mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-30 12:10:37 +00:00
Code Issues 1 Projects Releases Wiki Activity

Cleanups

Browse source 
Original commit message from CVS:
Cleanups
Added some segment seek
This commit is contained in:
Wim Taymans 2002-11-02 13:34:42 +00:00
parent 797feff03e
commit 140d279c66
2 changed files with 84 additions and 50 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

132
ext/dv/gstdvdec.c
View file

@ -135,7 +135,8 @@ GST_PAD_TEMPLATE_FACTORY ( audio_src_temp,
"width", GST_PROPS_INT (16),
"signed", GST_PROPS_BOOLEAN (TRUE),
"channels", GST_PROPS_INT (2),
"endianness", GST_PROPS_INT (G_LITTLE_ENDIAN)
"endianness", GST_PROPS_INT (G_LITTLE_ENDIAN),
"rate", GST_PROPS_INT_RANGE (4000, 48000)
)
)
@ -333,6 +334,7 @@ gst_dvdec_init(GstDVDec *dvdec)
dvdec->clamp_luma = FALSE;
dvdec->clamp_chroma = FALSE;
dvdec->quality = DV_QUALITY_BEST;
dvdec->loop = FALSE;
for (i = 0; i <4; i++) {
dvdec->audio_buffers[i] = (gint16 *)g_malloc (DV_AUDIO_MAX_SAMPLES * sizeof (gint16));
@ -595,36 +597,56 @@ gst_dvdec_handle_src_event (GstPad *pad, GstEvent *event)
dvdec = GST_DVDEC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK_SEGMENT:
{
gint64 position;
GstFormat format;
/* first bring the format to time */
format = GST_FORMAT_TIME;
if (!gst_pad_convert (pad,
GST_EVENT_SEEK_FORMAT (event),
GST_EVENT_SEEK_ENDOFFSET (event),
&format, &position))
{
/* could not convert seek format to byte offset */
res = FALSE;
break;
}
dvdec->end_position = position;
dvdec->loop = GST_EVENT_SEEK_TYPE (event) & GST_SEEK_FLAG_SEGMENT_LOOP;
}
case GST_EVENT_SEEK:
{
gint64 position;
GstFormat format;
gint64 position;
GstFormat format;
/* first bring the format to time */
format = GST_FORMAT_TIME;
if (!gst_pad_convert (pad,
GST_EVENT_SEEK_FORMAT (event),
GST_EVENT_SEEK_OFFSET (event),
&format, &position))
{
/* could not convert seek format to byte offset */
res = FALSE;
break;
}
/* then try to figure out the byteoffset for this time */
format = GST_FORMAT_BYTES;
if (!gst_pad_convert (dvdec->sinkpad, GST_FORMAT_TIME, position,
/* first bring the format to time */
format = GST_FORMAT_TIME;
if (!gst_pad_convert (pad,
GST_EVENT_SEEK_FORMAT (event),
GST_EVENT_SEEK_OFFSET (event),
&format, &position))
{
/* could not convert seek format to byte offset */
res = FALSE;
break;
}
/* then try to figure out the byteoffset for this time */
format = GST_FORMAT_BYTES;
if (!gst_pad_convert (dvdec->sinkpad, GST_FORMAT_TIME, position,
&format, &position))
{
/* could not convert seek format to byte offset */
res = FALSE;
break;
}
/* seek to offset */
if (!gst_bytestream_seek (dvdec->bs, position, GST_SEEK_METHOD_SET)) {
res = FALSE;
}
break;
{
/* could not convert seek format to byte offset */
res = FALSE;
break;
}
/* seek to offset */
if (!gst_bytestream_seek (dvdec->bs, position, GST_SEEK_METHOD_SET)) {
res = FALSE;
}
break;
}
default:
res = FALSE;
@ -634,6 +656,28 @@ gst_dvdec_handle_src_event (GstPad *pad, GstEvent *event)
return res;
}
static void
gst_dvdec_push (GstDVDec *dvdec, GstBuffer *outbuf, GstPad *pad, GstClockTime ts)
{
GST_BUFFER_TIMESTAMP (outbuf) = ts;
if (dvdec->need_discont) {
GstEvent *discont;
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, ts, NULL);
gst_pad_push (pad, GST_BUFFER (discont));
}
gst_pad_push (pad, outbuf);
if (dvdec->next_ts >= dvdec->end_position) {
if (dvdec->loop)
gst_pad_push (pad, GST_BUFFER(gst_event_new (GST_EVENT_SEGMENT_DONE)));
else
gst_pad_push (pad, GST_BUFFER(gst_event_new (GST_EVENT_EOS)));
}
}
static void
gst_dvdec_loop (GstElement *element)
{
@ -674,7 +718,9 @@ gst_dvdec_loop (GstElement *element)
}
/* if we did not negotiate yet, do it now */
if (!GST_PAD_CAPS (dvdec->videosrcpad)) {
if (!GST_PAD_CAPS (dvdec->videosrcpad) &&
GST_PAD_IS_USABLE (dvdec->videosrcpad))
{
GstCaps *allowed;
GstCaps *trylist;
@ -733,6 +779,9 @@ gst_dvdec_loop (GstElement *element)
format = GST_FORMAT_TIME;
gst_pad_query (dvdec->videosrcpad, GST_PAD_QUERY_POSITION, &format, &ts);
/* FIXME this is inaccurate for NTSC */
dvdec->next_ts += GST_SECOND / dvdec->framerate;
if (GST_PAD_IS_CONNECTED (dvdec->audiosrcpad)) {
gint16 *a_ptr;
gint i, j;
@ -768,16 +817,7 @@ gst_dvdec_loop (GstElement *element)
*(a_ptr++) = dvdec->audio_buffers[j][i];
}
}
GST_BUFFER_TIMESTAMP (outbuf) = ts;
if (dvdec->need_discont) {
GstEvent *discont;
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, ts, NULL);
gst_pad_push (dvdec->audiosrcpad, GST_BUFFER (discont));
}
gst_pad_push (dvdec->audiosrcpad, outbuf);
gst_dvdec_push (dvdec, outbuf, dvdec->audiosrcpad, ts);
}
if (GST_PAD_IS_CONNECTED (dvdec->videosrcpad)) {
@ -820,20 +860,12 @@ gst_dvdec_loop (GstElement *element)
dv_decode_full_frame (dvdec->decoder, GST_BUFFER_DATA (buf),
dvdec->space, outframe_ptrs, outframe_pitches);
GST_BUFFER_TIMESTAMP (outbuf) = ts;
if (dvdec->need_discont) {
GstEvent *discont;
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, ts, NULL);
gst_pad_push (dvdec->videosrcpad, GST_BUFFER (discont));
}
gst_pad_push (dvdec->videosrcpad, outbuf);
gst_dvdec_push (dvdec, outbuf, dvdec->videosrcpad, ts);
}
/* FIXME this is inaccurate for NTSC */
dvdec->next_ts += GST_SECOND / dvdec->framerate;
if (dvdec->next_ts >= dvdec->end_position && !dvdec->loop) {
gst_element_set_eos (GST_ELEMENT (dvdec));
}
if (dvdec->need_discont) {
dvdec->need_discont = FALSE;

2
ext/dv/gstdvdec.h
View file

@ -62,7 +62,9 @@ struct _GstDVDec {
gint height;
gint length;
guint64 next_ts;
guint64 end_position;
gboolean need_discont;
gboolean loop;
gint16 *audio_buffers[4];
};