Move some declarations into header

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

Originally committed as revision 8884 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 328 insertions, 0 deletions

diff --git a/libavcodec/vc1.h b/libavcodec/vc1.h
index 68cb77b1d1..434eb4552e 100644
--- a/libavcodec/vc1.h
+++ b/libavcodec/vc1.h
@@ -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;