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