/*
 * Copyright (c) 2016 Florent Revest, <florent.revest@free-electrons.com>
 *               2007 Intel Corporation. All Rights Reserved.
 *
 * 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 "sunxi_cedrus.h"
#include "picture.h"
#include "buffer.h"
#include "context.h"
#include "surface.h"
#include "config.h"

#include "mpeg2.h"

#include <assert.h>
#include <string.h>

#include <errno.h>

#include <sys/ioctl.h>

#include <linux/videodev2.h>

#include "v4l2.h"
#include "media.h"
#include "utils.h"

static VAStatus codec_store_buffer(struct sunxi_cedrus_driver_data *driver_data,
	VAProfile profile, struct object_surface *surface_object,
	struct object_buffer *buffer_object)
{
	switch (buffer_object->type) {
	case VASliceDataBufferType:
		/*
		 * Since there is no guarantee that the allocation
		 * order is the same as the submission order (via
		 * RenderPicture), we can't use a V4L2 buffer directly
		 * and have to copy from a regular buffer.
		 */
		memcpy(surface_object->source_data + surface_object->slices_size, buffer_object->data, buffer_object->size * buffer_object->count);
		surface_object->slices_size += buffer_object->size * buffer_object->count;
		break;

	case VAPictureParameterBufferType:
		switch (profile) {
		case VAProfileMPEG2Simple:
		case VAProfileMPEG2Main:
			memcpy(&surface_object->params.mpeg2.picture, buffer_object->data, sizeof(surface_object->params.mpeg2.picture));
			break;
		default:
			break;
		}
		break;

	default:
		break;
	}

	return VA_STATUS_SUCCESS;
}

static VAStatus codec_set_controls(struct sunxi_cedrus_driver_data *driver_data,
	VAProfile profile, struct object_surface *surface_object)
{
	int rc;

	switch (profile) {
	case VAProfileMPEG2Simple:
	case VAProfileMPEG2Main:
		rc = mpeg2_set_controls(driver_data, surface_object);
		if (rc < 0)
			return VA_STATUS_ERROR_OPERATION_FAILED;
		break;

	default:
		return VA_STATUS_ERROR_UNSUPPORTED_PROFILE;
	}

	return VA_STATUS_SUCCESS;
}

VAStatus SunxiCedrusBeginPicture(VADriverContextP context,
	VAContextID context_id, VASurfaceID surface_id)
{
	struct sunxi_cedrus_driver_data *driver_data =
		(struct sunxi_cedrus_driver_data *) context->pDriverData;
	struct object_context *context_object;
	struct object_surface *surface_object;

	context_object = CONTEXT(context_id);
	if (context_object == NULL)
		return VA_STATUS_ERROR_INVALID_CONTEXT;

	surface_object = SURFACE(surface_id);
	if (surface_object == NULL)
		return VA_STATUS_ERROR_INVALID_SURFACE;

	if (surface_object->status == VASurfaceRendering)
		SunxiCedrusSyncSurface(context, surface_id);

	surface_object->status = VASurfaceRendering;
	context_object->render_surface_id = surface_id;

	return VA_STATUS_SUCCESS;
}

VAStatus SunxiCedrusRenderPicture(VADriverContextP context,
	VAContextID context_id, VABufferID *buffers_ids, int buffers_count)
{
	struct sunxi_cedrus_driver_data *driver_data =
		(struct sunxi_cedrus_driver_data *) context->pDriverData;
	struct object_context *context_object;
	struct object_config *config_object;
	struct object_surface *surface_object;
	struct object_buffer *buffer_object;
	int rc;
	int i;

	context_object = CONTEXT(context_id);
	if (context_object == NULL)
		return VA_STATUS_ERROR_INVALID_CONTEXT;

	config_object = CONFIG(context_object->config_id);
	if (config_object == NULL)
		return VA_STATUS_ERROR_INVALID_CONFIG;

	surface_object = SURFACE(context_object->render_surface_id);
	if (surface_object == NULL)
		return VA_STATUS_ERROR_INVALID_SURFACE;

	for (i = 0; i < buffers_count; i++) {
		buffer_object = BUFFER(buffers_ids[i]);
		if (buffer_object == NULL)
			return VA_STATUS_ERROR_INVALID_BUFFER;

		rc = codec_store_buffer(driver_data, config_object->profile, surface_object, buffer_object);
		if (rc != VA_STATUS_SUCCESS)
			return rc;
	}

	return VA_STATUS_SUCCESS;
}

VAStatus SunxiCedrusEndPicture(VADriverContextP context,
	VAContextID context_id)
{
	struct sunxi_cedrus_driver_data *driver_data =
		(struct sunxi_cedrus_driver_data *) context->pDriverData;
	struct object_context *context_object;
	struct object_config *config_object;
	struct object_surface *surface_object;
	int request_fd;
	VAStatus status;
	int rc;

	context_object = CONTEXT(context_id);
	if (context_object == NULL)
		return VA_STATUS_ERROR_INVALID_CONTEXT;

	config_object = CONFIG(context_object->config_id);
	if (config_object == NULL)
		return VA_STATUS_ERROR_INVALID_CONFIG;

	surface_object = SURFACE(context_object->render_surface_id);
	if (surface_object == NULL)
		return VA_STATUS_ERROR_INVALID_SURFACE;

	request_fd = surface_object->request_fd;
	if (request_fd < 0) {
		request_fd = media_request_alloc(driver_data->media_fd);
		if (request_fd < 0)
			return VA_STATUS_ERROR_OPERATION_FAILED;

		surface_object->request_fd = request_fd;
	}

	rc = codec_set_controls(driver_data, config_object->profile, surface_object);
	if (rc != VA_STATUS_SUCCESS)
		return rc;

	rc = v4l2_queue_buffer(driver_data->video_fd, -1, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, surface_object->destination_index, 0, surface_object->destination_buffers_count);
	if (rc < 0)
		return VA_STATUS_ERROR_OPERATION_FAILED;

	rc = v4l2_queue_buffer(driver_data->video_fd, request_fd, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE, surface_object->source_index, surface_object->slices_size, 1);
	if (rc < 0)
		return VA_STATUS_ERROR_OPERATION_FAILED;

	surface_object->slices_size = 0;

	status = SunxiCedrusSyncSurface(context, context_object->render_surface_id);
	if (status != VA_STATUS_SUCCESS)
		return status;

	context_object->render_surface_id = VA_INVALID_ID;

	return VA_STATUS_SUCCESS;
}