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-rw-r--r--media/ffvpx/libavutil/pixelutils.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/pixelutils.c b/media/ffvpx/libavutil/pixelutils.c
new file mode 100644
index 0000000000..820889a143
--- /dev/null
+++ b/media/ffvpx/libavutil/pixelutils.c
@@ -0,0 +1,95 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stddef.h>
+
+#include "config.h"
+#include "pixelutils.h"
+
+#if CONFIG_PIXELUTILS
+#include <stdlib.h>
+#include <string.h>
+
+#include "attributes.h"
+#include "macros.h"
+
+#include "x86/pixelutils.h"
+
+static av_always_inline int sad_wxh(const uint8_t *src1, ptrdiff_t stride1,
+ const uint8_t *src2, ptrdiff_t stride2,
+ int w, int h)
+{
+ int x, y, sum = 0;
+
+ for (y = 0; y < h; y++) {
+ for (x = 0; x < w; x++)
+ sum += abs(src1[x] - src2[x]);
+ src1 += stride1;
+ src2 += stride2;
+ }
+ return sum;
+}
+
+#define DECLARE_BLOCK_FUNCTIONS(size) \
+static int block_sad_##size##x##size##_c(const uint8_t *src1, ptrdiff_t stride1, \
+ const uint8_t *src2, ptrdiff_t stride2) \
+{ \
+ return sad_wxh(src1, stride1, src2, stride2, size, size); \
+}
+
+DECLARE_BLOCK_FUNCTIONS(2)
+DECLARE_BLOCK_FUNCTIONS(4)
+DECLARE_BLOCK_FUNCTIONS(8)
+DECLARE_BLOCK_FUNCTIONS(16)
+DECLARE_BLOCK_FUNCTIONS(32)
+
+static const av_pixelutils_sad_fn sad_c[] = {
+ block_sad_2x2_c,
+ block_sad_4x4_c,
+ block_sad_8x8_c,
+ block_sad_16x16_c,
+ block_sad_32x32_c,
+};
+#else
+#include "log.h"
+#endif /* CONFIG_PIXELUTILS */
+
+av_pixelutils_sad_fn av_pixelutils_get_sad_fn(int w_bits, int h_bits, int aligned, void *log_ctx)
+{
+#if !CONFIG_PIXELUTILS
+ av_log(log_ctx, AV_LOG_ERROR, "pixelutils support is required "
+ "but libavutil is not compiled with it\n");
+ return NULL;
+#else
+ av_pixelutils_sad_fn sad[FF_ARRAY_ELEMS(sad_c)];
+
+ memcpy(sad, sad_c, sizeof(sad));
+
+ if (w_bits < 1 || w_bits > FF_ARRAY_ELEMS(sad) ||
+ h_bits < 1 || h_bits > FF_ARRAY_ELEMS(sad))
+ return NULL;
+ if (w_bits != h_bits) // only squared sad for now
+ return NULL;
+
+#if ARCH_X86
+ ff_pixelutils_sad_init_x86(sad, aligned);
+#endif
+
+ return sad[w_bits - 1];
+#endif
+}