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Commit 4f9a79dd authored by Laurent Aimar's avatar Laurent Aimar
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* asf : asf muxer, not well tested yet.

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/*****************************************************************************
* asf.c
*****************************************************************************
* Copyright (C) 2003 VideoLAN
* $Id: asf.c,v 1.1 2003/08/24 16:38:38 fenrir Exp $
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <stdlib.h>
#include <vlc/vlc.h>
#include <vlc/input.h>
#include <vlc/sout.h>
#include "codecs.h"
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
vlc_module_begin();
set_description( _("Asf muxer") );
set_capability( "sout mux", 5 );
add_shortcut( "asf" );
set_callbacks( Open, Close );
vlc_module_end();
/*****************************************************************************
* Locales prototypes
*****************************************************************************/
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 * );
typedef struct
{
uint32_t v1; /* le */
uint16_t v2; /* le */
uint16_t v3; /* le */
uint8_t v4[8];
} guid_t;
typedef struct
{
int i_id;
int i_cat;
int i_sequence;
int i_extra;
uint8_t *p_extra;
} asf_track_t;
struct sout_mux_sys_t
{
guid_t fid; /* file id */
int i_packet_size;
int64_t i_packet_count;
mtime_t i_dts_first;
int i_track;
asf_track_t track[128];
vlc_bool_t b_write_header;
sout_buffer_t *pk;
int i_pk_used;
int i_pk_frame;
mtime_t i_pk_dts;
};
static int MuxGetStream( sout_mux_t *, int *pi_stream, mtime_t *pi_dts );
static sout_buffer_t *asf_header_create( sout_mux_t *, vlc_bool_t b_broadcast );
static sout_buffer_t *asf_packet_create( sout_mux_t *,
asf_track_t *, sout_buffer_t * );
typedef struct
{
int i_buffer_size;
int i_buffer;
uint8_t *p_buffer;
} bo_t;
static void bo_init ( bo_t *, uint8_t *, int );
static void bo_add_u8 ( bo_t *, uint8_t );
static void bo_addle_u16( bo_t *, uint16_t );
static void bo_addle_u32( bo_t *, uint32_t );
static void bo_addle_u64( bo_t *, uint64_t );
static void bo_add_mem ( bo_t *, uint8_t *, int );
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
sout_mux_t *p_mux = (sout_mux_t*)p_this;
sout_mux_sys_t *p_sys;
int i;
msg_Dbg( p_mux, "Asf muxer opened" );
p_mux->pf_capacity = Capability;
p_mux->pf_addstream = AddStream;
p_mux->pf_delstream = DelStream;
p_mux->pf_mux = Mux;
p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
p_sys->pk = NULL;
p_sys->i_pk_used = 0;
p_sys->i_pk_frame = 0;
p_sys->i_dts_first = -1;
p_sys->b_write_header = VLC_TRUE;
p_sys->i_track = 1;
p_sys->i_packet_size = 4096;
p_sys->i_packet_count= 0;
/* generate a random fid */
srand( mdate() & 0xffffffff );
p_sys->fid.v1 = 0xbabac001;
p_sys->fid.v2 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
p_sys->fid.v3 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
for( i = 0; i < 8; i++ )
{
p_sys->fid.v4[i] = ( (uint64_t)rand() << 8 ) / RAND_MAX;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* Close:
*****************************************************************************/
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;
int i;
msg_Dbg( p_mux, "Asf muxer closed" );
/* rewrite header */
if( !sout_AccessOutSeek( p_mux->p_access, 0 ) )
{
sout_buffer_t *h = asf_header_create( p_mux, VLC_FALSE );
sout_AccessOutWrite( p_mux->p_access, h );
}
for( i = 1; i < p_sys->i_track; i++ )
{
free( p_sys->track[i].p_extra );
}
free( p_sys );
}
/*****************************************************************************
* Capability:
*****************************************************************************/
static int Capability( sout_mux_t *p_mux, int i_query,
void *p_args, void *p_answer )
{
switch( i_query )
{
case SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME:
*(vlc_bool_t*)p_answer = VLC_FALSE;
return( SOUT_MUX_CAP_ERR_OK );
default:
return( SOUT_MUX_CAP_ERR_UNIMPLEMENTED );
}
}
/*****************************************************************************
* AddStream:
*****************************************************************************/
static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
asf_track_t *tk;
bo_t bo;
msg_Dbg( p_mux, "adding input" );
if( p_sys->i_track > 127 )
{
msg_Dbg( p_mux, "cannot add this track (too much track)" );
return VLC_EGENERIC;
}
tk = p_input->p_sys = &p_sys->track[p_sys->i_track];
tk->i_id = p_sys->i_track;
tk->i_cat = p_input->p_fmt->i_cat;
tk->i_sequence = 0;
switch( tk->i_cat )
{
case AUDIO_ES:
{
uint16_t i_tag;
int i_blockalign = p_input->p_fmt->i_block_align;
int i_bitspersample = 0;
switch( p_input->p_fmt->i_fourcc )
{
case VLC_FOURCC( 'a', '5', '2', ' ' ):
i_tag = WAVE_FORMAT_A52;
break;
case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
i_tag = WAVE_FORMAT_MPEGLAYER3;
break;
case VLC_FOURCC( 'w', 'm', 'a', '1' ):
i_tag = WAVE_FORMAT_WMA1;
break;
case VLC_FOURCC( 'w', 'm', 'a', '2' ):
i_tag = WAVE_FORMAT_WMA2;
break;
case VLC_FOURCC( 'w', 'm', 'a', '3' ):
i_tag = WAVE_FORMAT_WMA3;
break;
/* raw codec */
case VLC_FOURCC( 'u', '8', ' ', ' ' ):
i_tag = WAVE_FORMAT_PCM;
i_blockalign= p_input->p_fmt->i_channels;
i_bitspersample = 8;
break;
case VLC_FOURCC( 's', '1', '6', 'l' ):
i_tag = WAVE_FORMAT_PCM;
i_blockalign= 2 * p_input->p_fmt->i_channels;
i_bitspersample = 16;
break;
case VLC_FOURCC( 's', '2', '4', 'l' ):
i_tag = WAVE_FORMAT_PCM;
i_blockalign= 3 * p_input->p_fmt->i_channels;
i_bitspersample = 24;
break;
case VLC_FOURCC( 's', '3', '2', 'l' ):
i_tag = WAVE_FORMAT_PCM;
i_blockalign= 4 * p_input->p_fmt->i_channels;
i_bitspersample = 32;
break;
default:
return VLC_EGENERIC;
}
tk->i_extra = sizeof( WAVEFORMATEX ) + p_input->p_fmt->i_extra_data;
tk->p_extra = malloc( tk->i_extra );
bo_init( &bo, tk->p_extra, tk->i_extra );
bo_addle_u16( &bo, i_tag );
bo_addle_u16( &bo, p_input->p_fmt->i_channels );
bo_addle_u32( &bo, p_input->p_fmt->i_sample_rate );
bo_addle_u32( &bo, p_input->p_fmt->i_bitrate / 8 );
bo_addle_u16( &bo, i_blockalign );
bo_addle_u16( &bo, i_bitspersample );
bo_addle_u16( &bo, p_input->p_fmt->i_extra_data );
bo_add_mem ( &bo, p_input->p_fmt->p_extra_data,
p_input->p_fmt->i_extra_data );
break;
}
case VIDEO_ES:
{
tk->i_extra = 11 + sizeof( BITMAPINFOHEADER ) +
p_input->p_fmt->i_extra_data;
tk->p_extra = malloc( tk->i_extra );
bo_init( &bo, tk->p_extra, tk->i_extra );
bo_addle_u32( &bo, p_input->p_fmt->i_width );
bo_addle_u32( &bo, p_input->p_fmt->i_height );
bo_add_u8 ( &bo, 0x02 ); /* flags */
bo_addle_u16( &bo, sizeof( BITMAPINFOHEADER ) +
p_input->p_fmt->i_extra_data );
bo_addle_u32( &bo, sizeof( BITMAPINFOHEADER ) +
p_input->p_fmt->i_extra_data );
bo_addle_u32( &bo, p_input->p_fmt->i_width );
bo_addle_u32( &bo, p_input->p_fmt->i_height );
bo_addle_u16( &bo, 1 );
bo_addle_u16( &bo, 24 );
if( p_input->p_fmt->i_fourcc == VLC_FOURCC('m','p','4','v') )
{
bo_add_mem( &bo, "MP4S", 4 );
}
else if( p_input->p_fmt->i_fourcc == VLC_FOURCC('D','I','V','3') )
{
bo_add_mem( &bo, "MP43", 4 );
}
else
{
bo_add_mem( &bo, (uint8_t*)&p_input->p_fmt->i_fourcc, 4 );
}
bo_addle_u32( &bo, 0 );
bo_addle_u32( &bo, 0 );
bo_addle_u32( &bo, 0 );
bo_addle_u32( &bo, 0 );
bo_addle_u32( &bo, 0 );
bo_add_mem ( &bo, p_input->p_fmt->p_extra_data,
p_input->p_fmt->i_extra_data );
break;
}
default:
msg_Err(p_mux, "unhandled track type" );
return VLC_EGENERIC;
}
p_sys->i_track++;
return VLC_SUCCESS;
}
/*****************************************************************************
* DelStream:
*****************************************************************************/
static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
{
msg_Dbg( p_mux, "removing input" );
return VLC_SUCCESS;
}
/*****************************************************************************
* Mux:
*****************************************************************************/
static int Mux ( sout_mux_t *p_mux )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
if( p_sys->b_write_header )
{
sout_buffer_t *out = asf_header_create( p_mux, VLC_TRUE );
out->i_flags |= SOUT_BUFFER_FLAGS_HEADER;
sout_AccessOutWrite( p_mux->p_access, out );
p_sys->b_write_header = VLC_FALSE;
}
for( ;; )
{
sout_input_t *p_input;
asf_track_t *tk;
int i_stream;
mtime_t i_dts;
sout_buffer_t *data;
sout_buffer_t *pk;
if( MuxGetStream( p_mux, &i_stream, &i_dts ) )
{
/* not enough data */
return VLC_SUCCESS;
}
if( p_sys->i_dts_first < 0 )
{
p_sys->i_dts_first = i_dts;
}
p_input = p_mux->pp_inputs[i_stream];
tk = (asf_track_t*)p_input->p_sys;
data = sout_FifoGet( p_input->p_fifo );
if( ( pk = asf_packet_create( p_mux, tk, data ) ) )
{
sout_AccessOutWrite( p_mux->p_access, pk );
}
}
return VLC_SUCCESS;
}
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_input_t *p_input = p_mux->pp_inputs[i];
sout_buffer_t *p_data;
if( p_input->p_fifo->i_depth <= 0 )
{
if( p_input->p_fmt->i_cat == AUDIO_ES ||
p_input->p_fmt->i_cat == VIDEO_ES )
{
/* We need that audio+video fifo contain at least 1 packet */
return VLC_EGENERIC;
}
/* SPU */
continue;
}
p_data = sout_FifoShow( p_input->p_fifo );
if( i_stream == -1 ||
p_data->i_dts < i_dts )
{
i_stream = i;
i_dts = p_data->i_dts;
}
}
*pi_stream = i_stream;
*pi_dts = i_dts;
return VLC_SUCCESS;
}
/****************************************************************************
* Asf header construction
****************************************************************************/
/****************************************************************************
* Buffer out
****************************************************************************/
static void bo_init( bo_t *p_bo, uint8_t *p_buffer, int i_size )
{
p_bo->i_buffer_size = i_size;
p_bo->i_buffer = 0;
p_bo->p_buffer = p_buffer;
}
static void bo_add_u8( bo_t *p_bo, uint8_t i )
{
if( p_bo->i_buffer < p_bo->i_buffer_size )
{
p_bo->p_buffer[p_bo->i_buffer] = i;
}
p_bo->i_buffer++;
}
static void bo_addle_u16( bo_t *p_bo, uint16_t i )
{
bo_add_u8( p_bo, i &0xff );
bo_add_u8( p_bo, ( ( i >> 8) &0xff ) );
}
static void bo_addle_u32( bo_t *p_bo, uint32_t i )
{
bo_addle_u16( p_bo, i &0xffff );
bo_addle_u16( p_bo, ( ( i >> 16) &0xffff ) );
}
static void bo_addle_u64( bo_t *p_bo, uint64_t i )
{
bo_addle_u32( p_bo, i &0xffffffff );
bo_addle_u32( p_bo, ( ( i >> 32) &0xffffffff ) );
}
static void bo_add_mem( bo_t *p_bo, uint8_t *p_mem, int i_size )
{
int i_copy = __MIN( i_size, p_bo->i_buffer_size - p_bo->i_buffer );
if( i_copy > 0 )
{
memcpy( &p_bo->p_buffer[p_bo->i_buffer],
p_mem,
i_copy );
}
p_bo->i_buffer += i_size;
}
/****************************************************************************
* guid
****************************************************************************/
static void bo_add_guid( bo_t *p_bo, const guid_t *id )
{
int i;
bo_addle_u32( p_bo, id->v1 );
bo_addle_u16( p_bo, id->v2 );
bo_addle_u16( p_bo, id->v3 );
for( i = 0; i < 8; i++ )
{
bo_add_u8( p_bo, id->v4[i] );
}
}
static const guid_t asf_object_header_guid =
{
0x75B22630,
0x668E,
0x11CF,
{ 0xA6,0xD9, 0x00,0xAA,0x00,0x62,0xCE,0x6C }
};
static const guid_t asf_object_data_guid =
{
0x75B22636,
0x668E,
0x11CF,
{ 0xA6,0xD9, 0x00,0xAA,0x00,0x62,0xCE,0x6C }
};
static const guid_t asf_object_file_properties_guid =
{
0x8cabdca1,
0xa947,
0x11cf,
{ 0x8e,0xe4, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
};
static const guid_t asf_object_stream_properties_guid =
{
0xB7DC0791,
0xA9B7,
0x11CF,
{ 0x8E,0xE6, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
};
static const guid_t asf_object_header_extention_guid =
{
0x5FBF03B5,
0xA92E,
0x11CF,
{ 0x8E,0xE3, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
};
static const guid_t asf_object_stream_type_audio =
{
0xF8699E40,
0x5B4D,
0x11CF,
{ 0xA8,0xFD, 0x00,0x80,0x5F,0x5C,0x44,0x2B }
};
static const guid_t asf_object_stream_type_video =
{
0xbc19efc0,
0x5B4D,
0x11CF,
{ 0xA8,0xFD, 0x00,0x80,0x5F,0x5C,0x44,0x2B }
};
static const guid_t asf_guid_audio_conceal_none =
{
0x20FB5700,
0x5B55,
0x11CF,
{ 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }
};
static const guid_t asf_guid_video_conceal_none =
{
0x20FB5700,
0x5B55,
0x11CF,
{ 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }
};
static const guid_t asf_guid_reserved_1 =
{
0xABD3D211,
0xA9BA,
0x11cf,
{ 0x8E, 0xE6,0x00, 0xC0, 0x0C ,0x20, 0x53, 0x65 }
};
static sout_buffer_t *asf_header_create( sout_mux_t *p_mux,
vlc_bool_t b_broadcast )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
asf_track_t *tk;
int i_size;
sout_buffer_t *out;
bo_t bo;
int i;
/* calculate header size */
i_size = 30 + 104 + 46;
for( i = 1; i < p_sys->i_track; i++ )
{
i_size += 78 + p_sys->track[i].i_extra;
}
out = sout_BufferNew( p_mux->p_sout, i_size + 50 );
bo_init( &bo, out->p_buffer, i_size + 50 );
/* header object */
bo_add_guid ( &bo, &asf_object_header_guid );
bo_addle_u64( &bo, i_size );
bo_addle_u32( &bo, 2 + p_sys->i_track );
bo_add_u8 ( &bo, 1 );
bo_add_u8 ( &bo, 2 );
/* sub object */
/* file properties */
bo_add_guid ( &bo, &asf_object_file_properties_guid );
bo_addle_u64( &bo, 104 );
bo_add_guid ( &bo, &p_sys->fid );
bo_addle_u64( &bo, i_size + p_sys->i_packet_count *
p_sys->i_packet_size ); /* file size */
bo_addle_u64( &bo, 0 ); /* creation date */
bo_addle_u64( &bo, p_sys->i_packet_count );
bo_addle_u64( &bo, 0 ) ; /* play duration */
bo_addle_u64( &bo, 0 ); /* send duration */
bo_addle_u64( &bo, 10000 ); /* preroll duration */
bo_addle_u32( &bo, b_broadcast ? 0x01 : 0x00); /* flags */
bo_addle_u32( &bo, p_sys->i_packet_size ); /* packet size min */
bo_addle_u32( &bo, p_sys->i_packet_size ); /* packet size max */
bo_addle_u32( &bo, 0 ); /* maxbitrate */
/* header extention */
bo_add_guid ( &bo, &asf_object_header_extention_guid );
bo_addle_u64( &bo, 46 );
bo_add_guid ( &bo, &asf_guid_reserved_1 );
bo_addle_u16( &bo, 6 );
bo_addle_u32( &bo, 0 );
/* stream properties */
for( i = 1; i < p_sys->i_track; i++ )
{
tk = &p_sys->track[i];
bo_add_guid ( &bo, &asf_object_stream_properties_guid );
bo_addle_u64( &bo, 78 + tk->i_extra );
if( tk->i_cat == AUDIO_ES )
{
bo_add_guid( &bo, &asf_object_stream_type_audio );
bo_add_guid( &bo, &asf_guid_audio_conceal_none );
}
else if( tk->i_cat == VIDEO_ES )
{
bo_add_guid( &bo, &asf_object_stream_type_video );
bo_add_guid( &bo, &asf_guid_video_conceal_none );
}
bo_addle_u64( &bo, 0 ); /* time offset */
bo_addle_u32( &bo, tk->i_extra );
bo_addle_u32( &bo, 0 ); /* 0 */
bo_addle_u16( &bo, tk->i_id ); /* stream number */
bo_addle_u32( &bo, 0 );
bo_add_mem ( &bo, tk->p_extra, tk->i_extra );
}
/* data object */
bo_add_guid ( &bo, &asf_object_data_guid );
bo_addle_u64( &bo, 50 + p_sys->i_packet_count * p_sys->i_packet_size );
bo_add_guid ( &bo, &p_sys->fid );
bo_addle_u64( &bo, p_sys->i_packet_count );
bo_addle_u16( &bo, 0x101 );
return out;
}
/****************************************************************************
*
****************************************************************************/
static sout_buffer_t *asf_packet_create( sout_mux_t *p_mux,
asf_track_t *tk, sout_buffer_t *data )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
int i_data = data->i_size;
int i_pos = 0;
uint8_t *p_data= data->p_buffer;
sout_buffer_t *first = NULL, **last = &first;
while( i_pos < i_data )
{
bo_t bo;
int i_payload;
if( p_sys->pk == NULL )
{
p_sys->pk = sout_BufferNew( p_mux->p_sout, p_sys->i_packet_size );
/* reserve 14 bytes for the packet header */
p_sys->i_pk_used = 14;
p_sys->i_pk_frame = 0;
p_sys->i_pk_dts = data->i_dts;
}
bo_init( &bo, &p_sys->pk->p_buffer[p_sys->i_pk_used],
p_sys->i_packet_size - p_sys->i_pk_used );
/* add payload (header size = 17) */
i_payload = __MIN( i_data - i_pos,
p_sys->i_packet_size - p_sys->i_pk_used - 17 );
bo_add_u8 ( &bo, 0x80 | tk->i_id );
bo_add_u8 ( &bo, tk->i_sequence );
bo_addle_u32( &bo, i_pos );
bo_add_u8 ( &bo, 0x08 ); /* flags */
bo_addle_u32( &bo, i_data );
bo_addle_u32( &bo, ( data->i_dts - p_sys->i_dts_first )/ 1000 );
bo_addle_u16( &bo, i_payload );
bo_add_mem ( &bo, &p_data[i_pos], i_payload );
i_pos += i_payload;
p_sys->i_pk_used += 17 + i_payload;
p_sys->i_pk_frame++;
if( p_sys->i_pk_used + 14 >= p_sys->i_packet_size )
{
/* not enough data for another payload, flush the packet */
int i_pad = p_sys->i_packet_size - p_sys->i_pk_used;
bo_init( &bo, p_sys->pk->p_buffer, 14 );
bo_add_u8 ( &bo, 0x82 );
bo_addle_u16( &bo, 0 );
bo_add_u8( &bo, 0x11 );
bo_add_u8( &bo, 0x5d );
bo_addle_u16( &bo, i_pad );
bo_addle_u32( &bo, ( p_sys->i_pk_dts - p_sys->i_dts_first )/ 1000 );
bo_addle_u16( &bo, 0 * data->i_length / 1000 );
bo_add_u8( &bo, 0x80 | p_sys->i_pk_frame );
/* append the packet */
*last = p_sys->pk;
last = &p_sys->pk->p_next;
p_sys->pk = NULL;
p_sys->i_packet_count++;
}
}
tk->i_sequence++;
sout_BufferDelete( p_mux->p_sout, data );
return first;
}
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