libvpx: Add VP9 decoder.

source/libvpx/vp9/common/x86/vp9_idct_x86.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 VP9_COMMON_X86_VP9_IDCT_X86_H_
+#define VP9_COMMON_X86_VP9_IDCT_X86_H_
+
+/* Note:
+ *
+ * This platform is commonly built for runtime CPU detection. If you modify
+ * any of the function mappings present in this file, be sure to also update
+ * them in the function pointer initialization code
+ */
+
+#if HAVE_MMX
+extern prototype_idct(vp9_short_idct4x4llm_1_mmx);
+extern prototype_idct(vp9_short_idct4x4llm_mmx);
+extern prototype_idct_scalar_add(vp9_dc_only_idct_add_mmx);
+
+extern prototype_second_order(vp9_short_inv_walsh4x4_mmx);
+extern prototype_second_order(vp9_short_inv_walsh4x4_1_mmx);
+
+#if !CONFIG_RUNTIME_CPU_DETECT
+#undef  vp9_idct_idct1
+#define vp9_idct_idct1 vp9_short_idct4x4llm_1_mmx
+
+#undef  vp9_idct_idct16
+#define vp9_idct_idct16 vp9_short_idct4x4llm_mmx
+
+#undef  vp9_idct_idct1_scalar_add
+#define vp9_idct_idct1_scalar_add vp9_dc_only_idct_add_mmx
+
+#undef vp9_idct_iwalsh16
+#define vp9_idct_iwalsh16 vp9_short_inv_walsh4x4_mmx
+
+#undef vp9_idct_iwalsh1
+#define vp9_idct_iwalsh1 vp9_short_inv_walsh4x4_1_mmx
+
+#endif
+#endif
+
+#if HAVE_SSE2
+
+extern prototype_second_order(vp9_short_inv_walsh4x4_sse2);
+
+#if !CONFIG_RUNTIME_CPU_DETECT
+
+#undef vp9_idct_iwalsh16
+#define vp9_idct_iwalsh16 vp9_short_inv_walsh4x4_sse2
+
+#endif
+
+#endif
+
+
+
+#endif