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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/**
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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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/**
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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,
|
| 433 |
vc1_imode_bits, 1, 1, |
| 434 |
vc1_imode_codes, 1, 1, 1); |
| 435 |
for (i=0; i<3; i++) |
| 436 |
{
|
| 437 |
init_vlc(&vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
|
| 438 |
vc1_ttmb_bits[i], 1, 1, |
| 439 |
vc1_ttmb_codes[i], 2, 2, 1); |
| 440 |
init_vlc(&vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
|
| 441 |
vc1_ttblk_bits[i], 1, 1, |
| 442 |
vc1_ttblk_codes[i], 1, 1, 1); |
| 443 |
init_vlc(&vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
|
| 444 |
vc1_subblkpat_bits[i], 1, 1, |
| 445 |
vc1_subblkpat_codes[i], 1, 1, 1); |
| 446 |
} |
| 447 |
for(i=0; i<4; i++) |
| 448 |
{
|
| 449 |
init_vlc(&vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
|
| 450 |
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 |
}; |