/*****************************************************************************
* common.c : audio output management of common data structures
*****************************************************************************
- * Copyright (C) 2002 VideoLAN
- * $Id: common.c,v 1.18 2003/11/16 21:07:31 gbazin Exp $
+ * Copyright (C) 2002-2007 the VideoLAN team
+ * $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
*
* 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <stdlib.h> /* calloc(), malloc(), free() */
-#include <string.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-#include <vlc/vlc.h>
+#include <assert.h>
-#include "audio_output.h"
+#include <vlc_common.h>
+#include <vlc_aout.h>
#include "aout_internal.h"
-
+#include "libvlc.h"
/*
* Instances management (internal and external)
*/
+#define AOUT_ASSERT_FIFO_LOCKED aout_assert_fifo_locked(p_aout, p_fifo)
+static inline void aout_assert_fifo_locked( aout_instance_t * p_aout, aout_fifo_t * p_fifo )
+{
+#ifndef NDEBUG
+ if( !p_aout )
+ return;
+
+ if( p_fifo == &p_aout->output.fifo )
+ vlc_assert_locked( &p_aout->output_fifo_lock );
+ else
+ {
+ int i;
+ for( i = 0; i < p_aout->i_nb_inputs; i++ )
+ {
+ if( p_fifo == &p_aout->pp_inputs[i]->mixer.fifo)
+ {
+ vlc_assert_locked( &p_aout->input_fifos_lock );
+ break;
+ }
+ }
+ if( i == p_aout->i_nb_inputs )
+ vlc_assert_locked( &p_aout->mixer_lock );
+ }
+#else
+ (void)p_aout;
+ (void)p_fifo;
+#endif
+}
+
+/* Local functions */
+static void aout_Destructor( vlc_object_t * p_this );
+
/*****************************************************************************
* aout_New: initialize aout structure
*****************************************************************************/
aout_instance_t * __aout_New( vlc_object_t * p_parent )
{
aout_instance_t * p_aout;
- vlc_value_t val;
/* Allocate descriptor. */
- p_aout = vlc_object_create( p_parent, VLC_OBJECT_AOUT );
+ p_aout = vlc_custom_create( p_parent, sizeof( *p_aout ), VLC_OBJECT_AOUT,
+ "audio output" );
if( p_aout == NULL )
{
return NULL;
}
/* Initialize members. */
- vlc_mutex_init( p_parent, &p_aout->input_fifos_lock );
- vlc_mutex_init( p_parent, &p_aout->mixer_lock );
- vlc_mutex_init( p_parent, &p_aout->output_fifo_lock );
+ vlc_mutex_init( &p_aout->input_fifos_lock );
+ vlc_mutex_init( &p_aout->mixer_lock );
+ vlc_mutex_init( &p_aout->volume_vars_lock );
+ vlc_mutex_init( &p_aout->output_fifo_lock );
p_aout->i_nb_inputs = 0;
- p_aout->mixer.f_multiplier = 1.0;
- p_aout->mixer.b_error = 1;
+ p_aout->mixer_multiplier = 1.0;
+ p_aout->p_mixer = NULL;
p_aout->output.b_error = 1;
p_aout->output.b_starving = 1;
var_Create( p_aout, "intf-change", VLC_VAR_BOOL );
- val.b_bool = VLC_TRUE;
- var_Set( p_aout, "intf-change", val );
+ var_SetBool( p_aout, "intf-change", true );
+
+ vlc_object_set_destructor( p_aout, aout_Destructor );
+
+ vlc_object_attach( p_aout, p_parent );
return p_aout;
}
/*****************************************************************************
- * aout_Delete: destroy aout structure
+ * aout_Destructor: destroy aout structure
*****************************************************************************/
-void aout_Delete( aout_instance_t * p_aout )
+static void aout_Destructor( vlc_object_t * p_this )
{
- var_Destroy( p_aout, "intf-change" );
-
+ aout_instance_t * p_aout = (aout_instance_t *)p_this;
vlc_mutex_destroy( &p_aout->input_fifos_lock );
vlc_mutex_destroy( &p_aout->mixer_lock );
+ vlc_mutex_destroy( &p_aout->volume_vars_lock );
vlc_mutex_destroy( &p_aout->output_fifo_lock );
+}
- /* Free structure. */
- vlc_object_destroy( p_aout );
+/* Lock ordering rules:
+ *
+ * Vars Mixer Input IFIFO OFIFO (< Inner lock)
+ * Vars No! Yes Yes Yes Yes
+ * Mixer No! No! Yes Yes Yes
+ * Input No! No! No! Yes Yes
+ * In FIFOs No! No! No! No! Yes
+ * Out FIFOs No! No! No! No! No!
+ * (^ Outer lock)
+ */
+#ifdef AOUT_DEBUG
+/* Lock debugging */
+static __thread unsigned aout_locks = 0;
+
+void aout_lock (unsigned i)
+{
+ unsigned allowed;
+ switch (i)
+ {
+ case VOLUME_VARS_LOCK:
+ allowed = 0;
+ break;
+ case MIXER_LOCK:
+ allowed = VOLUME_VARS_LOCK;
+ break;
+ case INPUT_LOCK:
+ allowed = VOLUME_VARS_LOCK|MIXER_LOCK;
+ break;
+ case INPUT_FIFO_LOCK:
+ allowed = VOLUME_VARS_LOCK|MIXER_LOCK|INPUT_LOCK;
+ break;
+ case OUTPUT_FIFO_LOCK:
+ allowed = VOLUME_VARS_LOCK|MIXER_LOCK|INPUT_LOCK|INPUT_FIFO_LOCK;
+ break;
+ default:
+ abort ();
+ }
+
+ if (aout_locks & ~allowed)
+ {
+ fprintf (stderr, "Illegal audio lock transition (%x -> %x)\n",
+ aout_locks, aout_locks|i);
+ vlc_backtrace ();
+ abort ();
+ }
+ aout_locks |= i;
}
+void aout_unlock (unsigned i)
+{
+ assert (aout_locks & i);
+ aout_locks &= ~i;
+}
+#endif
/*
* Formats management (internal and external)
}
/*****************************************************************************
- * aout_FormatPrepare : compute the number of bytes per frame & frame length
+ * aout_BitsPerSample : get the number of bits per sample
*****************************************************************************/
-void aout_FormatPrepare( audio_sample_format_t * p_format )
+unsigned int aout_BitsPerSample( vlc_fourcc_t i_format )
{
- int i_result;
-
- switch ( p_format->i_format )
+ switch( vlc_fourcc_GetCodec( AUDIO_ES, i_format ) )
{
- case VLC_FOURCC('u','8',' ',' '):
- case VLC_FOURCC('s','8',' ',' '):
- i_result = 1;
- break;
-
- case VLC_FOURCC('u','1','6','l'):
- case VLC_FOURCC('s','1','6','l'):
- case VLC_FOURCC('u','1','6','b'):
- case VLC_FOURCC('s','1','6','b'):
- i_result = 2;
- break;
-
- case VLC_FOURCC('f','l','3','2'):
- case VLC_FOURCC('f','i','3','2'):
- i_result = 4;
- break;
-
- case VLC_FOURCC('s','p','d','i'):
- case VLC_FOURCC('a','5','2',' '):
- case VLC_FOURCC('d','t','s',' '):
- case VLC_FOURCC('m','p','g','a'):
- case VLC_FOURCC('m','p','g','3'):
+ case VLC_CODEC_U8:
+ case VLC_CODEC_S8:
+ return 8;
+
+ case VLC_CODEC_U16L:
+ case VLC_CODEC_S16L:
+ case VLC_CODEC_U16B:
+ case VLC_CODEC_S16B:
+ return 16;
+
+ case VLC_CODEC_U24L:
+ case VLC_CODEC_S24L:
+ case VLC_CODEC_U24B:
+ case VLC_CODEC_S24B:
+ return 24;
+
+ case VLC_CODEC_S32L:
+ case VLC_CODEC_S32B:
+ case VLC_CODEC_F32L:
+ case VLC_CODEC_F32B:
+ case VLC_CODEC_FI32:
+ return 32;
+
+ case VLC_CODEC_F64L:
+ case VLC_CODEC_F64B:
+ return 64;
+
default:
/* For these formats the caller has to indicate the parameters
* by hand. */
- return;
+ return 0;
}
+}
- p_format->i_bytes_per_frame = i_result * aout_FormatNbChannels( p_format );
- p_format->i_frame_length = 1;
+/*****************************************************************************
+ * aout_FormatPrepare : compute the number of bytes per frame & frame length
+ *****************************************************************************/
+void aout_FormatPrepare( audio_sample_format_t * p_format )
+{
+ p_format->i_channels = aout_FormatNbChannels( p_format );
+ p_format->i_bitspersample = aout_BitsPerSample( p_format->i_format );
+ if( p_format->i_bitspersample > 0 )
+ {
+ p_format->i_bytes_per_frame = ( p_format->i_bitspersample / 8 )
+ * aout_FormatNbChannels( p_format );
+ p_format->i_frame_length = 1;
+ }
}
/*****************************************************************************
{
switch ( p_format->i_physical_channels & AOUT_CHAN_PHYSMASK )
{
+ case AOUT_CHAN_LEFT:
+ case AOUT_CHAN_RIGHT:
case AOUT_CHAN_CENTER:
if ( (p_format->i_original_channels & AOUT_CHAN_CENTER)
|| (p_format->i_original_channels
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT:
return "2F2R";
+ case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
+ | AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT:
+ return "2F2M";
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT:
return "3F2R";
+ case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
+ | AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT:
+ return "3F2M";
case AOUT_CHAN_CENTER | AOUT_CHAN_LFE:
if ( (p_format->i_original_channels & AOUT_CHAN_CENTER)
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE:
return "2F2R/LFE";
+ case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
+ | AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT | AOUT_CHAN_LFE:
+ return "2F2M/LFE";
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE:
return "3F2R/LFE";
+ case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
+ | AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT | AOUT_CHAN_LFE:
+ return "3F2M/LFE";
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_MIDDLELEFT
| AOUT_CHAN_MIDDLERIGHT:
void aout_FifoInit( aout_instance_t * p_aout, aout_fifo_t * p_fifo,
uint32_t i_rate )
{
+ AOUT_ASSERT_FIFO_LOCKED;
+
+ if( i_rate == 0 )
+ {
+ msg_Err( p_aout, "initialising fifo with zero divider" );
+ }
+
p_fifo->p_first = NULL;
p_fifo->pp_last = &p_fifo->p_first;
- aout_DateInit( &p_fifo->end_date, i_rate );
+ date_Init( &p_fifo->end_date, i_rate, 1 );
}
/*****************************************************************************
void aout_FifoPush( aout_instance_t * p_aout, aout_fifo_t * p_fifo,
aout_buffer_t * p_buffer )
{
+ (void)p_aout;
+ AOUT_ASSERT_FIFO_LOCKED;
+
*p_fifo->pp_last = p_buffer;
p_fifo->pp_last = &p_buffer->p_next;
*p_fifo->pp_last = NULL;
/* Enforce the continuity of the stream. */
- if ( aout_DateGet( &p_fifo->end_date ) )
+ if ( date_Get( &p_fifo->end_date ) )
{
- p_buffer->start_date = aout_DateGet( &p_fifo->end_date );
- p_buffer->end_date = aout_DateIncrement( &p_fifo->end_date,
- p_buffer->i_nb_samples );
+ p_buffer->i_pts = date_Get( &p_fifo->end_date );
+ p_buffer->i_length = date_Increment( &p_fifo->end_date,
+ p_buffer->i_nb_samples );
+ p_buffer->i_length -= p_buffer->i_pts;
}
else
{
- aout_DateSet( &p_fifo->end_date, p_buffer->end_date );
+ date_Set( &p_fifo->end_date, p_buffer->i_pts + p_buffer->i_length );
}
}
mtime_t date )
{
aout_buffer_t * p_buffer;
+ (void)p_aout;
+ AOUT_ASSERT_FIFO_LOCKED;
- aout_DateSet( &p_fifo->end_date, date );
+ date_Set( &p_fifo->end_date, date );
p_buffer = p_fifo->p_first;
while ( p_buffer != NULL )
{
mtime_t difference )
{
aout_buffer_t * p_buffer;
+ (void)p_aout;
+ AOUT_ASSERT_FIFO_LOCKED;
- aout_DateMove( &p_fifo->end_date, difference );
+ date_Move( &p_fifo->end_date, difference );
p_buffer = p_fifo->p_first;
while ( p_buffer != NULL )
{
- p_buffer->start_date += difference;
- p_buffer->end_date += difference;
+ p_buffer->i_pts += difference;
p_buffer = p_buffer->p_next;
}
}
*****************************************************************************/
mtime_t aout_FifoNextStart( aout_instance_t * p_aout, aout_fifo_t * p_fifo )
{
- return aout_DateGet( &p_fifo->end_date );
+ (void)p_aout;
+ AOUT_ASSERT_FIFO_LOCKED;
+ return date_Get( &p_fifo->end_date );
}
/*****************************************************************************
*****************************************************************************/
mtime_t aout_FifoFirstDate( aout_instance_t * p_aout, aout_fifo_t * p_fifo )
{
- return p_fifo->p_first ? p_fifo->p_first->start_date : 0;
+ (void)p_aout;
+ AOUT_ASSERT_FIFO_LOCKED;
+ return p_fifo->p_first ? p_fifo->p_first->i_pts : 0;
}
/*****************************************************************************
aout_buffer_t * aout_FifoPop( aout_instance_t * p_aout, aout_fifo_t * p_fifo )
{
aout_buffer_t * p_buffer;
+ (void)p_aout;
+ AOUT_ASSERT_FIFO_LOCKED;
p_buffer = p_fifo->p_first;
if ( p_buffer == NULL ) return NULL;
void aout_FifoDestroy( aout_instance_t * p_aout, aout_fifo_t * p_fifo )
{
aout_buffer_t * p_buffer;
+ (void)p_aout;
+ AOUT_ASSERT_FIFO_LOCKED;
p_buffer = p_fifo->p_first;
while ( p_buffer != NULL )
aout_BufferFree( p_buffer );
p_buffer = p_next;
}
-}
-
-/*
- * Date management (internal and external)
- */
+ p_fifo->p_first = NULL;
+ p_fifo->pp_last = &p_fifo->p_first;
+}
/*****************************************************************************
- * aout_DateInit : set the divider of an audio_date_t
+ * aout_CheckChannelReorder : Check if we need to do some channel re-ordering
*****************************************************************************/
-void aout_DateInit( audio_date_t * p_date, uint32_t i_divider )
+int aout_CheckChannelReorder( const uint32_t *pi_chan_order_in,
+ const uint32_t *pi_chan_order_out,
+ uint32_t i_channel_mask,
+ int i_channels, int *pi_chan_table )
{
- p_date->date = 0;
- p_date->i_divider = i_divider;
- p_date->i_remainder = 0;
+ bool b_chan_reorder = false;
+ int i, j, k, l;
+
+ if( i_channels > AOUT_CHAN_MAX )
+ return false;
+
+ if( pi_chan_order_in == NULL )
+ pi_chan_order_in = pi_vlc_chan_order_wg4;
+ if( pi_chan_order_out == NULL )
+ pi_chan_order_out = pi_vlc_chan_order_wg4;
+
+ for( i = 0, j = 0; pi_chan_order_in[i]; i++ )
+ {
+ if( !(i_channel_mask & pi_chan_order_in[i]) ) continue;
+
+ for( k = 0, l = 0; pi_chan_order_in[i] != pi_chan_order_out[k]; k++ )
+ {
+ if( i_channel_mask & pi_chan_order_out[k] ) l++;
+ }
+
+ pi_chan_table[j++] = l;
+ }
+
+ for( i = 0; i < i_channels; i++ )
+ {
+ if( pi_chan_table[i] != i ) b_chan_reorder = true;
+ }
+
+ return b_chan_reorder;
}
/*****************************************************************************
- * aout_DateSet : set the date of an audio_date_t
+ * aout_ChannelReorder :
*****************************************************************************/
-void aout_DateSet( audio_date_t * p_date, mtime_t new_date )
+void aout_ChannelReorder( uint8_t *p_buf, int i_buffer,
+ int i_channels, const int *pi_chan_table,
+ int i_bits_per_sample )
{
- p_date->date = new_date;
- p_date->i_remainder = 0;
+ uint8_t p_tmp[AOUT_CHAN_MAX * 4];
+ int i, j;
+
+ if( i_bits_per_sample == 8 )
+ {
+ for( i = 0; i < i_buffer / i_channels; i++ )
+ {
+ for( j = 0; j < i_channels; j++ )
+ {
+ p_tmp[pi_chan_table[j]] = p_buf[j];
+ }
+
+ memcpy( p_buf, p_tmp, i_channels );
+ p_buf += i_channels;
+ }
+ }
+ else if( i_bits_per_sample == 16 )
+ {
+ for( i = 0; i < i_buffer / i_channels / 2; i++ )
+ {
+ for( j = 0; j < i_channels; j++ )
+ {
+ p_tmp[2 * pi_chan_table[j]] = p_buf[2 * j];
+ p_tmp[2 * pi_chan_table[j] + 1] = p_buf[2 * j + 1];
+ }
+
+ memcpy( p_buf, p_tmp, 2 * i_channels );
+ p_buf += 2 * i_channels;
+ }
+ }
+ else if( i_bits_per_sample == 24 )
+ {
+ for( i = 0; i < i_buffer / i_channels / 3; i++ )
+ {
+ for( j = 0; j < i_channels; j++ )
+ {
+ p_tmp[3 * pi_chan_table[j]] = p_buf[3 * j];
+ p_tmp[3 * pi_chan_table[j] + 1] = p_buf[3 * j + 1];
+ p_tmp[3 * pi_chan_table[j] + 2] = p_buf[3 * j + 2];
+ }
+
+ memcpy( p_buf, p_tmp, 3 * i_channels );
+ p_buf += 3 * i_channels;
+ }
+ }
+ else if( i_bits_per_sample == 32 )
+ {
+ for( i = 0; i < i_buffer / i_channels / 4; i++ )
+ {
+ for( j = 0; j < i_channels; j++ )
+ {
+ p_tmp[4 * pi_chan_table[j]] = p_buf[4 * j];
+ p_tmp[4 * pi_chan_table[j] + 1] = p_buf[4 * j + 1];
+ p_tmp[4 * pi_chan_table[j] + 2] = p_buf[4 * j + 2];
+ p_tmp[4 * pi_chan_table[j] + 3] = p_buf[4 * j + 3];
+ }
+
+ memcpy( p_buf, p_tmp, 4 * i_channels );
+ p_buf += 4 * i_channels;
+ }
+ }
}
/*****************************************************************************
- * aout_DateMove : move forwards or backwards the date of an audio_date_t
+ * aout_ChannelExtract:
*****************************************************************************/
-void aout_DateMove( audio_date_t * p_date, mtime_t difference )
+static inline void ExtractChannel( uint8_t *pi_dst, int i_dst_channels,
+ const uint8_t *pi_src, int i_src_channels,
+ int i_sample_count,
+ const int *pi_selection, int i_bytes )
{
- p_date->date += difference;
+ for( int i = 0; i < i_sample_count; i++ )
+ {
+ for( int j = 0; j < i_dst_channels; j++ )
+ memcpy( &pi_dst[j * i_bytes], &pi_src[pi_selection[j] * i_bytes], i_bytes );
+ pi_dst += i_dst_channels * i_bytes;
+ pi_src += i_src_channels * i_bytes;
+ }
}
-/*****************************************************************************
- * aout_DateGet : get the date of an audio_date_t
- *****************************************************************************/
-mtime_t aout_DateGet( const audio_date_t * p_date )
+void aout_ChannelExtract( void *p_dst, int i_dst_channels,
+ const void *p_src, int i_src_channels,
+ int i_sample_count, const int *pi_selection, int i_bits_per_sample )
{
- return p_date->date;
+ /* It does not work in place */
+ assert( p_dst != p_src );
+
+ /* Force the compiler to inline for the specific cases so it can optimize */
+ if( i_bits_per_sample == 8 )
+ ExtractChannel( p_dst, i_dst_channels, p_src, i_src_channels, i_sample_count, pi_selection, 1 );
+ else if( i_bits_per_sample == 16 )
+ ExtractChannel( p_dst, i_dst_channels, p_src, i_src_channels, i_sample_count, pi_selection, 2 );
+ else if( i_bits_per_sample == 24 )
+ ExtractChannel( p_dst, i_dst_channels, p_src, i_src_channels, i_sample_count, pi_selection, 3 );
+ else if( i_bits_per_sample == 32 )
+ ExtractChannel( p_dst, i_dst_channels, p_src, i_src_channels, i_sample_count, pi_selection, 4 );
+ else if( i_bits_per_sample == 64 )
+ ExtractChannel( p_dst, i_dst_channels, p_src, i_src_channels, i_sample_count, pi_selection, 8 );
+}
+
+bool aout_CheckChannelExtraction( int *pi_selection,
+ uint32_t *pi_layout, int *pi_channels,
+ const uint32_t pi_order_dst[AOUT_CHAN_MAX],
+ const uint32_t *pi_order_src, int i_channels )
+{
+ const uint32_t pi_order_dual_mono[] = { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT };
+ uint32_t i_layout = 0;
+ int i_out = 0;
+ int pi_index[AOUT_CHAN_MAX];
+
+ /* */
+ if( !pi_order_dst )
+ pi_order_dst = pi_vlc_chan_order_wg4;
+
+ /* Detect special dual mono case */
+ if( i_channels == 2 &&
+ pi_order_src[0] == AOUT_CHAN_CENTER && pi_order_src[1] == AOUT_CHAN_CENTER )
+ {
+ i_layout |= AOUT_CHAN_DUALMONO;
+ pi_order_src = pi_order_dual_mono;
+ }
+
+ /* */
+ for( int i = 0; i < i_channels; i++ )
+ {
+ /* Ignore unknown or duplicated channels or not present in output */
+ if( !pi_order_src[i] || (i_layout & pi_order_src[i]) )
+ continue;
+
+ for( int j = 0; j < AOUT_CHAN_MAX; j++ )
+ {
+ if( pi_order_dst[j] == pi_order_src[i] )
+ {
+ assert( i_out < AOUT_CHAN_MAX );
+ pi_index[i_out++] = i;
+ i_layout |= pi_order_src[i];
+ break;
+ }
+ }
+ }
+
+ /* */
+ for( int i = 0, j = 0; i < AOUT_CHAN_MAX; i++ )
+ {
+ for( int k = 0; k < i_out; k++ )
+ {
+ if( pi_order_dst[i] == pi_order_src[pi_index[k]] )
+ {
+ pi_selection[j++] = pi_index[k];
+ break;
+ }
+ }
+ }
+
+ *pi_layout = i_layout;
+ *pi_channels = i_out;
+
+ for( int i = 0; i < i_out; i++ )
+ {
+ if( pi_selection[i] != i )
+ return true;
+ }
+ return i_out == i_channels;
}
/*****************************************************************************
- * aout_DateIncrement : increment the date and return the result, taking
- * into account rounding errors
+ * aout_BufferAlloc:
*****************************************************************************/
-mtime_t aout_DateIncrement( audio_date_t * p_date, uint32_t i_nb_samples )
+
+aout_buffer_t *aout_BufferAlloc(aout_alloc_t *allocation, mtime_t microseconds,
+ aout_buffer_t *old_buffer)
{
- mtime_t i_dividend = (mtime_t)i_nb_samples * 1000000;
- p_date->date += i_dividend / p_date->i_divider;
- p_date->i_remainder += (int)(i_dividend % p_date->i_divider);
- if ( p_date->i_remainder >= p_date->i_divider )
+ if ( !allocation->b_alloc )
{
- /* This is Bresenham algorithm. */
- p_date->date++;
- p_date->i_remainder -= p_date->i_divider;
+ return old_buffer;
}
- return p_date->date;
+
+ size_t i_alloc_size = (int)( (uint64_t)allocation->i_bytes_per_sec
+ * (microseconds) / 1000000 + 1 );
+
+ return block_Alloc( i_alloc_size );
}
+
+/* This function will add or remove a a module from a string list (colon
+ * separated). It will return true if there is a modification
+ * In case p_aout is NULL, we will use configuration instead of variable */
+bool aout_ChangeFilterString( vlc_object_t *p_obj, aout_instance_t *p_aout,
+ const char *psz_variable,
+ const char *psz_name, bool b_add )
+{
+ char *psz_val;
+ char *psz_parser;
+
+ if( *psz_name == '\0' )
+ return false;
+
+ if( p_aout )
+ psz_val = var_GetString( p_aout, psz_variable );
+ else
+ {
+ psz_val = var_CreateGetString( p_obj->p_libvlc, psz_variable );
+ var_Destroy( p_obj->p_libvlc, psz_variable );
+ }
+
+ if( !psz_val )
+ psz_val = strdup( "" );
+
+ psz_parser = strstr( psz_val, psz_name );
+
+ if( ( b_add && psz_parser ) || ( !b_add && !psz_parser ) )
+ {
+ /* Nothing to do */
+ free( psz_val );
+ return false;
+ }
+
+ if( b_add )
+ {
+ char *psz_old = psz_val;
+ if( *psz_old )
+ {
+ if( asprintf( &psz_val, "%s:%s", psz_old, psz_name ) == -1 )
+ psz_val = NULL;
+ }
+ else
+ psz_val = strdup( psz_name );
+ free( psz_old );
+ }
+ else
+ {
+ const int i_name = strlen( psz_name );
+ const char *psz_next;
+
+ psz_next = &psz_parser[i_name];
+ if( *psz_next == ':' )
+ psz_next++;
+
+ memmove( psz_parser, psz_next, strlen(psz_next)+1 );
+ }
+
+ if( p_aout )
+ var_SetString( p_aout, psz_variable, psz_val );
+ else
+ config_PutPsz( p_obj, psz_variable, psz_val );
+ free( psz_val );
+ return true;
+}
projects / vlc / blobdiff