Commit 05fea708 authored by Sam Hocevar's avatar Sam Hocevar
Browse files

* ./modules/audio_output/esd.c: fixed a stack space leak (Closes: #113).

parent b2940c86
......@@ -2,7 +2,7 @@
* esd.c : EsounD module
*****************************************************************************
* Copyright (C) 2000, 2001 VideoLAN
* $Id: esd.c,v 1.15 2002/11/15 17:17:29 gbazin Exp $
* $Id: esd.c,v 1.16 2003/01/28 03:46:22 sam Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
*
......@@ -57,6 +57,7 @@ static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
static void Play ( aout_instance_t * );
static int ESDThread ( aout_instance_t * );
static void ESDLoop ( aout_instance_t * );
/*****************************************************************************
* Module descriptor
......@@ -120,7 +121,7 @@ static int Open( vlc_object_t *p_this )
p_aout->output.output.i_rate, NULL, "vlc" );
if( p_sys->i_fd < 0 )
{
msg_Err( p_aout, "cannot open esound socket (format 0x%08x at %ld Hz)",
msg_Err( p_aout, "cannot open esound socket (format 0x%08x at %d Hz)",
p_sys->esd_format, p_aout->output.output.i_rate );
free( p_sys );
return -1;
......@@ -179,49 +180,60 @@ static void Close( vlc_object_t *p_this )
*****************************************************************************/
static int ESDThread( 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;
/* Get the presentation date of the next write() operation. It
* is equal to the current date + buffered samples + esd latency */
p_buffer = aout_OutputNextBuffer( p_aout, mdate() + p_sys->latency,
VLC_FALSE );
if ( p_buffer != NULL )
{
p_bytes = p_buffer->p_buffer;
i_size = p_buffer->i_nb_bytes;
}
else
{
i_size = ESD_BUF_SIZE * 2
/ p_aout->output.output.i_frame_length
* p_aout->output.output.i_bytes_per_frame;
p_bytes = alloca( i_size );
memset( p_bytes, 0, i_size );
}
i_tmp = write( p_sys->i_fd, p_bytes, i_size );
if( i_tmp < 0 )
{
msg_Err( p_aout, "write failed (%s)", strerror(errno) );
}
if ( p_buffer != NULL )
{
aout_BufferFree( p_buffer );
}
ESDLoop( p_aout );
}
return 0;
}
/*****************************************************************************
* ESDLoop: ESDThread's inner loop
*****************************************************************************
* This is a separate function because it makes use of alloca() which makes
* use of the caller's stack frame, which means we need to return after each
* iteration.
*****************************************************************************/
static void ESDLoop( aout_instance_t * p_aout )
{
struct aout_sys_t * p_sys = p_aout->output.p_sys;
aout_buffer_t * p_buffer;
int i_tmp, i_size;
byte_t * p_bytes = NULL;
/* Get the presentation date of the next write() operation. It
* is equal to the current date + buffered samples + esd latency */
p_buffer = aout_OutputNextBuffer( p_aout, mdate() + p_sys->latency,
VLC_FALSE );
if ( p_buffer != NULL )
{
p_bytes = p_buffer->p_buffer;
i_size = p_buffer->i_nb_bytes;
}
else
{
i_size = ESD_BUF_SIZE * 2
/ p_aout->output.output.i_frame_length
* p_aout->output.output.i_bytes_per_frame;
p_bytes = alloca( i_size );
memset( p_bytes, 0, i_size );
}
i_tmp = write( p_sys->i_fd, p_bytes, i_size );
if( i_tmp < 0 )
{
msg_Err( p_aout, "write failed (%s)", strerror(errno) );
}
if ( p_buffer != NULL )
{
aout_BufferFree( p_buffer );
}
}
#if 0
/*****************************************************************************
* Play: play a sound samples buffer
......
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