2004-04-12 14:19:12 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Nullsoft Streaming Video demuxer
|
|
|
|
* for MPlayer
|
|
|
|
* by Reza Jelveh <reza.jelveh@tuhh.de>
|
|
|
|
* seeking and PCM audio not yet supported
|
|
|
|
* PCM needs extra audio chunk "miniheader" parsing
|
2004-04-12 23:58:06 +00:00
|
|
|
* Based on A'rpis G2 work
|
|
|
|
* Licence: GPL
|
2004-04-12 14:19:12 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
|
|
|
|
#include "config.h"
|
|
|
|
#include "mp_msg.h"
|
|
|
|
#include "help_mp.h"
|
2007-03-15 18:36:36 +00:00
|
|
|
#include "stream/stream.h"
|
2004-04-12 14:19:12 +00:00
|
|
|
#include "demuxer.h"
|
|
|
|
#include "stheader.h"
|
|
|
|
|
|
|
|
typedef struct {
|
|
|
|
float v_pts;
|
|
|
|
int video_pack_no;
|
|
|
|
unsigned int a_format;
|
|
|
|
unsigned int v_format;
|
|
|
|
unsigned char fps;
|
|
|
|
} nsv_priv_t;
|
|
|
|
|
2006-04-24 15:12:06 +00:00
|
|
|
#define HEADER_SEARCH_SIZE 256000
|
2005-08-30 19:06:55 +00:00
|
|
|
|
|
|
|
|
2004-04-12 14:19:12 +00:00
|
|
|
/**
|
|
|
|
* Seeking still to be implemented
|
|
|
|
*/
|
2006-02-17 01:57:41 +00:00
|
|
|
static void demux_seek_nsv ( demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags )
|
2004-04-12 14:19:12 +00:00
|
|
|
{
|
|
|
|
// seeking is not yet implemented
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2005-08-05 19:57:47 +00:00
|
|
|
static int demux_nsv_fill_buffer ( demuxer_t *demuxer, demux_stream_t *ds )
|
2004-04-12 14:19:12 +00:00
|
|
|
{
|
|
|
|
unsigned char hdr[17];
|
|
|
|
// for the extra data
|
|
|
|
unsigned char aux[6];
|
|
|
|
int i_aux = 0;
|
|
|
|
// videolen = audio chunk length, audiolen = video chunk length
|
|
|
|
int videolen,audiolen;
|
|
|
|
|
2004-04-25 01:51:53 +00:00
|
|
|
sh_video_t *sh_video = demuxer->video->sh;
|
|
|
|
sh_audio_t *sh_audio = demuxer->audio->sh;
|
2004-04-12 14:19:12 +00:00
|
|
|
|
|
|
|
nsv_priv_t * priv = demuxer->priv;
|
|
|
|
|
|
|
|
// if the audio/video chunk has no new header the first 2 bytes will be discarded 0xBEEF
|
|
|
|
// or rather 0xEF 0xBE
|
|
|
|
stream_read(demuxer->stream,hdr,7);
|
|
|
|
if(stream_eof(demuxer->stream)) return 0;
|
|
|
|
// sometimes instead of 0xBEEF as described for the next audio/video chunk we get
|
|
|
|
// a whole new header
|
|
|
|
|
|
|
|
mp_dbg(MSGT_DEMUX,MSGL_DBG2,"demux_nsv: %08X %08X\n",hdr[0]<<8|hdr[1],stream_tell(demuxer->stream));
|
|
|
|
switch(hdr[0]<<8|hdr[1]) {
|
|
|
|
case 0x4E53:
|
|
|
|
if(hdr[2]==0x56 && hdr[3]==0x73){
|
|
|
|
// NSVs
|
|
|
|
// get the header since there is no more metaheader after the first one
|
|
|
|
// there is no more need to skip that
|
|
|
|
stream_read(demuxer->stream,hdr+7,17-7);
|
|
|
|
stream_read(demuxer->stream,hdr,7);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0xEFBE:
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
2004-04-25 01:51:53 +00:00
|
|
|
mp_dbg(MSGT_DEMUX,MSGL_WARN,"demux_nsv: sync lost\n");
|
2004-04-12 14:19:12 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2004-04-25 01:51:53 +00:00
|
|
|
if (sh_video)
|
2004-04-12 14:19:12 +00:00
|
|
|
sh_video->pts = priv->v_pts =demuxer->video->pts= priv->video_pack_no *
|
|
|
|
(float)sh_video->frametime;
|
2004-04-25 01:51:53 +00:00
|
|
|
else
|
|
|
|
priv->v_pts = priv->video_pack_no;
|
2004-04-12 14:19:12 +00:00
|
|
|
|
|
|
|
demuxer->filepos=stream_tell(demuxer->stream);
|
|
|
|
|
|
|
|
|
|
|
|
mp_dbg(MSGT_DEMUX,MSGL_DBG2,"demux_nsv: %08X: %02X %02X | %02X %02X %02X | %02X %02X \n",
|
|
|
|
(int)demuxer->filepos, hdr[0],hdr[1],hdr[2],hdr[3],hdr[4],hdr[5],hdr[6]);
|
|
|
|
|
|
|
|
// read video:
|
|
|
|
videolen=(hdr[2]>>4)|(hdr[3]<<4)|(hdr[4]<<0xC);
|
|
|
|
//check if we got extra data like subtitles here
|
|
|
|
if( (hdr[2]&0x0f) != 0x0 ) {
|
|
|
|
stream_read( demuxer->stream, aux, 6);
|
|
|
|
|
|
|
|
i_aux = aux[0]|aux[1]<<8;
|
|
|
|
// We skip this extra data
|
|
|
|
stream_skip( demuxer->stream, i_aux );
|
|
|
|
i_aux+=6;
|
|
|
|
videolen -= i_aux;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// we need to return an empty packet when the
|
|
|
|
// video frame is empty otherwise the stream will fasten up
|
2004-04-25 01:51:53 +00:00
|
|
|
if(sh_video) {
|
2004-04-12 14:19:12 +00:00
|
|
|
if( (hdr[2]&0x0f) != 0x0 )
|
|
|
|
ds_read_packet(demuxer->video,demuxer->stream,videolen,priv->v_pts,demuxer->filepos-i_aux,0);
|
|
|
|
else
|
|
|
|
ds_read_packet(demuxer->video,demuxer->stream,videolen,priv->v_pts,demuxer->filepos,0);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
stream_skip(demuxer->stream,videolen);
|
|
|
|
|
|
|
|
// read audio:
|
|
|
|
audiolen=(hdr[5])|(hdr[6]<<8);
|
|
|
|
// we need to return an empty packet when the
|
|
|
|
// audio frame is empty otherwise the stream will fasten up
|
2004-04-25 01:51:53 +00:00
|
|
|
if(sh_audio) {
|
2004-04-12 14:19:12 +00:00
|
|
|
ds_read_packet(demuxer->audio,demuxer->stream,audiolen,priv->v_pts,demuxer->filepos+videolen,0);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
stream_skip(demuxer->stream,audiolen);
|
|
|
|
|
|
|
|
++priv->video_pack_no;
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2005-08-05 19:57:47 +00:00
|
|
|
static demuxer_t* demux_open_nsv ( demuxer_t* demuxer )
|
2004-04-12 14:19:12 +00:00
|
|
|
{
|
|
|
|
// last 2 bytes 17 and 18 are unknown but right after that comes the length
|
|
|
|
unsigned char hdr[17];
|
|
|
|
int videolen,audiolen;
|
2004-04-25 01:51:53 +00:00
|
|
|
unsigned char buf[10];
|
2004-04-12 14:19:12 +00:00
|
|
|
sh_video_t *sh_video = NULL;
|
|
|
|
sh_audio_t *sh_audio = NULL;
|
|
|
|
|
|
|
|
|
|
|
|
nsv_priv_t * priv = malloc(sizeof(nsv_priv_t));
|
|
|
|
demuxer->priv=priv;
|
|
|
|
priv->video_pack_no=0;
|
2004-04-13 19:56:48 +00:00
|
|
|
|
2004-04-12 14:19:12 +00:00
|
|
|
/* disable seeking yet to be fixed*/
|
|
|
|
demuxer->seekable = 0;
|
|
|
|
|
|
|
|
stream_read(demuxer->stream,hdr,4);
|
|
|
|
if(stream_eof(demuxer->stream)) return 0;
|
|
|
|
|
|
|
|
if(hdr[0]==0x4E && hdr[1]==0x53 && hdr[2]==0x56){
|
|
|
|
// NSV header!
|
|
|
|
if(hdr[3]==0x73){
|
|
|
|
// NSVs
|
|
|
|
stream_read(demuxer->stream,hdr+4,17-4);
|
|
|
|
}
|
|
|
|
|
|
|
|
if(hdr[3]==0x66){
|
|
|
|
// NSVf
|
|
|
|
int len=stream_read_dword_le(demuxer->stream);
|
|
|
|
// TODO: parse out metadata!!!!
|
|
|
|
stream_skip(demuxer->stream,len-8);
|
|
|
|
|
|
|
|
// NSVs
|
|
|
|
stream_read(demuxer->stream,hdr,17);
|
2006-10-28 10:44:45 +00:00
|
|
|
if (stream_eof(demuxer->stream) || strncmp(hdr, "NSVs", 4))
|
|
|
|
return 0;
|
2004-04-12 14:19:12 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// dummy debug message
|
|
|
|
mp_msg(MSGT_DEMUX,MSGL_V,"demux_nsv: Header: %.12s\n",hdr);
|
|
|
|
|
|
|
|
// bytes 8-11 audio codec fourcc
|
|
|
|
// PCM fourcc needs extra parsing for every audio chunk, yet to implement
|
2004-07-25 15:38:08 +00:00
|
|
|
if((demuxer->audio->id != -2) && strncmp(hdr+8,"NONE", 4)){//&&strncmp(hdr+8,"VLB ", 4)){
|
2004-04-12 14:19:12 +00:00
|
|
|
sh_audio = new_sh_audio ( demuxer, 0 );
|
|
|
|
demuxer->audio->sh = sh_audio;
|
|
|
|
sh_audio->format=mmioFOURCC(hdr[8],hdr[9],hdr[10],hdr[11]);
|
|
|
|
sh_audio->ds = demuxer->audio;
|
2004-07-25 15:38:08 +00:00
|
|
|
priv->a_format=mmioFOURCC(hdr[8],hdr[9],hdr[10],hdr[11]);
|
2004-04-12 14:19:12 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// store hdr fps
|
|
|
|
priv->fps=hdr[16];
|
|
|
|
|
2004-07-25 15:38:08 +00:00
|
|
|
if ((demuxer->video->id != -2) && strncmp(hdr+4,"NONE", 4)) {
|
2004-04-13 19:56:48 +00:00
|
|
|
/* Create a new video stream header */
|
|
|
|
sh_video = new_sh_video ( demuxer, 0 );
|
|
|
|
|
|
|
|
/* Make sure the demuxer knows about the new video stream header
|
|
|
|
* (even though new_sh_video() ought to take care of it)
|
|
|
|
*/
|
|
|
|
demuxer->video->sh = sh_video;
|
|
|
|
|
|
|
|
/* Make sure that the video demuxer stream header knows about its
|
|
|
|
* parent video demuxer stream (this is getting wacky), or else
|
|
|
|
* video_read_properties() will choke
|
|
|
|
*/
|
|
|
|
sh_video->ds = demuxer->video;
|
|
|
|
|
2004-04-12 14:19:12 +00:00
|
|
|
// bytes 4-7 video codec fourcc
|
|
|
|
priv->v_format = sh_video->format=mmioFOURCC(hdr[4],hdr[5],hdr[6],hdr[7]);
|
|
|
|
|
|
|
|
// new video stream! parse header
|
|
|
|
sh_video->disp_w=hdr[12]|(hdr[13]<<8);
|
|
|
|
sh_video->disp_h=hdr[14]|(hdr[15]<<8);
|
2006-07-03 13:21:54 +00:00
|
|
|
sh_video->bih=calloc(1,sizeof(BITMAPINFOHEADER));
|
2004-04-12 14:19:12 +00:00
|
|
|
sh_video->bih->biSize=sizeof(BITMAPINFOHEADER);
|
|
|
|
sh_video->bih->biPlanes=1;
|
|
|
|
sh_video->bih->biBitCount=24;
|
|
|
|
sh_video->bih->biWidth=hdr[12]|(hdr[13]<<8);
|
|
|
|
sh_video->bih->biHeight=hdr[14]|(hdr[15]<<8);
|
|
|
|
memcpy(&sh_video->bih->biCompression,hdr+4,4);
|
|
|
|
sh_video->bih->biSizeImage=sh_video->bih->biWidth*sh_video->bih->biHeight*3;
|
|
|
|
|
|
|
|
// here we search for the correct keyframe
|
2004-04-25 13:40:53 +00:00
|
|
|
// vp6 keyframe is when the 2nd byte of the vp6 header is
|
|
|
|
// 0x36 for VP61 and 0x46 for VP62
|
2004-04-25 01:51:53 +00:00
|
|
|
if((priv->v_format==mmioFOURCC('V','P','6','1')) ||
|
|
|
|
(priv->v_format==mmioFOURCC('V','P','6','2')) ||
|
|
|
|
(priv->v_format==mmioFOURCC('V','P','3','1'))) {
|
|
|
|
stream_read(demuxer->stream,buf,10);
|
2004-04-25 15:42:44 +00:00
|
|
|
if (((((priv->v_format>>16) & 0xff) == '6') && ((buf[8]&0x0e)!=0x06)) ||
|
2004-04-25 01:51:53 +00:00
|
|
|
((((priv->v_format>>16) & 0xff) == '3') && (buf[8]!=0x00 || buf[9]!=0x08))) {
|
|
|
|
mp_msg(MSGT_DEMUX,MSGL_V,"demux_nsv: searching %.4s keyframe...\n", (char*)&priv->v_format);
|
2004-04-25 15:42:44 +00:00
|
|
|
while(((((priv->v_format>>16) & 0xff) == '6') && ((buf[8]&0x0e)!=0x06)) ||
|
2004-04-25 01:51:53 +00:00
|
|
|
((((priv->v_format>>16) & 0xff) == '3') && (buf[8]!=0x00 || buf[9]!=0x08))){
|
|
|
|
mp_msg(MSGT_DEMUX,MSGL_DBG2,"demux_nsv: %.4s block skip.\n", (char*)&priv->v_format);
|
2004-04-12 17:13:15 +00:00
|
|
|
videolen=(buf[2]>>4)|(buf[3]<<4)|(buf[4]<<0xC);
|
|
|
|
audiolen=(buf[5])|(buf[6]<<8);
|
2004-04-25 01:51:53 +00:00
|
|
|
stream_skip(demuxer->stream, videolen+audiolen-3);
|
|
|
|
stream_read(demuxer->stream,buf,10);
|
2004-04-25 15:42:44 +00:00
|
|
|
if(stream_eof(demuxer->stream)) return 0;
|
2004-04-12 17:13:15 +00:00
|
|
|
if(buf[0]==0x4E){
|
|
|
|
mp_msg(MSGT_DEMUX,MSGL_DBG2,"demux_nsv: Got NSVs block.\n");
|
2004-04-25 01:51:53 +00:00
|
|
|
stream_skip(demuxer->stream,7);
|
|
|
|
stream_read(demuxer->stream,buf,10);
|
2004-04-12 14:19:12 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2004-09-09 19:28:54 +00:00
|
|
|
// data starts 10 bytes before current pos but later
|
|
|
|
// we seek 17 backwards
|
|
|
|
stream_skip(demuxer->stream,7);
|
2004-04-12 14:19:12 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
switch(priv->fps){
|
|
|
|
case 0x80:
|
|
|
|
sh_video->fps=30;
|
|
|
|
break;
|
|
|
|
case 0x81:
|
|
|
|
sh_video->fps=(float)30000.0/1001.0;
|
|
|
|
break;
|
|
|
|
case 0x82:
|
|
|
|
sh_video->fps=25;
|
|
|
|
break;
|
|
|
|
case 0x83:
|
|
|
|
sh_video->fps=(float)24000.0/1001.0;
|
|
|
|
break;
|
|
|
|
case 0x85:
|
|
|
|
sh_video->fps=(float)15000.0/1001.0;
|
|
|
|
break;
|
2005-07-17 16:02:49 +00:00
|
|
|
case 0x89:
|
|
|
|
sh_video->fps=(float)10000.0/1001.0;
|
|
|
|
break;
|
2004-04-12 14:19:12 +00:00
|
|
|
default:
|
|
|
|
sh_video->fps = (float)priv->fps;
|
|
|
|
}
|
|
|
|
sh_video->frametime = (float)1.0 / (float)sh_video->fps;
|
2004-04-13 19:56:48 +00:00
|
|
|
}
|
2004-04-12 14:19:12 +00:00
|
|
|
}
|
|
|
|
|
2004-09-09 19:28:54 +00:00
|
|
|
// seek to start of NSV header
|
|
|
|
stream_seek(demuxer->stream,stream_tell(demuxer->stream)-17);
|
2004-04-12 14:19:12 +00:00
|
|
|
|
|
|
|
return demuxer;
|
|
|
|
}
|
|
|
|
|
2005-08-05 19:57:47 +00:00
|
|
|
static int nsv_check_file ( demuxer_t* demuxer )
|
2004-04-12 14:19:12 +00:00
|
|
|
{
|
2006-10-28 11:01:18 +00:00
|
|
|
uint32_t hdr = 0;
|
2005-08-30 19:06:55 +00:00
|
|
|
int i;
|
2004-04-12 14:19:12 +00:00
|
|
|
|
|
|
|
mp_msg ( MSGT_DEMUX, MSGL_V, "Checking for Nullsoft Streaming Video\n" );
|
|
|
|
|
2005-08-30 19:06:55 +00:00
|
|
|
for (i = 0; i < HEADER_SEARCH_SIZE; i++) {
|
2006-10-28 11:01:18 +00:00
|
|
|
uint8_t c = stream_read_char(demuxer->stream);
|
|
|
|
if (stream_eof(demuxer->stream))
|
2005-08-30 19:06:55 +00:00
|
|
|
return 0;
|
2006-10-28 11:01:18 +00:00
|
|
|
if (hdr == mmioFOURCC('s', 'V', 'S', 'N') ||
|
|
|
|
(hdr == mmioFOURCC('f', 'V', 'S', 'N') && !c)) {
|
|
|
|
stream_seek(demuxer->stream,stream_tell(demuxer->stream)-5);
|
2005-08-30 19:06:55 +00:00
|
|
|
return DEMUXER_TYPE_NSV;
|
|
|
|
}
|
2006-10-28 11:01:18 +00:00
|
|
|
hdr = (hdr << 8) | c;
|
2005-08-30 19:06:55 +00:00
|
|
|
}
|
2004-04-12 14:19:12 +00:00
|
|
|
|
2005-08-30 19:06:55 +00:00
|
|
|
return 0;
|
2004-04-12 14:19:12 +00:00
|
|
|
}
|
|
|
|
|
2005-08-05 19:57:47 +00:00
|
|
|
static void demux_close_nsv(demuxer_t* demuxer) {
|
2004-04-12 14:19:12 +00:00
|
|
|
nsv_priv_t* priv = demuxer->priv;
|
|
|
|
|
|
|
|
if(!priv)
|
|
|
|
return;
|
|
|
|
free(priv);
|
|
|
|
|
|
|
|
}
|
2005-08-05 19:57:47 +00:00
|
|
|
|
|
|
|
|
2008-01-13 16:00:39 +00:00
|
|
|
const demuxer_desc_t demuxer_desc_nsv = {
|
2005-08-05 19:57:47 +00:00
|
|
|
"NullsoftVideo demuxer",
|
|
|
|
"nsv",
|
|
|
|
"Nullsoft Streaming Video",
|
|
|
|
"Reza Jelveh",
|
|
|
|
"nsv and nsa streaming files",
|
|
|
|
DEMUXER_TYPE_NSV,
|
2005-08-30 19:06:55 +00:00
|
|
|
0, // safe but expensive autodetect
|
2005-08-05 19:57:47 +00:00
|
|
|
nsv_check_file,
|
|
|
|
demux_nsv_fill_buffer,
|
|
|
|
demux_open_nsv,
|
|
|
|
demux_close_nsv,
|
|
|
|
demux_seek_nsv,
|
|
|
|
NULL
|
|
|
|
};
|