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Commit 71082206 authored by Laurent Aimar's avatar Laurent Aimar
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* asf: added an alias "asfh" : it creates special stream to allow using 

http output as mmsh server (see next commits).
parent ce0b8f58
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Showing with 84 additions and 10 deletions
modules/mux/asf.c
View file @ 71082206
......@@ -2,7 +2,7 @@
* asf.c
*****************************************************************************
* Copyright (C) 2003 VideoLAN
* $Id: asf.c,v 1.2 2003/08/24 22:20:43 fenrir Exp $
* $Id: asf.c,v 1.3 2003/08/25 01:31:25 fenrir Exp $
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
......@@ -42,6 +42,7 @@ vlc_module_begin();
set_description( _("Asf muxer") );
set_capability( "sout mux", 5 );
add_shortcut( "asf" );
add_shortcut( "asfh" );
set_callbacks( Open, Close );
vlc_module_end();
......@@ -89,6 +90,9 @@ struct sout_mux_sys_t
int i_pk_used;
int i_pk_frame;
mtime_t i_pk_dts;
vlc_bool_t b_asf_http;
int i_seq;
};
static int MuxGetStream( sout_mux_t *, int *pi_stream, mtime_t *pi_dts );
......@@ -96,6 +100,7 @@ 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 * );
static sout_buffer_t *asf_stream_end_create( sout_mux_t *);
typedef struct
{
......@@ -129,12 +134,18 @@ static int Open( vlc_object_t *p_this )
p_mux->pf_mux = Mux;
p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
p_sys->b_asf_http = p_mux->psz_mux && !strcmp( p_mux->psz_mux, "asfh" );
if( p_sys->b_asf_http )
{
msg_Dbg( p_mux, "creating asf stream to be used with mmsh" );
}
p_sys->pk = NULL;
p_sys->i_pk_used = 0;
p_sys->i_pk_frame = 0;
p_sys->i_dts_first = -1;
p_sys->i_dts_last = 0;
p_sys->i_bitrate = 0;
p_sys->i_seq = 0;
p_sys->b_write_header = VLC_TRUE;
p_sys->i_track = 1;
......@@ -150,6 +161,7 @@ static int Open( vlc_object_t *p_this )
p_sys->fid.v4[i] = ( (uint64_t)rand() << 8 ) / RAND_MAX;
}
return VLC_SUCCESS;
}
......@@ -160,15 +172,21 @@ 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;
sout_buffer_t *out;
int i;
msg_Dbg( p_mux, "Asf muxer closed" );
if( ( out = asf_stream_end_create( p_mux ) ) )
{
sout_AccessOutWrite( p_mux->p_access, out );
}
/* 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 );
out = asf_header_create( p_mux, VLC_FALSE );
sout_AccessOutWrite( p_mux->p_access, out );
}
for( i = 1; i < p_sys->i_track; i++ )
......@@ -222,6 +240,7 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
uint16_t i_tag;
int i_blockalign = p_input->p_fmt->i_block_align;
int i_bitspersample = 0;
int i_extra = 0;
switch( p_input->p_fmt->i_fourcc )
{
......@@ -230,6 +249,7 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
break;
case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
i_tag = WAVE_FORMAT_MPEGLAYER3;
i_extra = 12;
break;
case VLC_FOURCC( 'w', 'm', 'a', '1' ):
i_tag = WAVE_FORMAT_WMA1;
......@@ -274,12 +294,25 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
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 );
if( p_input->p_fmt->i_extra_data > 0 )
{
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 );
}
else
{
bo_addle_u16( &bo, i_extra );
if( i_tag == WAVE_FORMAT_MPEGLAYER3 )
{
bo_addle_u16( &bo, 1 ); /* wId */
bo_addle_u32( &bo, 2 ); /* fdwFlags */
bo_addle_u16( &bo, 1152 ); /* nBlockSize */
bo_addle_u16( &bo, 1 ); /* nFramesPerBlock */
bo_addle_u16( &bo, 1393 ); /* nCodecDelay */
}
}
if( p_input->p_fmt->i_bitrate > 24000 )
{
p_sys->i_bitrate += p_input->p_fmt->i_bitrate;
......@@ -330,7 +363,7 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
p_input->p_fmt->i_extra_data );
}
p_sys->i_bitrate += 2000000;
p_sys->i_bitrate += 1000000;
break;
}
default:
......@@ -589,6 +622,16 @@ static const guid_t asf_guid_reserved_1 =
{ 0x8E, 0xE6,0x00, 0xC0, 0x0C ,0x20, 0x53, 0x65 }
};
static void asf_chunk_add( bo_t *bo,
int i_type, int i_len, int i_flags, int i_seq )
{
bo_addle_u16( bo, i_type );
bo_addle_u16( bo, i_len + 8 );
bo_addle_u32( bo, i_seq );
bo_addle_u16( bo, i_flags );
bo_addle_u16( bo, i_len + 8 );
}
static sout_buffer_t *asf_header_create( sout_mux_t *p_mux,
vlc_bool_t b_broadcast )
{
......@@ -616,9 +659,18 @@ static sout_buffer_t *asf_header_create( sout_mux_t *p_mux,
{
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 );
if( p_sys->b_asf_http )
{
out = sout_BufferNew( p_mux->p_sout, i_size + 50 + 12 );
bo_init( &bo, out->p_buffer, i_size + 50 + 12 );
asf_chunk_add( &bo, 0x4824, i_size + 50, 0xc00, p_sys->i_seq++ );
}
else
{
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 );
......@@ -698,6 +750,7 @@ static sout_buffer_t *asf_packet_create( sout_mux_t *p_mux,
int i_pos = 0;
uint8_t *p_data= data->p_buffer;
sout_buffer_t *first = NULL, **last = &first;
int i_preheader = p_sys->b_asf_http ? 12 : 0;
while( i_pos < i_data )
{
......@@ -706,9 +759,10 @@ static sout_buffer_t *asf_packet_create( sout_mux_t *p_mux,
if( p_sys->pk == NULL )
{
p_sys->pk = sout_BufferNew( p_mux->p_sout, p_sys->i_packet_size );
p_sys->pk = sout_BufferNew( p_mux->p_sout,
p_sys->i_packet_size + i_preheader);
/* reserve 14 bytes for the packet header */
p_sys->i_pk_used = 14;
p_sys->i_pk_used = 14 + i_preheader;
p_sys->i_pk_frame = 0;
p_sys->i_pk_dts = data->i_dts;
}
......@@ -738,7 +792,13 @@ static sout_buffer_t *asf_packet_create( sout_mux_t *p_mux,
/* 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_init( &bo, p_sys->pk->p_buffer, 14 + i_preheader );
if( p_sys->b_asf_http )
{
asf_chunk_add( &bo, 0x4424,
p_sys->i_packet_size, 0x00, p_sys->i_seq++);
}
bo_add_u8 ( &bo, 0x82 );
bo_addle_u16( &bo, 0 );
bo_add_u8( &bo, 0x11 );
......@@ -764,4 +824,18 @@ static sout_buffer_t *asf_packet_create( sout_mux_t *p_mux,
return first;
}
static sout_buffer_t *asf_stream_end_create( sout_mux_t *p_mux )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
sout_buffer_t *out = NULL;
bo_t bo;
if( p_sys->b_asf_http )
{
out = sout_BufferNew( p_mux->p_sout, 12 );
bo_init( &bo, out->p_buffer, 12 );
asf_chunk_add( &bo, 0x4524, 0, 0x00, p_sys->i_seq++ );
}
return out;
}
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