add some asserts

diff --git a/src/libFLAC/stream_decoder.c b/src/libFLAC/stream_decoder.c
index 137936d..578d1c5 100644 (file)
--- a/src/libFLAC/stream_decoder.c
+++ b/src/libFLAC/stream_decoder.c
@@ -649,14 +649,17 @@ bool stream_decoder_read_frame_(FLAC__StreamDecoder *decoder, bool *got_a_frame)
                                /* no adjustment needed */
                                break;
                        case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
+                               assert(decoder->guts->frame.header.channels == 2);
                                if(channel == 1)
                                        bps++;
                                break;
                        case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
+                               assert(decoder->guts->frame.header.channels == 2);
                                if(channel == 0)
                                        bps++;
                                break;
                        case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
+                               assert(decoder->guts->frame.header.channels == 2);
                                if(channel == 1)
                                        bps++;
                                break;