1 files changed, 85 insertions, 0 deletions
diff --git a/src/modules/module-protocol-pulse/volume.h b/src/modules/module-protocol-pulse/volume.h
new file mode 100644
index 0000000..11ec51a
--- /dev/null
+++ b/src/modules/module-protocol-pulse/volume.h
@@ -0,0 +1,85 @@
+/* PipeWire
+ *
+ * Copyright © 2020 Wim Taymans
+ * Copyright © 2021 Sanchayan Maity <sanchayan@asymptotic.io>
+ *
+ * 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 PULSE_SERVER_VOLUME_H
+#define PULSE_SERVER_VOLUME_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "format.h"
+
+struct spa_pod;
+
+struct volume {
+	uint8_t channels;
+	float values[CHANNELS_MAX];
+};
+
+#define VOLUME_INIT		\
+	(struct volume) {	\
+		.channels = 0,	\
+	}
+
+struct volume_info {
+	struct volume volume;
+	struct channel_map map;
+	bool mute;
+	float level;
+	float base;
+	uint32_t steps;
+#define VOLUME_HW_VOLUME	(1<<0)
+#define VOLUME_HW_MUTE		(1<<1)
+	uint32_t flags;
+};
+
+#define VOLUME_INFO_INIT		\
+	(struct volume_info) {		\
+		.volume = VOLUME_INIT,	\
+		.mute = false,		\
+		.level = 1.0,		\
+		.base = 1.0,		\
+		.steps = 256,		\
+	}
+
+static inline bool volume_valid(const struct volume *vol)
+{
+	if (vol->channels == 0 || vol->channels > CHANNELS_MAX)
+		return false;
+	return true;
+}
+
+static inline void volume_make(struct volume *vol, uint8_t channels)
+{
+	uint8_t i;
+	for (i = 0; i < channels; i++)
+		vol->values[i] = 1.0f;
+	vol->channels = channels;
+}
+
+int volume_compare(struct volume *vol, struct volume *other);
+int volume_parse_param(const struct spa_pod *param, struct volume_info *info, bool monitor);
+
+#endif