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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 FFmpeg.
7  *
8  * FFmpeg 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  * FFmpeg 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 FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * RV20 encoder
26  */
27 
28 #include "mpegvideo.h"
29 #include "mpegvideodata.h"
30 #include "h263.h"
31 #include "h263data.h"
32 #include "put_bits.h"
33 #include "rv10.h"
34 
35 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number){
36  put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ?
37  put_bits(&s->pb, 1, 0); /* unknown bit */
38  put_bits(&s->pb, 5, s->qscale);
39 
40  put_sbits(&s->pb, 8, picture_number); //FIXME wrong, but correct is not known
41  s->mb_x= s->mb_y= 0;
43 
44  put_bits(&s->pb, 1, s->no_rounding);
45 
46  av_assert0(s->f_code == 1);
47  av_assert0(s->unrestricted_mv == 0);
48  av_assert0(s->alt_inter_vlc == 0);
49  av_assert0(s->umvplus == 0);
51  av_assert0(s->loop_filter==1);
52 
54  if(s->h263_aic){
57  }else{
60  }
61 }
62 
63 static const AVClass rv20_class = {
64  .class_name = "rv20 encoder",
65  .item_name = av_default_item_name,
66  .option = ff_mpv_generic_options,
67  .version = LIBAVUTIL_VERSION_INT,
68 };
69 
71  .name = "rv20",
72  .long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
73  .type = AVMEDIA_TYPE_VIDEO,
74  .id = AV_CODEC_ID_RV20,
75  .priv_data_size = sizeof(MpegEncContext),
77  .encode2 = ff_mpv_encode_picture,
78  .close = ff_mpv_encode_end,
80  .priv_class = &rv20_class,
81 };
AVCodec ff_rv20_encoder
Definition: rv20enc.c:70
const char * s
Definition: avisynth_c.h:631
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:185
static void put_sbits(PutBitContext *pb, int n, int32_t value)
Definition: put_bits.h:200
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:206
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
mpegvideo header.
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: rv20enc.c:35
AVCodec.
Definition: avcodec.h:3559
int qscale
QP.
Definition: mpegvideo.h:201
int h263_aic
Advanced INTRA Coding (AIC)
Definition: mpegvideo.h:84
int modified_quant
Definition: mpegvideo.h:379
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int alt_inter_vlc
alternative inter vlc
Definition: mpegvideo.h:378
const AVOption ff_mpv_generic_options[]
Definition: mpegvideo_enc.c:84
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideodata.c:34
int no_rounding
apply no rounding to motion compensation (MPEG-4, msmpeg4, ...) for B-frames rounding mode is always ...
Definition: mpegvideo.h:284
H.263 tables.
av_default_item_name
int unrestricted_mv
mv can point outside of the coded picture
Definition: mpegvideo.h:220
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
const char * name
Name of the codec implementation.
Definition: avcodec.h:3566
int umvplus
== H.263+ && unrestricted_mv
Definition: mpegvideo.h:375
const uint8_t ff_aic_dc_scale_table[32]
Definition: h263data.c:247
int ff_mpv_encode_init(AVCodecContext *avctx)
void ff_h263_encode_mba(MpegEncContext *s)
Definition: ituh263enc.c:825
Describe the class of an AVClass context structure.
Definition: log.h:67
int f_code
forward MV resolution
Definition: mpegvideo.h:235
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:209
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
Definition: mpegvideo.h:186
MpegEncContext.
Definition: mpegvideo.h:78
PutBitContext pb
bit output
Definition: mpegvideo.h:148
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
int ff_mpv_encode_end(AVCodecContext *avctx)
static const AVClass rv20_class
Definition: rv20enc.c:63
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
bitstream writer API