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flacparse: parse seektable

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Fixes #631389 (partially).
This commit is contained in:
Mark Nauwelaerts 2010-11-16 12:11:53 +01:00
parent 551f9707fa
commit 36cbbd94c6
2 changed files with 60 additions and 1 deletions
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60
gst/audioparsers/gstflacparse.c
View file

@ -882,6 +882,60 @@ error:
return FALSE;
}
static gboolean
gst_flac_parse_handle_seektable (GstFlacParse * flacparse, GstBuffer * buffer)
{
GST_DEBUG_OBJECT (flacparse, "storing seektable");
/* only store for now;
* offset of the first frame is needed to get real info */
flacparse->seektable = gst_buffer_ref (buffer);
return TRUE;
}
static void
gst_flac_parse_process_seektable (GstFlacParse * flacparse, gint64 boffset)
{
GstByteReader br;
gint64 offset, samples;
GST_DEBUG_OBJECT (flacparse,
"parsing seektable; base offset %" G_GINT64_FORMAT, boffset);
if (boffset <= 0)
goto done;
gst_byte_reader_init_from_buffer (&br, flacparse->seektable);
/* skip header */
if (!gst_byte_reader_skip (&br, 4))
goto done;
/* seekpoints */
while (gst_byte_reader_get_remaining (&br)) {
if (!gst_byte_reader_get_int64_be (&br, &samples))
break;
if (!gst_byte_reader_get_int64_be (&br, &offset))
break;
if (!gst_byte_reader_skip (&br, 2))
break;
GST_LOG_OBJECT (flacparse, "samples %" G_GINT64_FORMAT " -> offset %"
G_GINT64_FORMAT, samples, offset);
/* sanity check */
if (G_LIKELY (offset > 0 && samples > 0)) {
gst_base_parse_add_index_entry (GST_BASE_PARSE (flacparse),
boffset + offset, gst_util_uint64_scale (samples, GST_SECOND,
flacparse->samplerate), TRUE, FALSE);
}
}
done:
gst_buffer_unref (flacparse->seektable);
flacparse->seektable = NULL;
}
static void
_value_array_append_buffer (GValue * array_val, GstBuffer * buf)
{
@ -1152,7 +1206,8 @@ gst_flac_parse_parse_frame (GstBaseParse * parse, GstBuffer * buffer)
return GST_FLOW_ERROR;
break;
case 3: /* SEEKTABLE */
/* TODO: handle seektables */
if (!gst_flac_parse_handle_seektable (flacparse, buffer))
return GST_FLOW_ERROR;
break;
case 4: /* VORBIS_COMMENT */
if (!gst_flac_parse_handle_vorbiscomment (flacparse, buffer))
@ -1209,6 +1264,9 @@ gst_flac_parse_parse_frame (GstBaseParse * parse, GstBuffer * buffer)
return GST_FLOW_ERROR;
}
if (flacparse->seektable)
gst_flac_parse_process_seektable (flacparse, GST_BUFFER_OFFSET (buffer));
if (flacparse->state == GST_FLAC_PARSE_STATE_GENERATE_HEADERS) {
if (flacparse->blocking_strategy == 1) {
GST_WARNING_OBJECT (flacparse,

1
gst/audioparsers/gstflacparse.h
View file

@ -78,6 +78,7 @@ struct _GstFlacParse {
GstTagList *tags;
GList *headers;
GstBuffer *seektable;
};
struct _GstFlacParseClass {