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https://github.com/Harshit-Dhanwalkar/AsciiCam.git
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50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
#ifndef CAPTURE_H
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#define CAPTURE_H
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#include <stddef.h>
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#include <stdint.h>
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typedef struct webcam_impl webcam_impl_t;
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typedef struct {
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int fd; /* Linux: V4L2 fd. macOS: -1 (unused externally) */
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int width;
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int height;
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void *buffer;
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webcam_impl_t *impl;
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} webcam_t;
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// Initialize webcam
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// On Linux: device = "/dev/video0"
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// On macOS: device = NULL (uses system default camera) or a device name string
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int webcam_init(webcam_t *cam, const char *device, int width, int height);
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// Wait for frame to be ready
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int webcam_wait_frame(webcam_t *cam, int timeout_ms);
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// Capture frame, dequeue buffer, fill grayscale output buffer
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int webcam_capture_frame(webcam_t *cam, uint8_t *gray_buffer);
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// Re‑queue buffer
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int webcam_requeue_buffer(webcam_t *cam);
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// Stop streaming and clean up resources
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void webcam_cleanup(webcam_t *cam);
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// Hardware camera controls.
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int webcam_set_auto_exposure(webcam_t *cam, int enable);
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int webcam_set_auto_white_balance(webcam_t *cam, int enable);
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int webcam_adjust_exposure(webcam_t *cam, int delta, int *out_value);
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int webcam_adjust_contrast(webcam_t *cam, int delta, int *out_value);
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int webcam_adjust_white_balance(webcam_t *cam, int delta, int *out_value);
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int webcam_get_exposure(webcam_t *cam, int *value);
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int webcam_get_contrast(webcam_t *cam, int *value);
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int webcam_get_white_balance(webcam_t *cam, int *value);
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int webcam_get_exposure_range(webcam_t *cam, int *min, int *max);
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int webcam_get_contrast_range(webcam_t *cam, int *min, int *max);
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int webcam_get_white_balance_range(webcam_t *cam, int *min, int *max);
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#endif
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