* ./modules/gui/qnx/*: ported the QNX audio output to the new API, courtesy

    of Pascal Levesque.

AUTHORS

@@ -276,7 +276,7 @@ S: USA, California
 
 N: Pascal Levesque
 E: pascal.levesque@mindready.com
-D: QNX RTOS video output
+D: QNX RTOS video output and audio output
 S: Canada, Qubec
 
 N: Arkadiusz Lipiec

modules/gui/qnx/aout.c

 /*****************************************************************************
- * aout.c : QNX audio output 
+ * aout.c : QNX audio output
  *****************************************************************************
  * Copyright (C) 2000, 2001 VideoLAN
  *
  * Authors: Henri Fallon <henri@videolan.org>
  *          Jon Lech Johansen <jon-vl@nanocrew.net>
- * 
+ *          Pascal Levesque <pascal.levesque@mindready.com>
+ *
  * 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
@@ -29,7 +30,13 @@
 #include <stdlib.h>                            /* calloc(), malloc(), free() */
 
 #include <vlc/vlc.h>
+
+#ifdef HAVE_ALLOCA_H
+#   include <alloca.h>
+#endif
+
 #include <vlc/aout.h>
+#include "aout_internal.h"
 
 #include <sys/asoundlib.h>
 
@@ -38,14 +45,22 @@ struct aout_sys_t
     snd_pcm_t  * p_pcm_handle;
     int          i_card;
     int          i_device;
+
+    byte_t *     p_silent_buffer;
+    vlc_bool_t   b_initialized;
 };
 
+#define DEFAULT_FRAME_SIZE 2048
+
 /*****************************************************************************
  * Local prototypes
  *****************************************************************************/
-static int     SetFormat   ( aout_thread_t * );
-static int     GetBufInfo  ( aout_thread_t *, int );
-static void    Play        ( aout_thread_t *, byte_t *, int );
+int            E_(OpenAudio)    ( vlc_object_t *p_this );
+void           E_(CloseAudio)   ( vlc_object_t *p_this );
+static int     GetBufInfo       ( aout_instance_t * );
+static int     SetFormat        ( aout_instance_t * );
+static void    Play             ( aout_instance_t * );
+static int     QNXaoutThread    ( aout_instance_t * );
 
 /*****************************************************************************
  * Open : creates a handle and opens an alsa device
@@ -54,69 +69,83 @@ static void    Play        ( aout_thread_t *, byte_t *, int );
  *****************************************************************************/
 int E_(OpenAudio)( vlc_object_t *p_this )
 {
-    aout_thread_t *p_aout = (aout_thread_t *)p_this;
+    aout_instance_t *p_aout = (aout_instance_t *)p_this;
     int i_ret;
 
     /* allocate structure */
-    p_aout->p_sys = malloc( sizeof( aout_sys_t ) );
-    if( p_aout->p_sys == NULL )
+    p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
+    if( p_aout->output.p_sys == NULL )
     {
         msg_Err( p_aout, "out of memory" );
-        return( 1 );
+        return -1;
     }
 
     /* open audio device */
-    if( ( i_ret = snd_pcm_open_preferred( &p_aout->p_sys->p_pcm_handle,
-                                          &p_aout->p_sys->i_card,
-                                          &p_aout->p_sys->i_device,
+    if( ( i_ret = snd_pcm_open_preferred( &p_aout->output.p_sys->p_pcm_handle,
+                                          &p_aout->output.p_sys->i_card,
+                                          &p_aout->output.p_sys->i_device,
                                           SND_PCM_OPEN_PLAYBACK ) ) < 0 )
     {
         msg_Err( p_aout, "unable to open audio device (%s)",
                          snd_strerror( i_ret ) );
-        free( p_aout->p_sys );
-        return( 1 );
+        free( p_aout->output.p_sys );
+        return -1;
     }
 
     /* disable mmap */
-    if( ( i_ret = snd_pcm_plugin_set_disable( p_aout->p_sys->p_pcm_handle,
+    if( ( i_ret = snd_pcm_plugin_set_disable( p_aout->output.p_sys->p_pcm_handle,
                                               PLUGIN_DISABLE_MMAP ) ) < 0 )
     {
         msg_Err( p_aout, "unable to disable mmap (%s)", snd_strerror(i_ret) );
-        Close( p_this );
-        free( p_aout->p_sys );
-        return( 1 );
+        E_(CloseAudio)( p_this );
+        free( p_aout->output.p_sys );
+        return -1;
     }
 
-    p_aout->pf_setformat = SetFormat;
-    p_aout->pf_getbufinfo = GetBufInfo;
-    p_aout->pf_play = Play;
+    /* Create audio thread and wait for its readiness. */
+    p_aout->output.p_sys->b_initialized = VLC_FALSE;
+    if( vlc_thread_create( p_aout, "aout", QNXaoutThread, VLC_FALSE ) )
+    {
+        msg_Err( p_aout, "cannot create QNX audio thread (%s)", strerror(errno) );
+        E_(CloseAudio)( p_this );
+        free( p_aout->output.p_sys );
+        return -1;
+    }
+
+    p_aout->output.p_sys->p_silent_buffer = malloc( DEFAULT_FRAME_SIZE * 4 );
+
+    p_aout->output.pf_setformat = SetFormat;
+    p_aout->output.pf_play = Play;
 
     return( 0 );
 }
 
 /*****************************************************************************
- * SetFormat : set the audio output format 
+ * SetFormat : set the audio output format
  *****************************************************************************
  * This function prepares the device, sets the rate, format, the mode
  * ("play as soon as you have data"), and buffer information.
  *****************************************************************************/
-static int SetFormat( aout_thread_t *p_aout )
+static int SetFormat( aout_instance_t *p_this )
 {
     int i_ret;
     int i_bytes_per_sample;
     snd_pcm_channel_info_t pi;
     snd_pcm_channel_params_t pp;
+    aout_instance_t *p_aout = (aout_instance_t *)p_this;
+
+    p_aout->output.p_sys->b_initialized = VLC_FALSE;
 
     memset( &pi, 0, sizeof(pi) );
     memset( &pp, 0, sizeof(pp) );
 
     pi.channel = SND_PCM_CHANNEL_PLAYBACK;
-    if( ( i_ret = snd_pcm_plugin_info( p_aout->p_sys->p_pcm_handle,
+    if( ( i_ret = snd_pcm_plugin_info( p_aout->output.p_sys->p_pcm_handle,
                                        &pi ) ) < 0 )
     {
         msg_Err( p_aout, "unable to get plugin info (%s)",
                          snd_strerror( i_ret ) );
-        return( 1 );
+        return -1;
     }
 
     pp.mode       = SND_PCM_MODE_BLOCK;
@@ -124,14 +153,17 @@ static int SetFormat( aout_thread_t *p_aout )
     pp.start_mode = SND_PCM_START_FULL;
     pp.stop_mode  = SND_PCM_STOP_STOP;
 
-    pp.buf.block.frags_max   = 1;
+    pp.buf.block.frags_max   = 3;
     pp.buf.block.frags_min   = 1;
-    
+
     pp.format.interleave     = 1;
-    pp.format.rate           = p_aout->i_rate;
-    pp.format.voices         = p_aout->i_channels;
+    pp.format.rate           = p_aout->output.output.i_rate;
+    pp.format.voices         = p_aout->output.output.i_channels;
+
+    p_aout->output.output.i_format = AOUT_FMT_S16_NE;
+    p_aout->output.i_nb_samples = DEFAULT_FRAME_SIZE;
 
-    switch( p_aout->i_format )
+    switch( p_aout->output.output.i_format )
     {
         case AOUT_FMT_S16_LE:
             pp.format.format = SND_PCM_SFMT_S16_LE;
@@ -144,27 +176,29 @@ static int SetFormat( aout_thread_t *p_aout )
             break;
     }
 
-    pp.buf.block.frag_size =
-        (((s64)p_aout->i_rate * AOUT_BUFFER_DURATION) / 1000000) *
-        p_aout->i_channels * i_bytes_per_sample;
+    pp.buf.block.frag_size = p_aout->output.i_nb_samples *
+                            p_aout->output.output.i_channels *
+                            i_bytes_per_sample;
 
     /* set parameters */
-    if( ( i_ret = snd_pcm_plugin_params( p_aout->p_sys->p_pcm_handle,
+    if( ( i_ret = snd_pcm_plugin_params( p_aout->output.p_sys->p_pcm_handle,
                                          &pp ) ) < 0 )
     {
         msg_Err( p_aout, "unable to set parameters (%s)", snd_strerror(i_ret) );
-        return( 1 );
+        return -1;
     }
 
     /* prepare channel */
-    if( ( i_ret = snd_pcm_plugin_prepare( p_aout->p_sys->p_pcm_handle,
+    if( ( i_ret = snd_pcm_plugin_prepare( p_aout->output.p_sys->p_pcm_handle,
                                           SND_PCM_CHANNEL_PLAYBACK ) ) < 0 )
     {
         msg_Err( p_aout, "unable to prepare channel (%s)",
                          snd_strerror( i_ret ) );
-        return( 1 );
+        return -1;
     }
 
+    p_aout->output.p_sys->b_initialized = VLC_TRUE;
+
     return( 0 );
 }
 
@@ -176,14 +210,14 @@ static int SetFormat( aout_thread_t *p_aout )
  * of data to play, it switches to the "underrun" status. It has to
  * be flushed and re-prepared
  *****************************************************************************/
-static int GetBufInfo( aout_thread_t *p_aout, int i_buffer_limit )
+static int GetBufInfo( aout_instance_t *p_aout )
 {
     int i_ret;
     snd_pcm_channel_status_t status;
 
     /* get current pcm status */
     memset( &status, 0, sizeof(status) );
-    if( ( i_ret = snd_pcm_plugin_status( p_aout->p_sys->p_pcm_handle,
+    if( ( i_ret = snd_pcm_plugin_status( p_aout->output.p_sys->p_pcm_handle,
                                          &status ) ) < 0 )
     {
         msg_Err( p_aout, "unable to get device status (%s)",
@@ -196,7 +230,7 @@ static int GetBufInfo( aout_thread_t *p_aout, int i_buffer_limit )
     {
         case SND_PCM_STATUS_READY:
         case SND_PCM_STATUS_UNDERRUN:
-            if( ( i_ret = snd_pcm_plugin_prepare( p_aout->p_sys->p_pcm_handle,
+            if( ( i_ret = snd_pcm_plugin_prepare( p_aout->output.p_sys->p_pcm_handle,
                                           SND_PCM_CHANNEL_PLAYBACK ) ) < 0 )
             {
                 msg_Err( p_aout, "unable to prepare channel (%s)",
@@ -213,31 +247,100 @@ static int GetBufInfo( aout_thread_t *p_aout, int i_buffer_limit )
  *****************************************************************************
  * Plays a sample using the snd_pcm_write function from the alsa API
  *****************************************************************************/
-static void Play( aout_thread_t *p_aout, byte_t *buffer, int i_size )
+static void Play( aout_instance_t *p_aout )
 {
-    int i_ret;
-
-    if( ( i_ret = snd_pcm_plugin_write( p_aout->p_sys->p_pcm_handle,
-                                        (void *) buffer, 
-                                        (size_t) i_size ) ) <= 0 )
-    {
-        msg_Err( p_aout, "unable to write data (%s)", snd_strerror(i_ret) );
-    }
 }
 
 /*****************************************************************************
  * CloseAudio: close the audio device
  *****************************************************************************/
-static void E_(CloseAudio) ( vlc_object_t *p_this )
+void E_(CloseAudio) ( vlc_object_t *p_this )
 {
-    aout_thread_t *p_aout = (aout_thread_t *)p_this;
+    aout_instance_t *p_aout = (aout_instance_t *)p_this;
     int i_ret;
 
-    if( ( i_ret = snd_pcm_close( p_aout->p_sys->p_pcm_handle ) ) < 0 )
+    p_aout->b_die = 1;
+    vlc_thread_join( p_aout );
+
+    if( ( i_ret = snd_pcm_close( p_aout->output.p_sys->p_pcm_handle ) ) < 0 )
     {
         msg_Err( p_aout, "unable to close audio device (%s)",
                          snd_strerror( i_ret ) );
     }
 
-    free( p_aout->p_sys );
+    free( p_aout->output.p_sys->p_silent_buffer );
+    free( p_aout->output.p_sys );
 }
+
+
+/*****************************************************************************
+ * QNXaoutThread: asynchronous thread used to DMA the data to the device
+ *****************************************************************************/
+static int QNXaoutThread( aout_instance_t * p_aout )
+{
+    struct aout_sys_t * p_sys = p_aout->output.p_sys;
+
+    while ( !p_aout->b_die )
+    {
+        aout_buffer_t * p_buffer;
+        int i_tmp, i_size;
+        byte_t * p_bytes;
+
+        if( !p_sys->b_initialized )
+        {
+            msleep( THREAD_SLEEP );
+            continue;
+        }
+
+        if ( p_aout->output.output.i_format != AOUT_FMT_SPDIF )
+        {
+            mtime_t next_date = 0;
+
+            /* Get the presentation date of the next write() operation. It
+             * is equal to the current date + duration of buffered samples.
+             * Order is important here, since GetBufInfo is believed to take
+             * more time than mdate(). */
+            next_date = (mtime_t)GetBufInfo( p_aout ) * 1000000
+                      / p_aout->output.output.i_bytes_per_frame
+                      / p_aout->output.output.i_rate
+                      * p_aout->output.output.i_frame_length;
+            next_date += mdate();
+
+            p_buffer = aout_OutputNextBuffer( p_aout, next_date, VLC_FALSE );
+        }
+        else
+        {
+            p_buffer = aout_OutputNextBuffer( p_aout, 0, VLC_TRUE );
+        }
+
+        if ( p_buffer != NULL )
+        {
+            p_bytes = p_buffer->p_buffer;
+            i_size = p_buffer->i_nb_bytes;
+        }
+        else
+        {
+            i_size = DEFAULT_FRAME_SIZE / p_aout->output.output.i_frame_length
+                      * p_aout->output.output.i_bytes_per_frame;
+            p_bytes = p_aout->output.p_sys->p_silent_buffer;
+            memset( p_bytes, 0, i_size );
+        }
+
+        i_tmp = snd_pcm_plugin_write( p_aout->output.p_sys->p_pcm_handle,
+                                        (void *) p_bytes,
+                                        (size_t) i_size );
+
+        if( i_tmp < 0 )
+        {
+            msg_Err( p_aout, "write failed (%s)", strerror(errno) );
+        }
+
+        if ( p_buffer != NULL )
+        {
+            aout_BufferFree( p_buffer );
+        }
+    }
+
+    return 0;
+}
+

modules/gui/qnx/vout.c

@@ -129,7 +129,7 @@ static void SetPalette     ( vout_thread_t *, u16 *, u16 *, u16 * );
  * actual properties of the display.
  *****************************************************************************/
 int E_(OpenVideo) ( vlc_object_t *p_this )
-{   
+{
     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 
     /* init connection to photon */
@@ -277,7 +277,7 @@ static void QNXEnd( vout_thread_t *p_vout )
  * Terminate an output method created by QNXCreate
  *****************************************************************************/
 void E_(CloseVideo) ( vlc_object_t *p_this )
-{   
+{
     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 
     /* destroy the window */
@@ -541,16 +541,6 @@ static int QNXInitDisplay( vout_thread_t * p_vout )
         return( 1 );
     }
 
-    /* switch to normal mode if no overlay support */
-//    printf("minfo.mode_capabilities1: 0x%x\n", minfo.mode_capabilities1);
-
-    if( p_vout->p_sys->i_mode == MODE_VIDEO_OVERLAY &&
-        !( minfo.mode_capabilities1 & PgVM_MODE_CAP1_VIDEO_OVERLAY ) )
-    {
-        msg_Err( p_vout, "no overlay support detected" );
-        p_vout->p_sys->i_mode = MODE_NORMAL_MEM;
-    }
-
     if( p_vout->p_sys->i_mode == MODE_VIDEO_OVERLAY )
     {
         int i = 0;