/*****************************************************************************
* Open: check file and initializes structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
int i_size;
bool b_matched = false;
float f_fps;
p_sys = malloc( sizeof( demux_sys_t ) );
if( unlikely(p_sys == NULL) )
return VLC_ENOMEM;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys;
p_sys->p_es = NULL;
p_sys->i_time = 0;
p_sys->i_level = 0;
p_sys->psz_separator = NULL;
p_sys->i_frame_size_estimate = 15 * 1024;
b_matched = CheckMimeHeader( p_demux, &i_size);
if( b_matched )
{
p_demux->pf_demux = MimeDemux;
stream_Read( p_demux->s, NULL, i_size );
}
else if( 0 == i_size )
{
/* 0xffd8 identify a JPEG SOI */
if( p_sys->p_peek[0] == 0xFF && p_sys->p_peek[1] == 0xD8 )
{
msg_Dbg( p_demux, "JPEG SOI marker detected" );
p_demux->pf_demux = MjpgDemux;
p_sys->i_level++;
}
else
{
goto error;
}
}
else
{
goto error;
}
f_fps = var_CreateGetFloat( p_demux, "mjpeg-fps" );
p_sys->i_frame_length = 0;
/* Check for jpeg file extension */
p_sys->b_still = false;
p_sys->i_still_end = 0;
if( demux_IsPathExtension( p_demux, ".jpeg" ) ||
demux_IsPathExtension( p_demux, ".jpg" ) )
{
p_sys->b_still = true;
if( f_fps )
{
p_sys->i_still_length = 1000000.0 / f_fps;
}
else
{
/* Defaults to 1fps */
p_sys->i_still_length = 1000000;
}
}
else if ( f_fps )
{
p_sys->i_frame_length = 1000000.0 / f_fps;
}
es_format_Init( &p_sys->fmt, VIDEO_ES, 0 );
p_sys->fmt.i_codec = VLC_CODEC_MJPG;
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
return VLC_SUCCESS;
error:
free( p_sys );
return VLC_EGENERIC;
}
static int MimeDemux( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
int i_size, i;
bool b_match = CheckMimeHeader( p_demux, &i_size );
if( i_size > 0 )
{
stream_Read( p_demux->s, NULL, i_size );
}
else if( i_size < 0 )
{
return 0;
}
else
{
// No MIME header, assume OK
b_match = true;
}
if( !Peek( p_demux, true ) )
{
msg_Warn( p_demux, "cannot peek data" );
return 0;
}
i = 0;
i_size = strlen( p_sys->psz_separator ) + 2;
if( p_sys->i_data_peeked < i_size )
{
msg_Warn( p_demux, "data shortage" );
return 0;
}
for( ;; )
{
while( !( p_sys->p_peek[i] == '-' && p_sys->p_peek[i+1] == '-' ) )
{
i++;
i_size++;
if( i_size >= p_sys->i_data_peeked )
{
msg_Dbg( p_demux, "MIME boundary not found in %d bytes of "
"data", p_sys->i_data_peeked );
if( !Peek( p_demux, false ) )
{
msg_Warn( p_demux, "no more data is available at the "
"moment" );
return 0;
}
}
}
if( !strncmp( p_sys->psz_separator, (char *)(p_sys->p_peek + i + 2),
strlen( p_sys->psz_separator ) ) )
{
break;
}
i++;
i_size++;
}
if( !b_match )
{
msg_Err( p_demux, "discard non-JPEG part" );
stream_Read( p_demux->s, NULL, i );
return 0;
}
return SendBlock( p_demux, i );
}
/*****************************************************************************
* Open: check file and initializes structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
int i_size;
bool b_matched = false;
if( IsMxpeg( p_demux->s ) && !p_demux->b_force )
// let avformat handle this case
return VLC_EGENERIC;
demux_sys_t *p_sys = (demux_sys_t *)malloc( sizeof( demux_sys_t ) ); // sunqueen modify
if( unlikely(p_sys == NULL) )
return VLC_ENOMEM;
p_demux->pf_control = Control;
p_demux->p_sys = p_sys;
p_sys->p_es = NULL;
p_sys->i_time = VLC_TS_0;
p_sys->i_level = 0;
p_sys->psz_separator = NULL;
p_sys->i_frame_size_estimate = 15 * 1024;
char *content_type = stream_ContentType( p_demux->s );
if ( content_type )
{
//FIXME: this is not fully match to RFC
char* boundary = strstr( content_type, "boundary=" );
if( boundary )
{
boundary += strlen( "boundary=" );
size_t len = strlen( boundary );
if( len > 2 && boundary[0] == '"'
&& boundary[len-1] == '"' )
{
boundary[len-1] = '\0';
boundary++;
}
p_sys->psz_separator = strdup( boundary );
if( !p_sys->psz_separator )
{
free( content_type );
goto error;
}
}
free( content_type );
}
b_matched = CheckMimeHeader( p_demux, &i_size);
if( b_matched )
{
p_demux->pf_demux = MimeDemux;
stream_Read( p_demux->s, NULL, i_size );
}
else if( i_size == 0 )
{
/* 0xffd8 identify a JPEG SOI */
if( p_sys->p_peek[0] == 0xFF && p_sys->p_peek[1] == 0xD8 )
{
msg_Dbg( p_demux, "JPEG SOI marker detected" );
p_demux->pf_demux = MjpgDemux;
p_sys->i_level++;
}
else
{
goto error;
}
}
else
{
goto error;
}
/* Frame rate */
float f_fps = var_InheritFloat( p_demux, "mjpeg-fps" );
p_sys->i_still_end = 0;
if( demux_IsPathExtension( p_demux, ".jpeg" ) ||
demux_IsPathExtension( p_demux, ".jpg" ) )
{
/* Plain JPEG file = single still picture */
p_sys->b_still = true;
if( f_fps == 0.f )
/* Defaults to 1fps */
f_fps = 1.f;
}
else
p_sys->b_still = false;
p_sys->i_frame_length = f_fps ? (CLOCK_FREQ / f_fps) : 0;
es_format_Init( &p_sys->fmt, VIDEO_ES, 0 );
p_sys->fmt.i_codec = VLC_CODEC_MJPG;
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
return VLC_SUCCESS;
error:
free( p_sys->psz_separator );
free( p_sys );
return VLC_EGENERIC;
}
