int avfilter_config_links(AVFilterContext *filter)
{
int (*config_link)(AVFilterLink *);
unsigned i;
int ret;
for (i = 0; i < filter->input_count; i ++) {
AVFilterLink *link = filter->inputs[i];
if (!link) continue;
switch (link->init_state) {
case AVLINK_INIT:
continue;
case AVLINK_STARTINIT:
av_log(filter, AV_LOG_INFO, "circular filter chain detected\n");
return 0;
case AVLINK_UNINIT:
link->init_state = AVLINK_STARTINIT;
if ((ret = avfilter_config_links(link->src)) < 0)
return ret;
if (!(config_link = link->srcpad->config_props))
config_link = avfilter_default_config_output_link;
if ((ret = config_link(link)) < 0)
return ret;
if (link->time_base.num == 0 && link->time_base.den == 0)
link->time_base = link->src && link->src->input_count ?
link->src->inputs[0]->time_base : AV_TIME_BASE_Q;
if (link->sample_aspect_ratio.num == 0 && link->sample_aspect_ratio.den == 0)
link->sample_aspect_ratio = link->src->input_count ?
link->src->inputs[0]->sample_aspect_ratio : (AVRational){1,1};
if ((config_link = link->dstpad->config_props))
if ((ret = config_link(link)) < 0)
return ret;
link->init_state = AVLINK_INIT;
}
}
return 0;
}
int avfilter_config_links(AVFilterContext *filter)
{
int (*config_link)(AVFilterLink *);
unsigned i;
int ret;
for (i = 0; i < filter->nb_inputs; i ++) {
AVFilterLink *link = filter->inputs[i];
AVFilterLink *inlink;
if (!link) continue;
if (!link->src || !link->dst) {
av_log(filter, AV_LOG_ERROR,
"Not all input and output are properly linked (%d).\n", i);
return AVERROR(EINVAL);
}
inlink = link->src->nb_inputs ? link->src->inputs[0] : NULL;
link->current_pts = AV_NOPTS_VALUE;
switch (link->init_state) {
case AVLINK_INIT:
continue;
case AVLINK_STARTINIT:
av_log(filter, AV_LOG_INFO, "circular filter chain detected\n");
return 0;
case AVLINK_UNINIT:
link->init_state = AVLINK_STARTINIT;
if ((ret = avfilter_config_links(link->src)) < 0)
return ret;
if (!(config_link = link->srcpad->config_props)) {
if (link->src->nb_inputs != 1) {
av_log(link->src, AV_LOG_ERROR, "Source filters and filters "
"with more than one input "
"must set config_props() "
"callbacks on all outputs\n");
return AVERROR(EINVAL);
}
} else if ((ret = config_link(link)) < 0) {
av_log(link->src, AV_LOG_ERROR,
"Failed to configure output pad on %s\n",
link->src->name);
return ret;
}
switch (link->type) {
case AVMEDIA_TYPE_VIDEO:
if (!link->time_base.num && !link->time_base.den)
link->time_base = inlink ? inlink->time_base : AV_TIME_BASE_Q;
if (!link->sample_aspect_ratio.num && !link->sample_aspect_ratio.den)
link->sample_aspect_ratio = inlink ?
inlink->sample_aspect_ratio : (AVRational){1,1};
if (inlink && !link->frame_rate.num && !link->frame_rate.den)
link->frame_rate = inlink->frame_rate;
if (inlink) {
if (!link->w)
link->w = inlink->w;
if (!link->h)
link->h = inlink->h;
} else if (!link->w || !link->h) {
av_log(link->src, AV_LOG_ERROR,
"Video source filters must set their output link's "
"width and height\n");
return AVERROR(EINVAL);
}
break;
case AVMEDIA_TYPE_AUDIO:
if (inlink) {
if (!link->time_base.num && !link->time_base.den)
link->time_base = inlink->time_base;
}
if (!link->time_base.num && !link->time_base.den)
link->time_base = (AVRational) {1, link->sample_rate};
}
if ((config_link = link->dstpad->config_props))
if ((ret = config_link(link)) < 0) {
av_log(link->dst, AV_LOG_ERROR,
"Failed to configure input pad on %s\n",
link->dst->name);
return ret;
}
link->init_state = AVLINK_INIT;
}
}
return 0;
}
int avfilter_config_links(AVFilterContext *filter)
{
int (*config_link)(AVFilterLink *);
unsigned i;
int ret;
for (i = 0; i < filter->nb_inputs; i ++) {
AVFilterLink *link = filter->inputs[i];
if (!link) continue;
switch (link->init_state) {
case AVLINK_INIT:
continue;
case AVLINK_STARTINIT:
av_log(filter, AV_LOG_INFO, "circular filter chain detected\n");
return 0;
case AVLINK_UNINIT:
link->init_state = AVLINK_STARTINIT;
if ((ret = avfilter_config_links(link->src)) < 0)
return ret;
if (!(config_link = link->srcpad->config_props)) {
if (link->src->nb_inputs != 1) {
av_log(link->src, AV_LOG_ERROR, "Source filters and filters "
"with more than one input "
"must set config_props() "
"callbacks on all outputs\n");
return AVERROR(EINVAL);
}
} else if ((ret = config_link(link)) < 0) {
av_log(link->src, AV_LOG_ERROR,
"Failed to configure output pad on %s\n",
link->src->name);
return ret;
}
if (link->time_base.num == 0 && link->time_base.den == 0)
link->time_base = link->src && link->src->nb_inputs ?
link->src->inputs[0]->time_base : AV_TIME_BASE_Q;
if (link->type == AVMEDIA_TYPE_VIDEO) {
if (!link->sample_aspect_ratio.num && !link->sample_aspect_ratio.den)
link->sample_aspect_ratio = link->src->nb_inputs ?
link->src->inputs[0]->sample_aspect_ratio : (AVRational){1,1};
if (link->src->nb_inputs) {
if (!link->w)
link->w = link->src->inputs[0]->w;
if (!link->h)
link->h = link->src->inputs[0]->h;
} else if (!link->w || !link->h) {
av_log(link->src, AV_LOG_ERROR,
"Video source filters must set their output link's "
"width and height\n");
return AVERROR(EINVAL);
}
}
if ((config_link = link->dstpad->config_props))
if ((ret = config_link(link)) < 0) {
av_log(link->src, AV_LOG_ERROR,
"Failed to configure input pad on %s\n",
link->dst->name);
return ret;
}
link->init_state = AVLINK_INIT;
}
}
return 0;
}
int avfilter_config_links(AVFilterContext *filter)
{
int (*config_link)(AVFilterLink *);
unsigned i;
int ret;
for (i = 0; i < filter->nb_inputs; i ++) {
AVFilterLink *link = filter->inputs[i];
if (!link) continue;
if (!link->src || !link->dst) {
av_log(filter, AV_LOG_ERROR,
"Not all input and output are properly linked (%d).\n", i);
return AVERROR(EINVAL);
}
switch (link->init_state) {
case AVLINK_INIT:
continue;
case AVLINK_STARTINIT:
av_log(filter, AV_LOG_INFO, "circular filter chain detected\n");
return 0;
case AVLINK_UNINIT:
link->init_state = AVLINK_STARTINIT;
if ((ret = avfilter_config_links(link->src)) < 0)
return ret;
if (!(config_link = link->srcpad->config_props)) {
if (link->src->nb_inputs != 1) {
av_log(link->src, AV_LOG_ERROR, "Source filters and filters "
"with more than one input "
"must set config_props() "
"callbacks on all outputs\n");
return AVERROR(EINVAL);
}
} else if ((ret = config_link(link)) < 0) {
av_log(link->src, AV_LOG_ERROR,
"Failed to configure output pad on %s\n",
link->src->name);
return ret;
}
if (link->time_base.num == 0 && link->time_base.den == 0)
link->time_base = link->src->nb_inputs ?
link->src->inputs[0]->time_base : AV_TIME_BASE_Q;
if (link->type == AVMEDIA_TYPE_VIDEO) {
if (!link->sample_aspect_ratio.num && !link->sample_aspect_ratio.den)
link->sample_aspect_ratio = link->src->nb_inputs ?
link->src->inputs[0]->sample_aspect_ratio : (AVRational){1,1};
if (link->src->nb_inputs) {
if (!link->frame_rate.num && !link->frame_rate.den)
link->frame_rate = link->src->inputs[0]->frame_rate;
if (!link->w)
link->w = link->src->inputs[0]->w;
if (!link->h)
link->h = link->src->inputs[0]->h;
} else if (!link->w || !link->h) {
av_log(link->src, AV_LOG_ERROR,
"Video source filters must set their output link's "
"width and height\n");
return AVERROR(EINVAL);
}
}
if (link->src->nb_inputs && link->src->inputs[0]->hw_frames_ctx &&
!(link->src->filter->flags_internal & FF_FILTER_FLAG_HWFRAME_AWARE)) {
av_assert0(!link->hw_frames_ctx &&
"should not be set by non-hwframe-aware filter");
link->hw_frames_ctx = av_buffer_ref(link->src->inputs[0]->hw_frames_ctx);
if (!link->hw_frames_ctx)
return AVERROR(ENOMEM);
}
if ((config_link = link->dstpad->config_props))
if ((ret = config_link(link)) < 0) {
av_log(link->dst, AV_LOG_ERROR,
"Failed to configure input pad on %s\n",
link->dst->name);
return ret;
}
link->init_state = AVLINK_INIT;
}
}
return 0;
}
PUBLIC int application_layer_init(uint16_t num_host)
{
int option =0, tam_window =0, ret_send=0, ret_recived=0, tam_buffer=0;
uint16_t ips =0, dest=0, dest_ips=0, ret_connect =0, sp;
char file_name[50];
int l, c, d, mtu;
uint16_t remote_host;
//entra num loop at� o usuário solicitar o termino do programa
while(option != 14)
{
LOG("BEM VINDO A CAMADA DE APLICACAO \n1 - Abrir ponto de servico(<void>)\n2 - Fechar ponto de servico(<IPS>)\n3 - conectar(<No de Destino>,<IPS>,<tamanho da janela>)\n4 - Fechar conexão do ponto de servico(<IPS>)\n5 - enviar(<IPS>)\n6 - receber(<IPS>)\n7 - baixar(<IPS>, <nome_arquivo>)\n8 - enviar arquivo(<IPS>)\n9 - Exibe tabela de rotas\n10 - Configurar o adulterador\n11 - Desabilitar enlace\n12 - Habilitar enlace\n13 - Depurar\n14 - Sair da camada de aplicacao\n Informe o numero do que deseja executar: ");
scanf("%d",&option);
__fpurge(stdin);
switch(option)
{
case 1: //responsavel por abertura do ponto de servico
LOG("Solicitacao de ponto de servico realizada!");
ips = alloc_service_point();
LOG ("Numero do ponto de servico: %u\n", ips);
break;
case 2: //responsavel por fechamento do ponto de servico
LOG("Informe o ips:");
scanf("%hd",&sp);
__fpurge(stdin);
dalloc_service_point(sp);
LOG ("Ponto de servico %u fechado com sucesso!\n", sp);
break;
case 3: //responsavel por conectar
LOG("Solicitacao para conectar!");
LOG("Informe o ips origem:");
scanf("%hd",&sp);
__fpurge(stdin);
LOG("Informe o destino (no):");
scanf("%hd",&dest);
__fpurge(stdin);
LOG("Informe o destino (ips):");
scanf("%hd",&dest_ips);
__fpurge(stdin);
LOG("Informe o tamanho da janela:");
scanf("%d",&tam_window);
__fpurge(stdin);
ret_connect = connect_point(sp, dest, dest_ips,tam_window);
LOG ("Retorno do conectar = %d\n", ret_connect);
break;
case 4: //responsavel por fechamento de conexão
LOG("Informe o ips:");
scanf("%hd",&sp);
__fpurge(stdin);
close_conn(sp);
LOG ("Ponto de servico %u desconectado com sucesso!\n", sp);
break;
case 5: //responsavel por funcao de enviar
LOG("Solicitacao para enviar!");
LOG("Informe o ips:");
scanf("%hd",&sp);
__fpurge(stdin);
LOG("Informe o tamanho (bytes) da mensagem que deseja enviar:");
scanf("%d",&tam_buffer);
__fpurge(stdin);
char *str = (char*) malloc(tam_buffer * sizeof(char));
LOG("Infome a msg que deseja enviar:");
scanf("%[^\n]",str);
__fpurge(stdin);
LOG ("MSG recebida: %s\n", str);
ret_send = send_point(sp, str, (tam_buffer * sizeof(char)));
LOG ("Tamanho da msg: %u",(tam_buffer * sizeof(char)));
LOG ("Quantidade de bytes enviados = %d\n", ret_send);
tam_buffer =0;
free(str);
break;
case 6: //responsavel por funcao de receber
LOG("Solicitacao para receber!");
LOG("Informe o ips:");
scanf("%hd",&sp);
__fpurge(stdin);
LOG("Informe o tamanho (bytes) da mensagem que deseja receber:");
scanf("%d",&tam_buffer);
__fpurge(stdin);
char *str2 = (char*) malloc(tam_buffer * sizeof(char));
ret_recived = recv_point(sp, str2, (tam_buffer * sizeof(char)));
LOG ("Quantidade de bytes recebidos = %d", ret_recived);
LOG ("MSG recebida: %s\n", str2);
tam_buffer =0;
free(str2);
break;
case 7: //responsavel por fazer o download de um arquivo
LOG("Informe o ips:");
scanf("%hd",&sp);
__fpurge(stdin);
LOG("Infome o nome do arquivo que deseja baixar:");
scanf("%[^\n]",file_name);
__fpurge(stdin);
download(sp, file_name);
break;
case 8: //responsavel por fazer o upload de um arquivo
LOG("Informe o ips:");
scanf("%hd",&sp);
__fpurge(stdin);
upload(sp);
break;
case 9:
/* Exibe a tabela de rotas*/
dislpay_routes();
break;
case 10: //configura o adulterador
//conf_adulterador(Perda, Corrupção, Duplicação), ca(...)
LOG("Configuracao do adulterador:");
printf("Informe a porcentagem de perda:");
scanf("%d",&l);
__fpurge(stdin);
printf("Informe a porcentagem de corrupcao:");
scanf("%d",&c);
__fpurge(stdin);
printf("Informe a porcentagem de duplicacao:");
scanf("%d",&d);
__fpurge(stdin);
config_garbler(l, c, d);
break;
case 11: //desabilita um enlace
//desabilitar_enlace(NóRem), de(...)
printf("Informe o no remoto para desabilitar:");
scanf("%hu", &remote_host);
__fpurge(stdin);
disable_route(remote_host);
config_link(num_host, remote_host, -1);
break;
case 12: //habilita um enlace
//habilitar_enlace(NóRem), he(...)
printf("Informe o no remoto para habilitar:");
scanf("%hu", &remote_host);
__fpurge(stdin);
printf("Informe mtu para habilitar:");
scanf("%d",&mtu);
__fpurge(stdin);
enable_route(remote_host);
config_link(num_host, remote_host, mtu);
break;
case 13: //depurar
//depurar, dp
depurar();
break;
case 14: //Fecha a camada de Aplicação
LOG("Camada de APLICACAO terminou com sucesso.\n");
break;
default:
LOG("Opcao invalida! Escolha Novamente.\n");
break;
}
}
return OK;
}
