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for #738, decode mp4 video track boxes.

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This commit is contained in:
winlin 2017-02-02 15:10:11 +08:00
parent 5a84b6ca94
commit 128a1fd3db
4 changed files with 301 additions and 118 deletions
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48
trunk/src/kernel/srs_kernel_mp4.hpp
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@ -72,6 +72,10 @@ public:
virtual uint64_t sz();
// Get the left space of box, for decoder.
virtual int left_space(SrsBuffer* buf);
// Box type helper.
virtual bool is_ftyp();
virtual bool is_moov();
virtual bool is_mdat();
/**
* Discovery the box from buffer.
* @param ppbox Output the discoveried box, which user must free it.
@ -353,10 +357,6 @@ public:
int16_t media_rate_fraction;
public:
SrsMp4ElstEntry();
public:
virtual int nb_header(uint32_t version);
virtual int encode_header(SrsBuffer* buf, uint32_t version);
virtual int decode_header(SrsBuffer* buf, uint32_t version);
};
/**
@ -463,6 +463,9 @@ public:
public:
SrsMp4HandlerReferenceBox();
virtual ~SrsMp4HandlerReferenceBox();
public:
virtual bool is_video();
virtual bool is_audio();
protected:
virtual int nb_header();
virtual int encode_header(SrsBuffer* buf);
@ -542,6 +545,8 @@ public:
/**
* 8.7.2 Data Reference Box
* ISO_IEC_14496-12-base-format-2012.pdf, page 56
* a 24-bit integer with flags; one flag is defined (x000001) which means that the media
* data is in the same file as the Movie Box containing this data reference.
*/
class SrsMp4DataEntryBox : public SrsMp4FullBox
{
@ -550,10 +555,6 @@ public:
public:
SrsMp4DataEntryBox();
virtual ~SrsMp4DataEntryBox();
protected:
virtual int nb_header();
virtual int encode_header(SrsBuffer* buf);
virtual int decode_header(SrsBuffer* buf);
};
/**
@ -565,6 +566,10 @@ class SrsMp4DataEntryUrlBox : public SrsMp4DataEntryBox
public:
SrsMp4DataEntryUrlBox();
virtual ~SrsMp4DataEntryUrlBox();
protected:
virtual int nb_header();
virtual int encode_header(SrsBuffer* buf);
virtual int decode_header(SrsBuffer* buf);
};
/**
@ -679,6 +684,24 @@ protected:
virtual int decode_header(SrsBuffer* buf);
};
/**
* 5.3.4 AVC Video Stream Definition (avcC)
* ISO_IEC_14496-15-AVC-format-2012.pdf, page 19
*/
class SrsMp4AvccBox : public SrsMp4Box
{
public:
int nb_config;
uint8_t* avc_config;
public:
SrsMp4AvccBox();
virtual ~SrsMp4AvccBox();
protected:
virtual int nb_header();
virtual int encode_header(SrsBuffer* buf);
virtual int decode_header(SrsBuffer* buf);
};
/**
* 8.5.2 Sample Description Box (mp4a)
* ISO_IEC_14496-12-base-format-2012.pdf, page 45
@ -957,8 +980,8 @@ private:
// The stream used to demux the boxes.
// TODO: FIXME: refine for performance issue.
SrsSimpleStream* stream;
// Always load next box.
SrsMp4Box* next;
// The temporary buffer to read from buffer.
char* buf;
public:
SrsMp4Decoder();
virtual ~SrsMp4Decoder();
@ -970,7 +993,10 @@ public:
*/
virtual int initialize(ISrsReader* r);
private:
virtual int load_next_box(SrsMp4Box** ppbox);
// Load the next box from reader.
// @param required_box_type The box type required, 0 for any box.
virtual int load_next_box(SrsMp4Box** ppbox, uint32_t required_box_type);
virtual int do_load_next_box(SrsMp4Box** ppbox, uint32_t required_box_type);
};
#endif