audioTracks];
_masterTrackArray = [sourceTracks copy];
[self switchingTrackFromNone: nil]; // this ensures there is a None track at the end of the list
}
return self;
}
- (void)addAllTracks
{
[self addTracksFromDefaults:YES];
}
- (void)removeAll
{
[self _clearAudioArray];
[self switchingTrackFromNone:nil];
}
- (void)reloadDefaults
{
[self addTracksFromDefaults:NO];
}
- (void)_clearAudioArray
{
while (0 < [self countOfTracks])
{
[self removeObjectFromTracksAtIndex: 0];
}
}
/**
* Uses the templateAudioArray from the preset to create the audios for the specified trackIndex.
*
* @param templateAudioArray the track template.
* @param trackIndex the index of the source track.
* @param firstOnly use only the first track of the template or all.
*/
- (void)_processPresetAudioArray:(NSArray *)templateAudioArray forTrack:(NSUInteger)trackIndex firstOnly:(BOOL)firstOnly
{
for (HBAudioTrackPreset *preset in templateAudioArray)
{
BOOL fallenBack = NO;
HBAudioTrack *newAudio = [[HBAudioTrack alloc] init];
[newAudio setDataSource:self];
[newAudio setDelegate:self];
[self insertObject: newAudio inTracksAtIndex: [self countOfTracks]];
[newAudio setContainer:self.container];
[newAudio setTrackFromIndex: (int)trackIndex];
[newAudio setUndo:self.undo];
const char *name = hb_audio_encoder_get_name(preset.encoder);
NSString *audioEncoder = nil;
// Check if we need to use a fallback
if (name)
{
audioEncoder = @(name);
if (preset.encoder & HB_ACODEC_PASS_FLAG &&
![newAudio setCodecFromName:audioEncoder])
{
int passthru, fallback;
fallenBack = YES;
passthru = hb_audio_encoder_get_from_name([audioEncoder UTF8String]);
fallback = hb_audio_encoder_get_fallback_for_passthru(passthru);
name = hb_audio_encoder_get_name(fallback);
// If we couldn't find an encoder for the passthru format
// fall back to the selected encoder fallback
if (name == NULL)
{
name = hb_audio_encoder_get_name(self.defaults.encoderFallback);
}
}
else
{
name = hb_audio_encoder_sanitize_name([audioEncoder UTF8String]);
}
audioEncoder = @(name);
}
// If our preset wants us to support a codec that the track does not support, instead
// of changing the codec we remove the audio instead.
if ([newAudio setCodecFromName:audioEncoder])
{
const char *mixdown = hb_mixdown_get_name(preset.mixdown);
if (mixdown)
{
[newAudio setMixdownFromName: @(mixdown)];
}
const char *sampleRateName = hb_audio_samplerate_get_name(preset.sampleRate);
if (!sampleRateName)
{
[newAudio setSampleRateFromName: @"Auto"];
}
else
{
[newAudio setSampleRateFromName: @(sampleRateName)];
}
if (!fallenBack)
{
[newAudio setBitRateFromName: [NSString stringWithFormat:@"%d", preset.bitRate]];
}
[newAudio setDrc:preset.drc];
[newAudio setGain:preset.gain];
}
else
{
[self removeObjectFromTracksAtIndex: [self countOfTracks] - 1];
}
if (firstOnly)
{
break;
}
}
}
/**
* Matches the source audio tracks with the specific language iso code.
*
* @param isoCode the iso code to match.
* @param selectOnlyFirst whether to match only the first track for the iso code.
*
* @return a NSIndexSet with the index of the matched tracks.
*/
- (NSIndexSet *)_tracksWithISOCode:(NSString *)isoCode selectOnlyFirst:(BOOL)selectOnlyFirst
{
NSMutableIndexSet *indexes = [NSMutableIndexSet indexSet];
// We search for the prefix noting that our titles have the format %d: %s where the %s is the prefix
[self.masterTrackArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
if (idx) // Note that we skip the "None" track
{
if ([isoCode isEqualToString:@"und"] || [obj[keyAudioTrackLanguageIsoCode] isEqualToString:isoCode])
{
[indexes addIndex:idx];
if (selectOnlyFirst)
{
*stop = YES;
}
}
}
}];
return indexes;
}
- (void)_processPresetAudioArray:(NSArray *)templateAudioArray forTracks:(NSIndexSet *)trackIndexes firstOnly:(BOOL)firstOnly
{
__block BOOL firsTrack = firstOnly;
[trackIndexes enumerateIndexesUsingBlock:^(NSUInteger idx, BOOL *stop) {
// Add the track
[self _processPresetAudioArray: self.defaults.tracksArray forTrack:idx firstOnly:firsTrack];
firsTrack = self.defaults.secondaryEncoderMode ? YES : NO;
}];
}
- (void)addTracksFromDefaults:(BOOL)allTracks
{
BOOL firstTrack = NO;
NSMutableIndexSet *tracksAdded = [NSMutableIndexSet indexSet];
NSMutableIndexSet *tracksToAdd = [NSMutableIndexSet indexSet];
// Reinitialize the configured list of audio tracks
[self _clearAudioArray];
if (self.defaults.trackSelectionBehavior != HBAudioTrackSelectionBehaviorNone)
{
// Add tracks of Default and Alternate Language by name
for (NSString *languageISOCode in self.defaults.trackSelectionLanguages)
{
NSMutableIndexSet *tracksIndexes = [[self _tracksWithISOCode: languageISOCode
selectOnlyFirst: self.defaults.trackSelectionBehavior == HBAudioTrackSelectionBehaviorFirst] mutableCopy];
[tracksIndexes removeIndexes:tracksAdded];
if (tracksIndexes.count)
{
[self _processPresetAudioArray:self.defaults.tracksArray forTracks:tracksIndexes firstOnly:firstTrack];
firstTrack = self.defaults.secondaryEncoderMode ? YES : NO;
[tracksAdded addIndexes:tracksIndexes];
}
}
// If no preferred Language was found, add standard track 1
if (tracksAdded.count == 0 && self.masterTrackArray.count > 1)
{
[tracksToAdd addIndex:1];
}
}
// If all tracks should be added, add all track numbers that are not yet processed
if (allTracks)
{
[tracksToAdd addIndexesInRange:NSMakeRange(1, self.masterTrackArray.count - 1)];
[tracksToAdd removeIndexes:tracksAdded];
}
if (tracksToAdd.count)
{
[self _processPresetAudioArray:self.defaults.tracksArray forTracks:tracksToAdd firstOnly:firstTrack];
}
// Add an None item
[self switchingTrackFromNone: nil];
}
- (BOOL)anyCodecMatches:(int)codec
{
BOOL retval = NO;
NSUInteger audioArrayCount = [self countOfTracks];
for (NSUInteger i = 0; i < audioArrayCount && !retval; i++)
{
HBAudioTrack *anAudio = [self objectInTracksAtIndex: i];
if ([anAudio enabled] && codec == [[anAudio codec][keyAudioCodec] intValue])
{
retval = YES;
}
}
return retval;
}
- (void)addNewAudioTrack
{
HBAudioTrack *newAudio = [[HBAudioTrack alloc] init];
[newAudio setDataSource:self];
[newAudio setDelegate:self];
[self insertObject:newAudio inTracksAtIndex:[self countOfTracks]];
[newAudio setContainer:self.container];
[newAudio setTrack: self.noneTrack];
[newAudio setUndo:self.undo];
}
#pragma mark -
#pragma mark Notification Handling
- (void)settingTrackToNone:(HBAudioTrack *)newNoneTrack
{
// If this is not the last track in the array we need to remove it. We then need to see if a new
// one needs to be added (in the case when we were at maximum count and this switching makes it
// so we are no longer at maximum.
NSUInteger index = [self.tracks indexOfObject: newNoneTrack];
if (NSNotFound != index && index < [self countOfTracks] - 1)
{
[self removeObjectFromTracksAtIndex: index];
}
[self switchingTrackFromNone: nil]; // see if we need to add one to the list
}
- (void)switchingTrackFromNone:(HBAudioTrack *)noLongerNoneTrack
{
NSUInteger count = [self countOfTracks];
BOOL needToAdd = NO;
// If there is no last track that is None we add one.
if (0 < count)
{
HBAudioTrack *lastAudio = [self objectInTracksAtIndex: count - 1];
if ([lastAudio enabled])
{
needToAdd = YES;
}
}
else
{
needToAdd = YES;
}
if (needToAdd)
{
[self addNewAudioTrack];
}
}
// This gets called whenever the video container changes.
- (void)setContainer:(int)container
{
_container = container;
if (!(self.undo.isUndoing || self.undo.isRedoing))
{
// Update each of the instances because this value influences possible settings.
for (HBAudioTrack *audioObject in self.tracks)
{
audioObject.container = container;
}
// Update the Auto Passthru Fallback Codec Popup
// lets get the tag of the currently selected item first so we might reset it later
[self.defaults validateEncoderFallbackForVideoContainer:container];
}
}
- (void)setUndo:(NSUndoManager *)undo
{
_undo = undo;
for (HBAudioTrack *track in self.tracks)
{
track.undo = undo;
}
self.defaults.undo = undo;
}
- (void)setDefaults:(HBAudioDefaults *)defaults
{
if (defaults != _defaults)
{
[[self.undo prepareWithInvocationTarget:self] setDefaults:_defaults];
}
_defaults = defaults;
_defaults.undo = self.undo;
}
- (void)mixdownChanged
{
[[NSNotificationCenter defaultCenter] postNotificationName: HBAudioChangedNotification object: self];
}
#pragma mark - NSCopying
- (instancetype)copyWithZone:(NSZone *)zone
{
HBAudio *copy = [[[self class] alloc] init];
if (copy)
{
copy->_container = _container;
copy->_noneTrack = [_noneTrack copy];
copy->_masterTrackArray = [_masterTrackArray copy];
copy->_tracks = [[NSMutableArray alloc] init];
[_tracks enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
if (idx < _tracks.count)
{
HBAudioTrack *trackCopy = [obj copy];
trackCopy.dataSource = copy;
trackCopy.delegate = copy;
[copy->_tracks addObject:trackCopy];
}
}];
copy->_defaults = [_defaults copy];
}
return copy;
}
#pragma mark - NSCoding
+ (BOOL)supportsSecureCoding
{
return YES;
}
- (void)encodeWithCoder:(NSCoder *)coder
{
[coder encodeInt:1 forKey:@"HBAudioVersion"];
encodeInt(_container);
encodeObject(_noneTrack);
encodeObject(_masterTrackArray);
encodeObject(_tracks);
encodeObject(_defaults);
}
- (instancetype)initWithCoder:(NSCoder *)decoder
{
self = [super init];
decodeInt(_container);
decodeObject(_noneTrack, NSDictionary);
decodeObject(_masterTrackArray, NSArray);
decodeObject(_tracks, NSMutableArray);
for (HBAudioTrack *track in _tracks)
{
track.dataSource = self;
track.delegate = self;
}
decodeObject(_defaults, HBAudioDefaults);
return self;
}
#pragma mark - Presets
- (void)writeToPreset:(HBMutablePreset *)preset
{
[self.defaults writeToPreset:preset];
}
- (void)applyPreset:(HBPreset *)preset
{
[self.defaults applyPreset:preset];
[self addTracksFromDefaults:NO];
}
#pragma mark -
#pragma mark KVC
- (NSUInteger) countOfTracks
{
return self.tracks.count;
}
- (HBAudioTrack *)objectInTracksAtIndex:(NSUInteger)index
{
return self.tracks[index];
}
- (void)insertObject:(HBAudioTrack *)track inTracksAtIndex:(NSUInteger)index;
{
[[self.undo prepareWithInvocationTarget:self] removeObjectFromTracksAtIndex:index];
[self.tracks insertObject:track atIndex:index];
}
- (void)removeObjectFromTracksAtIndex:(NSUInteger)index
{
HBAudioTrack *track = self.tracks[index];
[[self.undo prepareWithInvocationTarget:self] insertObject:track inTracksAtIndex:index];
[self.tracks removeObjectAtIndex:index];
}
@end