1 /*****************************************************************************
2 * spu_decoder.h : sub picture unit decoder thread interface
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: spu_decoder.h,v 1.7 2001/03/21 13:42:34 sam Exp $
7 * Authors: Samuel Hocevar <sam@zoy.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
25 * spudec_thread_t : sub picture unit decoder thread descriptor
26 *****************************************************************************/
27 typedef struct spudec_thread_s
30 * Thread properties and locks
32 vlc_thread_t thread_id; /* id for thread functions */
37 decoder_fifo_t * p_fifo; /* stores the PES stream data */
38 /* The bit stream structure handles the PES stream at the bit level */
39 bit_stream_t bit_stream;
40 vdec_config_t * p_config;
45 vout_thread_t * p_vout; /* needed to create the spu objects */
50 int i_spu_size; /* size of current SPU packet */
51 int i_rle_size; /* size of the RLE part */
56 /*****************************************************************************
58 *****************************************************************************/
59 #define SPU_CMD_FORCE_DISPLAY 0x00
60 #define SPU_CMD_START_DISPLAY 0x01
61 #define SPU_CMD_STOP_DISPLAY 0x02
62 #define SPU_CMD_SET_PALETTE 0x03
63 #define SPU_CMD_SET_ALPHACHANNEL 0x04
64 #define SPU_CMD_SET_COORDINATES 0x05
65 #define SPU_CMD_SET_OFFSETS 0x06
66 #define SPU_CMD_END 0xff
68 /*****************************************************************************
69 * AddNibble: read a nibble from a source packet and add it to our integer.
70 *****************************************************************************/
71 static __inline__ unsigned int AddNibble( unsigned int i_code,
72 u8 *p_src, int *pi_index )
76 return( i_code << 4 | ( p_src[(*pi_index)++ >> 1] & 0xf ) );
80 return( i_code << 4 | p_src[(*pi_index)++ >> 1] >> 4 );
84 /*****************************************************************************
86 *****************************************************************************/
87 vlc_thread_t spudec_CreateThread( vdec_config_t * p_config );