3c351f6968
readAudio now returns an AudioChunk object directly, and all inputs have been changed to accomodate this. Also, input and converter processing have been altered to better work with this. Signed-off-by: Christopher Snowhill <kode54@gmail.com>
100 lines
3.4 KiB
Objective-C
100 lines
3.4 KiB
Objective-C
//
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// AudioChunk.h
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// CogAudio Framework
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//
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// Created by Christopher Snowhill on 2/5/22.
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//
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#ifndef AudioChunk_h
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#define AudioChunk_h
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#import <CoreAudio/CoreAudio.h>
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#import <Foundation/Foundation.h>
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NS_ASSUME_NONNULL_BEGIN
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enum {
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AudioChannelFrontLeft = 1 << 0,
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AudioChannelFrontRight = 1 << 1,
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AudioChannelFrontCenter = 1 << 2,
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AudioChannelLFE = 1 << 3,
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AudioChannelBackLeft = 1 << 4,
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AudioChannelBackRight = 1 << 5,
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AudioChannelFrontCenterLeft = 1 << 6,
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AudioChannelFrontCenterRight = 1 << 7,
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AudioChannelBackCenter = 1 << 8,
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AudioChannelSideLeft = 1 << 9,
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AudioChannelSideRight = 1 << 10,
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AudioChannelTopCenter = 1 << 11,
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AudioChannelTopFrontLeft = 1 << 12,
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AudioChannelTopFrontCenter = 1 << 13,
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AudioChannelTopFrontRight = 1 << 14,
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AudioChannelTopBackLeft = 1 << 15,
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AudioChannelTopBackCenter = 1 << 16,
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AudioChannelTopBackRight = 1 << 17,
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AudioConfigMono = AudioChannelFrontCenter,
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AudioConfigStereo = AudioChannelFrontLeft | AudioChannelFrontRight,
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AudioConfig3Point0 = AudioChannelFrontLeft | AudioChannelFrontRight |
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AudioChannelFrontCenter,
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AudioConfig4Point0 = AudioChannelFrontLeft | AudioChannelFrontRight |
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AudioChannelBackLeft | AudioChannelBackRight,
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AudioConfig5Point0 = AudioChannelFrontLeft | AudioChannelFrontRight |
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AudioChannelFrontCenter | AudioChannelBackLeft |
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AudioChannelBackRight,
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AudioConfig5Point1 = AudioChannelFrontLeft | AudioChannelFrontRight |
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AudioChannelFrontCenter | AudioChannelLFE |
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AudioChannelBackLeft | AudioChannelBackRight,
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AudioConfig5Point1Side = AudioChannelFrontLeft | AudioChannelFrontRight |
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AudioChannelFrontCenter | AudioChannelLFE |
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AudioChannelSideLeft | AudioChannelSideRight,
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AudioConfig6Point1 = AudioChannelFrontLeft | AudioChannelFrontRight |
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AudioChannelFrontCenter | AudioChannelLFE |
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AudioChannelBackCenter | AudioChannelSideLeft |
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AudioChannelSideRight,
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AudioConfig7Point1 = AudioChannelFrontLeft | AudioChannelFrontRight |
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AudioChannelFrontCenter | AudioChannelLFE |
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AudioChannelBackLeft | AudioChannelBackRight |
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AudioChannelSideLeft | AudioChannelSideRight,
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AudioChannelsBackLeftRight = AudioChannelBackLeft | AudioChannelBackRight,
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AudioChannelsSideLeftRight = AudioChannelSideLeft | AudioChannelSideRight,
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};
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@interface AudioChunk : NSObject {
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AudioStreamBasicDescription format;
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NSMutableData *chunkData;
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uint32_t channelConfig;
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BOOL formatAssigned;
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BOOL lossless;
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}
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@property AudioStreamBasicDescription format;
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@property uint32_t channelConfig;
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@property BOOL lossless;
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+ (uint32_t)guessChannelConfig:(uint32_t)channelCount;
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+ (uint32_t)channelIndexFromConfig:(uint32_t)channelConfig forFlag:(uint32_t)flag;
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+ (uint32_t)extractChannelFlag:(uint32_t)index fromConfig:(uint32_t)channelConfig;
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+ (uint32_t)countChannels:(uint32_t)channelConfig;
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+ (uint32_t)findChannelIndex:(uint32_t)flag;
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- (id)init;
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- (id)initWithProperties:(NSDictionary *)properties;
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- (void)assignSamples:(const void *)data frameCount:(size_t)count;
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- (NSData *)removeSamples:(size_t)frameCount;
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- (BOOL)isEmpty;
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- (size_t)frameCount;
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- (void)setFrameCount:(size_t)count; // For truncation only
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- (double)duration;
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@end
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NS_ASSUME_NONNULL_END
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#endif /* AudioChunk_h */
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