#include <gst/audio/audio.h>
#include "gstdvdemux.h"
+/**
+ * SECTION:element-dvdemux
+ *
+ * <refsect2>
+ * <para>
+ * dvdemux splits raw DV into its audio and video components. The audio will be
+ * decoded raw samples and the video will be encoded DV video.
+ * </para>
+ * <para>
+ * This element can operate in both push and pull mode depending on the capabilities
+ * of the upstream peer.
+ * </para>
+ * <title>Example launch line</title>
+ * <para>
+ * <programlisting>
+ * gst-launch filesrc location=test.dv ! dvdemux name=demux ! queue ! audioconvert ! alsasink demux. ! queue ! dvdec ! xvimagesink
+ * </programlisting>
+ * This pipeline decodes and renders the raw DV stream to an audio and a videosink.
+ * </para>
+ * Last reviewed on 2006-02-27 (0.10.3)
+ * </refsect2>
+ */
+
/* DV output has two modes, normal and wide. The resolution is the same in both
* cases: 720 pixels wide by 576 pixels tall in PAL format, and 720x480 for
* NTSC.
static GstElementDetails dvdemux_details =
GST_ELEMENT_DETAILS ("DV system stream demuxer",
"Codec/Demuxer",
- "Uses libdv to separate DV audio from DV video",
+ "Uses libdv to separate DV audio from DV video (libdv.sourceforge.net)",
"Erik Walthinsen <omega@cse.ogi.edu>, Wim Taymans <wim@fluendo.com>");
static GstStaticPadTemplate sink_temp = GST_STATIC_PAD_TEMPLATE ("sink",
GST_BOILERPLATE (GstDVDemux, gst_dvdemux, GstElement, GST_TYPE_ELEMENT);
+static void gst_dvdemux_finalize (GObject * object);
+/* query functions */
static const GstQueryType *gst_dvdemux_get_src_query_types (GstPad * pad);
static gboolean gst_dvdemux_src_query (GstPad * pad, GstQuery * query);
static const GstQueryType *gst_dvdemux_get_sink_query_types (GstPad * pad);
static gboolean gst_dvdemux_sink_query (GstPad * pad, GstQuery * query);
-static gboolean gst_dvdemux_sink_convert (GstPad * pad, GstFormat src_format,
- gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
-static gboolean gst_dvdemux_src_convert (GstPad * pad, GstFormat src_format,
- gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
+/* convert functions */
+static gboolean gst_dvdemux_sink_convert (GstDVDemux * demux,
+ GstFormat src_format, gint64 src_value, GstFormat * dest_format,
+ gint64 * dest_value);
+static gboolean gst_dvdemux_src_convert (GstDVDemux * demux, GstPad * pad,
+ GstFormat src_format, gint64 src_value, GstFormat * dest_format,
+ gint64 * dest_value);
+/* event functions */
static gboolean gst_dvdemux_handle_src_event (GstPad * pad, GstEvent * event);
+static gboolean gst_dvdemux_handle_sink_event (GstPad * pad, GstEvent * event);
+
+/* scheduling functions */
+static void gst_dvdemux_loop (GstPad * pad);
static GstFlowReturn gst_dvdemux_flush (GstDVDemux * dvdemux);
static GstFlowReturn gst_dvdemux_chain (GstPad * pad, GstBuffer * buffer);
-static gboolean gst_dvdemux_handle_sink_event (GstPad * pad, GstEvent * event);
+/* state change functions */
+static gboolean gst_dvdemux_sink_activate (GstPad * sinkpad);
+static gboolean gst_dvdemux_sink_activate_push (GstPad * sinkpad,
+ gboolean active);
+static gboolean gst_dvdemux_sink_activate_pull (GstPad * sinkpad,
+ gboolean active);
static GstStateChangeReturn gst_dvdemux_change_state (GstElement * element,
GstStateChange transition);
-
static void
gst_dvdemux_base_init (gpointer g_class)
{
static void
gst_dvdemux_class_init (GstDVDemuxClass * klass)
{
+ GObjectClass *gobject_class;
GstElementClass *gstelement_class;
+ gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
- gstelement_class->change_state = gst_dvdemux_change_state;
+ gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_dvdemux_finalize);
+ gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_dvdemux_change_state);
/* table initialization, only do once */
dv_init (0, 0);
dvdemux->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get (&sink_temp),
"sink");
- gst_pad_set_chain_function (dvdemux->sinkpad, gst_dvdemux_chain);
- gst_pad_set_event_function (dvdemux->sinkpad, gst_dvdemux_handle_sink_event);
+ /* we can operate in pull and push mode so we install
+ * a custom activate function */
+ gst_pad_set_activate_function (dvdemux->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_dvdemux_sink_activate));
+ /* the function to activate in push mode */
+ gst_pad_set_activatepush_function (dvdemux->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_dvdemux_sink_activate_push));
+ /* the function to activate in pull mode */
+ gst_pad_set_activatepull_function (dvdemux->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_dvdemux_sink_activate_pull));
+ /* for push mode, this is the chain function */
+ gst_pad_set_chain_function (dvdemux->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_dvdemux_chain));
+ /* handling events (in push mode only) */
+ gst_pad_set_event_function (dvdemux->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_dvdemux_handle_sink_event));
+ /* query functions */
gst_pad_set_query_function (dvdemux->sinkpad,
GST_DEBUG_FUNCPTR (gst_dvdemux_sink_query));
gst_pad_set_query_type_function (dvdemux->sinkpad,
GST_DEBUG_FUNCPTR (gst_dvdemux_get_sink_query_types));
+
+ /* now add the pad */
gst_element_add_pad (GST_ELEMENT (dvdemux), dvdemux->sinkpad);
dvdemux->adapter = gst_adapter_new ();
+ /* we need 4 temp buffers for audio decoding which are of a static
+ * size and which we can allocate here */
for (i = 0; i < 4; i++) {
dvdemux->audio_buffers[i] =
(gint16 *) g_malloc (DV_AUDIO_MAX_SAMPLES * sizeof (gint16));
}
static void
+gst_dvdemux_finalize (GObject * object)
+{
+ GstDVDemux *dvdemux;
+ gint i;
+
+ dvdemux = GST_DVDEMUX (object);
+
+ g_object_unref (dvdemux->adapter);
+
+ /* clean up temp audio buffers */
+ for (i = 0; i < 4; i++) {
+ g_free (dvdemux->audio_buffers[i]);
+ }
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+/* reset to default values before starting streaming */
+static void
+gst_dvdemux_reset (GstDVDemux * dvdemux)
+{
+ dvdemux->frame_offset = 0;
+ dvdemux->audio_offset = 0;
+ dvdemux->video_offset = 0;
+ dvdemux->framecount = 0;
+ dvdemux->found_header = FALSE;
+ dvdemux->frame_len = -1;
+ dvdemux->need_segment = FALSE;
+ dvdemux->new_media = FALSE;
+ dvdemux->framerate_numerator = 0;
+ dvdemux->framerate_denominator = 0;
+ dvdemux->height = 0;
+ dvdemux->frequency = 0;
+ dvdemux->channels = 0;
+ dvdemux->wide = FALSE;
+ gst_segment_init (&dvdemux->byte_segment, GST_FORMAT_BYTES);
+ gst_segment_init (&dvdemux->time_segment, GST_FORMAT_TIME);
+}
+
+static void
gst_dvdemux_add_pads (GstDVDemux * dvdemux)
{
dvdemux->videosrcpad =
}
static gboolean
-gst_dvdemux_src_convert (GstPad * pad, GstFormat src_format, gint64 src_value,
- GstFormat * dest_format, gint64 * dest_value)
+gst_dvdemux_src_convert (GstDVDemux * dvdemux, GstPad * pad,
+ GstFormat src_format, gint64 src_value, GstFormat * dest_format,
+ gint64 * dest_value)
{
gboolean res = TRUE;
- GstDVDemux *dvdemux;
- dvdemux = GST_DVDEMUX (gst_pad_get_parent (pad));
+ if (*dest_format == src_format || src_value == -1) {
+ *dest_value = src_value;
+ goto done;
+ }
+
if (dvdemux->frame_len == -1)
goto error;
if (dvdemux->decoder == NULL)
goto error;
- if (*dest_format == src_format) {
- *dest_value = src_value;
- goto done;
- }
-
- GST_INFO ("pad:%s:%s, src_value:%lld, src_format:%d, dest_format:%d",
- GST_DEBUG_PAD_NAME (pad), src_value, src_format, *dest_format);
+ GST_INFO_OBJECT (pad, "src_value:%lld, src_format:%d, dest_format:%d",
+ src_value, src_format, *dest_format);
switch (src_format) {
case GST_FORMAT_BYTES:
if (pad == dvdemux->videosrcpad)
*dest_value = src_value / dvdemux->frame_len;
else if (pad == dvdemux->audiosrcpad)
- *dest_value = src_value / gst_audio_frame_byte_size (pad);
+ *dest_value = src_value / (2 * dvdemux->channels);
break;
case GST_FORMAT_TIME:
*dest_format = GST_FORMAT_TIME;
*dest_value = 0;
} else if (pad == dvdemux->audiosrcpad) {
*dest_value = gst_util_uint64_scale (src_value,
- 2 * dvdemux->frequency * dvdemux->channels,
- GST_SECOND * gst_audio_frame_byte_size (pad));
+ dvdemux->frequency, GST_SECOND);
}
break;
default:
} else if (pad == dvdemux->audiosrcpad) {
if (src_value)
*dest_value = gst_util_uint64_scale (src_value,
- GST_SECOND * gst_audio_frame_byte_size (pad),
- 2 * dvdemux->frequency * dvdemux->channels);
+ GST_SECOND, dvdemux->frequency);
else
*dest_value = 0;
}
if (pad == dvdemux->videosrcpad) {
*dest_value = src_value * dvdemux->frame_len;
} else if (pad == dvdemux->audiosrcpad) {
- *dest_value = src_value * gst_audio_frame_byte_size (pad);
+ *dest_value = src_value * 2 * dvdemux->channels;
}
break;
default:
}
done:
- gst_object_unref (dvdemux);
-
- GST_INFO ("Result : dest_format:%d, dest_value:%lld, res:%d",
+ GST_INFO_OBJECT (pad, "Result : dest_format:%d, dest_value:%lld, res:%d",
*dest_format, *dest_value, res);
return res;
error:
{
GST_INFO ("source conversion failed");
- gst_object_unref (dvdemux);
return FALSE;
}
}
static gboolean
-gst_dvdemux_sink_convert (GstPad * pad, GstFormat src_format, gint64 src_value,
- GstFormat * dest_format, gint64 * dest_value)
+gst_dvdemux_sink_convert (GstDVDemux * dvdemux, GstFormat src_format,
+ gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
{
gboolean res = TRUE;
- GstDVDemux *dvdemux;
-
- dvdemux = GST_DVDEMUX (gst_pad_get_parent (pad));
- if (dvdemux->frame_len <= 0)
- goto error;
-
- GST_DEBUG ("%d -> %d", src_format, *dest_format);
- GST_INFO ("pad:%s:%s, src_value:%lld, src_format:%d, dest_format:%d",
- GST_DEBUG_PAD_NAME (pad), src_value, src_format, *dest_format);
+ GST_DEBUG_OBJECT (dvdemux, "%d -> %d", src_format, *dest_format);
+ GST_INFO_OBJECT (dvdemux, "src_value:%lld, src_format:%d, dest_format:%d",
+ src_value, src_format, *dest_format);
if (*dest_format == GST_FORMAT_DEFAULT)
*dest_format = GST_FORMAT_TIME;
- if (*dest_format == src_format) {
+ if (*dest_format == src_format || src_value == -1) {
*dest_value = src_value;
goto done;
}
+ if (dvdemux->frame_len <= 0)
+ goto error;
+
switch (src_format) {
case GST_FORMAT_BYTES:
switch (*dest_format) {
{
guint64 frame;
- /* get frame number */
+ /* get frame number, rounds down so don't combine this
+ * line and the next line. */
frame = src_value / dvdemux->frame_len;
*dest_value = gst_util_uint64_scale (frame,
gst_util_uint64_scale (src_value, dvdemux->framerate_numerator,
dvdemux->framerate_denominator * GST_SECOND);
- /* calculate the offset */
+ /* calculate the offset from the rounded frame */
*dest_value = frame * dvdemux->frame_len;
break;
}
default:
res = FALSE;
}
- GST_INFO ("Result : dest_format:%d, dest_value:%lld, res:%d",
+ GST_INFO_OBJECT (dvdemux, "Result : dest_format:%d, dest_value:%lld, res:%d",
*dest_format, *dest_value, res);
done:
- gst_object_unref (dvdemux);
return res;
error:
{
- GST_INFO ("sink conversion failed");
- gst_object_unref (dvdemux);
+ GST_INFO_OBJECT (dvdemux, "sink conversion failed");
return FALSE;
}
}
gst_query_parse_position (query, &format, NULL);
/* bring the position to the requested format. */
- if (!(res = gst_pad_query_convert (pad,
- GST_FORMAT_TIME, dvdemux->timestamp, &format, &cur)))
+ if (!(res = gst_dvdemux_src_convert (dvdemux, pad,
+ GST_FORMAT_TIME, dvdemux->time_segment.last_stop,
+ &format, &cur)))
goto error;
gst_query_set_position (query, format, cur);
break;
/* convert end to requested format */
if (end != -1) {
format2 = format;
- if (!(res = gst_pad_query_convert (dvdemux->sinkpad,
+ if (!(res = gst_dvdemux_sink_convert (dvdemux,
GST_FORMAT_BYTES, end, &format2, &end))) {
goto error;
}
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
if (!(res =
- gst_dvdemux_src_convert (pad, src_fmt, src_val, &dest_fmt,
- &dest_val)))
+ gst_dvdemux_src_convert (dvdemux, pad, src_fmt, src_val,
+ &dest_fmt, &dest_val)))
goto error;
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
break;
return res;
+ /* ERRORS */
error:
{
gst_object_unref (dvdemux);
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
if (!(res =
- gst_dvdemux_sink_convert (pad, src_fmt, src_val, &dest_fmt,
+ gst_dvdemux_sink_convert (dvdemux, src_fmt, src_val, &dest_fmt,
&dest_val)))
goto error;
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
return res;
+ /* ERRORS */
error:
{
gst_object_unref (dvdemux);
}
}
+/* takes ownership of the event */
static gboolean
-gst_dvdemux_send_event (GstDVDemux * dvdemux, GstEvent * event)
+gst_dvdemux_push_event (GstDVDemux * dvdemux, GstEvent * event)
{
gboolean res = FALSE;
- gst_event_ref (event);
- if (dvdemux->videosrcpad)
+ if (dvdemux->videosrcpad) {
+ gst_event_ref (event);
res |= gst_pad_push_event (dvdemux->videosrcpad, event);
+ }
+
if (dvdemux->audiosrcpad)
res |= gst_pad_push_event (dvdemux->audiosrcpad, event);
+ else
+ gst_event_unref (event);
return res;
}
/* we are not blocking on anything exect the push() calls
* to the peer which will be unblocked by forwarding the
* event.*/
- res = gst_dvdemux_send_event (dvdemux, event);
+ res = gst_dvdemux_push_event (dvdemux, event);
break;
case GST_EVENT_FLUSH_STOP:
gst_adapter_clear (dvdemux->adapter);
GST_DEBUG ("cleared adapter");
- res = gst_dvdemux_send_event (dvdemux, event);
gst_segment_init (&dvdemux->byte_segment, GST_FORMAT_BYTES);
gst_segment_init (&dvdemux->time_segment, GST_FORMAT_TIME);
+ res = gst_dvdemux_push_event (dvdemux, event);
break;
case GST_EVENT_NEWSEGMENT:
{
rate, format, start, stop, time);
/* and we can just forward this time event */
- res = gst_dvdemux_send_event (dvdemux, event);
+ res = gst_dvdemux_push_event (dvdemux, event);
break;
default:
gst_event_unref (event);
break;
}
case GST_EVENT_EOS:
- /* flush any pending data */
+ /* flush any pending data, should be nothing left. */
gst_dvdemux_flush (dvdemux);
/* forward event */
- res = gst_dvdemux_send_event (dvdemux, event);
+ res = gst_dvdemux_push_event (dvdemux, event);
/* and clear the adapter */
gst_adapter_clear (dvdemux->adapter);
break;
default:
- res = gst_dvdemux_send_event (dvdemux, event);
+ res = gst_dvdemux_push_event (dvdemux, event);
break;
}
return res;
}
+/* convert a pair of values on the given srcpad */
+static gboolean
+gst_dvdemux_convert_src_pair (GstDVDemux * dvdemux, GstPad * pad,
+ GstFormat src_format, gint64 src_start, gint64 src_stop,
+ GstFormat dst_format, gint64 * dst_start, gint64 * dst_stop)
+{
+ gboolean res;
+
+ GST_INFO ("starting conversion of start");
+ /* bring the format to time on srcpad. */
+ if (!(res = gst_dvdemux_src_convert (dvdemux, pad,
+ src_format, src_start, &dst_format, dst_start))) {
+ goto done;
+ }
+ GST_INFO ("Finished conversion of start: %lld", *dst_start);
+
+ GST_INFO ("starting conversion of stop");
+ /* bring the format to time on srcpad. */
+ if (!(res = gst_dvdemux_src_convert (dvdemux, pad,
+ src_format, src_stop, &dst_format, dst_stop))) {
+ /* could not convert seek format to time offset */
+ goto done;
+ }
+ GST_INFO ("Finished conversion of stop: %lld", *dst_stop);
+done:
+ return res;
+}
+
+/* convert a pair of values on the sinkpad */
+static gboolean
+gst_dvdemux_convert_sink_pair (GstDVDemux * dvdemux,
+ GstFormat src_format, gint64 src_start, gint64 src_stop,
+ GstFormat dst_format, gint64 * dst_start, gint64 * dst_stop)
+{
+ gboolean res;
+
+ GST_INFO ("starting conversion of start");
+ /* bring the format to time on srcpad. */
+ if (!(res = gst_dvdemux_sink_convert (dvdemux,
+ src_format, src_start, &dst_format, dst_start))) {
+ goto done;
+ }
+ GST_INFO ("Finished conversion of start: %lld", *dst_start);
+
+ GST_INFO ("starting conversion of stop");
+ /* bring the format to time on srcpad. */
+ if (!(res = gst_dvdemux_sink_convert (dvdemux,
+ src_format, src_stop, &dst_format, dst_stop))) {
+ /* could not convert seek format to time offset */
+ goto done;
+ }
+ GST_INFO ("Finished conversion of stop: %lld", *dst_stop);
+done:
+ return res;
+}
+
+/* convert a pair of values on the srcpad to a pair of
+ * values on the sinkpad
+ */
+static gboolean
+gst_dvdemux_convert_src_to_sink (GstDVDemux * dvdemux, GstPad * pad,
+ GstFormat src_format, gint64 src_start, gint64 src_stop,
+ GstFormat dst_format, gint64 * dst_start, gint64 * dst_stop)
+{
+ GstFormat conv;
+ gboolean res;
+
+ conv = GST_FORMAT_TIME;
+ /* convert to TIME intermediate format */
+ if (!(res = gst_dvdemux_convert_src_pair (dvdemux, pad,
+ src_format, src_start, src_stop, conv, dst_start, dst_stop))) {
+ /* could not convert format to time offset */
+ goto done;
+ }
+ /* convert to dst format on sinkpad */
+ if (!(res = gst_dvdemux_convert_sink_pair (dvdemux,
+ conv, *dst_start, *dst_stop, dst_format, dst_start, dst_stop))) {
+ /* could not convert format to time offset */
+ goto done;
+ }
+done:
+ return res;
+}
+
+/* handle seek in push base mode.
+ *
+ * Convert the time seek to a bytes seek and send it
+ * upstream
+ *
+ * FIXME, upstream might be able to perform time based
+ * seek too.
+ */
+static gboolean
+gst_dvdemux_handle_push_seek (GstDVDemux * dvdemux, GstPad * pad,
+ GstEvent * event)
+{
+ gboolean res;
+ gdouble rate;
+ GstSeekFlags flags;
+ GstFormat format;
+ GstSeekType cur_type, stop_type;
+ gint64 cur, stop;
+ gint64 start_position, end_position;
+ GstEvent *newevent;
+
+ gst_event_parse_seek (event, &rate, &format, &flags,
+ &cur_type, &cur, &stop_type, &stop);
+
+ /* we convert the start/stop on the srcpad to the byte format
+ * on the sinkpad and forward the event */
+ res = gst_dvdemux_convert_src_to_sink (dvdemux, pad,
+ format, cur, stop, GST_FORMAT_BYTES, &start_position, &end_position);
+ if (!res)
+ goto done;
+
+ /* now this is the updated seek event on bytes */
+ newevent = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags,
+ cur_type, start_position, stop_type, end_position);
+
+ res = gst_pad_push_event (dvdemux->sinkpad, newevent);
+
+done:
+ return res;
+}
+
+/* position ourselves to the configured segment, used in pull mode.
+ * The input segment is in TIME format. We convert the time values
+ * to bytes values into our byte_segment which we use to pull data from
+ * the sinkpad peer.
+ */
+static gboolean
+gst_dvdemux_do_seek (GstDVDemux * demux, GstSegment * segment)
+{
+ gboolean res;
+ GstFormat format;
+
+ /* position to value configured is last_stop, this will round down
+ * to the byte position where the frame containing the given
+ * timestamp can be found. */
+ format = GST_FORMAT_BYTES;
+ res = gst_dvdemux_sink_convert (demux,
+ segment->format, segment->last_stop,
+ &format, &demux->byte_segment.last_stop);
+ if (!res)
+ goto done;
+
+ /* update byte segment start */
+ gst_dvdemux_sink_convert (demux,
+ segment->format, segment->start, &format, &demux->byte_segment.start);
+
+ /* update byte segment stop */
+ gst_dvdemux_sink_convert (demux,
+ segment->format, segment->stop, &format, &demux->byte_segment.stop);
+
+ /* update byte segment time */
+ gst_dvdemux_sink_convert (demux,
+ segment->format, segment->time, &format, &demux->byte_segment.time);
+
+ /* calculate current frame number */
+ format = GST_FORMAT_DEFAULT;
+ gst_dvdemux_src_convert (demux, demux->videosrcpad,
+ segment->format, segment->start, &format, &demux->video_offset);
+
+ /* calculate current audio number */
+ format = GST_FORMAT_DEFAULT;
+ gst_dvdemux_src_convert (demux, demux->audiosrcpad,
+ segment->format, segment->start, &format, &demux->audio_offset);
+
+ /* every DV frame corresponts with one video frame */
+ demux->frame_offset = demux->video_offset;
+
+done:
+ return res;
+}
+
+/* handle seek in pull base mode.
+ */
+static gboolean
+gst_dvdemux_handle_pull_seek (GstDVDemux * demux, GstPad * pad,
+ GstEvent * event)
+{
+ gboolean res;
+ gdouble rate;
+ GstFormat format;
+ GstSeekFlags flags;
+ GstSeekType cur_type, stop_type;
+ gint64 cur, stop;
+ gboolean flush;
+ gboolean update;
+ GstSegment seeksegment;
+
+ GST_DEBUG_OBJECT (demux, "doing seek");
+
+ /* first bring the event format to TIME, our native format
+ * to perform the seek on */
+ if (event) {
+ GstFormat conv;
+
+ gst_event_parse_seek (event, &rate, &format, &flags,
+ &cur_type, &cur, &stop_type, &stop);
+
+ /* can't seek backwards yet */
+ if (rate <= 0.0)
+ goto wrong_rate;
+
+ /* convert input format to TIME */
+ conv = GST_FORMAT_TIME;
+ if (!(res = gst_dvdemux_convert_src_pair (demux, pad,
+ format, cur, stop, conv, &cur, &stop)))
+ goto no_format;
+
+ format = GST_FORMAT_TIME;
+ } else {
+ flags = 0;
+ }
+
+ flush = flags & GST_SEEK_FLAG_FLUSH;
+
+ /* send flush start */
+ if (flush)
+ gst_dvdemux_push_event (demux, gst_event_new_flush_start ());
+ else
+ gst_pad_pause_task (demux->sinkpad);
+
+ /* grab streaming lock, this should eventually be possible, either
+ * because the task is paused or our streaming thread stopped
+ * because our peer is flushing. */
+ GST_PAD_STREAM_LOCK (demux->sinkpad);
+
+ /* make copy into temp structure, we can only update the main one
+ * when the subclass actually could to the seek. */
+ memcpy (&seeksegment, &demux->time_segment, sizeof (GstSegment));
+
+ /* now configure the seek segment */
+ if (event) {
+ gst_segment_set_seek (&seeksegment, rate, format, flags,
+ cur_type, cur, stop_type, stop, &update);
+ }
+
+ GST_DEBUG_OBJECT (demux, "segment configured from %" G_GINT64_FORMAT
+ " to %" G_GINT64_FORMAT ", position %" G_GINT64_FORMAT,
+ seeksegment.start, seeksegment.stop, seeksegment.last_stop);
+
+ /* do the seek, segment.last_stop contains new position. */
+ res = gst_dvdemux_do_seek (demux, &seeksegment);
+
+ /* and prepare to continue streaming */
+ if (flush) {
+ /* send flush stop, peer will accept data and events again. We
+ * are not yet providing data as we still have the STREAM_LOCK. */
+ gst_dvdemux_push_event (demux, gst_event_new_flush_stop ());
+ } else if (res && demux->running) {
+ /* we are running the current segment and doing a non-flushing seek,
+ * close the segment first based on the last_stop. */
+ GST_DEBUG_OBJECT (demux, "closing running segment %" G_GINT64_FORMAT
+ " to %" G_GINT64_FORMAT, demux->time_segment.start,
+ demux->time_segment.last_stop);
+
+ gst_dvdemux_push_event (demux,
+ gst_event_new_new_segment (TRUE,
+ demux->time_segment.rate, demux->time_segment.format,
+ demux->time_segment.start, demux->time_segment.last_stop,
+ demux->time_segment.time));
+ }
+
+ /* if successfull seek, we update our real segment and push
+ * out the new segment. */
+ if (res) {
+ memcpy (&demux->time_segment, &seeksegment, sizeof (GstSegment));
+
+ if (demux->time_segment.flags & GST_SEEK_FLAG_SEGMENT) {
+ gst_element_post_message (GST_ELEMENT_CAST (demux),
+ gst_message_new_segment_start (GST_OBJECT_CAST (demux),
+ demux->time_segment.format, demux->time_segment.last_stop));
+ }
+ if ((stop = demux->time_segment.stop) == -1)
+ stop = demux->time_segment.duration;
+
+ /* now send the newsegment */
+ GST_DEBUG_OBJECT (demux, "Sending newsegment from %" GST_TIME_FORMAT
+ " to %" GST_TIME_FORMAT, GST_TIME_ARGS (demux->time_segment.start),
+ GST_TIME_ARGS (stop));
+
+ gst_dvdemux_push_event (demux,
+ gst_event_new_new_segment (FALSE,
+ demux->time_segment.rate, demux->time_segment.format,
+ demux->time_segment.last_stop, stop, demux->time_segment.time));
+ }
+
+ demux->running = TRUE;
+ /* and restart the task in case it got paused explicitely or by
+ * the FLUSH_START event we pushed out. */
+ gst_pad_start_task (demux->sinkpad, (GstTaskFunction) gst_dvdemux_loop,
+ demux->sinkpad);
+
+ /* and release the lock again so we can continue streaming */
+ GST_PAD_STREAM_UNLOCK (demux->sinkpad);
+
+ return TRUE;
+
+ /* ERRORS */
+wrong_rate:
+ {
+ GST_DEBUG_OBJECT (demux, "negative playback rate %lf not supported.", rate);
+ return FALSE;
+ }
+no_format:
+ {
+ GST_DEBUG_OBJECT (demux, "cannot convert to TIME format, seek aborted.");
+ return FALSE;
+ }
+}
+
+/* handle an event on the source pad, it's most likely a seek */
static gboolean
gst_dvdemux_handle_src_event (GstPad * pad, GstEvent * event)
{
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
- {
- GstEvent *newevent;
- gint64 offset;
- GstFormat format, conv;
- gint64 cur, stop;
- gdouble rate;
- GstSeekType cur_type, stop_type;
- GstSeekFlags flags;
- gint64 start_position, end_position;
-
- gst_event_parse_seek (event, &rate, &format, &flags,
- &cur_type, &cur, &stop_type, &stop);
-
- if ((offset = cur) != -1) {
- GST_INFO ("starting conversion of cur");
- /* bring the format to time on srcpad. */
- conv = GST_FORMAT_TIME;
- if (!(res = gst_pad_query_convert (pad,
- format, offset, &conv, &start_position))) {
- /* could not convert seek format to time offset */
- break;
- }
- /* and convert to bytes on sinkpad. */
- conv = GST_FORMAT_BYTES;
- if (!(res = gst_pad_query_convert (dvdemux->sinkpad,
- GST_FORMAT_TIME, start_position, &conv, &start_position))) {
- /* could not convert time format to bytes offset */
- break;
- }
- GST_INFO ("Finished conversion of cur, BYTES cur : %lld",
- start_position);
- } else {
- start_position = -1;
- }
-
- if ((offset = stop) != -1) {
- GST_INFO ("starting conversion of stop");
- /* bring the format to time on srcpad. */
- conv = GST_FORMAT_TIME;
- if (!(res = gst_pad_query_convert (pad,
- format, offset, &conv, &end_position))) {
- /* could not convert seek format to time offset */
- break;
- }
- conv = GST_FORMAT_BYTES;
- /* and convert to bytes on sinkpad. */
- if (!(res = gst_pad_query_convert (dvdemux->sinkpad,
- GST_FORMAT_TIME, end_position, &conv, &end_position))) {
- /* could not convert seek format to bytes offset */
- break;
- }
- GST_INFO ("Finished conversion of stop, BYTES cur : %lld",
- start_position);
- } else {
- end_position = -1;
- }
- /* now this is the updated seek event on bytes */
- newevent = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags,
- cur_type, start_position, stop_type, end_position);
-
- res = gst_pad_push_event (dvdemux->sinkpad, newevent);
+ /* seek handler is installed based on scheduling mode */
+ if (dvdemux->seek_handler)
+ res = dvdemux->seek_handler (dvdemux, pad, event);
+ else
+ res = FALSE;
break;
- }
+ case GST_EVENT_QOS:
+ /* we can't really (yet) do QoS */
+ case GST_EVENT_NAVIGATION:
+ /* no navigation either... */
default:
res = FALSE;
break;
return res;
}
+/* does not take ownership of buffer */
static GstFlowReturn
-gst_dvdemux_demux_audio (GstDVDemux * dvdemux, const guint8 * data)
+gst_dvdemux_demux_audio (GstDVDemux * dvdemux, GstBuffer * buffer,
+ guint64 duration)
{
gint num_samples;
gint frequency, channels;
GstFlowReturn ret;
+ const guint8 *data;
frequency = dv_get_frequency (dvdemux->decoder);
channels = dv_get_num_channels (dvdemux->decoder);
+ data = GST_BUFFER_DATA (buffer);
+
/* check if format changed */
if ((frequency != dvdemux->frequency) || (channels != dvdemux->channels)) {
GstCaps *caps;
}
GST_DEBUG ("pushing audio %" GST_TIME_FORMAT,
- GST_TIME_ARGS (dvdemux->timestamp));
+ GST_TIME_ARGS (dvdemux->time_segment.last_stop));
- GST_BUFFER_TIMESTAMP (outbuf) = dvdemux->timestamp;
- GST_BUFFER_DURATION (outbuf) = dvdemux->duration;
+ GST_BUFFER_TIMESTAMP (outbuf) = dvdemux->time_segment.last_stop;
+ GST_BUFFER_DURATION (outbuf) = duration;
GST_BUFFER_OFFSET (outbuf) = dvdemux->audio_offset;
dvdemux->audio_offset += num_samples;
GST_BUFFER_OFFSET_END (outbuf) = dvdemux->audio_offset;
return ret;
}
+/* takes ownership of buffer */
static GstFlowReturn
-gst_dvdemux_demux_video (GstDVDemux * dvdemux, const guint8 * data)
+gst_dvdemux_demux_video (GstDVDemux * dvdemux, GstBuffer * buffer,
+ guint64 duration)
{
GstBuffer *outbuf;
gint height;
wide = dv_format_wide (dvdemux->decoder);
/* see if anything changed */
- if ((dvdemux->height != height) || dvdemux->wide != wide) {
+ if (G_UNLIKELY ((dvdemux->height != height) || dvdemux->wide != wide)) {
GstCaps *caps;
gint par_x, par_y;
gst_caps_unref (caps);
}
- outbuf = gst_buffer_new ();
+ /* takes ownership of buffer here, we just need to modify
+ * the metadata. */
+ outbuf = gst_buffer_make_metadata_writable (buffer);
- gst_buffer_set_data (outbuf, (guint8 *) data, dvdemux->frame_len);
- outbuf->malloc_data = GST_BUFFER_DATA (outbuf);
-
- GST_BUFFER_TIMESTAMP (outbuf) = dvdemux->timestamp;
+ GST_BUFFER_TIMESTAMP (outbuf) = dvdemux->time_segment.last_stop;
GST_BUFFER_OFFSET (outbuf) = dvdemux->video_offset;
GST_BUFFER_OFFSET_END (outbuf) = dvdemux->video_offset + 1;
- GST_BUFFER_DURATION (outbuf) = dvdemux->duration;
+ GST_BUFFER_DURATION (outbuf) = duration;
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (dvdemux->videosrcpad));
GST_DEBUG ("pushing video %" GST_TIME_FORMAT,
- GST_TIME_ARGS (dvdemux->timestamp));
+ GST_TIME_ARGS (dvdemux->time_segment.last_stop));
ret = gst_pad_push (dvdemux->videosrcpad, outbuf);
return ret;
}
+/* takes ownership of buffer */
static GstFlowReturn
-gst_dvdemux_demux_frame (GstDVDemux * dvdemux, const guint8 * data)
+gst_dvdemux_demux_frame (GstDVDemux * dvdemux, GstBuffer * buffer)
{
GstClockTime next_ts;
GstFlowReturn aret, vret, ret;
+ guint8 *data;
+ guint64 duration;
- if (dvdemux->need_segment) {
+ if (G_UNLIKELY (dvdemux->need_segment)) {
GstEvent *event;
GstFormat format;
gboolean res;
/* convert to time and store as start/end_timestamp */
format = GST_FORMAT_TIME;
- if (!(res = gst_pad_query_convert (dvdemux->sinkpad,
+ if (!(res = gst_dvdemux_convert_sink_pair (dvdemux,
GST_FORMAT_BYTES, dvdemux->byte_segment.start,
- &format, &dvdemux->time_segment.start))) {
+ dvdemux->byte_segment.stop, format,
+ &dvdemux->time_segment.start, &dvdemux->time_segment.stop)))
goto segment_error;
- }
- dvdemux->timestamp = dvdemux->time_segment.start;
/* calculate current frame number */
format = GST_FORMAT_DEFAULT;
- if (!(res = gst_pad_query_convert (dvdemux->videosrcpad,
+ if (!(res = gst_dvdemux_src_convert (dvdemux, dvdemux->videosrcpad,
GST_FORMAT_TIME, dvdemux->time_segment.start,
- &format, &dvdemux->total_frames))) {
+ &format, &dvdemux->frame_offset)))
goto segment_error;
- }
-
- if (dvdemux->byte_segment.stop == -1) {
- dvdemux->time_segment.stop = -1;
- } else {
- format = GST_FORMAT_TIME;
- if (!(res = gst_pad_query_convert (dvdemux->sinkpad,
- GST_FORMAT_BYTES, dvdemux->byte_segment.stop,
- &format, &dvdemux->time_segment.stop))) {
- goto segment_error;
- }
- }
GST_DEBUG_OBJECT (dvdemux, "sending segment start: %" GST_TIME_FORMAT
", stop: %" GST_TIME_FORMAT ", time: %" GST_TIME_FORMAT,
- dvdemux->time_segment.start, dvdemux->time_segment.stop,
- dvdemux->time_segment.start);
+ GST_TIME_ARGS (dvdemux->time_segment.start),
+ GST_TIME_ARGS (dvdemux->time_segment.stop),
+ GST_TIME_ARGS (dvdemux->time_segment.start));
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
dvdemux->time_segment.start, dvdemux->time_segment.stop,
dvdemux->time_segment.start);
- gst_dvdemux_send_event (dvdemux, event);
+ gst_dvdemux_push_event (dvdemux, event);
dvdemux->need_segment = FALSE;
}
next_ts = gst_util_uint64_scale_int (
- (dvdemux->total_frames + 1) * GST_SECOND,
+ (dvdemux->frame_offset + 1) * GST_SECOND,
dvdemux->framerate_denominator, dvdemux->framerate_numerator);
- dvdemux->duration = next_ts - dvdemux->timestamp;
+ duration = next_ts - dvdemux->time_segment.last_stop;
+
+ data = GST_BUFFER_DATA (buffer);
dv_parse_packs (dvdemux->decoder, data);
- if (dv_is_new_recording (dvdemux->decoder, data))
+ if (G_UNLIKELY (dv_is_new_recording (dvdemux->decoder, data)))
dvdemux->new_media = TRUE;
- aret = ret = gst_dvdemux_demux_audio (dvdemux, data);
- if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)
+ /* does not take ownership of buffer */
+ aret = ret = gst_dvdemux_demux_audio (dvdemux, buffer, duration);
+ if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)) {
+ gst_buffer_unref (buffer);
goto done;
+ }
- vret = ret = gst_dvdemux_demux_video (dvdemux, data);
- if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)
+ /* takes ownership of buffer */
+ vret = ret = gst_dvdemux_demux_video (dvdemux, buffer, duration);
+ if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED))
goto done;
- if (aret == GST_FLOW_NOT_LINKED && vret == GST_FLOW_NOT_LINKED) {
+ /* if both are not linked, we stop */
+ if (G_UNLIKELY (aret == GST_FLOW_NOT_LINKED && vret == GST_FLOW_NOT_LINKED)) {
ret = GST_FLOW_NOT_LINKED;
goto done;
}
ret = GST_FLOW_OK;
- dvdemux->timestamp = next_ts;
- dvdemux->total_frames++;
+ dvdemux->time_segment.last_stop = next_ts;
+ dvdemux->frame_offset++;
done:
return ret;
+ /* ERRORS */
segment_error:
{
GST_DEBUG ("error generating new_segment event");
+ gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
}
data = gst_adapter_peek (dvdemux->adapter, dvdemux->frame_len);
/* parse header to know the length and other params */
- if (dv_parse_header (dvdemux->decoder, data) < 0)
+ if (G_UNLIKELY (dv_parse_header (dvdemux->decoder, data) < 0))
goto parse_header_error;
dvdemux->found_header = TRUE;
* it can reset caps */
/* if we still have enough for a frame, start decoding */
- if (gst_adapter_available (dvdemux->adapter) >= length) {
+ if (G_LIKELY (gst_adapter_available (dvdemux->adapter) >= length)) {
+ GstBuffer *buffer;
data = gst_adapter_take (dvdemux->adapter, length);
- /* and decode the data */
- ret = gst_dvdemux_demux_frame (dvdemux, data);
+ /* create buffer for the remainder of the code */
+ buffer = gst_buffer_new ();
+ GST_BUFFER_DATA (buffer) = (guint8 *) data;
+ GST_BUFFER_SIZE (buffer) = length;
+ GST_BUFFER_MALLOCDATA (buffer) = (guint8 *) data;
- if (ret != GST_FLOW_OK)
+ /* and decode the buffer, takes ownership */
+ ret = gst_dvdemux_demux_frame (dvdemux, buffer);
+ if (G_UNLIKELY (ret != GST_FLOW_OK))
goto done;
}
}
parse_header_error:
{
GST_ELEMENT_ERROR (dvdemux, STREAM, DECODE,
- ("Error parsing DV header"), ("Error parsing DV header"));
-
+ (NULL), ("Error parsing DV header"));
return GST_FLOW_ERROR;
}
}
dvdemux = GST_DVDEMUX (gst_pad_get_parent (pad));
- if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))
+ /* a discontinuity in the stream, we need to get rid of
+ * accumulated data in the adapter and assume a new frame
+ * starts after the discontinuity */
+ if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)))
gst_adapter_clear (dvdemux->adapter);
/* temporary hack? Can't do this from the state change */
- if (!dvdemux->videosrcpad)
+ if (G_UNLIKELY (!dvdemux->videosrcpad))
gst_dvdemux_add_pads (dvdemux);
gst_adapter_push (dvdemux->adapter, buffer);
/* Apparently dv_parse_header can read from the body of the frame
* too, so it needs more than header_size bytes. Wacky!
*/
- if (dvdemux->frame_len == -1) {
+ if (G_UNLIKELY (dvdemux->frame_len == -1)) {
/* if we don't know the length of a frame, we assume it is
* the NTSC_BUFFER length, as this is enough to figure out
* if this is PAL or NTSC */
return ret;
}
+/* pull based operation.
+ *
+ * Read header first to figure out the frame size. Then read
+ * and decode full frames.
+ */
+static void
+gst_dvdemux_loop (GstPad * pad)
+{
+ GstFlowReturn ret;
+ GstDVDemux *dvdemux;
+ GstBuffer *buffer = NULL;
+ const guint8 *data;
+
+ dvdemux = GST_DVDEMUX (gst_pad_get_parent (pad));
+
+ if (G_UNLIKELY (!dvdemux->found_header)) {
+ /* add pads.. why is this again? */
+ if (!dvdemux->videosrcpad)
+ gst_dvdemux_add_pads (dvdemux);
+
+ GST_DEBUG_OBJECT (dvdemux, "pulling first buffer");
+ /* pull in NTSC sized buffer to figure out the frame
+ * length */
+ ret = gst_pad_pull_range (dvdemux->sinkpad,
+ dvdemux->byte_segment.last_stop, NTSC_BUFFER, &buffer);
+ if (G_UNLIKELY (ret != GST_FLOW_OK))
+ goto pause;
+
+ /* check buffer size, don't want to read small buffers */
+ if (G_UNLIKELY (GST_BUFFER_SIZE (buffer) < NTSC_BUFFER))
+ goto pause;
+
+ data = GST_BUFFER_DATA (buffer);
+
+ /* parse header to know the length and other params */
+ if (G_UNLIKELY (dv_parse_header (dvdemux->decoder, data) < 0))
+ goto parse_header_error;
+
+ /* got header now */
+ dvdemux->found_header = TRUE;
+
+ /* after parsing the header we know the length of the data */
+ dvdemux->PAL = dv_system_50_fields (dvdemux->decoder);
+ dvdemux->frame_len = (dvdemux->PAL ? PAL_BUFFER : NTSC_BUFFER);
+ if (dvdemux->PAL) {
+ dvdemux->framerate_numerator = PAL_FRAMERATE_NUMERATOR;
+ dvdemux->framerate_denominator = PAL_FRAMERATE_DENOMINATOR;
+ } else {
+ dvdemux->framerate_numerator = NTSC_FRAMERATE_NUMERATOR;
+ dvdemux->framerate_denominator = NTSC_FRAMERATE_DENOMINATOR;
+ }
+ dvdemux->need_segment = TRUE;
+
+ /* see if we need to read a larger part */
+ if (dvdemux->frame_len != NTSC_BUFFER) {
+ gst_buffer_unref (buffer);
+ buffer = NULL;
+ }
+ }
+ if (G_LIKELY (buffer == NULL)) {
+ GST_DEBUG_OBJECT (dvdemux, "pulling buffer at offset %" G_GINT64_FORMAT,
+ dvdemux->byte_segment.last_stop);
+
+ ret = gst_pad_pull_range (dvdemux->sinkpad,
+ dvdemux->byte_segment.last_stop, dvdemux->frame_len, &buffer);
+ if (ret == GST_FLOW_UNEXPECTED)
+ goto eos;
+
+ if (ret != GST_FLOW_OK)
+ goto pause;
+
+ /* check buffer size, don't want to read small buffers */
+ if (GST_BUFFER_SIZE (buffer) < dvdemux->frame_len)
+ goto pause;
+ }
+ /* and decode the buffer */
+ ret = gst_dvdemux_demux_frame (dvdemux, buffer);
+ if (G_UNLIKELY (ret != GST_FLOW_OK))
+ goto pause;
+
+ /* and position ourselves for the next buffer */
+ dvdemux->byte_segment.last_stop += dvdemux->frame_len;
+
+ gst_object_unref (dvdemux);
+
+ return;
+
+ /* ERRORS */
+parse_header_error:
+ {
+ GST_ELEMENT_ERROR (dvdemux, STREAM, DECODE,
+ (NULL), ("Error parsing DV header"));
+ gst_buffer_unref (buffer);
+ ret = GST_FLOW_ERROR;
+ /* will stop the task */
+ goto pause;
+ }
+eos:
+ {
+ GST_LOG_OBJECT (dvdemux, "got eos");
+ gst_dvdemux_push_event (dvdemux, gst_event_new_eos ());
+ /* pause with non-fatal error */
+ ret = GST_FLOW_WRONG_STATE;
+ goto pause;
+ }
+pause:
+ {
+ GST_LOG_OBJECT (dvdemux, "pausing task %d", ret);
+ dvdemux->running = FALSE;
+ gst_pad_pause_task (dvdemux->sinkpad);
+ if (GST_FLOW_IS_FATAL (ret)) {
+ /* for fatal errors we post an error message */
+ GST_ELEMENT_ERROR (dvdemux, STREAM, FAILED,
+ (NULL), ("streaming stopped, reason %s", gst_flow_get_name (ret)));
+ gst_dvdemux_push_event (dvdemux, gst_event_new_eos ());
+ }
+ gst_object_unref (dvdemux);
+ }
+}
+
+static gboolean
+gst_dvdemux_sink_activate_push (GstPad * sinkpad, gboolean active)
+{
+ GstDVDemux *demux = GST_DVDEMUX (gst_pad_get_parent (sinkpad));
+
+ if (active) {
+ demux->seek_handler = gst_dvdemux_handle_push_seek;
+ } else {
+ demux->seek_handler = NULL;
+ }
+ gst_object_unref (demux);
+
+ return TRUE;
+}
+
+static gboolean
+gst_dvdemux_sink_activate_pull (GstPad * sinkpad, gboolean active)
+{
+ GstDVDemux *demux = GST_DVDEMUX (gst_pad_get_parent (sinkpad));
+
+ if (active) {
+ demux->running = TRUE;
+ demux->seek_handler = gst_dvdemux_handle_pull_seek;
+ gst_pad_start_task (sinkpad, (GstTaskFunction) gst_dvdemux_loop, sinkpad);
+ } else {
+ demux->seek_handler = NULL;
+ demux->running = FALSE;
+ gst_pad_stop_task (sinkpad);
+ }
+
+ gst_object_unref (demux);
+
+ return TRUE;
+};
+
+/* decide on push or pull based scheduling */
+static gboolean
+gst_dvdemux_sink_activate (GstPad * sinkpad)
+{
+ gboolean ret;
+
+ if (gst_pad_check_pull_range (sinkpad))
+ ret = gst_pad_activate_pull (sinkpad, TRUE);
+ else
+ ret = gst_pad_activate_push (sinkpad, TRUE);
+
+ return ret;
+};
+
static GstStateChangeReturn
gst_dvdemux_change_state (GstElement * element, GstStateChange transition)
{
GstDVDemux *dvdemux = GST_DVDEMUX (element);
GstStateChangeReturn ret;
-
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
dvdemux->decoder = dv_decoder_new (0, FALSE, FALSE);
dv_set_error_log (dvdemux->decoder, NULL);
- dvdemux->audio_offset = 0;
- dvdemux->video_offset = 0;
- dvdemux->framecount = 0;
- dvdemux->found_header = FALSE;
- dvdemux->frame_len = -1;
- dvdemux->timestamp = 0LL;
- dvdemux->need_segment = FALSE;
- dvdemux->new_media = FALSE;
- dvdemux->framerate_numerator = 0;
- dvdemux->framerate_denominator = 0;
- dvdemux->total_frames = 0;
- dvdemux->height = 0;
- dvdemux->frequency = 0;
- dvdemux->channels = 0;
- dvdemux->wide = FALSE;
- gst_segment_init (&dvdemux->byte_segment, GST_FORMAT_BYTES);
- gst_segment_init (&dvdemux->time_segment, GST_FORMAT_TIME);
+ gst_dvdemux_reset (dvdemux);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
projects / platform / upstream / gst-plugins-good.git / commitdiff