diff options
Diffstat (limited to 'main/translate.c')
| -rw-r--r-- | main/translate.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/main/translate.c b/main/translate.c index 396c5522e..26f9c9bee 100644 --- a/main/translate.c +++ b/main/translate.c @@ -524,6 +524,34 @@ struct ast_trans_pvt *ast_translator_build_path(struct ast_format *dst, struct a return head; } +static struct ast_frame *generate_interpolated_slin(struct ast_trans_pvt *p, struct ast_frame *f) +{ + struct ast_frame res = { AST_FRAME_VOICE }; + + /* + * If we've gotten here then we should have an interpolated frame that was not handled + * by the translation codec. So create an interpolated frame in the appropriate format + * that was going to be written. This frame might be handled later by other resources. + * For instance, generic plc. + * + * Note, generic plc is currently only available for the format type 'slin' (8KHz only - + * The generic plc code appears to have been based around that). Generic plc is filled + * in later on frame write. + */ + if (!ast_opt_generic_plc || f->datalen != 0 || + ast_format_cmp(p->explicit_dst, ast_format_slin) == AST_FORMAT_CMP_NOT_EQUAL) { + return NULL; + } + + res.subclass.format = ast_format_cache_get_slin_by_rate(8000); /* ref bumped on dup */ + res.samples = f->samples; + res.datalen = 0; + res.data.ptr = NULL; + res.offset = AST_FRIENDLY_OFFSET; + + return ast_frdup(&res); +} + /*! \brief do the actual translation */ struct ast_frame *ast_translate(struct ast_trans_pvt *path, struct ast_frame *f, int consume) { @@ -586,6 +614,11 @@ struct ast_frame *ast_translate(struct ast_trans_pvt *path, struct ast_frame *f, } out = p->t->frameout(p); } + + if (!out) { + out = generate_interpolated_slin(path, f); + } + if (out) { /* we have a frame, play with times */ if (!ast_tvzero(delivery)) { |