| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * a64 muxer | ||
| 3 | * Copyright (c) 2009 Tobias Bindhammer | ||
| 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 "libavutil/intreadwrite.h" | ||
| 23 | #include "libavcodec/codec_id.h" | ||
| 24 | #include "libavcodec/codec_par.h" | ||
| 25 | #include "avformat.h" | ||
| 26 | #include "mux.h" | ||
| 27 | #include "rawenc.h" | ||
| 28 | |||
| 29 | ✗ | static int a64_write_header(AVFormatContext *s) | |
| 30 | { | ||
| 31 | ✗ | AVCodecParameters *par = s->streams[0]->codecpar; | |
| 32 | ✗ | uint8_t header[5] = { | |
| 33 | 0x00, //load | ||
| 34 | 0x40, //address | ||
| 35 | 0x00, //mode | ||
| 36 | 0x00, //charset_lifetime (multi only) | ||
| 37 | 0x00 //fps in 50/fps; | ||
| 38 | }; | ||
| 39 | |||
| 40 | ✗ | if (par->extradata_size < 4) { | |
| 41 | ✗ | av_log(s, AV_LOG_ERROR, "Missing extradata\n"); | |
| 42 | ✗ | return AVERROR_INVALIDDATA; | |
| 43 | } | ||
| 44 | |||
| 45 | ✗ | switch (par->codec_id) { | |
| 46 | ✗ | case AV_CODEC_ID_A64_MULTI: | |
| 47 | ✗ | header[2] = 0x00; | |
| 48 | ✗ | header[3] = AV_RB32(par->extradata+0); | |
| 49 | ✗ | header[4] = 2; | |
| 50 | ✗ | break; | |
| 51 | ✗ | case AV_CODEC_ID_A64_MULTI5: | |
| 52 | ✗ | header[2] = 0x01; | |
| 53 | ✗ | header[3] = AV_RB32(par->extradata+0); | |
| 54 | ✗ | header[4] = 3; | |
| 55 | ✗ | break; | |
| 56 | ✗ | default: | |
| 57 | ✗ | return AVERROR_INVALIDDATA; | |
| 58 | } | ||
| 59 | ✗ | avio_write(s->pb, header, 2); | |
| 60 | ✗ | return 0; | |
| 61 | } | ||
| 62 | |||
| 63 | const FFOutputFormat ff_a64_muxer = { | ||
| 64 | .p.name = "a64", | ||
| 65 | .p.long_name = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"), | ||
| 66 | .p.extensions = "a64, A64", | ||
| 67 | .p.video_codec = AV_CODEC_ID_A64_MULTI, | ||
| 68 | .p.audio_codec = AV_CODEC_ID_NONE, | ||
| 69 | .p.subtitle_codec = AV_CODEC_ID_NONE, | ||
| 70 | .flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH, | ||
| 71 | .write_header = a64_write_header, | ||
| 72 | .write_packet = ff_raw_write_packet, | ||
| 73 | }; | ||
| 74 |