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ext/dv/gstdvdec.*: Added GstSegment handling, now implements dropping/clipping.
Original commit message from CVS: * ext/dv/gstdvdec.c: (gst_dvdec_init), (gst_dvdec_sink_event), (gst_dvdec_chain), (gst_dvdec_change_state): * ext/dv/gstdvdec.h: Added GstSegment handling, now implements dropping/clipping.
This commit is contained in:
Edward Hervey
parent
7174c10edf
commit
b91d63fb3b
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@ -1,3 +1,10 @@
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2006-06-02 Edward Hervey <edward@fluendo.com>
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* ext/dv/gstdvdec.c: (gst_dvdec_init), (gst_dvdec_sink_event),
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(gst_dvdec_chain), (gst_dvdec_change_state):
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* ext/dv/gstdvdec.h:
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Added GstSegment handling, now implements dropping/clipping.
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2006-06-01 Stefan Kost <ensonic@users.sf.net>
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* ext/aalib/gstaasink.h:
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@ -143,6 +143,7 @@ GST_BOILERPLATE (GstDVDec, gst_dvdec, GstElement, GST_TYPE_ELEMENT);
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static gboolean gst_dvdec_sink_setcaps (GstPad * pad, GstCaps * caps);
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static GstFlowReturn gst_dvdec_chain (GstPad * pad, GstBuffer * buffer);
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static gboolean gst_dvdec_sink_event (GstPad * pad, GstEvent * event);
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static GstStateChangeReturn gst_dvdec_change_state (GstElement * element,
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GstStateChange transition);
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@ -207,6 +208,7 @@ gst_dvdec_init (GstDVDec * dvdec, GstDVDecClass * g_class)
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gst_pad_set_setcaps_function (dvdec->sinkpad,
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GST_DEBUG_FUNCPTR (gst_dvdec_sink_setcaps));
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gst_pad_set_chain_function (dvdec->sinkpad, gst_dvdec_chain);
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gst_pad_set_event_function (dvdec->sinkpad, gst_dvdec_sink_event);
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gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->sinkpad);
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dvdec->srcpad =
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@ -282,6 +284,41 @@ error:
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}
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}
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static gboolean
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gst_dvdec_sink_event (GstPad * pad, GstEvent * event)
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{
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GstDVDec *dvdec;
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gboolean res = TRUE;
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dvdec = GST_DVDEC (gst_pad_get_parent (pad));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_NEWSEGMENT:{
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gboolean update;
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gdouble rate;
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GstFormat format;
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gint64 start, stop, position;
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/* Once -good depends on core >= 0.10.6, use newsegment_full */
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gst_event_parse_new_segment (event, &update, &rate, &format,
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&start, &stop, &position);
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GST_DEBUG_OBJECT (dvdec, "Got NEWSEGMENT [%" GST_TIME_FORMAT
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" - %" GST_TIME_FORMAT " / %" GST_TIME_FORMAT "]",
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GST_TIME_ARGS (start), GST_TIME_ARGS (stop),
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GST_TIME_ARGS (position));
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gst_segment_set_newsegment (dvdec->segment, update, rate, format,
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start, stop, position);
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}
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break;
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default:
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break;
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}
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res = gst_pad_push_event (dvdec->srcpad, event);
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return res;
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}
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static GstFlowReturn
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gst_dvdec_chain (GstPad * pad, GstBuffer * buf)
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{
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@ -293,6 +330,7 @@ gst_dvdec_chain (GstPad * pad, GstBuffer * buf)
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GstBuffer *outbuf;
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GstFlowReturn ret = GST_FLOW_OK;
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guint length;
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gint64 cstart, cstop;
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dvdec = GST_DVDEC (gst_pad_get_parent (pad));
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inframe = GST_BUFFER_DATA (buf);
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@ -302,6 +340,14 @@ gst_dvdec_chain (GstPad * pad, GstBuffer * buf)
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if (G_UNLIKELY (GST_BUFFER_SIZE (buf) < NTSC_BUFFER))
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goto wrong_size;
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/* preliminary dropping. unref and return if outside of configured segment */
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if ((dvdec->segment->format == GST_FORMAT_TIME) &&
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(!(gst_segment_clip (dvdec->segment, GST_FORMAT_TIME,
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GST_BUFFER_TIMESTAMP (buf),
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GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf),
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&cstart, &cstop))))
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goto dropping;
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if (G_UNLIKELY (dv_parse_header (dvdec->decoder, inframe) < 0))
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goto parse_header_error;
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@ -341,7 +387,10 @@ gst_dvdec_chain (GstPad * pad, GstBuffer * buf)
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dv_decode_full_frame (dvdec->decoder, inframe,
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e_dv_color_yuv, outframe_ptrs, outframe_pitches);
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gst_buffer_stamp (outbuf, buf);
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GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET (buf);
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GST_BUFFER_OFFSET_END (outbuf) = GST_BUFFER_OFFSET_END (buf);
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GST_BUFFER_TIMESTAMP (outbuf) = cstart;
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GST_BUFFER_DURATION (outbuf) = cstop - cstart;
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ret = gst_pad_push (dvdec->srcpad, outbuf);
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@ -374,6 +423,13 @@ no_buffer:
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GST_DEBUG_OBJECT (dvdec, "could not allocate buffer");
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goto done;
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}
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dropping:
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{
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GST_DEBUG_OBJECT (dvdec,
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"dropping buffer since it's out of the configured segment");
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goto done;
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}
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}
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static GstStateChangeReturn
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@ -391,6 +447,8 @@ gst_dvdec_change_state (GstElement * element, GstStateChange transition)
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dv_decoder_new (0, dvdec->clamp_luma, dvdec->clamp_chroma);
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dvdec->decoder->quality = qualities[dvdec->quality];
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dv_set_error_log (dvdec->decoder, NULL);
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dvdec->segment = gst_segment_new ();
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gst_segment_init (dvdec->segment, GST_FORMAT_UNDEFINED);
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/*
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* Enable this function call when libdv2 0.100 or higher is more
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* common
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@ -411,6 +469,8 @@ gst_dvdec_change_state (GstElement * element, GstStateChange transition)
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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dv_decoder_free (dvdec->decoder);
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dvdec->decoder = NULL;
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gst_segment_free (dvdec->segment);
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dvdec->segment = NULL;
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break;
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case GST_STATE_CHANGE_READY_TO_NULL:
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break;
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@ -69,6 +69,8 @@ struct _GstDVDec {
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gint video_offset;
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gint drop_factor;
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GstSegment *segment;
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};
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struct _GstDVDecClass {
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