add tests for user defined transparency frame diff and merge

dloebl · Aug 13, 2024 · f931c91 · f931c91
1 parent 0d08c2e
commit f931c91
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diff --git a/tests/meson.build b/tests/meson.build
@@ -43,6 +43,8 @@ tests = [
   { 'name' : 'stripe_pattern_interlaced',          'seed_should_fail' : false},
   { 'name' : 'switchpattern',                      'seed_should_fail' : false},
   { 'name' : 'trans_inc_initdict',                 'seed_should_fail' : false},
+  { 'name' : 'user_trans_diff_area',               'seed_should_fail' : false},
+  { 'name' : 'user_trans_merge',                   'seed_should_fail' : false},
   { 'name' : 'user_trans',                         'seed_should_fail' : false},
   { 'name' : 'write_fn',                           'seed_should_fail' : false},
 ]

diff --git a/tests/tests.sha256 b/tests/tests.sha256
@@ -34,5 +34,7 @@ ff1da19b0448af07d8561f0ee62b184f99ac7dcb75f1a2215474190ec6648901  noise6.gif
 161a132972bfbc060ea0359d8c40513d2e22e65b27a7c11553f883fe3856fe30  stripe_pattern_interlaced.gif
 b8a7e72024a1263229e85f27168800400489cf993f7b90f45f00d39323763261  switchpattern.gif
 1eb29910b6633bc1c6be49fc85ba7f5c24f415083d81f35c366ea50d55bcdf8d  trans_inc_initdict.gif
+0e02f2440b2db58268f6ef7906e41b088177e9fcdb2cb37e9540f4bfc9a7fa17  user_trans_diff_area.gif
 55b64d9c9a359f9daeecdf55c83e485aca3f90d2a6dd29f86d5b14a0e1396770  user_trans.gif
+86a08337540a8332dea3cb092394c3aac04fbbe98d9d884eb169a6c85d20f9a6  user_trans_merge.gif
 5d301094a0b54287cabcc71c6972f7be417a5bea87cde01d85089a8893fd17fd  write_fn.gif
diff --git a/tests/user_trans_diff_area.c b/tests/user_trans_diff_area.c
@@ -0,0 +1,62 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "cgif.h"
+
+#define WIDTH  2
+#define HEIGHT 2
+
+int main(void) {
+  CGIF*          pGIF;
+  CGIF_Config     gConfig;
+  CGIF_FrameConfig   fConfig;
+  uint8_t*      pImageData;
+  uint8_t       aPalette[] = {
+    0x00, 0xFF, 0x00, // green
+    0xFF, 0xFF, 0xFF, // white
+  };
+  cgif_result r;
+
+  memset(&gConfig, 0, sizeof(CGIF_Config));
+  memset(&fConfig, 0, sizeof(CGIF_FrameConfig));
+  gConfig.attrFlags               = CGIF_ATTR_IS_ANIMATED;
+  gConfig.genFlags                = CGIF_GEN_KEEP_IDENT_FRAMES;
+  gConfig.width                   = WIDTH;
+  gConfig.height                  = HEIGHT;
+  gConfig.pGlobalPalette          = aPalette;
+  gConfig.numGlobalPaletteEntries = 2;
+  gConfig.path                    = "user_trans_diff_area.gif";
+  //
+  // create new GIF
+  pGIF = cgif_newgif(&gConfig);
+  if(pGIF == NULL) {
+    fputs("failed to create new GIF via cgif_newgif()\n", stderr);
+    return 1;
+  }
+  //
+  // add frames to GIF
+  pImageData = malloc(WIDTH * HEIGHT);
+  memset(pImageData, 0, WIDTH * HEIGHT);
+  fConfig.pImageData = pImageData;
+  fConfig.delay      = 500;
+  cgif_addframe(pGIF, &fConfig);
+  fConfig.attrFlags  = CGIF_FRAME_ATTR_HAS_SET_TRANS;
+  fConfig.genFlags   = CGIF_FRAME_GEN_USE_DIFF_WINDOW;
+  fConfig.transIndex = 1;
+  // set everything to transparent (frame from before shines through)
+  memset(pImageData, 1, WIDTH * HEIGHT);
+  r = cgif_addframe(pGIF, &fConfig);
+  free(pImageData);
+  //
+  // write GIF to file
+  r = cgif_close(pGIF);
+
+  // check for errors
+  if(r != CGIF_OK) {
+    fprintf(stderr, "failed to create GIF. error code: %d\n", r);
+    return 2;
+  }
+  return 0;
+}
diff --git a/tests/user_trans_merge.c b/tests/user_trans_merge.c
@@ -0,0 +1,61 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "cgif.h"
+
+#define WIDTH  2
+#define HEIGHT 2
+
+int main(void) {
+  CGIF*          pGIF;
+  CGIF_Config     gConfig;
+  CGIF_FrameConfig   fConfig;
+  uint8_t*      pImageData;
+  uint8_t       aPalette[] = {
+    0x00, 0xFF, 0x00, // green
+    0xFF, 0xFF, 0xFF, // white
+  };
+  cgif_result r;
+
+  memset(&gConfig, 0, sizeof(CGIF_Config));
+  memset(&fConfig, 0, sizeof(CGIF_FrameConfig));
+  gConfig.attrFlags               = CGIF_ATTR_IS_ANIMATED;
+  gConfig.width                   = WIDTH;
+  gConfig.height                  = HEIGHT;
+  gConfig.pGlobalPalette          = aPalette;
+  gConfig.numGlobalPaletteEntries = 2;
+  gConfig.path                    = "user_trans_merge.gif";
+  //
+  // create new GIF
+  pGIF = cgif_newgif(&gConfig);
+  if(pGIF == NULL) {
+    fputs("failed to create new GIF via cgif_newgif()\n", stderr);
+    return 1;
+  }
+  //
+  // add frames to GIF
+  pImageData = malloc(WIDTH * HEIGHT);
+  memset(pImageData, 0, WIDTH * HEIGHT);
+  fConfig.pImageData = pImageData;
+  fConfig.delay      = 500;
+  cgif_addframe(pGIF, &fConfig);
+  fConfig.attrFlags  = CGIF_FRAME_ATTR_HAS_SET_TRANS;
+  fConfig.genFlags   = CGIF_FRAME_GEN_USE_DIFF_WINDOW;
+  fConfig.transIndex = 1;
+  // set everything to transparent (frame from before shines through)
+  memset(pImageData, 1, WIDTH * HEIGHT);
+  r = cgif_addframe(pGIF, &fConfig);
+  free(pImageData);
+  //
+  // write GIF to file
+  r = cgif_close(pGIF);
+
+  // check for errors
+  if(r != CGIF_OK) {
+    fprintf(stderr, "failed to create GIF. error code: %d\n", r);
+    return 2;
+  }
+  return 0;
+}