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Make ff_acelp_lp_synthesis_filter() receives a pointer to the actual filter coefficients and not the pointer minus one

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Originally committed as revision 14031 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-06-29 21:37:03 +00:00
parent b83ff6c700
commit fe4a5b185f
3 changed files with 7 additions and 3 deletions
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4
libavcodec/acelp_filters.c
View File

@ -121,6 +121,10 @@ int ff_acelp_lp_synthesis_filter(
{
int i,n;
// These two lines are two avoid a -1 subtraction in the main loop
filter_length++;
filter_coeffs--;
for(n=0; n<buffer_length; n++)
{
int sum = rounder;

2
libavcodec/acelp_filters.h
View File

@ -125,7 +125,7 @@ void ff_acelp_convolve_circ(
* \param filter_coeffs filter coefficients (-0x8000 <= (3.12) < 0x8000)
* \param in input signal
* \param buffer_length amount of data to process
* \param filter_length filter length (11 for 10th order LP filter)
* \param filter_length filter length (10 for 10th order LP filter)
* \param stop_on_overflow 1 - return immediately if overflow occurs
* 0 - ignore overflows
* \param rounder the amount to add for rounding (usually 0x800 or 0xfff)

4
libavcodec/ra144.c
View File

@ -209,9 +209,9 @@ static void do_output_subblock(RA144Context *ractx, const uint16_t *lpc_coefs,
BLOCKSIZE*sizeof(*ractx->curr_sblock));
if (ff_acelp_lp_synthesis_filter(
ractx->curr_sblock + 10, lpc_coefs -1,
ractx->curr_sblock + 10, lpc_coefs,
ractx->curr_sblock + 10, BLOCKSIZE,
11, 1, 0xfff)
10, 1, 0xfff)
)
memset(ractx->curr_sblock, 0, 50*sizeof(*ractx->curr_sblock));
}