mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/* PipeWire
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*
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* Copyright © 2020 Wim Taymans
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* Copyright © 2021 Sanchayan Maity <sanchayan@asymptotic.io>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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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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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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