diff options
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/g_pitch.c')
| -rw-r--r-- | media/libstagefright/codecs/amrwbenc/src/g_pitch.c | 72 |
1 files changed, 36 insertions, 36 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/g_pitch.c b/media/libstagefright/codecs/amrwbenc/src/g_pitch.c index d681f2e..98ee87e 100644 --- a/media/libstagefright/codecs/amrwbenc/src/g_pitch.c +++ b/media/libstagefright/codecs/amrwbenc/src/g_pitch.c @@ -17,9 +17,9 @@ /*********************************************************************** * File: g_pitch.c * * * -* Description:Compute the gain of pitch. Result in Q12 * -* if(gain < 0) gain = 0 * -* if(gain > 1.2) gain = 1.2 * +* Description:Compute the gain of pitch. Result in Q12 * +* if(gain < 0) gain = 0 * +* if(gain > 1.2) gain = 1.2 * ************************************************************************/ #include "typedef.h" @@ -27,52 +27,52 @@ #include "math_op.h" Word16 G_pitch( /* (o) Q14 : Gain of pitch lag saturated to 1.2 */ - Word16 xn[], /* (i) : Pitch target. */ - Word16 y1[], /* (i) : filtered adaptive codebook. */ - Word16 g_coeff[], /* : Correlations need for gain quantization. */ - Word16 L_subfr /* : Length of subframe. */ - ) + Word16 xn[], /* (i) : Pitch target. */ + Word16 y1[], /* (i) : filtered adaptive codebook. */ + Word16 g_coeff[], /* : Correlations need for gain quantization. */ + Word16 L_subfr /* : Length of subframe. */ + ) { - Word32 i; - Word16 xy, yy, exp_xy, exp_yy, gain; - /* Compute scalar product <y1[],y1[]> */ + Word32 i; + Word16 xy, yy, exp_xy, exp_yy, gain; + /* Compute scalar product <y1[],y1[]> */ #ifdef ASM_OPT /* asm optimization branch */ - /* Compute scalar product <xn[],y1[]> */ - xy = extract_h(Dot_product12_asm(xn, y1, L_subfr, &exp_xy)); - yy = extract_h(Dot_product12_asm(y1, y1, L_subfr, &exp_yy)); + /* Compute scalar product <xn[],y1[]> */ + xy = extract_h(Dot_product12_asm(xn, y1, L_subfr, &exp_xy)); + yy = extract_h(Dot_product12_asm(y1, y1, L_subfr, &exp_yy)); #else - /* Compute scalar product <xn[],y1[]> */ - xy = extract_h(Dot_product12(xn, y1, L_subfr, &exp_xy)); - yy = extract_h(Dot_product12(y1, y1, L_subfr, &exp_yy)); + /* Compute scalar product <xn[],y1[]> */ + xy = extract_h(Dot_product12(xn, y1, L_subfr, &exp_xy)); + yy = extract_h(Dot_product12(y1, y1, L_subfr, &exp_yy)); #endif - g_coeff[0] = yy; - g_coeff[1] = exp_yy; - g_coeff[2] = xy; - g_coeff[3] = exp_xy; + g_coeff[0] = yy; + g_coeff[1] = exp_yy; + g_coeff[2] = xy; + g_coeff[3] = exp_xy; - /* If (xy < 0) gain = 0 */ - if (xy < 0) - return ((Word16) 0); + /* If (xy < 0) gain = 0 */ + if (xy < 0) + return ((Word16) 0); - /* compute gain = xy/yy */ + /* compute gain = xy/yy */ - xy >>= 1; /* Be sure xy < yy */ - gain = div_s(xy, yy); + xy >>= 1; /* Be sure xy < yy */ + gain = div_s(xy, yy); - i = exp_xy; - i -= exp_yy; + i = exp_xy; + i -= exp_yy; - gain = shl(gain, i); + gain = shl(gain, i); - /* if (gain > 1.2) gain = 1.2 in Q14 */ - if(gain > 19661) - { - gain = 19661; - } - return (gain); + /* if (gain > 1.2) gain = 1.2 in Q14 */ + if(gain > 19661) + { + gain = 19661; + } + return (gain); } |