swr: split out DSP functions.

DSP bits of swri_resample go into their own mini-DSP functions; DSP
init goes from a per-call branch in multiple_resample to a proper
DSP init routine; x86 bits go into x86/; swri_resample() moves out of
resample_template.c into resample.c because it's independent of DSP
code or sample type; multiple_resample() is simplified.

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

1 files changed, 69 insertions, 0 deletions

diff --git a/libswresample/resample_dsp.c b/libswresample/resample_dsp.c
new file mode 100644
index 0000000000..a48a5a98cf
--- /dev/null
+++ b/libswresample/resample_dsp.c
@@ -0,0 +1,69 @@
+/*
+ * audio resampling
+ * Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * audio resampling
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#include "resample.h"
+
+#define DO_RESAMPLE_ONE 1
+
+#define TEMPLATE_RESAMPLE_S16
+#include "resample_template.c"
+#undef TEMPLATE_RESAMPLE_S16
+
+#define TEMPLATE_RESAMPLE_S32
+#include "resample_template.c"
+#undef TEMPLATE_RESAMPLE_S32
+
+#define TEMPLATE_RESAMPLE_FLT
+#include "resample_template.c"
+#undef TEMPLATE_RESAMPLE_FLT
+
+#define TEMPLATE_RESAMPLE_DBL
+#include "resample_template.c"
+#undef TEMPLATE_RESAMPLE_DBL
+
+#undef DO_RESAMPLE_ONE
+
+void swresample_dsp_init(ResampleContext *c)
+{
+#define FNIDX(fmt) (AV_SAMPLE_FMT_##fmt - AV_SAMPLE_FMT_S16P)
+    c->dsp.resample_one[FNIDX(S16P)] = (resample_one_fn) resample_one_int16;
+    c->dsp.resample_one[FNIDX(S32P)] = (resample_one_fn) resample_one_int32;
+    c->dsp.resample_one[FNIDX(FLTP)] = (resample_one_fn) resample_one_float;
+    c->dsp.resample_one[FNIDX(DBLP)] = (resample_one_fn) resample_one_double;
+
+    c->dsp.resample_common[FNIDX(S16P)] = (resample_fn) resample_common_int16;
+    c->dsp.resample_common[FNIDX(S32P)] = (resample_fn) resample_common_int32;
+    c->dsp.resample_common[FNIDX(FLTP)] = (resample_fn) resample_common_float;
+    c->dsp.resample_common[FNIDX(DBLP)] = (resample_fn) resample_common_double;
+
+    c->dsp.resample_linear[FNIDX(S16P)] = (resample_fn) resample_linear_int16;
+    c->dsp.resample_linear[FNIDX(S32P)] = (resample_fn) resample_linear_int32;
+    c->dsp.resample_linear[FNIDX(FLTP)] = (resample_fn) resample_linear_float;
+    c->dsp.resample_linear[FNIDX(DBLP)] = (resample_fn) resample_linear_double;
+
+    if (ARCH_X86) swresample_dsp_x86_init(c);
+}