127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
#pragma once
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#include <linux/v4l2-subdev.h>
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#include <sys/wait.h>
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#include <stdbool.h>
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#include <stdint.h>
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typedef enum {
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MP_PIXEL_FMT_UNSUPPORTED,
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MP_PIXEL_FMT_BGGR8,
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MP_PIXEL_FMT_GBRG8,
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MP_PIXEL_FMT_GRBG8,
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MP_PIXEL_FMT_RGGB8,
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MP_PIXEL_FMT_BGGR10P,
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MP_PIXEL_FMT_GBRG10P,
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MP_PIXEL_FMT_GRBG10P,
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MP_PIXEL_FMT_RGGB10P,
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MP_PIXEL_FMT_UYVY,
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MP_PIXEL_FMT_YUYV,
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MP_PIXEL_FMT_MAX,
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} MPPixelFormat;
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const char *mp_pixel_format_to_str(MPPixelFormat pixel_format);
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MPPixelFormat mp_pixel_format_from_str(const char *str);
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MPPixelFormat mp_pixel_format_from_v4l_pixel_format(uint32_t v4l_pixel_format);
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MPPixelFormat mp_pixel_format_from_v4l_bus_code(uint32_t v4l_bus_code);
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uint32_t mp_pixel_format_to_v4l_pixel_format(MPPixelFormat pixel_format);
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uint32_t mp_pixel_format_to_v4l_bus_code(MPPixelFormat pixel_format);
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uint32_t mp_pixel_format_bits_per_pixel(MPPixelFormat pixel_format);
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uint32_t mp_pixel_format_width_to_bytes(MPPixelFormat pixel_format, uint32_t width);
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uint32_t mp_pixel_format_width_to_colors(MPPixelFormat pixel_format, uint32_t width);
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uint32_t mp_pixel_format_height_to_colors(MPPixelFormat pixel_format,
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uint32_t height);
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typedef struct {
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MPPixelFormat pixel_format;
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struct v4l2_fract frame_interval;
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uint32_t width;
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uint32_t height;
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} MPCameraMode;
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bool mp_camera_mode_is_equivalent(const MPCameraMode *m1, const MPCameraMode *m2);
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typedef struct {
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uint32_t index;
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uint8_t *data;
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int fd;
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} MPBuffer;
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typedef struct _MPCamera MPCamera;
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MPCamera *mp_camera_new(int video_fd, int subdev_fd);
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void mp_camera_free(MPCamera *camera);
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void mp_camera_add_bg_task(MPCamera *camera, pid_t pid);
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void mp_camera_wait_bg_tasks(MPCamera *camera);
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bool mp_camera_check_task_complete(MPCamera *camera, pid_t pid);
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bool mp_camera_is_subdev(MPCamera *camera);
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int mp_camera_get_video_fd(MPCamera *camera);
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int mp_camera_get_subdev_fd(MPCamera *camera);
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const MPCameraMode *mp_camera_get_mode(const MPCamera *camera);
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bool mp_camera_try_mode(MPCamera *camera, MPCameraMode *mode);
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bool mp_camera_set_mode(MPCamera *camera, MPCameraMode *mode);
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bool mp_camera_start_capture(MPCamera *camera);
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bool mp_camera_stop_capture(MPCamera *camera);
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bool mp_camera_is_capturing(MPCamera *camera);
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bool mp_camera_capture_buffer(MPCamera *camera, MPBuffer *buffer);
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bool mp_camera_release_buffer(MPCamera *camera, uint32_t buffer_index);
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typedef struct _MPCameraModeList MPCameraModeList;
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MPCameraModeList *mp_camera_list_supported_modes(MPCamera *camera);
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MPCameraModeList *mp_camera_list_available_modes(MPCamera *camera);
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MPCameraMode *mp_camera_mode_list_get(MPCameraModeList *list);
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MPCameraModeList *mp_camera_mode_list_next(MPCameraModeList *list);
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void mp_camera_mode_list_free(MPCameraModeList *list);
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typedef struct {
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uint32_t id;
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uint32_t type;
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char name[32];
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int32_t min;
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int32_t max;
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int32_t step;
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int32_t default_value;
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uint32_t flags;
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uint32_t element_size;
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uint32_t element_count;
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uint32_t dimensions_count;
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uint32_t dimensions[V4L2_CTRL_MAX_DIMS];
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} MPControl;
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const char *mp_control_id_to_str(uint32_t id);
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const char *mp_control_type_to_str(uint32_t type);
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typedef struct _MPControlList MPControlList;
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MPControlList *mp_camera_list_controls(MPCamera *camera);
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MPControl *mp_control_list_get(MPControlList *list);
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MPControlList *mp_control_list_next(MPControlList *list);
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void mp_control_list_free(MPControlList *list);
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bool mp_camera_query_control(MPCamera *camera, uint32_t id, MPControl *control);
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bool mp_camera_control_try_int32(MPCamera *camera, uint32_t id, int32_t *v);
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bool mp_camera_control_set_int32(MPCamera *camera, uint32_t id, int32_t v);
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int32_t mp_camera_control_get_int32(MPCamera *camera, uint32_t id);
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// set the value in the background, discards result
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pid_t mp_camera_control_set_int32_bg(MPCamera *camera, uint32_t id, int32_t v);
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bool mp_camera_control_try_bool(MPCamera *camera, uint32_t id, bool *v);
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bool mp_camera_control_set_bool(MPCamera *camera, uint32_t id, bool v);
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bool mp_camera_control_get_bool(MPCamera *camera, uint32_t id);
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// set the value in the background, discards result
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pid_t mp_camera_control_set_bool_bg(MPCamera *camera, uint32_t id, bool v);
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