/*
 * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
 * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>

#include "request.h"
#include "utils.h"

void request_log(const char *format, ...)
{
	va_list arguments;
	static FILE *trace_fp;

	fprintf(stderr, "%s: ", V4L2_REQUEST_STR_VENDOR);

	va_start(arguments, format);
	vfprintf(stderr, format, arguments);
	va_end(arguments);

	/* Fourier-local: also tee to /tmp/libva-fourier.log so messages are
	 * visible from sandboxed GPU processes (Chromium etc.) where stderr
	 * is redirected. Append-mode, lazy-open. */
	if (trace_fp == NULL)
		trace_fp = fopen("/tmp/libva-fourier.log", "a");
	if (trace_fp != NULL) {
		fprintf(trace_fp, "%s: ", V4L2_REQUEST_STR_VENDOR);
		va_start(arguments, format);
		vfprintf(trace_fp, format, arguments);
		va_end(arguments);
		fflush(trace_fp);
	}
}