mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-10 06:15:43 +01:00
0e1b59cb4f
This commit is an integration to add an option for users to choose waiter
type. Users give the type to value to '--waiter-type' ('-w') option to
choose it. Currently, 'snd_pcm_wait()' is just supported as a default.
This alsa-lib API is implemented with a call of poll(2).
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// xfer-libasound.h - a header for receiver/transmitter of frames by alsa-lib.
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//
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// Copyright (c) 2018 Takashi Sakamoto <o-takashi@sakamocchi.jp>
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//
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// Licensed under the terms of the GNU General Public License, version 2.
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#ifndef __ALSA_UTILS_AXFER_XFER_LIBASOUND__H_
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#define __ALSA_UTILS_AXFER_XFER_LIBASOUND__H_
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#include "xfer.h"
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#include "waiter.h"
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#define logging(state, ...) \
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snd_output_printf(state->log, __VA_ARGS__)
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struct xfer_libasound_ops;
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struct libasound_state {
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snd_pcm_t *handle;
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snd_output_t *log;
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snd_pcm_hw_params_t *hw_params;
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snd_pcm_sw_params_t *sw_params;
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const struct xfer_libasound_ops *ops;
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void *private_data;
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bool verbose;
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char *node_literal;
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char *waiter_type_literal;
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unsigned int msec_per_period;
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unsigned int msec_per_buffer;
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unsigned int frames_per_period;
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unsigned int frames_per_buffer;
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unsigned int msec_for_avail_min;
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unsigned int msec_for_start_threshold;
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unsigned int msec_for_stop_threshold;
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bool finish_at_xrun:1;
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bool nonblock:1;
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bool mmap:1;
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bool test_nowait:1;
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bool no_auto_resample:1;
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bool no_auto_channels:1;
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bool no_auto_format:1;
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bool no_softvol:1;
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bool use_waiter:1;
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enum waiter_type waiter_type;
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struct waiter_context *waiter;
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};
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// For internal use in 'libasound' module.
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struct xfer_libasound_ops {
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int (*pre_process)(struct libasound_state *state);
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int (*process_frames)(struct libasound_state *state,
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unsigned int *frame_count,
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struct mapper_context *mapper,
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struct container_context *cntrs);
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void (*post_process)(struct libasound_state *state);
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unsigned int private_size;
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};
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int xfer_libasound_wait_event(struct libasound_state *state, int timeout_msec,
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unsigned short *revents);
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extern const struct xfer_libasound_ops xfer_libasound_irq_rw_ops;
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extern const struct xfer_libasound_ops xfer_libasound_irq_mmap_r_ops;
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extern const struct xfer_libasound_ops xfer_libasound_irq_mmap_w_ops;
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#endif
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