add FLAC__format_blocksize_is_subset()
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@ -115,12 +115,12 @@
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Interface changes (see also the <a href="http://flac.sourceforge.net/api/group__porting__1__2__1__to__1__2__2.html">porting guide</a> for specific instructions on porting to FLAC 1.2.2):
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Interface changes:
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<ul>
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<li>
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libFLAC:
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<ul>
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<li>(none)</li>
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<li><b>Added</b> FLAC__format_blocksize_is_subset()</li>
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@ -213,7 +213,7 @@
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Interface changes (see also the <a href="http://flac.sourceforge.net/api/group__porting__1__2__0__to__1__2__1.html">porting guide</a> for specific instructions on porting to FLAC 1.2.1):
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Interface changes:
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<ul>
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<li>
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libFLAC:
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@ -879,6 +879,18 @@ extern FLAC_API const unsigned FLAC__STREAM_METADATA_LENGTH_LEN; /**< == 24 (bit
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*/
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FLAC_API FLAC__bool FLAC__format_sample_rate_is_valid(unsigned sample_rate);
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/** Tests that a blocksize at the given sample rate is valid for the FLAC
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* subset.
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*
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* \param blocksize The blocksize to test for compliance.
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* \param sample_rate The sample rate is needed, since the valid subset
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* blocksize depends on the sample rate.
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* \retval FLAC__bool
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* \c true if the given blocksize conforms to the specification for the
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* subset at the given sample rate, else \c false.
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*/
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FLAC_API FLAC__bool FLAC__format_blocksize_is_subset(unsigned blocksize, unsigned sample_rate);
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/** Tests that a sample rate is valid for the FLAC subset. The subset rules
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* for valid sample rates are slightly more complex since the rate has to
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* be expressible completely in the frame header.
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@ -223,6 +223,16 @@ FLAC_API FLAC__bool FLAC__format_sample_rate_is_valid(unsigned sample_rate)
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return true;
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}
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FLAC_API FLAC__bool FLAC__format_blocksize_is_subset(unsigned blocksize, unsigned sample_rate)
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{
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if(blocksize > 16384)
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return false;
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else if(sample_rate <= 48000 && blocksize > 4608)
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return false;
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else
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return true;
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}
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FLAC_API FLAC__bool FLAC__format_sample_rate_is_subset(unsigned sample_rate)
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{
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if(
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