3 * Copyright (c) 2000,2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer
6 * This file is part of FFmpeg.
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.
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.
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
28 #include "mpegvideo.h"
31 int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number)
35 avpriv_align_put_bits(&s->pb);
37 put_bits(&s->pb, 1, 1); /* marker */
39 put_bits(&s->pb, 1, (s->pict_type == AV_PICTURE_TYPE_P));
41 put_bits(&s->pb, 1, 0); /* not PB frame */
43 put_bits(&s->pb, 5, s->qscale);
45 if (s->pict_type == AV_PICTURE_TYPE_I) {
46 /* specific MPEG like DC coding not used */
48 /* if multiple packets per frame are sent, the position at which
49 to display the macroblocks is coded here */
51 if (s->mb_width * s->mb_height >= (1U << 12)) {
52 avpriv_report_missing_feature(s->avctx, "Encoding frames with %d (>= 4096) macroblocks",
53 s->mb_width * s->mb_height);
54 return AVERROR(ENOSYS);
56 put_bits(&s->pb, 6, 0); /* mb_x */
57 put_bits(&s->pb, 6, 0); /* mb_y */
58 put_bits(&s->pb, 12, s->mb_width * s->mb_height);
61 put_bits(&s->pb, 3, 0); /* ignored */
65 FF_MPV_GENERIC_CLASS(rv10)
67 AVCodec ff_rv10_encoder = {
69 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
70 .type = AVMEDIA_TYPE_VIDEO,
71 .id = AV_CODEC_ID_RV10,
72 .priv_data_size = sizeof(MpegEncContext),
73 .init = ff_mpv_encode_init,
74 .encode2 = ff_mpv_encode_picture,
75 .close = ff_mpv_encode_end,
76 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
77 .priv_class = &rv10_class,