1 /*****************************************************************************
2 * subtitle.h : Common SVCD and CVD subtitles header
3 *****************************************************************************
4 * Copyright (C) 2003,2004 VideoLAN
5 * $Id: subtitle.h,v 1.5 2004/01/04 22:22:10 gbazin Exp $
7 * Author: Rocky Bernstein
9 * Julio Sanchez Fernandez (http://subhandler.sourceforge.net)
10 * Sam Hocevar <sam@zoy.org>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
25 *****************************************************************************/
27 #define DECODE_DBG_EXT 1 /* Calls from external routines */
28 #define DECODE_DBG_CALL 2 /* all calls */
29 #define DECODE_DBG_PACKET 4 /* packet assembly info */
30 #define DECODE_DBG_IMAGE 8 /* image bitmaps */
31 #define DECODE_DBG_TRANSFORM 16 /* bitmap transformations */
32 #define DECODE_DBG_RENDER 32 /* rendering information */
33 #define DECODE_DBG_PNG 64 /* Extract subtitles to PNG files. */
34 #define DECODE_DBG_INFO 128
36 #define DEBUG_LONGTEXT N_( \
37 "This integer when viewed in binary is a debugging mask\n" \
40 "packet assembly info 4\n" \
42 "image transformations 16\n" \
43 "rendering information 32\n" \
44 "extract subtitles 64\n" \
47 #define DECODE_DEBUG 1
49 #define dbg_print(mask, s, args...) \
50 if (p_sys && p_sys->i_debug & mask) \
51 msg_Dbg(p_dec, "%s: "s, __func__ , ##args)
53 #define dbg_print(mask, s, args...)
56 #define LOG_ERR(args...) msg_Err( p_input, args )
57 #define LOG_WARN(args...) msg_Warn( p_input, args )
59 #define GETINT16(p) ( (p[0] << 8) + p[1] ) ; p +=2;
61 #define GETINT32(p) ( (p[0] << 24) + (p[1] << 16) + \
62 (p[2] << 8) + (p[3]) ) ; p += 4;
65 /* The number of color palette entries allowed in a subtitle. */
66 #define NUM_SUBTITLE_COLORS 4
70 SUBTITLE_BLOCK_PARTIAL,
71 SUBTITLE_BLOCK_COMPLETE
74 /* Color and transparency of a pixel or a palette (CLUT) entry */
85 /* The storage used by one pixel */
88 /* Size in bytes of YUV portion above. */
91 /* Transparency plane. NOTE: see vlc_video.h for V_PLANE */
92 #define T_PLANE V_PLANE+1
96 int i_debug; /* debugging mask */
97 mtime_t i_pts; /* Start PTS of subtitle block */
99 packet_state_t state; /* data-gathering state for this subtitle */
101 uint16_t i_image; /* image number in the subtitle stream; 0 is the
103 uint8_t i_packet;/* packet number for above image number; 0 is the
105 block_t *p_block;/* Bytes of the packet. */
107 uint8_t buffer[65536 + 20 ]; /* we will never overflow more than 11
108 bytes if I'm right */
110 int i_spu_size; /* goal for subtitle_data_pos while gathering,
111 size of used subtitle_data later */
112 vout_thread_t *p_vout;
114 /* FIXME: Remove this? */
115 uint8_t *subtitle_data; /* buffer used to accumulate data from
116 successive packets in the same subtitle */
117 int subtitle_data_size; /* size of the allocated subtitle_data */
119 /* Move into subpicture_sys_t? */
120 uint16_t comp_image_offset; /* offset from subtitle_data to compressed
122 int comp_image_length; /* size of the compressed image data */
123 int first_field_offset; /* offset of even raster lines. Used
126 int second_field_offset; /* offset of odd raster lines */
127 int metadata_offset; /* offset to data describing the image */
128 int metadata_length; /* length of metadata */
130 int subtitle_data_pos; /* where to write next chunk */
132 uint32_t i_duration; /* how long to display the image, 0 stands
133 for "until next subtitle" */
135 uint16_t i_x_start, i_y_start; /* position of top leftmost pixel of
136 image when displayed */
137 uint16_t i_width, i_height; /* dimensions in pixels of image */
139 ogt_yuvt_t p_palette[NUM_SUBTITLE_COLORS]; /* Palette of colors used
143 ogt_yuvt_t p_palette_highlight[NUM_SUBTITLE_COLORS]; /* Only used
152 struct subpicture_sys_t
154 int i_debug; /* debugging mask */
155 mtime_t i_pts; /* presentation timestamp */
157 uint8_t *p_data; /* Image data one byte T, Y, U, V */
159 /* Link to our input */
160 vlc_object_t * p_input;
162 /* Cropping properties */
165 unsigned int i_x_start, i_y_start, i_x_end, i_y_end;