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FLVWriter.c
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FLVWriter.c
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#include "FLVWriter.h"
#include <stdlib.h>
#include <string.h>
#include <time.h>
/* file */
#define FLV_TAG_TYPE_AUDIO 8
#define FLV_TAG_TYPE_VIDEO 9
#define FLV_TAG_TYPE_SCRIPT 18
/* video */
#define FLV_V_FRAME_TYPE_I 1
#define FLV_V_FRAME_TYPE_P 2
#define FLV_V_CODECID_AVC 7
#define FLV_AVCPACKET_TYPE_SPS 0
#define FLV_AVCPACKET_TYPE_NALU 1
/* audio */
#define FLV_A_FORMATE_AAC 10
#define FLV_A_SAMPLE_RATE_5K 0
#define FLV_A_SAMPLE_RATE_11K 1
#define FLV_A_SAMPLE_RATE_22K 2
#define FLV_A_SAMPLE_RATE_44K 3
#define FLV_A_SAMPLE_SIZE_8b 0
#define FLV_A_SAMPLE_SIZE_16b 1
#define FLV_A_SOUND_TYPE_MONO 0
#define FLV_A_SOUND_TYPE_STEREO 1
#define FLV_AACPACKET_TYPE_HEADER 0
#define FLV_AACPACKET_TYPE_RAW 1
/* script */
#define FLV_STRING_METADATA "onMetaData"
#define FLV_STRING_METADATA_LEN (sizeof(FLV_STRING_METADATA) - 1)
#define FLV_STRING_DURATION "duration"
#define FLV_STRING_DURATION_LEN (sizeof(FLV_STRING_DURATION) - 1)
#define FLV_STRING_WIDTH "width"
#define FLV_STRING_WIDTH_LEN (sizeof(FLV_STRING_WIDTH) - 1)
#define FLV_STRING_HEIGHT "height"
#define FLV_STRING_HEIGHT_LEN (sizeof(FLV_STRING_HEIGHT) - 1)
#define FLV_STRING_FRAMERATE "framerate"
#define FLV_STRING_FRAMERATE_LEN (sizeof(FLV_STRING_FRAMERATE) - 1)
#define FLV_STRING_VCODECID "videocodecid"
#define FLV_STRING_VCODECID_LEN (sizeof(FLV_STRING_VCODECID) - 1)
#define FLV_STRING_VDATARATE "videodatarate"
#define FLV_STRING_VDATARATE_LEN (sizeof(FLV_STRING_VDATARATE) - 1)
#define FLV_STRING_ADATARATE "audiodatarate"
#define FLV_STRING_ADATARATE_LEN (sizeof(FLV_STRING_ADATARATE) - 1)
#define FLV_STRING_ASAMPLERATE "audiosamplerate"
#define FLV_STRING_ASAMPLERATE_LEN (sizeof(FLV_STRING_ASAMPLERATE) - 1)
#define FLV_STRING_ASAMPLESIZE "audiosamplesize"
#define FLV_STRING_ASAMPLESIZE_LEN (sizeof(FLV_STRING_ASAMPLESIZE) - 1)
#define FLV_STRING_STEREO "stereo"
#define FLV_STRING_STEREO_LEN (sizeof(FLV_STRING_STEREO) - 1)
#define FLV_STRING_ACODECID "audiocodecid"
#define FLV_STRING_ACODECID_LEN (sizeof(FLV_STRING_ACODECID) - 1)
#define FLV_STRING_DATE "creationdate"
#define FLV_STRING_DATE_LEN (sizeof(FLV_STRING_DATE) - 1)
#define FLV_STRING_AUTHOR "author"
#define FLV_STRING_AUTHOR_LEN (sizeof(FLV_STRING_AUTHOR) - 1)
#define FLV_SCRIPT_VALUE_TYPE_NUM 0
#define FLV_SCRIPT_VALUE_TYPE_BOOL 1
#define FLV_SCRIPT_VALUE_TYPE_STRING 2
#define FLV_SCRIPT_VALUE_TYPE_OBJECT 3
#define WRITE_BUF(pDest, DestSize, pSrc, SrcSize) \
do \
{ \
if ((SrcSize) > DestSize) \
return -1; \
memcpy((void*)pDest, (void*)(pSrc), (size_t)(SrcSize)); \
pDest = ((u8*)pDest) + (SrcSize); \
DestSize -= (SrcSize); \
}while(0)
#define WRITE_STRING(pDest, DestSize, pSrc, SrcSize) \
do \
{ \
if ((SrcSize) + 2 > DestSize) \
return -1; \
((u8*)pDest)[0] = 0xff & (((u16)(SrcSize)) >> 8); \
((u8*)pDest)[1] = 0xff & ((u16)(SrcSize)); \
pDest = ((u8*)pDest) + 2; \
DestSize -= 2; \
memcpy((void*)pDest, (void*)(pSrc), (size_t)(SrcSize)); \
pDest = ((u8*)pDest) + (SrcSize); \
DestSize -= (SrcSize); \
}while(0)
/* 自动转成大端 */
#define WRITE_U32(pDest, Size, Value) \
do \
{ \
if (4 > Size) \
return -1; \
((u8*)pDest)[0] = 0xff & (((u32)(Value)) >> 24); \
((u8*)pDest)[1] = 0xff & (((u32)(Value)) >> 16); \
((u8*)pDest)[2] = 0xff & (((u32)(Value)) >> 8); \
((u8*)pDest)[3] = 0xff & ((u32)(Value)); \
pDest = ((u8*)pDest) + 4; \
Size -= 4; \
}while(0)
#define WRITE_U24(pDest, Size, Value) \
do \
{ \
if (3 > Size) \
return -1; \
((u8*)(pDest))[0] = 0xff & (((u32)(Value)) >> 16); \
((u8*)(pDest))[1] = 0xff & (((u32)(Value)) >> 8); \
((u8*)(pDest))[2] = 0xff & ((u32)(Value)); \
pDest = ((u8*)pDest) + 3; \
Size -= 3; \
}while(0)
#define WRITE_U16(pDest, Size, Value) \
do \
{ \
if (2 > Size) \
return -1; \
((u8*)(pDest))[0] = 0xff & (((u16)(Value)) >> 8); \
((u8*)(pDest))[1] = 0xff & ((u16)(Value)); \
pDest = ((u8*)pDest) + 2; \
Size -= 2; \
}while(0)
#define WRITE_U8(pDest, Size, Value) \
do \
{ \
if (1 > Size) \
return -1; \
((u8*)pDest)[0] = (u8)(Value); \
pDest = ((u8*)pDest) + 1; \
Size -= 1; \
}while(0)
#define WRITE_DOUBLE(pDest, Size, Var) \
do \
{ \
if (8 > Size) \
return -1; \
((u8*)(pDest))[0] = 0xff & ((*(u64*)(&(Var))) >> 56); \
((u8*)(pDest))[1] = 0xff & ((*(u64*)(&(Var))) >> 48); \
((u8*)(pDest))[2] = 0xff & ((*(u64*)(&(Var))) >> 40); \
((u8*)(pDest))[3] = 0xff & ((*(u64*)(&(Var))) >> 32); \
((u8*)(pDest))[4] = 0xff & ((*(u64*)(&(Var))) >> 24); \
((u8*)(pDest))[5] = 0xff & ((*(u64*)(&(Var))) >> 16); \
((u8*)(pDest))[6] = 0xff & ((*(u64*)(&(Var))) >> 8); \
((u8*)(pDest))[7] = 0xff & (*(u64*)(&(Var))); \
pDest = ((u8*)pDest) + 8; \
Size -= 8; \
}while(0)
#pragma pack (1)
#if __BYTE_ORDER__==__ORDER_BIG_ENDIAN__
typedef struct
{
u8 aSignature[3]; /* FLV */
u8 Version; /* 1 */
u8 rsv1:5; /* 0 */
u8 TypeFlagAudio:1; /* 是否有音频数据 */
u8 rsv2:1; /* 0 */
u8 TypeFlagVideo:1; /* 是否有视频数据 */
u8 aDataOffset[4]; /* 这个头的长度, 9 */
}T_FileHeader;
#elif __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__
typedef struct
{
u8 aSignature[3]; /* FLV */
u8 Version; /* 1 */
u8 TypeFlagVideo:1; /* 是否有视频数据 */
u8 rsv2:1; /* 0 */
u8 TypeFlagAudio:1; /* 是否有音频数据 */
u8 rsv1:5; /* 0 */
u8 aDataOffset[4]; /* 这个头的长度, 9 */
}T_FileHeader;
#else
#error need define __BYTE_ORDER__
#endif
#if __BYTE_ORDER__==__ORDER_BIG_ENDIAN__
typedef struct
{
u8 rsv:2; /* 0 */
u8 Filter:1; /* 是否需要解密等预处理 */
u8 TagType:5; /* 8:audio, 9:video, 18:script */
u8 aDateSize[3]; /* 从StreamID后面开始，到tag结束的长度，即tag总长度-11 */
u8 aTimestamp[3]; /* 时间戳低3字节，毫秒 */
u8 TimeStampEx; /* 时间戳高1字节，总共可以扩展成4字节 */
u8 aStreamID[3]; /* 0 */
}T_TagHeader;
#elif __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__
typedef struct
{
u8 TagType:5; /* 8:audio, 9:video, 18:script */
u8 Filter:1; /* 是否需要解密等预处理 */
u8 rsv:2; /* 0 */
u8 aDateSize[3]; /* 从StreamID后面开始，到tag结束的长度，即tag总长度-11 */
u8 aTimestamp[3]; /* 时间戳低3字节，毫秒 */
u8 TimeStampEx; /* 时间戳高1字节，总共可以扩展成4字节 */
u8 aStreamID[3]; /* 0 */
}T_TagHeader;
#else
#error need define __BYTE_ORDER__
#endif
/*
FrameType. The following values are defined:
1 = key frame (for AVC, a seekable frame)
2 = inter frame (for AVC, a non-seekable frame)
3 = disposable inter frame (H.263 only)
4 = generated key frame (reserved for server use only)
5 = video info/command frame
CodecID. The following values are defined:
2 = Sorenson H.263
3 = Screen video
4 = On2 VP6
5 = On2 VP6 with alpha channel
6 = Screen video version 2
7 = AVC
*/
#if __BYTE_ORDER__==__ORDER_BIG_ENDIAN__
typedef struct
{
u8 FrameType:4;
u8 CodecID:4;
}T_VideoHeader;
#elif __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__
typedef struct
{
u8 CodecID:4;
u8 FrameType:4;
}T_VideoHeader;
#else
#error need define __BYTE_ORDER__
#endif
/*
0 = AVC sequence header
1 = AVC NALU
2 = AVC end of sequence (lower level NALU sequence ender is not required or supported)
*/
typedef struct
{
u8 PacketType;
u8 aCompostionTime[3];
}T_AVCPacketHeader;
#if __BYTE_ORDER__==__ORDER_BIG_ENDIAN__
typedef struct
{
u8 Version; /* 1 */
u8 ProfileIndication;
u8 ProfileCompatibility; /* sps中Profile和Level字段中间的那个字节 */
u8 AVCLevelIndication;
u8 rsv:6; /* 111111 */
u8 LengthSizeMinusOne:2;
/*
u8 rsv2:3; // 111
u8 SPSNum:5;
u16 SPSLen;
SPSData;
u8 PPSNum;
u16 PPSLen;
PPSData;
...
*/
}T_AVCDecoderConfig;
#elif __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__
typedef struct
{
u8 Version; /* 1 */
u8 ProfileIndication;
u8 ProfileCompatibility; /* sps中Profile和Level字段中间的那个字节 */
u8 AVCLevelIndication;
u8 LengthSizeMinusOne:2;
u8 rsv:6; /* 111111 */
}T_AVCDecoderConfig;
#else
#error need define __BYTE_ORDER__
#endif
/*
Format of SoundData.
0 = Linear PCM, platform endian
1 = ADPCM
2 = MP3
3 = Linear PCM, little endian
4 = Nellymoser 16 kHz mono
5 = Nellymoser 8 kHz mono
6 = Nellymoser
7 = G.711 A-law logarithmic PCM
8 = G.711 mu-law logarithmic PCM
9 = reserved
10 = AAC
11 = Speex
14 = MP3 8 kHz
15 = Device-specific sound
Formats 7, 8, 14, and 15 are reserved.
Sampling rate
0:5.5 kHz 1:11 kHz 2:22 kHz 3:44 kHz
SoundSize. This parameter only pertains to uncompressed formats. Compressed formats always decode to 16 bits internally.
0:8-bit samples 1:16-bit samples
SoundType
0:Mono sound 1:Stereo sound
*/
#if __BYTE_ORDER__==__ORDER_BIG_ENDIAN__
typedef struct
{
u8 SoundFormat:4;
u8 SoundRate:2;
u8 SoundSize:1;
u8 SoundType:1;
}T_AudioHeader;
#elif __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__
typedef struct
{
u8 SoundType:1;
u8 SoundSize:1;
u8 SoundRate:2;
u8 SoundFormat:4;
}T_AudioHeader;
#else
#error need define __BYTE_ORDER__
#endif
/*
AACPacketType
0:AAC sequence header 1:AAC raw
*/
typedef struct
{
u8 AACPacketType;
}T_AACPacketHeader;
#pragma pack ()
typedef struct
{
FILE *fp;
u8 *pBuf;
u32 BufSize;
u32 Duration; /* in ms */
u8 HaveWritenSPS;
}T_FileInfo;
/* http://wiki.multimedia.cx/index.php?title=MPEG-4_Audio */
static s8 GetSampleRateID(u32 SamplRate)
{
switch (SamplRate)
{
case 96000: return 0;
case 88200: return 1;
case 64000: return 2;
case 48000: return 3;
case 44100: return 4;
case 32000: return 5;
case 24000: return 6;
case 22050: return 7;
case 16000: return 8;
case 12000: return 9;
case 11025: return 10;
case 8000 : return 11;
case 7350 : return 12;
default: return -1;
}
}
static s32 GetAudioSpecificConfig(u8 *pBuf, u32 Size, u8 AudioType, u32 SampleRate, u8 Channel)
{
u16 Config;
s8 SampleRateID;
SampleRateID = GetSampleRateID(SampleRate);
if (0 > SampleRateID)
return -1;
Config = (AudioType & 0x1f);
Config <<= 4;
Config |= SampleRateID & 0x0f;
Config <<= 4;
Config |= Channel & 0x0f;
Config <<= 3;
pBuf[0] = (Config >> 8) & 0xff;
pBuf[1] = Config & 0xff;
return 2;
}
/* 返回的数据包括起始的4个字节0x00000001 */
static u8* Find264Nalu(const u8 *pData, u32 Size, u8 *pNaluType, u32 *pNaluSize)
{
const u8 *pCur;
const u8 *pEnd;
const u8 *pOut;
u8 NaluType;
if (4 >= Size)
return NULL;
/* 找第一个0x00000001 */
pCur = pData;
pEnd = pData + Size - 4;
while (pCur < pEnd)
{
if ( (0 == pCur[0]) && (0 == pCur[1]) && (0 == pCur[2]) && (1 == pCur[3]) )
break;
pCur++;
}
if (pCur >= pEnd)
return NULL;
NaluType = pCur[4] & 0x1f;
*pNaluType = NaluType;
if (1 == NaluType || 5 == NaluType) /* P帧、I帧, 假设每一包里P帧I帧都是最后一个 */
{
*pNaluSize = Size - (pCur - pData);
return (u8*)pCur;
}
pOut = pCur;
/* 找第二个0x00000001 */
pCur += 5;
while (pCur <= pEnd)
{
if ( (0 == pCur[0]) && (0 == pCur[1]) && (0 == pCur[2]) && (1 == pCur[3]) )
break;
pCur++;
}
if (pCur <= pEnd)
{
*pNaluSize = pCur - pOut;
return (u8*)pOut;
}
*pNaluSize = Size - (pOut - pData);
return (u8*)pOut;
}
static s32 GetFileHeader(T_FLVConfig *pConf, u8 *pBuf, u32 Size)
{
T_FileHeader *pHeader = (T_FileHeader *)pBuf;
if (sizeof(T_FileHeader) > Size)
return -1;
pHeader->aSignature[0] = 'F';
pHeader->aSignature[1] = 'L';
pHeader->aSignature[2] = 'V';
pHeader->Version = 1;
pHeader->rsv1 = 0;
pHeader->rsv2 = 0;
pHeader->TypeFlagAudio = !!(pConf->AudioFlag);
pHeader->TypeFlagVideo = !!(pConf->VideoFlag);
pHeader->aDataOffset[0] = 0;
pHeader->aDataOffset[1] = 0;
pHeader->aDataOffset[2] = 0;
pHeader->aDataOffset[3] = 9;
pBuf += sizeof(T_FileHeader);
Size -= sizeof(T_FileHeader);
WRITE_U32(pBuf, Size, 0);
return sizeof(T_FileHeader) + 4;
}
static s32 GetTagHeader(u8 *pBuf, u32 BufSize, u8 Type, u32 TimeStamp)
{
T_TagHeader *pHeader = (T_TagHeader *)pBuf;
if (sizeof(T_TagHeader) > BufSize)
return -1;
pHeader->rsv = 0;
pHeader->Filter = 0;
pHeader->TagType = 0x1f & Type;
pHeader->aDateSize[0] = 0;
pHeader->aDateSize[1] = 0;
pHeader->aDateSize[2] = 0;
pHeader->aTimestamp[0] = 0xff & (TimeStamp >> 16);
pHeader->aTimestamp[1] = 0xff & (TimeStamp >> 8);
pHeader->aTimestamp[2] = 0xff & TimeStamp;
pHeader->TimeStampEx = 0xff & (TimeStamp >> 24);
pHeader->aStreamID[0] = 0;
pHeader->aStreamID[1] = 0;
pHeader->aStreamID[2] = 0;
return sizeof(T_TagHeader);
}
static void SetTagHeaderSize(u8 *pBuf, u32 TagSize)
{
T_TagHeader *pHeader = (T_TagHeader *)pBuf;
pHeader->aDateSize[0] = 0xff & (TagSize >> 16);
pHeader->aDateSize[1] = 0xff & (TagSize >> 8);
pHeader->aDateSize[2] = 0xff & TagSize;
return;
}
/*
FrameType
1:key frame 2:inter frame
CodecID
7:AVC
PacketType
0:AVC sequence header 1:AVC NALU
*/
static s32 GetVideoHeader(u8 *pBuf, u32 Size, u8 FrameType, u8 CodecID, u8 PacketType)
{
T_VideoHeader *pVideoHeader = NULL;
T_AVCPacketHeader *pAVCHeader = NULL;
if (sizeof(*pVideoHeader) > Size)
return -1;
pVideoHeader = (T_VideoHeader *)pBuf;
pVideoHeader->FrameType = 0xf & FrameType;
pVideoHeader->CodecID = 0xf & CodecID;
if (FLV_V_CODECID_AVC != CodecID)
{
return sizeof(*pVideoHeader);
}
pBuf += sizeof(*pVideoHeader);
Size -= sizeof(*pVideoHeader);
if (sizeof(*pAVCHeader) > Size)
return -1;
pAVCHeader = (T_AVCPacketHeader *)pBuf;
pAVCHeader->PacketType = PacketType;
pAVCHeader->aCompostionTime[0] = 0;
pAVCHeader->aCompostionTime[1] = 0;
pAVCHeader->aCompostionTime[2] = 0;
return sizeof(*pVideoHeader) + sizeof(*pAVCHeader);
}
static s32 GetAVCDecoderConfig(u8 *pBuf, u32 BufSize, const u8 *pH264Data, u32 DataSize)
{
u8 *pCur = pBuf;
u8 *pNalu;
u8 NaluType;
u32 NaluSize;
T_AVCDecoderConfig *pDecoderConf = NULL;
/* 找到sps */
pNalu = Find264Nalu(pH264Data, DataSize, &NaluType, &NaluSize);
if ((NULL == pNalu) || (7 != NaluType) || (NaluSize < 8))
return -1;
pNalu += 4;
NaluSize -= 4;
/* 写AVCDecoderConf */
if (sizeof(*pDecoderConf) > BufSize)
return -1;
pDecoderConf = (T_AVCDecoderConfig *)pCur;
pDecoderConf->Version = 1;
pDecoderConf->ProfileIndication = pNalu[1];
pDecoderConf->ProfileCompatibility = pNalu[2];
pDecoderConf->AVCLevelIndication = pNalu[3];
pDecoderConf->rsv = 0x3f;
pDecoderConf->LengthSizeMinusOne = 3;
pCur += sizeof(*pDecoderConf);
BufSize -= sizeof(*pDecoderConf);
WRITE_U8 (pCur, BufSize, 0xe1);
WRITE_U16(pCur, BufSize, (u16)NaluSize);
WRITE_BUF(pCur, BufSize, pNalu, NaluSize);
/* 找到pps */
pNalu = Find264Nalu(pNalu + NaluSize, DataSize - (pNalu-pH264Data) - NaluSize, &NaluType, &NaluSize);
if (NULL == pNalu || 8 != NaluType)
return -1;
pNalu += 4;
NaluSize -= 4;
WRITE_U8 (pCur, BufSize, 1);
WRITE_U16(pCur, BufSize, (u16)NaluSize);
WRITE_BUF(pCur, BufSize, pNalu, NaluSize);
return pCur - pBuf;
}
/*
ScriptTagHeader
ScriptDataBody
Name
StringType
StringLen
String
Value
ObjectType
PropName
StringLen
String
PropData
Type
...
ObjectEnd
*/
static s32 GetScriptTag(T_FLVConfig *pConf, u8 *pBuf, u32 Size)
{
u8 *pCur = pBuf;
s32 HeaderSize;
u32 TagSize;
double Value;
u32 rst;
time_t Time;
struct tm Tm;
char strDate[30];
int DateLen;
HeaderSize = GetTagHeader(pCur, Size, FLV_TAG_TYPE_SCRIPT, 0);
if (0 > HeaderSize)
return -1;
pCur += HeaderSize;
Size -= HeaderSize;
/* 写ScriptTagBody */
WRITE_U8 (pCur, Size, FLV_SCRIPT_VALUE_TYPE_STRING); /* body name */
WRITE_STRING(pCur, Size, FLV_STRING_METADATA, FLV_STRING_METADATA_LEN);
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_OBJECT); /* body value */
/* video */
if (pConf->VideoFlag)
{
WRITE_STRING(pCur, Size, FLV_STRING_WIDTH, FLV_STRING_WIDTH_LEN); /* width */
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_NUM);
Value = (double)(pConf->Width);
WRITE_DOUBLE(pCur, Size, Value);
WRITE_STRING(pCur, Size, FLV_STRING_HEIGHT, FLV_STRING_HEIGHT_LEN); /* height */
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_NUM);
Value = (double)(pConf->Height);
WRITE_DOUBLE(pCur, Size, Value);
WRITE_STRING(pCur, Size, FLV_STRING_FRAMERATE, FLV_STRING_FRAMERATE_LEN); /* framerate */
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_NUM);
Value = (double)(pConf->Framerate);
WRITE_DOUBLE(pCur, Size, Value);
WRITE_STRING(pCur, Size, FLV_STRING_VCODECID, FLV_STRING_VCODECID_LEN); /* videocodecid */
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_NUM);
Value = (double)FLV_V_CODECID_AVC;
WRITE_DOUBLE(pCur, Size, Value);
}
/* audio */
if (pConf->AudioFlag)
{
WRITE_STRING(pCur, Size, FLV_STRING_ASAMPLERATE, FLV_STRING_ASAMPLERATE_LEN); /* audiosamplerate */
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_NUM);
Value = (double)(pConf->SampleRate);
WRITE_DOUBLE(pCur, Size, Value);
WRITE_STRING(pCur, Size, FLV_STRING_ASAMPLESIZE, FLV_STRING_ASAMPLESIZE_LEN); /* audiosamplesize */
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_NUM);
Value = (double)(16);//pConf->SampleSize);
WRITE_DOUBLE(pCur, Size, Value);
WRITE_STRING(pCur, Size, FLV_STRING_STEREO, FLV_STRING_STEREO_LEN); /* stereo */
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_BOOL);
WRITE_U8(pCur, Size, !!(pConf->Stereo));
WRITE_STRING(pCur, Size, FLV_STRING_ACODECID, FLV_STRING_ACODECID_LEN); /* audiocodecid */
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_NUM);
Value = (double)FLV_A_FORMATE_AAC;
WRITE_DOUBLE(pCur, Size, Value);
}
time(&Time);
localtime_r(&Time, &Tm);
if (119 <= Tm.tm_year)
{
DateLen = snprintf(strDate, 30, "%d-%02d-%02d %02d:%02d:%02d %s", Tm.tm_year + 1900, Tm.tm_mon + 1, Tm.tm_mday, Tm.tm_hour, Tm.tm_min, Tm.tm_sec, Tm.tm_zone);
WRITE_STRING(pCur, Size, FLV_STRING_DATE, FLV_STRING_DATE_LEN);
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_STRING);
WRITE_STRING(pCur, Size, strDate, DateLen);
}
WRITE_STRING(pCur, Size, FLV_STRING_AUTHOR, FLV_STRING_AUTHOR_LEN);
WRITE_U8(pCur, Size, FLV_SCRIPT_VALUE_TYPE_STRING);
WRITE_STRING(pCur, Size, "LLL", 3);
/* body end */
WRITE_U24(pCur, Size, 0x000009);
TagSize = (u32)(pCur - pBuf);
SetTagHeaderSize(pBuf, TagSize - HeaderSize);
WRITE_U32(pCur, Size, TagSize);
return TagSize + 4;
}
s32 FLV_Get264Tag_SPS(u8 *pBuf, u32 BufSize, const u8 *pH264Data, u32 DataSize)
{
u8 *pCur = pBuf;
u32 TagSize;
s32 HeaderSize;
s32 rst;
if (NULL == pBuf || NULL == pH264Data)
return -1;
/* 写TagHeader */
HeaderSize = GetTagHeader(pCur, BufSize, FLV_TAG_TYPE_VIDEO, 0);
if (0 > HeaderSize)
return -1;
pCur += HeaderSize;
BufSize -= HeaderSize;
/* 写VideoHeader */
rst = GetVideoHeader(pCur, BufSize, FLV_V_FRAME_TYPE_I, FLV_V_CODECID_AVC, FLV_AVCPACKET_TYPE_SPS);
if (0 > rst)
return -1;
pCur += rst;
BufSize -= rst;
/* 写AVCDecoderConfigurationRecord */
rst = GetAVCDecoderConfig(pCur, BufSize, pH264Data, DataSize);
if (0 > rst)
return -1;
pCur += rst;
BufSize -= rst;
TagSize = (u32)(pCur - pBuf);
SetTagHeaderSize(pBuf, TagSize - HeaderSize);
WRITE_U32(pCur, BufSize, TagSize);
return TagSize + 4;
}
s32 FLV_Get264Tag(u8 *pBuf, u32 BufSize, const u8 *pH264Data, u32 DataSize, u32 TimeStamp)
{
const u8 *pNalu;
u8 *pCur = pBuf;
u8 NaluType;
u32 NaluSize = 0;
u32 TagSize;
s32 HeaderSize;
s32 rst;
if (NULL == pBuf || NULL == pH264Data)
return -1;
/* 写TagHeader */
HeaderSize = GetTagHeader(pCur, BufSize, FLV_TAG_TYPE_VIDEO, TimeStamp);
if (0 > HeaderSize)
return -1;
pCur += HeaderSize;
BufSize -= HeaderSize;
/* 找到I帧或P帧 找到一个就退出 */
pNalu = pH264Data;
while (1)
{
pNalu = Find264Nalu(pNalu + NaluSize, DataSize - (pNalu-pH264Data) - NaluSize, &NaluType, &NaluSize);
if (NULL == pNalu)
return -1;
if ((1 == NaluType) || (5 == NaluType))
break;
}
pNalu += 4;
NaluSize -= 4;
NaluType = (1 == NaluType)? FLV_V_FRAME_TYPE_P: FLV_V_FRAME_TYPE_I;
/* 写VideoHeader */
rst = GetVideoHeader(pCur, BufSize, NaluType, FLV_V_CODECID_AVC, FLV_AVCPACKET_TYPE_NALU);
if (0 > rst)
return -1;
pCur += rst;
BufSize -= rst;
/* 写264帧 */
WRITE_U32(pCur, BufSize, NaluSize);
WRITE_BUF(pCur, BufSize, pNalu, NaluSize);
TagSize = pCur - pBuf;
SetTagHeaderSize(pBuf, TagSize - HeaderSize);
WRITE_U32(pCur, BufSize, TagSize);
return TagSize + 4;
}
// 默认AAC
static s32 GetAudioHeader(u8 *pBuf, u32 Size, u8 AACPacketType)
{
T_AudioHeader *pAudioHeader;
T_AACPacketHeader *pAACHeader;
if (sizeof(*pAudioHeader) > Size)
return -1;
pAudioHeader = (T_AudioHeader *)pBuf;
pAudioHeader->SoundFormat = FLV_A_FORMATE_AAC;
pAudioHeader->SoundRate = FLV_A_SAMPLE_RATE_44K; /* AAC时固定为44K */
pAudioHeader->SoundSize = FLV_A_SAMPLE_SIZE_16b; /* AAC时固定为16b */
pAudioHeader->SoundType = FLV_A_SOUND_TYPE_STEREO; /* AAC时固定为stereo */
pBuf += sizeof(*pAudioHeader);
Size -= sizeof(*pAudioHeader);
/* 写AACPacketHeader */
if (sizeof(*pAACHeader) > Size)
return -1;
pAACHeader = (T_AACPacketHeader *)pBuf;
pAACHeader->AACPacketType = AACPacketType;
return sizeof(*pAudioHeader) + sizeof(*pAACHeader);
}
static s32 GetAACTag_First(T_FLVConfig *pConf, u8 *pBuf, u32 Size)
{
u8 *pCur = pBuf;
s32 HeaderSize;
s32 rst;
u32 TagSize;
if (NULL == pConf || NULL == pBuf)
return -1;
/* 写TagHeader */
HeaderSize = GetTagHeader(pCur, Size, FLV_TAG_TYPE_AUDIO, 0);
if (0 > HeaderSize)
return -1;
pCur += HeaderSize;
Size -= HeaderSize;
/* 写AudioHeader */
rst = GetAudioHeader(pCur, Size, FLV_AACPACKET_TYPE_HEADER);
if (0 > rst)
return -1;
pCur += rst;
Size -= rst;
/* 写SpecificConfig */
rst = GetAudioSpecificConfig(pCur, Size, pConf->AudioType, pConf->SampleRate, pConf->Channel);
if (0 > rst)
return -1;
pCur += rst;
Size -= rst;
TagSize = (u32)(pCur - pBuf);
SetTagHeaderSize(pBuf, TagSize - HeaderSize);
WRITE_U32(pCur, Size, TagSize);
return TagSize + 4;
}
s32 FLV_GetAACTag(u8 *pBuf, u32 BufSize, const u8 *pAACData, u32 DataSize, u32 TimeStamp)
{
u8 *pCur = pBuf;
s32 HeaderSize;
s32 rst;
u32 TagSize;
if (NULL == pBuf || NULL == pAACData)
return -1;
/* 写TagHeader */
HeaderSize = GetTagHeader(pCur, BufSize, FLV_TAG_TYPE_AUDIO, TimeStamp);
if (0 > HeaderSize)
return -1;
pCur += HeaderSize;
BufSize -= HeaderSize;
/* 写AudioHeader */
rst = GetAudioHeader(pCur, BufSize, FLV_AACPACKET_TYPE_RAW);
if (0 > rst)
return -1;
pCur += rst;
BufSize -= rst;
/* 写AAC data */
WRITE_BUF(pCur, BufSize, pAACData, DataSize);
TagSize = (u32)(pCur - pBuf);
SetTagHeaderSize(pBuf, TagSize - HeaderSize);
WRITE_U32(pCur, BufSize, TagSize);
return TagSize + 4;
}
s32 FLV_GetStreamHeader(T_FLVConfig *pConf, u8 *pBuf, u32 Size)
{
u8 *pCur = pBuf;
s32 rst;
if (NULL == pConf || NULL == pBuf)
return -1;
if ((0 == pConf->VideoFlag) && (0 == pConf->AudioFlag))
return -1;
/* 写FileHeader */
rst = GetFileHeader(pConf, pCur, Size);