]> git.sesse.net Git - vlc/blobdiff - modules/mux/ogg.c
Merge branch 'master' of git://git.videolan.org/vlc
[vlc] / modules / mux / ogg.c
index e4e9211e8a754f6767e93bf91eeb02edb35a0a99..a2de8607e32aba42a985b140998c510cd0833f76 100644 (file)
@@ -1,11 +1,11 @@
 /*****************************************************************************
  * ogg.c: ogg muxer module for vlc
  *****************************************************************************
- * Copyright (C) 2001, 2002 VideoLAN
- * $Id: ogg.c,v 1.20 2003/11/21 13:01:05 gbazin Exp $
+ * Copyright (C) 2001, 2002, 2006 the VideoLAN team
+ * $Id$
  *
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- *          Gildas Bazin <gbazin@netcourrier.com>
+ *          Gildas Bazin <gbazin@videolan.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  *****************************************************************************/
 
 /*****************************************************************************
  * Preamble
  *****************************************************************************/
-#include <stdlib.h>
-#include <string.h>
 
-#ifdef HAVE_TIME_H
-#   include <time.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
 #endif
 
-#include <vlc/vlc.h>
-#include <vlc/input.h>
-#include <vlc/sout.h>
-
-#include "codecs.h"
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_sout.h>
+#include <vlc_block.h>
+#include <vlc_codecs.h>
+#include <limits.h>
+#include <vlc_rand.h>
+#include "../demux/xiph.h"
 
 #include <ogg/ogg.h>
 
 /*****************************************************************************
- * Exported prototypes
+ * Module descriptor
  *****************************************************************************/
 static int  Open   ( vlc_object_t * );
 static void Close  ( vlc_object_t * );
 
-static int Capability(sout_mux_t *, int, void *, void * );
-static int AddStream( sout_mux_t *, sout_input_t * );
-static int DelStream( sout_mux_t *, sout_input_t * );
-static int Mux      ( sout_mux_t * );
+vlc_module_begin ()
+    set_description( N_("Ogg/OGM muxer") )
+    set_capability( "sout mux", 10 )
+    set_category( CAT_SOUT )
+    set_subcategory( SUBCAT_SOUT_MUX )
+    add_shortcut( "ogg", "ogm" )
+    set_callbacks( Open, Close )
+vlc_module_end ()
 
-static sout_buffer_t *OggCreateHeader( sout_mux_t *, mtime_t );
-static sout_buffer_t *OggCreateFooter( sout_mux_t *, mtime_t );
 
 /*****************************************************************************
- * Module descriptor
+ * Exported prototypes
  *****************************************************************************/
-vlc_module_begin();
-    set_description( _("Ogg/ogm muxer") );
-    set_capability( "sout mux", 10 );
-    add_shortcut( "ogg" );
-    add_shortcut( "ogm" );
-    set_callbacks( Open, Close );
-vlc_module_end();
+static int Control  ( sout_mux_t *, int, va_list );
+static int AddStream( sout_mux_t *, sout_input_t * );
+static int DelStream( sout_mux_t *, sout_input_t * );
+static int Mux      ( sout_mux_t * );
+static int MuxBlock ( sout_mux_t *, sout_input_t * );
+
+static block_t *OggCreateHeader( sout_mux_t * );
+static block_t *OggCreateFooter( sout_mux_t * );
 
 /*****************************************************************************
  * Misc declarations
  *****************************************************************************/
-#define FREE( p ) if( p ) { free( p ); (p) = NULL; }
 
 /* Structures used for OggDS headers used in ogm files */
 
@@ -126,82 +129,8 @@ typedef struct
 
 } oggds_header_t;
 
-/* Helper writer functions */
-
-#define SetWLE( p, v ) _SetWLE( (uint8_t*)p, v)
-static void _SetWLE( uint8_t *p, uint16_t i_dw )
-{
-    p[1] = ( i_dw >>  8 )&0xff;
-    p[0] = ( i_dw       )&0xff;
-}
-
-#define SetDWLE( p, v ) _SetDWLE( (uint8_t*)p, v)
-static void _SetDWLE( uint8_t *p, uint32_t i_dw )
-{
-    p[3] = ( i_dw >> 24 )&0xff;
-    p[2] = ( i_dw >> 16 )&0xff;
-    p[1] = ( i_dw >>  8 )&0xff;
-    p[0] = ( i_dw       )&0xff;
-}
-#define SetQWLE( p, v ) _SetQWLE( (uint8_t*)p, v)
-static void _SetQWLE( uint8_t *p, uint64_t i_qw )
-{
-    SetDWLE( p,   i_qw&0xffffffff );
-    SetDWLE( p+4, ( i_qw >> 32)&0xffffffff );
-}
-
-/*
- * TODO  move this function to src/stream_output.c (used by nearly all muxers)
- */
-static int MuxGetStream( sout_mux_t *p_mux, int *pi_stream, mtime_t *pi_dts )
-{
-    mtime_t i_dts;
-    int     i_stream;
-    int     i;
-
-    for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
-    {
-        sout_fifo_t  *p_fifo;
-
-        p_fifo = p_mux->pp_inputs[i]->p_fifo;
-
-        /* We don't really need to have anything in the SPU fifo */
-        if( p_mux->pp_inputs[i]->p_fmt->i_cat == SPU_ES &&
-            p_fifo->i_depth == 0 ) continue;
-
-        if( p_fifo->i_depth > 2 ||
-            /* Special case for SPUs */
-            ( p_mux->pp_inputs[i]->p_fmt->i_cat == SPU_ES &&
-              p_fifo->i_depth > 0 ) )
-        {
-            sout_buffer_t *p_buf;
-
-            p_buf = sout_FifoShow( p_fifo );
-            if( i_stream < 0 || p_buf->i_dts < i_dts )
-            {
-                i_dts = p_buf->i_dts;
-                i_stream = i;
-            }
-        }
-        else
-        {
-            // wait that all fifo have at least 3 packets (3 vorbis headers)
-            return( -1 );
-        }
-    }
-    if( pi_stream )
-    {
-        *pi_stream = i_stream;
-    }
-    if( pi_dts )
-    {
-        *pi_dts = i_dts;
-    }
-    return( i_stream );
-}
-
 /*****************************************************************************
- * Definitions of structures and functions used by this plugins 
+ * Definitions of structures and functions used by this plugins
  *****************************************************************************/
 typedef struct
 {
@@ -215,12 +144,13 @@ typedef struct
     int     i_packet_no;
     int     i_serial_no;
     int     i_keyframe_granule_shift; /* Theora only */
+    int     i_last_keyframe; /* dirac and theora */
+    int     i_num_frames; /* Theora only */
+    uint64_t u_last_granulepos; /* Used for correct EOS page */
+    int64_t i_num_keyframes;
     ogg_stream_state os;
 
-    oggds_header_t oggds_header;
-
-    sout_buffer_t *pp_sout_headers[3];
-    int           i_sout_headers;
+    oggds_header_t *p_oggds_header;
 
 } ogg_stream_t;
 
@@ -239,9 +169,8 @@ struct sout_mux_sys_t
     ogg_stream_t **pp_del_streams;
 };
 
-static void OggSetDate( sout_buffer_t *, mtime_t , mtime_t  );
-static sout_buffer_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *,
-                                      mtime_t );
+static void OggSetDate( block_t *, mtime_t , mtime_t  );
+static block_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, mtime_t );
 
 /*****************************************************************************
  * Open: Open muxer
@@ -254,23 +183,25 @@ static int Open( vlc_object_t *p_this )
     msg_Info( p_mux, "Open" );
 
     p_sys                 = malloc( sizeof( sout_mux_sys_t ) );
+    if( !p_sys )
+        return VLC_ENOMEM;
     p_sys->i_streams      = 0;
     p_sys->i_add_streams  = 0;
     p_sys->i_del_streams  = 0;
     p_sys->pp_del_streams = 0;
 
     p_mux->p_sys        = p_sys;
-    p_mux->pf_capacity  = Capability;
+    p_mux->pf_control   = Control;
     p_mux->pf_addstream = AddStream;
     p_mux->pf_delstream = DelStream;
     p_mux->pf_mux       = Mux;
-    p_mux->i_preheader  = 1;
 
     /* First serial number is random.
      * (Done like this because on win32 you need to seed the random number
      *  generator once per thread). */
-    srand( (unsigned int)time( NULL ) );
-    p_sys->i_next_serial_no = rand();
+    uint32_t r;
+    vlc_rand_bytes(&r, sizeof(r));
+    p_sys->i_next_serial_no = r & INT_MAX;
 
     return VLC_SUCCESS;
 }
@@ -287,22 +218,21 @@ static void Close( vlc_object_t * p_this )
 
     if( p_sys->i_del_streams )
     {
-        sout_buffer_t *p_og = NULL;
-        mtime_t i_dts = -1;
-        int i;
+        block_t *p_og = NULL;
+        mtime_t i_dts = p_sys->pp_del_streams[p_sys->i_del_streams - 1]->i_dts;
 
         /* Close the current ogg stream */
         msg_Dbg( p_mux, "writing footer" );
-        sout_BufferChain( &p_og, OggCreateFooter( p_mux, 0 ) );
+        block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
 
         /* Remove deleted logical streams */
-        for( i = 0; i < p_sys->i_del_streams; i++ )
+        for(int i = 0; i < p_sys->i_del_streams; i++ )
         {
-            i_dts = p_sys->pp_del_streams[i]->i_dts;
             ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
-            FREE( p_sys->pp_del_streams[i] );
+            FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
+            FREENULL( p_sys->pp_del_streams[i] );
         }
-        FREE( p_sys->pp_del_streams );
+        FREENULL( p_sys->pp_del_streams );
         p_sys->i_streams -= p_sys->i_del_streams;
 
         /* Write footer */
@@ -313,19 +243,36 @@ static void Close( vlc_object_t * p_this )
     free( p_sys );
 }
 
-static int Capability( sout_mux_t *p_mux, int i_query, void *p_args,
-                       void *p_answer )
+/*****************************************************************************
+ * Control:
+ *****************************************************************************/
+static int Control( sout_mux_t *p_mux, int i_query, va_list args )
 {
+    VLC_UNUSED(p_mux);
+    bool *pb_bool;
+    char **ppsz;
+
    switch( i_query )
    {
-        case SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME:
-            *(vlc_bool_t*)p_answer = VLC_TRUE;
-            return( SOUT_MUX_CAP_ERR_OK );
+       case MUX_CAN_ADD_STREAM_WHILE_MUXING:
+           pb_bool = (bool*)va_arg( args, bool * );
+           *pb_bool = true;
+           return VLC_SUCCESS;
+
+       case MUX_GET_ADD_STREAM_WAIT:
+           pb_bool = (bool*)va_arg( args, bool * );
+           *pb_bool = true;
+           return VLC_SUCCESS;
+
+       case MUX_GET_MIME:
+           ppsz = (char**)va_arg( args, char ** );
+           *ppsz = strdup( "application/ogg" );
+           return VLC_SUCCESS;
+
         default:
-            return( SOUT_MUX_CAP_ERR_UNIMPLEMENTED );
+            return VLC_EGENERIC;
    }
 }
-
 /*****************************************************************************
  * AddStream: Add an elementary stream to the muxed stream
  *****************************************************************************/
@@ -333,128 +280,193 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 {
     sout_mux_sys_t *p_sys = p_mux->p_sys;
     ogg_stream_t   *p_stream;
+    uint16_t i_tag;
 
     msg_Dbg( p_mux, "adding input" );
 
-    p_input->p_sys = (void *)p_stream = malloc( sizeof( ogg_stream_t ) );
+    p_input->p_sys = p_stream = calloc( 1, sizeof( ogg_stream_t ) );
+    if( !p_stream )
+        return VLC_ENOMEM;
 
     p_stream->i_cat       = p_input->p_fmt->i_cat;
-    p_stream->i_fourcc    = p_input->p_fmt->i_fourcc;
+    p_stream->i_fourcc    = p_input->p_fmt->i_codec;
     p_stream->i_serial_no = p_sys->i_next_serial_no++;
     p_stream->i_packet_no = 0;
+    p_stream->i_last_keyframe = 0;
+    p_stream->i_num_keyframes = 0;
+    p_stream->i_num_frames = 0;
 
-    p_stream->i_sout_headers = 0;
+    p_stream->p_oggds_header = 0;
 
-    memset( &p_stream->oggds_header, 0, sizeof(p_stream->oggds_header) );
-    p_stream->oggds_header.i_packet_type = PACKET_TYPE_HEADER;
     switch( p_input->p_fmt->i_cat )
     {
     case VIDEO_ES:
+        if( !p_input->p_fmt->video.i_frame_rate ||
+            !p_input->p_fmt->video.i_frame_rate_base )
+        {
+            msg_Warn( p_mux, "Missing frame rate, assuming 25fps" );
+            p_input->p_fmt->video.i_frame_rate = 25;
+            p_input->p_fmt->video.i_frame_rate_base = 1;
+        }
+
         switch( p_stream->i_fourcc )
         {
-        case VLC_FOURCC( 'm', 'p','4', 'v' ):
-        case VLC_FOURCC( 'D', 'I','V', '3' ):
-            memcpy( p_stream->oggds_header.stream_type, "video", 5 );
-            if( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p','4', 'v' ) )
+        case VLC_CODEC_MP4V:
+        case VLC_CODEC_MPGV:
+        case VLC_CODEC_DIV3:
+        case VLC_CODEC_MJPG:
+        case VLC_CODEC_WMV1:
+        case VLC_CODEC_WMV2:
+        case VLC_CODEC_WMV3:
+        case VLC_CODEC_SNOW:
+            p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
+            if( !p_stream->p_oggds_header )
+            {
+                free( p_stream );
+                return VLC_ENOMEM;
+            }
+            p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
+
+            memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
+            if( p_stream->i_fourcc == VLC_CODEC_MP4V )
             {
-                memcpy( p_stream->oggds_header.sub_type, "XVID", 4 );
+                memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
             }
-            else if( p_stream->i_fourcc == VLC_FOURCC( 'D', 'I','V', '3' ) )
+            else if( p_stream->i_fourcc == VLC_CODEC_DIV3 )
             {
-                memcpy( p_stream->oggds_header.sub_type, "DIV3", 4 );
+                memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
             }
-            SetDWLE( &p_stream->oggds_header.i_size,
-                     sizeof( oggds_header_t ) - 1);
-            SetQWLE( &p_stream->oggds_header.i_time_unit,
-                     I64C(10000000)/(int64_t)25 );  // FIXME (25fps)
-            SetQWLE( &p_stream->oggds_header.i_samples_per_unit, 1 );
-            SetDWLE( &p_stream->oggds_header.i_default_len, 1 ); /* ??? */
-            SetDWLE( &p_stream->oggds_header.i_buffer_size, 1024*1024 );
-            SetWLE( &p_stream->oggds_header.i_bits_per_sample, 0 );
-            SetDWLE( &p_stream->oggds_header.header.video.i_width,
-                     p_input->p_fmt->i_width );
-            SetDWLE( &p_stream->oggds_header.header.video.i_height,
-                     p_input->p_fmt->i_height );
-            msg_Dbg( p_mux, "mp4v/div3 stream" );
+            else
+            {
+                memcpy( p_stream->p_oggds_header->sub_type,
+                        &p_stream->i_fourcc, 4 );
+            }
+            SetDWLE( &p_stream->p_oggds_header->i_size,
+                     sizeof( oggds_header_t ) - 1 );
+            SetQWLE( &p_stream->p_oggds_header->i_time_unit,
+                     INT64_C(10000000) * p_input->p_fmt->video.i_frame_rate_base /
+                     (int64_t)p_input->p_fmt->video.i_frame_rate );
+            SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit, 1 );
+            SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 ); /* ??? */
+            SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 1024*1024 );
+            SetWLE( &p_stream->p_oggds_header->i_bits_per_sample, 0 );
+            SetDWLE( &p_stream->p_oggds_header->header.video.i_width,
+                     p_input->p_fmt->video.i_width );
+            SetDWLE( &p_stream->p_oggds_header->header.video.i_height,
+                     p_input->p_fmt->video.i_height );
+            msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
+            break;
+
+        case VLC_CODEC_DIRAC:
+            msg_Dbg( p_mux, "dirac stream" );
             break;
 
-        case VLC_FOURCC( 't', 'h', 'e', 'o' ):
+        case VLC_CODEC_THEORA:
             msg_Dbg( p_mux, "theora stream" );
             break;
 
         default:
-            FREE( p_input->p_sys );
-            return( VLC_EGENERIC );
+            FREENULL( p_input->p_sys );
+            return VLC_EGENERIC;
         }
         break;
 
     case AUDIO_ES:
         switch( p_stream->i_fourcc )
         {
-        case VLC_FOURCC( 'm', 'p','g', 'a' ):
-        case VLC_FOURCC( 'a', '5','2', ' ' ):
-            memcpy( p_stream->oggds_header.stream_type, "audio", 5 );
-            if( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p','g', 'a' ) )
-            {
-                memcpy( p_stream->oggds_header.sub_type, "55  ", 4 );
-            }
-            else if( p_stream->i_fourcc == VLC_FOURCC( 'a', '5','2', ' ' ) )
-            {
-                memcpy( p_stream->oggds_header.sub_type, "2000", 4 );
-            }
-            SetDWLE( &p_stream->oggds_header.i_size,
-                     sizeof( oggds_header_t ) - 1);
-            SetQWLE( &p_stream->oggds_header.i_time_unit, 0 /* not used */ );
-            SetDWLE( &p_stream->oggds_header.i_default_len, 1 );
-            SetDWLE( &p_stream->oggds_header.i_buffer_size, 30*1024 );
-            SetQWLE( &p_stream->oggds_header.i_samples_per_unit,
-                     p_input->p_fmt->i_sample_rate );
-            SetWLE( &p_stream->oggds_header.i_bits_per_sample, 0 );
-            SetDWLE( &p_stream->oggds_header.header.audio.i_channels,
-                     p_input->p_fmt->i_channels );
-            SetDWLE( &p_stream->oggds_header.header.audio.i_block_align,
-                     p_input->p_fmt->i_block_align );
-            SetDWLE( &p_stream->oggds_header.header.audio.i_avgbytespersec, 0);
-            msg_Dbg( p_mux, "mpga/a52 stream" );
-            break;
-
-        case VLC_FOURCC( 'v', 'o', 'r', 'b' ):
+        case VLC_CODEC_VORBIS:
             msg_Dbg( p_mux, "vorbis stream" );
             break;
 
-        case VLC_FOURCC( 's', 'p', 'x', ' ' ):
+        case VLC_CODEC_SPEEX:
             msg_Dbg( p_mux, "speex stream" );
             break;
 
+        case VLC_CODEC_FLAC:
+            msg_Dbg( p_mux, "flac stream" );
+            break;
+
         default:
-            FREE( p_input->p_sys );
-            return( VLC_EGENERIC );
+            fourcc_to_wf_tag( p_stream->i_fourcc, &i_tag );
+            if( i_tag == WAVE_FORMAT_UNKNOWN )
+            {
+                FREENULL( p_input->p_sys );
+                return VLC_EGENERIC;
+            }
+
+            p_stream->p_oggds_header =
+                malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
+            if( !p_stream->p_oggds_header )
+            {
+                free( p_stream );
+                return VLC_ENOMEM;
+            }
+            memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
+            p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
+
+            SetDWLE( &p_stream->p_oggds_header->i_size,
+                     sizeof( oggds_header_t ) - 1 + p_input->p_fmt->i_extra );
+
+            if( p_input->p_fmt->i_extra )
+            {
+                memcpy( &p_stream->p_oggds_header[1],
+                        p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
+            }
+
+            memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
+
+            memset( p_stream->p_oggds_header->sub_type, 0, 4 );
+            sprintf( p_stream->p_oggds_header->sub_type, "%-x", i_tag );
+
+            SetQWLE( &p_stream->p_oggds_header->i_time_unit, INT64_C(10000000) );
+            SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 );
+            SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 30*1024 );
+            SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit,
+                     p_input->p_fmt->audio.i_rate );
+            SetWLE( &p_stream->p_oggds_header->i_bits_per_sample,
+                    p_input->p_fmt->audio.i_bitspersample );
+            SetDWLE( &p_stream->p_oggds_header->header.audio.i_channels,
+                     p_input->p_fmt->audio.i_channels );
+            SetDWLE( &p_stream->p_oggds_header->header.audio.i_block_align,
+                     p_input->p_fmt->audio.i_blockalign );
+            SetDWLE( &p_stream->p_oggds_header->header.audio.i_avgbytespersec,
+                     p_input->p_fmt->i_bitrate / 8);
+            msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
+            break;
         }
         break;
 
     case SPU_ES:
         switch( p_stream->i_fourcc )
         {
-        case VLC_FOURCC( 's', 'u','b', 't' ):
-            memcpy( p_stream->oggds_header.stream_type, "text", 4 );
+        case VLC_CODEC_SUBT:
+            p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
+            if( !p_stream->p_oggds_header )
+            {
+                free( p_stream );
+                return VLC_ENOMEM;
+            }
+            p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
+
+            memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
             msg_Dbg( p_mux, "subtitles stream" );
             break;
 
         default:
-            FREE( p_input->p_sys );
-            return( VLC_EGENERIC );
+            FREENULL( p_input->p_sys );
+            return VLC_EGENERIC;
         }
         break;
     default:
-        FREE( p_input->p_sys );
-        return( VLC_EGENERIC );
+        FREENULL( p_input->p_sys );
+        return VLC_EGENERIC;
     }
 
-    p_stream->b_new = VLC_TRUE;
+    p_stream->b_new = true;
 
     p_sys->i_add_streams++;
 
-    return( VLC_SUCCESS );
+    return VLC_SUCCESS;
 }
 
 /*****************************************************************************
@@ -464,239 +476,248 @@ static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 {
     sout_mux_sys_t *p_sys  = p_mux->p_sys;
     ogg_stream_t   *p_stream = (ogg_stream_t*)p_input->p_sys;
-    sout_buffer_t  *p_og;
+    block_t *p_og;
 
     msg_Dbg( p_mux, "removing input" );
 
     /* flush all remaining data */
     if( p_input->p_sys )
     {
-        int i;
-
-        if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
+        if( !p_stream->b_new )
         {
-            OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
-            sout_AccessOutWrite( p_mux->p_access, p_og );
+            while( block_FifoCount( p_input->p_fifo ) )
+                MuxBlock( p_mux, p_input );
         }
 
-        for( i = 0; i < p_stream->i_sout_headers; i++ )
+        if( !p_stream->b_new &&
+            ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
         {
-            sout_BufferDelete( p_mux->p_sout, p_stream->pp_sout_headers[i] );
-            p_stream->i_sout_headers = 0;
+            OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
+            sout_AccessOutWrite( p_mux->p_access, p_og );
         }
 
         /* move input in delete queue */
         if( !p_stream->b_new )
         {
-            p_sys->pp_del_streams = realloc( p_sys->pp_del_streams,
-                                             (p_sys->i_del_streams + 1) *
-                                             sizeof(ogg_stream_t *) );
+            p_sys->pp_del_streams = xrealloc( p_sys->pp_del_streams,
+                        (p_sys->i_del_streams + 1) * sizeof(ogg_stream_t *) );
             p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
         }
         else
         {
-            /* Wasn't already added so get rid of it */
-            ogg_stream_clear( &p_stream->os );
-            FREE( p_stream );
+            /* wasn't already added so get rid of it */
+            FREENULL( p_stream->p_oggds_header );
+            FREENULL( p_stream );
             p_sys->i_add_streams--;
         }
     }
 
     p_input->p_sys = NULL;
 
-    return( 0 );
+    return 0;
 }
 
 /*****************************************************************************
  * Ogg bitstream manipulation routines
  *****************************************************************************/
-static sout_buffer_t *OggStreamFlush( sout_mux_t *p_mux,
-                                      ogg_stream_state *p_os, mtime_t i_pts )
+static block_t *OggStreamGetPage( sout_mux_t *p_mux,
+                                  ogg_stream_state *p_os, mtime_t i_pts,
+                                  bool flush )
 {
-    sout_buffer_t *p_og, *p_og_first = NULL;
-    ogg_page      og;
+    (void)p_mux;
+    block_t *p_og, *p_og_first = NULL;
+    ogg_page og;
+    int (*pager)( ogg_stream_state*, ogg_page* ) = flush ? ogg_stream_flush : ogg_stream_pageout;
 
-    for( ;; )
+    while( pager( p_os, &og ) )
     {
-        /* flush all data */
-        int i_result;
-        int i_size;
-        if( ( i_result = ogg_stream_flush( p_os, &og ) ) == 0 )
-        {
-            break;
-        }
-
-        i_size = og.header_len + og.body_len;
-        p_og = sout_BufferNew( p_mux->p_sout, i_size);
+        /* Flush all data */
+        p_og = block_New( p_mux, og.header_len + og.body_len );
 
         memcpy( p_og->p_buffer, og.header, og.header_len );
         memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
-        p_og->i_size    = i_size;
         p_og->i_dts     = 0;
         p_og->i_pts     = i_pts;
         p_og->i_length  = 0;
 
-        i_pts   = 0; // write it only once
+        i_pts = 0; // write it only once
 
-        sout_BufferChain( &p_og_first, p_og );
+        block_ChainAppend( &p_og_first, p_og );
     }
 
-    return( p_og_first );
+    return p_og_first;
 }
 
-static sout_buffer_t *OggStreamPageOut( sout_mux_t *p_mux,
-                                        ogg_stream_state *p_os, mtime_t i_pts )
+static block_t *OggStreamFlush( sout_mux_t *p_mux,
+                                ogg_stream_state *p_os, mtime_t i_pts )
 {
-    sout_buffer_t *p_og, *p_og_first = NULL;
-    ogg_page      og;
-
-    for( ;; )
-    {
-        /* flush all data */
-        int i_result;
-        int i_size;
-        if( ( i_result = ogg_stream_pageout( p_os, &og ) ) == 0 )
-        {
-            break;
-        }
-
-        i_size = og.header_len + og.body_len;
-        p_og = sout_BufferNew( p_mux->p_sout, i_size);
-
-        memcpy( p_og->p_buffer, og.header, og.header_len );
-        memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
-        p_og->i_size    = i_size;
-        p_og->i_dts     = 0;
-        p_og->i_pts     = i_pts;
-        p_og->i_length  = 0;
-
-        i_pts   = 0; // write them only once
-
-        sout_BufferChain( &p_og_first, p_og );
-    }
+    return OggStreamGetPage( p_mux, p_os, i_pts, true );
+}
 
-    return( p_og_first );
+static block_t *OggStreamPageOut( sout_mux_t *p_mux,
+                                  ogg_stream_state *p_os, mtime_t i_pts )
+{
+    return OggStreamGetPage( p_mux, p_os, i_pts, false );
 }
 
-static sout_buffer_t *OggCreateHeader( sout_mux_t *p_mux, mtime_t i_dts )
+static block_t *OggCreateHeader( sout_mux_t *p_mux )
 {
-    sout_buffer_t *p_hdr = NULL;
-    sout_buffer_t *p_og;
-    ogg_packet    op;
+    block_t *p_hdr = NULL;
+    block_t *p_og = NULL;
+    ogg_packet op;
     int i;
 
     /* Write header for each stream. All b_o_s (beginning of stream) packets
      * must appear first in the ogg stream so we take care of them first. */
-    for( i = 0; i < p_mux->i_nb_inputs; i++ )
+    for( int pass = 0; pass < 2; pass++ )
     {
-        ogg_stream_t *p_stream = (ogg_stream_t*)p_mux->pp_inputs[i]->p_sys;
-        p_stream->b_new = VLC_FALSE;
+        for( i = 0; i < p_mux->i_nb_inputs; i++ )
+        {
+            sout_input_t *p_input = p_mux->pp_inputs[i];
+            ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
 
-        msg_Dbg( p_mux, "creating header for %4.4s",
-                 (char *)&p_stream->i_fourcc );
+            bool video = ( p_stream->i_fourcc == VLC_CODEC_THEORA || p_stream->i_fourcc == VLC_CODEC_DIRAC );
+            if( ( ( pass == 0 && !video ) || ( pass == 1 && video ) ) )
+                continue;
 
-        ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
-        p_stream->i_packet_no = 0;
+            msg_Dbg( p_mux, "creating header for %4.4s",
+                     (char *)&p_stream->i_fourcc );
 
-        if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
-            p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
-            p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
-        {
-            /* Special case, headers are already there in the
-             * incoming stream or we backed them up earlier */
+            ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
+            p_stream->b_new = false;
+            p_stream->i_packet_no = 0;
 
-            /* first packet in order: vorbis/speex/theora info */
-            if( !p_stream->i_sout_headers )
+            if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
+                p_stream->i_fourcc == VLC_CODEC_SPEEX ||
+                p_stream->i_fourcc == VLC_CODEC_THEORA )
             {
-                p_og = sout_FifoGet( p_mux->pp_inputs[i]->p_fifo );
-                op.packet = p_og->p_buffer;
-                op.bytes  = p_og->i_size;
+                /* First packet in order: vorbis/speex/theora info */
+                unsigned pi_size[XIPH_MAX_HEADER_COUNT];
+                void     *pp_data[XIPH_MAX_HEADER_COUNT];
+                unsigned i_count;
+                if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
+                                       p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
+                {
+                    i_count = 0;
+                    pi_size[0] = 0;
+                    pp_data[0] = NULL;
+                }
+
+                op.bytes  = pi_size[0];
+                op.packet = pp_data[0];
+                if( pi_size[0] <= 0 )
+                    msg_Err( p_mux, "header data corrupted");
+
                 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_stream->pp_sout_headers[0] =
-                    OggStreamFlush( p_mux, &p_stream->os, 0 );
-                p_stream->i_sout_headers++;
-            }
-            p_og = sout_BufferDuplicate( p_mux->p_sout,
-                                         p_stream->pp_sout_headers[0] );
-
-            /* Get keyframe_granule_shift for theora granulepos calculation */
-            if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
-            {
-                int i_keyframe_frequency_force = 1 << (op.packet[36] >> 3);
+                p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
 
-                /* granule_shift = i_log( frequency_force -1 ) */
-                p_stream->i_keyframe_granule_shift = 0;
-                i_keyframe_frequency_force--;
-                while( i_keyframe_frequency_force )
+                /* Get keyframe_granule_shift for theora granulepos calculation */
+                if( p_stream->i_fourcc == VLC_CODEC_THEORA )
                 {
-                    p_stream->i_keyframe_granule_shift++;
-                    i_keyframe_frequency_force >>= 1;
+                    p_stream->i_keyframe_granule_shift =
+                        ( (op.packet[40] & 0x03) << 3 ) | ( (op.packet[41] & 0xe0) >> 5 );
                 }
+
+                for( unsigned i = 0; i < i_count; i++ )
+                    free( pp_data[i] );
+            }
+            else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
+            {
+                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_CODEC_FLAC )
+            {
+                /* flac stream marker (yeah, only that in the 1st packet) */
+                op.packet = (unsigned char *)"fLaC";
+                op.bytes  = 4;
+                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->p_oggds_header )
+            {
+                /* ds header */
+                op.packet = (uint8_t*)p_stream->p_oggds_header;
+                op.bytes  = p_stream->p_oggds_header->i_size + 1;
+                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
-        {
-            /* ds header */
-            op.packet = (uint8_t*)&p_stream->oggds_header;
-            op.bytes  = sizeof( oggds_header_t );
-            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 );
-        }
 
-        sout_BufferChain( &p_hdr, p_og );
+            block_ChainAppend( &p_hdr, p_og );
+        }
     }
 
     /* Take care of the non b_o_s headers */
     for( i = 0; i < p_mux->i_nb_inputs; i++ )
     {
-        ogg_stream_t *p_stream = (ogg_stream_t*)p_mux->pp_inputs[i]->p_sys;
+        sout_input_t *p_input = p_mux->pp_inputs[i];
+        ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
 
-        if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
-            p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
-            p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
+        if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
+            p_stream->i_fourcc == VLC_CODEC_SPEEX ||
+            p_stream->i_fourcc == VLC_CODEC_THEORA )
         {
+            unsigned pi_size[XIPH_MAX_HEADER_COUNT];
+            void     *pp_data[XIPH_MAX_HEADER_COUNT];
+            unsigned i_count;
+            if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
+                                   p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
+                i_count = 0;
+
             /* Special case, headers are already there in the incoming stream.
              * We need to gather them an mark them as headers. */
-            int j;
-            for( j = 0; j < 2; j++ )
+            for( unsigned i = 1; i < i_count; i++ )
             {
-                if( p_stream->i_sout_headers < j + 2 )
-                {
-                    /* next packets in order: comments and codebooks */
-                    p_og = sout_FifoGet( p_mux->pp_inputs[i]->p_fifo );
-                    op.packet = p_og->p_buffer;
-                    op.bytes  = p_og->i_size;
-                    op.b_o_s  = 0;
-                    op.e_o_s  = 0;
-                    op.granulepos = 0;
-                    op.packetno = p_stream->i_packet_no++;
-                    ogg_stream_packetin( &p_stream->os, &op );
-                    p_stream->pp_sout_headers[j+1] =
-                        OggStreamFlush( p_mux, &p_stream->os, 0 );
-                    p_stream->i_sout_headers++;
-                }
+                op.bytes  = pi_size[i];
+                op.packet = pp_data[i];
+                if( pi_size[i] <= 0 )
+                    msg_Err( p_mux, "header data corrupted");
 
-                p_og = sout_BufferDuplicate( p_mux->p_sout,
-                                             p_stream->pp_sout_headers[j+1] );
-                sout_BufferChain( &p_hdr, p_og );
+                op.b_o_s  = 0;
+                op.e_o_s  = 0;
+                op.granulepos = 0;
+                op.packetno = p_stream->i_packet_no++;
+                ogg_stream_packetin( &p_stream->os, &op );
+
+                if( i == i_count - 1 )
+                    p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
+                else
+                    p_og = OggStreamPageOut( p_mux, &p_stream->os, 0 );
+                if( p_og )
+                    block_ChainAppend( &p_hdr, p_og );
             }
+            for( unsigned i = 0; i < i_count; i++ )
+                free( pp_data[i] );
         }
-        else
+        else if( p_stream->i_fourcc != VLC_CODEC_FLAC &&
+                 p_stream->i_fourcc != VLC_CODEC_DIRAC )
         {
             uint8_t com[128];
             int     i_com;
 
             /* comment */
             com[0] = PACKET_TYPE_COMMENT;
-            i_com = snprintf( &com[1], 128, VERSION" stream output" ) + 1;
+            i_com = snprintf( (char *)(com+1), 127,
+                              PACKAGE_VERSION" stream output" )
+                     + 1;
             op.packet = com;
             op.bytes  = i_com;
             op.b_o_s  = 0;
@@ -705,41 +726,50 @@ static sout_buffer_t *OggCreateHeader( sout_mux_t *p_mux, mtime_t i_dts )
             op.packetno = p_stream->i_packet_no++;
             ogg_stream_packetin( &p_stream->os, &op );
             p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
-            sout_BufferChain( &p_hdr, p_og );
+            block_ChainAppend( &p_hdr, p_og );
         }
 
-        /* Special case for mp4v */
-        if( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) &&
-            p_mux->pp_inputs[i]->p_fmt->i_extra_data )
+        /* Special case for mp4v and flac */
+        if( ( p_stream->i_fourcc == VLC_CODEC_MP4V ||
+              p_stream->i_fourcc == VLC_CODEC_FLAC ) &&
+            p_input->p_fmt->i_extra )
         {
-            /* Send a packet with the VOL data */
-            op.bytes  = p_mux->pp_inputs[i]->p_fmt->i_extra_data;
-            op.packet = p_mux->pp_inputs[i]->p_fmt->p_extra_data;
+            /* Send a packet with the VOL data for mp4v
+             * or STREAMINFO for flac */
+            msg_Dbg( p_mux, "writing extra data" );
+            op.bytes  = p_input->p_fmt->i_extra;
+            op.packet = p_input->p_fmt->p_extra;
+            if( p_stream->i_fourcc == VLC_CODEC_FLAC )
+            {
+                /* Skip the flac stream marker */
+                op.bytes -= 4;
+                op.packet+= 4;
+            }
             op.b_o_s  = 0;
             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 );
-            sout_BufferChain( &p_hdr, p_og );
+            block_ChainAppend( &p_hdr, p_og );
         }
     }
 
     /* set HEADER flag */
     for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
     {
-        p_og->i_flags |= SOUT_BUFFER_FLAGS_HEADER;
+        p_og->i_flags |= BLOCK_FLAG_HEADER;
     }
-    return( p_hdr );
+    return p_hdr;
 }
 
-static sout_buffer_t *OggCreateFooter( sout_mux_t *p_mux, mtime_t i_dts )
+static block_t *OggCreateFooter( sout_mux_t *p_mux )
 {
     sout_mux_sys_t *p_sys = p_mux->p_sys;
-    sout_buffer_t *p_hdr = NULL;
-    sout_buffer_t *p_og;
+    block_t *p_hdr = NULL;
+    block_t *p_og;
     ogg_packet    op;
-    int i;
+    int     i;
 
     /* flush all remaining data */
     for( i = 0; i < p_mux->i_nb_inputs; i++ )
@@ -768,12 +798,12 @@ static sout_buffer_t *OggCreateFooter( sout_mux_t *p_mux, mtime_t i_dts )
         op.bytes  = 0;
         op.b_o_s  = 0;
         op.e_o_s  = 1;
-        op.granulepos = -1;
+        op.granulepos = p_stream->u_last_granulepos;
         op.packetno = p_stream->i_packet_no++;
         ogg_stream_packetin( &p_stream->os, &op );
 
         p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
-        sout_BufferChain( &p_hdr, p_og );
+        block_ChainAppend( &p_hdr, p_og );
         ogg_stream_clear( &p_stream->os );
     }
 
@@ -783,28 +813,31 @@ static sout_buffer_t *OggCreateFooter( sout_mux_t *p_mux, mtime_t i_dts )
         op.bytes  = 0;
         op.b_o_s  = 0;
         op.e_o_s  = 1;
-        op.granulepos = -1;
+        op.granulepos = p_sys->pp_del_streams[i]->u_last_granulepos;
         op.packetno = p_sys->pp_del_streams[i]->i_packet_no++;
         ogg_stream_packetin( &p_sys->pp_del_streams[i]->os, &op );
 
         p_og = OggStreamFlush( p_mux, &p_sys->pp_del_streams[i]->os, 0 );
-        sout_BufferChain( &p_hdr, p_og );
+        block_ChainAppend( &p_hdr, p_og );
         ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
     }
 
-    return( p_hdr );
+    return p_hdr;
 }
 
-static void OggSetDate( sout_buffer_t *p_og, mtime_t i_dts, mtime_t i_length )
+static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
 {
     int i_count;
-    sout_buffer_t *p_tmp;
+    block_t *p_tmp;
     mtime_t i_delta;
 
     for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
     {
         i_count++;
     }
+
+    if( i_count == 0 ) return; /* ignore. */
+
     i_delta = i_length / i_count;
 
     for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
@@ -822,17 +855,16 @@ static void OggSetDate( sout_buffer_t *p_og, mtime_t i_dts, mtime_t i_length )
 static int Mux( sout_mux_t *p_mux )
 {
     sout_mux_sys_t *p_sys = p_mux->p_sys;
-    sout_buffer_t  *p_og = NULL;
-    int            i_stream;
+    block_t        *p_og = NULL;
     mtime_t        i_dts;
 
     if( p_sys->i_add_streams || p_sys->i_del_streams )
     {
         /* Open new ogg stream */
-        if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
+        if( sout_MuxGetStream( p_mux, 1, &i_dts) < 0 )
         {
             msg_Dbg( p_mux, "waiting for data..." );
-            return( VLC_SUCCESS );
+            return VLC_SUCCESS;
         }
 
         if( p_sys->i_streams )
@@ -841,14 +873,15 @@ static int Mux( sout_mux_t *p_mux )
             int i;
 
             msg_Dbg( p_mux, "writing footer" );
-            sout_BufferChain( &p_og, OggCreateFooter( p_mux, 0 ) );
+            block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
 
             /* Remove deleted logical streams */
             for( i = 0; i < p_sys->i_del_streams; i++ )
             {
-                FREE( p_sys->pp_del_streams[i] );
+                FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
+                FREENULL( p_sys->pp_del_streams[i] );
             }
-            FREE( p_sys->pp_del_streams );
+            FREENULL( p_sys->pp_del_streams );
             p_sys->i_streams = 0;
         }
 
@@ -857,7 +890,7 @@ static int Mux( sout_mux_t *p_mux )
         p_sys->i_streams = p_mux->i_nb_inputs;
         p_sys->i_del_streams = 0;
         p_sys->i_add_streams = 0;
-        sout_BufferChain( &p_og, OggCreateHeader( p_mux, i_dts ) );
+        block_ChainAppend( &p_og, OggCreateHeader( p_mux ) );
 
         /* Write header and/or footer */
         OggSetDate( p_og, i_dts, 0 );
@@ -867,106 +900,133 @@ static int Mux( sout_mux_t *p_mux )
 
     for( ;; )
     {
-        sout_input_t  *p_input;
-        ogg_stream_t  *p_stream;
-        sout_buffer_t *p_data;
-        ogg_packet    op;
+        int i_stream = sout_MuxGetStream( p_mux, 1, NULL );
+        if( i_stream < 0 )
+            return VLC_SUCCESS;
+        MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
+    }
 
-        if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
-        {
-            return( VLC_SUCCESS );
-        }
+    return VLC_SUCCESS;
+}
+
+static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
+{
+    sout_mux_sys_t *p_sys = p_mux->p_sys;
+    ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
+    block_t *p_data = block_FifoGet( p_input->p_fifo );
+    block_t *p_og = NULL;
+    ogg_packet op;
+
+    if( p_stream->i_fourcc != VLC_CODEC_VORBIS &&
+        p_stream->i_fourcc != VLC_CODEC_FLAC &&
+        p_stream->i_fourcc != VLC_CODEC_SPEEX &&
+        p_stream->i_fourcc != VLC_CODEC_THEORA &&
+        p_stream->i_fourcc != VLC_CODEC_DIRAC )
+    {
+        p_data = block_Realloc( p_data, 1, p_data->i_buffer );
+        p_data->p_buffer[0] = PACKET_IS_SYNCPOINT;      // FIXME
+    }
 
-        p_input  = p_mux->pp_inputs[i_stream];
-        p_stream = (ogg_stream_t*)p_input->p_sys;
-        p_data   = sout_FifoGet( p_input->p_fifo );
+    op.packet   = p_data->p_buffer;
+    op.bytes    = p_data->i_buffer;
+    op.b_o_s    = 0;
+    op.e_o_s    = 0;
+    op.packetno = p_stream->i_packet_no++;
 
-        if( p_stream->i_fourcc != VLC_FOURCC( 'v', 'o', 'r', 'b' ) &&
-            p_stream->i_fourcc != VLC_FOURCC( 's', 'p', 'x', ' ' ) &&
-            p_stream->i_fourcc != VLC_FOURCC( 't', 'h', 'e', 'o' ) )
+    if( p_stream->i_cat == AUDIO_ES )
+    {
+        if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
+            p_stream->i_fourcc == VLC_CODEC_FLAC ||
+            p_stream->i_fourcc == VLC_CODEC_SPEEX )
         {
-            sout_BufferReallocFromPreHeader( p_mux->p_sout, p_data, 1 );
-            p_data->p_buffer[0] = PACKET_IS_SYNCPOINT;      // FIXME
+            /* number of sample from begining + current packet */
+            op.granulepos =
+                ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
+                (mtime_t)p_input->p_fmt->audio.i_rate / INT64_C(1000000);
         }
-
-        op.packet   = p_data->p_buffer;
-        op.bytes    = p_data->i_size;
-        op.b_o_s    = 0;
-        op.e_o_s    = 0;
-        op.packetno = p_stream->i_packet_no++;
-
-        if( p_stream->i_cat == AUDIO_ES )
+        else if( p_stream->p_oggds_header )
         {
-            if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
-                p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) )
-            {
-                /* number of sample from begining + current packet */
-                op.granulepos =
-                    ( i_dts + p_data->i_length - p_sys->i_start_dts ) *
-                    p_input->p_fmt->i_sample_rate / I64C(1000000);
-            }
-            else
-            {
-                /* number of sample from begining */
-                op.granulepos = ( i_dts - p_sys->i_start_dts ) *
-                    p_stream->oggds_header.i_samples_per_unit / I64C(1000000);
-            }
+            /* number of sample from begining */
+            op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
+                p_stream->p_oggds_header->i_samples_per_unit / INT64_C(1000000);
         }
-        else if( p_stream->i_cat == VIDEO_ES )
+    }
+    else if( p_stream->i_cat == VIDEO_ES )
+    {
+        if( p_stream->i_fourcc == VLC_CODEC_THEORA )
         {
-            if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
+            p_stream->i_num_frames++;
+            if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
             {
-                /* FIXME, we assume only keyframes and 25fps */
-                op.granulepos = ( ( i_dts - p_sys->i_start_dts ) * I64C(25)
-                    / I64C(1000000) ) << p_stream->i_keyframe_granule_shift;
+                p_stream->i_num_keyframes++;
+                p_stream->i_last_keyframe = p_stream->i_num_frames;
             }
-            else
-                op.granulepos = ( i_dts - p_sys->i_start_dts ) * I64C(10) /
-                    p_stream->oggds_header.i_time_unit;
-        }
-        else if( p_stream->i_cat == SPU_ES )
-        {
-            /* granulepos is in milisec */
-            op.granulepos = ( i_dts - p_sys->i_start_dts ) / 1000;
-        }
-
-        ogg_stream_packetin( &p_stream->os, &op );
 
-        if( p_stream->i_cat == SPU_ES ||
-            p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) )
-        {
-            /* Subtitles or Speex packets are quite small so they 
-             * need to be flushed to be sent on time */
-            sout_BufferChain( &p_og, OggStreamFlush( p_mux, &p_stream->os,
-                                                     p_data->i_dts ) );
+            op.granulepos = (p_stream->i_last_keyframe << p_stream->i_keyframe_granule_shift )
+                          | (p_stream->i_num_frames-p_stream->i_last_keyframe);
         }
-        else
+        else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
         {
-            sout_BufferChain( &p_og, OggStreamPageOut( p_mux, &p_stream->os,
-                                                       p_data->i_dts ) );
+            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;
+    }
+    else if( p_stream->i_cat == SPU_ES )
+    {
+        /* granulepos is in millisec */
+        op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
+    }
 
-        if( p_og )
-        {
-            OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
-            p_stream->i_dts = -1;
-            p_stream->i_length = 0;
+    p_stream->u_last_granulepos = op.granulepos;
+    ogg_stream_packetin( &p_stream->os, &op );
 
-            sout_AccessOutWrite( p_mux->p_access, p_og );
+    if( p_stream->i_cat == SPU_ES ||
+        p_stream->i_fourcc == VLC_CODEC_SPEEX ||
+        p_stream->i_fourcc == VLC_CODEC_DIRAC )
+    {
+        /* 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
+    {
+        p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
+    }
 
-            p_og = NULL;
-        }
-        else
+    if( p_og )
+    {
+        OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
+        p_stream->i_dts = -1;
+        p_stream->i_length = 0;
+
+        sout_AccessOutWrite( p_mux->p_access, p_og );
+    }
+    else
+    {
+        if( p_stream->i_dts < 0 )
         {
-            if( p_stream->i_dts < 0 )
-            {
-                p_stream->i_dts = p_data->i_dts;
-            }
-            p_stream->i_length += p_data->i_length;
+            p_stream->i_dts = p_data->i_dts;
         }
-
-        sout_BufferDelete( p_mux->p_sout, p_data );
+        p_stream->i_length += p_data->i_length;
     }
 
-    return( VLC_SUCCESS );
+    block_Release( p_data );
+    return VLC_SUCCESS;
 }