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 *****************************************************************************/
25 #if !defined( __LIBVLC__ )
26 #error You are not libvlc or one of its plugins. You cannot include this file
29 /* Conventions regarding names of symbols and variables
30 * ----------------------------------------------------
32 * - Symbols should begin with a prefix indicating in which module they are
33 * used, such as INTF_, VOUT_ or AOUT_.
36 /*****************************************************************************
37 * General configuration
38 *****************************************************************************/
40 #define CLOCK_FREQ 1000000
43 /* When creating or destroying threads in blocking mode, delay to poll thread
45 #define THREAD_SLEEP ((mtime_t)(0.010*CLOCK_FREQ))
47 /* When a thread waits on a condition in debug mode, delay to wait before
48 * outputting an error message (in second) */
49 #define THREAD_COND_TIMEOUT 3
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 DIRECTORY_ACTIVITY 100
68 #define TRANSCODE_ACTIVITY 10
70 /* Used in ErrorThread */
71 #define INPUT_IDLE_SLEEP ((mtime_t)(0.100*CLOCK_FREQ))
73 /* Time to wait in case of read error */
74 #define INPUT_ERROR_SLEEP ((mtime_t)(0.10*CLOCK_FREQ))
76 /* Number of read() calls needed until we check the file size through
78 #define INPUT_FSTAT_NB_READS 10
84 /* Duration between the time we receive the data packet, and the time we will
85 * mark it to be presented */
86 #define DEFAULT_PTS_DELAY (mtime_t)(.3*CLOCK_FREQ)
88 /* DVD and VCD devices */
89 #if !defined( WIN32 ) && !defined( UNDER_CE )
90 # define CD_DEVICE "/dev/cdrom"
91 # define DVD_DEVICE "/dev/dvd"
93 # define CD_DEVICE "D:"
94 # define DVD_DEVICE NULL
96 #define VCD_DEVICE CD_DEVICE
97 #define CDAUDIO_DEVICE CD_DEVICE
99 /*****************************************************************************
100 * Audio configuration
101 *****************************************************************************/
104 /* If you are coding an interface, please see src/audio_output/intf.c */
105 #define AOUT_VOLUME_DEFAULT 256
106 #define AOUT_VOLUME_STEP 32
107 #define AOUT_VOLUME_MAX 1024
108 #define AOUT_VOLUME_MIN 0
110 /* Max number of pre-filters per input, and max number of post-filters */
111 #define AOUT_MAX_FILTERS 10
113 /* Max number of inputs */
114 #define AOUT_MAX_INPUTS 5
116 /* Buffers which arrive in advance of more than AOUT_MAX_ADVANCE_TIME
117 * will be considered as bogus and be trashed */
118 #define AOUT_MAX_ADVANCE_TIME (mtime_t)(DEFAULT_PTS_DELAY * 5)
120 /* Buffers which arrive in advance of more than AOUT_MAX_PREPARE_TIME
121 * will cause the calling thread to sleep */
122 #define AOUT_MAX_PREPARE_TIME (mtime_t)(.5*CLOCK_FREQ)
124 /* Buffers which arrive after pts - AOUT_MIN_PREPARE_TIME will be trashed
125 * to avoid too heavy resampling */
126 #define AOUT_MIN_PREPARE_TIME (mtime_t)(.04*CLOCK_FREQ)
128 /* Max acceptable delay between the coded PTS and the actual presentation
129 * time, without resampling */
130 #define AOUT_PTS_TOLERANCE (mtime_t)(.04*CLOCK_FREQ)
132 /* Max acceptable resampling (in %) */
133 #define AOUT_MAX_RESAMPLING 10
135 /*****************************************************************************
136 * Video configuration
137 *****************************************************************************/
140 * Default settings for video output threads
143 /* Multiplier value for aspect ratio calculation (2^7 * 3^3 * 5^3) */
144 #define VOUT_ASPECT_FACTOR 432000
146 /* Maximum width of a scaled source picture - this should be relatively high,
147 * since higher stream values will result in no display at all. */
148 #define VOUT_MAX_WIDTH 4096
150 /* Number of planes in a picture */
151 #define VOUT_MAX_PLANES 5
153 /* Video heap size - remember that a decompressed picture is big
154 * (~1 Mbyte) before using huge values */
155 #ifdef OPTIMIZE_MEMORY
156 # define VOUT_MAX_PICTURES 5
158 # define VOUT_MAX_PICTURES 8
161 /* Minimum number of direct pictures the video output will accept without
162 * creating additional pictures in system memory */
163 #define VOUT_MIN_DIRECT_PICTURES 6
165 /* Number of simultaneous subpictures */
166 #define VOUT_MAX_SUBPICTURES 8
168 /* Statistics are displayed every n loops (=~ pictures) */
169 #define VOUT_STATS_NB_LOOPS 100
175 /* Time during which the thread will sleep if it has nothing to
176 * display (in micro-seconds) */
177 #define VOUT_IDLE_SLEEP ((int)(0.020*CLOCK_FREQ))
179 /* Maximum lap of time allowed between the beginning of rendering and
180 * display. If, compared to the current date, the next image is too
181 * late, the thread will perform an idle loop. This time should be
182 * at least VOUT_IDLE_SLEEP plus the time required to render a few
183 * images, to avoid trashing of decoded images */
184 #define VOUT_DISPLAY_DELAY ((int)(0.200*CLOCK_FREQ))
186 /* Pictures which are VOUT_BOGUS_DELAY or more in advance probably have
187 * a bogus PTS and won't be displayed */
188 #define VOUT_BOGUS_DELAY ((mtime_t)(DEFAULT_PTS_DELAY * 30))
190 /* Delay (in microseconds) before an idle screen is displayed */
191 #define VOUT_IDLE_DELAY (5*CLOCK_FREQ)
193 /* Number of pictures required to computes the FPS rate */
194 #define VOUT_FPS_SAMPLES 20
196 /* Better be in advance when awakening than late... */
197 #define VOUT_MWAIT_TOLERANCE ((mtime_t)(0.020*CLOCK_FREQ))
199 /* Time to sleep when waiting for a buffer (from vout or the video fifo).
200 * It should be approximately the time needed to perform a complete picture
201 * loop. Since it only happens when the video heap is full, it does not need
202 * to be too low, even if it blocks the decoder. */
203 #define VOUT_OUTMEM_SLEEP ((mtime_t)(0.020*CLOCK_FREQ))
205 /* The default video output window title */
206 #define VOUT_TITLE "VLC"
208 /*****************************************************************************
209 * Messages and console interfaces configuration
210 *****************************************************************************/
212 /* Maximal size of a message to be stored in the mesage queue,
213 * it is needed when vasprintf is not available */
214 #define INTF_MAX_MSG_SIZE 512
216 /* Maximal size of the message queue - in case of overflow, all messages in the
217 * queue are printed, but not sent to the threads */
218 #define VLC_MSG_QSIZE 256
220 /* Maximal depth of the object tree output by vlc_dumpstructure */
221 #define MAX_DUMPSTRUCTURE_DEPTH 100