From 08f60a35b452967091aec8426f97c502226090e2 Mon Sep 17 00:00:00 2001 From: James Almer Date: Mon, 3 Aug 2020 10:40:10 -0300 Subject: avcodec/mpegaudiodec_template: disable CRC checking for layers 1 and 2 Layers 1 and 2 use lengths in bits which are not a multiple of 8, and our CRC works on a per-byte basis. Based on b48397e7b8 Reviewed-by: Lynne Signed-off-by: James Almer --- libavcodec/mpegaudiodec_template.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/mpegaudiodec_template.c b/libavcodec/mpegaudiodec_template.c index 3d7e3ba4f2..3ae73d3c8d 100644 --- a/libavcodec/mpegaudiodec_template.c +++ b/libavcodec/mpegaudiodec_template.c @@ -1568,7 +1568,7 @@ static int mp_decode_frame(MPADecodeContext *s, OUT_INT **samples, if (s->error_protection) { uint16_t crc = get_bits(&s->gb, 16); - if (s->err_recognition & AV_EF_CRCCHECK) { + if (s->err_recognition & AV_EF_CRCCHECK && s->layer == 3) { const int sec_len = s->lsf ? ((s->nb_channels == 1) ? 9 : 17) : ((s->nb_channels == 1) ? 17 : 32); const AVCRC *crc_tab = av_crc_get_table(AV_CRC_16_ANSI); -- cgit v1.2.3