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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 "put_bits.h"
32 
33 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number){
34  put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ?
35  put_bits(&s->pb, 1, 0); /* unknown bit */
36  put_bits(&s->pb, 5, s->qscale);
37 
38  put_sbits(&s->pb, 8, picture_number); //FIXME wrong, but correct is not known
39  s->mb_x= s->mb_y= 0;
41 
42  put_bits(&s->pb, 1, s->no_rounding);
43 
44  av_assert0(s->f_code == 1);
45  av_assert0(s->unrestricted_mv == 0);
46  av_assert0(s->alt_inter_vlc == 0);
47  av_assert0(s->umvplus == 0);
49  av_assert0(s->loop_filter==1);
50 
52  if(s->h263_aic){
55  }else{
58  }
59 }
60 
62 
64  .name = "rv20",
65  .long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
66  .type = AVMEDIA_TYPE_VIDEO,
67  .id = AV_CODEC_ID_RV20,
68  .priv_data_size = sizeof(MpegEncContext),
70  .encode2 = ff_mpv_encode_picture,
71  .close = ff_mpv_encode_end,
72  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
73  .priv_class = &rv20_class,
74 };
AVCodec ff_rv20_encoder
Definition: rv20enc.c:63
const char * s
Definition: avisynth_c.h:631
const uint8_t * y_dc_scale_table
qscale -> y_dc_scale table
Definition: mpegvideo.h:257
static void put_sbits(PutBitContext *pb, int n, int32_t value)
Definition: put_bits.h:192
#define FF_MPV_GENERIC_CLASS(name)
Definition: mpegvideo.h:662
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:160
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:33
AVCodec.
Definition: avcodec.h:3181
int qscale
QP.
Definition: mpegvideo.h:273
int h263_aic
Advanded INTRA Coding (AIC)
Definition: mpegvideo.h:156
int modified_quant
Definition: mpegvideo.h:444
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int alt_inter_vlc
alternative inter vlc
Definition: mpegvideo.h:443
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideodata.c:27
int no_rounding
apply no rounding to motion compensation (MPEG4, msmpeg4, ...) for b-frames rounding mode is always 0...
Definition: mpegvideo.h:351
int unrestricted_mv
mv can point outside of the coded picture
Definition: mpegvideo.h:292
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
const char * name
Name of the codec implementation.
Definition: avcodec.h:3188
int umvplus
== H263+ && unrestricted_mv
Definition: mpegvideo.h:440
const uint8_t ff_aic_dc_scale_table[32]
Definition: h263data.h:248
int ff_mpv_encode_init(AVCodecContext *avctx)
void ff_h263_encode_mba(MpegEncContext *s)
Definition: ituh263enc.c:825
int f_code
forward MV resolution
Definition: mpegvideo.h:307
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:281
const uint8_t * c_dc_scale_table
qscale -> c_dc_scale table
Definition: mpegvideo.h:258
MpegEncContext.
Definition: mpegvideo.h:150
PutBitContext pb
bit output
Definition: mpegvideo.h:220
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:63
int ff_mpv_encode_end(AVCodecContext *avctx)
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
bitstream writer API