mediacontrol_Exception *exception )
{
(void)a_position;
- vlc_object_t* p_cache;
vout_thread_t* p_vout;
input_thread_t *p_input;
mediacontrol_RGBPicture *p_pic = NULL;
libvlc_exception_init( &ex );
mediacontrol_exception_init( exception );
+
+ p_snapshot = malloc( sizeof( snapshot_t ) );
+ if( ! p_snapshot )
+ {
+ RAISE_NULL( mediacontrol_InternalException, "Cannot allocate snapshot" );
+ }
+
p_input = libvlc_get_input_thread( self->p_media_player, &ex );
if( ! p_input )
{
{
RAISE_NULL( mediacontrol_InternalException, "No video output" );
}
- p_cache = vlc_object_create( p_input, sizeof( vlc_object_t ) );
- if( p_cache == NULL )
- {
- vlc_object_release( p_vout );
- vlc_object_release( p_input );
- RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
- }
- snprintf( path, 255, "object:%p", p_cache );
+
+ /* TODO:
+ vlc_mutex_lock (&lock);
+ mutex_cleanup_push (&lock); // release the mutex in case of cancellation
+
+ while (!foobar)
+ vlc_cond_wait (&wait, &lock);
+
+ --- foobar is now true, do something about it here --
+
+ vlc_cleanup_run (); // release the mutex
+ */
+
+ snprintf( path, 255, "object:%p", p_snapshot );
var_SetString( p_vout, "snapshot-path", path );
var_SetString( p_vout, "snapshot-format", "png" );
- vlc_object_lock( p_cache );
+ vlc_mutex_init( &p_snapshot->p_mutex );
+ vlc_cond_init( &p_snapshot->p_condvar );
+
+ vlc_mutex_lock( &p_snapshot->p_mutex );
+ mutex_cleanup_push( &p_snapshot->p_mutex );
+
+ /* Use p_snapshot address as sentinel against spurious vlc_object_wait wakeups.
+
+ If a legitimate wakeup occurs, then p_snapshot->p_data will hold either
+ NULL (in case of error) or a pointer to valid data. */
+ p_snapshot->p_data = ( char* )p_snapshot;
+
vout_Control( p_vout, VOUT_SNAPSHOT );
+ while ( p_snapshot->p_data == ( char* )p_snapshot )
+ {
+ vlc_cond_wait( &p_snapshot->p_condvar, &p_snapshot->p_mutex );
+ }
+ vlc_cleanup_pop();
+
vlc_object_release( p_vout );
- p_snapshot = ( snapshot_t* ) p_cache->p_private;
- vlc_object_unlock( p_cache );
- vlc_object_release( p_cache );
+ vlc_mutex_unlock( &p_snapshot->p_mutex );
+ vlc_cond_destroy( &p_snapshot->p_condvar );
+ vlc_mutex_destroy( &p_snapshot->p_mutex );
- if( p_snapshot )
+ if( p_snapshot->p_data )
{
/* Note: p_snapshot->p_data is directly used, not copied. Thus
do not free it here. */
*/
if( b_embedded_snapshot )
{
- vlc_object_t* p_dest = p_obj;
block_t *p_block;
- snapshot_t *p_snapshot;
+ snapshot_t *p_snapshot = p_obj;
size_t i_size;
- vlc_object_lock( p_dest );
- p_dest->p_private = NULL;
+ vlc_mutex_lock( &p_snapshot->p_mutex );
+ p_snapshot->p_data = NULL;
/* Save the snapshot to a memory zone */
p_block = image_Write( p_image, p_pic, &fmt_in, &fmt_out );
{
msg_Err( p_vout, "Could not get snapshot" );
image_HandlerDelete( p_image );
- vlc_object_signal_unlocked( p_dest );
- vlc_object_unlock( p_dest );
+ vlc_cond_signal( &p_snapshot->p_condvar );
+ vlc_mutex_unlock( &p_snapshot->p_mutex );
return VLC_EGENERIC;
}
- /* Copy the p_block data to a snapshot structure */
- /* FIXME: get the timestamp */
- p_snapshot = malloc( sizeof( snapshot_t ) );
- if( !p_snapshot )
- {
- block_Release( p_block );
- image_HandlerDelete( p_image );
- vlc_object_signal_unlocked( p_dest );
- vlc_object_unlock( p_dest );
- return VLC_ENOMEM;
- }
-
i_size = p_block->i_buffer;
p_snapshot->i_width = fmt_out.i_width;
if( !p_snapshot->p_data )
{
block_Release( p_block );
- free( p_snapshot );
image_HandlerDelete( p_image );
- vlc_object_signal_unlocked( p_dest );
- vlc_object_unlock( p_dest );
+ vlc_cond_signal( &p_snapshot->p_condvar );
+ vlc_mutex_unlock( &p_snapshot->p_mutex );
return VLC_ENOMEM;
}
memcpy( p_snapshot->p_data, p_block->p_buffer, p_block->i_buffer );
- p_dest->p_private = p_snapshot;
-
block_Release( p_block );
/* Unlock the object */
- vlc_object_signal_unlocked( p_dest );
- vlc_object_unlock( p_dest );
+ vlc_cond_signal( &p_snapshot->p_condvar );
+ vlc_mutex_unlock( &p_snapshot->p_mutex );
image_HandlerDelete( p_image );
return VLC_SUCCESS;