Added gst-plugins-base-subtitles0.10-0.10.34 for Meego Harmattan 1.2

[mafwsubrenderer] / gst-plugins-base-subtitles0.10 / gst / ffmpegcolorspace / utils.c

diff --git a/gst-plugins-base-subtitles0.10/gst/ffmpegcolorspace/utils.c b/gst-plugins-base-subtitles0.10/gst/ffmpegcolorspace/utils.c
new file mode 100644 (file)
index 0000000..49d86e7
--- /dev/null
+++ b/gst-plugins-base-subtitles0.10/gst/ffmpegcolorspace/utils.c
@@ -0,0 +1,159 @@
+/*
+ * utils for libavcodec
+ * Copyright (c) 2001 Fabrice Bellard.
+ * Copyright (c) 2003 Michel Bardiaux for the av_log API
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/**
+ * @file utils.c
+ * utils.
+ */
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <limits.h>
+
+void *
+av_mallocz (unsigned int size)
+{
+  void *ptr;
+
+  ptr = av_malloc (size);
+  if (!ptr)
+    return NULL;
+  memset (ptr, 0, size);
+  return ptr;
+}
+
+char *
+av_strdup (const char *s)
+{
+  char *ptr;
+  int len;
+
+  len = strlen (s) + 1;
+  ptr = av_malloc (len);
+  if (!ptr)
+    return NULL;
+  memcpy (ptr, s, len);
+  return ptr;
+}
+
+/**
+ * realloc which does nothing if the block is large enough
+ */
+void *
+av_fast_realloc (void *ptr, unsigned int *size, unsigned int min_size)
+{
+  if (min_size < *size)
+    return ptr;
+
+  *size = 17 * min_size / 16 + 32;
+
+  return av_realloc (ptr, *size);
+}
+
+
+static unsigned int last_static = 0;
+static unsigned int allocated_static = 0;
+static void **array_static = NULL;
+
+/**
+ * allocation of static arrays - do not use for normal allocation.
+ */
+void *
+av_mallocz_static (unsigned int size)
+{
+  void *ptr = av_mallocz (size);
+
+  if (ptr) {
+    array_static =
+        av_fast_realloc (array_static, &allocated_static,
+        sizeof (void *) * (last_static + 1));
+    array_static[last_static++] = ptr;
+  }
+
+  return ptr;
+}
+
+/**
+ * free all static arrays and reset pointers to 0.
+ */
+void
+av_free_static (void)
+{
+  while (last_static) {
+    av_freep (&array_static[--last_static]);
+  }
+  av_freep (&array_static);
+}
+
+/**
+ * Frees memory and sets the pointer to NULL.
+ * @param arg pointer to the pointer which should be freed
+ */
+void
+av_freep (void *arg)
+{
+  void **ptr = (void **) arg;
+
+  av_free (*ptr);
+  *ptr = NULL;
+}
+
+void
+avcodec_get_context_defaults (AVCodecContext * s)
+{
+  memset (s, 0, sizeof (AVCodecContext));
+
+  s->frame_rate_base = 1;
+  s->frame_rate = 25;
+}
+
+/**
+ * allocates a AVCodecContext and set it to defaults.
+ * this can be deallocated by simply calling free() 
+ */
+AVCodecContext *
+avcodec_alloc_context (void)
+{
+  AVCodecContext *avctx = av_malloc (sizeof (AVCodecContext));
+
+  if (avctx == NULL)
+    return NULL;
+
+  avcodec_get_context_defaults (avctx);
+
+  return avctx;
+}
+
+/* must be called before any other functions */
+void
+avcodec_init (void)
+{
+  static int inited = 0;
+
+  if (inited != 0)
+    return;
+  inited = 1;
+
+  dsputil_static_init ();
+}