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efl/src/lib/ethumb/client/ethumb_client.c

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/**
* @file
*
* This is the client-server thumbnail library, see @ref
* tutorial_ethumb_client.
*
* Copyright (C) 2009 by ProFUSION embedded systems
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library;
* if not, see <http://www.gnu.org/licenses/>.
*
* @author Rafael Antognolli <antognolli@profusion.mobi>
* @author Gustavo Sverzut Barbieri <barbieri@profusion.mobi>
*/
/**
* @page tutorial_ethumb_client Client-Server Thumbnailing Tutorial
*
* @section tutorial_ethumb_client_intro Introduction
*
* Ethumb provides both in process and client-server generation
* methods. The advantage of the client-server method is that current
* process will not do the heavy operations that may block, stopping
* animations and other user interactions. Instead the client library
* will configure a local #Ethumb instance and mirrors/controls a
* remote process using DBus. The simple operations like most setters
* and getters as well as checking for thumbnail existence
* (ethumb_client_thumb_exists()) is done locally, while expensive
* (ethumb_client_generate()) are done on server and then reported
* back to application when it is finished (both success or failure).
*
* @section tutorial_ethumb_client_connect Connecting to Server
*
* TODO
*
* @section tutorial_ethumb_client_generate Requesting Thumbnail Generation
*
* TODO
*
* @section tutorial_ethumb_client_setup Setup Extra Thumbnail Parameters
*
* TODO
*
* @section tutorial_ethumb_client_server_died Handle Server Disconnection
*
* TODO
*/
/**
* @cond LOCAL
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <stdbool.h>
#include <Eina.h>
#include <eina_safety_checks.h>
#include <EDBus.h>
#include <Ethumb.h>
#include <Ecore.h>
#include "Ethumb_Client.h"
#ifndef PATH_MAX
#define PATH_MAX 4096
#endif
#define MAX_ID 2000000
static int _log_dom = -1;
#define DBG(...) EINA_LOG_DOM_DBG(_log_dom, __VA_ARGS__)
#define INF(...) EINA_LOG_DOM_INFO(_log_dom, __VA_ARGS__)
#define WRN(...) EINA_LOG_DOM_WARN(_log_dom, __VA_ARGS__)
#define ERR(...) EINA_LOG_DOM_ERR(_log_dom, __VA_ARGS__)
#define CRITICAL(...) EINA_LOG_DOM_CRIT(_log_dom, __VA_ARGS__)
struct _Ethumb_Client
{
Ethumb *ethumb;
int id_count;
Ethumb *old_ethumb_conf;
EDBus_Connection *conn;
struct
{
Ethumb_Client_Connect_Cb cb;
void *data;
Eina_Free_Cb free_data;
} connect;
Eina_List *pending_add;
Eina_List *pending_remove;
Eina_List *pending_gen;
struct
{
Ethumb_Client_Die_Cb cb;
void *data;
Eina_Free_Cb free_data;
} die;
EDBus_Proxy *proxy;
EINA_REFCOUNT;
Eina_Bool connected : 1;
Eina_Bool server_started : 1;
};
struct _ethumb_pending_add
{
int32_t id;
const char *file;
const char *key;
const char *thumb;
const char *thumb_key;
Ethumb_Client_Generate_Cb generated_cb;
void *data;
Eina_Free_Cb free_data;
EDBus_Pending *pending_call;
Ethumb_Client *client;
};
struct _ethumb_pending_remove
{
int32_t id;
Ethumb_Client_Generate_Cancel_Cb cancel_cb;
void *data;
Eina_Free_Cb free_data;
Ethumb_Client *client;
};
struct _ethumb_pending_gen
{
int32_t id;
const char *file;
const char *key;
const char *thumb;
const char *thumb_key;
Ethumb_Client_Generate_Cb generated_cb;
void *data;
Eina_Free_Cb free_data;
};
typedef struct _Ethumb_Async_Exists Ethumb_Async_Exists;
struct _Ethumb_Async_Exists
{
const char *path;
Ethumb *dup; /* We will work on that one to prevent race and lock */
Eina_List *callbacks;
Ecore_Thread *thread;
};
struct _Ethumb_Exists
{
Ethumb_Async_Exists *parent;
Ethumb_Client *client;
Ethumb *dup; /* We don't want to loose parameters so keep them around */
Ethumb_Client_Thumb_Exists_Cb exists_cb;
const void *data;
};
static const char _ethumb_dbus_bus_name[] = "org.enlightenment.Ethumb";
static const char _ethumb_dbus_interface[] = "org.enlightenment.Ethumb";
static const char _ethumb_dbus_objects_interface[] = "org.enlightenment.Ethumb.objects";
static const char _ethumb_dbus_path[] = "/org/enlightenment/Ethumb";
static int _initcount = 0;
static Eina_Hash *_exists_request = NULL;
static void _ethumb_client_generated_cb(void *data, const EDBus_Message *msg);
static void _ethumb_client_call_new(Ethumb_Client *client);
static void _ethumb_client_name_owner_changed(void *context, const char *bus, const char *old_id, const char *new_id);
static void
_ethumb_client_free(Ethumb_Client *client)
{
void *data;
EDBus_Object *obj;
if (!client->connected)
goto end_connection;
EINA_LIST_FREE(client->pending_add, data)
{
struct _ethumb_pending_add *pending = data;
edbus_pending_cancel(pending->pending_call);
}
EINA_LIST_FREE(client->pending_gen, data)
{
struct _ethumb_pending_gen *pending = data;
eina_stringshare_del(pending->file);
eina_stringshare_del(pending->key);
eina_stringshare_del(pending->thumb);
eina_stringshare_del(pending->thumb_key);
if (pending->free_data)
pending->free_data(pending->data);
free(pending);
}
EINA_LIST_FREE(client->pending_remove, data)
{
struct _ethumb_pending_remove *pending = data;
if (pending->free_data)
pending->free_data(pending->data);
free(pending);
}
end_connection:
if (client->old_ethumb_conf)
ethumb_free(client->old_ethumb_conf);
ethumb_free(client->ethumb);
edbus_name_owner_changed_callback_del(client->conn, _ethumb_dbus_bus_name,
_ethumb_client_name_owner_changed,
client);
obj = edbus_proxy_object_get(client->proxy);
edbus_proxy_unref(client->proxy);
edbus_object_unref(obj);
edbus_connection_unref(client->conn);
if (client->connect.free_data)
client->connect.free_data(client->connect.data);
if (client->die.free_data)
client->die.free_data(client->die.data);
free(client);
}
static void
_ethumb_async_delete(void *data)
{
Ethumb_Async_Exists *async = data;
EINA_SAFETY_ON_FALSE_RETURN(async->callbacks == NULL);
EINA_SAFETY_ON_FALSE_RETURN(async->thread == NULL);
ethumb_free(async->dup);
eina_stringshare_del(async->path);
free(async);
}
static void
_ethumb_client_name_owner_changed(void *context, const char *bus EINA_UNUSED, const char *old_id, const char *new_id)
{
Ethumb_Client *client = context;
DBG("NameOwnerChanged from=[%s] to=[%s]", old_id, new_id);
if (new_id[0])
{
if (client->connected)
return;
client->connected = EINA_TRUE;
_ethumb_client_call_new(client);
return;
}
ERR("server exit!!!");
client->connected = EINA_FALSE;
if (client->die.cb)
{
client->die.cb(client->die.data, client);
client->die.cb = NULL;
}
if (client->die.free_data)
{
client->die.free_data(client->die.data);
client->die.free_data = NULL;
client->die.data = NULL;
}
}
static void
_ethumb_client_report_connect(Ethumb_Client *client, Eina_Bool success)
{
if (!client->connect.cb)
{
ERR("already called?!");
return;
}
client->connect.cb(client->connect.data, client, success);
if (client->connect.free_data)
{
client->connect.free_data(client->connect.data);
client->connect.free_data = NULL;
}
client->connect.cb = NULL;
client->connect.data = NULL;
}
static void
_ethumb_client_new_cb(void *data, const EDBus_Message *msg, EDBus_Pending *pending EINA_UNUSED)
{
const char *errname, *errmsg;
const char *opath;
Ethumb_Client *client = data;
EDBus_Object *obj;
if (edbus_message_error_get(msg, &errname, &errmsg))
{
ERR("Error: %s %s", errname, errmsg);
return;
}
if (!edbus_message_arguments_get(msg, "o", &opath))
{
ERR("Error: could not get entry contents");
_ethumb_client_report_connect(client, 0);
return;
}
obj = edbus_object_get(client->conn, _ethumb_dbus_bus_name, opath);
client->proxy = edbus_proxy_get(obj, _ethumb_dbus_objects_interface);
edbus_proxy_signal_handler_add(client->proxy, "generated",
_ethumb_client_generated_cb, client);
_ethumb_client_report_connect(client, 1);
}
static void
_ethumb_client_call_new(Ethumb_Client *client)
{
EDBus_Message *msg;
msg = edbus_message_method_call_new(_ethumb_dbus_bus_name,
_ethumb_dbus_path,
_ethumb_dbus_interface, "new");
edbus_connection_send(client->conn, msg, _ethumb_client_new_cb, client, -1);
edbus_message_unref(msg);
}
static void
_ethumb_client_exists_heavy(void *data, Ecore_Thread *thread EINA_UNUSED)
{
Ethumb_Async_Exists *async = data;
ethumb_thumb_hash(async->dup);
}
static void
_ethumb_client_exists_end(void *data, Ecore_Thread *thread EINA_UNUSED)
{
Ethumb_Async_Exists *async = data;
Ethumb_Exists *cb;
EINA_LIST_FREE(async->callbacks, cb)
{
Ethumb *tmp;
ethumb_thumb_hash_copy(cb->dup, async->dup);
tmp = cb->client->ethumb;
cb->client->ethumb = cb->dup;
cb->exists_cb((void *)cb->data,
cb->client, cb,
ethumb_exists(cb->client->ethumb));
cb->client->ethumb = tmp;
EINA_REFCOUNT_UNREF(cb->client)
_ethumb_client_free(cb->client);
ethumb_free(cb->dup);
free(cb);
}
async->thread = NULL;
eina_hash_del(_exists_request, async->path, async);
}
/**
* @endcond
*/
/**
* @brief Initialize the Ethumb_Client library.
*
* @return 1 or greater on success, 0 on error.
*
* This function sets up all the Ethumb_Client module dependencies. It
* returns 0 on failure (that is, when one of the dependency fails to
* initialize), otherwise it returns the number of times it has
* already been called.
*
* When Ethumb_Client is not used anymore, call
* ethumb_client_shutdown() to shut down the Ethumb_Client library.
*
* @see ethumb_client_shutdown()
* @see ethumb_client_connect()
* @see @ref tutorial_ethumb_client
*/
EAPI int
ethumb_client_init(void)
{
if (_initcount)
return ++_initcount;
if (!eina_init())
{
fprintf(stderr, "ERROR: Could not initialize log module.\n");
return 0;
}
_log_dom = eina_log_domain_register("ethumb_client", EINA_COLOR_YELLOW);
if (_log_dom < 0)
{
EINA_LOG_ERR("Could not register log domain: ethumb_client");
eina_shutdown();
return 0;
}
ethumb_init();
edbus_init();
_exists_request = eina_hash_stringshared_new(_ethumb_async_delete);
return ++_initcount;
}
/**
* @brief Shut down the Ethumb_Client library.
*
* @return 0 when everything is shut down, 1 or greater if there are
* other users of the Ethumb_Client library pending shutdown.
*
* This function shuts down the Ethumb_Client library. It returns 0
* when it has been called the same number of times than
* ethumb_client_init(). In that case it shut down all the
* Ethumb_Client modules dependencies.
*
* Once this function succeeds (that is, @c 0 is returned), you must
* not call any of the Eina function anymore. You must call
* ethumb_client_init() again to use the Ethumb_Client functions
* again.
*/
EAPI int
ethumb_client_shutdown(void)
{
_initcount--;
if (_initcount > 0)
return _initcount;
/* should find a non racy solution to closing all pending exists request */
eina_hash_free(_exists_request);
_exists_request = NULL;
edbus_shutdown();
ethumb_shutdown();
eina_log_domain_unregister(_log_dom);
_log_dom = -1;
eina_shutdown();
return _initcount;
}
/**
* Connects to Ethumb server and return the client instance.
*
* This is the "constructor" of Ethumb_Client, where everything
* starts.
*
* If server was down, it is tried to start it using DBus activation,
* then the connection is retried.
*
* This call is asynchronous and will not block, instead it will be in
* "not connected" state until @a connect_cb is called with either
* success or failure. On failure, then no methods should be
* called. On success you're now able to setup and then ask generation
* of thumbnails.
*
* Usually you should listen for server death/disconenction with
* ethumb_client_on_server_die_callback_set().
*
* @param connect_cb function to call to report connection success or
* failure. Do not call any other ethumb_client method until
* this function returns. The first received parameter is the
* given argument @a data. Must @b not be @c NULL. This
* function will not be called if user explicitly calls
* ethumb_client_disconnect().
* @param data context to give back to @a connect_cb. May be @c NULL.
* @param free_data function used to release @a data resources, if
* any. May be @c NULL. If this function exists, it will be
* called immediately after @a connect_cb is called or if user
* explicitly calls ethumb_client_disconnect() before such
* (that is, don't rely on @a data after @a connect_cb was
* called!)
*
* @return client instance or NULL if failed. If @a connect_cb is
* missing it returns @c NULL. If it fail for other
* conditions, @c NULL is also returned and @a connect_cb is
* called with @c success=EINA_FALSE. The client instance is
* not ready to be used until @a connect_cb is called.
*/
EAPI Ethumb_Client *
ethumb_client_connect(Ethumb_Client_Connect_Cb connect_cb, const void *data, Eina_Free_Cb free_data)
{
Ethumb_Client *eclient;
EINA_SAFETY_ON_NULL_RETURN_VAL(connect_cb, NULL);
eclient = calloc(1, sizeof(*eclient));
if (!eclient)
{
ERR("could not allocate Ethumb_Client structure.");
goto err;
}
eclient->old_ethumb_conf = NULL;
eclient->connect.cb = connect_cb;
eclient->connect.data = (void *)data;
eclient->connect.free_data = free_data;
eclient->ethumb = ethumb_new();
if (!eclient->ethumb)
{
ERR("could not create ethumb handler.");
goto ethumb_new_err;
}
eclient->conn = edbus_connection_get(EDBUS_CONNECTION_TYPE_SESSION);
if (!eclient->conn)
{
ERR("could not connect to session bus.");
goto connection_err;
}
edbus_name_start(eclient->conn, _ethumb_dbus_bus_name, 0, NULL, NULL);
edbus_name_owner_changed_callback_add(eclient->conn, _ethumb_dbus_bus_name,
_ethumb_client_name_owner_changed,
eclient, EINA_TRUE);
EINA_REFCOUNT_INIT(eclient);
return eclient;
connection_err:
ethumb_free(eclient->ethumb);
ethumb_new_err:
free(eclient);
err:
connect_cb((void *)data, NULL, EINA_FALSE);
if (free_data)
free_data((void *)data);
return NULL;
}
/**
* Disconnect the client, releasing all client resources.
*
* This is the destructor of Ethumb_Client, after it's disconnected
* the client handle is now gone and should not be used.
*
* @param client client instance to be destroyed. Must @b not be @c
* NULL.
*/
EAPI void
ethumb_client_disconnect(Ethumb_Client *client)
{
EINA_SAFETY_ON_NULL_RETURN(client);
EINA_REFCOUNT_UNREF(client)
_ethumb_client_free(client);
}
/**
* Sets the callback to report server died.
*
* When server dies there is nothing you can do, just release
* resources with ethumb_client_disconnect() and probably try to
* connect again.
*
* Usually you should set this callback and handle this case, it does
* happen!
*
* @param client the client instance to monitor. Must @b not be @c
* NULL.
* @param server_die_cb function to call back when server dies. The
* first parameter will be the argument @a data. May be @c
* NULL.
* @param data context to give back to @a server_die_cb. May be @c
* NULL.
* @param free_data used to release @a data resources after @a
* server_die_cb is called or user calls
* ethumb_client_disconnect().
*/
EAPI void
ethumb_client_on_server_die_callback_set(Ethumb_Client *client, Ethumb_Client_Die_Cb server_die_cb, const void *data, Eina_Free_Cb free_data)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (client->die.free_data)
client->die.free_data(client->die.data);
client->die.cb = server_die_cb;
client->die.data = (void *)data;
client->die.free_data = free_data;
}
/**
* @cond LOCAL
*/
static void
_ethumb_client_ethumb_setup_cb(void *data EINA_UNUSED, const EDBus_Message *msg, EDBus_Pending *pending EINA_UNUSED)
{
const char *errname, *errmsg;
Eina_Bool result = 0;
if (edbus_message_error_get(msg, &errname, &errmsg))
{
ERR("Error: %s %s\n", errname, errmsg);
return;
}
if (!edbus_message_arguments_get(msg, "b", &result))
{
ERR("Error getting arguments");
return;
}
EINA_SAFETY_ON_FALSE_RETURN(result);
}
static const char *
_ethumb_client_dbus_get_bytearray(EDBus_Message_Iter *array)
{
int length;
const char *result;
if (edbus_message_iter_fixed_array_get(array, 'y', &result, &length))
return eina_stringshare_add_length(result, length);
else
{
ERR("Not byte array. Signature: %s",
edbus_message_iter_signature_get(array));
return NULL;
}
}
static void
_ethumb_client_dbus_append_bytearray(EDBus_Message_Iter *parent, const char *string)
{
int i, size;
EDBus_Message_Iter *array;
if (!string)
string = "";
array = edbus_message_iter_container_new(parent, 'a', "y");
size = strlen(string) + 1;
for (i = 0; i < size; i++)
edbus_message_iter_basic_append(array, 'y', string[i]);
edbus_message_iter_container_close(parent, array);
}
/**
* @endcond
*/
static EDBus_Message_Iter *
_setup_iterator_open(EDBus_Message_Iter *array, EDBus_Message_Iter **entry, const char *key, const char *type)
{
EDBus_Message_Iter *variant, *_struct;
edbus_message_iter_arguments_append(array, "{sv}", &_struct);
edbus_message_iter_basic_append(_struct, 's', key);
variant = edbus_message_iter_container_new(_struct, 'v', type);
*entry = _struct;
return variant;
}
static void
_setup_iterator_close(EDBus_Message_Iter *array, EDBus_Message_Iter *entry, EDBus_Message_Iter *variant)
{
edbus_message_iter_container_close(entry, variant);
edbus_message_iter_container_close(array, entry);
}
/**
* Send setup to server.
*
* This method is called automatically by ethumb_client_generate() if
* any property was changed. No need to call it manually.
*
* @param client client instance. Must @b not be @c NULL and client
* must be connected (after connected_cb is called).
*/
EAPI void
ethumb_client_ethumb_setup(Ethumb_Client *client)
{
EDBus_Message *msg;
EDBus_Message_Iter *array, *main_iter;
EDBus_Message_Iter *entry, *variant;
EDBus_Message_Iter *sub_struct;
Ethumb *e = client->ethumb;
int tw, th, format, aspect, orientation, quality, compress;
float cx, cy;
const char *theme_file, *group, *swallow;
const char *directory, *category;
double video_time, video_start, video_interval;
unsigned int video_ntimes, video_fps, document_page;
EINA_SAFETY_ON_NULL_RETURN(client);
EINA_SAFETY_ON_FALSE_RETURN(client->connected);
msg = edbus_proxy_method_call_new(client->proxy, "ethumb_setup");
main_iter = edbus_message_iter_get(msg);
edbus_message_iter_arguments_append(main_iter, "a{sv}", &array);
/* starting array elements */
variant = _setup_iterator_open(array, &entry, "size", "(ii)");
edbus_message_iter_arguments_append(variant, "(ii)", &sub_struct);
ethumb_thumb_size_get(e, &tw, &th);
edbus_message_iter_arguments_append(sub_struct, "ii", tw, th);
edbus_message_iter_container_close(variant, sub_struct);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "format", "i");
format = ethumb_thumb_format_get(e);
edbus_message_iter_arguments_append(variant, "i", format);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "aspect", "i");
aspect = ethumb_thumb_aspect_get(e);
edbus_message_iter_arguments_append(variant, "i", aspect);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "orientation", "i");
orientation = ethumb_thumb_orientation_get(e);
edbus_message_iter_arguments_append(variant, "i", orientation);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "crop", "(dd)");
edbus_message_iter_arguments_append(variant, "(dd)", &sub_struct);
ethumb_thumb_crop_align_get(e, &cx, &cy);
edbus_message_iter_arguments_append(sub_struct, "dd", (double)cx, (double)cy);
edbus_message_iter_container_close(variant, sub_struct);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "quality", "i");
quality = ethumb_thumb_quality_get(e);
edbus_message_iter_arguments_append(variant, "i", quality);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "compress", "i");
compress = ethumb_thumb_quality_get(e);
edbus_message_iter_arguments_append(variant, "i", compress);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "frame", "(ayayay)");
edbus_message_iter_arguments_append(variant, "(ayayay)", &sub_struct);
ethumb_frame_get(e, &theme_file, &group, &swallow);
_ethumb_client_dbus_append_bytearray(sub_struct, theme_file);
_ethumb_client_dbus_append_bytearray(sub_struct, group);
_ethumb_client_dbus_append_bytearray(sub_struct, swallow);
edbus_message_iter_container_close(variant, sub_struct);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "directory", "ay");
directory = ethumb_thumb_dir_path_get(e);
_ethumb_client_dbus_append_bytearray(variant, directory);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "category", "ay");
category = ethumb_thumb_category_get(e);
_ethumb_client_dbus_append_bytearray(variant, category);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "video_time", "d");
video_time = ethumb_video_time_get(e);
edbus_message_iter_arguments_append(variant, "d", video_time);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "video_start", "d");
video_start = ethumb_video_start_get(e);
edbus_message_iter_arguments_append(variant, "d", video_start);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "video_interval", "d");
video_interval = ethumb_video_interval_get(e);
edbus_message_iter_arguments_append(variant, "d", video_interval);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "video_ntimes", "u");
video_ntimes = ethumb_video_ntimes_get(e);
edbus_message_iter_arguments_append(variant, "u", video_ntimes);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "video_fps", "u");
video_fps = ethumb_video_fps_get(e);
edbus_message_iter_arguments_append(variant, "u", video_fps);
_setup_iterator_close(array, entry, variant);
variant = _setup_iterator_open(array, &entry, "document_page", "u");
document_page = ethumb_document_page_get(e);
edbus_message_iter_arguments_append(variant, "u", document_page);
_setup_iterator_close(array, entry, variant);
edbus_message_iter_container_close(main_iter, array);
edbus_proxy_send(client->proxy, msg, _ethumb_client_ethumb_setup_cb,
client, -1);
edbus_message_unref(msg);
}
/**
* @cond LOCAL
*/
static void
_ethumb_client_generated_cb(void *data, const EDBus_Message *msg)
{
int id = -1;
Ethumb_Client *client = data;
EDBus_Message_Iter *thumb_iter;
EDBus_Message_Iter *thumb_key_iter;
Eina_Bool success;
int found;
struct _ethumb_pending_gen *pending;
Eina_List *l;
if (!edbus_message_arguments_get(msg, "iayayb", &id, &thumb_iter,
&thumb_key_iter, &success))
{
ERR("Error getting data from signal.");
return;
}
found = 0;
l = client->pending_gen;
while (l)
{
pending = l->data;
if (pending->id == id)
{
found = 1;
break;
}
l = l->next;
}
if (found)
{
const char *thumb = _ethumb_client_dbus_get_bytearray(thumb_iter);
const char *thumb_key = _ethumb_client_dbus_get_bytearray(thumb_key_iter);
client->pending_gen = eina_list_remove_list(client->pending_gen, l);
if (pending->generated_cb)
pending->generated_cb(pending->data, client, id,
pending->file, pending->key,
thumb, thumb_key,
success);
if (pending->free_data)
pending->free_data(pending->data);
eina_stringshare_del(pending->file);
eina_stringshare_del(pending->key);
eina_stringshare_del(pending->thumb);
eina_stringshare_del(pending->thumb_key);
eina_stringshare_del(thumb);
eina_stringshare_del(thumb_key);
free(pending);
}
}
static void
_ethumb_client_queue_add_cb(void *data, const EDBus_Message *msg, EDBus_Pending *edbus_pending EINA_UNUSED)
{
const char *errname, *errmsg;
int32_t id;
struct _ethumb_pending_add *pending = data;
struct _ethumb_pending_gen *generating;
Ethumb_Client *client = pending->client;
client->pending_add = eina_list_remove(client->pending_add, pending);
//in case of error or when user cancel
if (edbus_message_error_get(msg, &errname, &errmsg))
{
ERR("Error: %s %s\n", errname, errmsg);
goto end;
}
if (!edbus_message_arguments_get(msg, "i", &id))
{
ERR("Error getting arguments.");
goto end;
}
generating = calloc(1, sizeof(*generating));
generating->id = id;
generating->file = pending->file;
generating->key = pending->key;
generating->thumb = pending->thumb;
generating->thumb_key = pending->thumb_key;
generating->generated_cb = pending->generated_cb;
generating->data = pending->data;
generating->free_data = pending->free_data;
client->pending_gen = eina_list_append(client->pending_gen, generating);
free(pending);
return;
end:
eina_stringshare_del(pending->file);
eina_stringshare_del(pending->key);
eina_stringshare_del(pending->thumb);
eina_stringshare_del(pending->thumb_key);
if (pending->free_data)
pending->free_data(pending->data);
free(pending);
}
static int
_ethumb_client_queue_add(Ethumb_Client *client, const char *file, const char *key, const char *thumb, const char *thumb_key, Ethumb_Client_Generate_Cb generated_cb, const void *data, Eina_Free_Cb free_data)
{
EDBus_Message *msg;
EDBus_Message_Iter *main_itr;
struct _ethumb_pending_add *pending;
pending = calloc(1, sizeof(*pending));
pending->id = client->id_count;
pending->file = eina_stringshare_add(file);
pending->key = eina_stringshare_add(key);
pending->thumb = eina_stringshare_add(thumb);
pending->thumb_key = eina_stringshare_add(thumb_key);
pending->generated_cb = generated_cb;
pending->data = (void *)data;
pending->free_data = free_data;
pending->client = client;
client->id_count = (client->id_count + 1) % MAX_ID;
msg = edbus_proxy_method_call_new(client->proxy, "queue_add");
main_itr = edbus_message_iter_get(msg);
edbus_message_iter_basic_append(main_itr, 'i', pending->id);
_ethumb_client_dbus_append_bytearray(main_itr, file);
_ethumb_client_dbus_append_bytearray(main_itr, key);
_ethumb_client_dbus_append_bytearray(main_itr, thumb);
_ethumb_client_dbus_append_bytearray(main_itr, thumb_key);
pending->pending_call = edbus_proxy_send(client->proxy, msg,
_ethumb_client_queue_add_cb,
pending, -1);
client->pending_add = eina_list_append(client->pending_add, pending);
edbus_message_unref(msg);
return pending->id;
}
static void
_ethumb_client_queue_remove_cb(void *data, const EDBus_Message *msg, EDBus_Pending *edbus_pending EINA_UNUSED)
{
Eina_Bool success;
struct _ethumb_pending_remove *pending = data;
Ethumb_Client *client = pending->client;
const char *errname, *errmsg;
client->pending_remove = eina_list_remove(client->pending_remove, pending);
if (edbus_message_error_get(msg, &errname, &errmsg))
{
ERR("Error: %s %s\n", errname, errmsg);
goto end;
}
if (edbus_message_arguments_get(msg, "b", &success))
{
ERR("Error getting arguments.");
goto end;
}
end:
if (pending->cancel_cb)
pending->cancel_cb(pending->data, success);
if (pending->free_data)
pending->free_data(pending->data);
free(pending);
}
/**
* @endcond
*/
/**
* Ask server to cancel generation of thumbnail.
*
* @param client client instance. Must @b not be @c NULL and client
* must be connected (after connected_cb is called).
* @param id valid id returned by ethumb_client_generate()
* @param cancel_cb function to report cancellation results.
* @param data context argument to give back to @a cancel_cb. May be
* @c NULL.
* @param data context to give back to @a cancel_cb. May be @c
* NULL.
* @param free_data used to release @a data resources after @a
* cancel_cb is called or user calls
* ethumb_client_disconnect().
*/
EAPI void
ethumb_client_generate_cancel(Ethumb_Client *client, int id, Ethumb_Client_Generate_Cancel_Cb cancel_cb, const void *data, Eina_Free_Cb free_data)
{
struct _ethumb_pending_remove *pending;
Eina_List *l;
int found;
int32_t id32 = id;
EINA_SAFETY_ON_NULL_RETURN(client);
EINA_SAFETY_ON_FALSE_RETURN(id >= 0);
pending = calloc(1, sizeof(*pending));
pending->id = id;
pending->cancel_cb = cancel_cb;
pending->data = (void *)data;
pending->free_data = free_data;
pending->client = client;
edbus_proxy_call(client->proxy, "queue_remove",
_ethumb_client_queue_remove_cb, pending, -1, "i", pending->id);
client->pending_remove = eina_list_append(client->pending_remove, pending);
/*
* Check if answer was not received yet cancel it
* callback of queue_add will be called with a error msg
* and data will be freed
*/
found = 0;
l = client->pending_add;
while (l)
{
struct _ethumb_pending_add *pending_add = l->data;
if (pending_add->id != id32)
{
l = l->next;
continue;
}
edbus_pending_cancel(pending_add->pending_call);
found = 1;
break;
}
if (found)
return;
//if already received answer only free memory
l = client->pending_gen;
while (l)
{
struct _ethumb_pending_gen *pending_gen = l->data;
if (pending_gen->id != id32)
{
l = l->next;
continue;
}
client->pending_gen = eina_list_remove_list(client->pending_gen, l);
eina_stringshare_del(pending_gen->file);
eina_stringshare_del(pending_gen->key);
eina_stringshare_del(pending_gen->thumb);
eina_stringshare_del(pending_gen->thumb_key);
if (pending_gen->free_data)
pending_gen->free_data(pending_gen->data);
free(pending_gen);
break;
}
}
/**
* @endcond
*/
/**
* Ask server to cancel generation of all thumbnails.
*
* @param client client instance. Must @b not be @c NULL and client
* must be connected (after connected_cb is called).
*
* @see ethumb_client_generate_cancel()
*/
EAPI void
ethumb_client_generate_cancel_all(Ethumb_Client *client)
{
void *data;
EINA_SAFETY_ON_NULL_RETURN(client);
EINA_LIST_FREE(client->pending_add, data)
{
struct _ethumb_pending_add *pending = data;
edbus_pending_cancel(pending->pending_call);
}
EINA_LIST_FREE(client->pending_gen, data)
{
struct _ethumb_pending_gen *pending = data;
eina_stringshare_del(pending->file);
eina_stringshare_del(pending->key);
eina_stringshare_del(pending->thumb);
eina_stringshare_del(pending->thumb_key);
if (pending->free_data)
pending->free_data(pending->data);
free(pending);
}
edbus_proxy_call(client->proxy, "queue_clear", NULL, NULL, -1, "");
}
/**
* Configure future requests to use FreeDesktop.Org preset.
*
* This is a preset to provide freedesktop.org (fdo) standard
* compliant thumbnails. That is, files are stored as JPEG under
* ~/.thumbnails/SIZE, with size being either normal (128x128) or
* large (256x256).
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param s size identifier, either #ETHUMB_THUMB_NORMAL (0) or
* #ETHUMB_THUMB_LARGE (1).
*
* @see ethumb_client_size_set()
* @see ethumb_client_aspect_set()
* @see ethumb_client_crop_align_set()
* @see ethumb_client_category_set()
* @see ethumb_client_dir_path_set()
*/
EAPI void
ethumb_client_fdo_set(Ethumb_Client *client, Ethumb_Thumb_FDO_Size s)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_thumb_fdo_set(client->ethumb, s);
}
/**
* Configure future request to use custom size.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param tw width, default is 128.
* @param th height, default is 128.
*/
EAPI void
ethumb_client_size_set(Ethumb_Client *client, int tw, int th)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_thumb_size_set(client->ethumb, tw, th);
}
/**
* Retrieve future request to use custom size.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param tw where to return width. May be @c NULL.
* @param th where to return height. May be @c NULL.
*/
EAPI void
ethumb_client_size_get(const Ethumb_Client *client, int *tw, int *th)
{
if (tw) *tw = 0;
if (th) *th = 0;
EINA_SAFETY_ON_NULL_RETURN(client);
ethumb_thumb_size_get(client->ethumb, tw, th);
}
/**
* Configure format to use for future requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param f format identifier to use, either #ETHUMB_THUMB_FDO (0),
* #ETHUMB_THUMB_JPEG (1) or #ETHUMB_THUMB_EET (2). Default is FDO.
*/
EAPI void
ethumb_client_format_set(Ethumb_Client *client, Ethumb_Thumb_Format f)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_thumb_format_set(client->ethumb, f);
}
/**
* Retrieve format to use for future requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
*
* @return format identifier to use, either #ETHUMB_THUMB_FDO (0),
* #ETHUMB_THUMB_JPEG (1) or #ETHUMB_THUMB_EET (2).
*/
EAPI Ethumb_Thumb_Format
ethumb_client_format_get(const Ethumb_Client *client)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(client, 0);
return ethumb_thumb_format_get(client->ethumb);
}
/**
* Configure aspect mode to use.
*
* If aspect is kept (#ETHUMB_THUMB_KEEP_ASPECT), then image will be
* rescaled so the largest dimension is not bigger than it's specified
* size (see ethumb_client_size_get()) and the other dimension is
* resized in the same proportion. Example: size is 256x256, image is
* 1000x500, resulting thumbnail is 256x128.
*
* If aspect is ignored (#ETHUMB_THUMB_IGNORE_ASPECT), then image will
* be distorted to match required thumbnail size. Example: size is
* 256x256, image is 1000x500, resulting thumbnail is 256x256.
*
* If crop is required (#ETHUMB_THUMB_CROP), then image will be
* cropped so the smallest dimension is not bigger than its specified
* size (see ethumb_client_size_get()) and the other dimension will
* overflow, not being visible in the final image. How it will
* overflow is speficied by ethumb_client_crop_align_set()
* alignment. Example: size is 256x256, image is 1000x500, crop
* alignment is 0.5, 0.5, resulting thumbnail is 256x256 with 250
* pixels from left and 250 pixels from right being lost, that is just
* the 500x500 central pixels of image will be considered for scaling.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param a aspect mode identifier, either #ETHUMB_THUMB_KEEP_ASPECT (0),
* #ETHUMB_THUMB_IGNORE_ASPECT (1) or #ETHUMB_THUMB_CROP (2).
*/
EAPI void
ethumb_client_aspect_set(Ethumb_Client *client, Ethumb_Thumb_Aspect a)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_thumb_aspect_set(client->ethumb, a);
}
/**
* Get current aspect in use for requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
*
* @return aspect in use for future requests.
*/
EAPI Ethumb_Thumb_Aspect
ethumb_client_aspect_get(const Ethumb_Client *client)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(client, 0);
return ethumb_thumb_aspect_get(client->ethumb);
}
/**
* Configure orientation to use for future requests.
*
* Default value is #ETHUMB_THUMB_ORIENT_ORIGINAL: metadata from the file
* will be used to orient pixel data.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param o format identifier to use, either #ETHUMB_THUMB_ORIENT_NONE (0),
* #ETHUMB_THUMB_ROTATE_90_CW (1), #ETHUMB_THUMB_ROTATE_180 (2),
* #ETHUMB_THUMB_ROTATE_90_CCW (3), #ETHUMB_THUMB_FLIP_HORIZONTAL (4),
* #ETHUMB_THUMB_FLIP_VERTICAL (5), #ETHUMB_THUMB_FLIP_TRANSPOSE (6),
* #ETHUMB_THUMB_FLIP_TRANSVERSE (7) or #ETHUMB_THUMB_ORIENT_ORIGINAL
* (8). Default is ORIGINAL.
*/
EAPI void
ethumb_client_orientation_set(Ethumb_Client *client, Ethumb_Thumb_Orientation o)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_thumb_orientation_set(client->ethumb, o);
}
/**
* Get current orientation in use for requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
*
* @return orientation in use for future requests.
*/
EAPI Ethumb_Thumb_Orientation
ethumb_client_orientation_get(const Ethumb_Client *client)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(client, 0);
return ethumb_thumb_orientation_get(client->ethumb);
}
/**
* Configure crop alignment in use for future requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param x horizontal alignment. 0.0 means left side will be visible
* or right side is being lost. 1.0 means right side will be
* visible or left side is being lost. 0.5 means just center is
* visible, both sides will be lost. Default is 0.5.
* @param y vertical alignment. 0.0 is top visible, 1.0 is bottom
* visible, 0.5 is center visible. Default is 0.5
*/
EAPI void
ethumb_client_crop_align_set(Ethumb_Client *client, float x, float y)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_thumb_crop_align_set(client->ethumb, x, y);
}
/**
* Get current crop alignment in use for requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param x where to return horizontal alignment. May be @c NULL.
* @param y where to return vertical alignment. May be @c NULL.
*/
EAPI void
ethumb_client_crop_align_get(const Ethumb_Client *client, float *x, float *y)
{
if (x) *x = 0.0;
if (y) *y = 0.0;
EINA_SAFETY_ON_NULL_RETURN(client);
ethumb_thumb_crop_align_get(client->ethumb, x, y);
}
/**
* Configure quality to be used in thumbnails.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param quality value from 0 to 100, default is 80. The effect
* depends on the format being used, PNG will not use it.
*/
EAPI void
ethumb_client_quality_set(Ethumb_Client *client, int quality)
{
EINA_SAFETY_ON_NULL_RETURN(client);
ethumb_thumb_quality_set(client->ethumb, quality);
}
/**
* Get quality to be used in thumbnails.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
*
* @return quality value from 0 to 100, default is 80. The effect
* depends on the format being used, PNG will not use it.
*/
EAPI int
ethumb_client_quality_get(const Ethumb_Client *client)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(client, 0);
return ethumb_thumb_quality_get(client->ethumb);
}
/**
* Configure compression level used in requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param compress value from 0 to 9, default is 9. The effect
* depends on the format being used, JPEG will not use it.
*/
EAPI void
ethumb_client_compress_set(Ethumb_Client *client, int compress)
{
EINA_SAFETY_ON_NULL_RETURN(client);
ethumb_thumb_compress_set(client->ethumb, compress);
}
/**
* Get compression level used in requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
*
* @return compress value from 0 to 9, default is 9. The effect
* depends on the format being used, JPEG will not use it.
*/
EAPI int
ethumb_client_compress_get(const Ethumb_Client *client)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(client, 0);
return ethumb_thumb_compress_get(client->ethumb);
}
/**
* Set frame to apply to future thumbnails.
*
* This will create an edje object that will have image swallowed
* in. This can be used to simulate Polaroid or wood frames in the
* generated image. Remeber it is bad to modify the original contents
* of thumbnails, but sometimes it's useful to have it composited and
* avoid runtime overhead.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param file file path to edje.
* @param group group inside edje to use.
* @param swallow name of swallow part.
*
* @return @c EINA_TRUE on success, @c EINA_FALSE on failure.
*/
EAPI Eina_Bool
ethumb_client_frame_set(Ethumb_Client *client, const char *file, const char *group, const char *swallow)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(client, 0);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
return ethumb_frame_set(client->ethumb, file, group, swallow);
}
/**
* Configure where to store thumbnails in future requests.
*
* This value will be used to generate thumbnail paths, that is, it
* will be used when ethumb_client_thumb_path_set() was not called
* after last ethumb_client_file_set().
*
* Note that this is the base, a category is added to this path as a
* sub directory. This is not the final directory where files are
* stored, the thumbnail system will account @b category as well, see
* ethumb_client_category_set().
*
* As other options, this value will only be applied to future
* requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param path base directory where to store thumbnails. Default is
* ~/.thumbnails
*
* @see ethumb_client_category_set()
*/
EAPI void
ethumb_client_dir_path_set(Ethumb_Client *client, const char *path)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_thumb_dir_path_set(client->ethumb, path);
}
/**
* Get base directory path where to store thumbnails.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
*
* @return pointer to internal string with current path. This string
* should not be modified or freed.
*
* @see ethumb_client_dir_path_set()
*/
EAPI const char *
ethumb_client_dir_path_get(const Ethumb_Client *client)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(client, NULL);
return ethumb_thumb_dir_path_get(client->ethumb);
}
/**
* Category directory to store thumbnails.
*
* This value will be used to generate thumbnail paths, that is, it
* will be used when ethumb_client_thumb_path_set() was not called
* after last ethumb_client_file_set().
*
* This is a sub-directory inside base directory
* (ethumb_client_dir_path_set()) that creates a namespace to avoid
* different options resulting in the same file.
*
* As other options, this value will only be applied to future
* requests.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param category category sub directory to store thumbnail. Default
* is either "normal" or "large" for FDO compliant thumbnails
* or WIDTHxHEIGHT-ASPECT[-FRAMED]-FORMAT. It can be a string
* or @c NULL to use auto generated names.
*
* @see ethumb_client_dir_path_set()
*/
EAPI void
ethumb_client_category_set(Ethumb_Client *client, const char *category)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_thumb_category_set(client->ethumb, category);
}
/**
* Get category sub-directory where to store thumbnails.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
*
* @return pointer to internal string with current path. This string
* should not be modified or freed.
*
* @see ethumb_client_category_set()
*/
EAPI const char *
ethumb_client_category_get(const Ethumb_Client *client)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(client, NULL);
return ethumb_thumb_category_get(client->ethumb);
}
/**
* Set the video time (duration) in seconds.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param t duration (in seconds). Defaults to 3 seconds.
*/
EAPI void
ethumb_client_video_time_set(Ethumb_Client *client, float t)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_video_time_set(client->ethumb, t);
}
/**
* Set initial video position to start thumbnailing, in percentage.
*
* This is useful to avoid thumbnailing the company/producer logo or
* movie opening.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param start initial video positon to thumbnail, in percentage (0.0
* to 1.0, inclusive). Defaults to 10% (0.1).
*/
EAPI void
ethumb_client_video_start_set(Ethumb_Client *client, float start)
{
EINA_SAFETY_ON_NULL_RETURN(client);
EINA_SAFETY_ON_FALSE_RETURN(start >= 0.0);
EINA_SAFETY_ON_FALSE_RETURN(start <= 1.0);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_video_start_set(client->ethumb, start);
}
/**
* Set the video frame interval, in seconds.
*
* This is useful for animated thumbnail and will define skip time
* before going to the next frame. Note that video backends might not
* be able to precisely skip that amount as it will depend on various
* factors, including video encoding.
*
* Although this seems similar to ethumb_client_video_fps_set(), this
* one is the time that will be used to seek. The math is simple, for
* each new frame the video position will be set to:
* ((video_length * start_time) + (interval * current_frame_number)).
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param interval time between frames, in seconds. Defaults to 0.05
* seconds.
*/
EAPI void
ethumb_client_video_interval_set(Ethumb_Client *client, float interval)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_video_interval_set(client->ethumb, interval);
}
/**
* Set the number of frames to thumbnail.
*
* This is useful for animated thumbnail and will define how many
* frames the generated file will have.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param ntimes number of times, must be greater than zero.
* Defaults to 3.
*/
EAPI void
ethumb_client_video_ntimes_set(Ethumb_Client *client, unsigned int ntimes)
{
EINA_SAFETY_ON_NULL_RETURN(client);
EINA_SAFETY_ON_FALSE_RETURN(ntimes > 0);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_video_ntimes_set(client->ethumb, ntimes);
}
/**
* Set the number of frames per second to thumbnail the video.
*
* This configures the number of times per seconds the thumbnail will
* use to create thumbnails.
*
* Although this is similar to ethumb_client_video_interval_set(), it
* is the delay used between calling functions thata generates frames,
* while the other is the time used to skip inside the video.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param fps number of frames per second to thumbnail. Must be greater
* than zero. Defaults to 10.
*/
EAPI void
ethumb_client_video_fps_set(Ethumb_Client *client, unsigned int fps)
{
EINA_SAFETY_ON_NULL_RETURN(client);
EINA_SAFETY_ON_FALSE_RETURN(fps > 0);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_video_fps_set(client->ethumb, fps);
}
/**
* Set the page number to thumbnail in paged documents.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param page page number, defaults to 0 (first).
*/
EAPI void
ethumb_client_document_page_set(Ethumb_Client *client, unsigned int page)
{
EINA_SAFETY_ON_NULL_RETURN(client);
if (!client->old_ethumb_conf)
client->old_ethumb_conf = ethumb_dup(client->ethumb);
ethumb_document_page_set(client->ethumb, page);
}
/**
* Set source file to be thumbnailed.
*
* Calling this function has the side effect of resetting values set
* with ethumb_client_thumb_path_set() or auto-generated with
* ethumb_client_thumb_exists().
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param path the filesystem path to use. May be @c NULL.
* @param key the extra argument/key inside @a path to read image
* from. This is only used for formats that allow multiple
* resources in one file, like EET or Edje (group name).
*
* @return @c EINA_TRUE on success, @c EINA_FALSE on failure.
*/
EAPI Eina_Bool
ethumb_client_file_set(Ethumb_Client *client, const char *path, const char *key)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(client, 0);
return ethumb_file_set(client->ethumb, path, key);
}
/**
* Get values set with ethumb_client_file_get()
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param path where to return configured path. May be @c NULL. If
* not @c NULL, then it will be a pointer to a stringshared
* instance, but @b no references are added (do it with
* eina_stringshare_ref())!
* @param key where to return configured key. May be @c NULL.If not @c
* NULL, then it will be a pointer to a stringshared instance,
* but @b no references are added (do it with
* eina_stringshare_ref())!
*/
EAPI void
ethumb_client_file_get(Ethumb_Client *client, const char **path, const char **key)
{
if (path) *path = NULL;
if (key) *key = NULL;
EINA_SAFETY_ON_NULL_RETURN(client);
ethumb_file_get(client->ethumb, path, key);
}
/**
* Reset previously set file to @c NULL.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
*/
EAPI void
ethumb_client_file_free(Ethumb_Client *client)
{
EINA_SAFETY_ON_NULL_RETURN(client);
ethumb_file_free(client->ethumb);
}
/**
* Set a defined path and key to store the thumbnail.
*
* If not explicitly given, the thumbnail path will be auto-generated
* by ethumb_client_thumb_exists() or server using configured
* parameters like size, aspect and category.
*
* Set these to @c NULL to forget previously given values. After
* ethumb_client_file_set() these values will be reset to @c NULL.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param path force generated thumbnail to the exact given path. If
* @c NULL, then reverts back to auto-generation.
* @param key force generated thumbnail to the exact given key. If
* @c NULL, then reverts back to auto-generation.
*/
EAPI void
ethumb_client_thumb_path_set(Ethumb_Client *client, const char *path, const char *key)
{
EINA_SAFETY_ON_NULL_RETURN(client);
ethumb_thumb_path_set(client->ethumb, path, key);
}
/**
* Get the configured thumbnail path.
*
* This returns the value set with ethumb_client_thumb_path_set() or
* auto-generated by ethumb_client_thumb_exists() if it was not set.
*
* @param client the client instance to use. Must @b not be @c
* NULL. May be pending connected (can be called before @c
* connected_cb)
* @param path where to return configured path. May be @c NULL. If
* there was no path configured with
* ethumb_client_thumb_path_set() and
* ethumb_client_thumb_exists() was not called, then it will
* probably return @c NULL. If not @c NULL, then it will be a
* pointer to a stringshared instance, but @b no references are
* added (do it with eina_stringshare_ref())!
* @param key where to return configured key. May be @c NULL. If
* there was no key configured with
* ethumb_client_thumb_key_set() and
* ethumb_client_thumb_exists() was not called, then it will
* probably return @c NULL. If not @c NULL, then it will be a
* pointer to a stringshared instance, but @b no references are
* added (do it with eina_stringshare_ref())!
*/
EAPI void
ethumb_client_thumb_path_get(Ethumb_Client *client, const char **path, const char **key)
{
if (path) *path = NULL;
if (key) *key = NULL;
EINA_SAFETY_ON_NULL_RETURN(client);
ethumb_thumb_path_get(client->ethumb, path, key);
}
/**
* Checks whenever file already exists (locally!)
*
* This will check locally (not calling server) if thumbnail already
* exists or not, also calculating the thumbnail path. See
* ethumb_client_thumb_path_get(). Path must be configured with
* ethumb_client_file_set() before using it and the last set file will
* be used!
*
* @param client client instance. Must @b not be @c NULL and client
* must be configured with ethumb_client_file_set().
*
* @return @c EINA_TRUE if it exists, @c EINA_FALSE otherwise.
*/
EAPI Ethumb_Exists *
ethumb_client_thumb_exists(Ethumb_Client *client, Ethumb_Client_Thumb_Exists_Cb exists_cb, const void *data)
{
const char *path = NULL;
Ethumb_Async_Exists *async = NULL;
Ethumb_Exists *cb = NULL;
Ecore_Thread *t;
EINA_SAFETY_ON_NULL_RETURN_VAL(client, NULL);
ethumb_file_get(client->ethumb, &path, NULL);
if (!path) goto on_error;
async = eina_hash_find(_exists_request, path);
if (!async)
{
async = malloc(sizeof (Ethumb_Async_Exists));
if (!async) goto on_error;
async->path = eina_stringshare_ref(path);
async->callbacks = NULL;
async->dup = ethumb_dup(client->ethumb);
if (!async->dup) goto on_error;
cb = malloc(sizeof (Ethumb_Exists));
if (!cb) goto on_error;
EINA_REFCOUNT_REF(client);
cb->client = client;
cb->dup = ethumb_dup(client->ethumb);
cb->exists_cb = exists_cb;
cb->data = data;
cb->parent = async;
async->callbacks = eina_list_append(async->callbacks, cb);
/* spawn a thread here */
t = ecore_thread_run(_ethumb_client_exists_heavy,
_ethumb_client_exists_end,
_ethumb_client_exists_end,
async);
if (!t) return NULL;
async->thread = t;
eina_hash_direct_add(_exists_request, async->path, async);
return cb;
}
cb = malloc(sizeof (Ethumb_Exists));
if (!cb)
{
async = NULL;
goto on_error;
}
EINA_REFCOUNT_REF(client);
cb->client = client;
cb->dup = ethumb_dup(client->ethumb);
cb->exists_cb = exists_cb;
cb->data = data;
cb->parent = async;
async->callbacks = eina_list_append(async->callbacks, cb);
return cb;
on_error:
exists_cb((void *)data, client, NULL, EINA_FALSE);
if (async)
{
eina_stringshare_del(async->path);
if (async->dup) ethumb_free(async->dup);
free(async);
}
return NULL;
}
/**
* Cancel an ongoing exists request.
*
* @param exists the request to cancel.
*/
EAPI void
ethumb_client_thumb_exists_cancel(Ethumb_Exists *exists)
{
Ethumb_Async_Exists *async = exists->parent;
async->callbacks = eina_list_remove(async->callbacks, exists);
if (eina_list_count(async->callbacks) <= 0)
ecore_thread_cancel(async->thread);
ethumb_free(exists->dup);
EINA_REFCOUNT_UNREF(exists->client)
_ethumb_client_free(exists->client);
free(exists);
}
/**
* Check if an exists request was cancelled.
*
* @param exists the request to check.
* @result return EINA_TRUE if the request was cancelled.
*/
EAPI Eina_Bool
ethumb_client_thumb_exists_check(Ethumb_Exists *exists)
{
Ethumb_Async_Exists *async = exists->parent;
if (!async) return EINA_TRUE;
if (async->callbacks) return EINA_FALSE;
return ecore_thread_check(async->thread);
}
/**
* Ask server to generate thumbnail.
*
* This process is asynchronous and will report back from main loop
* using @a generated_cb. One can cancel this request by calling
* ethumb_client_generate_cancel() or
* ethumb_client_generate_cancel_all(), but not that request might be
* processed by server already and no generated files will be removed
* if that is the case.
*
* This will not check if file already exists, this should be done by
* explicitly calling ethumb_client_thumb_exists(). That is, this
* function will override any existing thumbnail.
*
* @param client client instance. Must @b not be @c NULL and client
* must be connected (after connected_cb is called).
* @param generated_cb function to report generation results.
* @param data context argument to give back to @a generated_cb. May
* be @c NULL.
* @param data context to give back to @a generate_cb. May be @c
* NULL.
* @param free_data used to release @a data resources after @a
* generated_cb is called or user calls
* ethumb_client_disconnect().
*
* @return identifier or -1 on error. If -1 is returned (error) then
* @a free_data is @b not called!
*
* @see ethumb_client_connect()
* @see ethumb_client_file_set()
* @see ethumb_client_thumb_exists()
* @see ethumb_client_generate_cancel()
* @see ethumb_client_generate_cancel_all()
*/
EAPI int
ethumb_client_generate(Ethumb_Client *client, Ethumb_Client_Generate_Cb generated_cb, const void *data, Eina_Free_Cb free_data)
{
const char *file, *key, *thumb, *thumb_key;
int id;
EINA_SAFETY_ON_NULL_RETURN_VAL(client, -1);
EINA_SAFETY_ON_FALSE_RETURN_VAL(client->connected, -1);
ethumb_file_get(client->ethumb, &file, &key);
if (!file)
{
ERR("no file set.");
return -1;
}
ethumb_thumb_path_get(client->ethumb, &thumb, &thumb_key);
if (client->old_ethumb_conf &&
ethumb_cmp(client->old_ethumb_conf, client->ethumb))
{
ethumb_client_ethumb_setup(client);
ethumb_free(client->old_ethumb_conf);
client->old_ethumb_conf = NULL;
}
id = _ethumb_client_queue_add(client, file, key, thumb, thumb_key,
generated_cb, data, free_data);
return id;
}
struct _Ethumb_Client_Async
{
Ethumb_Exists *exists;
Ethumb_Client *client;
Ethumb *dup;
Ethumb_Client_Async_Done_Cb done;
Ethumb_Client_Async_Error_Cb error;
const void *data;
int id;
};
static Ecore_Idler *idler[2] = { NULL, NULL };
static Eina_List *pending = NULL;
static Eina_List *idle_tasks[2] = { NULL, NULL };
static void
_ethumb_client_async_free(Ethumb_Client_Async *async)
{
EINA_REFCOUNT_UNREF(async->client)
_ethumb_client_free(async->client);
ethumb_free(async->dup);
free(async);
}
static void
_ethumb_client_thumb_finish(void *data,
Ethumb_Client *client, int id,
const char *file EINA_UNUSED, const char *key EINA_UNUSED,
const char *thumb_path, const char *thumb_key,
Eina_Bool success)
{
Ethumb_Client_Async *async = data;
EINA_SAFETY_ON_FALSE_RETURN(async->id == id);
if (success)
{
async->done(client, thumb_path, thumb_key, (void *)async->data);
}
else
{
async->error(client, (void *)async->data);
}
pending = eina_list_remove(pending, async);
_ethumb_client_async_free(async);
}
static Eina_Bool
_ethumb_client_thumb_generate_idler(void *data EINA_UNUSED)
{
Ethumb_Client_Async *async;
Eina_List *l1, *l2;
EINA_LIST_FOREACH_SAFE (idle_tasks[1], l1, l2, async)
{
Ethumb *tmp;
idle_tasks[1] = eina_list_remove_list(idle_tasks[1], l1);
tmp = async->client->ethumb;
async->client->ethumb = async->dup;
async->id = ethumb_client_generate(async->client, _ethumb_client_thumb_finish, async, NULL);
if (async->id == -1)
{
async->error(async->client, (void *)async->data);
async->client->ethumb = tmp;
_ethumb_client_async_free(async);
}
else
{
async->client->ethumb = tmp;
}
pending = eina_list_append(pending, async);
if (ecore_time_get() - ecore_loop_time_get() > ecore_animator_frametime_get() * 0.5)
return EINA_TRUE;
}
idler[1] = NULL;
return EINA_FALSE;
}
static void
_ethumb_client_thumb_exists(void *data, Ethumb_Client *client, Ethumb_Exists *request, Eina_Bool exists)
{
Ethumb_Client_Async *async = data;
if (request == NULL)
return;
EINA_SAFETY_ON_FALSE_RETURN(async->exists == request);
async->exists = NULL;
pending = eina_list_remove(pending, async);
if (exists)
{
const char *thumb_path;
const char *thumb_key;
ethumb_client_thumb_path_get(client, &thumb_path, &thumb_key);
async->done(client, thumb_path, thumb_key, (void *)async->data);
_ethumb_client_async_free(async);
}
else
{
idle_tasks[1] = eina_list_append(idle_tasks[1], async);
if (!idler[1])
idler[1] = ecore_idler_add(_ethumb_client_thumb_generate_idler, NULL);
}
}
static Eina_Bool
_ethumb_client_thumb_exists_idler(void *data EINA_UNUSED)
{
Ethumb_Client_Async *async;
Eina_List *l1, *l2;
EINA_LIST_FOREACH_SAFE (idle_tasks[0], l1, l2, async)
{
Ethumb *tmp;
idle_tasks[0] = eina_list_remove_list(idle_tasks[0], l1);
tmp = async->client->ethumb;
async->client->ethumb = async->dup;
async->exists = ethumb_client_thumb_exists(async->client, _ethumb_client_thumb_exists, async);
if (!async->exists)
{
async->error(async->client, (void *)async->data);
async->client->ethumb = tmp;
_ethumb_client_async_free(async);
continue;
}
async->client->ethumb = tmp;
pending = eina_list_append(pending, async);
if (ecore_time_get() - ecore_loop_time_get() > ecore_animator_frametime_get() * 0.5)
return EINA_TRUE;
}
idler[0] = NULL;
return EINA_FALSE;
}
EAPI Ethumb_Client_Async *
ethumb_client_thumb_async_get(Ethumb_Client *client,
Ethumb_Client_Async_Done_Cb done,
Ethumb_Client_Async_Error_Cb error,
const void *data)
{
Ethumb_Client_Async *async;
EINA_SAFETY_ON_NULL_RETURN_VAL(client, NULL);
async = malloc(sizeof (Ethumb_Client_Async));
if (!async)
{
error(client, (void *)data);
return NULL;
}
EINA_REFCOUNT_REF(client);
async->client = client;
async->dup = ethumb_dup(client->ethumb);
async->done = done;
async->error = error;
async->data = data;
async->exists = NULL;
async->id = -1;
idle_tasks[0] = eina_list_append(idle_tasks[0], async);
if (!idler[0])
idler[0] = ecore_idler_add(_ethumb_client_thumb_exists_idler, NULL);
return async;
}
EAPI void
ethumb_client_thumb_async_cancel(Ethumb_Client *client, Ethumb_Client_Async *request)
{
const char *path;
EINA_SAFETY_ON_NULL_RETURN(client);
EINA_SAFETY_ON_NULL_RETURN(request);
ethumb_file_get(request->dup, &path, NULL);
if (request->exists)
{
ethumb_client_thumb_exists_cancel(request->exists);
request->exists = NULL;
pending = eina_list_remove(pending, request);
}
else if (request->id != -1)
{
Ethumb *tmp = request->client->ethumb;
request->client->ethumb = request->dup;
ethumb_client_generate_cancel(request->client, request->id, NULL, NULL, NULL);
request->client->ethumb = tmp;
pending = eina_list_remove(pending, request);
}
else
{
idle_tasks[0] = eina_list_remove(idle_tasks[0], request);
idle_tasks[1] = eina_list_remove(idle_tasks[1], request);
}
_ethumb_client_async_free(request);
}
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