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https://gitee.com/openharmony/third_party_alsa-utils
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48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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//
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// generator.c - a generator for test with buffers of PCM 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_TEST_GENERATOR__H_
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#define __ALSA_UTILS_AXFER_TEST_GENERATOR__H_
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#include <stdint.h>
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#include <alsa/asoundlib.h>
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struct test_generator;
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typedef int (*generator_cb_t)(struct test_generator *gen,
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snd_pcm_access_t access,
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snd_pcm_format_t sample_format,
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unsigned int samples_per_frame,
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void *frame_buffer, unsigned int frame_count);
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struct test_generator {
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int fd;
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uint64_t access_mask;
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uint64_t sample_format_mask;
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unsigned int min_samples_per_frame;
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unsigned int max_samples_per_frame;
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unsigned int min_frame_count;
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unsigned int max_frame_count;
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unsigned int step_frame_count;
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generator_cb_t cb;
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void *private_data;
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};
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int generator_context_init(struct test_generator *gen,
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uint64_t access_mask, uint64_t sample_format_mask,
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unsigned int min_samples_per_frame,
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unsigned int max_samples_per_frame,
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unsigned int min_frame_count,
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unsigned int max_frame_count,
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unsigned int step_frame_count,
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unsigned int private_size);
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int generator_context_run(struct test_generator *gen, generator_cb_t cb);
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void generator_context_destroy(struct test_generator *gen);
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#endif
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