#include "screencast_common.h"
#include <assert.h>

void randname(char *buf) {
	struct timespec ts;
	clock_gettime(CLOCK_REALTIME, &ts);
	long r = ts.tv_nsec;
	for (int i = 0; i < 6; ++i) {
		assert(buf[i] == 'X');
		buf[i] = 'A'+(r&15)+(r&16)*2;
		r >>= 5;
	}
}

enum spa_video_format xdpw_format_pw_from_wl_shm(void *data) {
	struct xdpw_screencast_instance *cast = data;

	if (cast->ctx->forced_pixelformat) {
		if (strcmp(cast->ctx->forced_pixelformat, "BGRx") == 0) {
			return SPA_VIDEO_FORMAT_BGRx;
		}
		if (strcmp(cast->ctx->forced_pixelformat, "RGBx") == 0) {
			return SPA_VIDEO_FORMAT_RGBx;
		}
	}

	switch (cast->simple_frame.format) {
	case WL_SHM_FORMAT_ARGB8888:
		return SPA_VIDEO_FORMAT_BGRA;
	case WL_SHM_FORMAT_XRGB8888:
		return SPA_VIDEO_FORMAT_BGRx;
	case WL_SHM_FORMAT_RGBA8888:
		return SPA_VIDEO_FORMAT_ABGR;
	case WL_SHM_FORMAT_RGBX8888:
		return SPA_VIDEO_FORMAT_xBGR;
	case WL_SHM_FORMAT_ABGR8888:
		return SPA_VIDEO_FORMAT_RGBA;
	case WL_SHM_FORMAT_XBGR8888:
		return SPA_VIDEO_FORMAT_RGBx;
	case WL_SHM_FORMAT_BGRA8888:
		return SPA_VIDEO_FORMAT_ARGB;
	case WL_SHM_FORMAT_BGRX8888:
		return SPA_VIDEO_FORMAT_xRGB;
	case WL_SHM_FORMAT_NV12:
		return SPA_VIDEO_FORMAT_NV12;
	default:
		abort();
	}
}