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rv10enc.c
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1 /*
2  * RV10 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  * RV10 encoder
26  */
27 
28 #include "mpegvideo.h"
29 #include "put_bits.h"
30 #include "rv10.h"
31 
33 {
34  int full_frame= 0;
35 
37 
38  put_bits(&s->pb, 1, 1); /* marker */
39 
40  put_bits(&s->pb, 1, (s->pict_type == AV_PICTURE_TYPE_P));
41 
42  put_bits(&s->pb, 1, 0); /* not PB-mframe */
43 
44  put_bits(&s->pb, 5, s->qscale);
45 
46  if (s->pict_type == AV_PICTURE_TYPE_I) {
47  /* specific MPEG like DC coding not used */
48  }
49  /* if multiple packets per frame are sent, the position at which
50  to display the macroblocks is coded here */
51  if(!full_frame){
52  if (s->mb_width * s->mb_height >= (1U << 12)) {
53  avpriv_report_missing_feature(s->avctx, "Encoding frames with %d (>= 4096) macroblocks",
54  s->mb_width * s->mb_height);
55  return AVERROR(ENOSYS);
56  }
57  put_bits(&s->pb, 6, 0); /* mb_x */
58  put_bits(&s->pb, 6, 0); /* mb_y */
59  put_bits(&s->pb, 12, s->mb_width * s->mb_height);
60  }
61 
62  put_bits(&s->pb, 3, 0); /* ignored */
63  return 0;
64 }
65 
66 static const AVClass rv10_class = {
67  .class_name = "rv10 encoder",
68  .item_name = av_default_item_name,
69  .option = ff_mpv_generic_options,
70  .version = LIBAVUTIL_VERSION_INT,
71 };
72 
74  .name = "rv10",
75  .long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
76  .type = AVMEDIA_TYPE_VIDEO,
77  .id = AV_CODEC_ID_RV10,
78  .priv_data_size = sizeof(MpegEncContext),
80  .encode2 = ff_mpv_encode_picture,
81  .close = ff_mpv_encode_end,
83  .priv_class = &rv10_class,
84 };
const char * s
Definition: avisynth_c.h:768
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:207
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:193
void avpriv_align_put_bits(PutBitContext *s)
Pad the bitstream with zeros up to the next byte boundary.
Definition: bitstream.c:48
static const AVClass rv10_class
Definition: rv10enc.c:66
mpegvideo header.
AVCodec.
Definition: avcodec.h:3351
int qscale
QP.
Definition: mpegvideo.h:201
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
const AVOption ff_mpv_generic_options[]
Definition: mpegvideo_enc.c:85
AVCodec ff_rv10_encoder
Definition: rv10enc.c:73
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
#define U(x)
Definition: vp56_arith.h:37
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
const char * name
Name of the codec implementation.
Definition: avcodec.h:3358
int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: rv10enc.c:32
int ff_mpv_encode_init(AVCodecContext *avctx)
Describe the class of an AVClass context structure.
Definition: log.h:67
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:266
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
MpegEncContext.
Definition: mpegvideo.h:78
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
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)
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
Predicted.
Definition: avutil.h:275
bitstream writer API