libvpx: Add VP9 decoder.

source/libvpx/vp9/encoder/x86/vp9_x86_csystemdependent.c

+/*
+ *  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.
+ */
+
+
+#include "vpx_ports/config.h"
+#include "vpx_ports/x86.h"
+#include "vp9/encoder/vp9_variance.h"
+#include "vp9/encoder/vp9_onyx_int.h"
+#include "vp9/encoder/x86/vp9_dct_mmx.h"
+
+// TODO(jimbankoski) Consider rewriting the c to take the same values rather
+// than going through these pointer conversions
+#if HAVE_MMX
+void vp9_short_fdct8x4_mmx(short *input, short *output, int pitch) {
+  vp9_short_fdct4x4_mmx(input,   output,    pitch);
+  vp9_short_fdct4x4_mmx(input + 4, output + 16, pitch);
+}
+
+int vp9_mbblock_error_mmx_impl(short *coeff_ptr, short *dcoef_ptr, int dc);
+int vp9_mbblock_error_mmx(MACROBLOCK *mb, int dc) {
+  short *coeff_ptr =  mb->block[0].coeff;
+  short *dcoef_ptr =  mb->e_mbd.block[0].dqcoeff;
+  return vp9_mbblock_error_mmx_impl(coeff_ptr, dcoef_ptr, dc);
+}
+
+int vp9_mbuverror_mmx_impl(short *s_ptr, short *d_ptr);
+int vp9_mbuverror_mmx(MACROBLOCK *mb) {
+  short *s_ptr = &mb->coeff[256];
+  short *d_ptr = &mb->e_mbd.dqcoeff[256];
+  return vp9_mbuverror_mmx_impl(s_ptr, d_ptr);
+}
+
+void vp9_subtract_b_mmx_impl(unsigned char *z,  int src_stride,
+                             short *diff, unsigned char *predictor,
+                             int pitch);
+void vp9_subtract_b_mmx(BLOCK *be, BLOCKD *bd, int pitch) {
+  unsigned char *z = *(be->base_src) + be->src;
+  unsigned int  src_stride = be->src_stride;
+  short *diff = &be->src_diff[0];
+  unsigned char *predictor = &bd->predictor[0];
+  vp9_subtract_b_mmx_impl(z, src_stride, diff, predictor, pitch);
+}
+
+#endif
+
+#if HAVE_SSE2
+int vp9_mbblock_error_xmm_impl(short *coeff_ptr, short *dcoef_ptr, int dc);
+int vp9_mbblock_error_xmm(MACROBLOCK *mb, int dc) {
+  short *coeff_ptr =  mb->block[0].coeff;
+  short *dcoef_ptr =  mb->e_mbd.block[0].dqcoeff;
+  return vp9_mbblock_error_xmm_impl(coeff_ptr, dcoef_ptr, dc);
+}
+
+int vp9_mbuverror_xmm_impl(short *s_ptr, short *d_ptr);
+int vp9_mbuverror_xmm(MACROBLOCK *mb) {
+  short *s_ptr = &mb->coeff[256];
+  short *d_ptr = &mb->e_mbd.dqcoeff[256];
+  return vp9_mbuverror_xmm_impl(s_ptr, d_ptr);
+}
+
+void vp9_subtract_b_sse2_impl(unsigned char *z,  int src_stride,
+                              short *diff, unsigned char *predictor,
+                              int pitch);
+void vp9_subtract_b_sse2(BLOCK *be, BLOCKD *bd, int pitch) {
+  unsigned char *z = *(be->base_src) + be->src;
+  unsigned int  src_stride = be->src_stride;
+  short *diff = &be->src_diff[0];
+  unsigned char *predictor = &bd->predictor[0];
+  vp9_subtract_b_sse2_impl(z, src_stride, diff, predictor, pitch);
+}
+
+#endif