// SPDX-License-Identifier: GPL-2.0

//

// generator.c - a generator for test with buffers of PCM frames.

//

// Copyright (c) 2018 Takashi Sakamoto <o-takashi@sakamocchi.jp>

//

// Licensed under the terms of the GNU General Public License, version 2.

#ifndef __ALSA_UTILS_AXFER_TEST_GENERATOR__H_

#define __ALSA_UTILS_AXFER_TEST_GENERATOR__H_

#include <stdint.h>

#include <alsa/asoundlib.h>

struct test_generator;

typedef int (*generator_cb_t)(struct test_generator *gen,

			      snd_pcm_access_t access,

			      snd_pcm_format_t sample_format,

			      unsigned int samples_per_frame,

			      void *frame_buffer, unsigned int frame_count);

struct test_generator {

	int fd;

	uint64_t access_mask;

	uint64_t sample_format_mask;

	unsigned int min_samples_per_frame;

	unsigned int max_samples_per_frame;

	unsigned int min_frame_count;

	unsigned int max_frame_count;

	unsigned int step_frame_count;

	generator_cb_t cb;

	void *private_data;

};

int generator_context_init(struct test_generator *gen,

			   uint64_t access_mask, uint64_t sample_format_mask,

			   unsigned int min_samples_per_frame,

			   unsigned int max_samples_per_frame,

			   unsigned int min_frame_count,

			   unsigned int max_frame_count,

			   unsigned int step_frame_count,

			   unsigned int private_size);

int generator_context_run(struct test_generator *gen, generator_cb_t cb);

void generator_context_destroy(struct test_generator *gen);

#endif