mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-11 17:41:23 -05:00
63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
|
#if !defined(MP3HEADER_HPP)
|
||
|
|
#define MP3HEADER_HPP
|
||
|
|
|
||
|
|
#include <iosfwd>
|
||
|
|
|
||
|
|
class Mp3Header
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
Mp3Header(unsigned long);
|
||
|
|
unsigned long id;
|
||
|
|
unsigned long layer;
|
||
|
|
unsigned long protectionBit;
|
||
|
|
unsigned long bitRateIndex;
|
||
|
|
unsigned long samplingFrequency;
|
||
|
|
unsigned long paddingBit;
|
||
|
|
unsigned long privateBit;
|
||
|
|
unsigned long mode;
|
||
|
|
unsigned long modeExtension;
|
||
|
|
unsigned long copyright;
|
||
|
|
unsigned long originalOrCopy;
|
||
|
|
unsigned long emphasis;
|
||
|
|
unsigned long nch;
|
||
|
|
unsigned long sampleRate;
|
||
|
|
unsigned long bitRate;
|
||
|
|
unsigned long frameSize;
|
||
|
|
unsigned short outFrameSize;
|
||
|
|
|
||
|
|
enum { BITRATE_FREE = 0 };
|
||
|
|
enum { MPEG_FORBIDDEN = -1};
|
||
|
|
enum { SAMPLING_FREQUENCY_RESERVED = -1};
|
||
|
|
|
||
|
|
enum IdTypes
|
||
|
|
{
|
||
|
|
MPEG1 = 1,
|
||
|
|
MPEG2 = 2
|
||
|
|
};
|
||
|
|
|
||
|
|
enum AudioMode
|
||
|
|
{
|
||
|
|
STEREO_MODE = 0,
|
||
|
|
JOINT_STEREO_MODE = 1,
|
||
|
|
DUAL_CHANNEL_MODE = 2,
|
||
|
|
SINGLE_CHANNEL_MODE = 3
|
||
|
|
};
|
||
|
|
|
||
|
|
/* layer code, very bad design */
|
||
|
|
enum AudioLayer
|
||
|
|
{
|
||
|
|
AUDIO_LAYER_1 = 3,
|
||
|
|
AUDIO_LAYER_2 = 2,
|
||
|
|
AUDIO_LAYER_3 = 1,
|
||
|
|
AUDIO_LAYER_RESERVED = 0
|
||
|
|
};
|
||
|
|
friend std::ostream& operator<<(std::ostream& os, const Mp3Header& mp3);
|
||
|
|
|
||
|
|
private:
|
||
|
|
static const unsigned short samplingFrequencyTable[2][4];
|
||
|
|
static const short m1BitRateTable[3][16];
|
||
|
|
static const short m2BitRateTable[3][16];
|
||
|
|
static const unsigned short outFrameSizes[2][4];
|
||
|
|
|
||
|
|
};
|
||
|
|
#endif
|