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mp3parse: Allow more bits to change in headers during resynch
Be more lenient about what we accept as changing bits in a header - basically, only require that the mp3 sync marker is present, for the mpeg version, layer and samplerate. Fixes: #581464
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1 changed files with 5 additions and 3 deletions
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@ -1273,13 +1273,15 @@ gst_mp3parse_chain (GstPad * pad, GstBuffer * buf)
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/* mask the bits which are allowed to differ between frames */
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#define HDRMASK ~((0xF << 12) /* bitrate */ | \
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(0x1 << 9) /* padding */ | \
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(0x3 << 4)) /* mode extension */
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(0xf << 4) /* mode|mode extension */ | \
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(0xf)) /* copyright|emphasis */
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/* require 2 matching headers in a row */
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if ((header2 & HDRMASK) != (header & HDRMASK)) {
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GST_DEBUG_OBJECT (mp3parse, "next header doesn't match "
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"(header=%08X, header2=%08X, bpf=%d)",
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(unsigned int) header, (unsigned int) header2, bpf);
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"(header=%08X (%08X), header2=%08X (%08X), bpf=%d)",
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(guint) header, (guint) header & HDRMASK, (guint) header2,
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(guint) header2 & HDRMASK, bpf);
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/* This frame is invalid. Start looking for a valid frame at the
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* next position in the stream */
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mp3parse->resyncing = TRUE;
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