From: Soeren Apel Date: Wed, 27 Dec 2017 09:31:30 +0000 (+0100) Subject: DecodeSignal: Restructure metadata handling X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=commitdiff_plain;h=65efd0258bc6a70806f7c832a32ac74ce489fa52;hp=63253d727162257aa0a3765bfb897c6826ebf611 DecodeSignal: Restructure metadata handling Instead of handling the metadata separately from the mux/decode segments, it's much neater to handle both together. Doing this also allows us to remove the need for query_input_metadata() since we're taking the metadata from the muxed logic segments. --- diff --git a/pv/data/decodesignal.cpp b/pv/data/decodesignal.cpp index c0dbb20d..1eff9119 100644 --- a/pv/data/decodesignal.cpp +++ b/pv/data/decodesignal.cpp @@ -236,8 +236,6 @@ void DecodeSignal::begin_decode() return; } - create_segments(); - // Make sure the logic output data is complete and up-to-date logic_mux_interrupt_ = false; logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this); @@ -807,8 +805,10 @@ void DecodeSignal::logic_mux_proc() assert(logic_mux_data_); - shared_ptr output_segment = logic_mux_data_->logic_segments().front(); - assert(output_segment); + // Create initial logic mux segment + shared_ptr output_segment = + make_shared(*logic_mux_data_, logic_mux_unit_size_, 0); + logic_mux_data_->push_segment(output_segment); output_segment->set_samplerate(get_input_samplerate(0)); @@ -846,14 +846,9 @@ void DecodeSignal::logic_mux_proc() // Process next segment segment_id++; - try { - output_segment = logic_mux_data_->logic_segments().at(segment_id); - } catch (out_of_range) { - qDebug() << "Muxer error for" << name() << ": no logic mux segment" \ - << segment_id << "in logic_mux_proc(), mux segments size is" \ - << logic_mux_data_->logic_segments().size(); - return; - } + output_segment = + make_shared(*logic_mux_data_, logic_mux_unit_size_, 0); + logic_mux_data_->push_segment(output_segment); output_segment->set_samplerate(get_input_samplerate(segment_id)); @@ -869,55 +864,6 @@ void DecodeSignal::logic_mux_proc() } while (!logic_mux_interrupt_); } -void DecodeSignal::query_input_metadata() -{ - // Update the samplerate and start time because we cannot start - // the libsrd session without the current samplerate - - // TODO Currently we assume all channels have the same sample rate - // and start time - bool samplerate_valid = false; - data::DecodeChannel *any_channel; - shared_ptr logic_data; - - do { - any_channel = &(*find_if(channels_.begin(), channels_.end(), - [](data::DecodeChannel ch) { return ch.assigned_signal; })); - - logic_data = any_channel->assigned_signal->logic_data(); - - if (!logic_data) { - // Wait until input data is available or an interrupt was requested - unique_lock input_wait_lock(input_mutex_); - decode_input_cond_.wait(input_wait_lock); - } - } while (!logic_data && !decode_interrupt_); - - if (decode_interrupt_) - return; - - do { - if (!logic_data->logic_segments().empty()) { - shared_ptr first_segment = - any_channel->assigned_signal->logic_data()->logic_segments().front(); - - // We only need valid metadata in the first decode segment - // so that start_srd_session() can use it - segments_.at(current_segment_id_).start_time = first_segment->start_time(); - segments_.at(current_segment_id_).samplerate = first_segment->samplerate(); - - if (segments_.at(current_segment_id_).samplerate > 0) - samplerate_valid = true; - } - - if (!samplerate_valid) { - // Wait until input data is available or an interrupt was requested - unique_lock input_wait_lock(input_mutex_); - decode_input_cond_.wait(input_wait_lock); - } - } while (!samplerate_valid && !decode_interrupt_); -} - void DecodeSignal::decode_data( const int64_t abs_start_samplenum, const int64_t sample_count, const shared_ptr input_segment) @@ -958,20 +904,28 @@ void DecodeSignal::decode_data( void DecodeSignal::decode_proc() { - query_input_metadata(); + current_segment_id_ = 0; + + // If there is no input data available yet, wait until it is or we're interrupted + if (logic_mux_data_->logic_segments().size() == 0) { + unique_lock input_wait_lock(input_mutex_); + decode_input_cond_.wait(input_wait_lock); + } if (decode_interrupt_) return; - start_srd_session(); - - current_segment_id_ = 0; shared_ptr input_segment = logic_mux_data_->logic_segments().front(); - assert(input_segment); + + // Create the initial segment and set its sample rate so that we can pass it to SRD + create_decode_segment(); segments_.at(current_segment_id_).samplerate = input_segment->samplerate(); + segments_.at(current_segment_id_).start_time = input_segment->start_time(); - uint64_t sample_count; + start_srd_session(); + + uint64_t sample_count = 0; uint64_t abs_start_samplenum = 0; do { // Keep processing new samples until we exhaust the input data @@ -1000,7 +954,10 @@ void DecodeSignal::decode_proc() } abs_start_samplenum = 0; + // Create the next segment and set its metadata + create_decode_segment(); segments_.at(current_segment_id_).samplerate = input_segment->samplerate(); + segments_.at(current_segment_id_).start_time = input_segment->start_time(); // Reset decoder state stop_srd_session(); @@ -1081,44 +1038,33 @@ void DecodeSignal::connect_input_notifiers() } } -void DecodeSignal::create_segments() +void DecodeSignal::create_decode_segment() { - // Make sure we have as many segments as we need - const uint32_t input_segment_count = get_input_segment_count(); - - for (uint32_t i = logic_mux_data_->logic_segments().size(); i < input_segment_count; i++) { - shared_ptr segment = - make_shared(*logic_mux_data_, logic_mux_unit_size_, 0); - logic_mux_data_->push_segment(segment); - } - - for (uint32_t i = segments_.size(); i < input_segment_count; i++) { - // Create annotation segment - segments_.emplace_back(DecodeSegment()); + // Create annotation segment + segments_.emplace_back(DecodeSegment()); - // Add annotation classes - for (const shared_ptr &dec : stack_) { - assert(dec); - const srd_decoder *const decc = dec->decoder(); - assert(dec->decoder()); + // Add annotation classes + for (const shared_ptr &dec : stack_) { + assert(dec); + const srd_decoder *const decc = dec->decoder(); + assert(dec->decoder()); - // Add a row for the decoder if it doesn't have a row list - if (!decc->annotation_rows) - (segments_.back().annotation_rows)[Row(decc)] = - decode::RowData(); + // Add a row for the decoder if it doesn't have a row list + if (!decc->annotation_rows) + (segments_.back().annotation_rows)[Row(decc)] = + decode::RowData(); - // Add the decoder rows - for (const GSList *l = decc->annotation_rows; l; l = l->next) { - const srd_decoder_annotation_row *const ann_row = - (srd_decoder_annotation_row *)l->data; - assert(ann_row); + // Add the decoder rows + for (const GSList *l = decc->annotation_rows; l; l = l->next) { + const srd_decoder_annotation_row *const ann_row = + (srd_decoder_annotation_row *)l->data; + assert(ann_row); - const Row row(decc, ann_row); + const Row row(decc, ann_row); - // Add a new empty row data object - (segments_.back().annotation_rows)[row] = - decode::RowData(); - } + // Add a new empty row data object + (segments_.back().annotation_rows)[row] = + decode::RowData(); } } } @@ -1182,8 +1128,6 @@ void DecodeSignal::on_data_cleared() void DecodeSignal::on_data_received() { - create_segments(); - if (!logic_mux_thread_.joinable()) begin_decode(); else diff --git a/pv/data/decodesignal.hpp b/pv/data/decodesignal.hpp index 04497ec5..b4f9a2cb 100644 --- a/pv/data/decodesignal.hpp +++ b/pv/data/decodesignal.hpp @@ -149,8 +149,6 @@ private: void logic_mux_proc(); - void query_input_metadata(); - void decode_data(const int64_t abs_start_samplenum, const int64_t sample_count, const shared_ptr input_segment); @@ -161,7 +159,7 @@ private: void connect_input_notifiers(); - void create_segments(); + void create_decode_segment(); static void annotation_callback(srd_proto_data *pdata, void *decode_signal);