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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* sound.c: functions related making noise
*/
#include "vim.h"
#if defined(FEAT_SOUND) || defined(PROTO)
static long sound_id = 0;
typedef struct soundcb_S soundcb_T;
struct soundcb_S {
callback_T snd_callback;
#ifdef MSWIN
MCIDEVICEID snd_device_id;
long snd_id;
#endif
soundcb_T *snd_next;
};
static soundcb_T *first_callback = NULL;
/*
* Return TRUE when a sound callback has been created, it may be invoked when
* the sound finishes playing. Also see has_sound_callback_in_queue().
*/
int
has_any_sound_callback(void)
{
return first_callback != NULL;
}
static soundcb_T *
get_sound_callback(typval_T *arg)
{
callback_T callback;
soundcb_T *soundcb;
if (arg->v_type == VAR_UNKNOWN)
return NULL;
callback = get_callback(arg);
if (callback.cb_name == NULL)
return NULL;
soundcb = ALLOC_ONE(soundcb_T);
if (soundcb == NULL)
free_callback(&callback);
else
{
soundcb->snd_next = first_callback;
first_callback = soundcb;
set_callback(&soundcb->snd_callback, &callback);
}
return soundcb;
}
/*
* Call "soundcb" with proper parameters.
*/
void
call_sound_callback(soundcb_T *soundcb, long snd_id, int result)
{
typval_T argv[3];
typval_T rettv;
argv[0].v_type = VAR_NUMBER;
argv[0].vval.v_number = snd_id;
argv[1].v_type = VAR_NUMBER;
argv[1].vval.v_number = result;
argv[2].v_type = VAR_UNKNOWN;
call_callback(&soundcb->snd_callback, -1, &rettv, 2, argv);
clear_tv(&rettv);
}
/*
* Delete "soundcb" from the list of pending callbacks.
*/
void
delete_sound_callback(soundcb_T *soundcb)
{
soundcb_T *p;
soundcb_T *prev = NULL;
for (p = first_callback; p != NULL; prev = p, p = p->snd_next)
if (p == soundcb)
{
if (prev == NULL)
first_callback = p->snd_next;
else
prev->snd_next = p->snd_next;
free_callback(&p->snd_callback);
vim_free(p);
break;
}
}
#if defined(HAVE_CANBERRA) || defined(PROTO)
/*
* Sound implementation for Linux/Unix using libcanberra.
*/
# include <canberra.h>
static ca_context *context = NULL;
// Structure to store info about a sound callback to be invoked soon.
typedef struct soundcb_queue_S soundcb_queue_T;
struct soundcb_queue_S {
soundcb_queue_T *scb_next;
uint32_t scb_id; // ID of the sound
int scb_result; // CA_ value
soundcb_T *scb_callback; // function to call
};
// Queue of callbacks to invoke from the main loop.
static soundcb_queue_T *callback_queue = NULL;
/*
* Add a callback to the queue of callbacks to invoke later from the main loop.
* That is because the callback may be called from another thread and invoking
* another sound function may cause trouble.
*/
static void
sound_callback(
ca_context *c UNUSED,
uint32_t id,
int error_code,
void *userdata)
{
soundcb_T *soundcb = (soundcb_T *)userdata;
soundcb_queue_T *scb;
scb = ALLOC_ONE(soundcb_queue_T);
if (scb == NULL)
return;
scb->scb_next = callback_queue;
callback_queue = scb;
scb->scb_id = id;
scb->scb_result = error_code == CA_SUCCESS ? 0
: error_code == CA_ERROR_CANCELED
|| error_code == CA_ERROR_DESTROYED
? 1 : 2;
scb->scb_callback = soundcb;
}
/*
* Return TRUE if there is a sound callback to be called.
*/
int
has_sound_callback_in_queue(void)
{
return callback_queue != NULL;
}
/*
* Invoke queued sound callbacks.
*/
void
invoke_sound_callback(void)
{
soundcb_queue_T *scb;
while (callback_queue != NULL)
{
scb = callback_queue;
callback_queue = scb->scb_next;
call_sound_callback(scb->scb_callback, scb->scb_id, scb->scb_result);
delete_sound_callback(scb->scb_callback);
vim_free(scb);
}
redraw_after_callback(TRUE, FALSE);
}
static void
sound_play_common(typval_T *argvars, typval_T *rettv, int playfile)
{
if (in_vim9script() && check_for_string_arg(argvars, 0) == FAIL)
return;
if (context == NULL)
ca_context_create(&context);
if (context != NULL)
{
soundcb_T *soundcb = get_sound_callback(&argvars[1]);
int res = CA_ERROR_INVALID;
++sound_id;
if (soundcb == NULL)
{
res = ca_context_play(context, sound_id,
playfile ? CA_PROP_MEDIA_FILENAME : CA_PROP_EVENT_ID,
tv_get_string(&argvars[0]),
CA_PROP_CANBERRA_CACHE_CONTROL, "volatile",
NULL);
}
else
{
static ca_proplist *proplist = NULL;
ca_proplist_create(&proplist);
if (proplist != NULL)
{
if (playfile)
ca_proplist_sets(proplist, CA_PROP_MEDIA_FILENAME,
(char *)tv_get_string(&argvars[0]));
else
ca_proplist_sets(proplist, CA_PROP_EVENT_ID,
(char *)tv_get_string(&argvars[0]));
ca_proplist_sets(proplist, CA_PROP_CANBERRA_CACHE_CONTROL,
"volatile");
res = ca_context_play_full(context, sound_id, proplist,
sound_callback, soundcb);
if (res != CA_SUCCESS)
delete_sound_callback(soundcb);
ca_proplist_destroy(proplist);
}
}
rettv->vval.v_number = res == CA_SUCCESS ? sound_id : 0;
}
}
void
f_sound_playevent(typval_T *argvars, typval_T *rettv)
{
sound_play_common(argvars, rettv, FALSE);
}
/*
* implementation of sound_playfile({path} [, {callback}])
*/
void
f_sound_playfile(typval_T *argvars, typval_T *rettv)
{
sound_play_common(argvars, rettv, TRUE);
}
/*
* implementation of sound_stop({id})
*/
void
f_sound_stop(typval_T *argvars, typval_T *rettv UNUSED)
{
if (in_vim9script() && check_for_number_arg(argvars, 0) == FAIL)
return;
if (context != NULL)
ca_context_cancel(context, tv_get_number(&argvars[0]));
}
/*
* implementation of sound_clear()
*/
void
f_sound_clear(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
{
if (context != NULL)
{
ca_context_destroy(context);
context = NULL;
}
}
# if defined(EXITFREE) || defined(PROTO)
void
sound_free(void)
{
soundcb_queue_T *scb;
if (context != NULL)
ca_context_destroy(context);
while (first_callback != NULL)
delete_sound_callback(first_callback);
while (callback_queue != NULL)
{
scb = callback_queue;
callback_queue = scb->scb_next;
delete_sound_callback(scb->scb_callback);
vim_free(scb);
}
}
# endif
#elif defined(MSWIN)
/*
* Sound implementation for MS-Windows.
*/
static HWND g_hWndSound = NULL
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