2003-11-05 10:38:37 +00:00
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Old versus new PCM API (values returned using indirect pointers)
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================================================================
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From the binary compatibility view, there is no change. For compilation,
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1.0 ALSA applications do not need any change. The older applications must
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use this include sequence:
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#define ALSA_PCM_OLD_HW_PARAMS_API
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#define ALSA_PCM_OLD_SW_PARAMS_API
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#include <alsa/asoundlib.h>
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If you use already the new API, you may remove old defines selecting
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this API, because they are no longer used:
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#define ALSA_PCM_NEW_HW_PARAMS_API
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#define ALSA_PCM_NEW_SW_PARAMS_API
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2004-12-21 14:11:00 +00:00
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Verbose Error Messages
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======================
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Since version 1.0.8, assert() for some non-fatal errors are removed
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and error messages are no longer shown to stderr as default. Instead,
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the error messages appear only when the environment variable
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LIBASOUND_DEBUG is set. When LIBASOUND_DEBUG=assert is set, the
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default error message handler calls assert() to catch with a
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debugger.
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This feature is disabled when --with-debug=no is passed to configure,
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i.e. no strict checking is done in alsa-lib.
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