| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 "demux.h" | ||
| 25 | #include "internal.h" | ||
| 26 | |||
| 27 | #define TXD_FILE 0x16 | ||
| 28 | #define TXD_INFO 0x01 | ||
| 29 | #define TXD_EXTRA 0x03 | ||
| 30 | #define TXD_TEXTURE 0x15 | ||
| 31 | #define TXD_TEXTURE_DATA 0x01 | ||
| 32 | #define TXD_MARKER 0x1803ffff | ||
| 33 | #define TXD_MARKER2 0x1003ffff | ||
| 34 | |||
| 35 | 7186 | static int txd_probe(const AVProbeData * pd) { | |
| 36 |
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7186 | if (AV_RL32(pd->buf ) == TXD_FILE && |
| 37 |
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3 | (AV_RL32(pd->buf+8) == TXD_MARKER || AV_RL32(pd->buf+8) == TXD_MARKER2)) |
| 38 | 3 | return AVPROBE_SCORE_MAX; | |
| 39 | 7183 | return 0; | |
| 40 | } | ||
| 41 | |||
| 42 | 3 | static int txd_read_header(AVFormatContext *s) { | |
| 43 | AVStream *st; | ||
| 44 | |||
| 45 | 3 | st = avformat_new_stream(s, NULL); | |
| 46 |
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3 | if (!st) |
| 47 | ✗ | return AVERROR(ENOMEM); | |
| 48 | 3 | st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; | |
| 49 | 3 | st->codecpar->codec_id = AV_CODEC_ID_TXD; | |
| 50 | 3 | avpriv_set_pts_info(st, 64, 1, 5); | |
| 51 | 3 | st->avg_frame_rate = av_inv_q(st->time_base); | |
| 52 | /* the parameters will be extracted from the compressed bitstream */ | ||
| 53 | |||
| 54 | 3 | return 0; | |
| 55 | } | ||
| 56 | |||
| 57 | 19 | static int txd_read_packet(AVFormatContext *s, AVPacket *pkt) { | |
| 58 | 19 | AVIOContext *pb = s->pb; | |
| 59 | unsigned int id, chunk_size, marker; | ||
| 60 | int ret; | ||
| 61 | |||
| 62 | 54 | next_chunk: | |
| 63 | 54 | id = avio_rl32(pb); | |
| 64 | 54 | chunk_size = avio_rl32(pb); | |
| 65 | 54 | marker = avio_rl32(pb); | |
| 66 | |||
| 67 |
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54 | if (avio_feof(s->pb)) |
| 68 | 6 | return AVERROR_EOF; | |
| 69 |
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48 | if (marker != TXD_MARKER && marker != TXD_MARKER2) { |
| 70 | ✗ | av_log(s, AV_LOG_ERROR, "marker does not match\n"); | |
| 71 | ✗ | return AVERROR_INVALIDDATA; | |
| 72 | } | ||
| 73 | |||
| 74 |
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48 | switch (id) { |
| 75 | 16 | case TXD_INFO: | |
| 76 |
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16 | if (chunk_size > 100) |
| 77 | 13 | break; | |
| 78 | case TXD_EXTRA: | ||
| 79 | 19 | avio_skip(s->pb, chunk_size); | |
| 80 | 35 | case TXD_FILE: | |
| 81 | case TXD_TEXTURE: | ||
| 82 | 35 | goto next_chunk; | |
| 83 | ✗ | default: | |
| 84 | ✗ | av_log(s, AV_LOG_ERROR, "unknown chunk id %i\n", id); | |
| 85 | ✗ | return AVERROR_INVALIDDATA; | |
| 86 | } | ||
| 87 | |||
| 88 | 13 | ret = av_get_packet(s->pb, pkt, chunk_size); | |
| 89 |
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13 | if (ret < 0) |
| 90 | ✗ | return ret; | |
| 91 | 13 | pkt->stream_index = 0; | |
| 92 | |||
| 93 | 13 | return 0; | |
| 94 | } | ||
| 95 | |||
| 96 | const FFInputFormat ff_txd_demuxer = { | ||
| 97 | .p.name = "txd", | ||
| 98 | .p.long_name = NULL_IF_CONFIG_SMALL("Renderware TeXture Dictionary"), | ||
| 99 | .read_probe = txd_probe, | ||
| 100 | .read_header = txd_read_header, | ||
| 101 | .read_packet = txd_read_packet, | ||
| 102 | }; | ||
| 103 |