1 /*****************************************************************************
2 * config.h: limits and configuration
3 * Defines all compilation-time configuration constants and size limits
4 *****************************************************************************
5 * Copyright (C) 1999, 2000, 2001 VideoLAN
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., 59 Temple Place - Suite 330, Boston, MA 02111, 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 ADEC_.
32 /*****************************************************************************
33 * General configuration
34 *****************************************************************************/
36 #define CLOCK_FREQ 1000000
39 /* Automagically spawn audio and video decoder threads */
42 /* When creating or destroying threads in blocking mode, delay to poll thread
44 #define THREAD_SLEEP ((int)(0.010*CLOCK_FREQ))
46 /* When a thread waits on a condition in debug mode, delay to wait before
47 * outputting an error message (in second) */
48 #define THREAD_COND_TIMEOUT 5
50 /*****************************************************************************
51 * Interface configuration
52 *****************************************************************************/
54 /* Base delay in micro second for interface sleeps */
55 #define INTF_IDLE_SLEEP ((int)(0.050*CLOCK_FREQ))
57 /* Step for changing gamma, and minimum and maximum values */
58 #define INTF_GAMMA_STEP .1
59 #define INTF_GAMMA_LIMIT 3
61 /*****************************************************************************
62 * Input thread configuration
63 *****************************************************************************/
66 #define INPUT_IDLE_SLEEP ((int)(0.100*CLOCK_FREQ))
72 /* Maximum number of input threads - this value is used exclusively by
73 * interface, and is in fact an interface limitation */
74 #define INPUT_MAX_THREADS 10
76 /* Maximum size of a data packet (128 kB) */
77 #define INPUT_MAX_PACKET_SIZE 131072
79 /* Maximum length of a pre-parsed chunk (4 MB) */
80 #define INPUT_PREPARSE_LENGTH 4194304
82 /* Maximum length of a hostname or source name */
83 #define INPUT_MAX_SOURCE_LENGTH 100
85 /* Maximum memory the input is allowed to use (20 MB) */
86 #define INPUT_MAX_ALLOCATION 20971520
92 /* Delay between channel changes - this is required to avoid flooding the
94 #define INPUT_CHANNEL_CHANGE_DELAY (mtime_t)(5*CLOCK_FREQ)
96 /* Duration between the time we receive the data packet, and the time we will
97 * mark it to be presented */
98 #define DEFAULT_PTS_DELAY (mtime_t)(.2*CLOCK_FREQ)
100 /*****************************************************************************
101 * Audio configuration
102 *****************************************************************************/
104 /* Maximum number of audio output threads */
105 #define AOUT_MAX_THREADS 10
108 #define VOLUME_DEFAULT 256
109 #define VOLUME_STEP 128
110 #define VOLUME_MAX 1024
112 /* Number of audio output frames contained in an audio output fifo.
113 * (AOUT_FIFO_SIZE + 1) must be a power of 2, in order to optimise the
114 * %(AOUT_FIFO_SIZE + 1) operation with an &AOUT_FIFO_SIZE.
115 * With 255 we have at least 255*384/2/48000=1 second of sound */
116 #define AOUT_FIFO_SIZE 255
118 /* Maximum number of audio fifos. The value of AOUT_MAX_FIFOS should be a power
119 * of two, in order to optimize the '/AOUT_MAX_FIFOS' and '*AOUT_MAX_FIFOS'
120 * operations with '>>' and '<<' (gcc changes this at compilation-time) */
121 #define AOUT_MAX_FIFOS 2
123 /* Duration (in microseconds) of an audio output buffer should be :
124 * - short, in order to be able to play a new song very quickly (especially a
125 * song from the interface)
126 * - long, in order to perform the buffer calculations as few as possible */
127 #define AOUT_BUFFER_DURATION 50000
129 /*****************************************************************************
130 * Video configuration
131 *****************************************************************************/
133 /* Maximum number of video output threads */
134 #define VOUT_MAX_THREADS 256
137 * Default settings for video output threads
140 /* Multiplier value for aspect ratio calculation (2^7 * 3^3 * 5^3) */
141 #define VOUT_ASPECT_FACTOR 432000
143 /* Maximum width of a scaled source picture - this should be relatively high,
144 * since higher stream values will result in no display at all. */
145 #define VOUT_MAX_WIDTH 4096
147 /* Number of planes in a picture */
148 #define VOUT_MAX_PLANES 5
150 /* Video heap size - remember that a decompressed picture is big
151 * (~1 Mbyte) before using huge values */
152 #define VOUT_MAX_PICTURES 8
154 /* Number of simultaneous subpictures */
155 #define VOUT_MAX_SUBPICTURES 8
157 /* Maximum number of active areas in a rendering buffer. Active areas are areas
158 * of the picture which need to be cleared before re-using the buffer. If a
159 * picture, including its many additions such as subtitles, additionnal user
160 * informations and interface, has too many active areas, some of them are
162 #define VOUT_MAX_AREAS 5
165 #define VOUT_DEFAULT_FONT "default8x9.psf"
166 #define VOUT_LARGE_FONT "default8x16.psf"
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)(0.500*CLOCK_FREQ))
186 /* Delay (in microseconds) before an idle screen is displayed */
187 #define VOUT_IDLE_DELAY (5*CLOCK_FREQ)
189 /* Number of pictures required to computes the FPS rate */
190 #define VOUT_FPS_SAMPLES 20
192 /* Better be in advance when awakening than late... */
193 #define VOUT_MWAIT_TOLERANCE ((int)(0.020*CLOCK_FREQ))
195 /* Time to sleep when waiting for a buffer (from vout or the video fifo).
196 * It should be approximately the time needed to perform a complete picture
197 * loop. Since it only happens when the video heap is full, it does not need
198 * to be too low, even if it blocks the decoder. */
199 #define VOUT_OUTMEM_SLEEP ((int)(0.020*CLOCK_FREQ))
201 /* The default video output window title */
202 #define VOUT_TITLE "VideoLAN Client " VERSION
204 /*****************************************************************************
205 * Video parser configuration
206 *****************************************************************************/
208 #define VPAR_IDLE_SLEEP ((int)(0.010*CLOCK_FREQ))
210 /* Optimization level, from 0 to 2 - 1 is generally a good compromise. Remember
211 * that raising this level dramatically lengthens the compilation time. */
212 #if defined( HAVE_RELEASE ) || defined( __pentiumpro__ )
213 # define VPAR_OPTIM_LEVEL 2
215 # define VPAR_OPTIM_LEVEL 1
218 /* Maximum number of macroblocks in a picture. */
221 /*****************************************************************************
222 * Video decoder configuration
223 *****************************************************************************/
225 #define VDEC_IDLE_SLEEP ((int)(0.100*CLOCK_FREQ))
227 /* Maximum range of values out of the IDCT + motion compensation. */
228 #define VDEC_CROPRANGE 2048
230 /* No SMP by default, since it slows down things on non-smp machines. */
231 #define VDEC_SMP_DEFAULT 0
233 /* Nice increments for decoders -- necessary for x11 scheduling */
236 /*****************************************************************************
237 * Messages and console interfaces configuration
238 *****************************************************************************/
240 /* Maximal size of a message to be stored in the mesage queue,
241 * it is needed when vasprintf is not avalaible */
242 #define INTF_MAX_MSG_SIZE 512
244 /* Maximal size of the message queue - in case of overflow, all messages in the
245 * queue are printed, but not sent to the threads */
246 #define INTF_MSG_QSIZE 256