140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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*
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* Copyright 2015 Jiang Zihao <zihao.jiang@yahoo.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <freerdp/log.h>
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#include "shadow.h"
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#include "shadow_audin.h"
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#define TAG SERVER_TAG("shadow")
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/* Default supported audio formats */
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static const AUDIO_FORMAT default_supported_audio_formats[] =
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{
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{ WAVE_FORMAT_PCM, 2, 44100, 176400, 4, 16, 0, NULL },
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{ WAVE_FORMAT_ALAW, 2, 22050, 44100, 2, 8, 0, NULL }
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};
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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static UINT AudinServerOpening(audin_server_context* context)
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{
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AUDIO_FORMAT* agreed_format = NULL;
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int i = 0, j = 0;
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for (i = 0; i < context->num_client_formats; i++)
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{
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for (j = 0; j < context->num_server_formats; j++)
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{
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if ((context->client_formats[i].wFormatTag == context->server_formats[j].wFormatTag) &&
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(context->client_formats[i].nChannels == context->server_formats[j].nChannels) &&
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(context->client_formats[i].nSamplesPerSec == context->server_formats[j].nSamplesPerSec))
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{
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agreed_format = (AUDIO_FORMAT*) &context->server_formats[j];
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break;
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}
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}
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if (agreed_format != NULL)
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break;
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}
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if (agreed_format == NULL)
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{
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WLog_ERR(TAG, "Could not agree on a audio format with the server\n");
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return CHANNEL_RC_OK;
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}
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context->SelectFormat(context, i);
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return CHANNEL_RC_OK;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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static UINT AudinServerOpenResult(audin_server_context* context, UINT32 result)
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{
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WLog_INFO(TAG, "AUDIN open result %u.\n", result);
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return CHANNEL_RC_OK;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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static UINT AudinServerReceiveSamples(audin_server_context* context, const void* buf, int nframes)
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{
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rdpShadowClient* client = (rdpShadowClient* )context->data;
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rdpShadowSubsystem* subsystem = client->server->subsystem;
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if (!client->mayInteract)
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return CHANNEL_RC_OK;
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if (subsystem->AudinServerReceiveSamples)
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subsystem->AudinServerReceiveSamples(subsystem, buf, nframes);
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return CHANNEL_RC_OK;
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}
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int shadow_client_audin_init(rdpShadowClient* client)
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{
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audin_server_context* audin;
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audin = client->audin = audin_server_context_new(client->vcm);
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if (!audin)
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{
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return 0;
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}
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audin->data = client;
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if (client->subsystem->audinFormats)
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{
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audin->server_formats = client->subsystem->audinFormats;
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audin->num_server_formats = client->subsystem->nAudinFormats;
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}
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else
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{
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/* Set default audio formats. */
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audin->server_formats = default_supported_audio_formats;
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audin->num_server_formats = sizeof(default_supported_audio_formats) / sizeof(default_supported_audio_formats[0]);
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}
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audin->dst_format = audin->server_formats[0];
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audin->Opening = AudinServerOpening;
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audin->OpenResult = AudinServerOpenResult;
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audin->ReceiveSamples = AudinServerReceiveSamples;
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return 1;
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}
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void shadow_client_audin_uninit(rdpShadowClient* client)
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{
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if (client->audin)
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{
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audin_server_context_free(client->audin);
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client->audin = NULL;
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}
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}
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