Break out SSE functions into new media_sse target.

media/media.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Override to dynamically link the PulseAudio library.
     'use_pulseaudio%': 0,
     # Override to dynamically link the cras (ChromeOS audio) library.
@@ skipping 665 matching lines @@
                              '-t', '<(outfile_type)',
                              '-e', '<(extra_header)',
                              '-s', '<(stubs_filename_root)',
                              '-p', '<(project_path)',
                              '<@(_inputs)',
                   ],
                   'process_outputs_as_sources': 1,
                   'message': 'Generating Pulse stubs for dynamic loading.',
                 },
               ],
-              'conditions': [ 
+              'conditions': [
                 # Linux/Solaris need libdl for dlopen() and friends.
                 ['OS == "linux" or OS == "solaris"', {
                   'link_settings': {
                     'libraries': [
                       '-ldl',
                     ],
                   },
                 }],
               ],
             }, {  # else: use_pulseaudio == 0
@@ skipping 107 matching lines @@
         [ 'screen_capture_supported==1 and (target_arch=="ia32" or target_arch=="x64")', {
           'dependencies': [
             'differ_block_sse2',
           ],
         }],
         ['toolkit_uses_gtk==1', {
           'dependencies': [
             '../build/linux/system.gyp:gtk',
           ],
         }],
+        ['target_arch == "ia32" or target_arch == "x64"', {
+          'dependencies': [
+            'media_sse',
+          ],
+        }],
       ],
       'target_conditions': [
         ['OS == "ios"', {
           'sources/': [
             # Pull in specific Mac files for iOS (which have been filtered out
             # by file name rules).
             ['include', '^audio/mac/audio_input_mac\\.'],
           ],
         }],
       ],
@@ skipping 191 matching lines @@
         ['use_alsa==0', {
           'sources!': [
             'audio/linux/alsa_output_unittest.cc',
             'audio/audio_low_latency_input_output_unittest.cc',
           ],
         }],
         [ 'target_arch=="ia32" or target_arch=="x64"', {
           'sources': [
             'base/simd/convert_rgb_to_yuv_unittest.cc',
           ],
+          'dependencies': [
+            'media_sse',
+          ],
         }],
         [ 'screen_capture_supported == 0', {
           'sources/': [
             ['exclude', '^video/capture/screen/'],
           ],
         }],
         ['proprietary_codecs==1 or branding=="Chrome"', {
           'sources': [
             'mp4/aac_unittest.cc',
             'mp4/avc_unittest.cc',
@@ skipping 568 matching lines @@
           'include_dirs': [
             '..',
           ],
           'sources': [
             'video/capture/screen/differ_block_sse2.cc',
             'video/capture/screen/differ_block_sse2.h',
           ],
         }, # end of target differ_block_sse2
       ],
     }],
+    ['target_arch=="ia32" or target_arch=="x64"', {
+      'targets': [
+        {
+          'target_name': 'media_sse',
+          'type': 'static_library',
+          'conditions': [
+            # OSX already enables SSE2 or higher.

[Mark Mentovai, 2013/03/05 21:32:31]

…and OSX doesn’t use cflags either, so this would be pointless.

[DaleCurtis, 2013/03/05 21:51:37]

Yes! I was irritated that this expression was necessary as it's linking concepts
expressed is other .gyp files.

+            ['OS != "mac"', {
+              'cflags': [
+                '-msse',
+              ],
+            }],
+          ],
+          'include_dirs': [
+            '..',
+          ],
+          'sources': [
+            'base/simd/sinc_resampler_sse.cc',
+            'base/simd/vector_math_sse.cc',
+          ],
+        }, # end of target media_sse
+      ],
+    }],
   ],
 }