1 files changed, 69 insertions, 0 deletions
diff --git a/spa/plugins/audioconvert/resample.h b/spa/plugins/audioconvert/resample.h
new file mode 100644
index 0000000..b1c89d5
--- /dev/null
+++ b/spa/plugins/audioconvert/resample.h
@@ -0,0 +1,69 @@
+/* Spa
+ *
+ * Copyright © 2018 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.
+ */
+
+#ifndef RESAMPLE_H
+#define RESAMPLE_H
+
+#include <spa/support/cpu.h>
+#include <spa/support/log.h>
+
+#define RESAMPLE_DEFAULT_QUALITY	4
+
+struct resample {
+	struct spa_log *log;
+#define RESAMPLE_OPTION_PREFILL		(1<<0)
+	uint32_t options;
+	uint32_t cpu_flags;
+	const char *func_name;
+
+	uint32_t channels;
+	uint32_t i_rate;
+	uint32_t o_rate;
+	double rate;
+	int quality;
+
+	void (*free)		(struct resample *r);
+	void (*update_rate)	(struct resample *r, double rate);
+	uint32_t (*in_len)	(struct resample *r, uint32_t out_len);
+	uint32_t (*out_len)	(struct resample *r, uint32_t in_len);
+	void (*process)		(struct resample *r,
+				 const void * SPA_RESTRICT src[], uint32_t *in_len,
+				 void * SPA_RESTRICT dst[], uint32_t *out_len);
+	void (*reset)		(struct resample *r);
+	uint32_t (*delay)	(struct resample *r);
+	void *data;
+};
+
+#define resample_free(r)		(r)->free(r)
+#define resample_update_rate(r,...)	(r)->update_rate(r,__VA_ARGS__)
+#define resample_in_len(r,...)		(r)->in_len(r,__VA_ARGS__)
+#define resample_out_len(r,...)		(r)->out_len(r,__VA_ARGS__)
+#define resample_process(r,...)		(r)->process(r,__VA_ARGS__)
+#define resample_reset(r)		(r)->reset(r)
+#define resample_delay(r)		(r)->delay(r)
+
+int resample_native_init(struct resample *r);
+int resample_peaks_init(struct resample *r);
+
+#endif /* RESAMPLE_H */