1 |
/****************************************************************************** |
/***************************************************************************** |
|
* * |
|
|
* This file is part of XviD, a free MPEG-4 video encoder/decoder * |
|
|
* * |
|
|
* XviD is an implementation of a part of one or more MPEG-4 Video tools * |
|
|
* as specified in ISO/IEC 14496-2 standard. Those intending to use this * |
|
|
* software module in hardware or software products are advised that its * |
|
|
* use may infringe existing patents or copyrights, and any such use * |
|
|
* would be at such party's own risk. The original developer of this * |
|
|
* software module and his/her company, and subsequent editors and their * |
|
|
* companies, will have no liability for use of this software or * |
|
|
* modifications or derivatives thereof. * |
|
|
* * |
|
|
* XviD is free software; you can redistribute it and/or modify it * |
|
|
* under the terms of the GNU General Public License as published by * |
|
|
* the Free Software Foundation; either version 2 of the License, or * |
|
|
* (at your option) any later version. * |
|
|
* * |
|
|
* XviD is distributed in the hope that it will be useful, but * |
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of * |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
|
|
* GNU General Public License for more details. * |
|
|
* * |
|
|
* You should have received a copy of the GNU General Public License * |
|
|
* along with this program; if not, write to the Free Software * |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
|
|
* * |
|
|
******************************************************************************/ |
|
|
|
|
|
/****************************************************************************** |
|
|
* * |
|
|
* bitstream.c * |
|
|
* * |
|
|
* Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * |
|
|
* * |
|
|
* For more information visit the XviD homepage: http://www.xvid.org * |
|
|
* * |
|
|
******************************************************************************/ |
|
|
|
|
|
/****************************************************************************** |
|
|
* * |
|
|
* Revision history: * |
|
|
* * |
|
|
* 11.07.2002 add VOP width & height return to dec when dec->width * |
|
|
* or dec->height is 0 (for use in examples/ex1.c) * |
|
|
* MinChen <chenm001@163.com> * |
|
|
* 22.05.2002 bs_put_matrix fix * |
|
|
* 20.05.2002 added BitstreamWriteUserData * |
|
|
* 19.06.2002 Fix a little bug in use custom quant matrix * |
|
|
* MinChen <chenm001@163.com> * |
|
|
* 08.05.2002 add low_delay support for B_VOP decode * |
|
|
* MinChen <chenm001@163.com> * |
|
|
* 06.05.2002 low_delay * |
|
|
* 06.05.2002 fixed fincr/fbase error * |
|
|
* 01.05.2002 added BVOP support to BitstreamWriteVopHeader * |
|
|
* 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
|
|
* 26.03.2002 interlacing support * |
|
|
* 03.03.2002 qmatrix writing * |
|
|
* 03.03.2002 merged BITREADER and BITWRITER * |
|
|
* 30.02.2002 intra_dc_threshold support * |
|
|
* 04.12.2001 support for additional headers * |
|
|
* 16.12.2001 inital version * |
|
2 |
* |
* |
3 |
******************************************************************************/ |
* XVID MPEG-4 VIDEO CODEC |
4 |
|
* - Bitstream reader/writer functions - |
5 |
|
* |
6 |
|
* Copyright (C) 2001-2002 - Peter Ross <pross@xvid.org> |
7 |
|
* |
8 |
|
* This program is an implementation of a part of one or more MPEG-4 |
9 |
|
* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
10 |
|
* to use this software module in hardware or software products are |
11 |
|
* advised that its use may infringe existing patents or copyrights, and |
12 |
|
* any such use would be at such party's own risk. The original |
13 |
|
* developer of this software module and his/her company, and subsequent |
14 |
|
* editors and their companies, will have no liability for use of this |
15 |
|
* software or modifications or derivatives thereof. |
16 |
|
* |
17 |
|
* This program is free software ; you can redistribute it and/or modify |
18 |
|
* it under the terms of the GNU General Public License as published by |
19 |
|
* the Free Software Foundation ; either version 2 of the License, or |
20 |
|
* (at your option) any later version. |
21 |
|
* |
22 |
|
* This program is distributed in the hope that it will be useful, |
23 |
|
* but WITHOUT ANY WARRANTY ; without even the implied warranty of |
24 |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
25 |
|
* GNU General Public License for more details. |
26 |
|
* |
27 |
|
* You should have received a copy of the GNU General Public License |
28 |
|
* along with this program ; if not, write to the Free Software |
29 |
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
30 |
|
* |
31 |
|
* $Id$ |
32 |
|
* |
33 |
|
****************************************************************************/ |
34 |
|
|
35 |
#include "bitstream.h" |
#include "bitstream.h" |
36 |
#include "zigzag.h" |
#include "zigzag.h" |
37 |
#include "../quant/quant_matrix.h" |
#include "../quant/quant_matrix.h" |
38 |
|
|
39 |
|
/***************************************************************************** |
40 |
|
* Functions |
41 |
|
****************************************************************************/ |
42 |
|
|
43 |
static uint32_t __inline |
static uint32_t __inline |
44 |
log2bin(uint32_t value) |
log2bin(uint32_t value) |
161 |
uint32_t coding_type; |
uint32_t coding_type; |
162 |
uint32_t start_code; |
uint32_t start_code; |
163 |
uint32_t time_incr = 0; |
uint32_t time_incr = 0; |
164 |
int32_t time_increment; |
int32_t time_increment = 0; |
165 |
|
|
166 |
do { |
do { |
167 |
BitstreamByteAlign(bs); |
BitstreamByteAlign(bs); |
417 |
|
|
418 |
|
|
419 |
if (vol_ver_id != 1) { |
if (vol_ver_id != 1) { |
420 |
DEBUG("QUARTERPEL BITSTREAM"); |
DPRINTF(DPRINTF_DEBUG, "QUARTERPEL BITSTREAM"); |
421 |
dec->quarterpel = BitstreamGetBit(bs); // quarter_sample |
dec->quarterpel = BitstreamGetBit(bs); // quarter_sample |
422 |
} |
} |
423 |
else |
else |
688 |
BitstreamPutBit(bs, 1); // vol_control_parameters |
BitstreamPutBit(bs, 1); // vol_control_parameters |
689 |
BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0" |
BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0" |
690 |
|
|
|
#ifdef BFRAMES |
|
|
if (pParam->max_bframes > 0) { |
|
|
BitstreamPutBit(bs, 0); // low_delay |
|
|
} else |
|
|
#endif |
|
|
{ |
|
691 |
BitstreamPutBit(bs, 1); // low_delay |
BitstreamPutBit(bs, 1); // low_delay |
692 |
} |
|
693 |
BitstreamPutBit(bs, 0); // vbv_parameters (0=not given) |
BitstreamPutBit(bs, 0); // vbv_parameters (0=not given) |
694 |
|
|
695 |
BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
696 |
|
|
697 |
WRITE_MARKER(); |
WRITE_MARKER(); |
698 |
|
|
699 |
/* time_increment_resolution; ignored by current decore versions |
/* |
700 |
eg. 2fps res=2 inc=1 |
* time_increment_resolution; ignored by current decore versions |
701 |
25fps res=25 inc=1 |
* eg. 2fps res=2 inc=1 |
702 |
29.97fps res=30000 inc=1001 |
* 25fps res=25 inc=1 |
703 |
|
* 29.97fps res=30000 inc=1001 |
704 |
*/ |
*/ |
|
#ifdef BFRAMES |
|
|
BitstreamPutBits(bs, pParam->fbase, 16); |
|
|
#else |
|
705 |
BitstreamPutBits(bs, pParam->fbase, 16); |
BitstreamPutBits(bs, pParam->fbase, 16); |
706 |
#endif |
|
707 |
|
|
708 |
WRITE_MARKER(); |
WRITE_MARKER(); |
709 |
|
|
|
#ifdef BFRAMES |
|
|
BitstreamPutBit(bs, 1); // fixed_vop_rate = 1 |
|
|
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); // fixed_vop_time_increment |
|
|
#else |
|
710 |
BitstreamPutBit(bs, 1); // fixed_vop_rate = 1 |
BitstreamPutBit(bs, 1); // fixed_vop_rate = 1 |
711 |
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); // fixed_vop_time_increment |
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); // fixed_vop_time_increment |
|
#endif |
|
712 |
|
|
713 |
WRITE_MARKER(); |
WRITE_MARKER(); |
714 |
BitstreamPutBits(bs, pParam->width, 13); // width |
BitstreamPutBits(bs, pParam->width, 13); // width |
766 |
BitstreamPutBits(bs, frame->coding_type, 2); |
BitstreamPutBits(bs, frame->coding_type, 2); |
767 |
|
|
768 |
// time_base = 0 write n x PutBit(1), PutBit(0) |
// time_base = 0 write n x PutBit(1), PutBit(0) |
|
#ifdef BFRAMES |
|
|
for (i = 0; i < frame->seconds; i++) { |
|
|
BitstreamPutBit(bs, 1); |
|
|
} |
|
|
BitstreamPutBit(bs, 0); |
|
|
#else |
|
769 |
for (i = 0; i < frame->seconds; i++) { |
for (i = 0; i < frame->seconds; i++) { |
770 |
BitstreamPutBit(bs, 1); |
BitstreamPutBit(bs, 1); |
771 |
} |
} |
772 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 0); |
|
// BitstreamPutBits(bs, 0, 1); |
|
|
#endif |
|
773 |
|
|
774 |
WRITE_MARKER(); |
WRITE_MARKER(); |
775 |
|
|
776 |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
|
#ifdef BFRAMES |
|
777 |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
|
/*DPRINTF("[%i:%i] %c\n", frame->seconds, frame->ticks, |
|
|
frame->coding_type == I_VOP ? 'I' : frame->coding_type == |
|
|
P_VOP ? 'P' : 'B');*/ |
|
|
#else |
|
|
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
|
|
// BitstreamPutBits(bs, 1, 1); |
|
|
#endif |
|
778 |
|
|
779 |
WRITE_MARKER(); |
WRITE_MARKER(); |
780 |
|
|
804 |
BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
805 |
|
|
806 |
} |
} |
|
|
|
|
|
|
|
void |
|
|
BitstreamWriteUserData(Bitstream * const bs, |
|
|
uint8_t * data, |
|
|
const int length) |
|
|
{ |
|
|
int i; |
|
|
|
|
|
BitstreamPad(bs); |
|
|
BitstreamPutBits(bs, USERDATA_START_CODE, 32); |
|
|
|
|
|
for (i = 0; i < length; i++) { |
|
|
BitstreamPutBits(bs, data[i], 8); |
|
|
} |
|
|
|
|
|
} |
|