1 files changed, 74 insertions, 0 deletions
diff --git a/libswresample/rematrix_template.c b/libswresample/rematrix_template.c
new file mode 100644
index 0000000000..b3ed87e65f
--- /dev/null
+++ b/libswresample/rematrix_template.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2011 Michael Niedermayer (michaelni@gmx.at)
+ *
+ * This file is part of libswresample
+ *
+ * libswresample is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * libswresample is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with libswresample; if not, write to the Free Software
+ * 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 *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 *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;
+}