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gstreamer/gst-libs/gst/codecparsers/gstvc1parser.h
Aaron Boxer 6d3429af34 documentation: fixed a heap o' typos
2019-11-05 09:11:25 -05:00

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/* Gstreamer
* Copyright (C) <2011> Intel
* Copyright (C) <2011> Collabora Ltd.
* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_VC1_PARSER_H__
#define __GST_VC1_PARSER_H__
#ifndef GST_USE_UNSTABLE_API
#warning "The VC1 parsing library is unstable API and may change in future."
#warning "You can define GST_USE_UNSTABLE_API to avoid this warning."
#endif
#include <gst/gst.h>
#include <gst/codecparsers/codecparsers-prelude.h>
G_BEGIN_DECLS
#define MAX_HRD_NUM_LEAKY_BUCKETS 31
/**
* GST_VC1_BFRACTION_BASIS:
* The @bfraction variable should be divided
* by this constant to have the actual value.
*/
#define GST_VC1_BFRACTION_BASIS 840
#define GST_VC1_BFRACTION_RESERVED (GST_VC1_BFRACTION_BASIS + 1)
#define GST_VC1_BFRACTION_PTYPE_BI (GST_VC1_BFRACTION_BASIS + 2)
typedef enum {
GST_VC1_END_OF_SEQ = 0x0A,
GST_VC1_SLICE = 0x0B,
GST_VC1_FIELD = 0x0C,
GST_VC1_FRAME = 0x0D,
GST_VC1_ENTRYPOINT = 0x0E,
GST_VC1_SEQUENCE = 0x0F,
GST_VC1_SLICE_USER = 0x1B,
GST_VC1_FIELD_USER = 0x1C,
GST_VC1_FRAME_USER = 0x1D,
GST_VC1_ENTRY_POINT_USER = 0x1E,
GST_VC1_SEQUENCE_USER = 0x1F
} GstVC1StartCode;
typedef enum {
GST_VC1_PROFILE_SIMPLE,
GST_VC1_PROFILE_MAIN,
GST_VC1_PROFILE_RESERVED,
GST_VC1_PROFILE_ADVANCED
} GstVC1Profile;
typedef enum {
GST_VC1_PARSER_OK,
GST_VC1_PARSER_BROKEN_DATA,
GST_VC1_PARSER_NO_BDU,
GST_VC1_PARSER_NO_BDU_END,
GST_VC1_PARSER_ERROR,
} GstVC1ParserResult;
typedef enum
{
GST_VC1_PICTURE_TYPE_P,
GST_VC1_PICTURE_TYPE_B,
GST_VC1_PICTURE_TYPE_I,
GST_VC1_PICTURE_TYPE_BI,
GST_VC1_PICTURE_TYPE_SKIPPED
} GstVC1PictureType;
typedef enum
{
GST_VC1_LEVEL_LOW = 0, /* Simple/Main profile low level */
GST_VC1_LEVEL_MEDIUM = 2, /* Simple/Main profile medium level */
GST_VC1_LEVEL_HIGH = 4, /* Main profile high level */
GST_VC1_LEVEL_L0 = 0, /* Advanced profile level 0 */
GST_VC1_LEVEL_L1 = 1, /* Advanced profile level 1 */
GST_VC1_LEVEL_L2 = 2, /* Advanced profile level 2 */
GST_VC1_LEVEL_L3 = 3, /* Advanced profile level 3 */
GST_VC1_LEVEL_L4 = 4, /* Advanced profile level 4 */
/* 5 to 7 reserved */
GST_VC1_LEVEL_UNKNOWN = 255 /* Unknown profile */
} GstVC1Level;
typedef enum
{
GST_VC1_QUANTIZER_IMPLICITLY,
GST_VC1_QUANTIZER_EXPLICITLY,
GST_VC1_QUANTIZER_NON_UNIFORM,
GST_VC1_QUANTIZER_UNIFORM
} GstVC1QuantizerSpec;
typedef enum {
GST_VC1_DQPROFILE_FOUR_EDGES,
GST_VC1_DQPROFILE_DOUBLE_EDGES,
GST_VC1_DQPROFILE_SINGLE_EDGE,
GST_VC1_DQPROFILE_ALL_MBS
} GstVC1DQProfile;
typedef enum {
GST_VC1_CONDOVER_NONE,
GST_VC1_CONDOVER_ALL,
GST_VC1_CONDOVER_SELECT
} GstVC1Condover;
/**
* GstVC1MvMode:
*
*/
typedef enum
{
GST_VC1_MVMODE_1MV_HPEL_BILINEAR,
GST_VC1_MVMODE_1MV,
GST_VC1_MVMODE_1MV_HPEL,
GST_VC1_MVMODE_MIXED_MV,
GST_VC1_MVMODE_INTENSITY_COMP
} GstVC1MvMode;
typedef enum
{
GST_VC1_FRAME_PROGRESSIVE = 0x0,
GST_VC1_FRAME_INTERLACE = 0x10,
GST_VC1_FIELD_INTERLACE = 0x11
} GstVC1FrameCodingMode;
typedef struct _GstVC1SeqHdr GstVC1SeqHdr;
typedef struct _GstVC1AdvancedSeqHdr GstVC1AdvancedSeqHdr;
typedef struct _GstVC1HrdParam GstVC1HrdParam;
typedef struct _GstVC1EntryPointHdr GstVC1EntryPointHdr;
typedef struct _GstVC1SeqLayer GstVC1SeqLayer;
typedef struct _GstVC1SeqStructA GstVC1SeqStructA;
typedef struct _GstVC1SeqStructB GstVC1SeqStructB;
typedef struct _GstVC1SeqStructC GstVC1SeqStructC;
/* Pictures Structures */
typedef struct _GstVC1FrameLayer GstVC1FrameLayer;
typedef struct _GstVC1FrameHdr GstVC1FrameHdr;
typedef struct _GstVC1PicAdvanced GstVC1PicAdvanced;
typedef struct _GstVC1PicSimpleMain GstVC1PicSimpleMain;
typedef struct _GstVC1Picture GstVC1Picture;
typedef struct _GstVC1SliceHdr GstVC1SliceHdr;
typedef struct _GstVC1VopDquant GstVC1VopDquant;
typedef struct _GstVC1BitPlanes GstVC1BitPlanes;
typedef struct _GstVC1BDU GstVC1BDU;
struct _GstVC1HrdParam
{
guint8 hrd_num_leaky_buckets;
guint8 bit_rate_exponent;
guint8 buffer_size_exponent;
guint16 hrd_rate[MAX_HRD_NUM_LEAKY_BUCKETS];
guint16 hrd_buffer[MAX_HRD_NUM_LEAKY_BUCKETS];
};
/**
* GstVC1EntryPointHdr:
*
* Structure for entrypoint header, this will be used only in advanced profiles
*/
struct _GstVC1EntryPointHdr
{
guint8 broken_link;
guint8 closed_entry;
guint8 panscan_flag;
guint8 refdist_flag;
guint8 loopfilter;
guint8 fastuvmc;
guint8 extended_mv;
guint8 dquant;
guint8 vstransform;
guint8 overlap;
guint8 quantizer;
guint8 coded_size_flag;
guint16 coded_width;
guint16 coded_height;
guint8 extended_dmv;
guint8 range_mapy_flag;
guint8 range_mapy;
guint8 range_mapuv_flag;
guint8 range_mapuv;
guint8 hrd_full[MAX_HRD_NUM_LEAKY_BUCKETS];
};
/**
* GstVC1AdvancedSeqHdr:
*
* Structure for the advanced profile sequence headers specific parameters.
*/
struct _GstVC1AdvancedSeqHdr
{
GstVC1Level level;
guint8 frmrtq_postproc;
guint8 bitrtq_postproc;
guint8 postprocflag;
guint16 max_coded_width;
guint16 max_coded_height;
guint8 pulldown;
guint8 interlace;
guint8 tfcntrflag;
guint8 finterpflag;
guint8 psf;
guint8 display_ext;
guint16 disp_horiz_size;
guint16 disp_vert_size;
guint8 aspect_ratio_flag;
guint8 aspect_ratio;
guint8 aspect_horiz_size;
guint8 aspect_vert_size;
guint8 framerate_flag;
guint8 framerateind;
guint8 frameratenr;
guint8 frameratedr;
guint16 framerateexp;
guint8 color_format_flag;
guint8 color_prim;
guint8 transfer_char;
guint8 matrix_coef;
guint8 hrd_param_flag;
guint8 colordiff_format;
GstVC1HrdParam hrd_param;
/* computed */
guint framerate; /* Around in fps, 0 if unknown*/
guint bitrate; /* Around in kpbs, 0 if unknown*/
guint par_n;
guint par_d;
guint fps_n;
guint fps_d;
/* The last parsed entry point */
GstVC1EntryPointHdr entrypoint;
};
struct _GstVC1SeqStructA
{
guint32 vert_size;
guint32 horiz_size;
};
struct _GstVC1SeqStructB
{
GstVC1Level level;
guint8 cbr;
guint32 framerate;
/* In simple and main profiles only */
guint32 hrd_buffer;
guint32 hrd_rate;
};
struct _GstVC1SeqStructC
{
GstVC1Profile profile;
/* Only in simple and main profiles */
guint8 frmrtq_postproc;
guint8 bitrtq_postproc;
guint8 res_sprite;
guint8 loop_filter;
guint8 multires;
guint8 fastuvmc;
guint8 extended_mv;
guint8 dquant;
guint8 vstransform;
guint8 overlap;
guint8 syncmarker;
guint8 rangered;
guint8 maxbframes;
guint8 quantizer;
guint8 finterpflag;
/* Computed */
guint framerate; /* Around in fps, 0 if unknown*/
guint bitrate; /* Around in kpbs, 0 if unknown*/
/* This should be filled by user if previously known */
guint16 coded_width;
/* This should be filled by user if previously known */
guint16 coded_height;
/* Wmvp specific */
guint8 wmvp; /* Specify if the stream is wmp or not */
/* In the wmvp case, the framerate is not computed but in the bitstream */
guint8 slice_code;
};
struct _GstVC1SeqLayer
{
guint32 numframes;
GstVC1SeqStructA struct_a;
GstVC1SeqStructB struct_b;
GstVC1SeqStructC struct_c;
};
/**
* GstVC1SeqHdr:
*
* Structure for sequence headers in any profile.
*/
struct _GstVC1SeqHdr
{
GstVC1Profile profile;
GstVC1SeqStructC struct_c;
/* calculated */
guint mb_height;
guint mb_width;
guint mb_stride;
GstVC1AdvancedSeqHdr advanced;
};
/**
* GstVC1PicSimpleMain:
* @bfaction: Should be divided by #GST_VC1_BFRACTION_BASIS
* to get the real value.
*/
struct _GstVC1PicSimpleMain
{
guint8 frmcnt;
guint8 mvrange;
guint8 rangeredfrm;
/* I and P pic simple and main profiles only */
guint8 respic;
/* I and BI pic simple and main profiles only */
guint8 transacfrm2;
guint8 bf;
/* B and P pic simple and main profiles only */
guint8 mvmode;
guint8 mvtab;
guint8 ttmbf;
/* P pic simple and main profiles only */
guint8 mvmode2;
guint8 lumscale;
guint8 lumshift;
guint8 cbptab;
guint8 ttfrm;
/* B and BI picture only
* Should be divided by #GST_VC1_BFRACTION_BASIS
* to get the real value. */
guint16 bfraction;
/* Biplane value, those fields only mention the fact
* that the bitplane is in raw mode or not */
guint8 mvtypemb;
guint8 skipmb;
guint8 directmb; /* B pic main profile only */
};
/**
* GstVC1PicAdvanced:
* @bfaction: Should be divided by #GST_VC1_BFRACTION_BASIS
* to get the real value.
*/
struct _GstVC1PicAdvanced
{
GstVC1FrameCodingMode fcm;
guint8 tfcntr;
guint8 rptfrm;
guint8 tff;
guint8 rff;
guint8 ps_present;
guint32 ps_hoffset;
guint32 ps_voffset;
guint16 ps_width;
guint16 ps_height;
guint8 rndctrl;
guint8 uvsamp;
guint8 postproc;
/* B and P picture specific */
guint8 mvrange;
guint8 mvmode;
guint8 mvtab;
guint8 cbptab;
guint8 ttmbf;
guint8 ttfrm;
/* B and BI picture only
* Should be divided by #GST_VC1_BFRACTION_BASIS
* to get the real value. */
guint16 bfraction;
/* ppic */
guint8 mvmode2;
guint8 lumscale;
guint8 lumshift;
/* bipic */
guint8 bf;
guint8 condover;
guint8 transacfrm2;
/* Biplane value, those fields only mention the fact
* that the bitplane is in raw mode or not */
guint8 acpred;
guint8 overflags;
guint8 mvtypemb;
guint8 skipmb;
guint8 directmb;
guint8 forwardmb; /* B pic interlace field only */
/* For interlaced pictures only */
guint8 fieldtx;
/* P and B pictures */
guint8 intcomp;
guint8 dmvrange;
guint8 mbmodetab;
guint8 imvtab;
guint8 icbptab;
guint8 mvbptab2;
guint8 mvbptab4; /* If 4mvswitch in ppic */
/* P picture */
guint8 mvswitch4;
/* For interlaced fields only */
guint16 refdist;
guint8 fptype; /* Raw value */
/* P pic */
guint8 numref;
guint8 reffield;
guint8 lumscale2;
guint8 lumshift2;
guint8 intcompfield;
};
struct _GstVC1BitPlanes
{
guint8 *acpred;
guint8 *fieldtx;
guint8 *overflags;
guint8 *mvtypemb;
guint8 *skipmb;
guint8 *directmb;
guint8 *forwardmb;
guint size; /* Size of the arrays */
};
struct _GstVC1VopDquant
{
guint8 pqdiff;
guint8 abspq;
/* Computed */
guint8 altpquant;
/* if dqant != 2*/
guint8 dquantfrm;
guint8 dqprofile;
/* Boundary edge selection. This represents DQSBEDGE
* if dqprofile == GST_VC1_DQPROFILE_SINGLE_EDGE or
* DQDBEDGE if dqprofile == GST_VC1_DQPROFILE_DOUBLE_EDGE */
guint8 dqbedge;
/* FIXME: remove */
guint8 unused;
/* if dqprofile == GST_VC1_DQPROFILE_ALL_MBS */
guint8 dqbilevel;
};
struct _GstVC1FrameLayer
{
guint8 key;
guint32 framesize;
guint32 timestamp;
/* calculated */
guint32 next_framelayer_offset;
guint8 skiped_p_frame;
};
/**
* GstVC1FrameHdr:
*
* Structure that represent picture in any profile or mode.
* You should look at @ptype and @profile to know what is currently
* in use.
*/
struct _GstVC1FrameHdr
{
/* common fields */
GstVC1PictureType ptype;
guint8 interpfrm;
guint8 halfqp;
guint8 transacfrm;
guint8 transdctab;
guint8 pqindex;
guint8 pquantizer;
/* Computed */
guint8 pquant;
/* Convenience fields */
guint8 profile;
guint8 dquant;
/* If dquant */
GstVC1VopDquant vopdquant;
union {
GstVC1PicSimpleMain simple;
GstVC1PicAdvanced advanced;
} pic;
/* Size of the picture layer in bits */
guint header_size;
};
/**
* GstVC1SliceHdr:
*
* Structure that represents slice layer in advanced profile.
*/
struct _GstVC1SliceHdr
{
guint16 slice_addr;
/* Size of the slice layer in bits */
guint header_size;
};
/**
* GstVC1BDU:
*
* Structure that represents a Bitstream Data Unit.
*/
struct _GstVC1BDU
{
GstVC1StartCode type;
guint size;
guint sc_offset;
guint offset;
guint8 * data;
};
GST_CODEC_PARSERS_API
GstVC1ParserResult gst_vc1_identify_next_bdu (const guint8 *data,
gsize size,
GstVC1BDU *bdu);
GST_CODEC_PARSERS_API
GstVC1ParserResult gst_vc1_parse_sequence_header (const guint8 *data,
gsize size,
GstVC1SeqHdr * seqhdr);
GST_CODEC_PARSERS_API
GstVC1ParserResult gst_vc1_parse_entry_point_header (const guint8 *data,
gsize size,
GstVC1EntryPointHdr * entrypoint,
GstVC1SeqHdr *seqhdr);
GST_CODEC_PARSERS_API
GstVC1ParserResult gst_vc1_parse_sequence_layer (const guint8 *data,
gsize size,
GstVC1SeqLayer * seqlayer);
GST_CODEC_PARSERS_API
GstVC1ParserResult
gst_vc1_parse_sequence_header_struct_a (const guint8 *data,
gsize size,
GstVC1SeqStructA *structa);
GST_CODEC_PARSERS_API
GstVC1ParserResult
gst_vc1_parse_sequence_header_struct_b (const guint8 *data,
gsize size,
GstVC1SeqStructB *structb);
GST_CODEC_PARSERS_API
GstVC1ParserResult
gst_vc1_parse_sequence_header_struct_c (const guint8 *data,
gsize size,
GstVC1SeqStructC *structc);
GST_CODEC_PARSERS_API
GstVC1ParserResult gst_vc1_parse_frame_layer (const guint8 *data,
gsize size,
GstVC1FrameLayer * framelayer);
GST_CODEC_PARSERS_API
GstVC1ParserResult gst_vc1_parse_frame_header (const guint8 *data,
gsize size,
GstVC1FrameHdr * framehdr,
GstVC1SeqHdr *seqhdr,
GstVC1BitPlanes *bitplanes);
GST_CODEC_PARSERS_API
GstVC1ParserResult gst_vc1_parse_field_header (const guint8 *data,
gsize size,
GstVC1FrameHdr * fieldhdr,
GstVC1SeqHdr *seqhdr,
GstVC1BitPlanes *bitplanes);
GST_CODEC_PARSERS_API
GstVC1ParserResult gst_vc1_parse_slice_header (const guint8 *data,
gsize size,
GstVC1SliceHdr *slicehdr,
GstVC1SeqHdr *seqhdr);
GST_CODEC_PARSERS_API
GstVC1BitPlanes * gst_vc1_bitplanes_new (void);
GST_CODEC_PARSERS_API
void gst_vc1_bitplanes_free (GstVC1BitPlanes *bitplanes);
GST_CODEC_PARSERS_API
void gst_vc1_bitplanes_free_1 (GstVC1BitPlanes *bitplanes);
GST_CODEC_PARSERS_API
gboolean gst_vc1_bitplanes_ensure_size (GstVC1BitPlanes *bitplanes,
GstVC1SeqHdr *seqhdr);
G_END_DECLS
#endif
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