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mpegts: Add init functions for descriptor/section

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This commit is contained in:
Jesper Larsen 2013-10-28 14:39:49 +01:00
parent 4630dfda05
commit b1c5143b79
4 changed files with 77 additions and 11 deletions
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5
gst-libs/gst/mpegts/gstmpegts-private.h
View file

@ -33,6 +33,11 @@ G_GNUC_INTERNAL void __initialize_descriptors (void);
G_GNUC_INTERNAL guint32 _calc_crc32 (const guint8 *data, guint datalen);
G_GNUC_INTERNAL gchar *get_encoding_and_convert (const gchar *text, guint length);
G_GNUC_INTERNAL guint8 *dvb_text_from_utf8 (const gchar * text, gsize *out_size);
G_GNUC_INTERNAL void _free_descriptor (GstMpegTsDescriptor *descriptor);
G_GNUC_INTERNAL GstMpegTsDescriptor *_new_descriptor (guint8 tag, guint8 length);
G_GNUC_INTERNAL GstMpegTsDescriptor *_new_descriptor_with_extension (guint8 tag,
guint8 tag_extension, guint8 length);
G_GNUC_INTERNAL GstMpegTsSection *_gst_mpegts_section_init (guint16 pid, guint8 table_id);
typedef gpointer (*GstMpegTsParseFunc) (GstMpegTsSection *section);
G_GNUC_INTERNAL gpointer __common_desc_checks (GstMpegTsSection *section,

47
gst-libs/gst/mpegts/gstmpegtsdescriptor.c
View file

@ -627,6 +627,51 @@ failed:
}
}
GstMpegTsDescriptor *
_new_descriptor (guint8 tag, guint8 length)
{
GstMpegTsDescriptor *descriptor;
guint8 *data;
descriptor = g_slice_new (GstMpegTsDescriptor);
descriptor->tag = tag;
descriptor->tag_extension = 0;
descriptor->length = length;
descriptor->data = g_malloc (length + 2);
data = descriptor->data;
*data++ = descriptor->tag;
*data = descriptor->length;
return descriptor;
}
GstMpegTsDescriptor *
_new_descriptor_with_extension (guint8 tag, guint8 tag_extension, guint8 length)
{
GstMpegTsDescriptor *descriptor;
guint8 *data;
descriptor = g_slice_new (GstMpegTsDescriptor);
descriptor->tag = tag;
descriptor->tag_extension = tag_extension;
descriptor->length = length;
descriptor->data = g_malloc (length + 3);
data = descriptor->data;
*data++ = descriptor->tag;
*data++ = descriptor->tag_extension;
*data = descriptor->length;
return descriptor;
}
static GstMpegTsDescriptor *
_copy_descriptor (GstMpegTsDescriptor * desc)
{
@ -638,7 +683,7 @@ _copy_descriptor (GstMpegTsDescriptor * desc)
return copy;
}
static void
void
_free_descriptor (GstMpegTsDescriptor * desc)
{
g_free ((gpointer) desc->data);

2
gst-libs/gst/mpegts/gstmpegtsdescriptor.h
View file

@ -254,7 +254,7 @@ struct _GstMpegTsDescriptor
guint8 tag;
guint8 tag_extension;
guint8 length;
const guint8 *data;
guint8 *data;
};
GPtrArray *gst_mpegts_parse_descriptors (guint8 * buffer, gsize buf_len);

34
gst-libs/gst/mpegts/gstmpegtssection.c
View file

@ -715,6 +715,24 @@ _identify_section (guint16 pid, guint8 table_id)
}
GstMpegTsSection *
_gst_mpegts_section_init (guint16 pid, guint8 table_id)
{
GstMpegTsSection *section;
section = g_slice_new0 (GstMpegTsSection);
gst_mini_object_init (GST_MINI_OBJECT_CAST (section), 0, MPEG_TYPE_TS_SECTION,
(GstMiniObjectCopyFunction) _gst_mpegts_section_copy, NULL,
(GstMiniObjectFreeFunction) _gst_mpegts_section_free);
section->pid = pid;
section->table_id = table_id;
section->current_next_indicator = TRUE;
section->section_type = _identify_section (pid, table_id);
return section;
}
/**
* gst_mpegts_section_new:
* @pid: the PID to which this section belongs
@ -739,6 +757,7 @@ gst_mpegts_section_new (guint16 pid, guint8 * data, gsize data_size)
{
GstMpegTsSection *res = NULL;
guint8 tmp;
guint8 table_id;
guint16 section_length;
/* Check for length */
@ -746,15 +765,14 @@ gst_mpegts_section_new (guint16 pid, guint8 * data, gsize data_size)
if (G_UNLIKELY (data_size < section_length + 3))
goto short_packet;
res = g_slice_new0 (GstMpegTsSection);
gst_mini_object_init (GST_MINI_OBJECT_CAST (res), 0, MPEG_TYPE_TS_SECTION,
(GstMiniObjectCopyFunction) _gst_mpegts_section_copy, NULL,
(GstMiniObjectFreeFunction) _gst_mpegts_section_free);
/* Table id is in first byte */
table_id = *data;
res = _gst_mpegts_section_init (pid, table_id);
res->pid = pid;
res->data = data;
/* table_id : 8 bit */
res->table_id = *data++;
/* table_id (already parsed) : 8 bit */
data++;
/* section_syntax_indicator : 1 bit
* other_fields (reserved) : 3 bit*/
res->short_section = (*data & 0x80) == 0x00;
@ -780,8 +798,6 @@ gst_mpegts_section_new (guint16 pid, guint8 * data, gsize data_size)
res->last_section_number = *data;
}
res->section_type = _identify_section (res->pid, res->table_id);
return res;
short_packet: