/*
- * NSV decoder.
+ * NSV demuxer
* Copyright (c) 2004 The FFmpeg Project.
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library 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 this library; 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 "avformat.h"
#include "riff.h"
-#define DEBUG
+//#define DEBUG
//#define DEBUG_DUMP_INDEX // XXX dumbdriving-271.nsv breaks with it commented!!
//#define DEBUG_SEEK
#define CHECK_SUBSEQUENT_NSVS
* seems someone came to the same conclusions as me, and updated it:
* (2) http://www.stud.ktu.lt/~vitslav/nsv/nsv-format.txt
* http://www.stud.ktu.lt/~vitslav/nsv/
+ * official docs
+ * (3) http://ultravox.aol.com/NSVFormat.rtf
* Sample files:
* (S1) http://www.nullsoft.com/nsv/samples/
* http://www.nullsoft.com/nsv/samples/faster.nsv
struct NSVf_header {
uint32_t chunk_tag; /* 'NSVf' */
uint32_t chunk_size;
- uint32_t file_size; /* max 4GB ??? noone learns anything it seems :^) */
+ uint32_t file_size; /* max 4GB ??? no one learns anything it seems :^) */
uint32_t file_length; //unknown1; /* what about MSB of file_size ? */
uint32_t info_strings_size; /* size of the info strings */ //unknown2;
uint32_t table_entries;
int64_t duration;
uint32_t vtag, atag;
uint16_t vwidth, vheight;
+ int16_t avsync;
//DVDemuxContext* dv_demux;
} NSVContext;
-static const CodecTag nsv_codec_video_tags[] = {
+static const AVCodecTag nsv_codec_video_tags[] = {
{ CODEC_ID_VP3, MKTAG('V', 'P', '3', ' ') },
{ CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
{ CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
{ CODEC_ID_VP5, MKTAG('V', 'P', '5', ' ') },
{ CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
+ { CODEC_ID_VP6, MKTAG('V', 'P', '6', ' ') },
+ { 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_VP4, MKTAG('V', 'P', '4', ' ') },
{ CODEC_ID_VP4, MKTAG('V', 'P', '4', '0') },
- { CODEC_ID_VP6, MKTAG('V', 'P', '6', ' ') },
- { CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
- { CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
*/
- { CODEC_ID_XVID, MKTAG('X', 'V', 'I', 'D') }, /* cf sample xvid decoder from nsv_codec_sdk.zip */
+ { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') }, /* cf sample xvid decoder from nsv_codec_sdk.zip */
{ CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', '3') },
{ 0, 0 },
};
-static const CodecTag nsv_codec_audio_tags[] = {
+static const AVCodecTag nsv_codec_audio_tags[] = {
{ CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
{ CODEC_ID_AAC, MKTAG('A', 'A', 'C', ' ') },
{ CODEC_ID_AAC, MKTAG('A', 'A', 'C', 'P') }, /* _CUTTED__MUXED_2 Heads - Out Of The City.nsv */
{ 0, 0 },
};
-static const AVRational nsv_framerate_table[] = {
- {30,1},
- {30000,1001},
- {25,1},
- {24000,1001},
- {30,1},
- {15000,1001},
-};
-
//static int nsv_load_index(AVFormatContext *s);
static int nsv_read_chunk(AVFormatContext *s, int fill_header);
uint16_t vwidth, vheight;
AVRational framerate;
int i;
- uint16_t unknown;
AVStream *st;
NSVStream *nst;
PRINT(("%s()\n", __FUNCTION__));
vwidth = get_le16(pb);
vheight = get_le16(pb);
i = get_byte(pb);
- /* XXX how big must the table be ? */
- /* seems there is more to that... */
+
PRINT(("NSV NSVs framerate code %2x\n", i));
- if(i&0x80) framerate= nsv_framerate_table[i & 0x7F];
- else framerate= (AVRational){i, 1};
- unknown = get_le16(pb);
+ if(i&0x80) { /* odd way of giving native framerates from docs */
+ int t=(i & 0x7F)>>2;
+ if(t<16) framerate = (AVRational){1, t+1};
+ else framerate = (AVRational){t-15, 1};
+
+ if(i&1){
+ framerate.num *= 1000;
+ framerate.den *= 1001;
+ }
+
+ if((i&3)==3) framerate.num *= 24;
+ else if((i&3)==2) framerate.num *= 25;
+ else framerate.num *= 30;
+ }
+ else
+ framerate= (AVRational){i, 1};
+
+ nsv->avsync = get_le16(pb);
#ifdef DEBUG
print_tag("NSV NSVs vtag", vtag, 0);
print_tag("NSV NSVs atag", atag, 0);
st->codec->codec_type = CODEC_TYPE_AUDIO;
st->codec->codec_tag = atag;
st->codec->codec_id = codec_get_id(nsv_codec_audio_tags, atag);
- st->start_time = 0;
-// st->duration = nsv->duration; //FIXME
- st->need_parsing = 1; /* for PCM we will read a chunk later and put correct info */
- /* XXX:FIXME */
- //st->codec->channels = 2; //XXX:channels;
- //st->codec->sample_rate = 1000;
- //av_set_pts_info(st, 64, 1, st->codec->sample_rate);
+ 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);
+ st->start_time = 0;
+ st->duration = (int64_t)nsv->duration * framerate.num;
#endif
}
#ifdef CHECK_SUBSEQUENT_NSVS
pkt = &nsv->ahead[NSV_ST_VIDEO];
av_get_packet(pb, pkt, vsize);
pkt->stream_index = st[NSV_ST_VIDEO]->index;//NSV_ST_VIDEO;
- pkt->dts = nst->frame_offset++;
- pkt->flags |= PKT_FLAG_KEY; /* stupid format has no way to tell XXX: try the index */
+ pkt->dts = nst->frame_offset;
+ pkt->flags |= nsv->state == NSV_HAS_READ_NSVS ? PKT_FLAG_KEY : 0; /* keyframe only likely on a sync frame */
/*
for (i = 0; i < MIN(8, vsize); i++)
PRINT(("NSV video: [%d] = %02x\n", i, pkt->data[i]));
*/
}
+ if(st[NSV_ST_VIDEO])
+ ((NSVStream*)st[NSV_ST_VIDEO]->priv_data)->frame_offset++;
+
if (asize/*st[NSV_ST_AUDIO]*/) {
nst = st[NSV_ST_AUDIO]->priv_data;
pkt = &nsv->ahead[NSV_ST_AUDIO];
asize-=4;
PRINT(("NSV RAWAUDIO: bps %d, nchan %d, srate %d\n", bps, channels, samplerate));
if (fill_header) {
- st[NSV_ST_AUDIO]->need_parsing = 0; /* we know everything */
+ st[NSV_ST_AUDIO]->need_parsing = AVSTREAM_PARSE_NONE; /* we know everything */
if (bps != 16) {
PRINT(("NSV AUDIO bit/sample != 16 (%d)!!!\n", bps));
}
channels = 1;
st[NSV_ST_AUDIO]->codec->channels = channels;
st[NSV_ST_AUDIO]->codec->sample_rate = samplerate;
- av_set_pts_info(st[NSV_ST_AUDIO], 64, 1,
- st[NSV_ST_AUDIO]->codec->sample_rate);
PRINT(("NSV RAWAUDIO: bps %d, nchan %d, srate %d\n", bps, channels, samplerate));
}
}
av_get_packet(pb, pkt, asize);
pkt->stream_index = st[NSV_ST_AUDIO]->index;//NSV_ST_AUDIO;
- //pkt->dts = nst->frame_offset;
- //if (nst->sample_size)
- // pkt->dts /= nst->sample_size;
- nst->frame_offset += asize; // XXX: that's valid only for PCM !?
+ pkt->flags |= nsv->state == NSV_HAS_READ_NSVS ? PKT_FLAG_KEY : 0; /* keyframe only likely on a sync frame */
+ if( nsv->state == NSV_HAS_READ_NSVS && st[NSV_ST_VIDEO] ) {
+ /* on a nsvs frame we have new information on a/v sync */
+ pkt->dts = (((NSVStream*)st[NSV_ST_VIDEO]->priv_data)->frame_offset-1);
+ pkt->dts *= (int64_t)1000 * st[NSV_ST_VIDEO]->time_base.num;
+ pkt->dts += (int64_t)nsv->avsync * st[NSV_ST_VIDEO]->time_base.den;
+ PRINT(("NSV AUDIO: sync:%d, dts:%"PRId64, nsv->avsync, pkt->dts));
+ }
+ nst->frame_offset++;
}
- //pkt->flags |= PKT_FLAG_KEY;
nsv->state = NSV_UNSYNC;
return 0;
}
int i;
// PRINT(("nsv_probe(), buf_size %d\n", p->buf_size));
/* check file header */
- if (p->buf_size <= 32)
- return 0;
- if (p->buf[0] == 'N' && p->buf[1] == 'S' &&
- p->buf[2] == 'V' && p->buf[3] == 'f')
- return AVPROBE_SCORE_MAX;
/* streamed files might not have any header */
if (p->buf[0] == 'N' && p->buf[1] == 'S' &&
- p->buf[2] == 'V' && p->buf[3] == 's')
+ p->buf[2] == 'V' && (p->buf[3] == 'f' || p->buf[3] == 's'))
return AVPROBE_SCORE_MAX;
/* XXX: do streamed files always start at chunk boundary ?? */
/* or do we need to search NSVs in the byte stream ? */
}
/* so we'll have more luck on extension... */
if (match_ext(p->filename, "nsv"))
- return AVPROBE_SCORE_MAX-20;
+ return AVPROBE_SCORE_MAX/2;
/* FIXME: add mime-type check */
return 0;
}
projects / ffmpeg / blobdiff