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- implement eventmasks/format/querytype functions

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Original commit message from CVS:
- implement eventmasks/format/querytype functions
- added convert functions
- added seek on bytes
This commit is contained in:
Wim Taymans 2002-07-24 21:40:16 +00:00
parent 54dd68831c
commit 4ff636bad3
1 changed files with 136 additions and 6 deletions
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140
ext/vorbis/vorbisfile.c
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@ -108,8 +108,16 @@ static void gst_vorbisfile_init (VorbisFile *vorbisfile);
static GstElementStateReturn
gst_vorbisfile_change_state (GstElement *element);
static const GstFormat* gst_vorbisfile_get_formats (GstPad *pad);
static gboolean gst_vorbisfile_src_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
GstFormat *dest_format, gint64 *dest_value);
static const GstPadQueryType*
gst_vorbisfile_get_query_types (GstPad *pad);
static gboolean gst_vorbisfile_src_query (GstPad *pad, GstPadQueryType type,
GstFormat *format, gint64 *value);
static const GstEventMask*
gst_vorbisfile_get_event_masks (GstPad *pad);
static gboolean gst_vorbisfile_src_event (GstPad *pad, GstEvent *event);
static void gst_vorbisfile_get_property (GObject *object, guint prop_id,
@ -197,9 +205,12 @@ gst_vorbisfile_init (VorbisFile * vorbisfile)
gst_element_set_loop_function (GST_ELEMENT (vorbisfile), gst_vorbisfile_loop);
vorbisfile->srcpad = gst_pad_new_from_template (dec_src_template, "src");
gst_element_add_pad (GST_ELEMENT (vorbisfile), vorbisfile->srcpad);
gst_pad_set_formats_function (vorbisfile->srcpad, gst_vorbisfile_get_formats);
gst_pad_set_query_type_function (vorbisfile->srcpad, gst_vorbisfile_get_query_types);
gst_pad_set_query_function (vorbisfile->srcpad, gst_vorbisfile_src_query);
gst_pad_set_event_mask_function (vorbisfile->srcpad, gst_vorbisfile_get_event_masks);
gst_pad_set_event_function (vorbisfile->srcpad, gst_vorbisfile_src_event);
gst_pad_set_convert_function (vorbisfile->srcpad, NULL);
gst_pad_set_convert_function (vorbisfile->srcpad, gst_vorbisfile_src_convert);
vorbisfile->convsize = 4096;
vorbisfile->total_out = 0;
@ -261,8 +272,6 @@ gst_vorbisfile_read (void *ptr, size_t size, size_t nmemb, void *datasource)
}
}
//gst_util_dump_mem (data, got_bytes);
memcpy (ptr, data, got_bytes);
gst_bytestream_flush_fast (vorbisfile->bs, got_bytes);
@ -475,6 +484,101 @@ gst_vorbisfile_loop (GstElement *element)
}
}
static const GstFormat*
gst_vorbisfile_get_formats (GstPad *pad)
{
static const GstFormat formats[] = {
GST_FORMAT_TIME,
GST_FORMAT_BYTES,
GST_FORMAT_UNITS,
0
};
return formats;
}
static gboolean
gst_vorbisfile_src_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
GstFormat *dest_format, gint64 *dest_value)
{
gboolean res = TRUE;
guint scale = 1;
gint bytes_per_sample;
VorbisFile *vorbisfile;
vorbis_info *vi;
vorbisfile = GST_VORBISFILE (gst_pad_get_parent (pad));
vi = ov_info (&vorbisfile->vf, -1);
bytes_per_sample = vi->channels * 2;
switch (src_format) {
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_UNITS:
*dest_value = src_value / (vi->channels * 2);
break;
case GST_FORMAT_DEFAULT:
*dest_format = GST_FORMAT_TIME;
case GST_FORMAT_TIME:
{
gint byterate = bytes_per_sample * vi->rate;
if (byterate == 0)
return FALSE;
*dest_value = src_value * GST_SECOND / byterate;
break;
}
default:
res = FALSE;
}
case GST_FORMAT_UNITS:
switch (*dest_format) {
case GST_FORMAT_BYTES:
*dest_value = src_value * bytes_per_sample;
break;
case GST_FORMAT_DEFAULT:
*dest_format = GST_FORMAT_TIME;
case GST_FORMAT_TIME:
if (vi->rate == 0)
return FALSE;
*dest_value = src_value * GST_SECOND / vi->rate;
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_DEFAULT:
*dest_format = GST_FORMAT_BYTES;
case GST_FORMAT_BYTES:
scale = bytes_per_sample;
case GST_FORMAT_UNITS:
*dest_value = src_value * scale * vi->rate / GST_SECOND;
break;
default:
res = FALSE;
}
break;
default:
res = FALSE;
break;
}
return res;
}
static const GstPadQueryType*
gst_vorbisfile_get_query_types (GstPad *pad)
{
static const GstPadQueryType types[] = {
GST_PAD_QUERY_TOTAL,
GST_PAD_QUERY_POSITION,
0
};
return types;
}
static gboolean
gst_vorbisfile_src_query (GstPad *pad, GstPadQueryType type,
GstFormat *format, gint64 *value)
@ -554,6 +658,16 @@ gst_vorbisfile_src_query (GstPad *pad, GstPadQueryType type,
return res;
}
static const GstEventMask*
gst_vorbisfile_get_event_masks (GstPad *pad)
{
static const GstEventMask masks[] = {
{ GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_ACCURATE },
{ 0, }
};
return masks;
}
static gboolean
gst_vorbisfile_src_event (GstPad *pad, GstEvent *event)
{
@ -564,21 +678,35 @@ gst_vorbisfile_src_event (GstPad *pad, GstEvent *event)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
gint64 offset;
vorbis_info *vi;
if (!vorbisfile->vf.seekable) {
gst_event_unref (event);
return FALSE;
}
offset = GST_EVENT_SEEK_OFFSET (event);
switch (GST_EVENT_SEEK_FORMAT (event)) {
case GST_FORMAT_TIME:
vorbisfile->seek_pending = TRUE;
vorbisfile->seek_value = GST_EVENT_SEEK_OFFSET (event);
vorbisfile->seek_value = offset;
vorbisfile->seek_format = GST_FORMAT_TIME;
vorbisfile->seek_accurate = GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_ACCURATE;
break;
case GST_FORMAT_BYTES:
vi = ov_info (&vorbisfile->vf, -1);
if (vi->channels * 2 == 0) {
res = FALSE;
goto done;
}
offset /= vi->channels * 2;
/* fallthrough */
case GST_FORMAT_UNITS:
vorbisfile->seek_pending = TRUE;
vorbisfile->seek_value = GST_EVENT_SEEK_OFFSET (event);
vorbisfile->seek_value = offset;
vorbisfile->seek_format = GST_FORMAT_UNITS;
vorbisfile->seek_accurate = GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_ACCURATE;
break;
@ -587,11 +715,13 @@ gst_vorbisfile_src_event (GstPad *pad, GstEvent *event)
break;
}
break;
}
default:
res = FALSE;
break;
}
done:
gst_event_unref (event);
return res;
}