Make device/buffer_list* be generic

device/buffer_list.h

@@ -0,0 +1,44 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <linux/videodev2.h>
+
+typedef struct buffer_s buffer_t;
+typedef struct device_s device_t;
+struct pollfd;
+
+typedef struct buffer_list_s {
+  char *name;
+  device_t *device;
+  buffer_t **bufs;
+  int nbufs;
+
+  bool do_mmap, do_capture;
+
+  struct {
+    bool do_mplanes;
+    int type;
+  } v4l2;
+
+  unsigned fmt_width, fmt_height, fmt_format, fmt_bytesperline, fmt_interval_us;
+  bool do_timestamps;
+
+  uint64_t last_enqueued_us, last_dequeued_us;
+
+  bool streaming;
+  int frames;
+} buffer_list_t;
+
+buffer_list_t *buffer_list_open(const char *name, struct device_s *dev, bool do_capture, bool do_mmap);
+void buffer_list_close(buffer_list_t *buf_list);
+
+int buffer_list_set_stream(buffer_list_t *buf_list, bool do_on);
+int buffer_list_set_format(buffer_list_t *buf_list, unsigned width, unsigned height, unsigned format, unsigned bytesperline);
+int buffer_list_set_buffers(buffer_list_t *buf_list, int nbufs);
+
+int buffer_list_pollfd(buffer_list_t *buf_list, struct pollfd *pollfd, bool can_dequeue);
+buffer_t *buffer_list_find_slot(buffer_list_t *buf_list);
+buffer_t *buffer_list_dequeue(buffer_list_t *buf_list);
+int buffer_list_count_enqueued(buffer_list_t *buf_list);
+int buffer_list_enqueue(buffer_list_t *buf_list, buffer_t *dma_buf);