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 "codec_internal.h"
29 #include "mpegvideo.h"
30 #include "mpegvideodata.h"
31 #include "mpegvideoenc.h"
32 #include "h263data.h"
33 #include "h263enc.h"
34 #include "put_bits.h"
35 #include "rv10enc.h"
36 
37 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number){
38  put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ?
39  put_bits(&s->pb, 1, 0); /* unknown bit */
40  put_bits(&s->pb, 5, s->qscale);
41 
42  put_sbits(&s->pb, 8, picture_number); //FIXME wrong, but correct is not known
43  s->mb_x= s->mb_y= 0;
45 
46  put_bits(&s->pb, 1, s->no_rounding);
47 
48  av_assert0(s->f_code == 1);
49  av_assert0(s->unrestricted_mv == 0);
50  av_assert0(s->alt_inter_vlc == 0);
51  av_assert0(s->umvplus == 0);
52  av_assert0(s->modified_quant==1);
53  av_assert0(s->loop_filter==1);
54 
55  s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I;
56  if(s->h263_aic){
57  s->y_dc_scale_table=
58  s->c_dc_scale_table= ff_aic_dc_scale_table;
59  }else{
60  s->y_dc_scale_table=
61  s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
62  }
63 }
64 
66  .p.name = "rv20",
67  CODEC_LONG_NAME("RealVideo 2.0"),
68  .p.type = AVMEDIA_TYPE_VIDEO,
69  .p.id = AV_CODEC_ID_RV20,
70  .p.priv_class = &ff_mpv_enc_class,
71  .priv_data_size = sizeof(MpegEncContext),
74  .close = ff_mpv_encode_end,
75  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
76  .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
77 };
ff_h263_encode_mba
void ff_h263_encode_mba(MpegEncContext *s)
Definition: ituh263enc.c:871
h263data.h
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
ff_mpv_enc_class
const AVClass ff_mpv_enc_class
Definition: mpegvideo_enc.c:101
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: codec_internal.h:42
mpegvideoenc.h
put_sbits
static void put_sbits(PutBitContext *pb, int n, int32_t value)
Definition: put_bits.h:281
ff_rv20_encoder
const FFCodec ff_rv20_encoder
Definition: rv20enc.c:65
h263enc.h
put_bits
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:221
FFCodec
Definition: codec_internal.h:119
mpegvideo.h
ff_rv20_encode_picture_header
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: rv20enc.c:37
ff_mpv_encode_picture
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic_arg, int *got_packet)
Definition: mpegvideo_enc.c:1744
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:123
FF_CODEC_ENCODE_CB
#define FF_CODEC_ENCODE_CB(func)
Definition: codec_internal.h:307
s
#define s(width, name)
Definition: cbs_vp9.c:256
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:363
ff_mpeg1_dc_scale_table
static const uint8_t *const ff_mpeg1_dc_scale_table
Definition: mpegvideodata.h:32
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
rv10enc.h
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
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:264
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
ff_mpv_encode_end
av_cold int ff_mpv_encode_end(AVCodecContext *avctx)
Definition: mpegvideo_enc.c:980
codec_internal.h
mpegvideodata.h
AV_CODEC_ID_RV20
@ AV_CODEC_ID_RV20
Definition: codec_id.h:58
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:211
ff_aic_dc_scale_table
const uint8_t ff_aic_dc_scale_table[32]
Definition: h263data.c:245
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ff_mpv_encode_init
av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
Definition: mpegvideo_enc.c:311
put_bits.h
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:70