preparser.c File Reference

Include dependency graph for preparser.c:

Data Structures
struct	input_preparser_t
struct	task

Functions
static void	RunnableRun (void *)
static struct task *	TaskNew (input_preparser_t *preparser, input_item_t *item, input_item_meta_request_option_t options, const input_preparser_callbacks_t *cbs, void *userdata, void *id, vlc_tick_t timeout)
static void	TaskDelete (struct task *task)
static void	PreparserAddTask (input_preparser_t *preparser, struct task *task)
static void	PreparserRemoveTask (input_preparser_t *preparser, struct task *task)
static void	NotifyPreparseEnded (struct task *task)
static void	OnParserEnded (input_item_t *item, int status, void *task_)
static void	OnParserSubtreeAdded (input_item_t *item, input_item_node_t *subtree, void *task_)
static void	OnArtFetchEnded (input_item_t *item, bool fetched, void *userdata)
static void	Parse (struct task *task, vlc_tick_t deadline)
static void	Fetch (struct task *task)
static void	Interrupt (struct task *task)
input_preparser_t *	input_preparser_New (vlc_object_t *parent)
	This function creates the preparser object and thread. More...
int	input_preparser_Push (input_preparser_t *preparser, input_item_t *item, input_item_meta_request_option_t i_options, const input_preparser_callbacks_t *cbs, void *cbs_userdata, int timeout_ms, void *id)
	This function enqueues the provided item to be preparsed. More...
void	input_preparser_fetcher_Push (input_preparser_t *preparser, input_item_t *item, input_item_meta_request_option_t options, const input_fetcher_callbacks_t *cbs, void *cbs_userdata)
void	input_preparser_Cancel (input_preparser_t *preparser, void *id)
	This function cancel all preparsing requests for a given id. More...
void	input_preparser_Deactivate (input_preparser_t *preparser)
	This function deactivates the preparser. More...
void	input_preparser_Delete (input_preparser_t *preparser)
	This function destroys the preparser object and thread. More...

Variables
static const input_fetcher_callbacks_t	input_fetcher_callbacks

Function Documentation

Fetch()

static void Fetch ( struct task *  task )

static

References task::fetch_ended, task::fetcher, input_preparser_t::fetcher, input_fetcher_callbacks, input_fetcher_Push(), task::item, META_REQUEST_OPTION_FETCH_ANY, task::options, task::preparser, vlc_sem_wait(), and VLC_SUCCESS.

Referenced by RunnableRun().

input_preparser_Cancel()

void input_preparser_Cancel	(	input_preparser_t *	preparser,
		void *	id
	)

This function cancel all preparsing requests for a given id.

Parameters

id	unique id given to input_preparser_Push()

References input_preparser_t::executor, task::id, Interrupt(), input_preparser_t::lock, task::node, NotifyPreparseEnded(), task::preparser, task::runnable, input_preparser_t::submitted_tasks, TaskDelete(), vlc_executor_Cancel(), vlc_list_foreach, vlc_list_remove(), vlc_mutex_lock(), and vlc_mutex_unlock().

Referenced by input_preparser_Deactivate(), input_preparser_Delete(), and libvlc_MetadataCancel().

input_preparser_Deactivate()

void input_preparser_Deactivate

(

input_preparser_t *

preparser

)

This function deactivates the preparser.

All pending requests will be removed, and it will block until the currently running entity has finished (if any).

References input_preparser_t::deactivated, input_preparser_Cancel(), and task::preparser.

Referenced by libvlc_InternalCleanup().

input_preparser_Delete()

void input_preparser_Delete

(

input_preparser_t *

preparser

)

This function destroys the preparser object and thread.

All pending input items will be released.

References input_preparser_t::executor, input_preparser_t::fetcher, input_fetcher_Delete(), input_preparser_Cancel(), task::preparser, and vlc_executor_Delete().

Referenced by libvlc_InternalCleanup().

input_preparser_fetcher_Push()

void input_preparser_fetcher_Push	(	input_preparser_t *	preparser,
		input_item_t *	item,
		input_item_meta_request_option_t	options,
		const input_fetcher_callbacks_t *	cbs,
		void *	cbs_userdata
	)

References task::cbs, input_preparser_t::fetcher, input_fetcher_Push(), task::item, task::options, and task::preparser.

Referenced by libvlc_ArtRequest().

input_preparser_New()

input_preparser_t* input_preparser_New

(

vlc_object_t *

parent

)

This function creates the preparser object and thread.

References input_preparser_t::deactivated, input_preparser_t::default_timeout, input_preparser_t::executor, input_preparser_t::fetcher, input_fetcher_New(), input_preparser_t::lock, msg_Warn, input_preparser_t::owner, task::preparser, input_preparser_t::submitted_tasks, unlikely, var_InheritInteger(), vlc_executor_New(), vlc_list_init(), vlc_mutex_init(), and VLC_TICK_FROM_MS.

Referenced by libvlc_InternalInit().

input_preparser_Push()

int input_preparser_Push	(	input_preparser_t *	preparser,
		input_item_t *	item,
		input_item_meta_request_option_t	i_options,
		const input_preparser_callbacks_t *	cbs,
		void *	cbs_userdata,
		int	timeout,
		void *	id
	)

This function enqueues the provided item to be preparsed.

The input item is retained until the preparsing is done or until the preparser object is deleted.

Parameters

timeout	maximum time allowed to preparse the item. If -1, the default "preparse-timeout" option will be used as a timeout. If 0, it will wait indefinitely. If > 0, the timeout will be used (in milliseconds).
id	unique id provided by the caller. This is can be used to cancel the request with input_preparser_Cancel()

Returns

VLC_SUCCESS if the item was scheduled for preparsing, an error code otherwise If this returns an error, the on_preparse_ended will not be invoked

References input_item_t::b_net, input_item_t::b_preparse_interact, task::cbs, input_preparser_t::deactivated, input_preparser_t::default_timeout, input_preparser_t::executor, input_item_t::i_type, i_type, task::item, ITEM_PREPARSE_SKIPPED, ITEM_TYPE_DIRECTORY, ITEM_TYPE_FILE, ITEM_TYPE_NODE, ITEM_TYPE_PLAYLIST, input_item_t::lock, META_REQUEST_OPTION_DO_INTERACT, META_REQUEST_OPTION_SCOPE_NETWORK, task::preparser, PreparserAddTask(), task::runnable, TaskNew(), task::timeout, VLC_EGENERIC, VLC_ENOMEM, vlc_executor_Submit(), vlc_mutex_lock(), vlc_mutex_unlock(), VLC_SUCCESS, and VLC_TICK_FROM_MS.

Referenced by vlc_MetadataRequest().

Interrupt()

static void Interrupt ( struct task *  task )

static

References task::interrupted, ITEM_PREPARSE_TIMEOUT, task::preparse_ended, task::preparse_status, and vlc_sem_post().

Referenced by input_preparser_Cancel().

NotifyPreparseEnded()

static void NotifyPreparseEnded ( struct task *  task )

static

References task::cbs, task::item, task::preparse_status, and task::userdata.

Referenced by input_preparser_Cancel(), and RunnableRun().

OnArtFetchEnded()

static void OnArtFetchEnded ( input_item_t *  item, bool  fetched, void *  userdata  )

static

References task::fetch_ended, task::item, task::userdata, vlc_sem_post(), and VLC_UNUSED.

OnParserEnded()

static void OnParserEnded ( input_item_t *  item, int  status, void *  task_  )

static

References task::interrupted, task::item, ITEM_PREPARSE_DONE, ITEM_PREPARSE_FAILED, task::preparse_ended, task::preparse_status, vlc_sem_post(), VLC_SUCCESS, and VLC_UNUSED.

Referenced by Parse().

OnParserSubtreeAdded()

static void OnParserSubtreeAdded ( input_item_t *  item, input_item_node_t *  subtree, void *  task_  )

static

References task::cbs, task::item, task::userdata, and VLC_UNUSED.

Referenced by Parse().

Parse()

static void Parse ( struct task *  task, vlc_tick_t  deadline  )

static

References task::cbs, input_item_Parse(), input_item_parser_id_Release(), task::interrupted, task::item, ITEM_PREPARSE_FAILED, ITEM_PREPARSE_TIMEOUT, OnParserEnded(), OnParserSubtreeAdded(), input_preparser_t::owner, task::parser, task::preparse_ended, task::preparse_status, task::preparser, vlc_sem_timedwait(), vlc_sem_wait(), and VLC_TICK_INVALID.

Referenced by RunnableRun().

PreparserAddTask()

static void PreparserAddTask ( input_preparser_t *  preparser, struct task *  task  )

static

References input_preparser_t::lock, task::node, task::preparser, input_preparser_t::submitted_tasks, vlc_list_append(), vlc_mutex_lock(), and vlc_mutex_unlock().

Referenced by input_preparser_Push().

PreparserRemoveTask()

static void PreparserRemoveTask ( input_preparser_t *  preparser, struct task *  task  )

static

References input_preparser_t::lock, task::node, task::preparser, vlc_list_remove(), vlc_mutex_lock(), and vlc_mutex_unlock().

Referenced by RunnableRun().

RunnableRun()

static void RunnableRun ( void *  userdata )

static

References Fetch(), input_item_SetPreparsed(), task::interrupted, task::item, NotifyPreparseEnded(), Parse(), task::preparser, PreparserRemoveTask(), TaskDelete(), task::timeout, task::userdata, vlc_thread_set_name(), VLC_TICK_INVALID, and vlc_tick_now().

Referenced by TaskNew().

TaskDelete()

static void TaskDelete ( struct task *  task )

static

References input_item_Release(), and task::item.

Referenced by input_preparser_Cancel(), and RunnableRun().

TaskNew()

static struct task* TaskNew ( input_preparser_t *  preparser, input_item_t *  item, input_item_meta_request_option_t  options, const input_preparser_callbacks_t *  cbs, void *  userdata, void *  id, vlc_tick_t  timeout  )

static

References task::cbs, task::fetch_ended, task::id, input_item_Hold(), task::interrupted, task::item, ITEM_PREPARSE_SKIPPED, task::options, task::parser, task::preparse_ended, task::preparse_status, task::preparser, vlc_runnable::run, task::runnable, RunnableRun(), task::timeout, vlc_runnable::userdata, task::userdata, and vlc_sem_init().

Referenced by input_preparser_Push().

Variable Documentation

input_fetcher_callbacks

const input_fetcher_callbacks_t input_fetcher_callbacks

static

Initial value:

= {
    .on_art_fetch_ended = OnArtFetchEnded,
}

Referenced by Fetch().