1 /*****************************************************************************
2 * spudec.h : sub picture unit decoder thread interface
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: spudec.h,v 1.3 2002/11/06 18:07:57 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 typedef struct spudec_thread_t spudec_thread_t;
26 struct subpicture_sys_t
28 mtime_t i_pts; /* presentation timestamp */
30 int pi_offset[2]; /* byte offsets to data */
33 /* Color information */
38 /* Link to our input */
39 vlc_object_t * p_input;
41 /* Cropping properties */
44 int i_x_start, i_y_start, i_x_end, i_y_end;
47 /*****************************************************************************
48 * spudec_thread_t : sub picture unit decoder thread descriptor
49 *****************************************************************************/
50 struct spudec_thread_t
53 * Thread properties and locks
55 vlc_thread_t thread_id; /* id for thread functions */
60 decoder_fifo_t * p_fifo; /* stores the PES stream data */
61 /* The bit stream structure handles the PES stream at the bit level */
62 bit_stream_t bit_stream;
67 vout_thread_t * p_vout; /* needed to create the spu objects */
72 int i_spu_size; /* size of current SPU packet */
73 int i_rle_size; /* size of the RLE part */
76 /*****************************************************************************
77 * Amount of bytes we GetChunk() in one go
78 *****************************************************************************/
79 #define SPU_CHUNK_SIZE 0x200
81 /*****************************************************************************
83 *****************************************************************************/
84 #define SPU_CMD_FORCE_DISPLAY 0x00
85 #define SPU_CMD_START_DISPLAY 0x01
86 #define SPU_CMD_STOP_DISPLAY 0x02
87 #define SPU_CMD_SET_PALETTE 0x03
88 #define SPU_CMD_SET_ALPHACHANNEL 0x04
89 #define SPU_CMD_SET_COORDINATES 0x05
90 #define SPU_CMD_SET_OFFSETS 0x06
91 #define SPU_CMD_END 0xff
93 /*****************************************************************************
95 *****************************************************************************/
96 int E_(SyncPacket) ( spudec_thread_t * );
97 void E_(ParsePacket) ( spudec_thread_t * );
99 void E_(RenderSPU) ( vout_thread_t *, picture_t *,
100 const subpicture_t * );