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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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* 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 const uint8_t log2_tab_16[16] = { 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4 }; |
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static uint32_t __inline log2bin(uint32_t value) |
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{ |
{ |
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/* Changed by Chenm001 */ |
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#ifndef WIN32 |
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int n = 0; |
int n = 0; |
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while (value) |
if (value & 0xffff0000) { |
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{ |
value >>= 16; |
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value >>= 1; |
n += 16; |
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n++; |
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} |
} |
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return n; |
if (value & 0xff00) { |
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#else |
value >>= 8; |
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__asm{ |
n += 8; |
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bsr eax,value |
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inc eax |
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} |
} |
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#endif |
if (value & 0xf0) { |
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value >>= 4; |
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n += 4; |
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} |
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return n + log2_tab_16[value]; |
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} |
} |
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static const uint32_t intra_dc_threshold_table[] = { |
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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) |
static 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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while (i < 64) |
if (value != 0) return; |
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{ |
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i--; |
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while (i < 64) { |
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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, 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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uint32_t time_inc_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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READ_MARKER(); |
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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 = (mbnum_bits == 0) ? 0 : BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
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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 (start_code == VISOBJSEQ_START_CODE) |
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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// DEBUG("visual_object_sequence"); |
int time_base; |
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BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
int time_increment; |
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BitstreamSkip(bs, 8); // profile_and_level_indication |
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 (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
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{ |
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BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
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if (coding_type != I_VOP) |
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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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*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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BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
/* 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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} |
} |
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if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type |
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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// video_signal_type |
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if (BitstreamGetBit(bs)) // video_signal_type |
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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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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 (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 */ |
| 255 |
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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 */ |
| 260 |
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{ |
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e->apm = BitstreamGetBit(bs); /* apm */ |
| 262 |
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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 */ |
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e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */ |
| 267 |
} |
} |
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else if ((start_code & ~0xf) == VIDOBJLAY_START_CODE) |
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READ_MARKER(); |
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if (e->method == 1) |
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{ |
{ |
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// DEBUG("video_object_layer"); |
if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */ |
| 274 |
BitstreamSkip(bs, 32); // video_object_layer_start_code |
{ |
| 275 |
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e->sadct = BitstreamGetBit(bs); /* sadct */ |
| 276 |
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e->quarterpel = BitstreamGetBit(bs); /* quarterpel */ |
| 277 |
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} |
| 278 |
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} |
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} |
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/* vop estimation header */ |
| 283 |
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static void |
| 284 |
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read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type) |
| 285 |
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{ |
| 286 |
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ESTIMATION * e = &dec->estimation; |
| 287 |
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| 288 |
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if (e->method == 0 || e->method == 1) |
| 289 |
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{ |
| 290 |
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if (coding_type == I_VOP) { |
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if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */ |
| 292 |
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if (e->transparent) BitstreamSkip(bs, 8); /* */ |
| 293 |
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if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
| 294 |
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if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
| 295 |
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if (e->no_update) BitstreamSkip(bs, 8); /* */ |
| 296 |
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if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
| 297 |
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if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
| 298 |
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if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
| 299 |
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if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
| 300 |
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if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
| 301 |
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if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
| 302 |
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if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
| 303 |
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if (e->sadct) BitstreamSkip(bs, 8); /* */ |
| 304 |
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} |
| 305 |
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| 306 |
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if (coding_type == P_VOP) { |
| 307 |
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if (e->opaque) BitstreamSkip(bs, 8); /* */ |
| 308 |
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if (e->transparent) BitstreamSkip(bs, 8); /* */ |
| 309 |
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if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
| 310 |
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if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
| 311 |
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if (e->no_update) BitstreamSkip(bs, 8); /* */ |
| 312 |
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if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
| 313 |
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if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
| 314 |
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if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
| 315 |
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if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
| 316 |
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if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
| 317 |
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if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
| 318 |
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if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
| 319 |
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if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ |
| 320 |
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if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ |
| 321 |
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if (e->apm) BitstreamSkip(bs, 8); /* */ |
| 322 |
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if (e->npm) BitstreamSkip(bs, 8); /* */ |
| 323 |
|
if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ |
| 324 |
|
if (e->halfpel2) BitstreamSkip(bs, 8); /* */ |
| 325 |
|
if (e->halfpel4) BitstreamSkip(bs, 8); /* */ |
| 326 |
|
if (e->sadct) BitstreamSkip(bs, 8); /* */ |
| 327 |
|
if (e->quarterpel) BitstreamSkip(bs, 8); /* */ |
| 328 |
|
} |
| 329 |
|
if (coding_type == B_VOP) { |
| 330 |
|
if (e->opaque) BitstreamSkip(bs, 8); /* */ |
| 331 |
|
if (e->transparent) BitstreamSkip(bs, 8); /* */ |
| 332 |
|
if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
| 333 |
|
if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
| 334 |
|
if (e->no_update) BitstreamSkip(bs, 8); /* */ |
| 335 |
|
if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
| 336 |
|
if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
| 337 |
|
if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
| 338 |
|
if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
| 339 |
|
if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
| 340 |
|
if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
| 341 |
|
if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
| 342 |
|
if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ |
| 343 |
|
if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ |
| 344 |
|
if (e->apm) BitstreamSkip(bs, 8); /* */ |
| 345 |
|
if (e->npm) BitstreamSkip(bs, 8); /* */ |
| 346 |
|
if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ |
| 347 |
|
if (e->halfpel2) BitstreamSkip(bs, 8); /* */ |
| 348 |
|
if (e->halfpel4) BitstreamSkip(bs, 8); /* */ |
| 349 |
|
if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ |
| 350 |
|
if (e->sadct) BitstreamSkip(bs, 8); /* */ |
| 351 |
|
if (e->quarterpel) BitstreamSkip(bs, 8); /* */ |
| 352 |
|
} |
| 353 |
|
|
| 354 |
|
if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) { |
| 355 |
|
if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
| 356 |
|
if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
| 357 |
|
if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
| 358 |
|
if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
| 359 |
|
if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
| 360 |
|
if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
| 361 |
|
if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ |
| 362 |
|
if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ |
| 363 |
|
if (e->apm) BitstreamSkip(bs, 8); /* */ |
| 364 |
|
if (e->npm) BitstreamSkip(bs, 8); /* */ |
| 365 |
|
if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ |
| 366 |
|
if (e->halfpel2) BitstreamSkip(bs, 8); /* */ |
| 367 |
|
if (e->halfpel4) BitstreamSkip(bs, 8); /* */ |
| 368 |
|
if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ |
| 369 |
|
} |
| 370 |
|
} |
| 371 |
|
} |
| 372 |
|
|
| 373 |
|
|
| 374 |
|
|
| 375 |
|
|
|
BitstreamSkip(bs, 1); // random_accessible_vol |
|
| 376 |
|
|
| 377 |
// video_object_type_indication |
/* |
| 378 |
if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && |
decode headers |
| 379 |
BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && |
returns coding_type, or -1 if error |
| 380 |
BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && |
*/ |
| 381 |
BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX |
|
| 382 |
|
#define VIDOBJ_START_CODE_MASK 0x0000001f |
| 383 |
|
#define VIDOBJLAY_START_CODE_MASK 0x0000000f |
| 384 |
|
|
| 385 |
|
int |
| 386 |
|
BitstreamReadHeaders(Bitstream * bs, |
| 387 |
|
DECODER * dec, |
| 388 |
|
uint32_t * rounding, |
| 389 |
|
uint32_t * quant, |
| 390 |
|
uint32_t * fcode_forward, |
| 391 |
|
uint32_t * fcode_backward, |
| 392 |
|
uint32_t * intra_dc_threshold, |
| 393 |
|
WARPPOINTS *gmc_warp) |
| 394 |
{ |
{ |
| 395 |
DEBUG1("video_object_type_indication not supported", BitstreamShowBits(bs, 8)); |
uint32_t vol_ver_id; |
| 396 |
|
uint32_t coding_type; |
| 397 |
|
uint32_t start_code; |
| 398 |
|
uint32_t time_incr = 0; |
| 399 |
|
int32_t time_increment = 0; |
| 400 |
|
int resize = 0; |
| 401 |
|
|
| 402 |
|
while ((BitstreamPos(bs) >> 3) + 4 <= bs->length) { |
| 403 |
|
|
| 404 |
|
BitstreamByteAlign(bs); |
| 405 |
|
start_code = BitstreamShowBits(bs, 32); |
| 406 |
|
|
| 407 |
|
if (start_code == VISOBJSEQ_START_CODE) { |
| 408 |
|
|
| 409 |
|
int profile; |
| 410 |
|
|
| 411 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>\n"); |
| 412 |
|
|
| 413 |
|
BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */ |
| 414 |
|
profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */ |
| 415 |
|
|
| 416 |
|
DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i\n", profile); |
| 417 |
|
|
| 418 |
|
} else if (start_code == VISOBJSEQ_STOP_CODE) { |
| 419 |
|
|
| 420 |
|
BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */ |
| 421 |
|
|
| 422 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
| 423 |
|
|
| 424 |
|
} else if (start_code == VISOBJ_START_CODE) { |
| 425 |
|
|
| 426 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
| 427 |
|
|
| 428 |
|
BitstreamSkip(bs, 32); /* visual_object_start_code */ |
| 429 |
|
if (BitstreamGetBit(bs)) /* is_visual_object_identified */ |
| 430 |
|
{ |
| 431 |
|
dec->ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
| 432 |
|
DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", dec->ver_id); |
| 433 |
|
BitstreamSkip(bs, 3); /* visual_object_priority */ |
| 434 |
|
} else { |
| 435 |
|
dec->ver_id = 1; |
| 436 |
|
} |
| 437 |
|
|
| 438 |
|
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
| 439 |
|
{ |
| 440 |
|
DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video\n"); |
| 441 |
return -1; |
return -1; |
| 442 |
} |
} |
| 443 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 4); |
| 444 |
|
|
| 445 |
|
/* video_signal_type */ |
| 446 |
|
|
| 447 |
if (BitstreamGetBit(bs)) // is_object_layer_identifier |
if (BitstreamGetBit(bs)) /* video_signal_type */ |
| 448 |
|
{ |
| 449 |
|
DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type\n"); |
| 450 |
|
BitstreamSkip(bs, 3); /* video_format */ |
| 451 |
|
BitstreamSkip(bs, 1); /* video_range */ |
| 452 |
|
if (BitstreamGetBit(bs)) /* color_description */ |
| 453 |
{ |
{ |
| 454 |
DEBUG("+ is_object_layer_identifier"); |
DPRINTF(XVID_DEBUG_HEADER,"+ color_description"); |
| 455 |
vol_ver_id = BitstreamGetBits(bs,4); // video_object_layer_verid |
BitstreamSkip(bs, 8); /* color_primaries */ |
| 456 |
BitstreamSkip(bs, 3); // video_object_layer_priority |
BitstreamSkip(bs, 8); /* transfer_characteristics */ |
| 457 |
|
BitstreamSkip(bs, 8); /* matrix_coefficients */ |
| 458 |
} |
} |
| 459 |
else |
} |
| 460 |
|
} else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
| 461 |
|
|
| 462 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>\n"); |
| 463 |
|
DPRINTF(XVID_DEBUG_HEADER, "vo id %i\n", start_code & VIDOBJ_START_CODE_MASK); |
| 464 |
|
|
| 465 |
|
BitstreamSkip(bs, 32); /* video_object_start_code */ |
| 466 |
|
|
| 467 |
|
} else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { |
| 468 |
|
|
| 469 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>\n"); |
| 470 |
|
DPRINTF(XVID_DEBUG_HEADER, "vol id %i\n", start_code & VIDOBJLAY_START_CODE_MASK); |
| 471 |
|
|
| 472 |
|
BitstreamSkip(bs, 32); /* video_object_layer_start_code */ |
| 473 |
|
BitstreamSkip(bs, 1); /* random_accessible_vol */ |
| 474 |
|
|
| 475 |
|
BitstreamSkip(bs, 8); /* video_object_type_indication */ |
| 476 |
|
|
| 477 |
|
if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ |
| 478 |
{ |
{ |
| 479 |
vol_ver_id = 1; |
DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier\n"); |
| 480 |
|
vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */ |
| 481 |
|
DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); |
| 482 |
|
BitstreamSkip(bs, 3); /* video_object_layer_priority */ |
| 483 |
|
} else { |
| 484 |
|
vol_ver_id = dec->ver_id; |
| 485 |
} |
} |
|
//DEBUGI("vol_ver_id", vol_ver_id); |
|
| 486 |
|
|
| 487 |
if (BitstreamGetBits(bs, 4) == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info |
dec->aspect_ratio = BitstreamGetBits(bs, 4); |
| 488 |
|
|
| 489 |
|
if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ |
| 490 |
{ |
{ |
| 491 |
DEBUG("+ aspect_ratio_info"); |
DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info\n"); |
| 492 |
BitstreamSkip(bs, 8); // par_width |
dec->par_width = BitstreamGetBits(bs, 8); /* par_width */ |
| 493 |
BitstreamSkip(bs, 8); // par_height |
dec->par_height = BitstreamGetBits(bs, 8); /* par_height */ |
| 494 |
} |
} |
| 495 |
|
|
| 496 |
if (BitstreamGetBit(bs)) // vol_control_parameters |
if (BitstreamGetBit(bs)) /* vol_control_parameters */ |
| 497 |
{ |
{ |
| 498 |
DEBUG("+ vol_control_parameters"); |
DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters\n"); |
| 499 |
BitstreamSkip(bs, 2); // chroma_format |
BitstreamSkip(bs, 2); /* chroma_format */ |
| 500 |
BitstreamSkip(bs, 1); // low_delay |
dec->low_delay = BitstreamGetBit(bs); /* low_delay */ |
| 501 |
if (BitstreamGetBit(bs)) // vbv_parameters |
DPRINTF(XVID_DEBUG_HEADER, "low_delay %i\n", dec->low_delay); |
| 502 |
|
if (BitstreamGetBit(bs)) /* vbv_parameters */ |
| 503 |
{ |
{ |
| 504 |
DEBUG("+ vbv_parameters"); |
unsigned int bitrate; |
| 505 |
BitstreamSkip(bs, 15); // first_half_bitrate |
unsigned int buffer_size; |
| 506 |
|
unsigned int occupancy; |
| 507 |
|
|
| 508 |
|
DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters\n"); |
| 509 |
|
|
| 510 |
|
bitrate = BitstreamGetBits(bs,15) << 15; /* first_half_bit_rate */ |
| 511 |
READ_MARKER(); |
READ_MARKER(); |
| 512 |
BitstreamSkip(bs, 15); // latter_half_bitrate |
bitrate |= BitstreamGetBits(bs,15); /* latter_half_bit_rate */ |
| 513 |
READ_MARKER(); |
READ_MARKER(); |
| 514 |
BitstreamSkip(bs, 15); // first_half_vbv_buffer_size |
|
| 515 |
|
buffer_size = BitstreamGetBits(bs, 15) << 3; /* first_half_vbv_buffer_size */ |
| 516 |
READ_MARKER(); |
READ_MARKER(); |
| 517 |
BitstreamSkip(bs, 3); // latter_half_vbv_buffer_size |
buffer_size |= BitstreamGetBits(bs, 3); /* latter_half_vbv_buffer_size */ |
| 518 |
BitstreamSkip(bs, 11); // first_half_vbv_occupancy |
|
| 519 |
|
occupancy = BitstreamGetBits(bs, 11) << 15; /* first_half_vbv_occupancy */ |
| 520 |
READ_MARKER(); |
READ_MARKER(); |
| 521 |
BitstreamSkip(bs, 15); // latter_half_vbv_occupancy |
occupancy |= BitstreamGetBits(bs, 15); /* latter_half_vbv_occupancy */ |
| 522 |
READ_MARKER(); |
READ_MARKER(); |
| 523 |
|
|
| 524 |
|
DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)\n", bitrate); |
| 525 |
|
DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)\n", buffer_size); |
| 526 |
|
DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)\n", occupancy); |
| 527 |
} |
} |
| 528 |
|
}else{ |
| 529 |
|
dec->low_delay = dec->low_delay_default; |
| 530 |
} |
} |
| 531 |
|
|
| 532 |
dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape |
dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ |
|
// DEBUG1("shape", dec->shape); |
|
| 533 |
|
|
| 534 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) |
DPRINTF(XVID_DEBUG_HEADER, "shape %i\n", dec->shape); |
| 535 |
|
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
| 536 |
{ |
{ |
| 537 |
BitstreamSkip(bs, 4); // video_object_layer_shape_extension |
DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported\n"); |
| 538 |
} |
} |
| 539 |
|
|
| 540 |
READ_MARKER(); |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { |
| 541 |
|
BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ |
|
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); |
|
| 542 |
} |
} |
|
else |
|
|
{ |
|
|
// dec->time_inc_bits = 0; |
|
| 543 |
|
|
| 544 |
// for "old" xvid compatibility, set time_inc_bits = 1 |
READ_MARKER(); |
| 545 |
|
|
| 546 |
|
/********************** for decode B-frame time ***********************/ |
| 547 |
|
dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ |
| 548 |
|
DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution); |
| 549 |
|
|
| 550 |
|
if (dec->time_inc_resolution > 0) { |
| 551 |
|
dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
| 552 |
|
} else { |
| 553 |
|
/* for "old" xvid compatibility, set time_inc_bits = 1 */ |
| 554 |
dec->time_inc_bits = 1; |
dec->time_inc_bits = 1; |
| 555 |
} |
} |
| 556 |
|
|
| 557 |
READ_MARKER(); |
READ_MARKER(); |
| 558 |
|
|
| 559 |
if (BitstreamGetBit(bs)) // fixed_vop_rate |
if (BitstreamGetBit(bs)) /* fixed_vop_rate */ |
| 560 |
{ |
{ |
| 561 |
BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate\n"); |
| 562 |
|
BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ |
| 563 |
} |
} |
| 564 |
|
|
| 565 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
|
{ |
|
| 566 |
|
|
| 567 |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
|
{ |
|
| 568 |
uint32_t width, height; |
uint32_t width, height; |
| 569 |
|
|
| 570 |
READ_MARKER(); |
READ_MARKER(); |
| 571 |
width = BitstreamGetBits(bs, 13); // video_object_layer_width |
width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ |
|
//DEBUGI("width", width); |
|
| 572 |
READ_MARKER(); |
READ_MARKER(); |
| 573 |
height = BitstreamGetBits(bs, 13); // video_object_layer_height |
height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ |
|
//DEBUGI("height", height); |
|
| 574 |
READ_MARKER(); |
READ_MARKER(); |
| 575 |
|
|
| 576 |
if (width != dec->width || height != dec->height) |
DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
| 577 |
|
DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); |
| 578 |
|
|
| 579 |
|
if (dec->width != width || dec->height != height) |
| 580 |
{ |
{ |
| 581 |
DEBUG("FATAL: video dimension discrepancy ***"); |
if (dec->fixed_dimensions) |
| 582 |
DEBUG2("bitstream width/height", width, height); |
{ |
| 583 |
DEBUG2("param width/height", dec->width, dec->height); |
DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream\n"); |
| 584 |
return -1; |
return -1; |
| 585 |
} |
} |
| 586 |
|
resize = 1; |
| 587 |
|
dec->width = width; |
| 588 |
|
dec->height = height; |
| 589 |
|
} |
| 590 |
} |
} |
| 591 |
|
|
| 592 |
if ((dec->interlacing = BitstreamGetBit(bs))) |
dec->interlacing = BitstreamGetBit(bs); |
| 593 |
|
DPRINTF(XVID_DEBUG_HEADER, "interlacing %i\n", dec->interlacing); |
| 594 |
|
|
| 595 |
|
if (!BitstreamGetBit(bs)) /* obmc_disable */ |
| 596 |
{ |
{ |
| 597 |
DEBUG("vol: interlacing"); |
DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported\n"); |
| 598 |
|
/* TODO */ |
| 599 |
|
/* fucking divx4.02 has this enabled */ |
| 600 |
} |
} |
| 601 |
|
|
| 602 |
if (!BitstreamGetBit(bs)) // obmc_disable |
dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); /* sprite_enable */ |
| 603 |
|
|
| 604 |
|
if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) |
| 605 |
{ |
{ |
| 606 |
DEBUG("IGNORED/TODO: !obmc_disable"); |
int low_latency_sprite_enable; |
|
// TODO |
|
|
// fucking divx4.02 has this enabled |
|
|
} |
|
| 607 |
|
|
| 608 |
if (BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2))) // sprite_enable |
if (dec->sprite_enable != SPRITE_GMC) |
| 609 |
{ |
{ |
| 610 |
DEBUG("sprite_enable; not supported"); |
int sprite_width; |
| 611 |
return -1; |
int sprite_height; |
| 612 |
|
int sprite_left_coord; |
| 613 |
|
int sprite_top_coord; |
| 614 |
|
sprite_width = BitstreamGetBits(bs, 13); /* sprite_width */ |
| 615 |
|
READ_MARKER(); |
| 616 |
|
sprite_height = BitstreamGetBits(bs, 13); /* sprite_height */ |
| 617 |
|
READ_MARKER(); |
| 618 |
|
sprite_left_coord = BitstreamGetBits(bs, 13); /* sprite_left_coordinate */ |
| 619 |
|
READ_MARKER(); |
| 620 |
|
sprite_top_coord = BitstreamGetBits(bs, 13); /* sprite_top_coordinate */ |
| 621 |
|
READ_MARKER(); |
| 622 |
} |
} |
| 623 |
|
dec->sprite_warping_points = BitstreamGetBits(bs, 6); /* no_of_sprite_warping_points */ |
| 624 |
if (vol_ver_id != 1 && dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); /* sprite_warping_accuracy */ |
| 625 |
|
dec->sprite_brightness_change = BitstreamGetBits(bs, 1); /* brightness_change */ |
| 626 |
|
if (dec->sprite_enable != SPRITE_GMC) |
| 627 |
{ |
{ |
| 628 |
BitstreamSkip(bs, 1); // sadct_disable |
low_latency_sprite_enable = BitstreamGetBits(bs, 1); /* low_latency_sprite_enable */ |
| 629 |
|
} |
| 630 |
} |
} |
| 631 |
|
|
| 632 |
if (BitstreamGetBit(bs)) // not_8_bit |
if (vol_ver_id != 1 && |
| 633 |
{ |
dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
| 634 |
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 |
|
| 635 |
} |
} |
| 636 |
else |
|
| 637 |
|
if (BitstreamGetBit(bs)) /* not_8_bit */ |
| 638 |
{ |
{ |
| 639 |
|
DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)\n"); |
| 640 |
|
dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */ |
| 641 |
|
BitstreamSkip(bs, 4); /* bits_per_pixel */ |
| 642 |
|
} else { |
| 643 |
dec->quant_bits = 5; |
dec->quant_bits = 5; |
| 644 |
} |
} |
| 645 |
|
|
| 646 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
| 647 |
{ |
BitstreamSkip(bs, 1); /* no_gray_quant_update */ |
| 648 |
BitstreamSkip(bs, 1); // no_gray_quant_update |
BitstreamSkip(bs, 1); /* composition_method */ |
| 649 |
BitstreamSkip(bs, 1); // composition_method |
BitstreamSkip(bs, 1); /* linear_composition */ |
|
BitstreamSkip(bs, 1); // linear_composition |
|
| 650 |
} |
} |
| 651 |
|
|
| 652 |
dec->quant_type = BitstreamGetBit(bs); // quant_type |
dec->quant_type = BitstreamGetBit(bs); /* quant_type */ |
| 653 |
// DEBUG1("**** quant_type", dec->quant_type); |
DPRINTF(XVID_DEBUG_HEADER, "quant_type %i\n", dec->quant_type); |
| 654 |
|
|
| 655 |
if (dec->quant_type) |
if (dec->quant_type) { |
| 656 |
{ |
if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ |
|
if (BitstreamGetBit(bs)) // load_intra_quant_mat |
|
| 657 |
{ |
{ |
| 658 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
| 659 |
|
|
| 660 |
|
DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n"); |
| 661 |
|
|
| 662 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
| 663 |
set_intra_matrix(matrix); |
set_intra_matrix(dec->mpeg_quant_matrices, matrix); |
| 664 |
} |
} else |
| 665 |
else |
set_intra_matrix(dec->mpeg_quant_matrices, get_default_intra_matrix()); |
|
set_intra_matrix(get_default_intra_matrix()); |
|
| 666 |
|
|
| 667 |
if (BitstreamGetBit(bs)) // load_inter_quant_mat |
if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
| 668 |
{ |
{ |
| 669 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
| 670 |
|
|
| 671 |
|
DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n"); |
| 672 |
|
|
| 673 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
| 674 |
set_inter_matrix(matrix); |
set_inter_matrix(dec->mpeg_quant_matrices, matrix); |
| 675 |
} |
} else |
| 676 |
else |
set_inter_matrix(dec->mpeg_quant_matrices, get_default_inter_matrix()); |
|
set_inter_matrix(get_default_inter_matrix()); |
|
| 677 |
|
|
| 678 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
| 679 |
{ |
DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n"); |
|
// TODO |
|
|
DEBUG("TODO: grayscale matrix stuff"); |
|
| 680 |
return -1; |
return -1; |
| 681 |
} |
} |
| 682 |
|
|
| 683 |
} |
} |
| 684 |
|
|
| 685 |
|
|
| 686 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
| 687 |
{ |
dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ |
| 688 |
dec->quarterpel = BitstreamGetBit(bs); // quarter_sampe |
DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i\n", dec->quarterpel); |
|
if (dec->quarterpel) |
|
|
{ |
|
|
DEBUG("IGNORED/TODO: quarter_sample"); |
|
|
} |
|
| 689 |
} |
} |
| 690 |
else |
else |
|
{ |
|
| 691 |
dec->quarterpel = 0; |
dec->quarterpel = 0; |
|
} |
|
| 692 |
|
|
|
if (!BitstreamGetBit(bs)) // complexity_estimation_disable |
|
|
{ |
|
|
DEBUG("TODO: complexity_estimation header"); |
|
|
// TODO |
|
|
return -1; |
|
|
} |
|
| 693 |
|
|
| 694 |
if (!BitstreamGetBit(bs)) // resync_marker_disable |
dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */ |
| 695 |
|
if (!dec->complexity_estimation_disable) |
| 696 |
{ |
{ |
| 697 |
DEBUG("IGNORED/TODO: !resync_marker_disable"); |
read_vol_complexity_estimation_header(bs, dec); |
|
// TODO |
|
| 698 |
} |
} |
| 699 |
|
|
| 700 |
if (BitstreamGetBit(bs)) // data_partitioned |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
| 701 |
|
|
| 702 |
|
if (BitstreamGetBit(bs)) /* data_partitioned */ |
| 703 |
{ |
{ |
| 704 |
DEBUG("+ data_partitioned"); |
DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported\n"); |
| 705 |
BitstreamSkip(bs, 1); // reversible_vlc |
BitstreamSkip(bs, 1); /* reversible_vlc */ |
| 706 |
} |
} |
| 707 |
|
|
| 708 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
| 709 |
{ |
dec->newpred_enable = BitstreamGetBit(bs); |
| 710 |
if (BitstreamGetBit(bs)) // newpred_enable |
if (dec->newpred_enable) /* newpred_enable */ |
| 711 |
{ |
{ |
| 712 |
DEBUG("+ newpred_enable"); |
DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable\n"); |
| 713 |
BitstreamSkip(bs, 2); // requested_upstream_message_type |
BitstreamSkip(bs, 2); /* requested_upstream_message_type */ |
| 714 |
BitstreamSkip(bs, 1); // newpred_segment_type |
BitstreamSkip(bs, 1); /* newpred_segment_type */ |
| 715 |
} |
} |
| 716 |
if (BitstreamGetBit(bs)) // reduced_resolution_vop_enable |
dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */ |
| 717 |
{ |
DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i\n", dec->reduced_resolution_enable); |
|
DEBUG("TODO: reduced_resolution_vop_enable"); |
|
|
// TODO |
|
|
return -1; |
|
| 718 |
} |
} |
| 719 |
|
else |
| 720 |
|
{ |
| 721 |
|
dec->newpred_enable = 0; |
| 722 |
|
dec->reduced_resolution_enable = 0; |
| 723 |
} |
} |
| 724 |
|
|
| 725 |
if (BitstreamGetBit(bs)) // scalability |
dec->scalability = BitstreamGetBit(bs); /* scalability */ |
| 726 |
|
if (dec->scalability) |
| 727 |
{ |
{ |
| 728 |
// TODO |
DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
| 729 |
DEBUG("TODO: scalability"); |
BitstreamSkip(bs, 1); /* hierarchy_type */ |
| 730 |
return -1; |
BitstreamSkip(bs, 4); /* ref_layer_id */ |
| 731 |
|
BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */ |
| 732 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ |
| 733 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ |
| 734 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ |
| 735 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ |
| 736 |
|
BitstreamSkip(bs, 1); /* enhancement_type */ |
| 737 |
|
if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) { |
| 738 |
|
BitstreamSkip(bs, 1); /* use_ref_shape */ |
| 739 |
|
BitstreamSkip(bs, 1); /* use_ref_texture */ |
| 740 |
|
BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */ |
| 741 |
|
BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */ |
| 742 |
|
BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */ |
| 743 |
|
BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */ |
| 744 |
} |
} |
| 745 |
|
return -1; |
| 746 |
} |
} |
| 747 |
else // dec->shape == BINARY_ONLY |
} else /* dec->shape == BINARY_ONLY */ |
|
{ |
|
|
if (vol_ver_id != 1) |
|
|
{ |
|
|
if (BitstreamGetBit(bs)) // scalability |
|
| 748 |
{ |
{ |
| 749 |
// TODO |
if (vol_ver_id != 1) { |
| 750 |
DEBUG("TODO: scalability"); |
dec->scalability = BitstreamGetBit(bs); /* scalability */ |
| 751 |
|
if (dec->scalability) |
| 752 |
|
{ |
| 753 |
|
DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
| 754 |
|
BitstreamSkip(bs, 4); /* ref_layer_id */ |
| 755 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ |
| 756 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ |
| 757 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ |
| 758 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ |
| 759 |
return -1; |
return -1; |
| 760 |
} |
} |
| 761 |
} |
} |
| 762 |
BitstreamSkip(bs, 1); // resync_marker_disable |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
| 763 |
|
|
| 764 |
} |
} |
| 765 |
|
|
| 766 |
} |
return (resize ? -3 : -2 ); /* VOL */ |
| 767 |
else if (start_code == GRPOFVOP_START_CODE) |
|
| 768 |
{ |
} else if (start_code == GRPOFVOP_START_CODE) { |
| 769 |
// DEBUG("group_of_vop"); |
|
| 770 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>\n"); |
| 771 |
|
|
| 772 |
BitstreamSkip(bs, 32); |
BitstreamSkip(bs, 32); |
| 773 |
{ |
{ |
| 774 |
int hours, minutes, seconds; |
int hours, minutes, seconds; |
| 775 |
|
|
| 776 |
hours = BitstreamGetBits(bs, 5); |
hours = BitstreamGetBits(bs, 5); |
| 777 |
minutes = BitstreamGetBits(bs, 6); |
minutes = BitstreamGetBits(bs, 6); |
| 778 |
READ_MARKER(); |
READ_MARKER(); |
| 779 |
seconds = BitstreamGetBits(bs, 6); |
seconds = BitstreamGetBits(bs, 6); |
| 780 |
// DEBUG3("hms", hours, minutes, seconds); |
|
| 781 |
} |
DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is\n", hours,minutes,seconds); |
|
BitstreamSkip(bs, 1); // closed_gov |
|
|
BitstreamSkip(bs, 1); // broken_link |
|
| 782 |
} |
} |
| 783 |
else if (start_code == VOP_START_CODE) |
BitstreamSkip(bs, 1); /* closed_gov */ |
| 784 |
{ |
BitstreamSkip(bs, 1); /* broken_link */ |
| 785 |
// DEBUG("vop_start_code"); |
|
| 786 |
BitstreamSkip(bs, 32); // vop_start_code |
} else if (start_code == VOP_START_CODE) { |
| 787 |
|
|
| 788 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<vop>\n"); |
| 789 |
|
|
| 790 |
coding_type = BitstreamGetBits(bs, 2); // vop_coding_type |
BitstreamSkip(bs, 32); /* vop_start_code */ |
|
//DEBUG1("coding_type", coding_type); |
|
| 791 |
|
|
| 792 |
while (BitstreamGetBit(bs) != 0) ; // time_base |
coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */ |
| 793 |
|
DPRINTF(XVID_DEBUG_HEADER, "coding_type %i\n", coding_type); |
| 794 |
|
|
| 795 |
|
/*********************** for decode B-frame time ***********************/ |
| 796 |
|
while (BitstreamGetBit(bs) != 0) /* time_base */ |
| 797 |
|
time_incr++; |
| 798 |
|
|
| 799 |
READ_MARKER(); |
READ_MARKER(); |
| 800 |
|
|
| 801 |
//DEBUG1("time_inc_bits", dec->time_inc_bits); |
if (dec->time_inc_bits) { |
| 802 |
//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 |
|
| 803 |
} |
} |
| 804 |
|
|
| 805 |
|
DPRINTF(XVID_DEBUG_HEADER, "time_base %i\n", time_incr); |
| 806 |
|
DPRINTF(XVID_DEBUG_HEADER, "time_increment %i\n", time_increment); |
| 807 |
|
|
| 808 |
|
DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i\n", |
| 809 |
|
coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
| 810 |
|
time_incr, time_increment); |
| 811 |
|
|
| 812 |
|
if (coding_type != B_VOP) { |
| 813 |
|
dec->last_time_base = dec->time_base; |
| 814 |
|
dec->time_base += time_incr; |
| 815 |
|
dec->time = dec->time_base*dec->time_inc_resolution + time_increment; |
| 816 |
|
dec->time_pp = (int32_t)(dec->time - dec->last_non_b_time); |
| 817 |
|
dec->last_non_b_time = dec->time; |
| 818 |
|
} else { |
| 819 |
|
dec->time = (dec->last_time_base + time_incr)*dec->time_inc_resolution + time_increment; |
| 820 |
|
dec->time_bp = dec->time_pp - (int32_t)(dec->last_non_b_time - dec->time); |
| 821 |
|
} |
| 822 |
|
if (dec->time_pp <= 0) dec->time_pp = 1; |
| 823 |
|
DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
| 824 |
|
DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); |
| 825 |
|
|
| 826 |
READ_MARKER(); |
READ_MARKER(); |
| 827 |
|
|
| 828 |
if (!BitstreamGetBit(bs)) // vop_coded |
if (!BitstreamGetBit(bs)) /* vop_coded */ |
| 829 |
{ |
{ |
| 830 |
|
DPRINTF(XVID_DEBUG_HEADER, "vop_coded==false\n"); |
| 831 |
return N_VOP; |
return N_VOP; |
| 832 |
} |
} |
| 833 |
|
|
| 834 |
/* if (newpred_enable) |
if (dec->newpred_enable) |
| 835 |
{ |
{ |
| 836 |
} |
int vop_id; |
| 837 |
*/ |
int vop_id_for_prediction; |
| 838 |
|
|
| 839 |
if (coding_type != I_VOP) |
vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
| 840 |
|
DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
| 841 |
|
if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
| 842 |
{ |
{ |
| 843 |
*rounding = BitstreamGetBit(bs); // rounding_type |
vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
| 844 |
//DEBUG1("rounding", *rounding); |
DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
| 845 |
|
} |
| 846 |
|
READ_MARKER(); |
| 847 |
} |
} |
| 848 |
|
|
| 849 |
/* if (reduced_resolution_enable) |
|
| 850 |
{ |
|
| 851 |
|
/* fix a little bug by MinChen <chenm002@163.com> */ |
| 852 |
|
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
| 853 |
|
( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
| 854 |
|
*rounding = BitstreamGetBit(bs); /* rounding_type */ |
| 855 |
|
DPRINTF(XVID_DEBUG_HEADER, "rounding %i\n", *rounding); |
| 856 |
} |
} |
|
*/ |
|
| 857 |
|
|
| 858 |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->reduced_resolution_enable && |
| 859 |
{ |
dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
| 860 |
|
(coding_type == P_VOP || coding_type == I_VOP)) { |
| 861 |
|
|
| 862 |
|
if (BitstreamGetBit(bs)); |
| 863 |
|
DPRINTF(XVID_DEBUG_ERROR, "RRV not supported (anymore)\n"); |
| 864 |
|
} |
| 865 |
|
|
| 866 |
|
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
| 867 |
|
if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { |
| 868 |
|
|
| 869 |
uint32_t width, height; |
uint32_t width, height; |
| 870 |
uint32_t horiz_mc_ref, vert_mc_ref; |
uint32_t horiz_mc_ref, vert_mc_ref; |
| 871 |
|
|
| 878 |
vert_mc_ref = BitstreamGetBits(bs, 13); |
vert_mc_ref = BitstreamGetBits(bs, 13); |
| 879 |
READ_MARKER(); |
READ_MARKER(); |
| 880 |
|
|
| 881 |
// DEBUG2("vop_width/height", width, height); |
DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
| 882 |
// DEBUG2("ref ", horiz_mc_ref, vert_mc_ref); |
DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); |
| 883 |
|
DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i\n", horiz_mc_ref); |
| 884 |
|
DPRINTF(XVID_DEBUG_HEADER, "vert_mc_ref %i\n", vert_mc_ref); |
| 885 |
|
} |
| 886 |
|
|
| 887 |
BitstreamSkip(bs, 1); // change_conv_ratio_disable |
BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
| 888 |
if (BitstreamGetBit(bs)) // vop_constant_alpha |
if (BitstreamGetBit(bs)) /* vop_constant_alpha */ |
| 889 |
{ |
{ |
| 890 |
BitstreamSkip(bs, 8); // vop_constant_alpha_value |
BitstreamSkip(bs, 8); /* vop_constant_alpha_value */ |
| 891 |
} |
} |
| 892 |
} |
} |
| 893 |
|
|
| 894 |
|
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
| 895 |
|
|
| 896 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (!dec->complexity_estimation_disable) |
| 897 |
{ |
{ |
| 898 |
// intra_dc_vlc_threshold |
read_vop_complexity_estimation_header(bs, dec, coding_type); |
| 899 |
*intra_dc_threshold = intra_dc_threshold_table[ BitstreamGetBits(bs,3) ]; |
} |
| 900 |
|
|
| 901 |
if (dec->interlacing) |
/* intra_dc_vlc_threshold */ |
| 902 |
{ |
*intra_dc_threshold = |
| 903 |
if ((dec->top_field_first = BitstreamGetBit(bs))) |
intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; |
| 904 |
|
|
| 905 |
|
dec->top_field_first = 0; |
| 906 |
|
dec->alternate_vertical_scan = 0; |
| 907 |
|
|
| 908 |
|
if (dec->interlacing) { |
| 909 |
|
dec->top_field_first = BitstreamGetBit(bs); |
| 910 |
|
DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i\n", dec->top_field_first); |
| 911 |
|
dec->alternate_vertical_scan = BitstreamGetBit(bs); |
| 912 |
|
DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i\n", dec->alternate_vertical_scan); |
| 913 |
|
|
| 914 |
|
} |
| 915 |
|
} |
| 916 |
|
|
| 917 |
|
if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
| 918 |
|
|
| 919 |
|
int i; |
| 920 |
|
|
| 921 |
|
for (i = 0 ; i < dec->sprite_warping_points; i++) |
| 922 |
{ |
{ |
| 923 |
DEBUG("vop: top_field_first"); |
int length; |
| 924 |
|
int x = 0, y = 0; |
| 925 |
|
|
| 926 |
|
/* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */ |
| 927 |
|
length = bs_get_spritetrajectory(bs); |
| 928 |
|
if(length){ |
| 929 |
|
x= BitstreamGetBits(bs, length); |
| 930 |
|
if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ |
| 931 |
|
x = - (x ^ ((1 << length) - 1)); |
| 932 |
|
} |
| 933 |
|
READ_MARKER(); |
| 934 |
|
|
| 935 |
|
length = bs_get_spritetrajectory(bs); |
| 936 |
|
if(length){ |
| 937 |
|
y = BitstreamGetBits(bs, length); |
| 938 |
|
if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ |
| 939 |
|
y = - (y ^ ((1 << length) - 1)); |
| 940 |
|
} |
| 941 |
|
READ_MARKER(); |
| 942 |
|
|
| 943 |
|
gmc_warp->duv[i].x = x; |
| 944 |
|
gmc_warp->duv[i].y = y; |
| 945 |
|
|
| 946 |
|
DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", i, x, y); |
| 947 |
} |
} |
| 948 |
if ((dec->alternate_vertical_scan = BitstreamGetBit(bs))) |
|
| 949 |
|
if (dec->sprite_brightness_change) |
| 950 |
{ |
{ |
| 951 |
DEBUG("vop: alternate_vertical_scan"); |
/* XXX: brightness_change_factor() */ |
| 952 |
} |
} |
| 953 |
|
if (dec->sprite_enable == SPRITE_STATIC) |
| 954 |
|
{ |
| 955 |
|
/* XXX: todo */ |
| 956 |
} |
} |
| 957 |
|
|
| 958 |
} |
} |
| 959 |
|
|
| 960 |
*quant = BitstreamGetBits(bs, dec->quant_bits); // vop_quant |
if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */ |
| 961 |
//DEBUG1("quant", *quant); |
*quant = 1; |
| 962 |
|
DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); |
| 963 |
|
|
| 964 |
if (coding_type != I_VOP) |
if (coding_type != I_VOP) { |
| 965 |
{ |
*fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */ |
| 966 |
*fcode = BitstreamGetBits(bs, 3); // fcode_forward |
DPRINTF(XVID_DEBUG_HEADER, "fcode_forward %i\n", *fcode_forward); |
| 967 |
} |
} |
| 968 |
|
|
| 969 |
if (coding_type == B_VOP) |
if (coding_type == B_VOP) { |
| 970 |
{ |
*fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */ |
| 971 |
// *fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward |
DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i\n", *fcode_backward); |
| 972 |
|
} |
| 973 |
|
if (!dec->scalability) { |
| 974 |
|
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && |
| 975 |
|
(coding_type != I_VOP)) { |
| 976 |
|
BitstreamSkip(bs, 1); /* vop_shape_coding_type */ |
| 977 |
|
} |
| 978 |
} |
} |
| 979 |
return coding_type; |
return coding_type; |
| 980 |
|
|
| 981 |
|
} else if (start_code == USERDATA_START_CODE) { |
| 982 |
|
char tmp[256]; |
| 983 |
|
int i, version, build; |
| 984 |
|
char packed; |
| 985 |
|
|
| 986 |
|
BitstreamSkip(bs, 32); /* user_data_start_code */ |
| 987 |
|
|
| 988 |
|
memset(tmp, 0, 256); |
| 989 |
|
tmp[0] = BitstreamShowBits(bs, 8); |
| 990 |
|
|
| 991 |
|
for(i = 1; i < 256; i++){ |
| 992 |
|
tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); |
| 993 |
|
|
| 994 |
|
if(tmp[i] == 0) |
| 995 |
|
break; |
| 996 |
|
|
| 997 |
|
BitstreamSkip(bs, 8); |
| 998 |
} |
} |
| 999 |
else if (start_code == USERDATA_START_CODE) |
|
| 1000 |
{ |
DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp); |
| 1001 |
// DEBUG("user_data"); |
|
| 1002 |
BitstreamSkip(bs, 32); // user_data_start_code |
/* read xvid bitstream version */ |
| 1003 |
|
if(strncmp(tmp, "XviD", 4) == 0) { |
| 1004 |
|
if (tmp[strlen(tmp)-1] == 'C') { |
| 1005 |
|
sscanf(tmp, "XviD%dC", &dec->bs_version); |
| 1006 |
|
dec->cartoon_mode = 1; |
| 1007 |
|
} |
| 1008 |
|
else |
| 1009 |
|
sscanf(tmp, "XviD%d", &dec->bs_version); |
| 1010 |
|
|
| 1011 |
|
DPRINTF(XVID_DEBUG_HEADER, "xvid bitstream version=%i\n", dec->bs_version); |
| 1012 |
} |
} |
| 1013 |
else // start_code == ? |
|
| 1014 |
|
/* divx detection */ |
| 1015 |
|
i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); |
| 1016 |
|
if (i < 2) |
| 1017 |
|
i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed); |
| 1018 |
|
|
| 1019 |
|
if (i >= 2) |
| 1020 |
{ |
{ |
| 1021 |
if (BitstreamShowBits(bs, 24) == 0x000001) |
dec->packed_mode = (i == 3 && packed == 'p'); |
| 1022 |
|
DPRINTF(XVID_DEBUG_HEADER, "divx version=%i, build=%i packed=%i\n", |
| 1023 |
|
version, build, dec->packed_mode); |
| 1024 |
|
} |
| 1025 |
|
|
| 1026 |
|
if ((dec->bs_version == 0) && (build > 0) && |
| 1027 |
|
(build != 1393)) { /* non-xvid stream with xvid fourcc */ |
| 1028 |
|
dec->bs_version = 0xffff; |
| 1029 |
|
} |
| 1030 |
|
|
| 1031 |
|
} else /* start_code == ? */ |
| 1032 |
{ |
{ |
| 1033 |
DEBUG1("*** WARNING: unknown start_code", BitstreamShowBits(bs, 32)); |
if (BitstreamShowBits(bs, 24) == 0x000001) { |
| 1034 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>\n", BitstreamShowBits(bs, 32)); |
| 1035 |
} |
} |
| 1036 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
| 1037 |
} |
} |
| 1038 |
} |
} |
|
while ((BitstreamPos(bs) >> 3) < bs->length); |
|
| 1039 |
|
|
| 1040 |
DEBUG("*** WARNING: no vop_start_code found"); |
#if 0 |
| 1041 |
|
DPRINTF("*** WARNING: no vop_start_code found"); |
| 1042 |
|
#endif |
| 1043 |
return -1; /* ignore it */ |
return -1; /* ignore it */ |
| 1044 |
} |
} |
| 1045 |
|
|
| 1046 |
|
|
| 1047 |
/* write custom quant matrix */ |
/* write custom quant matrix */ |
| 1048 |
|
|
| 1049 |
static void bs_put_matrix(Bitstream * bs, const int16_t *matrix) |
static void |
| 1050 |
|
bs_put_matrix(Bitstream * bs, |
| 1051 |
|
const uint16_t * matrix) |
| 1052 |
{ |
{ |
| 1053 |
int i, j; |
int i, j; |
| 1054 |
const int last = matrix[scan_tables[0][63]]; |
const int last = matrix[scan_tables[0][63]]; |
| 1055 |
|
|
| 1056 |
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--); |
| 1057 |
|
|
| 1058 |
for (i = 0; i <= j; i++) |
for (i = 0; i <= j; i++) { |
|
{ |
|
| 1059 |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
| 1060 |
} |
} |
| 1061 |
|
|
| 1062 |
if (j < 63) |
if (j < 63) { |
|
{ |
|
| 1063 |
BitstreamPutBits(bs, 0, 8); |
BitstreamPutBits(bs, 0, 8); |
| 1064 |
} |
} |
| 1065 |
} |
} |
| 1068 |
/* |
/* |
| 1069 |
write vol header |
write vol header |
| 1070 |
*/ |
*/ |
| 1071 |
void BitstreamWriteVolHeader(Bitstream * const bs, |
void |
| 1072 |
const MBParam * pParam, const FRAMEINFO * frame) |
BitstreamWriteVolHeader(Bitstream * const bs, |
| 1073 |
|
const MBParam * pParam, |
| 1074 |
|
const FRAMEINFO * const frame, |
| 1075 |
|
const int num_slices) |
| 1076 |
{ |
{ |
| 1077 |
// video object_start_code & vo_id |
static const unsigned int vo_id = 0; |
| 1078 |
|
static const unsigned int vol_id = 0; |
| 1079 |
|
int vol_ver_id = 1; |
| 1080 |
|
int vol_type_ind = VIDOBJLAY_TYPE_SIMPLE; |
| 1081 |
|
int vol_profile = pParam->profile; |
| 1082 |
|
|
| 1083 |
|
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
| 1084 |
|
(pParam->vol_flags & XVID_VOL_GMC)) |
| 1085 |
|
vol_ver_id = 2; |
| 1086 |
|
|
| 1087 |
|
if ((pParam->vol_flags & (XVID_VOL_MPEGQUANT|XVID_VOL_QUARTERPEL|XVID_VOL_GMC|XVID_VOL_INTERLACING)) || |
| 1088 |
|
pParam->max_bframes>0) { |
| 1089 |
|
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
| 1090 |
|
} |
| 1091 |
|
|
| 1092 |
|
/* visual_object_sequence_start_code */ |
| 1093 |
|
#if 0 |
| 1094 |
|
BitstreamPad(bs); |
| 1095 |
|
#endif |
| 1096 |
|
|
| 1097 |
|
/* |
| 1098 |
|
* no padding here, anymore. You have to make sure that you are |
| 1099 |
|
* byte aligned, and that always 1-8 padding bits have been written |
| 1100 |
|
*/ |
| 1101 |
|
|
| 1102 |
|
if (!vol_profile) { |
| 1103 |
|
/* Profile was not set by client app, use the more permissive profile |
| 1104 |
|
* compatible with the vol_type_id */ |
| 1105 |
|
switch(vol_type_ind) { |
| 1106 |
|
case VIDOBJLAY_TYPE_ASP: |
| 1107 |
|
vol_profile = 0xf5; /* ASP level 5 */ |
| 1108 |
|
break; |
| 1109 |
|
case VIDOBJLAY_TYPE_ART_SIMPLE: |
| 1110 |
|
vol_profile = 0x94; /* ARTS level 4 */ |
| 1111 |
|
break; |
| 1112 |
|
default: |
| 1113 |
|
vol_profile = 0x03; /* Simple level 3 */ |
| 1114 |
|
break; |
| 1115 |
|
} |
| 1116 |
|
} |
| 1117 |
|
|
| 1118 |
|
/* Write the VOS header */ |
| 1119 |
|
BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); |
| 1120 |
|
BitstreamPutBits(bs, vol_profile, 8); /* profile_and_level_indication */ |
| 1121 |
|
|
| 1122 |
|
|
| 1123 |
|
/* visual_object_start_code */ |
| 1124 |
BitstreamPad(bs); |
BitstreamPad(bs); |
| 1125 |
BitstreamPutBits(bs, VO_START_CODE, 27); |
BitstreamPutBits(bs, VISOBJ_START_CODE, 32); |
| 1126 |
BitstreamPutBits(bs, 0, 5); |
BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */ |
| 1127 |
|
|
| 1128 |
|
/* Video type */ |
| 1129 |
|
BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */ |
| 1130 |
|
BitstreamPutBit(bs, 0); /* video_signal_type */ |
| 1131 |
|
|
| 1132 |
|
/* video object_start_code & vo_id */ |
| 1133 |
|
BitstreamPadAlways(bs); /* next_start_code() */ |
| 1134 |
|
BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
| 1135 |
|
|
| 1136 |
|
/* video_object_layer_start_code & vol_id */ |
| 1137 |
|
BitstreamPad(bs); |
| 1138 |
|
BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32); |
| 1139 |
|
|
| 1140 |
|
BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
| 1141 |
|
BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */ |
| 1142 |
|
|
| 1143 |
|
if (vol_ver_id == 1) { |
| 1144 |
|
BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ |
| 1145 |
|
} else { |
| 1146 |
|
BitstreamPutBit(bs, 1); /* is_object_layer_identified */ |
| 1147 |
|
BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */ |
| 1148 |
|
BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==highest, 7==lowest) */ |
| 1149 |
|
} |
| 1150 |
|
|
| 1151 |
// video_object_layer_start_code & vol_id |
/* Aspect ratio */ |
| 1152 |
BitstreamPutBits(bs, VOL_START_CODE, 28); |
BitstreamPutBits(bs, pParam->par, 4); /* aspect_ratio_info (1=1:1) */ |
| 1153 |
BitstreamPutBits(bs, 0, 4); |
if(pParam->par == XVID_PAR_EXT) { |
| 1154 |
|
BitstreamPutBits(bs, pParam->par_width, 8); |
| 1155 |
BitstreamPutBit(bs, 0); // random_accessible_vol |
BitstreamPutBits(bs, pParam->par_height, 8); |
| 1156 |
BitstreamPutBits(bs, 0, 8); // video_object_type_indication |
} |
| 1157 |
BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given) |
|
| 1158 |
BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
| 1159 |
BitstreamPutBit(bs, 0); // vol_control_parameters (0=not given) |
BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ |
| 1160 |
BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
|
| 1161 |
|
if (pParam->max_bframes > 0) { |
| 1162 |
|
BitstreamPutBit(bs, 0); /* low_delay */ |
| 1163 |
|
} else |
| 1164 |
|
{ |
| 1165 |
|
BitstreamPutBit(bs, 1); /* low_delay */ |
| 1166 |
|
} |
| 1167 |
|
BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */ |
| 1168 |
|
|
| 1169 |
|
BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */ |
| 1170 |
|
|
| 1171 |
WRITE_MARKER(); |
WRITE_MARKER(); |
| 1172 |
|
|
| 1173 |
/* time_increment_resolution; ignored by current decore versions |
/* |
| 1174 |
eg. 2fps res=2 inc=1 |
* time_inc_resolution; ignored by current decore versions |
| 1175 |
25fps res=25 inc=1 |
* eg. 2fps res=2 inc=1 |
| 1176 |
29.97fps res=30000 inc=1001 |
* 25fps res=25 inc=1 |
| 1177 |
|
* 29.97fps res=30000 inc=1001 |
| 1178 |
*/ |
*/ |
| 1179 |
BitstreamPutBits(bs, 2, 16); |
BitstreamPutBits(bs, pParam->fbase, 16); |
| 1180 |
|
|
| 1181 |
WRITE_MARKER(); |
WRITE_MARKER(); |
| 1182 |
|
|
| 1183 |
// fixed_vop_rate |
if (pParam->fincr>0) { |
| 1184 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
| 1185 |
|
BitstreamPutBits(bs, pParam->fincr, MAX(log2bin(pParam->fbase-1),1)); /* fixed_vop_time_increment */ |
| 1186 |
// fixed_time_increment: value=nth_of_sec, nbits = log2(resolution) |
}else{ |
| 1187 |
// BitstreamPutBits(bs, 0, 15); |
BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ |
| 1188 |
|
} |
| 1189 |
|
|
| 1190 |
WRITE_MARKER(); |
WRITE_MARKER(); |
| 1191 |
BitstreamPutBits(bs, pParam->width, 13); // width |
BitstreamPutBits(bs, pParam->width, 13); /* width */ |
| 1192 |
WRITE_MARKER(); |
WRITE_MARKER(); |
| 1193 |
BitstreamPutBits(bs, pParam->height, 13); // height |
BitstreamPutBits(bs, pParam->height, 13); /* height */ |
| 1194 |
WRITE_MARKER(); |
WRITE_MARKER(); |
| 1195 |
|
|
| 1196 |
BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace |
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); /* interlace */ |
| 1197 |
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 |
|
| 1198 |
|
|
| 1199 |
// quant_type 0=h.263 1=mpeg4(quantizer tables) |
if (vol_ver_id != 1) |
| 1200 |
BitstreamPutBit(bs, pParam->m_quant_type); |
{ if ((pParam->vol_flags & XVID_VOL_GMC)) |
| 1201 |
|
{ BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */ |
| 1202 |
|
BitstreamPutBits(bs, 3, 6); /* no_of_sprite_warping_points */ |
| 1203 |
|
BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ |
| 1204 |
|
BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */ |
| 1205 |
|
|
| 1206 |
if (pParam->m_quant_type) |
/* |
| 1207 |
{ |
* currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 |
| 1208 |
BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
* for DivX5 compatability |
| 1209 |
if (get_intra_matrix_status()) |
*/ |
| 1210 |
{ |
|
| 1211 |
bs_put_matrix(bs, get_intra_matrix()); |
} else |
| 1212 |
|
BitstreamPutBits(bs, 0, 2); /* sprite_enable==off */ |
| 1213 |
} |
} |
| 1214 |
|
else |
| 1215 |
|
BitstreamPutBit(bs, 0); /* sprite_enable==off */ |
| 1216 |
|
|
| 1217 |
BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
BitstreamPutBit(bs, 0); /* not_8_bit */ |
| 1218 |
if (get_inter_matrix_status()) |
|
| 1219 |
{ |
/* quant_type 0=h.263 1=mpeg4(quantizer tables) */ |
| 1220 |
bs_put_matrix(bs, get_inter_matrix()); |
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT); |
| 1221 |
|
|
| 1222 |
|
if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) { |
| 1223 |
|
BitstreamPutBit(bs, is_custom_intra_matrix(pParam->mpeg_quant_matrices)); /* load_intra_quant_mat */ |
| 1224 |
|
if(is_custom_intra_matrix(pParam->mpeg_quant_matrices)) |
| 1225 |
|
bs_put_matrix(bs, get_intra_matrix(pParam->mpeg_quant_matrices)); |
| 1226 |
|
|
| 1227 |
|
BitstreamPutBit(bs, is_custom_inter_matrix(pParam->mpeg_quant_matrices)); /* load_inter_quant_mat */ |
| 1228 |
|
if(is_custom_inter_matrix(pParam->mpeg_quant_matrices)) |
| 1229 |
|
bs_put_matrix(bs, get_inter_matrix(pParam->mpeg_quant_matrices)); |
| 1230 |
} |
} |
| 1231 |
|
|
| 1232 |
|
if (vol_ver_id != 1) { |
| 1233 |
|
if ((pParam->vol_flags & XVID_VOL_QUARTERPEL)) |
| 1234 |
|
BitstreamPutBit(bs, 1); /* quarterpel */ |
| 1235 |
|
else |
| 1236 |
|
BitstreamPutBit(bs, 0); /* no quarterpel */ |
| 1237 |
} |
} |
| 1238 |
|
|
| 1239 |
BitstreamPutBit(bs, 1); // complexity_estimation_disable |
BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
| 1240 |
BitstreamPutBit(bs, 1); // resync_marker_disable |
|
| 1241 |
BitstreamPutBit(bs, 0); // data_partitioned |
if (num_slices > 1) |
| 1242 |
BitstreamPutBit(bs, 0); // scalability |
BitstreamPutBit(bs, 0); /* resync_marker_enabled */ |
| 1243 |
|
else |
| 1244 |
|
BitstreamPutBit(bs, 1); /* resync_marker_disabled */ |
| 1245 |
|
|
| 1246 |
|
BitstreamPutBit(bs, 0); /* data_partitioned */ |
| 1247 |
|
|
| 1248 |
|
if (vol_ver_id != 1) { |
| 1249 |
|
BitstreamPutBit(bs, 0); /* newpred_enable */ |
| 1250 |
|
BitstreamPutBit(bs, 0); /* reduced_resolution_vop_enabled */ |
| 1251 |
|
} |
| 1252 |
|
|
| 1253 |
|
BitstreamPutBit(bs, 0); /* scalability */ |
| 1254 |
|
|
| 1255 |
|
BitstreamPadAlways(bs); /* next_start_code(); */ |
| 1256 |
|
|
| 1257 |
|
/* divx5 userdata string */ |
| 1258 |
|
#define DIVX5_ID ((char *)"DivX503b1393") |
| 1259 |
|
if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
| 1260 |
|
BitstreamWriteUserData(bs, DIVX5_ID, (uint32_t)strlen(DIVX5_ID)); |
| 1261 |
|
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) |
| 1262 |
|
BitstreamPutBits(bs, 'p', 8); |
| 1263 |
|
} |
| 1264 |
|
|
| 1265 |
|
/* xvid id */ |
| 1266 |
|
{ |
| 1267 |
|
const char xvid_user_format[] = "XviD%04d%c"; |
| 1268 |
|
char xvid_user_data[100]; |
| 1269 |
|
sprintf(xvid_user_data, |
| 1270 |
|
xvid_user_format, |
| 1271 |
|
XVID_BS_VERSION, |
| 1272 |
|
(frame->vop_flags & XVID_VOP_CARTOON)?'C':'\0'); |
| 1273 |
|
BitstreamWriteUserData(bs, xvid_user_data, (uint32_t)strlen(xvid_user_data)); |
| 1274 |
|
} |
| 1275 |
} |
} |
| 1276 |
|
|
| 1277 |
|
|
| 1278 |
/* |
/* |
| 1279 |
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) |
|
| 1280 |
*/ |
*/ |
| 1281 |
void BitstreamWriteVopHeader(Bitstream * const bs, |
void |
| 1282 |
|
BitstreamWriteVopHeader( |
| 1283 |
|
Bitstream * const bs, |
| 1284 |
const MBParam * pParam, |
const MBParam * pParam, |
| 1285 |
const FRAMEINFO * frame) |
const FRAMEINFO * const frame, |
| 1286 |
|
int vop_coded, |
| 1287 |
|
unsigned int quant) |
| 1288 |
{ |
{ |
| 1289 |
|
uint32_t i; |
| 1290 |
|
|
| 1291 |
|
#if 0 |
| 1292 |
BitstreamPad(bs); |
BitstreamPad(bs); |
| 1293 |
|
#endif |
| 1294 |
|
|
| 1295 |
|
/* |
| 1296 |
|
* no padding here, anymore. You have to make sure that you are |
| 1297 |
|
* byte aligned, and that always 1-8 padding bits have been written |
| 1298 |
|
*/ |
| 1299 |
|
|
| 1300 |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
| 1301 |
|
|
| 1302 |
BitstreamPutBits(bs, frame->coding_type, 2); |
BitstreamPutBits(bs, frame->coding_type, 2); |
| 1303 |
|
#if 0 |
| 1304 |
|
DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i\n", frame->coding_type); |
| 1305 |
|
#endif |
| 1306 |
|
|
| 1307 |
// time_base = 0 write n x PutBit(1), PutBit(0) |
for (i = 0; i < frame->seconds; i++) { |
| 1308 |
BitstreamPutBits(bs, 0, 1); |
BitstreamPutBit(bs, 1); |
| 1309 |
|
} |
| 1310 |
|
BitstreamPutBit(bs, 0); |
| 1311 |
|
|
| 1312 |
WRITE_MARKER(); |
WRITE_MARKER(); |
| 1313 |
|
|
| 1314 |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
/* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
| 1315 |
BitstreamPutBits(bs, 1, 1); |
BitstreamPutBits(bs, frame->ticks, MAX(log2bin(pParam->fbase-1), 1)); |
| 1316 |
|
#if 0 |
| 1317 |
|
DPRINTF("[%i:%i] %c", |
| 1318 |
|
frame->seconds, frame->ticks, |
| 1319 |
|
frame->coding_type == I_VOP ? 'I' : |
| 1320 |
|
frame->coding_type == P_VOP ? 'P' : |
| 1321 |
|
frame->coding_type == S_VOP ? 'S' : 'B'); |
| 1322 |
|
#endif |
| 1323 |
|
|
| 1324 |
WRITE_MARKER(); |
WRITE_MARKER(); |
| 1325 |
|
|
| 1326 |
BitstreamPutBits(bs, 1, 1); // vop_coded |
if (!vop_coded) { |
| 1327 |
|
BitstreamPutBits(bs, 0, 1); |
| 1328 |
|
#if 0 |
| 1329 |
|
BitstreamPadAlways(bs); /* next_start_code() */ |
| 1330 |
|
#endif |
| 1331 |
|
/* NB: It's up to the function caller to write the next_start_code(). |
| 1332 |
|
* At the moment encoder.c respects that requisite because a VOP |
| 1333 |
|
* always ends with a next_start_code either if it's coded or not |
| 1334 |
|
* and encoder.c terminates a frame with a next_start_code in whatever |
| 1335 |
|
* case */ |
| 1336 |
|
return; |
| 1337 |
|
} |
| 1338 |
|
|
| 1339 |
|
BitstreamPutBits(bs, 1, 1); /* vop_coded */ |
| 1340 |
|
|
| 1341 |
if (frame->coding_type != I_VOP) |
if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
| 1342 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
| 1343 |
|
|
| 1344 |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
| 1345 |
|
|
| 1346 |
|
if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
| 1347 |
|
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST)); |
| 1348 |
|
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN)); |
| 1349 |
|
} |
| 1350 |
|
|
| 1351 |
if (frame->global_flags & XVID_INTERLACING) |
if (frame->coding_type == S_VOP) { |
| 1352 |
|
if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */ |
| 1353 |
|
int k; |
| 1354 |
|
for (k=0;k<3;k++) |
| 1355 |
{ |
{ |
| 1356 |
BitstreamPutBit(bs, 1); // top field first |
bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */ |
| 1357 |
BitstreamPutBit(bs, 0); // alternate vertical scan |
WRITE_MARKER(); |
| 1358 |
|
|
| 1359 |
|
bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); /* dv[k] */ |
| 1360 |
|
WRITE_MARKER(); |
| 1361 |
|
|
| 1362 |
|
if ((frame->vol_flags & XVID_VOL_QUARTERPEL)) |
| 1363 |
|
{ |
| 1364 |
|
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); |
| 1365 |
|
} |
| 1366 |
|
else |
| 1367 |
|
{ |
| 1368 |
|
DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", k, frame->warp.duv[k].x, frame->warp.duv[k].y); |
| 1369 |
|
} |
| 1370 |
} |
} |
| 1371 |
|
} |
| 1372 |
|
} |
| 1373 |
|
|
| 1374 |
|
|
| 1375 |
BitstreamPutBits(bs, frame->quant, 5); // quantizer |
#if 0 |
| 1376 |
|
DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", quant); |
| 1377 |
|
#endif |
| 1378 |
|
|
| 1379 |
|
BitstreamPutBits(bs, quant, 5); /* quantizer */ |
| 1380 |
|
|
| 1381 |
if (frame->coding_type != I_VOP) |
if (frame->coding_type != I_VOP) |
| 1382 |
BitstreamPutBits(bs, frame->fcode, 3); // fixed_code = [1,4] |
BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |
| 1383 |
|
|
| 1384 |
|
if (frame->coding_type == B_VOP) |
| 1385 |
|
BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ |
| 1386 |
|
|
| 1387 |
|
} |
| 1388 |
|
|
| 1389 |
|
void |
| 1390 |
|
BitstreamWriteUserData(Bitstream * const bs, |
| 1391 |
|
const char *data, |
| 1392 |
|
const unsigned int length) |
| 1393 |
|
{ |
| 1394 |
|
unsigned int i; |
| 1395 |
|
|
| 1396 |
|
BitstreamPad(bs); |
| 1397 |
|
BitstreamPutBits(bs, USERDATA_START_CODE, 32); |
| 1398 |
|
|
| 1399 |
|
for (i = 0; i < length; i++) { |
| 1400 |
|
BitstreamPutBits(bs, data[i], 8); |
| 1401 |
|
} |
| 1402 |
|
|
| 1403 |
|
} |
| 1404 |
|
|
| 1405 |
|
/* |
| 1406 |
|
* Group of VOP |
| 1407 |
|
*/ |
| 1408 |
|
void |
| 1409 |
|
BitstreamWriteGroupOfVopHeader(Bitstream * const bs, |
| 1410 |
|
const MBParam * pParam, |
| 1411 |
|
uint32_t is_closed_gov) |
| 1412 |
|
{ |
| 1413 |
|
int64_t time = (pParam->m_stamp + (pParam->fbase/2)) / pParam->fbase; |
| 1414 |
|
int hours, minutes, seconds; |
| 1415 |
|
|
| 1416 |
|
/* compute time_code */ |
| 1417 |
|
seconds = time % 60; time /= 60; |
| 1418 |
|
minutes = time % 60; time /= 60; |
| 1419 |
|
hours = time % 24; /* don't overflow */ |
| 1420 |
|
|
| 1421 |
|
BitstreamPutBits(bs, GRPOFVOP_START_CODE, 32); |
| 1422 |
|
BitstreamPutBits(bs, hours, 5); |
| 1423 |
|
BitstreamPutBits(bs, minutes, 6); |
| 1424 |
|
BitstreamPutBit(bs, 1); |
| 1425 |
|
BitstreamPutBits(bs, seconds, 6); |
| 1426 |
|
BitstreamPutBits(bs, is_closed_gov, 1); |
| 1427 |
|
BitstreamPutBits(bs, 0, 1); /* broken_link */ |
| 1428 |
|
} |
| 1429 |
|
|
| 1430 |
|
/* |
| 1431 |
|
* End of Sequence |
| 1432 |
|
*/ |
| 1433 |
|
void |
| 1434 |
|
BitstreamWriteEndOfSequence(Bitstream * const bs) |
| 1435 |
|
{ |
| 1436 |
|
BitstreamPadAlways(bs); |
| 1437 |
|
BitstreamPutBits(bs, VISOBJSEQ_STOP_CODE, 32); |
| 1438 |
|
} |
| 1439 |
|
|
| 1440 |
|
/* |
| 1441 |
|
* Video Packet (resync marker) |
| 1442 |
|
*/ |
| 1443 |
|
|
| 1444 |
|
void write_video_packet_header(Bitstream * const bs, |
| 1445 |
|
const MBParam * pParam, |
| 1446 |
|
const FRAMEINFO * const frame, |
| 1447 |
|
int mbnum) |
| 1448 |
|
{ |
| 1449 |
|
const int mbnum_bits = log2bin(pParam->mb_width * pParam->mb_height - 1); |
| 1450 |
|
uint32_t nbitsresyncmarker; |
| 1451 |
|
|
| 1452 |
|
if (frame->coding_type == I_VOP) |
| 1453 |
|
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER; /* 16 zeros followed by a 1. */ |
| 1454 |
|
else if (frame->coding_type == B_VOP) /* B_VOP */ |
| 1455 |
|
nbitsresyncmarker = MAX(NUMBITS_VP_RESYNC_MARKER+1, NUMBITS_VP_RESYNC_MARKER + MAX(frame->fcode, frame->bcode) - 1); |
| 1456 |
|
else /*(frame->coding_type == P_VOP)*/ |
| 1457 |
|
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER + frame->fcode - 1; |
| 1458 |
|
|
| 1459 |
|
BitstreamPutBits(bs, RESYNC_MARKER, nbitsresyncmarker); |
| 1460 |
|
BitstreamPutBits(bs, mbnum, mbnum_bits); |
| 1461 |
|
BitstreamPutBits(bs, frame->quant, 5); |
| 1462 |
|
BitstreamPutBit(bs, 0); /* hec */ |
| 1463 |
} |
} |
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