Make the implausible audio length check work with lower frame rates.

diff --git a/mixer.cpp b/mixer.cpp
index db5980d2d79bbdf30d3b005bd3394644120309a3..2eb037c4b6d2903ae60399e4c5cba95a34fb2aab 100644 (file)
--- a/mixer.cpp
+++ b/mixer.cpp
@@ -273,7 +273,8 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode,
 
        int64_t frame_length = find_frame_length(video_format);
 
-       if (audio_frame.len - audio_offset > 30000) {
+       size_t num_samples = (audio_frame.len >= audio_offset) ? (audio_frame.len - audio_offset) / 8 / 3 : 0;
+       if (num_samples > OUTPUT_FREQUENCY / 10) {
                printf("Card %d: Dropping frame with implausible audio length (len=%d, offset=%d) [timecode=0x%04x video_len=%d video_offset=%d video_format=%x)\n",
                        card_index, int(audio_frame.len), int(audio_offset),
                        timecode, int(video_frame.len), int(video_offset), video_format);
@@ -294,7 +295,6 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode,
        card->last_timecode = timecode;
 
        // Convert the audio to stereo fp32 and add it.
-       size_t num_samples = (audio_frame.len >= audio_offset) ? (audio_frame.len - audio_offset) / 8 / 3 : 0;
        vector<float> audio;
        audio.resize(num_samples * 2);
        convert_fixed24_to_fp32(&audio[0], 2, audio_frame.data + audio_offset, 8, num_samples);