[FFmpeg-cvslog] r20602 - in trunk/libavcodec: lsp.c lsp.h
vitor
subversion
Tue Nov 24 17:58:50 CET 2009
Author: vitor
Date: Tue Nov 24 17:58:50 2009
New Revision: 20602
Log:
Make lsp2polyf() function non-static for upcoming usage in SIPR
Modified:
trunk/libavcodec/lsp.c
trunk/libavcodec/lsp.h
Modified: trunk/libavcodec/lsp.c
==============================================================================
--- trunk/libavcodec/lsp.c Tue Nov 24 16:54:17 2009 (r20601)
+++ trunk/libavcodec/lsp.c Tue Nov 24 17:58:50 2009 (r20602)
@@ -128,17 +128,7 @@ void ff_acelp_lp_decode(int16_t* lp_1st,
ff_acelp_lsp2lpc(lp_2nd, lsp_2nd, lp_order >> 1);
}
-/**
- * Computes the Pa / (1 + z(-1)) or Qa / (1 - z(-1)) coefficients
- * needed for LSP to LPC conversion.
- * We only need to calculate the 6 first elements of the polynomial.
- *
- * @param lsp line spectral pairs in cosine domain
- * @param f [out] polynomial input/output as a vector
- *
- * TIA/EIA/IS-733 2.4.3.3.5-1/2
- */
-static void lsp2polyf(const double *lsp, double *f, int lp_half_order)
+void ff_lsp2polyf(const double *lsp, double *f, int lp_half_order)
{
int i, j;
@@ -162,8 +152,8 @@ void ff_acelp_lspd2lpc(const double *lsp
assert(lp_half_order <= MAX_LP_HALF_ORDER);
- lsp2polyf(lsp, pa, lp_half_order);
- lsp2polyf(lsp + 1, qa, lp_half_order);
+ ff_lsp2polyf(lsp, pa, lp_half_order);
+ ff_lsp2polyf(lsp + 1, qa, lp_half_order);
while (lp_half_order--) {
double paf = pa[lp_half_order+1] + pa[lp_half_order];
Modified: trunk/libavcodec/lsp.h
==============================================================================
--- trunk/libavcodec/lsp.h Tue Nov 24 16:54:17 2009 (r20601)
+++ trunk/libavcodec/lsp.h Tue Nov 24 17:58:50 2009 (r20602)
@@ -104,4 +104,16 @@ void ff_acelp_lspd2lpc(const double *lsp
*/
void ff_sort_nearly_sorted_floats(float *vals, int len);
+/**
+ * Computes the Pa / (1 + z(-1)) or Qa / (1 - z(-1)) coefficients
+ * needed for LSP to LPC conversion.
+ * We only need to calculate the 6 first elements of the polynomial.
+ *
+ * @param lsp line spectral pairs in cosine domain
+ * @param f [out] polynomial input/output as a vector
+ *
+ * TIA/EIA/IS-733 2.4.3.3.5-1/2
+ */
+void ff_lsp2polyf(const double *lsp, double *f, int lp_half_order);
+
#endif /* AVCODEC_LSP_H */
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