libvpx: Pull from upstream

source/libvpx/tools_common.h

 /*
  *  Copyright (c) 2010 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 TOOLS_COMMON_H_
@@ skipping 85 matching lines @@
   struct VpxRational framerate;
 #if CONFIG_ENCODERS
   y4m_input y4m;
 #endif
 };
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#if defined(__GNUC__)
+#define VPX_NO_RETURN __attribute__((noreturn))
+#else
+#define VPX_NO_RETURN
+#endif
+
 /* Sets a stdio stream into binary mode */
 FILE *set_binary_mode(FILE *stream);
 
-void die(const char *fmt, ...);
-void fatal(const char *fmt, ...);
+void die(const char *fmt, ...) VPX_NO_RETURN;
+void fatal(const char *fmt, ...) VPX_NO_RETURN;
 void warn(const char *fmt, ...);
 
-void die_codec(vpx_codec_ctx_t *ctx, const char *s);
+void die_codec(vpx_codec_ctx_t *ctx, const char *s) VPX_NO_RETURN;
 
 /* The tool including this file must define usage_exit() */
-void usage_exit();
+void usage_exit() VPX_NO_RETURN;
+
+#undef VPX_NO_RETURN
 
 int read_yuv_frame(struct VpxInputContext *input_ctx, vpx_image_t *yuv_frame);
 
 typedef struct VpxInterface {
   const char *const name;
   const uint32_t fourcc;
   vpx_codec_iface_t *(*const codec_interface)();
 } VpxInterface;
 
 int get_vpx_encoder_count();
@@ skipping 12 matching lines @@
 void vpx_img_write(const vpx_image_t *img, FILE *file);
 int vpx_img_read(vpx_image_t *img, FILE *file);
 
 double sse_to_psnr(double samples, double peak, double mse);
 
 #ifdef __cplusplus
 }  /* extern "C" */
 #endif
 
 #endif  // TOOLS_COMMON_H_