Add a unit test for Motion JPEG frames.

ui/gfx/codec/jpeg_codec_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <math.h>
 
 #include "base/basictypes.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/codec/jpeg_codec.h"
 
@@ skipping 36 matching lines @@
     "\x28\x29\x2a\x35\x36\x37\x38\x39\x3a\x43\x44\x45\x46\x47\x48\x49"
     "\x4a\x53\x54\x55\x56\x57\x58\x59\x5a\x63\x64\x65\x66\x67\x68\x69"
     "\x6a\x73\x74\x75\x76\x77\x78\x79\x7a\x82\x83\x84\x85\x86\x87\x88"
     "\x89\x8a\x92\x93\x94\x95\x96\x97\x98\x99\x9a\xa2\xa3\xa4\xa5\xa6"
     "\xa7\xa8\xa9\xaa\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xc2\xc3\xc4"
     "\xc5\xc6\xc7\xc8\xc9\xca\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xe2"
     "\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9"
     "\xfa\xff\xda\x00\x0c\x03\x01\x00\x02\x11\x03\x11\x00\x3f\x00\xf9"
     "\xd2\x8a\x28\xaf\xc3\x0f\xf5\x4c\xff\xd9";
 
+// A typical Motion JPEG frame which do not have DHT markers.
+const uint8 kMotionJPEGFrame[] =
+    "\xff\xd8\xff\xe0\x00\x10\x4a\x46\x49\x46\x00\x01\x01\x01\x00\x60"
+    "\x00\x60\x00\x00\xff\xdb\x00\x43\x00\x02\x01\x01\x02\x01\x01\x02"
+    "\x02\x02\x02\x02\x02\x02\x02\x03\x05\x03\x03\x03\x03\x03\x06\x04"
+    "\x04\x03\x05\x07\x06\x07\x07\x07\x06\x07\x07\x08\x09\x0b\x09\x08"
+    "\x08\x0a\x08\x07\x07\x0a\x0d\x0a\x0a\x0b\x0c\x0c\x0c\x0c\x07\x09"
+    "\x0e\x0f\x0d\x0c\x0e\x0b\x0c\x0c\x0c\xff\xdb\x00\x43\x01\x02\x02"
+    "\x02\x03\x03\x03\x06\x03\x03\x06\x0c\x08\x07\x08\x0c\x0c\x0c\x0c"
+    "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
+    "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
+    "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\xff\xc0"
+    "\x00\x11\x08\x00\x40\x00\x40\x03\x01\x22\x00\x02\x11\x01\x03\x11"
+    "\x01\xff\xda\x00\x0c\x03\x01\x00\x02\x11\x03\x11\x00\x3f\x00\xf8"
+    "\xbe\x8a\x28\xaf\xe5\x33\xfd\xfc\x0a\x28\xa2\x80\x0a\x28\xa2\x80"
+    "\x0a\x28\xa2\x80\x0a\x28\xa2\x80\x0a\x28\xa2\x80\x0a\x28\xa2\x80"
+    "\x0a\x28\xa2\x80\x0a\x28\xa2\x80\x0a\x28\xa2\x80\x0a\x28\xa2\x80"
+    "\x0a\x28\xa2\x80\x0a\x28\xa2\x80\x0a\x28\xa2\x80\x0a\x28\xa2\x80"
+    "\x0a\x28\xa2\x80\x3f\xff\xd9";
+
 }  // namespace
 
 namespace gfx {
 
 // out of 100, this indicates how compressed it will be, this should be changed
 // with jpeg equality threshold
 // static int jpeg_quality = 75;  // FIXME(brettw)
 static int jpeg_quality = 100;
 
 // The threshold of average color differences where we consider two images
@@ skipping 140 matching lines @@
                     arraysize(kTopSitesMigrationTestImage),
                     JPEGCodec::FORMAT_RGB, &output,
                     &outw, &outh);
 
   JPEGCodec::Decode(kTopSitesMigrationTestImage,
                     arraysize(kTopSitesMigrationTestImage),
                     JPEGCodec::FORMAT_RGBA, &output,
                     &outw, &outh);
 }
 
+// Test that we can decode a motion JPEG frame.
+TEST(JPEGCodec, DecodeMotionJPEG) {
+  std::vector<unsigned char> output;
+  int outw, outh;
+  ASSERT_TRUE(JPEGCodec::Decode(kMotionJPEGFrame,
+                                arraysize(kMotionJPEGFrame),
+                                JPEGCodec::FORMAT_RGB, &output,
+                                &outw, &outh));
+  EXPECT_EQ(64, outw);
+  EXPECT_EQ(64, outh);
+
+  ASSERT_TRUE(JPEGCodec::Decode(kMotionJPEGFrame,
+                                arraysize(kMotionJPEGFrame),
+                                JPEGCodec::FORMAT_RGBA, &output,
+                                &outw, &outh));
+  EXPECT_EQ(64, outw);
+  EXPECT_EQ(64, outh);
+}
+
 }  // namespace gfx