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a78e273ec5
vlc/modules/mux/wav.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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/*****************************************************************************
* wav.c: wav muxer module for vlc
*****************************************************************************
* Copyright (C) 2004, 2006 the VideoLAN team
* $Id$
*
* Authors: 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_CONFIG_H
# include "config.h"
#endif
#include <vlc/vlc.h>
#include <vlc_aout.h>
#include <vlc_sout.h>
#include <vlc_block.h>
#include <vlc_codecs.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
vlc_module_begin();
set_description( _("WAV muxer") );
set_capability( "sout mux", 5 );
set_category( CAT_SOUT );
set_subcategory( SUBCAT_SOUT_MUX );
set_callbacks( Open, Close );
add_shortcut( "wav" );
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 * );
#define MAX_CHANNELS 6
struct sout_mux_sys_t
{
vlc_bool_t b_used;
vlc_bool_t b_header;
vlc_bool_t b_ext;
uint32_t i_data;
/* Wave header for the output data */
uint32_t waveheader[5];
WAVEFORMATEXTENSIBLE waveformat;
uint32_t waveheader2[2];
uint32_t i_channel_mask;
vlc_bool_t b_chan_reorder; /* do we need channel reordering */
int pi_chan_table[AOUT_CHAN_MAX];
};
static const uint32_t pi_channels_src[] =
{ AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
static const uint32_t pi_channels_in[] =
{ WAVE_SPEAKER_FRONT_LEFT, WAVE_SPEAKER_FRONT_RIGHT,
WAVE_SPEAKER_SIDE_LEFT, WAVE_SPEAKER_SIDE_RIGHT,
WAVE_SPEAKER_BACK_LEFT, WAVE_SPEAKER_BACK_RIGHT,
WAVE_SPEAKER_FRONT_CENTER, WAVE_SPEAKER_LOW_FREQUENCY, 0 };
static const uint32_t pi_channels_out[] =
{ WAVE_SPEAKER_FRONT_LEFT, WAVE_SPEAKER_FRONT_RIGHT,
WAVE_SPEAKER_FRONT_CENTER, WAVE_SPEAKER_LOW_FREQUENCY,
WAVE_SPEAKER_BACK_LEFT, WAVE_SPEAKER_BACK_RIGHT,
WAVE_SPEAKER_SIDE_LEFT, WAVE_SPEAKER_SIDE_RIGHT, 0 };
/*****************************************************************************
* 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;
p_mux->pf_control = Control;
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->b_used = VLC_FALSE;
p_sys->b_header = VLC_TRUE;
p_sys->i_data = 0;
p_sys->b_chan_reorder = 0;
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;
free( p_sys );
}
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_FALSE;
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( "audio/wav" );
return VLC_SUCCESS;
default:
return VLC_EGENERIC;
}
}
static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
{
GUID subformat_guid = {0, 0, 0x10,{0x80, 0, 0, 0xaa, 0, 0x38, 0x9b, 0x71}};
sout_mux_sys_t *p_sys = p_mux->p_sys;
WAVEFORMATEX *p_waveformat = &p_sys->waveformat.Format;
int i_bytes_per_sample, i_format;
vlc_bool_t b_ext;
if( p_input->p_fmt->i_cat != AUDIO_ES )
{
msg_Dbg( p_mux, "not an audio stream" );
return VLC_EGENERIC;
}
if( p_sys->b_used )
{
msg_Dbg( p_mux, "can't add more than 1 stream" );
return VLC_EGENERIC;
}
msg_Dbg( p_mux, "adding %i input channels, %iHz",
p_input->p_fmt->audio.i_channels,
p_input->p_fmt->audio.i_rate );
p_sys->i_channel_mask = 0;
if( p_input->p_fmt->audio.i_physical_channels )
{
unsigned int i;
for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
{
if( p_input->p_fmt->audio.i_physical_channels & pi_channels_src[i])
p_sys->i_channel_mask |= pi_channels_in[i];
}
p_sys->b_chan_reorder =
aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
p_sys->i_channel_mask,
p_input->p_fmt->audio.i_channels,
p_sys->pi_chan_table );
msg_Dbg( p_mux, "channel mask: %x, reordering: %i",
p_sys->i_channel_mask, (int)p_sys->b_chan_reorder );
}
i_format = p_input->p_fmt->i_codec == VLC_FOURCC('f', 'l', '3', '2') ?
WAVE_FORMAT_IEEE_FLOAT : WAVE_FORMAT_PCM;
b_ext = p_sys->b_ext = p_input->p_fmt->audio.i_channels > 2;
/* Build a WAV header for the output data */
p_sys->waveheader[0] = VLC_FOURCC('R', 'I', 'F', 'F'); /* MainChunkID */
SetDWLE( &p_sys->waveheader[1], 0 ); /* Length */
p_sys->waveheader[2] = VLC_FOURCC('W', 'A', 'V', 'E'); /* ChunkTypeID */
p_sys->waveheader[3] = VLC_FOURCC('f', 'm', 't', ' '); /* SubChunkID */
SetDWLE( &p_sys->waveheader[4], b_ext ? 40 : 16 ); /* SubChunkLength */
p_sys->waveheader2[0] = VLC_FOURCC('d', 'a', 't', 'a'); /* DataChunkID */
SetDWLE( &p_sys->waveheader2[1], 0 ); /* DataLength */
/* Build a WAVEVFORMAT header for the output data */
memset( &p_sys->waveformat, 0, sizeof(WAVEFORMATEXTENSIBLE) );
SetWLE( &p_waveformat->wFormatTag,
b_ext ? WAVE_FORMAT_EXTENSIBLE : i_format );
SetWLE( &p_waveformat->nChannels,
p_input->p_fmt->audio.i_channels );
SetDWLE( &p_waveformat->nSamplesPerSec, p_input->p_fmt->audio.i_rate );
i_bytes_per_sample = p_input->p_fmt->audio.i_channels *
p_input->p_fmt->audio.i_bitspersample / 8;
SetDWLE( &p_waveformat->nAvgBytesPerSec,
i_bytes_per_sample * p_input->p_fmt->audio.i_rate );
SetWLE( &p_waveformat->nBlockAlign, i_bytes_per_sample );
SetWLE( &p_waveformat->wBitsPerSample,
p_input->p_fmt->audio.i_bitspersample );
SetWLE( &p_waveformat->cbSize, 22 );
SetWLE( &p_sys->waveformat.Samples.wValidBitsPerSample,
p_input->p_fmt->audio.i_bitspersample );
SetDWLE( &p_sys->waveformat.dwChannelMask,
p_sys->i_channel_mask );
p_sys->waveformat.SubFormat = subformat_guid;
p_sys->waveformat.SubFormat.Data1 = i_format;
p_sys->b_used = VLC_TRUE;
return VLC_SUCCESS;
}
static block_t *GetHeader( sout_mux_t *p_mux )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
block_t *p_block =
block_New( p_mux, sizeof( WAVEFORMATEXTENSIBLE ) + 7 * 4 );
SetDWLE( &p_sys->waveheader[1],
20 + (p_sys->b_ext ? 40 : 16) + p_sys->i_data ); /* Length */
SetDWLE( &p_sys->waveheader2[1], p_sys->i_data ); /* DataLength */
memcpy( p_block->p_buffer, &p_sys->waveheader, 5 * 4 );
memcpy( p_block->p_buffer + 5 * 4, &p_sys->waveformat,
sizeof( WAVEFORMATEXTENSIBLE ) );
memcpy( p_block->p_buffer + 5 * 4 +
(p_sys->b_ext ? sizeof( WAVEFORMATEXTENSIBLE ) : 16),
&p_sys->waveheader2, 2 * 4 );
if( !p_sys->b_ext ) p_block->i_buffer -= 24;
return p_block;
}
static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
{
VLC_UNUSED(p_input);
msg_Dbg( p_mux, "removing input" );
msg_Dbg( p_mux, "writing header data" );
if( sout_AccessOutSeek( p_mux->p_access, 0 ) == VLC_SUCCESS )
{
sout_AccessOutWrite( p_mux->p_access, GetHeader( p_mux ) );
}
return VLC_SUCCESS;
}
static int Mux( sout_mux_t *p_mux )
{
sout_mux_sys_t *p_sys = p_mux->p_sys;
sout_input_t *p_input;
if( !p_mux->i_nb_inputs ) return VLC_SUCCESS;
if( p_sys->b_header )
{
msg_Dbg( p_mux, "writing header data" );
sout_AccessOutWrite( p_mux->p_access, GetHeader( p_mux ) );
}
p_sys->b_header = VLC_FALSE;
p_input = p_mux->pp_inputs[0];
while( block_FifoCount( p_input->p_fifo ) > 0 )
{
block_t *p_block = block_FifoGet( p_input->p_fifo );
p_sys->i_data += p_block->i_buffer;
/* Do the channel reordering */
if( p_sys->b_chan_reorder )
aout_ChannelReorder( p_block->p_buffer, p_block->i_buffer,
p_input->p_fmt->audio.i_channels,
p_sys->pi_chan_table,
p_input->p_fmt->audio.i_bitspersample );
sout_AccessOutWrite( p_mux->p_access, p_block );
}
return VLC_SUCCESS;
}
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