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#include "FLVHeader.h"
#include "FLVUtil.h"
/*
(c) 2006 Nullsoft, Inc.
Author: Ben Allison benski@nullsoft.com
*/
#define FLV_BITMASK_AUDIO 0x4
#define FLV_BITMASK_VIDEO 0x1
/*
FLV Header spec
Signature - uint8[3] - must equal "FLV"
Version - uint8 - only known version is 1
Flags - uint8 - bitmask, 4 is audio, 1 is video
Offset - uint32 - total size of header (9), big endian
*/
bool FLVHeader::Read(uint8_t *data, size_t size)
{
if (size < 9)
return false; // too small to be an FLV header
if (data[0] != 'F' || data[1] != 'L' || data[2] != 'V')
return false; // invalid signature
version = data[3];
hasAudio = !!(data[4] & FLV_BITMASK_AUDIO);
hasVideo = data[4] & FLV_BITMASK_VIDEO;
headerSize = FLV::Read32(&data[5]);
if (headerSize != 9)
return false;
return true;
}
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