#include "mlt_producer.h"
#include "mlt_frame.h"
#include "mlt_profile.h"
+#include "mlt_log.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/time.h>
+/** Define this if you want an automatic deinterlace (if necessary) when the
+ * consumer's producer is not running at normal speed.
+ */
#undef DEINTERLACE_ON_NOT_NORMAL_SPEED
static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
static void mlt_consumer_property_changed( mlt_service owner, mlt_consumer this, char *name );
static void apply_profile_properties( mlt_consumer this, mlt_profile profile, mlt_properties properties );
+/** Initialize a consumer service.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this the consumer to initialize
+ * \param child a pointer to the object for the subclass
+ * \param profile the \p mlt_profile_s to use (optional but recommended,
+ * uses the environment variable MLT if this is NULL)
+ * \return true if there was an error
+ */
+
int mlt_consumer_init( mlt_consumer this, void *child, mlt_profile profile )
{
int error = 0;
return error;
}
+/** Convert the profile into properties on the consumer.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param this a consumer
+ * \param profile a profile
+ * \param properties a properties list (typically, the consumer's)
+ */
+
static void apply_profile_properties( mlt_consumer this, mlt_profile profile, mlt_properties properties )
{
mlt_event_block( this->event_listener );
mlt_event_unblock( this->event_listener );
}
+/** The property-changed event listener
+ *
+ * \private \memberof mlt_consumer_s
+ * \param owner the service a service (ignored)
+ * \param this the consumer
+ * \param name the name of the property that changed
+ */
+
static void mlt_consumer_property_changed( mlt_service owner, mlt_consumer this, char *name )
{
if ( !strcmp( name, "profile" ) )
}
}
+/** The transmitter for the consumer-frame-show event
+ *
+ * Invokes the listener.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param listener a function pointer that will be invoked
+ * \param owner a properties list that will be passed to \p listener
+ * \param this a service that will be passed to \p listener
+ * \param args an array of pointers - the first entry is passed as a string to \p listener
+ */
+
static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
{
if ( listener != NULL )
listener( owner, this, ( mlt_frame )args[ 0 ] );
}
+/** The transmitter for the consumer-frame-render event
+ *
+ * Invokes the listener.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param listener a function pointer that will be invoked
+ * \param owner a properties list that will be passed to \p listener
+ * \param this a service that will be passed to \p listener
+ * \param args an array of pointers - the first entry is passed as a string to \p listener
+ */
+
static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
{
if ( listener != NULL )
}
/** Create a new consumer.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param profile a profile (optional, but recommended)
+ * \return a new consumer
+ */
mlt_consumer mlt_consumer_new( mlt_profile profile )
{
}
/** Get the parent service object.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ * \return the parent service class
+ * \see MLT_CONSUMER_SERVICE
+ */
mlt_service mlt_consumer_service( mlt_consumer this )
{
}
/** Get the consumer properties.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ * \return the consumer's properties list
+ * \see MLT_CONSUMER_PROPERTIES
+ */
mlt_properties mlt_consumer_properties( mlt_consumer this )
{
}
/** Connect the consumer to the producer.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ * \param producer a producer
+ * \return > 0 warning, == 0 success, < 0 serious error,
+ * 1 = this service does not accept input,
+ * 2 = the producer is invalid,
+ * 3 = the producer is already registered with this consumer
+ */
int mlt_consumer_connect( mlt_consumer this, mlt_service producer )
{
}
/** Start the consumer.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ * \return true if there was an error
+ */
int mlt_consumer_start( mlt_consumer this )
{
return 0;
}
-/** An alternative method to feed frames into the consumer - only valid if
- the consumer itself is not connected.
-*/
+/** An alternative method to feed frames into the consumer.
+ *
+ * Only valid if the consumer itself is not connected.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ * \param frame a frame
+ * \return true (ignore this for now)
+ */
int mlt_consumer_put_frame( mlt_consumer this, mlt_frame frame )
{
}
/** Protected method for consumer to get frames from connected service
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ * \return a frame
+ */
mlt_frame mlt_consumer_get_frame( mlt_consumer this )
{
return frame;
}
+/** Compute the time difference between now and a time value.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param time1 a time value to be compared against now
+ * \return the difference in microseconds
+ */
+
static inline long time_difference( struct timeval *time1 )
{
struct timeval time2;
return time1->tv_sec * 1000000 + time1->tv_usec - time2.tv_sec * 1000000 - time2.tv_usec;
}
+/** The thread procedure for asynchronously pulling frames through the service
+ * network connected to a consumer.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param arg a consumer
+ */
+
static void *consumer_read_ahead_thread( void *arg )
{
// The argument is the consumer
return NULL;
}
+/** Start the read/render thread.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param this a consumer
+ */
+
static void consumer_read_ahead_start( mlt_consumer this )
{
// We're running now
}
}
+/** Stop the read/render thread.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param this a consumer
+ */
+
static void consumer_read_ahead_stop( mlt_consumer this )
{
// Make sure we're running
}
}
+/** Flush the read/render thread's buffer.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ */
+
void mlt_consumer_purge( mlt_consumer this )
{
if ( this->ahead )
}
}
+/** Get the next frame from the producer connected to a consumer.
+ *
+ * Typically, one uses this instead of \p mlt_consumer_get_frame to make
+ * the asynchronous/real-time behavior configurable at runtime.
+ * You should close the frame returned from this when you are done with it.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ * \return a frame
+ */
+
mlt_frame mlt_consumer_rt_frame( mlt_consumer this )
{
// Frame to return
}
/** Callback for the implementation to indicate a stopped condition.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ */
void mlt_consumer_stopped( mlt_consumer this )
{
}
/** Stop the consumer.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ * \return true if there was an error
+ */
int mlt_consumer_stop( mlt_consumer this )
{
// Get the properies
mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- char *debug = mlt_properties_get( MLT_CONSUMER_PROPERTIES( this ), "debug" );
// Just in case...
- if ( debug ) fprintf( stderr, "%s: stopping put waiting\n", debug );
+ mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_DEBUG, "stopping put waiting\n" );
pthread_mutex_lock( &this->put_mutex );
this->put_active = 0;
pthread_cond_broadcast( &this->put_cond );
pthread_mutex_unlock( &this->put_mutex );
// Stop the consumer
- if ( debug ) fprintf( stderr, "%s: stopping consumer\n", debug );
+ mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_DEBUG, "stopping consumer\n" );
if ( this->stop != NULL )
this->stop( this );
// Check if the user has requested real time or not and stop if necessary
- if ( debug ) fprintf( stderr, "%s: stopping read_ahead\n", debug );
+ mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_DEBUG, "stopping read_ahead\n" );
if ( mlt_properties_get_int( properties, "real_time" ) )
consumer_read_ahead_stop( this );
if ( mlt_properties_get( properties, "post" ) )
system( mlt_properties_get( properties, "post" ) );
- if ( debug ) fprintf( stderr, "%s: stopped\n", debug );
+ mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_DEBUG, "stopped\n" );
return 0;
}
/** Determine if the consumer is stopped.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ * \return true if the consumer is stopped
+ */
int mlt_consumer_is_stopped( mlt_consumer this )
{
return 0;
}
-/** Close the consumer.
-*/
+/** Close and destroy the consumer.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param this a consumer
+ */
void mlt_consumer_close( mlt_consumer this )
{
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