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Make the LSP naming more consistent

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Use the convention from lsp.c: an LSF is a frequency, an LSP is the
cosine of an LSF, and LSP functions should have an ff_acelp prefix.
Use a "d" suffix to specify doubles.

Patch by Colin McQuillan ( m.niloc googlemail com )

Originally committed as revision 19570 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Colin McQuillan
2009-08-03 08:31:20 +00:00
committed by Robert Swain
parent b5fe06abf0
commit 1e1e02eacd
2 changed files with 13 additions and 13 deletions
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8
libavcodec/qcelpdec.c
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@ -80,7 +80,7 @@ typedef struct
*
* TIA/EIA/IS-733 2.4.3.3.5
*/
void ff_celp_lspf2lpc(const double *lspf, float *lpc);
void ff_acelp_lspd2lpc(const double *lsp, float *lpc);
/**
* Initialize the speech codec according to the specification.
@ -604,14 +604,14 @@ static void apply_pitch_filters(QCELPContext *q, float *cdn_vector)
*/
static void lspf2lpc(const float *lspf, float *lpc)
{
double lsf[10];
double lsp[10];
double bandwidth_expansion_coeff = QCELP_BANDWIDTH_EXPANSION_COEFF;
int i;
for (i=0; i<10; i++)
lsf[i] = cos(M_PI * lspf[i]);
lsp[i] = cos(M_PI * lspf[i]);
ff_celp_lspf2lpc(lsf, lpc);
ff_acelp_lspd2lpc(lsp, lpc);
for (i=0; i<10; i++)
{