ARM: libswresample: NEON optimised flat float to s16 conversion

Adapted to swr by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 48 insertions, 0 deletions

diff --git a/libswresample/arm/audio_convert_init.c b/libswresample/arm/audio_convert_init.c
new file mode 100644
index 0000000000..f8f80078a7
--- /dev/null
+++ b/libswresample/arm/audio_convert_init.c
@@ -0,0 +1,48 @@
+/*
+ * This file is part of libswresample.
+ *
+ * libswresample 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.
+ *
+ * libswresample 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 libswresample; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/arm/cpu.h"
+#include "libavutil/samplefmt.h"
+#include "libswresample/swresample_internal.h"
+#include "libswresample/audioconvert.h"
+
+void swri_oldapi_conv_flt_to_s16_neon(int16_t *dst, const float *src, int len);
+
+static void conv_flt_to_s16_neon(uint8_t **dst, const uint8_t **src, int len){
+    swri_oldapi_conv_flt_to_s16_neon((int16_t*)*dst, (const float*)*src, len);
+}
+
+av_cold void swri_audio_convert_init_arm(struct AudioConvert *ac,
+                                       enum AVSampleFormat out_fmt,
+                                       enum AVSampleFormat in_fmt,
+                                       int channels)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    ac->simd_f= NULL;
+
+    if (have_neon(cpu_flags)) {
+        if(out_fmt == AV_SAMPLE_FMT_S16 && in_fmt == AV_SAMPLE_FMT_FLT || out_fmt == AV_SAMPLE_FMT_S16P && in_fmt == AV_SAMPLE_FMT_FLTP)
+            ac->simd_f = conv_flt_to_s16_neon;
+    }
+}