static void
gst_wavpack_parse_finalize (GObject * object)
{
gst_wavpack_parse_reset (GST_WAVPACK_PARSE (object));
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstStateChangeReturn
gst_wavpack_parse_change_state (GstElement * element, GstStateChange transition)
{
GstWavpackParse *wvparse = GST_WAVPACK_PARSE (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_segment_init (&wvparse->segment, GST_FORMAT_DEFAULT);
wvparse->segment.last_stop = 0;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_wavpack_parse_reset (wvparse);
break;
default:
break;
}
return ret;
}
static GstFlowReturn
gst_wavpack_parse_chain (GstPad * pad, GstBuffer * buf)
{
GstWavpackParse *wvparse = GST_WAVPACK_PARSE (GST_PAD_PARENT (pad));
GstFlowReturn ret = GST_FLOW_OK;
WavpackHeader wph;
const guint8 *tmp_buf;
if (!wvparse->adapter) {
wvparse->adapter = gst_adapter_new ();
}
if (GST_BUFFER_IS_DISCONT (buf)) {
gst_adapter_clear (wvparse->adapter);
wvparse->discont = TRUE;
}
gst_adapter_push (wvparse->adapter, buf);
if (gst_adapter_available (wvparse->adapter) < sizeof (WavpackHeader))
return ret;
if (!gst_wavpack_parse_resync_adapter (wvparse->adapter))
return ret;
tmp_buf = gst_adapter_peek (wvparse->adapter, sizeof (WavpackHeader));
gst_wavpack_read_header (&wph, (guint8 *) tmp_buf);
while (gst_adapter_available (wvparse->adapter) >= wph.ckSize + 4 * 1 + 4) {
GstBuffer *outbuf =
gst_adapter_take_buffer (wvparse->adapter, wph.ckSize + 4 * 1 + 4);
if (!outbuf)
return GST_FLOW_ERROR;
if (wvparse->srcpad == NULL) {
if (!gst_wavpack_parse_create_src_pad (wvparse, outbuf, &wph)) {
GST_ERROR_OBJECT (wvparse, "Failed to create src pad");
ret = GST_FLOW_ERROR;
break;
}
}
ret = gst_wavpack_parse_push_buffer (wvparse, outbuf, &wph);
if (ret != GST_FLOW_OK)
break;
if (gst_adapter_available (wvparse->adapter) >= sizeof (WavpackHeader)) {
tmp_buf = gst_adapter_peek (wvparse->adapter, sizeof (WavpackHeader));
if (!gst_wavpack_parse_resync_adapter (wvparse->adapter))
break;
gst_wavpack_read_header (&wph, (guint8 *) tmp_buf);
}
}
return ret;
}
static gboolean
gst_wavpack_parse_sink_event (GstPad * pad, GstEvent * event)
{
GstWavpackParse *parse;
gboolean ret = TRUE;
parse = GST_WAVPACK_PARSE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:{
if (parse->adapter) {
gst_adapter_clear (parse->adapter);
}
if (parse->pending_buffer) {
gst_buffer_unref (parse->pending_buffer);
parse->pending_buffer = NULL;
parse->pending_offset = 0;
}
ret = gst_pad_push_event (parse->srcpad, event);
break;
}
case GST_EVENT_NEWSEGMENT:{
parse->need_newsegment = TRUE;
gst_event_unref (event);
ret = TRUE;
break;
}
case GST_EVENT_EOS:{
if (parse->adapter) {
/* remove all bytes that are left in the adapter after EOS. They can't
* be a complete Wavpack block and we can't do anything with them */
gst_adapter_clear (parse->adapter);
}
if (parse->pending_buffer) {
gst_buffer_unref (parse->pending_buffer);
parse->pending_buffer = NULL;
parse->pending_offset = 0;
}
ret = gst_pad_push_event (parse->srcpad, event);
break;
}
default:{
/* stream lock is recursive, should be fine for all events */
GST_PAD_STREAM_LOCK (pad);
if (parse->srcpad == NULL) {
parse->queued_events = g_list_append (parse->queued_events, event);
} else {
ret = gst_pad_push_event (parse->srcpad, event);
}
GST_PAD_STREAM_UNLOCK (pad);
}
}
gst_object_unref (parse);
return ret;
}
static gboolean
gst_wavpack_parse_src_event (GstPad * pad, GstEvent * event)
{
GstWavpackParse *parse;
gboolean ret;
parse = GST_WAVPACK_PARSE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
ret = gst_wavpack_parse_handle_seek_event (parse, event);
break;
default:
ret = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (parse);
return ret;
}
static gboolean
gst_wavpack_parse_src_query (GstPad * pad, GstQuery * query)
{
GstWavpackParse *parse = GST_WAVPACK_PARSE (gst_pad_get_parent (pad));
GstFormat format;
gboolean ret = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:{
gint64 cur;
guint rate;
GST_OBJECT_LOCK (parse);
cur = parse->segment.last_stop;
rate = parse->samplerate;
GST_OBJECT_UNLOCK (parse);
if (rate == 0) {
GST_DEBUG_OBJECT (parse, "haven't read header yet");
break;
}
gst_query_parse_position (query, &format, NULL);
switch (format) {
case GST_FORMAT_TIME:
cur = gst_util_uint64_scale_int (cur, GST_SECOND, rate);
gst_query_set_position (query, GST_FORMAT_TIME, cur);
ret = TRUE;
break;
case GST_FORMAT_DEFAULT:
gst_query_set_position (query, GST_FORMAT_DEFAULT, cur);
ret = TRUE;
break;
default:
GST_DEBUG_OBJECT (parse, "cannot handle position query in "
"%s format. Forwarding upstream.", gst_format_get_name (format));
ret = gst_pad_query_default (pad, query);
break;
}
break;
}
case GST_QUERY_DURATION:{
gint64 len;
guint rate;
GST_OBJECT_LOCK (parse);
rate = parse->samplerate;
len = parse->total_samples;
GST_OBJECT_UNLOCK (parse);
if (rate == 0) {
GST_DEBUG_OBJECT (parse, "haven't read header yet");
break;
}
gst_query_parse_duration (query, &format, NULL);
switch (format) {
case GST_FORMAT_TIME:
if (len != G_GINT64_CONSTANT (-1))
len = gst_util_uint64_scale_int (len, GST_SECOND, rate);
gst_query_set_duration (query, GST_FORMAT_TIME, len);
ret = TRUE;
break;
case GST_FORMAT_DEFAULT:
gst_query_set_duration (query, GST_FORMAT_DEFAULT, len);
ret = TRUE;
break;
default:
GST_DEBUG_OBJECT (parse, "cannot handle duration query in "
"%s format. Forwarding upstream.", gst_format_get_name (format));
ret = gst_pad_query_default (pad, query);
break;
}
break;
}
case GST_QUERY_SEEKING:{
gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
if (format == GST_FORMAT_TIME || format == GST_FORMAT_DEFAULT) {
gboolean seekable;
gint64 duration = -1;
/* only fails if we didn't read the headers yet and can't say
* anything about our seeking capabilities */
if (!gst_pad_query_duration (pad, &format, &duration))
break;
/* can't seek in streaming mode yet */
GST_OBJECT_LOCK (parse);
seekable = (parse->adapter == NULL);
GST_OBJECT_UNLOCK (parse);
gst_query_set_seeking (query, format, seekable, 0, duration);
ret = TRUE;
}
break;
}
default:{
ret = gst_pad_query_default (pad, query);
break;
}
}
gst_object_unref (parse);
return ret;
}
static void
gst_wavpack_parse_loop (GstElement * element)
{
GstWavpackParse *parse = GST_WAVPACK_PARSE (element);
GstFlowReturn flow_ret;
WavpackHeader header = { {0,}, 0, };
GstBuffer *buf = NULL;
flow_ret = gst_wavpack_parse_resync_loop (parse, &header);
if (flow_ret != GST_FLOW_OK)
goto pause;
GST_LOG_OBJECT (parse, "Read header at offset %" G_GINT64_FORMAT
": chunk size = %u+8", parse->current_offset, header.ckSize);
buf = gst_wavpack_parse_pull_buffer (parse, parse->current_offset,
header.ckSize + 8, &flow_ret);
if (flow_ret != GST_FLOW_OK)
goto pause;
if (parse->srcpad == NULL) {
if (!gst_wavpack_parse_create_src_pad (parse, buf, &header)) {
GST_ERROR_OBJECT (parse, "Failed to create src pad");
flow_ret = GST_FLOW_ERROR;
goto pause;
}
}
if (header.flags & INITIAL_BLOCK)
gst_wavpack_parse_index_append_entry (parse, parse->current_offset,
header.block_index, header.block_samples);
flow_ret = gst_wavpack_parse_push_buffer (parse, buf, &header);
if (flow_ret != GST_FLOW_OK)
goto pause;
return;
pause:
{
const gchar *reason = gst_flow_get_name (flow_ret);
GST_LOG_OBJECT (parse, "pausing task, reason %s", reason);
gst_pad_pause_task (parse->sinkpad);
if (GST_FLOW_IS_FATAL (flow_ret) || flow_ret == GST_FLOW_NOT_LINKED) {
if (flow_ret == GST_FLOW_UNEXPECTED && parse->srcpad) {
if (parse->segment.flags & GST_SEEK_FLAG_SEGMENT) {
GstClockTime stop;
GST_LOG_OBJECT (parse, "Sending segment done");
if ((stop = parse->segment.stop) == -1)
stop = parse->segment.duration;
gst_element_post_message (GST_ELEMENT_CAST (parse),
gst_message_new_segment_done (GST_OBJECT_CAST (parse),
parse->segment.format, stop));
} else {
GST_LOG_OBJECT (parse, "Sending EOS, at end of stream");
gst_pad_push_event (parse->srcpad, gst_event_new_eos ());
}
} else {
GST_ELEMENT_ERROR (parse, STREAM, FAILED,
(_("Internal data stream error.")),
("stream stopped, reason %s", reason));
if (parse->srcpad)
gst_pad_push_event (parse->srcpad, gst_event_new_eos ());
}
}
return;
}
}
