--- /dev/null
+/*****************************************************************************
+ * dts.c : raw DTS stream input module for vlc
+ *****************************************************************************
+ * Copyright (C) 2001 VideoLAN
+ * $Id: dts.c,v 1.1 2003/12/01 23:39:11 gbazin Exp $
+ *
+ * Authors: Gildas Bazin <gbazin@netcourrier.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
+ * 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, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <vlc/vlc.h>
+#include <vlc/input.h>
+#include <vlc_codec.h>
+
+#define DTS_PACKET_SIZE 16384
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int Open ( vlc_object_t * );
+static void Close ( vlc_object_t * );
+static int Demux ( input_thread_t * );
+
+struct demux_sys_t
+{
+ vlc_bool_t b_start;
+ es_out_id_t *p_es;
+
+ /* Packetizer */
+ decoder_t *p_packetizer;
+};
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+vlc_module_begin();
+ set_description( _("Raw DTS demuxer") );
+ set_capability( "demux", 155 );
+ set_callbacks( Open, Close );
+ add_shortcut( "dts" );
+vlc_module_end();
+
+/*****************************************************************************
+ * Open: initializes ES structures
+ *****************************************************************************/
+static int Open( vlc_object_t * p_this )
+{
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ demux_sys_t *p_sys;
+ byte_t * p_peek;
+
+ p_input->pf_demux = Demux;
+ p_input->pf_demux_control = demux_vaControlDefault;
+ p_input->pf_rewind = NULL;
+
+ /* Have a peep at the show. */
+ if( input_Peek( p_input, &p_peek, 4 ) < 4 )
+ {
+ /* Stream shorter than 4 bytes... */
+ msg_Err( p_input, "cannot peek()" );
+ return VLC_EGENERIC;
+ }
+
+ if( p_peek[0] != 0x7f || p_peek[1] != 0xfe ||
+ p_peek[2] != 0x80 || p_peek[3] != 0x01 )
+ {
+ if( p_input->psz_demux && !strncmp( p_input->psz_demux, "dts", 3 ) )
+ {
+ /* User forced */
+ msg_Err( p_input, "this doesn't look like a DTS audio stream, "
+ "continuing anyway" );
+ }
+ else
+ {
+ return VLC_EGENERIC;
+ }
+ }
+
+ p_input->p_demux_data = p_sys = malloc( sizeof( demux_sys_t ) );
+ p_sys->b_start = VLC_TRUE;
+
+ /*
+ * Load the DTS packetizer
+ */
+ p_sys->p_packetizer = vlc_object_create( p_input, VLC_OBJECT_DECODER );
+ p_sys->p_packetizer->pf_decode_audio = 0;
+ p_sys->p_packetizer->pf_decode_video = 0;
+ p_sys->p_packetizer->pf_decode_sub = 0;
+ p_sys->p_packetizer->pf_packetize = 0;
+
+ /* Initialization of decoder structure */
+ es_format_Init( &p_sys->p_packetizer->fmt_in, AUDIO_ES,
+ VLC_FOURCC( 'd', 't', 's', ' ' ) );
+
+ p_sys->p_packetizer->p_module =
+ module_Need( p_sys->p_packetizer, "packetizer", NULL );
+ if( !p_sys->p_packetizer->p_module )
+ {
+ msg_Err( p_input, "cannot find DTS packetizer" );
+ return VLC_EGENERIC;
+ }
+
+ /* Create one program */
+ vlc_mutex_lock( &p_input->stream.stream_lock );
+ if( input_InitStream( p_input, 0 ) == -1 )
+ {
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+ msg_Err( p_input, "cannot init stream" );
+ return VLC_EGENERIC;
+ }
+ p_input->stream.i_mux_rate = 0;
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+
+ p_sys->p_es =
+ es_out_Add( p_input->p_es_out, &p_sys->p_packetizer->fmt_in );
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Close: frees unused data
+ *****************************************************************************/
+static void Close( vlc_object_t * p_this )
+{
+ input_thread_t *p_input = (input_thread_t*)p_this;
+ demux_sys_t *p_sys = p_input->p_demux_data;
+
+ /* Unneed module */
+ module_Unneed( p_sys->p_packetizer, p_sys->p_packetizer->p_module );
+
+ /* Delete the decoder */
+ vlc_object_destroy( p_sys->p_packetizer );
+
+ free( p_sys );
+}
+
+/*****************************************************************************
+ * Demux: reads and demuxes data packets
+ *****************************************************************************
+ * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
+ *****************************************************************************/
+static int Demux( input_thread_t * p_input )
+{
+ demux_sys_t *p_sys = p_input->p_demux_data;
+ block_t *p_block_in, *p_block_out;
+
+ if( !( p_block_in = stream_Block( p_input->s, DTS_PACKET_SIZE ) ) )
+ {
+ return 0;
+ }
+
+ if( p_sys->b_start )
+ {
+ p_block_in->i_pts = p_block_in->i_dts = 1;
+ p_sys->b_start = VLC_FALSE;
+ }
+ else
+ {
+ p_block_in->i_pts = p_block_in->i_dts = 0;
+ }
+
+ while( (p_block_out = p_sys->p_packetizer->pf_packetize(
+ p_sys->p_packetizer, &p_block_in )) )
+ {
+ while( p_block_out )
+ {
+ block_t *p_next = p_block_out->p_next;
+
+ input_ClockManageRef( p_input,
+ p_input->stream.p_selected_program,
+ p_block_out->i_pts * 9 / 100 );
+
+ p_block_in->b_discontinuity = 0;
+ p_block_out->i_dts = p_block_out->i_pts =
+ input_ClockGetTS( p_input, p_input->stream.p_selected_program,
+ p_block_out->i_pts * 9 / 100 );
+
+ es_out_Send( p_input->p_es_out, p_sys->p_es, p_block_out );
+
+ p_block_out = p_next;
+ }
+ }
+
+ return 1;
+}
* system.c: helper module for TS, PS and PES management
*****************************************************************************
* Copyright (C) 1998-2002 VideoLAN
- * $Id: system.c,v 1.22 2003/11/26 20:44:38 fenrir Exp $
+ * $Id: system.c,v 1.23 2003/12/01 23:39:11 gbazin Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Michel Lespinasse <walken@via.ecp.fr>
}
/* Welcome to the kludge area ! --Meuuh */
- if ( p_es->i_fourcc == VLC_FOURCC('a','5','2','b') )
+ if ( p_es->i_fourcc == VLC_FOURCC('a','5','2','b')
+ || p_es->i_fourcc == VLC_FOURCC('d','t','s','b') )
{
- /* With A/52 audio, we need to skip the first 4 bytes */
+ /* With A/52 or DTS audio, we need to skip the first 4 bytes */
i_pes_header_size += 4;
}
if ( p_es->i_fourcc == VLC_FOURCC('l','p','c','b')
|| p_es->i_fourcc == VLC_FOURCC('s','p','u','b')
- || p_es->i_fourcc == VLC_FOURCC('d','t','s','b')
|| p_es->i_fourcc == VLC_FOURCC('s','d','d','b') )
{
/* stream_private_id */
projects / vlc / commitdiff