/*****************************************************************************
- * audio_output.c : audio output thread
+ * audio_output.c : audio output instance miscellaneous functions
*****************************************************************************
- * Copyright (C) 1999, 2000 VideoLAN
+ * Copyright (C) 2002 VideoLAN
+ * $Id: audio_output.c,v 1.102 2002/09/16 20:46:38 massiot Exp $
*
- * Authors:
+ * Authors: Christophe Massiot <massiot@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.
+ * 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 02111-1307, USA.
+ * 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.
*****************************************************************************/
-/* TODO:
- *
- * - Passer un certain nombre de "fonctions" (genre add_samples) en macro ou
- * inline
- * - Faire les optimisations dans les fonctions threads :
- * = Stocker les "petits calculs" dans des variables au lieu de les refaire
- * à chaque boucle
- * = Utiliser des tables pour les gros calculs
- * - Faire une structure différente pour intf/adec fifo
- *
- */
-
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include "defs.h"
-
-#include <unistd.h> /* getpid() */
-
-#include <stdio.h> /* "intf_msg.h" */
#include <stdlib.h> /* calloc(), malloc(), free() */
+#include <string.h>
-#include "config.h"
-#include "common.h"
-#include "threads.h"
-#include "mtime.h" /* mtime_t, mdate(), msleep() */
-#include "plugins.h"
+#include <vlc/vlc.h>
-#include "intf_msg.h" /* intf_DbgMsg(), intf_ErrMsg() */
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
#include "audio_output.h"
-#include "main.h"
-
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-
-static int aout_SpawnThread( aout_thread_t * p_aout );
+#include "aout_internal.h"
-/* Creating as much aout_Thread functions as configurations is one solution,
- * examining the different cases in the Thread loop of an unique function is
- * another. I chose the first solution. */
-void aout_Thread_S8_Mono ( aout_thread_t * p_aout );
-void aout_Thread_U8_Mono ( aout_thread_t * p_aout );
-void aout_Thread_S16_Mono ( aout_thread_t * p_aout );
-void aout_Thread_U16_Mono ( aout_thread_t * p_aout );
-void aout_Thread_S8_Stereo ( aout_thread_t * p_aout );
-void aout_Thread_U8_Stereo ( aout_thread_t * p_aout );
-void aout_Thread_S16_Stereo ( aout_thread_t * p_aout );
-void aout_Thread_U16_Stereo ( aout_thread_t * p_aout );
-
-static __inline__ void InitializeIncrement( aout_increment_t * p_increment, long l_numerator, long l_denominator );
-static __inline__ int NextFrame( aout_thread_t * p_aout, aout_fifo_t * p_fifo, mtime_t aout_date );
+/*
+ * Instances management (see also input.c:aout_InputNew())
+ */
/*****************************************************************************
- * aout_CreateThread: initialize audio thread
+ * aout_NewInstance: initialize aout structure
*****************************************************************************/
-aout_thread_t *aout_CreateThread( int *pi_status )
+aout_instance_t * __aout_NewInstance( vlc_object_t * p_parent )
{
- aout_thread_t * p_aout; /* thread descriptor */
- char * psz_method;
-#if 0
- int i_status; /* thread status */
-#endif
+ aout_instance_t * p_aout;
- /* Allocate descriptor */
- p_aout = (aout_thread_t *) malloc( sizeof(aout_thread_t) );
+ /* Allocate descriptor. */
+ p_aout = vlc_object_create( p_parent, VLC_OBJECT_AOUT );
if( p_aout == NULL )
{
- return( NULL );
- }
-
- /* Request an interface plugin */
- psz_method = main_GetPszVariable( AOUT_METHOD_VAR, AOUT_DEFAULT_METHOD );
-
- if( RequestPlugin( &p_aout->aout_plugin, "aout", psz_method ) )
- {
- intf_ErrMsg( "error: could not open audio plugin aout_%s.so\n", psz_method );
- free( p_aout );
- return( NULL );
+ return NULL;
}
- /* Get plugins */
- p_aout->p_sys_open = GetPluginFunction( p_aout->aout_plugin, "aout_SysOpen" );
- p_aout->p_sys_reset = GetPluginFunction( p_aout->aout_plugin, "aout_SysReset" );
- p_aout->p_sys_setformat = GetPluginFunction( p_aout->aout_plugin, "aout_SysSetFormat" );
- p_aout->p_sys_setchannels = GetPluginFunction( p_aout->aout_plugin, "aout_SysSetChannels" );
- p_aout->p_sys_setrate = GetPluginFunction( p_aout->aout_plugin, "aout_SysSetRate" );
- p_aout->p_sys_getbufinfo = GetPluginFunction( p_aout->aout_plugin, "aout_SysGetBufInfo" );
- p_aout->p_sys_playsamples = GetPluginFunction( p_aout->aout_plugin, "aout_SysPlaySamples" );
- p_aout->p_sys_close = GetPluginFunction( p_aout->aout_plugin, "aout_SysClose" );
-
- /*
- * Initialize audio device
- */
- if ( p_aout->p_sys_open( p_aout ) )
- {
- TrashPlugin( p_aout->aout_plugin );
- free( p_aout );
- 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 );
+ p_aout->i_nb_inputs = 0;
+ p_aout->mixer.f_multiplier = 1.0;
- p_aout->b_stereo = ( p_aout->i_channels == 2 ) ? 1 : 0; /* FIXME: only works
- for i_channels == 1 or 2 ??*/
+ vlc_object_attach( p_aout, p_parent->p_vlc );
- if ( p_aout->p_sys_reset( p_aout ) )
- {
- p_aout->p_sys_close( p_aout );
- TrashPlugin( p_aout->aout_plugin );
- free( p_aout );
- return( NULL );
- }
- if ( p_aout->p_sys_setformat( p_aout ) )
- {
- p_aout->p_sys_close( p_aout );
- TrashPlugin( p_aout->aout_plugin );
- free( p_aout );
- return( NULL );
- }
- if ( p_aout->p_sys_setchannels( p_aout ) )
- {
- p_aout->p_sys_close( p_aout );
- TrashPlugin( p_aout->aout_plugin );
- free( p_aout );
- return( NULL );
- }
- if ( p_aout->p_sys_setrate( p_aout ) )
- {
- p_aout->p_sys_close( p_aout );
- TrashPlugin( p_aout->aout_plugin );
- free( p_aout );
- return( NULL );
- }
-
- /* FIXME: maybe it would be cleaner to change SpawnThread prototype
- * see vout to handle status correctly ?? however, it is not critical since
- * this thread is only called in main and all calls are blocking */
- if( aout_SpawnThread( p_aout ) )
- {
- p_aout->p_sys_close( p_aout );
- TrashPlugin( p_aout->aout_plugin );
- free( p_aout );
- return( NULL );
- }
-
- return( p_aout );
+ return p_aout;
}
/*****************************************************************************
- * aout_SpawnThread
+ * aout_DeleteInstance: destroy aout structure
*****************************************************************************/
-static int aout_SpawnThread( aout_thread_t * p_aout )
+void aout_DeleteInstance( aout_instance_t * p_aout )
{
- int i_fifo;
- long l_bytes;
- void * aout_thread = NULL;
-
- intf_DbgMsg("aout debug: spawning audio output thread (%p)\n", p_aout);
-
- /* We want the audio output thread to live */
- p_aout->b_die = 0;
-
- /* Initialize the fifos lock */
- vlc_mutex_init( &p_aout->fifos_lock );
- /* Initialize audio fifos : set all fifos as empty and initialize locks */
- for ( i_fifo = 0; i_fifo < AOUT_MAX_FIFOS; i_fifo++ )
- {
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO;
- vlc_mutex_init( &p_aout->fifo[i_fifo].data_lock );
- vlc_cond_init( &p_aout->fifo[i_fifo].data_wait );
- }
-
- /* Compute the size (in audio units) of the audio output buffer. Although
- * AOUT_BUFFER_DURATION is given in microseconds, the output rate is given
- * in Hz, that's why we need to divide by 10^6 microseconds (1 second) */
- p_aout->l_units = (long)( ((s64)p_aout->l_rate * AOUT_BUFFER_DURATION) / 1000000 );
- p_aout->l_msleep = (long)( ((s64)p_aout->l_units * 1000000) / (s64)p_aout->l_rate );
-
- /* Make aout_thread point to the right thread function, and compute the
- * byte size of the audio output buffer */
- switch ( p_aout->i_channels )
- {
- /* Audio output is mono */
- case 1:
- switch ( p_aout->i_format )
- {
- case AOUT_FMT_U8:
- l_bytes = 1 * sizeof(u8) * p_aout->l_units;
- aout_thread = (void *)aout_Thread_U8_Mono;
- break;
-
- case AOUT_FMT_S8:
- l_bytes = 1 * sizeof(s8) * p_aout->l_units;
- aout_thread = (void *)aout_Thread_S8_Mono;
- break;
-
- case AOUT_FMT_U16_LE:
- case AOUT_FMT_U16_BE:
- l_bytes = 1 * sizeof(u16) * p_aout->l_units;
- aout_thread = (void *)aout_Thread_U16_Mono;
- break;
-
- case AOUT_FMT_S16_LE:
- case AOUT_FMT_S16_BE:
- l_bytes = 1 * sizeof(s16) * p_aout->l_units;
- aout_thread = (void *)aout_Thread_S16_Mono;
- break;
-
- default:
- intf_ErrMsg( "aout error: unknown audio output format (%i)\n",
- p_aout->i_format );
- return( -1 );
- }
- break;
-
- /* Audio output is stereo */
- case 2:
- switch ( p_aout->i_format )
- {
- case AOUT_FMT_U8:
- l_bytes = 2 * sizeof(u8) * p_aout->l_units;
- aout_thread = (void *)aout_Thread_U8_Stereo;
- break;
+ vlc_mutex_destroy( &p_aout->input_fifos_lock );
+ vlc_mutex_destroy( &p_aout->mixer_lock );
+ vlc_mutex_destroy( &p_aout->output_fifo_lock );
- case AOUT_FMT_S8:
- l_bytes = 2 * sizeof(s8) * p_aout->l_units;
- aout_thread = (void *)aout_Thread_S8_Stereo;
- break;
+ /* Free structure. */
+ vlc_object_destroy( p_aout );
+}
- case AOUT_FMT_U16_LE:
- case AOUT_FMT_U16_BE:
- l_bytes = 2 * sizeof(u16) * p_aout->l_units;
- aout_thread = (void *)aout_Thread_U16_Stereo;
- break;
- case AOUT_FMT_S16_LE:
- case AOUT_FMT_S16_BE:
- l_bytes = 2 * sizeof(s16) * p_aout->l_units;
- aout_thread = (void *)aout_Thread_S16_Stereo;
- break;
+/*
+ * Buffer management (interface to the decoders)
+ */
- default:
- intf_ErrMsg("aout error: unknown audio output format (%i)\n",
- p_aout->i_format);
- return( -1 );
- }
- break;
+/*****************************************************************************
+ * aout_BufferNew : ask for a new empty buffer
+ *****************************************************************************/
+aout_buffer_t * aout_BufferNew( aout_instance_t * p_aout,
+ aout_input_t * p_input,
+ size_t i_nb_samples )
+{
+ aout_buffer_t * p_buffer;
+ mtime_t duration = (1000000 * (mtime_t)i_nb_samples)
+ / p_input->input.i_rate;
- default:
- intf_ErrMsg("aout error: unknown number of audio channels (%i)\n",
- p_aout->i_channels );
- return( -1 );
- }
+ /* This necessarily allocates in the heap. */
+ aout_BufferAlloc( &p_input->input_alloc, duration, NULL, p_buffer );
+ p_buffer->i_nb_samples = i_nb_samples;
+ p_buffer->i_nb_bytes = i_nb_samples * p_input->input.i_bytes_per_frame
+ / p_input->input.i_frame_length;
- /* Allocate the memory needed by the audio output buffers, and set to zero
- * the s32 buffer's memory */
- if ( (p_aout->buffer = malloc(l_bytes)) == NULL )
+ if ( p_buffer == NULL )
{
- intf_ErrMsg("aout error: not enough memory to create the output buffer\n");
- return( -1 );
+ msg_Err( p_aout, "NULL buffer !" );
}
- if ( (p_aout->s32_buffer = (s32 *)calloc(p_aout->l_units, sizeof(s32) << ( p_aout->b_stereo))) == NULL )
+ else
{
- intf_ErrMsg("aout error: not enough memory to create the s32 output buffer\n");
- free( p_aout->buffer );
- return( -1 );
+ p_buffer->start_date = p_buffer->end_date = 0;
}
- /* Before launching the thread, we try to predict the date of the first
- * audio unit in the first output buffer */
- p_aout->date = mdate() - 1000000;
-
- /* Launch the thread */
- if ( vlc_thread_create( &p_aout->thread_id, "audio output", (vlc_thread_func_t)aout_thread, p_aout ) )
- {
- intf_ErrMsg("aout error: can't spawn audio output thread (%p)\n", p_aout);
- free( p_aout->buffer );
- free( p_aout->s32_buffer );
- return( -1 );
- }
-
- intf_DbgMsg("aout debug: audio output thread (%p) spawned\n", p_aout);
- return( 0 );
+ return p_buffer;
}
/*****************************************************************************
- * aout_DestroyThread
+ * aout_BufferDelete : destroy an undecoded buffer
*****************************************************************************/
-void aout_DestroyThread( aout_thread_t * p_aout, int *pi_status )
+void aout_BufferDelete( aout_instance_t * p_aout, aout_input_t * p_input,
+ aout_buffer_t * p_buffer )
{
- /* FIXME: pi_status is not handled correctly: check vout how to do!?? */
-
- intf_DbgMsg("aout debug: requesting termination of audio output thread (%p)\n", p_aout);
-
- /* Ask thread to kill itself and wait until it's done */
- p_aout->b_die = 1;
- vlc_thread_join( p_aout->thread_id ); /* only if pi_status is NULL */
-
- /* Free the allocated memory */
- free( p_aout->buffer );
- free( p_aout->s32_buffer );
-
- /* Free the structure */
- p_aout->p_sys_close( p_aout );
- intf_DbgMsg("aout debug: audio device (%s) closed\n", p_aout->psz_device);
-
- /* Close plugin */
- TrashPlugin( p_aout->aout_plugin );
-
- /* Free structure */
- free( p_aout );
+ aout_BufferFree( p_buffer );
}
/*****************************************************************************
- * aout_CreateFifo
+ * aout_BufferPlay : filter & mix the decoded buffer
*****************************************************************************/
-aout_fifo_t * aout_CreateFifo( aout_thread_t * p_aout, aout_fifo_t * p_fifo )
+void aout_BufferPlay( aout_instance_t * p_aout, aout_input_t * p_input,
+ aout_buffer_t * p_buffer )
{
- int i_fifo;
-
- /* Take the fifos lock */
- vlc_mutex_lock( &p_aout->fifos_lock );
-
- /* Looking for a free fifo structure */
- for ( i_fifo = 0; i_fifo < AOUT_MAX_FIFOS; i_fifo++ )
+ if ( p_buffer->start_date == 0 )
{
- if ( p_aout->fifo[i_fifo].i_type == AOUT_EMPTY_FIFO)
- {
- break;
- }
+ msg_Warn( p_aout, "non-dated buffer received" );
+ aout_BufferFree( p_buffer );
}
- if ( i_fifo == AOUT_MAX_FIFOS )
+ else
{
- intf_ErrMsg("aout error: no empty fifo available\n");
- vlc_mutex_unlock( &p_aout->fifos_lock );
- return( NULL );
+ p_buffer->end_date = p_buffer->start_date
+ + (mtime_t)(p_buffer->i_nb_samples * 1000000)
+ / p_input->input.i_rate;
}
- /* Initialize the new fifo structure */
- switch ( p_aout->fifo[i_fifo].i_type = p_fifo->i_type )
- {
- case AOUT_INTF_MONO_FIFO:
- case AOUT_INTF_STEREO_FIFO:
- p_aout->fifo[i_fifo].b_die = 0;
-
- p_aout->fifo[i_fifo].i_channels = p_fifo->i_channels;
- p_aout->fifo[i_fifo].b_stereo = p_fifo->b_stereo;
- p_aout->fifo[i_fifo].l_rate = p_fifo->l_rate;
-
- p_aout->fifo[i_fifo].buffer = p_fifo->buffer;
-
- p_aout->fifo[i_fifo].l_unit = 0;
- InitializeIncrement( &p_aout->fifo[i_fifo].unit_increment, p_fifo->l_rate, p_aout->l_rate );
- p_aout->fifo[i_fifo].l_units = p_fifo->l_units;
- break;
-
- case AOUT_ADEC_MONO_FIFO:
- case AOUT_ADEC_STEREO_FIFO:
- p_aout->fifo[i_fifo].b_die = 0;
+ /* If the buffer is too early, wait a while. */
+ mwait( p_buffer->start_date - AOUT_MAX_PREPARE_TIME );
- p_aout->fifo[i_fifo].i_channels = p_fifo->i_channels;
- p_aout->fifo[i_fifo].b_stereo = p_fifo->b_stereo;
- p_aout->fifo[i_fifo].l_rate = p_fifo->l_rate;
+ aout_InputPlay( p_aout, p_input, p_buffer );
- p_aout->fifo[i_fifo].l_frame_size = p_fifo->l_frame_size;
- /* Allocate the memory needed to store the audio frames. As the
- * fifo is a rotative fifo, we must be able to find out whether the
- * fifo is full or empty, that's why we must in fact allocate memory
- * for (AOUT_FIFO_SIZE+1) audio frames. */
- if ( (p_aout->fifo[i_fifo].buffer = malloc( sizeof(s16)*(AOUT_FIFO_SIZE+1)*p_fifo->l_frame_size )) == NULL )
- {
- intf_ErrMsg("aout error: not enough memory to create the frames buffer\n");
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO;
- vlc_mutex_unlock( &p_aout->fifos_lock );
- return( NULL );
- }
+ /* Run the mixer if it is able to run. */
+ aout_MixerRun( p_aout );
+}
- /* Allocate the memory needed to store the dates of the frames */
- if ( (p_aout->fifo[i_fifo].date = (mtime_t *)malloc( sizeof(mtime_t)*(AOUT_FIFO_SIZE+1) )) == NULL )
- {
- intf_ErrMsg("aout error: not enough memory to create the dates buffer\n");
- free( p_aout->fifo[i_fifo].buffer );
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO;
- vlc_mutex_unlock( &p_aout->fifos_lock );
- return( NULL );
- }
- /* Set the fifo's buffer as empty (the first frame that is to be
- * played is also the first frame that is not to be played) */
- p_aout->fifo[i_fifo].l_start_frame = 0;
- /* p_aout->fifo[i_fifo].l_next_frame = 0; */
- p_aout->fifo[i_fifo].l_end_frame = 0;
+/*
+ * Formats management
+ */
- /* Waiting for the audio decoder to compute enough frames to work
- * out the fifo's current rate (as soon as the decoder has decoded
- * enough frames, the members of the fifo structure that are not
- * initialized now will be calculated) */
- p_aout->fifo[i_fifo].b_start_frame = 0;
- p_aout->fifo[i_fifo].b_next_frame = 0;
- break;
+/*****************************************************************************
+ * aout_FormatNbChannels : return the number of channels
+ *****************************************************************************/
+int aout_FormatNbChannels( audio_sample_format_t * p_format )
+{
+ int i_nb;
- default:
- intf_ErrMsg("aout error: unknown fifo type (%i)\n", p_aout->fifo[i_fifo].i_type);
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO;
- vlc_mutex_unlock( &p_aout->fifos_lock );
- return( NULL );
+ switch ( p_format->i_channels & AOUT_CHAN_MASK )
+ {
+ case AOUT_CHAN_CHANNEL1:
+ case AOUT_CHAN_CHANNEL2:
+ case AOUT_CHAN_MONO:
+ i_nb = 1;
+ break;
+
+ case AOUT_CHAN_CHANNEL:
+ case AOUT_CHAN_STEREO:
+ case AOUT_CHAN_DOLBY:
+ i_nb = 2;
+ break;
+
+ case AOUT_CHAN_3F:
+ case AOUT_CHAN_2F1R:
+ i_nb = 3;
+ break;
+
+ case AOUT_CHAN_3F1R:
+ case AOUT_CHAN_2F2R:
+ i_nb = 4;
+ break;
+
+ case AOUT_CHAN_3F2R:
+ i_nb = 5;
+ break;
+
+ default:
+ i_nb = 0;
}
- /* Release the fifos lock */
- vlc_mutex_unlock( &p_aout->fifos_lock );
-
- /* Return the pointer to the fifo structure */
- intf_DbgMsg("aout debug: audio output fifo (%p) allocated\n", &p_aout->fifo[i_fifo]);
- return( &p_aout->fifo[i_fifo] );
+ if ( p_format->i_channels & AOUT_CHAN_LFE )
+ return i_nb + 1;
+ else
+ return i_nb;
}
/*****************************************************************************
- * aout_DestroyFifo
+ * aout_FormatPrepare : compute the number of bytes per frame & frame length
*****************************************************************************/
-void aout_DestroyFifo( aout_fifo_t * p_fifo )
+void aout_FormatPrepare( audio_sample_format_t * p_format )
{
- intf_DbgMsg("aout debug: requesting destruction of audio output fifo (%p)\n", p_fifo);
- p_fifo->b_die = 1;
-}
-
-/* Here are the local macros */
+ int i_result;
-#define UPDATE_INCREMENT( increment, integer ) \
- if ( ((increment).l_remainder += (increment).l_euclidean_remainder) >= 0 )\
- { \
- (integer) += (increment).l_euclidean_integer + 1; \
- (increment).l_remainder -= (increment).l_euclidean_denominator; \
- } \
- else \
- { \
- (integer) += (increment).l_euclidean_integer; \
+ switch ( p_format->i_format )
+ {
+ case AOUT_FMT_U8:
+ case AOUT_FMT_S8:
+ i_result = 1;
+ break;
+
+ case AOUT_FMT_U16_LE:
+ case AOUT_FMT_U16_BE:
+ case AOUT_FMT_S16_LE:
+ case AOUT_FMT_S16_BE:
+ i_result = 2;
+ break;
+
+ case AOUT_FMT_FLOAT32:
+ case AOUT_FMT_FIXED32:
+ i_result = 4;
+ break;
+
+ case AOUT_FMT_SPDIF:
+ case AOUT_FMT_A52:
+ case AOUT_FMT_DTS:
+ /* For these formats the caller has to indicate the parameters
+ * by hand. */
+ return;
+
+ default:
+ i_result = 0; /* will segfault much sooner... */
}
-/* Following functions are local */
+ p_format->i_bytes_per_frame = i_result * aout_FormatNbChannels( p_format );
+ p_format->i_frame_length = 1;
+}
+
+
+/*
+ * FIFO management (internal) - please understand that solving race conditions
+ * is _your_ job, ie. in the audio output you should own the mixer lock
+ * before calling any of these functions.
+ */
/*****************************************************************************
- * InitializeIncrement
+ * aout_FifoInit : initialize the members of a FIFO
*****************************************************************************/
-static __inline__ void InitializeIncrement( aout_increment_t * p_increment, long l_numerator, long l_denominator )
+void aout_FifoInit( aout_instance_t * p_aout, aout_fifo_t * p_fifo,
+ u32 i_rate )
{
- p_increment->l_remainder = -l_denominator;
+ p_fifo->p_first = NULL;
+ p_fifo->pp_last = &p_fifo->p_first;
+ aout_DateInit( &p_fifo->end_date, i_rate );
+}
- p_increment->l_euclidean_integer = 0;
- while ( l_numerator >= l_denominator )
+/*****************************************************************************
+ * aout_FifoPush : push a packet into the FIFO
+ *****************************************************************************/
+void aout_FifoPush( aout_instance_t * p_aout, aout_fifo_t * p_fifo,
+ aout_buffer_t * p_buffer )
+{
+ *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 ) )
{
- p_increment->l_euclidean_integer++;
- l_numerator -= l_denominator;
+ 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 );
+ }
+ else
+ {
+ aout_DateSet( &p_fifo->end_date, p_buffer->end_date );
}
-
- p_increment->l_euclidean_remainder = l_numerator;
-
- p_increment->l_euclidean_denominator = l_denominator;
}
/*****************************************************************************
- * NextFrame
+ * aout_FifoSet : set end_date and trash all buffers (because they aren't
+ * properly dated)
*****************************************************************************/
-static __inline__ int NextFrame( aout_thread_t * p_aout, aout_fifo_t * p_fifo, mtime_t aout_date )
+void aout_FifoSet( aout_instance_t * p_aout, aout_fifo_t * p_fifo,
+ mtime_t date )
{
- long l_units, l_rate;
-
- /* We take the lock */
- vlc_mutex_lock( &p_fifo->data_lock );
+ aout_buffer_t * p_buffer;
- /* Are we looking for a dated start frame ? */
- if ( !p_fifo->b_start_frame )
+ aout_DateSet( &p_fifo->end_date, date );
+ p_buffer = p_fifo->p_first;
+ while ( p_buffer != NULL )
{
- while ( p_fifo->l_start_frame != p_fifo->l_end_frame )
- {
- if ( p_fifo->date[p_fifo->l_start_frame] != LAST_MDATE )
- {
- p_fifo->b_start_frame = 1;
- p_fifo->l_next_frame = (p_fifo->l_start_frame + 1) & AOUT_FIFO_SIZE;
- p_fifo->l_unit = p_fifo->l_start_frame * (p_fifo->l_frame_size >> (p_fifo->b_stereo));
- break;
- }
- p_fifo->l_start_frame = (p_fifo->l_start_frame + 1) & AOUT_FIFO_SIZE;
- }
-
- if ( p_fifo->l_start_frame == p_fifo->l_end_frame )
- {
- vlc_mutex_unlock( &p_fifo->data_lock );
- return( -1 );
- }
+ aout_buffer_t * p_next = p_buffer->p_next;
+ aout_BufferFree( p_buffer );
+ p_buffer = p_next;
}
+ p_fifo->p_first = NULL;
+ p_fifo->pp_last = &p_fifo->p_first;
+}
- /* We are looking for the next dated frame */
- /* FIXME : is the output fifo full ?? */
- while ( !p_fifo->b_next_frame )
- {
- while ( p_fifo->l_next_frame != p_fifo->l_end_frame )
- {
- if ( p_fifo->date[p_fifo->l_next_frame] != LAST_MDATE )
- {
- p_fifo->b_next_frame = 1;
- break;
- }
- p_fifo->l_next_frame = (p_fifo->l_next_frame + 1) & AOUT_FIFO_SIZE;
- }
+/*****************************************************************************
+ * aout_FifoMoveDates : Move forwards or backwards all dates in the FIFO
+ *****************************************************************************/
+void aout_FifoMoveDates( aout_instance_t * p_aout, aout_fifo_t * p_fifo,
+ mtime_t difference )
+{
+ aout_buffer_t * p_buffer;
- while ( p_fifo->l_next_frame == p_fifo->l_end_frame )
- {
- vlc_cond_wait( &p_fifo->data_wait, &p_fifo->data_lock );
- if ( p_fifo->b_die )
- {
- vlc_mutex_unlock( &p_fifo->data_lock );
- return( -1 );
- }
- }
+ aout_DateMove( &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 = p_buffer->p_next;
}
-
- l_units = ((p_fifo->l_next_frame - p_fifo->l_start_frame) & AOUT_FIFO_SIZE) * (p_fifo->l_frame_size >> (p_fifo->b_stereo));
-
- l_rate = p_fifo->l_rate + ((aout_date - p_fifo->date[p_fifo->l_start_frame]) / 256);
-// fprintf( stderr, "aout debug: %lli (%li);\n", aout_date - p_fifo->date[p_fifo->l_start_frame], l_rate );
-
- InitializeIncrement( &p_fifo->unit_increment, l_rate, p_aout->l_rate );
-
- p_fifo->l_units = (((l_units - (p_fifo->l_unit -
- (p_fifo->l_start_frame * (p_fifo->l_frame_size >> (p_fifo->b_stereo)))))
- * p_aout->l_rate) / l_rate) + 1;
-
- /* We release the lock before leaving */
- vlc_mutex_unlock( &p_fifo->data_lock );
- return( 0 );
}
-void aout_Thread_S8_Mono( aout_thread_t * p_aout )
+/*****************************************************************************
+ * aout_FifoNextStart : return the current end_date
+ *****************************************************************************/
+mtime_t aout_FifoNextStart( aout_instance_t * p_aout, aout_fifo_t * p_fifo )
{
+ return aout_DateGet( &p_fifo->end_date );
}
-void aout_Thread_S8_Stereo( aout_thread_t * p_aout )
+/*****************************************************************************
+ * aout_FifoPop : get the next buffer out of the FIFO
+ *****************************************************************************/
+aout_buffer_t * aout_FifoPop( aout_instance_t * p_aout, aout_fifo_t * p_fifo )
{
-}
+ aout_buffer_t * p_buffer;
+ p_buffer = p_fifo->p_first;
+ if ( p_buffer == NULL ) return NULL;
+ p_fifo->p_first = p_buffer->p_next;
+ if ( p_fifo->p_first == NULL )
+ {
+ p_fifo->pp_last = &p_fifo->p_first;
+ }
-void aout_Thread_U8_Mono( aout_thread_t * p_aout )
-{
+ return p_buffer;
}
-void aout_Thread_U8_Stereo( aout_thread_t * p_aout )
+/*****************************************************************************
+ * aout_FifoDestroy : destroy a FIFO and its buffers
+ *****************************************************************************/
+void aout_FifoDestroy( aout_instance_t * p_aout, aout_fifo_t * p_fifo )
{
- int i_fifo;
- long l_buffer, l_buffer_limit;
- long l_units, l_bytes;
-
- intf_DbgMsg("adec debug: ********aout_Thread_U8_Stereo********\n");
- intf_DbgMsg("adec debug: running audio output thread (%p) (pid == %i)\n", p_aout, getpid());
+ aout_buffer_t * p_buffer;
- /* As the s32_buffer was created with calloc(), we don't have to set this
- * memory to zero and we can immediately jump into the thread's loop */
- while ( !p_aout->b_die )
+ p_buffer = p_fifo->p_first;
+ while ( p_buffer != NULL )
{
- vlc_mutex_lock( &p_aout->fifos_lock );
- for ( i_fifo = 0; i_fifo < AOUT_MAX_FIFOS; i_fifo++ )
- {
- switch ( p_aout->fifo[i_fifo].i_type )
- {
- case AOUT_EMPTY_FIFO:
- break;
-
- case AOUT_INTF_MONO_FIFO:
- if ( p_aout->fifo[i_fifo].l_units > p_aout->l_units )
- {
- l_buffer = 0;
- while ( l_buffer < (p_aout->l_units << 1) ) /* p_aout->b_stereo == 1 */
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- }
- p_aout->fifo[i_fifo].l_units -= p_aout->l_units;
- }
- else
- {
- l_buffer = 0;
- while ( l_buffer < (p_aout->fifo[i_fifo].l_units << 1) ) /* p_aout->b_stereo == 1 */
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- }
- free( p_aout->fifo[i_fifo].buffer ); /* !! */
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]); /* !! */
- }
- break;
-
- case AOUT_INTF_STEREO_FIFO:
- if ( p_aout->fifo[i_fifo].l_units > p_aout->l_units )
- {
- l_buffer = 0;
- while ( l_buffer < (p_aout->l_units << 1) ) /* p_aout->b_stereo == 1 */
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit+1] );
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- }
- p_aout->fifo[i_fifo].l_units -= p_aout->l_units;
- }
- else
- {
- l_buffer = 0;
- while ( l_buffer < (p_aout->fifo[i_fifo].l_units << 1) ) /* p_aout->b_stereo == 1 */
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit+1] );
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- }
- free( p_aout->fifo[i_fifo].buffer ); /* !! */
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]); /* !! */
- }
- break;
-
- case AOUT_ADEC_MONO_FIFO:
- if ( p_aout->fifo[i_fifo].b_die )
- {
- free( p_aout->fifo[i_fifo].buffer );
- free( p_aout->fifo[i_fifo].date );
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]);
- continue;
- }
-
- l_units = p_aout->l_units;
- l_buffer = 0;
- while ( l_units > 0 )
- {
- if ( !p_aout->fifo[i_fifo].b_next_frame )
- {
- if ( NextFrame(p_aout, &p_aout->fifo[i_fifo], p_aout->date + ((((mtime_t)(l_buffer >> 1)) * 1000000) / ((mtime_t)p_aout->l_rate))) )
- {
- break;
- }
- }
-
- if ( p_aout->fifo[i_fifo].l_units > l_units )
- {
- l_buffer_limit = p_aout->l_units << 1; /* p_aout->b_stereo == 1 */
- while ( l_buffer < l_buffer_limit )
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
-
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- if ( p_aout->fifo[i_fifo].l_unit >= /* p_aout->fifo[i_fifo].b_stereo == 0 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 0)) )
- {
- p_aout->fifo[i_fifo].l_unit -= /* p_aout->fifo[i_fifo].b_stereo == 0 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 0));
- }
- }
- p_aout->fifo[i_fifo].l_units -= l_units;
- break;
- }
- else
- {
- l_buffer_limit = l_buffer + (p_aout->fifo[i_fifo].l_units << 1);
- /* p_aout->b_stereo == 1 */
- while ( l_buffer < l_buffer_limit )
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
-
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- if ( p_aout->fifo[i_fifo].l_unit >= /* p_aout->fifo[i_fifo].b_stereo == 0 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 0)) )
- {
- p_aout->fifo[i_fifo].l_unit -= /* p_aout->fifo[i_fifo].b_stereo == 0 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 0));
- }
- }
- l_units -= p_aout->fifo[i_fifo].l_units;
-
- vlc_mutex_lock( &p_aout->fifo[i_fifo].data_lock );
- p_aout->fifo[i_fifo].l_start_frame = p_aout->fifo[i_fifo].l_next_frame;
- vlc_cond_signal( &p_aout->fifo[i_fifo].data_wait );
- vlc_mutex_unlock( &p_aout->fifo[i_fifo].data_lock );
-
- /* p_aout->fifo[i_fifo].b_start_frame = 1; */
- p_aout->fifo[i_fifo].l_next_frame += 1;
- p_aout->fifo[i_fifo].l_next_frame &= AOUT_FIFO_SIZE;
- p_aout->fifo[i_fifo].b_next_frame = 0;
- }
- }
- break;
-
- case AOUT_ADEC_STEREO_FIFO:
- if ( p_aout->fifo[i_fifo].b_die )
- {
- free( p_aout->fifo[i_fifo].buffer );
- free( p_aout->fifo[i_fifo].date );
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]);
- continue;
- }
-
- l_units = p_aout->l_units;
- l_buffer = 0;
- while ( l_units > 0 )
- {
- if ( !p_aout->fifo[i_fifo].b_next_frame )
- {
- if ( NextFrame(p_aout, &p_aout->fifo[i_fifo], p_aout->date + ((((mtime_t)(l_buffer >> 1)) * 1000000) / ((mtime_t)p_aout->l_rate))) )
- {
- break;
- }
- }
-
- if ( p_aout->fifo[i_fifo].l_units > l_units )
- {
- l_buffer_limit = p_aout->l_units << 1; /* p_aout->b_stereo == 1 */
- while ( l_buffer < l_buffer_limit )
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit+1] );
-
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- if ( p_aout->fifo[i_fifo].l_unit >= /* p_aout->fifo[i_fifo].b_stereo == 1 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 1)) )
- {
- p_aout->fifo[i_fifo].l_unit -= /* p_aout->fifo[i_fifo].b_stereo == 1 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 1));
- }
- }
- p_aout->fifo[i_fifo].l_units -= l_units;
- break;
- }
- else
- {
- l_buffer_limit = l_buffer + (p_aout->fifo[i_fifo].l_units << 1);
- /* p_aout->b_stereo == 1 */
- while ( l_buffer < l_buffer_limit )
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit+1] );
-
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- if ( p_aout->fifo[i_fifo].l_unit >= /* p_aout->fifo[i_fifo].b_stereo == 1 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 1)) )
- {
- p_aout->fifo[i_fifo].l_unit -= /* p_aout->fifo[i_fifo].b_stereo == 1 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 1));
- }
- }
- l_units -= p_aout->fifo[i_fifo].l_units;
-
- vlc_mutex_lock( &p_aout->fifo[i_fifo].data_lock );
- p_aout->fifo[i_fifo].l_start_frame = p_aout->fifo[i_fifo].l_next_frame;
- vlc_cond_signal( &p_aout->fifo[i_fifo].data_wait );
- vlc_mutex_unlock( &p_aout->fifo[i_fifo].data_lock );
-
- /* p_aout->fifo[i_fifo].b_start_frame = 1; */
- p_aout->fifo[i_fifo].l_next_frame += 1;
- p_aout->fifo[i_fifo].l_next_frame &= AOUT_FIFO_SIZE;
- p_aout->fifo[i_fifo].b_next_frame = 0;
- }
- }
- break;
-
- default:
- intf_DbgMsg("aout debug: unknown fifo type (%i)\n", p_aout->fifo[i_fifo].i_type);
- break;
- }
- }
- vlc_mutex_unlock( &p_aout->fifos_lock );
-
- l_buffer_limit = p_aout->l_units << 1 ; /* p_aout->b_stereo == 1 */
-
- for ( l_buffer = 0; l_buffer < l_buffer_limit; l_buffer++ )
- {
- ((u8 *)p_aout->buffer)[l_buffer] = (u8)( (p_aout->s32_buffer[l_buffer] / 256) + 128 );
- p_aout->s32_buffer[l_buffer] = 0;
- }
- l_bytes = p_aout->p_sys_getbufinfo( p_aout, l_buffer_limit );
- p_aout->date = mdate() + ((((mtime_t)(l_bytes / 2 )) * 1000000) / ((mtime_t)p_aout->l_rate)); /* sizeof(u8) << (p_aout->b_stereo) == 2 */
- p_aout->p_sys_playsamples( p_aout, (byte_t *)p_aout->buffer, l_buffer_limit * sizeof(u8) );
- if ( l_bytes > (l_buffer_limit * sizeof(u8)) )
- {
- msleep( p_aout->l_msleep );
- }
+ aout_buffer_t * p_next = p_buffer->p_next;
+ aout_BufferFree( p_buffer );
+ p_buffer = p_next;
}
+}
- vlc_mutex_lock( &p_aout->fifos_lock );
- for ( i_fifo = 0; i_fifo < AOUT_MAX_FIFOS; i_fifo++ )
- {
- switch ( p_aout->fifo[i_fifo].i_type )
- {
- case AOUT_EMPTY_FIFO:
- break;
-
- case AOUT_INTF_MONO_FIFO:
- case AOUT_INTF_STEREO_FIFO:
- free( p_aout->fifo[i_fifo].buffer ); /* !! */
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]);
- break;
-
- case AOUT_ADEC_MONO_FIFO:
- case AOUT_ADEC_STEREO_FIFO:
- free( p_aout->fifo[i_fifo].buffer );
- free( p_aout->fifo[i_fifo].date );
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]);
- break;
- default:
- break;
- }
- }
- vlc_mutex_unlock( &p_aout->fifos_lock );
+/*
+ * Date management (internal and external)
+ */
+/*****************************************************************************
+ * aout_DateInit : set the divider of an audio_date_t
+ *****************************************************************************/
+void aout_DateInit( audio_date_t * p_date, u32 i_divider )
+{
+ p_date->date = 0;
+ p_date->i_divider = i_divider;
+ p_date->i_remainder = 0;
}
-void aout_Thread_S16_Mono( aout_thread_t * p_aout )
+/*****************************************************************************
+ * aout_DateSet : set the date of an audio_date_t
+ *****************************************************************************/
+void aout_DateSet( audio_date_t * p_date, mtime_t new_date )
{
+ p_date->date = new_date;
+ p_date->i_remainder = 0;
}
-void aout_Thread_S16_Stereo( aout_thread_t * p_aout )
+/*****************************************************************************
+ * aout_DateMove : move forwards or backwards the date of an audio_date_t
+ *****************************************************************************/
+void aout_DateMove( audio_date_t * p_date, mtime_t difference )
{
- int i_fifo;
- long l_buffer, l_buffer_limit;
- long l_units, l_bytes;
-
- intf_DbgMsg("adec debug: ********aout_Thread_S16_Stereo********\n");
- intf_DbgMsg("adec debug: running audio output thread (%p) (pid == %i)\n", p_aout, getpid());
-
- /* As the s32_buffer was created with calloc(), we don't have to set this
- * memory to zero and we can immediately jump into the thread's loop */
- while ( !p_aout->b_die )
- {
- vlc_mutex_lock( &p_aout->fifos_lock );
- for ( i_fifo = 0; i_fifo < AOUT_MAX_FIFOS; i_fifo++ )
- {
- switch ( p_aout->fifo[i_fifo].i_type )
- {
- case AOUT_EMPTY_FIFO:
- break;
-
- case AOUT_INTF_MONO_FIFO:
- if ( p_aout->fifo[i_fifo].l_units > p_aout->l_units )
- {
- l_buffer = 0;
- while ( l_buffer < (p_aout->l_units << 1) ) /* p_aout->b_stereo == 1 */
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- }
- p_aout->fifo[i_fifo].l_units -= p_aout->l_units;
- }
- else
- {
- l_buffer = 0;
- while ( l_buffer < (p_aout->fifo[i_fifo].l_units << 1) ) /* p_aout->b_stereo == 1 */
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- }
- free( p_aout->fifo[i_fifo].buffer ); /* !! */
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]); /* !! */
- }
- break;
-
- case AOUT_INTF_STEREO_FIFO:
- if ( p_aout->fifo[i_fifo].l_units > p_aout->l_units )
- {
- l_buffer = 0;
- while ( l_buffer < (p_aout->l_units << 1) ) /* p_aout->b_stereo == 1 */
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit+1] );
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- }
- p_aout->fifo[i_fifo].l_units -= p_aout->l_units;
- }
- else
- {
- l_buffer = 0;
- while ( l_buffer < (p_aout->fifo[i_fifo].l_units << 1) ) /* p_aout->b_stereo == 1 */
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit+1] );
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- }
- free( p_aout->fifo[i_fifo].buffer ); /* !! */
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]); /* !! */
- }
- break;
-
- case AOUT_ADEC_MONO_FIFO:
- if ( p_aout->fifo[i_fifo].b_die )
- {
- free( p_aout->fifo[i_fifo].buffer );
- free( p_aout->fifo[i_fifo].date );
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]);
- continue;
- }
-
- l_units = p_aout->l_units;
- l_buffer = 0;
- while ( l_units > 0 )
- {
- if ( !p_aout->fifo[i_fifo].b_next_frame )
- {
- if ( NextFrame(p_aout, &p_aout->fifo[i_fifo], p_aout->date + ((((mtime_t)(l_buffer >> 1)) * 1000000) / ((mtime_t)p_aout->l_rate))) )
- {
- break;
- }
- }
-
- if ( p_aout->fifo[i_fifo].l_units > l_units )
- {
- l_buffer_limit = p_aout->l_units << 1; /* p_aout->b_stereo == 1 */
- while ( l_buffer < l_buffer_limit )
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
-
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- if ( p_aout->fifo[i_fifo].l_unit >= /* p_aout->fifo[i_fifo].b_stereo == 0 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 0)) )
- {
- p_aout->fifo[i_fifo].l_unit -= /* p_aout->fifo[i_fifo].b_stereo == 0 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 0));
- }
- }
- p_aout->fifo[i_fifo].l_units -= l_units;
- break;
- }
- else
- {
- l_buffer_limit = l_buffer + (p_aout->fifo[i_fifo].l_units << 1);
- /* p_aout->b_stereo == 1 */
- while ( l_buffer < l_buffer_limit )
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[p_aout->fifo[i_fifo].l_unit] );
-
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- if ( p_aout->fifo[i_fifo].l_unit >= /* p_aout->fifo[i_fifo].b_stereo == 0 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 0)) )
- {
- p_aout->fifo[i_fifo].l_unit -= /* p_aout->fifo[i_fifo].b_stereo == 0 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 0));
- }
- }
- l_units -= p_aout->fifo[i_fifo].l_units;
-
- vlc_mutex_lock( &p_aout->fifo[i_fifo].data_lock );
- p_aout->fifo[i_fifo].l_start_frame = p_aout->fifo[i_fifo].l_next_frame;
- vlc_cond_signal( &p_aout->fifo[i_fifo].data_wait );
- vlc_mutex_unlock( &p_aout->fifo[i_fifo].data_lock );
-
- /* p_aout->fifo[i_fifo].b_start_frame = 1; */
- p_aout->fifo[i_fifo].l_next_frame += 1;
- p_aout->fifo[i_fifo].l_next_frame &= AOUT_FIFO_SIZE;
- p_aout->fifo[i_fifo].b_next_frame = 0;
- }
- }
- break;
-
- case AOUT_ADEC_STEREO_FIFO:
- if ( p_aout->fifo[i_fifo].b_die )
- {
- free( p_aout->fifo[i_fifo].buffer );
- free( p_aout->fifo[i_fifo].date );
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]);
- continue;
- }
-
- l_units = p_aout->l_units;
- l_buffer = 0;
- while ( l_units > 0 )
- {
- if ( !p_aout->fifo[i_fifo].b_next_frame )
- {
- if ( NextFrame(p_aout, &p_aout->fifo[i_fifo], p_aout->date + ((((mtime_t)(l_buffer >> 1)) * 1000000) / ((mtime_t)p_aout->l_rate))) )
- {
- break;
- }
- }
-
- if ( p_aout->fifo[i_fifo].l_units > l_units )
- {
- l_buffer_limit = p_aout->l_units << 1; /* p_aout->b_stereo == 1 */
- while ( l_buffer < l_buffer_limit )
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit+1] );
-
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- if ( p_aout->fifo[i_fifo].l_unit >= /* p_aout->fifo[i_fifo].b_stereo == 1 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 1)) )
- {
- p_aout->fifo[i_fifo].l_unit -= /* p_aout->fifo[i_fifo].b_stereo == 1 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 1));
- }
- }
- p_aout->fifo[i_fifo].l_units -= l_units;
- break;
- }
- else
- {
- l_buffer_limit = l_buffer + (p_aout->fifo[i_fifo].l_units << 1);
- /* p_aout->b_stereo == 1 */
- while ( l_buffer < l_buffer_limit )
- {
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit] );
- p_aout->s32_buffer[l_buffer++] +=
- (s32)( ((s16 *)p_aout->fifo[i_fifo].buffer)[2*p_aout->fifo[i_fifo].l_unit+1] );
-
- UPDATE_INCREMENT( p_aout->fifo[i_fifo].unit_increment, p_aout->fifo[i_fifo].l_unit )
- if ( p_aout->fifo[i_fifo].l_unit >= /* p_aout->fifo[i_fifo].b_stereo == 1 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 1)) )
- {
- p_aout->fifo[i_fifo].l_unit -= /* p_aout->fifo[i_fifo].b_stereo == 1 */
- ((AOUT_FIFO_SIZE + 1) * (p_aout->fifo[i_fifo].l_frame_size >> 1));
- }
- }
- l_units -= p_aout->fifo[i_fifo].l_units;
-
- vlc_mutex_lock( &p_aout->fifo[i_fifo].data_lock );
- p_aout->fifo[i_fifo].l_start_frame = p_aout->fifo[i_fifo].l_next_frame;
- vlc_cond_signal( &p_aout->fifo[i_fifo].data_wait );
- vlc_mutex_unlock( &p_aout->fifo[i_fifo].data_lock );
-
- /* p_aout->fifo[i_fifo].b_start_frame = 1; */
- p_aout->fifo[i_fifo].l_next_frame += 1;
- p_aout->fifo[i_fifo].l_next_frame &= AOUT_FIFO_SIZE;
- p_aout->fifo[i_fifo].b_next_frame = 0;
- }
- }
- break;
-
- default:
- intf_DbgMsg("aout debug: unknown fifo type (%i)\n", p_aout->fifo[i_fifo].i_type);
- break;
- }
- }
- vlc_mutex_unlock( &p_aout->fifos_lock );
-
- l_buffer_limit = p_aout->l_units << 1; /* p_aout->b_stereo == 1 */
-
- for ( l_buffer = 0; l_buffer < l_buffer_limit; l_buffer++ )
- {
- ((s16 *)p_aout->buffer)[l_buffer] = (s16)( p_aout->s32_buffer[l_buffer] / AOUT_MAX_FIFOS );
- p_aout->s32_buffer[l_buffer] = 0;
- }
-
- l_bytes = p_aout->p_sys_getbufinfo( p_aout, l_buffer_limit );
- p_aout->date = -1000000 + mdate() + ((((mtime_t)(l_bytes / 4)) * 1000000) / ((mtime_t)p_aout->l_rate)); /* sizeof(s16) << (p_aout->b_stereo) == 4 */
- p_aout->p_sys_playsamples( p_aout, (byte_t *)p_aout->buffer, l_buffer_limit * sizeof(s16) );
- if ( l_bytes > (l_buffer_limit * sizeof(s16)) )
- {
- msleep( p_aout->l_msleep );
- }
- }
-
- vlc_mutex_lock( &p_aout->fifos_lock );
- for ( i_fifo = 0; i_fifo < AOUT_MAX_FIFOS; i_fifo++ )
- {
- switch ( p_aout->fifo[i_fifo].i_type )
- {
- case AOUT_EMPTY_FIFO:
- break;
-
- case AOUT_INTF_MONO_FIFO:
- case AOUT_INTF_STEREO_FIFO:
- free( p_aout->fifo[i_fifo].buffer ); /* !! */
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]);
- break;
-
- case AOUT_ADEC_MONO_FIFO:
- case AOUT_ADEC_STEREO_FIFO:
- free( p_aout->fifo[i_fifo].buffer );
- free( p_aout->fifo[i_fifo].date );
- p_aout->fifo[i_fifo].i_type = AOUT_EMPTY_FIFO; /* !! */
- intf_DbgMsg("aout debug: audio output fifo (%p) destroyed\n", &p_aout->fifo[i_fifo]);
- break;
-
- default:
- break;
- }
- }
- vlc_mutex_unlock( &p_aout->fifos_lock );
+ p_date->date += difference;
}
-void aout_Thread_U16_Mono( aout_thread_t * p_aout )
+/*****************************************************************************
+ * aout_DateGet : get the date of an audio_date_t
+ *****************************************************************************/
+mtime_t aout_DateGet( const audio_date_t * p_date )
{
+ return p_date->date;
}
-void aout_Thread_U16_Stereo( aout_thread_t * p_aout )
+/*****************************************************************************
+ * aout_DateIncrement : increment the date and return the result, taking
+ * into account rounding errors
+ *****************************************************************************/
+mtime_t aout_DateIncrement( audio_date_t * p_date, u32 i_nb_samples )
{
+ mtime_t i_dividend = (mtime_t)i_nb_samples * 1000000;
+ p_date->date += i_dividend / p_date->i_divider;
+ p_date->i_remainder += i_dividend % p_date->i_divider;
+ if ( p_date->i_remainder >= p_date->i_divider )
+ {
+ /* This is Bresenham algorithm. */
+ p_date->date++;
+ p_date->i_remainder -= p_date->i_divider;
+ }
+ return p_date->date;
}
+
projects / vlc / blobdiff