path: root/input/input.c

/*
 * This file is part of mpv.
 *
 * mpv 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.
 *
 * mpv 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 mpv.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdbool.h>
#include <unistd.h>
#include <math.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <fcntl.h>
#include <pthread.h>
#include <assert.h>

#include <libavutil/avstring.h>
#include <libavutil/common.h>

#include "osdep/io.h"
#include "misc/rendezvous.h"

#include "input.h"
#include "keycodes.h"
#include "cmd_list.h"
#include "cmd_parse.h"
#include "osdep/threads.h"
#include "osdep/timer.h"
#include "common/msg.h"
#include "common/global.h"
#include "options/m_config.h"
#include "options/m_option.h"
#include "options/path.h"
#include "mpv_talloc.h"
#include "options/options.h"
#include "misc/bstr.h"
#include "stream/stream.h"
#include "common/common.h"

#if HAVE_COCOA
#include "osdep/macosx_events.h"
#endif

#define input_lock(ictx)    pthread_mutex_lock(&ictx->mutex)
#define input_unlock(ictx)  pthread_mutex_unlock(&ictx->mutex)

#define MP_MAX_KEY_DOWN 4

struct cmd_bind {
    int keys[MP_MAX_KEY_DOWN];
    int num_keys;
    char *cmd;
    char *location;     // filename/line number of definition
    bool is_builtin;
    struct cmd_bind_section *owner;
};

struct cmd_bind_section {
    char *owner;
    struct cmd_bind *binds;
    int num_binds;
    char *section;
    struct mp_rect mouse_area;  // set at runtime, if at all
    bool mouse_area_set;        // mouse_area is valid and should be tested
    struct cmd_bind_section *next;
};

#define MP_MAX_SOURCES 10

#define MAX_ACTIVE_SECTIONS 50

struct active_section {
    char *name;
    int flags;
};

struct cmd_queue {
    struct mp_cmd *first;
};

struct input_ctx {
    pthread_mutex_t mutex;
    struct mp_log *log;
    struct mpv_global *global;
    struct m_config_cache *opts_cache;
    struct input_opts *opts;

    bool using_alt_gr;
    bool using_ar;
    bool using_cocoa_media_keys;
    bool win_drag;

    // Autorepeat stuff
    short ar_state;
    int64_t last_ar;

    // history of key downs - the newest is in position 0
    int key_history[MP_MAX_KEY_DOWN];
    // key code of the last key that triggered MP_KEY_STATE_DOWN
    int last_key_down;
    int64_t last_key_down_time;
    struct mp_cmd *current_down_cmd;

    int last_doubleclick_key_down;
    double last_doubleclick_time;

    // Mouse position on the consumer side (as command.c sees it)
    int mouse_x, mouse_y;
    char *mouse_section; // last section to receive mouse event

    // Mouse position on the producer side (as the VO sees it)
    // Unlike mouse_x/y, this can be used to resolve mouse click bindings.
    int mouse_vo_x, mouse_vo_y;

    bool mouse_mangle, mouse_src_mangle;
    struct mp_rect mouse_src, mouse_dst;

    // List of command binding sections
    struct cmd_bind_section *cmd_bind_sections;

    // List currently active command sections
    struct active_section active_sections[MAX_ACTIVE_SECTIONS];
    int num_active_sections;

    unsigned int mouse_event_counter;

    struct mp_input_src *sources[MP_MAX_SOURCES];
    int num_sources;

    struct cmd_queue cmd_queue;

    struct mp_cancel *cancel;

    void (*wakeup_cb)(void *ctx);
    void *wakeup_ctx;
};

static int parse_config(struct input_ctx *ictx, bool builtin, bstr data,
                        const char *location, const char *restrict_section);
static void close_input_sources(struct input_ctx *ictx);

#define OPT_BASE_STRUCT struct input_opts
struct input_opts {
    char *config_file;
    int doubleclick_time;
    // Maximum number of queued commands from keypresses (limit to avoid
    // repeated slow commands piling up)
    int key_fifo_size;
    // Autorepeat config (be aware of mp_input_set_repeat_info())
    int ar_delay;
    int ar_rate;
    int use_alt_gr;
    int use_appleremote;
    int use_media_keys;
    int use_app_events;
    int default_bindings;
    int enable_mouse_movements;
    int vo_key_input;
    int test;
};

const struct m_sub_options input_config = {
    .opts = (const m_option_t[]) {
        OPT_STRING("conf", config_file, CONF_GLOBAL | M_OPT_FILE),
        OPT_INT("ar-delay", ar_delay, CONF_GLOBAL),
        OPT_INT("ar-rate", ar_rate, CONF_GLOBAL),
        OPT_PRINT("keylist", mp_print_key_list),
        OPT_PRINT("cmdlist", mp_print_cmd_list),
        OPT_FLAG("default-bindings", default_bindings, CONF_GLOBAL),
        OPT_FLAG("test", test, CONF_GLOBAL),
        OPT_INTRANGE("doubleclick-time", doubleclick_time, 0, 0, 1000),
        OPT_FLAG("right-alt-gr", use_alt_gr, CONF_GLOBAL),
        OPT_INTRANGE("key-fifo-size", key_fifo_size, CONF_GLOBAL, 2, 65000),
        OPT_FLAG("cursor", enable_mouse_movements, CONF_GLOBAL),
        OPT_FLAG("vo-keyboard", vo_key_input, CONF_GLOBAL),
#if HAVE_COCOA
        OPT_FLAG("appleremote", use_appleremote, CONF_GLOBAL),
        OPT_FLAG("media-keys", use_media_keys, CONF_GLOBAL),
        OPT_FLAG("app-events", use_app_events, CONF_GLOBAL),
#endif
        OPT_REPLACED("x11-keyboard", "input-vo-keyboard"),
        {0}
    },
    .size = sizeof(struct input_opts),
    .defaults = &(const struct input_opts){
        .key_fifo_size = 7,
        .doubleclick_time = 300,
        .ar_delay = 200,
        .ar_rate = 40,
        .use_alt_gr = 1,
        .enable_mouse_movements = 1,
#if HAVE_COCOA
        .use_appleremote = 1,
        .use_media_keys = 1,
        .use_app_events = 1,
#endif
        .default_bindings = 1,
        .vo_key_input = 1,
    },
};

static const char builtin_input_conf[] =
#include "input/input_conf.h"
;

static bool test_rect(struct mp_rect *rc, int x, int y)
{
    return x >= rc->x0 && y >= rc->y0 && x < rc->x1 && y < rc->y1;
}

static int queue_count_cmds(struct cmd_queue *queue)
{
    int res = 0;
    for (struct mp_cmd *cmd = queue->first; cmd; cmd = cmd->queue_next)
        res++;
    return res;
}

static void queue_remove(struct cmd_queue *queue, struct mp_cmd *cmd)
{
    struct mp_cmd **p_prev = &queue->first;
    while (*p_prev != cmd) {
        p_prev = &(*p_prev)->queue_next;
    }
    // if this fails, cmd was not in the queue
    assert(*p_prev == cmd);
    *p_prev = cmd->queue_next;
}

static struct mp_cmd *queue_remove_head(struct cmd_queue *queue)
{
    struct mp_cmd *ret = queue->first;
    if (ret)
        queue_remove(queue, ret);
    return ret;
}

static void queue_add_tail(struct cmd_queue *queue, struct mp_cmd *cmd)
{
    struct mp_cmd **p_prev = &queue->first;
    while (*p_prev)
        p_prev = &(*p_prev)->queue_next;
    *p_prev = cmd;
    cmd->queue_next = NULL;
}

static struct mp_cmd *queue_peek_tail(struct cmd_queue *queue)
{
    struct mp_cmd *cur = queue->first;
    while (cur && cur->queue_next)
        cur = cur->queue_next;
    return cur;
}

static void append_bind_info(struct input_ctx *ictx, char **pmsg,
                             struct cmd_bind *bind)
{
    char *msg = *pmsg;
    struct mp_cmd *cmd = mp_input_parse_cmd(ictx, bstr0(bind->cmd),
                                            bind->location);
    b