mlt_slices_s Struct Reference

Public Member Functions
int	mlt_slices_count_fifo ()
	Get the number of slices for the fifo scheduling policy. More...
int	mlt_slices_count_normal ()
	Get the number of slices for the normal scheduling policy. More...
int	mlt_slices_count_rr ()
	Get the number of slices for the round robin scheduling policy. More...
int	mlt_slices_size_slice (int jobs, int index, int input_size, int *start)
	Compute size of a slice. More...

Data Fields
pthread_mutex_t	cond_mutex
pthread_cond_t	cond_var_job
pthread_cond_t	cond_var_ready
int	count
int	f_exit
struct mlt_slices_runtime_s *	head
const char *	name
int	readys
int	ref
struct mlt_slices_runtime_s *	tail
pthread_t	threads [MAX_SLICES]

Private Member Functions
static void	mlt_slices_close (mlt_slices ctx)
	Destroy sliced threading context. More...
static mlt_slices	mlt_slices_get_global (mlt_schedule_policy policy)
	Get a global shared sliced threading context. More...
static mlt_slices	mlt_slices_init (int threads, int policy, int priority)
	Initialize a sliced threading context. More...
static void	mlt_slices_run (mlt_slices ctx, int jobs, mlt_slices_proc proc, void *cookie)
	Run sliced execution. More...

Member Function Documentation

mlt_slices_close()

static void mlt_slices_close ( mlt_slices  ctx )

private

Destroy sliced threading context.

Parameters

ctx	context pointer

mlt_slices_count_fifo()

int mlt_slices_count_fifo

(

)

Get the number of slices for the fifo scheduling policy.

Returns

the number of slices

mlt_slices_count_normal()

int mlt_slices_count_normal

(

)

Get the number of slices for the normal scheduling policy.

Returns

the number of slices

mlt_slices_count_rr()

int mlt_slices_count_rr

(

)

Get the number of slices for the round robin scheduling policy.

Returns

the number of slices

mlt_slices_get_global()

static mlt_slices mlt_slices_get_global ( mlt_schedule_policy  policy )

private

Get a global shared sliced threading context.

There are separate contexts for each scheduling policy.

Parameters

policy

the thread scheduling policy needed

Returns

the context pointer

mlt_slices_init()

static mlt_slices mlt_slices_init ( int  threads, int  policy, int  priority  )

private

Initialize a sliced threading context.

Parameters

threads	number of threads to use for job list, 0 for #cpus
policy	scheduling policy of processing threads, -1 for normal
priority	priority value that can be used with the scheduling algorithm, -1 for maximum

Returns

the context pointer

mlt_slices_run()

static void mlt_slices_run ( mlt_slices  ctx, int  jobs, mlt_slices_proc  proc, void *  cookie  )

private

Run sliced execution.

Parameters

ctx	context pointer
jobs	number of jobs to process
proc	a pointer to the function that will be called
cookie	an opaque data pointer passed to proc

mlt_slices_size_slice()

int mlt_slices_size_slice	(	int	jobs,
		int	index,
		int	input_size,
		int *	start
	)

Compute size of a slice.

This a helper function for use in a mlt_slices_proc() to get the number of pixels over which to operate.

Parameters

	jobs	the number of slices
	index	the zero-based index of the current slice
	input_size	the size of a dimension, usually in pixel units, for example height
[out]	start	the optional starting unit for this slice

Returns

the size of the slice, typically in pixel units

Field Documentation

cond_mutex

pthread_mutex_t mlt_slices_s::cond_mutex

cond_var_job

pthread_cond_t mlt_slices_s::cond_var_job

cond_var_ready

pthread_cond_t mlt_slices_s::cond_var_ready

count

int mlt_slices_s::count

f_exit

int mlt_slices_s::f_exit

head

struct mlt_slices_runtime_s* mlt_slices_s::head

name

const char* mlt_slices_s::name

readys

int mlt_slices_s::readys

ref

int mlt_slices_s::ref

tail

struct mlt_slices_runtime_s * mlt_slices_s::tail

threads

pthread_t mlt_slices_s::threads[MAX_SLICES]

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The documentation for this struct was generated from the following file:

• mlt_slices.c