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//
// Copyright 2012 Josh Blum
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with io_sig program. If not, see <http://www.gnu.org/licenses/>.
#include "element_impl.hpp"
#include <gras_impl/vector_utils.hpp>
#include <boost/make_shared.hpp>
#include <boost/bind.hpp>
using namespace gnuradio;
void ElementImpl::handle_block_msg(
const tsbe::TaskInterface &task_iface,
const tsbe::Wax &msg
){
if (MESSAGE) std::cerr << "handle_block_msg (" << msg.type().name() << ") " << name << std::endl;
//a buffer has returned from the downstream
//(all interested consumers have finished with it)
if (msg.type() == typeid(BufferReturnMessage))
{
const BufferReturnMessage &message = msg.cast<BufferReturnMessage>();
const size_t index = message.index;
if (this->block_state == BLOCK_STATE_DONE) return;
this->output_queues.push(index, message.buffer);
this->handle_task(task_iface);
return;
}
//self kick, call the handle task method
if (msg.type() == typeid(SelfKickMessage))
{
this->handle_task(task_iface);
return;
}
//clearly, this block is near death, hang on sparky
if (msg.type() == typeid(CheckTokensMessage))
{
if (this->input_queues.all_ready() and not this->forecast_fail)
{
this->handle_task(task_iface);
}
else
{
this->mark_done(task_iface);
}
return;
}
//store the topology's thread group
//erase any potentially old lingering threads
//spawn a new thread if this block is a source
if (msg.type() == typeid(SharedThreadGroup))
{
this->thread_group = msg.cast<SharedThreadGroup>();
this->interruptible_thread.reset(); //erase old one
if (task_iface.get_num_inputs() == 0) //its a source
{
this->interruptible_thread = boost::make_shared<InterruptibleThread>(
this->thread_group, boost::bind(&ElementImpl::task_work, this)
);
}
return;
}
//user changed some input settings like history or reserve reqs
if (msg.type() == typeid(UpdateInputsMessage))
{
this->input_update(task_iface);
return;
}
ASSERT(msg.type() == typeid(TopBlockMessage));
//FIXME leave the marked done blocks done...
//this helps QA tests to pass that re-use top block without diconnecting the old design
if (this->block_state == BLOCK_STATE_DONE) return;
const size_t num_inputs = task_iface.get_num_inputs();
const size_t num_outputs = task_iface.get_num_outputs();
//allocate output tokens and send them downstream
if (msg.cast<TopBlockMessage>().what == TopBlockMessage::TOKEN_TIME)
{
for (size_t i = 0; i < num_inputs; i++)
{
this->input_tokens[i] = Token::make();
task_iface.post_upstream(i, this->input_tokens[i]);
//TODO, schedule this message as a pre-allocation message
//tell the upstream about the input requirements
BufferHintMessage message;
message.history_bytes = this->input_history_items[i]*this->input_items_sizes[i];
message.reserve_bytes = this->input_multiple_items[i];
message.token = this->input_tokens[i];
task_iface.post_upstream(i, message);
}
for (size_t i = 0; i < num_outputs; i++)
{
this->output_tokens[i] = Token::make();
task_iface.post_downstream(i, this->output_tokens[i]);
}
this->token_pool.insert(msg.cast<TopBlockMessage>().token);
}
if (msg.cast<TopBlockMessage>().what == TopBlockMessage::ALLOCATE)
{
//causes initial processing kick-off for source blocks
this->handle_allocation(task_iface);
}
if (msg.cast<TopBlockMessage>().what == TopBlockMessage::ACTIVE)
{
if (this->block_state != BLOCK_STATE_LIVE)
{
this->block_ptr->start();
}
this->block_state = BLOCK_STATE_LIVE;
if (this->input_queues.all_ready() and this->output_queues.all_ready())
{
this->block.post_msg(SelfKickMessage());
}
}
if (msg.cast<TopBlockMessage>().what == TopBlockMessage::INERT)
{
if (this->block_state != BLOCK_STATE_DONE)
{
this->block_ptr->stop();
}
this->mark_done(task_iface);
}
}
void ElementImpl::topology_update(const tsbe::TaskInterface &task_iface)
{
//std::cout << "topology_update in " << name << std::endl;
const size_t num_inputs = task_iface.get_num_inputs();
const size_t num_outputs = task_iface.get_num_outputs();
//call check_topology on block before committing settings
this->block_ptr->check_topology(num_inputs, num_outputs);
//fill the item sizes from the IO signatures
fill_item_sizes_from_sig(this->input_items_sizes, this->input_signature, num_inputs);
fill_item_sizes_from_sig(this->output_items_sizes, this->output_signature, num_outputs);
//resize and fill port properties
resize_fill_back(this->input_history_items, num_inputs);
resize_fill_back(this->output_multiple_items, num_outputs);
resize_fill_grow(this->input_inline_enables, num_inputs, false);
//resize the bytes consumed/produced
resize_fill_grow(this->items_consumed, num_inputs, 0);
resize_fill_grow(this->items_produced, num_outputs, 0);
//resize all work buffers to match current connections
this->work_input_items.resize(num_inputs);
this->work_output_items.resize(num_outputs);
this->work_ninput_items.resize(num_inputs);
this->fcast_ninput_items.resize(num_inputs);
this->input_items.resize(num_inputs);
this->output_items.resize(num_outputs);
this->consume_items.resize(num_inputs, 0);
this->consume_called.resize(num_inputs, false);
this->produce_items.resize(num_outputs, 0);
this->input_queues.resize(num_inputs);
this->output_queues.resize(num_outputs);
this->forecast_enable = num_outputs != 0 and num_inputs != 0;
this->input_tokens.resize(num_inputs);
this->output_tokens.resize(num_outputs);
this->output_allocation_hints.resize(num_outputs);
//resize tags vector to match sizes
this->input_tags_changed.resize(num_inputs);
this->input_tags.resize(num_inputs);
//a block looses all connections, allow it to free
if (num_inputs == 0 and num_outputs == 0)
{
this->mark_done(task_iface);
}
this->topology_init = true;
this->input_update(task_iface);
}
void ElementImpl::input_update(const tsbe::TaskInterface &task_iface)
{
const size_t num_inputs = task_iface.get_num_inputs();
const size_t num_outputs = task_iface.get_num_outputs();
//impose input reserve requirements based on relative rate and output multiple
resize_fill_grow(this->input_multiple_items, num_inputs, 1);
for (size_t i = 0; i < num_inputs; i++)
{
//TODO, this is a little cheap, we only look at output multiple [0]
const size_t multiple = (num_outputs)?this->output_multiple_items.front():1;
if (this->enable_fixed_rate)
{
this->input_multiple_items[i] = size_t(std::ceil(multiple/this->relative_rate));
}
if (this->input_multiple_items[i] == 0) this->input_multiple_items[i] = 1;
}
//init the history comprehension on input queues
this->input_queues.init(this->input_history_items, this->input_multiple_items, this->input_items_sizes);
}
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