freetdm: make sure gains are not applied to non-voice channels

diff --git a/libs/freetdm/src/ftdm_io.c b/libs/freetdm/src/ftdm_io.c
index 356eba5cb8faa09080c40a449b07b657a3bbb870..f00e7988e3d48d68ea0b8a3cec87e92b72cb4595 100644 (file)
--- a/libs/freetdm/src/ftdm_io.c
+++ b/libs/freetdm/src/ftdm_io.c
@@ -2050,6 +2050,10 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_command(ftdm_channel_t *ftdmchan, ftdm_co
 
        case FTDM_COMMAND_SET_RX_GAIN:
                {
+                       if (!FTDM_IS_VOICE_CHANNEL(ftdmchan)) {
+                               ftdm_log(FTDM_LOG_ERROR, "Cannot set rx gain in non-voice channel of type: %s\n", ftdm_chan_type2str(ftdmchan->type));
+                               GOTO_STATUS(done, FTDM_FAIL);
+                       }
                        ftdmchan->rxgain = FTDM_COMMAND_OBJ_FLOAT;
                        reset_gain_table(ftdmchan->rxgain_table, ftdmchan->rxgain, ftdmchan->native_codec);
                        if (ftdmchan->rxgain == 0.0) {
@@ -2068,6 +2072,10 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_command(ftdm_channel_t *ftdmchan, ftdm_co
                break;
        case FTDM_COMMAND_SET_TX_GAIN:
                {
+                       if (!FTDM_IS_VOICE_CHANNEL(ftdmchan)) {
+                               ftdm_log(FTDM_LOG_ERROR, "Cannot set tx gain in non-voice channel of type: %s\n", ftdm_chan_type2str(ftdmchan->type));
+                               GOTO_STATUS(done, FTDM_FAIL);
+                       }
                        ftdmchan->txgain = FTDM_COMMAND_OBJ_FLOAT;
                        reset_gain_table(ftdmchan->txgain_table, ftdmchan->txgain, ftdmchan->native_codec);
                        if (ftdmchan->txgain == 0.0) {
@@ -2468,17 +2476,17 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_read(ftdm_channel_t *ftdmchan, void *data
        ftdm_assert_return(ftdmchan != NULL, FTDM_FAIL, "ftdmchan is null\n");
        ftdm_assert_return(ftdmchan->fio != NULL, FTDM_FAIL, "No I/O module attached to ftdmchan\n");
        
-    if (!ftdm_test_flag(ftdmchan, FTDM_CHANNEL_OPEN)) {
+       if (!ftdm_test_flag(ftdmchan, FTDM_CHANNEL_OPEN)) {
                snprintf(ftdmchan->last_error, sizeof(ftdmchan->last_error), "channel not open");
-        return FTDM_FAIL;
-    }
+               return FTDM_FAIL;
+       }
 
        if (!ftdmchan->fio->read) {
                snprintf(ftdmchan->last_error, sizeof(ftdmchan->last_error), "method not implemented");
                return FTDM_FAIL;
        }
 
-    status = ftdmchan->fio->read(ftdmchan, data, datalen);
+       status = ftdmchan->fio->read(ftdmchan, data, datalen);
        if (ftdmchan->fds[0] > -1) {
                int dlen = (int) *datalen;
                if (write(ftdmchan->fds[0], data, dlen) != dlen) {