1 files changed, 195 insertions, 0 deletions
diff --git a/tests/internal/codec.c b/tests/internal/codec.c
new file mode 100644
index 00000000..d14981ac
--- /dev/null
+++ b/tests/internal/codec.c
@@ -0,0 +1,195 @@
+/*
+ *  codec.c - Codec utilities for the tests
+ *
+ *  Copyright (C) 2013 Intel Corporation
+ *    Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
+ *
+ *  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 2.1
+ *  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., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301 USA
+ */
+
+#include "gst/vaapi/sysdeps.h"
+#include <gst/vaapi/gstvaapidisplay.h>
+#include "codec.h"
+
+typedef struct
+{
+  const gchar *codec_str;
+  GstVaapiCodec codec;
+  const gchar *caps_str;
+} CodecMap;
+
+static const CodecMap g_codec_map[] = {
+  {"h264", GST_VAAPI_CODEC_H264,
+      "video/x-h264"},
+  {"jpeg", GST_VAAPI_CODEC_JPEG,
+      "image/jpeg"},
+  {"mpeg2", GST_VAAPI_CODEC_MPEG2,
+      "video/mpeg, mpegversion=2"},
+  {"mpeg4", GST_VAAPI_CODEC_MPEG4,
+      "video/mpeg, mpegversion=4"},
+  {"wmv3", GST_VAAPI_CODEC_VC1,
+      "video/x-wmv, wmvversion=3"},
+  {"vc1", GST_VAAPI_CODEC_VC1,
+      "video/x-wmv, wmvversion=3, format=(string)WVC1"},
+  {NULL,}
+};
+
+static const CodecMap *
+get_codec_map (GstVaapiCodec codec)
+{
+  const CodecMap *m;
+
+  if (codec) {
+    for (m = g_codec_map; m->codec_str != NULL; m++) {
+      if (m->codec == codec)
+        return m;
+    }
+  }
+  return NULL;
+}
+
+const gchar *
+string_from_codec (GstVaapiCodec codec)
+{
+  const CodecMap *const m = get_codec_map (codec);
+
+  return m ? m->codec_str : NULL;
+}
+
+GstCaps *
+caps_from_codec (GstVaapiCodec codec)
+{
+  const CodecMap *const m = get_codec_map (codec);
+
+  return m ? gst_caps_from_string (m->caps_str) : NULL;
+}
+
+GstVaapiCodec
+identify_codec_from_string (const gchar * codec_str)
+{
+  const CodecMap *m;
+
+  if (codec_str) {
+    for (m = g_codec_map; m->codec_str != NULL; m++) {
+      if (g_ascii_strcasecmp (m->codec_str, codec_str) == 0)
+        return m->codec;
+    }
+  }
+  return 0;
+}
+
+typedef struct
+{
+  GMappedFile *file;
+  guint8 *data;
+  guint size;
+  guint probability;
+  GstCaps *caps;
+  GstTypeFind type_find;
+} CodecIdentifier;
+
+static const guint8 *
+codec_identifier_peek (gpointer data, gint64 offset, guint size)
+{
+  CodecIdentifier *const cip = data;
+
+  if (offset >= 0 && offset + size <= cip->size)
+    return cip->data + offset;
+  if (offset < 0 && ((gint) cip->size + offset) >= 0)
+    return &cip->data[cip->size + offset];
+  return NULL;
+}
+
+static void
+codec_identifier_suggest (gpointer data, guint probability, GstCaps * caps)
+{
+  CodecIdentifier *const cip = data;
+
+  if (cip->probability < probability) {
+    cip->probability = probability;
+    gst_caps_replace (&cip->caps, caps);
+  }
+}
+
+static void
+codec_identifier_free (CodecIdentifier * cip)
+{
+  if (!cip)
+    return;
+
+  if (cip->file) {
+    g_mapped_file_unref (cip->file);
+    cip->file = NULL;
+  }
+  gst_caps_replace (&cip->caps, NULL);
+  g_slice_free (CodecIdentifier, cip);
+}
+
+static CodecIdentifier *
+codec_identifier_new (const gchar * filename)
+{
+  CodecIdentifier *cip;
+  GstTypeFind *tfp;
+
+  cip = g_slice_new0 (CodecIdentifier);
+  if (!cip)
+    return NULL;
+
+  cip->file = g_mapped_file_new (filename, FALSE, NULL);
+  if (!cip->file)
+    goto error;
+
+  cip->size = g_mapped_file_get_length (cip->file);
+  cip->data = (guint8 *) g_mapped_file_get_contents (cip->file);
+  if (!cip->data)
+    goto error;
+
+  tfp = &cip->type_find;
+  tfp->peek = codec_identifier_peek;
+  tfp->suggest = codec_identifier_suggest;
+  tfp->data = cip;
+  return cip;
+
+error:
+  codec_identifier_free (cip);
+  return NULL;
+}
+
+GstVaapiCodec
+identify_codec (const gchar * filename)
+{
+  CodecIdentifier *cip;
+  GList *type_list, *l;
+  guint32 codec = 0;
+
+  cip = codec_identifier_new (filename);
+  if (!cip)
+    return 0;
+
+  type_list = gst_type_find_factory_get_list ();
+  for (l = type_list; l != NULL; l = l->next) {
+    GstTypeFindFactory *const factory = GST_TYPE_FIND_FACTORY (l->data);
+    gst_type_find_factory_call_function (factory, &cip->type_find);
+  }
+  g_list_free (type_list);
+
+  if (cip->probability >= GST_TYPE_FIND_LIKELY)
+    codec =
+        gst_vaapi_profile_get_codec (gst_vaapi_profile_from_caps (cip->caps));
+
+  codec_identifier_free (cip);
+  return codec;
+}