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Commit 20275a0b authored by Laurent Aimar's avatar Laurent Aimar
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* nsv: clean up, added seek support.

parent bcf186fd
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Showing with 223 additions and 121 deletions
modules/demux/nsv.c
View file @ 20275a0b
......@@ -2,7 +2,7 @@
* nsv.c: NullSoft Video demuxer.
*****************************************************************************
* Copyright (C) 2004 VideoLAN
* $Id: nsv.c,v 1.1 2004/01/04 14:28:11 fenrir Exp $
* $Id: nsv.c,v 1.2 2004/01/05 03:19:00 fenrir Exp $
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
......@@ -29,6 +29,12 @@
#include <vlc/vlc.h>
#include <vlc/input.h>
/* TODO:
* - implement NSVf parsing (to get meta data)
* - implement missing Control (and in the right way)
* - ...
*/
/*****************************************************************************
* Module descriptor
*****************************************************************************/
......@@ -37,7 +43,7 @@ static void Close ( vlc_object_t * );
vlc_module_begin();
set_description( _("NullSoft demuxer" ) );
set_capability( "demux2", 1 );
set_capability( "demux2", 10 );
set_callbacks( Open, Close );
add_shortcut( "nsv" );
vlc_module_end();
......@@ -55,12 +61,18 @@ struct demux_sys_t
es_out_id_t *p_video;
int64_t i_pcr;
int64_t i_time;
int64_t i_pcr_inc;
};
static int Demux ( demux_t *p_demux );
static int Control( demux_t *p_demux, int i_query, va_list args );
static int ReSynch( demux_t *p_demux );
static int ReadNSVf( demux_t *p_demux );
static int ReadNSVs( demux_t *p_demux );
/*****************************************************************************
* Open
*****************************************************************************/
......@@ -78,15 +90,20 @@ static int Open( vlc_object_t *p_this )
return VLC_EGENERIC;
}
if( strncmp( p_peek, "NSVf", 4 ) && strncmp( p_peek, "NSVs", 4 ))
{
/* In case we had force this demuxer we try to resynch */
if( strcmp( p_demux->psz_demux, "nsv" ) || ReSynch( p_demux ) )
{
msg_Warn( p_demux, "NSV module discarded" );
return VLC_EGENERIC;
}
}
/* Fill p_demux field */
p_demux->pf_demux = Demux;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
es_format_Init( &p_sys->fmt_audio, AUDIO_ES, 0 );
p_sys->p_audio = NULL;
......@@ -94,18 +111,9 @@ static int Open( vlc_object_t *p_this )
p_sys->p_video = NULL;
p_sys->i_pcr = 1;
p_sys->i_time = 0;
p_sys->i_pcr_inc = 0;
/* Parse the headers */
if( !strncmp( p_peek, "NSVf", 4 ) )
{
int i_size = GetDWLE( &p_peek[4] );
/* For now skip it */
stream_Read( p_demux->s, NULL, i_size );
}
return VLC_SUCCESS;
}
......@@ -128,130 +136,54 @@ static int Demux( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
uint8_t header[19];
uint8_t header[5];
uint8_t *p_peek;
int i_size;
block_t *p_frame;
if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 )
for( ;; )
{
if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 )
{
msg_Warn( p_demux, "cannot peek" );
return 0;
}
if( GetWLE( p_peek ) == 0xbeef )
if( !strncmp( p_peek, "NSVf", 4 ) )
{
if( stream_Read( p_demux->s, NULL, 2 ) < 2 )
if( ReadNSVf( p_demux ) )
{
msg_Warn( p_demux, "cannot read" );
return 0;
return -1;
}
}
else if( !strncmp( p_peek, "NSVs", 4 ) )
{
vlc_fourcc_t fcc;
if( stream_Read( p_demux->s, header, 19 ) < 19 )
if( ReadNSVs( p_demux ) )
{
msg_Warn( p_demux, "cannot read" );
return 0;
return -1;
}
msg_Dbg( p_demux, "New NSVs chunk" );
/* Video */
switch( ( fcc = VLC_FOURCC( header[4], header[5], header[6], header[7] ) ) )
{
case VLC_FOURCC( 'V', 'P', '3', ' ' ):
case VLC_FOURCC( 'V', 'P', '3', '1' ):
fcc = VLC_FOURCC( 'V', 'P', '3', '1' );
break;
case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
break;
default:
msg_Warn( p_demux, "unknow codec" );
break;
}
if( fcc != VLC_FOURCC( 'N', 'O', 'N', 'E' ) && fcc != p_sys->fmt_video.i_codec )
{
es_format_Init( &p_sys->fmt_video, VIDEO_ES, fcc );
p_sys->fmt_video.video.i_width = GetWLE( &header[12] );
p_sys->fmt_video.video.i_height = GetWLE( &header[14] );
if( p_sys->p_video )
{
es_out_Del( p_demux->out, p_sys->p_video );
}
p_sys->p_video = es_out_Add( p_demux->out, &p_sys->fmt_video );
msg_Dbg( p_demux, " - video `%4.4s' %dx%d",
(char*)&fcc,
p_sys->fmt_video.video.i_width,
p_sys->fmt_video.video.i_height );
}
/* Audio */
switch( ( fcc = VLC_FOURCC( header[8], header[9], header[10], header[11] ) ) )
else if( GetWLE( p_peek ) == 0xbeef )
{
case VLC_FOURCC( 'M', 'P', '3', ' ' ):
fcc = VLC_FOURCC( 'm', 'p', 'g', 'a' );
break;
case VLC_FOURCC( 'P', 'C', 'M', ' ' ):
fcc = VLC_FOURCC( 'a', 'r', 'a', 'w' );
break;
case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
break;
default:
msg_Warn( p_demux, "unknow codec" );
break;
}
if( fcc != VLC_FOURCC( 'N', 'O', 'N', 'E' ) && fcc != p_sys->fmt_audio.i_codec )
{
msg_Dbg( p_demux, " - audio `%4.4s'", (char*)&fcc );
if( p_sys->p_audio )
/* Next frame of the current NSVs chunk */
if( stream_Read( p_demux->s, NULL, 2 ) < 2 )
{
es_out_Del( p_demux->out, p_sys->p_audio );
p_sys->p_audio = NULL;
}
es_format_Init( &p_sys->fmt_audio, AUDIO_ES, fcc );
msg_Warn( p_demux, "cannot read" );
return 0;
}
if( header[16]&0x80 )
{
switch( header[16]&0x7f )
{
case 1: /* 29.97 fps */
p_sys->i_pcr_inc = 33367;
break;
case 3: /* 23.976 fps */
p_sys->i_pcr_inc = 41708;
break;
case 5: /* 14.98 fps */
p_sys->i_pcr_inc = 66755;
break;
default:
msg_Dbg( p_demux, "unknow fps (0x%x)", header[16] );
p_sys->i_pcr_inc = 40000;
break;
}
}
else if( header[16] != 0 )
{
p_sys->i_pcr_inc = 1000000 / header[16];
}
else
{
msg_Dbg( p_demux, "invalid fps (0x00)" );
p_sys->i_pcr_inc = 40000;
}
msg_Dbg( p_demux, " - fps=%.3f", 1000000.0 / (double)p_sys->i_pcr_inc );
}
else
{
msg_Err( p_demux, "invalid signature 0x%x (%4.4s)", *(uint32_t*)p_peek, (char*)p_peek );
if( ReSynch( p_demux ) )
{
return -1;
}
}
}
if( stream_Read( p_demux->s, header, 5 ) < 5 )
{
......@@ -279,7 +211,6 @@ static int Demux( demux_t *p_demux )
if( i_size > 0 )
{
/* msg_Dbg( p_demux, "frame audio size=%d", i_size ); */
if( p_sys->fmt_audio.i_codec == VLC_FOURCC( 'a', 'r', 'a', 'w' ) )
{
uint8_t h[4];
......@@ -304,6 +235,10 @@ static int Demux( demux_t *p_demux )
}
p_sys->i_pcr += p_sys->i_pcr_inc;
if( p_sys->i_time >= 0 )
{
p_sys->i_time += p_sys->i_pcr_inc;
}
return 1;
}
......@@ -331,25 +266,30 @@ static int Control( demux_t *p_demux, int i_query, va_list args )
*pf = 0.0;
}
return VLC_SUCCESS;
#if 0
case DEMUX_SET_POSITION:
f = (double) va_arg( args, double );
i64 = stream_Size( p_demux->s );
es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
return stream_Seek( p_demux->s, (int64_t)(i64 * f) );
if( stream_Seek( p_demux->s, (int64_t)(i64 * f) ) || ReSynch( p_demux ) )
{
return VLC_EGENERIC;
}
p_sys->i_time = -1; /* Invalidate time display */
return VLC_SUCCESS;
case DEMUX_GET_TIME:
pi64 = (int64_t*)va_arg( args, int64_t * );
if( p_sys->i_mux_rate > 0 )
if( p_sys->i_time < 0 )
{
*pi64 = (int64_t)1000000 * ( stream_Tell( p_demux->s ) / 50 ) / p_sys->i_mux_rate;
return VLC_SUCCESS;
}
*pi64 = 0;
return VLC_EGENERIC;
}
*pi64 = p_sys->i_time;
return VLC_SUCCESS;
#if 0
case DEMUX_GET_LENGTH:
pi64 = (int64_t*)va_arg( args, int64_t * );
if( p_sys->i_mux_rate > 0 )
......@@ -372,4 +312,166 @@ static int Control( demux_t *p_demux, int i_query, va_list args )
}
}
/*****************************************************************************
* ReSynch:
*****************************************************************************/
static int ReSynch( demux_t *p_demux )
{
uint8_t *p_peek;
int i_skip;
int i_peek;
while( !p_demux->b_die )
{
if( ( i_peek = stream_Peek( p_demux->s, &p_peek, 1024 ) ) < 8 )
{
return VLC_EGENERIC;
}
i_skip = 0;
while( i_skip < i_peek - 4 )
{
if( !strncmp( p_peek, "NSVf", 4 ) || !strncmp( p_peek, "NSVs", 4 ) )
{
if( i_skip > 0 )
{
stream_Read( p_demux->s, NULL, i_skip );
}
return VLC_SUCCESS;
}
p_peek++;
i_skip++;
}
stream_Read( p_demux->s, NULL, i_skip );
}
return VLC_EGENERIC;
}
/*****************************************************************************
* ReadNSVf:
*****************************************************************************/
static int ReadNSVf( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
uint8_t *p;
int i_size;
msg_Dbg( p_demux, "New NSVf chunk" );
if( stream_Peek( p_demux->s, &p, 8 ) < 8 )
{
return VLC_EGENERIC;
}
i_size = GetDWLE( &p[4] );
msg_Dbg( p_demux, " - size=%d", i_size );
return stream_Read( p_demux->s, NULL, i_size ) == i_size ? VLC_SUCCESS : VLC_EGENERIC;
}
/*****************************************************************************
* ReadNSVf:
*****************************************************************************/
static int ReadNSVs( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
uint8_t header[19];
vlc_fourcc_t fcc;
if( stream_Read( p_demux->s, header, 19 ) < 19 )
{
msg_Warn( p_demux, "cannot read" );
return VLC_EGENERIC;
}
msg_Dbg( p_demux, "New NSVs chunk" );
/* Video */
switch( ( fcc = VLC_FOURCC( header[4], header[5], header[6], header[7] ) ) )
{
case VLC_FOURCC( 'V', 'P', '3', ' ' ):
case VLC_FOURCC( 'V', 'P', '3', '1' ):
fcc = VLC_FOURCC( 'V', 'P', '3', '1' );
break;
case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
break;
default:
msg_Warn( p_demux, "unknow codec" );
break;
}
if( fcc != VLC_FOURCC( 'N', 'O', 'N', 'E' ) && fcc != p_sys->fmt_video.i_codec )
{
es_format_Init( &p_sys->fmt_video, VIDEO_ES, fcc );
p_sys->fmt_video.video.i_width = GetWLE( &header[12] );
p_sys->fmt_video.video.i_height = GetWLE( &header[14] );
if( p_sys->p_video )
{
es_out_Del( p_demux->out, p_sys->p_video );
}
p_sys->p_video = es_out_Add( p_demux->out, &p_sys->fmt_video );
msg_Dbg( p_demux, " - video `%4.4s' %dx%d",
(char*)&fcc,
p_sys->fmt_video.video.i_width,
p_sys->fmt_video.video.i_height );
}
/* Audio */
switch( ( fcc = VLC_FOURCC( header[8], header[9], header[10], header[11] ) ) )
{
case VLC_FOURCC( 'M', 'P', '3', ' ' ):
fcc = VLC_FOURCC( 'm', 'p', 'g', 'a' );
break;
case VLC_FOURCC( 'P', 'C', 'M', ' ' ):
fcc = VLC_FOURCC( 'a', 'r', 'a', 'w' );
break;
case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
break;
default:
msg_Warn( p_demux, "unknow codec" );
break;
}
if( fcc != VLC_FOURCC( 'N', 'O', 'N', 'E' ) && fcc != p_sys->fmt_audio.i_codec )
{
msg_Dbg( p_demux, " - audio `%4.4s'", (char*)&fcc );
if( p_sys->p_audio )
{
es_out_Del( p_demux->out, p_sys->p_audio );
p_sys->p_audio = NULL;
}
es_format_Init( &p_sys->fmt_audio, AUDIO_ES, fcc );
}
if( header[16]&0x80 )
{
switch( header[16]&0x7f )
{
case 1: /* 29.97 fps */
p_sys->i_pcr_inc = 33367;
break;
case 3: /* 23.976 fps */
p_sys->i_pcr_inc = 41708;
break;
case 5: /* 14.98 fps */
p_sys->i_pcr_inc = 66755;
break;
default:
msg_Dbg( p_demux, "unknow fps (0x%x)", header[16] );
p_sys->i_pcr_inc = 40000;
break;
}
}
else if( header[16] != 0 )
{
p_sys->i_pcr_inc = 1000000 / header[16];
}
else
{
msg_Dbg( p_demux, "invalid fps (0x00)" );
p_sys->i_pcr_inc = 40000;
}
msg_Dbg( p_demux, " - fps=%.3f", 1000000.0 / (double)p_sys->i_pcr_inc );
return VLC_SUCCESS;
}
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