diff options
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/lp_dec2.c')
| -rw-r--r-- | media/libstagefright/codecs/amrwbenc/src/lp_dec2.c | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/lp_dec2.c b/media/libstagefright/codecs/amrwbenc/src/lp_dec2.c index 1d5d076..9a9dd34 100644 --- a/media/libstagefright/codecs/amrwbenc/src/lp_dec2.c +++ b/media/libstagefright/codecs/amrwbenc/src/lp_dec2.c @@ -17,7 +17,7 @@ /*********************************************************************** * File: lp_dec2.c * * * -* Description:Decimate a vector by 2 with 2nd order fir filter * +* Description:Decimate a vector by 2 with 2nd order fir filter * * * ************************************************************************/ @@ -33,36 +33,36 @@ static Word16 h_fir[L_FIR] = {4260, 7536, 9175, 7536, 4260}; void LP_Decim2( - Word16 x[], /* in/out: signal to process */ - Word16 l, /* input : size of filtering */ - Word16 mem[] /* in/out: memory (size=3) */ - ) + Word16 x[], /* in/out: signal to process */ + Word16 l, /* input : size of filtering */ + Word16 mem[] /* in/out: memory (size=3) */ + ) { - Word16 *p_x, x_buf[L_FRAME + L_MEM]; - Word32 i, j; - Word32 L_tmp; - /* copy initial filter states into buffer */ - p_x = x_buf; - for (i = 0; i < L_MEM; i++) - { - *p_x++ = mem[i]; - mem[i] = x[l - L_MEM + i]; - } - for (i = 0; i < l; i++) - { - *p_x++ = x[i]; - } - for (i = 0, j = 0; i < l; i += 2, j++) - { - p_x = &x_buf[i]; - L_tmp = ((*p_x++) * h_fir[0]); - L_tmp += ((*p_x++) * h_fir[1]); - L_tmp += ((*p_x++) * h_fir[2]); - L_tmp += ((*p_x++) * h_fir[3]); - L_tmp += ((*p_x++) * h_fir[4]); - x[j] = (L_tmp + 0x4000)>>15; - } - return; + Word16 *p_x, x_buf[L_FRAME + L_MEM]; + Word32 i, j; + Word32 L_tmp; + /* copy initial filter states into buffer */ + p_x = x_buf; + for (i = 0; i < L_MEM; i++) + { + *p_x++ = mem[i]; + mem[i] = x[l - L_MEM + i]; + } + for (i = 0; i < l; i++) + { + *p_x++ = x[i]; + } + for (i = 0, j = 0; i < l; i += 2, j++) + { + p_x = &x_buf[i]; + L_tmp = ((*p_x++) * h_fir[0]); + L_tmp += ((*p_x++) * h_fir[1]); + L_tmp += ((*p_x++) * h_fir[2]); + L_tmp += ((*p_x++) * h_fir[3]); + L_tmp += ((*p_x++) * h_fir[4]); + x[j] = (L_tmp + 0x4000)>>15; + } + return; } |