Separate format conversion DSP functions from DSPContext.

This will be beneficial for use with the audio conversion API without
requiring it to depend on all of dsputil.

Signed-off-by: Mans Rullgard <mans@mansr.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/libavcodec/arm/fmtconvert_init_arm.c b/libavcodec/arm/fmtconvert_init_arm.c
new file mode 100644
index 0000000000..4b6e3939f5
--- /dev/null
+++ b/libavcodec/arm/fmtconvert_init_arm.c
@@ -0,0 +1,48 @@
+/*
+ * ARM optimized Format Conversion Utils
+ *
+ * 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 "libavcodec/avcodec.h"
+#include "libavcodec/fmtconvert.h"
+
+void ff_int32_to_float_fmul_scalar_neon(float *dst, const int *src,
+                                        float mul, int len);
+
+void ff_float_to_int16_neon(int16_t *dst, const float *src, long len);
+void ff_float_to_int16_interleave_neon(int16_t *, const float **, long, int);
+
+void ff_float_to_int16_vfp(int16_t *dst, const float *src, long len);
+
+void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx)
+{
+    if (HAVE_ARMVFP && HAVE_ARMV6) {
+        c->float_to_int16 = ff_float_to_int16_vfp;
+    }
+
+    if (HAVE_NEON) {
+        c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_neon;
+
+        if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
+            c->float_to_int16            = ff_float_to_int16_neon;
+            c->float_to_int16_interleave = ff_float_to_int16_interleave_neon;
+        }
+    }
+}