/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
#include "camera_driver.h"
#include "../configuration.h"
#include "../driver.h"
#include "../retroarch.h"
#include "../list_special.h"
#include "../verbosity.h"
static const camera_driver_t *camera_drivers[] = {
#ifdef HAVE_V4L2
&camera_v4l2,
#endif
#ifdef EMSCRIPTEN
&camera_rwebcam,
#endif
#ifdef ANDROID
&camera_android,
#endif
#if defined(HAVE_AVFOUNDATION)
#if defined(HAVE_COCOA) || defined(HAVE_COCOATOUCH)
&camera_avfoundation,
#endif
#endif
&camera_null,
NULL,
};
static struct retro_camera_callback camera_cb;
static const camera_driver_t *camera_driver = NULL;
static void *camera_data = NULL;
static bool camera_driver_active = false;
static bool camera_driver_data_own = false;
/**
* camera_driver_find_handle:
* @idx : index of driver to get handle to.
*
* Returns: handle to camera driver at index. Can be NULL
* if nothing found.
**/
const void *camera_driver_find_handle(int idx)
{
const void *drv = camera_drivers[idx];
if (!drv)
return NULL;
return drv;
}
/**
* camera_driver_find_ident:
* @idx : index of driver to get handle to.
*
* Returns: Human-readable identifier of camera driver at index. Can be NULL
* if nothing found.
**/
const char *camera_driver_find_ident(int idx)
{
const camera_driver_t *drv = camera_drivers[idx];
if (!drv)
return NULL;
return drv->ident;
}
/**
* config_get_camera_driver_options:
*
* Get an enumerated list of all camera driver names,
* separated by '|'.
*
* Returns: string listing of all camera driver names,
* separated by '|'.
**/
const char* config_get_camera_driver_options(void)
{
return char_list_new_special(STRING_LIST_CAMERA_DRIVERS, NULL);
}
void driver_camera_stop(void)
{
camera_driver_ctl(RARCH_CAMERA_CTL_START, NULL);
}
bool driver_camera_start(void)
{
return camera_driver_ctl(RARCH_CAMERA_CTL_START, NULL);
}
void camera_driver_poll(void)
{
if (!camera_cb.caps)
return;
if (!camera_driver || !camera_driver->poll || !camera_data)
return;
camera_driver->poll(camera_data,
camera_cb.frame_raw_framebuffer,
camera_cb.frame_opengl_texture);
}
bool camera_driver_ctl(enum rarch_camera_ctl_state state, void *data)
{
settings_t *settings = config_get_ptr();
switch (state)
{
case RARCH_CAMERA_CTL_DESTROY:
camera_driver_active = false;
camera_driver_data_own = false;
camera_driver = NULL;
camera_data = NULL;
break;
case RARCH_CAMERA_CTL_SET_OWN_DRIVER:
camera_driver_data_own = true;
break;
case RARCH_CAMERA_CTL_UNSET_OWN_DRIVER:
camera_driver_data_own = false;
break;
case RARCH_CAMERA_CTL_OWNS_DRIVER:
return camera_driver_data_own;
case RARCH_CAMERA_CTL_SET_ACTIVE:
camera_driver_active = true;
break;
case RARCH_CAMERA_CTL_FIND_DRIVER:
{
int i;
driver_ctx_info_t drv;
drv.label = "camera_driver";
drv.s = settings->arrays.camera_driver;
driver_ctl(RARCH_DRIVER_CTL_FIND_INDEX, &drv);
i = (int)drv.len;
if (i >= 0)
camera_driver = (const camera_driver_t*)camera_driver_find_handle(i);
else
{
if (verbosity_is_enabled())
{
unsigned d;
RARCH_ERR("Couldn't find any camera driver named \"%s\"\n",
settings->arrays.camera_driver);
RARCH_LOG_OUTPUT("Available camera drivers are:\n");
for (d = 0; camera_driver_find_handle(d); d++)
RARCH_LOG_OUTPUT("\t%s\n", camera_driver_find_ident(d));
RARCH_WARN("Going to default to first camera driver...\n");
}
camera_driver = (const camera_driver_t*)camera_driver_find_handle(0);
if (!camera_driver)
retroarch_fail(1, "find_camera_driver()");
}
}
break;
case RARCH_CAMERA_CTL_UNSET_ACTIVE:
camera_driver_active = false;
break;
case RARCH_CAMERA_CTL_IS_ACTIVE:
return camera_driver_active;
case RARCH_CAMERA_CTL_DEINIT:
if (camera_data && camera_driver)
{
if (camera_cb.deinitialized)
camera_cb.deinitialized();
if (camera_driver->free)
camera_driver->free(camera_data);
}
camera_data = NULL;
break;
case RARCH_CAMERA_CTL_STOP:
if ( camera_driver
&& camera_driver->stop
&& camera_data)
camera_driver->stop(camera_data);
break;
case RARCH_CAMERA_CTL_START:
if (camera_driver && camera_data && camera_driver->start)
{
if (settings->bools.camera_allow)
return camera_driver->start(camera_data);
runloop_msg_queue_push(
"Camera is explicitly disabled.\n", 1, 180, false);
}
break;
case RARCH_CAMERA_CTL_SET_CB:
{
struct retro_camera_callback *cb =
(struct retro_camera_callback*)data;
camera_cb = *cb;
}
break;
case RARCH_CAMERA_CTL_INIT:
/* Resource leaks will follow if camera is initialized twice. */
if (camera_data)
return false;
camera_driver_ctl(RARCH_CAMERA_CTL_FIND_DRIVER, NULL);
if (!camera_driver)
return false;
camera_data = camera_driver->init(
*settings->arrays.camera_device ? settings->arrays.camera_device : NULL,
camera_cb.caps,
settings->uints.camera_width ?
settings->uints.camera_width : camera_cb.width,
settings->uints.camera_height ?
settings->uints.camera_height : camera_cb.height);
if (!camera_data)
{
RARCH_ERR("Failed to initialize camera driver. Will continue without camera.\n");
camera_driver_ctl(RARCH_CAMERA_CTL_UNSET_ACTIVE, NULL);
}
if (camera_cb.initialized)
camera_cb.initialized();
break;
default:
break;
}
return true;
}