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wavparse: simplify and correct header scanning

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The wav spec tells that 'fmt' (and 'bext' if present) must come before 'data'.
There is no requirement for 'fmt' to be first. We already had a list of chunks
to skip, but it is easier to just skip any chunk while seeking for 'fmt'.

This fixes reading files generated by ProTools.
This commit is contained in:
Stefan Sauer 2016-05-03 22:59:27 -07:00
parent 1face2a662
commit 36597cf201
1 changed files with 8 additions and 35 deletions
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43
gst/wavparse/gstwavparse.c
View file

@ -59,15 +59,6 @@
GST_DEBUG_CATEGORY_STATIC (wavparse_debug);
#define GST_CAT_DEFAULT (wavparse_debug)
#define GST_RIFF_TAG_Fake GST_MAKE_FOURCC ('F','a','k','e')
#define GST_BWF_TAG_iXML GST_MAKE_FOURCC ('i','X','M','L')
#define GST_BWF_TAG_qlty GST_MAKE_FOURCC ('q','l','t','y')
#define GST_BWF_TAG_mext GST_MAKE_FOURCC ('m','e','x','t')
#define GST_BWF_TAG_levl GST_MAKE_FOURCC ('l','e','v','l')
#define GST_BWF_TAG_link GST_MAKE_FOURCC ('l','i','n','k')
#define GST_BWF_TAG_axml GST_MAKE_FOURCC ('a','x','m','l')
/* Data size chunk of RF64,
* see http://tech.ebu.ch/docs/tech/tech3306-2009.pdf */
#define GST_RS64_TAG_DS64 GST_MAKE_FOURCC ('d','s','6','4')
@ -1091,11 +1082,10 @@ gst_wavparse_stream_headers (GstWavParse * wav)
gint64 upstream_size = 0;
GstStructure *s;
/* search for "_fmt" chunk, which should be first */
/* search for "_fmt" chunk, which must be before "data" */
while (!wav->got_fmt) {
GstBuffer *extra;
/* The header starts with a 'fmt ' tag */
if (wav->streaming) {
if (!gst_wavparse_peek_chunk (wav, &tag, &size))
return res;
@ -1117,21 +1107,6 @@ gst_wavparse_stream_headers (GstWavParse * wav)
return res;
}
if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ ||
tag == GST_RIFF_TAG_bext || tag == GST_RIFF_TAG_BEXT ||
tag == GST_RIFF_TAG_LIST || tag == GST_RIFF_TAG_ID32 ||
tag == GST_RIFF_TAG_id3 || tag == GST_RIFF_TAG_IDVX ||
tag == GST_BWF_TAG_iXML || tag == GST_BWF_TAG_qlty ||
tag == GST_BWF_TAG_mext || tag == GST_BWF_TAG_levl ||
tag == GST_BWF_TAG_link || tag == GST_BWF_TAG_axml ||
tag == GST_RIFF_TAG_Fake) {
GST_DEBUG_OBJECT (wav, "skipping %" GST_FOURCC_FORMAT " chunk",
GST_FOURCC_ARGS (tag));
gst_buffer_unref (buf);
buf = NULL;
continue;
}
if (tag == GST_RS64_TAG_DS64) {
if (!parse_ds64 (wav, buf))
goto fail;
@ -1139,8 +1114,13 @@ gst_wavparse_stream_headers (GstWavParse * wav)
continue;
}
if (tag != GST_RIFF_TAG_fmt)
goto invalid_wav;
if (tag != GST_RIFF_TAG_fmt) {
GST_DEBUG_OBJECT (wav, "skipping %" GST_FOURCC_FORMAT " chunk",
GST_FOURCC_ARGS (tag));
gst_buffer_unref (buf);
buf = NULL;
continue;
}
if (!(gst_riff_parse_strf_auds (GST_ELEMENT_CAST (wav), buf, &header,
&extra)))
@ -1718,13 +1698,6 @@ fail:
res = GST_FLOW_ERROR;
goto exit;
}
invalid_wav:
{
GST_ELEMENT_ERROR (wav, STREAM, TYPE_NOT_FOUND, (NULL),
("Invalid WAV header (no fmt at start): %"
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
goto fail;
}
parse_header_error:
{
GST_ELEMENT_ERROR (wav, STREAM, DEMUX, (NULL),