blob: 8122efef835d334f3315e277fe33da577d5e0368
| 1 | /* |
| 2 | * id RoQ (.roq) File muxer |
| 3 | * Copyright (c) 2007 Vitor Sessak |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #include "avformat.h" |
| 23 | #include "rawenc.h" |
| 24 | |
| 25 | |
| 26 | static int roq_write_header(struct AVFormatContext *s) |
| 27 | { |
| 28 | uint8_t header[] = { |
| 29 | 0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, /* fps: */ 0x1E, 0x00 |
| 30 | }; |
| 31 | int n; |
| 32 | |
| 33 | // set the actual fps |
| 34 | for(n=0;n<s->nb_streams;n++) { |
| 35 | if (s->streams[n]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
| 36 | unsigned int fps; |
| 37 | |
| 38 | if (s->streams[n]->avg_frame_rate.den != 1) { |
| 39 | av_log(s, AV_LOG_ERROR, "Frame rate must be integer\n"); |
| 40 | return AVERROR(EINVAL); |
| 41 | } |
| 42 | |
| 43 | if ((fps=s->streams[n]->avg_frame_rate.num) > 255) { |
| 44 | av_log(s, AV_LOG_ERROR, "Frame rate may not exceed 255fps\n"); |
| 45 | return AVERROR(EINVAL); |
| 46 | } |
| 47 | |
| 48 | if (fps != 30) { |
| 49 | av_log(s, AV_LOG_WARNING, "For vintage compatibility fps must be 30\n"); |
| 50 | } |
| 51 | |
| 52 | header[6] = fps; |
| 53 | break; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | avio_write(s->pb, header, 8); |
| 58 | avio_flush(s->pb); |
| 59 | |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | AVOutputFormat ff_roq_muxer = { |
| 64 | .name = "roq", |
| 65 | .long_name = NULL_IF_CONFIG_SMALL("raw id RoQ"), |
| 66 | .extensions = "roq", |
| 67 | .audio_codec = AV_CODEC_ID_ROQ_DPCM, |
| 68 | .video_codec = AV_CODEC_ID_ROQ, |
| 69 | .write_header = roq_write_header, |
| 70 | .write_packet = ff_raw_write_packet, |
| 71 | }; |
| 72 |