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)
45 #define CLOCK_FREQ INT64_C(1000000)
47 /* When creating or destroying threads in blocking mode, delay to poll thread
49 #define THREAD_SLEEP ((mtime_t)(0.010*CLOCK_FREQ))
51 /*****************************************************************************
52 * Interface configuration
53 *****************************************************************************/
55 /* Base delay in micro second for interface sleeps */
56 #define INTF_IDLE_SLEEP ((mtime_t)(0.050*CLOCK_FREQ))
58 /* Step for changing gamma, and minimum and maximum values */
59 #define INTF_GAMMA_STEP .1
60 #define INTF_GAMMA_LIMIT 3
62 /*****************************************************************************
63 * Input thread configuration
64 *****************************************************************************/
66 #define DEFAULT_INPUT_ACTIVITY 1
67 #define TRANSCODE_ACTIVITY 10
69 /* Used in ErrorThread */
70 #define INPUT_IDLE_SLEEP ((mtime_t)(0.100*CLOCK_FREQ))
72 /* Time to wait in case of read error */
73 #define INPUT_ERROR_SLEEP ((mtime_t)(0.10*CLOCK_FREQ))
75 /* Number of read() calls needed until we check the file size through
77 #define INPUT_FSTAT_NB_READS 10
83 /* Duration between the time we receive the data packet, and the time we will
84 * mark it to be presented */
85 #define DEFAULT_PTS_DELAY (mtime_t)(.3*CLOCK_FREQ)
87 /* DVD and VCD devices */
88 #if !defined( WIN32 ) && !defined( UNDER_CE )
89 # define CD_DEVICE "/dev/cdrom"
90 # define DVD_DEVICE "/dev/dvd"
92 # define CD_DEVICE "D:"
93 # define DVD_DEVICE NULL
95 #define VCD_DEVICE CD_DEVICE
96 #define CDAUDIO_DEVICE CD_DEVICE
98 /*****************************************************************************
100 *****************************************************************************/
103 /* If you are coding an interface, please see src/audio_output/intf.c */
104 #define AOUT_VOLUME_DEFAULT 256
105 #define AOUT_VOLUME_STEP 32
106 #define AOUT_VOLUME_MAX 1024
107 #define AOUT_VOLUME_MIN 0
109 /* Max number of pre-filters per input, and max number of post-filters */
110 #define AOUT_MAX_FILTERS 10
112 /* Max number of inputs */
113 #define AOUT_MAX_INPUTS 5
115 /* Buffers which arrive in advance of more than AOUT_MAX_ADVANCE_TIME
116 * will be considered as bogus and be trashed */
117 #define AOUT_MAX_ADVANCE_TIME (mtime_t)(DEFAULT_PTS_DELAY * 5)
119 /* Buffers which arrive in advance of more than AOUT_MAX_PREPARE_TIME
120 * will cause the calling thread to sleep */
121 #define AOUT_MAX_PREPARE_TIME (mtime_t)(.5*CLOCK_FREQ)
123 /* Buffers which arrive after pts - AOUT_MIN_PREPARE_TIME will be trashed
124 * to avoid too heavy resampling */
125 #define AOUT_MIN_PREPARE_TIME (mtime_t)(.04*CLOCK_FREQ)
127 /* Max acceptable delay between the coded PTS and the actual presentation
128 * time, without resampling */
129 #define AOUT_PTS_TOLERANCE (mtime_t)(.04*CLOCK_FREQ)
131 /* Max acceptable resampling (in %) */
132 #define AOUT_MAX_RESAMPLING 10
134 /*****************************************************************************
136 *****************************************************************************/
138 /* Buffer must avoid arriving more than SPU_MAX_PREPARE_TIME in advanced to
140 #define SPU_MAX_PREPARE_TIME ((mtime_t)(0.5*CLOCK_FREQ))
142 /*****************************************************************************
143 * Video configuration
144 *****************************************************************************/
147 * Default settings for video output threads
150 /* Multiplier value for aspect ratio calculation (2^7 * 3^3 * 5^3) */
151 #define VOUT_ASPECT_FACTOR 432000
153 /* Maximum width of a scaled source picture - this should be relatively high,
154 * since higher stream values will result in no display at all. */
155 #define VOUT_MAX_WIDTH 4096
157 /* Number of planes in a picture */
158 #define VOUT_MAX_PLANES 5
160 /* Video heap size - remember that a decompressed picture is big
161 * (~1 Mbyte) before using huge values */
162 #define VOUT_MAX_PICTURES 16
164 /* Statistics are displayed every n loops (=~ pictures) */
165 #define VOUT_STATS_NB_LOOPS 100
171 /* Time to sleep when waiting for a buffer (from vout or the video fifo).
172 * It should be approximately the time needed to perform a complete picture
173 * loop. Since it only happens when the video heap is full, it does not need
174 * to be too low, even if it blocks the decoder. */
175 #define VOUT_OUTMEM_SLEEP ((mtime_t)(0.020*CLOCK_FREQ))
177 /* The default video output window title */
178 #define VOUT_TITLE "VLC"
180 /*****************************************************************************
181 * Messages and console interfaces configuration
182 *****************************************************************************/
184 /* Maximal size of a message to be stored in the mesage queue,
185 * it is needed when vasprintf is not available */
186 #define INTF_MAX_MSG_SIZE 512
188 /* Maximal size of the message queue - in case of overflow, all messages in the
189 * queue are printed, but not sent to the threads */
190 #define VLC_MSG_QSIZE 256
192 /* Maximal depth of the object tree output by vlc_dumpstructure */
193 #define MAX_DUMPSTRUCTURE_DEPTH 100