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matroskademux: use bytereader based GstEbmlRead as a helper

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... rather than basing on it by inheritance.
Also use more common code for push and pull mode.

Fixes #619198.
Fixes #611117.
This commit is contained in:
Mark Nauwelaerts 2010-05-18 14:44:15 +02:00
parent 973c8ddfdf
commit 085e333283
4 changed files with 1160 additions and 1857 deletions
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870
gst/matroska/ebml-read.c
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File diff suppressed because it is too large Load diff

97
gst/matroska/ebml-read.h
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@ -23,6 +23,7 @@
#define __GST_EBML_READ_H__
#include <gst/gst.h>
#include <gst/base/gstbytereader.h>
G_BEGIN_DECLS
@ -39,47 +40,42 @@ G_BEGIN_DECLS
#define GST_EBML_READ_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_EBML_READ, GstEbmlReadClass))
/* custom flow return code */
#define GST_FLOW_END GST_FLOW_CUSTOM_SUCCESS
GST_DEBUG_CATEGORY_EXTERN (ebmlread_debug);
typedef struct _GstEbmlLevel {
guint64 start;
guint64 length;
} GstEbmlLevel;
/* custom flow return code */
#define GST_FLOW_PARSE GST_FLOW_CUSTOM_ERROR
typedef struct _GstEbmlMaster {
guint64 offset;
GstByteReader br;
} GstEbmlMaster;
typedef struct _GstEbmlRead {
GstElement parent;
GstElement *el;
GstBuffer *cached_buffer;
gboolean push_cache;
GstPad *sinkpad;
GstBuffer *buf;
guint64 offset;
GList *level;
GArray *readers;
} GstEbmlRead;
typedef struct _GstEbmlReadClass {
GstElementClass parent;
} GstEbmlReadClass;
typedef const guint8 * (*GstPeekData) (gpointer * context, guint peek);
GType gst_ebml_read_get_type (void);
/* returns UNEXPECTED if not enough data */
GstFlowReturn gst_ebml_peek_id_length (guint32 * _id, guint64 * _length,
guint * _needed,
GstPeekData peek, gpointer * ctx,
GstElement * el, guint64 offset);
void gst_ebml_level_free (GstEbmlLevel *level);
void gst_ebml_read_reset_cache (GstEbmlRead * ebml,
GstBuffer * buffer,
void gst_ebml_read_init (GstEbmlRead * ebml,
GstElement * el, GstBuffer * buf,
guint64 offset);
GstFlowReturn gst_ebml_peek_id (GstEbmlRead *ebml,
guint *level_up,
guint32 *id);
void gst_ebml_read_clear (GstEbmlRead * ebml);
GstFlowReturn gst_ebml_read_seek (GstEbmlRead *ebml,
guint64 offset);
gint64 gst_ebml_read_get_length (GstEbmlRead *ebml);
GstFlowReturn gst_ebml_peek_id (GstEbmlRead * ebml, guint32 * id);
/* return _PARSE if not enough data to read what is needed, _ERROR or _OK */
GstFlowReturn gst_ebml_read_skip (GstEbmlRead *ebml);
GstFlowReturn gst_ebml_read_buffer (GstEbmlRead *ebml,
@ -113,6 +109,8 @@ GstFlowReturn gst_ebml_read_date (GstEbmlRead *ebml,
GstFlowReturn gst_ebml_read_master (GstEbmlRead *ebml,
guint32 *id);
GstFlowReturn gst_ebml_read_pop_master (GstEbmlRead *ebml);
GstFlowReturn gst_ebml_read_binary (GstEbmlRead *ebml,
guint32 *id,
guint8 **binary,
@ -122,6 +120,51 @@ GstFlowReturn gst_ebml_read_header (GstEbmlRead *read,
gchar **doctype,
guint *version);
/* Returns current (absolute) position of Ebml parser,
* i.e. taking into account offset provided at init */
static inline guint64
gst_ebml_read_get_pos (GstEbmlRead * ebml)
{
GstEbmlMaster *m;
g_return_val_if_fail (ebml->readers, 0);
g_return_val_if_fail (ebml->readers->len, 0);
m = &(g_array_index (ebml->readers, GstEbmlMaster, ebml->readers->len - 1));
return m->offset + gst_byte_reader_get_pos (&m->br);
}
/* Returns starting offset of Ebml parser */
static inline guint64
gst_ebml_read_get_offset (GstEbmlRead * ebml)
{
return ebml->offset;
}
static inline GstByteReader *
gst_ebml_read_br (GstEbmlRead * ebml)
{
g_return_val_if_fail (ebml->readers, NULL);
g_return_val_if_fail (ebml->readers->len, NULL);
return &(g_array_index (ebml->readers,
GstEbmlMaster, ebml->readers->len - 1).br);
}
static inline gboolean
gst_ebml_read_has_remaining (GstEbmlRead * ebml, guint64 bytes_needed,
gboolean auto_pop)
{
gboolean res;
res = (gst_byte_reader_get_remaining (gst_ebml_read_br (ebml)) >= bytes_needed);
if (G_LIKELY (!res && auto_pop)) {
gst_ebml_read_pop_master (ebml);
}
return G_LIKELY (res);
}
G_END_DECLS
#endif /* __GST_EBML_READ_H__ */

2034
gst/matroska/matroska-demux.c
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16
gst/matroska/matroska-demux.h
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@ -43,13 +43,14 @@ G_BEGIN_DECLS
typedef enum {
GST_MATROSKA_DEMUX_STATE_START,
GST_MATROSKA_DEMUX_STATE_SEGMENT,
GST_MATROSKA_DEMUX_STATE_HEADER,
GST_MATROSKA_DEMUX_STATE_DATA,
GST_MATROSKA_DEMUX_STATE_SEEK
} GstMatroskaDemuxState;
typedef struct _GstMatroskaDemux {
GstEbmlRead parent;
GstElement parent;
/* < private > */
@ -75,6 +76,7 @@ typedef struct _GstMatroskaDemux {
GstMatroskaDemuxState state;
guint level_up;
guint64 seek_block;
gboolean seek_first;
/* did we parse cues/tracks/segmentinfo already? */
gboolean index_parsed;
@ -82,6 +84,7 @@ typedef struct _GstMatroskaDemux {
gboolean segmentinfo_parsed;
gboolean attachments_parsed;
GList *tags_parsed;
GList *seek_parsed;
/* start-of-segment */
guint64 ebml_segment_start;
@ -101,12 +104,17 @@ typedef struct _GstMatroskaDemux {
GstEvent *new_segment;
GstTagList *global_tags;
/* push based mode usual suspects */
/* pull mode caching */
GstBuffer *cached_buffer;
/* push and pull mode */
guint64 offset;
GstAdapter *adapter;
/* some state saving */
GstClockTime cluster_time;
guint64 cluster_offset;
/* push based mode usual suspects */
GstAdapter *adapter;
/* index stuff */
gboolean seekable;
gboolean building_index;
@ -122,7 +130,7 @@ typedef struct _GstMatroskaDemux {
} GstMatroskaDemux;
typedef struct _GstMatroskaDemuxClass {
GstEbmlReadClass parent;
GstElementClass parent;
} GstMatroskaDemuxClass;
gboolean gst_matroska_demux_plugin_init (GstPlugin *plugin);