Fixes some return without va_end in the api, adds tests.

Also makes the CTL bad argument handling more consistent to avoid mistakes
 like that in the future.  Also updates the variable duration docs.

1 files changed, 10 insertions, 20 deletions

diff --git a/src/opus_decoder.c b/src/opus_decoder.c
index 6bc70919..13a910f4 100644
--- a/src/opus_decoder.c
+++ b/src/opus_decoder.c
@@ -937,12 +937,14 @@ int opus_decoder_ctl(OpusDecoder *st, int request, ...)
    case OPUS_GET_BANDWIDTH_REQUEST:
    {
       opus_int32 *value = va_arg(ap, opus_int32*);
+      if (!value) goto bad_arg;
       *value = st->bandwidth;
    }
    break;
    case OPUS_GET_FINAL_RANGE_REQUEST:
    {
       opus_uint32 *value = va_arg(ap, opus_uint32*);
+      if (!value) goto bad_arg;
       *value = st->rangeFinal;
    }
    break;
@@ -961,22 +963,14 @@ int opus_decoder_ctl(OpusDecoder *st, int request, ...)
    case OPUS_GET_SAMPLE_RATE_REQUEST:
    {
       opus_int32 *value = va_arg(ap, opus_int32*);
-      if (value==NULL)
-      {
-         ret = OPUS_BAD_ARG;
-         break;
-      }
+      if (!value) goto bad_arg;
       *value = st->Fs;
    }
    break;
    case OPUS_GET_PITCH_REQUEST:
    {
       opus_int32 *value = va_arg(ap, opus_int32*);
-      if (value==NULL)
-      {
-         ret = OPUS_BAD_ARG;
-         break;
-      }
+      if (!value) goto bad_arg;
       if (st->prev_mode == MODE_CELT_ONLY)
          celt_decoder_ctl(celt_dec, OPUS_GET_PITCH(value));
       else
@@ -986,28 +980,21 @@ int opus_decoder_ctl(OpusDecoder *st, int request, ...)
    case OPUS_GET_GAIN_REQUEST:
    {
       opus_int32 *value = va_arg(ap, opus_int32*);
-      if (value==NULL)
-      {
-         ret = OPUS_BAD_ARG;
-         break;
-      }
+      if (!value) goto bad_arg;
       *value = st->decode_gain;
    }
    break;
    case OPUS_SET_GAIN_REQUEST:
    {
        opus_int32 value = va_arg(ap, opus_int32);
-       if (value<-32768 || value>32767)
-       {
-          ret = OPUS_BAD_ARG;
-          break;
-       }
+       if (value<-32768 || value>32767) goto bad_arg;
        st->decode_gain = value;
    }
    break;
    case OPUS_GET_LAST_PACKET_DURATION_REQUEST:
    {
       opus_uint32 *value = va_arg(ap, opus_uint32*);
+      if (!value) goto bad_arg;
       *value = st->last_packet_duration;
    }
    break;
@@ -1019,6 +1006,9 @@ int opus_decoder_ctl(OpusDecoder *st, int request, ...)
 
    va_end(ap);
    return ret;
+bad_arg:
+   va_end(ap);
+   return OPUS_BAD_ARG;
 }
 
 void opus_decoder_destroy(OpusDecoder *st)