static int ndi_read_close(AVFormatContext *avctx)
{
struct NDIContext *ctx = (struct NDIContext *)avctx->priv_data;
if (ctx->recv)
NDIlib_recv_destroy(ctx->recv);
if (ctx->ndi_find)
NDIlib_find_destroy(ctx->ndi_find);
return 0;
}
int _tmain(int argc, _TCHAR* argv[])
{ // Not required, but "correct" (see the SDK documentation.
if (!NDIlib_initialize())
{ // Cannot run NDI. Most likely because the CPU is not sufficient (see SDK documentation).
// you can check this directly with a call to NDIlib_is_supported_CPU()
printf("Cannot run NDI.");
return 0;
}
// We are going to create an NDI finder that locates sources on the network.
// including ones that are available on this machine itself. It will use the default
// groups assigned for the current machine.
const NDIlib_find_create_t NDI_find_create_desc = { TRUE, NULL };
// We create the NDI finder
NDIlib_find_instance_t pNDI_find = NDIlib_find_create(&NDI_find_create_desc);
if (!pNDI_find) return FALSE;
// Run for one minute
for (DWORD start = ::GetTickCount(); ::GetTickCount() - start < 60000;)
{ // Wait up till 10 seconds to check for new sources having been added or removed from the network.
// Because we have specified a non zero timeout here, this will return NULL if there have been no changes.
DWORD no_sources = 0;
const NDIlib_source_t* p_sources = NDIlib_find_get_sources(pNDI_find, &no_sources, 10000);
// If it returned NULL then where where no changes on the network. If we have specified a timeout of 0,
// then it always returns all sources on the network.
if (!p_sources) continue;
// Display all the sources.
printf("Network sources (%u found).\n", no_sources);
for (DWORD i = 0; i < no_sources; i++)
printf("%d. %s\n", i + 1, p_sources[i].p_ndi_name);
}
// Destroy the NDI finder
NDIlib_find_destroy(pNDI_find);
// Success. We are done
return 0;
}
