1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2001, 2002, 2006 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Eric Petit <titer@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_codec.h>
36 #include <vlc_block.h>
38 /*****************************************************************************
40 *****************************************************************************/
41 static int Open ( vlc_object_t * );
42 static void Close( vlc_object_t * );
45 set_category( CAT_SOUT )
46 set_subcategory( SUBCAT_SOUT_PACKETIZER )
47 set_description( N_("Copy packetizer") )
48 set_capability( "packetizer", 1 )
49 set_callbacks( Open, Close )
52 /*****************************************************************************
54 *****************************************************************************/
60 static block_t *Packetize ( decoder_t *, block_t ** );
61 static block_t *PacketizeSub( decoder_t *, block_t ** );
63 /*****************************************************************************
64 * Open: probe the packetizer and return score
65 *****************************************************************************
66 * Tries to launch a decoder and return score so that the interface is able
68 *****************************************************************************/
69 static int Open( vlc_object_t *p_this )
71 decoder_t *p_dec = (decoder_t*)p_this;
74 if( p_dec->fmt_in.i_cat != AUDIO_ES &&
75 p_dec->fmt_in.i_cat != VIDEO_ES &&
76 p_dec->fmt_in.i_cat != SPU_ES )
78 msg_Err( p_dec, "invalid ES type" );
82 if( p_dec->fmt_in.i_cat == SPU_ES )
83 p_dec->pf_packetize = PacketizeSub;
85 p_dec->pf_packetize = Packetize;
87 /* Create the output format */
88 es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
90 /* Fix the value of the fourcc for audio */
91 if( p_dec->fmt_in.i_cat == AUDIO_ES )
93 p_dec->fmt_out.i_codec = vlc_fourcc_GetCodecAudio( p_dec->fmt_in.i_codec,
94 p_dec->fmt_in.audio.i_bitspersample );
95 if( !p_dec->fmt_out.i_codec )
97 msg_Err( p_dec, "unknown raw audio sample size" );
102 p_dec->p_sys = p_sys = malloc( sizeof(*p_sys) );
103 p_sys->p_block = NULL;
108 /*****************************************************************************
110 *****************************************************************************/
111 static void Close( vlc_object_t *p_this )
113 decoder_t *p_dec = (decoder_t*)p_this;
115 if( p_dec->p_sys->p_block )
117 block_ChainRelease( p_dec->p_sys->p_block );
120 es_format_Clean( &p_dec->fmt_out );
121 free( p_dec->p_sys );
124 /*****************************************************************************
125 * Packetize: packetize an unit (here copy a complete block )
126 *****************************************************************************/
127 static block_t *Packetize ( decoder_t *p_dec, block_t **pp_block )
130 block_t *p_ret = p_dec->p_sys->p_block;
132 if( pp_block == NULL || *pp_block == NULL )
134 if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
136 block_Release( *pp_block );
143 if( p_block->i_dts <= VLC_TS_INVALID )
145 p_block->i_dts = p_block->i_pts;
148 if( p_block->i_dts <= VLC_TS_INVALID )
150 msg_Dbg( p_dec, "need valid dts" );
151 block_Release( p_block );
155 if( p_ret != NULL && p_block->i_pts > p_ret->i_pts )
157 p_ret->i_length = p_block->i_pts - p_ret->i_pts;
159 p_dec->p_sys->p_block = p_block;
164 /*****************************************************************************
165 * PacketizeSub: packetize an unit (here copy a complete block )
166 *****************************************************************************/
167 static block_t *PacketizeSub( decoder_t *p_dec, block_t **pp_block )
171 if( pp_block == NULL || *pp_block == NULL )
173 if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
175 block_Release( *pp_block );
182 if( p_block->i_dts <= VLC_TS_INVALID )
184 p_block->i_dts = p_block->i_pts;
187 if( p_block->i_dts <= VLC_TS_INVALID )
189 msg_Dbg( p_dec, "need valid dts" );
190 block_Release( p_block );