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flacdec: improve error handling and resilience

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... by noting that one occurred in the first place, and then appropriately
ignoring some transient ones.
This commit is contained in:
Mark Nauwelaerts 2012-03-16 18:23:29 +01:00
parent e300675384
commit 19121249bd
2 changed files with 37 additions and 2 deletions
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37
ext/flac/gstflacdec.c
View file

@ -542,6 +542,26 @@ gst_flac_dec_scan_for_last_block (GstFlacDec * flacdec, gint64 * samples)
}
}
static gboolean
gst_flac_dec_handle_decoder_error (GstFlacDec * dec, gboolean msg)
{
gboolean ret;
dec->error_count++;
if (dec->error_count > 10) {
if (msg)
GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL), (NULL));
dec->last_flow = GST_FLOW_ERROR;
ret = TRUE;
} else {
GST_DEBUG_OBJECT (dec, "ignoring error for now at count %d",
dec->error_count);
ret = FALSE;
}
return ret;
}
static void
gst_flac_extract_picture_buffer (GstFlacDec * dec,
const FLAC__StreamMetadata * metadata)
@ -672,8 +692,8 @@ gst_flac_dec_error_cb (const FLAC__StreamDecoder * d,
break;
}
GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL), ("%s (%d)", error, status));
dec->last_flow = GST_FLOW_ERROR;
if (gst_flac_dec_handle_decoder_error (dec, FALSE))
GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL), ("%s (%d)", error, status));
}
static FLAC__StreamDecoderSeekStatus
@ -1023,6 +1043,9 @@ gst_flac_dec_write (GstFlacDec * flacdec, const FLAC__Frame * frame,
g_assert_not_reached ();
}
if (flacdec->error_count)
flacdec->error_count--;
if (!flacdec->seeking) {
GST_DEBUG_OBJECT (flacdec, "pushing %d samples at offset %" G_GINT64_FORMAT
" (%" GST_TIME_FORMAT " + %" GST_TIME_FORMAT ")",
@ -1503,6 +1526,15 @@ gst_flac_dec_chain (GstPad * pad, GstBuffer * buf)
if (!FLAC__stream_decoder_process_single (dec->decoder)) {
GST_DEBUG_OBJECT (dec, "process_single failed");
}
if (FLAC__stream_decoder_get_state (dec->decoder) ==
FLAC__STREAM_DECODER_ABORTED) {
GST_WARNING_OBJECT (dec, "Read callback caused internal abort");
/* allow recovery */
gst_adapter_clear (dec->adapter);
FLAC__stream_decoder_flush (dec->decoder);
gst_flac_dec_handle_decoder_error (dec, TRUE);
}
} else {
GST_DEBUG_OBJECT (dec, "don't have all headers yet");
}
@ -2154,6 +2186,7 @@ gst_flac_dec_change_state (GstElement * element, GstStateChange transition)
flacdec->width = 0;
flacdec->sample_rate = 0;
gst_segment_init (&flacdec->segment, GST_FORMAT_DEFAULT);
flacdec->error_count = 0;
break;
default:
break;

2
ext/flac/gstflacdec.h
View file

@ -88,6 +88,8 @@ struct _GstFlacDec {
guint16 max_blocksize;
gint64 cur_granulepos; /* only used in framed mode (flac-in-ogg) */
gint error_count;
};
struct _GstFlacDecClass {