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translate: generic plc not filled in after translation

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If during translation a codec could not handle a given frame the translation
core would return NULL, thus not passing along the "missing" frame. Due to this
there was no frame to apply generic plc to, thus rendering it useless.

This patch makes it so the translation core produces an interpolated slin frame
in the cases where an attempt was made to translate to slin, but failed. This
interpolated frame is then passed along and can be used by the generic plc
algorithms to fill in the frame.

ASTERISK-27814 #close

Change-Id: I133d084da87adef913bf2ecc9c9240e3eaf4f40a
This commit is contained in:
Kevin Harwell
2018-04-18 15:59:38 -05:00
parent a9c74fdc04
commit ff652711c7
2 changed files with 39 additions and 0 deletions
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6
formats/format_sln.c
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@@ -54,6 +54,12 @@ static struct ast_frame *generic_read(struct ast_filestream *s, int *whennext, u
static int slinear_write(struct ast_filestream *fs, struct ast_frame *f)
{
int res;
/* Don't try to write an interpolated frame */
if (f->datalen == 0) {
return 0;
}
if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) {
ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno));
return -1;