* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+typedef void (RENAME(mix_any_func_type))(SAMPLE **out, const SAMPLE **in1, COEFF *coeffp, int len);
-static void RENAME(sum2)(SAMPLE *out, const SAMPLE *in1, const SAMPLE *in2, COEFF coeff1, COEFF coeff2, int len){
+static void RENAME(sum2)(SAMPLE *out, const SAMPLE *in1, const SAMPLE *in2, COEFF *coeffp, int index1, int index2, int len){
int i;
+ COEFF coeff1 = coeffp[index1];
+ COEFF coeff2 = coeffp[index2];
for(i=0; i<len; i++)
out[i] = R(coeff1*in1[i] + coeff2*in2[i]);
}
-static void RENAME(copy)(SAMPLE *out, const SAMPLE *in, COEFF coeff, int len){
- if(coeff == ONE){
- memcpy(out, in, sizeof(SAMPLE)*len);
- }else{
- int i;
- for(i=0; i<len; i++)
- out[i] = R(coeff*in[i]);
+static void RENAME(copy)(SAMPLE *out, const SAMPLE *in, COEFF *coeffp, int index, int len){
+ int i;
+ COEFF coeff = coeffp[index];
+ for(i=0; i<len; i++)
+ out[i] = R(coeff*in[i]);
+}
+
+static void RENAME(mix6to2)(SAMPLE **out, const SAMPLE **in, COEFF *coeffp, int len){
+ int i;
+
+ for(i=0; i<len; i++) {
+ INTER t = in[2][i]*coeffp[0*6+2] + in[3][i]*coeffp[0*6+3];
+ out[0][i] = R(t + in[0][i]*coeffp[0*6+0] + in[4][i]*coeffp[0*6+4]);
+ out[1][i] = R(t + in[1][i]*coeffp[1*6+1] + in[5][i]*coeffp[1*6+5]);
+ }
+}
+
+static void RENAME(mix8to2)(SAMPLE **out, const SAMPLE **in, COEFF *coeffp, int len){
+ int i;
+
+ for(i=0; i<len; i++) {
+ INTER t = in[2][i]*coeffp[0*8+2] + in[3][i]*coeffp[0*8+3];
+ out[0][i] = R(t + in[0][i]*coeffp[0*8+0] + in[4][i]*coeffp[0*8+4] + in[6][i]*coeffp[0*8+6]);
+ out[1][i] = R(t + in[1][i]*coeffp[1*8+1] + in[5][i]*coeffp[1*8+5] + in[7][i]*coeffp[1*8+7]);
}
}
+static RENAME(mix_any_func_type) *RENAME(get_mix_any_func)(SwrContext *s){
+ if( s->out_ch_layout == AV_CH_LAYOUT_STEREO && (s->in_ch_layout == AV_CH_LAYOUT_5POINT1 || s->in_ch_layout == AV_CH_LAYOUT_5POINT1_BACK)
+ && s->matrix[0][2] == s->matrix[1][2] && s->matrix[0][3] == s->matrix[1][3]
+ && !s->matrix[0][1] && !s->matrix[0][5] && !s->matrix[1][0] && !s->matrix[1][4]
+ )
+ return RENAME(mix6to2);
+
+ if( s->out_ch_layout == AV_CH_LAYOUT_STEREO && s->in_ch_layout == AV_CH_LAYOUT_7POINT1
+ && s->matrix[0][2] == s->matrix[1][2] && s->matrix[0][3] == s->matrix[1][3]
+ && !s->matrix[0][1] && !s->matrix[0][5] && !s->matrix[1][0] && !s->matrix[1][4]
+ && !s->matrix[0][7] && !s->matrix[1][6]
+ )
+ return RENAME(mix8to2);
+
+ return NULL;
+}