blob: 8691d1880ec64e5bf827dcf18c742c2d9cf40614
| 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 | |
| 32 | int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number) |
| 33 | { |
| 34 | int full_frame= 0; |
| 35 | |
| 36 | avpriv_align_put_bits(&s->pb); |
| 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 | |
| 73 | AVCodec ff_rv10_encoder = { |
| 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), |
| 79 | .init = ff_mpv_encode_init, |
| 80 | .encode2 = ff_mpv_encode_picture, |
| 81 | .close = ff_mpv_encode_end, |
| 82 | .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, |
| 83 | .priv_class = &rv10_class, |
| 84 | }; |
| 85 |