README 2.4 KB

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  1. This README covers the Tremolo library, version 0.08.
  2. Tremolo is a modified version of the Ogg Vorbis 'Tremor' integer
  3. playback codec, branching from 1.0.2 of the low memory branch of
  4. that source from svn.
  5. Previous versions of Tremolo have been released under the GNU GPL
  6. but thanks to a grant from Google, this version is back to being
  7. released under the same license as vanilla Tremor.
  8. Robin Watts
  9. tremolo@wss.co.uk
  10. ----------------------------------------------------------------------
  11. This README covers the Ogg Vorbis 'Tremor' integer playback codec
  12. source as of date 2002 09 02, version 1.0.0.
  13. ******
  14. The C source in this package will build on any ANSI C compiler and
  15. function completely and properly on any platform. The included build
  16. system assumes GNU build system and make tools (m4, automake,
  17. autoconf, libtool and gmake). GCC is not required, although GCC is
  18. the most tested compiler. To build using GNU tools, type in the
  19. source directory:
  20. ./autogen.sh
  21. make
  22. Currently, the source implements playback in pure C on all platforms
  23. except ARM, where a [currently] small amount of assembly (see
  24. asm_arm.h) is used to implement 64 bit math operations and fast LSP
  25. computation. If building on ARM without the benefit of GNU build
  26. system tools, be sure that '_ARM_ASSEM_' is #defined by the build
  27. system if this assembly is desired, else the resulting library will
  28. use whatever 64 bit math builtins the compiler implements.
  29. No math library is required by this source. No floating point
  30. operations are used at any point in either setup or decode. This
  31. decoder library will properly decode any past, current or future
  32. Vorbis I file or stream.
  33. ********
  34. The build system produces a static and [when supported by the OS]
  35. dynamic library named 'libvorbisidec'. This library exposes an API
  36. nearly identical to the BSD reference library's 'libvorbisfile',
  37. including all the features familiar to users of vorbisfile. This API
  38. is similar enough that the proper header file to include is named
  39. 'ivorbisfile.h' [included in the source build directory]. Lower level
  40. libvorbis-style headers and structures are in 'ivorbiscodec.h'
  41. [included in the source build directory]. A simple example program,
  42. ivorbisfile_example.c, can be built with 'make example'.
  43. ********
  44. Detailed Tremor API Documentation begins at doc/index.html
  45. Monty
  46. xiph.org