vpxenc: Add vpxenc.h and move/rename the global_config struct

- Rename the struct to VpxEncoderConfig.
- The idea behind this is to enable checking the global settings against
  stream specific settings in source files other than vpxenc.c.

Change-Id: Ic736cbb714845b9466acb34671780d65b83ad1a8
diff --git a/vpxenc.h b/vpxenc.h
new file mode 100644
index 0000000..5cb3f85
--- /dev/null
+++ b/vpxenc.h
@@ -0,0 +1,45 @@
+/*
+ *  Copyright (c) 2013 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#ifndef VPXENC_H_
+#define VPXENC_H_
+
+#include "vpx/vpx_encoder.h"
+
+enum TestDecodeFatality {
+  TEST_DECODE_OFF,
+  TEST_DECODE_FATAL,
+  TEST_DECODE_WARN,
+};
+
+/* Configuration elements common to all streams. */
+struct VpxEncoderConfig {
+  const struct codec_item *codec;
+  int passes;
+  int pass;
+  int usage;
+  int deadline;
+  int use_i420;
+  int quiet;
+  int verbose;
+  int limit;
+  int skip_frames;
+  int show_psnr;
+  enum TestDecodeFatality test_decode;
+  int have_framerate;
+  struct vpx_rational framerate;
+  int out_part;
+  int debug;
+  int show_q_hist_buckets;
+  int show_rate_hist_buckets;
+  int disable_warnings;
+  int disable_warning_prompt;
+};
+
+#endif  // VPXENC_H_