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Move some declarations into header

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Based on patch by Denis Fortin
(cons (car '(fortin NOSPAM)) '(nerim net))

Originally committed as revision 8884 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Kostya Shishkov 18 years ago
parent b0caf888d2
commit 7d9a6a0fc3
2 changed files with 328 additions and 327 deletions
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  1. 327
      libavcodec/vc1.c
  2. 328
      libavcodec/vc1.h

327
libavcodec/vc1.c
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@ -47,333 +47,6 @@ extern const uint16_t ff_msmp4_mb_i_table[64][2];
#define AC_VLC_BITS 9
static const uint16_t table_mb_intra[64][2];
/** Available Profiles */
//@{
enum Profile {
PROFILE_SIMPLE,
PROFILE_MAIN,
PROFILE_COMPLEX, ///< TODO: WMV9 specific
PROFILE_ADVANCED
};
//@}
/** Sequence quantizer mode */
//@{
enum QuantMode {
QUANT_FRAME_IMPLICIT, ///< Implicitly specified at frame level
QUANT_FRAME_EXPLICIT, ///< Explicitly specified at frame level
QUANT_NON_UNIFORM, ///< Non-uniform quant used for all frames
QUANT_UNIFORM ///< Uniform quant used for all frames
};
//@}
/** Where quant can be changed */
//@{
enum DQProfile {
DQPROFILE_FOUR_EDGES,
DQPROFILE_DOUBLE_EDGES,
DQPROFILE_SINGLE_EDGE,
DQPROFILE_ALL_MBS
};
//@}
/** @name Where quant can be changed
*/
//@{
enum DQSingleEdge {
DQSINGLE_BEDGE_LEFT,
DQSINGLE_BEDGE_TOP,
DQSINGLE_BEDGE_RIGHT,
DQSINGLE_BEDGE_BOTTOM
};
//@}
/** Which pair of edges is quantized with ALTPQUANT */
//@{
enum DQDoubleEdge {
DQDOUBLE_BEDGE_TOPLEFT,
DQDOUBLE_BEDGE_TOPRIGHT,
DQDOUBLE_BEDGE_BOTTOMRIGHT,
DQDOUBLE_BEDGE_BOTTOMLEFT
};
//@}
/** MV modes for P frames */
//@{
enum MVModes {
MV_PMODE_1MV_HPEL_BILIN,
MV_PMODE_1MV,
MV_PMODE_1MV_HPEL,
MV_PMODE_MIXED_MV,
MV_PMODE_INTENSITY_COMP
};
//@}
/** @name MV types for B frames */
//@{
enum BMVTypes {
BMV_TYPE_BACKWARD,
BMV_TYPE_FORWARD,
BMV_TYPE_INTERPOLATED
};
//@}
/** @name Block types for P/B frames */
//@{
enum TransformTypes {
TT_8X8,
TT_8X4_BOTTOM,
TT_8X4_TOP,
TT_8X4, //Both halves
TT_4X8_RIGHT,
TT_4X8_LEFT,
TT_4X8, //Both halves
TT_4X4
};
//@}
/** Table for conversion between TTBLK and TTMB */
static const int ttblk_to_tt[3][8] = {
{ TT_8X4, TT_4X8, TT_8X8, TT_4X4, TT_8X4_TOP, TT_8X4_BOTTOM, TT_4X8_RIGHT, TT_4X8_LEFT },
{ TT_8X8, TT_4X8_RIGHT, TT_4X8_LEFT, TT_4X4, TT_8X4, TT_4X8, TT_8X4_BOTTOM, TT_8X4_TOP },
{ TT_8X8, TT_4X8, TT_4X4, TT_8X4_BOTTOM, TT_4X8_RIGHT, TT_4X8_LEFT, TT_8X4, TT_8X4_TOP }
};
static const int ttfrm_to_tt[4] = { TT_8X8, TT_8X4, TT_4X8, TT_4X4 };
/** MV P mode - the 5th element is only used for mode 1 */
static const uint8_t mv_pmode_table[2][5] = {
{ MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_1MV, MV_PMODE_1MV_HPEL, MV_PMODE_INTENSITY_COMP, MV_PMODE_MIXED_MV },
{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_INTENSITY_COMP, MV_PMODE_1MV_HPEL_BILIN }
};
static const uint8_t mv_pmode_table2[2][4] = {
{ MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_1MV, MV_PMODE_1MV_HPEL, MV_PMODE_MIXED_MV },
{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_1MV_HPEL_BILIN }
};
/** One more frame type */
#define BI_TYPE 7
static const int fps_nr[5] = { 24, 25, 30, 50, 60 },
fps_dr[2] = { 1000, 1001 };
static const uint8_t pquant_table[3][32] = {
{ /* Implicit quantizer */
0, 1, 2, 3, 4, 5, 6, 7, 8, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29, 31
},
{ /* Explicit quantizer, pquantizer uniform */
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
},
{ /* Explicit quantizer, pquantizer non-uniform */
0, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 31
}
};
/** @name VC-1 VLC tables and defines
* @todo TODO move this into the context
*/
//@{
#define VC1_BFRACTION_VLC_BITS 7
static VLC vc1_bfraction_vlc;
#define VC1_IMODE_VLC_BITS 4
static VLC vc1_imode_vlc;
#define VC1_NORM2_VLC_BITS 3
static VLC vc1_norm2_vlc;
#define VC1_NORM6_VLC_BITS 9
static VLC vc1_norm6_vlc;
/* Could be optimized, one table only needs 8 bits */
#define VC1_TTMB_VLC_BITS 9 //12
static VLC vc1_ttmb_vlc[3];
#define VC1_MV_DIFF_VLC_BITS 9 //15
static VLC vc1_mv_diff_vlc[4];
#define VC1_CBPCY_P_VLC_BITS 9 //14
static VLC vc1_cbpcy_p_vlc[4];
#define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
static VLC vc1_4mv_block_pattern_vlc[4];
#define VC1_TTBLK_VLC_BITS 5
static VLC vc1_ttblk_vlc[3];
#define VC1_SUBBLKPAT_VLC_BITS 6
static VLC vc1_subblkpat_vlc[3];
static VLC vc1_ac_coeff_table[8];
//@}
enum CodingSet {
CS_HIGH_MOT_INTRA = 0,
CS_HIGH_MOT_INTER,
CS_LOW_MOT_INTRA,
CS_LOW_MOT_INTER,
CS_MID_RATE_INTRA,
CS_MID_RATE_INTER,
CS_HIGH_RATE_INTRA,
CS_HIGH_RATE_INTER
};
/** @name Overlap conditions for Advanced Profile */
//@{
enum COTypes {
CONDOVER_NONE = 0,
CONDOVER_ALL,
CONDOVER_SELECT
};
//@}
/** The VC1 Context
* @fixme Change size wherever another size is more efficient
* Many members are only used for Advanced Profile
*/
typedef struct VC1Context{
MpegEncContext s;
int bits;
/** Simple/Main Profile sequence header */
//@{
int res_sm; ///< reserved, 2b
int res_x8; ///< reserved
int multires; ///< frame-level RESPIC syntax element present
int res_fasttx; ///< reserved, always 1
int res_transtab; ///< reserved, always 0
int rangered; ///< RANGEREDFRM (range reduction) syntax element present
///< at frame level
int res_rtm_flag; ///< reserved, set to 1
int reserved; ///< reserved
//@}
/** Advanced Profile */
//@{
int level; ///< 3bits, for Advanced/Simple Profile, provided by TS layer
int chromaformat; ///< 2bits, 2=4:2:0, only defined
int postprocflag; ///< Per-frame processing suggestion flag present
int broadcast; ///< TFF/RFF present
int interlace; ///< Progressive/interlaced (RPTFTM syntax element)
int tfcntrflag; ///< TFCNTR present
int panscanflag; ///< NUMPANSCANWIN, TOPLEFT{X,Y}, BOTRIGHT{X,Y} present
int extended_dmv; ///< Additional extended dmv range at P/B frame-level
int color_prim; ///< 8bits, chroma coordinates of the color primaries
int transfer_char; ///< 8bits, Opto-electronic transfer characteristics
int matrix_coef; ///< 8bits, Color primaries->YCbCr transform matrix
int hrd_param_flag; ///< Presence of Hypothetical Reference
///< Decoder parameters
int psf; ///< Progressive Segmented Frame
//@}
/** Sequence header data for all Profiles
* TODO: choose between ints, uint8_ts and monobit flags
*/
//@{
int profile; ///< 2bits, Profile
int frmrtq_postproc; ///< 3bits,
int bitrtq_postproc; ///< 5bits, quantized framerate-based postprocessing strength
int fastuvmc; ///< Rounding of qpel vector to hpel ? (not in Simple)
int extended_mv; ///< Ext MV in P/B (not in Simple)
int dquant; ///< How qscale varies with MBs, 2bits (not in Simple)
int vstransform; ///< variable-size [48]x[48] transform type + info
int overlap; ///< overlapped transforms in use
int quantizer_mode; ///< 2bits, quantizer mode used for sequence, see QUANT_*
int finterpflag; ///< INTERPFRM present
//@}
/** Frame decoding info for all profiles */
//@{
uint8_t mv_mode; ///< MV coding monde
uint8_t mv_mode2; ///< Secondary MV coding mode (B frames)
int k_x; ///< Number of bits for MVs (depends on MV range)
int k_y; ///< Number of bits for MVs (depends on MV range)
int range_x, range_y; ///< MV range
uint8_t pq, altpq; ///< Current/alternate frame quantizer scale
/** pquant parameters */
//@{
uint8_t dquantfrm;
uint8_t dqprofile;
uint8_t dqsbedge;
uint8_t dqbilevel;
//@}
/** AC coding set indexes
* @see 8.1.1.10, p(1)10
*/
//@{
int c_ac_table_index; ///< Chroma index from ACFRM element
int y_ac_table_index; ///< Luma index from AC2FRM element
//@}
int ttfrm; ///< Transform type info present at frame level
uint8_t ttmbf; ///< Transform type flag
uint8_t ttblk4x4; ///< Value of ttblk which indicates a 4x4 transform
int codingset; ///< index of current table set from 11.8 to use for luma block decoding
int codingset2; ///< index of current table set from 11.8 to use for chroma block decoding
int pqindex; ///< raw pqindex used in coding set selection
int a_avail, c_avail;
uint8_t *mb_type_base, *mb_type[3];
/** Luma compensation parameters */
//@{
uint8_t lumscale;
uint8_t lumshift;
//@}
int16_t bfraction; ///< Relative position % anchors=> how to scale MVs
uint8_t halfpq; ///< Uniform quant over image and qp+.5
uint8_t respic; ///< Frame-level flag for resized images
int buffer_fullness; ///< HRD info
/** Ranges:
* -# 0 -> [-64n 63.f] x [-32, 31.f]
* -# 1 -> [-128, 127.f] x [-64, 63.f]
* -# 2 -> [-512, 511.f] x [-128, 127.f]
* -# 3 -> [-1024, 1023.f] x [-256, 255.f]
*/
uint8_t mvrange;
uint8_t pquantizer; ///< Uniform (over sequence) quantizer in use
VLC *cbpcy_vlc; ///< CBPCY VLC table
int tt_index; ///< Index for Transform Type tables
uint8_t* mv_type_mb_plane; ///< bitplane for mv_type == (4MV)
uint8_t* direct_mb_plane; ///< bitplane for "direct" MBs
int mv_type_is_raw; ///< mv type mb plane is not coded
int dmb_is_raw; ///< direct mb plane is raw
int skip_is_raw; ///< skip mb plane is not coded
uint8_t luty[256], lutuv[256]; // lookup tables used for intensity compensation
int use_ic; ///< use intensity compensation in B-frames
int rnd; ///< rounding control
/** Frame decoding info for S/M profiles only */
//@{
uint8_t rangeredfrm; ///< out_sample = CLIP((in_sample-128)*2+128)
uint8_t interpfrm;
//@}
/** Frame decoding info for Advanced profile */
//@{
uint8_t fcm; ///< 0->Progressive, 2->Frame-Interlace, 3->Field-Interlace
uint8_t numpanscanwin;
uint8_t tfcntr;
uint8_t rptfrm, tff, rff;
uint16_t topleftx;
uint16_t toplefty;
uint16_t bottomrightx;
uint16_t bottomrighty;
uint8_t uvsamp;
uint8_t postproc;
int hrd_num_leaky_buckets;
uint8_t bit_rate_exponent;
uint8_t buffer_size_exponent;
uint8_t* acpred_plane; ///< AC prediction flags bitplane
int acpred_is_raw;
uint8_t* over_flags_plane; ///< Overflags bitplane
int overflg_is_raw;
uint8_t condover;
uint16_t *hrd_rate, *hrd_buffer;
uint8_t *hrd_fullness;
uint8_t range_mapy_flag;
uint8_t range_mapuv_flag;
uint8_t range_mapy;
uint8_t range_mapuv;
//@}
int p_frame_skipped;
int bi_type;
} VC1Context;
/**
* Get unary code of limited length

328
libavcodec/vc1.h
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@ -34,3 +34,331 @@ enum VC1Code{
//@}
#define IS_MARKER(x) (((x) & ~0xFF) == VC1_CODE_RES0)
/** Available Profiles */
//@{
enum Profile {
PROFILE_SIMPLE,
PROFILE_MAIN,
PROFILE_COMPLEX, ///< TODO: WMV9 specific
PROFILE_ADVANCED
};
//@}
/** Sequence quantizer mode */
//@{
enum QuantMode {
QUANT_FRAME_IMPLICIT, ///< Implicitly specified at frame level
QUANT_FRAME_EXPLICIT, ///< Explicitly specified at frame level
QUANT_NON_UNIFORM, ///< Non-uniform quant used for all frames
QUANT_UNIFORM ///< Uniform quant used for all frames
};
//@}
/** Where quant can be changed */
//@{
enum DQProfile {
DQPROFILE_FOUR_EDGES,
DQPROFILE_DOUBLE_EDGES,
DQPROFILE_SINGLE_EDGE,
DQPROFILE_ALL_MBS
};
//@}
/** @name Where quant can be changed
*/
//@{
enum DQSingleEdge {
DQSINGLE_BEDGE_LEFT,
DQSINGLE_BEDGE_TOP,
DQSINGLE_BEDGE_RIGHT,
DQSINGLE_BEDGE_BOTTOM
};
//@}
/** Which pair of edges is quantized with ALTPQUANT */
//@{
enum DQDoubleEdge {
DQDOUBLE_BEDGE_TOPLEFT,
DQDOUBLE_BEDGE_TOPRIGHT,
DQDOUBLE_BEDGE_BOTTOMRIGHT,
DQDOUBLE_BEDGE_BOTTOMLEFT
};
//@}
/** MV modes for P frames */
//@{
enum MVModes {
MV_PMODE_1MV_HPEL_BILIN,
MV_PMODE_1MV,
MV_PMODE_1MV_HPEL,
MV_PMODE_MIXED_MV,
MV_PMODE_INTENSITY_COMP
};
//@}
/** @name MV types for B frames */
//@{
enum BMVTypes {
BMV_TYPE_BACKWARD,
BMV_TYPE_FORWARD,
BMV_TYPE_INTERPOLATED
};
//@}
/** @name Block types for P/B frames */
//@{
enum TransformTypes {
TT_8X8,
TT_8X4_BOTTOM,
TT_8X4_TOP,
TT_8X4, //Both halves
TT_4X8_RIGHT,
TT_4X8_LEFT,
TT_4X8, //Both halves
TT_4X4
};
//@}
/** Table for conversion between TTBLK and TTMB */
static const int ttblk_to_tt[3][8] = {
{ TT_8X4, TT_4X8, TT_8X8, TT_4X4, TT_8X4_TOP, TT_8X4_BOTTOM, TT_4X8_RIGHT, TT_4X8_LEFT },
{ TT_8X8, TT_4X8_RIGHT, TT_4X8_LEFT, TT_4X4, TT_8X4, TT_4X8, TT_8X4_BOTTOM, TT_8X4_TOP },
{ TT_8X8, TT_4X8, TT_4X4, TT_8X4_BOTTOM, TT_4X8_RIGHT, TT_4X8_LEFT, TT_8X4, TT_8X4_TOP }
};
static const int ttfrm_to_tt[4] = { TT_8X8, TT_8X4, TT_4X8, TT_4X4 };
/** MV P mode - the 5th element is only used for mode 1 */
static const uint8_t mv_pmode_table[2][5] = {
{ MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_1MV, MV_PMODE_1MV_HPEL, MV_PMODE_INTENSITY_COMP, MV_PMODE_MIXED_MV },
{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_INTENSITY_COMP, MV_PMODE_1MV_HPEL_BILIN }
};
static const uint8_t mv_pmode_table2[2][4] = {
{ MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_1MV, MV_PMODE_1MV_HPEL, MV_PMODE_MIXED_MV },
{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_1MV_HPEL_BILIN }
};
/** One more frame type */
#define BI_TYPE 7
static const int fps_nr[5] = { 24, 25, 30, 50, 60 },
fps_dr[2] = { 1000, 1001 };
static const uint8_t pquant_table[3][32] = {
{ /* Implicit quantizer */
0, 1, 2, 3, 4, 5, 6, 7, 8, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29, 31
},
{ /* Explicit quantizer, pquantizer uniform */
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
},
{ /* Explicit quantizer, pquantizer non-uniform */
0, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 31
}
};
/** @name VC-1 VLC tables and defines
* @todo TODO move this into the context
*/
//@{
#define VC1_BFRACTION_VLC_BITS 7
static VLC vc1_bfraction_vlc;
#define VC1_IMODE_VLC_BITS 4
static VLC vc1_imode_vlc;
#define VC1_NORM2_VLC_BITS 3
static VLC vc1_norm2_vlc;
#define VC1_NORM6_VLC_BITS 9
static VLC vc1_norm6_vlc;
/* Could be optimized, one table only needs 8 bits */
#define VC1_TTMB_VLC_BITS 9 //12
static VLC vc1_ttmb_vlc[3];
#define VC1_MV_DIFF_VLC_BITS 9 //15
static VLC vc1_mv_diff_vlc[4];
#define VC1_CBPCY_P_VLC_BITS 9 //14
static VLC vc1_cbpcy_p_vlc[4];
#define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
static VLC vc1_4mv_block_pattern_vlc[4];
#define VC1_TTBLK_VLC_BITS 5
static VLC vc1_ttblk_vlc[3];
#define VC1_SUBBLKPAT_VLC_BITS 6
static VLC vc1_subblkpat_vlc[3];
static VLC vc1_ac_coeff_table[8];
//@}
enum CodingSet {
CS_HIGH_MOT_INTRA = 0,
CS_HIGH_MOT_INTER,
CS_LOW_MOT_INTRA,
CS_LOW_MOT_INTER,
CS_MID_RATE_INTRA,
CS_MID_RATE_INTER,
CS_HIGH_RATE_INTRA,
CS_HIGH_RATE_INTER
};
/** @name Overlap conditions for Advanced Profile */
//@{
enum COTypes {
CONDOVER_NONE = 0,
CONDOVER_ALL,
CONDOVER_SELECT
};
//@}
/** The VC1 Context
* @fixme Change size wherever another size is more efficient
* Many members are only used for Advanced Profile
*/
typedef struct VC1Context{
MpegEncContext s;
int bits;
/** Simple/Main Profile sequence header */
//@{
int res_sm; ///< reserved, 2b
int res_x8; ///< reserved
int multires; ///< frame-level RESPIC syntax element present
int res_fasttx; ///< reserved, always 1
int res_transtab; ///< reserved, always 0
int rangered; ///< RANGEREDFRM (range reduction) syntax element present
///< at frame level
int res_rtm_flag; ///< reserved, set to 1
int reserved; ///< reserved
//@}
/** Advanced Profile */
//@{
int level; ///< 3bits, for Advanced/Simple Profile, provided by TS layer
int chromaformat; ///< 2bits, 2=4:2:0, only defined
int postprocflag; ///< Per-frame processing suggestion flag present
int broadcast; ///< TFF/RFF present
int interlace; ///< Progressive/interlaced (RPTFTM syntax element)
int tfcntrflag; ///< TFCNTR present
int panscanflag; ///< NUMPANSCANWIN, TOPLEFT{X,Y}, BOTRIGHT{X,Y} present
int extended_dmv; ///< Additional extended dmv range at P/B frame-level
int color_prim; ///< 8bits, chroma coordinates of the color primaries
int transfer_char; ///< 8bits, Opto-electronic transfer characteristics
int matrix_coef; ///< 8bits, Color primaries->YCbCr transform matrix
int hrd_param_flag; ///< Presence of Hypothetical Reference
///< Decoder parameters
int psf; ///< Progressive Segmented Frame
//@}
/** Sequence header data for all Profiles
* TODO: choose between ints, uint8_ts and monobit flags
*/
//@{
int profile; ///< 2bits, Profile
int frmrtq_postproc; ///< 3bits,
int bitrtq_postproc; ///< 5bits, quantized framerate-based postprocessing strength
int fastuvmc; ///< Rounding of qpel vector to hpel ? (not in Simple)
int extended_mv; ///< Ext MV in P/B (not in Simple)
int dquant; ///< How qscale varies with MBs, 2bits (not in Simple)
int vstransform; ///< variable-size [48]x[48] transform type + info
int overlap; ///< overlapped transforms in use
int quantizer_mode; ///< 2bits, quantizer mode used for sequence, see QUANT_*
int finterpflag; ///< INTERPFRM present
//@}
/** Frame decoding info for all profiles */
//@{
uint8_t mv_mode; ///< MV coding monde
uint8_t mv_mode2; ///< Secondary MV coding mode (B frames)
int k_x; ///< Number of bits for MVs (depends on MV range)
int k_y; ///< Number of bits for MVs (depends on MV range)
int range_x, range_y; ///< MV range
uint8_t pq, altpq; ///< Current/alternate frame quantizer scale
/** pquant parameters */
//@{
uint8_t dquantfrm;
uint8_t dqprofile;
uint8_t dqsbedge;
uint8_t dqbilevel;
//@}
/** AC coding set indexes
* @see 8.1.1.10, p(1)10
*/
//@{
int c_ac_table_index; ///< Chroma index from ACFRM element
int y_ac_table_index; ///< Luma index from AC2FRM element
//@}
int ttfrm; ///< Transform type info present at frame level
uint8_t ttmbf; ///< Transform type flag
uint8_t ttblk4x4; ///< Value of ttblk which indicates a 4x4 transform
int codingset; ///< index of current table set from 11.8 to use for luma block decoding
int codingset2; ///< index of current table set from 11.8 to use for chroma block decoding
int pqindex; ///< raw pqindex used in coding set selection
int a_avail, c_avail;
uint8_t *mb_type_base, *mb_type[3];
/** Luma compensation parameters */
//@{
uint8_t lumscale;
uint8_t lumshift;
//@}
int16_t bfraction; ///< Relative position % anchors=> how to scale MVs
uint8_t halfpq; ///< Uniform quant over image and qp+.5
uint8_t respic; ///< Frame-level flag for resized images
int buffer_fullness; ///< HRD info
/** Ranges:
* -# 0 -> [-64n 63.f] x [-32, 31.f]
* -# 1 -> [-128, 127.f] x [-64, 63.f]
* -# 2 -> [-512, 511.f] x [-128, 127.f]
* -# 3 -> [-1024, 1023.f] x [-256, 255.f]
*/
uint8_t mvrange;
uint8_t pquantizer; ///< Uniform (over sequence) quantizer in use
VLC *cbpcy_vlc; ///< CBPCY VLC table
int tt_index; ///< Index for Transform Type tables
uint8_t* mv_type_mb_plane; ///< bitplane for mv_type == (4MV)
uint8_t* direct_mb_plane; ///< bitplane for "direct" MBs
int mv_type_is_raw; ///< mv type mb plane is not coded
int dmb_is_raw; ///< direct mb plane is raw
int skip_is_raw; ///< skip mb plane is not coded
uint8_t luty[256], lutuv[256]; // lookup tables used for intensity compensation
int use_ic; ///< use intensity compensation in B-frames
int rnd; ///< rounding control
/** Frame decoding info for S/M profiles only */
//@{
uint8_t rangeredfrm; ///< out_sample = CLIP((in_sample-128)*2+128)
uint8_t interpfrm;
//@}
/** Frame decoding info for Advanced profile */
//@{
uint8_t fcm; ///< 0->Progressive, 2->Frame-Interlace, 3->Field-Interlace
uint8_t numpanscanwin;
uint8_t tfcntr;
uint8_t rptfrm, tff, rff;
uint16_t topleftx;
uint16_t toplefty;
uint16_t bottomrightx;
uint16_t bottomrighty;
uint8_t uvsamp;
uint8_t postproc;
int hrd_num_leaky_buckets;
uint8_t bit_rate_exponent;
uint8_t buffer_size_exponent;
uint8_t* acpred_plane; ///< AC prediction flags bitplane
int acpred_is_raw;
uint8_t* over_flags_plane; ///< Overflags bitplane
int overflg_is_raw;
uint8_t condover;
uint16_t *hrd_rate, *hrd_buffer;
uint8_t *hrd_fullness;
uint8_t range_mapy_flag;
uint8_t range_mapuv_flag;
uint8_t range_mapy;
uint8_t range_mapuv;
//@}
int p_frame_skipped;
int bi_type;
} VC1Context;

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