static GstStateChangeReturn
gst_hls_demux_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstHLSDemux *demux = GST_HLS_DEMUX (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_hls_demux_reset (GST_ADAPTIVE_DEMUX_CAST (demux));
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_hls_demux_reset (GST_ADAPTIVE_DEMUX_CAST (demux));
break;
default:
break;
}
return ret;
}
static void
gst_hls_demux_dispose (GObject * obj)
{
GstHLSDemux *demux = GST_HLS_DEMUX (obj);
g_cond_free (demux->fetcher_cond);
g_mutex_free (demux->fetcher_lock);
g_cond_free (demux->thread_cond);
g_mutex_free (demux->thread_lock);
if (GST_TASK_STATE (demux->task) != GST_TASK_STOPPED) {
gst_task_stop (demux->task);
gst_task_join (demux->task);
}
gst_object_unref (demux->task);
g_static_rec_mutex_free (&demux->task_lock);
gst_object_unref (demux->fetcher_bus);
gst_object_unref (demux->fetcherpad);
gst_hls_demux_reset (demux, TRUE);
gst_object_unref (demux->download);
G_OBJECT_CLASS (parent_class)->dispose (obj);
}
static GstStateChangeReturn
gst_hls_demux_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstHLSDemux *demux = GST_HLS_DEMUX (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
gst_hls_demux_reset (demux, FALSE);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
demux->cancelled = TRUE;
gst_hls_demux_stop (demux);
break;
default:
break;
}
return ret;
}
static gboolean
gst_hls_demux_sink_event (GstPad * pad, GstEvent * event)
{
GstHLSDemux *demux = GST_HLS_DEMUX (gst_pad_get_parent (pad));
GstQuery *query;
gboolean ret;
gchar *uri;
switch (event->type) {
case GST_EVENT_EOS:{
gchar *playlist;
if (demux->playlist == NULL) {
GST_WARNING_OBJECT (demux, "Received EOS without a playlist.");
break;
}
GST_DEBUG_OBJECT (demux,
"Got EOS on the sink pad: main playlist fetched");
query = gst_query_new_uri ();
ret = gst_pad_peer_query (demux->sinkpad, query);
if (ret) {
gst_query_parse_uri (query, &uri);
gst_hls_demux_set_location (demux, uri);
g_free (uri);
}
gst_query_unref (query);
playlist = gst_hls_src_buf_to_utf8_playlist ((gchar *)
GST_BUFFER_DATA (demux->playlist), GST_BUFFER_SIZE (demux->playlist));
gst_buffer_unref (demux->playlist);
if (playlist == NULL) {
GST_WARNING_OBJECT (demux, "Error validating first playlist.");
} else if (!gst_m3u8_client_update (demux->client, playlist)) {
/* In most cases, this will happen if we set a wrong url in the
* source element and we have received the 404 HTML response instead of
* the playlist */
GST_ELEMENT_ERROR (demux, STREAM, DECODE, ("Invalid playlist."), NULL);
return FALSE;
}
if (!ret && gst_m3u8_client_is_live (demux->client)) {
GST_ELEMENT_ERROR (demux, RESOURCE, NOT_FOUND,
("Failed querying the playlist uri, "
"required for live sources."), NULL);
return FALSE;
}
gst_task_start (demux->task);
gst_event_unref (event);
return TRUE;
}
default:
break;
}
return gst_pad_event_default (pad, event);
}
static gboolean
gst_hls_demux_src_query (GstPad * pad, GstQuery * query)
{
GstHLSDemux *hlsdemux;
gboolean ret = FALSE;
if (query == NULL)
return FALSE;
hlsdemux = GST_HLS_DEMUX (gst_pad_get_element_private (pad));
switch (query->type) {
case GST_QUERY_DURATION:{
GstClockTime duration;
GstFormat fmt;
gst_query_parse_duration (query, &fmt, NULL);
if (fmt == GST_FORMAT_TIME) {
duration = gst_m3u8_client_get_duration (hlsdemux->client);
if (GST_CLOCK_TIME_IS_VALID (duration) && duration > 0) {
gst_query_set_duration (query, GST_FORMAT_TIME, duration);
ret = TRUE;
}
}
break;
}
case GST_QUERY_URI:
if (hlsdemux->client) {
/* FIXME: Do we answer with the variant playlist, with the current
* playlist or the the uri of the least downlowaded fragment? */
gst_query_set_uri (query, hlsdemux->client->current->uri);
ret = TRUE;
}
break;
case GST_QUERY_SEEKING:{
GstFormat fmt;
gint stop = -1;
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
if (fmt == GST_FORMAT_TIME) {
GstClockTime duration;
duration = gst_m3u8_client_get_duration (hlsdemux->client);
if (GST_CLOCK_TIME_IS_VALID (duration) && duration > 0)
stop = duration;
}
gst_query_set_seeking (query, fmt, FALSE, 0, stop);
ret = TRUE;
break;
}
default:
/* Don't fordward queries upstream because of the special nature of this
* "demuxer", which relies on the upstream element only to be fed with the
* first playlist */
break;
}
return ret;
}
static void
gst_hls_demux_dispose (GObject * obj)
{
GstHLSDemux *demux = GST_HLS_DEMUX (obj);
gst_hls_demux_reset (GST_ADAPTIVE_DEMUX_CAST (demux));
gst_m3u8_client_free (demux->client);
G_OBJECT_CLASS (parent_class)->dispose (obj);
}
static void
gst_hls_demux_finalize (GObject * obj)
{
GstHLSDemux *demux = GST_HLS_DEMUX (obj);
gst_hls_demux_reset (GST_ADAPTIVE_DEMUX_CAST (demux));
g_object_unref (demux->pending_encrypted_data);
gst_m3u8_client_free (demux->client);
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static GstFlowReturn
gst_hls_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstHLSDemux *demux = GST_HLS_DEMUX (parent);
if (demux->playlist == NULL)
demux->playlist = buf;
else
demux->playlist = gst_buffer_append (demux->playlist, buf);
return GST_FLOW_OK;
}
static GstBusSyncReply
gst_hls_demux_fetcher_bus_handler (GstBus * bus,
GstMessage * message, gpointer data)
{
GstHLSDemux *demux = GST_HLS_DEMUX (data);
if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ERROR) {
demux->fetcher_error = TRUE;
g_cond_broadcast (demux->fetcher_cond);
}
gst_message_unref (message);
return GST_BUS_DROP;
}
static GstFlowReturn
gst_hls_demux_chain (GstPad * pad, GstBuffer * buf)
{
GstHLSDemux *demux = GST_HLS_DEMUX (gst_pad_get_parent (pad));
if (demux->playlist == NULL)
demux->playlist = buf;
else
demux->playlist = gst_buffer_join (demux->playlist, buf);
gst_object_unref (demux);
return GST_FLOW_OK;
}
static void
gst_hls_demux_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstHLSDemux *demux = GST_HLS_DEMUX (object);
switch (prop_id) {
case PROP_FRAGMENTS_CACHE:
g_value_set_uint (value, demux->fragments_cache);
break;
case PROP_BITRATE_SWITCH_TOLERANCE:
g_value_set_float (value, demux->bitrate_switch_tol);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_hls_demux_fetcher_sink_event (GstPad * pad, GstEvent * event)
{
GstHLSDemux *demux = GST_HLS_DEMUX (gst_pad_get_element_private (pad));
switch (event->type) {
case GST_EVENT_EOS:{
GST_DEBUG_OBJECT (demux, "Got EOS on the fetcher pad");
/* signal we have fetched the URI */
if (!demux->cancelled)
g_cond_broadcast (demux->fetcher_cond);
}
default:
break;
}
gst_event_unref (event);
return FALSE;
}
static void
gst_hls_demux_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstHLSDemux *demux = GST_HLS_DEMUX (object);
switch (prop_id) {
case PROP_FRAGMENTS_CACHE:
g_value_set_uint (value, demux->fragments_cache);
break;
case PROP_BITRATE_LIMIT:
g_value_set_float (value, demux->bitrate_limit);
break;
case PROP_CONNECTION_SPEED:
g_value_set_uint (value, demux->connection_speed / 1000);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_hls_demux_dispose (GObject * obj)
{
GstHLSDemux *demux = GST_HLS_DEMUX (obj);
if (demux->stream_task) {
if (GST_TASK_STATE (demux->stream_task) != GST_TASK_STOPPED) {
GST_DEBUG_OBJECT (demux, "Leaving streaming task");
gst_task_stop (demux->stream_task);
gst_task_join (demux->stream_task);
}
gst_object_unref (demux->stream_task);
g_rec_mutex_clear (&demux->stream_lock);
demux->stream_task = NULL;
}
if (demux->updates_task) {
if (GST_TASK_STATE (demux->updates_task) != GST_TASK_STOPPED) {
GST_DEBUG_OBJECT (demux, "Leaving updates task");
gst_task_stop (demux->updates_task);
gst_task_join (demux->updates_task);
}
gst_object_unref (demux->updates_task);
g_mutex_clear (&demux->updates_timed_lock);
g_rec_mutex_clear (&demux->updates_lock);
demux->updates_task = NULL;
}
if (demux->downloader != NULL) {
g_object_unref (demux->downloader);
demux->downloader = NULL;
}
gst_hls_demux_reset (demux, TRUE);
g_queue_free (demux->queue);
G_OBJECT_CLASS (parent_class)->dispose (obj);
}
static GstFlowReturn
gst_hls_demux_fetcher_chain (GstPad * pad, GstBuffer * buf)
{
GstHLSDemux *demux = GST_HLS_DEMUX (gst_pad_get_element_private (pad));
/* The source element can be an http source element. In case we get a 404,
* the html response will be sent downstream and the adapter
* will not be null, which might make us think that the request proceed
* successfully. But it will also post an error message in the bus that
* is handled synchronously and that will set demux->fetcher_error to TRUE,
* which is used to discard this buffer with the html response. */
if (demux->fetcher_error) {
goto done;
}
gst_adapter_push (demux->download, buf);
done:
{
return GST_FLOW_OK;
}
}
static GstStateChangeReturn
gst_hls_demux_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstHLSDemux *demux = GST_HLS_DEMUX (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_hls_demux_reset (demux, FALSE);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
/* Start the streaming loop in paused only if we already received
the main playlist. It might have been stopped if we were in PAUSED
state and we filled our queue with enough cached fragments
*/
if (gst_m3u8_client_get_uri (demux->client)[0] != '\0')
gst_hls_demux_start_update (demux);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
gst_hls_demux_stop_update (demux);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
demux->cancelled = TRUE;
gst_hls_demux_stop (demux);
gst_task_join (demux->task);
gst_hls_demux_reset (demux, FALSE);
break;
default:
break;
}
return ret;
}
static gboolean
gst_hls_demux_src_event (GstPad * pad, GstEvent * event)
{
GstHLSDemux *demux;
demux = GST_HLS_DEMUX (gst_pad_get_element_private (pad));
switch (event->type) {
case GST_EVENT_SEEK:
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
GList *walk;
gint current_pos;
gint current_sequence;
gint target_second;
GstM3U8MediaFile *file;
GST_INFO_OBJECT (demux, "Received GST_EVENT_SEEK");
if (gst_m3u8_client_is_live (demux->client)) {
GST_WARNING_OBJECT (demux, "Received seek event for live stream");
return FALSE;
}
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME)
return FALSE;
GST_DEBUG_OBJECT (demux, "seek event, rate: %f start: %" GST_TIME_FORMAT
" stop: %" GST_TIME_FORMAT, rate, GST_TIME_ARGS (start),
GST_TIME_ARGS (stop));
file = GST_M3U8_MEDIA_FILE (demux->client->current->files->data);
current_sequence = file->sequence;
current_pos = 0;
target_second = start / GST_SECOND;
GST_DEBUG_OBJECT (demux, "Target seek to %d", target_second);
for (walk = demux->client->current->files; walk; walk = walk->next) {
file = walk->data;
current_sequence = file->sequence;
if (current_pos <= target_second
&& target_second < current_pos + file->duration) {
break;
}
current_pos += file->duration;
}
if (walk == NULL) {
GST_WARNING_OBJECT (demux, "Could not find seeked fragment");
return FALSE;
}
if (flags & GST_SEEK_FLAG_FLUSH) {
GST_DEBUG_OBJECT (demux, "sending flush start");
gst_pad_push_event (demux->srcpad, gst_event_new_flush_start ());
}
demux->cancelled = TRUE;
gst_task_pause (demux->task);
g_mutex_lock (demux->fetcher_lock);
gst_hls_demux_stop_fetcher (demux, TRUE);
g_mutex_unlock (demux->fetcher_lock);
g_mutex_lock (demux->thread_lock);
g_cond_signal (demux->thread_cond);
g_mutex_unlock (demux->thread_lock);
gst_task_pause (demux->task);
/* wait for streaming to finish */
g_static_rec_mutex_lock (&demux->task_lock);
demux->need_cache = TRUE;
while (!g_queue_is_empty (demux->queue)) {
GstBuffer *buf = g_queue_pop_head (demux->queue);
gst_buffer_unref (buf);
}
GST_DEBUG_OBJECT (demux, "seeking to sequence %d", current_sequence);
demux->client->sequence = current_sequence;
demux->position = start;
demux->need_segment = TRUE;
if (flags & GST_SEEK_FLAG_FLUSH) {
GST_DEBUG_OBJECT (demux, "sending flush stop");
gst_pad_push_event (demux->srcpad, gst_event_new_flush_stop ());
}
demux->cancelled = FALSE;
gst_task_start (demux->task);
g_static_rec_mutex_unlock (&demux->task_lock);
return TRUE;
}
default:
break;
}
return gst_pad_event_default (pad, event);
}
static gboolean
gst_hls_demux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstHLSDemux *demux;
demux = GST_HLS_DEMUX (parent);
switch (event->type) {
case GST_EVENT_SEEK:
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
GList *walk;
GstClockTime position, current_pos, target_pos;
gint current_sequence;
GstM3U8MediaFile *file;
GST_INFO_OBJECT (demux, "Received GST_EVENT_SEEK");
if (gst_m3u8_client_is_live (demux->client)) {
GST_WARNING_OBJECT (demux, "Received seek event for live stream");
return FALSE;
}
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME)
return FALSE;
GST_DEBUG_OBJECT (demux, "seek event, rate: %f start: %" GST_TIME_FORMAT
" stop: %" GST_TIME_FORMAT, rate, GST_TIME_ARGS (start),
GST_TIME_ARGS (stop));
GST_M3U8_CLIENT_LOCK (demux->client);
file = GST_M3U8_MEDIA_FILE (demux->client->current->files->data);
current_sequence = file->sequence;
current_pos = 0;
target_pos = (GstClockTime) start;
for (walk = demux->client->current->files; walk; walk = walk->next) {
file = walk->data;
current_sequence = file->sequence;
if (current_pos <= target_pos
&& target_pos < current_pos + file->duration) {
break;
}
current_pos += file->duration;
}
GST_M3U8_CLIENT_UNLOCK (demux->client);
if (walk == NULL) {
GST_WARNING_OBJECT (demux, "Could not find seeked fragment");
return FALSE;
}
if (flags & GST_SEEK_FLAG_FLUSH) {
GST_DEBUG_OBJECT (demux, "sending flush start");
gst_pad_push_event (demux->srcpad, gst_event_new_flush_start ());
}
demux->cancelled = TRUE;
gst_task_pause (demux->stream_task);
gst_uri_downloader_cancel (demux->downloader);
gst_task_stop (demux->updates_task);
gst_task_pause (demux->stream_task);
/* wait for streaming to finish */
g_rec_mutex_lock (&demux->stream_lock);
demux->need_cache = TRUE;
while (!g_queue_is_empty (demux->queue)) {
GstFragment *fragment = g_queue_pop_head (demux->queue);
g_object_unref (fragment);
}
g_queue_clear (demux->queue);
GST_M3U8_CLIENT_LOCK (demux->client);
GST_DEBUG_OBJECT (demux, "seeking to sequence %d", current_sequence);
demux->client->sequence = current_sequence;
gst_m3u8_client_get_current_position (demux->client, &position);
demux->position_shift = start - position;
demux->need_segment = TRUE;
GST_M3U8_CLIENT_UNLOCK (demux->client);
if (flags & GST_SEEK_FLAG_FLUSH) {
GST_DEBUG_OBJECT (demux, "sending flush stop");
gst_pad_push_event (demux->srcpad, gst_event_new_flush_stop (TRUE));
}
demux->cancelled = FALSE;
gst_task_start (demux->stream_task);
g_rec_mutex_unlock (&demux->stream_lock);
return TRUE;
}
default:
break;
}
return gst_pad_event_default (pad, parent, event);
}
static gboolean
gst_hls_demux_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstHLSDemux *hlsdemux;
gboolean ret = FALSE;
if (query == NULL)
return FALSE;
hlsdemux = GST_HLS_DEMUX (parent);
switch (query->type) {
case GST_QUERY_DURATION:{
GstClockTime duration = -1;
GstFormat fmt;
gst_query_parse_duration (query, &fmt, NULL);
if (fmt == GST_FORMAT_TIME) {
duration = gst_m3u8_client_get_duration (hlsdemux->client);
if (GST_CLOCK_TIME_IS_VALID (duration) && duration > 0) {
gst_query_set_duration (query, GST_FORMAT_TIME, duration);
ret = TRUE;
}
}
GST_INFO_OBJECT (hlsdemux, "GST_QUERY_DURATION returns %s with duration %"
GST_TIME_FORMAT, ret ? "TRUE" : "FALSE", GST_TIME_ARGS (duration));
break;
}
case GST_QUERY_URI:
if (hlsdemux->client) {
/* FIXME: Do we answer with the variant playlist, with the current
* playlist or the the uri of the least downlowaded fragment? */
gst_query_set_uri (query, gst_m3u8_client_get_uri (hlsdemux->client));
ret = TRUE;
}
break;
case GST_QUERY_SEEKING:{
GstFormat fmt;
gint64 stop = -1;
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
GST_INFO_OBJECT (hlsdemux, "Received GST_QUERY_SEEKING with format %d",
fmt);
if (fmt == GST_FORMAT_TIME) {
GstClockTime duration;
duration = gst_m3u8_client_get_duration (hlsdemux->client);
if (GST_CLOCK_TIME_IS_VALID (duration) && duration > 0)
stop = duration;
gst_query_set_seeking (query, fmt,
!gst_m3u8_client_is_live (hlsdemux->client), 0, stop);
ret = TRUE;
GST_INFO_OBJECT (hlsdemux, "GST_QUERY_SEEKING returning with stop : %"
GST_TIME_FORMAT, GST_TIME_ARGS (stop));
}
break;
}
default:
/* Don't fordward queries upstream because of the special nature of this
* "demuxer", which relies on the upstream element only to be fed with the
* first playlist */
break;
}
return ret;
}
