Add some asserts that will trigger if a driver gives very bogus fps values.

[nageru] / mixer.cpp

diff --git a/mixer.cpp b/mixer.cpp
index 1934ee9429bcae271b3c6d22a9df64e2820a49fc..b76b6745ed2cc61a1f1d2e05358f682c70acc4d8 100644 (file)
--- a/mixer.cpp
+++ b/mixer.cpp
@@ -361,6 +361,7 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode,
        }
 
        int64_t frame_length = int64_t(TIMEBASE) * video_format.frame_rate_den / video_format.frame_rate_nom;
+       assert(frame_length > 0);
 
        size_t num_samples = (audio_frame.len > audio_offset) ? (audio_frame.len - audio_offset) / audio_format.num_channels / (audio_format.bits_per_sample / 8) : 0;
        if (num_samples > OUTPUT_FREQUENCY / 10) {