neatvnc/include/tight.h

/*
 * Copyright (c) 2019 - 2020 Andri Yngvason
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#pragma once

#include <zlib.h>

struct vec;
struct nvnc_client;
struct nvnc_fb;
struct pixman_region16;
struct rfb_pixel_format;

enum tight_quality {
	TIGHT_QUALITY_UNSPEC = 0,
	TIGHT_QUALITY_LOSSLESS,
	TIGHT_QUALITY_LOW,
	TIGHT_QUALITY_HIGH,
};

struct tight_encoder {
	z_stream zs[4];
	enum tight_quality quality;
};

int tight_encoder_init(struct tight_encoder*);
void tight_encoder_destroy(struct tight_encoder*);

int tight_encode_frame(struct tight_encoder* self, struct vec* dst,
                       const struct nvnc_fb* fb,
                       const struct rfb_pixel_format* src_fmt,
                       struct pixman_region16* region);