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for #738, demux the aac mp4a and esds

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winlin 2017-02-02 19:05:08 +08:00
parent 128a1fd3db
commit 96f2e18d3a
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153
trunk/src/kernel/srs_kernel_mp4.hpp
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@ -724,6 +724,159 @@ protected:
virtual int decode_header(SrsBuffer* buf);
};
// 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,
};
/**
* 7.2.2.2 BaseDescriptor
* ISO_IEC_14496-1-System-2010.pdf, page 32
*/
class SrsMp4BaseDescriptor : public ISrsCodec
{
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)
public:
SrsMp4BaseDescriptor();
virtual ~SrsMp4BaseDescriptor();
// 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 int encode_payload(SrsBuffer* buf) = 0;
virtual int decode_payload(SrsBuffer* buf) = 0;
};
/**
* 7.2.6.6 DecoderConfigDescriptor
* ISO_IEC_14496-1-System-2010.pdf, page 48
*/
class SrsMp4DecoderConfigDescriptor : public SrsMp4BaseDescriptor
{
public:
uint8_t objectTypeIndication;
uint8_t streamType; // bit(6)
uint8_t upStream; // bit(1)
uint8_t reserved; // bit(1)
uint32_t bufferSizeDB; // bit(24)
uint32_t maxBitrate;
uint32_t avgBitrate;
public:
SrsMp4DecoderConfigDescriptor();
virtual ~SrsMp4DecoderConfigDescriptor();
protected:
virtual uint32_t nb_payload();
virtual int encode_payload(SrsBuffer* buf);
virtual int decode_payload(SrsBuffer* buf);
};
/**
* 7.3.2.3 SL Packet Header Configuration
* ISO_IEC_14496-1-System-2010.pdf, page 92
*/
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 int encode_payload(SrsBuffer* buf);
virtual int decode_payload(SrsBuffer* buf);
};
/**
* 7.2.6.5 ES_Descriptor
* ISO_IEC_14496-1-System-2010.pdf, page 47
*/
class SrsMp4ES_Descriptor : public SrsMp4BaseDescriptor
{
public:
uint16_t ES_ID;
uint8_t streamDependenceFlag; // bit(1)
uint8_t URL_Flag; // bit(1)
uint8_t OCRstreamFlag; // bit(1)
uint8_t streamPriority; // bit(5)
// if (streamDependenceFlag)
uint16_t dependsOn_ES_ID;
// if (URL_Flag)
uint8_t URLlength;
uint8_t* URLstring;
// if (OCRstreamFlag)
uint16_t OCR_ES_Id;
SrsMp4DecoderConfigDescriptor decConfigDescr;
SrsMp4SLConfigDescriptor slConfigDescr;
public:
SrsMp4ES_Descriptor();
virtual ~SrsMp4ES_Descriptor();
protected:
virtual uint32_t nb_payload();
virtual int encode_payload(SrsBuffer* buf);
virtual int decode_payload(SrsBuffer* buf);
};
/**
* 5.6 Sample Description Boxes
* Elementary Stream Descriptors (esds)
* ISO_IEC_14496-14-MP4-2003.pdf, page 15
* @see http://www.mp4ra.org/codecs.html
*/
class SrsMp4EsdsBox : public SrsMp4FullBox
{
public:
SrsMp4ES_Descriptor* es;
public:
SrsMp4EsdsBox();
virtual ~SrsMp4EsdsBox();
protected:
virtual int nb_header();
virtual int encode_header(SrsBuffer* buf);
virtual int decode_header(SrsBuffer* buf);
};
/**
* 8.5.2 Sample Description Box (stsd), for Audio/Video.
* ISO_IEC_14496-12-base-format-2012.pdf, page 40