FreeRDP/server/shadow/shadow_audin.c

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/**
* 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 "shadow.h"
#include "shadow_audin.h"
#define TAG SERVER_TAG("shadow")
/* Default supported audio formats */
static const AUDIO_FORMAT default_supported_audio_formats[] =
{
{ WAVE_FORMAT_PCM, 2, 44100, 176400, 4, 16, 0, NULL },
{ WAVE_FORMAT_ALAW, 2, 22050, 44100, 2, 8, 0, NULL }
};
static void AudinServerOpening(audin_server_context* context)
{
AUDIO_FORMAT* agreed_format = NULL;
int i = 0, j = 0;
for (i = 0; i < context->num_client_formats; i++)
{
for (j = 0; j < context->num_server_formats; j++)
{
if ((context->client_formats[i].wFormatTag == context->server_formats[j].wFormatTag) &&
(context->client_formats[i].nChannels == context->server_formats[j].nChannels) &&
(context->client_formats[i].nSamplesPerSec == context->server_formats[j].nSamplesPerSec))
{
agreed_format = (AUDIO_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;
}
context->SelectFormat(context, i);
}
static void AudinServerOpenResult(audin_server_context* context, UINT32 result)
{
WLog_INFO(TAG, "AUDIN open result %u.\n", result);
}
static void AudinServerReceiveSamples(audin_server_context* context, const void* buf, int nframes)
{
rdpShadowClient* client = (rdpShadowClient* )context->data;
rdpShadowSubsystem* subsystem = client->server->subsystem;
if (!client->mayInteract)
return;
if (subsystem->AudinServerReceiveSamples)
subsystem->AudinServerReceiveSamples(subsystem, buf, nframes);
}
int shadow_client_audin_init(rdpShadowClient* client)
{
audin_server_context* audin;
audin = client->audin = audin_server_context_new(client->vcm);
if (!audin)
{
return 0;
}
audin->data = client;
if (client->subsystem->audinFormats)
{
audin->server_formats = client->subsystem->audinFormats;
audin->num_server_formats = client->subsystem->nAudinFormats;
}
else
{
/* Set default audio formats. */
audin->server_formats = default_supported_audio_formats;
audin->num_server_formats = sizeof(default_supported_audio_formats) / sizeof(default_supported_audio_formats[0]);
}
audin->dst_format = audin->server_formats[0];
audin->Opening = AudinServerOpening;
audin->OpenResult = AudinServerOpenResult;
audin->ReceiveSamples = AudinServerReceiveSamples;
return 1;
}
void shadow_client_audin_uninit(rdpShadowClient* client)
{
if (client->audin)
{
audin_server_context_free(client->audin);
client->audin = NULL;
}
}