libvpx: Add VP9 decoder.

source/libvpx/vp9/decoder/vp9_idct_blk.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 "vp9_rtcd.h"
+#include "vp9/common/vp9_blockd.h"
+#if CONFIG_LOSSLESS
+#include "vp9/decoder/vp9_dequantize.h"
+#endif
+
+void vp9_dequant_dc_idct_add_y_block_c(short *q, const short *dq,
+                                       unsigned char *pre,
+                                       unsigned char *dst,
+                                       int stride, unsigned short *eobs,
+                                       const short *dc) {
+  int i, j;
+
+  for (i = 0; i < 4; i++) {
+    for (j = 0; j < 4; j++) {
+      if (*eobs++ > 1)
+        vp9_dequant_dc_idct_add_c(q, dq, pre, dst, 16, stride, dc[0]);
+      else
+        vp9_dc_only_idct_add_c(dc[0], pre, dst, 16, stride);
+
+      q   += 16;
+      pre += 4;
+      dst += 4;
+      dc++;
+    }
+
+    pre += 64 - 16;
+    dst += 4 * stride - 16;
+  }
+}
+
+#if CONFIG_SUPERBLOCKS
+void vp9_dequant_dc_idct_add_y_block_4x4_inplace_c(short *q, const short *dq,
+                                                   unsigned char *dst,
+                                                   int stride,
+                                                   unsigned short *eobs,
+                                                   const short *dc,
+                                                   MACROBLOCKD *xd) {
+  int i, j;
+
+  for (i = 0; i < 4; i++) {
+    for (j = 0; j < 4; j++) {
+      if (*eobs++ > 1)
+        vp9_dequant_dc_idct_add_c(q, dq, dst, dst, stride, stride, dc[0]);
+      else
+        vp9_dc_only_idct_add_c(dc[0], dst, dst, stride, stride);
+
+      q   += 16;
+      dst += 4;
+      dc++;
+    }
+
+    dst += 4 * stride - 16;
+  }
+}
+#endif
+
+void vp9_dequant_idct_add_y_block_c(short *q, const short *dq,
+                                    unsigned char *pre,
+                                    unsigned char *dst,
+                                    int stride, unsigned short *eobs) {
+  int i, j;
+
+  for (i = 0; i < 4; i++) {
+    for (j = 0; j < 4; j++) {
+      if (*eobs++ > 1)
+        vp9_dequant_idct_add_c(q, dq, pre, dst, 16, stride);
+      else {
+        vp9_dc_only_idct_add_c(q[0]*dq[0], pre, dst, 16, stride);
+        ((int *)q)[0] = 0;
+      }
+
+      q   += 16;
+      pre += 4;
+      dst += 4;
+    }
+
+    pre += 64 - 16;
+    dst += 4 * stride - 16;
+  }
+}
+
+void vp9_dequant_idct_add_uv_block_c(short *q, const short *dq,
+                                     unsigned char *pre, unsigned char *dstu,
+                                     unsigned char *dstv, int stride,
+                                     unsigned short *eobs) {
+  int i, j;
+
+  for (i = 0; i < 2; i++) {
+    for (j = 0; j < 2; j++) {
+      if (*eobs++ > 1)
+        vp9_dequant_idct_add_c(q, dq, pre, dstu, 8, stride);
+      else {
+        vp9_dc_only_idct_add_c(q[0]*dq[0], pre, dstu, 8, stride);
+        ((int *)q)[0] = 0;
+      }
+
+      q    += 16;
+      pre  += 4;
+      dstu += 4;
+    }
+
+    pre  += 32 - 8;
+    dstu += 4 * stride - 8;
+  }
+
+  for (i = 0; i < 2; i++) {
+    for (j = 0; j < 2; j++) {
+      if (*eobs++ > 1)
+        vp9_dequant_idct_add_c(q, dq, pre, dstv, 8, stride);
+      else {
+        vp9_dc_only_idct_add_c(q[0]*dq[0], pre, dstv, 8, stride);
+        ((int *)q)[0] = 0;
+      }
+
+      q    += 16;
+      pre  += 4;
+      dstv += 4;
+    }
+
+    pre  += 32 - 8;
+    dstv += 4 * stride - 8;
+  }
+}
+
+#if CONFIG_SUPERBLOCKS
+void vp9_dequant_idct_add_uv_block_4x4_inplace_c(short *q, const short *dq,
+                                                 unsigned char *dstu,
+                                                 unsigned char *dstv,
+                                                 int stride,
+                                                 unsigned short *eobs,
+                                                 MACROBLOCKD *xd) {
+  int i, j;
+
+  for (i = 0; i < 2; i++) {
+    for (j = 0; j < 2; j++) {
+      if (*eobs++ > 1) {
+        vp9_dequant_idct_add_c(q, dq, dstu, dstu, stride, stride);
+      } else {
+        vp9_dc_only_idct_add_c(q[0]*dq[0], dstu, dstu, stride, stride);
+        ((int *)q)[0] = 0;
+      }
+
+      q    += 16;
+      dstu += 4;
+    }
+
+    dstu += 4 * stride - 8;
+  }
+
+  for (i = 0; i < 2; i++) {
+    for (j = 0; j < 2; j++) {
+      if (*eobs++ > 1) {
+        vp9_dequant_idct_add_c(q, dq, dstv, dstv, stride, stride);
+      } else {
+        vp9_dc_only_idct_add_c(q[0]*dq[0], dstv, dstv, stride, stride);
+        ((int *)q)[0] = 0;
+      }
+
+      q    += 16;
+      dstv += 4;
+    }
+
+    dstv += 4 * stride - 8;
+  }
+}
+#endif
+
+void vp9_dequant_dc_idct_add_y_block_8x8_c(short *q, const short *dq,
+                                           unsigned char *pre,
+                                           unsigned char *dst,
+                                           int stride, unsigned short *eobs,
+                                           const short *dc,
+                                           MACROBLOCKD *xd) {
+  q[0] = dc[0];
+  vp9_dequant_idct_add_8x8_c(q, dq, pre, dst, 16, stride, 1, xd->eobs[0]);
+
+  q[64] = dc[1];
+  vp9_dequant_idct_add_8x8_c(&q[64], dq, pre + 8, dst + 8, 16, stride, 1,
+                             xd->eobs[4]);
+
+  q[128] = dc[4];
+  vp9_dequant_idct_add_8x8_c(&q[128], dq, pre + 8 * 16,
+                                dst + 8 * stride, 16, stride, 1, xd->eobs[8]);
+
+  q[192] = dc[8];
+  vp9_dequant_idct_add_8x8_c(&q[192], dq, pre + 8 * 16 + 8,
+                                dst + 8 * stride + 8, 16, stride, 1,
+                                xd->eobs[12]);
+}
+
+#if CONFIG_SUPERBLOCKS
+void vp9_dequant_dc_idct_add_y_block_8x8_inplace_c(short *q, const short *dq,
+                                                   unsigned char *dst,
+                                                   int stride,
+                                                   unsigned short *eobs,
+                                                   const short *dc,
+                                                   MACROBLOCKD *xd) {
+  q[0] = dc[0];
+  vp9_dequant_idct_add_8x8_c(q, dq, dst, dst, stride, stride, 1, xd->eobs[0]);
+
+  q[64] = dc[1];
+  vp9_dequant_idct_add_8x8_c(&q[64], dq, dst + 8,
+                                dst + 8, stride, stride, 1, xd->eobs[4]);
+
+  q[128] = dc[4];
+  vp9_dequant_idct_add_8x8_c(&q[128], dq, dst + 8 * stride,
+                                dst + 8 * stride, stride, stride, 1,
+                                xd->eobs[8]);
+
+  q[192] = dc[8];
+  vp9_dequant_idct_add_8x8_c(&q[192], dq, dst + 8 * stride + 8,
+                                dst + 8 * stride + 8, stride, stride, 1,
+                                xd->eobs[12]);
+}
+#endif
+
+void vp9_dequant_idct_add_y_block_8x8_c(short *q, const short *dq,
+                                        unsigned char *pre,
+                                        unsigned char *dst,
+                                        int stride, unsigned short *eobs,
+                                        MACROBLOCKD *xd) {
+  unsigned char *origdest = dst;
+  unsigned char *origpred = pre;
+
+  vp9_dequant_idct_add_8x8_c(q, dq, pre, dst, 16, stride, 0, xd->eobs[0]);
+  vp9_dequant_idct_add_8x8_c(&q[64], dq, origpred + 8,
+                             origdest + 8, 16, stride, 0, xd->eobs[4]);
+  vp9_dequant_idct_add_8x8_c(&q[128], dq, origpred + 8 * 16,
+                             origdest + 8 * stride, 16, stride, 0, xd->eobs[8]);
+  vp9_dequant_idct_add_8x8_c(&q[192], dq, origpred + 8 * 16 + 8,
+                             origdest + 8 * stride + 8, 16, stride, 0,
+                             xd->eobs[12]);
+}
+
+void vp9_dequant_idct_add_uv_block_8x8_c(short *q, const short *dq,
+                                         unsigned char *pre,
+                                         unsigned char *dstu,
+                                         unsigned char *dstv,
+                                         int stride, unsigned short *eobs,
+                                         MACROBLOCKD *xd) {
+  vp9_dequant_idct_add_8x8_c(q, dq, pre, dstu, 8, stride, 0, xd->eobs[16]);
+
+  q    += 64;
+  pre  += 64;
+
+  vp9_dequant_idct_add_8x8_c(q, dq, pre, dstv, 8, stride, 0, xd->eobs[20]);
+}
+
+#if CONFIG_SUPERBLOCKS
+void vp9_dequant_idct_add_uv_block_8x8_inplace_c(short *q, const short *dq,
+                                                 unsigned char *dstu,
+                                                 unsigned char *dstv,
+                                                 int stride,
+                                                 unsigned short *eobs,
+                                                 MACROBLOCKD *xd) {
+  vp9_dequant_idct_add_8x8_c(q, dq, dstu, dstu, stride, stride, 0,
+                             xd->eobs[16]);
+
+  q += 64;
+  vp9_dequant_idct_add_8x8_c(q, dq, dstv, dstv, stride, stride, 0,
+                             xd->eobs[20]);
+}
+#endif
+
+#if CONFIG_LOSSLESS
+void vp9_dequant_dc_idct_add_y_block_lossless_c(short *q, const short *dq,
+                                                unsigned char *pre,
+                                                unsigned char *dst,
+                                                int stride,
+                                                unsigned short *eobs,
+                                                const short *dc) {
+  int i, j;
+
+  for (i = 0; i < 4; i++) {
+    for (j = 0; j < 4; j++) {
+      if (*eobs++ > 1)
+        vp9_dequant_dc_idct_add_lossless_c(q, dq, pre, dst, 16, stride, dc[0]);
+      else
+        vp9_dc_only_inv_walsh_add_c(dc[0], pre, dst, 16, stride);
+
+      q   += 16;
+      pre += 4;
+      dst += 4;
+      dc++;
+    }
+
+    pre += 64 - 16;
+    dst += 4 * stride - 16;
+  }
+}
+
+void vp9_dequant_idct_add_y_block_lossless_c(short *q, const short *dq,
+                                             unsigned char *pre,
+                                             unsigned char *dst,
+                                             int stride, unsigned short *eobs) {
+  int i, j;
+
+  for (i = 0; i < 4; i++) {
+    for (j = 0; j < 4; j++) {
+      if (*eobs++ > 1)
+        vp9_dequant_idct_add_lossless_c(q, dq, pre, dst, 16, stride);
+      else {
+        vp9_dc_only_inv_walsh_add_c(q[0]*dq[0], pre, dst, 16, stride);
+        ((int *)q)[0] = 0;
+      }
+
+      q   += 16;
+      pre += 4;
+      dst += 4;
+    }
+
+    pre += 64 - 16;
+    dst += 4 * stride - 16;
+  }
+}
+
+void vp9_dequant_idct_add_uv_block_lossless_c(short *q, const short *dq,
+                                              unsigned char *pre,
+                                              unsigned char *dstu,
+                                              unsigned char *dstv,
+                                              int stride,
+                                              unsigned short *eobs) {
+  int i, j;
+
+  for (i = 0; i < 2; i++) {
+    for (j = 0; j < 2; j++) {
+      if (*eobs++ > 1)
+        vp9_dequant_idct_add_lossless_c(q, dq, pre, dstu, 8, stride);
+      else {
+        vp9_dc_only_inv_walsh_add_c(q[0]*dq[0], pre, dstu, 8, stride);
+        ((int *)q)[0] = 0;
+      }
+
+      q    += 16;
+      pre  += 4;
+      dstu += 4;
+    }
+
+    pre  += 32 - 8;
+    dstu += 4 * stride - 8;
+  }
+
+  for (i = 0; i < 2; i++) {
+    for (j = 0; j < 2; j++) {
+      if (*eobs++ > 1)
+        vp9_dequant_idct_add_lossless_c(q, dq, pre, dstv, 8, stride);
+      else {
+        vp9_dc_only_inv_walsh_add_c(q[0]*dq[0], pre, dstv, 8, stride);
+        ((int *)q)[0] = 0;
+      }
+
+      q    += 16;
+      pre  += 4;
+      dstv += 4;
+    }
+
+    pre  += 32 - 8;
+    dstv += 4 * stride - 8;
+  }
+}
+#endif
+