Fix handling of zero-length frames when a codec is capable of native PLC.

Issue 9183, patch by Mihai.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@65877 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/codecs/codec_ilbc.c b/codecs/codec_ilbc.c
index 34847fcc70e9f68b4fd28e18e94f94cf678e6c38..637f22d122adbd6065d810efaf71ad7dc09ff909 100644 (file)
--- a/codecs/codec_ilbc.c
+++ b/codecs/codec_ilbc.c
@@ -203,6 +203,7 @@ static struct ast_translator ilbctolin = {
        .sample = ilbctolin_sample,
        .desc_size = sizeof(struct ilbc_coder_pvt),
        .buf_size = BUFFER_SAMPLES * 2,
+       .native_plc = 1,
 };
 
 static struct ast_translator lintoilbc = {

diff --git a/codecs/codec_speex.c b/codecs/codec_speex.c
index 8825f8158ed9f7867ceea1e9cfc34866d03f16e5..c20ca426efb783f8290e9ec535336252950b79c4 100644 (file)
--- a/codecs/codec_speex.c
+++ b/codecs/codec_speex.c
@@ -355,6 +355,7 @@ static struct ast_translator speextolin = {
        .desc_size = sizeof(struct speex_coder_pvt),
        .buffer_samples = BUFFER_SAMPLES,
        .buf_size = BUFFER_SAMPLES * 2,
+       .native_plc = 1,
 };
 
 static struct ast_translator lintospeex = {

diff --git a/include/asterisk/translate.h b/include/asterisk/translate.h
index 5e28c6236cbd10235895cb10d6b72c4a473dcb17..ec939e6b59958ee2f4d7e9ed29d14f8ee1f90f74 100644 (file)
--- a/include/asterisk/translate.h
+++ b/include/asterisk/translate.h
@@ -104,6 +104,7 @@ struct ast_translator {
        int desc_size;                  /*!< size of private descriptor in pvt->pvt, if any */
        int plc_samples;                /*!< set to the plc block size if used, 0 otherwise */
        int useplc;                     /*!< current status of plc, changed at runtime */
+       int native_plc;                 /*!< true if the translator can do native plc */
 
        struct ast_module *module;      /* opaque reference to the parent module */
 

diff --git a/main/translate.c b/main/translate.c
index c9e16b96f85dd2fe990fe788e795095e556e6476..ca044c331b070da59f7404466af053c8cc9b77a3 100644 (file)
--- a/main/translate.c
+++ b/main/translate.c
@@ -174,7 +174,9 @@ static int framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
                                pvt->samples += l;
                                pvt->datalen = pvt->samples * 2;        /* SLIN has 2bytes for 1sample */
                        }
-                       return 0;
+                       /* We don't want generic PLC. If the codec has native PLC, then do that */
+                       if (!pvt->t->native_plc)
+                               return 0;
                }
                if (pvt->samples + f->samples > pvt->t->buffer_samples) {
                        ast_log(LOG_WARNING, "Out of buffer space\n");