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https://gitee.com/openharmony/third_party_alsa-utils
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118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// xfer.h - a header for receiver/transmiter of data frames.
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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__H_
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#define __ALSA_UTILS_AXFER_XFER__H_
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#include "aconfig.h"
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#include "mapper.h"
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#include <getopt.h>
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enum xfer_type {
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XFER_TYPE_UNSUPPORTED = -1,
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XFER_TYPE_LIBASOUND = 0,
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#if WITH_FFADO
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XFER_TYPE_LIBFFADO,
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#endif
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XFER_TYPE_COUNT,
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};
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struct xfer_ops;
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struct xfer_context {
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snd_pcm_stream_t direction;
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enum xfer_type type;
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const struct xfer_ops *ops;
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void *private_data;
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char *sample_format_literal;
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char *cntr_format_literal;
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unsigned int verbose;
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unsigned int duration_seconds;
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unsigned int duration_frames;
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unsigned int frames_per_second;
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unsigned int samples_per_frame;
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bool help:1;
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bool quiet:1;
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bool dump_hw_params:1;
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bool multiple_cntrs:1; // For mapper.
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snd_pcm_format_t sample_format;
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// For containers.
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char **paths;
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unsigned int path_count;
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enum container_format cntr_format;
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};
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enum xfer_type xfer_type_from_label(const char *label);
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const char *xfer_label_from_type(enum xfer_type type);
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int xfer_context_init(struct xfer_context *xfer, enum xfer_type type,
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snd_pcm_stream_t direction, int argc, char *const *argv);
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void xfer_context_destroy(struct xfer_context *xfer);
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int xfer_context_pre_process(struct xfer_context *xfer,
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snd_pcm_format_t *format,
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unsigned int *samples_per_frame,
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unsigned int *frames_per_second,
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snd_pcm_access_t *access,
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snd_pcm_uframes_t *frames_per_buffer);
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int xfer_context_process_frames(struct xfer_context *xfer,
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struct mapper_context *mapper,
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struct container_context *cntrs,
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unsigned int *frame_count);
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void xfer_context_pause(struct xfer_context *xfer, bool enable);
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void xfer_context_post_process(struct xfer_context *xfer);
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struct xfer_data;
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int xfer_options_parse_args(struct xfer_context *xfer,
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const struct xfer_data *data, int argc,
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char *const *argv);
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int xfer_options_fixup_paths(struct xfer_context *xfer);
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void xfer_options_calculate_duration(struct xfer_context *xfer,
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uint64_t *total_frame_count);
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// For internal use in 'xfer' module.
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struct xfer_ops {
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int (*init)(struct xfer_context *xfer, snd_pcm_stream_t direction);
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int (*parse_opt)(struct xfer_context *xfer, int key, const char *optarg);
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int (*validate_opts)(struct xfer_context *xfer);
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int (*pre_process)(struct xfer_context *xfer, snd_pcm_format_t *format,
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unsigned int *samples_per_frame,
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unsigned int *frames_per_second,
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snd_pcm_access_t *access,
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snd_pcm_uframes_t *frames_per_buffer);
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int (*process_frames)(struct xfer_context *xfer,
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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 xfer_context *xfer);
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void (*destroy)(struct xfer_context *xfer);
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void (*pause)(struct xfer_context *xfer, bool enable);
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void (*help)(struct xfer_context *xfer);
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};
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struct xfer_data {
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const char *s_opts;
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const struct option *l_opts;
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unsigned int l_opts_count;
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struct xfer_ops ops;
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unsigned int private_size;
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};
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extern const struct xfer_data xfer_libasound;
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#if WITH_FFADO
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extern const struct xfer_data xfer_libffado;
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#endif
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#endif
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