mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2026-04-29 06:46:38 -04:00
84a8e1aa43
We could udpate the libpulse protocol to add more flag types, but this seems simpler than requiring a protocol and ABI update.
74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/* PipeWire */
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/* SPDX-FileCopyrightText: Copyright © 2020 Wim Taymans */
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/* SPDX-FileCopyrightText: Copyright © 2021 Sanchayan Maity <sanchayan@asymptotic.io> */
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/* SPDX-License-Identifier: MIT */
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#ifndef PULSE_SERVER_VOLUME_H
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#define PULSE_SERVER_VOLUME_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "format.h"
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struct spa_pod;
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struct volume {
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uint8_t channels;
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float values[CHANNELS_MAX];
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};
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#define VOLUME_INIT \
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(struct volume) { \
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.channels = 0, \
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}
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struct volume_info {
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struct volume volume;
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struct channel_map map;
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bool mute;
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float level;
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float base;
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uint32_t steps;
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#define VOLUME_HW_VOLUME (1<<0)
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#define VOLUME_HW_MUTE (1<<1)
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#define VOLUME_READ (1<<2)
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#define VOLUME_WRITE (1<<3)
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#define VOLUME_UPDOWN (1<<4)
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#define VOLUME_READ_MUTE (1<<5)
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#define VOLUME_WRITE_MUTE (1<<6)
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#define VOLUME_TOGGLE_MUTE (1<<7)
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#define VOLUME_READ_BALANCE (1<<8)
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#define VOLUME_WRITE_BALANCE (1<<9)
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#define VOLUME_CONTROL_MASK (0x01FC)
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uint32_t flags;
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};
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#define VOLUME_INFO_INIT \
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(struct volume_info) { \
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.volume = VOLUME_INIT, \
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.mute = false, \
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.level = 1.0, \
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.base = 1.0, \
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.steps = 256, \
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}
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static inline bool volume_valid(const struct volume *vol)
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{
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if (vol->channels == 0 || vol->channels > CHANNELS_MAX)
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return false;
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return true;
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}
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static inline void volume_make(struct volume *vol, uint8_t channels)
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{
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uint8_t i;
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for (i = 0; i < channels; i++)
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vol->values[i] = 1.0f;
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vol->channels = channels;
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}
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int volume_compare(struct volume *vol, struct volume *other);
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int volume_parse_param(const struct spa_pod *param, struct volume_info *info, bool monitor);
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#endif
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