[vlc-devel] commit: DTS to SPDIF: audio filter2 ( Rémi Denis-Courmont )
git version control
git at videolan.org
Sat Oct 3 15:26:54 CEST 2009
vlc | branch: master | Rémi Denis-Courmont <remi at remlab.net> | Sat Oct 3 16:26:41 2009 +0300| [98632dae64e76897b5d3c079a1265faa1ada7205] | committer: Rémi Denis-Courmont
DTS to SPDIF: audio filter2
> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=98632dae64e76897b5d3c079a1265faa1ada7205
---
modules/audio_filter/converter/dtstospdif.c | 66 ++++++++++++++-------------
1 files changed, 34 insertions(+), 32 deletions(-)
diff --git a/modules/audio_filter/converter/dtstospdif.c b/modules/audio_filter/converter/dtstospdif.c
index f1d58cb..544fc9c 100644
--- a/modules/audio_filter/converter/dtstospdif.c
+++ b/modules/audio_filter/converter/dtstospdif.c
@@ -31,28 +31,22 @@
#include <vlc_common.h>
#include <vlc_plugin.h>
-
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
#include <vlc_aout.h>
+#include <vlc_filter.h>
/*****************************************************************************
* Local structures
*****************************************************************************/
-struct aout_filter_sys_t
+struct filter_sys_t
{
+ mtime_t start_date;
+
/* 3 DTS frames have to be packed into an S/PDIF frame.
* We accumulate DTS frames from the decoder until we have enough to
* send. */
-
+ size_t i_frame_size;
uint8_t *p_buf;
-
- mtime_t start_date;
-
- int i_frames;
- unsigned int i_frame_size;
+ unsigned i_frames;
};
/*****************************************************************************
@@ -60,8 +54,7 @@ struct aout_filter_sys_t
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Close ( vlc_object_t * );
-static void DoWork ( aout_instance_t *, aout_filter_t *, aout_buffer_t *,
- aout_buffer_t * );
+static block_t *DoWork( filter_t *, block_t * );
/*****************************************************************************
* Module descriptor
@@ -70,7 +63,7 @@ vlc_module_begin ()
set_category( CAT_AUDIO )
set_subcategory( SUBCAT_AUDIO_MISC )
set_description( N_("Audio filter for DTS->S/PDIF encapsulation") )
- set_capability( "audio filter", 10 )
+ set_capability( "audio filter2", 10 )
set_callbacks( Create, Close )
vlc_module_end ()
@@ -79,24 +72,27 @@ vlc_module_end ()
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
- aout_filter_t * p_filter = (aout_filter_t *)p_this;
+ filter_t * p_filter = (filter_t *)p_this;
+ filter_sys_t *p_sys;
if( p_filter->fmt_in.audio.i_format != VLC_CODEC_DTS ||
( p_filter->fmt_out.audio.i_format != VLC_CODEC_SPDIFL &&
p_filter->fmt_out.audio.i_format != VLC_CODEC_SPDIFB ) )
{
- return -1;
+ return VLC_EGENERIC;
}
/* Allocate the memory needed to store the module's structure */
- p_filter->p_sys = calloc( 1, sizeof(struct aout_filter_sys_t) );
- if( !p_filter->p_sys )
+ p_sys = p_filter->p_sys = malloc( sizeof(*p_sys) );
+ if( !p_sys )
return VLC_ENOMEM;
+ p_sys->p_buf = NULL;
+ p_sys->i_frame_size = 0;
+ p_sys->i_frames = 0;
- p_filter->pf_do_work = DoWork;
- p_filter->b_in_place = 1;
+ p_filter->pf_audio_filter = DoWork;
- return 0;
+ return VLC_SUCCESS;
}
/*****************************************************************************
@@ -104,16 +100,16 @@ static int Create( vlc_object_t *p_this )
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
- aout_filter_t * p_filter = (aout_filter_t *)p_this;
- if( p_filter->p_sys->i_frame_size ) free( p_filter->p_sys->p_buf );
+ filter_t * p_filter = (filter_t *)p_this;
+
+ free( p_filter->p_sys->p_buf );
free( p_filter->p_sys );
}
/*****************************************************************************
* DoWork: convert a buffer
*****************************************************************************/
-static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
- aout_buffer_t * p_in_buf, aout_buffer_t * p_out_buf )
+static block_t *DoWork( filter_t * p_filter, block_t * p_in_buf )
{
uint32_t i_ac5_spdif_type = 0;
uint16_t i_fz = p_in_buf->i_nb_samples * 4;
@@ -124,10 +120,9 @@ static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
if( p_in_buf->i_buffer != p_filter->p_sys->i_frame_size )
{
/* Frame size changed, reset everything */
- msg_Warn( p_aout, "Frame size changed from %u to %u, "
+ msg_Warn( p_filter, "Frame size changed from %zu to %zu, "
"resetting everything.",
- p_filter->p_sys->i_frame_size,
- (unsigned)p_in_buf->i_buffer );
+ p_filter->p_sys->i_frame_size, p_in_buf->i_buffer );
p_filter->p_sys->i_frame_size = p_in_buf->i_buffer;
p_filter->p_sys->p_buf = realloc( p_filter->p_sys->p_buf,
@@ -136,6 +131,7 @@ static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
}
/* Backup frame */
+ /* TODO: keeping the blocks in a list would save one memcpy */
vlc_memcpy( p_filter->p_sys->p_buf + p_in_buf->i_buffer *
p_filter->p_sys->i_frames,
p_in_buf->p_buffer, p_in_buf->i_buffer );
@@ -149,12 +145,15 @@ static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
p_filter->p_sys->start_date = p_in_buf->i_pts;
/* Not enough data */
- p_out_buf->i_nb_samples = 0;
- p_out_buf->i_buffer = 0;
- return;
+ block_Release( p_in_buf );
+ return NULL;
}
p_filter->p_sys->i_frames = 0;
+ block_t *p_out_buf = filter_NewAudioBuffer( p_filter,
+ 12 * p_in_buf->i_nb_samples );
+ if( !p_out_buf )
+ goto out;
for( i_frame = 0; i_frame < 3; i_frame++ )
{
@@ -216,4 +215,7 @@ static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
p_out_buf->i_pts = p_filter->p_sys->start_date;
p_out_buf->i_nb_samples = p_in_buf->i_nb_samples * 3;
p_out_buf->i_buffer = p_out_buf->i_nb_samples * 4;
+out:
+ block_Release( p_in_buf );
+ return p_out_buf;
}
More information about the vlc-devel
mailing list