audioconvert: handle more optimizations

Compile an optimized library for the given CPU with the right flags,
then link it with the main library.

spa/plugins/audioconvert/fmt-ops.h

@@ -0,0 +1,101 @@
+/* Spa
+ *
+ * Copyright © 2019 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <math.h>
+
+#include <spa/utils/defs.h>
+
+#define U8_MIN		0
+#define U8_MAX		255
+#define U8_SCALE	127.5f
+#define U8_OFFS		128
+#define U8_TO_F32(v)	((((uint8_t)(v)) * (1.0f / U8_OFFS)) - 1.0)
+#define F32_TO_U8(v)	(uint8_t)((SPA_CLAMP(v, -1.0f, 1.0f) * U8_SCALE) + U8_OFFS)
+
+#define S16_MIN		-32767
+#define S16_MAX		32767
+#define S16_MAX_F	32767.0f
+#define S16_SCALE	32767.0f
+#define S16_TO_F32(v)	(((int16_t)(v)) * (1.0f / S16_SCALE))
+#define F32_TO_S16(v)	(int16_t)(SPA_CLAMP(v, -1.0f, 1.0f) * S16_SCALE)
+
+#define S24_MIN		-8388607
+#define S24_MAX		8388607
+#define S24_MAX_F	8388607.0f
+#define S24_SCALE	8388607.0f
+#define S24_TO_F32(v)	(((int32_t)(v)) * (1.0f / S24_SCALE))
+#define F32_TO_S24(v)	(int32_t)(SPA_CLAMP(v, -1.0f, 1.0f) * S24_SCALE)
+
+#define S32_SCALE	2147483648.0f
+#define S32_MIN		2147483520.0f
+
+#define S32_TO_F32(v)	S24_TO_F32((v) >> 8)
+#define F32_TO_S32(v)	(F32_TO_S24(v) << 8)
+
+static inline int32_t read_s24(const void *src)
+{
+	const int8_t *s = src;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	return (((int32_t)s[2] << 16) | ((uint32_t)(uint8_t)s[1] << 8) | (uint32_t)(uint8_t)s[0]);
+#else
+	return (((int32_t)s[0] << 16) | ((uint32_t)(uint8_t)s[1] << 8) | (uint32_t)(uint8_t)s[2]);
+#endif
+}
+
+static inline void write_s24(void *dst, int32_t val)
+{
+	uint8_t *d = dst;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	d[0] = (uint8_t) (val);
+	d[1] = (uint8_t) (val >> 8);
+	d[2] = (uint8_t) (val >> 16);
+#else
+	d[0] = (uint8_t) (val >> 16);
+	d[1] = (uint8_t) (val >> 8);
+	d[2] = (uint8_t) (val);
+#endif
+}
+
+typedef void (*convert_func_t) (void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
+		uint32_t n_channels, uint32_t n_samples);
+
+#if defined(HAVE_SSE2)
+void conv_s16_to_f32d_sse2(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
+                uint32_t n_channels, uint32_t n_samples);
+void conv_s24_to_f32d_sse2(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
+		uint32_t n_channels, uint32_t n_samples);
+void conv_f32d_to_s32_sse2(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
+		uint32_t n_channels, uint32_t n_samples);
+void conv_f32d_to_s16_sse2(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
+		uint32_t n_channels, uint32_t n_samples);
+#endif
+#if defined(HAVE_SSSE3)
+void conv_s24_to_f32d_ssse3(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
+		uint32_t n_channels, uint32_t n_samples);
+#endif
+#if defined(HAVE_SSE41)
+void conv_s24_to_f32d_sse41(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
+                uint32_t n_channels, uint32_t n_samples);
+
+#endif