/*****************************************************************************
* dts.c: parse DTS audio sync info and packetize the stream
*****************************************************************************
- * Copyright (C) 2003 VideoLAN
+ * Copyright (C) 2003-2005 the VideoLAN team
* $Id$
*
* Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
*
* 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 <vlc/vlc.h>
-#include <vlc/decoder.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-#include "vlc_block_helper.h"
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_codec.h>
+#include <vlc_aout.h>
+#include <vlc_block_helper.h>
+#include <vlc_bits.h>
-#define DTS_HEADER_SIZE 14
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+static int OpenDecoder ( vlc_object_t * );
+static int OpenPacketizer( vlc_object_t * );
+static void CloseCommon ( vlc_object_t * );
+
+vlc_module_begin ()
+ set_description( N_("DTS parser") )
+ set_capability( "decoder", 100 )
+ set_callbacks( OpenDecoder, CloseCommon )
+
+ add_submodule ()
+ set_description( N_("DTS audio packetizer") )
+ set_capability( "packetizer", 10 )
+ set_callbacks( OpenPacketizer, CloseCommon )
+vlc_module_end ()
/*****************************************************************************
* decoder_sys_t : decoder descriptor
struct decoder_sys_t
{
/* Module mode */
- vlc_bool_t b_packetizer;
+ bool b_packetizer;
/*
* Input properties
mtime_t i_pts;
- int i_frame_size, i_bit_rate;
- unsigned int i_frame_length, i_rate, i_channels, i_channels_conf;
+ bool b_dts_hd; /* Is the current frame a DTS HD one */
+ unsigned int i_bit_rate;
+ unsigned int i_frame_size;
+ unsigned int i_frame_length;
+ unsigned int i_rate;
+ unsigned int i_channels;
+ unsigned int i_channels_conf;
};
enum {
STATE_SEND_DATA
};
+#define DTS_HEADER_SIZE 14
+
/****************************************************************************
* Local prototypes
****************************************************************************/
-static int OpenDecoder ( vlc_object_t * );
-static int OpenPacketizer( vlc_object_t * );
-static void CloseDecoder ( vlc_object_t * );
-static void *DecodeBlock ( decoder_t *, block_t ** );
+static int OpenCommon( vlc_object_t *, bool b_packetizer );
+static void *DecodeBlock( decoder_t *, block_t ** );
static inline int SyncCode( const uint8_t * );
-static int SyncInfo ( const uint8_t *, unsigned int *, unsigned int *,
- unsigned int *, unsigned int *, unsigned int * );
+static int SyncInfo( const uint8_t *, bool *, unsigned int *, unsigned int *,
+ unsigned int *, unsigned int *, unsigned int * );
static uint8_t *GetOutBuffer ( decoder_t *, void ** );
static aout_buffer_t *GetAoutBuffer( decoder_t * );
static block_t *GetSoutBuffer( decoder_t * );
/*****************************************************************************
- * Module descriptor
+ * OpenDecoder: probe the decoder
*****************************************************************************/
-vlc_module_begin();
- set_description( _("DTS parser") );
- set_capability( "decoder", 100 );
- set_callbacks( OpenDecoder, CloseDecoder );
+static int OpenDecoder( vlc_object_t *p_this )
+{
+ /* HACK: Don't use this codec if we don't have an dts audio filter */
+ if( !module_exists( "dtstofloat32" ) )
+ return VLC_EGENERIC;
- add_submodule();
- set_description( _("DTS audio packetizer") );
- set_capability( "packetizer", 10 );
- set_callbacks( OpenPacketizer, NULL );
-vlc_module_end();
+ return OpenCommon( p_this, false );
+}
/*****************************************************************************
- * OpenDecoder: probe the decoder and return score
+ * OpenPacketizer: probe the packetizer
*****************************************************************************/
-static int OpenDecoder( vlc_object_t *p_this )
+static int OpenPacketizer( vlc_object_t *p_this )
+{
+ return OpenCommon( p_this, true );
+}
+
+/*****************************************************************************
+ * OpenCommon:
+ *****************************************************************************/
+static int OpenCommon( vlc_object_t *p_this, bool b_packetizer )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
- if( p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s',' ')
- && p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s','b') )
+ if( p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s',' ') &&
+ p_dec->fmt_in.i_codec != VLC_FOURCC('d','t','s','b') )
{
return VLC_EGENERIC;
}
/* Allocate the memory needed to store the decoder's structure */
- if( ( p_dec->p_sys = p_sys =
- (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
- {
- msg_Err( p_dec, "out of memory" );
- return VLC_EGENERIC;
- }
+ if( ( p_dec->p_sys = p_sys = malloc(sizeof(*p_sys)) ) == NULL )
+ return VLC_ENOMEM;
/* Misc init */
- p_sys->b_packetizer = VLC_FALSE;
+ p_sys->b_packetizer = b_packetizer;
p_sys->i_state = STATE_NOSYNC;
aout_DateSet( &p_sys->end_date, 0 );
+ p_sys->b_dts_hd = false;
- p_sys->bytestream = block_BytestreamInit( p_dec );
+ p_sys->bytestream = block_BytestreamInit();
/* Set output properties */
p_dec->fmt_out.i_cat = AUDIO_ES;
return VLC_SUCCESS;
}
-static int OpenPacketizer( vlc_object_t *p_this )
-{
- decoder_t *p_dec = (decoder_t*)p_this;
-
- int i_ret = OpenDecoder( p_this );
-
- if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = VLC_TRUE;
-
- return i_ret;
-}
-
/****************************************************************************
* DecodeBlock: the whole thing
- ****************************************************************************
- * This function is called just after the thread is launched.
****************************************************************************/
static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
{
uint8_t *p_buf;
void *p_out_buffer;
- if( !pp_block || !*pp_block ) return NULL;
+ if( !pp_block || !*pp_block )
+ return NULL;
- if( !aout_DateGet( &p_sys->end_date ) && !(*pp_block)->i_pts )
+ if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
- /* We've just started the stream, wait for the first PTS. */
+ if( (*pp_block)->i_flags&BLOCK_FLAG_CORRUPTED )
+ {
+ p_sys->i_state = STATE_NOSYNC;
+ block_BytestreamEmpty( &p_sys->bytestream );
+ }
+ aout_DateSet( &p_sys->end_date, 0 );
block_Release( *pp_block );
return NULL;
}
- if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
+ if( !aout_DateGet( &p_sys->end_date ) && !(*pp_block)->i_pts )
{
- p_sys->i_state = STATE_NOSYNC;
+ /* We've just started the stream, wait for the first PTS. */
+ block_Release( *pp_block );
+ return NULL;
}
block_BytestreamPush( &p_sys->bytestream, *pp_block );
/* Check if frame is valid and get frame info */
p_sys->i_frame_size = SyncInfo( p_header,
+ &p_sys->b_dts_hd,
&p_sys->i_channels,
&p_sys->i_channels_conf,
&p_sys->i_rate,
p_sys->i_state = STATE_SEND_DATA;
case STATE_SEND_DATA:
+ if( p_sys->b_dts_hd )
+ {
+ /* Ignore DTS-HD */
+ block_SkipBytes( &p_sys->bytestream, p_sys->i_frame_size );
+ p_sys->i_state = STATE_NOSYNC;
+ break;
+ }
+
if( !(p_buf = GetOutBuffer( p_dec, &p_out_buffer )) )
{
- //p_dec->b_error = VLC_TRUE;
+ //p_dec->b_error = true;
return NULL;
}
}
/*****************************************************************************
- * CloseDecoder: clean up the decoder
+ * CloseCommon: clean up the decoder
*****************************************************************************/
-static void CloseDecoder( vlc_object_t *p_this )
+static void CloseCommon( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys = p_dec->p_sys;
/* Hack for DTS S/PDIF filter which needs to send 3 frames at a time
* (plus a few header bytes) */
- p_buf = p_dec->pf_aout_buffer_new( p_dec, p_sys->i_frame_length * 4 );
+ p_buf = decoder_NewAudioBuffer( p_dec, p_sys->i_frame_length * 4 );
if( p_buf == NULL ) return NULL;
p_buf->i_nb_samples = p_sys->i_frame_length;
p_buf->i_nb_bytes = p_sys->i_frame_size;
{
return VLC_SUCCESS;
}
- else return VLC_EGENERIC;
+ /* DTS-HD */
+ else if( p_buf[0] == 0x64 && p_buf[1] == 0x58 &&
+ p_buf[2] == 0x20 && p_buf[3] == 0x25 )
+ {
+ return VLC_SUCCESS;
+ }
+
+ return VLC_EGENERIC;
}
static int SyncInfo( const uint8_t *p_buf,
+ bool *pb_dts_hd,
unsigned int *pi_channels,
unsigned int *pi_channels_conf,
unsigned int *pi_sample_rate,
i_frame_size = SyncInfo16be( p_buf, &i_audio_mode, pi_sample_rate,
pi_bit_rate, pi_frame_length );
}
- else return 0;
+ /* DTS-HD */
+ else if( p_buf[0] == 0x64 && p_buf[1] == 0x58 &&
+ p_buf[2] == 0x20 && p_buf[3] == 0x25 )
+ {
+ int i_dts_hd_size;
+ bs_t s;
+ bs_init( &s, &p_buf[4], DTS_HEADER_SIZE - 4 );
+
+ bs_skip( &s, 8 + 2 );
+
+ if( bs_read1( &s ) )
+ {
+ bs_skip( &s, 12 );
+ i_dts_hd_size = bs_read( &s, 20 ) + 1;
+ }
+ else
+ {
+ bs_skip( &s, 8 );
+ i_dts_hd_size = bs_read( &s, 16 ) + 1;
+ }
+ //uint16_t s0 = bs_read( &s, 16 );
+ //uint16_t s1 = bs_read( &s, 16 );
+ //fprintf( stderr, "DTS HD=%d : %x %x\n", i_dts_hd_size, s0, s1 );
+
+ *pb_dts_hd = true;
+ /* As we ignore the stream, do not modify those variables:
+ *pi_channels = ;
+ *pi_channels_conf = ;
+ *pi_sample_rate = ;
+ *pi_bit_rate = ;
+ *pi_frame_length = ;
+ */
+ return i_dts_hd_size;
+ }
+
+ *pb_dts_hd = false;
switch( i_audio_mode & 0xFFFF )
{
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