48 lines
951 B
C++
48 lines
951 B
C++
#pragma once
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#include "foundation/types.h"
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class MPEGHeader
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{
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public:
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void ReadBuffer(const uint8_t *buffer);
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int GetNumChannels() const;
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bool IsSync() const;
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int GetBitrate() const;
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int HeaderSize() const;
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int GetSampleRate() const;
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int FrameSize() const;
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int GetLayer() const;
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bool IsCRC() const;
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bool IsCopyright() const;
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bool IsOriginal() const;
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int GetSamplesPerFrame() const;
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enum
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{
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NotPadded=0,
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Padded=1,
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CRC = 0,
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NoProtection = 1,
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Stereo = 0,
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JointStereo = 1,
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DualChannel = 2,
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Mono = 3,
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MPEG1 = 3,
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MPEG2 = 2,
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MPEG_Error = 1,
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MPEG2_5 = 0,
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Layer1 = 3,
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Layer2 = 2,
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Layer3 = 1,
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LayerError = 0,
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Emphasis_None = 0,
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Emphasis_50_15_ms = 1,
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Emphasis_reserved = 2,
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Emphasis_CCIT_J_17 = 3,
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};
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uint16_t sync;
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uint8_t mpeg_version, layer, protection, bitrate_index;
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uint8_t padding_bit, private_bit, channel_mode, mode_extension;
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uint8_t sample_rate_index, copyright, original, emphasis;
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};
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