* VC-9 and WMV3 decoder
* Copyright (c) 2005 Anonymous
* Copyright (c) 2005 Alex Beregszaszi
+ * Copyright (c) 2005 Michael Niedermayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* @file vc9.c
* VC-9 and WMV3 decoder
*
- * TODO: Norm-6 bitplane imode, most AP stuff, optimize, all of MB layer :)
+ * TODO: most AP stuff, optimize, most of MB layer, transform, filtering and motion compensation, etc
* TODO: use MPV_ !!
*/
#include "common.h"
#include "mpegvideo.h"
#include "vc9data.h"
+#undef NDEBUG
+#include <assert.h>
+
+extern const uint32_t ff_table0_dc_lum[120][2], ff_table1_dc_lum[120][2];
+extern const uint32_t ff_table0_dc_chroma[120][2], ff_table1_dc_chroma[120][2];
+extern VLC ff_msmp4_dc_luma_vlc[2], ff_msmp4_dc_chroma_vlc[2];
+#define MB_INTRA_VLC_BITS 9
+extern VLC ff_msmp4_mb_i_vlc;
+#define DC_VLC_BITS 9
+static const uint16_t table_mb_intra[64][2];
+
/* Some inhibiting stuff */
-#define HAS_ADVANCED_PROFILE 1
+#define HAS_ADVANCED_PROFILE 0
#define TRACE 1
#if TRACE
if (init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, \
codes, codes_wrap, codes_size, use_static) < 0) \
{ \
- av_log(v->avctx, AV_LOG_ERROR, "Error for " # vlc " (%i)\n", i); \
+ av_log(v->s.avctx, AV_LOG_ERROR, "Error for " # vlc " (%i)\n", i); \
return -1; \
}
#else
codes, codes_wrap, codes_size, use_static)
#endif
+/** Available Profiles */
+//@{
#define PROFILE_SIMPLE 0
#define PROFILE_MAIN 1
+#define PROFILE_COMPLEX 2 ///< TODO: WMV9 specific
#define PROFILE_ADVANCED 3
-
-#define QUANT_FRAME_IMPLICIT 0
-#define QUANT_FRAME_EXPLICIT 1
-#define QUANT_NON_UNIFORM 2
-#define QUANT_UNIFORM 3
-
-/* Where quant can be changed */
+//@}
+
+/** Sequence quantizer mode */
+//@{
+#define QUANT_FRAME_IMPLICIT 0 ///< Implicitly specified at frame level
+#define QUANT_FRAME_EXPLICIT 1 ///< Explicitly specified at frame level
+#define QUANT_NON_UNIFORM 2 ///< Non-uniform quant used for all frames
+#define QUANT_UNIFORM 3 ///< Uniform quant used for all frames
+//@}
+
+/** Where quant can be changed */
+//@{
#define DQPROFILE_FOUR_EDGES 0
#define DQPROFILE_DOUBLE_EDGES 1
#define DQPROFILE_SINGLE_EDGE 2
#define DQPROFILE_ALL_MBS 3
+//@}
-/* Which edge is quantized with ALTPQUANT */
+/** @name Where quant can be changed
+ */
+//@{
+#define DQPROFILE_FOUR_EDGES 0
#define DQSINGLE_BEDGE_LEFT 0
#define DQSINGLE_BEDGE_TOP 1
#define DQSINGLE_BEDGE_RIGHT 2
#define DQSINGLE_BEDGE_BOTTOM 3
+//@}
-/* Which pair of edges is quantized with ALTPQUANT */
+/** Which pair of edges is quantized with ALTPQUANT */
+//@{
#define DQDOUBLE_BEDGE_TOPLEFT 0
#define DQDOUBLE_BEDGE_TOPRIGHT 1
#define DQDOUBLE_BEDGE_BOTTOMRIGHT 2
#define DQDOUBLE_BEDGE_BOTTOMLEFT 3
+//@}
-
-/* Start Codes */
-#define SEQ_SC 0x00000010F /* Sequence Start Code */
-#define SEQ_EC 0x00000000A /* Sequence End code */
-#define SEQ_HDR /* Sequence Header */
-#define ENTRY_SC 0x00000010E /* Entry Point Start Code */
-#define ENTRY_HDR /* Entry Point Header */
-#define FRM_SC 0x00000010D /* Frame Start Code */
-#define FRM_DAT /* Frame Data (includes a Frame Header) */
-#define FLD_SC 0x00000010C /* Field Start Code */
-#define FLD1_DAT /* Field 1 Data (includes a Frame Header) */
-#define FLD2_DAT /* Field 2 Data (includes a Field Header) */
-#define SLC_SC 0x00000010B /* Slice Start Code */
-#define SLC_HDR /* Slice Header */
-#define SLC_DAT /* Slice Data (FrH or FiH possible) */
-
-/* MV P modes */
+/** MV modes for P frames */
+//@{
#define MV_PMODE_1MV_HPEL_BILIN 0
#define MV_PMODE_1MV 1
#define MV_PMODE_1MV_HPEL 2
#define MV_PMODE_MIXED_MV 3
#define MV_PMODE_INTENSITY_COMP 4
+//@}
+
+/** @name MV types for B frames */
+//@{
+#define BMV_TYPE_BACKWARD 0
+#define BMV_TYPE_BACKWARD 0
+#define BMV_TYPE_FORWARD 1
+#define BMV_TYPE_INTERPOLATED 3
+//@}
-/* MV P mode - the 5th element is only used for mode 1 */
+/** 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_MIXED_MV, MV_PMODE_INTENSITY_COMP },
{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_INTENSITY_COMP }
};
-/* One more frame type */
+/** One more frame type */
#define BI_TYPE 7
-/* FIXME Worse than ugly */
static const int fps_nr[5] = { 24, 25, 30, 50, 60 },
fps_dr[2] = { 1000, 1001 };
static const uint8_t pquant_table[3][32] = {
}
};
-// FIXME move this into the context
+/** @name VC-9 VLC tables and defines
+ * @todo TODO move this into the context
+ */
+//@{
#define VC9_BFRACTION_VLC_BITS 7
static VLC vc9_bfraction_vlc;
#define VC9_IMODE_VLC_BITS 4
static VLC vc9_imode_vlc;
#define VC9_NORM2_VLC_BITS 3
static VLC vc9_norm2_vlc;
+#define VC9_NORM6_VLC_BITS 9
+static VLC vc9_norm6_vlc;
/* Could be optimized, one table only needs 8 bits */
-#define VC9_TTMB_VLC_BITS 12
+#define VC9_TTMB_VLC_BITS 9 //12
static VLC vc9_ttmb_vlc[3];
-#define VC9_MV_DIFF_VLC_BITS 15
+#define VC9_MV_DIFF_VLC_BITS 9 //15
static VLC vc9_mv_diff_vlc[4];
-#define VC9_CBPCY_I_VLC_BITS 13
-static VLC vc9_cbpcy_i_vlc;
-#define VC9_CBPCY_P_VLC_BITS 14
+#define VC9_CBPCY_P_VLC_BITS 9 //14
static VLC vc9_cbpcy_p_vlc[4];
#define VC9_4MV_BLOCK_PATTERN_VLC_BITS 6
static VLC vc9_4mv_block_pattern_vlc[4];
-#define VC9_LUMA_DC_VLC_BITS 26
-static VLC vc9_luma_dc_vlc[2];
-
+#define VC9_TTBLK_VLC_BITS 5
+static VLC vc9_ttblk_vlc[3];
+#define VC9_SUBBLKPAT_VLC_BITS 6
+static VLC vc9_subblkpat_vlc[3];
+//@}
+
+/** Bitplane struct
+ * We mainly need data and is_raw, so this struct could be avoided
+ * to save a level of indirection; feel free to modify
+ * @fixme For now, stride=width
+ * @warning Data are bits, either 1 or 0
+ */
+typedef struct BitPlane {
+ uint8_t *data; ///< Data buffer
+ int width; ///< Width of the buffer
+ int stride; ///< Stride of the buffer
+ int height; ///< Plane height
+ uint8_t is_raw; ///< Bit values must be read at MB level
+} BitPlane;
+
+/** The VC9 Context
+ * @fixme Change size wherever another size is more efficient
+ * Many members are only used for Advanced Profile
+ */
typedef struct VC9Context{
- /* No MpegEnc context, might be good to use it */
- GetBitContext gb;
- AVCodecContext *avctx;
-
- /***************************/
- /* Sequence Header */
- /***************************/
- /* Simple/Main Profile */
- int res_sm; //reserved, 2b
- int res_x8; //reserved
- int multires; //frame-level RESPIC syntax element present
- int res_fasttx; //always 1
- int res_transtab; //always 0
- int syncmarker; //Sync markers presents
- int rangered; //RANGEREDFRM (range reduction) syntax element present
- int res_rtm_flag; //reserved, set to 1
- int reserved; //duh
+ MpegEncContext s;
+
+ /** 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
+ //@}
#if HAS_ADVANCED_PROFILE
- /* Advanced Profile */
- int level; //3
- int chromaformat; //2
- int postprocflag; //frame-based processing use
- 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} presents
- int extended_dmv;
- int color_prim; //8
- int transfer_char; //8
- int matrix_coef; //8
- int hrd_param_flag;
+ /** 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
+ //@}
#endif
- /* All Profiles */
- /* TODO: move all int to flags */
- int profile; //2
- int frmrtq_postproc; //3
- int bitrtq_postproc; //5
- int loopfilter;
- int fastuvmc; //Rounding of qpel vector to hpel ? (not in Simple)
- int extended_mv; //Ext MV in P/B (not in Simple)
- int dquant; //Q varies with MBs, 2bits (not in Simple)
- int vstransform; //variable-size transform46
-
- int overlap; //overlapped transforms in use
- int quantizer_mode; //2, quantizer mode used for sequence, see QUANT_*
- int finterpflag; //INTERPFRM present
-
-
- /*****************************/
- /* Frame decoding */
- /*****************************/
- /* All profiles */
- uint8_t mv_mode, mv_mode2; /* MV coding mode */
- uint8_t pict_type; /* Picture type, mapped on MPEG types */
- uint8_t pq, altpq; /* Quantizers */
- uint8_t dquantfrm, dqprofile, dqsbedge, dqbilevel; /* pquant parameters */
- int width_mb, height_mb;
- int tile; /* 3x2 if (width_mb%3) else 2x3 */
- int transacfrm2, transacfrm, transacdctab; //1bit elements
- uint8_t ttmbf, ttfrm; /* Transform type */
- uint8_t lumscale, lumshift; /* Luma compensation parameters */
- int16_t bfraction; /* Relative position % anchors=> how to scale MVs */
- uint8_t halfpq; /* Uniform quant over image and qp+.5 */
- uint8_t respic;
- /* 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;
- VLC *cbpcy_vlc /* Current CBPCY VLC table */,
- *mv_diff_vlc /* Current MV Diff VLC table */,
- *ttmb_vlc /* Current MB Transform Type VLC table */;
- uint8_t *mv_type_mb_plane; /* bitplane for mv_type == "raw" */
- uint8_t *skip_mb_plane, /* bitplane for skipped MBs */
- *direct_mb_plane; /* bitplane for "direct" MBs */
-
- /* S/M only ? */
- uint8_t rangeredfrm, interpfrm;
+
+ /** 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)
+ 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
+ int ttmb; ///< Transform type
+ uint8_t ttblk4x4; ///< Value of ttblk which indicates a 4x4 transform
+ /** 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
+ uint8_t *previous_line_cbpcy; ///< To use for predicted CBPCY
+ VLC *cbpcy_vlc; ///< CBPCY VLC table
+ int tt_index; ///< Index for Transform Type tables
+ BitPlane mv_type_mb_plane; ///< bitplane for mv_type == (4MV)
+ BitPlane skip_mb_plane; ///< bitplane for skipped MBs
+ BitPlane direct_mb_plane; ///< bitplane for "direct" MBs
+
+ /** Frame decoding info for S/M profiles only */
+ //@{
+ uint8_t rangeredfrm; ///< out_sample = CLIP((in_sample-128)*2+128)
+ uint8_t interpfrm;
+ //@}
#if HAS_ADVANCED_PROFILE
- /* Advanced */
- uint8_t fcm; //0->Progressive, 2->Frame-Interlace, 3->Field-Interlace
- uint8_t numpanscanwin;
- uint8_t tfcntr;
- uint8_t rptfrm, tff, rff;
- uint8_t topleftx;
- uint8_t toplefty;
- uint8_t bottomrightx;
- uint8_t bottomrighty;
- uint8_t rndctrl;
- uint8_t uvsamp;
- uint8_t postproc;
- int hrd_num_leaky_buckets;
- uint8_t bit_rate_exponent;
- uint8_t buffer_size_exponent;
- uint8_t *ac_pred_plane;
- uint8_t *over_flags_plane;
- uint16_t *hrd_rate, *hrd_buffer;
+ /** 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;
+ BitPlane ac_pred_plane; ///< AC prediction flags bitplane
+ BitPlane over_flags_plane; ///< Overflags bitplane
+ 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;
+ //@}
#endif
} VC9Context;
-/* FIXME Slow and ugly */
+/**
+ * Get unary code of limited length
+ * @fixme FIXME Slow and ugly
+ * @param gb GetBitContext
+ * @param[in] stop The bitstop value (unary code of 1's or 0's)
+ * @param[in] len Maximum length
+ * @return Unary length/index
+ */
static int get_prefix(GetBitContext *gb, int stop, int len)
{
+#if 1
int i = 0, tmp = !stop;
while (i != len && tmp != stop)
tmp = get_bits(gb, 1);
i++;
}
+ if (i == len && tmp != stop) return len+1;
return i;
+#else
+ unsigned int buf;
+ int log;
+
+ OPEN_READER(re, gb);
+ UPDATE_CACHE(re, gb);
+ buf=GET_CACHE(re, gb); //Still not sure
+ if (stop) buf = ~buf;
+
+ log= av_log2(-buf); //FIXME: -?
+ if (log < limit){
+ LAST_SKIP_BITS(re, gb, log+1);
+ CLOSE_READER(re, gb);
+ return log;
+ }
+
+ LAST_SKIP_BITS(re, gb, limit);
+ CLOSE_READER(re, gb);
+ return limit;
+#endif
}
-static int init_common(VC9Context *v)
+/**
+ * Init VC-9 specific tables and VC9Context members
+ * @param v The VC9Context to initialize
+ * @return Status
+ */
+static int vc9_init_common(VC9Context *v)
{
static int done = 0;
- int i;
+ int i = 0;
- v->mv_type_mb_plane = v->direct_mb_plane = v->skip_mb_plane = NULL;
- v->pq = -1;
+ /* Set the bit planes */
+ v->mv_type_mb_plane = (struct BitPlane) { NULL, 0, 0, 0 };
+ v->direct_mb_plane = (struct BitPlane) { NULL, 0, 0, 0 };
+ v->skip_mb_plane = (struct BitPlane) { NULL, 0, 0, 0 };
#if HAS_ADVANCED_PROFILE
- v->ac_pred_plane = v->over_flags_plane = NULL;
+ v->ac_pred_plane = v->over_flags_plane = (struct BitPlane) { NULL, 0, 0, 0 };
v->hrd_rate = v->hrd_buffer = NULL;
#endif
+
+ /* VLC tables */
+#if 0 // spec -> actual tables converter
+ for(i=0; i<64; i++){
+ int code= (vc9_norm6_spec[i][1] << vc9_norm6_spec[i][4]) + vc9_norm6_spec[i][3];
+ av_log(NULL, AV_LOG_DEBUG, "0x%03X, ", code);
+ if(i%16==15) av_log(NULL, AV_LOG_DEBUG, "\n");
+ }
+ for(i=0; i<64; i++){
+ int code= vc9_norm6_spec[i][2] + vc9_norm6_spec[i][4];
+ av_log(NULL, AV_LOG_DEBUG, "%2d, ", code);
+ if(i%16==15) av_log(NULL, AV_LOG_DEBUG, "\n");
+ }
+#endif
if(!done)
{
done = 1;
INIT_VLC(&vc9_norm2_vlc, VC9_NORM2_VLC_BITS, 4,
vc9_norm2_bits, 1, 1,
vc9_norm2_codes, 1, 1, 1);
- INIT_VLC(&vc9_cbpcy_i_vlc, VC9_CBPCY_I_VLC_BITS, 64,
- vc9_cbpcy_i_bits, 1, 1,
- vc9_cbpcy_i_codes, 2, 2, 1);
+ INIT_VLC(&vc9_norm6_vlc, VC9_NORM6_VLC_BITS, 64,
+ vc9_norm6_bits, 1, 1,
+ vc9_norm6_codes, 2, 2, 1);
INIT_VLC(&vc9_imode_vlc, VC9_IMODE_VLC_BITS, 7,
vc9_imode_bits, 1, 1,
vc9_imode_codes, 1, 1, 1);
- for(i=0; i<3; i++)
+ for (i=0; i<3; i++)
+ {
+ INIT_VLC(&vc9_ttmb_vlc[i], VC9_TTMB_VLC_BITS, 16,
+ vc9_ttmb_bits[i], 1, 1,
+ vc9_ttmb_codes[i], 2, 2, 1);
+ INIT_VLC(&vc9_ttblk_vlc[i], VC9_TTBLK_VLC_BITS, 8,
+ vc9_ttblk_bits[i], 1, 1,
+ vc9_ttblk_codes[i], 1, 1, 1);
+ INIT_VLC(&vc9_subblkpat_vlc[i], VC9_SUBBLKPAT_VLC_BITS, 15,
+ vc9_subblkpat_bits[i], 1, 1,
+ vc9_subblkpat_codes[i], 1, 1, 1);
+ }
+ for(i=0; i<4; i++)
{
INIT_VLC(&vc9_4mv_block_pattern_vlc[i], VC9_4MV_BLOCK_PATTERN_VLC_BITS, 16,
vc9_4mv_block_pattern_bits[i], 1, 1,
INIT_VLC(&vc9_cbpcy_p_vlc[i], VC9_CBPCY_P_VLC_BITS, 64,
vc9_cbpcy_p_bits[i], 1, 1,
vc9_cbpcy_p_codes[i], 2, 2, 1);
- }
- for (i=0; i<2; i++)
- {
INIT_VLC(&vc9_mv_diff_vlc[i], VC9_MV_DIFF_VLC_BITS, 73,
vc9_mv_diff_bits[i], 1, 1,
vc9_mv_diff_codes[i], 2, 2, 1);
- INIT_VLC(&vc9_luma_dc_vlc[i], VC9_LUMA_DC_VLC_BITS, 26,
- vc9_luma_dc_bits[i], 1, 1,
- vc9_luma_dc_codes[i], 4, 4, 1);
- INIT_VLC(&vc9_ttmb_vlc[i], VC9_TTMB_VLC_BITS, 16,
- vc9_ttmb_bits[i], 1, 1,
- vc9_ttmb_codes[i], 2, 2, 1);
}
}
+ /* Other defaults */
+ v->pq = -1;
+ v->mvrange = 0; /* 7.1.1.18, p80 */
+
return 0;
}
#if HAS_ADVANCED_PROFILE
+/**
+ * Decode sequence header's Hypothetic Reference Decoder data
+ * @see 6.2.1, p32
+ * @param v The VC9Context to initialize
+ * @param gb A GetBitContext initialized from AVCodecContext extra_data
+ * @return Status
+ */
static int decode_hrd(VC9Context *v, GetBitContext *gb)
{
int i, num;
- num = get_bits(gb, 5);
+ num = 1 + get_bits(gb, 5);
+ /*hrd rate*/
if (v->hrd_rate || num != v->hrd_num_leaky_buckets)
{
- av_free(v->hrd_rate);
- v->hrd_rate = NULL;
+ av_freep(&v->hrd_rate);
}
- if (!v->hrd_rate) v->hrd_rate = av_malloc(num);
+ if (!v->hrd_rate) v->hrd_rate = av_malloc(num*sizeof(uint16_t));
if (!v->hrd_rate) return -1;
+ /*hrd buffer*/
if (v->hrd_buffer || num != v->hrd_num_leaky_buckets)
{
- av_free(v->hrd_buffer);
- v->hrd_buffer = NULL;
+ av_freep(&v->hrd_buffer);
+ }
+ if (!v->hrd_buffer) v->hrd_buffer = av_malloc(num*sizeof(uint16_t));
+ if (!v->hrd_buffer)
+ {
+ av_freep(&v->hrd_rate);
+ return -1;
}
- if (!v->hrd_buffer) v->hrd_buffer = av_malloc(num);
- if (!v->hrd_buffer) return -1;
+ /*hrd fullness*/
+ if (v->hrd_fullness || num != v->hrd_num_leaky_buckets)
+ {
+ av_freep(&v->hrd_buffer);
+ }
+ if (!v->hrd_fullness) v->hrd_fullness = av_malloc(num*sizeof(uint8_t));
+ if (!v->hrd_fullness)
+ {
+ av_freep(&v->hrd_rate);
+ av_freep(&v->hrd_buffer);
+ return -1;
+ }
v->hrd_num_leaky_buckets = num;
//exponent in base-2 for rate
- v->bit_rate_exponent = get_bits(gb, 4);
+ v->bit_rate_exponent = 6 + get_bits(gb, 4);
//exponent in base-2 for buffer_size
- v->buffer_size_exponent = get_bits(gb, 4);
+ v->buffer_size_exponent = 4 + get_bits(gb, 4);
for (i=0; i<num; i++)
{
//mantissae, ordered (if not, use a function ?
- v->hrd_rate[i] = get_bits(gb, 16);
+ v->hrd_rate[i] = 1 + get_bits(gb, 16);
if (i && v->hrd_rate[i-1]>=v->hrd_rate[i])
{
- av_log(v, AV_LOG_ERROR, "HDR Rates aren't strictly increasing:"
+ av_log(v->s.avctx, AV_LOG_ERROR, "HDR Rates aren't strictly increasing:"
"%i vs %i\n", v->hrd_rate[i-1], v->hrd_rate[i]);
return -1;
}
- v->hrd_buffer[i] = get_bits(gb, 16);
+ v->hrd_buffer[i] = 1 + get_bits(gb, 16);
if (i && v->hrd_buffer[i-1]<v->hrd_buffer[i])
{
- av_log(v, AV_LOG_ERROR, "HDR Buffers aren't decreasing:"
+ av_log(v->s.avctx, AV_LOG_ERROR, "HDR Buffers aren't decreasing:"
"%i vs %i\n", v->hrd_buffer[i-1], v->hrd_buffer[i]);
return -1;
}
return 0;
}
+/**
+ * Decode sequence header for Advanced Profile
+ * @see Table 2, p18
+ * @see 6.1.7, pp21-27
+ * @param v The VC9Context to initialize
+ * @param gb A GetBitContext initialized from AVCodecContext extra_data
+ * @return Status
+ */
static int decode_advanced_sequence_header(AVCodecContext *avctx, GetBitContext *gb)
{
VC9Context *v = avctx->priv_data;
if (v->extended_mv)
v->extended_dmv = get_bits(gb, 1);
+ /* 6.1.7, p21 */
if (get_bits(gb, 1) /* pic_size_flag */)
{
- avctx->coded_width = get_bits(gb, 12);
- avctx->coded_height = get_bits(gb, 12);
+ avctx->coded_width = get_bits(gb, 12) << 1;
+ avctx->coded_height = get_bits(gb, 12) << 1;
if ( get_bits(gb, 1) /* disp_size_flag */)
{
avctx->width = get_bits(gb, 14);
avctx->height = get_bits(gb, 14);
}
+ /* 6.1.7.4, p23 */
if ( get_bits(gb, 1) /* aspect_ratio_flag */)
{
aspect_ratio = get_bits(gb, 4); //SAR
if (aspect_ratio == 0x0F) //FF_ASPECT_EXTENDED
{
- avctx->sample_aspect_ratio.num = get_bits(gb, 8);
- avctx->sample_aspect_ratio.den = get_bits(gb, 8);
+ avctx->sample_aspect_ratio.num = 1 + get_bits(gb, 8);
+ avctx->sample_aspect_ratio.den = 1 + get_bits(gb, 8);
}
else if (aspect_ratio == 0x0E)
{
avctx->coded_height = avctx->height;
}
+ /* 6.1.8, p23 */
if ( get_bits(gb, 1) /* framerateflag */)
{
- if ( get_bits(gb, 1) /* framerateind */)
+ if ( !get_bits(gb, 1) /* framerateind */)
{
nr = get_bits(gb, 8);
dr = get_bits(gb, 4);
{
av_log(avctx, AV_LOG_ERROR,
"Reserved FRAMERATENR %i not handled\n", nr);
- }
+ nr = 5; /* overflow protection */
+ }
if (dr<1)
{
av_log(avctx, AV_LOG_ERROR, "0 is forbidden for FRAMERATEDR\n");
- }
+ return -1;
+ }
if (dr>2)
{
av_log(avctx, AV_LOG_ERROR,
"Reserved FRAMERATEDR %i not handled\n", dr);
+ dr = 2; /* overflow protection */
}
- avctx->frame_rate_base = fps_nr[dr];
- avctx->frame_rate = fps_nr[nr];
+ avctx->time_base.num = fps_nr[dr - 1];
+ avctx->time_base.den = fps_nr[nr - 1];
}
else
{
nr = get_bits(gb, 16);
// 0.03125->2048Hz / 0.03125Hz
- avctx->frame_rate = 1000000;
- avctx->frame_rate_base = 31250*(1+nr);
+ avctx->time_base.den = 1000000;
+ avctx->time_base.num = 31250*(1+nr);
}
}
+ /* 6.1.9, p25 */
if ( get_bits(gb, 1) /* color_format_flag */)
{
//Chromacity coordinates of color primaries
v->color_prim = get_bits(gb, 8);
if (v->color_prim<1)
{
- av_log(avctx, AV_LOG_ERROR, "0 for COLOR_PRIM is reserved\n");
+ av_log(avctx, AV_LOG_ERROR, "0 for COLOR_PRIM is forbidden\n");
return -1;
}
if (v->color_prim == 3 || v->color_prim>6)
//Opto-electronic transfer characteristics
v->transfer_char = get_bits(gb, 8);
+ if (v->transfer_char < 1)
+ {
+ av_log(avctx, AV_LOG_ERROR, "0 for TRAMSFER_CHAR is forbidden\n");
+ return -1;
+ }
if (v->transfer_char == 3 || v->transfer_char>8)
{
av_log(avctx, AV_LOG_DEBUG, "Reserved TRANSFERT_CHAR %i found\n",
//Matrix coefficient for primariev->YCbCr
v->matrix_coef = get_bits(gb, 8);
- if (v->matrix_coef < 1) return -1; //forbidden
- if ((v->matrix_coef>3 && v->matrix_coef<6) || v->matrix_coef>7)
+ if (v->matrix_coef < 1)
+ {
+ av_log(avctx, AV_LOG_ERROR, "0 for MATRIX_COEF is forbidden\n");
+ return -1;
+ }
+ if ((v->matrix_coef > 2 && v->matrix_coef < 6) || v->matrix_coef > 7)
{
av_log(avctx, AV_LOG_DEBUG, "Reserved MATRIX_COEF %i found\n",
v->color_prim);
if (decode_hrd(v, gb) < 0) return -1;
}
+ /*reset scaling ranges, 6.2.2 & 6.2.3, p33*/
+ v->range_mapy_flag = 0;
+ v->range_mapuv_flag = 0;
+
av_log(avctx, AV_LOG_DEBUG, "Advanced profile not supported yet\n");
return -1;
}
#endif
+/**
+ * Decode Simple/Main Profiles sequence header
+ * @see Figure 7-8, p16-17
+ * @param avctx Codec context
+ * @param gb GetBit context initialized from Codec context extra_data
+ * @return Status
+ */
static int decode_sequence_header(AVCodecContext *avctx, GetBitContext *gb)
{
VC9Context *v = avctx->priv_data;
+ av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
v->profile = get_bits(gb, 2);
- av_log(avctx, AV_LOG_DEBUG, "Profile: %i\n", v->profile);
+ if (v->profile == 2)
+ {
+ av_log(avctx, AV_LOG_ERROR, "Profile value 2 is forbidden\n");
+ return -1;
+ }
#if HAS_ADVANCED_PROFILE
- if (v->profile > PROFILE_MAIN)
+ if (v->profile == PROFILE_ADVANCED)
{
v->level = get_bits(gb, 3);
+ if(v->level >= 5)
+ {
+ av_log(avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
+ }
v->chromaformat = get_bits(gb, 2);
if (v->chromaformat != 1)
{
{
av_log(avctx, AV_LOG_ERROR,
"Reserved RES_SM=%i is forbidden\n", v->res_sm);
- //return -1;
+ return -1;
}
}
v->frmrtq_postproc = get_bits(gb, 3); //common
// (bitrate-32kbps)/64kbps
v->bitrtq_postproc = get_bits(gb, 5); //common
- v->loopfilter = get_bits(gb, 1); //common
+ v->s.loop_filter = get_bits(gb, 1); //common
+ if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
+ {
+ av_log(avctx, AV_LOG_ERROR,
+ "LOOPFILTER shell not be enabled in simple profile\n");
+ }
#if HAS_ADVANCED_PROFILE
- if (v->profile <= PROFILE_MAIN)
+ if (v->profile < PROFILE_ADVANCED)
#endif
{
v->res_x8 = get_bits(gb, 1); //reserved
{
av_log(avctx, AV_LOG_ERROR,
"1 for reserved RES_X8 is forbidden\n");
- return -1;
+ //return -1;
}
v->multires = get_bits(gb, 1);
v->res_fasttx = get_bits(gb, 1);
}
v->dquant = get_bits(gb, 2); //common
v->vstransform = get_bits(gb, 1); //common
-
+
#if HAS_ADVANCED_PROFILE
- if (v->profile <= PROFILE_MAIN)
+ if (v->profile < PROFILE_ADVANCED)
#endif
{
v->res_transtab = get_bits(gb, 1);
v->overlap = get_bits(gb, 1); //common
#if HAS_ADVANCED_PROFILE
- if (v->profile <= PROFILE_MAIN)
+ if (v->profile < PROFILE_ADVANCED)
#endif
{
- v->syncmarker = get_bits(gb, 1);
+ v->s.resync_marker = get_bits(gb, 1);
v->rangered = get_bits(gb, 1);
+ if (v->rangered && v->profile == PROFILE_SIMPLE)
+ {
+ av_log(avctx, AV_LOG_DEBUG,
+ "RANGERED should be set to 0 in simple profile\n");
+ }
}
- avctx->max_b_frames = get_bits(gb, 3); //common
+ v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
v->quantizer_mode = get_bits(gb, 2); //common
#if HAS_ADVANCED_PROFILE
- if (v->profile <= PROFILE_MAIN)
+ if (v->profile < PROFILE_ADVANCED)
#endif
{
v->finterpflag = get_bits(gb, 1); //common
"Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
"DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
- v->loopfilter, v->multires, v->fastuvmc, v->extended_mv,
- v->rangered, v->vstransform, v->overlap, v->syncmarker,
+ v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
+ v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
v->dquant, v->quantizer_mode, avctx->max_b_frames
);
+ return 0;
#endif
}
#if HAS_ADVANCED_PROFILE
- else decode_advanced_sequence_header(avctx, gb);
+ else return decode_advanced_sequence_header(avctx, gb);
#endif
}
#if HAS_ADVANCED_PROFILE
-/*****************************************************************************/
-/* Entry point decoding (Advanced Profile) */
-/*****************************************************************************/
+/** Entry point decoding (Advanced Profile)
+ * @param avctx Codec context
+ * @param gb GetBit context initialized from avctx->extra_data
+ * @return Status
+ */
static int advanced_entry_point_process(AVCodecContext *avctx, GetBitContext *gb)
{
VC9Context *v = avctx->priv_data;
- int range_mapy_flag, range_mapuv_flag, i;
+ int i;
if (v->profile != PROFILE_ADVANCED)
{
av_log(avctx, AV_LOG_ERROR,
{
//Update buffer fullness
av_log(avctx, AV_LOG_DEBUG, "Buffer fullness update\n");
+ assert(v->hrd_num_leaky_buckets > 0);
for (i=0; i<v->hrd_num_leaky_buckets; i++)
- skip_bits(gb, 8);
+ v->hrd_fullness[i] = get_bits(gb, 8);
}
- if ((range_mapy_flag = get_bits(gb, 1)))
+ if ((v->range_mapy_flag = get_bits(gb, 1)))
{
//RANGE_MAPY
av_log(avctx, AV_LOG_DEBUG, "RANGE_MAPY\n");
- skip_bits(gb, 3);
+ v->range_mapy = get_bits(gb, 3);
}
- if ((range_mapuv_flag = get_bits(gb, 1)))
+ if ((v->range_mapuv_flag = get_bits(gb, 1)))
{
//RANGE_MAPUV
av_log(avctx, AV_LOG_DEBUG, "RANGE_MAPUV\n");
- skip_bits(gb, 3);
+ v->range_mapuv = get_bits(gb, 3);
}
if (v->panscanflag)
{
}
#endif
-/******************************************************************************/
-/* Bitplane decoding */
-/******************************************************************************/
+/***********************************************************************/
+/**
+ * @defgroup bitplane VC9 Bitplane decoding
+ * @see 8.7, p56
+ * @{
+ */
+
+/** @addtogroup bitplane
+ * Imode types
+ * @{
+ */
#define IMODE_RAW 0
#define IMODE_NORM2 1
#define IMODE_DIFF2 2
#define IMODE_DIFF6 4
#define IMODE_ROWSKIP 5
#define IMODE_COLSKIP 6
+/** @} */ //imode defines
+
+/** Allocate the buffer from a bitplane, given its dimensions
+ * @param bp Bitplane which buffer is to allocate
+ * @param[in] width Width of the buffer
+ * @param[in] height Height of the buffer
+ * @return Status
+ * @todo TODO: Take into account stride
+ * @todo TODO: Allow use of external buffers ?
+ */
+int alloc_bitplane(BitPlane *bp, int width, int height)
+{
+ if (!bp || bp->width<0 || bp->height<0) return -1;
+ bp->data = (uint8_t*)av_malloc(width*height);
+ if (!bp->data) return -1;
+ bp->width = bp->stride = width;
+ bp->height = height;
+ return 0;
+}
+
+/** Free the bitplane's buffer
+ * @param bp Bitplane which buffer is to free
+ */
+void free_bitplane(BitPlane *bp)
+{
+ bp->width = bp->stride = bp->height = 0;
+ if (bp->data) av_freep(&bp->data);
+}
+
+/** Decode rows by checking if they are skipped
+ * @param plane Buffer to store decoded bits
+ * @param[in] width Width of this buffer
+ * @param[in] height Height of this buffer
+ * @param[in] stride of this buffer
+ */
+static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
+ int x, y;
+
+ for (y=0; y<height; y++){
+ if (!get_bits(gb, 1)) //rowskip
+ memset(plane, 0, width);
+ else
+ for (x=0; x<width; x++)
+ plane[x] = get_bits(gb, 1);
+ plane += stride;
+ }
+}
+
+/** Decode columns by checking if they are skipped
+ * @param plane Buffer to store decoded bits
+ * @param[in] width Width of this buffer
+ * @param[in] height Height of this buffer
+ * @param[in] stride of this buffer
+ * @fixme FIXME: Optimize
+ */
+static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
+ int x, y;
+
+ for (x=0; x<width; x++){
+ if (!get_bits(gb, 1)) //colskip
+ for (y=0; y<height; y++)
+ plane[y*stride] = 0;
+ else
+ for (y=0; y<height; y++)
+ plane[y*stride] = get_bits(gb, 1);
+ plane ++;
+ }
+}
-//FIXME optimize
-static int bitplane_decoding(uint8_t* plane, int width, int height, VC9Context *v)
+/** Decode a bitplane's bits
+ * @param bp Bitplane where to store the decode bits
+ * @param v VC9 context for bit reading and logging
+ * @return Status
+ * @fixme FIXME: Optimize
+ * @todo TODO: Decide if a struct is needed
+ */
+static int bitplane_decoding(BitPlane *bp, VC9Context *v)
{
- int imode, x, y, code;
- uint8_t invert, *planep = plane;
+ GetBitContext *gb = &v->s.gb;
- invert = get_bits(&v->gb, 1);
- imode = get_vlc2(&v->gb, vc9_imode_vlc.table, VC9_IMODE_VLC_BITS, 2);
- av_log(v->avctx, AV_LOG_DEBUG, "Bitplane: imode=%i, invert=%i\n",
- imode, invert);
+ int imode, x, y, code, use_vertical_tile, tile_w, tile_h, offset;
+ uint8_t invert, *planep = bp->data;
+ invert = get_bits(gb, 1);
+ imode = get_vlc2(gb, vc9_imode_vlc.table, VC9_IMODE_VLC_BITS, 2);
+
+ bp->is_raw = 0;
switch (imode)
{
case IMODE_RAW:
- for (y=0; y<height; y++)
- {
- for (x=0; x<width; x++)
- planep[x] = (-get_bits(&v->gb, 1)); //-1=0xFF
- planep += width;
- }
- break;
+ //Data is actually read in the MB layer (same for all tests == "raw")
+ bp->is_raw = 1; //invert ignored
+ return invert;
case IMODE_DIFF2:
case IMODE_NORM2:
- if ((height*width) & 1) *(++planep) = get_bits(&v->gb, 1);
- code = get_vlc2(&v->gb, vc9_norm2_vlc.table, VC9_NORM2_VLC_BITS, 2);
- *(++planep) = code&1; //lsb => left
- *(++planep) = code&2; //msb => right - this is a bitplane, so only !0 matters
- break;
- case IMODE_DIFF6:
- case IMODE_NORM6:
- av_log(v->avctx, AV_LOG_ERROR, "Imode using Norm-6 isn't supported\n");
- return -1;
- break;
- case IMODE_ROWSKIP:
- for (y=0; y<height; y++)
+ if ((bp->height*bp->width) & 1)
{
- if (get_bits(&v->gb, 1)) //rowskip
- memset(planep, 0, width);
- else for (x=0; x<width; x++) planep[x] = get_bits(&v->gb, 1);
- planep += width;
+ *(++planep) = get_bits(gb, 1);
+ offset = x = 1;
}
- break;
- case IMODE_COLSKIP: //Teh ugly
- for (x=0; x<width; x++)
+ else offset = x = 0;
+
+ for (y=0; y<bp->height; y++)
{
- planep = plane;
- if (get_bits(&v->gb, 1)) //colskip
+ for(; x<bp->width; x+=2)
{
- for (y=0; y<height; y++)
- {
- planep[x] = 0;
- planep += width;
- }
+ code = get_vlc2(gb, vc9_norm2_vlc.table, VC9_NORM2_VLC_BITS, 2);
+ *(++planep) = code&1; //lsb => left
+ *(++planep) = (code>>1)&1; //msb => right
+ }
+ planep += bp->stride-bp->width;
+ if ((bp->width-offset)&1) //Odd number previously processed
+ {
+ code = get_vlc2(gb, vc9_norm2_vlc.table, VC9_NORM2_VLC_BITS, 2);
+ *planep = code&1;
+ planep += bp->stride-bp->width;
+ *planep = (code>>1)&1; //msb => right
+ offset = x = 1;
}
else
{
- for (y=0; y<height; y++)
- {
- planep[x] = get_bits(&v->gb, 1);
- planep += width;
+ offset = x = 0;
+ planep += bp->stride-bp->width;
+ }
+ }
+ break;
+ case IMODE_DIFF6:
+ case IMODE_NORM6:
+ use_vertical_tile= bp->height%3==0 && bp->width%3!=0;
+ tile_w= use_vertical_tile ? 2 : 3;
+ tile_h= use_vertical_tile ? 3 : 2;
+
+ for(y= bp->height%tile_h; y< bp->height; y+=tile_h){
+ for(x= bp->width%tile_w; x< bp->width; x+=tile_w){
+ code = get_vlc2(gb, vc9_norm6_vlc.table, VC9_NORM6_VLC_BITS, 2);
+ if(code<0){
+ av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
+ return -1;
+ }
+ //FIXME following is a pure guess and probably wrong
+ //FIXME A bitplane (0 | !0), so could the shifts be avoided ?
+ planep[x + 0*bp->stride]= (code>>0)&1;
+ planep[x + 1 + 0*bp->stride]= (code>>1)&1;
+ //FIXME Does branch prediction help here?
+ if(use_vertical_tile){
+ planep[x + 0 + 1*bp->stride]= (code>>2)&1;
+ planep[x + 1 + 1*bp->stride]= (code>>3)&1;
+ planep[x + 0 + 2*bp->stride]= (code>>4)&1;
+ planep[x + 1 + 2*bp->stride]= (code>>5)&1;
+ }else{
+ planep[x + 2 + 0*bp->stride]= (code>>2)&1;
+ planep[x + 0 + 1*bp->stride]= (code>>3)&1;
+ planep[x + 1 + 1*bp->stride]= (code>>4)&1;
+ planep[x + 2 + 1*bp->stride]= (code>>5)&1;
}
}
}
+
+ x= bp->width % tile_w;
+ decode_colskip(bp->data , x, bp->height , bp->stride, &v->s.gb);
+ decode_rowskip(bp->data+x, bp->width - x, bp->height % tile_h, bp->stride, &v->s.gb);
+
+ break;
+ case IMODE_ROWSKIP:
+ decode_rowskip(bp->data, bp->width, bp->height, bp->stride, &v->s.gb);
+ break;
+ case IMODE_COLSKIP:
+ decode_colskip(bp->data, bp->width, bp->height, bp->stride, &v->s.gb);
break;
default: break;
}
/* Applying diff operator */
- if (imode == IMODE_DIFF2 || imode == IMODE_DIFF2)
+ if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
{
- /* And what about j=0 !? */
- planep = plane + width;
- memset(plane, invert, width);
- for (y=0; y<height; y++)
+ planep = bp->data;
+ planep[0] ^= invert;
+ for (x=1; x<bp->width; x++)
+ planep[x] ^= planep[x-1];
+ for (y=1; y<bp->height; y++)
{
- planep[0] = planep[-width];
- for (x=1; x<width; x++)
+ planep += bp->stride;
+ planep[0] ^= planep[-bp->stride];
+ for (x=1; x<bp->width; x++)
{
- if (planep[x-1] != planep[-width]) planep[x] = invert;
- else planep[x] = planep[x-1];
+ if (planep[x-1] != planep[x-bp->stride]) planep[x] ^= invert;
+ else planep[x] ^= planep[x-1];
}
- planep += width;
}
}
else if (invert)
{
- planep = plane;
- for (x=0; x<width*height; x++) planep[x] = !planep[x];
+ planep = bp->data;
+ for (x=0; x<bp->width*bp->height; x++) planep[x] = !planep[x]; //FIXME stride
}
- return 0;
+ return (imode<<1) + invert;
}
+/** @} */ //Bitplane group
-/*****************************************************************************/
-/* VOP Dquant decoding */
-/*****************************************************************************/
+/***********************************************************************/
+/** VOP Dquant decoding
+ * @param v VC9 Context
+ */
static int vop_dquant_decoding(VC9Context *v)
{
+ GetBitContext *gb = &v->s.gb;
int pqdiff;
//variable size
if (v->dquant == 2)
{
- pqdiff = get_bits(&v->gb, 3);
- if (pqdiff == 7) v->altpq = get_bits(&v->gb, 5);
+ pqdiff = get_bits(gb, 3);
+ if (pqdiff == 7) v->altpq = get_bits(gb, 5);
else v->altpq = v->pq + pqdiff + 1;
}
else
{
- v->dquantfrm = get_bits(&v->gb, 1);
+ v->dquantfrm = get_bits(gb, 1);
if ( v->dquantfrm )
{
- v->dqprofile = get_bits(&v->gb, 2);
+ v->dqprofile = get_bits(gb, 2);
switch (v->dqprofile)
{
case DQPROFILE_SINGLE_EDGE:
case DQPROFILE_DOUBLE_EDGES:
- v->dqsbedge = get_bits(&v->gb, 2);
+ v->dqsbedge = get_bits(gb, 2);
break;
case DQPROFILE_ALL_MBS:
- v->dqbilevel = get_bits(&v->gb, 1);
+ v->dqbilevel = get_bits(gb, 1);
default: break; //Forbidden ?
}
if (!v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
{
- pqdiff = get_bits(&v->gb, 3);
- if (pqdiff == 7) v->altpq = get_bits(&v->gb, 5);
+ pqdiff = get_bits(gb, 3);
+ if (pqdiff == 7) v->altpq = get_bits(gb, 5);
else v->altpq = v->pq + pqdiff + 1;
}
}
return 0;
}
-/*****************************************************************************/
-/* All Profiles picture header decoding specific functions */
-/* Only pro/epilog differs between Simple/Main and Advanced => check caller */
-/*****************************************************************************/
-static int decode_bi_picture_header(VC9Context *v)
-{
- /* Very particular case:
- - for S/M Profiles, decode_b_picture_header reads BF,
- bfraction then determine if this is a BI frame, calling
- this function afterwards
- - for A Profile, PTYPE already tells so and we can go
- directly there
- */
- int pqindex;
-
- /* Read the quantization stuff */
- pqindex = get_bits(&v->gb, 5);
- if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
- v->pq = pquant_table[0][pqindex];
- else
- {
- v->pq = pquant_table[v->quantizer_mode-1][pqindex];
- }
- if (pqindex < 9) v->halfpq = get_bits(&v->gb, 1);
- if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
- v->pquantizer = get_bits(&v->gb, 1);
-
- /* Read the MV type/mode */
- if (v->extended_mv == 1)
- v->mvrange = get_prefix(&v->gb, 0, 3);
-
- /* FIXME: what table are used in that case ? */
- v->mv_diff_vlc = &vc9_mv_diff_vlc[0];
- v->cbpcy_vlc = &vc9_cbpcy_i_vlc;
-
- av_log(v->avctx, AV_LOG_DEBUG, "B frame, QP=%i\n", v->pq);
- av_log(v->avctx, AV_LOG_ERROR, "BI_TYPE not supported yet\n");
- /* Epilog should be done in caller */
- return -1;
-}
-
-static int decode_b_picture_header(VC9Context *v)
+/***********************************************************************/
+/**
+ * @defgroup all_frame_hdr All VC9 profiles frame header
+ * @brief Part of the frame header decoding from all profiles
+ * @warning Only pro/epilog differs between Simple/Main and Advanced => check caller
+ * @{
+ */
+/** B and BI frame header decoding, primary part
+ * @see Tables 11+12, p62-65
+ * @param v VC9 context
+ * @return Status
+ * @warning Also handles BI frames
+ */
+static int decode_b_picture_primary_header(VC9Context *v)
{
+ GetBitContext *gb = &v->s.gb;
int pqindex;
/* Prolog common to all frametypes should be done in caller */
if (v->profile == PROFILE_SIMPLE)
{
- av_log(v, AV_LOG_ERROR, "Found a B frame while in Simple Profile!\n");
- return FRAME_SKIPED;
+ av_log(v->s.avctx, AV_LOG_ERROR, "Found a B frame while in Simple Profile!\n");
+ return FRAME_SKIPPED;
}
-
- v->bfraction = vc9_bfraction_lut[get_vlc2(&v->gb, vc9_bfraction_vlc.table,
+ v->bfraction = vc9_bfraction_lut[get_vlc2(gb, vc9_bfraction_vlc.table,
VC9_BFRACTION_VLC_BITS, 2)];
if (v->bfraction < -1)
{
- av_log(v, AV_LOG_ERROR, "Invalid BFRaction\n");
- return FRAME_SKIPED;
+ av_log(v->s.avctx, AV_LOG_ERROR, "Invalid BFRaction\n");
+ return FRAME_SKIPPED;
}
else if (!v->bfraction)
{
/* We actually have a BI frame */
- return decode_bi_picture_header(v);
+ v->s.pict_type = BI_TYPE;
+ v->buffer_fullness = get_bits(gb, 7);
}
/* Read the quantization stuff */
- pqindex = get_bits(&v->gb, 5);
+ pqindex = get_bits(gb, 5);
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
v->pq = pquant_table[0][pqindex];
else
{
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
}
- if (pqindex < 9) v->halfpq = get_bits(&v->gb, 1);
+ if (pqindex < 9) v->halfpq = get_bits(gb, 1);
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
- v->pquantizer = get_bits(&v->gb, 1);
-
- /* Read the MV type/mode */
- if (v->extended_mv == 1)
- v->mvrange = get_prefix(&v->gb, 0, 3);
- v->mv_mode = get_bits(&v->gb, 1);
- if (v->pq < 13)
+ v->pquantizer = get_bits(gb, 1);
+#if HAS_ADVANCED_PROFILE
+ if (v->profile == PROFILE_ADVANCED)
{
- if (!v->mv_mode)
- {
- v->mv_mode = get_bits(&v->gb, 2);
- if (v->mv_mode)
- av_log(v, AV_LOG_ERROR,
- "mv_mode for lowquant B frame was %i\n", v->mv_mode);
- }
+ if (v->postprocflag) v->postproc = get_bits(gb, 2);
+ if (v->extended_mv == 1 && v->s.pict_type != BI_TYPE)
+ v->mvrange = get_prefix(gb, 0, 3);
}
+#endif
else
{
- if (!v->mv_mode)
+ if (v->extended_mv == 1)
+ v->mvrange = get_prefix(gb, 0, 3);
+ }
+ /* Read the MV mode */
+ if (v->s.pict_type != BI_TYPE)
+ {
+ v->mv_mode = get_bits(gb, 1);
+ if (v->pq < 13)
+ {
+ if (!v->mv_mode)
+ {
+ v->mv_mode = get_bits(gb, 2);
+ if (v->mv_mode)
+ av_log(v->s.avctx, AV_LOG_ERROR,
+ "mv_mode for lowquant B frame was %i\n", v->mv_mode);
+ }
+ }
+ else
{
- if (get_bits(&v->gb, 1))
- av_log(v, AV_LOG_ERROR,
- "mv_mode for highquant B frame was %i\n", v->mv_mode);
+ if (!v->mv_mode)
+ {
+ if (get_bits(gb, 1))
+ av_log(v->s.avctx, AV_LOG_ERROR,
+ "mv_mode for highquant B frame was %i\n", v->mv_mode);
+ }
+ v->mv_mode = 1-v->mv_mode; //To match (pq < 13) mapping
}
- v->mv_mode = 1-v->mv_mode; //To match (pq < 13) mapping
}
+ return 0;
+}
+
+/** B and BI frame header decoding, secondary part
+ * @see Tables 11+12, p62-65
+ * @param v VC9 context
+ * @return Status
+ * @warning Also handles BI frames
+ * @warning To call once all MB arrays are allocated
+ * @todo Support Advanced Profile headers
+ */
+static int decode_b_picture_secondary_header(VC9Context *v)
+{
+ GetBitContext *gb = &v->s.gb;
+ int status;
+
+ status = bitplane_decoding(&v->skip_mb_plane, v);
+ if (status < 0) return -1;
+#if TRACE
if (v->mv_mode == MV_PMODE_MIXED_MV)
{
- if (bitplane_decoding( v->mv_type_mb_plane, v->width_mb,
- v->height_mb, v)<0)
+ status = bitplane_decoding(&v->mv_type_mb_plane, v);
+ if (status < 0)
return -1;
+#if TRACE
+ av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
+ "Imode: %i, Invert: %i\n", status>>1, status&1);
+#endif
}
//bitplane
- bitplane_decoding(v->direct_mb_plane, v->width_mb, v->height_mb, v);
- bitplane_decoding(v->skip_mb_plane, v->width_mb, v->height_mb, v);
+ status = bitplane_decoding(&v->direct_mb_plane, v);
+ if (status < 0) return -1;
+#if TRACE
+ av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct plane encoding: "
+ "Imode: %i, Invert: %i\n", status>>1, status&1);
+#endif
+
+ av_log(v->s.avctx, AV_LOG_DEBUG, "Skip MB plane encoding: "
+ "Imode: %i, Invert: %i\n", status>>1, status&1);
+#endif
/* FIXME: what is actually chosen for B frames ? */
- v->mv_diff_vlc = &vc9_mv_diff_vlc[get_bits(&v->gb, 2)];
- v->cbpcy_vlc = &vc9_cbpcy_p_vlc[get_bits(&v->gb, 2)];
+ v->s.mv_table_index = get_bits(gb, 2); //but using vc9_ tables
+ v->cbpcy_vlc = &vc9_cbpcy_p_vlc[get_bits(gb, 2)];
+
if (v->dquant)
{
vop_dquant_decoding(v);
if (v->vstransform)
{
- v->ttmbf = get_bits(&v->gb, 1);
+ v->ttmbf = get_bits(gb, 1);
if (v->ttmbf)
{
- v->ttfrm = get_bits(&v->gb, 2);
- av_log(v, AV_LOG_INFO, "Transform used: %ix%i\n",
+ v->ttfrm = get_bits(gb, 2);
+ av_log(v->s.avctx, AV_LOG_INFO, "Transform used: %ix%i\n",
(v->ttfrm & 2) ? 4 : 8, (v->ttfrm & 1) ? 4 : 8);
}
}
- /* Epilog should be done in caller */
+ /* Epilog (AC/DC syntax) should be done in caller */
return 0;
}
-static int decode_i_picture_header(VC9Context *v)
+/** I frame header decoding, primary part
+ * @see Tables 5+7, p53-54 and 55-57
+ * @param v VC9 context
+ * @return Status
+ * @todo Support Advanced Profile headers
+ */
+static int decode_i_picture_primary_header(VC9Context *v)
{
- int pqindex, status = 0, ac_pred, condover;
+ GetBitContext *gb = &v->s.gb;
+ int pqindex;
/* Prolog common to all frametypes should be done in caller */
//BF = Buffer Fullness
- if (v->profile <= PROFILE_MAIN && get_bits(&v->gb, 7))
+ if (v->profile < PROFILE_ADVANCED && get_bits(gb, 7))
{
- av_log(v, AV_LOG_DEBUG, "I BufferFullness not 0\n");
+ av_log(v->s.avctx, AV_LOG_DEBUG, "I BufferFullness not 0\n");
}
/* Quantizer stuff */
- pqindex = get_bits(&v->gb, 5);
+ pqindex = get_bits(gb, 5);
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
v->pq = pquant_table[0][pqindex];
else
{
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
}
- if (pqindex < 9) v->halfpq = get_bits(&v->gb, 1);
+ if (pqindex < 9) v->halfpq = get_bits(gb, 1);
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
- v->pquantizer = get_bits(&v->gb, 1);
- av_log(v->avctx, AV_LOG_DEBUG, "I frame: QP=%i (+%i/2)\n",
+ v->pquantizer = get_bits(gb, 1);
+ av_log(v->s.avctx, AV_LOG_DEBUG, "I frame: QP=%i (+%i/2)\n",
v->pq, v->halfpq);
+ return 0;
+}
+
+/** I frame header decoding, secondary part
+ * @param v VC9 context
+ * @return Status
+ * @warning Not called in A/S/C profiles, it seems
+ * @todo Support Advanced Profile headers
+ */
+static int decode_i_picture_secondary_header(VC9Context *v)
+{
#if HAS_ADVANCED_PROFILE
- if (v->profile <= PROFILE_MAIN)
-#endif
- {
- if (v->extended_mv) v->mvrange = get_prefix(&v->gb, 0, 3);
- if (v->multires) v->respic = get_bits(&v->gb, 2);
- }
-#if HAS_ADVANCED_PROFILE
- else
+ int status;
+ if (v->profile == PROFILE_ADVANCED)
{
- ac_pred = get_bits(&v->gb, 1);
- if (v->postprocflag) v->postproc = get_bits(&v->gb, 1);
+ v->s.ac_pred = get_bits(&v->s.gb, 1);
+ if (v->postprocflag) v->postproc = get_bits(&v->s.gb, 1);
/* 7.1.1.34 + 8.5.2 */
if (v->overlap && v->pq<9)
{
- condover = get_bits(&v->gb, 1);
- if (condover)
+ v->condover = get_bits(&v->s.gb, 1);
+ if (v->condover)
{
- condover = 2+get_bits(&v->gb, 1);
- if (condover == 3)
- status = bitplane_decoding(v->over_flags_plane,
- v->width_mb, v->height_mb, v);
+ v->condover = 2+get_bits(&v->s.gb, 1);
+ if (v->condover == 3)
+ {
+ status = bitplane_decoding(&v->over_flags_plane, v);
+ if (status < 0) return -1;
+# if TRACE
+ av_log(v->s.avctx, AV_LOG_DEBUG, "Overflags plane encoding: "
+ "Imode: %i, Invert: %i\n", status>>1, status&1);
+# endif
+ }
}
}
}
#endif
- /* Epilog should be done in caller */
- return status;
+ /* Epilog (AC/DC syntax) should be done in caller */
+ return 0;
}
-static int decode_p_picture_header(VC9Context *v)
+/** P frame header decoding, primary part
+ * @see Tables 5+7, p53-54 and 55-57
+ * @param v VC9 context
+ * @todo Support Advanced Profile headers
+ * @return Status
+ */
+static int decode_p_picture_primary_header(VC9Context *v)
{
/* INTERFRM, FRMCNT, RANGEREDFRM read in caller */
+ GetBitContext *gb = &v->s.gb;
int lowquant, pqindex;
- pqindex = get_bits(&v->gb, 5);
+ pqindex = get_bits(gb, 5);
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
v->pq = pquant_table[0][pqindex];
else
{
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
}
- if (pqindex < 9) v->halfpq = get_bits(&v->gb, 1);
+ if (pqindex < 9) v->halfpq = get_bits(gb, 1);
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
- v->pquantizer = get_bits(&v->gb, 1);
- av_log(v->avctx, AV_LOG_DEBUG, "P Frame: QP=%i (+%i/2)\n",
+ v->pquantizer = get_bits(gb, 1);
+ av_log(v->s.avctx, AV_LOG_DEBUG, "P Frame: QP=%i (+%i/2)\n",
v->pq, v->halfpq);
- if (v->extended_mv == 1) v->mvrange = get_prefix(&v->gb, 0, 3);
+ if (v->extended_mv == 1) v->mvrange = get_prefix(gb, 0, 3);
#if HAS_ADVANCED_PROFILE
- if (v->profile > PROFILE_MAIN)
+ if (v->profile == PROFILE_ADVANCED)
{
- if (v->postprocflag) v->postproc = get_bits(&v->gb, 1);
+ if (v->postprocflag) v->postproc = get_bits(gb, 1);
}
else
#endif
- if (v->multires) v->respic = get_bits(&v->gb, 2);
+ if (v->multires) v->respic = get_bits(gb, 2);
lowquant = (v->pquantizer>12) ? 0 : 1;
- v->mv_mode = mv_pmode_table[lowquant][get_prefix(&v->gb, 1, 4)];
+ v->mv_mode = mv_pmode_table[lowquant][get_prefix(gb, 1, 4)];
if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
{
- v->mv_mode2 = mv_pmode_table[lowquant][get_prefix(&v->gb, 1, 3)];
- v->lumscale = get_bits(&v->gb, 6);
- v->lumshift = get_bits(&v->gb, 6);
+ v->mv_mode2 = mv_pmode_table[lowquant][get_prefix(gb, 1, 3)];
+ v->lumscale = get_bits(gb, 6);
+ v->lumshift = get_bits(gb, 6);
}
+ return 0;
+}
+/** P frame header decoding, secondary part
+ * @see Tables 5+7, p53-54 and 55-57
+ * @param v VC9 context
+ * @warning To call once all MB arrays are allocated
+ * @return Status
+ */
+static int decode_p_picture_secondary_header(VC9Context *v)
+{
+ GetBitContext *gb = &v->s.gb;
+ int status = 0;
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
v->mv_mode2 == MV_PMODE_MIXED_MV)
|| v->mv_mode == MV_PMODE_MIXED_MV)
{
- if (bitplane_decoding(v->mv_type_mb_plane, v->width_mb,
- v->height_mb, v) < 0)
- return -1;
+ status = bitplane_decoding(&v->mv_type_mb_plane, v);
+ if (status < 0) return -1;
+#if TRACE
+ av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
+ "Imode: %i, Invert: %i\n", status>>1, status&1);
+#endif
}
- if (bitplane_decoding(v->skip_mb_plane, v->width_mb,
- v->height_mb, v) < 0)
- return -1;
+ status = bitplane_decoding(&v->skip_mb_plane, v);
+ if (status < 0) return -1;
+#if TRACE
+ av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
+ "Imode: %i, Invert: %i\n", status>>1, status&1);
+#endif
/* Hopefully this is correct for P frames */
- v->mv_diff_vlc = &vc9_mv_diff_vlc[get_bits(&v->gb, 2)];
- v->cbpcy_vlc = &vc9_cbpcy_p_vlc[get_bits(&v->gb, 2)];
+ v->s.mv_table_index =get_bits(gb, 2); //but using vc9_ tables
+ v->cbpcy_vlc = &vc9_cbpcy_p_vlc[get_bits(gb, 2)];
if (v->dquant)
{
- av_log(v->avctx, AV_LOG_INFO, "VOP DQuant info\n");
+ av_log(v->s.avctx, AV_LOG_INFO, "VOP DQuant info\n");
vop_dquant_decoding(v);
}
+ v->ttfrm = 0; //FIXME Is that so ?
if (v->vstransform)
{
- v->ttmbf = get_bits(&v->gb, 1);
+ v->ttmbf = get_bits(gb, 1);
if (v->ttmbf)
{
- v->ttfrm = get_bits(&v->gb, 2);
- av_log(v->avctx, AV_LOG_INFO, "Transform used: %ix%i\n",
+ v->ttfrm = get_bits(gb, 2);
+ av_log(v->s.avctx, AV_LOG_INFO, "Transform used: %ix%i\n",
(v->ttfrm & 2) ? 4 : 8, (v->ttfrm & 1) ? 4 : 8);
}
}
- /* Epilog should be done in caller */
+ /* Epilog (AC/DC syntax) should be done in caller */
return 0;
}
+/** @} */ //End of group all_frm_hdr
+
+/***********************************************************************/
+/**
+ * @defgroup std_frame_hdr VC9 Simple/Main Profiles header decoding
+ * @brief Part of the frame header decoding belonging to Simple/Main Profiles
+ * @warning Only pro/epilog differs between Simple/Main and Advanced =>
+ * check caller
+ * @{
+ */
-static int standard_decode_picture_header(VC9Context *v)
+/** Frame header decoding, first part, in Simple and Main profiles
+ * @see Tables 5+7, p53-54 and 55-57
+ * @param v VC9 context
+ * @todo FIXME: RANGEREDFRM element not read if BI frame from Table6, P54
+ * However, 7.1.1.8 says "all frame types, for main profiles"
+ * @return Status
+ */
+static int standard_decode_picture_primary_header(VC9Context *v)
{
+ GetBitContext *gb = &v->s.gb;
int status = 0;
- if (v->finterpflag) v->interpfrm = get_bits(&v->gb, 1);
- skip_bits(&v->gb, 2); //framecnt unused
- if (v->rangered) v->rangeredfrm = get_bits(&v->gb, 1);
- v->pict_type = get_bits(&v->gb, 1);
- if (v->avctx->max_b_frames && !v->pict_type)
+ if (v->finterpflag) v->interpfrm = get_bits(gb, 1);
+ skip_bits(gb, 2); //framecnt unused
+ if (v->rangered) v->rangeredfrm = get_bits(gb, 1);
+ v->s.pict_type = get_bits(gb, 1);
+ if (v->s.avctx->max_b_frames)
{
- if (get_bits(&v->gb, 1)) v->pict_type = I_TYPE;
- else v->pict_type = P_TYPE;
+ if (!v->s.pict_type)
+ {
+ if (get_bits(gb, 1)) v->s.pict_type = I_TYPE;
+ else v->s.pict_type = B_TYPE;
+ }
+ else v->s.pict_type = P_TYPE;
}
- else v->pict_type++; //P_TYPE
+ else v->s.pict_type++;
- switch (v->pict_type)
+ switch (v->s.pict_type)
{
- case I_TYPE: status = decode_i_picture_header(v); break;
- case BI_TYPE: status = decode_b_picture_header(v); break;
- case P_TYPE: status = decode_p_picture_header(v); break;
- case B_TYPE: status = decode_b_picture_header(v); break;
+ case I_TYPE: status = decode_i_picture_primary_header(v); break;
+ case P_TYPE: status = decode_p_picture_primary_header(v); break;
+ case BI_TYPE: //Same as B
+ case B_TYPE: status = decode_b_picture_primary_header(v); break;
}
- if (status == FRAME_SKIPED)
+ if (status == FRAME_SKIPPED)
{
- av_log(v, AV_LOG_INFO, "Skipping frame...\n");
+ av_log(v->s.avctx, AV_LOG_INFO, "Skipping frame...\n");
return status;
}
+ return 0;
+}
+
+/** Frame header decoding, secondary part
+ * @param v VC9 context
+ * @warning To call once all MB arrays are allocated
+ * @return Status
+ */
+static int standard_decode_picture_secondary_header(VC9Context *v)
+{
+ GetBitContext *gb = &v->s.gb;
+ int status = 0;
+
+ switch (v->s.pict_type)
+ {
+ case P_TYPE: status = decode_p_picture_secondary_header(v); break;
+ case B_TYPE: status = decode_b_picture_secondary_header(v); break;
+ case BI_TYPE:
+ case I_TYPE: break; //Nothing needed as it's done in the epilog
+ }
+ if (status < 0) return FRAME_SKIPPED;
- /* AC/DC Syntax */
- v->transacfrm = get_bits(&v->gb, 1);
- if (v->transacfrm) v->transacfrm += get_bits(&v->gb, 1);
- if (v->pict_type == I_TYPE || v->pict_type == BI_TYPE)
+ /* AC Syntax */
+ v->c_ac_table_index = decode012(gb);
+ if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
{
- v->transacfrm2 = get_bits(&v->gb, 1);
- if (v->transacfrm2) v->transacfrm2 += get_bits(&v->gb, 1);
+ v->y_ac_table_index = decode012(gb);
}
- v->transacdctab = get_bits(&v->gb, 1);
-
+ /* DC Syntax */
+ v->s.dc_table_index = decode012(gb);
+
return 0;
}
-
+/** @} */ //End for group std_frame_hdr
#if HAS_ADVANCED_PROFILE
-/******************************************************************************/
-/* Advanced Profile picture header decoding specific functions */
-/******************************************************************************/
-static int advanced_decode_picture_header(VC9Context *v)
+/***********************************************************************/
+/**
+ * @defgroup adv_frame_hdr VC9 Advanced Profile header decoding
+ * @brief Part of the frame header decoding belonging to Advanced Profiles
+ * @warning Only pro/epilog differs between Simple/Main and Advanced =>
+ * check caller
+ * @{
+ */
+/** Frame header decoding, primary part
+ * @param v VC9 context
+ * @return Status
+ */
+static int advanced_decode_picture_primary_header(VC9Context *v)
{
+ GetBitContext *gb = &v->s.gb;
static const int type_table[4] = { P_TYPE, B_TYPE, I_TYPE, BI_TYPE };
- int type, i, ret;
+ int type;
if (v->interlace)
{
- v->fcm = get_bits(&v->gb, 1);
- if (v->fcm) v->fcm = 2+get_bits(&v->gb, 1);
+ v->fcm = get_bits(gb, 1);
+ if (v->fcm) v->fcm = 2+get_bits(gb, 1);
}
- type = get_prefix(&v->gb, 0, 4);
- if (type > 4 || type < 0) return FRAME_SKIPED;
- v->pict_type = type_table[type];
- av_log(v->avctx, AV_LOG_INFO, "AP Frame Type: %i\n", v->pict_type);
+ type = get_prefix(gb, 0, 4);
+ if (type > 4 || type < 0) return FRAME_SKIPPED;
+ v->s.pict_type = type_table[type];
+ av_log(v->s.avctx, AV_LOG_INFO, "AP Frame Type: %i\n", v->s.pict_type);
- if (v->tfcntrflag) v->tfcntr = get_bits(&v->gb, 8);
+ if (v->tfcntrflag) v->tfcntr = get_bits(gb, 8);
if (v->broadcast)
{
- if (!v->interlace) v->rptfrm = get_bits(&v->gb, 2);
+ if (!v->interlace) v->rptfrm = get_bits(gb, 2);
else
{
- v->tff = get_bits(&v->gb, 1);
- v->rff = get_bits(&v->gb, 1);
+ v->tff = get_bits(gb, 1);
+ v->rff = get_bits(gb, 1);
}
}
#if 0
for (i=0; i<v->numpanscanwin; i++)
{
- v->topleftx[i] = get_bits(&v->gb, 16);
- v->toplefty[i] = get_bits(&v->gb, 16);
- v->bottomrightx[i] = get_bits(&v->gb, 16);
- v->bottomrighty[i] = get_bits(&v->gb, 16);
+ v->topleftx[i] = get_bits(gb, 16);
+ v->toplefty[i] = get_bits(gb, 16);
+ v->bottomrightx[i] = get_bits(gb, 16);
+ v->bottomrighty[i] = get_bits(gb, 16);
}
#else
- skip_bits(&v->gb, 16*4*v->numpanscanwin);
+ skip_bits(gb, 16*4*v->numpanscanwin);
#endif
}
- v->rndctrl = get_bits(&v->gb, 1);
- v->uvsamp = get_bits(&v->gb, 1);
- if (v->finterpflag == 1) v->interpfrm = get_bits(&v->gb, 1);
+ v->s.no_rounding = !get_bits(gb, 1);
+ v->uvsamp = get_bits(gb, 1);
+ if (v->finterpflag == 1) v->interpfrm = get_bits(gb, 1);
- switch(v->pict_type)
+ switch(v->s.pict_type)
{
- case I_TYPE: if (decode_i_picture_header(v) < 0) return -1;
- case P_TYPE: if (decode_p_picture_header(v) < 0) return -1;
+ case I_TYPE: if (decode_i_picture_primary_header(v) < 0) return -1;
+ case P_TYPE: if (decode_p_picture_primary_header(v) < 0) return -1;
case BI_TYPE:
- case B_TYPE: if (decode_b_picture_header(v) < 0) return FRAME_SKIPED;
- default: break;
- }
-
- /* AC/DC Syntax */
- v->transacfrm = get_bits(&v->gb, 1);
- if (v->transacfrm) v->transacfrm += get_bits(&v->gb, 1);
- if (v->pict_type == I_TYPE || v->pict_type == BI_TYPE)
- {
- v->transacfrm2 = get_bits(&v->gb, 1);
- if (v->transacfrm2) v->transacfrm2 += get_bits(&v->gb, 1);
+ case B_TYPE: if (decode_b_picture_primary_header(v) < 0) return FRAME_SKIPPED;
+ default: return -1;
}
- v->transacdctab = get_bits(&v->gb, 1);
- if (v->pict_type == I_TYPE) vop_dquant_decoding(v);
-
- return 0;
}
-#endif
-/******************************************************************************/
-/* MacroBlock decoding functions */
-/******************************************************************************/
-static int standard_decode_i_mbs(VC9Context *v)
+/** Frame header decoding, secondary part
+ * @param v VC9 context
+ * @return Status
+ */
+static int advanced_decode_picture_secondary_header(VC9Context *v)
{
- int x, y, ac_pred, cbpcy;
+ GetBitContext *gb = &v->s.gb;
+ int status = 0;
- /* Select ttmb table depending on pq */
- if (v->pq < 5) v->ttmb_vlc = &vc9_ttmb_vlc[0];
- else if (v->pq < 13) v->ttmb_vlc = &vc9_ttmb_vlc[1];
- else v->ttmb_vlc = &vc9_ttmb_vlc[2];
+ switch(v->s.pict_type)
+ {
+ case P_TYPE: status = decode_p_picture_secondary_header(v); break;
+ case B_TYPE: status = decode_b_picture_secondary_header(v); break;
+ case BI_TYPE:
+ case I_TYPE: status = decode_i_picture_secondary_header(v); break;
+ }
+ if (status<0) return FRAME_SKIPPED;
- for (y=0; y<v->height_mb; y++)
+ /* AC Syntax */
+ v->c_ac_table_index = decode012(gb);
+ if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
{
- for (x=0; x<v->width_mb; x++)
- {
- cbpcy = get_vlc2(&v->gb, vc9_cbpcy_i_vlc.table,
- VC9_CBPCY_I_VLC_BITS, 2);
- ac_pred = get_bits(&v->gb, 1);
- //Decode blocks from that mb wrt cbpcy
- }
+ v->y_ac_table_index = decode012(gb);
}
+ /* DC Syntax */
+ v->s.dc_table_index = decode012(gb);
+
return 0;
}
+#endif
+/** @} */ //End for adv_frame_hdr
-#define GET_MQUANT() \
- if (v->dquantfrm) \
- { \
- if (v->dqprofile == DQPROFILE_ALL_MBS) \
+/***********************************************************************/
+/**
+ * @defgroup block VC9 Block-level functions
+ * @see 7.1.4, p91 and 8.1.1.7, p(1)04
+ * @todo TODO: Integrate to MpegEncContext facilities
+ * @{
+ */
+
+/**
+ * @def GET_MQUANT
+ * @brief Get macroblock-level quantizer scale
+ * @warning XXX: qdiff to the frame quant, not previous quant ?
+ * @fixme XXX: Don't know how to initialize mquant otherwise in last case
+ */
+#define GET_MQUANT() \
+ if (v->dquantfrm) \
+ { \
+ if (v->dqprofile == DQPROFILE_ALL_MBS) \
{ \
if (v->dqbilevel) \
{ \
- mquant = (get_bits(&v->gb, 1)) ? v->pq : v->altpq; \
+ mquant = (get_bits(gb, 1)) ? v->pq : v->altpq; \
} \
else \
{ \
- mqdiff = get_bits(&v->gb, 3); \
+ mqdiff = get_bits(gb, 3); \
if (mqdiff != 7) mquant = v->pq + mqdiff; \
- else mquant = get_bits(&v->gb, 5); \
+ else mquant = get_bits(gb, 5); \
} \
} \
+ else mquant = v->pq; \
}
-/* MVDATA decoding from 8.3.5.2 */
-#define GET_MVDATA() \
- index = 1 + get_vlc2(&v->gb, v->mv_diff_vlc->table, \
- VC9_MV_DIFF_VLC_BITS, 2); \
- if (index > 36) \
- { \
- mb_has_coeffs = 1; \
- index -= 37; \
- } \
- else mb_has_coeffs = 0; \
- mb_is_intra = 0; \
- if (!index) { dmv_x = dmv_y = 0; } \
- else if (index == 35) \
- { \
- dmv_x = get_bits(&v->gb, k_x); \
- dmv_y = get_bits(&v->gb, k_y); \
- mb_is_intra = 1; \
- } \
- else \
- { \
- index1 = index%6; \
- if (hpel_flag && index1 == 5) val = 1; \
- else val = 0; \
- val = get_bits(&v->gb, size_table[index1] - val); \
- sign = 0 - (val&1); \
- dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
- \
- index1 = index/6; \
- if (hpel_flag && index1 == 5) val = 1; \
- else val = 0; \
- val = get_bits(&v->gb, size_table[index1] - val); \
- sign = 0 - (val&1); \
- dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
+/**
+ * @def GET_MVDATA(_dmv_x, _dmv_y)
+ * @brief Get MV differentials
+ * @see MVDATA decoding from 8.3.5.2, p(1)20
+ * @param _dmv_x Horizontal differential for decoded MV
+ * @param _dmv_y Vertical differential for decoded MV
+ * @todo TODO: Use MpegEncContext arrays to store them
+ */
+#define GET_MVDATA(_dmv_x, _dmv_y) \
+ index = 1 + get_vlc2(gb, vc9_mv_diff_vlc[s->mv_table_index].table,\
+ VC9_MV_DIFF_VLC_BITS, 2); \
+ if (index > 36) \
+ { \
+ mb_has_coeffs = 1; \
+ index -= 37; \
+ } \
+ else mb_has_coeffs = 0; \
+ s->mb_intra = 0; \
+ if (!index) { _dmv_x = _dmv_y = 0; } \
+ else if (index == 35) \
+ { \
+ _dmv_x = get_bits(gb, v->k_x); \
+ _dmv_y = get_bits(gb, v->k_y); \
+ s->mb_intra = 1; \
+ } \
+ else \
+ { \
+ index1 = index%6; \
+ if (s->mspel && index1 == 5) val = 1; \
+ else val = 0; \
+ val = get_bits(gb, size_table[index1] - val); \
+ sign = 0 - (val&1); \
+ _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
+ \
+ index1 = index/6; \
+ if (s->mspel && index1 == 5) val = 1; \
+ else val = 0; \
+ val = get_bits(gb, size_table[index1] - val); \
+ sign = 0 - (val&1); \
+ _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
}
-static int decode_p_mbs(VC9Context *v)
+/** Get predicted DC value
+ * prediction dir: left=0, top=1
+ * @param s MpegEncContext
+ * @param[in] n block index in the current MB
+ * @param dc_val_ptr Pointer to DC predictor
+ * @param dir_ptr Prediction direction for use in AC prediction
+ * @todo TODO: Actually do it the VC9 way
+ * @todo TODO: Handle properly edges
+ */
+static inline int vc9_pred_dc(MpegEncContext *s, int n,
+ uint16_t **dc_val_ptr, int *dir_ptr)
{
- int x, y, current_mb = 0, i; /* MB/Block Position info */
- int skip_mb_bit = 0, cbpcy; /* MB/B skip */
- int hybrid_pred, ac_pred; /* Prediction types */
- int mb_has_coeffs = 1 /* last_flag */, mb_is_intra;
- int dmv_x, dmv_y; /* Differential MV components */
- int mv_mode_bit = 0; /* mv_mode_bit: 1MV=0, 4MV=0 */
- int mqdiff, mquant; /* MB quantization */
- int tt_block; /* MB Transform type */
- static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
- offset_table[6] = { 0, 1, 3, 7, 15, 31 };
- int k_x, k_y; /* Long MV fixed bitlength */
- int hpel_flag, intra_flag; /* Some MB properties */
- int index, index1; /* LUT indices */
- int val, sign;
+ int a, b, c, wrap, pred, scale;
+ int16_t *dc_val;
+ static const uint16_t dcpred[31] = {
+ 1024, 512, 341, 256, 205, 171, 146, 128,
+ 114, 102, 93, 85, 79, 73, 68, 64,
+ 60, 57, 54, 51, 49, 47, 45, 43,
+ 41, 39, 38, 37, 35, 34, 33
+ };
+
+ /* find prediction - wmv3_dc_scale always used here in fact */
+ if (n < 4) scale = s->y_dc_scale;
+ else scale = s->c_dc_scale;
+
+ wrap = s->block_wrap[n];
+ dc_val= s->dc_val[0] + s->block_index[n];
+
+ /* B C
+ * A X
+ */
+ a = dc_val[ - 1];
+ b = dc_val[ - 1 - wrap];
+ c = dc_val[ - wrap];
+
+ /* XXX: Rule B is used only for I and BI frames in S/M/C profile
+ * with overlap filtering off
+ */
+ if ((s->pict_type == I_TYPE || s->pict_type == BI_TYPE) &&
+ 1 /* XXX: overlap filtering off */)
+ {
+ /* Set outer values */
+ if (s->first_slice_line && n!=2) b=c=dcpred[scale];
+ if (s->mb_x == 0) b=a=dcpred[scale];
+ }
+ else
+ {
+ /* Set outer values */
+ if (s->first_slice_line && n!=2) b=c=0;
+ if (s->mb_x == 0) b=a=0;
- /* Select ttmb table depending on pq */
- if (v->pq < 5) v->ttmb_vlc = &vc9_ttmb_vlc[0];
- else if (v->pq < 13) v->ttmb_vlc = &vc9_ttmb_vlc[1];
- else v->ttmb_vlc = &vc9_ttmb_vlc[2];
+ /* XXX: Rule A needs to know if blocks are inter or intra :/ */
+ if (0)
+ {
+ /* update predictor */
+ *dc_val_ptr = &dc_val[0];
+ dir_ptr = 0;
+ return a;
+ }
+ }
- /* Select proper long MV range */
- switch (v->mvrange)
+ if (abs(a - b) <= abs(b - c)) {
+ pred = c;
+ *dir_ptr = 1;
+ } else {
+ pred = a;
+ *dir_ptr = 0;
+ }
+
+ /* update predictor */
+ *dc_val_ptr = &dc_val[0];
+ return pred;
+}
+
+/** Decode one block, inter or intra
+ * @param v The VC9 context
+ * @param block 8x8 DCT block
+ * @param n Block index in the current MB (<4=>luma)
+ * @param coded If the block is coded
+ * @param mquant Quantizer step for the current block
+ * @see Inter TT: Table 21, p73 + p91-85
+ * @see Intra TT: Table 20, p72 + p(1)05-(1)07
+ * @todo TODO: Process the blocks
+ * @todo TODO: Use M$ MPEG-4 cbp prediction
+ */
+int vc9_decode_block(VC9Context *v, DCTELEM block[64], int n, int coded, int mquant)
+{
+ GetBitContext *gb = &v->s.gb;
+ MpegEncContext *s = &v->s;
+ int ttblk; /* Transform Type per Block */
+ int subblkpat; /* Sub-block Transform Type Pattern */
+ int dc_pred_dir; /* Direction of the DC prediction used */
+ int run_diff, i;
+
+ /* XXX: Guard against dumb values of mquant */
+ mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
+
+ /* Set DC scale - y and c use the same */
+ s->y_dc_scale = s->y_dc_scale_table[mquant];
+ s->c_dc_scale = s->c_dc_scale_table[mquant];
+
+ if (s->mb_intra)
+ {
+ int dcdiff;
+ uint16_t *dc_val;
+
+ /* Get DC differential */
+ if (n < 4) {
+ dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+ } else {
+ dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+ }
+ if (dcdiff < 0){
+ av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
+ return -1;
+ }
+ if (dcdiff)
+ {
+ if (dcdiff == 119 /* ESC index value */)
+ {
+ /* TODO: Optimize */
+ if (mquant == 1) dcdiff = get_bits(gb, 10);
+ else if (mquant == 2) dcdiff = get_bits(gb, 9);
+ else dcdiff = get_bits(gb, 8);
+ }
+ else
+ {
+ if (mquant == 1)
+ dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
+ else if (mquant == 2)
+ dcdiff = (dcdiff<<1) + get_bits(gb, 1) - 1;
+ }
+ if (get_bits(gb, 1))
+ dcdiff = -dcdiff;
+ }
+
+ /* Prediction */
+ dcdiff += vc9_pred_dc(s, n, &dc_val, &dc_pred_dir);
+ *dc_val = dcdiff;
+ /* Store the quantized DC coeff, used for prediction */
+
+ if (n < 4) {
+ block[0] = dcdiff * s->y_dc_scale;
+ } else {
+ block[0] = dcdiff * s->c_dc_scale;
+ }
+ if (block[0] < 0) {
+#if TRACE
+ //av_log(s->avctx, AV_LOG_ERROR, "DC=%i<0\n", dcdiff);
+#endif
+ //return -1;
+ }
+ /* Skip ? */
+ run_diff = 0;
+ i = 0;
+ if (!coded) {
+ goto not_coded;
+ }
+ }
+ else
{
- case 1: k_x = 10; k_y = 9; break;
- case 2: k_x = 12; k_y = 10; break;
- case 3: k_x = 13; k_y = 11; break;
- default: /*case 0 too */ k_x = 9; k_y = 8; break;
+ mquant = v->pq;
+
+ /* Get TTBLK */
+ if (v->ttmb < 8) /* per block */
+ ttblk = get_vlc2(gb, vc9_ttblk_vlc[v->tt_index].table, VC9_TTBLK_VLC_BITS, 2);
+ else /* Per frame */
+ ttblk = 0; //FIXME, depends on ttfrm
+
+ /* Get SUBBLKPAT */
+ if (ttblk == v->ttblk4x4) /* 4x4 transform for that qp value */
+ subblkpat = 1+get_vlc2(gb, vc9_subblkpat_vlc[v->tt_index].table,
+ VC9_SUBBLKPAT_VLC_BITS, 2);
+ else /* All others: 8x8, 4x8, 8x4 */
+ subblkpat = decode012(gb);
+ }
+
+ //TODO AC Decoding
+ i = 63; //XXX: nothing done yet
+
+
+ not_coded:
+ if (s->mb_intra) {
+ mpeg4_pred_ac(s, block, n, dc_pred_dir);
+ if (s->ac_pred) {
+ i = 63; /* XXX: not optimal */
+ }
+ }
+ if(i>0) i=63; //FIXME/XXX optimize
+ s->block_last_index[n] = i;
+ return 0;
+}
+
+/** @} */ //End for group block
+
+/***********************************************************************/
+/**
+ * @defgroup std_mb VC9 Macroblock-level functions in Simple/Main Profiles
+ * @see 7.1.4, p91 and 8.1.1.7, p(1)04
+ * @todo TODO: Integrate to MpegEncContext facilities
+ * @{
+ */
+
+static inline int vc9_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
+{
+ int xy, wrap, pred, a, b, c;
+
+ xy = s->block_index[n];
+ wrap = s->b8_stride;
+
+ /* B C
+ * A X
+ */
+ a = s->coded_block[xy - 1 ];
+ b = s->coded_block[xy - 1 - wrap];
+ c = s->coded_block[xy - wrap];
+
+ if (b == c) {
+ pred = a;
+ } else {
+ pred = c;
}
- hpel_flag = v->mv_mode & 1; //MV_PMODE is HPEL
- k_x -= hpel_flag;
- k_y -= hpel_flag;
+ /* store value */
+ *coded_block_ptr = &s->coded_block[xy];
+
+ return pred;
+}
+
+/** Decode one I-frame MB (in Simple/Main profile)
+ * @todo TODO: Extend to AP
+ */
+int vc9_decode_i_mb(VC9Context *v, DCTELEM block[6][64])
+{
+ int i, cbp, val;
+ uint8_t *coded_val;
+// uint32_t * const mb_type_ptr= &v->s.current_picture.mb_type[ v->s.mb_x + v->s.mb_y*v->s.mb_stride ];
+
+ v->s.mb_intra = 1;
+ cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
+ if (cbp < 0) return -1;
+ v->s.ac_pred = get_bits(&v->s.gb, 1);
+
+ for (i=0; i<6; i++)
+ {
+ val = ((cbp >> (5 - i)) & 1);
+ if (i < 4) {
+ int pred = vc9_coded_block_pred(&v->s, i, &coded_val);
+ val = val ^ pred;
+ *coded_val = val;
+ }
+ cbp |= val << (5 - i);
+ if (vc9_decode_block(v, block[i], i, val, v->pq) < 0) //FIXME Should be mquant
+ {
+ av_log(v->s.avctx, AV_LOG_ERROR,
+ "\nerror while decoding block: %d x %d (%d)\n", v->s.mb_x, v->s.mb_y, i);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+/** Decode one P-frame MB (in Simple/Main profile)
+ * @todo TODO: Extend to AP
+ * @fixme FIXME: DC value for inter blocks not set
+ */
+int vc9_decode_p_mb(VC9Context *v, DCTELEM block[6][64])
+{
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &s->gb;
+ int i, mb_offset = s->mb_x + s->mb_y*s->mb_width; /* XXX: mb_stride */
+ int cbp; /* cbp decoding stuff */
+ int hybrid_pred; /* Prediction types */
+ int mv_mode_bit = 0;
+ int mqdiff, mquant; /* MB quantization */
+ int ttmb; /* MB Transform type */
+ int status;
+ uint8_t *coded_val;
- for (y=0; y<v->height_mb; y++)
+ static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
+ offset_table[6] = { 0, 1, 3, 7, 15, 31 };
+ int mb_has_coeffs = 1; /* last_flag */
+ int dmv_x, dmv_y; /* Differential MV components */
+ int index, index1; /* LUT indices */
+ int val, sign; /* temp values */
+
+ mquant = v->pq; /* Loosy initialization */
+
+ if (v->mv_type_mb_plane.is_raw)
+ v->mv_type_mb_plane.data[mb_offset] = get_bits(gb, 1);
+ if (v->skip_mb_plane.is_raw)
+ v->skip_mb_plane.data[mb_offset] = get_bits(gb, 1);
+ if (!mv_mode_bit) /* 1MV mode */
{
- for (x=0; x<v->width_mb; x++)
+ if (!v->skip_mb_plane.data[mb_offset])
{
- if (v->mv_type_mb_plane[current_mb])
- mv_mode_bit = get_bits(&v->gb, 1);
- if (0) //skipmb is rawmode
- skip_mb_bit = get_bits(&v->gb, 1);
- if (!mv_mode_bit) /* 1MV mode */
+ GET_MVDATA(dmv_x, dmv_y);
+
+ /* hybrid mv pred, 8.3.5.3.4 */
+ if (v->mv_mode == MV_PMODE_1MV ||
+ v->mv_mode == MV_PMODE_MIXED_MV)
+ hybrid_pred = get_bits(gb, 1);
+ /* FIXME Set DC val for inter block ? */
+ if (s->mb_intra && !mb_has_coeffs)
{
- if (!v->skip_mb_plane[current_mb])
+ GET_MQUANT();
+ s->ac_pred = get_bits(gb, 1);
+ /* XXX: how to handle cbp ? */
+ cbp = 0;
+ for (i=0; i<6; i++)
{
- GET_MVDATA();
-
- /* hybrid mv pred, 8.3.5.3.4 */
- if (v->mv_mode == MV_PMODE_1MV ||
- v->mv_mode == MV_PMODE_MIXED_MV)
- hybrid_pred = get_bits(&v->gb, 1);
- if (mb_is_intra && !mb_has_coeffs)
- {
- GET_MQUANT();
- ac_pred = get_bits(&v->gb, 1);
- }
- else if (mb_has_coeffs)
- {
- if (mb_is_intra) ac_pred = get_bits(&v->gb, 1);
- cbpcy = get_vlc2(&v->gb, v->cbpcy_vlc->table,
- VC9_CBPCY_P_VLC_BITS, 2);
- GET_MQUANT();
- }
- if (!v->ttmbf)
- v->ttfrm = get_vlc2(&v->gb, v->ttmb_vlc->table,
- VC9_TTMB_VLC_BITS, 12);
- //Decode blocks from that mb wrt cbpcy
+ s->coded_block[s->block_index[i]] = 0;
+ vc9_decode_block(v, block[i], i, 0, mquant);
}
- else //Skipped
- {
- /* hybrid mv pred, 8.3.5.3.4 */
- if (v->mv_mode == MV_PMODE_1MV ||
- v->mv_mode == MV_PMODE_MIXED_MV)
- hybrid_pred = get_bits(&v->gb, 1);
+ return 0;
+ }
+ else if (mb_has_coeffs)
+ {
+ if (s->mb_intra) s->ac_pred = get_bits(gb, 1);
+ cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC9_CBPCY_P_VLC_BITS, 2);
+ GET_MQUANT();
+ }
+ else
+ {
+ mquant = v->pq;
+ /* XXX: how to handle cbp ? */
+ /* XXX: how to set values for following predictions ? */
+ cbp = 0;
+ }
+
+ if (!v->ttmbf)
+ ttmb = get_vlc2(gb, vc9_ttmb_vlc[v->tt_index].table,
+ VC9_TTMB_VLC_BITS, 12);
+
+ for (i=0; i<6; i++)
+ {
+ val = ((cbp >> (5 - i)) & 1);
+ if (i < 4) {
+ int pred = vc9_coded_block_pred(&v->s, i, &coded_val);
+ val = val ^ pred;
+ *coded_val = val;
}
- } //1MV mode
- else //4MV mode
+ vc9_decode_block(v, block[i], i, val, mquant); //FIXME
+ }
+ }
+ else //Skipped
+ {
+ /* hybrid mv pred, 8.3.5.3.4 */
+ if (v->mv_mode == MV_PMODE_1MV ||
+ v->mv_mode == MV_PMODE_MIXED_MV)
+ hybrid_pred = get_bits(gb, 1);
+
+ /* TODO: blah */
+ return 0;
+ }
+ } //1MV mode
+ else //4MV mode
+ {
+ if (!v->skip_mb_plane.data[mb_offset] /* unskipped MB */)
+ {
+ /* Get CBPCY */
+ cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC9_CBPCY_P_VLC_BITS, 2);
+ for (i=0; i<6; i++)
{
- if (!v->skip_mb_plane[current_mb] /* unskipped MB */)
- {
- cbpcy = get_vlc2(&v->gb, v->cbpcy_vlc->table,
- VC9_CBPCY_P_VLC_BITS, 2);
- for (i=0; i<4; i++) //For all 4 Y blocks
- {
- if (cbpcy & (1<<6) /* cbpcy set for this block */)
- {
- GET_MVDATA();
- }
- if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */)
- hybrid_pred = get_bits(&v->gb, 1);
- GET_MQUANT();
- if (mb_is_intra /* One of the 4 blocks is intra */ &&
- index /* non-zero pred for that block */)
- ac_pred = get_bits(&v->gb, 1);
- if (!v->ttmbf)
- tt_block = get_vlc2(&v->gb, v->ttmb_vlc->table,
- VC9_TTMB_VLC_BITS, 12);
-
- /* TODO: Process blocks wrt cbpcy */
-
- /* Prepare cbpcy for next block */
- cbpcy <<= 1;
- }
+ val = ((cbp >> (5 - i)) & 1);
+ if (i < 4) {
+ int pred = vc9_coded_block_pred(&v->s, i, &coded_val);
+ val = val ^ pred;
+ *coded_val = val;
}
- else //Skipped MB
+ if (i<4 && val)
{
- for (i=0; i<4; i++) //All 4 Y blocks
- {
- if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */)
- hybrid_pred = get_bits(&v->gb, 1);
-
- /* FIXME: do something */
- }
+ GET_MVDATA(dmv_x, dmv_y);
}
+ if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */)
+ hybrid_pred = get_bits(gb, 1);
+ GET_MQUANT();
+
+ if (s->mb_intra /* One of the 4 blocks is intra */ &&
+ index /* non-zero pred for that block */)
+ s->ac_pred = get_bits(gb, 1);
+ if (!v->ttmbf)
+ ttmb = get_vlc2(gb, vc9_ttmb_vlc[v->tt_index].table,
+ VC9_TTMB_VLC_BITS, 12);
+ status = vc9_decode_block(v, block[i], i, val, mquant);
}
+ return status;
+ }
+ else //Skipped MB
+ {
+ /* XXX: Skipped => cbp=0 and mquant doesn't matter ? */
+ for (i=0; i<4; i++)
+ {
+ if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */)
+ hybrid_pred = get_bits(gb, 1);
+ vc9_decode_block(v, block[i], i, 0, v->pq); //FIXME
+ }
+ vc9_decode_block(v, block[4], 4, 0, v->pq); //FIXME
+ vc9_decode_block(v, block[5], 5, 0, v->pq); //FIXME
+ /* TODO: blah */
+ return 0;
}
- current_mb++;
}
- return 0;
+
+ /* Should never happen */
+ return -1;
}
-static int decode_b_mbs(VC9Context *v)
+/** Decode one B-frame MB (in Simple/Main profile)
+ * @todo TODO: Extend to AP
+ * @warning XXX: Used for decoding BI MBs
+ * @fixme FIXME: DC value for inter blocks not set
+ */
+int vc9_decode_b_mb(VC9Context *v, DCTELEM block[6][64])
{
- int x, y, current_mb = 0 , last_mb = v->height_mb*v->width_mb,
- i /* MB / B postion information */;
- int direct_b_bit = 0, skip_mb_bit = 0;
- int ac_pred;
- int b_mv1 = 0, b_mv2 = 0, b_mv_type = 0;
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &v->s.gb;
+ int mb_offset, i /* MB / B postion information */;
+ int b_mv_type = BMV_TYPE_BACKWARD;
int mquant, mqdiff; /* MB quant stuff */
- int tt_block; /* Block transform type */
-
- for (y=0; y<v->height_mb; y++)
+ int ttmb; /* MacroBlock transform type */
+
+ static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
+ offset_table[6] = { 0, 1, 3, 7, 15, 31 };
+ int mb_has_coeffs = 1; /* last_flag */
+ int dmv1_x, dmv1_y, dmv2_x, dmv2_y; /* Differential MV components */
+ int index, index1; /* LUT indices */
+ int val, sign; /* MVDATA temp values */
+
+ mb_offset = s->mb_width*s->mb_y + s->mb_x; //FIXME: arrays aren't using stride
+
+ if (v->direct_mb_plane.is_raw)
+ v->direct_mb_plane.data[mb_offset] = get_bits(gb, 1);
+ if (v->skip_mb_plane.is_raw)
+ v->skip_mb_plane.data[mb_offset] = get_bits(gb, 1);
+
+ if (!v->direct_mb_plane.data[mb_offset])
{
- for (x=0; x<v->width_mb; x++)
+ if (v->skip_mb_plane.data[mb_offset])
+ {
+ b_mv_type = decode012(gb);
+ if (v->bfraction > 420 /*1/2*/ &&
+ b_mv_type < 3) b_mv_type = 1-b_mv_type;
+ }
+ else
{
- if (v->direct_mb_plane[current_mb])
- direct_b_bit = get_bits(&v->gb, 1);
- if (1 /* Skip mode is raw */)
+ GET_MVDATA(dmv1_x, dmv1_y);
+ if (!s->mb_intra /* b_mv1 tells not intra */)
{
- /* FIXME getting tired commenting */
-#if 0
- skip_mb_bit = get_bits(&v->gb, n); //vlc
-#endif
+ b_mv_type = decode012(gb);
+ if (v->bfraction > 420 /*1/2*/ &&
+ b_mv_type < 3) b_mv_type = 1-b_mv_type;
}
- if (!direct_b_bit)
+ }
+ }
+ if (!v->skip_mb_plane.data[mb_offset])
+ {
+ if (mb_has_coeffs /* BMV1 == "last" */)
+ {
+ GET_MQUANT();
+ if (s->mb_intra /* intra mb */)
+ s->ac_pred = get_bits(gb, 1);
+ }
+ else
+ {
+ /* if bmv1 tells MVs are interpolated */
+ if (b_mv_type == BMV_TYPE_INTERPOLATED)
{
- if (skip_mb_bit)
- {
- /* FIXME getting tired commenting */
-#if 0
- b_mv_type = get_bits(&v->gb, n); //vlc
-#endif
- }
- else
- {
- /* FIXME getting tired commenting */
-#if 0
- b_mv1 = get_bits(&v->gb, n); //VLC
-#endif
- if (1 /* b_mv1 isn't intra */)
- {
- /* FIXME: actually read it */
- b_mv_type = 0; //vlc
- }
- }
+ GET_MVDATA(dmv2_x, dmv2_y);
+ mquant = v->pq; //FIXME: initialization not necessary ?
}
- if (!skip_mb_bit)
+ /* GET_MVDATA has reset some stuff */
+ if (mb_has_coeffs /* b_mv2 == "last" */)
{
- if (b_mv1 != last_mb)
- {
- GET_MQUANT();
- if (1 /* intra mb */)
- ac_pred = get_bits(&v->gb, 1);
- }
- else
- {
- if (1 /* forward_mb is interpolate */)
- {
- /* FIXME: actually read it */
- b_mv2 = 0; //vlc
- }
- if (1 /* b_mv2 isn't the last */)
- {
- if (1 /* intra_mb */)
- ac_pred = get_bits(&v->gb, 1);
- GET_MQUANT();
- }
- }
+ if (s->mb_intra /* intra_mb */)
+ s->ac_pred = get_bits(gb, 1);
+ GET_MQUANT();
}
- //End1
- /* FIXME getting tired, commenting */
-#if 0
- if (v->ttmbf)
- v->ttmb = get_bits(&v->gb, n); //vlc
-#endif
}
- //End2
- for (i=0; i<6; i++)
+ }
+
+ //End1
+ if (v->ttmbf)
+ ttmb = get_vlc2(gb, vc9_ttmb_vlc[v->tt_index].table,
+ VC9_TTMB_VLC_BITS, 12);
+
+ //End2
+ for (i=0; i<6; i++)
+ {
+ vc9_decode_block(v, block[i], i, 0 /*cbp[i]*/, mquant); //FIXME
+ }
+ return 0;
+}
+
+/** Decode all MBs for an I frame in Simple/Main profile
+ * @todo TODO: Move out of the loop the picture type case?
+ (branch prediction should help there though)
+ */
+static int standard_decode_mbs(VC9Context *v)
+{
+ MpegEncContext *s = &v->s;
+
+ /* Set transform type info depending on pq */
+ if (v->pq < 5)
+ {
+ v->tt_index = 0;
+ v->ttblk4x4 = 3;
+ }
+ else if (v->pq < 13)
+ {
+ v->tt_index = 1;
+ v->ttblk4x4 = 3;
+ }
+ else
+ {
+ v->tt_index = 2;
+ v->ttblk4x4 = 2;
+ }
+
+ if (s->pict_type != I_TYPE)
+ {
+ /* Select proper long MV range */
+ switch (v->mvrange)
{
- /* FIXME: process the block */
+ case 1: v->k_x = 10; v->k_y = 9; break;
+ case 2: v->k_x = 12; v->k_y = 10; break;
+ case 3: v->k_x = 13; v->k_y = 11; break;
+ default: /*case 0 too */ v->k_x = 9; v->k_y = 8; break;
}
- current_mb++;
+ s->mspel = v->mv_mode & 1; //MV_PMODE is HPEL
+ v->k_x -= s->mspel;
+ v->k_y -= s->mspel;
+ }
+
+ for (s->mb_y=0; s->mb_y<s->mb_height; s->mb_y++)
+ {
+ for (s->mb_x=0; s->mb_x<s->mb_width; s->mb_x++)
+ {
+ //FIXME Get proper MB DCTELEM
+ //TODO Move out of the loop
+ switch (s->pict_type)
+ {
+ case I_TYPE: vc9_decode_i_mb(v, s->block); break;
+ case P_TYPE: vc9_decode_p_mb(v, s->block); break;
+ case BI_TYPE:
+ case B_TYPE: vc9_decode_b_mb(v, s->block); break;
+ }
+ }
+ //Add a check for overconsumption ?
}
return 0;
}
+/** @} */ //End for group std_mb
#if HAS_ADVANCED_PROFILE
+/***********************************************************************/
+/**
+ * @defgroup adv_mb VC9 Macroblock-level functions in Advanced Profile
+ * @todo TODO: Integrate to MpegEncContext facilities
+ * @todo TODO: Code P, B and BI
+ * @{
+ */
static int advanced_decode_i_mbs(VC9Context *v)
{
- int i, x, y, cbpcy, mqdiff, absmq, mquant, ac_pred, condover,
- current_mb = 0, over_flags_mb = 0;
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &v->s.gb;
+ int mqdiff, mquant, mb_offset = 0, over_flags_mb = 0;
- for (y=0; y<v->height_mb; y++)
+ for (s->mb_y=0; s->mb_y<s->mb_height; s->mb_y++)
{
- for (x=0; x<v->width_mb; x++)
+ for (s->mb_x=0; s->mb_x<s->mb_width; s->mb_x++)
{
- if (v->ac_pred_plane[i])
- ac_pred = get_bits(&v->gb, 1);
- if (condover == 3 && v->over_flags_plane)
- over_flags_mb = get_bits(&v->gb, 1);
+ if (v->ac_pred_plane.is_raw)
+ s->ac_pred = get_bits(gb, 1);
+ else
+ s->ac_pred = v->ac_pred_plane.data[mb_offset];
+ if (v->condover == 3 && v->over_flags_plane.is_raw)
+ over_flags_mb = get_bits(gb, 1);
GET_MQUANT();
+
+ /* TODO: lots */
}
- current_mb++;
+ mb_offset++;
}
return 0;
}
+/** @} */ //End for group adv_mb
#endif
+/** Initialize a VC9/WMV3 decoder
+ * @todo TODO: Handle VC-9 IDUs (Transport level?)
+ * @todo TODO: Decypher remaining bits in extra_data
+ */
static int vc9_decode_init(AVCodecContext *avctx)
{
VC9Context *v = avctx->priv_data;
+ MpegEncContext *s = &v->s;
GetBitContext gb;
if (!avctx->extradata_size || !avctx->extradata) return -1;
avctx->pix_fmt = PIX_FMT_YUV420P;
- v->avctx = avctx;
+ v->s.avctx = avctx;
+
+ if(ff_h263_decode_init(avctx) < 0)
+ return -1;
+ if (vc9_init_common(v) < 0) return -1;
- if (init_common(v) < 0) return -1;
+ av_log(avctx, AV_LOG_INFO, "This decoder is not supposed to produce picture. Dont report this as a bug!\n");
+ avctx->coded_width = avctx->width;
+ avctx->coded_height = avctx->height;
if (avctx->codec_id == CODEC_ID_WMV3)
{
int count = 0;
- // looks like WMV3 has a sequence header stored in the extradata
- // advanced sequence header may be before the first frame
- // the last byte of the extradata is a version number, 1 for the
- // samples we can decode
+ // looks like WMV3 has a sequence header stored in the extradata
+ // advanced sequence header may be before the first frame
+ // the last byte of the extradata is a version number, 1 for the
+ // samples we can decode
- init_get_bits(&gb, avctx->extradata, avctx->extradata_size);
-
- decode_sequence_header(avctx, &gb);
+ init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
- count = avctx->extradata_size*8 - get_bits_count(&gb);
- if (count>0)
- {
- av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
- count, get_bits(&gb, count));
- }
- else
- {
- av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
- }
+ if (decode_sequence_header(avctx, &gb) < 0)
+ return -1;
+
+ count = avctx->extradata_size*8 - get_bits_count(&gb);
+ if (count>0)
+ {
+ av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
+ count, get_bits(&gb, count));
+ }
+ else if (count < 0)
+ {
+ av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
+ }
}
+ avctx->has_b_frames= !!(avctx->max_b_frames);
- /* Done with header parsing */
- //FIXME I feel like this is wrong
- v->width_mb = (avctx->coded_width+15)>>4;
- v->height_mb = (avctx->coded_height+15)>>4;
+ s->mb_width = (avctx->coded_width+15)>>4;
+ s->mb_height = (avctx->coded_height+15)>>4;
/* Allocate mb bitplanes */
- v->mv_type_mb_plane = (uint8_t *)av_malloc(v->width_mb*v->height_mb);
- if (!v->mv_type_mb_plane) return -1;
- v->skip_mb_plane = (uint8_t *)av_malloc(v->width_mb*v->height_mb);
- if (!v->skip_mb_plane) return -1;
- v->direct_mb_plane = (uint8_t *)av_malloc(v->width_mb*v->height_mb);
- if (!v->direct_mb_plane) return -1;
+ if (alloc_bitplane(&v->mv_type_mb_plane, s->mb_width, s->mb_height) < 0)
+ return -1;
+ if (alloc_bitplane(&v->mv_type_mb_plane, s->mb_width, s->mb_height) < 0)
+ return -1;
+ if (alloc_bitplane(&v->skip_mb_plane, s->mb_width, s->mb_height) < 0)
+ return -1;
+ if (alloc_bitplane(&v->direct_mb_plane, s->mb_width, s->mb_height) < 0)
+ return -1;
+
+ /* For predictors */
+ v->previous_line_cbpcy = (uint8_t *)av_malloc(s->mb_stride*4);
+ if (!v->previous_line_cbpcy) return -1;
#if HAS_ADVANCED_PROFILE
- if (v->profile > PROFILE_MAIN)
+ if (v->profile == PROFILE_ADVANCED)
{
- v->over_flags_plane = (uint8_t *)av_malloc(v->width_mb*v->height_mb);
- if (!v->over_flags_plane) return -1;
- v->ac_pred_plane = (uint8_t *)av_malloc(v->width_mb*v->height_mb);
- if (!v->ac_pred_plane) return -1;
+ if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
+ return -1;
+ if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
+ return -1;
}
#endif
return 0;
-}
+ }
+/** Decode a VC9/WMV3 frame
+ * @todo TODO: Handle VC-9 IDUs (Transport level?)
+ * @warning Initial try at using MpegEncContext stuff
+ */
static int vc9_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
VC9Context *v = avctx->priv_data;
- int ret = FRAME_SKIPED, len, start_code;
+ MpegEncContext *s = &v->s;
+ int ret = FRAME_SKIPPED, len;
AVFrame *pict = data;
uint8_t *tmp_buf;
- v->avctx = avctx;
+ v->s.avctx = avctx;
//buf_size = 0 -> last frame
if (!buf_size) return 0;
avpicture_fill((AVPicture *)pict, tmp_buf, avctx->pix_fmt,
avctx->width, avctx->height);
- if (avctx->codec_id == CODEC_ID_WMV3)
+ if (avctx->codec_id == CODEC_ID_VC9)
{
- init_get_bits(&v->gb, buf, buf_size*8);
- av_log(avctx, AV_LOG_INFO, "Frame: %i bits to decode\n", buf_size*8);
-
+#if 0
+ // search for IDU's
+ // FIXME
+ uint32_t scp = 0;
+ int scs = 0, i = 0;
+
+ while (i < buf_size)
+ {
+ for (; i < buf_size && scp != 0x000001; i++)
+ scp = ((scp<<8)|buf[i])&0xffffff;
+
+ if (scp != 0x000001)
+ break; // eof ?
+
+ scs = buf[i++];
+
+ init_get_bits(gb, buf+i, (buf_size-i)*8);
+
+ switch(scs)
+ {
+ case 0x0A: //Sequence End Code
+ return 0;
+ case 0x0B: //Slice Start Code
+ av_log(avctx, AV_LOG_ERROR, "Slice coding not supported\n");
+ return -1;
+ case 0x0C: //Field start code
+ av_log(avctx, AV_LOG_ERROR, "Interlaced coding not supported\n");
+ return -1;
+ case 0x0D: //Frame start code
+ break;
+ case 0x0E: //Entry point Start Code
+ if (v->profile < PROFILE_ADVANCED)
+ av_log(avctx, AV_LOG_ERROR,
+ "Found an entry point in profile %i\n", v->profile);
+ advanced_entry_point_process(avctx, gb);
+ break;
+ case 0x0F: //Sequence header Start Code
+ decode_sequence_header(avctx, gb);
+ break;
+ default:
+ av_log(avctx, AV_LOG_ERROR,
+ "Unsupported IDU suffix %lX\n", scs);
+ }
+
+ i += get_bits_count(gb)*8;
+ }
+#else
+ av_abort();
+#endif
+ }
+ else
+ init_get_bits(&v->s.gb, buf, buf_size*8);
+
+ s->flags= avctx->flags;
+ s->flags2= avctx->flags2;
+
+ /* no supplementary picture */
+ if (buf_size == 0) {
+ /* special case for last picture */
+ if (s->low_delay==0 && s->next_picture_ptr) {
+ *pict= *(AVFrame*)s->next_picture_ptr;
+ s->next_picture_ptr= NULL;
+
+ *data_size = sizeof(AVFrame);
+ }
+
+ return 0;
+ }
+
+ //No IDU - we mimic ff_h263_decode_frame
+ s->bitstream_buffer_size=0;
+
+ if (!s->context_initialized) {
+ if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix
+ return -1;
+ }
+
+ //we need to set current_picture_ptr before reading the header, otherwise we cant store anyting im there
+ if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
+ s->current_picture_ptr= &s->picture[ff_find_unused_picture(s, 0)];
+ }
#if HAS_ADVANCED_PROFILE
- if (v->profile > PROFILE_MAIN)
- {
- if (advanced_decode_picture_header(v) == FRAME_SKIPED) return buf_size;
- switch(v->pict_type)
- {
- case I_TYPE: ret = advanced_decode_i_mbs(v); break;
- case P_TYPE: ret = decode_p_mbs(v); break;
- case B_TYPE:
- case BI_TYPE: ret = decode_b_mbs(v); break;
- default: ret = FRAME_SKIPED;
- }
- if (ret == FRAME_SKIPED) return buf_size; //We ignore for now failures
- }
- else
+ if (v->profile == PROFILE_ADVANCED)
+ ret= advanced_decode_picture_primary_header(v);
+ else
#endif
- {
- if (standard_decode_picture_header(v) == FRAME_SKIPED) return buf_size;
- switch(v->pict_type)
- {
- case I_TYPE: ret = standard_decode_i_mbs(v); break;
- case P_TYPE: ret = decode_p_mbs(v); break;
- case B_TYPE:
- case BI_TYPE: ret = decode_b_mbs(v); break;
- default: ret = FRAME_SKIPED;
- }
- if (ret == FRAME_SKIPED) return buf_size;
- }
-
- /* Size of the output data = image */
- av_log(avctx, AV_LOG_DEBUG, "Consumed %i/%i bits\n",
- get_bits_count(&v->gb), buf_size*8);
+ ret= standard_decode_picture_primary_header(v);
+ if (ret == FRAME_SKIPPED) return buf_size;
+ /* skip if the header was thrashed */
+ if (ret < 0){
+ av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
+ return -1;
+ }
+
+ //No bug workaround yet, no DCT conformance
+
+ //WMV9 does have resized images
+ if (v->profile < PROFILE_ADVANCED && v->multires){
+ //Parse context stuff in here, don't know how appliable it is
+ }
+ //Not sure about context initialization
+
+ // for hurry_up==5
+ s->current_picture.pict_type= s->pict_type;
+ s->current_picture.key_frame= s->pict_type == I_TYPE;
+
+ /* skip b frames if we dont have reference frames */
+ if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable))
+ return buf_size; //FIXME simulating all buffer consumed
+ /* skip b frames if we are in a hurry */
+ if(avctx->hurry_up && s->pict_type==B_TYPE)
+ return buf_size; //FIXME simulating all buffer consumed
+ /* skip everything if we are in a hurry>=5 */
+ if(avctx->hurry_up>=5)
+ return buf_size; //FIXME simulating all buffer consumed
+
+ if(s->next_p_frame_damaged){
+ if(s->pict_type==B_TYPE)
+ return buf_size; //FIXME simulating all buffer consumed
+ else
+ s->next_p_frame_damaged=0;
}
+
+ if(MPV_frame_start(s, avctx) < 0)
+ return -1;
+
+ ff_er_frame_start(s);
+
+ //wmv9 may or may not have skip bits
+#if HAS_ADVANCED_PROFILE
+ if (v->profile == PROFILE_ADVANCED)
+ ret= advanced_decode_picture_secondary_header(v);
else
+#endif
+ ret = standard_decode_picture_secondary_header(v);
+ if (ret<0) return FRAME_SKIPPED; //FIXME Non fatal for now
+
+ //We consider the image coded in only one slice
+#if HAS_ADVANCED_PROFILE
+ if (v->profile == PROFILE_ADVANCED)
{
-#if 0
- // search for IDU's
- // FIXME
- uint32_t scp = 0;
- int scs = 0, i = 0;
-
- while (i < buf_size)
- {
- for (; i < buf_size && scp != 0x000001; i++)
- scp = ((scp<<8)|buf[i])&0xffffff;
-
- if (scp != 0x000001)
- break; // eof ?
-
- scs = buf[i++];
-
- init_get_bits(&v->gb, buf+i, (buf_size-i)*8);
-
- switch(scs)
- {
- case 0xf:
- decode_sequence_header(avctx, &v->gb);
- break;
- // to be finished
- }
-
- i += get_bits_count(&v->gb)*8;
- }
-#else
- av_abort();
+ switch(s->pict_type)
+ {
+ case I_TYPE: ret = advanced_decode_i_mbs(v); break;
+ case P_TYPE: ret = decode_p_mbs(v); break;
+ case B_TYPE:
+ case BI_TYPE: ret = decode_b_mbs(v); break;
+ default: ret = FRAME_SKIPPED;
+ }
+ if (ret == FRAME_SKIPPED) return buf_size; //We ignore for now failures
+ }
+ else
#endif
+ {
+ ret = standard_decode_mbs(v);
+ if (ret == FRAME_SKIPPED) return buf_size;
}
- *data_size = len;
+ ff_er_frame_end(s);
+
+ MPV_frame_end(s);
+
+ assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
+ assert(s->current_picture.pict_type == s->pict_type);
+ if(s->pict_type==B_TYPE || s->low_delay){
+ *pict= *(AVFrame*)&s->current_picture;
+ ff_print_debug_info(s, pict);
+ } else {
+ *pict= *(AVFrame*)&s->last_picture;
+ if(pict)
+ ff_print_debug_info(s, pict);
+ }
+
+ /* Return the Picture timestamp as the frame number */
+ /* we substract 1 because it is added on utils.c */
+ avctx->frame_number = s->picture_number - 1;
+
+ /* dont output the last pic after seeking */
+ if(s->last_picture_ptr || s->low_delay)
+ *data_size = sizeof(AVFrame);
+
+ av_log(avctx, AV_LOG_DEBUG, "Consumed %i/%i bits\n",
+ get_bits_count(&s->gb), buf_size*8);
/* Fake consumption of all data */
+ *data_size = len;
return buf_size; //Number of bytes consumed
}
+/** Close a VC9/WMV3 decoder
+ * @warning Initial try at using MpegEncContext stuff
+ */
static int vc9_decode_end(AVCodecContext *avctx)
{
VC9Context *v = avctx->priv_data;
#if HAS_ADVANCED_PROFILE
- if (v->hrd_rate) av_free(v->hrd_rate);
- if (v->hrd_buffer) av_free(v->hrd_buffer);
+ av_freep(&v->hrd_rate);
+ av_freep(&v->hrd_buffer);
#endif
- if (v->mv_type_mb_plane) av_free(v->mv_type_mb_plane);
- if (v->skip_mb_plane) av_free(v->skip_mb_plane);
- if (v->direct_mb_plane) av_free(v->direct_mb_plane);
+ MPV_common_end(&v->s);
+ free_bitplane(&v->mv_type_mb_plane);
+ free_bitplane(&v->skip_mb_plane);
+ free_bitplane(&v->direct_mb_plane);
return 0;
}
projects / ffmpeg / blobdiff