ffmpeg / libavcodec / vc9.c @ 5509bffa
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/*
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* VC-9 and WMV3 decoder
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* Copyright (c) 2005 Anonymous
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* Copyright (c) 2005 Alex Beregszaszi
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* Copyright (c) 2005 Michael Niedermayer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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/**
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* @file vc9.c
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* VC-9 and WMV3 decoder
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*
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* TODO: most AP stuff, optimize, most of MB layer, transform, filtering and motion compensation, etc
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* TODO: use MPV_ !!
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*/
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#include "common.h" |
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#include "dsputil.h" |
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#include "avcodec.h" |
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#include "mpegvideo.h" |
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#include "vc9data.h" |
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#undef NDEBUG
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#include <assert.h> |
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extern const uint32_t ff_table0_dc_lum[120][2], ff_table1_dc_lum[120][2]; |
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extern const uint32_t ff_table0_dc_chroma[120][2], ff_table1_dc_chroma[120][2]; |
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extern VLC ff_msmp4_dc_luma_vlc[2], ff_msmp4_dc_chroma_vlc[2]; |
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#define MB_INTRA_VLC_BITS 9 |
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extern VLC ff_msmp4_mb_i_vlc;
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#define DC_VLC_BITS 9 |
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static const uint16_t table_mb_intra[64][2]; |
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/* Some inhibiting stuff */
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#define HAS_ADVANCED_PROFILE 0 |
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#define TRACE 1 |
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#if TRACE
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# define INIT_VLC(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, \
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codes, codes_wrap, codes_size, use_static) \ |
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if (init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, \
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codes, codes_wrap, codes_size, use_static) < 0) \
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{ \
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av_log(v->s.avctx, AV_LOG_ERROR, "Error for " # vlc " (%i)\n", i); \ |
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return -1; \ |
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} |
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#else
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# define INIT_VLC(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, \
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codes, codes_wrap, codes_size, use_static) \ |
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init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, \ |
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codes, codes_wrap, codes_size, use_static) |
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#endif
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/** Available Profiles */
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//@{
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#define PROFILE_SIMPLE 0 |
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#define PROFILE_MAIN 1 |
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#define PROFILE_COMPLEX 2 ///< TODO: WMV9 specific |
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#define PROFILE_ADVANCED 3 |
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//@}
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/** Sequence quantizer mode */
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//@{
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#define QUANT_FRAME_IMPLICIT 0 ///< Implicitly specified at frame level |
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#define QUANT_FRAME_EXPLICIT 1 ///< Explicitly specified at frame level |
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#define QUANT_NON_UNIFORM 2 ///< Non-uniform quant used for all frames |
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#define QUANT_UNIFORM 3 ///< Uniform quant used for all frames |
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//@}
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/** Where quant can be changed */
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//@{
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#define DQPROFILE_FOUR_EDGES 0 |
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#define DQPROFILE_DOUBLE_EDGES 1 |
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#define DQPROFILE_SINGLE_EDGE 2 |
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#define DQPROFILE_ALL_MBS 3 |
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//@}
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/** @name Where quant can be changed
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*/
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//@{
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#define DQPROFILE_FOUR_EDGES 0 |
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#define DQSINGLE_BEDGE_LEFT 0 |
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#define DQSINGLE_BEDGE_TOP 1 |
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#define DQSINGLE_BEDGE_RIGHT 2 |
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#define DQSINGLE_BEDGE_BOTTOM 3 |
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//@}
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/** Which pair of edges is quantized with ALTPQUANT */
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//@{
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#define DQDOUBLE_BEDGE_TOPLEFT 0 |
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#define DQDOUBLE_BEDGE_TOPRIGHT 1 |
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#define DQDOUBLE_BEDGE_BOTTOMRIGHT 2 |
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#define DQDOUBLE_BEDGE_BOTTOMLEFT 3 |
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//@}
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/** MV modes for P frames */
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//@{
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#define MV_PMODE_1MV_HPEL_BILIN 0 |
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#define MV_PMODE_1MV 1 |
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#define MV_PMODE_1MV_HPEL 2 |
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#define MV_PMODE_MIXED_MV 3 |
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#define MV_PMODE_INTENSITY_COMP 4 |
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//@}
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/** @name MV types for B frames */
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//@{
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#define BMV_TYPE_BACKWARD 0 |
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#define BMV_TYPE_BACKWARD 0 |
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#define BMV_TYPE_FORWARD 1 |
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#define BMV_TYPE_INTERPOLATED 3 |
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//@}
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/** MV P mode - the 5th element is only used for mode 1 */
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static const uint8_t mv_pmode_table[2][5] = { |
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{ MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_1MV, MV_PMODE_1MV_HPEL, MV_PMODE_MIXED_MV, MV_PMODE_INTENSITY_COMP },
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{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_INTENSITY_COMP }
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}; |
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/** One more frame type */
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#define BI_TYPE 7 |
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static const int fps_nr[5] = { 24, 25, 30, 50, 60 }, |
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fps_dr[2] = { 1000, 1001 }; |
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static const uint8_t pquant_table[3][32] = { |
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{ /* Implicit quantizer */
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0, 1, 2, 3, 4, 5, 6, 7, 8, 6, 7, 8, 9, 10, 11, 12, |
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13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29, 31 |
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}, |
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{ /* Explicit quantizer, pquantizer uniform */
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 |
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}, |
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{ /* Explicit quantizer, pquantizer non-uniform */
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0, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, |
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14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 31 |
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} |
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}; |
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/** @name VC-9 VLC tables and defines
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* @todo TODO move this into the context
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*/
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//@{
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#define VC9_BFRACTION_VLC_BITS 7 |
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static VLC vc9_bfraction_vlc;
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#define VC9_IMODE_VLC_BITS 4 |
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static VLC vc9_imode_vlc;
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#define VC9_NORM2_VLC_BITS 3 |
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static VLC vc9_norm2_vlc;
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#define VC9_NORM6_VLC_BITS 9 |
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static VLC vc9_norm6_vlc;
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/* Could be optimized, one table only needs 8 bits */
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#define VC9_TTMB_VLC_BITS 9 //12 |
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static VLC vc9_ttmb_vlc[3]; |
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#define VC9_MV_DIFF_VLC_BITS 9 //15 |
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static VLC vc9_mv_diff_vlc[4]; |
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#define VC9_CBPCY_P_VLC_BITS 9 //14 |
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static VLC vc9_cbpcy_p_vlc[4]; |
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#define VC9_4MV_BLOCK_PATTERN_VLC_BITS 6 |
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static VLC vc9_4mv_block_pattern_vlc[4]; |
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#define VC9_TTBLK_VLC_BITS 5 |
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static VLC vc9_ttblk_vlc[3]; |
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#define VC9_SUBBLKPAT_VLC_BITS 6 |
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static VLC vc9_subblkpat_vlc[3]; |
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//@}
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/** Bitplane struct
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* We mainly need data and is_raw, so this struct could be avoided
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* to save a level of indirection; feel free to modify
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* @fixme For now, stride=width
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* @warning Data are bits, either 1 or 0
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*/
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typedef struct BitPlane { |
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uint8_t *data; ///< Data buffer
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int width; ///< Width of the buffer |
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int stride; ///< Stride of the buffer |
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int height; ///< Plane height |
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uint8_t is_raw; ///< Bit values must be read at MB level
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} BitPlane; |
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/** The VC9 Context
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* @fixme Change size wherever another size is more efficient
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* Many members are only used for Advanced Profile
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*/
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typedef struct VC9Context{ |
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MpegEncContext s; |
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/** Simple/Main Profile sequence header */
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//@{
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int res_sm; ///< reserved, 2b |
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int res_x8; ///< reserved |
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int multires; ///< frame-level RESPIC syntax element present |
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int res_fasttx; ///< reserved, always 1 |
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int res_transtab; ///< reserved, always 0 |
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int rangered; ///< RANGEREDFRM (range reduction) syntax element present |
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///< at frame level
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int res_rtm_flag; ///< reserved, set to 1 |
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int reserved; ///< reserved |
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//@}
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#if HAS_ADVANCED_PROFILE
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/** Advanced Profile */
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//@{
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int level; ///< 3bits, for Advanced/Simple Profile, provided by TS layer |
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int chromaformat; ///< 2bits, 2=4:2:0, only defined |
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int postprocflag; ///< Per-frame processing suggestion flag present |
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int broadcast; ///< TFF/RFF present |
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int interlace; ///< Progressive/interlaced (RPTFTM syntax element) |
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int tfcntrflag; ///< TFCNTR present |
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int panscanflag; ///< NUMPANSCANWIN, TOPLEFT{X,Y}, BOTRIGHT{X,Y} present |
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int extended_dmv; ///< Additional extended dmv range at P/B frame-level |
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int color_prim; ///< 8bits, chroma coordinates of the color primaries |
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int transfer_char; ///< 8bits, Opto-electronic transfer characteristics |
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int matrix_coef; ///< 8bits, Color primaries->YCbCr transform matrix |
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int hrd_param_flag; ///< Presence of Hypothetical Reference |
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///< Decoder parameters
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//@}
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#endif
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/** Sequence header data for all Profiles
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* TODO: choose between ints, uint8_ts and monobit flags
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*/
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//@{
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int profile; ///< 2bits, Profile |
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int frmrtq_postproc; ///< 3bits, |
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int bitrtq_postproc; ///< 5bits, quantized framerate-based postprocessing strength |
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int fastuvmc; ///< Rounding of qpel vector to hpel ? (not in Simple) |
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int extended_mv; ///< Ext MV in P/B (not in Simple) |
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int dquant; ///< How qscale varies with MBs, 2bits (not in Simple) |
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int vstransform; ///< variable-size [48]x[48] transform type + info |
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int overlap; ///< overlapped transforms in use |
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int quantizer_mode; ///< 2bits, quantizer mode used for sequence, see QUANT_* |
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int finterpflag; ///< INTERPFRM present |
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//@}
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/** Frame decoding info for all profiles */
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//@{
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uint8_t mv_mode; ///< MV coding monde
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uint8_t mv_mode2; ///< Secondary MV coding mode (B frames)
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int k_x; ///< Number of bits for MVs (depends on MV range) |
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int k_y; ///< Number of bits for MVs (depends on MV range) |
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uint8_t pq, altpq; ///< Current/alternate frame quantizer scale
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/** pquant parameters */
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//@{
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uint8_t dquantfrm; |
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uint8_t dqprofile; |
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uint8_t dqsbedge; |
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uint8_t dqbilevel; |
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//@}
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/** AC coding set indexes
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* @see 8.1.1.10, p(1)10
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*/
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//@{
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int c_ac_table_index; ///< Chroma index from ACFRM element |
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int y_ac_table_index; ///< Luma index from AC2FRM element |
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//@}
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int ttfrm; ///< Transform type info present at frame level |
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uint8_t ttmbf; ///< Transform type flag
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int ttmb; ///< Transform type |
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uint8_t ttblk4x4; ///< Value of ttblk which indicates a 4x4 transform
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/** Luma compensation parameters */
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//@{
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uint8_t lumscale; |
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uint8_t lumshift; |
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//@}
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int16_t bfraction; ///< Relative position % anchors=> how to scale MVs
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uint8_t halfpq; ///< Uniform quant over image and qp+.5
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uint8_t respic; ///< Frame-level flag for resized images
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int buffer_fullness; ///< HRD info |
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/** Ranges:
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* -# 0 -> [-64n 63.f] x [-32, 31.f]
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* -# 1 -> [-128, 127.f] x [-64, 63.f]
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* -# 2 -> [-512, 511.f] x [-128, 127.f]
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* -# 3 -> [-1024, 1023.f] x [-256, 255.f]
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*/
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uint8_t mvrange; |
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uint8_t pquantizer; ///< Uniform (over sequence) quantizer in use
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uint8_t *previous_line_cbpcy; ///< To use for predicted CBPCY
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VLC *cbpcy_vlc; ///< CBPCY VLC table
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int tt_index; ///< Index for Transform Type tables |
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BitPlane mv_type_mb_plane; ///< bitplane for mv_type == (4MV)
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BitPlane skip_mb_plane; ///< bitplane for skipped MBs
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BitPlane direct_mb_plane; ///< bitplane for "direct" MBs
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/** Frame decoding info for S/M profiles only */
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//@{
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uint8_t rangeredfrm; ///< out_sample = CLIP((in_sample-128)*2+128)
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uint8_t interpfrm; |
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//@}
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#if HAS_ADVANCED_PROFILE
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/** Frame decoding info for Advanced profile */
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//@{
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uint8_t fcm; ///< 0->Progressive, 2->Frame-Interlace, 3->Field-Interlace
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uint8_t numpanscanwin; |
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uint8_t tfcntr; |
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uint8_t rptfrm, tff, rff; |
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uint16_t topleftx; |
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uint16_t toplefty; |
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uint16_t bottomrightx; |
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uint16_t bottomrighty; |
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uint8_t uvsamp; |
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uint8_t postproc; |
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int hrd_num_leaky_buckets;
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uint8_t bit_rate_exponent; |
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uint8_t buffer_size_exponent; |
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BitPlane ac_pred_plane; ///< AC prediction flags bitplane
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BitPlane over_flags_plane; ///< Overflags bitplane
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uint8_t condover; |
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uint16_t *hrd_rate, *hrd_buffer; |
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uint8_t *hrd_fullness; |
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uint8_t range_mapy_flag; |
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uint8_t range_mapuv_flag; |
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uint8_t range_mapy; |
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uint8_t range_mapuv; |
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//@}
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#endif
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} VC9Context; |
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|
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/**
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* Get unary code of limited length
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* @fixme FIXME Slow and ugly
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* @param gb GetBitContext
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* @param[in] stop The bitstop value (unary code of 1's or 0's)
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* @param[in] len Maximum length
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* @return Unary length/index
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*/
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static int get_prefix(GetBitContext *gb, int stop, int len) |
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{
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#if 1 |
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int i = 0, tmp = !stop; |
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|
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while (i != len && tmp != stop)
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{
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tmp = get_bits(gb, 1);
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i++; |
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} |
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if (i == len && tmp != stop) return len+1; |
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return i;
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#else
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unsigned int buf; |
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int log;
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OPEN_READER(re, gb); |
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UPDATE_CACHE(re, gb); |
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buf=GET_CACHE(re, gb); //Still not sure
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if (stop) buf = ~buf;
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log= av_log2(-buf); //FIXME: -?
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if (log < limit){
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LAST_SKIP_BITS(re, gb, log+1);
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CLOSE_READER(re, gb); |
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return log;
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} |
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LAST_SKIP_BITS(re, gb, limit); |
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CLOSE_READER(re, gb); |
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return limit;
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#endif
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} |
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/**
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* Init VC-9 specific tables and VC9Context members
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* @param v The VC9Context to initialize
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* @return Status
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*/
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static int vc9_init_common(VC9Context *v) |
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{
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static int done = 0; |
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int i = 0; |
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/* Set the bit planes */
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v->mv_type_mb_plane = (struct BitPlane) { NULL, 0, 0, 0 }; |
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v->direct_mb_plane = (struct BitPlane) { NULL, 0, 0, 0 }; |
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v->skip_mb_plane = (struct BitPlane) { NULL, 0, 0, 0 }; |
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#if HAS_ADVANCED_PROFILE
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v->ac_pred_plane = v->over_flags_plane = (struct BitPlane) { NULL, 0, 0, 0 }; |
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v->hrd_rate = v->hrd_buffer = NULL;
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#endif
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/* VLC tables */
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#if 0 // spec -> actual tables converter
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for(i=0; i<64; i++){
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int code= (vc9_norm6_spec[i][1] << vc9_norm6_spec[i][4]) + vc9_norm6_spec[i][3];
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av_log(NULL, AV_LOG_DEBUG, "0x%03X, ", code);
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if(i%16==15) av_log(NULL, AV_LOG_DEBUG, "\n");
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}
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for(i=0; i<64; i++){
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int code= vc9_norm6_spec[i][2] + vc9_norm6_spec[i][4];
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av_log(NULL, AV_LOG_DEBUG, "%2d, ", code);
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if(i%16==15) av_log(NULL, AV_LOG_DEBUG, "\n");
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}
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#endif
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if(!done)
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{
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done = 1;
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INIT_VLC(&vc9_bfraction_vlc, VC9_BFRACTION_VLC_BITS, 23,
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vc9_bfraction_bits, 1, 1, |
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vc9_bfraction_codes, 1, 1, 1); |
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INIT_VLC(&vc9_norm2_vlc, VC9_NORM2_VLC_BITS, 4,
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vc9_norm2_bits, 1, 1, |
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vc9_norm2_codes, 1, 1, 1); |
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INIT_VLC(&vc9_norm6_vlc, VC9_NORM6_VLC_BITS, 64,
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vc9_norm6_bits, 1, 1, |
| 418 |
vc9_norm6_codes, 2, 2, 1); |
| 419 |
INIT_VLC(&vc9_imode_vlc, VC9_IMODE_VLC_BITS, 7,
|
| 420 |
vc9_imode_bits, 1, 1, |
| 421 |
vc9_imode_codes, 1, 1, 1); |
| 422 |
for (i=0; i<3; i++) |
| 423 |
{
|
| 424 |
INIT_VLC(&vc9_ttmb_vlc[i], VC9_TTMB_VLC_BITS, 16,
|
| 425 |
vc9_ttmb_bits[i], 1, 1, |
| 426 |
vc9_ttmb_codes[i], 2, 2, 1); |
| 427 |
INIT_VLC(&vc9_ttblk_vlc[i], VC9_TTBLK_VLC_BITS, 8,
|
| 428 |
vc9_ttblk_bits[i], 1, 1, |
| 429 |
vc9_ttblk_codes[i], 1, 1, 1); |
| 430 |
INIT_VLC(&vc9_subblkpat_vlc[i], VC9_SUBBLKPAT_VLC_BITS, 15,
|
| 431 |
vc9_subblkpat_bits[i], 1, 1, |
| 432 |
vc9_subblkpat_codes[i], 1, 1, 1); |
| 433 |
} |
| 434 |
for(i=0; i<4; i++) |
| 435 |
{
|
| 436 |
INIT_VLC(&vc9_4mv_block_pattern_vlc[i], VC9_4MV_BLOCK_PATTERN_VLC_BITS, 16,
|
| 437 |
vc9_4mv_block_pattern_bits[i], 1, 1, |
| 438 |
vc9_4mv_block_pattern_codes[i], 1, 1, 1); |
| 439 |
INIT_VLC(&vc9_cbpcy_p_vlc[i], VC9_CBPCY_P_VLC_BITS, 64,
|
| 440 |
vc9_cbpcy_p_bits[i], 1, 1, |
| 441 |
vc9_cbpcy_p_codes[i], 2, 2, 1); |
| 442 |
INIT_VLC(&vc9_mv_diff_vlc[i], VC9_MV_DIFF_VLC_BITS, 73,
|
| 443 |
vc9_mv_diff_bits[i], 1, 1, |
| 444 |
vc9_mv_diff_codes[i], 2, 2, 1); |
| 445 |
} |
| 446 |
} |
| 447 |
|
| 448 |
/* Other defaults */
|
| 449 |
v->pq = -1;
|
| 450 |
v->mvrange = 0; /* 7.1.1.18, p80 */ |
| 451 |
|
| 452 |
return 0; |
| 453 |
} |
| 454 |
|
| 455 |
#if HAS_ADVANCED_PROFILE
|
| 456 |
/**
|
| 457 |
* Decode sequence header's Hypothetic Reference Decoder data
|
| 458 |
* @see 6.2.1, p32
|
| 459 |
* @param v The VC9Context to initialize
|
| 460 |
* @param gb A GetBitContext initialized from AVCodecContext extra_data
|
| 461 |
* @return Status
|
| 462 |
*/
|
| 463 |
static int decode_hrd(VC9Context *v, GetBitContext *gb) |
| 464 |
{
|
| 465 |
int i, num;
|
| 466 |
|
| 467 |
num = 1 + get_bits(gb, 5); |
| 468 |
|
| 469 |
/*hrd rate*/
|
| 470 |
if (v->hrd_rate || num != v->hrd_num_leaky_buckets)
|
| 471 |
{
|
| 472 |
av_freep(&v->hrd_rate); |
| 473 |
} |
| 474 |
if (!v->hrd_rate) v->hrd_rate = av_malloc(num*sizeof(uint16_t)); |
| 475 |
if (!v->hrd_rate) return -1; |
| 476 |
|
| 477 |
/*hrd buffer*/
|
| 478 |
if (v->hrd_buffer || num != v->hrd_num_leaky_buckets)
|
| 479 |
{
|
| 480 |
av_freep(&v->hrd_buffer); |
| 481 |
} |
| 482 |
if (!v->hrd_buffer) v->hrd_buffer = av_malloc(num*sizeof(uint16_t)); |
| 483 |
if (!v->hrd_buffer)
|
| 484 |
{
|
| 485 |
av_freep(&v->hrd_rate); |
| 486 |
return -1; |
| 487 |
} |
| 488 |
|
| 489 |
/*hrd fullness*/
|
| 490 |
if (v->hrd_fullness || num != v->hrd_num_leaky_buckets)
|
| 491 |
{
|
| 492 |
av_freep(&v->hrd_buffer); |
| 493 |
} |
| 494 |
if (!v->hrd_fullness) v->hrd_fullness = av_malloc(num*sizeof(uint8_t)); |
| 495 |
if (!v->hrd_fullness)
|
| 496 |
{
|
| 497 |
av_freep(&v->hrd_rate); |
| 498 |
av_freep(&v->hrd_buffer); |
| 499 |
return -1; |
| 500 |
} |
| 501 |
v->hrd_num_leaky_buckets = num; |
| 502 |
|
| 503 |
//exponent in base-2 for rate
|
| 504 |
v->bit_rate_exponent = 6 + get_bits(gb, 4); |
| 505 |
//exponent in base-2 for buffer_size
|
| 506 |
v->buffer_size_exponent = 4 + get_bits(gb, 4); |
| 507 |
|
| 508 |
for (i=0; i<num; i++) |
| 509 |
{
|
| 510 |
//mantissae, ordered (if not, use a function ?
|
| 511 |
v->hrd_rate[i] = 1 + get_bits(gb, 16); |
| 512 |
if (i && v->hrd_rate[i-1]>=v->hrd_rate[i]) |
| 513 |
{
|
| 514 |
av_log(v->s.avctx, AV_LOG_ERROR, "HDR Rates aren't strictly increasing:"
|
| 515 |
"%i vs %i\n", v->hrd_rate[i-1], v->hrd_rate[i]); |
| 516 |
return -1; |
| 517 |
} |
| 518 |
v->hrd_buffer[i] = 1 + get_bits(gb, 16); |
| 519 |
if (i && v->hrd_buffer[i-1]<v->hrd_buffer[i]) |
| 520 |
{
|
| 521 |
av_log(v->s.avctx, AV_LOG_ERROR, "HDR Buffers aren't decreasing:"
|
| 522 |
"%i vs %i\n", v->hrd_buffer[i-1], v->hrd_buffer[i]); |
| 523 |
return -1; |
| 524 |
} |
| 525 |
} |
| 526 |
return 0; |
| 527 |
} |
| 528 |
|
| 529 |
/**
|
| 530 |
* Decode sequence header for Advanced Profile
|
| 531 |
* @see Table 2, p18
|
| 532 |
* @see 6.1.7, pp21-27
|
| 533 |
* @param v The VC9Context to initialize
|
| 534 |
* @param gb A GetBitContext initialized from AVCodecContext extra_data
|
| 535 |
* @return Status
|
| 536 |
*/
|
| 537 |
static int decode_advanced_sequence_header(AVCodecContext *avctx, GetBitContext *gb) |
| 538 |
{
|
| 539 |
VC9Context *v = avctx->priv_data; |
| 540 |
int nr, dr, aspect_ratio;
|
| 541 |
|
| 542 |
v->postprocflag = get_bits(gb, 1);
|
| 543 |
v->broadcast = get_bits(gb, 1);
|
| 544 |
v->interlace = get_bits(gb, 1);
|
| 545 |
|
| 546 |
v->tfcntrflag = get_bits(gb, 1);
|
| 547 |
v->finterpflag = get_bits(gb, 1); //common |
| 548 |
v->panscanflag = get_bits(gb, 1);
|
| 549 |
v->reserved = get_bits(gb, 1);
|
| 550 |
if (v->reserved)
|
| 551 |
{
|
| 552 |
av_log(avctx, AV_LOG_ERROR, "RESERVED should be 0 (is %i)\n",
|
| 553 |
v->reserved); |
| 554 |
return -1; |
| 555 |
} |
| 556 |
if (v->extended_mv)
|
| 557 |
v->extended_dmv = get_bits(gb, 1);
|
| 558 |
|
| 559 |
/* 6.1.7, p21 */
|
| 560 |
if (get_bits(gb, 1) /* pic_size_flag */) |
| 561 |
{
|
| 562 |
avctx->coded_width = get_bits(gb, 12) << 1; |
| 563 |
avctx->coded_height = get_bits(gb, 12) << 1; |
| 564 |
if ( get_bits(gb, 1) /* disp_size_flag */) |
| 565 |
{
|
| 566 |
avctx->width = get_bits(gb, 14);
|
| 567 |
avctx->height = get_bits(gb, 14);
|
| 568 |
} |
| 569 |
|
| 570 |
/* 6.1.7.4, p23 */
|
| 571 |
if ( get_bits(gb, 1) /* aspect_ratio_flag */) |
| 572 |
{
|
| 573 |
aspect_ratio = get_bits(gb, 4); //SAR |
| 574 |
if (aspect_ratio == 0x0F) //FF_ASPECT_EXTENDED |
| 575 |
{
|
| 576 |
avctx->sample_aspect_ratio.num = 1 + get_bits(gb, 8); |
| 577 |
avctx->sample_aspect_ratio.den = 1 + get_bits(gb, 8); |
| 578 |
} |
| 579 |
else if (aspect_ratio == 0x0E) |
| 580 |
{
|
| 581 |
av_log(avctx, AV_LOG_DEBUG, "Reserved AR found\n");
|
| 582 |
} |
| 583 |
else
|
| 584 |
{
|
| 585 |
avctx->sample_aspect_ratio = vc9_pixel_aspect[aspect_ratio]; |
| 586 |
} |
| 587 |
} |
| 588 |
} |
| 589 |
else
|
| 590 |
{
|
| 591 |
avctx->coded_width = avctx->width; |
| 592 |
avctx->coded_height = avctx->height; |
| 593 |
} |
| 594 |
|
| 595 |
/* 6.1.8, p23 */
|
| 596 |
if ( get_bits(gb, 1) /* framerateflag */) |
| 597 |
{
|
| 598 |
if ( !get_bits(gb, 1) /* framerateind */) |
| 599 |
{
|
| 600 |
nr = get_bits(gb, 8);
|
| 601 |
dr = get_bits(gb, 4);
|
| 602 |
if (nr<1) |
| 603 |
{
|
| 604 |
av_log(avctx, AV_LOG_ERROR, "0 is forbidden for FRAMERATENR\n");
|
| 605 |
return -1; |
| 606 |
} |
| 607 |
if (nr>5) |
| 608 |
{
|
| 609 |
av_log(avctx, AV_LOG_ERROR, |
| 610 |
"Reserved FRAMERATENR %i not handled\n", nr);
|
| 611 |
nr = 5; /* overflow protection */ |
| 612 |
} |
| 613 |
if (dr<1) |
| 614 |
{
|
| 615 |
av_log(avctx, AV_LOG_ERROR, "0 is forbidden for FRAMERATEDR\n");
|
| 616 |
return -1; |
| 617 |
} |
| 618 |
if (dr>2) |
| 619 |
{
|
| 620 |
av_log(avctx, AV_LOG_ERROR, |
| 621 |
"Reserved FRAMERATEDR %i not handled\n", dr);
|
| 622 |
dr = 2; /* overflow protection */ |
| 623 |
} |
| 624 |
avctx->time_base.num = fps_nr[dr - 1];
|
| 625 |
avctx->time_base.den = fps_nr[nr - 1];
|
| 626 |
} |
| 627 |
else
|
| 628 |
{
|
| 629 |
nr = get_bits(gb, 16);
|
| 630 |
// 0.03125->2048Hz / 0.03125Hz
|
| 631 |
avctx->time_base.den = 1000000;
|
| 632 |
avctx->time_base.num = 31250*(1+nr); |
| 633 |
} |
| 634 |
} |
| 635 |
|
| 636 |
/* 6.1.9, p25 */
|
| 637 |
if ( get_bits(gb, 1) /* color_format_flag */) |
| 638 |
{
|
| 639 |
//Chromacity coordinates of color primaries
|
| 640 |
//like ITU-R BT.709-2, BT.470-2, ...
|
| 641 |
v->color_prim = get_bits(gb, 8);
|
| 642 |
if (v->color_prim<1) |
| 643 |
{
|
| 644 |
av_log(avctx, AV_LOG_ERROR, "0 for COLOR_PRIM is forbidden\n");
|
| 645 |
return -1; |
| 646 |
} |
| 647 |
if (v->color_prim == 3 || v->color_prim>6) |
| 648 |
{
|
| 649 |
av_log(avctx, AV_LOG_DEBUG, "Reserved COLOR_PRIM %i found\n",
|
| 650 |
v->color_prim); |
| 651 |
return -1; |
| 652 |
} |
| 653 |
|
| 654 |
//Opto-electronic transfer characteristics
|
| 655 |
v->transfer_char = get_bits(gb, 8);
|
| 656 |
if (v->transfer_char < 1) |
| 657 |
{
|
| 658 |
av_log(avctx, AV_LOG_ERROR, "0 for TRAMSFER_CHAR is forbidden\n");
|
| 659 |
return -1; |
| 660 |
} |
| 661 |
if (v->transfer_char == 3 || v->transfer_char>8) |
| 662 |
{
|
| 663 |
av_log(avctx, AV_LOG_DEBUG, "Reserved TRANSFERT_CHAR %i found\n",
|
| 664 |
v->color_prim); |
| 665 |
return -1; |
| 666 |
} |
| 667 |
|
| 668 |
//Matrix coefficient for primariev->YCbCr
|
| 669 |
v->matrix_coef = get_bits(gb, 8);
|
| 670 |
if (v->matrix_coef < 1) |
| 671 |
{
|
| 672 |
av_log(avctx, AV_LOG_ERROR, "0 for MATRIX_COEF is forbidden\n");
|
| 673 |
return -1; |
| 674 |
} |
| 675 |
if ((v->matrix_coef > 2 && v->matrix_coef < 6) || v->matrix_coef > 7) |
| 676 |
{
|
| 677 |
av_log(avctx, AV_LOG_DEBUG, "Reserved MATRIX_COEF %i found\n",
|
| 678 |
v->color_prim); |
| 679 |
return -1; |
| 680 |
} |
| 681 |
} |
| 682 |
|
| 683 |
//Hypothetical reference decoder indicator flag
|
| 684 |
v->hrd_param_flag = get_bits(gb, 1);
|
| 685 |
if (v->hrd_param_flag)
|
| 686 |
{
|
| 687 |
if (decode_hrd(v, gb) < 0) return -1; |
| 688 |
} |
| 689 |
|
| 690 |
/*reset scaling ranges, 6.2.2 & 6.2.3, p33*/
|
| 691 |
v->range_mapy_flag = 0;
|
| 692 |
v->range_mapuv_flag = 0;
|
| 693 |
|
| 694 |
av_log(avctx, AV_LOG_DEBUG, "Advanced profile not supported yet\n");
|
| 695 |
return -1; |
| 696 |
} |
| 697 |
#endif
|
| 698 |
|
| 699 |
/**
|
| 700 |
* Decode Simple/Main Profiles sequence header
|
| 701 |
* @see Figure 7-8, p16-17
|
| 702 |
* @param avctx Codec context
|
| 703 |
* @param gb GetBit context initialized from Codec context extra_data
|
| 704 |
* @return Status
|
| 705 |
*/
|
| 706 |
static int decode_sequence_header(AVCodecContext *avctx, GetBitContext *gb) |
| 707 |
{
|
| 708 |
VC9Context *v = avctx->priv_data; |
| 709 |
|
| 710 |
av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32)); |
| 711 |
v->profile = get_bits(gb, 2);
|
| 712 |
if (v->profile == 2) |
| 713 |
{
|
| 714 |
av_log(avctx, AV_LOG_ERROR, "Profile value 2 is forbidden\n");
|
| 715 |
return -1; |
| 716 |
} |
| 717 |
|
| 718 |
#if HAS_ADVANCED_PROFILE
|
| 719 |
if (v->profile == PROFILE_ADVANCED)
|
| 720 |
{
|
| 721 |
v->level = get_bits(gb, 3);
|
| 722 |
if(v->level >= 5) |
| 723 |
{
|
| 724 |
av_log(avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
|
| 725 |
} |
| 726 |
v->chromaformat = get_bits(gb, 2);
|
| 727 |
if (v->chromaformat != 1) |
| 728 |
{
|
| 729 |
av_log(avctx, AV_LOG_ERROR, |
| 730 |
"Only 4:2:0 chroma format supported\n");
|
| 731 |
return -1; |
| 732 |
} |
| 733 |
} |
| 734 |
else
|
| 735 |
#endif
|
| 736 |
{
|
| 737 |
v->res_sm = get_bits(gb, 2); //reserved |
| 738 |
if (v->res_sm)
|
| 739 |
{
|
| 740 |
av_log(avctx, AV_LOG_ERROR, |
| 741 |
"Reserved RES_SM=%i is forbidden\n", v->res_sm);
|
| 742 |
return -1; |
| 743 |
} |
| 744 |
} |
| 745 |
|
| 746 |
// (fps-2)/4 (->30)
|
| 747 |
v->frmrtq_postproc = get_bits(gb, 3); //common |
| 748 |
// (bitrate-32kbps)/64kbps
|
| 749 |
v->bitrtq_postproc = get_bits(gb, 5); //common |
| 750 |
v->s.loop_filter = get_bits(gb, 1); //common |
| 751 |
if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) |
| 752 |
{
|
| 753 |
av_log(avctx, AV_LOG_ERROR, |
| 754 |
"LOOPFILTER shell not be enabled in simple profile\n");
|
| 755 |
} |
| 756 |
|
| 757 |
#if HAS_ADVANCED_PROFILE
|
| 758 |
if (v->profile < PROFILE_ADVANCED)
|
| 759 |
#endif
|
| 760 |
{
|
| 761 |
v->res_x8 = get_bits(gb, 1); //reserved |
| 762 |
if (v->res_x8)
|
| 763 |
{
|
| 764 |
av_log(avctx, AV_LOG_ERROR, |
| 765 |
"1 for reserved RES_X8 is forbidden\n");
|
| 766 |
//return -1;
|
| 767 |
} |
| 768 |
v->multires = get_bits(gb, 1);
|
| 769 |
v->res_fasttx = get_bits(gb, 1);
|
| 770 |
if (!v->res_fasttx)
|
| 771 |
{
|
| 772 |
av_log(avctx, AV_LOG_ERROR, |
| 773 |
"0 for reserved RES_FASTTX is forbidden\n");
|
| 774 |
//return -1;
|
| 775 |
} |
| 776 |
} |
| 777 |
|
| 778 |
v->fastuvmc = get_bits(gb, 1); //common |
| 779 |
if (!v->profile && !v->fastuvmc)
|
| 780 |
{
|
| 781 |
av_log(avctx, AV_LOG_ERROR, |
| 782 |
"FASTUVMC unavailable in Simple Profile\n");
|
| 783 |
return -1; |
| 784 |
} |
| 785 |
v->extended_mv = get_bits(gb, 1); //common |
| 786 |
if (!v->profile && v->extended_mv)
|
| 787 |
{
|
| 788 |
av_log(avctx, AV_LOG_ERROR, |
| 789 |
"Extended MVs unavailable in Simple Profile\n");
|
| 790 |
return -1; |
| 791 |
} |
| 792 |
v->dquant = get_bits(gb, 2); //common |
| 793 |
v->vstransform = get_bits(gb, 1); //common |
| 794 |
|
| 795 |
#if HAS_ADVANCED_PROFILE
|
| 796 |
if (v->profile < PROFILE_ADVANCED)
|
| 797 |
#endif
|
| 798 |
{
|
| 799 |
v->res_transtab = get_bits(gb, 1);
|
| 800 |
if (v->res_transtab)
|
| 801 |
{
|
| 802 |
av_log(avctx, AV_LOG_ERROR, |
| 803 |
"1 for reserved RES_TRANSTAB is forbidden\n");
|
| 804 |
return -1; |
| 805 |
} |
| 806 |
} |
| 807 |
|
| 808 |
v->overlap = get_bits(gb, 1); //common |
| 809 |
|
| 810 |
#if HAS_ADVANCED_PROFILE
|
| 811 |
if (v->profile < PROFILE_ADVANCED)
|
| 812 |
#endif
|
| 813 |
{
|
| 814 |
v->s.resync_marker = get_bits(gb, 1);
|
| 815 |
v->rangered = get_bits(gb, 1);
|
| 816 |
if (v->rangered && v->profile == PROFILE_SIMPLE)
|
| 817 |
{
|
| 818 |
av_log(avctx, AV_LOG_DEBUG, |
| 819 |
"RANGERED should be set to 0 in simple profile\n");
|
| 820 |
} |
| 821 |
} |
| 822 |
|
| 823 |
v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common |
| 824 |
v->quantizer_mode = get_bits(gb, 2); //common |
| 825 |
|
| 826 |
#if HAS_ADVANCED_PROFILE
|
| 827 |
if (v->profile < PROFILE_ADVANCED)
|
| 828 |
#endif
|
| 829 |
{
|
| 830 |
v->finterpflag = get_bits(gb, 1); //common |
| 831 |
v->res_rtm_flag = get_bits(gb, 1); //reserved |
| 832 |
if (!v->res_rtm_flag)
|
| 833 |
{
|
| 834 |
av_log(avctx, AV_LOG_ERROR, |
| 835 |
"0 for reserved RES_RTM_FLAG is forbidden\n");
|
| 836 |
//return -1;
|
| 837 |
} |
| 838 |
#if TRACE
|
| 839 |
av_log(avctx, AV_LOG_INFO, |
| 840 |
"Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
|
| 841 |
"LoopFilter=%i, MultiRes=%i, FastUVMV=%i, Extended MV=%i\n"
|
| 842 |
"Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
|
| 843 |
"DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
|
| 844 |
v->profile, v->frmrtq_postproc, v->bitrtq_postproc, |
| 845 |
v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv, |
| 846 |
v->rangered, v->vstransform, v->overlap, v->s.resync_marker, |
| 847 |
v->dquant, v->quantizer_mode, avctx->max_b_frames |
| 848 |
); |
| 849 |
return 0; |
| 850 |
#endif
|
| 851 |
} |
| 852 |
#if HAS_ADVANCED_PROFILE
|
| 853 |
else return decode_advanced_sequence_header(avctx, gb); |
| 854 |
#endif
|
| 855 |
} |
| 856 |
|
| 857 |
|
| 858 |
#if HAS_ADVANCED_PROFILE
|
| 859 |
/** Entry point decoding (Advanced Profile)
|
| 860 |
* @param avctx Codec context
|
| 861 |
* @param gb GetBit context initialized from avctx->extra_data
|
| 862 |
* @return Status
|
| 863 |
*/
|
| 864 |
static int advanced_entry_point_process(AVCodecContext *avctx, GetBitContext *gb) |
| 865 |
{
|
| 866 |
VC9Context *v = avctx->priv_data; |
| 867 |
int i;
|
| 868 |
if (v->profile != PROFILE_ADVANCED)
|
| 869 |
{
|
| 870 |
av_log(avctx, AV_LOG_ERROR, |
| 871 |
"Entry point are only defined in Advanced Profile!\n");
|
| 872 |
return -1; //Only for advanced profile! |
| 873 |
} |
| 874 |
if (v->hrd_param_flag)
|
| 875 |
{
|
| 876 |
//Update buffer fullness
|
| 877 |
av_log(avctx, AV_LOG_DEBUG, "Buffer fullness update\n");
|
| 878 |
assert(v->hrd_num_leaky_buckets > 0);
|
| 879 |
for (i=0; i<v->hrd_num_leaky_buckets; i++) |
| 880 |
v->hrd_fullness[i] = get_bits(gb, 8);
|
| 881 |
} |
| 882 |
if ((v->range_mapy_flag = get_bits(gb, 1))) |
| 883 |
{
|
| 884 |
//RANGE_MAPY
|
| 885 |
av_log(avctx, AV_LOG_DEBUG, "RANGE_MAPY\n");
|
| 886 |
v->range_mapy = get_bits(gb, 3);
|
| 887 |
} |
| 888 |
if ((v->range_mapuv_flag = get_bits(gb, 1))) |
| 889 |
{
|
| 890 |
//RANGE_MAPUV
|
| 891 |
av_log(avctx, AV_LOG_DEBUG, "RANGE_MAPUV\n");
|
| 892 |
v->range_mapuv = get_bits(gb, 3);
|
| 893 |
} |
| 894 |
if (v->panscanflag)
|
| 895 |
{
|
| 896 |
//NUMPANSCANWIN
|
| 897 |
v->numpanscanwin = get_bits(gb, 3);
|
| 898 |
av_log(avctx, AV_LOG_DEBUG, "NUMPANSCANWIN: %u\n", v->numpanscanwin);
|
| 899 |
} |
| 900 |
return 0; |
| 901 |
} |
| 902 |
#endif
|
| 903 |
|
| 904 |
/***********************************************************************/
|
| 905 |
/**
|
| 906 |
* @defgroup bitplane VC9 Bitplane decoding
|
| 907 |
* @see 8.7, p56
|
| 908 |
* @{
|
| 909 |
*/
|
| 910 |
|
| 911 |
/** @addtogroup bitplane
|
| 912 |
* Imode types
|
| 913 |
* @{
|
| 914 |
*/
|
| 915 |
#define IMODE_RAW 0 |
| 916 |
#define IMODE_NORM2 1 |
| 917 |
#define IMODE_DIFF2 2 |
| 918 |
#define IMODE_NORM6 3 |
| 919 |
#define IMODE_DIFF6 4 |
| 920 |
#define IMODE_ROWSKIP 5 |
| 921 |
#define IMODE_COLSKIP 6 |
| 922 |
/** @} */ //imode defines |
| 923 |
|
| 924 |
/** Allocate the buffer from a bitplane, given its dimensions
|
| 925 |
* @param bp Bitplane which buffer is to allocate
|
| 926 |
* @param[in] width Width of the buffer
|
| 927 |
* @param[in] height Height of the buffer
|
| 928 |
* @return Status
|
| 929 |
* @todo TODO: Take into account stride
|
| 930 |
* @todo TODO: Allow use of external buffers ?
|
| 931 |
*/
|
| 932 |
int alloc_bitplane(BitPlane *bp, int width, int height) |
| 933 |
{
|
| 934 |
if (!bp || bp->width<0 || bp->height<0) return -1; |
| 935 |
bp->data = (uint8_t*)av_malloc(width*height); |
| 936 |
if (!bp->data) return -1; |
| 937 |
bp->width = bp->stride = width; |
| 938 |
bp->height = height; |
| 939 |
return 0; |
| 940 |
} |
| 941 |
|
| 942 |
/** Free the bitplane's buffer
|
| 943 |
* @param bp Bitplane which buffer is to free
|
| 944 |
*/
|
| 945 |
void free_bitplane(BitPlane *bp)
|
| 946 |
{
|
| 947 |
bp->width = bp->stride = bp->height = 0;
|
| 948 |
if (bp->data) av_freep(&bp->data);
|
| 949 |
} |
| 950 |
|
| 951 |
/** Decode rows by checking if they are skipped
|
| 952 |
* @param plane Buffer to store decoded bits
|
| 953 |
* @param[in] width Width of this buffer
|
| 954 |
* @param[in] height Height of this buffer
|
| 955 |
* @param[in] stride of this buffer
|
| 956 |
*/
|
| 957 |
static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){ |
| 958 |
int x, y;
|
| 959 |
|
| 960 |
for (y=0; y<height; y++){ |
| 961 |
if (!get_bits(gb, 1)) //rowskip |
| 962 |
memset(plane, 0, width);
|
| 963 |
else
|
| 964 |
for (x=0; x<width; x++) |
| 965 |
plane[x] = get_bits(gb, 1);
|
| 966 |
plane += stride; |
| 967 |
} |
| 968 |
} |
| 969 |
|
| 970 |
/** Decode columns by checking if they are skipped
|
| 971 |
* @param plane Buffer to store decoded bits
|
| 972 |
* @param[in] width Width of this buffer
|
| 973 |
* @param[in] height Height of this buffer
|
| 974 |
* @param[in] stride of this buffer
|
| 975 |
* @fixme FIXME: Optimize
|
| 976 |
*/
|
| 977 |
static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){ |
| 978 |
int x, y;
|
| 979 |
|
| 980 |
for (x=0; x<width; x++){ |
| 981 |
if (!get_bits(gb, 1)) //colskip |
| 982 |
for (y=0; y<height; y++) |
| 983 |
plane[y*stride] = 0;
|
| 984 |
else
|
| 985 |
for (y=0; y<height; y++) |
| 986 |
plane[y*stride] = get_bits(gb, 1);
|
| 987 |
plane ++; |
| 988 |
} |
| 989 |
} |
| 990 |
|
| 991 |
/** Decode a bitplane's bits
|
| 992 |
* @param bp Bitplane where to store the decode bits
|
| 993 |
* @param v VC9 context for bit reading and logging
|
| 994 |
* @return Status
|
| 995 |
* @fixme FIXME: Optimize
|
| 996 |
* @todo TODO: Decide if a struct is needed
|
| 997 |
*/
|
| 998 |
static int bitplane_decoding(BitPlane *bp, VC9Context *v) |
| 999 |
{
|
| 1000 |
GetBitContext *gb = &v->s.gb; |
| 1001 |
|
| 1002 |
int imode, x, y, code, use_vertical_tile, tile_w, tile_h, offset;
|
| 1003 |
uint8_t invert, *planep = bp->data; |
| 1004 |
|
| 1005 |
invert = get_bits(gb, 1);
|
| 1006 |
imode = get_vlc2(gb, vc9_imode_vlc.table, VC9_IMODE_VLC_BITS, 2);
|
| 1007 |
|
| 1008 |
bp->is_raw = 0;
|
| 1009 |
switch (imode)
|
| 1010 |
{
|
| 1011 |
case IMODE_RAW:
|
| 1012 |
//Data is actually read in the MB layer (same for all tests == "raw")
|
| 1013 |
bp->is_raw = 1; //invert ignored |
| 1014 |
return invert;
|
| 1015 |
case IMODE_DIFF2:
|
| 1016 |
case IMODE_NORM2:
|
| 1017 |
if ((bp->height*bp->width) & 1) |
| 1018 |
{
|
| 1019 |
*(++planep) = get_bits(gb, 1);
|
| 1020 |
offset = x = 1;
|
| 1021 |
} |
| 1022 |
else offset = x = 0; |
| 1023 |
|
| 1024 |
for (y=0; y<bp->height; y++) |
| 1025 |
{
|
| 1026 |
for(; x<bp->width; x+=2) |
| 1027 |
{
|
| 1028 |
code = get_vlc2(gb, vc9_norm2_vlc.table, VC9_NORM2_VLC_BITS, 2);
|
| 1029 |
*(++planep) = code&1; //lsb => left |
| 1030 |
*(++planep) = (code>>1)&1; //msb => right |
| 1031 |
} |
| 1032 |
planep += bp->stride-bp->width; |
| 1033 |
if ((bp->width-offset)&1) //Odd number previously processed |
| 1034 |
{
|
| 1035 |
code = get_vlc2(gb, vc9_norm2_vlc.table, VC9_NORM2_VLC_BITS, 2);
|
| 1036 |
*planep = code&1;
|
| 1037 |
planep += bp->stride-bp->width; |
| 1038 |
*planep = (code>>1)&1; //msb => right |
| 1039 |
offset = x = 1;
|
| 1040 |
} |
| 1041 |
else
|
| 1042 |
{
|
| 1043 |
offset = x = 0;
|
| 1044 |
planep += bp->stride-bp->width; |
| 1045 |
} |
| 1046 |
} |
| 1047 |
break;
|
| 1048 |
case IMODE_DIFF6:
|
| 1049 |
case IMODE_NORM6:
|
| 1050 |
use_vertical_tile= bp->height%3==0 && bp->width%3!=0; |
| 1051 |
tile_w= use_vertical_tile ? 2 : 3; |
| 1052 |
tile_h= use_vertical_tile ? 3 : 2; |
| 1053 |
|
| 1054 |
for(y= bp->height%tile_h; y< bp->height; y+=tile_h){
|
| 1055 |
for(x= bp->width%tile_w; x< bp->width; x+=tile_w){
|
| 1056 |
code = get_vlc2(gb, vc9_norm6_vlc.table, VC9_NORM6_VLC_BITS, 2);
|
| 1057 |
if(code<0){ |
| 1058 |
av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
|
| 1059 |
return -1; |
| 1060 |
} |
| 1061 |
//FIXME following is a pure guess and probably wrong
|
| 1062 |
//FIXME A bitplane (0 | !0), so could the shifts be avoided ?
|
| 1063 |
planep[x + 0*bp->stride]= (code>>0)&1; |
| 1064 |
planep[x + 1 + 0*bp->stride]= (code>>1)&1; |
| 1065 |
//FIXME Does branch prediction help here?
|
| 1066 |
if(use_vertical_tile){
|
| 1067 |
planep[x + 0 + 1*bp->stride]= (code>>2)&1; |
| 1068 |
planep[x + 1 + 1*bp->stride]= (code>>3)&1; |
| 1069 |
planep[x + 0 + 2*bp->stride]= (code>>4)&1; |
| 1070 |
planep[x + 1 + 2*bp->stride]= (code>>5)&1; |
| 1071 |
}else{
|
| 1072 |
planep[x + 2 + 0*bp->stride]= (code>>2)&1; |
| 1073 |
planep[x + 0 + 1*bp->stride]= (code>>3)&1; |
| 1074 |
planep[x + 1 + 1*bp->stride]= (code>>4)&1; |
| 1075 |
planep[x + 2 + 1*bp->stride]= (code>>5)&1; |
| 1076 |
} |
| 1077 |
} |
| 1078 |
} |
| 1079 |
|
| 1080 |
x= bp->width % tile_w; |
| 1081 |
decode_colskip(bp->data , x, bp->height , bp->stride, &v->s.gb); |
| 1082 |
decode_rowskip(bp->data+x, bp->width - x, bp->height % tile_h, bp->stride, &v->s.gb); |
| 1083 |
|
| 1084 |
break;
|
| 1085 |
case IMODE_ROWSKIP:
|
| 1086 |
decode_rowskip(bp->data, bp->width, bp->height, bp->stride, &v->s.gb); |
| 1087 |
break;
|
| 1088 |
case IMODE_COLSKIP:
|
| 1089 |
decode_colskip(bp->data, bp->width, bp->height, bp->stride, &v->s.gb); |
| 1090 |
break;
|
| 1091 |
default: break; |
| 1092 |
} |
| 1093 |
|
| 1094 |
/* Applying diff operator */
|
| 1095 |
if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
|
| 1096 |
{
|
| 1097 |
planep = bp->data; |
| 1098 |
planep[0] ^= invert;
|
| 1099 |
for (x=1; x<bp->width; x++) |
| 1100 |
planep[x] ^= planep[x-1];
|
| 1101 |
for (y=1; y<bp->height; y++) |
| 1102 |
{
|
| 1103 |
planep += bp->stride; |
| 1104 |
planep[0] ^= planep[-bp->stride];
|
| 1105 |
for (x=1; x<bp->width; x++) |
| 1106 |
{
|
| 1107 |
if (planep[x-1] != planep[x-bp->stride]) planep[x] ^= invert; |
| 1108 |
else planep[x] ^= planep[x-1]; |
| 1109 |
} |
| 1110 |
} |
| 1111 |
} |
| 1112 |
else if (invert) |
| 1113 |
{
|
| 1114 |
planep = bp->data; |
| 1115 |
for (x=0; x<bp->width*bp->height; x++) planep[x] = !planep[x]; //FIXME stride |
| 1116 |
} |
| 1117 |
return (imode<<1) + invert; |
| 1118 |
} |
| 1119 |
/** @} */ //Bitplane group |
| 1120 |
|
| 1121 |
/***********************************************************************/
|
| 1122 |
/** VOP Dquant decoding
|
| 1123 |
* @param v VC9 Context
|
| 1124 |
*/
|
| 1125 |
static int vop_dquant_decoding(VC9Context *v) |
| 1126 |
{
|
| 1127 |
GetBitContext *gb = &v->s.gb; |
| 1128 |
int pqdiff;
|
| 1129 |
|
| 1130 |
//variable size
|
| 1131 |
if (v->dquant == 2) |
| 1132 |
{
|
| 1133 |
pqdiff = get_bits(gb, 3);
|
| 1134 |
if (pqdiff == 7) v->altpq = get_bits(gb, 5); |
| 1135 |
else v->altpq = v->pq + pqdiff + 1; |
| 1136 |
} |
| 1137 |
else
|
| 1138 |
{
|
| 1139 |
v->dquantfrm = get_bits(gb, 1);
|
| 1140 |
if ( v->dquantfrm )
|
| 1141 |
{
|
| 1142 |
v->dqprofile = get_bits(gb, 2);
|
| 1143 |
switch (v->dqprofile)
|
| 1144 |
{
|
| 1145 |
case DQPROFILE_SINGLE_EDGE:
|
| 1146 |
case DQPROFILE_DOUBLE_EDGES:
|
| 1147 |
v->dqsbedge = get_bits(gb, 2);
|
| 1148 |
break;
|
| 1149 |
case DQPROFILE_ALL_MBS:
|
| 1150 |
v->dqbilevel = get_bits(gb, 1);
|
| 1151 |
default: break; //Forbidden ? |
| 1152 |
} |
| 1153 |
if (!v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
|
| 1154 |
{
|
| 1155 |
pqdiff = get_bits(gb, 3);
|
| 1156 |
if (pqdiff == 7) v->altpq = get_bits(gb, 5); |
| 1157 |
else v->altpq = v->pq + pqdiff + 1; |
| 1158 |
} |
| 1159 |
} |
| 1160 |
} |
| 1161 |
return 0; |
| 1162 |
} |
| 1163 |
|
| 1164 |
/***********************************************************************/
|
| 1165 |
/**
|
| 1166 |
* @defgroup all_frame_hdr All VC9 profiles frame header
|
| 1167 |
* @brief Part of the frame header decoding from all profiles
|
| 1168 |
* @warning Only pro/epilog differs between Simple/Main and Advanced => check caller
|
| 1169 |
* @{
|
| 1170 |
*/
|
| 1171 |
/** B and BI frame header decoding, primary part
|
| 1172 |
* @see Tables 11+12, p62-65
|
| 1173 |
* @param v VC9 context
|
| 1174 |
* @return Status
|
| 1175 |
* @warning Also handles BI frames
|
| 1176 |
*/
|
| 1177 |
static int decode_b_picture_primary_header(VC9Context *v) |
| 1178 |
{
|
| 1179 |
GetBitContext *gb = &v->s.gb; |
| 1180 |
int pqindex;
|
| 1181 |
|
| 1182 |
/* Prolog common to all frametypes should be done in caller */
|
| 1183 |
if (v->profile == PROFILE_SIMPLE)
|
| 1184 |
{
|
| 1185 |
av_log(v->s.avctx, AV_LOG_ERROR, "Found a B frame while in Simple Profile!\n");
|
| 1186 |
return FRAME_SKIPPED;
|
| 1187 |
} |
| 1188 |
v->bfraction = vc9_bfraction_lut[get_vlc2(gb, vc9_bfraction_vlc.table, |
| 1189 |
VC9_BFRACTION_VLC_BITS, 2)];
|
| 1190 |
if (v->bfraction < -1) |
| 1191 |
{
|
| 1192 |
av_log(v->s.avctx, AV_LOG_ERROR, "Invalid BFRaction\n");
|
| 1193 |
return FRAME_SKIPPED;
|
| 1194 |
} |
| 1195 |
else if (!v->bfraction) |
| 1196 |
{
|
| 1197 |
/* We actually have a BI frame */
|
| 1198 |
v->s.pict_type = BI_TYPE; |
| 1199 |
v->buffer_fullness = get_bits(gb, 7);
|
| 1200 |
} |
| 1201 |
|
| 1202 |
/* Read the quantization stuff */
|
| 1203 |
pqindex = get_bits(gb, 5);
|
| 1204 |
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
| 1205 |
v->pq = pquant_table[0][pqindex];
|
| 1206 |
else
|
| 1207 |
{
|
| 1208 |
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
|
| 1209 |
} |
| 1210 |
if (pqindex < 9) v->halfpq = get_bits(gb, 1); |
| 1211 |
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
| 1212 |
v->pquantizer = get_bits(gb, 1);
|
| 1213 |
#if HAS_ADVANCED_PROFILE
|
| 1214 |
if (v->profile == PROFILE_ADVANCED)
|
| 1215 |
{
|
| 1216 |
if (v->postprocflag) v->postproc = get_bits(gb, 2); |
| 1217 |
if (v->extended_mv == 1 && v->s.pict_type != BI_TYPE) |
| 1218 |
v->mvrange = get_prefix(gb, 0, 3); |
| 1219 |
} |
| 1220 |
#endif
|
| 1221 |
else
|
| 1222 |
{
|
| 1223 |
if (v->extended_mv == 1) |
| 1224 |
v->mvrange = get_prefix(gb, 0, 3); |
| 1225 |
} |
| 1226 |
/* Read the MV mode */
|
| 1227 |
if (v->s.pict_type != BI_TYPE)
|
| 1228 |
{
|
| 1229 |
v->mv_mode = get_bits(gb, 1);
|
| 1230 |
if (v->pq < 13) |
| 1231 |
{
|
| 1232 |
if (!v->mv_mode)
|
| 1233 |
{
|
| 1234 |
v->mv_mode = get_bits(gb, 2);
|
| 1235 |
if (v->mv_mode)
|
| 1236 |
av_log(v->s.avctx, AV_LOG_ERROR, |
| 1237 |
"mv_mode for lowquant B frame was %i\n", v->mv_mode);
|
| 1238 |
} |
| 1239 |
} |
| 1240 |
else
|
| 1241 |
{
|
| 1242 |
if (!v->mv_mode)
|
| 1243 |
{
|
| 1244 |
if (get_bits(gb, 1)) |
| 1245 |
av_log(v->s.avctx, AV_LOG_ERROR, |
| 1246 |
"mv_mode for highquant B frame was %i\n", v->mv_mode);
|
| 1247 |
} |
| 1248 |
v->mv_mode = 1-v->mv_mode; //To match (pq < 13) mapping |
| 1249 |
} |
| 1250 |
} |
| 1251 |
|
| 1252 |
return 0; |
| 1253 |
} |
| 1254 |
|
| 1255 |
/** B and BI frame header decoding, secondary part
|
| 1256 |
* @see Tables 11+12, p62-65
|
| 1257 |
* @param v VC9 context
|
| 1258 |
* @return Status
|
| 1259 |
* @warning Also handles BI frames
|
| 1260 |
* @warning To call once all MB arrays are allocated
|
| 1261 |
* @todo Support Advanced Profile headers
|
| 1262 |
*/
|
| 1263 |
static int decode_b_picture_secondary_header(VC9Context *v) |
| 1264 |
{
|
| 1265 |
GetBitContext *gb = &v->s.gb; |
| 1266 |
int status;
|
| 1267 |
|
| 1268 |
status = bitplane_decoding(&v->skip_mb_plane, v); |
| 1269 |
if (status < 0) return -1; |
| 1270 |
#if TRACE
|
| 1271 |
if (v->mv_mode == MV_PMODE_MIXED_MV)
|
| 1272 |
{
|
| 1273 |
status = bitplane_decoding(&v->mv_type_mb_plane, v); |
| 1274 |
if (status < 0) |
| 1275 |
return -1; |
| 1276 |
#if TRACE
|
| 1277 |
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
| 1278 |
"Imode: %i, Invert: %i\n", status>>1, status&1); |
| 1279 |
#endif
|
| 1280 |
} |
| 1281 |
|
| 1282 |
//bitplane
|
| 1283 |
status = bitplane_decoding(&v->direct_mb_plane, v); |
| 1284 |
if (status < 0) return -1; |
| 1285 |
#if TRACE
|
| 1286 |
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct plane encoding: "
|
| 1287 |
"Imode: %i, Invert: %i\n", status>>1, status&1); |
| 1288 |
#endif
|
| 1289 |
|
| 1290 |
av_log(v->s.avctx, AV_LOG_DEBUG, "Skip MB plane encoding: "
|
| 1291 |
"Imode: %i, Invert: %i\n", status>>1, status&1); |
| 1292 |
#endif
|
| 1293 |
|
| 1294 |
/* FIXME: what is actually chosen for B frames ? */
|
| 1295 |
v->s.mv_table_index = get_bits(gb, 2); //but using vc9_ tables |
| 1296 |
v->cbpcy_vlc = &vc9_cbpcy_p_vlc[get_bits(gb, 2)];
|
| 1297 |
|
| 1298 |
if (v->dquant)
|
| 1299 |
{
|
| 1300 |
vop_dquant_decoding(v); |
| 1301 |
} |
| 1302 |
|
| 1303 |
if (v->vstransform)
|
| 1304 |
{
|
| 1305 |
v->ttmbf = get_bits(gb, 1);
|
| 1306 |
if (v->ttmbf)
|
| 1307 |
{
|
| 1308 |
v->ttfrm = get_bits(gb, 2);
|
| 1309 |
av_log(v->s.avctx, AV_LOG_INFO, "Transform used: %ix%i\n",
|
| 1310 |
(v->ttfrm & 2) ? 4 : 8, (v->ttfrm & 1) ? 4 : 8); |
| 1311 |
} |
| 1312 |
} |
| 1313 |
/* Epilog (AC/DC syntax) should be done in caller */
|
| 1314 |
return 0; |
| 1315 |
} |
| 1316 |
|
| 1317 |
/** I frame header decoding, primary part
|
| 1318 |
* @see Tables 5+7, p53-54 and 55-57
|
| 1319 |
* @param v VC9 context
|
| 1320 |
* @return Status
|
| 1321 |
* @todo Support Advanced Profile headers
|
| 1322 |
*/
|
| 1323 |
static int decode_i_picture_primary_header(VC9Context *v) |
| 1324 |
{
|
| 1325 |
GetBitContext *gb = &v->s.gb; |
| 1326 |
int pqindex;
|
| 1327 |
|
| 1328 |
/* Prolog common to all frametypes should be done in caller */
|
| 1329 |
//BF = Buffer Fullness
|
| 1330 |
if (v->profile < PROFILE_ADVANCED && get_bits(gb, 7)) |
| 1331 |
{
|
| 1332 |
av_log(v->s.avctx, AV_LOG_DEBUG, "I BufferFullness not 0\n");
|
| 1333 |
} |
| 1334 |
|
| 1335 |
/* Quantizer stuff */
|
| 1336 |
pqindex = get_bits(gb, 5);
|
| 1337 |
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
| 1338 |
v->pq = pquant_table[0][pqindex];
|
| 1339 |
else
|
| 1340 |
{
|
| 1341 |
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
|
| 1342 |
} |
| 1343 |
if (pqindex < 9) v->halfpq = get_bits(gb, 1); |
| 1344 |
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
| 1345 |
v->pquantizer = get_bits(gb, 1);
|
| 1346 |
av_log(v->s.avctx, AV_LOG_DEBUG, "I frame: QP=%i (+%i/2)\n",
|
| 1347 |
v->pq, v->halfpq); |
| 1348 |
return 0; |
| 1349 |
} |
| 1350 |
|
| 1351 |
/** I frame header decoding, secondary part
|
| 1352 |
* @param v VC9 context
|
| 1353 |
* @return Status
|
| 1354 |
* @warning Not called in A/S/C profiles, it seems
|
| 1355 |
* @todo Support Advanced Profile headers
|
| 1356 |
*/
|
| 1357 |
static int decode_i_picture_secondary_header(VC9Context *v) |
| 1358 |
{
|
| 1359 |
#if HAS_ADVANCED_PROFILE
|
| 1360 |
int status;
|
| 1361 |
if (v->profile == PROFILE_ADVANCED)
|
| 1362 |
{
|
| 1363 |
v->s.ac_pred = get_bits(&v->s.gb, 1);
|
| 1364 |
if (v->postprocflag) v->postproc = get_bits(&v->s.gb, 1); |
| 1365 |
/* 7.1.1.34 + 8.5.2 */
|
| 1366 |
if (v->overlap && v->pq<9) |
| 1367 |
{
|
| 1368 |
v->condover = get_bits(&v->s.gb, 1);
|
| 1369 |
if (v->condover)
|
| 1370 |
{
|
| 1371 |
v->condover = 2+get_bits(&v->s.gb, 1); |
| 1372 |
if (v->condover == 3) |
| 1373 |
{
|
| 1374 |
status = bitplane_decoding(&v->over_flags_plane, v); |
| 1375 |
if (status < 0) return -1; |
| 1376 |
# if TRACE
|
| 1377 |
av_log(v->s.avctx, AV_LOG_DEBUG, "Overflags plane encoding: "
|
| 1378 |
"Imode: %i, Invert: %i\n", status>>1, status&1); |
| 1379 |
# endif
|
| 1380 |
} |
| 1381 |
} |
| 1382 |
} |
| 1383 |
} |
| 1384 |
#endif
|
| 1385 |
|
| 1386 |
/* Epilog (AC/DC syntax) should be done in caller */
|
| 1387 |
return 0; |
| 1388 |
} |
| 1389 |
|
| 1390 |
/** P frame header decoding, primary part
|
| 1391 |
* @see Tables 5+7, p53-54 and 55-57
|
| 1392 |
* @param v VC9 context
|
| 1393 |
* @todo Support Advanced Profile headers
|
| 1394 |
* @return Status
|
| 1395 |
*/
|
| 1396 |
static int decode_p_picture_primary_header(VC9Context *v) |
| 1397 |
{
|
| 1398 |
/* INTERFRM, FRMCNT, RANGEREDFRM read in caller */
|
| 1399 |
GetBitContext *gb = &v->s.gb; |
| 1400 |
int lowquant, pqindex;
|
| 1401 |
|
| 1402 |
pqindex = get_bits(gb, 5);
|
| 1403 |
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
| 1404 |
v->pq = pquant_table[0][pqindex];
|
| 1405 |
else
|
| 1406 |
{
|
| 1407 |
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
|
| 1408 |
} |
| 1409 |
if (pqindex < 9) v->halfpq = get_bits(gb, 1); |
| 1410 |
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
| 1411 |
v->pquantizer = get_bits(gb, 1);
|
| 1412 |
av_log(v->s.avctx, AV_LOG_DEBUG, "P Frame: QP=%i (+%i/2)\n",
|
| 1413 |
v->pq, v->halfpq); |
| 1414 |
if (v->extended_mv == 1) v->mvrange = get_prefix(gb, 0, 3); |
| 1415 |
#if HAS_ADVANCED_PROFILE
|
| 1416 |
if (v->profile == PROFILE_ADVANCED)
|
| 1417 |
{
|
| 1418 |
if (v->postprocflag) v->postproc = get_bits(gb, 1); |
| 1419 |
} |
| 1420 |
else
|
| 1421 |
#endif
|
| 1422 |
if (v->multires) v->respic = get_bits(gb, 2); |
| 1423 |
lowquant = (v->pquantizer>12) ? 0 : 1; |
| 1424 |
v->mv_mode = mv_pmode_table[lowquant][get_prefix(gb, 1, 4)]; |
| 1425 |
if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
|
| 1426 |
{
|
| 1427 |
v->mv_mode2 = mv_pmode_table[lowquant][get_prefix(gb, 1, 3)]; |
| 1428 |
v->lumscale = get_bits(gb, 6);
|
| 1429 |
v->lumshift = get_bits(gb, 6);
|
| 1430 |
} |
| 1431 |
return 0; |
| 1432 |
} |
| 1433 |
|
| 1434 |
/** P frame header decoding, secondary part
|
| 1435 |
* @see Tables 5+7, p53-54 and 55-57
|
| 1436 |
* @param v VC9 context
|
| 1437 |
* @warning To call once all MB arrays are allocated
|
| 1438 |
* @return Status
|
| 1439 |
*/
|
| 1440 |
static int decode_p_picture_secondary_header(VC9Context *v) |
| 1441 |
{
|
| 1442 |
GetBitContext *gb = &v->s.gb; |
| 1443 |
int status = 0; |
| 1444 |
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
| 1445 |
v->mv_mode2 == MV_PMODE_MIXED_MV) |
| 1446 |
|| v->mv_mode == MV_PMODE_MIXED_MV) |
| 1447 |
{
|
| 1448 |
status = bitplane_decoding(&v->mv_type_mb_plane, v); |
| 1449 |
if (status < 0) return -1; |
| 1450 |
#if TRACE
|
| 1451 |
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
| 1452 |
"Imode: %i, Invert: %i\n", status>>1, status&1); |
| 1453 |
#endif
|
| 1454 |
} |
| 1455 |
|
| 1456 |
status = bitplane_decoding(&v->skip_mb_plane, v); |
| 1457 |
if (status < 0) return -1; |
| 1458 |
#if TRACE
|
| 1459 |
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
| 1460 |
"Imode: %i, Invert: %i\n", status>>1, status&1); |
| 1461 |
#endif
|
| 1462 |
|
| 1463 |
/* Hopefully this is correct for P frames */
|
| 1464 |
v->s.mv_table_index =get_bits(gb, 2); //but using vc9_ tables |
| 1465 |
v->cbpcy_vlc = &vc9_cbpcy_p_vlc[get_bits(gb, 2)];
|
| 1466 |
|
| 1467 |
if (v->dquant)
|
| 1468 |
{
|
| 1469 |
av_log(v->s.avctx, AV_LOG_INFO, "VOP DQuant info\n");
|
| 1470 |
vop_dquant_decoding(v); |
| 1471 |
} |
| 1472 |
|
| 1473 |
v->ttfrm = 0; //FIXME Is that so ? |
| 1474 |
if (v->vstransform)
|
| 1475 |
{
|
| 1476 |
v->ttmbf = get_bits(gb, 1);
|
| 1477 |
if (v->ttmbf)
|
| 1478 |
{
|
| 1479 |
v->ttfrm = get_bits(gb, 2);
|
| 1480 |
av_log(v->s.avctx, AV_LOG_INFO, "Transform used: %ix%i\n",
|
| 1481 |
(v->ttfrm & 2) ? 4 : 8, (v->ttfrm & 1) ? 4 : 8); |
| 1482 |
} |
| 1483 |
} |
| 1484 |
/* Epilog (AC/DC syntax) should be done in caller */
|
| 1485 |
return 0; |
| 1486 |
} |
| 1487 |
/** @} */ //End of group all_frm_hdr |
| 1488 |
|
| 1489 |
|
| 1490 |
/***********************************************************************/
|
| 1491 |
/**
|
| 1492 |
* @defgroup std_frame_hdr VC9 Simple/Main Profiles header decoding
|
| 1493 |
* @brief Part of the frame header decoding belonging to Simple/Main Profiles
|
| 1494 |
* @warning Only pro/epilog differs between Simple/Main and Advanced =>
|
| 1495 |
* check caller
|
| 1496 |
* @{
|
| 1497 |
*/
|
| 1498 |
|
| 1499 |
/** Frame header decoding, first part, in Simple and Main profiles
|
| 1500 |
* @see Tables 5+7, p53-54 and 55-57
|
| 1501 |
* @param v VC9 context
|
| 1502 |
* @todo FIXME: RANGEREDFRM element not read if BI frame from Table6, P54
|
| 1503 |
* However, 7.1.1.8 says "all frame types, for main profiles"
|
| 1504 |
* @return Status
|
| 1505 |
*/
|
| 1506 |
static int standard_decode_picture_primary_header(VC9Context *v) |
| 1507 |
{
|
| 1508 |
GetBitContext *gb = &v->s.gb; |
| 1509 |
int status = 0; |
| 1510 |
|
| 1511 |
if (v->finterpflag) v->interpfrm = get_bits(gb, 1); |
| 1512 |
skip_bits(gb, 2); //framecnt unused |
| 1513 |
if (v->rangered) v->rangeredfrm = get_bits(gb, 1); |
| 1514 |
v->s.pict_type = get_bits(gb, 1);
|
| 1515 |
if (v->s.avctx->max_b_frames)
|
| 1516 |
{
|
| 1517 |
if (!v->s.pict_type)
|
| 1518 |
{
|
| 1519 |
if (get_bits(gb, 1)) v->s.pict_type = I_TYPE; |
| 1520 |
else v->s.pict_type = B_TYPE;
|
| 1521 |
} |
| 1522 |
else v->s.pict_type = P_TYPE;
|
| 1523 |
} |
| 1524 |
else v->s.pict_type++;
|
| 1525 |
|
| 1526 |
switch (v->s.pict_type)
|
| 1527 |
{
|
| 1528 |
case I_TYPE: status = decode_i_picture_primary_header(v); break; |
| 1529 |
case P_TYPE: status = decode_p_picture_primary_header(v); break; |
| 1530 |
case BI_TYPE: //Same as B |
| 1531 |
case B_TYPE: status = decode_b_picture_primary_header(v); break; |
| 1532 |
} |
| 1533 |
|
| 1534 |
if (status == FRAME_SKIPPED)
|
| 1535 |
{
|
| 1536 |
av_log(v->s.avctx, AV_LOG_INFO, "Skipping frame...\n");
|
| 1537 |
return status;
|
| 1538 |
} |
| 1539 |
return 0; |
| 1540 |
} |
| 1541 |
|
| 1542 |
/** Frame header decoding, secondary part
|
| 1543 |
* @param v VC9 context
|
| 1544 |
* @warning To call once all MB arrays are allocated
|
| 1545 |
* @return Status
|
| 1546 |
*/
|
| 1547 |
static int standard_decode_picture_secondary_header(VC9Context *v) |
| 1548 |
{
|
| 1549 |
GetBitContext *gb = &v->s.gb; |
| 1550 |
int status = 0; |
| 1551 |
|
| 1552 |
switch (v->s.pict_type)
|
| 1553 |
{
|
| 1554 |
case P_TYPE: status = decode_p_picture_secondary_header(v); break; |
| 1555 |
case B_TYPE: status = decode_b_picture_secondary_header(v); break; |
| 1556 |
case BI_TYPE:
|
| 1557 |
case I_TYPE: break; //Nothing needed as it's done in the epilog |
| 1558 |
} |
| 1559 |
if (status < 0) return FRAME_SKIPPED; |
| 1560 |
|
| 1561 |
/* AC Syntax */
|
| 1562 |
v->c_ac_table_index = decode012(gb); |
| 1563 |
if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
|
| 1564 |
{
|
| 1565 |
v->y_ac_table_index = decode012(gb); |
| 1566 |
} |
| 1567 |
/* DC Syntax */
|
| 1568 |
v->s.dc_table_index = decode012(gb); |
| 1569 |
|
| 1570 |
return 0; |
| 1571 |
} |
| 1572 |
/** @} */ //End for group std_frame_hdr |
| 1573 |
|
| 1574 |
#if HAS_ADVANCED_PROFILE
|
| 1575 |
/***********************************************************************/
|
| 1576 |
/**
|
| 1577 |
* @defgroup adv_frame_hdr VC9 Advanced Profile header decoding
|
| 1578 |
* @brief Part of the frame header decoding belonging to Advanced Profiles
|
| 1579 |
* @warning Only pro/epilog differs between Simple/Main and Advanced =>
|
| 1580 |
* check caller
|
| 1581 |
* @{
|
| 1582 |
*/
|
| 1583 |
/** Frame header decoding, primary part
|
| 1584 |
* @param v VC9 context
|
| 1585 |
* @return Status
|
| 1586 |
*/
|
| 1587 |
static int advanced_decode_picture_primary_header(VC9Context *v) |
| 1588 |
{
|
| 1589 |
GetBitContext *gb = &v->s.gb; |
| 1590 |
static const int type_table[4] = { P_TYPE, B_TYPE, I_TYPE, BI_TYPE }; |
| 1591 |
int type;
|
| 1592 |
|
| 1593 |
if (v->interlace)
|
| 1594 |
{
|
| 1595 |
v->fcm = get_bits(gb, 1);
|
| 1596 |
if (v->fcm) v->fcm = 2+get_bits(gb, 1); |
| 1597 |
} |
| 1598 |
|
| 1599 |
type = get_prefix(gb, 0, 4); |
| 1600 |
if (type > 4 || type < 0) return FRAME_SKIPPED; |
| 1601 |
v->s.pict_type = type_table[type]; |
| 1602 |
av_log(v->s.avctx, AV_LOG_INFO, "AP Frame Type: %i\n", v->s.pict_type);
|
| 1603 |
|
| 1604 |
if (v->tfcntrflag) v->tfcntr = get_bits(gb, 8); |
| 1605 |
if (v->broadcast)
|
| 1606 |
{
|
| 1607 |
if (!v->interlace) v->rptfrm = get_bits(gb, 2); |
| 1608 |
else
|
| 1609 |
{
|
| 1610 |
v->tff = get_bits(gb, 1);
|
| 1611 |
v->rff = get_bits(gb, 1);
|
| 1612 |
} |
| 1613 |
} |
| 1614 |
|
| 1615 |
if (v->panscanflag)
|
| 1616 |
{
|
| 1617 |
#if 0
|
| 1618 |
for (i=0; i<v->numpanscanwin; i++)
|
| 1619 |
{
|
| 1620 |
v->topleftx[i] = get_bits(gb, 16);
|
| 1621 |
v->toplefty[i] = get_bits(gb, 16);
|
| 1622 |
v->bottomrightx[i] = get_bits(gb, 16);
|
| 1623 |
v->bottomrighty[i] = get_bits(gb, 16);
|
| 1624 |
}
|
| 1625 |
#else
|
| 1626 |
skip_bits(gb, 16*4*v->numpanscanwin); |
| 1627 |
#endif
|
| 1628 |
} |
| 1629 |
v->s.no_rounding = !get_bits(gb, 1);
|
| 1630 |
v->uvsamp = get_bits(gb, 1);
|
| 1631 |
if (v->finterpflag == 1) v->interpfrm = get_bits(gb, 1); |
| 1632 |
|
| 1633 |
switch(v->s.pict_type)
|
| 1634 |
{
|
| 1635 |
case I_TYPE: if (decode_i_picture_primary_header(v) < 0) return -1; |
| 1636 |
case P_TYPE: if (decode_p_picture_primary_header(v) < 0) return -1; |
| 1637 |
case BI_TYPE:
|
| 1638 |
case B_TYPE: if (decode_b_picture_primary_header(v) < 0) return FRAME_SKIPPED; |
| 1639 |
default: return -1; |
| 1640 |
} |
| 1641 |
} |
| 1642 |
|
| 1643 |
/** Frame header decoding, secondary part
|
| 1644 |
* @param v VC9 context
|
| 1645 |
* @return Status
|
| 1646 |
*/
|
| 1647 |
static int advanced_decode_picture_secondary_header(VC9Context *v) |
| 1648 |
{
|
| 1649 |
GetBitContext *gb = &v->s.gb; |
| 1650 |
int status = 0; |
| 1651 |
|
| 1652 |
switch(v->s.pict_type)
|
| 1653 |
{
|
| 1654 |
case P_TYPE: status = decode_p_picture_secondary_header(v); break; |
| 1655 |
case B_TYPE: status = decode_b_picture_secondary_header(v); break; |
| 1656 |
case BI_TYPE:
|
| 1657 |
case I_TYPE: status = decode_i_picture_secondary_header(v); break; |
| 1658 |
} |
| 1659 |
if (status<0) return FRAME_SKIPPED; |
| 1660 |
|
| 1661 |
/* AC Syntax */
|
| 1662 |
v->c_ac_table_index = decode012(gb); |
| 1663 |
if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
|
| 1664 |
{
|
| 1665 |
v->y_ac_table_index = decode012(gb); |
| 1666 |
} |
| 1667 |
/* DC Syntax */
|
| 1668 |
v->s.dc_table_index = decode012(gb); |
| 1669 |
|
| 1670 |
return 0; |
| 1671 |
} |
| 1672 |
#endif
|
| 1673 |
/** @} */ //End for adv_frame_hdr |
| 1674 |
|
| 1675 |
/***********************************************************************/
|
| 1676 |
/**
|
| 1677 |
* @defgroup block VC9 Block-level functions
|
| 1678 |
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
|
| 1679 |
* @todo TODO: Integrate to MpegEncContext facilities
|
| 1680 |
* @{
|
| 1681 |
*/
|
| 1682 |
|
| 1683 |
/**
|
| 1684 |
* @def GET_MQUANT
|
| 1685 |
* @brief Get macroblock-level quantizer scale
|
| 1686 |
* @warning XXX: qdiff to the frame quant, not previous quant ?
|
| 1687 |
* @fixme XXX: Don't know how to initialize mquant otherwise in last case
|
| 1688 |
*/
|
| 1689 |
#define GET_MQUANT() \
|
| 1690 |
if (v->dquantfrm) \
|
| 1691 |
{ \
|
| 1692 |
if (v->dqprofile == DQPROFILE_ALL_MBS) \
|
| 1693 |
{ \
|
| 1694 |
if (v->dqbilevel) \
|
| 1695 |
{ \
|
| 1696 |
mquant = (get_bits(gb, 1)) ? v->pq : v->altpq; \
|
| 1697 |
} \ |
| 1698 |
else \
|
| 1699 |
{ \
|
| 1700 |
mqdiff = get_bits(gb, 3); \
|
| 1701 |
if (mqdiff != 7) mquant = v->pq + mqdiff; \ |
| 1702 |
else mquant = get_bits(gb, 5); \ |
| 1703 |
} \ |
| 1704 |
} \ |
| 1705 |
else mquant = v->pq; \
|
| 1706 |
} |
| 1707 |
|
| 1708 |
/**
|
| 1709 |
* @def GET_MVDATA(_dmv_x, _dmv_y)
|
| 1710 |
* @brief Get MV differentials
|
| 1711 |
* @see MVDATA decoding from 8.3.5.2, p(1)20
|
| 1712 |
* @param _dmv_x Horizontal differential for decoded MV
|
| 1713 |
* @param _dmv_y Vertical differential for decoded MV
|
| 1714 |
* @todo TODO: Use MpegEncContext arrays to store them
|
| 1715 |
*/
|
| 1716 |
#define GET_MVDATA(_dmv_x, _dmv_y) \
|
| 1717 |
index = 1 + get_vlc2(gb, vc9_mv_diff_vlc[s->mv_table_index].table,\
|
| 1718 |
VC9_MV_DIFF_VLC_BITS, 2); \
|
| 1719 |
if (index > 36) \ |
| 1720 |
{ \
|
| 1721 |
mb_has_coeffs = 1; \
|
| 1722 |
index -= 37; \
|
| 1723 |
} \ |
| 1724 |
else mb_has_coeffs = 0; \ |
| 1725 |
s->mb_intra = 0; \
|
| 1726 |
if (!index) { _dmv_x = _dmv_y = 0; } \ |
| 1727 |
else if (index == 35) \ |
| 1728 |
{ \
|
| 1729 |
_dmv_x = get_bits(gb, v->k_x); \ |
| 1730 |
_dmv_y = get_bits(gb, v->k_y); \ |
| 1731 |
s->mb_intra = 1; \
|
| 1732 |
} \ |
| 1733 |
else \
|
| 1734 |
{ \
|
| 1735 |
index1 = index%6; \
|
| 1736 |
if (s->mspel && index1 == 5) val = 1; \ |
| 1737 |
else val = 0; \ |
| 1738 |
val = get_bits(gb, size_table[index1] - val); \ |
| 1739 |
sign = 0 - (val&1); \ |
| 1740 |
_dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
|
| 1741 |
\ |
| 1742 |
index1 = index/6; \
|
| 1743 |
if (s->mspel && index1 == 5) val = 1; \ |
| 1744 |
else val = 0; \ |
| 1745 |
val = get_bits(gb, size_table[index1] - val); \ |
| 1746 |
sign = 0 - (val&1); \ |
| 1747 |
_dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
|
| 1748 |
} |
| 1749 |
|
| 1750 |
/** Get predicted DC value
|
| 1751 |
* prediction dir: left=0, top=1
|
| 1752 |
* @param s MpegEncContext
|
| 1753 |
* @param[in] n block index in the current MB
|
| 1754 |
* @param dc_val_ptr Pointer to DC predictor
|
| 1755 |
* @param dir_ptr Prediction direction for use in AC prediction
|
| 1756 |
* @todo TODO: Actually do it the VC9 way
|
| 1757 |
* @todo TODO: Handle properly edges
|
| 1758 |
*/
|
| 1759 |
static inline int vc9_pred_dc(MpegEncContext *s, int n, |
| 1760 |
uint16_t **dc_val_ptr, int *dir_ptr)
|
| 1761 |
{
|
| 1762 |
int a, b, c, wrap, pred, scale;
|
| 1763 |
int16_t *dc_val; |
| 1764 |
static const uint16_t dcpred[31] = { |
| 1765 |
1024, 512, 341, 256, 205, 171, 146, 128, |
| 1766 |
114, 102, 93, 85, 79, 73, 68, 64, |
| 1767 |
60, 57, 54, 51, 49, 47, 45, 43, |
| 1768 |
41, 39, 38, 37, 35, 34, 33 |
| 1769 |
}; |
| 1770 |
|
| 1771 |
/* find prediction - wmv3_dc_scale always used here in fact */
|
| 1772 |
if (n < 4) scale = s->y_dc_scale; |
| 1773 |
else scale = s->c_dc_scale;
|
| 1774 |
|
| 1775 |
wrap = s->block_wrap[n]; |
| 1776 |
dc_val= s->dc_val[0] + s->block_index[n];
|
| 1777 |
|
| 1778 |
/* B C
|
| 1779 |
* A X
|
| 1780 |
*/
|
| 1781 |
a = dc_val[ - 1];
|
| 1782 |
b = dc_val[ - 1 - wrap];
|
| 1783 |
c = dc_val[ - wrap]; |
| 1784 |
|
| 1785 |
/* XXX: Rule B is used only for I and BI frames in S/M/C profile
|
| 1786 |
* with overlap filtering off
|
| 1787 |
*/
|
| 1788 |
if ((s->pict_type == I_TYPE || s->pict_type == BI_TYPE) &&
|
| 1789 |
1 /* XXX: overlap filtering off */) |
| 1790 |
{
|
| 1791 |
/* Set outer values */
|
| 1792 |
if (s->first_slice_line && n!=2) b=c=dcpred[scale]; |
| 1793 |
if (s->mb_x == 0) b=a=dcpred[scale]; |
| 1794 |
} |
| 1795 |
else
|
| 1796 |
{
|
| 1797 |
/* Set outer values */
|
| 1798 |
if (s->first_slice_line && n!=2) b=c=0; |
| 1799 |
if (s->mb_x == 0) b=a=0; |
| 1800 |
|
| 1801 |
/* XXX: Rule A needs to know if blocks are inter or intra :/ */
|
| 1802 |
if (0) |
| 1803 |
{
|
| 1804 |
/* update predictor */
|
| 1805 |
*dc_val_ptr = &dc_val[0];
|
| 1806 |
dir_ptr = 0;
|
| 1807 |
return a;
|
| 1808 |
} |
| 1809 |
} |
| 1810 |
|
| 1811 |
if (abs(a - b) <= abs(b - c)) {
|
| 1812 |
pred = c; |
| 1813 |
*dir_ptr = 1;
|
| 1814 |
} else {
|
| 1815 |
pred = a; |
| 1816 |
*dir_ptr = 0;
|
| 1817 |
} |
| 1818 |
|
| 1819 |
/* update predictor */
|
| 1820 |
*dc_val_ptr = &dc_val[0];
|
| 1821 |
return pred;
|
| 1822 |
} |
| 1823 |
|
| 1824 |
/** Decode one block, inter or intra
|
| 1825 |
* @param v The VC9 context
|
| 1826 |
* @param block 8x8 DCT block
|
| 1827 |
* @param n Block index in the current MB (<4=>luma)
|
| 1828 |
* @param coded If the block is coded
|
| 1829 |
* @param mquant Quantizer step for the current block
|
| 1830 |
* @see Inter TT: Table 21, p73 + p91-85
|
| 1831 |
* @see Intra TT: Table 20, p72 + p(1)05-(1)07
|
| 1832 |
* @todo TODO: Process the blocks
|
| 1833 |
* @todo TODO: Use M$ MPEG-4 cbp prediction
|
| 1834 |
*/
|
| 1835 |
int vc9_decode_block(VC9Context *v, DCTELEM block[64], int n, int coded, int mquant) |
| 1836 |
{
|
| 1837 |
GetBitContext *gb = &v->s.gb; |
| 1838 |
MpegEncContext *s = &v->s; |
| 1839 |
int ttblk; /* Transform Type per Block */ |
| 1840 |
int subblkpat; /* Sub-block Transform Type Pattern */ |
| 1841 |
int dc_pred_dir; /* Direction of the DC prediction used */ |
| 1842 |
int run_diff, i;
|
| 1843 |
|
| 1844 |
/* XXX: Guard against dumb values of mquant */
|
| 1845 |
mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant ); |
| 1846 |
|
| 1847 |
/* Set DC scale - y and c use the same */
|
| 1848 |
s->y_dc_scale = s->y_dc_scale_table[mquant]; |
| 1849 |
s->c_dc_scale = s->c_dc_scale_table[mquant]; |
| 1850 |
|
| 1851 |
if (s->mb_intra)
|
| 1852 |
{
|
| 1853 |
int dcdiff;
|
| 1854 |
uint16_t *dc_val; |
| 1855 |
|
| 1856 |
/* Get DC differential */
|
| 1857 |
if (n < 4) { |
| 1858 |
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
| 1859 |
} else {
|
| 1860 |
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
| 1861 |
} |
| 1862 |
if (dcdiff < 0){ |
| 1863 |
av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
|
| 1864 |
return -1; |
| 1865 |
} |
| 1866 |
if (dcdiff)
|
| 1867 |
{
|
| 1868 |
if (dcdiff == 119 /* ESC index value */) |
| 1869 |
{
|
| 1870 |
/* TODO: Optimize */
|
| 1871 |
if (mquant == 1) dcdiff = get_bits(gb, 10); |
| 1872 |
else if (mquant == 2) dcdiff = get_bits(gb, 9); |
| 1873 |
else dcdiff = get_bits(gb, 8); |
| 1874 |
} |
| 1875 |
else
|
| 1876 |
{
|
| 1877 |
if (mquant == 1) |
| 1878 |
dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3; |
| 1879 |
else if (mquant == 2) |
| 1880 |
dcdiff = (dcdiff<<1) + get_bits(gb, 1) - 1; |
| 1881 |
} |
| 1882 |
if (get_bits(gb, 1)) |
| 1883 |
dcdiff = -dcdiff; |
| 1884 |
} |
| 1885 |
|
| 1886 |
/* Prediction */
|
| 1887 |
dcdiff += vc9_pred_dc(s, n, &dc_val, &dc_pred_dir); |
| 1888 |
*dc_val = dcdiff; |
| 1889 |
/* Store the quantized DC coeff, used for prediction */
|
| 1890 |
|
| 1891 |
if (n < 4) { |
| 1892 |
block[0] = dcdiff * s->y_dc_scale;
|
| 1893 |
} else {
|
| 1894 |
block[0] = dcdiff * s->c_dc_scale;
|
| 1895 |
} |
| 1896 |
if (block[0] < 0) { |
| 1897 |
#if TRACE
|
| 1898 |
//av_log(s->avctx, AV_LOG_ERROR, "DC=%i<0\n", dcdiff);
|
| 1899 |
#endif
|
| 1900 |
//return -1;
|
| 1901 |
} |
| 1902 |
/* Skip ? */
|
| 1903 |
run_diff = 0;
|
| 1904 |
i = 0;
|
| 1905 |
if (!coded) {
|
| 1906 |
goto not_coded;
|
| 1907 |
} |
| 1908 |
} |
| 1909 |
else
|
| 1910 |
{
|
| 1911 |
mquant = v->pq; |
| 1912 |
|
| 1913 |
/* Get TTBLK */
|
| 1914 |
if (v->ttmb < 8) /* per block */ |
| 1915 |
ttblk = get_vlc2(gb, vc9_ttblk_vlc[v->tt_index].table, VC9_TTBLK_VLC_BITS, 2);
|
| 1916 |
else /* Per frame */ |
| 1917 |
ttblk = 0; //FIXME, depends on ttfrm |
| 1918 |
|
| 1919 |
/* Get SUBBLKPAT */
|
| 1920 |
if (ttblk == v->ttblk4x4) /* 4x4 transform for that qp value */ |
| 1921 |
subblkpat = 1+get_vlc2(gb, vc9_subblkpat_vlc[v->tt_index].table,
|
| 1922 |
VC9_SUBBLKPAT_VLC_BITS, 2);
|
| 1923 |
else /* All others: 8x8, 4x8, 8x4 */ |
| 1924 |
subblkpat = decode012(gb); |
| 1925 |
} |
| 1926 |
|
| 1927 |
//TODO AC Decoding
|
| 1928 |
i = 63; //XXX: nothing done yet |
| 1929 |
|
| 1930 |
|
| 1931 |
not_coded:
|
| 1932 |
if (s->mb_intra) {
|
| 1933 |
mpeg4_pred_ac(s, block, n, dc_pred_dir); |
| 1934 |
if (s->ac_pred) {
|
| 1935 |
i = 63; /* XXX: not optimal */ |
| 1936 |
} |
| 1937 |
} |
| 1938 |
if(i>0) i=63; //FIXME/XXX optimize |
| 1939 |
s->block_last_index[n] = i; |
| 1940 |
return 0; |
| 1941 |
} |
| 1942 |
|
| 1943 |
/** @} */ //End for group block |
| 1944 |
|
| 1945 |
/***********************************************************************/
|
| 1946 |
/**
|
| 1947 |
* @defgroup std_mb VC9 Macroblock-level functions in Simple/Main Profiles
|
| 1948 |
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
|
| 1949 |
* @todo TODO: Integrate to MpegEncContext facilities
|
| 1950 |
* @{
|
| 1951 |
*/
|
| 1952 |
|
| 1953 |
static inline int vc9_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr) |
| 1954 |
{
|
| 1955 |
int xy, wrap, pred, a, b, c;
|
| 1956 |
|
| 1957 |
xy = s->block_index[n]; |
| 1958 |
wrap = s->b8_stride; |
| 1959 |
|
| 1960 |
/* B C
|
| 1961 |
* A X
|
| 1962 |
*/
|
| 1963 |
a = s->coded_block[xy - 1 ];
|
| 1964 |
b = s->coded_block[xy - 1 - wrap];
|
| 1965 |
c = s->coded_block[xy - wrap]; |
| 1966 |
|
| 1967 |
if (b == c) {
|
| 1968 |
pred = a; |
| 1969 |
} else {
|
| 1970 |
pred = c; |
| 1971 |
} |
| 1972 |
|
| 1973 |
/* store value */
|
| 1974 |
*coded_block_ptr = &s->coded_block[xy]; |
| 1975 |
|
| 1976 |
return pred;
|
| 1977 |
} |
| 1978 |
|
| 1979 |
/** Decode one I-frame MB (in Simple/Main profile)
|
| 1980 |
* @todo TODO: Extend to AP
|
| 1981 |
*/
|
| 1982 |
int vc9_decode_i_mb(VC9Context *v, DCTELEM block[6][64]) |
| 1983 |
{
|
| 1984 |
int i, cbp, val;
|
| 1985 |
uint8_t *coded_val; |
| 1986 |
// uint32_t * const mb_type_ptr= &v->s.current_picture.mb_type[ v->s.mb_x + v->s.mb_y*v->s.mb_stride ];
|
| 1987 |
|
| 1988 |
v->s.mb_intra = 1;
|
| 1989 |
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
|
| 1990 |
if (cbp < 0) return -1; |
| 1991 |
v->s.ac_pred = get_bits(&v->s.gb, 1);
|
| 1992 |
|
| 1993 |
for (i=0; i<6; i++) |
| 1994 |
{
|
| 1995 |
val = ((cbp >> (5 - i)) & 1); |
| 1996 |
if (i < 4) { |
| 1997 |
int pred = vc9_coded_block_pred(&v->s, i, &coded_val);
|
| 1998 |
val = val ^ pred; |
| 1999 |
*coded_val = val; |
| 2000 |
} |
| 2001 |
cbp |= val << (5 - i);
|
| 2002 |
if (vc9_decode_block(v, block[i], i, val, v->pq) < 0) //FIXME Should be mquant |
| 2003 |
{
|
| 2004 |
av_log(v->s.avctx, AV_LOG_ERROR, |
| 2005 |
"\nerror while decoding block: %d x %d (%d)\n", v->s.mb_x, v->s.mb_y, i);
|
| 2006 |
return -1; |
| 2007 |
} |
| 2008 |
} |
| 2009 |
return 0; |
| 2010 |
} |
| 2011 |
|
| 2012 |
/** Decode one P-frame MB (in Simple/Main profile)
|
| 2013 |
* @todo TODO: Extend to AP
|
| 2014 |
* @fixme FIXME: DC value for inter blocks not set
|
| 2015 |
*/
|
| 2016 |
int vc9_decode_p_mb(VC9Context *v, DCTELEM block[6][64]) |
| 2017 |
{
|
| 2018 |
MpegEncContext *s = &v->s; |
| 2019 |
GetBitContext *gb = &s->gb; |
| 2020 |
int i, mb_offset = s->mb_x + s->mb_y*s->mb_width; /* XXX: mb_stride */ |
| 2021 |
int cbp; /* cbp decoding stuff */ |
| 2022 |
int hybrid_pred; /* Prediction types */ |
| 2023 |
int mv_mode_bit = 0; |
| 2024 |
int mqdiff, mquant; /* MB quantization */ |
| 2025 |
int ttmb; /* MB Transform type */ |
| 2026 |
int status;
|
| 2027 |
uint8_t *coded_val; |
| 2028 |
|
| 2029 |
static const int size_table[6] = { 0, 2, 3, 4, 5, 8 }, |
| 2030 |
offset_table[6] = { 0, 1, 3, 7, 15, 31 }; |
| 2031 |
int mb_has_coeffs = 1; /* last_flag */ |
| 2032 |
int dmv_x, dmv_y; /* Differential MV components */ |
| 2033 |
int index, index1; /* LUT indices */ |
| 2034 |
int val, sign; /* temp values */ |
| 2035 |
|
| 2036 |
mquant = v->pq; /* Loosy initialization */
|
| 2037 |
|
| 2038 |
if (v->mv_type_mb_plane.is_raw)
|
| 2039 |
v->mv_type_mb_plane.data[mb_offset] = get_bits(gb, 1);
|
| 2040 |
if (v->skip_mb_plane.is_raw)
|
| 2041 |
v->skip_mb_plane.data[mb_offset] = get_bits(gb, 1);
|
| 2042 |
if (!mv_mode_bit) /* 1MV mode */ |
| 2043 |
{
|
| 2044 |
if (!v->skip_mb_plane.data[mb_offset])
|
| 2045 |
{
|
| 2046 |
GET_MVDATA(dmv_x, dmv_y); |
| 2047 |
|
| 2048 |
/* hybrid mv pred, 8.3.5.3.4 */
|
| 2049 |
if (v->mv_mode == MV_PMODE_1MV ||
|
| 2050 |
v->mv_mode == MV_PMODE_MIXED_MV) |
| 2051 |
hybrid_pred = get_bits(gb, 1);
|
| 2052 |
/* FIXME Set DC val for inter block ? */
|
| 2053 |
if (s->mb_intra && !mb_has_coeffs)
|
| 2054 |
{
|
| 2055 |
GET_MQUANT(); |
| 2056 |
s->ac_pred = get_bits(gb, 1);
|
| 2057 |
/* XXX: how to handle cbp ? */
|
| 2058 |
cbp = 0;
|
| 2059 |
for (i=0; i<6; i++) |
| 2060 |
{
|
| 2061 |
s->coded_block[s->block_index[i]] = 0;
|
| 2062 |
vc9_decode_block(v, block[i], i, 0, mquant);
|
| 2063 |
} |
| 2064 |
return 0; |
| 2065 |
} |
| 2066 |
else if (mb_has_coeffs) |
| 2067 |
{
|
| 2068 |
if (s->mb_intra) s->ac_pred = get_bits(gb, 1); |
| 2069 |
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC9_CBPCY_P_VLC_BITS, 2);
|
| 2070 |
GET_MQUANT(); |
| 2071 |
} |
| 2072 |
else
|
| 2073 |
{
|
| 2074 |
mquant = v->pq; |
| 2075 |
/* XXX: how to handle cbp ? */
|
| 2076 |
/* XXX: how to set values for following predictions ? */
|
| 2077 |
cbp = 0;
|
| 2078 |
} |
| 2079 |
|
| 2080 |
if (!v->ttmbf)
|
| 2081 |
ttmb = get_vlc2(gb, vc9_ttmb_vlc[v->tt_index].table, |
| 2082 |
VC9_TTMB_VLC_BITS, 12);
|
| 2083 |
|
| 2084 |
for (i=0; i<6; i++) |
| 2085 |
{
|
| 2086 |
val = ((cbp >> (5 - i)) & 1); |
| 2087 |
if (i < 4) { |
| 2088 |
int pred = vc9_coded_block_pred(&v->s, i, &coded_val);
|
| 2089 |
val = val ^ pred; |
| 2090 |
*coded_val = val; |
| 2091 |
} |
| 2092 |
vc9_decode_block(v, block[i], i, val, mquant); //FIXME
|
| 2093 |
} |
| 2094 |
} |
| 2095 |
else //Skipped |
| 2096 |
{
|
| 2097 |
/* hybrid mv pred, 8.3.5.3.4 */
|
| 2098 |
if (v->mv_mode == MV_PMODE_1MV ||
|
| 2099 |
v->mv_mode == MV_PMODE_MIXED_MV) |
| 2100 |
hybrid_pred = get_bits(gb, 1);
|
| 2101 |
|
| 2102 |
/* TODO: blah */
|
| 2103 |
return 0; |
| 2104 |
} |
| 2105 |
} //1MV mode
|
| 2106 |
else //4MV mode |
| 2107 |
{
|
| 2108 |
if (!v->skip_mb_plane.data[mb_offset] /* unskipped MB */) |
| 2109 |
{
|
| 2110 |
/* Get CBPCY */
|
| 2111 |
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC9_CBPCY_P_VLC_BITS, 2);
|
| 2112 |
for (i=0; i<6; i++) |
| 2113 |
{
|
| 2114 |
val = ((cbp >> (5 - i)) & 1); |
| 2115 |
if (i < 4) { |
| 2116 |
int pred = vc9_coded_block_pred(&v->s, i, &coded_val);
|
| 2117 |
val = val ^ pred; |
| 2118 |
*coded_val = val; |
| 2119 |
} |
| 2120 |
if (i<4 && val) |
| 2121 |
{
|
| 2122 |
GET_MVDATA(dmv_x, dmv_y); |
| 2123 |
} |
| 2124 |
if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */) |
| 2125 |
hybrid_pred = get_bits(gb, 1);
|
| 2126 |
GET_MQUANT(); |
| 2127 |
|
| 2128 |
if (s->mb_intra /* One of the 4 blocks is intra */ && |
| 2129 |
index /* non-zero pred for that block */)
|
| 2130 |
s->ac_pred = get_bits(gb, 1);
|
| 2131 |
if (!v->ttmbf)
|
| 2132 |
ttmb = get_vlc2(gb, vc9_ttmb_vlc[v->tt_index].table, |
| 2133 |
VC9_TTMB_VLC_BITS, 12);
|
| 2134 |
status = vc9_decode_block(v, block[i], i, val, mquant); |
| 2135 |
} |
| 2136 |
return status;
|
| 2137 |
} |
| 2138 |
else //Skipped MB |
| 2139 |
{
|
| 2140 |
/* XXX: Skipped => cbp=0 and mquant doesn't matter ? */
|
| 2141 |
for (i=0; i<4; i++) |
| 2142 |
{
|
| 2143 |
if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */) |
| 2144 |
hybrid_pred = get_bits(gb, 1);
|
| 2145 |
vc9_decode_block(v, block[i], i, 0, v->pq); //FIXME |
| 2146 |
} |
| 2147 |
vc9_decode_block(v, block[4], 4, 0, v->pq); //FIXME |
| 2148 |
vc9_decode_block(v, block[5], 5, 0, v->pq); //FIXME |
| 2149 |
/* TODO: blah */
|
| 2150 |
return 0; |
| 2151 |
} |
| 2152 |
} |
| 2153 |
|
| 2154 |
/* Should never happen */
|
| 2155 |
return -1; |
| 2156 |
} |
| 2157 |
|
| 2158 |
/** Decode one B-frame MB (in Simple/Main profile)
|
| 2159 |
* @todo TODO: Extend to AP
|
| 2160 |
* @warning XXX: Used for decoding BI MBs
|
| 2161 |
* @fixme FIXME: DC value for inter blocks not set
|
| 2162 |
*/
|
| 2163 |
int vc9_decode_b_mb(VC9Context *v, DCTELEM block[6][64]) |
| 2164 |
{
|
| 2165 |
MpegEncContext *s = &v->s; |
| 2166 |
GetBitContext *gb = &v->s.gb; |
| 2167 |
int mb_offset, i /* MB / B postion information */; |
| 2168 |
int b_mv_type = BMV_TYPE_BACKWARD;
|
| 2169 |
int mquant, mqdiff; /* MB quant stuff */ |
| 2170 |
int ttmb; /* MacroBlock transform type */ |
| 2171 |
|
| 2172 |
static const int size_table[6] = { 0, 2, 3, 4, 5, 8 }, |
| 2173 |
offset_table[6] = { 0, 1, 3, 7, 15, 31 }; |
| 2174 |
int mb_has_coeffs = 1; /* last_flag */ |
| 2175 |
int dmv1_x, dmv1_y, dmv2_x, dmv2_y; /* Differential MV components */ |
| 2176 |
int index, index1; /* LUT indices */ |
| 2177 |
int val, sign; /* MVDATA temp values */ |
| 2178 |
|
| 2179 |
mb_offset = s->mb_width*s->mb_y + s->mb_x; //FIXME: arrays aren't using stride
|
| 2180 |
|
| 2181 |
if (v->direct_mb_plane.is_raw)
|
| 2182 |
v->direct_mb_plane.data[mb_offset] = get_bits(gb, 1);
|
| 2183 |
if (v->skip_mb_plane.is_raw)
|
| 2184 |
v->skip_mb_plane.data[mb_offset] = get_bits(gb, 1);
|
| 2185 |
|
| 2186 |
if (!v->direct_mb_plane.data[mb_offset])
|
| 2187 |
{
|
| 2188 |
if (v->skip_mb_plane.data[mb_offset])
|
| 2189 |
{
|
| 2190 |
b_mv_type = decode012(gb); |
| 2191 |
if (v->bfraction > 420 /*1/2*/ && |
| 2192 |
b_mv_type < 3) b_mv_type = 1-b_mv_type; |
| 2193 |
} |
| 2194 |
else
|
| 2195 |
{
|
| 2196 |
GET_MVDATA(dmv1_x, dmv1_y); |
| 2197 |
if (!s->mb_intra /* b_mv1 tells not intra */) |
| 2198 |
{
|
| 2199 |
b_mv_type = decode012(gb); |
| 2200 |
if (v->bfraction > 420 /*1/2*/ && |
| 2201 |
b_mv_type < 3) b_mv_type = 1-b_mv_type; |
| 2202 |
} |
| 2203 |
} |
| 2204 |
} |
| 2205 |
if (!v->skip_mb_plane.data[mb_offset])
|
| 2206 |
{
|
| 2207 |
if (mb_has_coeffs /* BMV1 == "last" */) |
| 2208 |
{
|
| 2209 |
GET_MQUANT(); |
| 2210 |
if (s->mb_intra /* intra mb */) |
| 2211 |
s->ac_pred = get_bits(gb, 1);
|
| 2212 |
} |
| 2213 |
else
|
| 2214 |
{
|
| 2215 |
/* if bmv1 tells MVs are interpolated */
|
| 2216 |
if (b_mv_type == BMV_TYPE_INTERPOLATED)
|
| 2217 |
{
|
| 2218 |
GET_MVDATA(dmv2_x, dmv2_y); |
| 2219 |
mquant = v->pq; //FIXME: initialization not necessary ?
|
| 2220 |
} |
| 2221 |
/* GET_MVDATA has reset some stuff */
|
| 2222 |
if (mb_has_coeffs /* b_mv2 == "last" */) |
| 2223 |
{
|
| 2224 |
if (s->mb_intra /* intra_mb */) |
| 2225 |
s->ac_pred = get_bits(gb, 1);
|
| 2226 |
GET_MQUANT(); |
| 2227 |
} |
| 2228 |
} |
| 2229 |
} |
| 2230 |
|
| 2231 |
//End1
|
| 2232 |
if (v->ttmbf)
|
| 2233 |
ttmb = get_vlc2(gb, vc9_ttmb_vlc[v->tt_index].table, |
| 2234 |
VC9_TTMB_VLC_BITS, 12);
|
| 2235 |
|
| 2236 |
//End2
|
| 2237 |
for (i=0; i<6; i++) |
| 2238 |
{
|
| 2239 |
vc9_decode_block(v, block[i], i, 0 /*cbp[i]*/, mquant); //FIXME |
| 2240 |
} |
| 2241 |
return 0; |
| 2242 |
} |
| 2243 |
|
| 2244 |
/** Decode all MBs for an I frame in Simple/Main profile
|
| 2245 |
* @todo TODO: Move out of the loop the picture type case?
|
| 2246 |
(branch prediction should help there though)
|
| 2247 |
*/
|
| 2248 |
static int standard_decode_mbs(VC9Context *v) |
| 2249 |
{
|
| 2250 |
MpegEncContext *s = &v->s; |
| 2251 |
|
| 2252 |
/* Set transform type info depending on pq */
|
| 2253 |
if (v->pq < 5) |
| 2254 |
{
|
| 2255 |
v->tt_index = 0;
|
| 2256 |
v->ttblk4x4 = 3;
|
| 2257 |
} |
| 2258 |
else if (v->pq < 13) |
| 2259 |
{
|
| 2260 |
v->tt_index = 1;
|
| 2261 |
v->ttblk4x4 = 3;
|
| 2262 |
} |
| 2263 |
else
|
| 2264 |
{
|
| 2265 |
v->tt_index = 2;
|
| 2266 |
v->ttblk4x4 = 2;
|
| 2267 |
} |
| 2268 |
|
| 2269 |
if (s->pict_type != I_TYPE)
|
| 2270 |
{
|
| 2271 |
/* Select proper long MV range */
|
| 2272 |
switch (v->mvrange)
|
| 2273 |
{
|
| 2274 |
case 1: v->k_x = 10; v->k_y = 9; break; |
| 2275 |
case 2: v->k_x = 12; v->k_y = 10; break; |
| 2276 |
case 3: v->k_x = 13; v->k_y = 11; break; |
| 2277 |
default: /*case 0 too */ v->k_x = 9; v->k_y = 8; break; |
| 2278 |
} |
| 2279 |
|
| 2280 |
s->mspel = v->mv_mode & 1; //MV_PMODE is HPEL |
| 2281 |
v->k_x -= s->mspel; |
| 2282 |
v->k_y -= s->mspel; |
| 2283 |
} |
| 2284 |
|
| 2285 |
for (s->mb_y=0; s->mb_y<s->mb_height; s->mb_y++) |
| 2286 |
{
|
| 2287 |
for (s->mb_x=0; s->mb_x<s->mb_width; s->mb_x++) |
| 2288 |
{
|
| 2289 |
//FIXME Get proper MB DCTELEM
|
| 2290 |
//TODO Move out of the loop
|
| 2291 |
switch (s->pict_type)
|
| 2292 |
{
|
| 2293 |
case I_TYPE: vc9_decode_i_mb(v, s->block); break; |
| 2294 |
case P_TYPE: vc9_decode_p_mb(v, s->block); break; |
| 2295 |
case BI_TYPE:
|
| 2296 |
case B_TYPE: vc9_decode_b_mb(v, s->block); break; |
| 2297 |
} |
| 2298 |
} |
| 2299 |
//Add a check for overconsumption ?
|
| 2300 |
} |
| 2301 |
return 0; |
| 2302 |
} |
| 2303 |
/** @} */ //End for group std_mb |
| 2304 |
|
| 2305 |
#if HAS_ADVANCED_PROFILE
|
| 2306 |
/***********************************************************************/
|
| 2307 |
/**
|
| 2308 |
* @defgroup adv_mb VC9 Macroblock-level functions in Advanced Profile
|
| 2309 |
* @todo TODO: Integrate to MpegEncContext facilities
|
| 2310 |
* @todo TODO: Code P, B and BI
|
| 2311 |
* @{
|
| 2312 |
*/
|
| 2313 |
static int advanced_decode_i_mbs(VC9Context *v) |
| 2314 |
{
|
| 2315 |
MpegEncContext *s = &v->s; |
| 2316 |
GetBitContext *gb = &v->s.gb; |
| 2317 |
int mqdiff, mquant, mb_offset = 0, over_flags_mb = 0; |
| 2318 |
|
| 2319 |
for (s->mb_y=0; s->mb_y<s->mb_height; s->mb_y++) |
| 2320 |
{
|
| 2321 |
for (s->mb_x=0; s->mb_x<s->mb_width; s->mb_x++) |
| 2322 |
{
|
| 2323 |
if (v->ac_pred_plane.is_raw)
|
| 2324 |
s->ac_pred = get_bits(gb, 1);
|
| 2325 |
else
|
| 2326 |
s->ac_pred = v->ac_pred_plane.data[mb_offset]; |
| 2327 |
if (v->condover == 3 && v->over_flags_plane.is_raw) |
| 2328 |
over_flags_mb = get_bits(gb, 1);
|
| 2329 |
GET_MQUANT(); |
| 2330 |
|
| 2331 |
/* TODO: lots */
|
| 2332 |
} |
| 2333 |
mb_offset++; |
| 2334 |
} |
| 2335 |
return 0; |
| 2336 |
} |
| 2337 |
/** @} */ //End for group adv_mb |
| 2338 |
#endif
|
| 2339 |
|
| 2340 |
/** Initialize a VC9/WMV3 decoder
|
| 2341 |
* @todo TODO: Handle VC-9 IDUs (Transport level?)
|
| 2342 |
* @todo TODO: Decypher remaining bits in extra_data
|
| 2343 |
*/
|
| 2344 |
static int vc9_decode_init(AVCodecContext *avctx) |
| 2345 |
{
|
| 2346 |
VC9Context *v = avctx->priv_data; |
| 2347 |
MpegEncContext *s = &v->s; |
| 2348 |
GetBitContext gb; |
| 2349 |
|
| 2350 |
if (!avctx->extradata_size || !avctx->extradata) return -1; |
| 2351 |
avctx->pix_fmt = PIX_FMT_YUV420P; |
| 2352 |
v->s.avctx = avctx; |
| 2353 |
|
| 2354 |
if(ff_h263_decode_init(avctx) < 0) |
| 2355 |
return -1; |
| 2356 |
if (vc9_init_common(v) < 0) return -1; |
| 2357 |
|
| 2358 |
av_log(avctx, AV_LOG_INFO, "This decoder is not supposed to produce picture. Dont report this as a bug!\n");
|
| 2359 |
|
| 2360 |
avctx->coded_width = avctx->width; |
| 2361 |
avctx->coded_height = avctx->height; |
| 2362 |
if (avctx->codec_id == CODEC_ID_WMV3)
|
| 2363 |
{
|
| 2364 |
int count = 0; |
| 2365 |
|
| 2366 |
// looks like WMV3 has a sequence header stored in the extradata
|
| 2367 |
// advanced sequence header may be before the first frame
|
| 2368 |
// the last byte of the extradata is a version number, 1 for the
|
| 2369 |
// samples we can decode
|
| 2370 |
|
| 2371 |
init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
|
| 2372 |
|
| 2373 |
if (decode_sequence_header(avctx, &gb) < 0) |
| 2374 |
return -1; |
| 2375 |
|
| 2376 |
count = avctx->extradata_size*8 - get_bits_count(&gb);
|
| 2377 |
if (count>0) |
| 2378 |
{
|
| 2379 |
av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
|
| 2380 |
count, get_bits(&gb, count)); |
| 2381 |
} |
| 2382 |
else if (count < 0) |
| 2383 |
{
|
| 2384 |
av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
|
| 2385 |
} |
| 2386 |
} |
| 2387 |
avctx->has_b_frames= !!(avctx->max_b_frames); |
| 2388 |
|
| 2389 |
s->mb_width = (avctx->coded_width+15)>>4; |
| 2390 |
s->mb_height = (avctx->coded_height+15)>>4; |
| 2391 |
|
| 2392 |
/* Allocate mb bitplanes */
|
| 2393 |
if (alloc_bitplane(&v->mv_type_mb_plane, s->mb_width, s->mb_height) < 0) |
| 2394 |
return -1; |
| 2395 |
if (alloc_bitplane(&v->mv_type_mb_plane, s->mb_width, s->mb_height) < 0) |
| 2396 |
return -1; |
| 2397 |
if (alloc_bitplane(&v->skip_mb_plane, s->mb_width, s->mb_height) < 0) |
| 2398 |
return -1; |
| 2399 |
if (alloc_bitplane(&v->direct_mb_plane, s->mb_width, s->mb_height) < 0) |
| 2400 |
return -1; |
| 2401 |
|
| 2402 |
/* For predictors */
|
| 2403 |
v->previous_line_cbpcy = (uint8_t *)av_malloc(s->mb_stride*4);
|
| 2404 |
if (!v->previous_line_cbpcy) return -1; |
| 2405 |
|
| 2406 |
#if HAS_ADVANCED_PROFILE
|
| 2407 |
if (v->profile == PROFILE_ADVANCED)
|
| 2408 |
{
|
| 2409 |
if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0) |
| 2410 |
return -1; |
| 2411 |
if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0) |
| 2412 |
return -1; |
| 2413 |
} |
| 2414 |
#endif
|
| 2415 |
|
| 2416 |
return 0; |
| 2417 |
} |
| 2418 |
|
| 2419 |
/** Decode a VC9/WMV3 frame
|
| 2420 |
* @todo TODO: Handle VC-9 IDUs (Transport level?)
|
| 2421 |
* @warning Initial try at using MpegEncContext stuff
|
| 2422 |
*/
|
| 2423 |
static int vc9_decode_frame(AVCodecContext *avctx, |
| 2424 |
void *data, int *data_size, |
| 2425 |
uint8_t *buf, int buf_size)
|
| 2426 |
{
|
| 2427 |
VC9Context *v = avctx->priv_data; |
| 2428 |
MpegEncContext *s = &v->s; |
| 2429 |
int ret = FRAME_SKIPPED, len;
|
| 2430 |
AVFrame *pict = data; |
| 2431 |
uint8_t *tmp_buf; |
| 2432 |
v->s.avctx = avctx; |
| 2433 |
|
| 2434 |
//buf_size = 0 -> last frame
|
| 2435 |
if (!buf_size) return 0; |
| 2436 |
|
| 2437 |
len = avpicture_get_size(avctx->pix_fmt, avctx->width, |
| 2438 |
avctx->height); |
| 2439 |
tmp_buf = (uint8_t *)av_mallocz(len); |
| 2440 |
avpicture_fill((AVPicture *)pict, tmp_buf, avctx->pix_fmt, |
| 2441 |
avctx->width, avctx->height); |
| 2442 |
|
| 2443 |
if (avctx->codec_id == CODEC_ID_VC9)
|
| 2444 |
{
|
| 2445 |
#if 0
|
| 2446 |
// search for IDU's
|
| 2447 |
// FIXME
|
| 2448 |
uint32_t scp = 0;
|
| 2449 |
int scs = 0, i = 0;
|
| 2450 |
|
| 2451 |
while (i < buf_size)
|
| 2452 |
{
|
| 2453 |
for (; i < buf_size && scp != 0x000001; i++)
|
| 2454 |
scp = ((scp<<8)|buf[i])&0xffffff;
|
| 2455 |
|
| 2456 |
if (scp != 0x000001)
|
| 2457 |
break; // eof ?
|
| 2458 |
|
| 2459 |
scs = buf[i++];
|
| 2460 |
|
| 2461 |
init_get_bits(gb, buf+i, (buf_size-i)*8);
|
| 2462 |
|
| 2463 |
switch(scs)
|
| 2464 |
{
|
| 2465 |
case 0x0A: //Sequence End Code
|
| 2466 |
return 0;
|
| 2467 |
case 0x0B: //Slice Start Code
|
| 2468 |
av_log(avctx, AV_LOG_ERROR, "Slice coding not supported\n");
|
| 2469 |
return -1;
|
| 2470 |
case 0x0C: //Field start code
|
| 2471 |
av_log(avctx, AV_LOG_ERROR, "Interlaced coding not supported\n");
|
| 2472 |
return -1;
|
| 2473 |
case 0x0D: //Frame start code
|
| 2474 |
break;
|
| 2475 |
case 0x0E: //Entry point Start Code
|
| 2476 |
if (v->profile < PROFILE_ADVANCED)
|
| 2477 |
av_log(avctx, AV_LOG_ERROR,
|
| 2478 |
"Found an entry point in profile %i\n", v->profile);
|
| 2479 |
advanced_entry_point_process(avctx, gb);
|
| 2480 |
break;
|
| 2481 |
case 0x0F: //Sequence header Start Code
|
| 2482 |
decode_sequence_header(avctx, gb);
|
| 2483 |
break;
|
| 2484 |
default:
|
| 2485 |
av_log(avctx, AV_LOG_ERROR,
|
| 2486 |
"Unsupported IDU suffix %lX\n", scs);
|
| 2487 |
}
|
| 2488 |
|
| 2489 |
i += get_bits_count(gb)*8;
|
| 2490 |
}
|
| 2491 |
#else
|
| 2492 |
av_abort(); |
| 2493 |
#endif
|
| 2494 |
} |
| 2495 |
else
|
| 2496 |
init_get_bits(&v->s.gb, buf, buf_size*8);
|
| 2497 |
|
| 2498 |
s->flags= avctx->flags; |
| 2499 |
s->flags2= avctx->flags2; |
| 2500 |
|
| 2501 |
/* no supplementary picture */
|
| 2502 |
if (buf_size == 0) { |
| 2503 |
/* special case for last picture */
|
| 2504 |
if (s->low_delay==0 && s->next_picture_ptr) { |
| 2505 |
*pict= *(AVFrame*)s->next_picture_ptr; |
| 2506 |
s->next_picture_ptr= NULL;
|
| 2507 |
|
| 2508 |
*data_size = sizeof(AVFrame);
|
| 2509 |
} |
| 2510 |
|
| 2511 |
return 0; |
| 2512 |
} |
| 2513 |
|
| 2514 |
//No IDU - we mimic ff_h263_decode_frame
|
| 2515 |
s->bitstream_buffer_size=0;
|
| 2516 |
|
| 2517 |
if (!s->context_initialized) {
|
| 2518 |
if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix |
| 2519 |
return -1; |
| 2520 |
} |
| 2521 |
|
| 2522 |
//we need to set current_picture_ptr before reading the header, otherwise we cant store anyting im there
|
| 2523 |
if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){ |
| 2524 |
s->current_picture_ptr= &s->picture[ff_find_unused_picture(s, 0)];
|
| 2525 |
} |
| 2526 |
#if HAS_ADVANCED_PROFILE
|
| 2527 |
if (v->profile == PROFILE_ADVANCED)
|
| 2528 |
ret= advanced_decode_picture_primary_header(v); |
| 2529 |
else
|
| 2530 |
#endif
|
| 2531 |
ret= standard_decode_picture_primary_header(v); |
| 2532 |
if (ret == FRAME_SKIPPED) return buf_size; |
| 2533 |
/* skip if the header was thrashed */
|
| 2534 |
if (ret < 0){ |
| 2535 |
av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
|
| 2536 |
return -1; |
| 2537 |
} |
| 2538 |
|
| 2539 |
//No bug workaround yet, no DCT conformance
|
| 2540 |
|
| 2541 |
//WMV9 does have resized images
|
| 2542 |
if (v->profile < PROFILE_ADVANCED && v->multires){
|
| 2543 |
//Parse context stuff in here, don't know how appliable it is
|
| 2544 |
} |
| 2545 |
//Not sure about context initialization
|
| 2546 |
|
| 2547 |
// for hurry_up==5
|
| 2548 |
s->current_picture.pict_type= s->pict_type; |
| 2549 |
s->current_picture.key_frame= s->pict_type == I_TYPE; |
| 2550 |
|
| 2551 |
/* skip b frames if we dont have reference frames */
|
| 2552 |
if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)) |
| 2553 |
return buf_size; //FIXME simulating all buffer consumed |
| 2554 |
/* skip b frames if we are in a hurry */
|
| 2555 |
if(avctx->hurry_up && s->pict_type==B_TYPE)
|
| 2556 |
return buf_size; //FIXME simulating all buffer consumed |
| 2557 |
/* skip everything if we are in a hurry>=5 */
|
| 2558 |
if(avctx->hurry_up>=5) |
| 2559 |
return buf_size; //FIXME simulating all buffer consumed |
| 2560 |
|
| 2561 |
if(s->next_p_frame_damaged){
|
| 2562 |
if(s->pict_type==B_TYPE)
|
| 2563 |
return buf_size; //FIXME simulating all buffer consumed |
| 2564 |
else
|
| 2565 |
s->next_p_frame_damaged=0;
|
| 2566 |
} |
| 2567 |
|
| 2568 |
if(MPV_frame_start(s, avctx) < 0) |
| 2569 |
return -1; |
| 2570 |
|
| 2571 |
ff_er_frame_start(s); |
| 2572 |
|
| 2573 |
//wmv9 may or may not have skip bits
|
| 2574 |
#if HAS_ADVANCED_PROFILE
|
| 2575 |
if (v->profile == PROFILE_ADVANCED)
|
| 2576 |
ret= advanced_decode_picture_secondary_header(v); |
| 2577 |
else
|
| 2578 |
#endif
|
| 2579 |
ret = standard_decode_picture_secondary_header(v); |
| 2580 |
if (ret<0) return FRAME_SKIPPED; //FIXME Non fatal for now |
| 2581 |
|
| 2582 |
//We consider the image coded in only one slice
|
| 2583 |
#if HAS_ADVANCED_PROFILE
|
| 2584 |
if (v->profile == PROFILE_ADVANCED)
|
| 2585 |
{
|
| 2586 |
switch(s->pict_type)
|
| 2587 |
{
|
| 2588 |
case I_TYPE: ret = advanced_decode_i_mbs(v); break; |
| 2589 |
case P_TYPE: ret = decode_p_mbs(v); break; |
| 2590 |
case B_TYPE:
|
| 2591 |
case BI_TYPE: ret = decode_b_mbs(v); break; |
| 2592 |
default: ret = FRAME_SKIPPED;
|
| 2593 |
} |
| 2594 |
if (ret == FRAME_SKIPPED) return buf_size; //We ignore for now failures |
| 2595 |
} |
| 2596 |
else
|
| 2597 |
#endif
|
| 2598 |
{
|
| 2599 |
ret = standard_decode_mbs(v); |
| 2600 |
if (ret == FRAME_SKIPPED) return buf_size; |
| 2601 |
} |
| 2602 |
|
| 2603 |
ff_er_frame_end(s); |
| 2604 |
|
| 2605 |
MPV_frame_end(s); |
| 2606 |
|
| 2607 |
assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type); |
| 2608 |
assert(s->current_picture.pict_type == s->pict_type); |
| 2609 |
if(s->pict_type==B_TYPE || s->low_delay){
|
| 2610 |
*pict= *(AVFrame*)&s->current_picture; |
| 2611 |
ff_print_debug_info(s, pict); |
| 2612 |
} else {
|
| 2613 |
*pict= *(AVFrame*)&s->last_picture; |
| 2614 |
if(pict)
|
| 2615 |
ff_print_debug_info(s, pict); |
| 2616 |
} |
| 2617 |
|
| 2618 |
/* Return the Picture timestamp as the frame number */
|
| 2619 |
/* we substract 1 because it is added on utils.c */
|
| 2620 |
avctx->frame_number = s->picture_number - 1;
|
| 2621 |
|
| 2622 |
/* dont output the last pic after seeking */
|
| 2623 |
if(s->last_picture_ptr || s->low_delay)
|
| 2624 |
*data_size = sizeof(AVFrame);
|
| 2625 |
|
| 2626 |
av_log(avctx, AV_LOG_DEBUG, "Consumed %i/%i bits\n",
|
| 2627 |
get_bits_count(&s->gb), buf_size*8);
|
| 2628 |
|
| 2629 |
/* Fake consumption of all data */
|
| 2630 |
*data_size = len; |
| 2631 |
return buf_size; //Number of bytes consumed |
| 2632 |
} |
| 2633 |
|
| 2634 |
/** Close a VC9/WMV3 decoder
|
| 2635 |
* @warning Initial try at using MpegEncContext stuff
|
| 2636 |
*/
|
| 2637 |
static int vc9_decode_end(AVCodecContext *avctx) |
| 2638 |
{
|
| 2639 |
VC9Context *v = avctx->priv_data; |
| 2640 |
|
| 2641 |
#if HAS_ADVANCED_PROFILE
|
| 2642 |
av_freep(&v->hrd_rate); |
| 2643 |
av_freep(&v->hrd_buffer); |
| 2644 |
#endif
|
| 2645 |
MPV_common_end(&v->s); |
| 2646 |
free_bitplane(&v->mv_type_mb_plane); |
| 2647 |
free_bitplane(&v->skip_mb_plane); |
| 2648 |
free_bitplane(&v->direct_mb_plane); |
| 2649 |
return 0; |
| 2650 |
} |
| 2651 |
|
| 2652 |
AVCodec vc9_decoder = {
|
| 2653 |
"vc9",
|
| 2654 |
CODEC_TYPE_VIDEO, |
| 2655 |
CODEC_ID_VC9, |
| 2656 |
sizeof(VC9Context),
|
| 2657 |
vc9_decode_init, |
| 2658 |
NULL,
|
| 2659 |
vc9_decode_end, |
| 2660 |
vc9_decode_frame, |
| 2661 |
CODEC_CAP_DELAY, |
| 2662 |
NULL
|
| 2663 |
}; |
| 2664 |
|
| 2665 |
AVCodec wmv3_decoder = {
|
| 2666 |
"wmv3",
|
| 2667 |
CODEC_TYPE_VIDEO, |
| 2668 |
CODEC_ID_WMV3, |
| 2669 |
sizeof(VC9Context),
|
| 2670 |
vc9_decode_init, |
| 2671 |
NULL,
|
| 2672 |
vc9_decode_end, |
| 2673 |
vc9_decode_frame, |
| 2674 |
CODEC_CAP_DELAY, |
| 2675 |
NULL
|
| 2676 |
}; |