mirror of
https://github.com/ossrs/srs.git
synced 2025-03-09 15:49:59 +00:00
for #738, parse mp4 moov boxes.
This commit is contained in:
winlin
parent
96f2e18d3a
commit
ffe0a4426d
3 changed files with 368 additions and 187 deletions
|
|
@ -37,6 +37,67 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|||
class ISrsReader;
|
||||
class SrsSimpleStream;
|
||||
|
||||
/**
|
||||
* 4.2 Object Structure
|
||||
* ISO_IEC_14496-12-base-format-2012.pdf, page 16
|
||||
*/
|
||||
enum SrsMp4BoxType
|
||||
{
|
||||
SrsMp4BoxTypeForbidden = 0x00,
|
||||
|
||||
SrsMp4BoxTypeUUID = 0x75756964, // 'uuid'
|
||||
SrsMp4BoxTypeFTYP = 0x66747970, // 'ftyp'
|
||||
SrsMp4BoxTypeMDAT = 0x6d646174, // 'mdat'
|
||||
SrsMp4BoxTypeFREE = 0x66726565, // 'free'
|
||||
SrsMp4BoxTypeSKIP = 0x736b6970, // 'skip'
|
||||
SrsMp4BoxTypeMOOV = 0x6d6f6f76, // 'moov'
|
||||
SrsMp4BoxTypeMVHD = 0x6d766864, // 'mvhd'
|
||||
SrsMp4BoxTypeTRAK = 0x7472616b, // 'trak'
|
||||
SrsMp4BoxTypeTKHD = 0x746b6864, // 'tkhd'
|
||||
SrsMp4BoxTypeEDTS = 0x65647473, // 'edts'
|
||||
SrsMp4BoxTypeELST = 0x656c7374, // 'elst'
|
||||
SrsMp4BoxTypeMDIA = 0x6d646961, // 'mdia'
|
||||
SrsMp4BoxTypeMDHD = 0x6d646864, // 'mdhd'
|
||||
SrsMp4BoxTypeHDLR = 0x68646c72, // 'hdlr'
|
||||
SrsMp4BoxTypeMINF = 0x6d696e66, // 'minf'
|
||||
SrsMp4BoxTypeVMHD = 0x766d6864, // 'vmhd'
|
||||
SrsMp4BoxTypeSMHD = 0x736d6864, // 'smhd'
|
||||
SrsMp4BoxTypeDINF = 0x64696e66, // 'dinf'
|
||||
SrsMp4BoxTypeURL = 0x75726c20, // 'url '
|
||||
SrsMp4BoxTypeURN = 0x75726e20, // 'urn '
|
||||
SrsMp4BoxTypeDREF = 0x64726566, // 'dref'
|
||||
SrsMp4BoxTypeSTBL = 0x7374626c, // 'stbl'
|
||||
SrsMp4BoxTypeSTSD = 0x73747364, // 'stsd'
|
||||
SrsMp4BoxTypeSTTS = 0x73747473, // 'stts'
|
||||
SrsMp4BoxTypeCTTS = 0x63747473, // 'ctts'
|
||||
SrsMp4BoxTypeSTSS = 0x73747373, // 'stss'
|
||||
SrsMp4BoxTypeSTSC = 0x73747363, // 'stsc'
|
||||
SrsMp4BoxTypeSTCO = 0x7374636f, // 'stco'
|
||||
SrsMp4BoxTypeCO64 = 0x636f3634, // 'co64'
|
||||
SrsMp4BoxTypeSTSZ = 0x7374737a, // 'stsz'
|
||||
SrsMp4BoxTypeSTZ2 = 0x73747a32, // 'stz2'
|
||||
SrsMp4BoxTypeAVC1 = 0x61766331, // 'avc1'
|
||||
SrsMp4BoxTypeAVCC = 0x61766343, // 'avcC'
|
||||
SrsMp4BoxTypeMP4A = 0x6d703461, // 'mp4a'
|
||||
SrsMp4BoxTypeESDS = 0x65736473, // 'esds'
|
||||
|
||||
SrsMp4BoxTypeVIDE = 0x76696465, // 'vide'
|
||||
SrsMp4BoxTypeSOUN = 0x736f756e, // 'soun'
|
||||
};
|
||||
|
||||
/**
|
||||
* File format brands
|
||||
* ISO_IEC_14496-12-base-format-2012.pdf, page 166
|
||||
*/
|
||||
enum SrsMp4BoxBrand
|
||||
{
|
||||
SrsMp4BoxBrandForbidden = 0x00,
|
||||
SrsMp4BoxBrandISOM = 0x69736f6d, // 'isom'
|
||||
SrsMp4BoxBrandISO2 = 0x69736f32, // 'iso2'
|
||||
SrsMp4BoxBrandAVC1 = 0x61766331, // 'avc1'
|
||||
SrsMp4BoxBrandMP41 = 0x6d703431, // 'mp41'
|
||||
};
|
||||
|
||||
/**
|
||||
* 4.2 Object Structure
|
||||
* ISO_IEC_14496-12-base-format-2012.pdf, page 16
|
||||
|
|
@ -56,7 +117,7 @@ public:
|
|||
// identifies the box type; standard boxes use a compact type, which is normally four printable
|
||||
// characters, to permit ease of identification, and is shown so in the boxes below. User extensions use
|
||||
// an extended type; in this case, the type field is set to ‘uuid’.
|
||||
uint32_t type;
|
||||
SrsMp4BoxType type;
|
||||
// For box 'uuid'.
|
||||
uint8_t* usertype;
|
||||
private:
|
||||
|
|
@ -133,13 +194,13 @@ class SrsMp4FileTypeBox : public SrsMp4Box
|
|||
{
|
||||
public:
|
||||
// a brand identifier
|
||||
uint32_t major_brand;
|
||||
SrsMp4BoxBrand major_brand;
|
||||
// an informative integer for the minor version of the major brand
|
||||
uint32_t minor_version;
|
||||
private:
|
||||
// a list, to the end of the box, of brands
|
||||
int nb_compatible_brands;
|
||||
uint32_t* compatible_brands;
|
||||
SrsMp4BoxBrand* compatible_brands;
|
||||
public:
|
||||
SrsMp4FileTypeBox();
|
||||
virtual ~SrsMp4FileTypeBox();
|
||||
|
|
@ -726,15 +787,15 @@ protected:
|
|||
|
||||
// Table 1 — List of Class Tags for Descriptors
|
||||
// ISO_IEC_14496-1-System-2010.pdf, page 31
|
||||
enum SRS_MP4_ES_TAG_ES {
|
||||
SRS_MP4_ES_TAG_ES_forbidden = 0x00,
|
||||
SRS_MP4_ES_TAG_ES_ObjectDescrTag = 0x01,
|
||||
SRS_MP4_ES_TAG_ES_InitialObjectDescrTag = 0x02,
|
||||
SRS_MP4_ES_TAG_ES_DescrTag = 0x03,
|
||||
SRS_MP4_ES_TAG_ES_DecoderConfigDescrTag = 0x04,
|
||||
SRS_MP4_ES_TAG_ES_DecSpecificInfoTag = 0x05,
|
||||
SRS_MP4_ES_TAG_ES_SLConfigDescrTag = 0x06,
|
||||
SRS_MP4_ES_TAG_ES_ExtSLConfigDescrTag = 0x064,
|
||||
enum SrsMp4ESTagEs {
|
||||
SrsMp4ESTagESforbidden = 0x00,
|
||||
SrsMp4ESTagESObjectDescrTag = 0x01,
|
||||
SrsMp4ESTagESInitialObjectDescrTag = 0x02,
|
||||
SrsMp4ESTagESDescrTag = 0x03,
|
||||
SrsMp4ESTagESDecoderConfigDescrTag = 0x04,
|
||||
SrsMp4ESTagESDecSpecificInfoTag = 0x05,
|
||||
SrsMp4ESTagESSLConfigDescrTag = 0x06,
|
||||
SrsMp4ESTagESExtSLConfigDescrTag = 0x064,
|
||||
};
|
||||
|
||||
/**
|
||||
|
|
@ -747,21 +808,66 @@ public:
|
|||
// The values of the class tags are
|
||||
// defined in Table 2. As an expandable class the size of each class instance in bytes is encoded and accessible
|
||||
// through the instance variable sizeOfInstance (see 8.3.3).
|
||||
SRS_MP4_ES_TAG_ES tag; // bit(8)
|
||||
SrsMp4ESTagEs tag; // bit(8)
|
||||
// The decoded or encoded variant length.
|
||||
int32_t vlen; // bit(28)
|
||||
private:
|
||||
// The position at buffer to start demux the box.
|
||||
int start_pos;
|
||||
public:
|
||||
SrsMp4BaseDescriptor();
|
||||
virtual ~SrsMp4BaseDescriptor();
|
||||
public:
|
||||
// Get the left space of box, for decoder.
|
||||
virtual int left_space(SrsBuffer* buf);
|
||||
// Interface ISrsCodec
|
||||
public:
|
||||
virtual int nb_bytes();
|
||||
virtual int encode(SrsBuffer* buf);
|
||||
virtual int decode(SrsBuffer* buf);
|
||||
protected:
|
||||
virtual uint32_t nb_payload() = 0;
|
||||
virtual int32_t nb_payload() = 0;
|
||||
virtual int encode_payload(SrsBuffer* buf) = 0;
|
||||
virtual int decode_payload(SrsBuffer* buf) = 0;
|
||||
};
|
||||
|
||||
// Table 5 — objectTypeIndication Values
|
||||
// ISO_IEC_14496-1-System-2010.pdf, page 49
|
||||
enum SrsMp4ObjectType
|
||||
{
|
||||
SrsMp4ObjectTypeForbidden = 0x00,
|
||||
// Audio ISO/IEC 14496-3
|
||||
SrsMp4ObjectTypeAac = 0x40,
|
||||
};
|
||||
|
||||
// Table 6 — streamType Values
|
||||
// ISO_IEC_14496-1-System-2010.pdf, page 51
|
||||
enum SrsMp4StreamType
|
||||
{
|
||||
SrsMp4StreamTypeForbidden = 0x00,
|
||||
SrsMp4StreamTypeAudioStream = 0x05,
|
||||
};
|
||||
|
||||
/**
|
||||
* 7.2.6.7 DecoderSpecificInfo
|
||||
* ISO_IEC_14496-1-System-2010.pdf, page 51
|
||||
*/
|
||||
class SrsMp4DecoderSpecificInfo : public SrsMp4BaseDescriptor
|
||||
{
|
||||
public:
|
||||
// AAC Audio Specific Config.
|
||||
// 1.6.2.1 AudioSpecificConfig, in ISO_IEC_14496-3-AAC-2001.pdf, page 33.
|
||||
int nb_asc;
|
||||
uint8_t* asc;
|
||||
public:
|
||||
SrsMp4DecoderSpecificInfo();
|
||||
virtual ~SrsMp4DecoderSpecificInfo();
|
||||
protected:
|
||||
virtual int32_t nb_payload();
|
||||
virtual int encode_payload(SrsBuffer* buf);
|
||||
virtual int decode_payload(SrsBuffer* buf);
|
||||
};
|
||||
|
||||
/**
|
||||
* 7.2.6.6 DecoderConfigDescriptor
|
||||
* ISO_IEC_14496-1-System-2010.pdf, page 48
|
||||
|
|
@ -769,18 +875,21 @@ protected:
|
|||
class SrsMp4DecoderConfigDescriptor : public SrsMp4BaseDescriptor
|
||||
{
|
||||
public:
|
||||
uint8_t objectTypeIndication;
|
||||
uint8_t streamType; // bit(6)
|
||||
// an indication of the object or scene description type that needs to be supported
|
||||
// by the decoder for this elementary stream as per Table 5.
|
||||
SrsMp4ObjectType objectTypeIndication;
|
||||
SrsMp4StreamType streamType; // bit(6)
|
||||
uint8_t upStream; // bit(1)
|
||||
uint8_t reserved; // bit(1)
|
||||
uint32_t bufferSizeDB; // bit(24)
|
||||
uint32_t maxBitrate;
|
||||
uint32_t avgBitrate;
|
||||
SrsMp4DecoderSpecificInfo* decSpecificInfo; // optional.
|
||||
public:
|
||||
SrsMp4DecoderConfigDescriptor();
|
||||
virtual ~SrsMp4DecoderConfigDescriptor();
|
||||
protected:
|
||||
virtual uint32_t nb_payload();
|
||||
virtual int32_t nb_payload();
|
||||
virtual int encode_payload(SrsBuffer* buf);
|
||||
virtual int decode_payload(SrsBuffer* buf);
|
||||
};
|
||||
|
|
@ -793,37 +902,11 @@ class SrsMp4SLConfigDescriptor : public SrsMp4BaseDescriptor
|
|||
{
|
||||
public:
|
||||
uint8_t predefined;
|
||||
// if (predefined==0)
|
||||
uint8_t useAccessUnitStartFlag; // bit(1)
|
||||
uint8_t useAccessUnitEndFlag; // bit(1)
|
||||
uint8_t useRandomAccessPointFlag; // bit(1)
|
||||
uint8_t hasRandomAccessUnitsOnlyFlag; // bit(1)
|
||||
uint8_t usePaddingFlag; // bit(1)
|
||||
uint8_t useTimeStampsFlag; // bit(1)
|
||||
uint8_t useIdleFlag; // bit(1)
|
||||
uint8_t durationFlag; // bit(1)
|
||||
uint32_t timeStampResolution;
|
||||
uint32_t OCRResolution;
|
||||
uint8_t timeStampLength; // must be ≤ 64
|
||||
uint8_t OCRLength; // must be ≤ 64
|
||||
uint8_t AU_Length; // must be ≤ 32
|
||||
uint8_t instantBitrateLength;
|
||||
uint8_t degradationPriorityLength; // bit(4)
|
||||
uint8_t AU_seqNumLength; // bit(5) // must be ≤ 16
|
||||
uint8_t packetSeqNumLength; // bit(5) // must be ≤ 16
|
||||
uint8_t reserved; // bit(2) // 0b11
|
||||
// if (durationFlag)
|
||||
uint32_t timeScale;
|
||||
uint16_t accessUnitDuration;
|
||||
uint16_t compositionUnitDuration;
|
||||
// if (!useTimeStampsFlag)
|
||||
uint64_t startDecodingTimeStamp; // bit(timeStampLength)
|
||||
uint64_t startCompositionTimeStamp; // bit(timeStampLength)
|
||||
public:
|
||||
SrsMp4SLConfigDescriptor();
|
||||
virtual ~SrsMp4SLConfigDescriptor();
|
||||
protected:
|
||||
virtual uint32_t nb_payload();
|
||||
virtual int32_t nb_payload();
|
||||
virtual int encode_payload(SrsBuffer* buf);
|
||||
virtual int decode_payload(SrsBuffer* buf);
|
||||
};
|
||||
|
|
@ -853,7 +936,7 @@ public:
|
|||
SrsMp4ES_Descriptor();
|
||||
virtual ~SrsMp4ES_Descriptor();
|
||||
protected:
|
||||
virtual uint32_t nb_payload();
|
||||
virtual int32_t nb_payload();
|
||||
virtual int encode_payload(SrsBuffer* buf);
|
||||
virtual int decode_payload(SrsBuffer* buf);
|
||||
};
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue