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-rw-r--r--libavformat/psxstr.c64
1 files changed, 49 insertions, 15 deletions
diff --git a/libavformat/psxstr.c b/libavformat/psxstr.c
index ac6104fced..398e44e128 100644
--- a/libavformat/psxstr.c
+++ b/libavformat/psxstr.c
@@ -2,20 +2,20 @@
* Sony Playstation (PSX) STR File Demuxer
* Copyright (c) 2003 The ffmpeg Project
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -68,6 +68,8 @@ static const char sync_header[12] = {0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xf
static int str_probe(AVProbeData *p)
{
uint8_t *sector= p->buf;
+ uint8_t *end= sector + p->buf_size;
+ int aud=0, vid=0;
if (p->buf_size < RAW_CD_SECTOR_SIZE)
return 0;
@@ -79,20 +81,52 @@ static int str_probe(AVProbeData *p)
sector += RIFF_HEADER_SIZE;
}
- /* look for CD sync header (00, 0xFF x 10, 00) */
- if (memcmp(sector,sync_header,sizeof(sync_header)))
- return 0;
+ while (end - sector >= RAW_CD_SECTOR_SIZE) {
+ /* look for CD sync header (00, 0xFF x 10, 00) */
+ if (memcmp(sector,sync_header,sizeof(sync_header)))
+ return 0;
- if(sector[0x11] >= 32)
- return 0;
- if( (sector[0x12] & CDXA_TYPE_MASK) != CDXA_TYPE_VIDEO
- && (sector[0x12] & CDXA_TYPE_MASK) != CDXA_TYPE_AUDIO
- && (sector[0x12] & CDXA_TYPE_MASK) != CDXA_TYPE_DATA)
- return 0;
+ if (sector[0x11] >= 32)
+ return 0;
+
+ switch (sector[0x12] & CDXA_TYPE_MASK) {
+ case CDXA_TYPE_DATA:
+ case CDXA_TYPE_VIDEO: {
+ int current_sector = AV_RL16(&sector[0x1C]);
+ int sector_count = AV_RL16(&sector[0x1E]);
+ int frame_size = AV_RL32(&sector[0x24]);
+
+ if(!( frame_size>=0
+ && current_sector < sector_count
+ && sector_count*VIDEO_DATA_CHUNK_SIZE >=frame_size)){
+ return 0;
+ }
+ /*st->codec->width = AV_RL16(&sector[0x28]);
+ st->codec->height = AV_RL16(&sector[0x2A]);*/
+
+// if (current_sector == sector_count-1) {
+ vid++;
+// }
+
+ }
+ break;
+ case CDXA_TYPE_AUDIO:
+ if(sector[0x13]&0x2A)
+ return 0;
+ aud++;
+ break;
+ default:
+ if(sector[0x12] & CDXA_TYPE_MASK)
+ return 0;
+ }
+ sector += RAW_CD_SECTOR_SIZE;
+ }
/* MPEG files (like those ripped from VCDs) can also look like this;
* only return half certainty */
- return 50;
+ if(vid+aud > 3) return 50;
+ else if(vid+aud) return 1;
+ else return 0;
}
static int str_read_header(AVFormatContext *s,
@@ -240,7 +274,7 @@ static int str_read_packet(AVFormatContext *s,
break;
}
- if (pb->eof_reached)
+ if (url_feof(pb))
return AVERROR(EIO);
}
}