diff options
Diffstat (limited to 'frame.c')
-rwxr-xr-x | frame.c | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -1271,3 +1271,25 @@ int ast_frame_adjust_volume(struct ast_frame *f, int adjustment) return 0; } + +int ast_frame_slinear_sum(struct ast_frame *f1, struct ast_frame *f2) +{ + int count; + short *data1, *data2; + + if ((f1->frametype != AST_FRAME_VOICE) || (f1->subclass != AST_FORMAT_SLINEAR)) + return -1; + + if ((f2->frametype != AST_FRAME_VOICE) || (f2->subclass != AST_FORMAT_SLINEAR)) + return -1; + + if (f1->samples != f2->samples) + return -1; + + for (count = 0, data1 = f1->data, data2 = f2->data; + count < f1->samples; + count++, data1++, data2++) + ast_slinear_saturated_add(data1, *data2); + + return 0; +} |