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/****************************************************************************** |
/***************************************************************************** |
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* * |
* |
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* This file is part of XviD, a free MPEG-4 video encoder/decoder * |
* XVID MPEG-4 VIDEO CODEC |
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* * |
* - Bitstream reader/writer - |
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* XviD is an implementation of a part of one or more MPEG-4 Video tools * |
* |
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* as specified in ISO/IEC 14496-2 standard. Those intending to use this * |
* Copyright (C) 2001-2003 Peter Ross <pross@xvid.org> |
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* software module in hardware or software products are advised that its * |
* 2003 Cristoph Lampert <gruel@web.de> |
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* use may infringe existing patents or copyrights, and any such use * |
* |
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* would be at such party's own risk. The original developer of this * |
* This program is free software ; you can redistribute it and/or modify |
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* software module and his/her company, and subsequent editors and their * |
* it under the terms of the GNU General Public License as published by |
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* companies, will have no liability for use of this software or * |
* the Free Software Foundation ; either version 2 of the License, or |
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* modifications or derivatives thereof. * |
* (at your option) any later version. |
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* * |
* |
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* XviD is free software; you can redistribute it and/or modify it * |
* This program is distributed in the hope that it will be useful, |
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* under the terms of the GNU General Public License as published by * |
* but WITHOUT ANY WARRANTY ; without even the implied warranty of |
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* the Free Software Foundation; either version 2 of the License, or * |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* (at your option) any later version. * |
* GNU General Public License for more details. |
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* * |
* |
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* XviD is distributed in the hope that it will be useful, but * |
* You should have received a copy of the GNU General Public License |
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* WITHOUT ANY WARRANTY; without even the implied warranty of * |
* along with this program ; if not, write to the Free Software |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* GNU General Public License for more details. * |
* |
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* * |
* $Id$ |
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* You should have received a copy of the GNU General Public License * |
* |
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* along with this program; if not, write to the Free Software * |
****************************************************************************/ |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
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* * |
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******************************************************************************/ |
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/****************************************************************************** |
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* * |
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* bitstream.c * |
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* * |
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* Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * |
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* * |
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* For more information visit the XviD homepage: http://www.xvid.org * |
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* * |
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******************************************************************************/ |
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/****************************************************************************** |
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* * |
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* Revision history: * |
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* * |
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* 01.05.2002 added BVOP support to BitstreamWriteVopHeader |
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* 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
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* 26.03.2002 interlacing support * |
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* 03.03.2002 qmatrix writing * |
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* 03.03.2002 merged BITREADER and BITWRITER * |
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* 30.02.2002 intra_dc_threshold support * |
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* 04.12.2001 support for additional headers * |
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* 16.12.2001 inital version * |
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* * |
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******************************************************************************/ |
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#include <string.h> |
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#include <stdio.h> |
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#include "bitstream.h" |
#include "bitstream.h" |
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#include "zigzag.h" |
#include "zigzag.h" |
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#include "../quant/quant_matrix.h" |
#include "../quant/quant_matrix.h" |
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#include "mbcoding.h" |
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static int __inline log2bin(int value) |
static uint32_t __inline |
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log2bin(uint32_t value) |
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{ |
{ |
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/* Changed by Chenm001 */ |
/* Changed by Chenm001 */ |
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#ifndef WIN32 |
#if !defined(_MSC_VER) |
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int n = 0; |
int n = 0; |
42 |
while (value) |
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{ |
while (value) { |
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value >>= 1; |
value >>= 1; |
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n++; |
n++; |
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} |
} |
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} |
} |
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static const uint32_t intra_dc_threshold_table[] = |
static const uint32_t intra_dc_threshold_table[] = { |
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{ |
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32, /* never use */ |
32, /* never use */ |
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13, |
13, |
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15, |
15, |
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}; |
}; |
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void bs_get_matrix(Bitstream * bs, uint8_t * matrix) |
void |
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bs_get_matrix(Bitstream * bs, |
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uint8_t * matrix) |
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{ |
{ |
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int i = 0; |
int i = 0; |
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int last, value = 0; |
int last, value = 0; |
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do |
do { |
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{ |
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last = value; |
last = value; |
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value = BitstreamGetBits(bs, 8); |
value = BitstreamGetBits(bs, 8); |
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matrix[ scan_tables[0][i++] ] = value; |
matrix[ scan_tables[0][i++] ] = value; |
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} |
} |
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while (value != 0 && i < 64); |
while (value != 0 && i < 64); |
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i--; /* fix little bug at coeff not full */ |
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while (i < 64) |
while (i < 64) { |
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{ |
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matrix[ scan_tables[0][i++] ] = last; |
matrix[ scan_tables[0][i++] ] = last; |
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} |
} |
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} |
} |
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/* |
/* |
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decode headers |
* for PVOP addbits == fcode - 1 |
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returns coding_type, or -1 if error |
* for BVOP addbits == max(fcode,bcode) - 1 |
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* returns mbpos |
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*/ |
*/ |
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int |
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read_video_packet_header(Bitstream *bs, |
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DECODER * dec, |
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const int addbits, |
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int * quant, |
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int * fcode_forward, |
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int * fcode_backward, |
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int * intra_dc_threshold) |
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{ |
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int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits; |
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int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1); |
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int mbnum; |
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int hec = 0; |
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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) |
BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); |
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BitstreamSkip(bs, startcode_bits); |
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DPRINTF(XVID_DEBUG_STARTCODE, "<video_packet_header>\n"); |
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if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
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{ |
{ |
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uint32_t vol_ver_id; |
hec = BitstreamGetBit(bs); /* header_extension_code */ |
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static uint32_t time_increment_resolution; |
if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) |
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uint32_t coding_type; |
{ |
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uint32_t start_code; |
BitstreamSkip(bs, 13); /* vop_width */ |
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uint32_t time_incr=0; |
READ_MARKER(); |
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int32_t time_increment; |
BitstreamSkip(bs, 13); /* vop_height */ |
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READ_MARKER(); |
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BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ |
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READ_MARKER(); |
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BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ |
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READ_MARKER(); |
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} |
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} |
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mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
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DPRINTF(XVID_DEBUG_HEADER, "mbnum %i\n", mbnum); |
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do |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
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{ |
{ |
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BitstreamByteAlign(bs); |
*quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */ |
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start_code = BitstreamShowBits(bs, 32); |
DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); |
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} |
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if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
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hec = BitstreamGetBit(bs); /* header_extension_code */ |
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DPRINTF(XVID_DEBUG_HEADER, "header_extension_code %i\n", hec); |
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if (hec) |
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{ |
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int time_base; |
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int time_increment; |
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int coding_type; |
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for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */ |
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READ_MARKER(); |
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if (dec->time_inc_bits) |
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time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ |
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READ_MARKER(); |
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DPRINTF(XVID_DEBUG_HEADER,"time %i:%i\n", time_base, time_increment); |
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coding_type = BitstreamGetBits(bs, 2); |
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DPRINTF(XVID_DEBUG_HEADER,"coding_type %i\n", coding_type); |
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if (start_code == VISOBJSEQ_START_CODE) |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
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{ |
{ |
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// DEBUG("visual_object_sequence"); |
BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
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BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
if (coding_type != I_VOP) |
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BitstreamSkip(bs, 8); // profile_and_level_indication |
BitstreamSkip(bs, 1); /* vop_shape_coding_type */ |
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} |
} |
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else if (start_code == VISOBJSEQ_STOP_CODE) |
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if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
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{ |
{ |
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BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
*intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; |
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if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP && |
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dec->sprite_warping_points > 0) |
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{ |
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/* TODO: sprite trajectory */ |
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} |
} |
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else if (start_code == VISOBJ_START_CODE) |
if (dec->reduced_resolution_enable && |
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dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
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(coding_type == P_VOP || coding_type == I_VOP)) |
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{ |
{ |
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// DEBUG("visual_object"); |
BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */ |
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BitstreamSkip(bs,32); // visual_object_start_code |
} |
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if (BitstreamGetBit(bs)) // is_visual_object_identified |
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if (coding_type != I_VOP && fcode_forward) |
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{ |
{ |
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vol_ver_id = BitstreamGetBits(bs,4); // visual_object_ver_id |
*fcode_forward = BitstreamGetBits(bs, 3); |
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BitstreamSkip(bs, 3); // visual_object_priority |
DPRINTF(XVID_DEBUG_HEADER,"fcode_forward %i\n", *fcode_forward); |
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} |
} |
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else |
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if (coding_type == B_VOP && fcode_backward) |
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{ |
{ |
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vol_ver_id = 1; |
*fcode_backward = BitstreamGetBits(bs, 3); |
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DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
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} |
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} |
} |
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if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type |
} |
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if (dec->newpred_enable) |
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{ |
{ |
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DEBUG("visual_object_type != video"); |
int vop_id; |
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return -1; |
int vop_id_for_prediction; |
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vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
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DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
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if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
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{ |
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vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
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DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
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} |
} |
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BitstreamSkip(bs, 4); |
READ_MARKER(); |
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} |
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return mbnum; |
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} |
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/* vol estimation header */ |
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static void |
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read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec) |
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{ |
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ESTIMATION * e = &dec->estimation; |
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// video_signal_type |
e->method = BitstreamGetBits(bs, 2); /* estimation_method */ |
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DPRINTF(XVID_DEBUG_HEADER,"+ complexity_estimation_header; method=%i\n", e->method); |
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if (BitstreamGetBit(bs)) // video_signal_type |
if (e->method == 0 || e->method == 1) |
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{ |
{ |
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DEBUG("+ video_signal_type"); |
if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */ |
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BitstreamSkip(bs, 3); // video_format |
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BitstreamSkip(bs, 1); // video_range |
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if (BitstreamGetBit(bs)) // color_description |
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{ |
{ |
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DEBUG("+ color_description"); |
e->opaque = BitstreamGetBit(bs); /* opaque */ |
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BitstreamSkip(bs, 8); // color_primaries |
e->transparent = BitstreamGetBit(bs); /* transparent */ |
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BitstreamSkip(bs, 8); // transfer_characteristics |
e->intra_cae = BitstreamGetBit(bs); /* intra_cae */ |
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BitstreamSkip(bs, 8); // matrix_coefficients |
e->inter_cae = BitstreamGetBit(bs); /* inter_cae */ |
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e->no_update = BitstreamGetBit(bs); /* no_update */ |
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e->upsampling = BitstreamGetBit(bs); /* upsampling */ |
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} |
} |
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if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */ |
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{ |
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e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */ |
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e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */ |
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e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */ |
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e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */ |
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} |
} |
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} |
} |
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else if ((start_code & ~0x1f) == VIDOBJ_START_CODE) |
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READ_MARKER(); |
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if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */ |
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{ |
{ |
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BitstreamSkip(bs, 32); // video_object_start_code |
e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */ |
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e->dct_lines = BitstreamGetBit(bs); /* dct_lines */ |
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e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */ |
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e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */ |
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} |
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if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */ |
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{ |
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e->apm = BitstreamGetBit(bs); /* apm */ |
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e->npm = BitstreamGetBit(bs); /* npm */ |
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e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */ |
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e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */ |
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e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */ |
267 |
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e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */ |
268 |
} |
} |
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else if ((start_code & ~0xf) == VIDOBJLAY_START_CODE) |
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READ_MARKER(); |
271 |
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272 |
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if (e->method == 1) |
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{ |
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if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */ |
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{ |
{ |
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// DEBUG("video_object_layer"); |
e->sadct = BitstreamGetBit(bs); /* sadct */ |
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BitstreamSkip(bs, 32); // video_object_layer_start_code |
e->quarterpel = BitstreamGetBit(bs); /* quarterpel */ |
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} |
279 |
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} |
280 |
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} |
281 |
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282 |
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/* vop estimation header */ |
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static void |
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read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type) |
286 |
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{ |
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ESTIMATION * e = &dec->estimation; |
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289 |
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if (e->method == 0 || e->method == 1) |
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{ |
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if (coding_type == I_VOP) { |
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if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */ |
293 |
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if (e->transparent) BitstreamSkip(bs, 8); /* */ |
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if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
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if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
296 |
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if (e->no_update) BitstreamSkip(bs, 8); /* */ |
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if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
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if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
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if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
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if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
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if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
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if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
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if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
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if (e->sadct) BitstreamSkip(bs, 8); /* */ |
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} |
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if (coding_type == P_VOP) { |
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if (e->opaque) BitstreamSkip(bs, 8); /* */ |
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if (e->transparent) BitstreamSkip(bs, 8); /* */ |
310 |
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if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
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if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
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if (e->no_update) BitstreamSkip(bs, 8); /* */ |
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if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
314 |
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if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
315 |
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if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
316 |
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if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
317 |
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if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
318 |
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if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
319 |
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if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
320 |
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if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ |
321 |
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if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ |
322 |
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if (e->apm) BitstreamSkip(bs, 8); /* */ |
323 |
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if (e->npm) BitstreamSkip(bs, 8); /* */ |
324 |
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if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ |
325 |
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if (e->halfpel2) BitstreamSkip(bs, 8); /* */ |
326 |
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if (e->halfpel4) BitstreamSkip(bs, 8); /* */ |
327 |
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if (e->sadct) BitstreamSkip(bs, 8); /* */ |
328 |
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if (e->quarterpel) BitstreamSkip(bs, 8); /* */ |
329 |
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} |
330 |
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if (coding_type == B_VOP) { |
331 |
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if (e->opaque) BitstreamSkip(bs, 8); /* */ |
332 |
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if (e->transparent) BitstreamSkip(bs, 8); /* */ |
333 |
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if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
334 |
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if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
335 |
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if (e->no_update) BitstreamSkip(bs, 8); /* */ |
336 |
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if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
337 |
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if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
338 |
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if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
339 |
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if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
340 |
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if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
341 |
|
if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
342 |
|
if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
343 |
|
if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ |
344 |
|
if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ |
345 |
|
if (e->apm) BitstreamSkip(bs, 8); /* */ |
346 |
|
if (e->npm) BitstreamSkip(bs, 8); /* */ |
347 |
|
if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ |
348 |
|
if (e->halfpel2) BitstreamSkip(bs, 8); /* */ |
349 |
|
if (e->halfpel4) BitstreamSkip(bs, 8); /* */ |
350 |
|
if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ |
351 |
|
if (e->sadct) BitstreamSkip(bs, 8); /* */ |
352 |
|
if (e->quarterpel) BitstreamSkip(bs, 8); /* */ |
353 |
|
} |
354 |
|
|
355 |
|
if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) { |
356 |
|
if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
357 |
|
if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
358 |
|
if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
359 |
|
if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
360 |
|
if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
361 |
|
if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
362 |
|
if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ |
363 |
|
if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ |
364 |
|
if (e->apm) BitstreamSkip(bs, 8); /* */ |
365 |
|
if (e->npm) BitstreamSkip(bs, 8); /* */ |
366 |
|
if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ |
367 |
|
if (e->halfpel2) BitstreamSkip(bs, 8); /* */ |
368 |
|
if (e->halfpel4) BitstreamSkip(bs, 8); /* */ |
369 |
|
if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ |
370 |
|
} |
371 |
|
} |
372 |
|
} |
373 |
|
|
374 |
|
|
|
BitstreamSkip(bs, 1); // random_accessible_vol |
|
375 |
|
|
376 |
// video_object_type_indication |
|
377 |
if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && |
|
378 |
BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && |
/* |
379 |
BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && |
decode headers |
380 |
BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX |
returns coding_type, or -1 if error |
381 |
|
*/ |
382 |
|
|
383 |
|
#define VIDOBJ_START_CODE_MASK 0x0000001f |
384 |
|
#define VIDOBJLAY_START_CODE_MASK 0x0000000f |
385 |
|
|
386 |
|
int |
387 |
|
BitstreamReadHeaders(Bitstream * bs, |
388 |
|
DECODER * dec, |
389 |
|
uint32_t * rounding, |
390 |
|
uint32_t * reduced_resolution, |
391 |
|
uint32_t * quant, |
392 |
|
uint32_t * fcode_forward, |
393 |
|
uint32_t * fcode_backward, |
394 |
|
uint32_t * intra_dc_threshold, |
395 |
|
WARPPOINTS *gmc_warp) |
396 |
{ |
{ |
397 |
DEBUG1("video_object_type_indication not supported", BitstreamShowBits(bs, 8)); |
uint32_t vol_ver_id; |
398 |
|
uint32_t coding_type; |
399 |
|
uint32_t start_code; |
400 |
|
uint32_t time_incr = 0; |
401 |
|
int32_t time_increment = 0; |
402 |
|
int resize = 0; |
403 |
|
|
404 |
|
do { |
405 |
|
|
406 |
|
BitstreamByteAlign(bs); |
407 |
|
start_code = BitstreamShowBits(bs, 32); |
408 |
|
|
409 |
|
if (start_code == VISOBJSEQ_START_CODE) { |
410 |
|
|
411 |
|
int profile; |
412 |
|
|
413 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>\n"); |
414 |
|
|
415 |
|
BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */ |
416 |
|
profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */ |
417 |
|
|
418 |
|
DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i\n", profile); |
419 |
|
|
420 |
|
} else if (start_code == VISOBJSEQ_STOP_CODE) { |
421 |
|
|
422 |
|
BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */ |
423 |
|
|
424 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
425 |
|
|
426 |
|
} else if (start_code == VISOBJ_START_CODE) { |
427 |
|
int visobj_ver_id; |
428 |
|
|
429 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
430 |
|
|
431 |
|
BitstreamSkip(bs, 32); /* visual_object_start_code */ |
432 |
|
if (BitstreamGetBit(bs)) /* is_visual_object_identified */ |
433 |
|
{ |
434 |
|
visobj_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
435 |
|
DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", visobj_ver_id); |
436 |
|
BitstreamSkip(bs, 3); /* visual_object_priority */ |
437 |
|
} else { |
438 |
|
visobj_ver_id = 1; |
439 |
|
} |
440 |
|
|
441 |
|
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
442 |
|
{ |
443 |
|
DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video\n"); |
444 |
return -1; |
return -1; |
445 |
} |
} |
446 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 4); |
447 |
|
|
448 |
|
/* video_signal_type */ |
449 |
|
|
450 |
if (BitstreamGetBit(bs)) // is_object_layer_identifier |
if (BitstreamGetBit(bs)) /* video_signal_type */ |
451 |
|
{ |
452 |
|
DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type\n"); |
453 |
|
BitstreamSkip(bs, 3); /* video_format */ |
454 |
|
BitstreamSkip(bs, 1); /* video_range */ |
455 |
|
if (BitstreamGetBit(bs)) /* color_description */ |
456 |
{ |
{ |
457 |
DEBUG("+ is_object_layer_identifier"); |
DPRINTF(XVID_DEBUG_HEADER,"+ color_description"); |
458 |
vol_ver_id = BitstreamGetBits(bs,4); // video_object_layer_verid |
BitstreamSkip(bs, 8); /* color_primaries */ |
459 |
BitstreamSkip(bs, 3); // video_object_layer_priority |
BitstreamSkip(bs, 8); /* transfer_characteristics */ |
460 |
|
BitstreamSkip(bs, 8); /* matrix_coefficients */ |
461 |
} |
} |
462 |
else |
} |
463 |
|
} else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
464 |
|
|
465 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>\n"); |
466 |
|
DPRINTF(XVID_DEBUG_HEADER, "vo id %i\n", start_code & VIDOBJ_START_CODE_MASK); |
467 |
|
|
468 |
|
BitstreamSkip(bs, 32); /* video_object_start_code */ |
469 |
|
|
470 |
|
} else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { |
471 |
|
|
472 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>\n"); |
473 |
|
DPRINTF(XVID_DEBUG_HEADER, "vol id %i\n", start_code & VIDOBJLAY_START_CODE_MASK); |
474 |
|
|
475 |
|
BitstreamSkip(bs, 32); /* video_object_layer_start_code */ |
476 |
|
BitstreamSkip(bs, 1); /* random_accessible_vol */ |
477 |
|
|
478 |
|
BitstreamSkip(bs, 8); /* video_object_type_indication */ |
479 |
|
|
480 |
|
if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ |
481 |
{ |
{ |
482 |
|
DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier\n"); |
483 |
|
vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */ |
484 |
|
DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); |
485 |
|
BitstreamSkip(bs, 3); /* video_object_layer_priority */ |
486 |
|
} else { |
487 |
vol_ver_id = 1; |
vol_ver_id = 1; |
488 |
} |
} |
|
//DEBUGI("vol_ver_id", vol_ver_id); |
|
489 |
|
|
490 |
if (BitstreamGetBits(bs, 4) == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info |
dec->aspect_ratio = BitstreamGetBits(bs, 4); |
491 |
|
|
492 |
|
if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ |
493 |
{ |
{ |
494 |
DEBUG("+ aspect_ratio_info"); |
DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info\n"); |
495 |
BitstreamSkip(bs, 8); // par_width |
dec->par_width = BitstreamGetBits(bs, 8); /* par_width */ |
496 |
BitstreamSkip(bs, 8); // par_height |
dec->par_height = BitstreamGetBits(bs, 8); /* par_height */ |
497 |
} |
} |
498 |
|
|
499 |
if (BitstreamGetBit(bs)) // vol_control_parameters |
if (BitstreamGetBit(bs)) /* vol_control_parameters */ |
500 |
{ |
{ |
501 |
DEBUG("+ vol_control_parameters"); |
DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters\n"); |
502 |
BitstreamSkip(bs, 2); // chroma_format |
BitstreamSkip(bs, 2); /* chroma_format */ |
503 |
BitstreamSkip(bs, 1); // low_delay |
dec->low_delay = BitstreamGetBit(bs); /* low_delay */ |
504 |
if (BitstreamGetBit(bs)) // vbv_parameters |
DPRINTF(XVID_DEBUG_HEADER, "low_delay %i\n", dec->low_delay); |
505 |
|
if (BitstreamGetBit(bs)) /* vbv_parameters */ |
506 |
{ |
{ |
507 |
DEBUG("+ vbv_parameters"); |
unsigned int bitrate; |
508 |
BitstreamSkip(bs, 15); // first_half_bitrate |
unsigned int buffer_size; |
509 |
|
unsigned int occupancy; |
510 |
|
|
511 |
|
DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters\n"); |
512 |
|
|
513 |
|
bitrate = BitstreamGetBits(bs,15) << 15; /* first_half_bit_rate */ |
514 |
READ_MARKER(); |
READ_MARKER(); |
515 |
BitstreamSkip(bs, 15); // latter_half_bitrate |
bitrate |= BitstreamGetBits(bs,15); /* latter_half_bit_rate */ |
516 |
READ_MARKER(); |
READ_MARKER(); |
517 |
BitstreamSkip(bs, 15); // first_half_vbv_buffer_size |
|
518 |
|
buffer_size = BitstreamGetBits(bs, 15) << 3; /* first_half_vbv_buffer_size */ |
519 |
READ_MARKER(); |
READ_MARKER(); |
520 |
BitstreamSkip(bs, 3); // latter_half_vbv_buffer_size |
buffer_size |= BitstreamGetBits(bs, 3); /* latter_half_vbv_buffer_size */ |
521 |
BitstreamSkip(bs, 11); // first_half_vbv_occupancy |
|
522 |
|
occupancy = BitstreamGetBits(bs, 11) << 15; /* first_half_vbv_occupancy */ |
523 |
READ_MARKER(); |
READ_MARKER(); |
524 |
BitstreamSkip(bs, 15); // latter_half_vbv_occupancy |
occupancy |= BitstreamGetBits(bs, 15); /* latter_half_vbv_occupancy */ |
525 |
READ_MARKER(); |
READ_MARKER(); |
526 |
|
|
527 |
|
DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)\n", bitrate); |
528 |
|
DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)\n", buffer_size); |
529 |
|
DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)\n", occupancy); |
530 |
} |
} |
531 |
|
}else{ |
532 |
|
dec->low_delay = dec->low_delay_default; |
533 |
} |
} |
534 |
|
|
535 |
dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape |
dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ |
|
// DEBUG1("shape", dec->shape); |
|
536 |
|
|
537 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) |
DPRINTF(XVID_DEBUG_HEADER, "shape %i\n", dec->shape); |
538 |
|
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
539 |
{ |
{ |
540 |
BitstreamSkip(bs, 4); // video_object_layer_shape_extension |
DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported\n"); |
541 |
|
} |
542 |
|
|
543 |
|
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { |
544 |
|
BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ |
545 |
} |
} |
546 |
|
|
547 |
READ_MARKER(); |
READ_MARKER(); |
548 |
|
|
549 |
// *************************** for decode B-frame time *********************** |
/********************** for decode B-frame time ***********************/ |
550 |
time_increment_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution |
dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ |
551 |
time_increment_resolution--; |
DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution); |
552 |
//DEBUG1("time_increment_resolution=",time_increment_resolution); |
|
553 |
if (time_increment_resolution > 0) |
#if 0 |
554 |
{ |
dec->time_inc_resolution--; |
555 |
dec->time_inc_bits = log2bin(time_increment_resolution); |
#endif |
|
} |
|
|
else |
|
|
{ |
|
|
// dec->time_inc_bits = 0; |
|
556 |
|
|
557 |
// for "old" xvid compatibility, set time_inc_bits = 1 |
if (dec->time_inc_resolution > 0) { |
558 |
|
dec->time_inc_bits = log2bin(dec->time_inc_resolution-1); |
559 |
|
} else { |
560 |
|
#if 0 |
561 |
|
dec->time_inc_bits = 0; |
562 |
|
#endif |
563 |
|
/* for "old" xvid compatibility, set time_inc_bits = 1 */ |
564 |
dec->time_inc_bits = 1; |
dec->time_inc_bits = 1; |
565 |
} |
} |
566 |
|
|
567 |
READ_MARKER(); |
READ_MARKER(); |
568 |
|
|
569 |
if (BitstreamGetBit(bs)) // fixed_vop_rate |
if (BitstreamGetBit(bs)) /* fixed_vop_rate */ |
570 |
{ |
{ |
571 |
BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate\n"); |
572 |
|
BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ |
573 |
} |
} |
574 |
|
|
575 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
|
{ |
|
576 |
|
|
577 |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
|
{ |
|
578 |
uint32_t width, height; |
uint32_t width, height; |
579 |
|
|
580 |
READ_MARKER(); |
READ_MARKER(); |
581 |
width = BitstreamGetBits(bs, 13); // video_object_layer_width |
width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ |
|
//DEBUGI("width", width); |
|
582 |
READ_MARKER(); |
READ_MARKER(); |
583 |
height = BitstreamGetBits(bs, 13); // video_object_layer_height |
height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ |
|
//DEBUGI("height", height); |
|
584 |
READ_MARKER(); |
READ_MARKER(); |
585 |
|
|
586 |
if (width != dec->width || height != dec->height) |
DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
587 |
|
DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); |
588 |
|
|
589 |
|
if (dec->width != width || dec->height != height) |
590 |
|
{ |
591 |
|
if (dec->fixed_dimensions) |
592 |
{ |
{ |
593 |
DEBUG("FATAL: video dimension discrepancy ***"); |
DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream\n"); |
|
DEBUG2("bitstream width/height", width, height); |
|
|
DEBUG2("param width/height", dec->width, dec->height); |
|
594 |
return -1; |
return -1; |
595 |
} |
} |
596 |
|
resize = 1; |
597 |
|
dec->width = width; |
598 |
|
dec->height = height; |
599 |
} |
} |
600 |
|
} |
601 |
|
|
602 |
|
dec->interlacing = BitstreamGetBit(bs); |
603 |
|
DPRINTF(XVID_DEBUG_HEADER, "interlacing %i\n", dec->interlacing); |
604 |
|
|
605 |
if ((dec->interlacing = BitstreamGetBit(bs))) |
if (!BitstreamGetBit(bs)) /* obmc_disable */ |
606 |
{ |
{ |
607 |
DEBUG("vol: interlacing"); |
DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported\n"); |
608 |
|
/* TODO */ |
609 |
|
/* fucking divx4.02 has this enabled */ |
610 |
} |
} |
611 |
|
|
612 |
if (!BitstreamGetBit(bs)) // obmc_disable |
dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); /* sprite_enable */ |
613 |
|
|
614 |
|
if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) |
615 |
{ |
{ |
616 |
DEBUG("IGNORED/TODO: !obmc_disable"); |
int low_latency_sprite_enable; |
|
// TODO |
|
|
// fucking divx4.02 has this enabled |
|
|
} |
|
617 |
|
|
618 |
if (BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2))) // sprite_enable |
if (dec->sprite_enable != SPRITE_GMC) |
619 |
{ |
{ |
620 |
DEBUG("sprite_enable; not supported"); |
int sprite_width; |
621 |
return -1; |
int sprite_height; |
622 |
|
int sprite_left_coord; |
623 |
|
int sprite_top_coord; |
624 |
|
sprite_width = BitstreamGetBits(bs, 13); /* sprite_width */ |
625 |
|
READ_MARKER(); |
626 |
|
sprite_height = BitstreamGetBits(bs, 13); /* sprite_height */ |
627 |
|
READ_MARKER(); |
628 |
|
sprite_left_coord = BitstreamGetBits(bs, 13); /* sprite_left_coordinate */ |
629 |
|
READ_MARKER(); |
630 |
|
sprite_top_coord = BitstreamGetBits(bs, 13); /* sprite_top_coordinate */ |
631 |
|
READ_MARKER(); |
632 |
} |
} |
633 |
|
dec->sprite_warping_points = BitstreamGetBits(bs, 6); /* no_of_sprite_warping_points */ |
634 |
if (vol_ver_id != 1 && dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); /* sprite_warping_accuracy */ |
635 |
|
dec->sprite_brightness_change = BitstreamGetBits(bs, 1); /* brightness_change */ |
636 |
|
if (dec->sprite_enable != SPRITE_GMC) |
637 |
{ |
{ |
638 |
BitstreamSkip(bs, 1); // sadct_disable |
low_latency_sprite_enable = BitstreamGetBits(bs, 1); /* low_latency_sprite_enable */ |
639 |
|
} |
640 |
} |
} |
641 |
|
|
642 |
if (BitstreamGetBit(bs)) // not_8_bit |
if (vol_ver_id != 1 && |
643 |
{ |
dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
644 |
DEBUG("+ not_8_bit [IGNORED/TODO]"); |
BitstreamSkip(bs, 1); /* sadct_disable */ |
|
dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision |
|
|
BitstreamSkip(bs, 4); // bits_per_pixel |
|
645 |
} |
} |
646 |
else |
|
647 |
|
if (BitstreamGetBit(bs)) /* not_8_bit */ |
648 |
{ |
{ |
649 |
|
DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)\n"); |
650 |
|
dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */ |
651 |
|
BitstreamSkip(bs, 4); /* bits_per_pixel */ |
652 |
|
} else { |
653 |
dec->quant_bits = 5; |
dec->quant_bits = 5; |
654 |
} |
} |
655 |
|
|
656 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
657 |
{ |
BitstreamSkip(bs, 1); /* no_gray_quant_update */ |
658 |
BitstreamSkip(bs, 1); // no_gray_quant_update |
BitstreamSkip(bs, 1); /* composition_method */ |
659 |
BitstreamSkip(bs, 1); // composition_method |
BitstreamSkip(bs, 1); /* linear_composition */ |
|
BitstreamSkip(bs, 1); // linear_composition |
|
660 |
} |
} |
661 |
|
|
662 |
dec->quant_type = BitstreamGetBit(bs); // quant_type |
dec->quant_type = BitstreamGetBit(bs); /* quant_type */ |
663 |
// DEBUG1("**** quant_type", dec->quant_type); |
DPRINTF(XVID_DEBUG_HEADER, "quant_type %i\n", dec->quant_type); |
664 |
|
|
665 |
if (dec->quant_type) |
if (dec->quant_type) { |
666 |
{ |
if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ |
|
if (BitstreamGetBit(bs)) // load_intra_quant_mat |
|
667 |
{ |
{ |
668 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
669 |
|
|
670 |
|
DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n"); |
671 |
|
|
672 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
673 |
set_intra_matrix(matrix); |
set_intra_matrix(matrix); |
674 |
} |
} else |
|
else |
|
675 |
set_intra_matrix(get_default_intra_matrix()); |
set_intra_matrix(get_default_intra_matrix()); |
676 |
|
|
677 |
if (BitstreamGetBit(bs)) // load_inter_quant_mat |
if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
678 |
{ |
{ |
679 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
680 |
|
|
681 |
|
DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n"); |
682 |
|
|
683 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
684 |
set_inter_matrix(matrix); |
set_inter_matrix(matrix); |
685 |
} |
} else |
|
else |
|
686 |
set_inter_matrix(get_default_inter_matrix()); |
set_inter_matrix(get_default_inter_matrix()); |
687 |
|
|
688 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
689 |
{ |
DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n"); |
|
// TODO |
|
|
DEBUG("TODO: grayscale matrix stuff"); |
|
690 |
return -1; |
return -1; |
691 |
} |
} |
692 |
|
|
693 |
} |
} |
694 |
|
|
695 |
|
|
696 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
697 |
{ |
dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ |
698 |
dec->quarterpel = BitstreamGetBit(bs); // quarter_sampe |
DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i\n", dec->quarterpel); |
|
if (dec->quarterpel) |
|
|
{ |
|
|
DEBUG("IGNORED/TODO: quarter_sample"); |
|
|
} |
|
699 |
} |
} |
700 |
else |
else |
|
{ |
|
701 |
dec->quarterpel = 0; |
dec->quarterpel = 0; |
|
} |
|
702 |
|
|
|
if (!BitstreamGetBit(bs)) // complexity_estimation_disable |
|
|
{ |
|
|
DEBUG("TODO: complexity_estimation header"); |
|
|
// TODO |
|
|
return -1; |
|
|
} |
|
703 |
|
|
704 |
if (!BitstreamGetBit(bs)) // resync_marker_disable |
dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */ |
705 |
|
if (!dec->complexity_estimation_disable) |
706 |
{ |
{ |
707 |
DEBUG("IGNORED/TODO: !resync_marker_disable"); |
read_vol_complexity_estimation_header(bs, dec); |
|
// TODO |
|
708 |
} |
} |
709 |
|
|
710 |
if (BitstreamGetBit(bs)) // data_partitioned |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
711 |
|
|
712 |
|
if (BitstreamGetBit(bs)) /* data_partitioned */ |
713 |
{ |
{ |
714 |
DEBUG("+ data_partitioned"); |
DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported\n"); |
715 |
BitstreamSkip(bs, 1); // reversible_vlc |
BitstreamSkip(bs, 1); /* reversible_vlc */ |
716 |
} |
} |
717 |
|
|
718 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
719 |
{ |
dec->newpred_enable = BitstreamGetBit(bs); |
720 |
if (BitstreamGetBit(bs)) // newpred_enable |
if (dec->newpred_enable) /* newpred_enable */ |
721 |
{ |
{ |
722 |
DEBUG("+ newpred_enable"); |
DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable\n"); |
723 |
BitstreamSkip(bs, 2); // requested_upstream_message_type |
BitstreamSkip(bs, 2); /* requested_upstream_message_type */ |
724 |
BitstreamSkip(bs, 1); // newpred_segment_type |
BitstreamSkip(bs, 1); /* newpred_segment_type */ |
725 |
} |
} |
726 |
if (BitstreamGetBit(bs)) // reduced_resolution_vop_enable |
dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */ |
727 |
{ |
DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i\n", dec->reduced_resolution_enable); |
|
DEBUG("TODO: reduced_resolution_vop_enable"); |
|
|
// TODO |
|
|
return -1; |
|
728 |
} |
} |
729 |
|
else |
730 |
|
{ |
731 |
|
dec->newpred_enable = 0; |
732 |
|
dec->reduced_resolution_enable = 0; |
733 |
} |
} |
734 |
|
|
735 |
if ((dec->scalability=BitstreamGetBit(bs))) // scalability |
dec->scalability = BitstreamGetBit(bs); /* scalability */ |
736 |
|
if (dec->scalability) |
737 |
{ |
{ |
738 |
// TODO |
DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
739 |
DEBUG("TODO: scalability"); |
BitstreamSkip(bs, 1); /* hierarchy_type */ |
740 |
return -1; |
BitstreamSkip(bs, 4); /* ref_layer_id */ |
741 |
|
BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */ |
742 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ |
743 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ |
744 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ |
745 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ |
746 |
|
BitstreamSkip(bs, 1); /* enhancement_type */ |
747 |
|
if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) { |
748 |
|
BitstreamSkip(bs, 1); /* use_ref_shape */ |
749 |
|
BitstreamSkip(bs, 1); /* use_ref_texture */ |
750 |
|
BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */ |
751 |
|
BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */ |
752 |
|
BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */ |
753 |
|
BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */ |
754 |
} |
} |
755 |
|
return -1; |
756 |
} |
} |
757 |
else // dec->shape == BINARY_ONLY |
} else /* dec->shape == BINARY_ONLY */ |
758 |
{ |
{ |
759 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
760 |
{ |
dec->scalability = BitstreamGetBit(bs); /* scalability */ |
761 |
if (BitstreamGetBit(bs)) // scalability |
if (dec->scalability) |
762 |
{ |
{ |
763 |
// TODO |
DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
764 |
DEBUG("TODO: scalability"); |
BitstreamSkip(bs, 4); /* ref_layer_id */ |
765 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ |
766 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ |
767 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ |
768 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ |
769 |
return -1; |
return -1; |
770 |
} |
} |
771 |
} |
} |
772 |
BitstreamSkip(bs, 1); // resync_marker_disable |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
773 |
|
|
774 |
} |
} |
775 |
|
|
776 |
} |
return (resize ? -3 : -2 ); /* VOL */ |
777 |
else if (start_code == GRPOFVOP_START_CODE) |
|
778 |
{ |
} else if (start_code == GRPOFVOP_START_CODE) { |
779 |
// DEBUG("group_of_vop"); |
|
780 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>\n"); |
781 |
|
|
782 |
BitstreamSkip(bs, 32); |
BitstreamSkip(bs, 32); |
783 |
{ |
{ |
784 |
int hours, minutes, seconds; |
int hours, minutes, seconds; |
785 |
|
|
786 |
hours = BitstreamGetBits(bs, 5); |
hours = BitstreamGetBits(bs, 5); |
787 |
minutes = BitstreamGetBits(bs, 6); |
minutes = BitstreamGetBits(bs, 6); |
788 |
READ_MARKER(); |
READ_MARKER(); |
789 |
seconds = BitstreamGetBits(bs, 6); |
seconds = BitstreamGetBits(bs, 6); |
790 |
// DEBUG3("hms", hours, minutes, seconds); |
|
791 |
} |
DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is\n", hours,minutes,seconds); |
|
BitstreamSkip(bs, 1); // closed_gov |
|
|
BitstreamSkip(bs, 1); // broken_link |
|
792 |
} |
} |
793 |
else if (start_code == VOP_START_CODE) |
BitstreamSkip(bs, 1); /* closed_gov */ |
794 |
{ |
BitstreamSkip(bs, 1); /* broken_link */ |
|
// DEBUG("vop_start_code"); |
|
|
BitstreamSkip(bs, 32); // vop_start_code |
|
795 |
|
|
796 |
coding_type = BitstreamGetBits(bs, 2); // vop_coding_type |
} else if (start_code == VOP_START_CODE) { |
|
//DEBUG1("coding_type", coding_type); |
|
797 |
|
|
798 |
// *************************** for decode B-frame time *********************** |
DPRINTF(XVID_DEBUG_STARTCODE, "<vop>\n"); |
799 |
while (BitstreamGetBit(bs) != 0) // time_base |
|
800 |
|
BitstreamSkip(bs, 32); /* vop_start_code */ |
801 |
|
|
802 |
|
coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */ |
803 |
|
DPRINTF(XVID_DEBUG_HEADER, "coding_type %i\n", coding_type); |
804 |
|
|
805 |
|
/*********************** for decode B-frame time ***********************/ |
806 |
|
while (BitstreamGetBit(bs) != 0) /* time_base */ |
807 |
time_incr++; |
time_incr++; |
808 |
|
|
809 |
READ_MARKER(); |
READ_MARKER(); |
810 |
|
|
811 |
//DEBUG1("time_inc_bits", dec->time_inc_bits); |
if (dec->time_inc_bits) { |
812 |
//DEBUG1("vop_time_incr", BitstreamShowBits(bs, dec->time_inc_bits)); |
time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ |
|
if (dec->time_inc_bits) |
|
|
{ |
|
|
//BitstreamSkip(bs, dec->time_inc_bits); // vop_time_increment |
|
|
time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment |
|
813 |
} |
} |
814 |
|
|
815 |
|
DPRINTF(XVID_DEBUG_HEADER, "time_base %i\n", time_incr); |
816 |
|
DPRINTF(XVID_DEBUG_HEADER, "time_increment %i\n", time_increment); |
817 |
|
|
818 |
|
DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i\n", |
819 |
|
coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
820 |
|
time_incr, time_increment); |
821 |
|
|
822 |
if(coding_type != B_VOP){ |
if(coding_type != B_VOP){ |
823 |
dec->last_time_base = dec->time_base; |
dec->last_time_base = dec->time_base; |
824 |
dec->time_base += time_incr; |
dec->time_base += time_incr; |
825 |
dec->time = dec->time_base*time_increment_resolution + time_increment; |
dec->time = time_increment; |
826 |
dec->time_pp= (uint32_t)(dec->time - dec->last_non_b_time); |
|
827 |
|
#if 0 |
828 |
|
dec->time_base * dec->time_inc_resolution + |
829 |
|
time_increment; |
830 |
|
#endif |
831 |
|
dec->time_pp = (uint32_t) |
832 |
|
(dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution; |
833 |
dec->last_non_b_time= dec->time; |
dec->last_non_b_time= dec->time; |
834 |
}else{ |
}else{ |
835 |
dec->time = (dec->last_time_base + time_incr)*time_increment_resolution + time_increment; |
dec->time = time_increment; |
836 |
dec->time_bp= (uint32_t)(dec->last_non_b_time - dec->time); |
#if 0 |
837 |
|
(dec->last_time_base + |
838 |
|
time_incr) * dec->time_inc_resolution + time_increment; |
839 |
|
#endif |
840 |
|
dec->time_bp = (uint32_t) |
841 |
|
(dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution; |
842 |
} |
} |
843 |
//DEBUG1("time_increment=",time_increment); |
DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
844 |
|
DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); |
845 |
|
|
846 |
READ_MARKER(); |
READ_MARKER(); |
847 |
|
|
848 |
if (!BitstreamGetBit(bs)) // vop_coded |
if (!BitstreamGetBit(bs)) /* vop_coded */ |
849 |
{ |
{ |
850 |
|
DPRINTF(XVID_DEBUG_HEADER, "vop_coded==false\n"); |
851 |
return N_VOP; |
return N_VOP; |
852 |
} |
} |
853 |
|
|
854 |
/* if (newpred_enable) |
if (dec->newpred_enable) |
855 |
{ |
{ |
856 |
} |
int vop_id; |
857 |
*/ |
int vop_id_for_prediction; |
858 |
|
|
859 |
// fix a little bug by MinChen <chenm002@163.com> |
vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
860 |
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && (coding_type == P_VOP)) |
DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
861 |
|
if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
862 |
{ |
{ |
863 |
*rounding = BitstreamGetBit(bs); // rounding_type |
vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
864 |
//DEBUG1("rounding", *rounding); |
DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
865 |
|
} |
866 |
|
READ_MARKER(); |
867 |
} |
} |
868 |
|
|
869 |
/* if (reduced_resolution_enable) |
|
870 |
{ |
|
871 |
|
/* fix a little bug by MinChen <chenm002@163.com> */ |
872 |
|
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
873 |
|
( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
874 |
|
*rounding = BitstreamGetBit(bs); /* rounding_type */ |
875 |
|
DPRINTF(XVID_DEBUG_HEADER, "rounding %i\n", *rounding); |
876 |
} |
} |
|
*/ |
|
877 |
|
|
878 |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->reduced_resolution_enable && |
879 |
|
dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
880 |
|
(coding_type == P_VOP || coding_type == I_VOP)) { |
881 |
|
|
882 |
|
*reduced_resolution = BitstreamGetBit(bs); |
883 |
|
DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution %i\n", *reduced_resolution); |
884 |
|
} |
885 |
|
else |
886 |
{ |
{ |
887 |
|
*reduced_resolution = 0; |
888 |
|
} |
889 |
|
|
890 |
|
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
891 |
|
if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { |
892 |
|
|
893 |
uint32_t width, height; |
uint32_t width, height; |
894 |
uint32_t horiz_mc_ref, vert_mc_ref; |
uint32_t horiz_mc_ref, vert_mc_ref; |
895 |
|
|
902 |
vert_mc_ref = BitstreamGetBits(bs, 13); |
vert_mc_ref = BitstreamGetBits(bs, 13); |
903 |
READ_MARKER(); |
READ_MARKER(); |
904 |
|
|
905 |
// DEBUG2("vop_width/height", width, height); |
DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
906 |
// DEBUG2("ref ", horiz_mc_ref, vert_mc_ref); |
DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); |
907 |
|
DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i\n", horiz_mc_ref); |
908 |
|
DPRINTF(XVID_DEBUG_HEADER, "vert_mc_ref %i\n", vert_mc_ref); |
909 |
|
} |
910 |
|
|
911 |
BitstreamSkip(bs, 1); // change_conv_ratio_disable |
BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
912 |
if (BitstreamGetBit(bs)) // vop_constant_alpha |
if (BitstreamGetBit(bs)) /* vop_constant_alpha */ |
913 |
{ |
{ |
914 |
BitstreamSkip(bs, 8); // vop_constant_alpha_value |
BitstreamSkip(bs, 8); /* vop_constant_alpha_value */ |
915 |
} |
} |
916 |
} |
} |
917 |
|
|
918 |
|
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
919 |
|
|
920 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (!dec->complexity_estimation_disable) |
921 |
{ |
{ |
922 |
// intra_dc_vlc_threshold |
read_vop_complexity_estimation_header(bs, dec, coding_type); |
923 |
*intra_dc_threshold = intra_dc_threshold_table[ BitstreamGetBits(bs,3) ]; |
} |
924 |
|
|
925 |
if (dec->interlacing) |
/* intra_dc_vlc_threshold */ |
926 |
{ |
*intra_dc_threshold = |
927 |
if ((dec->top_field_first = BitstreamGetBit(bs))) |
intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; |
928 |
|
|
929 |
|
dec->top_field_first = 0; |
930 |
|
dec->alternate_vertical_scan = 0; |
931 |
|
|
932 |
|
if (dec->interlacing) { |
933 |
|
dec->top_field_first = BitstreamGetBit(bs); |
934 |
|
DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i\n", dec->top_field_first); |
935 |
|
dec->alternate_vertical_scan = BitstreamGetBit(bs); |
936 |
|
DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i\n", dec->alternate_vertical_scan); |
937 |
|
|
938 |
|
} |
939 |
|
} |
940 |
|
|
941 |
|
if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
942 |
|
|
943 |
|
int i; |
944 |
|
|
945 |
|
for (i = 0 ; i < dec->sprite_warping_points; i++) |
946 |
{ |
{ |
947 |
DEBUG("vop: top_field_first"); |
int length; |
948 |
|
int x = 0, y = 0; |
949 |
|
|
950 |
|
/* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */ |
951 |
|
length = bs_get_spritetrajectory(bs); |
952 |
|
if(length){ |
953 |
|
x= BitstreamGetBits(bs, length); |
954 |
|
if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ |
955 |
|
x = - (x ^ ((1 << length) - 1)); |
956 |
|
} |
957 |
|
READ_MARKER(); |
958 |
|
|
959 |
|
length = bs_get_spritetrajectory(bs); |
960 |
|
if(length){ |
961 |
|
y = BitstreamGetBits(bs, length); |
962 |
|
if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ |
963 |
|
y = - (y ^ ((1 << length) - 1)); |
964 |
|
} |
965 |
|
READ_MARKER(); |
966 |
|
|
967 |
|
gmc_warp->duv[i].x = x; |
968 |
|
gmc_warp->duv[i].y = y; |
969 |
|
|
970 |
|
DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", i, x, y); |
971 |
} |
} |
972 |
if ((dec->alternate_vertical_scan = BitstreamGetBit(bs))) |
|
973 |
|
if (dec->sprite_brightness_change) |
974 |
{ |
{ |
975 |
DEBUG("vop: alternate_vertical_scan"); |
/* XXX: brightness_change_factor() */ |
976 |
} |
} |
977 |
|
if (dec->sprite_enable == SPRITE_STATIC) |
978 |
|
{ |
979 |
|
/* XXX: todo */ |
980 |
} |
} |
981 |
|
|
982 |
} |
} |
983 |
|
|
984 |
if((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) // vop_quant |
if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */ |
985 |
*quant = 1; |
*quant = 1; |
986 |
|
DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); |
987 |
|
|
988 |
//DEBUG1("quant", *quant); |
if (coding_type != I_VOP) { |
989 |
|
*fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */ |
990 |
if (coding_type != I_VOP) |
DPRINTF(XVID_DEBUG_HEADER, "fcode_forward %i\n", *fcode_forward); |
|
{ |
|
|
*fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward |
|
991 |
} |
} |
992 |
|
|
993 |
if (coding_type == B_VOP) |
if (coding_type == B_VOP) { |
994 |
{ |
*fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */ |
995 |
*fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward |
DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i\n", *fcode_backward); |
996 |
} |
} |
997 |
if (!dec->scalability){ |
if (!dec->scalability){ |
998 |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && (coding_type != I_VOP)){ |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && |
999 |
BitstreamSkip(bs, 1); // vop_shape_coding_type |
(coding_type != I_VOP)) { |
1000 |
|
BitstreamSkip(bs, 1); /* vop_shape_coding_type */ |
1001 |
} |
} |
1002 |
} |
} |
1003 |
return coding_type; |
return coding_type; |
1004 |
|
|
1005 |
|
} else if (start_code == USERDATA_START_CODE) { |
1006 |
|
char tmp[256]; |
1007 |
|
int i, version, build; |
1008 |
|
char packed; |
1009 |
|
|
1010 |
|
BitstreamSkip(bs, 32); /* user_data_start_code */ |
1011 |
|
|
1012 |
|
tmp[0] = BitstreamShowBits(bs, 8); |
1013 |
|
|
1014 |
|
for(i = 1; i < 256; i++){ |
1015 |
|
tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); |
1016 |
|
|
1017 |
|
if(tmp[i] == 0) |
1018 |
|
break; |
1019 |
|
|
1020 |
|
BitstreamSkip(bs, 8); |
1021 |
} |
} |
1022 |
else if (start_code == USERDATA_START_CODE) |
|
1023 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp); |
1024 |
|
|
1025 |
|
/* divx detection */ |
1026 |
|
i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); |
1027 |
|
if (i < 2) |
1028 |
|
i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed); |
1029 |
|
|
1030 |
|
if (i >= 2) |
1031 |
{ |
{ |
1032 |
// DEBUG("user_data"); |
dec->packed_mode = (i == 3 && packed == 'p'); |
1033 |
BitstreamSkip(bs, 32); // user_data_start_code |
DPRINTF(XVID_DEBUG_HEADER, "divx version=%i, build=%i packed=%i\n", |
1034 |
|
version, build, dec->packed_mode); |
1035 |
} |
} |
1036 |
else // start_code == ? |
|
1037 |
{ |
} else /* start_code == ? */ |
|
if (BitstreamShowBits(bs, 24) == 0x000001) |
|
1038 |
{ |
{ |
1039 |
DEBUG1("*** WARNING: unknown start_code", BitstreamShowBits(bs, 32)); |
if (BitstreamShowBits(bs, 24) == 0x000001) { |
1040 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>\n", BitstreamShowBits(bs, 32)); |
1041 |
} |
} |
1042 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
1043 |
} |
} |
1044 |
} |
} |
1045 |
while ((BitstreamPos(bs) >> 3) < bs->length); |
while ((BitstreamPos(bs) >> 3) < bs->length); |
1046 |
|
|
1047 |
DEBUG("*** WARNING: no vop_start_code found"); |
#if 0 |
1048 |
|
DPRINTF("*** WARNING: no vop_start_code found"); |
1049 |
|
#endif |
1050 |
return -1; /* ignore it */ |
return -1; /* ignore it */ |
1051 |
} |
} |
1052 |
|
|
1053 |
|
|
1054 |
/* write custom quant matrix */ |
/* write custom quant matrix */ |
1055 |
|
|
1056 |
static void bs_put_matrix(Bitstream * bs, const int16_t *matrix) |
static void |
1057 |
|
bs_put_matrix(Bitstream * bs, |
1058 |
|
const int16_t * matrix) |
1059 |
{ |
{ |
1060 |
int i, j; |
int i, j; |
1061 |
const int last = matrix[scan_tables[0][63]]; |
const int last = matrix[scan_tables[0][63]]; |
1062 |
|
|
1063 |
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--); |
1064 |
|
|
1065 |
for (i = 0; i <= j; i++) |
for (i = 0; i <= j; i++) { |
|
{ |
|
1066 |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
1067 |
} |
} |
1068 |
|
|
1069 |
if (j < 63) |
if (j < 63) { |
|
{ |
|
1070 |
BitstreamPutBits(bs, 0, 8); |
BitstreamPutBits(bs, 0, 8); |
1071 |
} |
} |
1072 |
} |
} |
1075 |
/* |
/* |
1076 |
write vol header |
write vol header |
1077 |
*/ |
*/ |
1078 |
void BitstreamWriteVolHeader(Bitstream * const bs, |
void |
1079 |
const MBParam * pParam, const FRAMEINFO * frame) |
BitstreamWriteVolHeader(Bitstream * const bs, |
1080 |
|
const MBParam * pParam) |
1081 |
{ |
{ |
1082 |
// video object_start_code & vo_id |
static const unsigned int vo_id = 0; |
1083 |
|
static const unsigned int vol_id = 0; |
1084 |
|
int vol_ver_id=1; |
1085 |
|
int vol_type_ind=VIDOBJLAY_TYPE_SIMPLE; |
1086 |
|
|
1087 |
|
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1088 |
|
(pParam->vol_flags & XVID_VOL_GMC) || |
1089 |
|
(pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
1090 |
|
vol_ver_id = 2; |
1091 |
|
|
1092 |
|
if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) { |
1093 |
|
vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE; |
1094 |
|
} |
1095 |
|
|
1096 |
|
if ((pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1097 |
|
(pParam->vol_flags & XVID_VOL_GMC)) { |
1098 |
|
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
1099 |
|
} |
1100 |
|
|
1101 |
|
/* visual_object_sequence_start_code */ |
1102 |
|
#if 0 |
1103 |
|
BitstreamPad(bs); |
1104 |
|
#endif |
1105 |
|
|
1106 |
|
/* |
1107 |
|
* no padding here, anymore. You have to make sure that you are |
1108 |
|
* byte aligned, and that always 1-8 padding bits have been written |
1109 |
|
*/ |
1110 |
|
|
1111 |
|
if (pParam->profile) { |
1112 |
|
BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); |
1113 |
|
BitstreamPutBits(bs, pParam->profile, 8); |
1114 |
|
} |
1115 |
|
|
1116 |
|
/* visual_object_start_code */ |
1117 |
BitstreamPad(bs); |
BitstreamPad(bs); |
1118 |
BitstreamPutBits(bs, VO_START_CODE, 27); |
BitstreamPutBits(bs, VISOBJ_START_CODE, 32); |
1119 |
BitstreamPutBits(bs, 0, 5); |
BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */ |
1120 |
|
BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */ |
1121 |
|
|
1122 |
|
/* video object_start_code & vo_id */ |
1123 |
|
BitstreamPad(bs); |
1124 |
|
BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
1125 |
|
|
1126 |
|
/* video_object_layer_start_code & vol_id */ |
1127 |
|
BitstreamPad(bs); |
1128 |
|
BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32); |
1129 |
|
|
1130 |
|
BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
1131 |
|
BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */ |
1132 |
|
|
1133 |
|
if (vol_ver_id == 1) |
1134 |
|
{ |
1135 |
|
BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ |
1136 |
|
} |
1137 |
|
else |
1138 |
|
{ |
1139 |
|
BitstreamPutBit(bs, 1); /* is_object_layer_identified */ |
1140 |
|
BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */ |
1141 |
|
BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==lowest, 7==highest) ?? */ |
1142 |
|
} |
1143 |
|
|
1144 |
|
BitstreamPutBits(bs, 1, 4); /* aspect_ratio_info (1=1:1) */ |
1145 |
|
|
1146 |
// video_object_layer_start_code & vol_id |
BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
1147 |
BitstreamPutBits(bs, VOL_START_CODE, 28); |
BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ |
1148 |
BitstreamPutBits(bs, 0, 4); |
|
1149 |
|
if (pParam->max_bframes > 0) { |
1150 |
BitstreamPutBit(bs, 0); // random_accessible_vol |
BitstreamPutBit(bs, 0); /* low_delay */ |
1151 |
BitstreamPutBits(bs, 0, 8); // video_object_type_indication |
} else |
1152 |
BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given) |
{ |
1153 |
BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
BitstreamPutBit(bs, 1); /* low_delay */ |
1154 |
BitstreamPutBit(bs, 0); // vol_control_parameters (0=not given) |
} |
1155 |
BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */ |
1156 |
|
|
1157 |
|
BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */ |
1158 |
|
|
1159 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1160 |
|
|
1161 |
/* time_increment_resolution; ignored by current decore versions |
/* |
1162 |
eg. 2fps res=2 inc=1 |
* time_inc_resolution; ignored by current decore versions |
1163 |
25fps res=25 inc=1 |
* eg. 2fps res=2 inc=1 |
1164 |
29.97fps res=30000 inc=1001 |
* 25fps res=25 inc=1 |
1165 |
|
* 29.97fps res=30000 inc=1001 |
1166 |
*/ |
*/ |
1167 |
BitstreamPutBits(bs, 2, 16); |
BitstreamPutBits(bs, pParam->fbase, 16); |
1168 |
|
|
1169 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1170 |
|
|
1171 |
// fixed_vop_rate |
if (pParam->fincr>0) { |
1172 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
1173 |
|
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); /* fixed_vop_time_increment */ |
1174 |
// fixed_time_increment: value=nth_of_sec, nbits = log2(resolution) |
}else{ |
1175 |
// BitstreamPutBits(bs, 0, 15); |
BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ |
1176 |
|
} |
1177 |
|
|
1178 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1179 |
BitstreamPutBits(bs, pParam->width, 13); // width |
BitstreamPutBits(bs, pParam->width, 13); /* width */ |
1180 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1181 |
BitstreamPutBits(bs, pParam->height, 13); // height |
BitstreamPutBits(bs, pParam->height, 13); /* height */ |
1182 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1183 |
|
|
1184 |
BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace |
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); /* interlace */ |
1185 |
BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
BitstreamPutBit(bs, 1); /* obmc_disable (overlapped block motion compensation) */ |
|
BitstreamPutBit(bs, 0); // sprite_enable |
|
|
BitstreamPutBit(bs, 0); // not_in_bit |
|
1186 |
|
|
1187 |
// quant_type 0=h.263 1=mpeg4(quantizer tables) |
if (vol_ver_id != 1) |
1188 |
BitstreamPutBit(bs, pParam->m_quant_type); |
{ if ((pParam->vol_flags & XVID_VOL_GMC)) |
1189 |
|
{ BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */ |
1190 |
|
BitstreamPutBits(bs, 2, 6); /* no_of_sprite_warping_points */ |
1191 |
|
BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ |
1192 |
|
BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */ |
1193 |
|
|
1194 |
if (pParam->m_quant_type) |
/* |
1195 |
{ |
* currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 |
1196 |
BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
* for DivX5 compatability |
1197 |
if (get_intra_matrix_status()) |
*/ |
1198 |
{ |
|
1199 |
|
} else |
1200 |
|
BitstreamPutBits(bs, 0, 2); /* sprite_enable==off */ |
1201 |
|
} |
1202 |
|
else |
1203 |
|
BitstreamPutBit(bs, 0); /* sprite_enable==off */ |
1204 |
|
|
1205 |
|
BitstreamPutBit(bs, 0); /* not_8_bit */ |
1206 |
|
|
1207 |
|
/* quant_type 0=h.263 1=mpeg4(quantizer tables) */ |
1208 |
|
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT); |
1209 |
|
|
1210 |
|
if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) { |
1211 |
|
BitstreamPutBit(bs, get_intra_matrix_status()); /* load_intra_quant_mat */ |
1212 |
|
if (get_intra_matrix_status()) { |
1213 |
bs_put_matrix(bs, get_intra_matrix()); |
bs_put_matrix(bs, get_intra_matrix()); |
1214 |
} |
} |
1215 |
|
|
1216 |
BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
BitstreamPutBit(bs, get_inter_matrix_status()); /* load_inter_quant_mat */ |
1217 |
if (get_inter_matrix_status()) |
if (get_inter_matrix_status()) { |
|
{ |
|
1218 |
bs_put_matrix(bs, get_inter_matrix()); |
bs_put_matrix(bs, get_inter_matrix()); |
1219 |
} |
} |
1220 |
|
|
1221 |
} |
} |
1222 |
|
|
1223 |
BitstreamPutBit(bs, 1); // complexity_estimation_disable |
if (vol_ver_id != 1) { |
1224 |
BitstreamPutBit(bs, 1); // resync_marker_disable |
if ((pParam->vol_flags & XVID_VOL_QUARTERPEL)) |
1225 |
BitstreamPutBit(bs, 0); // data_partitioned |
BitstreamPutBit(bs, 1); /* quarterpel */ |
1226 |
BitstreamPutBit(bs, 0); // scalability |
else |
1227 |
|
BitstreamPutBit(bs, 0); /* no quarterpel */ |
1228 |
|
} |
1229 |
|
|
1230 |
|
BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
1231 |
|
BitstreamPutBit(bs, 1); /* resync_marker_disable */ |
1232 |
|
BitstreamPutBit(bs, 0); /* data_partitioned */ |
1233 |
|
|
1234 |
|
if (vol_ver_id != 1) |
1235 |
|
{ |
1236 |
|
BitstreamPutBit(bs, 0); /* newpred_enable */ |
1237 |
|
|
1238 |
|
BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0); |
1239 |
|
/* reduced_resolution_vop_enabled */ |
1240 |
|
} |
1241 |
|
|
1242 |
|
BitstreamPutBit(bs, 0); /* scalability */ |
1243 |
|
|
1244 |
|
/* fake divx5 id, to ensure compatibility with divx5 decoder */ |
1245 |
|
#define DIVX5_ID "DivX000b000p" |
1246 |
|
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) { |
1247 |
|
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
1248 |
|
} |
1249 |
|
|
1250 |
|
/* xvid id */ |
1251 |
|
#define XVID_ID "XviD" XVID_BS_VERSION |
1252 |
|
BitstreamWriteUserData(bs, XVID_ID, strlen(XVID_ID)); |
1253 |
} |
} |
1254 |
|
|
1255 |
|
|
1256 |
/* |
/* |
1257 |
write vop header |
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) |
|
1258 |
*/ |
*/ |
1259 |
void BitstreamWriteVopHeader(Bitstream * const bs, |
void |
1260 |
|
BitstreamWriteVopHeader( |
1261 |
|
Bitstream * const bs, |
1262 |
const MBParam * pParam, |
const MBParam * pParam, |
1263 |
const FRAMEINFO * frame) |
const FRAMEINFO * const frame, |
1264 |
|
int vop_coded) |
1265 |
{ |
{ |
|
#ifdef BFRAMES |
|
1266 |
uint32_t i; |
uint32_t i; |
1267 |
#endif |
|
1268 |
|
#if 0 |
1269 |
BitstreamPad(bs); |
BitstreamPad(bs); |
1270 |
|
#endif |
1271 |
|
|
1272 |
|
/* |
1273 |
|
* no padding here, anymore. You have to make sure that you are |
1274 |
|
* byte aligned, and that always 1-8 padding bits have been written |
1275 |
|
*/ |
1276 |
|
|
1277 |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
1278 |
|
|
1279 |
BitstreamPutBits(bs, frame->coding_type, 2); |
BitstreamPutBits(bs, frame->coding_type, 2); |
1280 |
|
#if 0 |
1281 |
|
DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i\n", frame->coding_type); |
1282 |
|
#endif |
1283 |
|
|
1284 |
// time_base = 0 write n x PutBit(1), PutBit(0) |
for (i = 0; i < frame->seconds; i++) { |
|
#ifdef BFRAMES |
|
|
for (i = 0; i < frame->seconds; i++) |
|
|
{ |
|
1285 |
BitstreamPutBit(bs, 1); |
BitstreamPutBit(bs, 1); |
1286 |
} |
} |
1287 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 0); |
|
#else |
|
|
BitstreamPutBits(bs, 0, 1); |
|
|
#endif |
|
1288 |
|
|
1289 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1290 |
|
|
1291 |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
/* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
1292 |
#ifdef BFRAMES |
|
1293 |
BitstreamPutBits(bs, frame->ticks, 5); |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
1294 |
dprintf("[%i:%i] %c\n", frame->seconds, frame->ticks, frame->coding_type == I_VOP ? 'I' : frame->coding_type == P_VOP ? 'P' : 'B'); |
#if 0 |
1295 |
#else |
DPRINTF("[%i:%i] %c", |
1296 |
BitstreamPutBits(bs, 1, 1); |
frame->seconds, frame->ticks, |
1297 |
|
frame->coding_type == I_VOP ? 'I' : |
1298 |
|
frame->coding_type == P_VOP ? 'P' : |
1299 |
|
frame->coding_type == S_VOP ? 'S' : 'B'); |
1300 |
#endif |
#endif |
1301 |
|
|
1302 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1303 |
|
|
1304 |
BitstreamPutBits(bs, 1, 1); // vop_coded |
if (!vop_coded) { |
1305 |
|
BitstreamPutBits(bs, 0, 1); |
1306 |
|
return; |
1307 |
|
} |
1308 |
|
|
1309 |
if (frame->coding_type != I_VOP) |
BitstreamPutBits(bs, 1, 1); /* vop_coded */ |
1310 |
|
|
1311 |
|
if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1312 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
1313 |
|
|
1314 |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
1315 |
|
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_REDUCED)?1:0); |
1316 |
|
|
1317 |
|
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
1318 |
|
|
1319 |
if (frame->global_flags & XVID_INTERLACING) |
if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
1320 |
|
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST)); |
1321 |
|
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN)); |
1322 |
|
} |
1323 |
|
|
1324 |
|
if (frame->coding_type == S_VOP) { |
1325 |
|
if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */ |
1326 |
|
int k; |
1327 |
|
for (k=0;k<2;k++) |
1328 |
|
{ |
1329 |
|
bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */ |
1330 |
|
WRITE_MARKER(); |
1331 |
|
|
1332 |
|
bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); /* dv[k] */ |
1333 |
|
WRITE_MARKER(); |
1334 |
|
|
1335 |
|
if ((frame->vol_flags & XVID_VOL_QUARTERPEL)) |
1336 |
{ |
{ |
1337 |
BitstreamPutBit(bs, 1); // top field first |
DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i) *QPEL*\n", k, frame->warp.duv[k].x/2, frame->warp.duv[k].y/2); |
1338 |
BitstreamPutBit(bs, 0); // alternate vertical scan |
} |
1339 |
|
else |
1340 |
|
{ |
1341 |
|
DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", k, frame->warp.duv[k].x, frame->warp.duv[k].y); |
1342 |
|
} |
1343 |
|
} |
1344 |
|
} |
1345 |
} |
} |
1346 |
|
|
1347 |
BitstreamPutBits(bs, frame->quant, 5); // quantizer |
|
1348 |
|
#if 0 |
1349 |
|
DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", frame->quant); |
1350 |
|
#endif |
1351 |
|
|
1352 |
|
BitstreamPutBits(bs, frame->quant, 5); /* quantizer */ |
1353 |
|
|
1354 |
if (frame->coding_type != I_VOP) |
if (frame->coding_type != I_VOP) |
1355 |
BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code |
BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |
1356 |
|
|
1357 |
if (frame->coding_type == B_VOP) |
if (frame->coding_type == B_VOP) |
1358 |
BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ |
1359 |
|
|
1360 |
|
} |
1361 |
|
|
1362 |
|
void |
1363 |
|
BitstreamWriteUserData(Bitstream * const bs, |
1364 |
|
uint8_t * data, |
1365 |
|
const int length) |
1366 |
|
{ |
1367 |
|
int i; |
1368 |
|
|
1369 |
|
BitstreamPad(bs); |
1370 |
|
BitstreamPutBits(bs, USERDATA_START_CODE, 32); |
1371 |
|
|
1372 |
|
for (i = 0; i < length; i++) { |
1373 |
|
BitstreamPutBits(bs, data[i], 8); |
1374 |
|
} |
1375 |
|
|
1376 |
} |
} |