Libav
rv20enc.c
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1 /*
2  * RV20 encoder
3  * Copyright (c) 2000,2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer
5  *
6  * This file is part of Libav.
7  *
8  * Libav is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * Libav is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
28 #include "mpegvideo.h"
29 #include "h263.h"
30 #include "put_bits.h"
31 
32 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number){
33  put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ?
34  put_bits(&s->pb, 1, 0); /* unknown bit */
35  put_bits(&s->pb, 5, s->qscale);
36 
37  put_sbits(&s->pb, 8, picture_number); //FIXME wrong, but correct is not known
38  s->mb_x= s->mb_y= 0;
40 
41  put_bits(&s->pb, 1, s->no_rounding);
42 
43  assert(s->f_code == 1);
44  assert(s->unrestricted_mv == 0);
45  assert(s->alt_inter_vlc == 0);
46  assert(s->umvplus == 0);
47  assert(s->modified_quant==1);
48  assert(s->loop_filter==1);
49 
51  if(s->h263_aic){
54  }else{
57  }
58 }
59 
61 
63  .name = "rv20",
64  .long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
65  .type = AVMEDIA_TYPE_VIDEO,
66  .id = AV_CODEC_ID_RV20,
67  .priv_data_size = sizeof(MpegEncContext),
69  .encode2 = ff_mpv_encode_picture,
71  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
72  .priv_class = &rv20_class,
73 };
AVCodec ff_rv20_encoder
Definition: rv20enc.c:62
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:314
static void put_sbits(PutBitContext *pb, int n, int32_t value)
Definition: put_bits.h:172
#define FF_MPV_GENERIC_CLASS(name)
Definition: mpegvideo.h:679
mpegvideo header.
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: rv20enc.c:32
AVCodec.
Definition: avcodec.h:2796
int qscale
QP.
Definition: mpegvideo.h:332
int h263_aic
Advanded INTRA Coding (AIC)
Definition: mpegvideo.h:210
int modified_quant
Definition: mpegvideo.h:494
int alt_inter_vlc
alternative inter vlc
Definition: mpegvideo.h:493
const char * name
Name of the codec implementation.
Definition: avcodec.h:2803
int no_rounding
apply no rounding to motion compensation (MPEG4, msmpeg4, ...) for b-frames rounding mode is always 0...
Definition: mpegvideo.h:406
int unrestricted_mv
mv can point outside of the coded picture
Definition: mpegvideo.h:348
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:150
static void put_bits(PutBitContext *s, int n, unsigned int value)
Write up to 31 bits into a bitstream.
Definition: put_bits.h:134
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63
int umvplus
== H263+ && unrestricted_mv
Definition: mpegvideo.h:490
const uint8_t ff_aic_dc_scale_table[32]
Definition: h263data.h:248
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:65
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:490
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideo.c:55
int ff_mpv_encode_init(AVCodecContext *avctx)
void ff_h263_encode_mba(MpegEncContext *s)
Definition: ituh263enc.c:829
int f_code
forward MV resolution
Definition: mpegvideo.h:362
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:339
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
Definition: mpegvideo.h:315
MpegEncContext.
Definition: mpegvideo.h:204
PutBitContext pb
bit output
Definition: mpegvideo.h:277
int ff_mpv_encode_end(AVCodecContext *avctx)
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:499
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
bitstream writer API