1 /*****************************************************************************
2 * spu_decoder.h : sub picture unit decoder thread interface
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
6 * Authors: Samuel Hocevar <sam@zoy.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 /*****************************************************************************
24 * spudec_thread_t : sub picture unit decoder thread descriptor
25 *****************************************************************************/
26 typedef struct spudec_thread_s
29 * Thread properties and locks
31 vlc_thread_t thread_id; /* id for thread functions */
36 decoder_fifo_t * p_fifo; /* stores the PES stream data */
37 /* The bit stream structure handles the PES stream at the bit level */
38 bit_stream_t bit_stream;
39 vdec_config_t * p_config;
44 vout_thread_t * p_vout; /* needed to create the spu objects */
49 int i_spu_size; /* size of current SPU packet */
50 int i_rle_size; /* size of the RLE part */
55 /*****************************************************************************
57 *****************************************************************************/
58 #define SPU_CMD_FORCE_DISPLAY 0x00
59 #define SPU_CMD_START_DISPLAY 0x01
60 #define SPU_CMD_STOP_DISPLAY 0x02
61 #define SPU_CMD_SET_PALETTE 0x03
62 #define SPU_CMD_SET_ALPHACHANNEL 0x04
63 #define SPU_CMD_SET_COORDINATES 0x05
64 #define SPU_CMD_SET_OFFSETS 0x06
65 #define SPU_CMD_END 0xff
67 /*****************************************************************************
68 * AddNibble: read a nibble from a source packet and add it to our integer.
69 *****************************************************************************/
70 static __inline__ unsigned int AddNibble( unsigned int i_code,
71 u8 *p_src, int *pi_index )
75 return( i_code << 4 | ( p_src[(*pi_index)++ >> 1] & 0xf ) );
79 return( i_code << 4 | p_src[(*pi_index)++ >> 1] >> 4 );
83 /*****************************************************************************
85 *****************************************************************************/
86 vlc_thread_t spudec_CreateThread( vdec_config_t * p_config );