/*
* NSV demuxer
- * Copyright (c) 2004 The FFmpeg Project
+ * Copyright (c) 2004 The Libav Project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/attributes.h"
+#include "libavutil/mathematics.h"
#include "avformat.h"
+#include "internal.h"
#include "riff.h"
+#include "libavutil/dict.h"
-//#define DEBUG
//#define DEBUG_DUMP_INDEX // XXX dumbdriving-271.nsv breaks with it commented!!
-//#define DEBUG_SEEK
#define CHECK_SUBSEQUENT_NSVS
//#define DISABLE_AUDIO
* so the header seems to not be mandatory. (for streaming).
*
* index slice duration check (excepts nsvtrailer.nsv):
- * 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/$IC))"; done
+ * for f in [^n]*.nsv; do
+ * DUR="$(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
*/
/*
uint32_t v = 0;
int i;
- av_dlog(s, "%s(), offset = %"PRId64", state = %d\n", __FUNCTION__, url_ftell(pb), nsv->state);
+ av_dlog(s, "%s(), offset = %"PRId64", state = %d\n", __FUNCTION__, avio_tell(pb), nsv->state);
//nsv->state = NSV_UNSYNC;
for (i = 0; i < NSV_MAX_RESYNC; i++) {
- if (url_feof(pb)) {
+ if (pb->eof_reached) {
av_dlog(s, "NSV EOF\n");
nsv->state = NSV_UNSYNC;
return -1;
return -1;
}
-static int nsv_parse_NSVf_header(AVFormatContext *s, AVFormatParameters *ap)
+static int nsv_parse_NSVf_header(AVFormatContext *s)
{
NSVContext *nsv = s->priv_data;
AVIOContext *pb = s->pb;
- unsigned int file_size, size;
+ unsigned int av_unused file_size;
+ unsigned int size;
int64_t duration;
int strings_size;
int table_entries;
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 (url_feof(pb))
+ if (pb->eof_reached)
return -1;
- av_dlog(s, "NSV got header; filepos %"PRId64"\n", url_ftell(pb));
+ av_dlog(s, "NSV got header; filepos %"PRId64"\n", avio_tell(pb));
if (strings_size > 0) {
char *strings; /* last byte will be '\0' to play safe with str*() */
char *token, *value;
char quote;
- p = strings = av_mallocz(strings_size + 1);
+ p = strings = av_mallocz((size_t)strings_size + 1);
+ if (!p)
+ return AVERROR(ENOMEM);
endp = strings + strings_size;
avio_read(pb, strings, strings_size);
while (p < endp) {
break;
*p++ = '\0';
av_dlog(s, "NSV NSVf INFO: %s='%s'\n", token, value);
- av_metadata_set2(&s->metadata, token, value, 0);
+ av_dict_set(&s->metadata, token, value, 0);
}
av_free(strings);
}
- if (url_feof(pb))
+ if (pb->eof_reached)
return -1;
- av_dlog(s, "NSV got infos; filepos %"PRId64"\n", url_ftell(pb));
+ av_dlog(s, "NSV got infos; filepos %"PRId64"\n", avio_tell(pb));
if (table_entries_used > 0) {
int i;
if((unsigned)table_entries_used >= UINT_MAX / sizeof(uint32_t))
return -1;
nsv->nsvs_file_offset = av_malloc((unsigned)table_entries_used * sizeof(uint32_t));
+ if (!nsv->nsvs_file_offset)
+ return AVERROR(ENOMEM);
for(i=0;i<table_entries_used;i++)
nsv->nsvs_file_offset[i] = avio_rl32(pb) + size;
if(table_entries > table_entries_used &&
avio_rl32(pb) == MKTAG('T','O','C','2')) {
nsv->nsvs_timestamps = av_malloc((unsigned)table_entries_used*sizeof(uint32_t));
+ if (!nsv->nsvs_timestamps)
+ return AVERROR(ENOMEM);
for(i=0;i<table_entries_used;i++) {
nsv->nsvs_timestamps[i] = avio_rl32(pb);
}
}
}
- av_dlog(s, "NSV got index; filepos %"PRId64"\n", url_ftell(pb));
+ av_dlog(s, "NSV got index; filepos %"PRId64"\n", avio_tell(pb));
#ifdef DEBUG_DUMP_INDEX
#define V(v) ((v<0x20 || v > 127)?'.':v)
avio_seek(pb, nsv->base_offset + size, SEEK_SET); /* required for dumbdriving-271.nsv (2 extra bytes) */
- if (url_feof(pb))
+ if (pb->eof_reached)
return -1;
nsv->state = NSV_HAS_READ_NSVF;
return 0;
}
-static int nsv_parse_NSVs_header(AVFormatContext *s, AVFormatParameters *ap)
+static int nsv_parse_NSVs_header(AVFormatContext *s)
{
NSVContext *nsv = s->priv_data;
AVIOContext *pb = s->pb;
nsv->vheight = vwidth;
if (vtag != T_NONE) {
int i;
- st = av_new_stream(s, NSV_ST_VIDEO);
+ st = avformat_new_stream(s, NULL);
if (!st)
goto fail;
+ st->id = NSV_ST_VIDEO;
nst = av_mallocz(sizeof(NSVStream));
if (!nst)
goto fail;
st->codec->height = vheight;
st->codec->bits_per_coded_sample = 24; /* depth XXX */
- av_set_pts_info(st, 64, framerate.den, framerate.num);
+ avpriv_set_pts_info(st, 64, framerate.den, framerate.num);
st->start_time = 0;
st->duration = av_rescale(nsv->duration, framerate.num, 1000*framerate.den);
}
if (atag != T_NONE) {
#ifndef DISABLE_AUDIO
- st = av_new_stream(s, NSV_ST_AUDIO);
+ st = avformat_new_stream(s, NULL);
if (!st)
goto fail;
+ st->id = NSV_ST_AUDIO;
nst = av_mallocz(sizeof(NSVStream));
if (!nst)
goto fail;
st->need_parsing = AVSTREAM_PARSE_FULL; /* for PCM we will read a chunk later and put correct info */
/* set timebase to common denominator of ms and framerate */
- av_set_pts_info(st, 64, 1, framerate.num*1000);
+ avpriv_set_pts_info(st, 64, 1, framerate.num*1000);
st->start_time = 0;
st->duration = (int64_t)nsv->duration * framerate.num;
#endif
return -1;
}
-static int nsv_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int nsv_read_header(AVFormatContext *s)
{
NSVContext *nsv = s->priv_data;
int i, err;
for (i = 0; i < NSV_MAX_RESYNC_TRIES; i++) {
if (nsv_resync(s) < 0)
return -1;
- if (nsv->state == NSV_FOUND_NSVF)
- err = nsv_parse_NSVf_header(s, ap);
+ if (nsv->state == NSV_FOUND_NSVF) {
+ err = nsv_parse_NSVf_header(s);
+ if (err < 0)
+ return err;
+ }
/* we need the first NSVs also... */
if (nsv->state == NSV_FOUND_NSVS) {
- err = nsv_parse_NSVs_header(s, ap);
+ err = nsv_parse_NSVs_header(s);
+ if (err < 0)
+ return err;
break; /* we just want the first one */
}
}
err = nsv_read_chunk(s, 1);
av_dlog(s, "parsed header\n");
- return 0;
+ return err;
}
static int nsv_read_chunk(AVFormatContext *s, int fill_header)
uint32_t vsize;
uint16_t asize;
uint16_t auxsize;
- uint32_t auxtag;
av_dlog(s, "%s(%d)\n", __FUNCTION__, fill_header);
return 0; //-1; /* hey! eat what you've in your plate first! */
null_chunk_retry:
- if (url_feof(pb))
+ if (pb->eof_reached)
return -1;
for (i = 0; i < NSV_MAX_RESYNC_TRIES && nsv->state < NSV_FOUND_NSVS && !err; i++)
if (err < 0)
return err;
if (nsv->state == NSV_FOUND_NSVS)
- err = nsv_parse_NSVs_header(s, NULL);
+ err = nsv_parse_NSVs_header(s);
if (err < 0)
return err;
if (nsv->state != NSV_HAS_READ_NSVS && nsv->state != NSV_FOUND_BEEF)
av_dlog(s, "NSV CHUNK %d aux, %u bytes video, %d bytes audio\n", auxcount, vsize, asize);
/* skip aux stuff */
for (i = 0; i < auxcount; i++) {
+ uint32_t av_unused auxtag;
auxsize = avio_rl16(pb);
auxtag = avio_rl32(pb);
av_dlog(s, "NSV aux data: '%c%c%c%c', %d bytes\n",
((auxtag >> 16) & 0x0ff),
((auxtag >> 24) & 0x0ff),
auxsize);
- avio_seek(pb, auxsize, SEEK_CUR);
+ avio_skip(pb, auxsize);
vsize -= auxsize + sizeof(uint16_t) + sizeof(uint32_t); /* that's becoming braindead */
}
- if (url_feof(pb))
+ if (pb->eof_reached)
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;
av_dlog(NULL, "nsv_probe(), buf_size %d\n", p->buf_size);
/* check file header */
/* streamed files might not have any header */
/* 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')
- return AVPROBE_SCORE_MAX-20;
+ p->buf[i+2] == 'V' && p->buf[i+3] == 's') {
+ score = AVPROBE_SCORE_MAX/5;
+ /* 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;
+ }
+ }
}
/* so we'll have more luck on extension... */
if (av_match_ext(p->filename, "nsv"))
return AVPROBE_SCORE_MAX/2;
/* FIXME: add mime-type check */
- return 0;
+ return score;
}
AVInputFormat ff_nsv_demuxer = {
- "nsv",
- NULL_IF_CONFIG_SMALL("Nullsoft Streaming Video"),
- sizeof(NSVContext),
- nsv_probe,
- nsv_read_header,
- nsv_read_packet,
- nsv_read_close,
- nsv_read_seek,
+ .name = "nsv",
+ .long_name = NULL_IF_CONFIG_SMALL("Nullsoft Streaming Video"),
+ .priv_data_size = sizeof(NSVContext),
+ .read_probe = nsv_probe,
+ .read_header = nsv_read_header,
+ .read_packet = nsv_read_packet,
+ .read_close = nsv_read_close,
+ .read_seek = nsv_read_seek,
};
projects / ffmpeg / blobdiff