1 /*****************************************************************************
2 * vlc_config.h: limits and configuration
3 * Defines all compilation-time configuration constants and size limits
4 *****************************************************************************
5 * Copyright (C) 1999-2003 the VideoLAN team
7 * Authors: Vincent Seguin <seguin@via.ecp.fr>
8 * Samuel Hocevar <sam@via.ecp.fr>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
27 * This file defines of values used in interface, vout, aout and vlc core functions.
30 /* Conventions regarding names of symbols and variables
31 * ----------------------------------------------------
33 * - Symbols should begin with a prefix indicating in which module they are
34 * used, such as INTF_, VOUT_ or AOUT_.
37 /*****************************************************************************
38 * General configuration
39 *****************************************************************************/
41 /* All timestamp below or equal to this define are invalid/unset
42 * XXX the numerical value is 0 because of historical reason and will change.*/
43 #define VLC_TS_INVALID (0)
46 #define CLOCK_FREQ INT64_C(1000000)
48 /*****************************************************************************
49 * Interface configuration
50 *****************************************************************************/
52 /* Base delay in micro second for interface sleeps */
53 #define INTF_IDLE_SLEEP (CLOCK_FREQ/20)
55 /* Step for changing gamma, and minimum and maximum values */
56 #define INTF_GAMMA_STEP .1
57 #define INTF_GAMMA_LIMIT 3
59 /*****************************************************************************
60 * Input thread configuration
61 *****************************************************************************/
63 #define DEFAULT_INPUT_ACTIVITY 1
64 #define TRANSCODE_ACTIVITY 10
66 /* Used in ErrorThread */
67 #define INPUT_IDLE_SLEEP (CLOCK_FREQ/10)
69 /* Number of read() calls needed until we check the file size through
71 #define INPUT_FSTAT_NB_READS 16
77 /* Duration between the time we receive the data packet, and the time we will
78 * mark it to be presented */
79 #define DEFAULT_PTS_DELAY (3*CLOCK_FREQ/10)
81 /* DVD and VCD devices */
82 #if !defined( WIN32 ) && !defined( UNDER_CE )
83 #if defined(__OpenBSD__)
84 # define CD_DEVICE "/dev/cd0c"
85 # define DVD_DEVICE "/dev/cd0c"
87 # define CD_DEVICE "/dev/cdrom"
88 # define DVD_DEVICE "/dev/dvd"
91 # define CD_DEVICE "D:"
92 # define DVD_DEVICE NULL
94 #define VCD_DEVICE CD_DEVICE
95 #define CDAUDIO_DEVICE CD_DEVICE
97 /*****************************************************************************
99 *****************************************************************************/
102 /* If you are coding an interface, please see src/audio_output/intf.c */
103 #define AOUT_VOLUME_DEFAULT 256
104 #define AOUT_VOLUME_STEP 32
105 #define AOUT_VOLUME_MAX 1024
106 #define AOUT_VOLUME_MIN 0
108 /* Max number of pre-filters per input, and max number of post-filters */
109 #define AOUT_MAX_FILTERS 10
111 /* Max number of inputs */
112 #define AOUT_MAX_INPUTS 5
114 /* Buffers which arrive in advance of more than AOUT_MAX_ADVANCE_TIME
115 * will be considered as bogus and be trashed */
116 #define AOUT_MAX_ADVANCE_TIME (DEFAULT_PTS_DELAY * 5)
118 /* Buffers which arrive in advance of more than AOUT_MAX_PREPARE_TIME
119 * will cause the calling thread to sleep */
120 #define AOUT_MAX_PREPARE_TIME (CLOCK_FREQ/2)
122 /* Buffers which arrive after pts - AOUT_MIN_PREPARE_TIME will be trashed
123 * to avoid too heavy resampling */
124 #define AOUT_MIN_PREPARE_TIME (CLOCK_FREQ/25)
126 /* Max acceptable delay between the coded PTS and the actual presentation
127 * time, without resampling */
128 #define AOUT_PTS_TOLERANCE (CLOCK_FREQ/25)
130 /* Max acceptable resampling (in %) */
131 #define AOUT_MAX_RESAMPLING 10
133 /*****************************************************************************
135 *****************************************************************************/
137 /* Buffer must avoid arriving more than SPU_MAX_PREPARE_TIME in advanced to
139 #define SPU_MAX_PREPARE_TIME (CLOCK_FREQ/2)
141 /*****************************************************************************
142 * Video configuration
143 *****************************************************************************/
146 * Default settings for video output threads
149 /* Multiplier value for aspect ratio calculation (2^7 * 3^3 * 5^3) */
150 #define VOUT_ASPECT_FACTOR 432000
152 /* Maximum width of a scaled source picture - this should be relatively high,
153 * since higher stream values will result in no display at all. */
154 #define VOUT_MAX_WIDTH 4096
156 /* Number of planes in a picture */
157 #define VOUT_MAX_PLANES 5
163 /* Time to sleep when waiting for a buffer (from vout or the video fifo).
164 * It should be approximately the time needed to perform a complete picture
165 * loop. Since it only happens when the video heap is full, it does not need
166 * to be too low, even if it blocks the decoder. */
167 #define VOUT_OUTMEM_SLEEP (CLOCK_FREQ/50)
169 /* The default video output window title */
170 #define VOUT_TITLE "VLC"
172 /*****************************************************************************
173 * Messages and console interfaces configuration
174 *****************************************************************************/
176 /* Maximal size of a message to be stored in the mesage queue,
177 * it is needed when vasprintf is not available */
178 #define INTF_MAX_MSG_SIZE 512
180 /* Maximal size of the message queue - in case of overflow, all messages in the
181 * queue are printed, but not sent to the threads */
182 #define VLC_MSG_QSIZE 256
184 /* Maximal depth of the object tree output by vlc_dumpstructure */
185 #define MAX_DUMPSTRUCTURE_DEPTH 100