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-rw-r--r--qemu/audio/mixeng_template.h154
1 files changed, 154 insertions, 0 deletions
diff --git a/qemu/audio/mixeng_template.h b/qemu/audio/mixeng_template.h
new file mode 100644
index 000000000..77cc89b9e
--- /dev/null
+++ b/qemu/audio/mixeng_template.h
@@ -0,0 +1,154 @@
+/*
+ * QEMU Mixing engine
+ *
+ * Copyright (c) 2004-2005 Vassili Karpov (malc)
+ *
+ * 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 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.
+ */
+
+/*
+ * Tusen tack till Mike Nordell
+ * dec++'ified by Dscho
+ */
+
+#ifndef SIGNED
+#define HALF (IN_MAX >> 1)
+#endif
+
+#define ET glue (ENDIAN_CONVERSION, glue (glue (glue (_, ITYPE), BSIZE), _t))
+#define IN_T glue (glue (ITYPE, BSIZE), _t)
+
+#ifdef FLOAT_MIXENG
+static inline mixeng_real glue (conv_, ET) (IN_T v)
+{
+ IN_T nv = ENDIAN_CONVERT (v);
+
+#ifdef RECIPROCAL
+#ifdef SIGNED
+ return nv * (1.f / (mixeng_real) (IN_MAX - IN_MIN));
+#else
+ return (nv - HALF) * (1.f / (mixeng_real) IN_MAX);
+#endif
+#else /* !RECIPROCAL */
+#ifdef SIGNED
+ return nv / (mixeng_real) ((mixeng_real) IN_MAX - IN_MIN);
+#else
+ return (nv - HALF) / (mixeng_real) IN_MAX;
+#endif
+#endif
+}
+
+static inline IN_T glue (clip_, ET) (mixeng_real v)
+{
+ if (v >= 0.5) {
+ return IN_MAX;
+ }
+ else if (v < -0.5) {
+ return IN_MIN;
+ }
+
+#ifdef SIGNED
+ return ENDIAN_CONVERT ((IN_T) (v * ((mixeng_real) IN_MAX - IN_MIN)));
+#else
+ return ENDIAN_CONVERT ((IN_T) ((v * IN_MAX) + HALF));
+#endif
+}
+
+#else /* !FLOAT_MIXENG */
+
+static inline int64_t glue (conv_, ET) (IN_T v)
+{
+ IN_T nv = ENDIAN_CONVERT (v);
+#ifdef SIGNED
+ return ((int64_t) nv) << (32 - SHIFT);
+#else
+ return ((int64_t) nv - HALF) << (32 - SHIFT);
+#endif
+}
+
+static inline IN_T glue (clip_, ET) (int64_t v)
+{
+ if (v >= 0x7f000000) {
+ return IN_MAX;
+ }
+ else if (v < -2147483648LL) {
+ return IN_MIN;
+ }
+
+#ifdef SIGNED
+ return ENDIAN_CONVERT ((IN_T) (v >> (32 - SHIFT)));
+#else
+ return ENDIAN_CONVERT ((IN_T) ((v >> (32 - SHIFT)) + HALF));
+#endif
+}
+#endif
+
+static void glue (glue (conv_, ET), _to_stereo)
+ (struct st_sample *dst, const void *src, int samples)
+{
+ struct st_sample *out = dst;
+ IN_T *in = (IN_T *) src;
+
+ while (samples--) {
+ out->l = glue (conv_, ET) (*in++);
+ out->r = glue (conv_, ET) (*in++);
+ out += 1;
+ }
+}
+
+static void glue (glue (conv_, ET), _to_mono)
+ (struct st_sample *dst, const void *src, int samples)
+{
+ struct st_sample *out = dst;
+ IN_T *in = (IN_T *) src;
+
+ while (samples--) {
+ out->l = glue (conv_, ET) (in[0]);
+ out->r = out->l;
+ out += 1;
+ in += 1;
+ }
+}
+
+static void glue (glue (clip_, ET), _from_stereo)
+ (void *dst, const struct st_sample *src, int samples)
+{
+ const struct st_sample *in = src;
+ IN_T *out = (IN_T *) dst;
+ while (samples--) {
+ *out++ = glue (clip_, ET) (in->l);
+ *out++ = glue (clip_, ET) (in->r);
+ in += 1;
+ }
+}
+
+static void glue (glue (clip_, ET), _from_mono)
+ (void *dst, const struct st_sample *src, int samples)
+{
+ const struct st_sample *in = src;
+ IN_T *out = (IN_T *) dst;
+ while (samples--) {
+ *out++ = glue (clip_, ET) (in->l + in->r);
+ in += 1;
+ }
+}
+
+#undef ET
+#undef HALF
+#undef IN_T