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Added seeking to quicktime decoder.

CQTexperiment
vspader 2007-06-10 22:21:50 +00:00
parent 96ed93e5eb
commit 2402daac91
2 changed files with 22 additions and 14 deletions
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7
Plugins/Quicktime/QuicktimeDecoder.h
View File

@ -16,12 +16,7 @@
@interface QuicktimeDecoder : NSObject <CogDecoder> {
AudioStreamBasicDescription _asbd;
MovieAudioExtractionRef _extractionSessionRef;
int bitrate;
int bitsPerSample;
int channels;
float frequency;
double length;
Movie _movie;
unsigned long _totalFrames;
}

29
Plugins/Quicktime/QuicktimeDecoder.m
View File

@ -19,14 +19,12 @@
OSErr error;
Handle dataRef;
OSType dataRefType;
Movie soundToPlay;
AudioChannelLayout* layout = nil;
UInt32 size = 0;
NSLog(@"EnterMovies...");
EnterMovies();
NSLog(@"Creating new data reference...");
error = QTNewDataReferenceFromCFURL((CFURLRef)url, 0, &dataRef, &dataRefType);
NSLog(@" %d",error);
@ -34,14 +32,14 @@
NSLog(@"Creating new movie...");
short fileID = movieInDataForkResID;
short flags = 0;
error = NewMovieFromDataRef(&soundToPlay, flags, &fileID, dataRef, dataRefType);
error = NewMovieFromDataRef(&_movie, flags, &fileID, dataRef, dataRefType);
NSLog(@" %d",error);
NSLog(@"Setting movie active...");
SetMovieActive(soundToPlay, TRUE);
SetMovieActive(_movie, TRUE);
NSLog(@"Beginning extraction session...");
error = MovieAudioExtractionBegin(soundToPlay, 0, &_extractionSessionRef);
error = MovieAudioExtractionBegin(_movie, 0, &_extractionSessionRef);
NSLog(@" %d",error);
NSLog(@"Getting property info...");
@ -111,7 +109,7 @@
NSLog(@" channels/frame = %d",_asbd.mChannelsPerFrame);
NSLog(@" b/channel = %d",_asbd.mBitsPerChannel);
_totalFrames = _asbd.mSampleRate * ((float) GetMovieDuration(soundToPlay) / (float) GetMovieTimeScale(soundToPlay));
_totalFrames = _asbd.mSampleRate * ((float) GetMovieDuration(_movie) / (float) GetMovieTimeScale(_movie));
[self willChangeValueForKey:@"properties"];
[self didChangeValueForKey:@"properties"];
@ -155,7 +153,22 @@
- (double) seekToTime:(double)milliseconds
{
return 0.0;
OSErr error;
TimeRecord timeRec;
timeRec.scale = GetMovieTimeScale(_movie);
timeRec.base = NULL;
timeRec.value.hi = 0;
timeRec.value.lo = (milliseconds/1000.0) * timeRec.scale;
error = MovieAudioExtractionSetProperty(_extractionSessionRef, kQTPropertyClass_MovieAudioExtraction_Movie, kQTMovieAudioExtractionMoviePropertyID_CurrentTime, sizeof(timeRec), &timeRec);
if (error)
{
NSLog(@"Error seeking! %i", error);
return 0.0;
}
return milliseconds;
}
+ (NSArray *)fileTypes
@ -208,7 +221,7 @@
[NSNumber numberWithInt:0],@"bitrate",
[NSNumber numberWithFloat:_asbd.mSampleRate],@"sampleRate",
[NSNumber numberWithDouble:_totalFrames/(_asbd.mSampleRate/1000.0)],@"length",
[NSNumber numberWithBool:NO], @"seekable",
[NSNumber numberWithBool:YES], @"seekable",
@"big", @"endian",
nil];
}