--- trunk/xvidcore/src/bitstream/bitstream.c 2002/03/09 21:44:47 20 +++ trunk/xvidcore/src/bitstream/bitstream.c 2002/11/26 23:44:11 677 @@ -1,74 +1,90 @@ - /****************************************************************************** - * * - * 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: * - * * - * 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 * - * * - ******************************************************************************/ - +/***************************************************************************** + * + * 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 1.36 2002-11-26 23:44:10 edgomez Exp $ + * + ****************************************************************************/ #include "bitstream.h" #include "zigzag.h" #include "../quant/quant_matrix.h" -static int __inline log2bin(int value) +/***************************************************************************** + * Functions + ****************************************************************************/ + +static uint32_t __inline +log2bin(uint32_t value) { +/* Changed by Chenm001 */ +#if !defined(_MSC_VER) int n = 0; - while (value) - { + + while (value) { value >>= 1; n++; } return n; +#else + __asm { + bsr eax, value + inc eax + } +#endif } -static const uint32_t intra_dc_threshold_table[] = -{ - 32, /* never use */ +static const uint32_t intra_dc_threshold_table[] = { + 32, /* never use */ 13, 15, 17, @@ -79,419 +95,496 @@ }; -void bs_get_matrix(Bitstream * bs, uint8_t * matrix) -{ - int i = 0; - int last, value = 0; - - do - { - last = value; - value = BitstreamGetBits(bs, 8); - matrix[ scan_tables[0][i++] ] = value; - } - while (value != 0 && i < 64); - - while (i < 64) - { - matrix[ scan_tables[0][i++] ] = last; - } -} +void +bs_get_matrix(Bitstream * bs, + uint8_t * matrix) +{ + int i = 0; + int last, value = 0; + + do { + last = value; + value = BitstreamGetBits(bs, 8); + matrix[scan_tables[0][i++]] = value; + } + while (value != 0 && i < 64); + i--; /* fix little bug at coeff not full */ + + while (i < 64) { + matrix[scan_tables[0][i++]] = last; + } +} + + + +/* 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) +{ + int nbits; + int mbnum; + int hec; + + nbits = NUMBITS_VP_RESYNC_MARKER + addbits; + + BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); + BitstreamSkip(bs, nbits); + + DPRINTF(DPRINTF_STARTCODE, ""); + + /* if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { */ + /* hec */ + /* vop_width */ + /* marker_bit */ + /* vop_height */ + /* marker_bit */ + + /*} */ + + mbnum = BitstreamGetBits(bs, 9); + 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_RECTANGULAR) */ + hec = BitstreamGetBit(bs); + DPRINTF(DPRINTF_HEADER, "header_extension_code %i", hec); + /* if (hec) */ + /* .. decoder hec-header ... */ + + return mbnum; +} + + /* decode headers returns coding_type, or -1 if error */ -int BitstreamReadHeaders(Bitstream * bs, DECODER * dec, uint32_t * rounding, uint32_t * quant, uint32_t * fcode, uint32_t * intra_dc_threshold) +#define VIDOBJ_START_CODE_MASK 0x0000001f +#define VIDOBJLAY_START_CODE_MASK 0x0000000f + +int +BitstreamReadHeaders(Bitstream * bs, + DECODER * dec, + uint32_t * rounding, + uint32_t * quant, + uint32_t * fcode_forward, + uint32_t * fcode_backward, + uint32_t * intra_dc_threshold) { uint32_t vol_ver_id; - uint32_t time_inc_resolution; + static uint32_t time_increment_resolution; uint32_t coding_type; uint32_t start_code; - - do - { + uint32_t time_incr = 0; + int32_t time_increment = 0; + + do { BitstreamByteAlign(bs); start_code = BitstreamShowBits(bs, 32); - if (start_code == VISOBJSEQ_START_CODE) - { - // DEBUG("visual_object_sequence"); - BitstreamSkip(bs, 32); // visual_object_sequence_start_code - BitstreamSkip(bs, 8); // profile_and_level_indication - } - else if (start_code == VISOBJSEQ_STOP_CODE) - { - BitstreamSkip(bs, 32); // visual_object_sequence_stop_code - } - else if (start_code == VISOBJ_START_CODE) - { - // DEBUG("visual_object"); - BitstreamSkip(bs,32); // visual_object_start_code - if (BitstreamGetBit(bs)) // is_visual_object_identified - { - vol_ver_id = BitstreamGetBits(bs,4); // visual_object_ver_id - BitstreamSkip(bs, 3); // visual_object_priority - } - else + if (start_code == VISOBJSEQ_START_CODE) { + + int profile; + + DPRINTF(DPRINTF_STARTCODE, ""); + + 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 */ + + DPRINTF(DPRINTF_STARTCODE, ""); + + } else if (start_code == VISOBJ_START_CODE) { + + DPRINTF(DPRINTF_STARTCODE, ""); + + 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 */ + } else { vol_ver_id = 1; } - if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type + if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ { - DEBUG("visual_object_type != video"); + 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 */ { - DEBUG("+ video_signal_type"); - BitstreamSkip(bs, 3); // video_format - BitstreamSkip(bs, 1); // video_range - if (BitstreamGetBit(bs)) // color_description + DPRINTF(DPRINTF_HEADER,"+ video_signal_type"); + BitstreamSkip(bs, 3); /* video_format */ + BitstreamSkip(bs, 1); /* video_range */ + if (BitstreamGetBit(bs)) /* color_description */ { - DEBUG("+ color_description"); - BitstreamSkip(bs, 8); // color_primaries - BitstreamSkip(bs, 8); // transfer_characteristics - BitstreamSkip(bs, 8); // matrix_coefficients + DPRINTF(DPRINTF_HEADER,"+ color_description"); + BitstreamSkip(bs, 8); /* color_primaries */ + BitstreamSkip(bs, 8); /* transfer_characteristics */ + BitstreamSkip(bs, 8); /* matrix_coefficients */ } } - } - else if ((start_code & ~0x1f) == VIDOBJ_START_CODE) - { - BitstreamSkip(bs, 32); // video_object_start_code - } - else if ((start_code & ~0xf) == VIDOBJLAY_START_CODE) - { - // DEBUG("video_object_layer"); - BitstreamSkip(bs, 32); // video_object_layer_start_code + } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { + + DPRINTF(DPRINTF_STARTCODE, ""); + DPRINTF(DPRINTF_HEADER, "vo id %i", start_code & VIDOBJ_START_CODE_MASK); + + BitstreamSkip(bs, 32); /* video_object_start_code */ - BitstreamSkip(bs, 1); // random_accessible_vol + } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { - // 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 + 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, 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 */ { - DEBUG1("video_object_type_indication not supported", BitstreamShowBits(bs, 8)); + DPRINTF(DPRINTF_ERROR,"video_object_type_indication %i not supported ", + BitstreamShowBits(bs, 8)); return -1; } BitstreamSkip(bs, 8); - if (BitstreamGetBit(bs)) // is_object_layer_identifier - { - DEBUG("+ is_object_layer_identifier"); - vol_ver_id = BitstreamGetBits(bs,4); // video_object_layer_verid - BitstreamSkip(bs, 3); // video_object_layer_priority - } - else + if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ { + DPRINTF(DPRINTF_HEADER, "+ is_object_layer_identifier"); + 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 */ + } else { vol_ver_id = 1; } - //DEBUGI("vol_ver_id", vol_ver_id); - if (BitstreamGetBits(bs, 4) == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info + if (BitstreamGetBits(bs, 4) == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ { - DEBUG("+ aspect_ratio_info"); - BitstreamSkip(bs, 8); // par_width - BitstreamSkip(bs, 8); // par_height + DPRINTF(DPRINTF_HEADER, "+ aspect_ratio_info"); + BitstreamSkip(bs, 8); /* par_width */ + BitstreamSkip(bs, 8); /* par_height */ } - if (BitstreamGetBit(bs)) // vol_control_parameters + if (BitstreamGetBit(bs)) /* vol_control_parameters */ { - DEBUG("+ vol_control_parameters"); - BitstreamSkip(bs, 2); // chroma_format - BitstreamSkip(bs, 1); // low_delay - if (BitstreamGetBit(bs)) // vbv_parameters + DPRINTF(DPRINTF_HEADER, "+ vol_control_parameters"); + 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 */ { - DEBUG("+ vbv_parameters"); - BitstreamSkip(bs, 15); // first_half_bitrate + DPRINTF(DPRINTF_HEADER,"+ vbv_parameters"); + BitstreamSkip(bs, 15); /* first_half_bitrate */ READ_MARKER(); - BitstreamSkip(bs, 15); // latter_half_bitrate + BitstreamSkip(bs, 15); /* latter_half_bitrate */ READ_MARKER(); - BitstreamSkip(bs, 15); // first_half_vbv_buffer_size + BitstreamSkip(bs, 15); /* first_half_vbv_buffer_size */ READ_MARKER(); - BitstreamSkip(bs, 3); // latter_half_vbv_buffer_size - BitstreamSkip(bs, 11); // first_half_vbv_occupancy + BitstreamSkip(bs, 3); /* latter_half_vbv_buffer_size */ + BitstreamSkip(bs, 11); /* first_half_vbv_occupancy */ READ_MARKER(); - BitstreamSkip(bs, 15); // latter_half_vbv_occupancy + BitstreamSkip(bs, 15); /* latter_half_vbv_occupancy */ READ_MARKER(); - + } } - dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape - // DEBUG1("shape", dec->shape); - - if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) - { - BitstreamSkip(bs, 4); // video_object_layer_shape_extension + dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ + DPRINTF(DPRINTF_HEADER, "shape %i", dec->shape); + + if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { + BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ } READ_MARKER(); - time_inc_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution - time_inc_resolution--; - if (time_inc_resolution > 0) - { - dec->time_inc_bits = log2bin(time_inc_resolution); - } - else - { - // dec->time_inc_bits = 0; +/* *************************** for decode B-frame time *********************** */ + time_increment_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ - // for "old" xvid compatibility, set time_inc_bits = 1 + DPRINTF(DPRINTF_HEADER,"vop_time_increment_resolution %i", time_increment_resolution); + +/* time_increment_resolution--; */ + + if (time_increment_resolution > 0) { + dec->time_inc_bits = log2bin(time_increment_resolution-1); + } else { + /* 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 */ { - BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment + DPRINTF(DPRINTF_HEADER, "+ fixed_vop_rate"); + BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ } - if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) - { + if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { - if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) - { + if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { uint32_t width, height; READ_MARKER(); - width = BitstreamGetBits(bs, 13); // video_object_layer_width - //DEBUGI("width", width); + width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ READ_MARKER(); - height = BitstreamGetBits(bs, 13); // video_object_layer_height - //DEBUGI("height", height); + height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ READ_MARKER(); - if (width != dec->width || height != dec->height) - { - DEBUG("FATAL: video dimension discrepancy ***"); - DEBUG2("bitstream width/height", width, height); - DEBUG2("param width/height", dec->width, dec->height); + DPRINTF(DPRINTF_HEADER, "width %i", width); + DPRINTF(DPRINTF_HEADER, "height %i", height); + + /* for auto set width & height */ + if (dec->width == 0) + 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; } } - - if (BitstreamGetBit(bs)) // interlaced - { - DEBUG("TODO: interlaced"); - // TODO - return -1; - } - if (!BitstreamGetBit(bs)) // obmc_disable + dec->interlacing = BitstreamGetBit(bs); + DPRINTF(DPRINTF_HEADER, "interlace", dec->interlacing); + + if (!BitstreamGetBit(bs)) /* obmc_disable */ { - DEBUG("IGNORED/TODO: !obmc_disable"); - // TODO - // fucking divx4.02 has this enabled + DPRINTF(DPRINTF_ERROR, "obmc_disabled==false not supported"); + /* TODO */ + /* fucking divx4.02 has this enabled */ } - if (BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2))) // sprite_enable + if (BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2))) /* sprite_enable */ { - DEBUG("sprite_enable; not supported"); + DPRINTF(DPRINTF_ERROR, "spriate_enabled not supported"); return -1; } - - if (vol_ver_id != 1 && dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) - { - BitstreamSkip(bs, 1); // sadct_disable - } - if (BitstreamGetBit(bs)) // not_8_bit - { - DEBUG("+ not_8_bit [IGNORED/TODO]"); - dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision - BitstreamSkip(bs, 4); // bits_per_pixel + if (vol_ver_id != 1 && + dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { + BitstreamSkip(bs, 1); /* sadct_disable */ } - else + + 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 */ + } 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 + if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { + BitstreamSkip(bs, 1); /* no_gray_quant_update */ + BitstreamSkip(bs, 1); /* composition_method */ + BitstreamSkip(bs, 1); /* linear_composition */ } - dec->quant_type = BitstreamGetBit(bs); // quant_type - // DEBUG1("**** quant_type", dec->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 (dec->quant_type) { + if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ { uint8_t matrix[64]; + + DPRINTF(DPRINTF_HEADER, "load_intra_quant_mat"); + bs_get_matrix(bs, matrix); set_intra_matrix(matrix); - } - else + } 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]; + uint8_t matrix[64]; + + DPRINTF(DPRINTF_HEADER, "load_inter_quant_mat"); + bs_get_matrix(bs, matrix); set_inter_matrix(matrix); - } - else + } else set_inter_matrix(get_default_inter_matrix()); - if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) - { - // TODO - DEBUG("TODO: grayscale matrix stuff"); + if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { + DPRINTF(DPRINTF_ERROR, "greyscale matrix not supported"); return -1; } } - - if (vol_ver_id != 1) - { - dec->quarterpel = BitstreamGetBit(bs); // quarter_sampe - if (dec->quarterpel) - { - DEBUG("IGNORED/TODO: quarter_sample"); - } + + if (vol_ver_id != 1) { + DPRINTF(DPRINTF_DEBUG, "QUARTERPEL BITSTREAM"); + dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ } else - { dec->quarterpel = 0; - } + - if (!BitstreamGetBit(bs)) // complexity_estimation_disable + if (!BitstreamGetBit(bs)) /* complexity_estimation_disable */ { - DEBUG("TODO: complexity_estimation header"); - // TODO + DPRINTF(DPRINTF_ERROR, "complexity_estimation not supported"); return -1; } - if (!BitstreamGetBit(bs)) // resync_marker_disable - { - DEBUG("IGNORED/TODO: !resync_marker_disable"); - // TODO - } + BitstreamSkip(bs, 1); /* resync_marker_disable */ - if (BitstreamGetBit(bs)) // data_partitioned + if (BitstreamGetBit(bs)) /* data_partitioned */ { - DEBUG("+ data_partitioned"); - BitstreamSkip(bs, 1); // reversible_vlc + DPRINTF(DPRINTF_ERROR, "data_partitioned not supported"); + BitstreamSkip(bs, 1); /* reversible_vlc */ } - if (vol_ver_id != 1) - { - if (BitstreamGetBit(bs)) // newpred_enable + if (vol_ver_id != 1) { + if (BitstreamGetBit(bs)) /* newpred_enable */ { - DEBUG("+ newpred_enable"); - BitstreamSkip(bs, 2); // requested_upstream_message_type - BitstreamSkip(bs, 1); // newpred_segment_type + 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 + if (BitstreamGetBit(bs)) /* reduced_resolution_vop_enable */ { - DEBUG("TODO: reduced_resolution_vop_enable"); - // TODO + DPRINTF(DPRINTF_ERROR, "reduced_resolution_vop not supported"); return -1; } } - - if (BitstreamGetBit(bs)) // scalability + + if ((dec->scalability = BitstreamGetBit(bs))) /* scalability */ { - // TODO - DEBUG("TODO: scalability"); + DPRINTF(DPRINTF_ERROR, "scalability not supported"); return -1; } - } - else // dec->shape == BINARY_ONLY + } else /* dec->shape == BINARY_ONLY */ { - if (vol_ver_id != 1) - { - if (BitstreamGetBit(bs)) // scalability + if (vol_ver_id != 1) { + if (BitstreamGetBit(bs)) /* scalability */ { - // TODO - DEBUG("TODO: scalability"); + DPRINTF(DPRINTF_ERROR, "scalability not supported"); return -1; } } - BitstreamSkip(bs, 1); // resync_marker_disable + BitstreamSkip(bs, 1); /* resync_marker_disable */ } - } - else if (start_code == GRPOFVOP_START_CODE) - { - // DEBUG("group_of_vop"); + } else if (start_code == GRPOFVOP_START_CODE) { + + DPRINTF(DPRINTF_STARTCODE, ""); + BitstreamSkip(bs, 32); { int hours, minutes, seconds; + hours = BitstreamGetBits(bs, 5); minutes = BitstreamGetBits(bs, 6); READ_MARKER(); seconds = BitstreamGetBits(bs, 6); - // DEBUG3("hms", hours, minutes, seconds); + + DPRINTF(DPRINTF_HEADER, "time %ih%im%is", hours); } - BitstreamSkip(bs, 1); // closed_gov - BitstreamSkip(bs, 1); // broken_link - } - else if (start_code == VOP_START_CODE) - { - // DEBUG("vop_start_code"); - BitstreamSkip(bs, 32); // vop_start_code + BitstreamSkip(bs, 1); /* closed_gov */ + BitstreamSkip(bs, 1); /* broken_link */ - coding_type = BitstreamGetBits(bs, 2); // vop_coding_type - //DEBUG1("coding_type", coding_type); + } else if (start_code == VOP_START_CODE) { + + DPRINTF(DPRINTF_STARTCODE, ""); + + BitstreamSkip(bs, 32); /* vop_start_code */ + + 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 */ + time_incr++; - while (BitstreamGetBit(bs) != 0) ; // time_base - READ_MARKER(); - - //DEBUG1("time_inc_bits", dec->time_inc_bits); - //DEBUG1("vop_time_incr", BitstreamShowBits(bs, dec->time_inc_bits)); - if (dec->time_inc_bits) - { - BitstreamSkip(bs, dec->time_inc_bits); // vop_time_increment + + if (dec->time_inc_bits) { + 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', + time_incr, time_increment); + + if (coding_type != B_VOP) { + dec->last_time_base = dec->time_base; + dec->time_base += time_incr; + dec->time = time_increment; + +/* dec->time_base * time_increment_resolution + + time_increment; +*/ dec->time_pp = (uint32_t) + (time_increment_resolution + dec->time - dec->last_non_b_time)%time_increment_resolution; + dec->last_non_b_time = dec->time; + } else { + dec->time = time_increment; +/* + (dec->last_time_base + + time_incr) * time_increment_resolution + time_increment; +*/ + dec->time_bp = (uint32_t) + (time_increment_resolution + dec->last_non_b_time - dec->time)%time_increment_resolution; } 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 (coding_type != I_VOP) - { - *rounding = BitstreamGetBit(bs); // rounding_type - //DEBUG1("rounding", *rounding); + { + } + */ + + /* fix a little bug by MinChen */ + if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && + (coding_type == P_VOP)) { + *rounding = BitstreamGetBit(bs); /* rounding_type */ + DPRINTF(DPRINTF_HEADER, "rounding %i", *rounding); } /* if (reduced_resolution_enable) - { - } - */ + { + } + */ - if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) - { + if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { uint32_t width, height; uint32_t horiz_mc_ref, vert_mc_ref; - + width = BitstreamGetBits(bs, 13); READ_MARKER(); height = BitstreamGetBits(bs, 13); @@ -501,80 +594,92 @@ vert_mc_ref = BitstreamGetBits(bs, 13); READ_MARKER(); - // DEBUG2("vop_width/height", width, height); - // DEBUG2("ref ", 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); - BitstreamSkip(bs, 1); // change_conv_ratio_disable - if (BitstreamGetBit(bs)) // vop_constant_alpha + 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 - *intra_dc_threshold = intra_dc_threshold_table[ BitstreamGetBits(bs,3) ]; - /* if (interlaced) - { - BitstreamSkip(bs, 1); // top_field_first - BitstreamSkip(bs, 1); // alternative_vertical_scan_flag - */ + if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { + /* intra_dc_vlc_threshold */ + *intra_dc_threshold = + intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; + + if (dec->interlacing) { + dec->top_field_first = BitstreamGetBit(bs); + DPRINTF(DPRINTF_HEADER, "interlace top_field_first %i", dec->top_field_first); + dec->alternate_vertical_scan = BitstreamGetBit(bs); + DPRINTF(DPRINTF_HEADER, "interlace alternate_vertical_scan %i", dec->alternate_vertical_scan); + + } } - - *quant = BitstreamGetBits(bs, dec->quant_bits); // vop_quant - //DEBUG1("quant", *quant); - - if (coding_type != I_VOP) - { - *fcode = BitstreamGetBits(bs, 3); // fcode_forward + + 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 */ + DPRINTF(DPRINTF_HEADER, "fcode_forward %i", *fcode_forward); } - - if (coding_type == B_VOP) - { - // *fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward + + if (coding_type == B_VOP) { + *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 */ + } } return coding_type; - } - else if (start_code == USERDATA_START_CODE) - { - // DEBUG("user_data"); - BitstreamSkip(bs, 32); // user_data_start_code - } - else // start_code == ? + + } else if (start_code == USERDATA_START_CODE) { + + DPRINTF(DPRINTF_STARTCODE, ""); + + BitstreamSkip(bs, 32); /* user_data_start_code */ + + } else /* start_code == ? */ { - if (BitstreamShowBits(bs, 24) == 0x000001) - { - DEBUG1("*** WARNING: unknown start_code", BitstreamShowBits(bs, 32)); + if (BitstreamShowBits(bs, 24) == 0x000001) { + DPRINTF(DPRINTF_STARTCODE, "", BitstreamShowBits(bs, 32)); } BitstreamSkip(bs, 8); } } while ((BitstreamPos(bs) >> 3) < bs->length); - DEBUG("*** WARNING: no vop_start_code found"); - return -1; /* ignore it */ + /*DPRINTF("*** WARNING: no vop_start_code found"); */ + return -1; /* ignore it */ } /* write custom quant matrix */ -static void bs_put_matrix(Bitstream * bs, const int16_t *matrix) +static void +bs_put_matrix(Bitstream * bs, + const int16_t * matrix) { int i, j; const int last = matrix[scan_tables[0][63]]; - for (j = 63; j >= 0 && matrix[scan_tables[0][j - 1]] == last; j--) ; + for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--); - for (i = 0; i <= j; i++) - { + for (i = 0; i <= j; i++) { BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); } - if (j < 63) - { + if (j < 63) { BitstreamPutBits(bs, 0, 8); } } @@ -583,78 +688,81 @@ /* write vol header */ -void BitstreamWriteVolHeader(Bitstream * const bs, - const int width, - const int height, - const int quant_type) +void +BitstreamWriteVolHeader(Bitstream * const bs, + const MBParam * pParam, + const FRAMEINFO * frame) { - // video object_start_code & vo_id - BitstreamPad(bs); + /* video object_start_code & vo_id */ + BitstreamPad(bs); BitstreamPutBits(bs, VO_START_CODE, 27); - BitstreamPutBits(bs, 0, 5); + BitstreamPutBits(bs, 0, 5); - // video_object_layer_start_code & vol_id + /* video_object_layer_start_code & vol_id */ BitstreamPutBits(bs, VOL_START_CODE, 28); BitstreamPutBits(bs, 0, 4); - 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); // vol_control_parameters (0=not given) - BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) + 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) */ - 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 - */ - BitstreamPutBits(bs, 2, 16); + BitstreamPutBit(bs, 1); /* vol_control_parameters */ + BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ + + 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(); - // fixed_vop_rate - BitstreamPutBit(bs, 0); + /* + * 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 + */ + BitstreamPutBits(bs, pParam->fbase, 16); + - // fixed_time_increment: value=nth_of_sec, nbits = log2(resolution) - // BitstreamPutBits(bs, 0, 15); + WRITE_MARKER(); + + BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ + BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); /* fixed_vop_time_increment */ WRITE_MARKER(); - BitstreamPutBits(bs, width, 13); // width + BitstreamPutBits(bs, pParam->width, 13); /* width */ WRITE_MARKER(); - BitstreamPutBits(bs, height, 13); // height + BitstreamPutBits(bs, pParam->height, 13); /* height */ WRITE_MARKER(); - - BitstreamPutBit(bs, 0); // interlace - BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) - BitstreamPutBit(bs, 0); // sprite_enable - BitstreamPutBit(bs, 0); // not_in_bit - // quant_type 0=h.263 1=mpeg4(quantizer tables) - BitstreamPutBit(bs, quant_type); - - if (quant_type) - { - BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat - if (get_intra_matrix_status()) - { + 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 */ + + /* 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 */ + if (get_intra_matrix_status()) { bs_put_matrix(bs, get_intra_matrix()); } - BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat - if (get_inter_matrix_status()) - { + 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 + BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ + BitstreamPutBit(bs, 1); /* resync_marker_disable */ + BitstreamPutBit(bs, 0); /* data_partitioned */ + BitstreamPutBit(bs, 0); /* scalability */ } @@ -666,36 +774,55 @@ 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, - VOP_TYPE prediction_type, - const int rounding_type, - const uint32_t quant, - const uint32_t fcode) +void +BitstreamWriteVopHeader(Bitstream * const bs, + const MBParam * pParam, + const FRAMEINFO * frame, + int vop_coded) { - BitstreamPad(bs); - BitstreamPutBits(bs, VOP_START_CODE, 32); + uint32_t i; + + BitstreamPad(bs); + BitstreamPutBits(bs, VOP_START_CODE, 32); + + BitstreamPutBits(bs, frame->coding_type, 2); - BitstreamPutBits(bs, prediction_type, 2); - - // time_base = 0 write n x PutBit(1), PutBit(0) - BitstreamPutBits(bs, 0, 1); + /* time_base = 0 write n x PutBit(1), PutBit(0) */ + for (i = 0; i < frame->seconds; i++) { + BitstreamPutBit(bs, 1); + } + BitstreamPutBit(bs, 0); WRITE_MARKER(); - // time_increment: value=nth_of_sec, nbits = log2(resolution) - BitstreamPutBits(bs, 1, 1); + /* time_increment: value=nth_of_sec, nbits = log2(resolution) */ + BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); WRITE_MARKER(); - BitstreamPutBits(bs, 1, 1); // vop_coded + if (!vop_coded) { + BitstreamPutBits(bs, 0, 1); + return; + } + + BitstreamPutBits(bs, 1, 1); /* vop_coded */ - if (prediction_type != I_VOP) - BitstreamPutBits(bs, rounding_type, 1); - - BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold + if (frame->coding_type == P_VOP) + BitstreamPutBits(bs, frame->rounding_type, 1); + + 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 */ + } + + BitstreamPutBits(bs, frame->quant, 5); /* quantizer */ + + if (frame->coding_type != I_VOP) + BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ + + if (frame->coding_type == B_VOP) + BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ - BitstreamPutBits(bs, quant, 5); // quantizer - - if (prediction_type != I_VOP) - BitstreamPutBits(bs, fcode, 3); // fixed_code = [1,4] }