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matroska: refactor code common to matroskademux and matroskaparse

Browse source 
Move the following functions to matroska-read-common.[ch] from
matroska-demux.c and matroska-parse.c:
    - gst_matroska_{demux,parse}_peek_id_length_pull
    - gst_matroska_{demux,parse}_peek_id_length_push

https://bugzilla.gnome.org/show_bug.cgi?id=650877
This commit is contained in:
Debarshi Ray 2011-05-23 18:06:44 +03:00 committed by Sebastian Dröge
parent f3820b61a1
commit 2589f1cd2d
4 changed files with 53 additions and 65 deletions
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49
gst/matroska/matroska-demux.c
View file

@ -461,16 +461,6 @@ gst_matroska_demux_reset (GstElement * element)
}
}
static GstFlowReturn
gst_matroska_demux_peek_id_length_pull (GstMatroskaDemux * demux, guint32 * _id,
guint64 * _length, guint * _needed)
{
return gst_ebml_peek_id_length (_id, _length, _needed,
(GstPeekData) gst_matroska_read_common_peek_pull,
(gpointer) (&demux->common), GST_ELEMENT_CAST (demux),
demux->common.offset);
}
static gint64
gst_matroska_demux_get_length (GstMatroskaDemux * demux)
{
@ -1865,8 +1855,8 @@ gst_matroska_demux_search_cluster (GstMatroskaDemux * demux, gint64 * pos)
GST_DEBUG_OBJECT (demux,
"cluster reported at offset %" G_GINT64_FORMAT, *cpos);
demux->common.offset = *cpos;
ret =
gst_matroska_demux_peek_id_length_pull (demux, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&demux->common,
GST_ELEMENT_CAST (demux), &id, &length, &needed);
if (ret == GST_FLOW_OK && id == GST_MATROSKA_ID_CLUSTER) {
newpos = *cpos;
goto exit;
@ -1905,8 +1895,8 @@ gst_matroska_demux_search_cluster (GstMatroskaDemux * demux, gint64 * pos)
break;
}
demux->common.offset = newpos;
ret =
gst_matroska_demux_peek_id_length_pull (demux, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&demux->common,
GST_ELEMENT_CAST (demux), &id, &length, &needed);
if (ret != GST_FLOW_OK)
goto resume;
g_assert (id == GST_MATROSKA_ID_CLUSTER);
@ -1919,8 +1909,8 @@ gst_matroska_demux_search_cluster (GstMatroskaDemux * demux, gint64 * pos)
}
/* skip cluster */
demux->common.offset += length + needed;
ret =
gst_matroska_demux_peek_id_length_pull (demux, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&demux->common,
GST_ELEMENT_CAST (demux), &id, &length, &needed);
if (ret != GST_FLOW_OK)
goto resume;
GST_DEBUG_OBJECT (demux, "next element is %scluster",
@ -2035,7 +2025,8 @@ retry:
guint64 cluster_size = 0;
/* peek and parse some elements */
ret = gst_matroska_demux_peek_id_length_pull (demux, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&demux->common,
GST_ELEMENT_CAST (demux), &id, &length, &needed);
if (ret != GST_FLOW_OK)
goto error;
GST_LOG_OBJECT (demux, "Offset %" G_GUINT64_FORMAT ", Element id 0x%x, "
@ -4667,8 +4658,9 @@ gst_matroska_demux_parse_contents_seekentry (GstMatroskaDemux * demux,
demux->common.offset = seek_pos + demux->common.ebml_segment_start;
/* check ID */
if ((ret = gst_matroska_demux_peek_id_length_pull (demux, &id, &length,
&needed)) != GST_FLOW_OK)
if ((ret = gst_matroska_read_common_peek_id_length_pull (&demux->common,
GST_ELEMENT_CAST (demux), &id, &length, &needed)) !=
GST_FLOW_OK)
goto finish;
if (id != seek_id) {
@ -4924,7 +4916,8 @@ gst_matroska_demux_find_tracks (GstMatroskaDemux * demux)
/* Search Tracks element */
while (TRUE) {
ret = gst_matroska_demux_peek_id_length_pull (demux, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&demux->common,
GST_ELEMENT_CAST (demux), &id, &length, &needed);
if (ret != GST_FLOW_OK)
break;
@ -5259,7 +5252,8 @@ gst_matroska_demux_loop (GstPad * pad)
}
}
ret = gst_matroska_demux_peek_id_length_pull (demux, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&demux->common,
GST_ELEMENT_CAST (demux), &id, &length, &needed);
if (ret == GST_FLOW_UNEXPECTED)
goto eos;
if (ret != GST_FLOW_OK) {
@ -5399,16 +5393,6 @@ perform_seek_to_offset (GstMatroskaDemux * demux, guint64 offset)
return res;
}
static GstFlowReturn
gst_matroska_demux_peek_id_length_push (GstMatroskaDemux * demux, guint32 * _id,
guint64 * _length, guint * _needed)
{
return gst_ebml_peek_id_length (_id, _length, _needed,
(GstPeekData) gst_matroska_read_common_peek_adapter,
(gpointer) (&demux->common), GST_ELEMENT_CAST (demux),
demux->common.offset);
}
static GstFlowReturn
gst_matroska_demux_chain (GstPad * pad, GstBuffer * buffer)
{
@ -5433,7 +5417,8 @@ gst_matroska_demux_chain (GstPad * pad, GstBuffer * buffer)
next:
available = gst_adapter_available (demux->common.adapter);
ret = gst_matroska_demux_peek_id_length_push (demux, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_push (&demux->common,
GST_ELEMENT_CAST (demux), &id, &length, &needed);
if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED))
return ret;

37
gst/matroska/matroska-parse.c
View file

@ -384,16 +384,6 @@ gst_matroska_parse_reset (GstElement * element)
}
}
static GstFlowReturn
gst_matroska_parse_peek_id_length_pull (GstMatroskaParse * parse, guint32 * _id,
guint64 * _length, guint * _needed)
{
return gst_ebml_peek_id_length (_id, _length, _needed,
(GstPeekData) gst_matroska_read_common_peek_pull,
(gpointer) (&parse->common), GST_ELEMENT_CAST (parse),
parse->common.offset);
}
static gint64
gst_matroska_parse_get_length (GstMatroskaParse * parse)
{
@ -1549,8 +1539,8 @@ gst_matroska_parse_search_cluster (GstMatroskaParse * parse, gint64 * pos)
break;
}
parse->common.offset = newpos;
ret =
gst_matroska_parse_peek_id_length_pull (parse, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&parse->common,
GST_ELEMENT_CAST (parse), &id, &length, &needed);
if (ret != GST_FLOW_OK)
goto resume;
g_assert (id == GST_MATROSKA_ID_CLUSTER);
@ -1563,8 +1553,8 @@ gst_matroska_parse_search_cluster (GstMatroskaParse * parse, gint64 * pos)
}
/* skip cluster */
parse->common.offset += length + needed;
ret =
gst_matroska_parse_peek_id_length_pull (parse, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&parse->common,
GST_ELEMENT_CAST (parse), &id, &length, &needed);
if (ret != GST_FLOW_OK)
goto resume;
GST_DEBUG_OBJECT (parse, "next element is %scluster",
@ -3463,7 +3453,8 @@ gst_matroska_parse_find_tracks (GstMatroskaParse * parse)
/* Search Tracks element */
while (TRUE) {
ret = gst_matroska_parse_peek_id_length_pull (parse, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&parse->common,
GST_ELEMENT_CAST (parse), &id, &length, &needed);
if (ret != GST_FLOW_OK)
break;
@ -3885,7 +3876,8 @@ gst_matroska_parse_loop (GstPad * pad)
}
}
ret = gst_matroska_parse_peek_id_length_pull (parse, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_pull (&parse->common,
GST_ELEMENT_CAST (parse), &id, &length, &needed);
if (ret == GST_FLOW_UNEXPECTED)
goto eos;
if (ret != GST_FLOW_OK) {
@ -4024,16 +4016,6 @@ perform_seek_to_offset (GstMatroskaParse * parse, guint64 offset)
return res;
}
static GstFlowReturn
gst_matroska_parse_peek_id_length_push (GstMatroskaParse * parse, guint32 * _id,
guint64 * _length, guint * _needed)
{
return gst_ebml_peek_id_length (_id, _length, _needed,
(GstPeekData) gst_matroska_read_common_peek_adapter,
(gpointer) (&parse->common), GST_ELEMENT_CAST (parse),
parse->common.offset);
}
static GstFlowReturn
gst_matroska_parse_chain (GstPad * pad, GstBuffer * buffer)
{
@ -4058,7 +4040,8 @@ gst_matroska_parse_chain (GstPad * pad, GstBuffer * buffer)
next:
available = gst_adapter_available (parse->common.adapter);
ret = gst_matroska_parse_peek_id_length_push (parse, &id, &length, &needed);
ret = gst_matroska_read_common_peek_id_length_push (&parse->common,
GST_ELEMENT_CAST (parse), &id, &length, &needed);
if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED))
return ret;

22
gst/matroska/matroska-read-common.c
View file

@ -624,7 +624,7 @@ gst_matroska_read_common_parse_index (GstMatroskaReadCommon * common,
return ret;
}
const guint8 *
static const guint8 *
gst_matroska_read_common_peek_adapter (GstMatroskaReadCommon * common, guint
peek)
{
@ -716,7 +716,7 @@ gst_matroska_read_common_peek_bytes (GstMatroskaReadCommon * common, guint64
return GST_FLOW_OK;
}
const guint8 *
static const guint8 *
gst_matroska_read_common_peek_pull (GstMatroskaReadCommon * common, guint peek)
{
guint8 *data = NULL;
@ -726,6 +726,24 @@ gst_matroska_read_common_peek_pull (GstMatroskaReadCommon * common, guint peek)
return data;
}
GstFlowReturn
gst_matroska_read_common_peek_id_length_pull (GstMatroskaReadCommon * common,
GstElement * el, guint32 * _id, guint64 * _length, guint * _needed)
{
return gst_ebml_peek_id_length (_id, _length, _needed,
(GstPeekData) gst_matroska_read_common_peek_pull, (gpointer) common, el,
common->offset);
}
GstFlowReturn
gst_matroska_read_common_peek_id_length_push (GstMatroskaReadCommon * common,
GstElement * el, guint32 * _id, guint64 * _length, guint * _needed)
{
return gst_ebml_peek_id_length (_id, _length, _needed,
(GstPeekData) gst_matroska_read_common_peek_adapter, (gpointer) common,
el, common->offset);
}
GstFlowReturn
gst_matroska_read_common_read_track_encoding (GstMatroskaReadCommon * common,
GstEbmlRead * ebml, GstMatroskaTrackContext * context)

10
gst/matroska/matroska-read-common.h
View file

@ -82,12 +82,14 @@ GstFlowReturn gst_matroska_read_common_parse_index (GstMatroskaReadCommon *
common, GstEbmlRead * ebml);
GstFlowReturn gst_matroska_read_common_parse_skip (GstMatroskaReadCommon *
common, GstEbmlRead * ebml, const gchar * parent_name, guint id);
const guint8 * gst_matroska_read_common_peek_adapter (GstMatroskaReadCommon *
common, guint peek);
GstFlowReturn gst_matroska_read_common_peek_bytes (GstMatroskaReadCommon *
common, guint64 offset, guint size, GstBuffer ** p_buf, guint8 ** bytes);
const guint8 * gst_matroska_read_common_peek_pull (GstMatroskaReadCommon *
common, guint peek);
GstFlowReturn gst_matroska_read_common_peek_id_length_pull (GstMatroskaReadCommon *
common, GstElement * el, guint32 * _id, guint64 * _length, guint *
_needed);
GstFlowReturn gst_matroska_read_common_peek_id_length_push (GstMatroskaReadCommon *
common, GstElement * el, guint32 * _id, guint64 * _length, guint *
_needed);
gint gst_matroska_read_common_stream_from_num (GstMatroskaReadCommon * common,
guint track_num);
GstFlowReturn gst_matroska_read_common_read_track_encoding (