1 files changed, 103 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/flacdsp_template.c b/media/ffvpx/libavcodec/flacdsp_template.c
new file mode 100644
index 0000000000..0a6fe59e28
--- /dev/null
+++ b/media/ffvpx/libavcodec/flacdsp_template.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2012 Mans Rullgard <mans@mansr.com>
+ *
+ * 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 <stdint.h>
+#include "libavutil/macros.h"
+
+#undef FUNC
+#undef FSUF
+#undef sample
+#undef sample_type
+#undef OUT
+#undef S
+
+#if SAMPLE_SIZE == 32
+#   define sample_type  int32_t
+#else
+#   define sample_type  int16_t
+#endif
+
+#if PLANAR
+#   define FSUF   AV_JOIN(SAMPLE_SIZE, p)
+#   define sample sample_type *
+#   define OUT(n) n
+#   define S(s, c, i) (s[c][i])
+#else
+#   define FSUF   SAMPLE_SIZE
+#   define sample sample_type
+#   define OUT(n) n[0]
+#   define S(s, c, i) (*s++)
+#endif
+
+#define FUNC(n) AV_JOIN(n ## _, FSUF)
+
+static void FUNC(flac_decorrelate_indep_c)(uint8_t **out, int32_t **in,
+                                           int channels, int len, int shift)
+{
+    sample *samples = (sample *) OUT(out);
+    int i, j;
+
+    for (j = 0; j < len; j++)
+        for (i = 0; i < channels; i++)
+            S(samples, i, j) = (int)((unsigned)in[i][j] << shift);
+}
+
+static void FUNC(flac_decorrelate_ls_c)(uint8_t **out, int32_t **in,
+                                        int channels, int len, int shift)
+{
+    sample *samples = (sample *) OUT(out);
+    int i;
+
+    for (i = 0; i < len; i++) {
+        unsigned a = in[0][i];
+        unsigned b = in[1][i];
+        S(samples, 0, i) =  a      << shift;
+        S(samples, 1, i) = (a - b) << shift;
+    }
+}
+
+static void FUNC(flac_decorrelate_rs_c)(uint8_t **out, int32_t **in,
+                                        int channels, int len, int shift)
+{
+    sample *samples = (sample *) OUT(out);
+    int i;
+
+    for (i = 0; i < len; i++) {
+        unsigned a = in[0][i];
+        unsigned b = in[1][i];
+        S(samples, 0, i) = (a + b) << shift;
+        S(samples, 1, i) =  b      << shift;
+    }
+}
+
+static void FUNC(flac_decorrelate_ms_c)(uint8_t **out, int32_t **in,
+                                        int channels, int len, int shift)
+{
+    sample *samples = (sample *) OUT(out);
+    int i;
+
+    for (i = 0; i < len; i++) {
+        unsigned a = in[0][i];
+        int b = in[1][i];
+        a -= b >> 1;
+        S(samples, 0, i) = (a + b) << shift;
+        S(samples, 1, i) =  a      << shift;
+    }
+}