Merge the 5.1 branch into the trunk.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@422 b64f7644-9d1e-0410-96f1-a4d463321fa5

1 files changed, 207 insertions, 0 deletions

diff --git a/libhb/fifo.c b/libhb/fifo.c
new file mode 100644
index 000000000..93e3e162e
--- /dev/null
+++ b/libhb/fifo.c
@@ -0,0 +1,207 @@
+/* $Id: fifo.c,v 1.17 2005/10/15 18:05:03 titer Exp $
+
+   This file is part of the HandBrake source code.
+   Homepage: <http://handbrake.m0k.org/>.
+   It may be used under the terms of the GNU General Public License. */
+
+#include "hb.h"
+
+#ifndef SYS_DARWIN
+#include <malloc.h>
+#endif
+
+hb_buffer_t * hb_buffer_init( int size )
+{
+    hb_buffer_t * b;
+    
+    if( !( b = calloc( sizeof( hb_buffer_t ), 1 ) ) )
+    {
+        hb_log( "out of memory" );
+        return NULL;
+    }
+
+    b->alloc = size;
+    b->size  = size;
+#if defined( SYS_DARWIN ) || defined( SYS_FREEBSD )
+    b->data  = malloc( size );
+#elif defined( SYS_CYGWIN )
+    /* FIXME */
+    b->data  = malloc( size + 17 );
+#else
+    b->data  = memalign( 16, size );
+#endif
+
+    if( !b->data )
+    {
+        hb_log( "out of memory" );
+        free( b );
+        return NULL;
+    }
+    return b;
+}
+
+void hb_buffer_realloc( hb_buffer_t * b, int size )
+{
+    /* No more alignment, but we don't care */
+    b->data  = realloc( b->data, size );
+    b->alloc = size;
+}
+
+void hb_buffer_close( hb_buffer_t ** _b )
+{
+    hb_buffer_t * b = *_b;
+
+    if( b->data )
+    {
+        free( b->data );
+    }
+    free( b );
+
+    *_b = NULL;
+}
+
+/* Fifo */
+struct hb_fifo_s
+{
+    hb_lock_t    * lock;
+    int            capacity;
+    int            size;
+    hb_buffer_t  * first;
+    hb_buffer_t  * last;
+};
+
+hb_fifo_t * hb_fifo_init( int capacity )
+{
+    hb_fifo_t * f;
+    f           = calloc( sizeof( hb_fifo_t ), 1 );
+    f->lock     = hb_lock_init();
+    f->capacity = capacity;
+    return f;
+}
+
+int hb_fifo_size( hb_fifo_t * f )
+{
+    int ret;
+
+    hb_lock( f->lock );
+    ret = f->size;
+    hb_unlock( f->lock );
+
+    return ret;
+}
+
+int hb_fifo_is_full( hb_fifo_t * f )
+{
+    int ret;
+
+    hb_lock( f->lock );
+    ret = ( f->size >= f->capacity );
+    hb_unlock( f->lock );
+
+    return ret;
+}
+
+float hb_fifo_percent_full( hb_fifo_t * f )
+{
+    float ret;
+
+    hb_lock( f->lock );
+    ret = f->size / f->capacity;
+    hb_unlock( f->lock );
+
+    return ret;
+}
+
+hb_buffer_t * hb_fifo_get( hb_fifo_t * f )
+{
+    hb_buffer_t * b;
+
+    hb_lock( f->lock );
+    if( f->size < 1 )
+    {
+        hb_unlock( f->lock );
+        return NULL;
+    }
+    b         = f->first;
+    f->first  = b->next;
+    b->next   = NULL;
+    f->size  -= 1;
+    hb_unlock( f->lock );
+
+    return b;
+}
+
+hb_buffer_t * hb_fifo_see( hb_fifo_t * f )
+{
+    hb_buffer_t * b;
+
+    hb_lock( f->lock );
+    if( f->size < 1 )
+    {
+        hb_unlock( f->lock );
+        return NULL;
+    }
+    b = f->first;
+    hb_unlock( f->lock );
+
+    return b;
+}
+
+hb_buffer_t * hb_fifo_see2( hb_fifo_t * f )
+{
+    hb_buffer_t * b;
+
+    hb_lock( f->lock );
+    if( f->size < 2 )
+    {
+        hb_unlock( f->lock );
+        return NULL;
+    }
+    b = f->first->next;
+    hb_unlock( f->lock );
+
+    return b;
+}
+
+void hb_fifo_push( hb_fifo_t * f, hb_buffer_t * b )
+{
+    if( !b )
+    {
+        return;
+    }
+
+    hb_lock( f->lock );
+    if( f->size > 0 )
+    {
+        f->last->next = b;
+    }
+    else
+    {
+        f->first = b;
+    }
+    f->last  = b;
+    f->size += 1;
+    while( f->last->next )
+    {
+        f->size += 1;
+        f->last  = f->last->next;
+    }
+    hb_unlock( f->lock );
+}
+
+void hb_fifo_close( hb_fifo_t ** _f )
+{
+    hb_fifo_t   * f = *_f;
+    hb_buffer_t * b;
+    
+    hb_log( "fifo_close: trashing %d buffer(s)", hb_fifo_size( f ) );
+    while( ( b = hb_fifo_get( f ) ) )
+    {
+        hb_buffer_close( &b );
+    }
+
+    hb_lock_close( &f->lock );
+    free( f );
+
+    *_f = NULL;
+}