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HDCD Decoder: Only process lossless tracks

CQTexperiment
Christopher Snowhill 2022-01-21 22:47:11 -08:00
parent 0c4d5002f6
commit 9d1fd08574
3 changed files with 22 additions and 11 deletions
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16
Audio/Chain/BufferChain.m
View File

@ -62,8 +62,10 @@
if (![inputNode openWithSource:source])
return NO;
NSDictionary * properties = [inputNode properties];
if (![converterNode setupWithInputFormat:(inputFormat = propertiesToASBD([inputNode properties])) outputFormat:outputFormat])
if (![converterNode setupWithInputFormat:(inputFormat = propertiesToASBD(properties)) outputFormat:outputFormat isLossless:[[properties valueForKey:@"encoding"] isEqualToString:@"lossless"]])
return NO;
[self setRGInfo:rgi];
@ -81,8 +83,10 @@
if (![inputNode openWithDecoder:[i decoder]])
return NO;
DLog(@"Input Properties: %@", [inputNode properties]);
if (![converterNode setupWithInputFormat:(inputFormat = propertiesToASBD([inputNode properties])) outputFormat:outputFormat])
NSDictionary * properties = [inputNode properties];
DLog(@"Input Properties: %@", properties);
if (![converterNode setupWithInputFormat:(inputFormat = propertiesToASBD(properties)) outputFormat:outputFormat isLossless:[[properties objectForKey:@"encoding"] isEqualToString:@"lossless"]])
return NO;
[self setRGInfo:rgi];
@ -100,8 +104,10 @@
if (![inputNode openWithDecoder:decoder])
return NO;
DLog(@"Input Properties: %@", [inputNode properties]);
if (![converterNode setupWithInputFormat:(inputFormat = propertiesToASBD([inputNode properties])) outputFormat:outputFormat])
NSDictionary * properties = [inputNode properties];
DLog(@"Input Properties: %@", properties);
if (![converterNode setupWithInputFormat:(inputFormat = propertiesToASBD(properties)) outputFormat:outputFormat isLossless:[[properties objectForKey:@"encoding"] isEqualToString:@"lossless"]])
return NO;
[self setRGInfo:rgi];

4
Audio/Chain/ConverterNode.h
View File

@ -59,6 +59,8 @@
size_t dsd2pcmCount;
int dsd2pcmLatency;
int dsdLatencyEaten;
BOOL rememberedLossless;
AudioStreamBasicDescription inputFormat;
AudioStreamBasicDescription floatFormat;
@ -79,7 +81,7 @@
- (id)initWithController:(id)c previous:(id)p;
- (BOOL)setupWithInputFormat:(AudioStreamBasicDescription)inputFormat outputFormat:(AudioStreamBasicDescription)outputFormat;
- (BOOL)setupWithInputFormat:(AudioStreamBasicDescription)inputFormat outputFormat:(AudioStreamBasicDescription)outputFormat isLossless:(BOOL)lossless;
- (void)cleanUp;
- (void)process;

13
Audio/Chain/ConverterNode.m
View File

@ -709,7 +709,7 @@ static void convert_be_to_le(uint8_t *buffer, size_t bitsPerSample, size_t bytes
[self setShouldContinue:YES];
refillNode = nil;
[self cleanUp];
[self setupWithInputFormat:rememberedInputFormat outputFormat:outputFormat];
[self setupWithInputFormat:rememberedInputFormat outputFormat:outputFormat isLossless:rememberedLossless];
continue;
}
else break;
@ -1153,12 +1153,14 @@ static float db_to_scale(float db)
}
- (BOOL)setupWithInputFormat:(AudioStreamBasicDescription)inf outputFormat:(AudioStreamBasicDescription)outf
- (BOOL)setupWithInputFormat:(AudioStreamBasicDescription)inf outputFormat:(AudioStreamBasicDescription)outf isLossless:(BOOL)lossless
{
//Make the converter
inputFormat = inf;
outputFormat = outf;
rememberedLossless = lossless;
// These are the only sample formats we support translating
BOOL isFloat = !!(inputFormat.mFormatFlags & kAudioFormatFlagIsFloat);
if ((!isFloat && !(inputFormat.mBitsPerChannel >= 1 && inputFormat.mBitsPerChannel <= 32))
@ -1166,7 +1168,8 @@ static float db_to_scale(float db)
return NO;
// These are really placeholders, as we're doing everything internally now
if (inputFormat.mBitsPerChannel == 16 &&
if (lossless &&
inputFormat.mBitsPerChannel == 16 &&
inputFormat.mChannelsPerFrame == 2 &&
inputFormat.mSampleRate == 44100) {
// possibly HDCD, run through decoder
@ -1315,11 +1318,11 @@ static float db_to_scale(float db)
break;
}
[self setupWithInputFormat:previousOutputFormat outputFormat:outputFormat];
[self setupWithInputFormat:previousOutputFormat outputFormat:outputFormat isLossless:rememberedLossless];
}
else
{
[self setupWithInputFormat:format outputFormat:outputFormat];
[self setupWithInputFormat:format outputFormat:outputFormat isLossless:rememberedLossless];
}
}