FFmpeg
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);
50  av_assert0(s->modified_quant==1);
51  av_assert0(s->loop_filter==1);
52 
53  s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I;
54  if(s->h263_aic){
55  s->y_dc_scale_table=
56  s->c_dc_scale_table= ff_aic_dc_scale_table;
57  }else{
58  s->y_dc_scale_table=
59  s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
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,
79  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
81  .priv_class = &rv20_class,
82 };
AVCodec
AVCodec.
Definition: codec.h:197
h263data.h
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
ff_mpeg1_dc_scale_table
const uint8_t ff_mpeg1_dc_scale_table[128]
Definition: mpegvideodata.c:33
put_sbits
static void put_sbits(PutBitContext *pb, int n, int32_t value)
Definition: put_bits.h:290
put_bits
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:218
mpegvideo.h
ff_rv20_encode_picture_header
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: rv20enc.c:35
s
#define s(width, name)
Definition: cbs_vp9.c:257
ff_mpv_encode_init
int ff_mpv_encode_init(AVCodecContext *avctx)
Definition: mpegvideo_enc.c:302
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
ff_mpv_encode_picture
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: mpegvideo_enc.c:1786
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:303
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
ff_h263_encode_mba
void ff_h263_encode_mba(MpegEncContext *s)
Definition: ituh263enc.c:822
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
mpegvideodata.h
ff_mpv_generic_options
const AVOption ff_mpv_generic_options[]
Definition: mpegvideo_enc.c:87
rv10.h
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:49
AV_CODEC_ID_RV20
@ AV_CODEC_ID_RV20
Definition: codec_id.h:55
ff_mpv_encode_end
int ff_mpv_encode_end(AVCodecContext *avctx)
Definition: mpegvideo_enc.c:1023
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:204
AVClass::class_name
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
ff_aic_dc_scale_table
const uint8_t ff_aic_dc_scale_table[32]
Definition: h263data.c:247
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
rv20_class
static const AVClass rv20_class
Definition: rv20enc.c:63
put_bits.h
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:81
ff_rv20_encoder
AVCodec ff_rv20_encoder
Definition: rv20enc.c:70
h263.h