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| Rev | Author | Line No. | Line |
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| 4349 | Serge | 1 | /* |
| 2 | * Sony Playstation (PSX) STR File Demuxer |
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| 3 | * Copyright (c) 2003 The ffmpeg Project |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * @file |
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| 24 | * PSX STR file demuxer |
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| 25 | * by Mike Melanson (melanson@pcisys.net) |
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| 26 | * This module handles streams that have been ripped from Sony Playstation |
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| 27 | * CD games. This demuxer can handle either raw STR files (which are just |
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| 28 | * concatenations of raw compact disc sectors) or STR files with 0x2C-byte |
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| 29 | * RIFF headers, followed by CD sectors. |
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| 30 | */ |
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| 31 | |||
| 32 | #include "libavutil/channel_layout.h" |
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| 33 | #include "libavutil/internal.h" |
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| 34 | #include "libavutil/intreadwrite.h" |
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| 35 | #include "avformat.h" |
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| 36 | #include "internal.h" |
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| 37 | |||
| 38 | #define RIFF_TAG MKTAG('R', 'I', 'F', 'F') |
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| 39 | #define CDXA_TAG MKTAG('C', 'D', 'X', 'A') |
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| 40 | |||
| 41 | #define RAW_CD_SECTOR_SIZE 2352 |
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| 42 | #define RAW_CD_SECTOR_DATA_SIZE 2304 |
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| 43 | #define VIDEO_DATA_CHUNK_SIZE 0x7E0 |
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| 44 | #define VIDEO_DATA_HEADER_SIZE 0x38 |
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| 45 | #define RIFF_HEADER_SIZE 0x2C |
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| 46 | |||
| 47 | #define CDXA_TYPE_MASK 0x0E |
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| 48 | #define CDXA_TYPE_DATA 0x08 |
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| 49 | #define CDXA_TYPE_AUDIO 0x04 |
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| 50 | #define CDXA_TYPE_VIDEO 0x02 |
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| 51 | |||
| 52 | #define STR_MAGIC (0x80010160) |
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| 53 | |||
| 54 | typedef struct StrChannel { |
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| 55 | /* video parameters */ |
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| 56 | int video_stream_index; |
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| 57 | AVPacket tmp_pkt; |
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| 58 | |||
| 59 | /* audio parameters */ |
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| 60 | int audio_stream_index; |
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| 61 | } StrChannel; |
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| 62 | |||
| 63 | typedef struct StrDemuxContext { |
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| 64 | |||
| 65 | /* a STR file can contain up to 32 channels of data */ |
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| 66 | StrChannel channels[32]; |
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| 67 | } StrDemuxContext; |
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| 68 | |||
| 69 | static const uint8_t sync_header[12] = {0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x00}; |
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| 70 | |||
| 71 | static int str_probe(AVProbeData *p) |
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| 72 | { |
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| 73 | const uint8_t *sector= p->buf; |
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| 74 | const uint8_t *end= sector + p->buf_size; |
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| 75 | int aud=0, vid=0; |
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| 76 | |||
| 77 | if (p->buf_size < RAW_CD_SECTOR_SIZE) |
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| 78 | return 0; |
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| 79 | |||
| 80 | if ((AV_RL32(&p->buf[0]) == RIFF_TAG) && |
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| 81 | (AV_RL32(&p->buf[8]) == CDXA_TAG)) { |
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| 82 | |||
| 83 | /* RIFF header seen; skip 0x2C bytes */ |
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| 84 | sector += RIFF_HEADER_SIZE; |
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| 85 | } |
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| 86 | |||
| 87 | while (end - sector >= RAW_CD_SECTOR_SIZE) { |
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| 88 | /* look for CD sync header (00, 0xFF x 10, 00) */ |
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| 89 | if (memcmp(sector,sync_header,sizeof(sync_header))) |
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| 90 | return 0; |
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| 91 | |||
| 92 | if (sector[0x11] >= 32) |
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| 93 | return 0; |
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| 94 | |||
| 95 | switch (sector[0x12] & CDXA_TYPE_MASK) { |
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| 96 | case CDXA_TYPE_DATA: |
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| 97 | case CDXA_TYPE_VIDEO: { |
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| 98 | int current_sector = AV_RL16(§or[0x1C]); |
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| 99 | int sector_count = AV_RL16(§or[0x1E]); |
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| 100 | int frame_size = AV_RL32(§or[0x24]); |
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| 101 | |||
| 102 | if(!( frame_size>=0 |
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| 103 | && current_sector < sector_count |
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| 104 | && sector_count*VIDEO_DATA_CHUNK_SIZE >=frame_size)){ |
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| 105 | return 0; |
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| 106 | } |
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| 107 | |||
| 108 | /*st->codec->width = AV_RL16(§or[0x28]); |
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| 109 | st->codec->height = AV_RL16(§or[0x2A]);*/ |
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| 110 | |||
| 111 | // if (current_sector == sector_count-1) { |
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| 112 | vid++; |
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| 113 | // } |
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| 114 | |||
| 115 | } |
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| 116 | break; |
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| 117 | case CDXA_TYPE_AUDIO: |
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| 118 | if(sector[0x13]&0x2A) |
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| 119 | return 0; |
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| 120 | aud++; |
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| 121 | break; |
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| 122 | default: |
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| 123 | if(sector[0x12] & CDXA_TYPE_MASK) |
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| 124 | return 0; |
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| 125 | } |
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| 126 | sector += RAW_CD_SECTOR_SIZE; |
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| 127 | } |
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| 128 | /* MPEG files (like those ripped from VCDs) can also look like this; |
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| 129 | * only return half certainty */ |
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| 130 | if(vid+aud > 3) return AVPROBE_SCORE_EXTENSION; |
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| 131 | else if(vid+aud) return 1; |
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| 132 | else return 0; |
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| 133 | } |
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| 134 | |||
| 135 | static int str_read_header(AVFormatContext *s) |
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| 136 | { |
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| 137 | AVIOContext *pb = s->pb; |
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| 138 | StrDemuxContext *str = s->priv_data; |
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| 139 | unsigned char sector[RAW_CD_SECTOR_SIZE]; |
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| 140 | int start; |
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| 141 | int i; |
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| 142 | |||
| 143 | /* skip over any RIFF header */ |
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| 144 | if (avio_read(pb, sector, RIFF_HEADER_SIZE) != RIFF_HEADER_SIZE) |
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| 145 | return AVERROR(EIO); |
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| 146 | if (AV_RL32(§or[0]) == RIFF_TAG) |
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| 147 | start = RIFF_HEADER_SIZE; |
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| 148 | else |
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| 149 | start = 0; |
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| 150 | |||
| 151 | avio_seek(pb, start, SEEK_SET); |
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| 152 | |||
| 153 | for(i=0; i<32; i++){ |
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| 154 | str->channels[i].video_stream_index= |
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| 155 | str->channels[i].audio_stream_index= -1; |
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| 156 | } |
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| 157 | |||
| 158 | s->ctx_flags |= AVFMTCTX_NOHEADER; |
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| 159 | |||
| 160 | return 0; |
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| 161 | } |
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| 162 | |||
| 163 | static int str_read_packet(AVFormatContext *s, |
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| 164 | AVPacket *ret_pkt) |
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| 165 | { |
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| 166 | AVIOContext *pb = s->pb; |
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| 167 | StrDemuxContext *str = s->priv_data; |
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| 168 | unsigned char sector[RAW_CD_SECTOR_SIZE]; |
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| 169 | int channel; |
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| 170 | AVPacket *pkt; |
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| 171 | AVStream *st; |
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| 172 | |||
| 173 | while (1) { |
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| 174 | |||
| 175 | if (avio_read(pb, sector, RAW_CD_SECTOR_SIZE) != RAW_CD_SECTOR_SIZE) |
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| 176 | return AVERROR(EIO); |
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| 177 | |||
| 178 | channel = sector[0x11]; |
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| 179 | if (channel >= 32) |
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| 180 | return AVERROR_INVALIDDATA; |
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| 181 | |||
| 182 | switch (sector[0x12] & CDXA_TYPE_MASK) { |
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| 183 | |||
| 184 | case CDXA_TYPE_DATA: |
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| 185 | case CDXA_TYPE_VIDEO: |
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| 186 | { |
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| 187 | |||
| 188 | int current_sector = AV_RL16(§or[0x1C]); |
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| 189 | int sector_count = AV_RL16(§or[0x1E]); |
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| 190 | int frame_size = AV_RL32(§or[0x24]); |
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| 191 | |||
| 192 | if(!( frame_size>=0 |
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| 193 | && current_sector < sector_count |
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| 194 | && sector_count*VIDEO_DATA_CHUNK_SIZE >=frame_size)){ |
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| 195 | av_log(s, AV_LOG_ERROR, "Invalid parameters %d %d %d\n", current_sector, sector_count, frame_size); |
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| 196 | break; |
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| 197 | } |
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| 198 | |||
| 199 | if(str->channels[channel].video_stream_index < 0){ |
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| 200 | /* allocate a new AVStream */ |
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| 201 | st = avformat_new_stream(s, NULL); |
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| 202 | if (!st) |
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| 203 | return AVERROR(ENOMEM); |
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| 204 | avpriv_set_pts_info(st, 64, 1, 15); |
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| 205 | |||
| 206 | str->channels[channel].video_stream_index = st->index; |
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| 207 | |||
| 208 | st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
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| 209 | st->codec->codec_id = AV_CODEC_ID_MDEC; |
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| 210 | st->codec->codec_tag = 0; /* no fourcc */ |
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| 211 | st->codec->width = AV_RL16(§or[0x28]); |
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| 212 | st->codec->height = AV_RL16(§or[0x2A]); |
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| 213 | } |
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| 214 | |||
| 215 | /* if this is the first sector of the frame, allocate a pkt */ |
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| 216 | pkt = &str->channels[channel].tmp_pkt; |
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| 217 | |||
| 218 | if(pkt->size != sector_count*VIDEO_DATA_CHUNK_SIZE){ |
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| 219 | if(pkt->data) |
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| 220 | av_log(s, AV_LOG_ERROR, "missmatching sector_count\n"); |
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| 221 | av_free_packet(pkt); |
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| 222 | if (av_new_packet(pkt, sector_count*VIDEO_DATA_CHUNK_SIZE)) |
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| 223 | return AVERROR(EIO); |
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| 224 | |||
| 225 | pkt->pos= avio_tell(pb) - RAW_CD_SECTOR_SIZE; |
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| 226 | pkt->stream_index = |
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| 227 | str->channels[channel].video_stream_index; |
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| 228 | } |
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| 229 | |||
| 230 | memcpy(pkt->data + current_sector*VIDEO_DATA_CHUNK_SIZE, |
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| 231 | sector + VIDEO_DATA_HEADER_SIZE, |
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| 232 | VIDEO_DATA_CHUNK_SIZE); |
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| 233 | |||
| 234 | if (current_sector == sector_count-1) { |
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| 235 | pkt->size= frame_size; |
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| 236 | *ret_pkt = *pkt; |
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| 237 | pkt->data= NULL; |
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| 238 | pkt->size= -1; |
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| 239 | pkt->buf = NULL; |
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| 240 | #if FF_API_DESTRUCT_PACKET |
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| 241 | FF_DISABLE_DEPRECATION_WARNINGS |
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| 242 | pkt->destruct = NULL; |
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| 243 | FF_ENABLE_DEPRECATION_WARNINGS |
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| 244 | #endif |
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| 245 | return 0; |
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| 246 | } |
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| 247 | |||
| 248 | } |
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| 249 | break; |
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| 250 | |||
| 251 | case CDXA_TYPE_AUDIO: |
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| 252 | if(str->channels[channel].audio_stream_index < 0){ |
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| 253 | int fmt = sector[0x13]; |
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| 254 | /* allocate a new AVStream */ |
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| 255 | st = avformat_new_stream(s, NULL); |
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| 256 | if (!st) |
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| 257 | return AVERROR(ENOMEM); |
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| 258 | |||
| 259 | str->channels[channel].audio_stream_index = st->index; |
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| 260 | |||
| 261 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
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| 262 | st->codec->codec_id = AV_CODEC_ID_ADPCM_XA; |
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| 263 | st->codec->codec_tag = 0; /* no fourcc */ |
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| 264 | if (fmt & 1) { |
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| 265 | st->codec->channels = 2; |
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| 266 | st->codec->channel_layout = AV_CH_LAYOUT_STEREO; |
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| 267 | } else { |
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| 268 | st->codec->channels = 1; |
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| 269 | st->codec->channel_layout = AV_CH_LAYOUT_MONO; |
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| 270 | } |
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| 271 | st->codec->sample_rate = (fmt&4)?18900:37800; |
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| 272 | // st->codec->bit_rate = 0; //FIXME; |
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| 273 | st->codec->block_align = 128; |
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| 274 | |||
| 275 | avpriv_set_pts_info(st, 64, 18 * 224 / st->codec->channels, |
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| 276 | st->codec->sample_rate); |
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| 277 | st->start_time = 0; |
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| 278 | } |
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| 279 | pkt = ret_pkt; |
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| 280 | if (av_new_packet(pkt, 2304)) |
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| 281 | return AVERROR(EIO); |
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| 282 | memcpy(pkt->data,sector+24,2304); |
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| 283 | |||
| 284 | pkt->stream_index = |
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| 285 | str->channels[channel].audio_stream_index; |
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| 286 | pkt->duration = 1; |
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| 287 | return 0; |
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| 288 | default: |
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| 289 | av_log(s, AV_LOG_WARNING, "Unknown sector type %02X\n", sector[0x12]); |
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| 290 | /* drop the sector and move on */ |
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| 291 | break; |
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| 292 | } |
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| 293 | |||
| 294 | if (url_feof(pb)) |
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| 295 | return AVERROR(EIO); |
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| 296 | } |
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| 297 | } |
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| 298 | |||
| 299 | static int str_read_close(AVFormatContext *s) |
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| 300 | { |
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| 301 | StrDemuxContext *str = s->priv_data; |
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| 302 | int i; |
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| 303 | for(i=0; i<32; i++){ |
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| 304 | if(str->channels[i].tmp_pkt.data) |
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| 305 | av_free_packet(&str->channels[i].tmp_pkt); |
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| 306 | } |
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| 307 | |||
| 308 | return 0; |
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| 309 | } |
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| 310 | |||
| 311 | AVInputFormat ff_str_demuxer = { |
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| 312 | .name = "psxstr", |
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| 313 | .long_name = NULL_IF_CONFIG_SMALL("Sony Playstation STR"), |
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| 314 | .priv_data_size = sizeof(StrDemuxContext), |
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| 315 | .read_probe = str_probe, |
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| 316 | .read_header = str_read_header, |
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| 317 | .read_packet = str_read_packet, |
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| 318 | .read_close = str_read_close, |
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| 319 | .flags = AVFMT_NO_BYTE_SEEK, |
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| 320 | }; |