/*
* NSV demuxer
- * Copyright (c) 2004 The Libav Project
+ * Copyright (c) 2004 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
*/
#include "internal.h"
#include "riff.h"
#include "libavutil/dict.h"
+#include "libavutil/intreadwrite.h"
//#define DEBUG_DUMP_INDEX // XXX dumbdriving-271.nsv breaks with it commented!!
#define CHECK_SUBSEQUENT_NSVS
* so the header seems to not be mandatory. (for streaming).
*
* index slice duration check (excepts nsvtrailer.nsv):
- * for f in [^n]*.nsv; do
- * DUR="$(avconv -i "$f" 2> /dev/null | grep 'NSVf duration' | cut -d ' ' -f 4)"
- * IC="$(avconv -i "$f" 2> /dev/null | grep 'INDEX ENTRIES' | cut -d ' ' -f 2)"
- * echo "duration $DUR, slite time $(($DUR/$IC))"
- * done
+ * for f in [^n]*.nsv; do DUR="$(ffmpeg -i "$f" 2>/dev/null | grep 'NSVf duration' | cut -d ' ' -f 4)"; IC="$(ffmpeg -i "$f" 2>/dev/null | grep 'INDEX ENTRIES' | cut -d ' ' -f 2)"; echo "duration $DUR, slite time $(($DUR/$IC))"; done
*/
/*
{ CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
{ CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
{ CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
+ { CODEC_ID_VP8, MKTAG('V', 'P', '8', '0') },
/*
{ CODEC_ID_VP4, MKTAG('V', 'P', '4', ' ') },
{ CODEC_ID_VP4, MKTAG('V', 'P', '4', '0') },
{ CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
{ CODEC_ID_AAC, MKTAG('A', 'A', 'C', ' ') },
{ CODEC_ID_AAC, MKTAG('A', 'A', 'C', 'P') },
+ { CODEC_ID_AAC, MKTAG('V', 'L', 'B', ' ') },
{ CODEC_ID_SPEEX, MKTAG('S', 'P', 'X', ' ') },
{ CODEC_ID_PCM_U16LE, MKTAG('P', 'C', 'M', ' ') },
{ CODEC_ID_NONE, 0 },
//nsv->state = NSV_UNSYNC;
for (i = 0; i < NSV_MAX_RESYNC; i++) {
- if (pb->eof_reached) {
+ if (url_feof(pb)) {
av_dlog(s, "NSV EOF\n");
nsv->state = NSV_UNSYNC;
return -1;
table_entries_used = avio_rl32(pb);
av_dlog(s, "NSV NSVf info-strings size: %d, table entries: %d, bis %d\n",
strings_size, table_entries, table_entries_used);
- if (pb->eof_reached)
+ if (url_feof(pb))
return -1;
av_dlog(s, "NSV got header; filepos %"PRId64"\n", avio_tell(pb));
char quote;
p = strings = av_mallocz(strings_size + 1);
+ if (!p)
+ return AVERROR(ENOMEM);
endp = strings + strings_size;
avio_read(pb, strings, strings_size);
while (p < endp) {
}
av_free(strings);
}
- if (pb->eof_reached)
+ if (url_feof(pb))
return -1;
av_dlog(s, "NSV got infos; filepos %"PRId64"\n", avio_tell(pb));
avio_seek(pb, nsv->base_offset + size, SEEK_SET); /* required for dumbdriving-271.nsv (2 extra bytes) */
- if (pb->eof_reached)
+ if (url_feof(pb))
return -1;
nsv->state = NSV_HAS_READ_NSVF;
return 0;
return 0; //-1; /* hey! eat what you've in your plate first! */
null_chunk_retry:
- if (pb->eof_reached)
+ if (url_feof(pb))
return -1;
for (i = 0; i < NSV_MAX_RESYNC_TRIES && nsv->state < NSV_FOUND_NSVS && !err; i++)
vsize -= auxsize + sizeof(uint16_t) + sizeof(uint32_t); /* that's becoming braindead */
}
- if (pb->eof_reached)
+ if (url_feof(pb))
return -1;
if (!vsize && !asize) {
nsv->state = NSV_UNSYNC;
}
/* map back streams to v,a */
- if (s->streams[0])
+ if (s->nb_streams > 0)
st[s->streams[0]->id] = s->streams[0];
- if (s->streams[1])
+ if (s->nb_streams > 1)
st[s->streams[1]->id] = s->streams[1];
- if (vsize/* && st[NSV_ST_VIDEO]*/) {
+ if (vsize && st[NSV_ST_VIDEO]) {
nst = st[NSV_ST_VIDEO]->priv_data;
pkt = &nsv->ahead[NSV_ST_VIDEO];
av_get_packet(pb, pkt, vsize);
if(st[NSV_ST_VIDEO])
((NSVStream*)st[NSV_ST_VIDEO]->priv_data)->frame_offset++;
- if (asize/*st[NSV_ST_AUDIO]*/) {
+ if (asize && st[NSV_ST_AUDIO]) {
nst = st[NSV_ST_AUDIO]->priv_data;
pkt = &nsv->ahead[NSV_ST_AUDIO];
/* read raw audio specific header on the first audio chunk... */
if(index < 0)
return -1;
- avio_seek(s->pb, st->index_entries[index].pos, SEEK_SET);
+ if (avio_seek(s->pb, st->index_entries[index].pos, SEEK_SET) < 0)
+ return -1;
+
nst->frame_offset = st->index_entries[index].timestamp;
nsv->state = NSV_UNSYNC;
return 0;
static int nsv_probe(AVProbeData *p)
{
- int i;
- int score;
- int vsize, asize, auxcount;
- score = 0;
+ int i, score = 0;
+
av_dlog(NULL, "nsv_probe(), buf_size %d\n", p->buf_size);
/* check file header */
/* streamed files might not have any header */
/* seems the servers don't bother starting clean chunks... */
/* sometimes even the first header is at 9KB or something :^) */
for (i = 1; i < p->buf_size - 3; i++) {
- if (p->buf[i+0] == 'N' && p->buf[i+1] == 'S' &&
- p->buf[i+2] == 'V' && p->buf[i+3] == 's') {
- score = AVPROBE_SCORE_MAX/5;
+ if (AV_RL32(p->buf + i) == AV_RL32("NSVs")) {
/* Get the chunk size and check if at the end we are getting 0xBEEF */
- auxcount = p->buf[i+19];
- vsize = p->buf[i+20] | p->buf[i+21] << 8;
- asize = p->buf[i+22] | p->buf[i+23] << 8;
- vsize = (vsize << 4) | (auxcount >> 4);
- if ((asize + vsize + i + 23) < p->buf_size - 2) {
- if (p->buf[i+23+asize+vsize+1] == 0xEF &&
- p->buf[i+23+asize+vsize+2] == 0xBE)
- return AVPROBE_SCORE_MAX-20;
- }
+ int vsize = AV_RL24(p->buf+i+19) >> 4;
+ int asize = AV_RL16(p->buf+i+22);
+ int offset = i + 23 + asize + vsize + 1;
+ if (offset <= p->buf_size - 2 && AV_RL16(p->buf + offset) == 0xBEEF)
+ return 4*AVPROBE_SCORE_MAX/5;
+ score = AVPROBE_SCORE_MAX/5;
}
}
/* so we'll have more luck on extension... */
projects / ffmpeg / blobdiff