* directx.c: Windows DirectX audio output method
*****************************************************************************
* Copyright (C) 2001 VideoLAN
- * $Id: directx.c,v 1.27 2004/02/26 17:02:17 gbazin Exp $
+ * $Id$
*
- * Authors: Gildas Bazin <gbazin@netcourrier.com>
+ * 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
int i_frame_size; /* Size in bytes of one frame */
vlc_bool_t b_chan_reorder; /* do we need channel reordering */
- int *pi_chan_table;
+ int pi_chan_table[AOUT_CHAN_MAX];
uint32_t i_channel_mask;
+ uint32_t i_bits_per_sample;
+ uint32_t i_channels;
};
-static const uint32_t pi_channels_in[] =
+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 };
+ AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
+static const uint32_t pi_channels_in[] =
+ { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
+ SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT,
+ SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
+ SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY, 0 };
static const uint32_t pi_channels_out[] =
{ SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
+ SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY,
SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
- SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY };
-static const uint32_t pi_channels_ordered[] =
- { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT, SPEAKER_FRONT_CENTER,
- SPEAKER_LOW_FREQUENCY,
- SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT };
+ SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT, 0 };
/*****************************************************************************
* Local prototypes.
static void DirectSoundThread ( notification_thread_t * );
static int FillBuffer ( aout_instance_t *, int, aout_buffer_t * );
-static void CheckReordering ( aout_instance_t *, int );
-static void InterleaveFloat32 ( float *, float *, int *, int );
-static void InterleaveS16 ( int16_t *, int16_t *, int *, int );
-
/*****************************************************************************
* Module descriptor
*****************************************************************************/
p_aout->output.p_sys->p_dsnotify = NULL;
p_aout->output.p_sys->p_notif = NULL;
p_aout->output.p_sys->b_playing = 0;
- p_aout->output.p_sys->pi_chan_table = NULL;
p_aout->output.pf_play = Play;
aout_VolumeSoftInit( p_aout );
static void CloseAudio( vlc_object_t *p_this )
{
aout_instance_t * p_aout = (aout_instance_t *)p_this;
+ aout_sys_t *p_sys = p_aout->output.p_sys;
msg_Dbg( p_aout, "CloseAudio" );
/* kill the position notification thread, if any */
- if( p_aout->output.p_sys->p_notif )
+ if( p_sys->p_notif )
{
- vlc_object_detach( p_aout->output.p_sys->p_notif );
- if( p_aout->output.p_sys->p_notif->b_thread )
+ vlc_object_detach( p_sys->p_notif );
+ if( p_sys->p_notif->b_thread )
{
- p_aout->output.p_sys->p_notif->b_die = 1;
+ p_sys->p_notif->b_die = 1;
- if( !p_aout->output.p_sys->b_playing )
+ if( !p_sys->b_playing )
/* wake up the audio thread */
- SetEvent(
- p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
+ SetEvent( p_sys->p_notif->p_events[0].hEventNotify );
- vlc_thread_join( p_aout->output.p_sys->p_notif );
+ vlc_thread_join( p_sys->p_notif );
}
- vlc_object_destroy( p_aout->output.p_sys->p_notif );
+ vlc_object_destroy( p_sys->p_notif );
}
/* release the secondary buffer */
DestroyDSBuffer( p_aout );
/* finally release the DirectSound object */
- if( p_aout->output.p_sys->p_dsobject )
- IDirectSound_Release( p_aout->output.p_sys->p_dsobject );
+ if( p_sys->p_dsobject ) IDirectSound_Release( p_sys->p_dsobject );
/* free DSOUND.DLL */
- if( p_aout->output.p_sys->hdsound_dll )
- FreeLibrary( p_aout->output.p_sys->hdsound_dll );
-
- if( p_aout->output.p_sys->pi_chan_table )
- free( p_aout->output.p_sys->pi_chan_table );
+ if( p_sys->hdsound_dll ) FreeLibrary( p_sys->hdsound_dll );
- free( p_aout->output.p_sys );
+ free( p_sys );
}
/*****************************************************************************
waveformat.Format.nAvgBytesPerSec =
waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;
+ p_aout->output.p_sys->i_bits_per_sample = waveformat.Format.wBitsPerSample;
+ p_aout->output.p_sys->i_channels = i_nb_channels;
+
/* Then fill in the direct sound descriptor */
memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
dsbdesc.dwSize = sizeof(DSBUFFERDESC);
}
p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask;
- CheckReordering( p_aout, i_nb_channels );
+
+ p_aout->output.p_sys->b_chan_reorder =
+ aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
+ waveformat.dwChannelMask, i_nb_channels,
+ p_aout->output.p_sys->pi_chan_table );
+
+ if( p_aout->output.p_sys->b_chan_reorder )
+ {
+ msg_Dbg( p_aout, "channel reordering needed" );
+ }
return VLC_SUCCESS;
aout_buffer_t *p_buffer )
{
notification_thread_t *p_notif = p_aout->output.p_sys->p_notif;
+ aout_sys_t *p_sys = p_aout->output.p_sys;
void *p_write_position, *p_wrap_around;
long l_bytes1, l_bytes2;
HRESULT dsresult;
/* Before copying anything, we have to lock the buffer */
dsresult = IDirectSoundBuffer_Lock(
- p_aout->output.p_sys->p_dsbuffer, /* DS buffer */
+ p_sys->p_dsbuffer, /* DS buffer */
i_frame * p_notif->i_frame_size, /* Start offset */
p_notif->i_frame_size, /* Number of bytes */
&p_write_position, /* Address of lock start */
0 ); /* Flags */
if( dsresult == DSERR_BUFFERLOST )
{
- IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
+ IDirectSoundBuffer_Restore( p_sys->p_dsbuffer );
dsresult = IDirectSoundBuffer_Lock(
- p_aout->output.p_sys->p_dsbuffer,
+ p_sys->p_dsbuffer,
i_frame * p_notif->i_frame_size,
p_notif->i_frame_size,
&p_write_position,
{
memset( p_write_position, 0, l_bytes1 );
}
- else if( p_aout->output.p_sys->b_chan_reorder )
- {
- /* Do the channel reordering here */
-
- if( p_aout->output.output.i_format == VLC_FOURCC('s','1','6','l') )
- InterleaveS16( (int16_t *)p_buffer->p_buffer,
- (int16_t *)p_write_position,
- p_aout->output.p_sys->pi_chan_table,
- aout_FormatNbChannels( &p_aout->output.output ) );
- else
- InterleaveFloat32( (float *)p_buffer->p_buffer,
- (float *)p_write_position,
- p_aout->output.p_sys->pi_chan_table,
- aout_FormatNbChannels( &p_aout->output.output ) );
-
- aout_BufferFree( p_buffer );
- }
else
{
+ if( p_sys->b_chan_reorder )
+ {
+ /* Do the channel reordering here */
+ aout_ChannelReorder( p_buffer->p_buffer, p_buffer->i_nb_bytes,
+ p_sys->i_channels, p_sys->pi_chan_table,
+ p_sys->i_bits_per_sample );
+ }
+
p_aout->p_vlc->pf_memcpy( p_write_position, p_buffer->p_buffer,
l_bytes1 );
aout_BufferFree( p_buffer );
}
/* Now the data has been copied, unlock the buffer */
- IDirectSoundBuffer_Unlock( p_aout->output.p_sys->p_dsbuffer,
- p_write_position, l_bytes1,
+ IDirectSoundBuffer_Unlock( p_sys->p_dsbuffer, p_write_position, l_bytes1,
p_wrap_around, l_bytes2 );
return VLC_SUCCESS;
msg_Dbg( p_notif, "DirectSoundThread exiting" );
}
-
-/*****************************************************************************
- * CheckReordering: Check if we need to do some channel re-ordering (the ac3
- * channel order is different from the one chosen by
- * Microsoft).
- *****************************************************************************/
-static void CheckReordering( aout_instance_t *p_aout, int i_nb_channels )
-{
- int i, j, k, l;
-
-#define i_channel_mask p_aout->output.p_sys->i_channel_mask
-#define pi_chan_table p_aout->output.p_sys->pi_chan_table
-
- p_aout->output.p_sys->b_chan_reorder = VLC_FALSE;
-
- pi_chan_table = malloc( i_nb_channels * sizeof(int) );
- if( !pi_chan_table )
- {
- return;
- }
-
- for( i = 0, j = 0;
- i < (int)(sizeof(pi_channels_out)/sizeof(uint32_t)); i++ )
- {
- if( i_channel_mask & pi_channels_out[i] )
- {
- for( k = 0, l = 0;
- pi_channels_out[i] != pi_channels_ordered[k]; k++ )
- {
- if( i_channel_mask & pi_channels_ordered[k] )
- {
- l++;
- }
- }
-
- pi_chan_table[j] = l;
-
- j++;
- }
- }
-
- for( i = 0; i < i_nb_channels; i++ )
- {
- if( pi_chan_table[i] != i )
- {
- p_aout->output.p_sys->b_chan_reorder = VLC_TRUE;
- }
- }
-
- if( p_aout->output.p_sys->b_chan_reorder )
- {
- msg_Dbg( p_aout, "channel reordering needed" );
- }
-
-#undef pi_chan_table
-#undef waveformat
-}
-
-/*****************************************************************************
- * InterleaveFloat32/S16: change the channel order to the Microsoft one.
- *****************************************************************************/
-static void InterleaveFloat32( float *p_buf, float *p_buf_out,
- int *pi_chan_table, int i_nb_channels )
-{
- int i, j;
-
- for( i = 0; i < FRAME_SIZE; i++ )
- {
- for( j = 0; j < i_nb_channels; j++ )
- {
- p_buf_out[i*i_nb_channels + pi_chan_table[j]] =
- p_buf[i*i_nb_channels + j];
- }
- }
-}
-
-static void InterleaveS16( int16_t *p_buf, int16_t *p_buf_out,
- int *pi_chan_table, int i_nb_channels )
-{
- int i, j;
-
- for( i = 0; i < FRAME_SIZE; i++ )
- {
- for( j = 0; j < i_nb_channels; j++ )
- {
- p_buf_out[ i*i_nb_channels + pi_chan_table[j]] =
- p_buf[i*i_nb_channels + j];
- }
- }
-}
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