cog/Audio/Chain/AudioChunk.h

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//
// AudioChunk.h
// CogAudio Framework
//
// Created by Christopher Snowhill on 2/5/22.
//
#ifndef AudioChunk_h
#define AudioChunk_h
#import <CoreAudio/CoreAudio.h>
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
enum {
AudioChannelFrontLeft = 1 << 0,
AudioChannelFrontRight = 1 << 1,
AudioChannelFrontCenter = 1 << 2,
AudioChannelLFE = 1 << 3,
AudioChannelBackLeft = 1 << 4,
AudioChannelBackRight = 1 << 5,
AudioChannelFrontCenterLeft = 1 << 6,
AudioChannelFrontCenterRight = 1 << 7,
AudioChannelBackCenter = 1 << 8,
AudioChannelSideLeft = 1 << 9,
AudioChannelSideRight = 1 << 10,
AudioChannelTopCenter = 1 << 11,
AudioChannelTopFrontLeft = 1 << 12,
AudioChannelTopFrontCenter = 1 << 13,
AudioChannelTopFrontRight = 1 << 14,
AudioChannelTopBackLeft = 1 << 15,
AudioChannelTopBackCenter = 1 << 16,
AudioChannelTopBackRight = 1 << 17,
AudioConfigMono = AudioChannelFrontCenter,
AudioConfigStereo = AudioChannelFrontLeft | AudioChannelFrontRight,
AudioConfig3Point0 = AudioChannelFrontLeft | AudioChannelFrontRight |
AudioChannelFrontCenter,
AudioConfig4Point0 = AudioChannelFrontLeft | AudioChannelFrontRight |
AudioChannelBackLeft | AudioChannelBackRight,
AudioConfig5Point0 = AudioChannelFrontLeft | AudioChannelFrontRight |
AudioChannelFrontCenter | AudioChannelBackLeft |
AudioChannelBackRight,
AudioConfig5Point1 = AudioChannelFrontLeft | AudioChannelFrontRight |
AudioChannelFrontCenter | AudioChannelLFE |
AudioChannelBackLeft | AudioChannelBackRight,
AudioConfig5Point1Side = AudioChannelFrontLeft | AudioChannelFrontRight |
AudioChannelFrontCenter | AudioChannelLFE |
AudioChannelSideLeft | AudioChannelSideRight,
AudioConfig6Point1 = AudioChannelFrontLeft | AudioChannelFrontRight |
AudioChannelFrontCenter | AudioChannelLFE |
AudioChannelBackCenter | AudioChannelSideLeft |
AudioChannelSideRight,
AudioConfig7Point1 = AudioChannelFrontLeft | AudioChannelFrontRight |
AudioChannelFrontCenter | AudioChannelLFE |
AudioChannelBackLeft | AudioChannelBackRight |
AudioChannelSideLeft | AudioChannelSideRight,
AudioChannelsBackLeftRight = AudioChannelBackLeft | AudioChannelBackRight,
AudioChannelsSideLeftRight = AudioChannelSideLeft | AudioChannelSideRight,
};
@interface AudioChunk : NSObject {
AudioStreamBasicDescription format;
NSMutableData *chunkData;
uint32_t channelConfig;
BOOL formatAssigned;
BOOL lossless;
BOOL hdcd;
}
@property AudioStreamBasicDescription format;
@property uint32_t channelConfig;
@property BOOL lossless;
+ (uint32_t)guessChannelConfig:(uint32_t)channelCount;
+ (uint32_t)channelIndexFromConfig:(uint32_t)channelConfig forFlag:(uint32_t)flag;
+ (uint32_t)extractChannelFlag:(uint32_t)index fromConfig:(uint32_t)channelConfig;
+ (uint32_t)countChannels:(uint32_t)channelConfig;
+ (uint32_t)findChannelIndex:(uint32_t)flag;
- (id)init;
- (id)initWithProperties:(NSDictionary *)properties;
- (void)assignSamples:(const void *)data frameCount:(size_t)count;
- (void)assignData:(NSData *)data;
- (NSData *)removeSamples:(size_t)frameCount;
- (BOOL)isEmpty;
- (size_t)frameCount;
- (void)setFrameCount:(size_t)count; // For truncation only
- (double)duration;
- (BOOL)isHDCD;
- (void)setHDCD;
@end
NS_ASSUME_NONNULL_END
#endif /* AudioChunk_h */