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-rw-r--r--third_party/aom/aom_dsp/subtract.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/subtract.c b/third_party/aom/aom_dsp/subtract.c
new file mode 100644
index 000000000..8dda96efb
--- /dev/null
+++ b/third_party/aom/aom_dsp/subtract.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include <stdlib.h>
+
+#include "./aom_config.h"
+#include "./aom_dsp_rtcd.h"
+
+#include "aom/aom_integer.h"
+#include "aom_ports/mem.h"
+
+void aom_subtract_block_c(int rows, int cols, int16_t *diff,
+ ptrdiff_t diff_stride, const uint8_t *src,
+ ptrdiff_t src_stride, const uint8_t *pred,
+ ptrdiff_t pred_stride) {
+ int r, c;
+
+ for (r = 0; r < rows; r++) {
+ for (c = 0; c < cols; c++) diff[c] = src[c] - pred[c];
+
+ diff += diff_stride;
+ pred += pred_stride;
+ src += src_stride;
+ }
+}
+
+#if CONFIG_HIGHBITDEPTH
+void aom_highbd_subtract_block_c(int rows, int cols, int16_t *diff,
+ ptrdiff_t diff_stride, const uint8_t *src8,
+ ptrdiff_t src_stride, const uint8_t *pred8,
+ ptrdiff_t pred_stride, int bd) {
+ int r, c;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *pred = CONVERT_TO_SHORTPTR(pred8);
+ (void)bd;
+
+ for (r = 0; r < rows; r++) {
+ for (c = 0; c < cols; c++) {
+ diff[c] = src[c] - pred[c];
+ }
+
+ diff += diff_stride;
+ pred += pred_stride;
+ src += src_stride;
+ }
+}
+#endif // CONFIG_HIGHBITDEPTH