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Document how the ref_buf is used.
Originally committed as revision 24551 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -34,6 +34,10 @@
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#define GSM_FRAME_SIZE 160
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typedef struct {
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// Contains first 120 elements from the previous frame
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// (used by long_term_synth according to the "lag"),
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// then in the following 160 elements the current
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// frame is constructed.
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int16_t ref_buf[280];
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int v[9];
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int lar[2][8];
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