ASTC experiment

submodules/TelegramUI/third-party/astc/compress/astc.cc

@@ -0,0 +1,74 @@
+#include <sys/time.h>
+
+#include "astc.h"
+
+#include <cmath>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
+#include "compress_texture.h"
+#include "constants.h"
+#include "bgra.h"
+#include "compressed.h"
+
+int64_t usecs_passed(const timeval& t1, const timeval& t2) {
+  return (t2.tv_sec - t1.tv_sec) * 1000000 + (t2.tv_usec - t1.tv_usec);
+}
+
+void compress_astc(const BgraImage& image, CompressedImage* compressed) {
+  compress_texture(reinterpret_cast<uint8_t*>(image.buffer), compressed->buffer, static_cast<int>(image.width), static_cast<int>(image.height));
+}
+
+/*int main(int argc, const char** argv) {
+  if (argc < 3 || argc > 4) {
+    fprintf(stderr, "Usage: %s [-q | --quiet] INPUT OUTPUT\n", argv[0]);
+    return 1;
+  }
+
+  bool quiet = false;
+  const char* input = nullptr;
+  const char* output = nullptr;
+
+  int i = 1;
+  if (strcmp(argv[i], "-q") == 0 || strcmp(argv[i], "--quiet") == 0) {
+    quiet = true;
+    ++i;
+  }
+  input = argv[i];
+  output = argv[i + 1];
+
+  try {
+    BgraImage image = ReadTGAFile(input);
+
+    if (image.width % BLOCK_WIDTH != 0 || image.height % BLOCK_HEIGHT != 0) {
+      fprintf(stderr,
+              "Error: image size (%ldx%ld) not a multiple of block size "
+              "(%ldx%ld)\n",
+              image.width, image.height, BLOCK_WIDTH, BLOCK_HEIGHT);
+      return 1;
+    }
+
+    CompressedImage compressed(image.width, image.height, BLOCK_WIDTH,
+                               BLOCK_HEIGHT, BLOCK_BYTES);
+
+    if (quiet) {
+      compress_astc(image, &compressed);
+    } else {
+      timeval t1;
+      gettimeofday(&t1, NULL);
+      compress_astc(image, &compressed);
+      timeval t2;
+      gettimeofday(&t2, NULL);
+      fprintf(stdout, "Time passed: %ldus\n", usecs_passed(t1, t2));
+    }
+
+    WriteASTCFile(compressed, output);
+  } catch (const char* err) {
+    fprintf(stderr, "Error: %s\n", err);
+    return 1;
+  }
+
+  return 0;
+}*/