ffmpeg / libavcodec / vc1.c @ c436ff41
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/*
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* VC-1 and WMV3 decoder
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* Copyright (c) 2006 Konstantin Shishkov
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* Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, 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 vc1.c
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* VC-1 and WMV3 decoder
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*
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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 "vc1data.h" |
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#include "vc1acdata.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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extern const uint16_t ff_msmp4_mb_i_table[64][2]; |
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#define DC_VLC_BITS 9 |
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#define AC_VLC_BITS 9 |
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static const uint16_t table_mb_intra[64][2]; |
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/** Available Profiles */
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//@{
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enum Profile {
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PROFILE_SIMPLE, |
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PROFILE_MAIN, |
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PROFILE_COMPLEX, ///< TODO: WMV9 specific
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PROFILE_ADVANCED |
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}; |
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//@}
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/** Sequence quantizer mode */
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//@{
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enum QuantMode {
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QUANT_FRAME_IMPLICIT, ///< Implicitly specified at frame level
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QUANT_FRAME_EXPLICIT, ///< Explicitly specified at frame level
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QUANT_NON_UNIFORM, ///< Non-uniform quant used for all frames
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QUANT_UNIFORM ///< Uniform quant used for all frames
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}; |
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//@}
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/** Where quant can be changed */
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//@{
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enum DQProfile {
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DQPROFILE_FOUR_EDGES, |
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DQPROFILE_DOUBLE_EDGES, |
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DQPROFILE_SINGLE_EDGE, |
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DQPROFILE_ALL_MBS |
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}; |
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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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enum DQSingleEdge {
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DQSINGLE_BEDGE_LEFT, |
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DQSINGLE_BEDGE_TOP, |
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DQSINGLE_BEDGE_RIGHT, |
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DQSINGLE_BEDGE_BOTTOM |
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}; |
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//@}
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/** Which pair of edges is quantized with ALTPQUANT */
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//@{
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enum DQDoubleEdge {
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DQDOUBLE_BEDGE_TOPLEFT, |
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DQDOUBLE_BEDGE_TOPRIGHT, |
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DQDOUBLE_BEDGE_BOTTOMRIGHT, |
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DQDOUBLE_BEDGE_BOTTOMLEFT |
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}; |
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//@}
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/** MV modes for P frames */
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//@{
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enum MVModes {
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MV_PMODE_1MV_HPEL_BILIN, |
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MV_PMODE_1MV, |
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MV_PMODE_1MV_HPEL, |
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MV_PMODE_MIXED_MV, |
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MV_PMODE_INTENSITY_COMP |
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}; |
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//@}
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/** @name MV types for B frames */
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//@{
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enum BMVTypes {
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BMV_TYPE_BACKWARD, |
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BMV_TYPE_FORWARD, |
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BMV_TYPE_INTERPOLATED = 3 //XXX: ?? |
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}; |
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//@}
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/** @name Block types for P/B frames */
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//@{
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enum TransformTypes {
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TT_8X8, |
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TT_8X4_BOTTOM, |
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TT_8X4_TOP, |
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TT_8X4, //Both halves
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TT_4X8_RIGHT, |
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TT_4X8_LEFT, |
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TT_4X8, //Both halves
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TT_4X4 |
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}; |
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//@}
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/** Table for conversion between TTBLK and TTMB */
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static const int ttblk_to_tt[3][8] = { |
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{ TT_8X4, TT_4X8, TT_8X8, TT_4X4, TT_8X4_TOP, TT_8X4_BOTTOM, TT_4X8_RIGHT, TT_4X8_LEFT }, |
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{ TT_8X8, TT_4X8_RIGHT, TT_4X8_LEFT, TT_4X4, TT_8X4, TT_4X8, TT_8X4_BOTTOM, TT_8X4_TOP }, |
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{ TT_8X8, TT_4X8, TT_4X4, TT_8X4_BOTTOM, TT_4X8_RIGHT, TT_4X8_LEFT, TT_8X4, TT_8X4_TOP } |
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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_INTENSITY_COMP, MV_PMODE_MIXED_MV }, |
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{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_INTENSITY_COMP, MV_PMODE_1MV_HPEL_BILIN } |
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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-1 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 VC1_BFRACTION_VLC_BITS 7 |
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static VLC vc1_bfraction_vlc;
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#define VC1_IMODE_VLC_BITS 4 |
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static VLC vc1_imode_vlc;
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#define VC1_NORM2_VLC_BITS 3 |
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static VLC vc1_norm2_vlc;
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#define VC1_NORM6_VLC_BITS 9 |
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static VLC vc1_norm6_vlc;
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/* Could be optimized, one table only needs 8 bits */
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#define VC1_TTMB_VLC_BITS 9 //12 |
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static VLC vc1_ttmb_vlc[3]; |
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#define VC1_MV_DIFF_VLC_BITS 9 //15 |
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static VLC vc1_mv_diff_vlc[4]; |
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#define VC1_CBPCY_P_VLC_BITS 9 //14 |
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static VLC vc1_cbpcy_p_vlc[4]; |
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#define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6 |
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static VLC vc1_4mv_block_pattern_vlc[4]; |
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#define VC1_TTBLK_VLC_BITS 5 |
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static VLC vc1_ttblk_vlc[3]; |
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#define VC1_SUBBLKPAT_VLC_BITS 6 |
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static VLC vc1_subblkpat_vlc[3]; |
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static VLC vc1_ac_coeff_table[8]; |
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//@}
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enum CodingSet {
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CS_HIGH_MOT_INTRA = 0,
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CS_HIGH_MOT_INTER, |
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CS_LOW_MOT_INTRA, |
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CS_LOW_MOT_INTER, |
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CS_MID_RATE_INTRA, |
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CS_MID_RATE_INTER, |
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CS_HIGH_RATE_INTRA, |
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CS_HIGH_RATE_INTER |
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}; |
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/** The VC1 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 VC1Context{ |
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MpegEncContext s; |
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int bits;
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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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/** 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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/** 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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int range_x, range_y; ///< 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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int codingset; ///< index of current table set from 11.8 to use for luma block decoding |
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int codingset2; ///< index of current table set from 11.8 to use for chroma block decoding |
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int pqindex; ///< raw pqindex used in coding set selection |
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int a_avail, c_avail;
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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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uint8_t* mv_type_mb_plane; ///< bitplane for mv_type == (4MV)
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uint8_t* skip_mb_plane; ///< bitplane for skipped MBs
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// BitPlane direct_mb_plane; ///< bitplane for "direct" MBs
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int mv_type_is_raw; ///< mv type mb plane is not coded |
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int skip_is_raw; ///< skip mb plane is not coded |
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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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/** 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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} VC1Context; |
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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;
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for(i = 0; i < len && get_bits1(gb) != stop; i++); |
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return i;
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/* int i = 0, tmp = !stop;
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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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static inline int decode210(GetBitContext *gb){ |
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int n;
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n = get_bits1(gb); |
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if (n == 1) |
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return 0; |
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else
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return 2 - get_bits1(gb); |
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} |
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/**
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* Init VC-1 specific tables and VC1Context members
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* @param v The VC1Context to initialize
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* @return Status
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*/
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static int vc1_init_common(VC1Context *v) |
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{ |
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static int done = 0; |
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int i = 0; |
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v->hrd_rate = v->hrd_buffer = NULL;
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/* VLC tables */
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if(!done)
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{ |
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done = 1;
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init_vlc(&vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
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vc1_bfraction_bits, 1, 1, |
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vc1_bfraction_codes, 1, 1, 1); |
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init_vlc(&vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
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vc1_norm2_bits, 1, 1, |
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vc1_norm2_codes, 1, 1, 1); |
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init_vlc(&vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
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vc1_norm6_bits, 1, 1, |
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vc1_norm6_codes, 2, 2, 1); |
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init_vlc(&vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
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vc1_imode_bits, 1, 1, |
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vc1_imode_codes, 1, 1, 1); |
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for (i=0; i<3; i++) |
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{ |
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init_vlc(&vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
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vc1_ttmb_bits[i], 1, 1, |
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vc1_ttmb_codes[i], 2, 2, 1); |
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init_vlc(&vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
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vc1_ttblk_bits[i], 1, 1, |
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vc1_ttblk_codes[i], 1, 1, 1); |
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init_vlc(&vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
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vc1_subblkpat_bits[i], 1, 1, |
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vc1_subblkpat_codes[i], 1, 1, 1); |
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} |
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for(i=0; i<4; i++) |
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{ |
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init_vlc(&vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
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vc1_4mv_block_pattern_bits[i], 1, 1, |
451 |
vc1_4mv_block_pattern_codes[i], 1, 1, 1); |
452 |
init_vlc(&vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
|
453 |
vc1_cbpcy_p_bits[i], 1, 1, |
454 |
vc1_cbpcy_p_codes[i], 2, 2, 1); |
455 |
init_vlc(&vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
|
456 |
vc1_mv_diff_bits[i], 1, 1, |
457 |
vc1_mv_diff_codes[i], 2, 2, 1); |
458 |
} |
459 |
for(i=0; i<8; i++) |
460 |
init_vlc(&vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i], |
461 |
&vc1_ac_tables[i][0][1], 8, 4, |
462 |
&vc1_ac_tables[i][0][0], 8, 4, 1); |
463 |
init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
|
464 |
&ff_msmp4_mb_i_table[0][1], 4, 2, |
465 |
&ff_msmp4_mb_i_table[0][0], 4, 2, 1); |
466 |
} |
467 |
|
468 |
/* Other defaults */
|
469 |
v->pq = -1;
|
470 |
v->mvrange = 0; /* 7.1.1.18, p80 */ |
471 |
|
472 |
return 0; |
473 |
} |
474 |
|
475 |
/***********************************************************************/
|
476 |
/**
|
477 |
* @defgroup bitplane VC9 Bitplane decoding
|
478 |
* @see 8.7, p56
|
479 |
* @{
|
480 |
*/
|
481 |
|
482 |
/** @addtogroup bitplane
|
483 |
* Imode types
|
484 |
* @{
|
485 |
*/
|
486 |
enum Imode {
|
487 |
IMODE_RAW, |
488 |
IMODE_NORM2, |
489 |
IMODE_DIFF2, |
490 |
IMODE_NORM6, |
491 |
IMODE_DIFF6, |
492 |
IMODE_ROWSKIP, |
493 |
IMODE_COLSKIP |
494 |
}; |
495 |
/** @} */ //imode defines |
496 |
|
497 |
/** Decode rows by checking if they are skipped
|
498 |
* @param plane Buffer to store decoded bits
|
499 |
* @param[in] width Width of this buffer
|
500 |
* @param[in] height Height of this buffer
|
501 |
* @param[in] stride of this buffer
|
502 |
*/
|
503 |
static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){ |
504 |
int x, y;
|
505 |
|
506 |
for (y=0; y<height; y++){ |
507 |
if (!get_bits(gb, 1)) //rowskip |
508 |
memset(plane, 0, width);
|
509 |
else
|
510 |
for (x=0; x<width; x++) |
511 |
plane[x] = get_bits(gb, 1);
|
512 |
plane += stride; |
513 |
} |
514 |
} |
515 |
|
516 |
/** Decode columns by checking if they are skipped
|
517 |
* @param plane Buffer to store decoded bits
|
518 |
* @param[in] width Width of this buffer
|
519 |
* @param[in] height Height of this buffer
|
520 |
* @param[in] stride of this buffer
|
521 |
* @fixme FIXME: Optimize
|
522 |
*/
|
523 |
static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){ |
524 |
int x, y;
|
525 |
|
526 |
for (x=0; x<width; x++){ |
527 |
if (!get_bits(gb, 1)) //colskip |
528 |
for (y=0; y<height; y++) |
529 |
plane[y*stride] = 0;
|
530 |
else
|
531 |
for (y=0; y<height; y++) |
532 |
plane[y*stride] = get_bits(gb, 1);
|
533 |
plane ++; |
534 |
} |
535 |
} |
536 |
|
537 |
/** Decode a bitplane's bits
|
538 |
* @param bp Bitplane where to store the decode bits
|
539 |
* @param v VC-1 context for bit reading and logging
|
540 |
* @return Status
|
541 |
* @fixme FIXME: Optimize
|
542 |
* @todo TODO: Decide if a struct is needed
|
543 |
*/
|
544 |
static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v) |
545 |
{ |
546 |
GetBitContext *gb = &v->s.gb; |
547 |
|
548 |
int imode, x, y, code, offset;
|
549 |
uint8_t invert, *planep = data; |
550 |
int width, height, stride;
|
551 |
|
552 |
width = v->s.mb_width; |
553 |
height = v->s.mb_height; |
554 |
stride = v->s.mb_stride; |
555 |
invert = get_bits(gb, 1);
|
556 |
imode = get_vlc2(gb, vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
|
557 |
|
558 |
*raw_flag = 0;
|
559 |
switch (imode)
|
560 |
{ |
561 |
case IMODE_RAW:
|
562 |
//Data is actually read in the MB layer (same for all tests == "raw")
|
563 |
*raw_flag = 1; //invert ignored |
564 |
return invert;
|
565 |
case IMODE_DIFF2:
|
566 |
case IMODE_NORM2:
|
567 |
if ((height * width) & 1) |
568 |
{ |
569 |
*planep++ = get_bits(gb, 1);
|
570 |
offset = 1;
|
571 |
} |
572 |
else offset = 0; |
573 |
// decode bitplane as one long line
|
574 |
for (y = offset; y < height * width; y += 2) { |
575 |
code = get_vlc2(gb, vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
|
576 |
*planep++ = code & 1;
|
577 |
offset++; |
578 |
if(offset == width) {
|
579 |
offset = 0;
|
580 |
planep += stride - width; |
581 |
} |
582 |
*planep++ = code >> 1;
|
583 |
offset++; |
584 |
if(offset == width) {
|
585 |
offset = 0;
|
586 |
planep += stride - width; |
587 |
} |
588 |
} |
589 |
break;
|
590 |
case IMODE_DIFF6:
|
591 |
case IMODE_NORM6:
|
592 |
if(!(height % 3) && (width % 3)) { // use 2x3 decoding |
593 |
for(y = 0; y < height; y+= 3) { |
594 |
for(x = width & 1; x < width; x += 2) { |
595 |
code = get_vlc2(gb, vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
|
596 |
if(code < 0){ |
597 |
av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
|
598 |
return -1; |
599 |
} |
600 |
planep[x + 0] = (code >> 0) & 1; |
601 |
planep[x + 1] = (code >> 1) & 1; |
602 |
planep[x + 0 + stride] = (code >> 2) & 1; |
603 |
planep[x + 1 + stride] = (code >> 3) & 1; |
604 |
planep[x + 0 + stride * 2] = (code >> 4) & 1; |
605 |
planep[x + 1 + stride * 2] = (code >> 5) & 1; |
606 |
} |
607 |
planep += stride * 3;
|
608 |
} |
609 |
if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb); |
610 |
} else { // 3x2 |
611 |
for(y = height & 1; y < height; y += 2) { |
612 |
for(x = width % 3; x < width; x += 3) { |
613 |
code = get_vlc2(gb, vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
|
614 |
if(code < 0){ |
615 |
av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
|
616 |
return -1; |
617 |
} |
618 |
planep[x + 0] = (code >> 0) & 1; |
619 |
planep[x + 1] = (code >> 1) & 1; |
620 |
planep[x + 2] = (code >> 2) & 1; |
621 |
planep[x + 0 + stride] = (code >> 3) & 1; |
622 |
planep[x + 1 + stride] = (code >> 4) & 1; |
623 |
planep[x + 2 + stride] = (code >> 5) & 1; |
624 |
} |
625 |
planep += stride * 2;
|
626 |
} |
627 |
x = width % 3;
|
628 |
if(x) decode_colskip(data , x, height , stride, &v->s.gb);
|
629 |
if(height & 1) decode_rowskip(data+x, width - x, 1, stride, &v->s.gb); |
630 |
} |
631 |
break;
|
632 |
case IMODE_ROWSKIP:
|
633 |
decode_rowskip(data, width, height, stride, &v->s.gb); |
634 |
break;
|
635 |
case IMODE_COLSKIP:
|
636 |
decode_colskip(data, width, height, stride, &v->s.gb); |
637 |
break;
|
638 |
default: break; |
639 |
} |
640 |
|
641 |
/* Applying diff operator */
|
642 |
if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
|
643 |
{ |
644 |
planep = data; |
645 |
planep[0] ^= invert;
|
646 |
for (x=1; x<width; x++) |
647 |
planep[x] ^= planep[x-1];
|
648 |
for (y=1; y<height; y++) |
649 |
{ |
650 |
planep += stride; |
651 |
planep[0] ^= planep[-stride];
|
652 |
for (x=1; x<width; x++) |
653 |
{ |
654 |
if (planep[x-1] != planep[x-stride]) planep[x] ^= invert; |
655 |
else planep[x] ^= planep[x-1]; |
656 |
} |
657 |
} |
658 |
} |
659 |
else if (invert) |
660 |
{ |
661 |
planep = data; |
662 |
for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride |
663 |
} |
664 |
return (imode<<1) + invert; |
665 |
} |
666 |
|
667 |
/** @} */ //Bitplane group |
668 |
|
669 |
/***********************************************************************/
|
670 |
/** VOP Dquant decoding
|
671 |
* @param v VC-1 Context
|
672 |
*/
|
673 |
static int vop_dquant_decoding(VC1Context *v) |
674 |
{ |
675 |
GetBitContext *gb = &v->s.gb; |
676 |
int pqdiff;
|
677 |
|
678 |
//variable size
|
679 |
if (v->dquant == 2) |
680 |
{ |
681 |
pqdiff = get_bits(gb, 3);
|
682 |
if (pqdiff == 7) v->altpq = get_bits(gb, 5); |
683 |
else v->altpq = v->pq + pqdiff + 1; |
684 |
} |
685 |
else
|
686 |
{ |
687 |
v->dquantfrm = get_bits(gb, 1);
|
688 |
if ( v->dquantfrm )
|
689 |
{ |
690 |
v->dqprofile = get_bits(gb, 2);
|
691 |
switch (v->dqprofile)
|
692 |
{ |
693 |
case DQPROFILE_SINGLE_EDGE:
|
694 |
case DQPROFILE_DOUBLE_EDGES:
|
695 |
v->dqsbedge = get_bits(gb, 2);
|
696 |
break;
|
697 |
case DQPROFILE_ALL_MBS:
|
698 |
v->dqbilevel = get_bits(gb, 1);
|
699 |
default: break; //Forbidden ? |
700 |
} |
701 |
if (!v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
|
702 |
{ |
703 |
pqdiff = get_bits(gb, 3);
|
704 |
if (pqdiff == 7) v->altpq = get_bits(gb, 5); |
705 |
else v->altpq = v->pq + pqdiff + 1; |
706 |
} |
707 |
} |
708 |
} |
709 |
return 0; |
710 |
} |
711 |
|
712 |
|
713 |
/** Do inverse transform
|
714 |
*/
|
715 |
static void vc1_inv_trans(DCTELEM block[64], int M, int N) |
716 |
{ |
717 |
int i;
|
718 |
register int t1,t2,t3,t4,t5,t6,t7,t8; |
719 |
DCTELEM *src, *dst; |
720 |
|
721 |
src = block; |
722 |
dst = block; |
723 |
if(M==4){ |
724 |
for(i = 0; i < N; i++){ |
725 |
t1 = 17 * (src[0] + src[2]); |
726 |
t2 = 17 * (src[0] - src[2]); |
727 |
t3 = 22 * src[1]; |
728 |
t4 = 22 * src[3]; |
729 |
t5 = 10 * src[1]; |
730 |
t6 = 10 * src[3]; |
731 |
|
732 |
dst[0] = (t1 + t3 + t6 + 4) >> 3; |
733 |
dst[1] = (t2 - t4 + t5 + 4) >> 3; |
734 |
dst[2] = (t2 + t4 - t5 + 4) >> 3; |
735 |
dst[3] = (t1 - t3 - t6 + 4) >> 3; |
736 |
|
737 |
src += 8;
|
738 |
dst += 8;
|
739 |
} |
740 |
}else{
|
741 |
for(i = 0; i < N; i++){ |
742 |
t1 = 12 * (src[0] + src[4]); |
743 |
t2 = 12 * (src[0] - src[4]); |
744 |
t3 = 16 * src[2] + 6 * src[6]; |
745 |
t4 = 6 * src[2] - 16 * src[6]; |
746 |
|
747 |
t5 = t1 + t3; |
748 |
t6 = t2 + t4; |
749 |
t7 = t2 - t4; |
750 |
t8 = t1 - t3; |
751 |
|
752 |
t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7]; |
753 |
t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7]; |
754 |
t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7]; |
755 |
t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7]; |
756 |
|
757 |
dst[0] = (t5 + t1 + 4) >> 3; |
758 |
dst[1] = (t6 + t2 + 4) >> 3; |
759 |
dst[2] = (t7 + t3 + 4) >> 3; |
760 |
dst[3] = (t8 + t4 + 4) >> 3; |
761 |
dst[4] = (t8 - t4 + 4) >> 3; |
762 |
dst[5] = (t7 - t3 + 4) >> 3; |
763 |
dst[6] = (t6 - t2 + 4) >> 3; |
764 |
dst[7] = (t5 - t1 + 4) >> 3; |
765 |
|
766 |
src += 8;
|
767 |
dst += 8;
|
768 |
} |
769 |
} |
770 |
|
771 |
src = block; |
772 |
dst = block; |
773 |
if(N==4){ |
774 |
for(i = 0; i < M; i++){ |
775 |
t1 = 17 * (src[ 0] + src[16]); |
776 |
t2 = 17 * (src[ 0] - src[16]); |
777 |
t3 = 22 * src[ 8]; |
778 |
t4 = 22 * src[24]; |
779 |
t5 = 10 * src[ 8]; |
780 |
t6 = 10 * src[24]; |
781 |
|
782 |
dst[ 0] = (t1 + t3 + t6 + 64) >> 7; |
783 |
dst[ 8] = (t2 - t4 + t5 + 64) >> 7; |
784 |
dst[16] = (t2 + t4 - t5 + 64) >> 7; |
785 |
dst[24] = (t1 - t3 - t6 + 64) >> 7; |
786 |
|
787 |
src ++; |
788 |
dst ++; |
789 |
} |
790 |
}else{
|
791 |
for(i = 0; i < M; i++){ |
792 |
t1 = 12 * (src[ 0] + src[32]); |
793 |
t2 = 12 * (src[ 0] - src[32]); |
794 |
t3 = 16 * src[16] + 6 * src[48]; |
795 |
t4 = 6 * src[16] - 16 * src[48]; |
796 |
|
797 |
t5 = t1 + t3; |
798 |
t6 = t2 + t4; |
799 |
t7 = t2 - t4; |
800 |
t8 = t1 - t3; |
801 |
|
802 |
t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56]; |
803 |
t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56]; |
804 |
t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56]; |
805 |
t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56]; |
806 |
|
807 |
dst[ 0] = (t5 + t1 + 64) >> 7; |
808 |
dst[ 8] = (t6 + t2 + 64) >> 7; |
809 |
dst[16] = (t7 + t3 + 64) >> 7; |
810 |
dst[24] = (t8 + t4 + 64) >> 7; |
811 |
dst[32] = (t8 - t4 + 64 + 1) >> 7; |
812 |
dst[40] = (t7 - t3 + 64 + 1) >> 7; |
813 |
dst[48] = (t6 - t2 + 64 + 1) >> 7; |
814 |
dst[56] = (t5 - t1 + 64 + 1) >> 7; |
815 |
|
816 |
src++; |
817 |
dst++; |
818 |
} |
819 |
} |
820 |
} |
821 |
|
822 |
/** Apply overlap transform
|
823 |
* @todo optimize
|
824 |
* @todo move to DSPContext
|
825 |
*/
|
826 |
static void vc1_overlap_block(MpegEncContext *s, DCTELEM block[64], int n, int do_hor, int do_vert) |
827 |
{ |
828 |
int i;
|
829 |
|
830 |
if(do_hor) { //TODO |
831 |
} |
832 |
if(do_vert) { //TODO |
833 |
} |
834 |
|
835 |
for(i = 0; i < 64; i++) |
836 |
block[i] += 128;
|
837 |
} |
838 |
|
839 |
|
840 |
static void vc1_v_overlap(uint8_t* src, int stride) |
841 |
{ |
842 |
int i;
|
843 |
int a, b, c, d;
|
844 |
for(i = 0; i < 8; i++) { |
845 |
a = src[-2*stride];
|
846 |
b = src[-stride]; |
847 |
c = src[0];
|
848 |
d = src[stride]; |
849 |
|
850 |
src[-2*stride] = (7*a + d) >> 3; |
851 |
src[-stride] = (-a + 7*b + c + d) >> 3; |
852 |
src[0] = (a + b + 7*c - d) >> 3; |
853 |
src[stride] = (a + 7*d) >> 3; |
854 |
src++; |
855 |
} |
856 |
} |
857 |
|
858 |
static void vc1_h_overlap(uint8_t* src, int stride) |
859 |
{ |
860 |
int i;
|
861 |
int a, b, c, d;
|
862 |
for(i = 0; i < 8; i++) { |
863 |
a = src[-2];
|
864 |
b = src[-1];
|
865 |
c = src[0];
|
866 |
d = src[1];
|
867 |
|
868 |
src[-2] = (7*a + d) >> 3; |
869 |
src[-1] = (-a + 7*b + c + d) >> 3; |
870 |
src[0] = (a + b + 7*c - d) >> 3; |
871 |
src[1] = (a + 7*d) >> 3; |
872 |
src += stride; |
873 |
} |
874 |
} |
875 |
|
876 |
/** Put block onto picture
|
877 |
* @todo move to DSPContext
|
878 |
*/
|
879 |
static void vc1_put_block(VC1Context *v, DCTELEM block[6][64]) |
880 |
{ |
881 |
uint8_t *Y; |
882 |
int ys, us, vs;
|
883 |
DSPContext *dsp = &v->s.dsp; |
884 |
|
885 |
ys = v->s.current_picture.linesize[0];
|
886 |
us = v->s.current_picture.linesize[1];
|
887 |
vs = v->s.current_picture.linesize[2];
|
888 |
Y = v->s.dest[0];
|
889 |
|
890 |
dsp->put_pixels_clamped(block[0], Y, ys);
|
891 |
dsp->put_pixels_clamped(block[1], Y + 8, ys); |
892 |
Y += ys * 8;
|
893 |
dsp->put_pixels_clamped(block[2], Y, ys);
|
894 |
dsp->put_pixels_clamped(block[3], Y + 8, ys); |
895 |
|
896 |
dsp->put_pixels_clamped(block[4], v->s.dest[1], us); |
897 |
dsp->put_pixels_clamped(block[5], v->s.dest[2], vs); |
898 |
} |
899 |
|
900 |
/* clip motion vector as specified in 8.3.6.5 */
|
901 |
#define CLIP_RANGE(mv, src, lim, bs) \
|
902 |
if(mv < -bs) mv = -bs - src * bs; \
|
903 |
if(mv > lim) mv = lim - src * bs;
|
904 |
|
905 |
/** Do motion compensation over 1 macroblock
|
906 |
* Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
|
907 |
*/
|
908 |
static void vc1_mc_1mv(VC1Context *v) |
909 |
{ |
910 |
MpegEncContext *s = &v->s; |
911 |
DSPContext *dsp = &v->s.dsp; |
912 |
uint8_t *srcY, *srcU, *srcV; |
913 |
int dxy, uvdxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
|
914 |
|
915 |
if(!v->s.last_picture.data[0])return; |
916 |
|
917 |
mx = s->mv[0][0][0]; |
918 |
my = s->mv[0][0][1]; |
919 |
uvmx = (mx + ((mx & 3) == 3)) >> 1; |
920 |
uvmy = (my + ((my & 3) == 3)) >> 1; |
921 |
srcY = s->last_picture.data[0];
|
922 |
srcU = s->last_picture.data[1];
|
923 |
srcV = s->last_picture.data[2];
|
924 |
|
925 |
if(v->fastuvmc) { // XXX: 8.3.5.4.5 specifies something different |
926 |
uvmx = (uvmx + 1) >> 1; |
927 |
uvmy = (uvmy + 1) >> 1; |
928 |
} |
929 |
|
930 |
src_x = s->mb_x * 16 + (mx >> 2); |
931 |
src_y = s->mb_y * 16 + (my >> 2); |
932 |
uvsrc_x = s->mb_x * 8 + (uvmx >> 2); |
933 |
uvsrc_y = s->mb_y * 8 + (uvmy >> 2); |
934 |
|
935 |
CLIP_RANGE( src_x, s->mb_x, s->mb_width * 16, 16); |
936 |
CLIP_RANGE( src_y, s->mb_y, s->mb_height * 16, 16); |
937 |
CLIP_RANGE(uvsrc_x, s->mb_x, s->mb_width * 8, 8); |
938 |
CLIP_RANGE(uvsrc_y, s->mb_y, s->mb_height * 8, 8); |
939 |
|
940 |
srcY += src_y * s->linesize + src_x; |
941 |
srcU += uvsrc_y * s->uvlinesize + uvsrc_x; |
942 |
srcV += uvsrc_y * s->uvlinesize + uvsrc_x; |
943 |
|
944 |
if((unsigned)src_x > s->h_edge_pos - (mx&3) - 16 |
945 |
|| (unsigned)src_y > s->v_edge_pos - (my&3) - 16){ |
946 |
uint8_t *uvbuf= s->edge_emu_buffer + 18 * s->linesize;
|
947 |
|
948 |
ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 16+1, 16+1, |
949 |
src_x, src_y, s->h_edge_pos, s->v_edge_pos); |
950 |
srcY = s->edge_emu_buffer; |
951 |
ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1, |
952 |
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); |
953 |
ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1, |
954 |
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); |
955 |
srcU = uvbuf; |
956 |
srcV = uvbuf + 16;
|
957 |
} |
958 |
|
959 |
if(!s->quarter_sample) { // hpel mc |
960 |
mx >>= 1;
|
961 |
my >>= 1;
|
962 |
uvmx >>= 1;
|
963 |
uvmy >>= 1;
|
964 |
dxy = ((my & 1) << 1) | (mx & 1); |
965 |
uvdxy = 0;
|
966 |
|
967 |
dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16); |
968 |
} else {
|
969 |
dxy = ((my & 3) << 2) | (mx & 3); |
970 |
uvdxy = ((uvmy & 1) << 1) | (uvmx & 1); |
971 |
|
972 |
dsp->put_no_rnd_qpel_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize); |
973 |
} |
974 |
dsp->put_mspel_pixels_tab[uvdxy](s->dest[1], srcU, s->uvlinesize);
|
975 |
dsp->put_mspel_pixels_tab[uvdxy](s->dest[2], srcV, s->uvlinesize);
|
976 |
} |
977 |
|
978 |
/**
|
979 |
* Decode Simple/Main Profiles sequence header
|
980 |
* @see Figure 7-8, p16-17
|
981 |
* @param avctx Codec context
|
982 |
* @param gb GetBit context initialized from Codec context extra_data
|
983 |
* @return Status
|
984 |
*/
|
985 |
static int decode_sequence_header(AVCodecContext *avctx, GetBitContext *gb) |
986 |
{ |
987 |
VC1Context *v = avctx->priv_data; |
988 |
|
989 |
av_log(avctx, AV_LOG_INFO, "Header: %0X\n", show_bits(gb, 32)); |
990 |
v->profile = get_bits(gb, 2);
|
991 |
if (v->profile == 2) |
992 |
{ |
993 |
av_log(avctx, AV_LOG_ERROR, "Profile value 2 is forbidden (and WMV3 Complex Profile is unsupported)\n");
|
994 |
return -1; |
995 |
} |
996 |
|
997 |
if (v->profile == PROFILE_ADVANCED)
|
998 |
{ |
999 |
v->level = get_bits(gb, 3);
|
1000 |
if(v->level >= 5) |
1001 |
{ |
1002 |
av_log(avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
|
1003 |
} |
1004 |
v->chromaformat = get_bits(gb, 2);
|
1005 |
if (v->chromaformat != 1) |
1006 |
{ |
1007 |
av_log(avctx, AV_LOG_ERROR, |
1008 |
"Only 4:2:0 chroma format supported\n");
|
1009 |
return -1; |
1010 |
} |
1011 |
} |
1012 |
else
|
1013 |
{ |
1014 |
v->res_sm = get_bits(gb, 2); //reserved |
1015 |
if (v->res_sm)
|
1016 |
{ |
1017 |
av_log(avctx, AV_LOG_ERROR, |
1018 |
"Reserved RES_SM=%i is forbidden\n", v->res_sm);
|
1019 |
return -1; |
1020 |
} |
1021 |
} |
1022 |
|
1023 |
// (fps-2)/4 (->30)
|
1024 |
v->frmrtq_postproc = get_bits(gb, 3); //common |
1025 |
// (bitrate-32kbps)/64kbps
|
1026 |
v->bitrtq_postproc = get_bits(gb, 5); //common |
1027 |
v->s.loop_filter = get_bits(gb, 1); //common |
1028 |
if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) |
1029 |
{ |
1030 |
av_log(avctx, AV_LOG_ERROR, |
1031 |
"LOOPFILTER shell not be enabled in simple profile\n");
|
1032 |
} |
1033 |
|
1034 |
if (v->profile < PROFILE_ADVANCED)
|
1035 |
{ |
1036 |
v->res_x8 = get_bits(gb, 1); //reserved |
1037 |
if (v->res_x8)
|
1038 |
{ |
1039 |
av_log(avctx, AV_LOG_ERROR, |
1040 |
"1 for reserved RES_X8 is forbidden\n");
|
1041 |
//return -1;
|
1042 |
} |
1043 |
v->multires = get_bits(gb, 1);
|
1044 |
v->res_fasttx = get_bits(gb, 1);
|
1045 |
if (!v->res_fasttx)
|
1046 |
{ |
1047 |
av_log(avctx, AV_LOG_ERROR, |
1048 |
"0 for reserved RES_FASTTX is forbidden\n");
|
1049 |
//return -1;
|
1050 |
} |
1051 |
} |
1052 |
|
1053 |
v->fastuvmc = get_bits(gb, 1); //common |
1054 |
if (!v->profile && !v->fastuvmc)
|
1055 |
{ |
1056 |
av_log(avctx, AV_LOG_ERROR, |
1057 |
"FASTUVMC unavailable in Simple Profile\n");
|
1058 |
return -1; |
1059 |
} |
1060 |
v->extended_mv = get_bits(gb, 1); //common |
1061 |
if (!v->profile && v->extended_mv)
|
1062 |
{ |
1063 |
av_log(avctx, AV_LOG_ERROR, |
1064 |
"Extended MVs unavailable in Simple Profile\n");
|
1065 |
return -1; |
1066 |
} |
1067 |
v->dquant = get_bits(gb, 2); //common |
1068 |
v->vstransform = get_bits(gb, 1); //common |
1069 |
|
1070 |
if (v->profile < PROFILE_ADVANCED)
|
1071 |
{ |
1072 |
v->res_transtab = get_bits(gb, 1);
|
1073 |
if (v->res_transtab)
|
1074 |
{ |
1075 |
av_log(avctx, AV_LOG_ERROR, |
1076 |
"1 for reserved RES_TRANSTAB is forbidden\n");
|
1077 |
return -1; |
1078 |
} |
1079 |
} |
1080 |
|
1081 |
v->overlap = get_bits(gb, 1); //common |
1082 |
|
1083 |
if (v->profile < PROFILE_ADVANCED)
|
1084 |
{ |
1085 |
v->s.resync_marker = get_bits(gb, 1);
|
1086 |
v->rangered = get_bits(gb, 1);
|
1087 |
if (v->rangered && v->profile == PROFILE_SIMPLE)
|
1088 |
{ |
1089 |
av_log(avctx, AV_LOG_INFO, |
1090 |
"RANGERED should be set to 0 in simple profile\n");
|
1091 |
} |
1092 |
} |
1093 |
|
1094 |
v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common |
1095 |
v->quantizer_mode = get_bits(gb, 2); //common |
1096 |
|
1097 |
if (v->profile < PROFILE_ADVANCED)
|
1098 |
{ |
1099 |
v->finterpflag = get_bits(gb, 1); //common |
1100 |
v->res_rtm_flag = get_bits(gb, 1); //reserved |
1101 |
if (!v->res_rtm_flag)
|
1102 |
{ |
1103 |
av_log(avctx, AV_LOG_ERROR, |
1104 |
"0 for reserved RES_RTM_FLAG is forbidden\n");
|
1105 |
//return -1;
|
1106 |
} |
1107 |
av_log(avctx, AV_LOG_DEBUG, |
1108 |
"Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
|
1109 |
"LoopFilter=%i, MultiRes=%i, FastUVMV=%i, Extended MV=%i\n"
|
1110 |
"Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
|
1111 |
"DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
|
1112 |
v->profile, v->frmrtq_postproc, v->bitrtq_postproc, |
1113 |
v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv, |
1114 |
v->rangered, v->vstransform, v->overlap, v->s.resync_marker, |
1115 |
v->dquant, v->quantizer_mode, avctx->max_b_frames |
1116 |
); |
1117 |
return 0; |
1118 |
} |
1119 |
return -1; |
1120 |
} |
1121 |
|
1122 |
|
1123 |
static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb) |
1124 |
{ |
1125 |
int pqindex, lowquant, status;
|
1126 |
|
1127 |
if(v->finterpflag) v->interpfrm = get_bits(gb, 1); |
1128 |
skip_bits(gb, 2); //framecnt unused |
1129 |
v->rangeredfrm = 0;
|
1130 |
if (v->rangered) v->rangeredfrm = get_bits(gb, 1); |
1131 |
v->s.pict_type = get_bits(gb, 1);
|
1132 |
if (v->s.avctx->max_b_frames) {
|
1133 |
if (!v->s.pict_type) {
|
1134 |
if (get_bits(gb, 1)) v->s.pict_type = I_TYPE; |
1135 |
else v->s.pict_type = B_TYPE;
|
1136 |
} else v->s.pict_type = P_TYPE;
|
1137 |
} else v->s.pict_type = v->s.pict_type ? P_TYPE : I_TYPE;
|
1138 |
|
1139 |
if(v->s.pict_type == I_TYPE)
|
1140 |
get_bits(gb, 7); // skip buffer fullness |
1141 |
|
1142 |
/* Quantizer stuff */
|
1143 |
pqindex = get_bits(gb, 5);
|
1144 |
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
1145 |
v->pq = pquant_table[0][pqindex];
|
1146 |
else
|
1147 |
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
|
1148 |
|
1149 |
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
1150 |
v->pquantizer = pqindex < 9;
|
1151 |
if (v->quantizer_mode == QUANT_UNIFORM || v->quantizer_mode == QUANT_NON_UNIFORM)
|
1152 |
v->pquantizer = v->quantizer_mode == QUANT_UNIFORM; |
1153 |
v->pqindex = pqindex; |
1154 |
if (pqindex < 9) v->halfpq = get_bits(gb, 1); |
1155 |
else v->halfpq = 0; |
1156 |
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
1157 |
v->pquantizer = get_bits(gb, 1);
|
1158 |
v->dquantfrm = 0;
|
1159 |
|
1160 |
//av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
|
1161 |
// (v->s.pict_type == P_TYPE) ? 'P' : ((v->s.pict_type == I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
|
1162 |
|
1163 |
//TODO: complete parsing for P/B/BI frames
|
1164 |
switch(v->s.pict_type) {
|
1165 |
case P_TYPE:
|
1166 |
if (v->pq < 5) v->tt_index = 0; |
1167 |
else if(v->pq < 13) v->tt_index = 1; |
1168 |
else v->tt_index = 2; |
1169 |
|
1170 |
if (v->extended_mv == 1) v->mvrange = get_prefix(gb, 0, 3); |
1171 |
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13 |
1172 |
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11 |
1173 |
v->range_x = 1 << (v->k_x - 1); |
1174 |
v->range_y = 1 << (v->k_y - 1); |
1175 |
if (v->profile == PROFILE_ADVANCED)
|
1176 |
{ |
1177 |
if (v->postprocflag) v->postproc = get_bits(gb, 1); |
1178 |
} |
1179 |
else
|
1180 |
if (v->multires) v->respic = get_bits(gb, 2); |
1181 |
lowquant = (v->pq > 12) ? 0 : 1; |
1182 |
v->mv_mode = mv_pmode_table[lowquant][get_prefix(gb, 1, 4)]; |
1183 |
if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
|
1184 |
{ |
1185 |
v->mv_mode2 = mv_pmode_table[lowquant][get_prefix(gb, 1, 3)]; |
1186 |
v->lumscale = get_bits(gb, 6);
|
1187 |
v->lumshift = get_bits(gb, 6);
|
1188 |
} |
1189 |
if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
|
1190 |
v->s.quarter_sample = 0;
|
1191 |
else
|
1192 |
v->s.quarter_sample = 1;
|
1193 |
|
1194 |
if(v->mv_mode != MV_PMODE_1MV && v->mv_mode != MV_PMODE_1MV_HPEL && v->mv_mode != MV_PMODE_1MV_HPEL_BILIN) {
|
1195 |
av_log(v->s.avctx, AV_LOG_ERROR, "Only 1MV P-frames are supported by now\n");
|
1196 |
return -1; |
1197 |
} |
1198 |
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
1199 |
v->mv_mode2 == MV_PMODE_MIXED_MV) |
1200 |
|| v->mv_mode == MV_PMODE_MIXED_MV) |
1201 |
{ |
1202 |
status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v); |
1203 |
if (status < 0) return -1; |
1204 |
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
1205 |
"Imode: %i, Invert: %i\n", status>>1, status&1); |
1206 |
} else {
|
1207 |
v->mv_type_is_raw = 0;
|
1208 |
memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
|
1209 |
} |
1210 |
status = bitplane_decoding(v->skip_mb_plane, &v->skip_is_raw, v); |
1211 |
if (status < 0) return -1; |
1212 |
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
1213 |
"Imode: %i, Invert: %i\n", status>>1, status&1); |
1214 |
|
1215 |
/* Hopefully this is correct for P frames */
|
1216 |
v->s.mv_table_index = get_bits(gb, 2); //but using vc1_ tables |
1217 |
v->cbpcy_vlc = &vc1_cbpcy_p_vlc[get_bits(gb, 2)];
|
1218 |
|
1219 |
if (v->dquant)
|
1220 |
{ |
1221 |
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
1222 |
vop_dquant_decoding(v); |
1223 |
} |
1224 |
|
1225 |
v->ttfrm = 0; //FIXME Is that so ? |
1226 |
if (v->vstransform)
|
1227 |
{ |
1228 |
v->ttmbf = get_bits(gb, 1);
|
1229 |
if (v->ttmbf)
|
1230 |
{ |
1231 |
v->ttfrm = get_bits(gb, 2);
|
1232 |
} |
1233 |
} |
1234 |
break;
|
1235 |
case B_TYPE:
|
1236 |
break;
|
1237 |
} |
1238 |
|
1239 |
/* AC Syntax */
|
1240 |
v->c_ac_table_index = decode012(gb); |
1241 |
if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
|
1242 |
{ |
1243 |
v->y_ac_table_index = decode012(gb); |
1244 |
} |
1245 |
/* DC Syntax */
|
1246 |
v->s.dc_table_index = get_bits(gb, 1);
|
1247 |
|
1248 |
return 0; |
1249 |
} |
1250 |
|
1251 |
/***********************************************************************/
|
1252 |
/**
|
1253 |
* @defgroup block VC-1 Block-level functions
|
1254 |
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
|
1255 |
* @todo TODO: Integrate to MpegEncContext facilities
|
1256 |
* @{
|
1257 |
*/
|
1258 |
|
1259 |
/**
|
1260 |
* @def GET_MQUANT
|
1261 |
* @brief Get macroblock-level quantizer scale
|
1262 |
* @warning XXX: qdiff to the frame quant, not previous quant ?
|
1263 |
* @fixme XXX: Don't know how to initialize mquant otherwise in last case
|
1264 |
*/
|
1265 |
#define GET_MQUANT() \
|
1266 |
if (v->dquantfrm) \
|
1267 |
{ \ |
1268 |
if (v->dqprofile == DQPROFILE_ALL_MBS) \
|
1269 |
{ \ |
1270 |
if (v->dqbilevel) \
|
1271 |
{ \ |
1272 |
mquant = (get_bits(gb, 1)) ? v->pq : v->altpq; \
|
1273 |
} \ |
1274 |
else \
|
1275 |
{ \ |
1276 |
mqdiff = get_bits(gb, 3); \
|
1277 |
if (mqdiff != 7) mquant = v->pq + mqdiff; \ |
1278 |
else mquant = get_bits(gb, 5); \ |
1279 |
} \ |
1280 |
} \ |
1281 |
else mquant = v->pq; \
|
1282 |
} |
1283 |
|
1284 |
/**
|
1285 |
* @def GET_MVDATA(_dmv_x, _dmv_y)
|
1286 |
* @brief Get MV differentials
|
1287 |
* @see MVDATA decoding from 8.3.5.2, p(1)20
|
1288 |
* @param _dmv_x Horizontal differential for decoded MV
|
1289 |
* @param _dmv_y Vertical differential for decoded MV
|
1290 |
* @todo TODO: Use MpegEncContext arrays to store them
|
1291 |
*/
|
1292 |
#define GET_MVDATA(_dmv_x, _dmv_y) \
|
1293 |
index = 1 + get_vlc2(gb, vc1_mv_diff_vlc[s->mv_table_index].table,\
|
1294 |
VC1_MV_DIFF_VLC_BITS, 2); \
|
1295 |
if (index > 36) \ |
1296 |
{ \ |
1297 |
mb_has_coeffs = 1; \
|
1298 |
index -= 37; \
|
1299 |
} \ |
1300 |
else mb_has_coeffs = 0; \ |
1301 |
s->mb_intra = 0; \
|
1302 |
if (!index) { _dmv_x = _dmv_y = 0; } \ |
1303 |
else if (index == 35) \ |
1304 |
{ \ |
1305 |
_dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
|
1306 |
_dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
|
1307 |
} \ |
1308 |
else if (index == 36) \ |
1309 |
{ \ |
1310 |
_dmv_x = 0; \
|
1311 |
_dmv_y = 0; \
|
1312 |
s->mb_intra = 1; \
|
1313 |
} \ |
1314 |
else \
|
1315 |
{ \ |
1316 |
index1 = index%6; \
|
1317 |
if (!s->quarter_sample && index1 == 5) val = 1; \ |
1318 |
else val = 0; \ |
1319 |
if(size_table[index1] - val > 0) \ |
1320 |
val = get_bits(gb, size_table[index1] - val); \ |
1321 |
else val = 0; \ |
1322 |
sign = 0 - (val&1); \ |
1323 |
_dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
|
1324 |
\ |
1325 |
index1 = index/6; \
|
1326 |
if (!s->quarter_sample && index1 == 5) val = 1; \ |
1327 |
else val = 0; \ |
1328 |
if(size_table[index1] - val > 0) \ |
1329 |
val = get_bits(gb, size_table[index1] - val); \ |
1330 |
else val = 0; \ |
1331 |
sign = 0 - (val&1); \ |
1332 |
_dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
|
1333 |
} |
1334 |
|
1335 |
/** Predict and set motion vector
|
1336 |
*/
|
1337 |
static inline void vc1_pred_mv(MpegEncContext *s, int dmv_x, int dmv_y, int mv1, int r_x, int r_y) |
1338 |
{ |
1339 |
int xy, wrap, off;
|
1340 |
int16_t *A, *B, *C; |
1341 |
int px, py;
|
1342 |
int sum;
|
1343 |
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
1344 |
|
1345 |
/* scale MV difference to be quad-pel */
|
1346 |
dmv_x <<= 1 - s->quarter_sample;
|
1347 |
dmv_y <<= 1 - s->quarter_sample;
|
1348 |
|
1349 |
wrap = s->b8_stride; |
1350 |
xy = s->block_index[0];
|
1351 |
|
1352 |
C = s->current_picture.motion_val[0][xy - (1 << mv1)]; |
1353 |
A = s->current_picture.motion_val[0][xy - (wrap << mv1)];
|
1354 |
off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1; |
1355 |
B = s->current_picture.motion_val[0][xy + ((off - wrap) << mv1)];
|
1356 |
|
1357 |
if(!s->first_slice_line) { // predictor A is not out of bounds |
1358 |
if(s->mb_width == 1) { |
1359 |
px = A[0];
|
1360 |
py = A[1];
|
1361 |
} else {
|
1362 |
px = mid_pred(A[0], B[0], C[0]); |
1363 |
py = mid_pred(A[1], B[1], C[1]); |
1364 |
} |
1365 |
} else if(s->mb_x) { // predictor C is not out of bounds |
1366 |
px = C[0];
|
1367 |
py = C[1];
|
1368 |
} else {
|
1369 |
px = py = 0;
|
1370 |
} |
1371 |
if(s->mb_intra) px = py = 0; |
1372 |
|
1373 |
/* Pullback MV as specified in 8.3.5.3.4 */
|
1374 |
{ |
1375 |
int qx, qy, X, Y;
|
1376 |
qx = s->mb_x << 6; //FIXME: add real block coords for 4MV mode |
1377 |
qy = s->mb_y << 6;
|
1378 |
X = (s->mb_width << 6) - 4; |
1379 |
Y = (s->mb_height << 6) - 4; |
1380 |
if(mv1) {
|
1381 |
if(qx + px < -60) px = -60 - qx; |
1382 |
if(qy + py < -60) py = -60 - qy; |
1383 |
} else {
|
1384 |
if(qx + px < -28) px = -28 - qx; |
1385 |
if(qy + py < -28) py = -28 - qy; |
1386 |
} |
1387 |
if(qx + px > X) px = X - qx;
|
1388 |
if(qy + py > Y) py = Y - qy;
|
1389 |
} |
1390 |
/* Calculate hybrid prediction as specified in 8.3.5.3.5 */
|
1391 |
if(!s->mb_intra && !s->first_slice_line && s->mb_x) {
|
1392 |
if(IS_INTRA(s->current_picture.mb_type[mb_pos - s->mb_stride]))
|
1393 |
sum = ABS(px) + ABS(py); |
1394 |
else
|
1395 |
sum = ABS(px - A[0]) + ABS(py - A[1]); |
1396 |
if(sum > 32) { |
1397 |
if(get_bits1(&s->gb)) {
|
1398 |
px = A[0];
|
1399 |
py = A[1];
|
1400 |
} else {
|
1401 |
px = C[0];
|
1402 |
py = C[1];
|
1403 |
} |
1404 |
} else {
|
1405 |
if(IS_INTRA(s->current_picture.mb_type[mb_pos - 1])) |
1406 |
sum = ABS(px) + ABS(py); |
1407 |
else
|
1408 |
sum = ABS(px - C[0]) + ABS(py - C[1]); |
1409 |
if(sum > 32) { |
1410 |
if(get_bits1(&s->gb)) {
|
1411 |
px = A[0];
|
1412 |
py = A[1];
|
1413 |
} else {
|
1414 |
px = C[0];
|
1415 |
py = C[1];
|
1416 |
} |
1417 |
} |
1418 |
} |
1419 |
} |
1420 |
/* store MV using signed modulus of MV range defined in 4.11 */
|
1421 |
s->mv[0][0][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x; |
1422 |
s->mv[0][0][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y; |
1423 |
} |
1424 |
|
1425 |
/** Get predicted DC value for I-frames only
|
1426 |
* prediction dir: left=0, top=1
|
1427 |
* @param s MpegEncContext
|
1428 |
* @param[in] n block index in the current MB
|
1429 |
* @param dc_val_ptr Pointer to DC predictor
|
1430 |
* @param dir_ptr Prediction direction for use in AC prediction
|
1431 |
*/
|
1432 |
static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n, |
1433 |
int16_t **dc_val_ptr, int *dir_ptr)
|
1434 |
{ |
1435 |
int a, b, c, wrap, pred, scale;
|
1436 |
int16_t *dc_val; |
1437 |
static const uint16_t dcpred[32] = { |
1438 |
-1, 1024, 512, 341, 256, 205, 171, 146, 128, |
1439 |
114, 102, 93, 85, 79, 73, 68, 64, |
1440 |
60, 57, 54, 51, 49, 47, 45, 43, |
1441 |
41, 39, 38, 37, 35, 34, 33 |
1442 |
}; |
1443 |
|
1444 |
/* find prediction - wmv3_dc_scale always used here in fact */
|
1445 |
if (n < 4) scale = s->y_dc_scale; |
1446 |
else scale = s->c_dc_scale;
|
1447 |
|
1448 |
wrap = s->block_wrap[n]; |
1449 |
dc_val= s->dc_val[0] + s->block_index[n];
|
1450 |
|
1451 |
/* B A
|
1452 |
* C X
|
1453 |
*/
|
1454 |
c = dc_val[ - 1];
|
1455 |
b = dc_val[ - 1 - wrap];
|
1456 |
a = dc_val[ - wrap]; |
1457 |
|
1458 |
if (pq < 9 || !overlap) |
1459 |
{ |
1460 |
/* Set outer values */
|
1461 |
if (!s->mb_y && (n!=2 && n!=3)) b=a=dcpred[scale]; |
1462 |
if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale]; |
1463 |
} |
1464 |
else
|
1465 |
{ |
1466 |
/* Set outer values */
|
1467 |
if (!s->mb_y && (n!=2 && n!=3)) b=a=0; |
1468 |
if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0; |
1469 |
} |
1470 |
|
1471 |
if (abs(a - b) <= abs(b - c)) {
|
1472 |
pred = c; |
1473 |
*dir_ptr = 1;//left |
1474 |
} else {
|
1475 |
pred = a; |
1476 |
*dir_ptr = 0;//top |
1477 |
} |
1478 |
|
1479 |
/* update predictor */
|
1480 |
*dc_val_ptr = &dc_val[0];
|
1481 |
return pred;
|
1482 |
} |
1483 |
|
1484 |
|
1485 |
/** Get predicted DC value
|
1486 |
* prediction dir: left=0, top=1
|
1487 |
* @param s MpegEncContext
|
1488 |
* @param[in] n block index in the current MB
|
1489 |
* @param dc_val_ptr Pointer to DC predictor
|
1490 |
* @param dir_ptr Prediction direction for use in AC prediction
|
1491 |
*/
|
1492 |
static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n, |
1493 |
int a_avail, int c_avail, |
1494 |
int16_t **dc_val_ptr, int *dir_ptr)
|
1495 |
{ |
1496 |
int a, b, c, wrap, pred, scale;
|
1497 |
int16_t *dc_val; |
1498 |
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
1499 |
int mb_pos2, q1, q2;
|
1500 |
|
1501 |
/* find prediction - wmv3_dc_scale always used here in fact */
|
1502 |
if (n < 4) scale = s->y_dc_scale; |
1503 |
else scale = s->c_dc_scale;
|
1504 |
|
1505 |
wrap = s->block_wrap[n]; |
1506 |
dc_val= s->dc_val[0] + s->block_index[n];
|
1507 |
|
1508 |
/* B A
|
1509 |
* C X
|
1510 |
*/
|
1511 |
c = dc_val[ - 1];
|
1512 |
b = dc_val[ - 1 - wrap];
|
1513 |
a = dc_val[ - wrap]; |
1514 |
|
1515 |
if(a_avail && c_avail) {
|
1516 |
if(abs(a - b) <= abs(b - c)) {
|
1517 |
pred = c; |
1518 |
*dir_ptr = 1;//left |
1519 |
} else {
|
1520 |
pred = a; |
1521 |
*dir_ptr = 0;//top |
1522 |
} |
1523 |
} else if(a_avail) { |
1524 |
pred = a; |
1525 |
*dir_ptr = 0;//top |
1526 |
} else if(c_avail) { |
1527 |
pred = c; |
1528 |
*dir_ptr = 1;//left |
1529 |
} else {
|
1530 |
pred = 0;
|
1531 |
*dir_ptr = 1;//left |
1532 |
} |
1533 |
|
1534 |
/* scale coeffs if needed */
|
1535 |
mb_pos2 = mb_pos - *dir_ptr - (1 - *dir_ptr) * s->mb_stride;
|
1536 |
q1 = s->current_picture.qscale_table[mb_pos]; |
1537 |
q2 = s->current_picture.qscale_table[mb_pos2]; |
1538 |
if(0 && q1 && q2 && q1 != q2) { |
1539 |
q1 = s->y_dc_scale_table[q1]; |
1540 |
q2 = s->y_dc_scale_table[q2]; |
1541 |
pred = (pred * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
1542 |
} |
1543 |
|
1544 |
/* update predictor */
|
1545 |
*dc_val_ptr = &dc_val[0];
|
1546 |
return pred;
|
1547 |
} |
1548 |
|
1549 |
|
1550 |
/**
|
1551 |
* @defgroup std_mb VC1 Macroblock-level functions in Simple/Main Profiles
|
1552 |
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
|
1553 |
* @todo TODO: Integrate to MpegEncContext facilities
|
1554 |
* @{
|
1555 |
*/
|
1556 |
|
1557 |
static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr) |
1558 |
{ |
1559 |
int xy, wrap, pred, a, b, c;
|
1560 |
|
1561 |
xy = s->block_index[n]; |
1562 |
wrap = s->b8_stride; |
1563 |
|
1564 |
/* B C
|
1565 |
* A X
|
1566 |
*/
|
1567 |
a = s->coded_block[xy - 1 ];
|
1568 |
b = s->coded_block[xy - 1 - wrap];
|
1569 |
c = s->coded_block[xy - wrap]; |
1570 |
|
1571 |
if (b == c) {
|
1572 |
pred = a; |
1573 |
} else {
|
1574 |
pred = c; |
1575 |
} |
1576 |
|
1577 |
/* store value */
|
1578 |
*coded_block_ptr = &s->coded_block[xy]; |
1579 |
|
1580 |
return pred;
|
1581 |
} |
1582 |
|
1583 |
/**
|
1584 |
* Decode one AC coefficient
|
1585 |
* @param v The VC1 context
|
1586 |
* @param last Last coefficient
|
1587 |
* @param skip How much zero coefficients to skip
|
1588 |
* @param value Decoded AC coefficient value
|
1589 |
* @see 8.1.3.4
|
1590 |
*/
|
1591 |
static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset) |
1592 |
{ |
1593 |
GetBitContext *gb = &v->s.gb; |
1594 |
int index, escape, run = 0, level = 0, lst = 0; |
1595 |
|
1596 |
index = get_vlc2(gb, vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
|
1597 |
if (index != vc1_ac_sizes[codingset] - 1) { |
1598 |
run = vc1_index_decode_table[codingset][index][0];
|
1599 |
level = vc1_index_decode_table[codingset][index][1];
|
1600 |
lst = index >= vc1_last_decode_table[codingset]; |
1601 |
if(get_bits(gb, 1)) |
1602 |
level = -level; |
1603 |
} else {
|
1604 |
escape = decode210(gb); |
1605 |
if (escape != 2) { |
1606 |
index = get_vlc2(gb, vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
|
1607 |
run = vc1_index_decode_table[codingset][index][0];
|
1608 |
level = vc1_index_decode_table[codingset][index][1];
|
1609 |
lst = index >= vc1_last_decode_table[codingset]; |
1610 |
if(escape == 0) { |
1611 |
if(lst)
|
1612 |
level += vc1_last_delta_level_table[codingset][run]; |
1613 |
else
|
1614 |
level += vc1_delta_level_table[codingset][run]; |
1615 |
} else {
|
1616 |
if(lst)
|
1617 |
run += vc1_last_delta_run_table[codingset][level] + 1;
|
1618 |
else
|
1619 |
run += vc1_delta_run_table[codingset][level] + 1;
|
1620 |
} |
1621 |
if(get_bits(gb, 1)) |
1622 |
level = -level; |
1623 |
} else {
|
1624 |
int sign;
|
1625 |
lst = get_bits(gb, 1);
|
1626 |
if(v->s.esc3_level_length == 0) { |
1627 |
if(v->pq < 8 || v->dquantfrm) { // table 59 |
1628 |
v->s.esc3_level_length = get_bits(gb, 3);
|
1629 |
if(!v->s.esc3_level_length)
|
1630 |
v->s.esc3_level_length = get_bits(gb, 2) + 8; |
1631 |
} else { //table 60 |
1632 |
v->s.esc3_level_length = get_prefix(gb, 1, 6) + 2; |
1633 |
} |
1634 |
v->s.esc3_run_length = 3 + get_bits(gb, 2); |
1635 |
} |
1636 |
run = get_bits(gb, v->s.esc3_run_length); |
1637 |
sign = get_bits(gb, 1);
|
1638 |
level = get_bits(gb, v->s.esc3_level_length); |
1639 |
if(sign)
|
1640 |
level = -level; |
1641 |
} |
1642 |
} |
1643 |
|
1644 |
*last = lst; |
1645 |
*skip = run; |
1646 |
*value = level; |
1647 |
} |
1648 |
|
1649 |
/** Decode intra block in intra frames - should be faster than decode_intra_block
|
1650 |
* @param v VC1Context
|
1651 |
* @param block block to decode
|
1652 |
* @param coded are AC coeffs present or not
|
1653 |
* @param codingset set of VLC to decode data
|
1654 |
*/
|
1655 |
static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset) |
1656 |
{ |
1657 |
GetBitContext *gb = &v->s.gb; |
1658 |
MpegEncContext *s = &v->s; |
1659 |
int dc_pred_dir = 0; /* Direction of the DC prediction used */ |
1660 |
int run_diff, i;
|
1661 |
int16_t *dc_val; |
1662 |
int16_t *ac_val, *ac_val2; |
1663 |
int dcdiff;
|
1664 |
|
1665 |
/* Get DC differential */
|
1666 |
if (n < 4) { |
1667 |
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
1668 |
} else {
|
1669 |
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
1670 |
} |
1671 |
if (dcdiff < 0){ |
1672 |
av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
|
1673 |
return -1; |
1674 |
} |
1675 |
if (dcdiff)
|
1676 |
{ |
1677 |
if (dcdiff == 119 /* ESC index value */) |
1678 |
{ |
1679 |
/* TODO: Optimize */
|
1680 |
if (v->pq == 1) dcdiff = get_bits(gb, 10); |
1681 |
else if (v->pq == 2) dcdiff = get_bits(gb, 9); |
1682 |
else dcdiff = get_bits(gb, 8); |
1683 |
} |
1684 |
else
|
1685 |
{ |
1686 |
if (v->pq == 1) |
1687 |
dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3; |
1688 |
else if (v->pq == 2) |
1689 |
dcdiff = (dcdiff<<1) + get_bits(gb, 1) - 1; |
1690 |
} |
1691 |
if (get_bits(gb, 1)) |
1692 |
dcdiff = -dcdiff; |
1693 |
} |
1694 |
|
1695 |
/* Prediction */
|
1696 |
dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir); |
1697 |
*dc_val = dcdiff; |
1698 |
|
1699 |
/* Store the quantized DC coeff, used for prediction */
|
1700 |
|
1701 |
if (n < 4) { |
1702 |
block[0] = dcdiff * s->y_dc_scale;
|
1703 |
} else {
|
1704 |
block[0] = dcdiff * s->c_dc_scale;
|
1705 |
} |
1706 |
/* Skip ? */
|
1707 |
run_diff = 0;
|
1708 |
i = 0;
|
1709 |
if (!coded) {
|
1710 |
goto not_coded;
|
1711 |
} |
1712 |
|
1713 |
//AC Decoding
|
1714 |
i = 1;
|
1715 |
|
1716 |
{ |
1717 |
int last = 0, skip, value; |
1718 |
const int8_t *zz_table;
|
1719 |
int scale;
|
1720 |
int k;
|
1721 |
|
1722 |
scale = v->pq * 2 + v->halfpq;
|
1723 |
|
1724 |
if(v->s.ac_pred) {
|
1725 |
if(!dc_pred_dir)
|
1726 |
zz_table = vc1_horizontal_zz; |
1727 |
else
|
1728 |
zz_table = vc1_vertical_zz; |
1729 |
} else
|
1730 |
zz_table = vc1_normal_zz; |
1731 |
|
1732 |
ac_val = s->ac_val[0][0] + s->block_index[n] * 16; |
1733 |
ac_val2 = ac_val; |
1734 |
if(dc_pred_dir) //left |
1735 |
ac_val -= 16;
|
1736 |
else //top |
1737 |
ac_val -= 16 * s->block_wrap[n];
|
1738 |
|
1739 |
while (!last) {
|
1740 |
vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); |
1741 |
i += skip; |
1742 |
if(i > 63) |
1743 |
break;
|
1744 |
block[zz_table[i++]] = value; |
1745 |
} |
1746 |
|
1747 |
/* apply AC prediction if needed */
|
1748 |
if(s->ac_pred) {
|
1749 |
if(dc_pred_dir) { //left |
1750 |
for(k = 1; k < 8; k++) |
1751 |
block[k << 3] += ac_val[k];
|
1752 |
} else { //top |
1753 |
for(k = 1; k < 8; k++) |
1754 |
block[k] += ac_val[k + 8];
|
1755 |
} |
1756 |
} |
1757 |
/* save AC coeffs for further prediction */
|
1758 |
for(k = 1; k < 8; k++) { |
1759 |
ac_val2[k] = block[k << 3];
|
1760 |
ac_val2[k + 8] = block[k];
|
1761 |
} |
1762 |
|
1763 |
/* scale AC coeffs */
|
1764 |
for(k = 1; k < 64; k++) |
1765 |
if(block[k]) {
|
1766 |
block[k] *= scale; |
1767 |
if(!v->pquantizer)
|
1768 |
block[k] += (block[k] < 0) ? -v->pq : v->pq;
|
1769 |
} |
1770 |
|
1771 |
if(s->ac_pred) i = 63; |
1772 |
} |
1773 |
|
1774 |
not_coded:
|
1775 |
if(!coded) {
|
1776 |
int k, scale;
|
1777 |
ac_val = s->ac_val[0][0] + s->block_index[n] * 16; |
1778 |
ac_val2 = ac_val; |
1779 |
|
1780 |
scale = v->pq * 2 + v->halfpq;
|
1781 |
memset(ac_val2, 0, 16 * 2); |
1782 |
if(dc_pred_dir) {//left |
1783 |
ac_val -= 16;
|
1784 |
if(s->ac_pred)
|
1785 |
memcpy(ac_val2, ac_val, 8 * 2); |
1786 |
} else {//top |
1787 |
ac_val -= 16 * s->block_wrap[n];
|
1788 |
if(s->ac_pred)
|
1789 |
memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); |
1790 |
} |
1791 |
|
1792 |
/* apply AC prediction if needed */
|
1793 |
if(s->ac_pred) {
|
1794 |
if(dc_pred_dir) { //left |
1795 |
for(k = 1; k < 8; k++) { |
1796 |
block[k << 3] = ac_val[k] * scale;
|
1797 |
if(!v->pquantizer)
|
1798 |
block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq; |
1799 |
} |
1800 |
} else { //top |
1801 |
for(k = 1; k < 8; k++) { |
1802 |
block[k] = ac_val[k + 8] * scale;
|
1803 |
if(!v->pquantizer)
|
1804 |
block[k] += (block[k] < 0) ? -v->pq : v->pq;
|
1805 |
} |
1806 |
} |
1807 |
i = 63;
|
1808 |
} |
1809 |
} |
1810 |
s->block_last_index[n] = i; |
1811 |
|
1812 |
return 0; |
1813 |
} |
1814 |
|
1815 |
/** Decode intra block in inter frames - more generic version than vc1_decode_i_block
|
1816 |
* @param v VC1Context
|
1817 |
* @param block block to decode
|
1818 |
* @param coded are AC coeffs present or not
|
1819 |
* @param mquant block quantizer
|
1820 |
* @param codingset set of VLC to decode data
|
1821 |
*/
|
1822 |
static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset) |
1823 |
{ |
1824 |
GetBitContext *gb = &v->s.gb; |
1825 |
MpegEncContext *s = &v->s; |
1826 |
int dc_pred_dir = 0; /* Direction of the DC prediction used */ |
1827 |
int run_diff, i;
|
1828 |
int16_t *dc_val; |
1829 |
int16_t *ac_val, *ac_val2; |
1830 |
int dcdiff;
|
1831 |
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
1832 |
int a_avail = v->a_avail, c_avail = v->c_avail;
|
1833 |
|
1834 |
/* XXX: Guard against dumb values of mquant */
|
1835 |
mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant ); |
1836 |
|
1837 |
/* Set DC scale - y and c use the same */
|
1838 |
s->y_dc_scale = s->y_dc_scale_table[mquant]; |
1839 |
s->c_dc_scale = s->c_dc_scale_table[mquant]; |
1840 |
|
1841 |
/* Get DC differential */
|
1842 |
if (n < 4) { |
1843 |
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
1844 |
} else {
|
1845 |
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
1846 |
} |
1847 |
if (dcdiff < 0){ |
1848 |
av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
|
1849 |
return -1; |
1850 |
} |
1851 |
if (dcdiff)
|
1852 |
{ |
1853 |
if (dcdiff == 119 /* ESC index value */) |
1854 |
{ |
1855 |
/* TODO: Optimize */
|
1856 |
if (mquant == 1) dcdiff = get_bits(gb, 10); |
1857 |
else if (mquant == 2) dcdiff = get_bits(gb, 9); |
1858 |
else dcdiff = get_bits(gb, 8); |
1859 |
} |
1860 |
else
|
1861 |
{ |
1862 |
if (mquant == 1) |
1863 |
dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3; |
1864 |
else if (mquant == 2) |
1865 |
dcdiff = (dcdiff<<1) + get_bits(gb, 1) - 1; |
1866 |
} |
1867 |
if (get_bits(gb, 1)) |
1868 |
dcdiff = -dcdiff; |
1869 |
} |
1870 |
|
1871 |
/* Prediction */
|
1872 |
dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir); |
1873 |
*dc_val = dcdiff; |
1874 |
|
1875 |
/* Store the quantized DC coeff, used for prediction */
|
1876 |
|
1877 |
if (n < 4) { |
1878 |
block[0] = dcdiff * s->y_dc_scale;
|
1879 |
} else {
|
1880 |
block[0] = dcdiff * s->c_dc_scale;
|
1881 |
} |
1882 |
/* Skip ? */
|
1883 |
run_diff = 0;
|
1884 |
i = 0;
|
1885 |
if (!coded) {
|
1886 |
goto not_coded;
|
1887 |
} |
1888 |
|
1889 |
//AC Decoding
|
1890 |
i = 1;
|
1891 |
|
1892 |
{ |
1893 |
int last = 0, skip, value; |
1894 |
const int8_t *zz_table;
|
1895 |
int scale;
|
1896 |
int k;
|
1897 |
|
1898 |
scale = mquant * 2;
|
1899 |
|
1900 |
zz_table = vc1_simple_progressive_8x8_zz; |
1901 |
|
1902 |
ac_val = s->ac_val[0][0] + s->block_index[n] * 16; |
1903 |
ac_val2 = ac_val; |
1904 |
if(dc_pred_dir) //left |
1905 |
ac_val -= 16;
|
1906 |
else //top |
1907 |
ac_val -= 16 * s->block_wrap[n];
|
1908 |
|
1909 |
while (!last) {
|
1910 |
vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); |
1911 |
i += skip; |
1912 |
if(i > 63) |
1913 |
break;
|
1914 |
block[zz_table[i++]] = value; |
1915 |
} |
1916 |
|
1917 |
/* apply AC prediction if needed */
|
1918 |
if(s->ac_pred && (v->a_avail || v->c_avail)) {
|
1919 |
/* scale predictors if needed*/
|
1920 |
int mb_pos2, q1, q2;
|
1921 |
|
1922 |
mb_pos2 = mb_pos - dc_pred_dir - (1 - dc_pred_dir) * s->mb_stride;
|
1923 |
q1 = s->current_picture.qscale_table[mb_pos]; |
1924 |
q2 = s->current_picture.qscale_table[mb_pos2]; |
1925 |
|
1926 |
if(!c_avail) {
|
1927 |
memset(ac_val, 0, 8 * sizeof(ac_val[0])); |
1928 |
dc_pred_dir = 0;
|
1929 |
} |
1930 |
if(!a_avail) {
|
1931 |
memset(ac_val + 8, 0, 8 * sizeof(ac_val[0])); |
1932 |
dc_pred_dir = 1;
|
1933 |
} |
1934 |
if(q2 && q1 != q2) {
|
1935 |
q1 = q1 * 2 - 1; |
1936 |
q2 = q2 * 2 - 1; |
1937 |
|
1938 |
if(dc_pred_dir) { //left |
1939 |
for(k = 1; k < 8; k++) |
1940 |
block[k << 3] += (ac_val[k] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
1941 |
} else { //top |
1942 |
for(k = 1; k < 8; k++) |
1943 |
block[k] += (ac_val[k + 8] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
1944 |
} |
1945 |
} else {
|
1946 |
if(dc_pred_dir) { //left |
1947 |
for(k = 1; k < 8; k++) |
1948 |
block[k << 3] += ac_val[k];
|
1949 |
} else { //top |
1950 |
for(k = 1; k < 8; k++) |
1951 |
block[k] += ac_val[k + 8];
|
1952 |
} |
1953 |
} |
1954 |
} |
1955 |
/* save AC coeffs for further prediction */
|
1956 |
for(k = 1; k < 8; k++) { |
1957 |
ac_val2[k] = block[k << 3];
|
1958 |
ac_val2[k + 8] = block[k];
|
1959 |
} |
1960 |
|
1961 |
/* scale AC coeffs */
|
1962 |
for(k = 1; k < 64; k++) |
1963 |
if(block[k]) {
|
1964 |
block[k] *= scale; |
1965 |
if(!v->pquantizer)
|
1966 |
block[k] += (block[k] < 0) ? -mquant : mquant;
|
1967 |
} |
1968 |
|
1969 |
if(s->ac_pred) i = 63; |
1970 |
} |
1971 |
|
1972 |
not_coded:
|
1973 |
if(!coded) {
|
1974 |
int k, scale;
|
1975 |
ac_val = s->ac_val[0][0] + s->block_index[n] * 16; |
1976 |
ac_val2 = ac_val; |
1977 |
|
1978 |
if(!c_avail) {
|
1979 |
memset(ac_val, 0, 8 * sizeof(ac_val[0])); |
1980 |
dc_pred_dir = 0;
|
1981 |
} |
1982 |
if(!a_avail) {
|
1983 |
memset(ac_val + 8, 0, 8 * sizeof(ac_val[0])); |
1984 |
dc_pred_dir = 1;
|
1985 |
} |
1986 |
|
1987 |
scale = mquant * 2;
|
1988 |
memset(ac_val2, 0, 16 * 2); |
1989 |
if(dc_pred_dir) {//left |
1990 |
ac_val -= 16;
|
1991 |
if(s->ac_pred && (v->a_avail || v->c_avail))
|
1992 |
memcpy(ac_val2, ac_val, 8 * 2); |
1993 |
} else {//top |
1994 |
ac_val -= 16 * s->block_wrap[n];
|
1995 |
if(s->ac_pred && (v->a_avail || v->c_avail))
|
1996 |
memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); |
1997 |
} |
1998 |
|
1999 |
/* apply AC prediction if needed */
|
2000 |
if(s->ac_pred && (v->a_avail || v->c_avail)) {
|
2001 |
if(dc_pred_dir) { //left |
2002 |
for(k = 1; k < 8; k++) { |
2003 |
block[k << 3] = ac_val[k] * scale;
|
2004 |
if(!v->pquantizer)
|
2005 |
block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant; |
2006 |
} |
2007 |
} else { //top |
2008 |
for(k = 1; k < 8; k++) { |
2009 |
block[k] = ac_val[k + 8] * scale;
|
2010 |
if(!v->pquantizer)
|
2011 |
block[k] += (block[k] < 0) ? -mquant : mquant;
|
2012 |
} |
2013 |
} |
2014 |
i = 63;
|
2015 |
} |
2016 |
} |
2017 |
s->block_last_index[n] = i; |
2018 |
|
2019 |
return 0; |
2020 |
} |
2021 |
|
2022 |
/** Decode P block
|
2023 |
*/
|
2024 |
static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block) |
2025 |
{ |
2026 |
MpegEncContext *s = &v->s; |
2027 |
GetBitContext *gb = &s->gb; |
2028 |
int i, j;
|
2029 |
int subblkpat = 0; |
2030 |
int scale, off, idx, last, skip, value;
|
2031 |
int ttblk = ttmb & 7; |
2032 |
|
2033 |
if(ttmb == -1) { |
2034 |
ttblk = ttblk_to_tt[v->tt_index][get_vlc2(gb, vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
|
2035 |
} |
2036 |
if(ttblk == TT_4X4) {
|
2037 |
subblkpat = ~(get_vlc2(gb, vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1); |
2038 |
} |
2039 |
if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) { |
2040 |
subblkpat = decode012(gb); |
2041 |
if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits |
2042 |
if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
|
2043 |
if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
|
2044 |
} |
2045 |
scale = 2 * mquant;
|
2046 |
|
2047 |
// convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
|
2048 |
if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
|
2049 |
ttblk = TT_8X4; |
2050 |
subblkpat = 2 - (ttblk == TT_8X4_TOP);
|
2051 |
} |
2052 |
if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
|
2053 |
ttblk = TT_4X8; |
2054 |
subblkpat = 2 - (ttblk == TT_4X8_LEFT);
|
2055 |
} |
2056 |
switch(ttblk) {
|
2057 |
case TT_8X8:
|
2058 |
i = 0;
|
2059 |
last = 0;
|
2060 |
while (!last) {
|
2061 |
vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); |
2062 |
i += skip; |
2063 |
if(i > 63) |
2064 |
break;
|
2065 |
idx = vc1_simple_progressive_8x8_zz[i++]; |
2066 |
block[idx] = value * scale; |
2067 |
} |
2068 |
vc1_inv_trans(block, 8, 8); |
2069 |
break;
|
2070 |
case TT_4X4:
|
2071 |
for(j = 0; j < 4; j++) { |
2072 |
last = subblkpat & (1 << (3 - j)); |
2073 |
i = 0;
|
2074 |
off = (j & 1) * 4 + (j & 2) * 16; |
2075 |
while (!last) {
|
2076 |
vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); |
2077 |
i += skip; |
2078 |
if(i > 15) |
2079 |
break;
|
2080 |
idx = vc1_simple_progressive_4x4_zz[i++]; |
2081 |
block[idx + off] = value * scale; |
2082 |
} |
2083 |
if(!(subblkpat & (1 << (3 - j)))) |
2084 |
vc1_inv_trans(block + off, 4, 4); |
2085 |
} |
2086 |
break;
|
2087 |
case TT_8X4:
|
2088 |
for(j = 0; j < 2; j++) { |
2089 |
last = subblkpat & (1 << (1 - j)); |
2090 |
i = 0;
|
2091 |
off = j * 32;
|
2092 |
while (!last) {
|
2093 |
vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); |
2094 |
i += skip; |
2095 |
if(i > 31) |
2096 |
break;
|
2097 |
idx = vc1_simple_progressive_8x4_zz[i++]; |
2098 |
block[idx + off] = value * scale; |
2099 |
} |
2100 |
if(!(subblkpat & (1 << (1 - j)))) |
2101 |
vc1_inv_trans(block + off, 8, 4); |
2102 |
} |
2103 |
break;
|
2104 |
case TT_4X8:
|
2105 |
for(j = 0; j < 2; j++) { |
2106 |
last = subblkpat & (1 << (1 - j)); |
2107 |
i = 0;
|
2108 |
off = j * 4;
|
2109 |
while (!last) {
|
2110 |
vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); |
2111 |
i += skip; |
2112 |
if(i > 31) |
2113 |
break;
|
2114 |
idx = vc1_simple_progressive_4x8_zz[i++]; |
2115 |
block[idx + off] = value * scale; |
2116 |
} |
2117 |
if(!(subblkpat & (1 << (1 - j)))) |
2118 |
vc1_inv_trans(block + off, 4, 8); |
2119 |
} |
2120 |
break;
|
2121 |
} |
2122 |
return 0; |
2123 |
} |
2124 |
|
2125 |
|
2126 |
/** Decode one P-frame MB (in Simple/Main profile)
|
2127 |
* @todo TODO: Extend to AP
|
2128 |
* @fixme FIXME: DC value for inter blocks not set
|
2129 |
*/
|
2130 |
static int vc1_decode_p_mb(VC1Context *v, DCTELEM block[6][64]) |
2131 |
{ |
2132 |
MpegEncContext *s = &v->s; |
2133 |
GetBitContext *gb = &s->gb; |
2134 |
int i, j;
|
2135 |
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
2136 |
int cbp; /* cbp decoding stuff */ |
2137 |
int hybrid_pred; /* Prediction types */ |
2138 |
int mqdiff, mquant; /* MB quantization */ |
2139 |
int ttmb = v->ttmb; /* MB Transform type */ |
2140 |
int status;
|
2141 |
|
2142 |
static const int size_table[6] = { 0, 2, 3, 4, 5, 8 }, |
2143 |
offset_table[6] = { 0, 1, 3, 7, 15, 31 }; |
2144 |
int mb_has_coeffs = 1; /* last_flag */ |
2145 |
int dmv_x, dmv_y; /* Differential MV components */ |
2146 |
int index, index1; /* LUT indices */ |
2147 |
int val, sign; /* temp values */ |
2148 |
int first_block = 1; |
2149 |
int dst_idx, off;
|
2150 |
int skipped, fourmv;
|
2151 |
|
2152 |
mquant = v->pq; /* Loosy initialization */
|
2153 |
|
2154 |
if (v->mv_type_is_raw)
|
2155 |
fourmv = get_bits1(gb); |
2156 |
else
|
2157 |
fourmv = v->mv_type_mb_plane[mb_pos]; |
2158 |
if (v->skip_is_raw)
|
2159 |
skipped = get_bits1(gb); |
2160 |
else
|
2161 |
skipped = v->skip_mb_plane[mb_pos]; |
2162 |
|
2163 |
if (!fourmv) /* 1MV mode */ |
2164 |
{ |
2165 |
if (!skipped)
|
2166 |
{ |
2167 |
GET_MVDATA(dmv_x, dmv_y); |
2168 |
|
2169 |
s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16; |
2170 |
vc1_pred_mv(s, dmv_x, dmv_y, 1, v->range_x, v->range_y);
|
2171 |
|
2172 |
/* FIXME Set DC val for inter block ? */
|
2173 |
if (s->mb_intra && !mb_has_coeffs)
|
2174 |
{ |
2175 |
GET_MQUANT(); |
2176 |
s->ac_pred = get_bits(gb, 1);
|
2177 |
cbp = 0;
|
2178 |
} |
2179 |
else if (mb_has_coeffs) |
2180 |
{ |
2181 |
if (s->mb_intra) s->ac_pred = get_bits(gb, 1); |
2182 |
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
|
2183 |
GET_MQUANT(); |
2184 |
} |
2185 |
else
|
2186 |
{ |
2187 |
mquant = v->pq; |
2188 |
cbp = 0;
|
2189 |
} |
2190 |
s->current_picture.qscale_table[mb_pos] = mquant; |
2191 |
|
2192 |
if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
|
2193 |
ttmb = get_vlc2(gb, vc1_ttmb_vlc[v->tt_index].table, |
2194 |
VC1_TTMB_VLC_BITS, 2);
|
2195 |
s->dsp.clear_blocks(block[0]);
|
2196 |
vc1_mc_1mv(v); |
2197 |
dst_idx = 0;
|
2198 |
for (i=0; i<6; i++) |
2199 |
{ |
2200 |
s->dc_val[0][s->block_index[i]] = 0; |
2201 |
dst_idx += i >> 2;
|
2202 |
val = ((cbp >> (5 - i)) & 1); |
2203 |
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); |
2204 |
if(s->mb_intra) {
|
2205 |
/* check if prediction blocks A and C are available */
|
2206 |
v->a_avail = v->c_avail = 0;
|
2207 |
if((i == 2 || i == 3) || (s->mb_y && IS_INTRA(s->current_picture.mb_type[mb_pos - s->mb_stride]))) |
2208 |
v->a_avail = 1;
|
2209 |
if((i == 1 || i == 3) || (s->mb_x && IS_INTRA(s->current_picture.mb_type[mb_pos - 1]))) |
2210 |
v->c_avail = 1;
|
2211 |
|
2212 |
vc1_decode_intra_block(v, block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
|
2213 |
vc1_inv_trans(block[i], 8, 8); |
2214 |
for(j = 0; j < 64; j++) block[i][j] += 128; |
2215 |
s->dsp.put_pixels_clamped(block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); |
2216 |
/* TODO: proper loop filtering */
|
2217 |
if(v->pq >= 9 && v->overlap) { |
2218 |
if(v->a_avail)
|
2219 |
s->dsp.h263_v_loop_filter(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), s->y_dc_scale); |
2220 |
if(v->c_avail)
|
2221 |
s->dsp.h263_h_loop_filter(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), s->y_dc_scale); |
2222 |
} |
2223 |
} else if(val) { |
2224 |
vc1_decode_p_block(v, block[i], i, mquant, ttmb, first_block); |
2225 |
if(!v->ttmbf && ttmb < 8) ttmb = -1; |
2226 |
first_block = 0;
|
2227 |
s->dsp.add_pixels_clamped(block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
|
2228 |
} |
2229 |
} |
2230 |
} |
2231 |
else //Skipped |
2232 |
{ |
2233 |
s->mb_intra = 0;
|
2234 |
s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP; |
2235 |
vc1_pred_mv(s, 0, 0, 1, v->range_x, v->range_y); |
2236 |
vc1_mc_1mv(v); |
2237 |
return 0; |
2238 |
} |
2239 |
} //1MV mode
|
2240 |
else //4MV mode |
2241 |
{//FIXME: looks not conforming to standard and is not even theoretically complete
|
2242 |
if (!skipped /* unskipped MB */) |
2243 |
{ |
2244 |
int blk_intra[4], blk_coded[4]; |
2245 |
/* Get CBPCY */
|
2246 |
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
|
2247 |
for (i=0; i<4; i++) |
2248 |
{ |
2249 |
val = ((cbp >> (5 - i)) & 1); |
2250 |
blk_intra[i] = 0;
|
2251 |
blk_coded[i] = val; |
2252 |
if(val) {
|
2253 |
GET_MVDATA(dmv_x, dmv_y); |
2254 |
blk_intra[i] = s->mb_intra; |
2255 |
} |
2256 |
if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */) |
2257 |
hybrid_pred = get_bits(gb, 1);
|
2258 |
} |
2259 |
if((blk_intra[0] | blk_intra[1] | blk_intra[2] | blk_intra[3]) || |
2260 |
(blk_coded[0] | blk_coded[1] | blk_coded[2] | blk_coded[3])) { |
2261 |
GET_MQUANT(); |
2262 |
|
2263 |
if (s->mb_intra /* One of the 4 blocks is intra */ |
2264 |
/* non-zero pred for that block */)
|
2265 |
s->ac_pred = get_bits(gb, 1);
|
2266 |
if (!v->ttmbf)
|
2267 |
ttmb = get_vlc2(gb, vc1_ttmb_vlc[v->tt_index].table, |
2268 |
VC1_TTMB_VLC_BITS, 12);
|
2269 |
for(i = 0; i < 6; i++) { |
2270 |
val = ((cbp >> (5 - i)) & 1); |
2271 |
if(i & 4 || blk_intra[i] || val) { |
2272 |
if(i < 4 && blk_intra[i]) |
2273 |
status = vc1_decode_intra_block(v, block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
|
2274 |
else
|
2275 |
status = vc1_decode_p_block(v, block[i], i, mquant, ttmb, 0);
|
2276 |
} |
2277 |
} |
2278 |
} |
2279 |
return status;
|
2280 |
} |
2281 |
else //Skipped MB |
2282 |
{ |
2283 |
/* XXX: Skipped => cbp=0 and mquant doesn't matter ? */
|
2284 |
for (i=0; i<4; i++) |
2285 |
{ |
2286 |
if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */) |
2287 |
hybrid_pred = get_bits(gb, 1);
|
2288 |
} |
2289 |
/* TODO: blah */
|
2290 |
return 0; |
2291 |
} |
2292 |
} |
2293 |
|
2294 |
/* Should never happen */
|
2295 |
return -1; |
2296 |
} |
2297 |
|
2298 |
/** Decode blocks of I-frame
|
2299 |
*/
|
2300 |
static void vc1_decode_i_blocks(VC1Context *v) |
2301 |
{ |
2302 |
int k;
|
2303 |
MpegEncContext *s = &v->s; |
2304 |
int cbp, val;
|
2305 |
uint8_t *coded_val; |
2306 |
int mb_pos;
|
2307 |
|
2308 |
/* select codingmode used for VLC tables selection */
|
2309 |
switch(v->y_ac_table_index){
|
2310 |
case 0: |
2311 |
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
2312 |
break;
|
2313 |
case 1: |
2314 |
v->codingset = CS_HIGH_MOT_INTRA; |
2315 |
break;
|
2316 |
case 2: |
2317 |
v->codingset = CS_MID_RATE_INTRA; |
2318 |
break;
|
2319 |
} |
2320 |
|
2321 |
switch(v->c_ac_table_index){
|
2322 |
case 0: |
2323 |
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
2324 |
break;
|
2325 |
case 1: |
2326 |
v->codingset2 = CS_HIGH_MOT_INTER; |
2327 |
break;
|
2328 |
case 2: |
2329 |
v->codingset2 = CS_MID_RATE_INTER; |
2330 |
break;
|
2331 |
} |
2332 |
|
2333 |
/* Set DC scale - y and c use the same */
|
2334 |
s->y_dc_scale = s->y_dc_scale_table[v->pq]; |
2335 |
s->c_dc_scale = s->c_dc_scale_table[v->pq]; |
2336 |
|
2337 |
//do frame decode
|
2338 |
s->mb_x = s->mb_y = 0;
|
2339 |
s->mb_intra = 1;
|
2340 |
ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); |
2341 |
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { |
2342 |
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { |
2343 |
ff_init_block_index(s); |
2344 |
ff_update_block_index(s); |
2345 |
s->dsp.clear_blocks(s->block[0]);
|
2346 |
mb_pos = s->mb_x + s->mb_y * s->mb_width; |
2347 |
s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; |
2348 |
s->current_picture.qscale_table[mb_pos] = v->pq; |
2349 |
|
2350 |
// do actual MB decoding and displaying
|
2351 |
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
|
2352 |
v->s.ac_pred = get_bits(&v->s.gb, 1);
|
2353 |
|
2354 |
for(k = 0; k < 6; k++) { |
2355 |
val = ((cbp >> (5 - k)) & 1); |
2356 |
|
2357 |
if (k < 4) { |
2358 |
int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
|
2359 |
val = val ^ pred; |
2360 |
*coded_val = val; |
2361 |
} |
2362 |
cbp |= val << (5 - k);
|
2363 |
|
2364 |
vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
|
2365 |
|
2366 |
vc1_inv_trans(s->block[k], 8, 8); |
2367 |
if(v->pq >= 9 && v->overlap) { |
2368 |
vc1_overlap_block(s, s->block[k], k, (s->mb_y || k>1), (s->mb_x || (k != 0 && k != 2))); |
2369 |
} |
2370 |
} |
2371 |
|
2372 |
vc1_put_block(v, s->block); |
2373 |
if(v->pq >= 9 && v->overlap) { /* XXX: do proper overlapping insted of loop filter */ |
2374 |
if(s->mb_y) {
|
2375 |
s->dsp.h263_v_loop_filter(s->dest[0], s->linesize, s->y_dc_scale);
|
2376 |
s->dsp.h263_v_loop_filter(s->dest[0] + 8, s->linesize, s->y_dc_scale); |
2377 |
s->dsp.h263_v_loop_filter(s->dest[1], s->uvlinesize, s->y_dc_scale);
|
2378 |
s->dsp.h263_v_loop_filter(s->dest[2], s->uvlinesize, s->y_dc_scale);
|
2379 |
} |
2380 |
s->dsp.h263_v_loop_filter(s->dest[0] + 8 * s->linesize, s->linesize, s->y_dc_scale); |
2381 |
s->dsp.h263_v_loop_filter(s->dest[0] + 8 * s->linesize + 8, s->linesize, s->y_dc_scale); |
2382 |
if(s->mb_x) {
|
2383 |
s->dsp.h263_h_loop_filter(s->dest[0], s->linesize, s->y_dc_scale);
|
2384 |
s->dsp.h263_h_loop_filter(s->dest[0] + 8 * s->linesize, s->linesize, s->y_dc_scale); |
2385 |
s->dsp.h263_h_loop_filter(s->dest[1], s->uvlinesize, s->y_dc_scale);
|
2386 |
s->dsp.h263_h_loop_filter(s->dest[2], s->uvlinesize, s->y_dc_scale);
|
2387 |
} |
2388 |
s->dsp.h263_h_loop_filter(s->dest[0] + 8, s->linesize, s->y_dc_scale); |
2389 |
s->dsp.h263_h_loop_filter(s->dest[0] + 8 * s->linesize + 8, s->linesize, s->y_dc_scale); |
2390 |
} |
2391 |
|
2392 |
if(get_bits_count(&s->gb) > v->bits) {
|
2393 |
av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
|
2394 |
return;
|
2395 |
} |
2396 |
} |
2397 |
ff_draw_horiz_band(s, s->mb_y * 16, 16); |
2398 |
} |
2399 |
} |
2400 |
|
2401 |
static void vc1_decode_p_blocks(VC1Context *v) |
2402 |
{ |
2403 |
MpegEncContext *s = &v->s; |
2404 |
|
2405 |
/* select codingmode used for VLC tables selection */
|
2406 |
switch(v->c_ac_table_index){
|
2407 |
case 0: |
2408 |
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
2409 |
break;
|
2410 |
case 1: |
2411 |
v->codingset = CS_HIGH_MOT_INTRA; |
2412 |
break;
|
2413 |
case 2: |
2414 |
v->codingset = CS_MID_RATE_INTRA; |
2415 |
break;
|
2416 |
} |
2417 |
|
2418 |
switch(v->c_ac_table_index){
|
2419 |
case 0: |
2420 |
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
2421 |
break;
|
2422 |
case 1: |
2423 |
v->codingset2 = CS_HIGH_MOT_INTER; |
2424 |
break;
|
2425 |
case 2: |
2426 |
v->codingset2 = CS_MID_RATE_INTER; |
2427 |
break;
|
2428 |
} |
2429 |
|
2430 |
ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); |
2431 |
s->first_slice_line = 1;
|
2432 |
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { |
2433 |
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { |
2434 |
ff_init_block_index(s); |
2435 |
ff_update_block_index(s); |
2436 |
s->dsp.clear_blocks(s->block[0]);
|
2437 |
|
2438 |
vc1_decode_p_mb(v, s->block); |
2439 |
if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) { |
2440 |
av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
|
2441 |
return;
|
2442 |
} |
2443 |
} |
2444 |
ff_draw_horiz_band(s, s->mb_y * 16, 16); |
2445 |
s->first_slice_line = 0;
|
2446 |
} |
2447 |
} |
2448 |
|
2449 |
static void vc1_decode_blocks(VC1Context *v) |
2450 |
{ |
2451 |
|
2452 |
v->s.esc3_level_length = 0;
|
2453 |
|
2454 |
switch(v->s.pict_type) {
|
2455 |
case I_TYPE:
|
2456 |
vc1_decode_i_blocks(v); |
2457 |
break;
|
2458 |
case P_TYPE:
|
2459 |
vc1_decode_p_blocks(v); |
2460 |
break;
|
2461 |
} |
2462 |
} |
2463 |
|
2464 |
|
2465 |
/** Initialize a VC1/WMV3 decoder
|
2466 |
* @todo TODO: Handle VC-1 IDUs (Transport level?)
|
2467 |
* @todo TODO: Decypher remaining bits in extra_data
|
2468 |
*/
|
2469 |
static int vc1_decode_init(AVCodecContext *avctx) |
2470 |
{ |
2471 |
VC1Context *v = avctx->priv_data; |
2472 |
MpegEncContext *s = &v->s; |
2473 |
GetBitContext gb; |
2474 |
|
2475 |
if (!avctx->extradata_size || !avctx->extradata) return -1; |
2476 |
avctx->pix_fmt = PIX_FMT_YUV420P; |
2477 |
v->s.avctx = avctx; |
2478 |
avctx->flags |= CODEC_FLAG_EMU_EDGE; |
2479 |
v->s.flags |= CODEC_FLAG_EMU_EDGE; |
2480 |
|
2481 |
if(ff_h263_decode_init(avctx) < 0) |
2482 |
return -1; |
2483 |
if (vc1_init_common(v) < 0) return -1; |
2484 |
|
2485 |
av_log(avctx, AV_LOG_INFO, "This decoder is not supposed to produce picture. Dont report this as a bug!\n");
|
2486 |
av_log(avctx, AV_LOG_INFO, "If you see a picture, don't believe your eyes.\n");
|
2487 |
|
2488 |
avctx->coded_width = avctx->width; |
2489 |
avctx->coded_height = avctx->height; |
2490 |
if (avctx->codec_id == CODEC_ID_WMV3)
|
2491 |
{ |
2492 |
int count = 0; |
2493 |
|
2494 |
// looks like WMV3 has a sequence header stored in the extradata
|
2495 |
// advanced sequence header may be before the first frame
|
2496 |
// the last byte of the extradata is a version number, 1 for the
|
2497 |
// samples we can decode
|
2498 |
|
2499 |
init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
|
2500 |
|
2501 |
if (decode_sequence_header(avctx, &gb) < 0) |
2502 |
return -1; |
2503 |
|
2504 |
count = avctx->extradata_size*8 - get_bits_count(&gb);
|
2505 |
if (count>0) |
2506 |
{ |
2507 |
av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
|
2508 |
count, get_bits(&gb, count)); |
2509 |
} |
2510 |
else if (count < 0) |
2511 |
{ |
2512 |
av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
|
2513 |
} |
2514 |
} |
2515 |
avctx->has_b_frames= !!(avctx->max_b_frames); |
2516 |
|
2517 |
s->mb_width = (avctx->coded_width+15)>>4; |
2518 |
s->mb_height = (avctx->coded_height+15)>>4; |
2519 |
|
2520 |
/* Allocate mb bitplanes */
|
2521 |
v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height); |
2522 |
v->skip_mb_plane = av_malloc(s->mb_stride * s->mb_height); |
2523 |
|
2524 |
/* For predictors */
|
2525 |
v->previous_line_cbpcy = (uint8_t *)av_malloc(s->mb_stride*4);
|
2526 |
if (!v->previous_line_cbpcy) return -1; |
2527 |
|
2528 |
/* Init coded blocks info */
|
2529 |
if (v->profile == PROFILE_ADVANCED)
|
2530 |
{ |
2531 |
// if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
|
2532 |
// return -1;
|
2533 |
// if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
|
2534 |
// return -1;
|
2535 |
} |
2536 |
|
2537 |
return 0; |
2538 |
} |
2539 |
|
2540 |
|
2541 |
/** Decode a VC1/WMV3 frame
|
2542 |
* @todo TODO: Handle VC-1 IDUs (Transport level?)
|
2543 |
* @warning Initial try at using MpegEncContext stuff
|
2544 |
*/
|
2545 |
static int vc1_decode_frame(AVCodecContext *avctx, |
2546 |
void *data, int *data_size, |
2547 |
uint8_t *buf, int buf_size)
|
2548 |
{ |
2549 |
VC1Context *v = avctx->priv_data; |
2550 |
MpegEncContext *s = &v->s; |
2551 |
AVFrame *pict = data; |
2552 |
|
2553 |
/* no supplementary picture */
|
2554 |
if (buf_size == 0) { |
2555 |
/* special case for last picture */
|
2556 |
if (s->low_delay==0 && s->next_picture_ptr) { |
2557 |
*pict= *(AVFrame*)s->next_picture_ptr; |
2558 |
s->next_picture_ptr= NULL;
|
2559 |
|
2560 |
*data_size = sizeof(AVFrame);
|
2561 |
} |
2562 |
|
2563 |
return 0; |
2564 |
} |
2565 |
|
2566 |
//we need to set current_picture_ptr before reading the header, otherwise we cant store anyting im there
|
2567 |
if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){ |
2568 |
int i= ff_find_unused_picture(s, 0); |
2569 |
s->current_picture_ptr= &s->picture[i]; |
2570 |
} |
2571 |
|
2572 |
avctx->has_b_frames= !s->low_delay; |
2573 |
|
2574 |
init_get_bits(&s->gb, buf, buf_size*8);
|
2575 |
// do parse frame header
|
2576 |
if(vc1_parse_frame_header(v, &s->gb) == -1) |
2577 |
return -1; |
2578 |
|
2579 |
if(s->pict_type != I_TYPE && s->pict_type != P_TYPE)return -1; |
2580 |
|
2581 |
// for hurry_up==5
|
2582 |
s->current_picture.pict_type= s->pict_type; |
2583 |
s->current_picture.key_frame= s->pict_type == I_TYPE; |
2584 |
|
2585 |
/* skip B-frames if we don't have reference frames */
|
2586 |
if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)) return -1;//buf_size; |
2587 |
/* skip b frames if we are in a hurry */
|
2588 |
if(avctx->hurry_up && s->pict_type==B_TYPE) return -1;//buf_size; |
2589 |
if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==B_TYPE)
|
2590 |
|| (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=I_TYPE) |
2591 |
|| avctx->skip_frame >= AVDISCARD_ALL) |
2592 |
return buf_size;
|
2593 |
/* skip everything if we are in a hurry>=5 */
|
2594 |
if(avctx->hurry_up>=5) return -1;//buf_size; |
2595 |
|
2596 |
if(s->next_p_frame_damaged){
|
2597 |
if(s->pict_type==B_TYPE)
|
2598 |
return buf_size;
|
2599 |
else
|
2600 |
s->next_p_frame_damaged=0;
|
2601 |
} |
2602 |
|
2603 |
if(MPV_frame_start(s, avctx) < 0) |
2604 |
return -1; |
2605 |
|
2606 |
ff_er_frame_start(s); |
2607 |
|
2608 |
v->bits = buf_size * 8;
|
2609 |
vc1_decode_blocks(v); |
2610 |
//av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
|
2611 |
// if(get_bits_count(&s->gb) > buf_size * 8)
|
2612 |
// return -1;
|
2613 |
ff_er_frame_end(s); |
2614 |
|
2615 |
MPV_frame_end(s); |
2616 |
|
2617 |
assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type); |
2618 |
assert(s->current_picture.pict_type == s->pict_type); |
2619 |
if (s->pict_type == B_TYPE || s->low_delay) {
|
2620 |
*pict= *(AVFrame*)s->current_picture_ptr; |
2621 |
} else if (s->last_picture_ptr != NULL) { |
2622 |
*pict= *(AVFrame*)s->last_picture_ptr; |
2623 |
} |
2624 |
|
2625 |
if(s->last_picture_ptr || s->low_delay){
|
2626 |
*data_size = sizeof(AVFrame);
|
2627 |
ff_print_debug_info(s, pict); |
2628 |
} |
2629 |
|
2630 |
/* Return the Picture timestamp as the frame number */
|
2631 |
/* we substract 1 because it is added on utils.c */
|
2632 |
avctx->frame_number = s->picture_number - 1;
|
2633 |
|
2634 |
return buf_size;
|
2635 |
} |
2636 |
|
2637 |
|
2638 |
/** Close a VC1/WMV3 decoder
|
2639 |
* @warning Initial try at using MpegEncContext stuff
|
2640 |
*/
|
2641 |
static int vc1_decode_end(AVCodecContext *avctx) |
2642 |
{ |
2643 |
VC1Context *v = avctx->priv_data; |
2644 |
|
2645 |
av_freep(&v->hrd_rate); |
2646 |
av_freep(&v->hrd_buffer); |
2647 |
MPV_common_end(&v->s); |
2648 |
av_freep(&v->mv_type_mb_plane); |
2649 |
av_freep(&v->skip_mb_plane); |
2650 |
return 0; |
2651 |
} |
2652 |
|
2653 |
|
2654 |
AVCodec vc1_decoder = { |
2655 |
"vc1",
|
2656 |
CODEC_TYPE_VIDEO, |
2657 |
CODEC_ID_VC1, |
2658 |
sizeof(VC1Context),
|
2659 |
vc1_decode_init, |
2660 |
NULL,
|
2661 |
vc1_decode_end, |
2662 |
vc1_decode_frame, |
2663 |
CODEC_CAP_DELAY, |
2664 |
NULL
|
2665 |
}; |
2666 |
|
2667 |
AVCodec wmv3_decoder = { |
2668 |
"wmv3",
|
2669 |
CODEC_TYPE_VIDEO, |
2670 |
CODEC_ID_WMV3, |
2671 |
sizeof(VC1Context),
|
2672 |
vc1_decode_init, |
2673 |
NULL,
|
2674 |
vc1_decode_end, |
2675 |
vc1_decode_frame, |
2676 |
CODEC_CAP_DELAY, |
2677 |
NULL
|
2678 |
}; |