mirror of
https://github.com/pikvm/ustreamer.git
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129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/*****************************************************************************
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# #
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# uStreamer - Lightweight and fast MJPG-HTTP streamer. #
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# #
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# Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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*****************************************************************************/
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#pragma once
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#include <stddef.h>
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#include <stdbool.h>
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#include <linux/videodev2.h>
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#define VIDEO_MIN_WIDTH 160
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#define VIDEO_MAX_WIDTH 10240
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#define VIDEO_MIN_HEIGHT 120
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#define VIDEO_MAX_HEIGHT 4320
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#define VIDEO_MAX_FPS 120
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#define STANDARD_UNKNOWN V4L2_STD_UNKNOWN
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#define STANDARDS_STR "PAL, NTSC, SECAM"
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#define FORMAT_UNKNOWN -1
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#define FORMATS_STR "YUYV, UYVY, RGB565, RGB24, JPEG"
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struct hw_buffer_t {
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unsigned char *data;
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size_t used;
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size_t allocated;
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struct v4l2_buffer buf_info;
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};
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struct picture_t {
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unsigned char *data;
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size_t used;
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size_t allocated;
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long double grab_time;
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long double encode_begin_time;
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long double encode_end_time;
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};
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struct device_runtime_t {
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int fd;
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unsigned width;
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unsigned height;
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unsigned format;
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unsigned n_buffers;
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unsigned n_workers;
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struct hw_buffer_t *hw_buffers;
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struct picture_t *pictures;
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size_t max_raw_image_size;
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bool capturing;
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};
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struct control_t {
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int value;
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bool value_set;
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bool auto_set;
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};
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struct controls_t {
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struct control_t brightness;
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struct control_t contrast;
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struct control_t saturation;
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struct control_t hue;
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struct control_t gamma;
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struct control_t sharpness;
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struct control_t backlight_compensation;
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struct control_t white_balance;
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struct control_t gain;
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};
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struct device_t {
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char *path;
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unsigned input;
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unsigned width;
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unsigned height;
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unsigned format;
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v4l2_std_id standard;
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bool dv_timings;
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unsigned n_buffers;
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unsigned n_workers;
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unsigned desired_fps;
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size_t min_frame_size;
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bool persistent;
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unsigned timeout;
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unsigned error_delay;
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struct controls_t ctl;
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struct device_runtime_t *run;
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};
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struct device_t *device_init(void);
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void device_destroy(struct device_t *dev);
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int device_parse_format(const char *str);
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v4l2_std_id device_parse_standard(const char *str);
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int device_open(struct device_t *dev);
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void device_close(struct device_t *dev);
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int device_switch_capturing(struct device_t *dev, bool enable);
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int device_select(struct device_t *dev, bool *has_read, bool *has_write, bool *has_error);
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int device_grab_buffer(struct device_t *dev);
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int device_release_buffer(struct device_t *dev, unsigned index);
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int device_consume_event(struct device_t *dev);
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