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#include "bit_container.h"
#include "common/utils.h"
#include "imgui/imgui_image.h"
#include "logger.h"
#include "core/exception.h"
#include <filesystem>
#include <fcntl.h>
#include <random>
#ifdef _WIN32
#define __USE_FILE_OFFSET64
#include "mmap_windows.h"
#else
#include <sys/mman.h>
#include <unistd.h>
#endif
namespace satdump
{
BitContainer::BitContainer(std::string name, std::string file_path)
: d_name(name), d_filepath(file_path)
{
// Generate unique ID
std::random_device dev;
std::mt19937 rng(dev());
std::uniform_int_distribution<std::mt19937::result_type> check(65, 90);
for (size_t i = 0; i < 15; i++)
unique_id[i] = check(rng);
// Buffer for creating textures
wip_texture_buffer = new uint32_t[d_chunk_size * d_chunk_size];
// Init mmap pointers
d_file_memory_size = getFilesize(file_path);
if(d_file_memory_size == 0)
throw satdump_exception("Empty File!");
fd = open(file_path.c_str(), O_RDONLY);
d_file_memory_ptr = (uint8_t *)mmap(0, d_file_memory_size, PROT_READ, MAP_SHARED, fd, 0);
if (d_file_memory_ptr == MAP_FAILED)
{
close(fd);
throw satdump_exception("mmap failed!");
}
// Default period
init_bitperiod();
// Initial start
update = true;
}
BitContainer::~BitContainer()
{
delete[] wip_texture_buffer;
munmap(d_file_memory_ptr, d_file_memory_size);
close(fd);
if (d_is_temporary && std::filesystem::exists(d_filepath))
{
try
{
std::filesystem::remove(d_filepath);
}
catch (std::exception &e)
{
logger->warn("Failed to delete temporary file: %s", e.what());
}
}
}
void BitContainer::init_bitperiod()
{
size_t final_size = 0;
img_parts_y = 0;
while (final_size < d_file_memory_size * 8)
{
final_size += d_bitperiod * d_chunk_size;
img_parts_y++;
}
final_size = 0;
img_parts_x = 0;
while (final_size < d_bitperiod)
{
final_size += d_chunk_size;
img_parts_x++;
}
image_parts.resize(img_parts_y * img_parts_x);
printf("%d %d\n", int(img_parts_x * d_chunk_size), int(img_parts_y * d_chunk_size));
}
void BitContainer::doUpdateTextures()
{
if (force_update_all)
{
for (size_t ii = 0; ii < img_parts_y; ii++)
{
for (size_t iii = 0; iii < img_parts_x; iii++)
{
auto &part = image_parts[ii * img_parts_x + iii];
if (part.image_id != 0)
deleteImageTexture(part.image_id);
}
}
force_update_all = false;
update = true;
}
if (update)
{
size_t offset = 0;
for (size_t ii = 0; ii < img_parts_y; ii++)
{
for (size_t iii = 0; iii < img_parts_x; iii++)
{
auto &part = image_parts[ii * img_parts_x + iii];
size_t xoffset = iii * d_chunk_size;
if (part.visible)
{
if (part.image_id == 0)
part.image_id = makeImageTexture();
if (d_display_mode == 0) // Bit display
{
#pragma omp parallel for
for (int64_t line = 0; (size_t)line < d_chunk_size; line++)
{
for (size_t i = 0; i < d_chunk_size; i++)
{
size_t bitstream_pos = offset + line * d_bitperiod + xoffset + i;
size_t raster_pos = line * d_chunk_size + i;
if (bitstream_pos < d_file_memory_size * 8)
{
if (xoffset + i < d_bitperiod)
{
uint8_t v = ((d_file_memory_ptr[bitstream_pos / 8] >> (7 - (bitstream_pos % 8))) & 1) ? 0 : 255;
wip_texture_buffer[raster_pos] = 255 << 24 | v << 16 | v << 8 | v;
}
else
{
wip_texture_buffer[raster_pos] = 0 << 24;
}
}
else
{
wip_texture_buffer[raster_pos] = 0 << 24;
}
}
}
printf("CREATE TEXT %d\n", int(ii * img_parts_x + iii));
updateImageTexture(part.image_id, wip_texture_buffer, d_chunk_size, d_chunk_size);
}
else if (d_display_mode == 1) // Byte display
{
#pragma omp parallel for
for (int64_t line = 0; (size_t)line < d_chunk_size; line++)
{
for (size_t i = 0; i < d_chunk_size / 8; i++)
{
size_t bitstream_pos = offset + line * d_bitperiod + xoffset + i * 8;
size_t raster_pos = line * (d_chunk_size / 8) + i;
if (bitstream_pos < d_file_memory_size * 8)
{
if (xoffset + i * 8 < d_bitperiod)
{
uint8_t v = d_file_memory_ptr[bitstream_pos / 8];
wip_texture_buffer[raster_pos] = 255 << 24 | 0 << 16 | v << 8 | 0;
}
else
{
wip_texture_buffer[raster_pos] = 0 << 24;
}
}
else
{
wip_texture_buffer[raster_pos] = 0 << 24;
}
}
}
printf("CREATE TEXT %d\n", int(ii * img_parts_x + iii));
updateImageTexture(part.image_id, wip_texture_buffer, d_chunk_size / 8, d_chunk_size);
}
}
else
{
if (part.image_id != 0)
deleteImageTexture(part.image_id);
part.image_id = 0;
}
part.pos1_x = d_chunk_size * (iii + 0);
part.pos1_y = d_chunk_size * (ii + 1);
part.pos2_x = d_chunk_size * (iii + 1);
part.pos2_y = d_chunk_size * (ii + 0);
part.i = ii * img_parts_x + iii;
}
offset += d_bitperiod * d_chunk_size;
}
update = false;
}
}
void BitContainer::doDrawPlotTextures(ImPlotRect c)
{
for (auto &part : image_parts)
{
// if (c.Min().x > part.pos1_x || c.Max().y < part.pos1_y)
// continue;
// if (c.Max().x < part.pos2_x || c.Min().y > part.pos2_y)
// continue;
if (part.i == -1)
continue;
bool status_before = part.visible;
part.visible = false;
if (c.Min().x > part.pos2_x || c.Max().y < part.pos2_y)
{
}
else if (c.Max().x < part.pos1_x || c.Min().y > part.pos1_y)
{
}
else
{
// printf("%f %f - %f %f ---- %f %f - %f %f ---- %d\n",
// c.Min().x, c.Min().y, c.Max().x, c.Max().y,
// part.pos1_x, part.pos1_y, part.pos2_x, part.pos2_y,
// part.i);
ImPlot::PlotImage("Test", (void *)(intptr_t)part.image_id, {part.pos1_x, part.pos1_y}, {part.pos2_x, part.pos2_y});
part.visible = true;
}
if (part.visible != status_before)
update = true;
}
}
}
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