* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
+#include "config.h" // For HAVE_UNALIGNED_LITTLE_ENDIAN_ACCESS
+
#include <extdef.h>
-#include <assert.h>
-#include <string.h>
-#include <stdlib.h>
+#include <cassert>
#include <cmath>
+#include <cstdlib>
+#include <cstring>
#include "logic.hpp"
#include "logicsegment.hpp"
using std::recursive_mutex;
using std::max;
using std::min;
-using std::pair;
using std::shared_ptr;
+using std::vector;
using sigrok::Logic;
const int LogicSegment::MipMapScalePower = 4;
const int LogicSegment::MipMapScaleFactor = 1 << MipMapScalePower;
const float LogicSegment::LogMipMapScaleFactor = logf(MipMapScaleFactor);
-const uint64_t LogicSegment::MipMapDataUnit = 64*1024; // bytes
+const uint64_t LogicSegment::MipMapDataUnit = 64 * 1024; // bytes
-LogicSegment::LogicSegment(pv::data::Logic& owner, shared_ptr<sigrok::Logic> data,
- uint64_t samplerate) :
- Segment(samplerate, data->unit_size()),
+LogicSegment::LogicSegment(pv::data::Logic& owner, uint32_t segment_id,
+ unsigned int unit_size, uint64_t samplerate) :
+ Segment(segment_id, samplerate, unit_size),
owner_(owner),
last_append_sample_(0)
{
- lock_guard<recursive_mutex> lock(mutex_);
memset(mip_map_, 0, sizeof(mip_map_));
- append_payload(data);
}
LogicSegment::~LogicSegment()
assert(unit_size_ == logic->unit_size());
assert((logic->data_length() % unit_size_) == 0);
+ append_payload(logic->data_pointer(), logic->data_length());
+}
+
+void LogicSegment::append_payload(void *data, uint64_t data_size)
+{
+ assert((data_size % unit_size_) == 0);
+
lock_guard<recursive_mutex> lock(mutex_);
uint64_t prev_sample_count = sample_count_;
- uint64_t sample_count = logic->data_length() / unit_size_;
+ uint64_t sample_count = data_size / unit_size_;
- append_samples(logic->data_pointer(), sample_count);
+ append_samples(data, sample_count);
// Generate the first mip-map from the data
append_payload_to_mipmap();
prev_sample_count + 1);
}
-const uint8_t* LogicSegment::get_samples(int64_t start_sample,
- int64_t end_sample) const
+void LogicSegment::get_samples(int64_t start_sample,
+ int64_t end_sample, uint8_t* dest) const
{
assert(start_sample >= 0);
assert(start_sample <= (int64_t)sample_count_);
assert(end_sample >= 0);
assert(end_sample <= (int64_t)sample_count_);
assert(start_sample <= end_sample);
+ assert(dest != nullptr);
lock_guard<recursive_mutex> lock(mutex_);
- return get_raw_samples(start_sample, (end_sample-start_sample));
+ get_raw_samples(start_sample, (end_sample - start_sample), dest);
}
SegmentLogicDataIterator* LogicSegment::begin_sample_iteration(uint64_t start)
// Compute higher level mipmaps
for (unsigned int level = 1; level < ScaleStepCount; level++) {
MipMapLevel &m = mip_map_[level];
- const MipMapLevel &ml = mip_map_[level-1];
+ const MipMapLevel &ml = mip_map_[level - 1];
// Expand the data buffer to fit the new samples
prev_length = m.length;
{
assert(index < sample_count_);
- const uint8_t* data = get_raw_samples(index, 1);
+ assert(unit_size_ <= 8); // 8 * 8 = 64 channels
+ uint8_t data[8];
+
+ get_raw_samples(index, 1, data);
uint64_t sample = unpack_sample(data);
- delete[] data;
return sample;
}
void LogicSegment::get_subsampled_edges(
- std::vector<EdgePair> &edges,
+ vector<EdgePair> &edges,
uint64_t start, uint64_t end,
float min_length, int sig_index)
{
bool last_sample;
bool fast_forward;
- assert(end <= get_sample_count());
assert(start <= end);
assert(min_length > 0);
assert(sig_index >= 0);
lock_guard<recursive_mutex> lock(mutex_);
+ // Make sure we only process as many samples as we have
+ if (end > get_sample_count())
+ end = get_sample_count();
+
const uint64_t block_length = (uint64_t)max(min_length, 1.0f);
const unsigned int min_level = max((int)floorf(logf(min_length) /
LogMipMapScaleFactor) - 1, 0);
// Store the initial state
last_sample = (get_unpacked_sample(start) & sig_mask) != 0;
- edges.push_back(pair<int64_t, bool>(index++, last_sample));
+ edges.emplace_back(index++, last_sample);
while (index + block_length <= end) {
//----- Continue to search -----//
level = min_level;
// We cannot fast-forward if there is no mip-map data at
- // at the minimum level.
+ // the minimum level.
fast_forward = (mip_map_[level].data != nullptr);
if (min_length < MipMapScaleFactor) {
// Search individual samples up to the beginning of
// the next first level mip map block
- const uint64_t final_index = min(end,
- pow2_ceil(index, MipMapScalePower));
+ const uint64_t final_index = min(end, pow2_ceil(index, MipMapScalePower));
for (; index < final_index &&
(index & ~((uint64_t)(~0) << MipMapScalePower)) != 0;
index++) {
- const bool sample =
- (get_unpacked_sample(index) & sig_mask) != 0;
+
+ const bool sample = (get_unpacked_sample(index) & sig_mask) != 0;
// If there was a change we cannot fast forward
if (sample != last_sample) {
// If resolution is less than a mip map block,
// round up to the beginning of the mip-map block
// for this level of detail
- const int min_level_scale_power =
- (level + 1) * MipMapScalePower;
+ const int min_level_scale_power = (level + 1) * MipMapScalePower;
index = pow2_ceil(index, min_level_scale_power);
if (index >= end)
break;
// We can fast forward only if there was no change
- const bool sample =
- (get_unpacked_sample(index) & sig_mask) != 0;
+ const bool sample = (get_unpacked_sample(index) & sig_mask) != 0;
if (last_sample != sample)
fast_forward = false;
}
// Slide right and zoom out at the beginnings of mip-map
// blocks until we encounter a change
- while (1) {
- const int level_scale_power =
- (level + 1) * MipMapScalePower;
- const uint64_t offset =
- index >> level_scale_power;
+ while (true) {
+ const int level_scale_power = (level + 1) * MipMapScalePower;
+ const uint64_t offset = index >> level_scale_power;
// Check if we reached the last block at this
// level, or if there was a change in this block
if (offset >= mip_map_[level].length ||
- (get_subsample(level, offset) &
- sig_mask))
+ (get_subsample(level, offset) & sig_mask))
break;
if ((offset & ~((uint64_t)(~0) << MipMapScalePower)) == 0) {
// If we are now at the beginning of a
// higher level mip-map block ascend one
// level
- if (level + 1 >= ScaleStepCount ||
- !mip_map_[level + 1].data)
+ if ((level + 1 >= ScaleStepCount) || (!mip_map_[level + 1].data))
break;
level++;
} else {
// Slide right to the beginning of the
// next mip map block
- index = pow2_ceil(index + 1,
- level_scale_power);
+ index = pow2_ceil(index + 1, level_scale_power);
}
}
// Zoom in, and slide right until we encounter a change,
// and repeat until we reach min_level
- while (1) {
+ while (true) {
assert(mip_map_[level].data);
- const int level_scale_power =
- (level + 1) * MipMapScalePower;
- const uint64_t offset =
- index >> level_scale_power;
+ const int level_scale_power = (level + 1) * MipMapScalePower;
+ const uint64_t offset = index >> level_scale_power;
// Check if we reached the last block at this
// level, or if there was a change in this block
if (offset >= mip_map_[level].length ||
- (get_subsample(level, offset) &
- sig_mask)) {
+ (get_subsample(level, offset) & sig_mask)) {
// Zoom in unless we reached the minimum
// zoom
if (level == min_level)
} else {
// Slide right to the beginning of the
// next mip map block
- index = pow2_ceil(index + 1,
- level_scale_power);
+ index = pow2_ceil(index + 1, level_scale_power);
}
}
// block
if (min_length < MipMapScaleFactor) {
for (; index < end; index++) {
- const bool sample = (get_unpacked_sample(index) &
- sig_mask) != 0;
+ const bool sample = (get_unpacked_sample(index) & sig_mask) != 0;
if (sample != last_sample)
break;
}
break;
// Store the final state
- const bool final_sample =
- (get_unpacked_sample(final_index - 1) & sig_mask) != 0;
- edges.push_back(pair<int64_t, bool>(index, final_sample));
+ const bool final_sample = (get_unpacked_sample(final_index - 1) & sig_mask) != 0;
+ edges.emplace_back(index, final_sample);
index = final_index;
last_sample = final_sample;
// Add the final state
const bool end_sample = get_unpacked_sample(end) & sig_mask;
if (last_sample != end_sample)
- edges.push_back(pair<int64_t, bool>(end, end_sample));
- edges.push_back(pair<int64_t, bool>(end + 1, end_sample));
+ edges.emplace_back(end, end_sample);
+ edges.emplace_back(end + 1, end_sample);
}
uint64_t LogicSegment::get_subsample(int level, uint64_t offset) const
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