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a78e273ec5
vlc/modules/mux/ogg.c
Rafaël Carré 25ad0cdef1 mux: fix warnings, fix Control() indentation 
avi/avi_HeaderAdd_str{h,f}(): removes unused parameter
    mp4/Convert{SUBT,AVC1}() GetD263Tag() Get{Text,Vide}Box(): same
    mpeg/ts/BufferChainClean(): same
    ogg/OggCreate{Header,Footer}(): same
2008-01-29 13:55:19 +00:00

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/*****************************************************************************
* ogg.c: ogg muxer module for vlc
*****************************************************************************
* Copyright (C) 2001, 2002, 2006 the VideoLAN team
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_TIME_H
# include <time.h>
#endif
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc/vlc.h>
#include <vlc_sout.h>
#include <vlc_block.h>
#include <vlc_codecs.h>
#include <ogg/ogg.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
vlc_module_begin();
set_description( _("Ogg/OGM muxer") );
set_capability( "sout mux", 10 );
set_category( CAT_SOUT );
set_subcategory( SUBCAT_SOUT_MUX );
add_shortcut( "ogg" );
add_shortcut( "ogm" );
set_callbacks( Open, Close );
vlc_module_end();
/*****************************************************************************
* Exported prototypes
*****************************************************************************/
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
*****************************************************************************/
/* Structures used for OggDS headers used in ogm files */
#define PACKET_TYPE_HEADER 0x01
#define PACKET_TYPE_COMMENT 0x03
#define PACKET_IS_SYNCPOINT 0x08
typedef struct
#ifdef HAVE_ATTRIBUTE_PACKED
__attribute__((__packed__))
#endif
{
int32_t i_width;
int32_t i_height;
} oggds_header_video_t;
typedef struct
#ifdef HAVE_ATTRIBUTE_PACKED
__attribute__((__packed__))
#endif
{
int16_t i_channels;
int16_t i_block_align;
int32_t i_avgbytespersec;
} oggds_header_audio_t;
typedef struct
#ifdef HAVE_ATTRIBUTE_PACKED
__attribute__((__packed__))
#endif
{
uint8_t i_packet_type;
char stream_type[8];
char sub_type[4];
int32_t i_size;
int64_t i_time_unit;
int64_t i_samples_per_unit;
int32_t i_default_len;
int32_t i_buffer_size;
int16_t i_bits_per_sample;
int16_t i_padding_0; /* Because the original is using MSVC packing style */
union
{
oggds_header_video_t video;
oggds_header_audio_t audio;
} header;
int32_t i_padding_1; /* Because the original is using MSVC packing style */
} oggds_header_t;
/*
* 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, i;
for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
{
block_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 &&
block_FifoCount( p_fifo ) == 0 ) continue;
if( block_FifoCount( p_fifo ) )
{
block_t *p_buf;
p_buf = block_FifoShow( p_fifo );
if( i_stream < 0 || p_buf->i_dts < i_dts )
{
i_dts = p_buf->i_dts;
i_stream = i;
}
}
else 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
*****************************************************************************/
typedef struct
{
int i_cat;
int i_fourcc;
int b_new;
mtime_t i_dts;
mtime_t i_length;
int i_packet_no;
int i_serial_no;
int i_keyframe_granule_shift; /* Theora only */
ogg_stream_state os;
oggds_header_t *p_oggds_header;
} ogg_stream_t;
struct sout_mux_sys_t
{
int i_streams;
mtime_t i_start_dts;
int i_next_serial_no;
/* number of logical streams pending to be added */
int i_add_streams;
/* logical streams pending to be deleted */
int i_del_streams;
ogg_stream_t **pp_del_streams;
};
static void OggSetDate( block_t *, mtime_t , mtime_t );
static block_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, mtime_t );
/*****************************************************************************
* Open: Open muxer
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
sout_mux_t *p_mux = (sout_mux_t*)p_this;
sout_mux_sys_t *p_sys;
msg_Info( p_mux, "Open" );
p_sys = malloc( sizeof( sout_mux_sys_t ) );
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_control = Control;
p_mux->pf_addstream = AddStream;
p_mux->pf_delstream = DelStream;
p_mux->pf_mux = Mux;
/* 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();
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: Finalize ogg bitstream and close muxer
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
sout_mux_t *p_mux = (sout_mux_t*)p_this;
sout_mux_sys_t *p_sys = p_mux->p_sys;
msg_Info( p_mux, "Close" );
if( p_sys->i_del_streams )
{
block_t *p_og = NULL;
mtime_t i_dts = -1;
int i;
/* Close the current ogg stream */
msg_Dbg( p_mux, "writing footer" );
block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
/* Remove deleted logical streams */
for( 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 );
FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
FREENULL( p_sys->pp_del_streams[i] );
}
FREENULL( p_sys->pp_del_streams );
p_sys->i_streams -= p_sys->i_del_streams;
/* Write footer */
OggSetDate( p_og, i_dts, 0 );
sout_AccessOutWrite( p_mux->p_access, p_og );
}
free( p_sys );
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( sout_mux_t *p_mux, int i_query, va_list args )
{
VLC_UNUSED(p_mux);
vlc_bool_t *pb_bool;
char **ppsz;
switch( i_query )
{
case MUX_CAN_ADD_STREAM_WHILE_MUXING:
pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
*pb_bool = VLC_TRUE;
return VLC_SUCCESS;
case MUX_GET_ADD_STREAM_WAIT:
pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
*pb_bool = VLC_TRUE;
return VLC_SUCCESS;
case MUX_GET_MIME:
ppsz = (char**)va_arg( args, char ** );
*ppsz = strdup( "application/ogg" );
return VLC_SUCCESS;
default:
return VLC_EGENERIC;
}
}
/*****************************************************************************
* AddStream: Add an elementary stream to the muxed stream
*****************************************************************************/
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 = p_stream = malloc( sizeof( ogg_stream_t ) );
p_stream->i_cat = p_input->p_fmt->i_cat;
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->p_oggds_header = 0;
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', 'g', 'v' ):
case VLC_FOURCC( 'm', 'p', '4', 'v' ):
case VLC_FOURCC( 'D', 'I', 'V', '3' ):
case VLC_FOURCC( 'M', 'J', 'P', 'G' ):
case VLC_FOURCC( 'W', 'M', 'V', '1' ):
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) );
memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
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_FOURCC( 'm', 'p', '4', 'v' ) )
{
memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
}
else if( p_stream->i_fourcc == VLC_FOURCC( 'D', 'I', 'V', '3' ) )
{
memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
}
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,
I64C(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_FOURCC( 't', 'h', 'e', 'o' ):
msg_Dbg( p_mux, "theora stream" );
break;
default:
FREENULL( p_input->p_sys );
return VLC_EGENERIC;
}
break;
case AUDIO_ES:
switch( p_stream->i_fourcc )
{
case VLC_FOURCC( 'v', 'o', 'r', 'b' ):
msg_Dbg( p_mux, "vorbis stream" );
break;
case VLC_FOURCC( 's', 'p', 'x', ' ' ):
msg_Dbg( p_mux, "speex stream" );
break;
case VLC_FOURCC( 'f', 'l', 'a', 'c' ):
msg_Dbg( p_mux, "flac stream" );
break;
default:
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 );
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, I64C(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' ):
p_stream->p_oggds_header = malloc( sizeof(oggds_header_t) );
memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
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:
FREENULL( p_input->p_sys );
return VLC_EGENERIC;
}
break;
default:
FREENULL( p_input->p_sys );
return VLC_EGENERIC;
}
p_stream->b_new = VLC_TRUE;
p_sys->i_add_streams++;
return VLC_SUCCESS;
}
/*****************************************************************************
* DelStream: Delete an elementary stream from the muxed stream
*****************************************************************************/
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;
block_t *p_og;
msg_Dbg( p_mux, "removing input" );
/* flush all remaining data */
if( p_input->p_sys )
{
if( !p_stream->b_new )
{
while( block_FifoCount( p_input->p_fifo ) )
MuxBlock( p_mux, p_input );
}
if( !p_stream->b_new &&
( p_og = OggStreamFlush( p_mux, &p_stream->os, 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[p_sys->i_del_streams++] = p_stream;
}
else
{
/* 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;
}
/*****************************************************************************
* Ogg bitstream manipulation routines
*****************************************************************************/
static block_t *OggStreamFlush( sout_mux_t *p_mux,
ogg_stream_state *p_os, mtime_t i_pts )
{
block_t *p_og, *p_og_first = NULL;
ogg_page og;
while( ogg_stream_flush( p_os, &og ) )
{
/* 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_dts = 0;
p_og->i_pts = i_pts;
p_og->i_length = 0;
i_pts = 0; // write it only once
block_ChainAppend( &p_og_first, p_og );
}
return p_og_first;
}
static block_t *OggStreamPageOut( sout_mux_t *p_mux,
ogg_stream_state *p_os, mtime_t i_pts )
{
block_t *p_og, *p_og_first = NULL;
ogg_page og;
while( ogg_stream_pageout( p_os, &og ) )
{
/* 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_dts = 0;
p_og->i_pts = i_pts;
p_og->i_length = 0;
i_pts = 0; // write them only once
block_ChainAppend( &p_og_first, p_og );
}
return p_og_first;
}
static block_t *OggCreateHeader( sout_mux_t *p_mux )
{
block_t *p_hdr = NULL;
block_t *p_og = NULL;
ogg_packet op;
uint8_t *p_extra;
int i, i_extra;
/* 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++ )
{
sout_input_t *p_input = p_mux->pp_inputs[i];
ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
p_stream->b_new = VLC_FALSE;
msg_Dbg( p_mux, "creating header for %4.4s",
(char *)&p_stream->i_fourcc );
ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
p_stream->i_packet_no = 0;
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' ) )
{
/* First packet in order: vorbis/speex/theora info */
p_extra = p_input->p_fmt->p_extra;
i_extra = p_input->p_fmt->i_extra;
op.bytes = *(p_extra++) << 8;
op.bytes |= (*(p_extra++) & 0xFF);
op.packet = p_extra;
i_extra -= (op.bytes + 2);
if( i_extra < 0 )
{
msg_Err( p_mux, "header data corrupted");
op.bytes += 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 );
/* 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[40] << 6 >> 3) | (op.packet[41] >> 5));
/* granule_shift = i_log( frequency_force -1 ) */
p_stream->i_keyframe_granule_shift = 0;
i_keyframe_frequency_force--;
while( i_keyframe_frequency_force )
{
p_stream->i_keyframe_granule_shift++;
i_keyframe_frequency_force >>= 1;
}
}
}
else if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
{
/* 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 );
}
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++ )
{
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' ) )
{
/* Special case, headers are already there in the incoming stream.
* We need to gather them an mark them as headers. */
int j = 2;
if( p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ) j = 1;
p_extra = p_input->p_fmt->p_extra;
i_extra = p_input->p_fmt->i_extra;
/* Skip 1 header */
op.bytes = *(p_extra++) << 8;
op.bytes |= (*(p_extra++) & 0xFF);
op.packet = p_extra;
p_extra += op.bytes;
i_extra -= (op.bytes + 2);
while( j-- )
{
op.bytes = *(p_extra++) << 8;
op.bytes |= (*(p_extra++) & 0xFF);
op.packet = p_extra;
p_extra += op.bytes;
i_extra -= (op.bytes + 2);
if( i_extra < 0 )
{
msg_Err( p_mux, "header data corrupted");
op.bytes += i_extra;
}
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 );
block_ChainAppend( &p_hdr, p_og );
}
}
else if( p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
{
uint8_t com[128];
int i_com;
/* comment */
com[0] = PACKET_TYPE_COMMENT;
i_com = snprintf( (char *)(com+1), 127,
PACKAGE_VERSION" stream output" )
+ 1;
op.packet = com;
op.bytes = i_com;
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 );
block_ChainAppend( &p_hdr, p_og );
}
/* Special case for mp4v and flac */
if( ( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) ||
p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ) &&
p_input->p_fmt->i_extra )
{
/* 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_FOURCC( 'f', 'l', 'a', 'c' ) )
{
/* 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 );
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 |= BLOCK_FLAG_HEADER;
}
return p_hdr;
}
static block_t *OggCreateFooter( sout_mux_t *p_mux )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
block_t *p_hdr = NULL;
block_t *p_og;
ogg_packet op;
int i;
/* flush all remaining data */
for( i = 0; i < p_mux->i_nb_inputs; i++ )
{
ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
/* skip newly added streams */
if( p_stream->b_new ) continue;
if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
{
OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
sout_AccessOutWrite( p_mux->p_access, p_og );
}
}
/* Write eos packets for each stream. */
for( i = 0; i < p_mux->i_nb_inputs; i++ )
{
ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
/* skip newly added streams */
if( p_stream->b_new ) continue;
op.packet = NULL;
op.bytes = 0;
op.b_o_s = 0;
op.e_o_s = 1;
op.granulepos = -1;
op.packetno = p_stream->i_packet_no++;
ogg_stream_packetin( &p_stream->os, &op );
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
block_ChainAppend( &p_hdr, p_og );
ogg_stream_clear( &p_stream->os );
}
for( i = 0; i < p_sys->i_del_streams; i++ )
{
op.packet = NULL;
op.bytes = 0;
op.b_o_s = 0;
op.e_o_s = 1;
op.granulepos = -1;
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 );
block_ChainAppend( &p_hdr, p_og );
ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
}
return p_hdr;
}
static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
{
int i_count;
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++;
}
i_delta = i_length / i_count;
for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
{
p_tmp->i_dts = i_dts;
p_tmp->i_length = i_delta;
i_dts += i_delta;
}
}
/*****************************************************************************
* Mux: multiplex available data in input fifos into the Ogg bitstream
*****************************************************************************/
static int Mux( sout_mux_t *p_mux )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
block_t *p_og = NULL;
int i_stream;
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 )
{
msg_Dbg( p_mux, "waiting for data..." );
return VLC_SUCCESS;
}
if( p_sys->i_streams )
{
/* Close current ogg stream */
int i;
msg_Dbg( p_mux, "writing footer" );
block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
/* Remove deleted logical streams */
for( i = 0; i < p_sys->i_del_streams; i++ )
{
FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
FREENULL( p_sys->pp_del_streams[i] );
}
FREENULL( p_sys->pp_del_streams );
p_sys->i_streams = 0;
}
msg_Dbg( p_mux, "writing header" );
p_sys->i_start_dts = i_dts;
p_sys->i_streams = p_mux->i_nb_inputs;
p_sys->i_del_streams = 0;
p_sys->i_add_streams = 0;
block_ChainAppend( &p_og, OggCreateHeader( p_mux ) );
/* Write header and/or footer */
OggSetDate( p_og, i_dts, 0 );
sout_AccessOutWrite( p_mux->p_access, p_og );
p_og = NULL;
}
for( ;; )
{
if( MuxGetStream( p_mux, &i_stream, 0 ) < 0 ) return VLC_SUCCESS;
MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
}
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_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_data = block_Realloc( p_data, 1, p_data->i_buffer );
p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
}
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_cat == AUDIO_ES )
{
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', ' ' ) )
{
/* 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 / I64C(1000000);
}
else if( p_stream->p_oggds_header )
{
/* 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 / I64C(1000000);
}
}
else if( p_stream->i_cat == VIDEO_ES )
{
if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
{
/* FIXME, we assume only keyframes */
op.granulepos = ( ( p_data->i_dts - p_sys->i_start_dts ) *
p_input->p_fmt->video.i_frame_rate /
p_input->p_fmt->video.i_frame_rate_base /
I64C(1000000) ) << p_stream->i_keyframe_granule_shift;
}
else if( p_stream->p_oggds_header )
op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * I64C(10) /
p_stream->p_oggds_header->i_time_unit;
}
else if( p_stream->i_cat == SPU_ES )
{
/* granulepos is in milisec */
op.granulepos = ( p_data->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 */
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 );
}
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 )
{
p_stream->i_dts = p_data->i_dts;
}
p_stream->i_length += p_data->i_length;
}
block_Release( p_data );
return VLC_SUCCESS;
}
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