#define RMDEMUX_GUINT32_GET(a) GST_READ_UINT32_BE(a)
#define RMDEMUX_GUINT16_GET(a) GST_READ_UINT16_BE(a)
#define RMDEMUX_FOURCC_GET(a) GST_READ_UINT32_LE(a)
+#define HEADER_SIZE 10
+#define DATA_SIZE 8
typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
struct _GstRMDemuxStream
struct _GstRMDemuxIndex
{
- int unknown;
guint32 offset;
- int timestamp;
- int frame;
-};
-
-enum GstRMDemuxState
-{
- RMDEMUX_STATE_NULL,
- RMDEMUX_STATE_HEADER,
- RMDEMUX_STATE_HEADER_UNKNOWN,
- RMDEMUX_STATE_HEADER_RMF,
- RMDEMUX_STATE_HEADER_PROP,
- RMDEMUX_STATE_HEADER_MDPR,
- RMDEMUX_STATE_HEADER_INDX,
- RMDEMUX_STATE_HEADER_DATA,
- RMDEMUX_STATE_HEADER_CONT,
- RMDEMUX_STATE_HEADER_SEEKING,
- RMDEMUX_STATE_SEEKING,
- RMDEMUX_STATE_DATA_PACKET,
- RMDEMUX_STATE_SEEKING_EOS,
- RMDEMUX_STATE_EOS
-};
-
-enum GstRMDemuxStreamType
-{
- GST_RMDEMUX_STREAM_UNKNOWN,
- GST_RMDEMUX_STREAM_VIDEO,
- GST_RMDEMUX_STREAM_AUDIO,
- GST_RMDEMUX_STREAM_FILEINFO
+ GstClockTime timestamp;
};
static GstElementDetails gst_rmdemux_details = {
static void gst_rmdemux_dispose (GObject * object);
static GstElementStateReturn gst_rmdemux_change_state (GstElement * element);
static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer);
+static void gst_rmdemux_loop (GstPad * pad);
+static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad);
+static gboolean gst_rmdemux_sink_activate_push (GstPad * sinkpad,
+ gboolean active);
+static gboolean gst_rmdemux_sink_activate_pull (GstPad * sinkpad,
+ gboolean active);
static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event);
+static gboolean gst_rmdemux_src_event (GstPad * pad, GstEvent * event);
static gboolean gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
+static const GstQueryType *gst_rmdemux_src_query_types (GstPad * pad);
+static gboolean gst_rmdemux_src_query (GstPad * pad, GstQuery * query);
+static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux, gboolean flush);
static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const void *data,
int length);
(&gst_rmdemux_sink_template), "sink");
gst_pad_set_event_function (rmdemux->sinkpad, gst_rmdemux_sink_event);
gst_pad_set_chain_function (rmdemux->sinkpad, gst_rmdemux_chain);
+ gst_pad_set_activate_function (rmdemux->sinkpad, gst_rmdemux_sink_activate);
+ gst_pad_set_activatepull_function (rmdemux->sinkpad,
+ gst_rmdemux_sink_activate_pull);
+ gst_pad_set_activatepush_function (rmdemux->sinkpad,
+ gst_rmdemux_sink_activate_push);
+
gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
return ret;
}
+static gboolean
+gst_rmdemux_src_event (GstPad * pad, GstEvent * event)
+{
+ gboolean ret = TRUE;
+
+ GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
+
+ GST_LOG_OBJECT (rmdemux, "handling src event");
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:{
+ gboolean running;
+ gboolean flush;
+ GstFormat format;
+ GstSeekFlags flags;
+ GstSeekType cur_type, stop_type;
+ gint64 cur, stop;
+
+ /* can't seek if we are not seekable, FIXME could pass the
+ * seek query upstream after converting it to bytes using
+ * the average bitrate of the stream. */
+ if (!rmdemux->seekable) {
+ ret = FALSE;
+ GST_DEBUG ("seek on non seekable stream");
+ goto done_unref;
+ }
+ gst_event_parse_seek (event, NULL, &format, &flags,
+ &cur_type, &cur, &stop_type, &stop);
+
+ /* we can only seek on time */
+ if (format != GST_FORMAT_TIME) {
+ ret = FALSE;
+ GST_DEBUG ("can only seek on TIME");
+ goto done_unref;
+ }
+ rmdemux->segment_start = cur;
+ rmdemux->segment_stop = stop;
+ rmdemux->segment_play = !!(flags & GST_SEEK_FLAG_SEGMENT);
+ flush = !!(flags & GST_SEEK_FLAG_FLUSH);
+ gst_event_unref (event);
+
+ GST_DEBUG ("segment positions set to %" GST_TIME_FORMAT "-%"
+ GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment_start),
+ GST_TIME_ARGS (rmdemux->segment_stop));
+
+ /* check if we can do the seek now */
+ GST_LOCK (rmdemux);
+ running = rmdemux->running;
+ GST_UNLOCK (rmdemux);
+
+ /* now do the seek */
+ if (running) {
+ ret = gst_rmdemux_perform_seek (rmdemux, flush);
+ } else
+ ret = TRUE;
+ break;
+ }
+ default:
+ ret = gst_pad_event_default (rmdemux->sinkpad, event);
+ break;
+ }
+
+ return ret;
+
+done_unref:
+ GST_DEBUG ("error handling event");
+ gst_event_unref (event);
+ return ret;
+}
+
+static gboolean
+gst_rmdemux_perform_seek (GstRMDemux * rmdemux, gboolean flush)
+{
+ /* nothing configured, play complete file */
+ if (rmdemux->segment_start == GST_CLOCK_TIME_NONE)
+ rmdemux->segment_start = 0;
+ if (rmdemux->segment_stop == GST_CLOCK_TIME_NONE)
+ rmdemux->segment_stop = rmdemux->duration;
+
+ rmdemux->segment_start = CLAMP (rmdemux->segment_start, 0, rmdemux->duration);
+ rmdemux->segment_stop = CLAMP (rmdemux->segment_stop, 0, rmdemux->duration);
+
+ /* first step is to unlock the streaming thread if it is
+ * blocked in a chain call, we do this by starting the flush. because
+ * we cannot yet hold any streaming lock, we have to protect the chains
+ * with their own lock. */
+ if (flush) {
+ gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
+ gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
+ } else {
+ gst_pad_pause_task (rmdemux->sinkpad);
+ }
+
+ /* now grab the stream lock so that streaming cannot continue, for
+ * non flushing seeks when the element is in PAUSED this could block
+ * forever. */
+ GST_STREAM_LOCK (rmdemux->sinkpad);
+
+ /* we need to stop flushing on the srcpad as we're going to use it
+ * next. We can do this as we have the STREAM lock now. */
+ gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop ());
+
+ /* Find the new offset */
+ /* Get the video stream */
+ {
+ int i, n;
+
+ rmdemux->offset = 0;
+ GstClockTime tmp_time = 0;
+
+ /* Find the last offset which occurs after the seek time */
+ for (n = 0; n < rmdemux->n_streams; n++) {
+ GstRMDemuxStream *stream;
+
+ stream = rmdemux->streams[n];
+
+ for (i = 0; i < stream->index_length; i++) {
+ if (stream->index[i].timestamp > rmdemux->segment_start) {
+ if (stream->index[i].offset > rmdemux->offset) {
+ rmdemux->offset = stream->index[i].offset;
+ tmp_time = stream->index[i].timestamp;
+ }
+ break;
+ }
+ }
+ }
+
+ GST_DEBUG_OBJECT (rmdemux, "seek offset to %" GST_TIME_FORMAT " at 0x%x",
+ GST_TIME_ARGS (tmp_time), rmdemux->offset);
+ }
+
+ /* now we have a new position, prepare for streaming again */
+ {
+ GstEvent *event;
+
+ /* Reset the demuxer state */
+ rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
+ gst_adapter_clear (rmdemux->adapter);
+
+ if (flush)
+ gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop ());
+
+ /* create the discont event we are going to send out */
+ event = gst_event_new_newsegment (1.0,
+ GST_FORMAT_TIME, (gint64) rmdemux->segment_start,
+ (gint64) rmdemux->segment_stop, 0);
+
+ gst_rmdemux_send_event (rmdemux, event);
+
+ /* notify start of new segment */
+ if (rmdemux->segment_play) {
+ gst_element_post_message (GST_ELEMENT (rmdemux),
+ gst_message_new_segment_start (GST_OBJECT (rmdemux),
+ rmdemux->segment_start));
+ }
+ /* restart our task since it might have been stopped when we did the
+ * flush. */
+ gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
+ rmdemux->sinkpad);
+ }
+
+ /* streaming can continue now */
+ GST_STREAM_UNLOCK (rmdemux->sinkpad);
+
+ return TRUE;
+
+//seek_error:
+// GST_DEBUG_OBJECT (rmdemux, "got a seek error");
+// GST_STREAM_UNLOCK (rmdemux->sinkpad);
+//
+// return FALSE;
+}
+
+
+static gboolean
+gst_rmdemux_src_query (GstPad * pad, GstQuery * query)
+{
+ gboolean res = TRUE;
+ GstRMDemux *rmdemux;
+
+ rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_POSITION:
+ GST_DEBUG_OBJECT (rmdemux, "src_query position");
+ gst_query_set_position (query, GST_FORMAT_TIME, -1, rmdemux->duration);
+ break;
+ case GST_QUERY_CONVERT:
+ res = FALSE;
+ break;
+ default:
+ res = FALSE;
+ break;
+ }
+
+ return res;
+}
+
+static const GstQueryType *
+gst_rmdemux_src_query_types (GstPad * pad)
+{
+ static const GstQueryType query_types[] = {
+ GST_QUERY_POSITION,
+ 0
+ };
+
+ return query_types;
+}
+
static GstElementStateReturn
gst_rmdemux_change_state (GstElement * element)
{
case GST_STATE_READY_TO_PAUSED:
rmdemux->state = RMDEMUX_STATE_HEADER;
rmdemux->have_pads = FALSE;
+ rmdemux->packet_number = 0;
+ rmdemux->segment_start = GST_CLOCK_TIME_NONE;
+ rmdemux->segment_stop = GST_CLOCK_TIME_NONE;
+ rmdemux->segment_play = FALSE;
+ rmdemux->running = FALSE;
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
break;
case GST_STATE_PAUSED_TO_READY:
gst_adapter_clear (rmdemux->adapter);
+ GST_LOCK (rmdemux);
+ rmdemux->running = FALSE;
+ GST_UNLOCK (rmdemux);
break;
case GST_STATE_READY_TO_NULL:
break;
return gst_caps_new_empty ();
}
+/* this function is called when the pad is activated and should start
+ * processing data.
+ *
+ * We check if we can do random access to decide if we work push or
+ * pull based.
+ */
+static gboolean
+gst_rmdemux_sink_activate (GstPad * sinkpad)
+{
+ if (gst_pad_check_pull_range (sinkpad)) {
+ return gst_pad_activate_pull (sinkpad, TRUE);
+ } else {
+ return gst_pad_activate_push (sinkpad, TRUE);
+ }
+}
+
+/* this function gets called when we activate ourselves in push mode.
+ * We cannot seek (ourselves) in the stream */
+static gboolean
+gst_rmdemux_sink_activate_push (GstPad * pad, gboolean active)
+{
+ GstRMDemux *rmdemux;
+
+ rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
+
+ GST_DEBUG_OBJECT (rmdemux, "activate_push");
+
+ rmdemux->seekable = FALSE;
+
+ return TRUE;
+}
+
+/* this function gets called when we activate ourselves in pull mode.
+ * We can perform random access to the resource and we start a task
+ * to start reading */
+static gboolean
+gst_rmdemux_sink_activate_pull (GstPad * pad, gboolean active)
+{
+ GstRMDemux *rmdemux;
+
+ rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
+
+ GST_DEBUG_OBJECT (rmdemux, "activate_pull");
+
+ if (active) {
+ rmdemux->seekable = TRUE;
+ rmdemux->offset = 0;
+ rmdemux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
+ rmdemux->data_offset = G_MAXUINT;
+
+ return gst_pad_start_task (pad, (GstTaskFunction) gst_rmdemux_loop, pad);
+ } else {
+ return gst_pad_stop_task (pad);
+ }
+}
+
+/* random access mode - just pass over to our chain function */
+static void
+gst_rmdemux_loop (GstPad * pad)
+{
+ GstRMDemux *rmdemux;
+ GstBuffer *buffer;
+ GstFlowReturn ret;
+ guint size;
+
+ rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
+
+ GST_DEBUG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
+ rmdemux->loop_state, rmdemux->offset);
+
+ switch (rmdemux->state) {
+ case RMDEMUX_STATE_HEADER:
+ size = HEADER_SIZE;
+ break;
+ case RMDEMUX_STATE_HEADER_DATA:
+ size = DATA_SIZE;
+ break;
+ case RMDEMUX_STATE_DATA_PACKET:
+ size = rmdemux->avg_packet_size;
+ break;
+ default:
+ size = rmdemux->size;
+ }
+
+ ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
+ if (ret != GST_FLOW_OK)
+ goto need_pause;
+
+ size = GST_BUFFER_SIZE (buffer);
+
+ /* EOS */
+ if (size < 1)
+ goto eos;
+
+ /* Defer to the chain function */
+ if (gst_rmdemux_chain (pad, buffer) != GST_FLOW_OK)
+ goto need_pause;
+
+ rmdemux->offset += size;
+
+ switch (rmdemux->loop_state) {
+ case RMDEMUX_LOOP_STATE_HEADER:
+ if (rmdemux->offset >= rmdemux->data_offset) {
+ /* It's the end of the header */
+ rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
+ rmdemux->offset = rmdemux->index_offset;
+ }
+ break;
+ case RMDEMUX_LOOP_STATE_INDEX:
+ if (rmdemux->state == RMDEMUX_STATE_HEADER) {
+ if (rmdemux->index_offset == 0) {
+ /* We've read the last index */
+ rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
+ rmdemux->offset = rmdemux->data_offset;
+ GST_LOCK (rmdemux);
+ rmdemux->running = TRUE;
+ GST_UNLOCK (rmdemux);
+ } else {
+ /* Get the next index */
+ rmdemux->offset = rmdemux->index_offset;
+ }
+ }
+ break;
+ case RMDEMUX_LOOP_STATE_DATA:
+ break;
+ }
+
+ return;
+
+need_pause:
+ {
+ GST_LOG_OBJECT (rmdemux, "pausing task");
+ gst_pad_pause_task (pad);
+ return;
+ }
+eos:
+ {
+ int n;
+
+ GST_LOG_OBJECT (rmdemux, "pushing eos");
+ for (n = 0; n < rmdemux->n_streams; n++) {
+ if (rmdemux->streams[n] != NULL && rmdemux->streams[n]->pad == pad) {
+ gst_pad_push_event (rmdemux->streams[n]->pad, gst_event_new_eos ());
+ }
+ }
+
+ gst_pad_pause_task (pad);
+ return;
+ }
+}
+
static GstFlowReturn
gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
{
GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
+ GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
+ GST_BUFFER_SIZE (buffer));
+
GST_STREAM_LOCK (pad);
gst_adapter_push (rmdemux->adapter, buffer);
while (TRUE) {
+ GST_LOG_OBJECT (rmdemux, "looping in chain");
switch (rmdemux->state) {
case RMDEMUX_STATE_HEADER:
{
- if (gst_adapter_available (rmdemux->adapter) < 10)
+ if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
goto unlock;
- data = gst_adapter_peek (rmdemux->adapter, 10);
+ data = gst_adapter_peek (rmdemux->adapter, HEADER_SIZE);
rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
- rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - 10;
+ rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
GST_LOG_OBJECT (rmdemux, "header found with object_id="
}
/* The actual header is only 8 bytes */
- rmdemux->size = 8;
+ rmdemux->size = DATA_SIZE;
+ GST_DEBUG_OBJECT (rmdemux, "data available %d",
+ gst_adapter_available (rmdemux->adapter));
if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
goto unlock;
gst_adapter_flush (rmdemux->adapter, rmdemux->size);
+ rmdemux->packet_number++;
+ GST_DEBUG_OBJECT (rmdemux, "packet_number: %d", rmdemux->packet_number);
rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
break;
}
} else {
/* Stream done */
gst_adapter_flush (rmdemux->adapter, 2);
- rmdemux->state = RMDEMUX_STATE_HEADER;
+
+ if (rmdemux->packet_number == rmdemux->num_packets)
+ rmdemux->state = RMDEMUX_STATE_EOS;
+ else
+ rmdemux->state = RMDEMUX_STATE_HEADER;
}
+ break;
}
+ case RMDEMUX_STATE_EOS:
+ GST_WARNING_OBJECT (rmdemux, "FIXME: Handle EOS.");
+ goto unlock;
+ default:
+ GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
+ goto unlock;
}
}
GstRMDemuxStream *stream;
stream = rmdemux->streams[i];
+
gst_event_ref (event);
gst_pad_push_event (stream->pad, event);
}
gst_pad_set_caps (stream->pad, stream->caps);
gst_caps_unref (stream->caps);
- gst_pad_set_getcaps_function (stream->pad, gst_rmdemux_src_getcaps);
+ gst_pad_set_getcaps_function (stream->pad,
+ GST_DEBUG_FUNCPTR (gst_rmdemux_src_getcaps));
+ gst_pad_set_event_function (stream->pad,
+ GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
+ gst_pad_set_query_type_function (stream->pad,
+ GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
+ gst_pad_set_query_function (stream->pad,
+ GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
GST_DEBUG_OBJECT (rmdemux, "adding pad %p to rmdemux %p", stream->pad,
rmdemux);
GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
GST_LOG_OBJECT (rmdemux, "max packet size: %d",
RMDEMUX_GUINT32_GET (data + 8));
- GST_LOG_OBJECT (rmdemux, "avg packet size: %d",
- RMDEMUX_GUINT32_GET (data + 12));
- GST_LOG_OBJECT (rmdemux, "number of packets: %d",
- RMDEMUX_GUINT32_GET (data + 16));
+ rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
+ GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
+ rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
+ GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
- rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20);
+ rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_SECOND / 1000;
GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
+ rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
- RMDEMUX_GUINT32_GET (data + 28));
+ rmdemux->index_offset);
+ rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
- RMDEMUX_GUINT32_GET (data + 32));
+ rmdemux->data_offset);
GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
}
stream = g_new0 (GstRMDemuxStream, 1);
stream->id = RMDEMUX_GUINT16_GET (data);
+ stream->index = NULL;
GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
offset = 30;
n = RMDEMUX_GUINT32_GET (data);
id = RMDEMUX_GUINT16_GET (data + 4);
+ rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
+
+ GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d", n, id);
stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
if (stream == NULL)
stream->index = index;
stream->index_length = n;
- offset = 8;
+ offset = 10;
for (i = 0; i < n; i++) {
- index[i].unknown = RMDEMUX_GUINT16_GET (data + offset + 0);
- index[i].offset = RMDEMUX_GUINT32_GET (data + offset + 2);
- index[i].timestamp = RMDEMUX_GUINT32_GET (data + offset + 6);
- index[i].frame = RMDEMUX_GUINT32_GET (data + offset + 10);
+ index[i].timestamp = RMDEMUX_GUINT32_GET (data + offset + 2) * GST_MSECOND;
+ index[i].offset = RMDEMUX_GUINT32_GET (data + offset + 6);
+
+ GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f at offset=%x",
+ (float) index[i].timestamp / 1000.0, index[i].offset);
offset += 14;
}
+ GST_DEBUG_OBJECT (rmdemux, "finished reading index and offset = %d", offset);
}
static void
projects / platform / upstream / gstreamer.git / commitdiff