1 /*****************************************************************************
2 * spudec.h : sub picture unit decoder thread interface
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: spudec.h,v 1.5 2002/12/06 16:34:05 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 unsigned int i_x_start, i_y_start, i_x_end, i_y_end;
47 /*****************************************************************************
48 * subtitler_font_t : proportional font
49 *****************************************************************************/
50 typedef struct subtitler_font_s
52 unsigned int i_height; /* character height in pixels */
53 unsigned int i_width[256]; /* character widths in pixels */
54 unsigned int i_memory[256]; /* amount of memory used by character */
55 unsigned int * p_length[256]; /* line byte widths */
56 uint16_t ** p_offset[256]; /* pointer to RLE data */
59 /*****************************************************************************
60 * spudec_thread_t : sub picture unit decoder thread descriptor
61 *****************************************************************************/
62 struct spudec_thread_t
65 * Thread properties and locks
67 vlc_thread_t thread_id; /* id for thread functions */
72 decoder_fifo_t * p_fifo; /* stores the PES stream data */
73 /* The bit stream structure handles the PES stream at the bit level */
74 bit_stream_t bit_stream;
79 vout_thread_t * p_vout; /* needed to create the spu objects */
84 unsigned int i_spu_size; /* size of current SPU packet */
85 unsigned int i_rle_size; /* size of the RLE part */
88 /*****************************************************************************
89 * Amount of bytes we GetChunk() in one go
90 *****************************************************************************/
91 #define SPU_CHUNK_SIZE 0x200
93 /*****************************************************************************
95 *****************************************************************************/
96 #define SPU_CMD_FORCE_DISPLAY 0x00
97 #define SPU_CMD_START_DISPLAY 0x01
98 #define SPU_CMD_STOP_DISPLAY 0x02
99 #define SPU_CMD_SET_PALETTE 0x03
100 #define SPU_CMD_SET_ALPHACHANNEL 0x04
101 #define SPU_CMD_SET_COORDINATES 0x05
102 #define SPU_CMD_SET_OFFSETS 0x06
103 #define SPU_CMD_END 0xff
105 /*****************************************************************************
107 *****************************************************************************/
108 int E_(SyncPacket) ( spudec_thread_t * );
109 void E_(ParsePacket) ( spudec_thread_t * );
111 void E_(RenderSPU) ( vout_thread_t *, picture_t *,
112 const subpicture_t * );
114 void E_(ParseText) ( spudec_thread_t *, subtitler_font_t * );
116 subtitler_font_t *E_(subtitler_LoadFont) ( vout_thread_t *, const char * );
117 void E_(subtitler_UnloadFont) ( vout_thread_t *, subtitler_font_t * );
118 void E_(subtitler_PlotSubtitle) ( vout_thread_t *, char *, subtitler_font_t *,