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This is gavl, a library for handling uncompressed audio- and video data.
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Read the file INSTALL for detailed installation instructions.
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Gavl defines generic types for audio and video formats,
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which are applicable to a wide range of multimedia applications.
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In addition, it provides conversion functions from all possible formats
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If you want to write a multimedia application, gavl will help you a lot:
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You don't have to mess around with the large varieties of pixelformats,
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interleaving modes, audio sample formats and so on.
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- Support for the following pixelformats:
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15 bpp RGB, 15 bpp BGR, 16 bpp RGB, 16 bpp BGR, 24 bpp RGB, 24 bpp BGR
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32 bpp RGB, 32 bpp BGR, 32 bpp RGBA, YUV 422 (YUY2), YUV 420 Planar,
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YUV 422 Planar (mpeg and jpeg), YUV 444 Planar (mpeg and jpeg)
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Conversions from all pixelformat to all others (NO multistep conversions,
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each conversion has it's own function)
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- Audio samples can be 8 bit and 16 PCM (signed and unsigned),
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32 bit signed and floating point.
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- High quality samplerate conversion using the Secret Rabbit Code
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- Video frames will allocated with memory aligned scanlines for faster
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See the header file include/gavl.h and the sample files
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src/colorspace_test.c and src/colorspace_time.c for
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information and how to use this thing.
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For testing the library, the src directory contains
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Makes your current directory full of pngs, one test file
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for each colorspace and one for each conversion.
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Ideally, all these pictures should look the same.
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Makes all defined conversions 20 times and prints, how long
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it needed. Good for making C <-> MMX speed comparisons.
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Every programmer, who agrees to this kind of API is welcome to
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integrate gavl into his/her project so we can save some
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energy while writing/searching the best and fastest
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README
