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  1. Copyright (c) 2010, Google Inc. All rights reserved.
  2. Redistribution and use in source and binary forms, with or without
  3. modification, are permitted provided that the following conditions are
  4. met:
  5. * Redistributions of source code must retain the above copyright
  6. notice, this list of conditions and the following disclaimer.
  7. * Redistributions in binary form must reproduce the above copyright
  8. notice, this list of conditions and the following disclaimer in
  9. the documentation and/or other materials provided with the
  10. distribution.
  11. * Neither the name of Google nor the names of its contributors may
  12. be used to endorse or promote products derived from this software
  13. without specific prior written permission.
  14. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  15. "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  16. LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  17. A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  18. HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  19. SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  20. LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21. DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22. THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23. (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  24. OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25. Additional IP Rights Grant (Patents)
  26. ------------------------------------
  27. "These implementations" means the copyrightable works that implement the WebM
  28. codecs distributed by Google as part of the WebM Project.
  29. Google hereby grants to you a perpetual, worldwide, non-exclusive, no-charge,
  30. royalty-free, irrevocable (except as stated in this section) patent license to
  31. make, have made, use, offer to sell, sell, import, transfer, and otherwise
  32. run, modify and propagate the contents of these implementations of WebM, where
  33. such license applies only to those patent claims, both currently owned by
  34. Google and acquired in the future, licensable by Google that are necessarily
  35. infringed by these implementations of WebM. This grant does not include claims
  36. that would be infringed only as a consequence of further modification of these
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  38. or agree to the institution of patent litigation or any other patent
  39. enforcement activity against any entity (including a cross-claim or
  40. counterclaim in a lawsuit) alleging that any of these implementations of WebM
  41. or any code incorporated within any of these implementations of WebM
  42. constitute direct or contributory patent infringement, or inducement of
  43. patent infringement, then any patent rights granted to you under this License
  44. for these implementations of WebM shall terminate as of the date such
  45. litigation is filed.