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https://github.com/pikvm/ustreamer.git
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5f7c556697
(cherry picked from commit 17a448223c0dd1cf420ba9a79232f433ff11c4b5) Signed-off-by: Maxim Devaev <mdevaev@gmail.com>
159 lines
4.6 KiB
C
159 lines
4.6 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) 2018-2023 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 "tools.h"
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#include "array.h"
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#include "logging.h"
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#include "threading.h"
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#include "frame.h"
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#include "xioctl.h"
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#define US_VIDEO_MIN_WIDTH ((unsigned)160)
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#define US_VIDEO_MAX_WIDTH ((unsigned)15360)
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#define US_VIDEO_MIN_HEIGHT ((unsigned)120)
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#define US_VIDEO_MAX_HEIGHT ((unsigned)8640)
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#define US_VIDEO_MAX_FPS ((unsigned)120)
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#define US_STANDARD_UNKNOWN V4L2_STD_UNKNOWN
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#define US_STANDARDS_STR "PAL, NTSC, SECAM"
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#define US_FORMAT_UNKNOWN -1
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#define US_FORMATS_STR "YUYV, YVYU, UYVY, RGB565, RGB24, BGR24, MJPEG, JPEG"
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#define US_IO_METHOD_UNKNOWN -1
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#define US_IO_METHODS_STR "MMAP, USERPTR"
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typedef struct {
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us_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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} us_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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float hz;
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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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us_hw_buffer_s *hw_bufs;
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enum v4l2_buf_type capture_type;
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bool capture_mplane;
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bool capturing;
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bool persistent_timeout_reported;
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} us_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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} us_control_mode_e;
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typedef struct {
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us_control_mode_e mode;
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int value;
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} us_control_s;
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typedef struct {
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us_control_s brightness;
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us_control_s contrast;
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us_control_s saturation;
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us_control_s hue;
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us_control_s gamma;
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us_control_s sharpness;
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us_control_s backlight_compensation;
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us_control_s white_balance;
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us_control_s gain;
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us_control_s color_effect;
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us_control_s rotate;
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us_control_s flip_vertical;
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us_control_s flip_horizontal;
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} us_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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us_controls_s ctl;
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us_device_runtime_s *run;
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} us_device_s;
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us_device_s *us_device_init(void);
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void us_device_destroy(us_device_s *dev);
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int us_device_parse_format(const char *str);
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v4l2_std_id us_device_parse_standard(const char *str);
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int us_device_parse_io_method(const char *str);
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int us_device_open(us_device_s *dev);
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void us_device_close(us_device_s *dev);
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int us_device_export_to_dma(us_device_s *dev);
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int us_device_switch_capturing(us_device_s *dev, bool enable);
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int us_device_select(us_device_s *dev, bool *has_read, bool *has_write, bool *has_error);
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int us_device_grab_buffer(us_device_s *dev, us_hw_buffer_s **hw);
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int us_device_release_buffer(us_device_s *dev, us_hw_buffer_s *hw);
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int us_device_consume_event(us_device_s *dev);
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