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 /* Conventions regarding names of symbols and variables
26 * ----------------------------------------------------
28 * - Symbols should begin with a prefix indicating in which module they are
29 * used, such as INTF_, VOUT_ or AOUT_.
32 /*****************************************************************************
33 * General configuration
34 *****************************************************************************/
36 #define CLOCK_FREQ 1000000
39 /* When creating or destroying threads in blocking mode, delay to poll thread
41 #define THREAD_SLEEP ((mtime_t)(0.010*CLOCK_FREQ))
43 /*****************************************************************************
44 * Interface configuration
45 *****************************************************************************/
47 /* Base delay in micro second for interface sleeps */
48 #define INTF_IDLE_SLEEP ((mtime_t)(0.050*CLOCK_FREQ))
50 /* Step for changing gamma, and minimum and maximum values */
51 #define INTF_GAMMA_STEP .1
52 #define INTF_GAMMA_LIMIT 3
54 /*****************************************************************************
55 * Input thread configuration
56 *****************************************************************************/
58 #define DEFAULT_INPUT_ACTIVITY 1
59 #define DIRECTORY_ACTIVITY 100
60 #define TRANSCODE_ACTIVITY 10
62 /* Used in ErrorThread */
63 #define INPUT_IDLE_SLEEP ((mtime_t)(0.100*CLOCK_FREQ))
65 /* Time to wait in case of read error */
66 #define INPUT_ERROR_SLEEP ((mtime_t)(0.10*CLOCK_FREQ))
68 /* Number of read() calls needed until we check the file size through
70 #define INPUT_FSTAT_NB_READS 10
76 /* Duration between the time we receive the data packet, and the time we will
77 * mark it to be presented */
78 #define DEFAULT_PTS_DELAY (mtime_t)(.3*CLOCK_FREQ)
80 /* DVD and VCD devices */
81 #if !defined( WIN32 ) && !defined( UNDER_CE )
82 # define CD_DEVICE "/dev/cdrom"
83 # define DVD_DEVICE "/dev/dvd"
85 # define CD_DEVICE "D:"
86 # define DVD_DEVICE NULL
88 #define VCD_DEVICE CD_DEVICE
89 #define CDAUDIO_DEVICE CD_DEVICE
91 /*****************************************************************************
93 *****************************************************************************/
96 /* If you are coding an interface, please see src/audio_output/intf.c */
97 #define AOUT_VOLUME_DEFAULT 256
98 #define AOUT_VOLUME_STEP 32
99 #define AOUT_VOLUME_MAX 1024
100 #define AOUT_VOLUME_MIN 0
102 /* Max number of pre-filters per input, and max number of post-filters */
103 #define AOUT_MAX_FILTERS 10
105 /* Max number of inputs */
106 #define AOUT_MAX_INPUTS 5
108 /* Buffers which arrive in advance of more than AOUT_MAX_ADVANCE_TIME
109 * will be considered as bogus and be trashed */
110 #define AOUT_MAX_ADVANCE_TIME (mtime_t)(DEFAULT_PTS_DELAY * 5)
112 /* Buffers which arrive in advance of more than AOUT_MAX_PREPARE_TIME
113 * will cause the calling thread to sleep */
114 #define AOUT_MAX_PREPARE_TIME (mtime_t)(.5*CLOCK_FREQ)
116 /* Buffers which arrive after pts - AOUT_MIN_PREPARE_TIME will be trashed
117 * to avoid too heavy resampling */
118 #define AOUT_MIN_PREPARE_TIME (mtime_t)(.04*CLOCK_FREQ)
120 /* Max acceptable delay between the coded PTS and the actual presentation
121 * time, without resampling */
122 #define AOUT_PTS_TOLERANCE (mtime_t)(.04*CLOCK_FREQ)
124 /* Max acceptable resampling (in %) */
125 #define AOUT_MAX_RESAMPLING 10
127 /*****************************************************************************
128 * Video configuration
129 *****************************************************************************/
132 * Default settings for video output threads
135 /* Multiplier value for aspect ratio calculation (2^7 * 3^3 * 5^3) */
136 #define VOUT_ASPECT_FACTOR 432000
138 /* Maximum width of a scaled source picture - this should be relatively high,
139 * since higher stream values will result in no display at all. */
140 #define VOUT_MAX_WIDTH 4096
142 /* Number of planes in a picture */
143 #define VOUT_MAX_PLANES 5
145 /* Video heap size - remember that a decompressed picture is big
146 * (~1 Mbyte) before using huge values */
147 #define VOUT_MAX_PICTURES 8
149 /* Minimum number of direct pictures the video output will accept without
150 * creating additional pictures in system memory */
151 #define VOUT_MIN_DIRECT_PICTURES 6
153 /* Number of simultaneous subpictures */
154 #define VOUT_MAX_SUBPICTURES 8
156 /* Statistics are displayed every n loops (=~ pictures) */
157 #define VOUT_STATS_NB_LOOPS 100
163 /* Time during which the thread will sleep if it has nothing to
164 * display (in micro-seconds) */
165 #define VOUT_IDLE_SLEEP ((int)(0.020*CLOCK_FREQ))
167 /* Maximum lap of time allowed between the beginning of rendering and
168 * display. If, compared to the current date, the next image is too
169 * late, the thread will perform an idle loop. This time should be
170 * at least VOUT_IDLE_SLEEP plus the time required to render a few
171 * images, to avoid trashing of decoded images */
172 #define VOUT_DISPLAY_DELAY ((int)(0.200*CLOCK_FREQ))
174 /* Pictures which are VOUT_BOGUS_DELAY or more in advance probably have
175 * a bogus PTS and won't be displayed */
176 #define VOUT_BOGUS_DELAY ((mtime_t)(DEFAULT_PTS_DELAY * 30))
178 /* Delay (in microseconds) before an idle screen is displayed */
179 #define VOUT_IDLE_DELAY (5*CLOCK_FREQ)
181 /* Number of pictures required to computes the FPS rate */
182 #define VOUT_FPS_SAMPLES 20
184 /* Better be in advance when awakening than late... */
185 #define VOUT_MWAIT_TOLERANCE ((mtime_t)(0.020*CLOCK_FREQ))
187 /* Time to sleep when waiting for a buffer (from vout or the video fifo).
188 * It should be approximately the time needed to perform a complete picture
189 * loop. Since it only happens when the video heap is full, it does not need
190 * to be too low, even if it blocks the decoder. */
191 #define VOUT_OUTMEM_SLEEP ((mtime_t)(0.020*CLOCK_FREQ))
193 /* The default video output window title */
194 #define VOUT_TITLE "VLC"
196 /*****************************************************************************
197 * Messages and console interfaces configuration
198 *****************************************************************************/
200 /* Maximal size of a message to be stored in the mesage queue,
201 * it is needed when vasprintf is not available */
202 #define INTF_MAX_MSG_SIZE 512
204 /* Maximal size of the message queue - in case of overflow, all messages in the
205 * queue are printed, but not sent to the threads */
206 #define VLC_MSG_QSIZE 256
208 /* Maximal depth of the object tree output by vlc_dumpstructure */
209 #define MAX_DUMPSTRUCTURE_DEPTH 100