vlc_config.h

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/*****************************************************************************
 * vlc_config.h: limits and configuration
 * Defines all compilation-time configuration constants and size limits
 *****************************************************************************
 * Copyright (C) 1999-2003 the VideoLAN team
 *
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
 *          Samuel Hocevar <sam@via.ecp.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/**
 * \file
 * This file defines of values used in interface, vout, aout and vlc core functions.
 */

/* Conventions regarding names of symbols and variables
 * ----------------------------------------------------
 *
 * - Symbols should begin with a prefix indicating in which module they are
 *   used, such as INTF_, VOUT_ or AOUT_.
 */

/*****************************************************************************
 * General configuration
 *****************************************************************************/

/* All timestamp below or equal to this define are invalid/unset
 * XXX the numerical value is 0 because of historical reason and will change.*/
#define VLC_TS_INVALID (0)
#define VLC_TS_0 (1)

#define CLOCK_FREQ INT64_C(1000000)

/*****************************************************************************
 * Interface configuration
 *****************************************************************************/

/* Base delay in micro second for interface sleeps */
#define INTF_IDLE_SLEEP                 (CLOCK_FREQ/20)

/* Step for changing gamma, and minimum and maximum values */
#define INTF_GAMMA_STEP                 .1
#define INTF_GAMMA_LIMIT                3

/*****************************************************************************
 * Input thread configuration
 *****************************************************************************/

#define DEFAULT_INPUT_ACTIVITY 1
#define TRANSCODE_ACTIVITY 10

/* Used in ErrorThread */
#define INPUT_IDLE_SLEEP                (CLOCK_FREQ/10)

/* Number of read() calls needed until we check the file size through
 * fstat() */
#define INPUT_FSTAT_NB_READS            16

/*
 * General limitations
 */

/* Duration between the time we receive the data packet, and the time we will
 * mark it to be presented */
#define DEFAULT_PTS_DELAY               (3*CLOCK_FREQ/10)

/*****************************************************************************
 * Audio configuration
 *****************************************************************************/

/* Volume */
/* If you are coding an interface, please see src/audio_output/intf.c */
#define AOUT_VOLUME_DEFAULT             256
#define AOUT_VOLUME_STEP                32
#define AOUT_VOLUME_MAX                 1024
#define AOUT_VOLUME_MIN                 0

/* Max number of pre-filters per input, and max number of post-filters */
#define AOUT_MAX_FILTERS                10

/* Max number of inputs */
#define AOUT_MAX_INPUTS                 5

/* Buffers which arrive in advance of more than AOUT_MAX_ADVANCE_TIME
 * will be considered as bogus and be trashed */
#define AOUT_MAX_ADVANCE_TIME           (DEFAULT_PTS_DELAY * 5)

/* Buffers which arrive in advance of more than AOUT_MAX_PREPARE_TIME
 * will cause the calling thread to sleep */
#define AOUT_MAX_PREPARE_TIME           (CLOCK_FREQ/2)

/* Buffers which arrive after pts - AOUT_MIN_PREPARE_TIME will be trashed
 * to avoid too heavy resampling */
#define AOUT_MIN_PREPARE_TIME           (CLOCK_FREQ/25)

/* Max acceptable delay between the coded PTS and the actual presentation
 * time, without resampling */
#define AOUT_PTS_TOLERANCE              (CLOCK_FREQ/25)

/* Max acceptable resampling (in %) */
#define AOUT_MAX_RESAMPLING             10

/*****************************************************************************
 * SPU configuration
 *****************************************************************************/

/* Buffer must avoid arriving more than SPU_MAX_PREPARE_TIME in advanced to
 * the SPU */
#define SPU_MAX_PREPARE_TIME            (CLOCK_FREQ/2)

/*****************************************************************************
 * Video configuration
 *****************************************************************************/

/*
 * Default settings for video output threads
 */

/* Multiplier value for aspect ratio calculation (2^7 * 3^3 * 5^3) */
#define VOUT_ASPECT_FACTOR              432000

/* Maximum width of a scaled source picture - this should be relatively high,
 * since higher stream values will result in no display at all. */
#define VOUT_MAX_WIDTH                  4096

/* Number of planes in a picture */
#define VOUT_MAX_PLANES                 5

/*
 * Time settings
 */

/* Time to sleep when waiting for a buffer (from vout or the video fifo).
 * It should be approximately the time needed to perform a complete picture
 * loop. Since it only happens when the video heap is full, it does not need
 * to be too low, even if it blocks the decoder. */
#define VOUT_OUTMEM_SLEEP               (CLOCK_FREQ/50)

/* The default video output window title */
#define VOUT_TITLE                      "VLC"

/*****************************************************************************
 * Messages and console interfaces configuration
 *****************************************************************************/

/* Maximal size of a message to be stored in the mesage queue,
 * it is needed when vasprintf is not available */
#define INTF_MAX_MSG_SIZE               512

/* Maximal size of the message queue - in case of overflow, all messages in the
 * queue are printed, but not sent to the threads */
#define VLC_MSG_QSIZE                   256

/* Maximal depth of the object tree output by vlc_dumpstructure */
#define MAX_DUMPSTRUCTURE_DEPTH         100