repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Renderware TeXture Dictionary (.txd) demuxer | |
| 3 | * Copyright (c) 2007 Ivo van Poorten | |
| 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 "avformat.h" | |
| 24 | #include "internal.h" | |
| 25 | ||
| 26 | #define TXD_FILE 0x16 | |
| 27 | #define TXD_INFO 0x01 | |
| 28 | #define TXD_EXTRA 0x03 | |
| 29 | #define TXD_TEXTURE 0x15 | |
| 30 | #define TXD_TEXTURE_DATA 0x01 | |
| 31 | #define TXD_MARKER 0x1803ffff | |
| 32 | #define TXD_MARKER2 0x1003ffff | |
| 33 | ||
| 34 | static int txd_probe(AVProbeData * pd) { | |
| 35 | if (AV_RL32(pd->buf ) == TXD_FILE && | |
| 36 | (AV_RL32(pd->buf+8) == TXD_MARKER || AV_RL32(pd->buf+8) == TXD_MARKER2)) | |
| 37 | return AVPROBE_SCORE_MAX; | |
| 38 | return 0; | |
| 39 | } | |
| 40 | ||
| 41 | static int txd_read_header(AVFormatContext *s) { | |
| 42 | AVStream *st; | |
| 43 | ||
| 44 | st = avformat_new_stream(s, NULL); | |
| 45 | if (!st) | |
| 46 | return AVERROR(ENOMEM); | |
| 47 | st->codec->codec_type = AVMEDIA_TYPE_VIDEO; | |
| 48 | st->codec->codec_id = AV_CODEC_ID_TXD; | |
| 49 | avpriv_set_pts_info(st, 64, 1, 5); | |
| 50 | st->avg_frame_rate = av_inv_q(st->time_base); | |
| 51 | /* the parameters will be extracted from the compressed bitstream */ | |
| 52 | ||
| 53 | return 0; | |
| 54 | } | |
| 55 | ||
| 56 | static int txd_read_packet(AVFormatContext *s, AVPacket *pkt) { | |
| 57 | AVIOContext *pb = s->pb; | |
| 58 | unsigned int id, chunk_size, marker; | |
| 59 | int ret; | |
| 60 | ||
| 61 | next_chunk: | |
| 62 | id = avio_rl32(pb); | |
| 63 | chunk_size = avio_rl32(pb); | |
| 64 | marker = avio_rl32(pb); | |
| 65 | ||
| 66 | if (avio_feof(s->pb)) | |
| 67 | return AVERROR_EOF; | |
| 68 | if (marker != TXD_MARKER && marker != TXD_MARKER2) { | |
| 69 | av_log(s, AV_LOG_ERROR, "marker does not match\n"); | |
| 70 | return AVERROR_INVALIDDATA; | |
| 71 | } | |
| 72 | ||
| 73 | switch (id) { | |
| 74 | case TXD_INFO: | |
| 75 | if (chunk_size > 100) | |
| 76 | break; | |
| 77 | case TXD_EXTRA: | |
| 78 | avio_skip(s->pb, chunk_size); | |
| 79 | case TXD_FILE: | |
| 80 | case TXD_TEXTURE: | |
| 81 | goto next_chunk; | |
| 82 | default: | |
| 83 | av_log(s, AV_LOG_ERROR, "unknown chunk id %i\n", id); | |
| 84 | return AVERROR_INVALIDDATA; | |
| 85 | } | |
| 86 | ||
| 87 | ret = av_get_packet(s->pb, pkt, chunk_size); | |
| 88 | if (ret < 0) | |
| 89 | return ret; | |
| 90 | pkt->stream_index = 0; | |
| 91 | ||
| 92 | return 0; | |
| 93 | } | |
| 94 | ||
| 95 | AVInputFormat ff_txd_demuxer = { | |
| 96 | .name = "txd", | |
| 97 | .long_name = NULL_IF_CONFIG_SMALL("Renderware TeXture Dictionary"), | |
| 98 | .read_probe = txd_probe, | |
| 99 | .read_header = txd_read_header, | |
| 100 | .read_packet = txd_read_packet, | |
| 101 | }; |