/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 *

 * Copyright 2015 Jiang Zihao <zihao.jiang@yahoo.com>

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <freerdp/log.h>

#include <freerdp/codec/dsp.h>

#include "shadow.h"

#include "shadow_audin.h"

#include <freerdp/server/server-common.h>

#define TAG SERVER_TAG("shadow")

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT AudinServerOpening(audin_server_context* context)

{

	AUDIO_FORMAT* agreed_format = NULL;

	size_t i = 0, j = 0;

	for (i = 0; i < context->num_client_formats; i++)

	{

		for (j = 0; j < context->num_server_formats; j++)

		{

			if (audio_format_compatible(&context->server_formats[j], &context->client_formats[i]))

			{

				agreed_format = &context->server_formats[j];

				break;

			}

		}

		if (agreed_format != NULL)

			break;

	}

	if (agreed_format == NULL)

	{

		WLog_ERR(TAG, "Could not agree on a audio format with the server\n");

		return CHANNEL_RC_OK;

	}

	return IFCALLRESULT(ERROR_CALL_NOT_IMPLEMENTED, context->SelectFormat, context, i);

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT AudinServerOpenResult(audin_server_context* context, UINT32 result)

{

	WLog_INFO(TAG, "AUDIN open result %"PRIu32".\n", result);

	return CHANNEL_RC_OK;

}

/**

 * Function description

 *

 * @return 0 on success, otherwise a Win32 error code

 */

static UINT AudinServerReceiveSamples(audin_server_context* context, const AUDIO_FORMAT* format,

                                      wStream* buf, size_t nframes)

{

	rdpShadowClient* client = (rdpShadowClient*)context->data;

	rdpShadowSubsystem* subsystem = client->server->subsystem;

	if (!client->mayInteract)

		return CHANNEL_RC_OK;

	if (!IFCALLRESULT(TRUE, subsystem->AudinServerReceiveSamples, subsystem, client, format, buf,

	                  nframes))

		return ERROR_INTERNAL_ERROR;

	return CHANNEL_RC_OK;

}

BOOL shadow_client_audin_init(rdpShadowClient* client)

{

	audin_server_context* audin;

	audin = client->audin = audin_server_context_new(client->vcm);

	if (!audin)

		return FALSE;

	audin->data = client;

	if (client->subsystem->audinFormats)

	{

		size_t x;

		audin->server_formats = audio_formats_new(client->subsystem->nAudinFormats);

		if (!audin->server_formats)

			goto fail;

		for (x = 0; x < client->subsystem->nAudinFormats; x++)

		{

			if (!audio_format_copy(&client->subsystem->audinFormats[x], &audin->server_formats[x]))

				goto fail;

		}

		audin->num_server_formats = client->subsystem->nAudinFormats;

	}

	else

	{

		audin->num_server_formats = server_audin_get_formats(&audin->server_formats);

	}

	if (audin->num_server_formats < 1)

		goto fail;

	audin->dst_format = &audin->server_formats[0];

	audin->Opening = AudinServerOpening;

	audin->OpenResult = AudinServerOpenResult;

	audin->ReceiveSamples = AudinServerReceiveSamples;

	return TRUE;

fail:

	audin_server_context_free(audin);

	client->audin = NULL;

	return FALSE;

}

void shadow_client_audin_uninit(rdpShadowClient* client)

{

	if (client->audin)

	{

		audin_server_context_free(client->audin);

		client->audin = NULL;

	}

}