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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 * |
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* * |
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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 * |
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* software module in hardware or software products are advised that its * |
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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 * |
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* software module and his/her company, and subsequent editors and their * |
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* companies, will have no liability for use of this software or * |
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* modifications or derivatives thereof. * |
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* * |
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* XviD is free software; you can redistribute it and/or modify it * |
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* under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* XviD is distributed in the hope that it will be useful, but * |
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* WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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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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* 11.07.2002 add VOP width & height return to dec when dec->width * |
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* or dec->height is 0 (for use in examples/ex1.c) * |
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* MinChen <chenm001@163.com> * |
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* 22.05.2002 bs_put_matrix fix * |
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* 20.05.2002 added BitstreamWriteUserData * |
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* 19.06.2002 Fix a little bug in use custom quant matrix * |
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* MinChen <chenm001@163.com> * |
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* 08.05.2002 add low_delay support for B_VOP decode * |
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* MinChen <chenm001@163.com> * |
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* 06.05.2002 low_delay * |
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* 06.05.2002 fixed fincr/fbase error * |
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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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******************************************************************************/ |
* XVID MPEG-4 VIDEO CODEC |
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* - Bitstream reader/writer - |
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* |
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* Copyright (C) 2001-2003 Peter Ross <pross@xvid.org> |
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* 2003 Cristoph Lampert <gruel@web.de> |
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* |
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* This program is free software ; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation ; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY ; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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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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* $Id$ |
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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 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 |
static uint32_t __inline log2bin(uint32_t value) |
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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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if (value & 0xffff0000) { |
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while (value) { |
value >>= 16; |
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value >>= 1; |
n += 16; |
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n++; |
} |
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} |
if (value & 0xff00) { |
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return n; |
value >>= 8; |
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#else |
n += 8; |
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__asm { |
} |
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bsr eax, value |
if (value & 0xf0) { |
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inc eax |
value >>= 4; |
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n += 4; |
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} |
} |
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#endif |
return n + log2_tab_16[value]; |
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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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32, /* never use */ |
32, /* never use */ |
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13, |
13, |
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}; |
}; |
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void |
static void |
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bs_get_matrix(Bitstream * bs, |
bs_get_matrix(Bitstream * bs, |
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uint8_t * matrix) |
uint8_t * matrix) |
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{ |
{ |
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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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if (value != 0) return; |
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i--; |
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while (i < 64) { |
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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// for PVOP addbits == fcode - 1 |
/* |
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// for BVOP addbits == max(fcode,bcode) - 1 |
* for PVOP addbits == fcode - 1 |
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// returns mbpos |
* for BVOP addbits == max(fcode,bcode) - 1 |
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* returns mbpos |
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*/ |
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int |
int |
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read_video_packet_header(Bitstream *bs, const int addbits, int * quant) |
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 nbits; |
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; |
int mbnum; |
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int hec; |
int hec = 0; |
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nbits = NUMBITS_VP_RESYNC_MARKER + addbits; |
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BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); |
BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); |
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BitstreamSkip(bs, nbits); |
BitstreamSkip(bs, startcode_bits); |
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DPRINTF(DPRINTF_STARTCODE, "<video_packet_header>"); |
DPRINTF(XVID_DEBUG_STARTCODE, "<video_packet_header>\n"); |
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// if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
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// hec |
{ |
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// vop_width |
hec = BitstreamGetBit(bs); /* header_extension_code */ |
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// marker_bit |
if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) |
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// vop_height |
{ |
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// marker_bit |
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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mbnum = BitstreamGetBits(bs, 9); |
BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ |
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DPRINTF(DPRINTF_HEADER, "mbnum %i", mbnum); |
READ_MARKER(); |
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BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ |
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// if (dec->shape != VIDOBJLAY_SHAPE_BINARYONLY) |
READ_MARKER(); |
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*quant = BitstreamGetBits(bs, 5); |
} |
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DPRINTF(DPRINTF_HEADER, "quant %i", *quant); |
} |
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// if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
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hec = BitstreamGetBit(bs); |
DPRINTF(XVID_DEBUG_HEADER, "mbnum %i\n", mbnum); |
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DPRINTF(DPRINTF_HEADER, "header_extension_code %i", hec); |
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// if (hec) |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
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// .. decoder hec-header ... |
{ |
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*quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */ |
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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 (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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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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/* TODO: sprite trajectory */ |
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} |
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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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BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */ |
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} |
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if (coding_type != I_VOP && fcode_forward) |
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{ |
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*fcode_forward = BitstreamGetBits(bs, 3); |
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DPRINTF(XVID_DEBUG_HEADER,"fcode_forward %i\n", *fcode_forward); |
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} |
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if (coding_type == B_VOP && fcode_backward) |
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{ |
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*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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199 |
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if (dec->newpred_enable) |
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{ |
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int vop_id; |
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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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READ_MARKER(); |
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} |
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return mbnum; |
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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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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if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */ |
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{ |
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e->opaque = BitstreamGetBit(bs); /* opaque */ |
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e->transparent = BitstreamGetBit(bs); /* transparent */ |
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e->intra_cae = BitstreamGetBit(bs); /* intra_cae */ |
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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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READ_MARKER(); |
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if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */ |
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{ |
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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 */ |
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e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */ |
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} |
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READ_MARKER(); |
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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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e->sadct = BitstreamGetBit(bs); /* sadct */ |
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e->quarterpel = BitstreamGetBit(bs); /* quarterpel */ |
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} |
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} |
280 |
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} |
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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) |
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{ |
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ESTIMATION * e = &dec->estimation; |
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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); /* */ |
295 |
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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); /* */ |
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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); /* */ |
305 |
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} |
306 |
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307 |
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if (coding_type == P_VOP) { |
308 |
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if (e->opaque) BitstreamSkip(bs, 8); /* */ |
309 |
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if (e->transparent) BitstreamSkip(bs, 8); /* */ |
310 |
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if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
311 |
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if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
312 |
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if (e->no_update) BitstreamSkip(bs, 8); /* */ |
313 |
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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 |
|
if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
334 |
|
if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
335 |
|
if (e->no_update) BitstreamSkip(bs, 8); /* */ |
336 |
|
if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
337 |
|
if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
338 |
|
if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
339 |
|
if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
340 |
|
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 |
|
|
375 |
|
|
376 |
|
|
377 |
|
|
378 |
/* |
/* |
379 |
decode headers |
decode headers |
380 |
returns coding_type, or -1 if error |
returns coding_type, or -1 if error |
390 |
uint32_t * quant, |
uint32_t * quant, |
391 |
uint32_t * fcode_forward, |
uint32_t * fcode_forward, |
392 |
uint32_t * fcode_backward, |
uint32_t * fcode_backward, |
393 |
uint32_t * intra_dc_threshold) |
uint32_t * intra_dc_threshold, |
394 |
|
WARPPOINTS *gmc_warp) |
395 |
{ |
{ |
396 |
uint32_t vol_ver_id; |
uint32_t vol_ver_id; |
|
static uint32_t time_increment_resolution; |
|
397 |
uint32_t coding_type; |
uint32_t coding_type; |
398 |
uint32_t start_code; |
uint32_t start_code; |
399 |
uint32_t time_incr = 0; |
uint32_t time_incr = 0; |
400 |
int32_t time_increment; |
int32_t time_increment = 0; |
401 |
|
int resize = 0; |
402 |
|
|
403 |
|
while ((BitstreamPos(bs) >> 3) + 4 <= bs->length) { |
404 |
|
|
|
do { |
|
405 |
BitstreamByteAlign(bs); |
BitstreamByteAlign(bs); |
406 |
start_code = BitstreamShowBits(bs, 32); |
start_code = BitstreamShowBits(bs, 32); |
407 |
|
|
409 |
|
|
410 |
int profile; |
int profile; |
411 |
|
|
412 |
DPRINTF(DPRINTF_STARTCODE, "<visual_object_sequence>"); |
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>\n"); |
413 |
|
|
414 |
BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */ |
415 |
profile = BitstreamGetBits(bs, 8); // profile_and_level_indication |
profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */ |
416 |
|
|
417 |
DPRINTF(DPRINTF_HEADER, "profile_and_level_indication %i", profile); |
DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i\n", profile); |
418 |
|
|
419 |
} else if (start_code == VISOBJSEQ_STOP_CODE) { |
} else if (start_code == VISOBJSEQ_STOP_CODE) { |
420 |
|
|
421 |
BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */ |
422 |
|
|
423 |
DPRINTF(DPRINTF_STARTCODE, "</visual_object_sequence>"); |
DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
424 |
|
|
425 |
} else if (start_code == VISOBJ_START_CODE) { |
} else if (start_code == VISOBJ_START_CODE) { |
426 |
|
|
427 |
DPRINTF(DPRINTF_STARTCODE, "<visual_object>"); |
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
428 |
|
|
429 |
BitstreamSkip(bs, 32); // visual_object_start_code |
BitstreamSkip(bs, 32); /* visual_object_start_code */ |
430 |
if (BitstreamGetBit(bs)) // is_visual_object_identified |
if (BitstreamGetBit(bs)) /* is_visual_object_identified */ |
431 |
{ |
{ |
432 |
vol_ver_id = BitstreamGetBits(bs, 4); // visual_object_ver_id |
dec->ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
433 |
DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", dec->ver_id); |
434 |
BitstreamSkip(bs, 3); // visual_object_priority |
BitstreamSkip(bs, 3); /* visual_object_priority */ |
435 |
} else { |
} else { |
436 |
vol_ver_id = 1; |
dec->ver_id = 1; |
437 |
} |
} |
438 |
|
|
439 |
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type |
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
440 |
{ |
{ |
441 |
DPRINTF(DPRINTF_ERROR, "visual_object_type != video"); |
DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video\n"); |
442 |
return -1; |
return -1; |
443 |
} |
} |
444 |
BitstreamSkip(bs, 4); |
BitstreamSkip(bs, 4); |
445 |
|
|
446 |
// video_signal_type |
/* video_signal_type */ |
447 |
|
|
448 |
if (BitstreamGetBit(bs)) // video_signal_type |
if (BitstreamGetBit(bs)) /* video_signal_type */ |
449 |
{ |
{ |
450 |
DPRINTF(DPRINTF_HEADER,"+ video_signal_type"); |
DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type\n"); |
451 |
BitstreamSkip(bs, 3); // video_format |
BitstreamSkip(bs, 3); /* video_format */ |
452 |
BitstreamSkip(bs, 1); // video_range |
BitstreamSkip(bs, 1); /* video_range */ |
453 |
if (BitstreamGetBit(bs)) // color_description |
if (BitstreamGetBit(bs)) /* color_description */ |
454 |
{ |
{ |
455 |
DPRINTF(DPRINTF_HEADER,"+ color_description"); |
DPRINTF(XVID_DEBUG_HEADER,"+ color_description"); |
456 |
BitstreamSkip(bs, 8); // color_primaries |
BitstreamSkip(bs, 8); /* color_primaries */ |
457 |
BitstreamSkip(bs, 8); // transfer_characteristics |
BitstreamSkip(bs, 8); /* transfer_characteristics */ |
458 |
BitstreamSkip(bs, 8); // matrix_coefficients |
BitstreamSkip(bs, 8); /* matrix_coefficients */ |
459 |
} |
} |
460 |
} |
} |
461 |
} else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
} else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
462 |
|
|
463 |
DPRINTF(DPRINTF_STARTCODE, "<video_object>"); |
DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>\n"); |
464 |
DPRINTF(DPRINTF_HEADER, "vo id %i", start_code & VIDOBJ_START_CODE_MASK); |
DPRINTF(XVID_DEBUG_HEADER, "vo id %i\n", start_code & VIDOBJ_START_CODE_MASK); |
465 |
|
|
466 |
BitstreamSkip(bs, 32); // video_object_start_code |
BitstreamSkip(bs, 32); /* video_object_start_code */ |
467 |
|
|
468 |
} else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { |
} else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { |
469 |
|
|
470 |
DPRINTF(DPRINTF_STARTCODE, "<video_object_layer>"); |
DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>\n"); |
471 |
DPRINTF(DPRINTF_HEADER, "vol id %i", start_code & VIDOBJLAY_START_CODE_MASK); |
DPRINTF(XVID_DEBUG_HEADER, "vol id %i\n", start_code & VIDOBJLAY_START_CODE_MASK); |
472 |
|
|
473 |
BitstreamSkip(bs, 32); // video_object_layer_start_code |
BitstreamSkip(bs, 32); /* video_object_layer_start_code */ |
474 |
|
BitstreamSkip(bs, 1); /* random_accessible_vol */ |
475 |
|
|
476 |
BitstreamSkip(bs, 1); // random_accessible_vol |
BitstreamSkip(bs, 8); /* video_object_type_indication */ |
477 |
|
|
478 |
// video_object_type_indication |
if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ |
|
if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX |
|
479 |
{ |
{ |
480 |
DPRINTF(DPRINTF_ERROR,"video_object_type_indication %i not supported ", |
DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier\n"); |
481 |
BitstreamShowBits(bs, 8)); |
vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */ |
482 |
return -1; |
DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); |
483 |
} |
BitstreamSkip(bs, 3); /* video_object_layer_priority */ |
|
BitstreamSkip(bs, 8); |
|
|
|
|
|
|
|
|
if (BitstreamGetBit(bs)) // is_object_layer_identifier |
|
|
{ |
|
|
DPRINTF(DPRINTF_HEADER, "+ is_object_layer_identifier"); |
|
|
vol_ver_id = BitstreamGetBits(bs, 4); // video_object_layer_verid |
|
|
DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
|
|
BitstreamSkip(bs, 3); // video_object_layer_priority |
|
484 |
} else { |
} else { |
485 |
vol_ver_id = 1; |
vol_ver_id = dec->ver_id; |
486 |
} |
} |
487 |
|
|
488 |
if (BitstreamGetBits(bs, 4) == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info |
dec->aspect_ratio = BitstreamGetBits(bs, 4); |
489 |
|
|
490 |
|
if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ |
491 |
{ |
{ |
492 |
DPRINTF(DPRINTF_HEADER, "+ aspect_ratio_info"); |
DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info\n"); |
493 |
BitstreamSkip(bs, 8); // par_width |
dec->par_width = BitstreamGetBits(bs, 8); /* par_width */ |
494 |
BitstreamSkip(bs, 8); // par_height |
dec->par_height = BitstreamGetBits(bs, 8); /* par_height */ |
495 |
} |
} |
496 |
|
|
497 |
if (BitstreamGetBit(bs)) // vol_control_parameters |
if (BitstreamGetBit(bs)) /* vol_control_parameters */ |
498 |
{ |
{ |
499 |
DPRINTF(DPRINTF_HEADER, "+ vol_control_parameters"); |
DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters\n"); |
500 |
BitstreamSkip(bs, 2); // chroma_format |
BitstreamSkip(bs, 2); /* chroma_format */ |
501 |
dec->low_delay = BitstreamGetBit(bs); // low_delay |
dec->low_delay = BitstreamGetBit(bs); /* low_delay */ |
502 |
DPRINTF(DPRINTF_HEADER, "low_delay %i", dec->low_delay); |
DPRINTF(XVID_DEBUG_HEADER, "low_delay %i\n", dec->low_delay); |
503 |
if (BitstreamGetBit(bs)) // vbv_parameters |
if (BitstreamGetBit(bs)) /* vbv_parameters */ |
504 |
{ |
{ |
505 |
DPRINTF(DPRINTF_HEADER,"+ vbv_parameters"); |
unsigned int bitrate; |
506 |
BitstreamSkip(bs, 15); // first_half_bitrate |
unsigned int buffer_size; |
507 |
|
unsigned int occupancy; |
508 |
|
|
509 |
|
DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters\n"); |
510 |
|
|
511 |
|
bitrate = BitstreamGetBits(bs,15) << 15; /* first_half_bit_rate */ |
512 |
READ_MARKER(); |
READ_MARKER(); |
513 |
BitstreamSkip(bs, 15); // latter_half_bitrate |
bitrate |= BitstreamGetBits(bs,15); /* latter_half_bit_rate */ |
514 |
READ_MARKER(); |
READ_MARKER(); |
515 |
BitstreamSkip(bs, 15); // first_half_vbv_buffer_size |
|
516 |
|
buffer_size = BitstreamGetBits(bs, 15) << 3; /* first_half_vbv_buffer_size */ |
517 |
READ_MARKER(); |
READ_MARKER(); |
518 |
BitstreamSkip(bs, 3); // latter_half_vbv_buffer_size |
buffer_size |= BitstreamGetBits(bs, 3); /* latter_half_vbv_buffer_size */ |
519 |
BitstreamSkip(bs, 11); // first_half_vbv_occupancy |
|
520 |
|
occupancy = BitstreamGetBits(bs, 11) << 15; /* first_half_vbv_occupancy */ |
521 |
READ_MARKER(); |
READ_MARKER(); |
522 |
BitstreamSkip(bs, 15); // latter_half_vbv_occupancy |
occupancy |= BitstreamGetBits(bs, 15); /* latter_half_vbv_occupancy */ |
523 |
READ_MARKER(); |
READ_MARKER(); |
524 |
|
|
525 |
|
DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)\n", bitrate); |
526 |
|
DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)\n", buffer_size); |
527 |
|
DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)\n", occupancy); |
528 |
} |
} |
529 |
|
}else{ |
530 |
|
dec->low_delay = dec->low_delay_default; |
531 |
} |
} |
532 |
|
|
533 |
dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape |
dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ |
534 |
DPRINTF(DPRINTF_HEADER, "shape %i", dec->shape); |
|
535 |
|
DPRINTF(XVID_DEBUG_HEADER, "shape %i\n", dec->shape); |
536 |
|
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
537 |
|
{ |
538 |
|
DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported\n"); |
539 |
|
} |
540 |
|
|
541 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { |
542 |
BitstreamSkip(bs, 4); // video_object_layer_shape_extension |
BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ |
543 |
} |
} |
544 |
|
|
545 |
READ_MARKER(); |
READ_MARKER(); |
546 |
|
|
547 |
// *************************** for decode B-frame time *********************** |
/********************** for decode B-frame time ***********************/ |
548 |
time_increment_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution |
dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ |
549 |
|
DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution); |
|
DPRINTF(DPRINTF_HEADER,"vop_time_increment_resolution %i", time_increment_resolution); |
|
550 |
|
|
551 |
time_increment_resolution--; |
if (dec->time_inc_resolution > 0) { |
552 |
|
dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
|
if (time_increment_resolution > 0) { |
|
|
dec->time_inc_bits = log2bin(time_increment_resolution); |
|
553 |
} else { |
} else { |
554 |
// dec->time_inc_bits = 0; |
/* for "old" xvid compatibility, set time_inc_bits = 1 */ |
|
// for "old" xvid compatibility, set time_inc_bits = 1 |
|
555 |
dec->time_inc_bits = 1; |
dec->time_inc_bits = 1; |
556 |
} |
} |
557 |
|
|
558 |
READ_MARKER(); |
READ_MARKER(); |
559 |
|
|
560 |
if (BitstreamGetBit(bs)) // fixed_vop_rate |
if (BitstreamGetBit(bs)) /* fixed_vop_rate */ |
561 |
{ |
{ |
562 |
DPRINTF(DPRINTF_HEADER, "+ fixed_vop_rate"); |
DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate\n"); |
563 |
BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ |
564 |
} |
} |
565 |
|
|
566 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
569 |
uint32_t width, height; |
uint32_t width, height; |
570 |
|
|
571 |
READ_MARKER(); |
READ_MARKER(); |
572 |
width = BitstreamGetBits(bs, 13); // video_object_layer_width |
width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ |
573 |
READ_MARKER(); |
READ_MARKER(); |
574 |
height = BitstreamGetBits(bs, 13); // video_object_layer_height |
height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ |
575 |
READ_MARKER(); |
READ_MARKER(); |
576 |
|
|
577 |
DPRINTF(DPRINTF_HEADER, "width %i", width); |
DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
578 |
DPRINTF(DPRINTF_HEADER, "height %i", height); |
DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); |
579 |
|
|
580 |
// for auto set width & height |
if (dec->width != width || dec->height != height) |
581 |
if (dec->width == 0) |
{ |
582 |
|
if (dec->fixed_dimensions) |
583 |
|
{ |
584 |
|
DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream\n"); |
585 |
|
return -1; |
586 |
|
} |
587 |
|
resize = 1; |
588 |
dec->width = width; |
dec->width = width; |
|
if (dec->height == 0) |
|
589 |
dec->height = height; |
dec->height = height; |
|
|
|
|
if (width != dec->width || height != dec->height) { |
|
|
DPRINTF(DPRINTF_ERROR, "XVID_DEC_PARAM width/height does not match bitstream"); |
|
|
return -1; |
|
590 |
} |
} |
|
|
|
591 |
} |
} |
592 |
|
|
593 |
dec->interlacing = BitstreamGetBit(bs); |
dec->interlacing = BitstreamGetBit(bs); |
594 |
DPRINTF(DPRINTF_HEADER, "interlace", dec->interlacing); |
DPRINTF(XVID_DEBUG_HEADER, "interlacing %i\n", dec->interlacing); |
595 |
|
|
596 |
if (!BitstreamGetBit(bs)) // obmc_disable |
if (!BitstreamGetBit(bs)) /* obmc_disable */ |
597 |
{ |
{ |
598 |
DPRINTF(DPRINTF_ERROR, "obmc_disabled==false not supported"); |
DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported\n"); |
599 |
// TODO |
/* TODO */ |
600 |
// fucking divx4.02 has this enabled |
/* fucking divx4.02 has this enabled */ |
601 |
} |
} |
602 |
|
|
603 |
if (BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2))) // sprite_enable |
dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); /* sprite_enable */ |
604 |
|
|
605 |
|
if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) |
606 |
{ |
{ |
607 |
DPRINTF(DPRINTF_ERROR, "spriate_enabled not supported"); |
int low_latency_sprite_enable; |
608 |
return -1; |
|
609 |
|
if (dec->sprite_enable != SPRITE_GMC) |
610 |
|
{ |
611 |
|
int sprite_width; |
612 |
|
int sprite_height; |
613 |
|
int sprite_left_coord; |
614 |
|
int sprite_top_coord; |
615 |
|
sprite_width = BitstreamGetBits(bs, 13); /* sprite_width */ |
616 |
|
READ_MARKER(); |
617 |
|
sprite_height = BitstreamGetBits(bs, 13); /* sprite_height */ |
618 |
|
READ_MARKER(); |
619 |
|
sprite_left_coord = BitstreamGetBits(bs, 13); /* sprite_left_coordinate */ |
620 |
|
READ_MARKER(); |
621 |
|
sprite_top_coord = BitstreamGetBits(bs, 13); /* sprite_top_coordinate */ |
622 |
|
READ_MARKER(); |
623 |
|
} |
624 |
|
dec->sprite_warping_points = BitstreamGetBits(bs, 6); /* no_of_sprite_warping_points */ |
625 |
|
dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); /* sprite_warping_accuracy */ |
626 |
|
dec->sprite_brightness_change = BitstreamGetBits(bs, 1); /* brightness_change */ |
627 |
|
if (dec->sprite_enable != SPRITE_GMC) |
628 |
|
{ |
629 |
|
low_latency_sprite_enable = BitstreamGetBits(bs, 1); /* low_latency_sprite_enable */ |
630 |
|
} |
631 |
} |
} |
632 |
|
|
633 |
if (vol_ver_id != 1 && |
if (vol_ver_id != 1 && |
634 |
dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
635 |
BitstreamSkip(bs, 1); // sadct_disable |
BitstreamSkip(bs, 1); /* sadct_disable */ |
636 |
} |
} |
637 |
|
|
638 |
if (BitstreamGetBit(bs)) // not_8_bit |
if (BitstreamGetBit(bs)) /* not_8_bit */ |
639 |
{ |
{ |
640 |
DPRINTF(DPRINTF_HEADER, "not_8_bit==true (ignored)"); |
DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)\n"); |
641 |
dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision |
dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */ |
642 |
BitstreamSkip(bs, 4); // bits_per_pixel |
BitstreamSkip(bs, 4); /* bits_per_pixel */ |
643 |
} else { |
} else { |
644 |
dec->quant_bits = 5; |
dec->quant_bits = 5; |
645 |
} |
} |
646 |
|
|
647 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
648 |
BitstreamSkip(bs, 1); // no_gray_quant_update |
BitstreamSkip(bs, 1); /* no_gray_quant_update */ |
649 |
BitstreamSkip(bs, 1); // composition_method |
BitstreamSkip(bs, 1); /* composition_method */ |
650 |
BitstreamSkip(bs, 1); // linear_composition |
BitstreamSkip(bs, 1); /* linear_composition */ |
651 |
} |
} |
652 |
|
|
653 |
dec->quant_type = BitstreamGetBit(bs); // quant_type |
dec->quant_type = BitstreamGetBit(bs); /* quant_type */ |
654 |
DPRINTF(DPRINTF_HEADER, "quant_type %i", dec->quant_type); |
DPRINTF(XVID_DEBUG_HEADER, "quant_type %i\n", dec->quant_type); |
655 |
|
|
656 |
if (dec->quant_type) { |
if (dec->quant_type) { |
657 |
if (BitstreamGetBit(bs)) // load_intra_quant_mat |
if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ |
658 |
{ |
{ |
659 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
660 |
|
|
661 |
DPRINTF(DPRINTF_HEADER, "load_intra_quant_mat"); |
DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n"); |
662 |
|
|
663 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
664 |
set_intra_matrix(matrix); |
set_intra_matrix(dec->mpeg_quant_matrices, matrix); |
665 |
} else |
} else |
666 |
set_intra_matrix(get_default_intra_matrix()); |
set_intra_matrix(dec->mpeg_quant_matrices, get_default_intra_matrix()); |
667 |
|
|
668 |
if (BitstreamGetBit(bs)) // load_inter_quant_mat |
if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
669 |
{ |
{ |
670 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
671 |
|
|
672 |
DPRINTF(DPRINTF_HEADER, "load_inter_quant_mat"); |
DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n"); |
673 |
|
|
674 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
675 |
set_inter_matrix(matrix); |
set_inter_matrix(dec->mpeg_quant_matrices, matrix); |
676 |
} else |
} else |
677 |
set_inter_matrix(get_default_inter_matrix()); |
set_inter_matrix(dec->mpeg_quant_matrices, get_default_inter_matrix()); |
678 |
|
|
679 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
680 |
DPRINTF(DPRINTF_ERROR, "greyscale matrix not supported"); |
DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n"); |
681 |
return -1; |
return -1; |
682 |
} |
} |
683 |
|
|
685 |
|
|
686 |
|
|
687 |
if (vol_ver_id != 1) { |
if (vol_ver_id != 1) { |
688 |
dec->quarterpel = BitstreamGetBit(bs); // quarter_sampe |
dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ |
689 |
if (dec->quarterpel) { |
DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i\n", dec->quarterpel); |
|
DPRINTF(DPRINTF_ERROR, "quarter_sample not supported"); |
|
690 |
} |
} |
691 |
} else { |
else |
692 |
dec->quarterpel = 0; |
dec->quarterpel = 0; |
|
} |
|
693 |
|
|
694 |
if (!BitstreamGetBit(bs)) // complexity_estimation_disable |
|
695 |
|
dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */ |
696 |
|
if (!dec->complexity_estimation_disable) |
697 |
{ |
{ |
698 |
DPRINTF(DPRINTF_ERROR, "complexity_estimation not supported"); |
read_vol_complexity_estimation_header(bs, dec); |
|
return -1; |
|
699 |
} |
} |
700 |
|
|
701 |
BitstreamSkip(bs, 1); // resync_marker_disable |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
702 |
|
|
703 |
if (BitstreamGetBit(bs)) // data_partitioned |
if (BitstreamGetBit(bs)) /* data_partitioned */ |
704 |
{ |
{ |
705 |
DPRINTF(DPRINTF_ERROR, "data_partitioned not supported"); |
DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported\n"); |
706 |
BitstreamSkip(bs, 1); // reversible_vlc |
BitstreamSkip(bs, 1); /* reversible_vlc */ |
707 |
} |
} |
708 |
|
|
709 |
if (vol_ver_id != 1) { |
if (vol_ver_id != 1) { |
710 |
if (BitstreamGetBit(bs)) // newpred_enable |
dec->newpred_enable = BitstreamGetBit(bs); |
711 |
|
if (dec->newpred_enable) /* newpred_enable */ |
712 |
{ |
{ |
713 |
DPRINTF(DPRINTF_HEADER, "+ newpred_enable"); |
DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable\n"); |
714 |
BitstreamSkip(bs, 2); // requested_upstream_message_type |
BitstreamSkip(bs, 2); /* requested_upstream_message_type */ |
715 |
BitstreamSkip(bs, 1); // newpred_segment_type |
BitstreamSkip(bs, 1); /* newpred_segment_type */ |
716 |
|
} |
717 |
|
dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */ |
718 |
|
DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i\n", dec->reduced_resolution_enable); |
719 |
|
} |
720 |
|
else |
721 |
|
{ |
722 |
|
dec->newpred_enable = 0; |
723 |
|
dec->reduced_resolution_enable = 0; |
724 |
|
} |
725 |
|
|
726 |
|
dec->scalability = BitstreamGetBit(bs); /* scalability */ |
727 |
|
if (dec->scalability) |
728 |
|
{ |
729 |
|
DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
730 |
|
BitstreamSkip(bs, 1); /* hierarchy_type */ |
731 |
|
BitstreamSkip(bs, 4); /* ref_layer_id */ |
732 |
|
BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */ |
733 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ |
734 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ |
735 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ |
736 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ |
737 |
|
BitstreamSkip(bs, 1); /* enhancement_type */ |
738 |
|
if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) { |
739 |
|
BitstreamSkip(bs, 1); /* use_ref_shape */ |
740 |
|
BitstreamSkip(bs, 1); /* use_ref_texture */ |
741 |
|
BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */ |
742 |
|
BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */ |
743 |
|
BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */ |
744 |
|
BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */ |
745 |
} |
} |
|
if (BitstreamGetBit(bs)) // reduced_resolution_vop_enable |
|
|
{ |
|
|
DPRINTF(DPRINTF_ERROR, "reduced_resolution_vop not supported"); |
|
746 |
return -1; |
return -1; |
747 |
} |
} |
748 |
} |
} else /* dec->shape == BINARY_ONLY */ |
|
|
|
|
if ((dec->scalability = BitstreamGetBit(bs))) // scalability |
|
|
{ |
|
|
DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
|
|
return -1; |
|
|
} |
|
|
} else // dec->shape == BINARY_ONLY |
|
749 |
{ |
{ |
750 |
if (vol_ver_id != 1) { |
if (vol_ver_id != 1) { |
751 |
if (BitstreamGetBit(bs)) // scalability |
dec->scalability = BitstreamGetBit(bs); /* scalability */ |
752 |
|
if (dec->scalability) |
753 |
{ |
{ |
754 |
DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
755 |
|
BitstreamSkip(bs, 4); /* ref_layer_id */ |
756 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ |
757 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ |
758 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ |
759 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ |
760 |
return -1; |
return -1; |
761 |
} |
} |
762 |
} |
} |
763 |
BitstreamSkip(bs, 1); // resync_marker_disable |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
764 |
|
|
765 |
} |
} |
766 |
|
|
767 |
|
return (resize ? -3 : -2 ); /* VOL */ |
768 |
|
|
769 |
} else if (start_code == GRPOFVOP_START_CODE) { |
} else if (start_code == GRPOFVOP_START_CODE) { |
770 |
|
|
771 |
DPRINTF(DPRINTF_STARTCODE, "<group_of_vop>"); |
DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>\n"); |
772 |
|
|
773 |
BitstreamSkip(bs, 32); |
BitstreamSkip(bs, 32); |
774 |
{ |
{ |
779 |
READ_MARKER(); |
READ_MARKER(); |
780 |
seconds = BitstreamGetBits(bs, 6); |
seconds = BitstreamGetBits(bs, 6); |
781 |
|
|
782 |
DPRINTF(DPRINTF_HEADER, "time %ih%im%is", hours); |
DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is\n", hours,minutes,seconds); |
783 |
} |
} |
784 |
BitstreamSkip(bs, 1); // closed_gov |
BitstreamSkip(bs, 1); /* closed_gov */ |
785 |
BitstreamSkip(bs, 1); // broken_link |
BitstreamSkip(bs, 1); /* broken_link */ |
786 |
|
|
787 |
} else if (start_code == VOP_START_CODE) { |
} else if (start_code == VOP_START_CODE) { |
788 |
|
|
789 |
DPRINTF(DPRINTF_STARTCODE, "<vop>"); |
DPRINTF(XVID_DEBUG_STARTCODE, "<vop>\n"); |
790 |
|
|
791 |
BitstreamSkip(bs, 32); // vop_start_code |
BitstreamSkip(bs, 32); /* vop_start_code */ |
792 |
|
|
793 |
coding_type = BitstreamGetBits(bs, 2); // vop_coding_type |
coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */ |
794 |
DPRINTF(DPRINTF_HEADER, "coding_type %i", coding_type); |
DPRINTF(XVID_DEBUG_HEADER, "coding_type %i\n", coding_type); |
795 |
|
|
796 |
// *************************** for decode B-frame time *********************** |
/*********************** for decode B-frame time ***********************/ |
797 |
while (BitstreamGetBit(bs) != 0) // time_base |
while (BitstreamGetBit(bs) != 0) /* time_base */ |
798 |
time_incr++; |
time_incr++; |
799 |
|
|
800 |
READ_MARKER(); |
READ_MARKER(); |
801 |
|
|
802 |
if (dec->time_inc_bits) { |
if (dec->time_inc_bits) { |
803 |
time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment |
time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ |
804 |
} |
} |
805 |
|
|
806 |
DPRINTF(DPRINTF_HEADER, "time_base %i", time_incr); |
DPRINTF(XVID_DEBUG_HEADER, "time_base %i\n", time_incr); |
807 |
DPRINTF(DPRINTF_HEADER, "time_increment %i", time_increment); |
DPRINTF(XVID_DEBUG_HEADER, "time_increment %i\n", time_increment); |
808 |
|
|
809 |
DPRINTF(DPRINTF_TIMECODE, "%c %i:%i", |
DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i\n", |
810 |
coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : 'B', |
coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
811 |
time_incr, time_increment); |
time_incr, time_increment); |
812 |
|
|
813 |
if (coding_type != B_VOP) { |
if (coding_type != B_VOP) { |
814 |
dec->last_time_base = dec->time_base; |
dec->last_time_base = dec->time_base; |
815 |
dec->time_base += time_incr; |
dec->time_base += time_incr; |
816 |
dec->time = |
dec->time = dec->time_base*dec->time_inc_resolution + time_increment; |
817 |
dec->time_base * time_increment_resolution + |
dec->time_pp = (int32_t)(dec->time - dec->last_non_b_time); |
|
time_increment; |
|
|
dec->time_pp = (uint32_t) (dec->time - dec->last_non_b_time); |
|
818 |
dec->last_non_b_time = dec->time; |
dec->last_non_b_time = dec->time; |
819 |
} else { |
} else { |
820 |
dec->time = |
dec->time = (dec->last_time_base + time_incr)*dec->time_inc_resolution + time_increment; |
821 |
(dec->last_time_base + |
dec->time_bp = dec->time_pp - (int32_t)(dec->last_non_b_time - dec->time); |
|
time_incr) * time_increment_resolution + time_increment; |
|
|
dec->time_bp = (uint32_t) (dec->last_non_b_time - dec->time); |
|
822 |
} |
} |
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(DPRINTF_HEADER, "vop_coded==false"); |
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 |
|
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 |
|
vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
844 |
|
DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
845 |
} |
} |
846 |
*/ |
READ_MARKER(); |
847 |
|
} |
848 |
|
|
849 |
|
|
850 |
// fix a little bug by MinChen <chenm002@163.com> |
|
851 |
|
/* fix a little bug by MinChen <chenm002@163.com> */ |
852 |
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
853 |
(coding_type == P_VOP)) { |
( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
854 |
*rounding = BitstreamGetBit(bs); // rounding_type |
*rounding = BitstreamGetBit(bs); /* rounding_type */ |
855 |
DPRINTF(DPRINTF_HEADER, "rounding %i", *rounding); |
DPRINTF(XVID_DEBUG_HEADER, "rounding %i\n", *rounding); |
856 |
} |
} |
857 |
|
|
858 |
/* if (reduced_resolution_enable) |
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) { |
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 |
DPRINTF(DPRINTF_HEADER, "width %i", width); |
DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
882 |
DPRINTF(DPRINTF_HEADER, "height %i", height); |
DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); |
883 |
DPRINTF(DPRINTF_HEADER, "horiz_mc_ref %i", horiz_mc_ref); |
DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i\n", horiz_mc_ref); |
884 |
DPRINTF(DPRINTF_HEADER, "vert_mc_ref %i", vert_mc_ref); |
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) { |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
895 |
// intra_dc_vlc_threshold |
|
896 |
|
if (!dec->complexity_estimation_disable) |
897 |
|
{ |
898 |
|
read_vop_complexity_estimation_header(bs, dec, coding_type); |
899 |
|
} |
900 |
|
|
901 |
|
/* intra_dc_vlc_threshold */ |
902 |
*intra_dc_threshold = |
*intra_dc_threshold = |
903 |
intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; |
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) { |
if (dec->interlacing) { |
909 |
dec->top_field_first = BitstreamGetBit(bs); |
dec->top_field_first = BitstreamGetBit(bs); |
910 |
DPRINTF(DPRINTF_HEADER, "interlace top_field_first %i", dec->top_field_first); |
DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i\n", dec->top_field_first); |
911 |
dec->alternate_vertical_scan = BitstreamGetBit(bs); |
dec->alternate_vertical_scan = BitstreamGetBit(bs); |
912 |
DPRINTF(DPRINTF_HEADER, "interlace alternate_vertical_scan %i", dec->alternate_vertical_scan); |
DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i\n", dec->alternate_vertical_scan); |
913 |
|
|
914 |
} |
} |
915 |
} |
} |
916 |
|
|
917 |
if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) // vop_quant |
if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
|
*quant = 1; |
|
918 |
|
|
919 |
DPRINTF(DPRINTF_HEADER, "quant %i", *quant); |
int i; |
920 |
|
|
921 |
|
for (i = 0 ; i < dec->sprite_warping_points; i++) |
922 |
|
{ |
923 |
|
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 |
|
|
949 |
|
if (dec->sprite_brightness_change) |
950 |
|
{ |
951 |
|
/* XXX: brightness_change_factor() */ |
952 |
|
} |
953 |
|
if (dec->sprite_enable == SPRITE_STATIC) |
954 |
|
{ |
955 |
|
/* XXX: todo */ |
956 |
|
} |
957 |
|
|
958 |
|
} |
959 |
|
|
960 |
|
if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */ |
961 |
|
*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 |
*fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */ |
966 |
DPRINTF(DPRINTF_HEADER, "fcode_forward %i", *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 |
*fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */ |
971 |
DPRINTF(DPRINTF_HEADER, "fcode_backward %i", *fcode_backward); |
DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i\n", *fcode_backward); |
972 |
} |
} |
973 |
if (!dec->scalability) { |
if (!dec->scalability) { |
974 |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && |
975 |
(coding_type != I_VOP)) { |
(coding_type != I_VOP)) { |
976 |
BitstreamSkip(bs, 1); // vop_shape_coding_type |
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) { |
} 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 |
DPRINTF(DPRINTF_STARTCODE, "<user_data>"); |
for(i = 1; i < 256; i++){ |
992 |
|
tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); |
993 |
|
|
994 |
BitstreamSkip(bs, 32); // user_data_start_code |
if(tmp[i] == 0) |
995 |
|
break; |
996 |
|
|
997 |
} else // start_code == ? |
BitstreamSkip(bs, 8); |
998 |
|
} |
999 |
|
|
1000 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp); |
1001 |
|
|
1002 |
|
/* 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 |
|
|
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 |
|
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 |
|
} else /* start_code == ? */ |
1027 |
{ |
{ |
1028 |
if (BitstreamShowBits(bs, 24) == 0x000001) { |
if (BitstreamShowBits(bs, 24) == 0x000001) { |
1029 |
DPRINTF(DPRINTF_STARTCODE, "<unknown: %x>", BitstreamShowBits(bs, 32)); |
DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>\n", BitstreamShowBits(bs, 32)); |
1030 |
} |
} |
1031 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
1032 |
} |
} |
1033 |
} |
} |
|
while ((BitstreamPos(bs) >> 3) < bs->length); |
|
1034 |
|
|
1035 |
//DPRINTF("*** WARNING: no vop_start_code found"); |
#if 0 |
1036 |
|
DPRINTF("*** WARNING: no vop_start_code found"); |
1037 |
|
#endif |
1038 |
return -1; /* ignore it */ |
return -1; /* ignore it */ |
1039 |
} |
} |
1040 |
|
|
1043 |
|
|
1044 |
static void |
static void |
1045 |
bs_put_matrix(Bitstream * bs, |
bs_put_matrix(Bitstream * bs, |
1046 |
const int16_t * matrix) |
const uint16_t * matrix) |
1047 |
{ |
{ |
1048 |
int i, j; |
int i, j; |
1049 |
const int last = matrix[scan_tables[0][63]]; |
const int last = matrix[scan_tables[0][63]]; |
1066 |
void |
void |
1067 |
BitstreamWriteVolHeader(Bitstream * const bs, |
BitstreamWriteVolHeader(Bitstream * const bs, |
1068 |
const MBParam * pParam, |
const MBParam * pParam, |
1069 |
const FRAMEINFO * frame) |
const FRAMEINFO * const frame) |
1070 |
{ |
{ |
1071 |
// video object_start_code & vo_id |
static const unsigned int vo_id = 0; |
1072 |
|
static const unsigned int vol_id = 0; |
1073 |
|
int vol_ver_id = 1; |
1074 |
|
int vol_type_ind = VIDOBJLAY_TYPE_SIMPLE; |
1075 |
|
int vol_profile = pParam->profile; |
1076 |
|
|
1077 |
|
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1078 |
|
(pParam->vol_flags & XVID_VOL_GMC)) |
1079 |
|
vol_ver_id = 2; |
1080 |
|
|
1081 |
|
if ((pParam->vol_flags & (XVID_VOL_MPEGQUANT|XVID_VOL_QUARTERPEL|XVID_VOL_GMC|XVID_VOL_INTERLACING)) || |
1082 |
|
pParam->max_bframes>0) { |
1083 |
|
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
1084 |
|
} |
1085 |
|
|
1086 |
|
/* visual_object_sequence_start_code */ |
1087 |
|
#if 0 |
1088 |
|
BitstreamPad(bs); |
1089 |
|
#endif |
1090 |
|
|
1091 |
|
/* |
1092 |
|
* no padding here, anymore. You have to make sure that you are |
1093 |
|
* byte aligned, and that always 1-8 padding bits have been written |
1094 |
|
*/ |
1095 |
|
|
1096 |
|
if (!vol_profile) { |
1097 |
|
/* Profile was not set by client app, use the more permissive profile |
1098 |
|
* compatible with the vol_type_id */ |
1099 |
|
switch(vol_type_ind) { |
1100 |
|
case VIDOBJLAY_TYPE_ASP: |
1101 |
|
vol_profile = 0xf5; /* ASP level 5 */ |
1102 |
|
break; |
1103 |
|
case VIDOBJLAY_TYPE_ART_SIMPLE: |
1104 |
|
vol_profile = 0x94; /* ARTS level 4 */ |
1105 |
|
break; |
1106 |
|
default: |
1107 |
|
vol_profile = 0x03; /* Simple level 3 */ |
1108 |
|
break; |
1109 |
|
} |
1110 |
|
} |
1111 |
|
|
1112 |
|
/* Write the VOS header */ |
1113 |
|
BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); |
1114 |
|
BitstreamPutBits(bs, vol_profile, 8); /* profile_and_level_indication */ |
1115 |
|
|
1116 |
|
|
1117 |
|
/* visual_object_start_code */ |
1118 |
BitstreamPad(bs); |
BitstreamPad(bs); |
1119 |
BitstreamPutBits(bs, VO_START_CODE, 27); |
BitstreamPutBits(bs, VISOBJ_START_CODE, 32); |
1120 |
BitstreamPutBits(bs, 0, 5); |
BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */ |
1121 |
|
|
1122 |
// video_object_layer_start_code & vol_id |
/* Video type */ |
1123 |
BitstreamPutBits(bs, VOL_START_CODE, 28); |
BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */ |
1124 |
BitstreamPutBits(bs, 0, 4); |
BitstreamPutBit(bs, 0); /* video_signal_type */ |
1125 |
|
|
1126 |
BitstreamPutBit(bs, 0); // random_accessible_vol |
/* video object_start_code & vo_id */ |
1127 |
BitstreamPutBits(bs, 0, 8); // video_object_type_indication |
BitstreamPadAlways(bs); /* next_start_code() */ |
1128 |
BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given) |
BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
1129 |
BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
|
1130 |
|
/* video_object_layer_start_code & vol_id */ |
1131 |
|
BitstreamPad(bs); |
1132 |
|
BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32); |
1133 |
|
|
1134 |
|
BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
1135 |
|
BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */ |
1136 |
|
|
1137 |
|
if (vol_ver_id == 1) { |
1138 |
|
BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ |
1139 |
|
} else { |
1140 |
|
BitstreamPutBit(bs, 1); /* is_object_layer_identified */ |
1141 |
|
BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */ |
1142 |
|
BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==highest, 7==lowest) */ |
1143 |
|
} |
1144 |
|
|
1145 |
|
/* Aspect ratio */ |
1146 |
|
BitstreamPutBits(bs, pParam->par, 4); /* aspect_ratio_info (1=1:1) */ |
1147 |
|
if(pParam->par == XVID_PAR_EXT) { |
1148 |
|
BitstreamPutBits(bs, pParam->par_width, 8); |
1149 |
|
BitstreamPutBits(bs, pParam->par_height, 8); |
1150 |
|
} |
1151 |
|
|
1152 |
|
BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
1153 |
|
BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ |
1154 |
|
|
|
#ifdef BFRAMES |
|
1155 |
if (pParam->max_bframes > 0) { |
if (pParam->max_bframes > 0) { |
1156 |
//DPRINTF("low_delay=1"); |
BitstreamPutBit(bs, 0); /* low_delay */ |
|
BitstreamPutBit(bs, 1); // vol_control_parameters |
|
|
BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0" |
|
|
BitstreamPutBit(bs, 0); // low_delay |
|
|
BitstreamPutBit(bs, 0); // vbv_parameters (0=not given) |
|
1157 |
} else |
} else |
|
#endif |
|
1158 |
{ |
{ |
1159 |
BitstreamPutBits(bs, 0, 1); // vol_control_parameters (0=not given) |
BitstreamPutBit(bs, 1); /* low_delay */ |
1160 |
} |
} |
1161 |
|
BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */ |
1162 |
|
|
1163 |
|
BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */ |
|
BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
|
1164 |
|
|
1165 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1166 |
|
|
1167 |
/* time_increment_resolution; ignored by current decore versions |
/* |
1168 |
eg. 2fps res=2 inc=1 |
* time_inc_resolution; ignored by current decore versions |
1169 |
25fps res=25 inc=1 |
* eg. 2fps res=2 inc=1 |
1170 |
29.97fps res=30000 inc=1001 |
* 25fps res=25 inc=1 |
1171 |
|
* 29.97fps res=30000 inc=1001 |
1172 |
*/ |
*/ |
|
#ifdef BFRAMES |
|
1173 |
BitstreamPutBits(bs, pParam->fbase, 16); |
BitstreamPutBits(bs, pParam->fbase, 16); |
|
#else |
|
|
BitstreamPutBits(bs, 2, 16); |
|
|
#endif |
|
1174 |
|
|
1175 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1176 |
|
|
1177 |
#ifdef BFRAMES |
if (pParam->fincr>0) { |
1178 |
BitstreamPutBit(bs, 1); // fixed_vop_rate = 1 |
BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
1179 |
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); // fixed_vop_time_increment |
BitstreamPutBits(bs, pParam->fincr, MAX(log2bin(pParam->fbase-1),1)); /* fixed_vop_time_increment */ |
1180 |
#else |
}else{ |
1181 |
BitstreamPutBit(bs, 0); // fixed_vop_rate = 0 |
BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ |
1182 |
#endif |
} |
1183 |
|
|
1184 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1185 |
BitstreamPutBits(bs, pParam->width, 13); // width |
BitstreamPutBits(bs, pParam->width, 13); /* width */ |
1186 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1187 |
BitstreamPutBits(bs, pParam->height, 13); // height |
BitstreamPutBits(bs, pParam->height, 13); /* height */ |
1188 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1189 |
|
|
1190 |
BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace |
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); /* interlace */ |
1191 |
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 |
|
1192 |
|
|
1193 |
// quant_type 0=h.263 1=mpeg4(quantizer tables) |
if (vol_ver_id != 1) |
1194 |
BitstreamPutBit(bs, pParam->m_quant_type); |
{ if ((pParam->vol_flags & XVID_VOL_GMC)) |
1195 |
|
{ BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */ |
1196 |
|
BitstreamPutBits(bs, 3, 6); /* no_of_sprite_warping_points */ |
1197 |
|
BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ |
1198 |
|
BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */ |
1199 |
|
|
1200 |
if (pParam->m_quant_type) { |
/* |
1201 |
BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
* currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 |
1202 |
if (get_intra_matrix_status()) { |
* for DivX5 compatability |
1203 |
bs_put_matrix(bs, get_intra_matrix()); |
*/ |
1204 |
|
|
1205 |
|
} else |
1206 |
|
BitstreamPutBits(bs, 0, 2); /* sprite_enable==off */ |
1207 |
} |
} |
1208 |
|
else |
1209 |
|
BitstreamPutBit(bs, 0); /* sprite_enable==off */ |
1210 |
|
|
1211 |
BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
BitstreamPutBit(bs, 0); /* not_8_bit */ |
1212 |
if (get_inter_matrix_status()) { |
|
1213 |
bs_put_matrix(bs, get_inter_matrix()); |
/* quant_type 0=h.263 1=mpeg4(quantizer tables) */ |
1214 |
|
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT); |
1215 |
|
|
1216 |
|
if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) { |
1217 |
|
BitstreamPutBit(bs, is_custom_intra_matrix(pParam->mpeg_quant_matrices)); /* load_intra_quant_mat */ |
1218 |
|
if(is_custom_intra_matrix(pParam->mpeg_quant_matrices)) |
1219 |
|
bs_put_matrix(bs, get_intra_matrix(pParam->mpeg_quant_matrices)); |
1220 |
|
|
1221 |
|
BitstreamPutBit(bs, is_custom_inter_matrix(pParam->mpeg_quant_matrices)); /* load_inter_quant_mat */ |
1222 |
|
if(is_custom_inter_matrix(pParam->mpeg_quant_matrices)) |
1223 |
|
bs_put_matrix(bs, get_inter_matrix(pParam->mpeg_quant_matrices)); |
1224 |
} |
} |
1225 |
|
|
1226 |
|
if (vol_ver_id != 1) { |
1227 |
|
if ((pParam->vol_flags & XVID_VOL_QUARTERPEL)) |
1228 |
|
BitstreamPutBit(bs, 1); /* quarterpel */ |
1229 |
|
else |
1230 |
|
BitstreamPutBit(bs, 0); /* no quarterpel */ |
1231 |
} |
} |
1232 |
|
|
1233 |
BitstreamPutBit(bs, 1); // complexity_estimation_disable |
BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
1234 |
BitstreamPutBit(bs, 1); // resync_marker_disable |
BitstreamPutBit(bs, 1); /* resync_marker_disable */ |
1235 |
BitstreamPutBit(bs, 0); // data_partitioned |
BitstreamPutBit(bs, 0); /* data_partitioned */ |
1236 |
BitstreamPutBit(bs, 0); // scalability |
|
1237 |
|
if (vol_ver_id != 1) { |
1238 |
|
BitstreamPutBit(bs, 0); /* newpred_enable */ |
1239 |
|
BitstreamPutBit(bs, 0); /* reduced_resolution_vop_enabled */ |
1240 |
|
} |
1241 |
|
|
1242 |
|
BitstreamPutBit(bs, 0); /* scalability */ |
1243 |
|
|
1244 |
|
BitstreamPadAlways(bs); /* next_start_code(); */ |
1245 |
|
|
1246 |
|
/* divx5 userdata string */ |
1247 |
|
#define DIVX5_ID ((char *)"DivX503b1393") |
1248 |
|
if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
1249 |
|
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
1250 |
|
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) |
1251 |
|
BitstreamPutBits(bs, 'p', 8); |
1252 |
|
} |
1253 |
|
|
1254 |
|
/* xvid id */ |
1255 |
|
{ |
1256 |
|
const char xvid_user_format[] = "XviD%04d%c"; |
1257 |
|
char xvid_user_data[100]; |
1258 |
|
sprintf(xvid_user_data, |
1259 |
|
xvid_user_format, |
1260 |
|
XVID_BS_VERSION, |
1261 |
|
(frame->vop_flags & XVID_VOP_CARTOON)?'C':'\0'); |
1262 |
|
BitstreamWriteUserData(bs, xvid_user_data, strlen(xvid_user_data)); |
1263 |
|
} |
1264 |
} |
} |
1265 |
|
|
1266 |
|
|
1267 |
/* |
/* |
1268 |
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) |
|
1269 |
*/ |
*/ |
1270 |
void |
void |
1271 |
BitstreamWriteVopHeader(Bitstream * const bs, |
BitstreamWriteVopHeader( |
1272 |
|
Bitstream * const bs, |
1273 |
const MBParam * pParam, |
const MBParam * pParam, |
1274 |
const FRAMEINFO * frame, |
const FRAMEINFO * const frame, |
1275 |
int vop_coded) |
int vop_coded, |
1276 |
|
unsigned int quant) |
1277 |
{ |
{ |
|
#ifdef BFRAMES |
|
1278 |
uint32_t i; |
uint32_t i; |
1279 |
#endif |
|
1280 |
|
#if 0 |
1281 |
BitstreamPad(bs); |
BitstreamPad(bs); |
1282 |
|
#endif |
1283 |
|
|
1284 |
|
/* |
1285 |
|
* no padding here, anymore. You have to make sure that you are |
1286 |
|
* byte aligned, and that always 1-8 padding bits have been written |
1287 |
|
*/ |
1288 |
|
|
1289 |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
1290 |
|
|
1291 |
BitstreamPutBits(bs, frame->coding_type, 2); |
BitstreamPutBits(bs, frame->coding_type, 2); |
1292 |
|
#if 0 |
1293 |
|
DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i\n", frame->coding_type); |
1294 |
|
#endif |
1295 |
|
|
|
// time_base = 0 write n x PutBit(1), PutBit(0) |
|
|
#ifdef BFRAMES |
|
1296 |
for (i = 0; i < frame->seconds; i++) { |
for (i = 0; i < frame->seconds; i++) { |
1297 |
BitstreamPutBit(bs, 1); |
BitstreamPutBit(bs, 1); |
1298 |
} |
} |
1299 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 0); |
|
#else |
|
|
BitstreamPutBits(bs, 0, 1); |
|
|
#endif |
|
1300 |
|
|
1301 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1302 |
|
|
1303 |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
/* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
1304 |
#ifdef BFRAMES |
BitstreamPutBits(bs, frame->ticks, MAX(log2bin(pParam->fbase-1), 1)); |
1305 |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
#if 0 |
1306 |
/*DPRINTF("[%i:%i] %c\n", frame->seconds, frame->ticks, |
DPRINTF("[%i:%i] %c", |
1307 |
frame->coding_type == I_VOP ? 'I' : frame->coding_type == |
frame->seconds, frame->ticks, |
1308 |
P_VOP ? 'P' : 'B');*/ |
frame->coding_type == I_VOP ? 'I' : |
1309 |
#else |
frame->coding_type == P_VOP ? 'P' : |
1310 |
BitstreamPutBits(bs, 1, 1); |
frame->coding_type == S_VOP ? 'S' : 'B'); |
1311 |
#endif |
#endif |
1312 |
|
|
1313 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1314 |
|
|
1315 |
if (!vop_coded) { |
if (!vop_coded) { |
1316 |
BitstreamPutBits(bs, 0, 1); |
BitstreamPutBits(bs, 0, 1); |
1317 |
|
#if 0 |
1318 |
|
BitstreamPadAlways(bs); /* next_start_code() */ |
1319 |
|
#endif |
1320 |
|
/* NB: It's up to the function caller to write the next_start_code(). |
1321 |
|
* At the moment encoder.c respects that requisite because a VOP |
1322 |
|
* always ends with a next_start_code either if it's coded or not |
1323 |
|
* and encoder.c terminates a frame with a next_start_code in whatever |
1324 |
|
* case */ |
1325 |
return; |
return; |
1326 |
} |
} |
1327 |
|
|
1328 |
BitstreamPutBits(bs, 1, 1); // vop_coded |
BitstreamPutBits(bs, 1, 1); /* vop_coded */ |
1329 |
|
|
1330 |
if (frame->coding_type == P_VOP) |
if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1331 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
1332 |
|
|
1333 |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
1334 |
|
|
1335 |
if (frame->global_flags & XVID_INTERLACING) { |
if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
1336 |
BitstreamPutBit(bs, 1); // top field first |
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST)); |
1337 |
BitstreamPutBit(bs, 0); // alternate vertical scan |
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN)); |
1338 |
} |
} |
1339 |
|
|
1340 |
BitstreamPutBits(bs, frame->quant, 5); // quantizer |
if (frame->coding_type == S_VOP) { |
1341 |
|
if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */ |
1342 |
|
int k; |
1343 |
|
for (k=0;k<3;k++) |
1344 |
|
{ |
1345 |
|
bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */ |
1346 |
|
WRITE_MARKER(); |
1347 |
|
|
1348 |
|
bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); /* dv[k] */ |
1349 |
|
WRITE_MARKER(); |
1350 |
|
|
1351 |
|
if ((frame->vol_flags & XVID_VOL_QUARTERPEL)) |
1352 |
|
{ |
1353 |
|
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); |
1354 |
|
} |
1355 |
|
else |
1356 |
|
{ |
1357 |
|
DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", k, frame->warp.duv[k].x, frame->warp.duv[k].y); |
1358 |
|
} |
1359 |
|
} |
1360 |
|
} |
1361 |
|
} |
1362 |
|
|
1363 |
|
|
1364 |
|
#if 0 |
1365 |
|
DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", quant); |
1366 |
|
#endif |
1367 |
|
|
1368 |
|
BitstreamPutBits(bs, quant, 5); /* quantizer */ |
1369 |
|
|
1370 |
if (frame->coding_type != I_VOP) |
if (frame->coding_type != I_VOP) |
1371 |
BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code |
BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |
1372 |
|
|
1373 |
if (frame->coding_type == B_VOP) |
if (frame->coding_type == B_VOP) |
1374 |
BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ |
1375 |
|
|
1376 |
} |
} |
1377 |
|
|
|
|
|
1378 |
void |
void |
1379 |
BitstreamWriteUserData(Bitstream * const bs, |
BitstreamWriteUserData(Bitstream * const bs, |
1380 |
uint8_t * data, |
const char *data, |
1381 |
const int length) |
const unsigned int length) |
1382 |
{ |
{ |
1383 |
int i; |
int i; |
1384 |
|
|
1390 |
} |
} |
1391 |
|
|
1392 |
} |
} |
1393 |
|
|
1394 |
|
/* |
1395 |
|
* Group of VOP |
1396 |
|
*/ |
1397 |
|
void |
1398 |
|
BitstreamWriteGroupOfVopHeader(Bitstream * const bs, |
1399 |
|
const MBParam * pParam, |
1400 |
|
uint32_t is_closed_gov) |
1401 |
|
{ |
1402 |
|
int64_t time = (pParam->m_stamp + (pParam->fbase/2)) / pParam->fbase; |
1403 |
|
int hours, minutes, seconds; |
1404 |
|
|
1405 |
|
/* compute time_code */ |
1406 |
|
seconds = time % 60; time /= 60; |
1407 |
|
minutes = time % 60; time /= 60; |
1408 |
|
hours = time % 24; /* don't overflow */ |
1409 |
|
|
1410 |
|
BitstreamPutBits(bs, GRPOFVOP_START_CODE, 32); |
1411 |
|
BitstreamPutBits(bs, hours, 5); |
1412 |
|
BitstreamPutBits(bs, minutes, 6); |
1413 |
|
BitstreamPutBit(bs, 1); |
1414 |
|
BitstreamPutBits(bs, seconds, 6); |
1415 |
|
BitstreamPutBits(bs, is_closed_gov, 1); |
1416 |
|
BitstreamPutBits(bs, 0, 1); /* broken_link */ |
1417 |
|
} |
1418 |
|
|
1419 |
|
/* |
1420 |
|
* End of Sequence |
1421 |
|
*/ |
1422 |
|
void |
1423 |
|
BitstreamWriteEndOfSequence(Bitstream * const bs) |
1424 |
|
{ |
1425 |
|
BitstreamPadAlways(bs); |
1426 |
|
BitstreamPutBits(bs, VISOBJSEQ_STOP_CODE, 32); |
1427 |
|
} |
1428 |
|
|
1429 |
|
/* |
1430 |
|
* Video Packet (resync marker) |
1431 |
|
*/ |
1432 |
|
|
1433 |
|
void write_video_packet_header(Bitstream * const bs, |
1434 |
|
const MBParam * pParam, |
1435 |
|
const FRAMEINFO * const frame, |
1436 |
|
int mbnum) |
1437 |
|
{ |
1438 |
|
const int mbnum_bits = log2bin(pParam->mb_width * pParam->mb_height - 1); |
1439 |
|
uint32_t nbitsresyncmarker; |
1440 |
|
|
1441 |
|
if (frame->coding_type == I_VOP) |
1442 |
|
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER; /* 16 zeros followed by a 1. */ |
1443 |
|
else if (frame->coding_type == P_VOP) |
1444 |
|
nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER-1 + frame->fcode; |
1445 |
|
else /* B_VOP */ |
1446 |
|
nbitsresyncmarker = MAX(NUMBITS_VP_RESYNC_MARKER, NUMBITS_VP_RESYNC_MARKER-1 + MAX(frame->fcode, frame->bcode)); |
1447 |
|
|
1448 |
|
BitstreamPadAlways(bs); |
1449 |
|
BitstreamPutBits(bs, RESYNC_MARKER, nbitsresyncmarker); |
1450 |
|
BitstreamPutBits(bs, mbnum, mbnum_bits); |
1451 |
|
BitstreamPutBits(bs, frame->quant, 5); |
1452 |
|
BitstreamPutBit(bs, 0); /* hec */ |
1453 |
|
} |