1 files changed, 106 insertions, 0 deletions
diff --git a/libswresample/rematrix_template.c b/libswresample/rematrix_template.c
new file mode 100644
index 0000000000..95a3b9a8c0
--- /dev/null
+++ b/libswresample/rematrix_template.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2011-2012 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
+ */
+
+#if defined(TEMPLATE_REMATRIX_FLT)
+#    define R(x) x
+#    define SAMPLE float
+#    define COEFF float
+#    define INTER float
+#    define RENAME(x) x ## _float
+#elif defined(TEMPLATE_REMATRIX_DBL)
+#    define R(x) x
+#    define SAMPLE double
+#    define COEFF double
+#    define INTER double
+#    define RENAME(x) x ## _double
+#elif defined(TEMPLATE_REMATRIX_S16)
+#    define R(x) (((x) + 16384)>>15)
+#    define SAMPLE int16_t
+#    define COEFF int
+#    define INTER int
+#    define RENAME(x) x ## _s16
+#elif defined(TEMPLATE_REMATRIX_S32)
+#    define R(x) (((x) + 16384)>>15)
+#    define SAMPLE int32_t
+#    define COEFF int
+#    define INTER int64_t
+#    define RENAME(x) x ## _s32
+#endif
+
+typedef void (RENAME(mix_any_func_type))(SAMPLE **out, const SAMPLE **in1, COEFF *coeffp, integer len);
+
+static void RENAME(sum2)(SAMPLE *out, const SAMPLE *in1, const SAMPLE *in2, COEFF *coeffp, integer index1, integer index2, integer len){
+    int i;
+    INTER coeff1 = coeffp[index1];
+    INTER 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, integer index, integer len){
+    int i;
+    INTER 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, integer len){
+    int i;
+
+    for(i=0; i<len; i++) {
+        INTER t = in[2][i]*(INTER)coeffp[0*6+2] + in[3][i]*(INTER)coeffp[0*6+3];
+        out[0][i] = R(t + in[0][i]*(INTER)coeffp[0*6+0] + in[4][i]*(INTER)coeffp[0*6+4]);
+        out[1][i] = R(t + in[1][i]*(INTER)coeffp[1*6+1] + in[5][i]*(INTER)coeffp[1*6+5]);
+    }
+}
+
+static void RENAME(mix8to2)(SAMPLE **out, const SAMPLE **in, COEFF *coeffp, integer len){
+    int i;
+
+    for(i=0; i<len; i++) {
+        INTER t = in[2][i]*(INTER)coeffp[0*8+2] + in[3][i]*(INTER)coeffp[0*8+3];
+        out[0][i] = R(t + in[0][i]*(INTER)coeffp[0*8+0] + in[4][i]*(INTER)coeffp[0*8+4] + in[6][i]*(INTER)coeffp[0*8+6]);
+        out[1][i] = R(t + in[1][i]*(INTER)coeffp[1*8+1] + in[5][i]*(INTER)coeffp[1*8+5] + in[7][i]*(INTER)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;
+}
+
+#undef R
+#undef SAMPLE
+#undef COEFF
+#undef INTER
+#undef RENAME