Commit a8498883 authored by David Flynn's avatar David Flynn Committed by Laurent Aimar

mux/ogg: Enable OggDirac support

 - OggDirac support using revised granule_position mapping:
     http://www.diracvideo.org/specification (20081109)
 - Uses p_extra for BOS page
 - Flushes Ogg page after each OggDirac packet
Signed-off-by: default avatarDavid Flynn <davidf@rd.bbc.co.uk>
Signed-off-by: default avatarLaurent Aimar <fenrir@videolan.org>
parent 326b2d49
......@@ -183,6 +183,7 @@ typedef struct
int i_packet_no;
int i_serial_no;
int i_keyframe_granule_shift; /* Theora only */
int i_last_keyframe; /* dirac and eventually theora */
ogg_stream_state os;
oggds_header_t *p_oggds_header;
......@@ -352,7 +353,6 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
case VLC_FOURCC( 'W', 'M', 'V', '2' ):
case VLC_FOURCC( 'W', 'M', 'V', '3' ):
case VLC_FOURCC( 'S', 'N', 'O', 'W' ):
case VLC_FOURCC( 'd', 'r', 'a', 'c' ):
p_stream->p_oggds_header = malloc( sizeof(oggds_header_t) );
if( !p_stream->p_oggds_header )
{
......@@ -392,6 +392,10 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
break;
case VLC_FOURCC( 'd', 'r', 'a', 'c' ):
msg_Dbg( p_mux, "dirac stream" );
break;
case VLC_FOURCC( 't', 'h', 'e', 'o' ):
msg_Dbg( p_mux, "theora stream" );
break;
......@@ -668,6 +672,17 @@ static block_t *OggCreateHeader( sout_mux_t *p_mux )
}
}
}
else if( p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
{
op.packet = p_input->p_fmt->p_extra;
op.bytes = p_input->p_fmt->i_extra;
op.b_o_s = 1;
op.e_o_s = 0;
op.granulepos = ~0;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
}
else if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
{
/* flac stream marker (yeah, only that in the 1st packet) */
......@@ -745,7 +760,8 @@ static block_t *OggCreateHeader( sout_mux_t *p_mux )
block_ChainAppend( &p_hdr, p_og );
}
}
else if( p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
else if( p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
p_stream->i_fourcc != VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
{
uint8_t com[128];
int i_com;
......@@ -956,7 +972,8 @@ static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
if( p_stream->i_fourcc != VLC_FOURCC( 'v', 'o', 'r', 'b' ) &&
p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
p_stream->i_fourcc != VLC_FOURCC( 's', 'p', 'x', ' ' ) &&
p_stream->i_fourcc != VLC_FOURCC( 't', 'h', 'e', 'o' ) )
p_stream->i_fourcc != VLC_FOURCC( 't', 'h', 'e', 'o' ) &&
p_stream->i_fourcc != VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
{
p_data = block_Realloc( p_data, 1, p_data->i_buffer );
p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
......@@ -996,6 +1013,22 @@ static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
p_input->p_fmt->video.i_frame_rate_base /
INT64_C(1000000) ) << p_stream->i_keyframe_granule_shift;
}
else if( p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
{
mtime_t dt = (p_data->i_dts - p_sys->i_start_dts + 1)
* p_input->p_fmt->video.i_frame_rate *2
/ p_input->p_fmt->video.i_frame_rate_base
/ INT64_C(1000000);
mtime_t delay = (p_data->i_pts - p_data->i_dts + 1)
* p_input->p_fmt->video.i_frame_rate *2
/ p_input->p_fmt->video.i_frame_rate_base
/ INT64_C(1000000);
if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
p_stream->i_last_keyframe = dt;
mtime_t dist = dt - p_stream->i_last_keyframe;
op.granulepos = dt << 31 | (dist&0xff00) << 14
| (delay&0x1fff) << 9 | (dist&0xff);
}
else if( p_stream->p_oggds_header )
op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
p_stream->p_oggds_header->i_time_unit;
......@@ -1009,10 +1042,14 @@ static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
ogg_stream_packetin( &p_stream->os, &op );
if( p_stream->i_cat == SPU_ES ||
p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) )
p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
{
/* Subtitles or Speex packets are quite small so they
* need to be flushed to be sent on time */
/* The OggDirac mapping suggests ever so strongly that a
* page flush occurs after each OggDirac packet, so to make
* the timestamps unambiguous */
p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
}
else
......
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