mirror of
https://github.com/pikvm/ustreamer.git
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158 lines
4.3 KiB
C
158 lines
4.3 KiB
C
/*****************************************************************************
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# #
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# uStreamer - Lightweight and fast MJPEG-HTTP streamer. #
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# #
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# Copyright (C) 2018-2022 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 <stdlib.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include <strings.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <assert.h>
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#include <sys/select.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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#include <pthread.h>
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#include <linux/videodev2.h>
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#include <linux/v4l2-controls.h>
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#include "../libs/tools.h"
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#include "../libs/logging.h"
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#include "../libs/threading.h"
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#include "../libs/frame.h"
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#include "xioctl.h"
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#define VIDEO_MIN_WIDTH ((unsigned)160)
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#define VIDEO_MAX_WIDTH ((unsigned)10240)
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#define VIDEO_MIN_HEIGHT ((unsigned)120)
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#define VIDEO_MAX_HEIGHT ((unsigned)4320)
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#define VIDEO_MAX_FPS ((unsigned)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, MJPEG, JPEG"
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#define IO_METHOD_UNKNOWN -1
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#define IO_METHODS_STR "MMAP, USERPTR"
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typedef struct {
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frame_s raw;
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struct v4l2_buffer buf;
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int dma_fd;
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bool grabbed;
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} hw_buffer_s;
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typedef struct {
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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 stride;
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unsigned hw_fps;
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unsigned jpeg_quality;
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size_t raw_size;
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unsigned n_bufs;
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hw_buffer_s *hw_bufs;
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bool capturing;
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bool persistent_timeout_reported;
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} device_runtime_s;
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typedef enum {
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CTL_MODE_NONE = 0,
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CTL_MODE_VALUE,
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CTL_MODE_AUTO,
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CTL_MODE_DEFAULT,
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} control_mode_e;
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typedef struct {
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control_mode_e mode;
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int value;
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} control_s;
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typedef struct {
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control_s brightness;
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control_s contrast;
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control_s saturation;
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control_s hue;
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control_s gamma;
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control_s sharpness;
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control_s backlight_compensation;
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control_s white_balance;
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control_s gain;
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control_s color_effect;
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control_s rotate;
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control_s flip_vertical;
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control_s flip_horizontal;
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} controls_s;
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typedef struct {
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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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unsigned jpeg_quality;
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v4l2_std_id standard;
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enum v4l2_memory io_method;
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bool dv_timings;
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unsigned n_bufs;
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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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controls_s ctl;
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device_runtime_s *run;
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} device_s;
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device_s *device_init(void);
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void device_destroy(device_s *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_parse_io_method(const char *str);
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int device_open(device_s *dev);
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void device_close(device_s *dev);
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int device_export_to_dma(device_s *dev);
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int device_switch_capturing(device_s *dev, bool enable);
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int device_select(device_s *dev, bool *has_read, bool *has_write, bool *has_error);
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int device_grab_buffer(device_s *dev, hw_buffer_s **hw);
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int device_release_buffer(device_s *dev, hw_buffer_s *hw);
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int device_consume_event(device_s *dev);
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