--- trunk/xvidcore/src/bitstream/bitstream.c 2003/02/15 08:39:17 850 +++ trunk/xvidcore/src/bitstream/bitstream.c 2003/02/15 15:22:19 851 @@ -1,66 +1,79 @@ -/***************************************************************************** - * - * XVID MPEG-4 VIDEO CODEC - * - Bitstream reader/writer functions - - * - * Copyright (C) 2001-2002 - Peter Ross - * - * This file is part of XviD, a free MPEG-4 video encoder/decoder - * - * XviD is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * Under section 8 of the GNU General Public License, the copyright - * holders of XVID explicitly forbid distribution in the following - * countries: - * - * - Japan - * - United States of America - * - * Linking XviD statically or dynamically with other modules is making a - * combined work based on XviD. Thus, the terms and conditions of the - * GNU General Public License cover the whole combination. - * - * As a special exception, the copyright holders of XviD give you - * permission to link XviD with independent modules that communicate with - * XviD solely through the VFW1.1 and DShow interfaces, regardless of the - * license terms of these independent modules, and to copy and distribute - * the resulting combined work under terms of your choice, provided that - * every copy of the combined work is accompanied by a complete copy of - * the source code of XviD (the version of XviD used to produce the - * combined work), being distributed under the terms of the GNU General - * Public License plus this exception. An independent module is a module - * which is not derived from or based on XviD. - * - * Note that people who make modified versions of XviD are not obligated - * to grant this special exception for their modified versions; it is - * their choice whether to do so. The GNU General Public License gives - * permission to release a modified version without this exception; this - * exception also makes it possible to release a modified version which - * carries forward this exception. - * - * $Id: bitstream.c,v 1.37 2002-12-15 01:21:12 edgomez Exp $ - * - ****************************************************************************/ + /****************************************************************************** + * * + * This file is part of XviD, a free MPEG-4 video encoder/decoder * + * * + * XviD is an implementation of a part of one or more MPEG-4 Video tools * + * as specified in ISO/IEC 14496-2 standard. Those intending to use this * + * software module in hardware or software products are advised that its * + * use may infringe existing patents or copyrights, and any such use * + * would be at such party's own risk. The original developer of this * + * software module and his/her company, and subsequent editors and their * + * companies, will have no liability for use of this software or * + * modifications or derivatives thereof. * + * * + * XviD is free software; you can redistribute it and/or modify it * + * under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * XviD is distributed in the hope that it will be useful, but * + * WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the Free Software * + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * + * * + ******************************************************************************/ + + /****************************************************************************** + * * + * bitstream.c * + * * + * Copyright (C) 2001 - Peter Ross * + * * + * For more information visit the XviD homepage: http://www.xvid.org * + * * + ******************************************************************************/ + + /****************************************************************************** + * * + * Revision history: * + * * + * 05.01.2003 GMC support - gruel * + * 04.10.2002 qpel support - Isibaar * + * 11.07.2002 add VOP width & height return to dec when dec->width * + * or dec->height is 0 (for use in examples/ex1.c) * + * MinChen * + * 22.05.2002 bs_put_matrix fix * + * 20.05.2002 added BitstreamWriteUserData * + * 19.06.2002 Fix a little bug in use custom quant matrix * + * MinChen * + * 08.05.2002 add low_delay support for B_VOP decode * + * MinChen * + * 06.05.2002 low_delay * + * 06.05.2002 fixed fincr/fbase error * + * 01.05.2002 added BVOP support to BitstreamWriteVopHeader * + * 15.04.2002 rewrite log2bin use asm386 By MinChen * + * 26.03.2002 interlacing support * + * 03.03.2002 qmatrix writing * + * 03.03.2002 merged BITREADER and BITWRITER * + * 30.02.2002 intra_dc_threshold support * + * 04.12.2001 support for additional headers * + * 16.12.2001 inital version * + * * + ******************************************************************************/ + + +#include +#include #include "bitstream.h" #include "zigzag.h" #include "../quant/quant_matrix.h" +#include "mbcoding.h" -/***************************************************************************** - * Functions - ****************************************************************************/ static uint32_t __inline log2bin(uint32_t value) @@ -108,7 +121,7 @@ matrix[scan_tables[0][i++]] = value; } while (value != 0 && i < 64); - i--; /* fix little bug at coeff not full */ + i--; // fix little bug at coeff not full while (i < 64) { matrix[scan_tables[0][i++]] = last; @@ -117,50 +130,291 @@ -/* for PVOP addbits == fcode - 1 */ -/* for BVOP addbits == max(fcode,bcode) - 1 */ -/* returns mbpos */ +// for PVOP addbits == fcode - 1 +// for BVOP addbits == max(fcode,bcode) - 1 +// returns mbpos int -read_video_packet_header(Bitstream *bs, const int addbits, int * quant) +read_video_packet_header(Bitstream *bs, + DECODER * dec, + const int addbits, + int * quant, + int * fcode_forward, + int * fcode_backward, + int * intra_dc_threshold) { - int nbits; + int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits; + int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1); int mbnum; - int hec; - - nbits = NUMBITS_VP_RESYNC_MARKER + addbits; + int hec = 0; BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); - BitstreamSkip(bs, nbits); + BitstreamSkip(bs, startcode_bits); DPRINTF(DPRINTF_STARTCODE, ""); - /* if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { */ - /* hec */ - /* vop_width */ - /* marker_bit */ - /* vop_height */ - /* marker_bit */ - - /*} */ + if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) + { + hec = BitstreamGetBit(bs); /* header_extension_code */ + if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) + { + BitstreamSkip(bs, 13); /* vop_width */ + READ_MARKER(); + BitstreamSkip(bs, 13); /* vop_height */ + READ_MARKER(); + BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ + READ_MARKER(); + BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ + READ_MARKER(); + } + } - mbnum = BitstreamGetBits(bs, 9); + mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ DPRINTF(DPRINTF_HEADER, "mbnum %i", mbnum); - /* if (dec->shape != VIDOBJLAY_SHAPE_BINARYONLY) */ - *quant = BitstreamGetBits(bs, 5); - DPRINTF(DPRINTF_HEADER, "quant %i", *quant); + if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) + { + *quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */ + DPRINTF(DPRINTF_HEADER, "quant %i", *quant); + } + + if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) + hec = BitstreamGetBit(bs); /* header_extension_code */ + - /* if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) */ - hec = BitstreamGetBit(bs); DPRINTF(DPRINTF_HEADER, "header_extension_code %i", hec); - /* if (hec) */ - /* .. decoder hec-header ... */ + if (hec) + { + int time_base; + int time_increment; + int coding_type; + + for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */ + READ_MARKER(); + if (dec->time_inc_bits) + time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ + READ_MARKER(); + DPRINTF(DPRINTF_HEADER,"time %i:%i", time_base, time_increment); + + coding_type = BitstreamGetBits(bs, 2); + DPRINTF(DPRINTF_HEADER,"coding_type %i", coding_type); + + if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) + { + BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ + if (coding_type != I_VOP) + BitstreamSkip(bs, 1); /* vop_shape_coding_type */ + } + + if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) + { + *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; + + if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP && + dec->sprite_warping_points > 0) + { + // TODO: sprite trajectory + } + if (dec->reduced_resolution_enable && + dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && + (coding_type == P_VOP || coding_type == I_VOP)) + { + BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */ + } + + if (coding_type != I_VOP && fcode_forward) + { + *fcode_forward = BitstreamGetBits(bs, 3); + DPRINTF(DPRINTF_HEADER,"fcode_forward %i", *fcode_forward); + } + + if (coding_type == B_VOP && fcode_backward) + { + *fcode_backward = BitstreamGetBits(bs, 3); + DPRINTF(DPRINTF_HEADER,"fcode_backward %i", *fcode_backward); + } + } + + } + + if (dec->newpred_enable) + { + int vop_id; + int vop_id_for_prediction; + + vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); + DPRINTF(DPRINTF_HEADER, "vop_id %i", vop_id); + if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ + { + vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); + DPRINTF(DPRINTF_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction); + } + READ_MARKER(); + } return mbnum; } + +/* vol estimation header */ +static void +read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec) +{ + ESTIMATION * e = &dec->estimation; + + e->method = BitstreamGetBits(bs, 2); /* estimation_method */ + DPRINTF(DPRINTF_HEADER,"+ complexity_estimation_header; method=%i", e->method); + + if (e->method == 0 || e->method == 1) + { + if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */ + { + e->opaque = BitstreamGetBit(bs); /* opaque */ + e->transparent = BitstreamGetBit(bs); /* transparent */ + e->intra_cae = BitstreamGetBit(bs); /* intra_cae */ + e->inter_cae = BitstreamGetBit(bs); /* inter_cae */ + e->no_update = BitstreamGetBit(bs); /* no_update */ + e->upsampling = BitstreamGetBit(bs); /* upsampling */ + } + + if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */ + { + e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */ + e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */ + e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */ + e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */ + } + } + + READ_MARKER(); + + if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */ + { + e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */ + e->dct_lines = BitstreamGetBit(bs); /* dct_lines */ + e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */ + e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */ + } + + if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */ + { + e->apm = BitstreamGetBit(bs); /* apm */ + e->npm = BitstreamGetBit(bs); /* npm */ + e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */ + e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */ + e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */ + e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */ + } + + READ_MARKER(); + + if (e->method == 1) + { + if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */ + { + e->sadct = BitstreamGetBit(bs); /* sadct */ + e->quarterpel = BitstreamGetBit(bs); /* quarterpel */ + } + } +} + + +/* vop estimation header */ +static void +read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type) +{ + ESTIMATION * e = &dec->estimation; + + if (e->method == 0 || e->method == 1) + { + if (coding_type == I_VOP) { + if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */ + if (e->transparent) BitstreamSkip(bs, 8); /* */ + if (e->intra_cae) BitstreamSkip(bs, 8); /* */ + if (e->inter_cae) BitstreamSkip(bs, 8); /* */ + if (e->no_update) BitstreamSkip(bs, 8); /* */ + if (e->upsampling) BitstreamSkip(bs, 8); /* */ + if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ + if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ + if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ + if (e->dct_lines) BitstreamSkip(bs, 8); /* */ + if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ + if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ + if (e->sadct) BitstreamSkip(bs, 8); /* */ + } + + if (coding_type == P_VOP) { + if (e->opaque) BitstreamSkip(bs, 8); /* */ + if (e->transparent) BitstreamSkip(bs, 8); /* */ + if (e->intra_cae) BitstreamSkip(bs, 8); /* */ + if (e->inter_cae) BitstreamSkip(bs, 8); /* */ + if (e->no_update) BitstreamSkip(bs, 8); /* */ + if (e->upsampling) BitstreamSkip(bs, 8); /* */ + if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ + if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ + if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ + if (e->dct_lines) BitstreamSkip(bs, 8); /* */ + if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ + if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ + if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ + if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ + if (e->apm) BitstreamSkip(bs, 8); /* */ + if (e->npm) BitstreamSkip(bs, 8); /* */ + if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ + if (e->halfpel2) BitstreamSkip(bs, 8); /* */ + if (e->halfpel4) BitstreamSkip(bs, 8); /* */ + if (e->sadct) BitstreamSkip(bs, 8); /* */ + if (e->quarterpel) BitstreamSkip(bs, 8); /* */ + } + if (coding_type == B_VOP) { + if (e->opaque) BitstreamSkip(bs, 8); /* */ + if (e->transparent) BitstreamSkip(bs, 8); /* */ + if (e->intra_cae) BitstreamSkip(bs, 8); /* */ + if (e->inter_cae) BitstreamSkip(bs, 8); /* */ + if (e->no_update) BitstreamSkip(bs, 8); /* */ + if (e->upsampling) BitstreamSkip(bs, 8); /* */ + if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ + if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ + if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ + if (e->dct_lines) BitstreamSkip(bs, 8); /* */ + if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ + if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ + if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ + if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ + if (e->apm) BitstreamSkip(bs, 8); /* */ + if (e->npm) BitstreamSkip(bs, 8); /* */ + if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ + if (e->halfpel2) BitstreamSkip(bs, 8); /* */ + if (e->halfpel4) BitstreamSkip(bs, 8); /* */ + if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ + if (e->sadct) BitstreamSkip(bs, 8); /* */ + if (e->quarterpel) BitstreamSkip(bs, 8); /* */ + } + + if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) { + if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ + if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ + if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ + if (e->dct_lines) BitstreamSkip(bs, 8); /* */ + if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ + if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ + if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ + if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ + if (e->apm) BitstreamSkip(bs, 8); /* */ + if (e->npm) BitstreamSkip(bs, 8); /* */ + if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ + if (e->halfpel2) BitstreamSkip(bs, 8); /* */ + if (e->halfpel4) BitstreamSkip(bs, 8); /* */ + if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ + } + } +} + + + + + /* decode headers returns coding_type, or -1 if error @@ -173,19 +427,22 @@ BitstreamReadHeaders(Bitstream * bs, DECODER * dec, uint32_t * rounding, + uint32_t * reduced_resolution, uint32_t * quant, uint32_t * fcode_forward, uint32_t * fcode_backward, - uint32_t * intra_dc_threshold) + uint32_t * intra_dc_threshold, + WARPPOINTS *gmc_warp) { uint32_t vol_ver_id; - static uint32_t time_increment_resolution; uint32_t coding_type; uint32_t start_code; uint32_t time_incr = 0; - int32_t time_increment = 0; + int32_t time_increment; + int resize = 0; do { + BitstreamByteAlign(bs); start_code = BitstreamShowBits(bs, 32); @@ -195,51 +452,52 @@ DPRINTF(DPRINTF_STARTCODE, ""); - BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */ - profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */ + BitstreamSkip(bs, 32); // visual_object_sequence_start_code + profile = BitstreamGetBits(bs, 8); // profile_and_level_indication DPRINTF(DPRINTF_HEADER, "profile_and_level_indication %i", profile); } else if (start_code == VISOBJSEQ_STOP_CODE) { - BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */ + BitstreamSkip(bs, 32); // visual_object_sequence_stop_code DPRINTF(DPRINTF_STARTCODE, ""); } else if (start_code == VISOBJ_START_CODE) { + int visobj_ver_id; DPRINTF(DPRINTF_STARTCODE, ""); - BitstreamSkip(bs, 32); /* visual_object_start_code */ - if (BitstreamGetBit(bs)) /* is_visual_object_identified */ + BitstreamSkip(bs, 32); // visual_object_start_code + if (BitstreamGetBit(bs)) // is_visual_object_identified { - vol_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ - DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); - BitstreamSkip(bs, 3); /* visual_object_priority */ + visobj_ver_id = BitstreamGetBits(bs, 4); // visual_object_ver_id + DPRINTF(DPRINTF_HEADER,"visobj_ver_id %i", visobj_ver_id); + BitstreamSkip(bs, 3); // visual_object_priority } else { - vol_ver_id = 1; + visobj_ver_id = 1; } - if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ + if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type { DPRINTF(DPRINTF_ERROR, "visual_object_type != video"); return -1; } BitstreamSkip(bs, 4); - /* video_signal_type */ + // video_signal_type - if (BitstreamGetBit(bs)) /* video_signal_type */ + if (BitstreamGetBit(bs)) // video_signal_type { DPRINTF(DPRINTF_HEADER,"+ video_signal_type"); - BitstreamSkip(bs, 3); /* video_format */ - BitstreamSkip(bs, 1); /* video_range */ - if (BitstreamGetBit(bs)) /* color_description */ + BitstreamSkip(bs, 3); // video_format + BitstreamSkip(bs, 1); // video_range + if (BitstreamGetBit(bs)) // color_description { DPRINTF(DPRINTF_HEADER,"+ color_description"); - BitstreamSkip(bs, 8); /* color_primaries */ - BitstreamSkip(bs, 8); /* transfer_characteristics */ - BitstreamSkip(bs, 8); /* matrix_coefficients */ + BitstreamSkip(bs, 8); // color_primaries + BitstreamSkip(bs, 8); // transfer_characteristics + BitstreamSkip(bs, 8); // matrix_coefficients } } } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { @@ -247,19 +505,24 @@ DPRINTF(DPRINTF_STARTCODE, ""); DPRINTF(DPRINTF_HEADER, "vo id %i", start_code & VIDOBJ_START_CODE_MASK); - BitstreamSkip(bs, 32); /* video_object_start_code */ + BitstreamSkip(bs, 32); // video_object_start_code } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { DPRINTF(DPRINTF_STARTCODE, ""); DPRINTF(DPRINTF_HEADER, "vol id %i", start_code & VIDOBJLAY_START_CODE_MASK); - BitstreamSkip(bs, 32); /* video_object_layer_start_code */ + BitstreamSkip(bs, 32); // video_object_layer_start_code - BitstreamSkip(bs, 1); /* random_accessible_vol */ + BitstreamSkip(bs, 1); // random_accessible_vol - /* video_object_type_indication */ - if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && BitstreamShowBits(bs, 8) != 0) /* BUGGY DIVX */ + // video_object_type_indication + if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && + BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && + BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && + BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_ACE && + BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_ART_SIMPLE && + BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX { DPRINTF(DPRINTF_ERROR,"video_object_type_indication %i not supported ", BitstreamShowBits(bs, 8)); @@ -268,77 +531,95 @@ BitstreamSkip(bs, 8); - if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ + if (BitstreamGetBit(bs)) // is_object_layer_identifier { DPRINTF(DPRINTF_HEADER, "+ is_object_layer_identifier"); - vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */ + vol_ver_id = BitstreamGetBits(bs, 4); // video_object_layer_verid DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); - BitstreamSkip(bs, 3); /* video_object_layer_priority */ + BitstreamSkip(bs, 3); // video_object_layer_priority } else { vol_ver_id = 1; } - if (BitstreamGetBits(bs, 4) == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ + dec->aspect_ratio = BitstreamGetBits(bs, 4); + + if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info { DPRINTF(DPRINTF_HEADER, "+ aspect_ratio_info"); - BitstreamSkip(bs, 8); /* par_width */ - BitstreamSkip(bs, 8); /* par_height */ + dec->par_width = BitstreamGetBits(bs, 8); // par_width + dec->par_height = BitstreamGetBits(bs, 8); // par_height } - if (BitstreamGetBit(bs)) /* vol_control_parameters */ + if (BitstreamGetBit(bs)) // vol_control_parameters { DPRINTF(DPRINTF_HEADER, "+ vol_control_parameters"); - BitstreamSkip(bs, 2); /* chroma_format */ - dec->low_delay = (uint8_t)BitstreamGetBit(bs); /* low_delay */ + BitstreamSkip(bs, 2); // chroma_format + dec->low_delay = BitstreamGetBit(bs); // low_delay DPRINTF(DPRINTF_HEADER, "low_delay %i", dec->low_delay); - if (BitstreamGetBit(bs)) /* vbv_parameters */ + if (BitstreamGetBit(bs)) // vbv_parameters { + unsigned int bitrate; + unsigned int buffer_size; + unsigned int occupancy; + DPRINTF(DPRINTF_HEADER,"+ vbv_parameters"); - BitstreamSkip(bs, 15); /* first_half_bitrate */ + + bitrate = BitstreamGetBits(bs,15) << 15; // first_half_bit_rate READ_MARKER(); - BitstreamSkip(bs, 15); /* latter_half_bitrate */ + bitrate |= BitstreamGetBits(bs,15); // latter_half_bit_rate READ_MARKER(); - BitstreamSkip(bs, 15); /* first_half_vbv_buffer_size */ + + buffer_size = BitstreamGetBits(bs, 15) << 3; // first_half_vbv_buffer_size READ_MARKER(); - BitstreamSkip(bs, 3); /* latter_half_vbv_buffer_size */ - BitstreamSkip(bs, 11); /* first_half_vbv_occupancy */ + buffer_size |= BitstreamGetBits(bs, 3); // latter_half_vbv_buffer_size + + occupancy = BitstreamGetBits(bs, 11) << 15; // first_half_vbv_occupancy READ_MARKER(); - BitstreamSkip(bs, 15); /* latter_half_vbv_occupancy */ + occupancy |= BitstreamGetBits(bs, 15); // latter_half_vbv_occupancy READ_MARKER(); + DPRINTF(DPRINTF_HEADER,"bitrate %d (unit=400 bps)", bitrate); + DPRINTF(DPRINTF_HEADER,"buffer_size %d (unit=16384 bits)", buffer_size); + DPRINTF(DPRINTF_HEADER,"occupancy %d (unit=64 bits)", occupancy); } + }else{ + dec->low_delay = dec->low_delay_default; } - dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ + dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape + DPRINTF(DPRINTF_HEADER, "shape %i", dec->shape); + if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) + { + DPRINTF(DPRINTF_ERROR,"non-rectangular shapes are not supported"); + } if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { - BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ + BitstreamSkip(bs, 4); // video_object_layer_shape_extension } READ_MARKER(); -/* *************************** for decode B-frame time *********************** */ - time_increment_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ - - DPRINTF(DPRINTF_HEADER,"vop_time_increment_resolution %i", time_increment_resolution); +// *************************** for decode B-frame time *********************** + dec->time_inc_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution + DPRINTF(DPRINTF_HEADER,"vop_time_increment_resolution %i", dec->time_inc_resolution); -/* time_increment_resolution--; */ +// dec->time_inc_resolution--; - if (time_increment_resolution > 0) { - dec->time_inc_bits = log2bin(time_increment_resolution-1); + if (dec->time_inc_resolution > 0) { + dec->time_inc_bits = log2bin(dec->time_inc_resolution-1); } else { - /* dec->time_inc_bits = 0; */ - /* for "old" xvid compatibility, set time_inc_bits = 1 */ + // dec->time_inc_bits = 0; + // for "old" xvid compatibility, set time_inc_bits = 1 dec->time_inc_bits = 1; } READ_MARKER(); - if (BitstreamGetBit(bs)) /* fixed_vop_rate */ + if (BitstreamGetBit(bs)) // fixed_vop_rate { DPRINTF(DPRINTF_HEADER, "+ fixed_vop_rate"); - BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ + BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment } if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { @@ -347,68 +628,92 @@ uint32_t width, height; READ_MARKER(); - width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ + width = BitstreamGetBits(bs, 13); // video_object_layer_width READ_MARKER(); - height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ + height = BitstreamGetBits(bs, 13); // video_object_layer_height READ_MARKER(); DPRINTF(DPRINTF_HEADER, "width %i", width); DPRINTF(DPRINTF_HEADER, "height %i", height); - /* for auto set width & height */ - if (dec->width == 0) + if (dec->width != width || dec->height != height) + { + if (dec->fixed_dimensions) + { + DPRINTF(DPRINTF_ERROR, "XVID_DEC_PARAM width/height does not match bitstream"); + return -1; + } + resize = 1; dec->width = width; - if (dec->height == 0) dec->height = height; - - if (width != dec->width || height != dec->height) { - DPRINTF(DPRINTF_ERROR, "XVID_DEC_PARAM width/height does not match bitstream"); - return -1; } - } dec->interlacing = BitstreamGetBit(bs); - DPRINTF(DPRINTF_HEADER, "interlace", dec->interlacing); + DPRINTF(DPRINTF_HEADER, "interlacing %i", dec->interlacing); - if (!BitstreamGetBit(bs)) /* obmc_disable */ + if (!BitstreamGetBit(bs)) // obmc_disable { DPRINTF(DPRINTF_ERROR, "obmc_disabled==false not supported"); - /* TODO */ - /* fucking divx4.02 has this enabled */ + // TODO + // fucking divx4.02 has this enabled } - if (BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2))) /* sprite_enable */ + dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); // sprite_enable + + if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) { - DPRINTF(DPRINTF_ERROR, "spriate_enabled not supported"); - return -1; + int low_latency_sprite_enable; + + if (dec->sprite_enable != SPRITE_GMC) + { + int sprite_width; + int sprite_height; + int sprite_left_coord; + int sprite_top_coord; + sprite_width = BitstreamGetBits(bs, 13); // sprite_width + READ_MARKER(); + sprite_height = BitstreamGetBits(bs, 13); // sprite_height + READ_MARKER(); + sprite_left_coord = BitstreamGetBits(bs, 13); // sprite_left_coordinate + READ_MARKER(); + sprite_top_coord = BitstreamGetBits(bs, 13); // sprite_top_coordinate + READ_MARKER(); + } + dec->sprite_warping_points = BitstreamGetBits(bs, 6); // no_of_sprite_warping_points + dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); // sprite_warping_accuracy + dec->sprite_brightness_change = BitstreamGetBits(bs, 1); // brightness_change + if (dec->sprite_enable != SPRITE_GMC) + { + low_latency_sprite_enable = BitstreamGetBits(bs, 1); // low_latency_sprite_enable + } } if (vol_ver_id != 1 && dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { - BitstreamSkip(bs, 1); /* sadct_disable */ + BitstreamSkip(bs, 1); // sadct_disable } - if (BitstreamGetBit(bs)) /* not_8_bit */ + if (BitstreamGetBit(bs)) // not_8_bit { DPRINTF(DPRINTF_HEADER, "not_8_bit==true (ignored)"); - dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */ - BitstreamSkip(bs, 4); /* bits_per_pixel */ + dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision + BitstreamSkip(bs, 4); // bits_per_pixel } else { dec->quant_bits = 5; } if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { - BitstreamSkip(bs, 1); /* no_gray_quant_update */ - BitstreamSkip(bs, 1); /* composition_method */ - BitstreamSkip(bs, 1); /* linear_composition */ + BitstreamSkip(bs, 1); // no_gray_quant_update + BitstreamSkip(bs, 1); // composition_method + BitstreamSkip(bs, 1); // linear_composition } - dec->quant_type = BitstreamGetBit(bs); /* quant_type */ + dec->quant_type = BitstreamGetBit(bs); // quant_type DPRINTF(DPRINTF_HEADER, "quant_type %i", dec->quant_type); if (dec->quant_type) { - if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ + if (BitstreamGetBit(bs)) // load_intra_quant_mat { uint8_t matrix[64]; @@ -419,7 +724,7 @@ } else set_intra_matrix(get_default_intra_matrix()); - if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ + if (BitstreamGetBit(bs)) // load_inter_quant_mat { uint8_t matrix[64]; @@ -439,59 +744,87 @@ if (vol_ver_id != 1) { - DPRINTF(DPRINTF_DEBUG, "QUARTERPEL BITSTREAM"); - dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ + dec->quarterpel = BitstreamGetBit(bs); // quarter_sample + DPRINTF(DPRINTF_HEADER,"quarterpel %i", dec->quarterpel); } else dec->quarterpel = 0; - if (!BitstreamGetBit(bs)) /* complexity_estimation_disable */ + dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */ + if (!dec->complexity_estimation_disable) { - DPRINTF(DPRINTF_ERROR, "complexity_estimation not supported"); - return -1; + read_vol_complexity_estimation_header(bs, dec); } - BitstreamSkip(bs, 1); /* resync_marker_disable */ + BitstreamSkip(bs, 1); // resync_marker_disable - if (BitstreamGetBit(bs)) /* data_partitioned */ + if (BitstreamGetBit(bs)) // data_partitioned { DPRINTF(DPRINTF_ERROR, "data_partitioned not supported"); - BitstreamSkip(bs, 1); /* reversible_vlc */ + BitstreamSkip(bs, 1); // reversible_vlc } if (vol_ver_id != 1) { - if (BitstreamGetBit(bs)) /* newpred_enable */ + dec->newpred_enable = BitstreamGetBit(bs); + if (dec->newpred_enable) // newpred_enable { DPRINTF(DPRINTF_HEADER, "+ newpred_enable"); - BitstreamSkip(bs, 2); /* requested_upstream_message_type */ - BitstreamSkip(bs, 1); /* newpred_segment_type */ - } - if (BitstreamGetBit(bs)) /* reduced_resolution_vop_enable */ - { - DPRINTF(DPRINTF_ERROR, "reduced_resolution_vop not supported"); - return -1; + BitstreamSkip(bs, 2); // requested_upstream_message_type + BitstreamSkip(bs, 1); // newpred_segment_type } + dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */ + DPRINTF(DPRINTF_HEADER, "reduced_resolution_enable %i", dec->reduced_resolution_enable); + } + else + { + dec->newpred_enable = 0; + dec->reduced_resolution_enable = 0; } - if ((dec->scalability = (int8_t)BitstreamGetBit(bs))) /* scalability */ + dec->scalability = BitstreamGetBit(bs); /* scalability */ + if (dec->scalability) { DPRINTF(DPRINTF_ERROR, "scalability not supported"); + BitstreamSkip(bs, 1); /* hierarchy_type */ + BitstreamSkip(bs, 4); /* ref_layer_id */ + BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */ + BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ + BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ + BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ + BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ + BitstreamSkip(bs, 1); /* enhancement_type */ + if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) { + BitstreamSkip(bs, 1); /* use_ref_shape */ + BitstreamSkip(bs, 1); /* use_ref_texture */ + BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */ + BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */ + BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */ + BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */ + } return -1; } - } else /* dec->shape == BINARY_ONLY */ + } else // dec->shape == BINARY_ONLY { if (vol_ver_id != 1) { - if (BitstreamGetBit(bs)) /* scalability */ + dec->scalability = BitstreamGetBit(bs); /* scalability */ + if (dec->scalability) { - DPRINTF(DPRINTF_ERROR, "scalability not supported"); + DPRINTF(DPRINTF_ERROR, "scalability not supported"); + BitstreamSkip(bs, 4); /* ref_layer_id */ + BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ + BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ + BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ + BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ return -1; } } - BitstreamSkip(bs, 1); /* resync_marker_disable */ + BitstreamSkip(bs, 1); // resync_marker_disable } + return (resize ? -3 : -2 ); /* VOL */ + } else if (start_code == GRPOFVOP_START_CODE) { DPRINTF(DPRINTF_STARTCODE, ""); @@ -505,35 +838,35 @@ READ_MARKER(); seconds = BitstreamGetBits(bs, 6); - DPRINTF(DPRINTF_HEADER, "time %ih%im%is", hours); + DPRINTF(DPRINTF_HEADER, "time %ih%im%is", hours,minutes,seconds); } - BitstreamSkip(bs, 1); /* closed_gov */ - BitstreamSkip(bs, 1); /* broken_link */ + BitstreamSkip(bs, 1); // closed_gov + BitstreamSkip(bs, 1); // broken_link } else if (start_code == VOP_START_CODE) { DPRINTF(DPRINTF_STARTCODE, ""); - BitstreamSkip(bs, 32); /* vop_start_code */ + BitstreamSkip(bs, 32); // vop_start_code - coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */ + coding_type = BitstreamGetBits(bs, 2); // vop_coding_type DPRINTF(DPRINTF_HEADER, "coding_type %i", coding_type); -/* *************************** for decode B-frame time *********************** */ - while (BitstreamGetBit(bs) != 0) /* time_base */ +// *************************** for decode B-frame time *********************** + while (BitstreamGetBit(bs) != 0) // time_base time_incr++; READ_MARKER(); if (dec->time_inc_bits) { - time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ + time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment } DPRINTF(DPRINTF_HEADER, "time_base %i", time_incr); DPRINTF(DPRINTF_HEADER, "time_increment %i", time_increment); DPRINTF(DPRINTF_TIMECODE, "%c %i:%i", - coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : 'B', + coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', time_incr, time_increment); if (coding_type != B_VOP) { @@ -541,77 +874,109 @@ dec->time_base += time_incr; dec->time = time_increment; -/* dec->time_base * time_increment_resolution + +/* dec->time_base * dec->time_inc_resolution + time_increment; */ dec->time_pp = (uint32_t) - (time_increment_resolution + dec->time - dec->last_non_b_time)%time_increment_resolution; + (dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution; dec->last_non_b_time = dec->time; } else { dec->time = time_increment; /* (dec->last_time_base + - time_incr) * time_increment_resolution + time_increment; + time_incr) * dec->time_inc_resolution + time_increment; */ dec->time_bp = (uint32_t) - (time_increment_resolution + dec->last_non_b_time - dec->time)%time_increment_resolution; + (dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution; } + DPRINTF(DPRINTF_HEADER,"time_pp=%i", dec->time_pp); + DPRINTF(DPRINTF_HEADER,"time_bp=%i", dec->time_bp); READ_MARKER(); - if (!BitstreamGetBit(bs)) /* vop_coded */ + if (!BitstreamGetBit(bs)) // vop_coded { DPRINTF(DPRINTF_HEADER, "vop_coded==false"); return N_VOP; } - /* if (newpred_enable) - { - } - */ + if (dec->newpred_enable) + { + int vop_id; + int vop_id_for_prediction; + + vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); + DPRINTF(DPRINTF_HEADER, "vop_id %i", vop_id); + if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ + { + vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); + DPRINTF(DPRINTF_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction); + } + READ_MARKER(); + } + + - /* fix a little bug by MinChen */ + // fix a little bug by MinChen if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && - (coding_type == P_VOP)) { - *rounding = BitstreamGetBit(bs); /* rounding_type */ + ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { + *rounding = BitstreamGetBit(bs); // rounding_type DPRINTF(DPRINTF_HEADER, "rounding %i", *rounding); } - /* if (reduced_resolution_enable) - { - } - */ + if (dec->reduced_resolution_enable && + dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && + (coding_type == P_VOP || coding_type == I_VOP)) { + + *reduced_resolution = BitstreamGetBit(bs); + DPRINTF(DPRINTF_HEADER, "reduced_resolution %i", *reduced_resolution); + } + else + { + *reduced_resolution = 0; + } if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { - uint32_t width, height; - uint32_t horiz_mc_ref, vert_mc_ref; + if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { - width = BitstreamGetBits(bs, 13); - READ_MARKER(); - height = BitstreamGetBits(bs, 13); - READ_MARKER(); - horiz_mc_ref = BitstreamGetBits(bs, 13); - READ_MARKER(); - vert_mc_ref = BitstreamGetBits(bs, 13); - READ_MARKER(); + uint32_t width, height; + uint32_t horiz_mc_ref, vert_mc_ref; - DPRINTF(DPRINTF_HEADER, "width %i", width); - DPRINTF(DPRINTF_HEADER, "height %i", height); - DPRINTF(DPRINTF_HEADER, "horiz_mc_ref %i", horiz_mc_ref); - DPRINTF(DPRINTF_HEADER, "vert_mc_ref %i", vert_mc_ref); + width = BitstreamGetBits(bs, 13); + READ_MARKER(); + height = BitstreamGetBits(bs, 13); + READ_MARKER(); + horiz_mc_ref = BitstreamGetBits(bs, 13); + READ_MARKER(); + vert_mc_ref = BitstreamGetBits(bs, 13); + READ_MARKER(); - BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ - if (BitstreamGetBit(bs)) /* vop_constant_alpha */ + DPRINTF(DPRINTF_HEADER, "width %i", width); + DPRINTF(DPRINTF_HEADER, "height %i", height); + DPRINTF(DPRINTF_HEADER, "horiz_mc_ref %i", horiz_mc_ref); + DPRINTF(DPRINTF_HEADER, "vert_mc_ref %i", vert_mc_ref); + } + + BitstreamSkip(bs, 1); // change_conv_ratio_disable + if (BitstreamGetBit(bs)) // vop_constant_alpha { - BitstreamSkip(bs, 8); /* vop_constant_alpha_value */ + BitstreamSkip(bs, 8); // vop_constant_alpha_value } } - if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { - /* intra_dc_vlc_threshold */ + + if (!dec->complexity_estimation_disable) + { + read_vop_complexity_estimation_header(bs, dec, coding_type); + } + + // intra_dc_vlc_threshold *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; + dec->top_field_first = 0; + dec->alternate_vertical_scan = 0; + if (dec->interlacing) { dec->top_field_first = BitstreamGetBit(bs); DPRINTF(DPRINTF_HEADER, "interlace top_field_first %i", dec->top_field_first); @@ -621,35 +986,103 @@ } } - if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */ - *quant = 1; + if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { + + int i; + + for (i = 0 ; i < dec->sprite_warping_points; i++) + { + int length; + int x = 0, y = 0; + + /* sprite code borowed from ffmpeg; thx Michael Niedermayer */ + length = bs_get_spritetrajectory(bs); + if(length){ + x= BitstreamGetBits(bs, length); + if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ + x = - (x ^ ((1 << length) - 1)); + } + READ_MARKER(); + + length = bs_get_spritetrajectory(bs); + if(length){ + y = BitstreamGetBits(bs, length); + if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ + y = - (y ^ ((1 << length) - 1)); + } + READ_MARKER(); + + gmc_warp->duv[i].x = x; + gmc_warp->duv[i].y = y; + + DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", i, x, y); + } + + if (dec->sprite_brightness_change) + { + // XXX: brightness_change_factor() + } + if (dec->sprite_enable == SPRITE_STATIC) + { + // XXX: todo + } + + } + if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) // vop_quant + *quant = 1; DPRINTF(DPRINTF_HEADER, "quant %i", *quant); if (coding_type != I_VOP) { - *fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */ + *fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward DPRINTF(DPRINTF_HEADER, "fcode_forward %i", *fcode_forward); } if (coding_type == B_VOP) { - *fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */ + *fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward DPRINTF(DPRINTF_HEADER, "fcode_backward %i", *fcode_backward); } if (!dec->scalability) { if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && (coding_type != I_VOP)) { - BitstreamSkip(bs, 1); /* vop_shape_coding_type */ + BitstreamSkip(bs, 1); // vop_shape_coding_type } } return coding_type; } else if (start_code == USERDATA_START_CODE) { + char tmp[256]; + int i, version, build; + char packed; + + BitstreamSkip(bs, 32); // user_data_start_code + + tmp[0] = BitstreamShowBits(bs, 8); + + for(i = 1; i < 256; i++){ + tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); + + if(tmp[i] == 0) + break; + + BitstreamSkip(bs, 8); + } - DPRINTF(DPRINTF_STARTCODE, ""); + DPRINTF(DPRINTF_STARTCODE, ": %s\n", tmp); - BitstreamSkip(bs, 32); /* user_data_start_code */ + /* divx detection */ + i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); + if (i < 2) + i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed); + + if (i >= 2) + { + dec->packed_mode = (i == 3 && packed == 'p'); + DPRINTF(DPRINTF_HEADER, "divx version=%i, build=%i packed=%i", + version, build, dec->packed_mode); + } - } else /* start_code == ? */ + } else // start_code == ? { if (BitstreamShowBits(bs, 24) == 0x000001) { DPRINTF(DPRINTF_STARTCODE, "", BitstreamShowBits(bs, 32)); @@ -659,7 +1092,7 @@ } while ((BitstreamPos(bs) >> 3) < bs->length); - /*DPRINTF("*** WARNING: no vop_start_code found"); */ + //DPRINTF("*** WARNING: no vop_start_code found"); return -1; /* ignore it */ } @@ -691,103 +1124,185 @@ void BitstreamWriteVolHeader(Bitstream * const bs, const MBParam * pParam, - const FRAMEINFO * frame) + const FRAMEINFO * const frame) { - /* video object_start_code & vo_id */ + static const unsigned int vo_id = 0; + static const unsigned int vol_id = 0; + int vol_ver_id=1; + int profile = 0x03; /* simple profile/level 3 */ + + if ( pParam->m_quarterpel || (frame->global_flags & XVID_GMC) || + (pParam->global & XVID_GLOBAL_REDUCED)) + vol_ver_id = 2; + + if ((pParam->global & XVID_GLOBAL_REDUCED)) + profile = 0x93; /* advanced realtime simple profile/level 3 */ + + if (pParam->m_quarterpel || (frame->global_flags & XVID_GMC)) + profile = 0xf3; /* advanced simple profile/level 2 */ + + // visual_object_sequence_start_code +// BitstreamPad(bs); +/* no padding here, anymore. You have to make sure that you are + byte aligned, and that always 1-8 padding bits have been written */ + + BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); + BitstreamPutBits(bs, profile, 8); + + // visual_object_start_code + BitstreamPad(bs); + BitstreamPutBits(bs, VISOBJ_START_CODE, 32); + BitstreamPutBits(bs, 0, 1); // is_visual_object_identifier + BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); // visual_object_type + + // video object_start_code & vo_id BitstreamPad(bs); - BitstreamPutBits(bs, VO_START_CODE, 27); - BitstreamPutBits(bs, 0, 5); + BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); - /* video_object_layer_start_code & vol_id */ - BitstreamPutBits(bs, VOL_START_CODE, 28); - BitstreamPutBits(bs, 0, 4); + // video_object_layer_start_code & vol_id + BitstreamPad(bs); + BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32); - BitstreamPutBit(bs, 0); /* random_accessible_vol */ - BitstreamPutBits(bs, 0, 8); /* video_object_type_indication */ - BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ - BitstreamPutBits(bs, 1, 4); /* aspect_ratio_info (1=1:1) */ + BitstreamPutBit(bs, 0); // random_accessible_vol + BitstreamPutBits(bs, 0, 8); // video_object_type_indication - BitstreamPutBit(bs, 1); /* vol_control_parameters */ - BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ + if (vol_ver_id == 1) + { + BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given) + } + else + { + BitstreamPutBit(bs, 1); // is_object_layer_identified + BitstreamPutBits(bs, vol_ver_id, 4); // vol_ver_id == 2 + BitstreamPutBits(bs, 4, 3); // vol_ver_priority (1==lowest, 7==highest) ?? + } - BitstreamPutBit(bs, 1); /* low_delay */ + BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) - BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */ + BitstreamPutBit(bs, 1); // vol_control_parameters + BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0" - BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */ + if (pParam->max_bframes > 0) { + BitstreamPutBit(bs, 0); // low_delay + } else + { + BitstreamPutBit(bs, 1); // low_delay + } + BitstreamPutBit(bs, 0); // vbv_parameters (0=not given) + + BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) WRITE_MARKER(); - /* - * time_increment_resolution; ignored by current decore versions - * eg. 2fps res=2 inc=1 - * 25fps res=25 inc=1 - * 29.97fps res=30000 inc=1001 + /* time_inc_resolution; ignored by current decore versions + eg. 2fps res=2 inc=1 + 25fps res=25 inc=1 + 29.97fps res=30000 inc=1001 */ BitstreamPutBits(bs, pParam->fbase, 16); - WRITE_MARKER(); - BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ - BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); /* fixed_vop_time_increment */ + BitstreamPutBit(bs, 1); // fixed_vop_rate = 1 + BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); // fixed_vop_time_increment WRITE_MARKER(); - BitstreamPutBits(bs, pParam->width, 13); /* width */ + BitstreamPutBits(bs, pParam->width, 13); // width WRITE_MARKER(); - BitstreamPutBits(bs, pParam->height, 13); /* height */ + BitstreamPutBits(bs, pParam->height, 13); // height WRITE_MARKER(); - BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); /* interlace */ - BitstreamPutBit(bs, 1); /* obmc_disable (overlapped block motion compensation) */ - BitstreamPutBit(bs, 0); /* sprite_enable */ - BitstreamPutBit(bs, 0); /* not_in_bit */ + BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace + BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) + + if (vol_ver_id != 1) + { if (frame->global_flags & XVID_GMC) + { BitstreamPutBits(bs, 2, 2); // sprite_enable=='GMC' + BitstreamPutBits(bs, 2, 6); // no_of_sprite_warping_points + BitstreamPutBits(bs, 3, 2); // sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 + BitstreamPutBit(bs, 0); // sprite_brightness_change (not supported) + +/* currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 + for DivX5 compatability */ + + } else + BitstreamPutBits(bs, 0, 2); // sprite_enable==off + } + else + BitstreamPutBit(bs, 0); // sprite_enable==off + + BitstreamPutBit(bs, 0); // not_8_bit - /* quant_type 0=h.263 1=mpeg4(quantizer tables) */ + // quant_type 0=h.263 1=mpeg4(quantizer tables) BitstreamPutBit(bs, pParam->m_quant_type); if (pParam->m_quant_type) { - BitstreamPutBit(bs, get_intra_matrix_status()); /* load_intra_quant_mat */ + BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat if (get_intra_matrix_status()) { bs_put_matrix(bs, get_intra_matrix()); } - BitstreamPutBit(bs, get_inter_matrix_status()); /* load_inter_quant_mat */ + BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat if (get_inter_matrix_status()) { bs_put_matrix(bs, get_inter_matrix()); } } - BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ - BitstreamPutBit(bs, 1); /* resync_marker_disable */ - BitstreamPutBit(bs, 0); /* data_partitioned */ - BitstreamPutBit(bs, 0); /* scalability */ + if (vol_ver_id != 1) { + if (pParam->m_quarterpel) + BitstreamPutBit(bs, 1); // quarterpel + else + BitstreamPutBit(bs, 0); // no quarterpel + } + + BitstreamPutBit(bs, 1); // complexity_estimation_disable + BitstreamPutBit(bs, 1); // resync_marker_disable + BitstreamPutBit(bs, 0); // data_partitioned + + if (vol_ver_id != 1) + { + BitstreamPutBit(bs, 0); // newpred_enable + + BitstreamPutBit(bs, (pParam->global & XVID_GLOBAL_REDUCED)?1:0); + /* reduced_resolution_vop_enabled */ + } + + BitstreamPutBit(bs, 0); // scalability + + /* fake divx5 id, to ensure compatibility with divx5 decoder */ +#define DIVX5_ID "DivX501b481p" + if (pParam->max_bframes > 0 && (pParam->global & XVID_GLOBAL_PACKED)) { + BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); + } + + /* xvid id */ +#define XVID_ID "XviD" XVID_BS_VERSION + BitstreamWriteUserData(bs, XVID_ID, strlen(XVID_ID)); } /* write vop header - - NOTE: doesnt handle bother with time_base & time_inc - time_base = n seconds since last resync (eg. last iframe) - time_inc = nth of a second since last resync - (decoder uses these values to determine precise time since last resync) */ void -BitstreamWriteVopHeader(Bitstream * const bs, +BitstreamWriteVopHeader( + Bitstream * const bs, const MBParam * pParam, - const FRAMEINFO * frame, + const FRAMEINFO * const frame, int vop_coded) { uint32_t i; - BitstreamPad(bs); +// BitstreamPad(bs); +/* no padding here, anymore. You have to make sure that you are + byte aligned, and that always 1-8 padding bits have been written */ + BitstreamPutBits(bs, VOP_START_CODE, 32); BitstreamPutBits(bs, frame->coding_type, 2); + DPRINTF(DPRINTF_HEADER, "coding_type = %i", frame->coding_type); - /* time_base = 0 write n x PutBit(1), PutBit(0) */ for (i = 0; i < frame->seconds; i++) { BitstreamPutBit(bs, 1); } @@ -795,8 +1310,12 @@ WRITE_MARKER(); - /* time_increment: value=nth_of_sec, nbits = log2(resolution) */ + // time_increment: value=nth_of_sec, nbits = log2(resolution) + BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); + /*DPRINTF("[%i:%i] %c", frame->seconds, frame->ticks, + frame->coding_type == I_VOP ? 'I' : frame->coding_type == + P_VOP ? 'P' : 'B');*/ WRITE_MARKER(); @@ -805,24 +1324,69 @@ return; } - BitstreamPutBits(bs, 1, 1); /* vop_coded */ + BitstreamPutBits(bs, 1, 1); // vop_coded - if (frame->coding_type == P_VOP) + if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) BitstreamPutBits(bs, frame->rounding_type, 1); - BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ + if ((pParam->global & XVID_GLOBAL_REDUCED)) + BitstreamPutBit(bs, (frame->global_flags & XVID_REDUCED)?1:0); + + BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold if (frame->global_flags & XVID_INTERLACING) { - BitstreamPutBit(bs, 1); /* top field first */ - BitstreamPutBit(bs, 0); /* alternate vertical scan */ + BitstreamPutBit(bs, (frame->global_flags & XVID_TOPFIELDFIRST)); + BitstreamPutBit(bs, (frame->global_flags & XVID_ALTERNATESCAN)); + } + + if (frame->coding_type == S_VOP) { + if (1) { // no_of_sprite_warping_points>=1 (we use 2!) + int k; + for (k=0;k<2;k++) + { + bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); // du[k] + WRITE_MARKER(); + + bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); // dv[k] + WRITE_MARKER(); + + if (pParam->m_quarterpel) + { + DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i) *QPEL*", k, frame->warp.duv[k].x/2, frame->warp.duv[k].y/2); + } + else + { + DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", k, frame->warp.duv[k].x, frame->warp.duv[k].y); + } + } + } } + - BitstreamPutBits(bs, frame->quant, 5); /* quantizer */ + DPRINTF(DPRINTF_HEADER, "quant = %i", frame->quant); + + BitstreamPutBits(bs, frame->quant, 5); // quantizer if (frame->coding_type != I_VOP) - BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ + BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code if (frame->coding_type == B_VOP) - BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ + BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code + +} + +void +BitstreamWriteUserData(Bitstream * const bs, + uint8_t * data, + const int length) +{ + int i; + + BitstreamPad(bs); + BitstreamPutBits(bs, USERDATA_START_CODE, 32); + + for (i = 0; i < length; i++) { + BitstreamPutBits(bs, data[i], 8); + } }