static gboolean
gst_hls_demux_process_manifest (GstAdaptiveDemux * demux, GstBuffer * buf)
{
GstHLSDemux *hlsdemux = GST_HLS_DEMUX_CAST (demux);
gchar *playlist = NULL;
if (hlsdemux->client)
gst_m3u8_client_free (hlsdemux->client);
hlsdemux->client =
gst_m3u8_client_new (demux->manifest_uri, demux->manifest_base_uri);
GST_INFO_OBJECT (demux, "Changed location: %s (base uri: %s)",
demux->manifest_uri, GST_STR_NULL (demux->manifest_base_uri));
playlist = gst_hls_src_buf_to_utf8_playlist (buf);
if (playlist == NULL) {
GST_WARNING_OBJECT (demux, "Error validating first playlist.");
return FALSE;
} else if (!gst_m3u8_client_update (hlsdemux->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 this playlist is a variant playlist, select the first one
* and update it */
if (gst_m3u8_client_has_variant_playlist (hlsdemux->client)) {
GstM3U8 *child = NULL;
GError *err = NULL;
if (demux->connection_speed == 0) {
GST_M3U8_CLIENT_LOCK (hlsdemux->client);
child = hlsdemux->client->main->current_variant->data;
GST_M3U8_CLIENT_UNLOCK (hlsdemux->client);
} else {
GList *tmp = gst_m3u8_client_get_playlist_for_bitrate (hlsdemux->client,
demux->connection_speed);
GST_M3U8_CLIENT_LOCK (hlsdemux->client);
hlsdemux->client->main->current_variant = tmp;
GST_M3U8_CLIENT_UNLOCK (hlsdemux->client);
child = GST_M3U8 (tmp->data);
}
gst_m3u8_client_set_current (hlsdemux->client, child);
if (!gst_hls_demux_update_playlist (hlsdemux, FALSE, &err)) {
GST_ELEMENT_ERROR_FROM_ERROR (demux, "Could not fetch the child playlist",
err);
return FALSE;
}
}
return gst_hls_demux_setup_streams (demux);
}
static gboolean
gst_hls_demux_cache_fragments (GstHLSDemux * demux)
{
gint i;
/* If this playlist is a variant playlist, select the first one
* and update it */
if (gst_m3u8_client_has_variant_playlist (demux->client)) {
GstM3U8 *child = NULL;
if (demux->connection_speed == 0) {
GST_M3U8_CLIENT_LOCK (demux->client);
child = demux->client->main->current_variant->data;
GST_M3U8_CLIENT_UNLOCK (demux->client);
} else {
GList *tmp = gst_m3u8_client_get_playlist_for_bitrate (demux->client,
demux->connection_speed);
child = GST_M3U8 (tmp->data);
}
gst_m3u8_client_set_current (demux->client, child);
if (!gst_hls_demux_update_playlist (demux, FALSE)) {
GST_ERROR_OBJECT (demux, "Could not fetch the child playlist %s",
child->uri);
return FALSE;
}
}
if (!gst_m3u8_client_is_live (demux->client)) {
GstClockTime duration = gst_m3u8_client_get_duration (demux->client);
GST_DEBUG_OBJECT (demux, "Sending duration message : %" GST_TIME_FORMAT,
GST_TIME_ARGS (duration));
if (duration != GST_CLOCK_TIME_NONE)
gst_element_post_message (GST_ELEMENT (demux),
gst_message_new_duration (GST_OBJECT (demux),
GST_FORMAT_TIME, duration));
}
/* Cache the first fragments */
for (i = 0; i < demux->fragments_cache; i++) {
gst_element_post_message (GST_ELEMENT (demux),
gst_message_new_buffering (GST_OBJECT (demux),
100 * i / demux->fragments_cache));
g_get_current_time (&demux->next_update);
if (!gst_hls_demux_get_next_fragment (demux, TRUE)) {
if (demux->end_of_playlist)
break;
if (!demux->cancelled)
GST_ERROR_OBJECT (demux, "Error caching the first fragments");
return FALSE;
}
/* make sure we stop caching fragments if something cancelled it */
if (demux->cancelled)
return FALSE;
gst_hls_demux_switch_playlist (demux);
}
gst_element_post_message (GST_ELEMENT (demux),
gst_message_new_buffering (GST_OBJECT (demux), 100));
g_get_current_time (&demux->next_update);
demux->need_cache = FALSE;
return TRUE;
}
static gboolean
gst_hls_demux_change_playlist (GstHLSDemux * demux, guint max_bitrate,
gboolean * changed)
{
GList *previous_variant, *current_variant;
gint old_bandwidth, new_bandwidth;
GstAdaptiveDemux *adaptive_demux = GST_ADAPTIVE_DEMUX_CAST (demux);
GstAdaptiveDemuxStream *stream;
g_return_val_if_fail (adaptive_demux->streams != NULL, FALSE);
stream = adaptive_demux->streams->data;
previous_variant = demux->client->main->current_variant;
current_variant = gst_m3u8_client_get_playlist_for_bitrate (demux->client,
max_bitrate);
GST_M3U8_CLIENT_LOCK (demux->client);
retry_failover_protection:
old_bandwidth = GST_M3U8 (previous_variant->data)->bandwidth;
new_bandwidth = GST_M3U8 (current_variant->data)->bandwidth;
/* Don't do anything else if the playlist is the same */
if (new_bandwidth == old_bandwidth) {
GST_M3U8_CLIENT_UNLOCK (demux->client);
return TRUE;
}
demux->client->main->current_variant = current_variant;
GST_M3U8_CLIENT_UNLOCK (demux->client);
gst_m3u8_client_set_current (demux->client, current_variant->data);
GST_INFO_OBJECT (demux, "Client was on %dbps, max allowed is %dbps, switching"
" to bitrate %dbps", old_bandwidth, max_bitrate, new_bandwidth);
if (gst_hls_demux_update_playlist (demux, TRUE, NULL)) {
gchar *uri;
gchar *main_uri;
uri = gst_m3u8_client_get_current_uri (demux->client);
main_uri = gst_m3u8_client_get_uri (demux->client);
gst_element_post_message (GST_ELEMENT_CAST (demux),
gst_message_new_element (GST_OBJECT_CAST (demux),
gst_structure_new (GST_ADAPTIVE_DEMUX_STATISTICS_MESSAGE_NAME,
"manifest-uri", G_TYPE_STRING,
main_uri, "uri", G_TYPE_STRING,
uri, "bitrate", G_TYPE_INT, new_bandwidth, NULL)));
g_free (uri);
g_free (main_uri);
if (changed)
*changed = TRUE;
stream->discont = TRUE;
} else {
GList *failover = NULL;
GST_INFO_OBJECT (demux, "Unable to update playlist. Switching back");
GST_M3U8_CLIENT_LOCK (demux->client);
failover = g_list_previous (current_variant);
if (failover && new_bandwidth == GST_M3U8 (failover->data)->bandwidth) {
current_variant = failover;
goto retry_failover_protection;
}
demux->client->main->current_variant = previous_variant;
GST_M3U8_CLIENT_UNLOCK (demux->client);
gst_m3u8_client_set_current (demux->client, previous_variant->data);
/* Try a lower bitrate (or stop if we just tried the lowest) */
if (GST_M3U8 (previous_variant->data)->iframe && new_bandwidth ==
GST_M3U8 (g_list_first (demux->client->main->iframe_lists)->data)->
bandwidth)
return FALSE;
else if (!GST_M3U8 (previous_variant->data)->iframe && new_bandwidth ==
GST_M3U8 (g_list_first (demux->client->main->lists)->data)->bandwidth)
return FALSE;
else
return gst_hls_demux_change_playlist (demux, new_bandwidth - 1, changed);
}
/* Force typefinding since we might have changed media type */
demux->do_typefind = TRUE;
return TRUE;
}
static gboolean
gst_hls_demux_change_playlist (GstHLSDemux * demux, guint max_bitrate)
{
GList *previous_variant, *current_variant;
gint old_bandwidth, new_bandwidth;
/* If user specifies a connection speed never use a playlist with a bandwidth
* superior than it */
if (demux->connection_speed != 0 && max_bitrate > demux->connection_speed)
max_bitrate = demux->connection_speed;
previous_variant = demux->client->main->current_variant;
current_variant = gst_m3u8_client_get_playlist_for_bitrate (demux->client,
max_bitrate);
retry_failover_protection:
old_bandwidth = GST_M3U8 (previous_variant->data)->bandwidth;
new_bandwidth = GST_M3U8 (current_variant->data)->bandwidth;
/* Don't do anything else if the playlist is the same */
if (new_bandwidth == old_bandwidth) {
return TRUE;
}
demux->client->main->current_variant = current_variant;
GST_M3U8_CLIENT_UNLOCK (demux->client);
gst_m3u8_client_set_current (demux->client, current_variant->data);
GST_INFO_OBJECT (demux, "Client was on %dbps, max allowed is %dbps, switching"
" to bitrate %dbps", old_bandwidth, max_bitrate, new_bandwidth);
if (gst_hls_demux_update_playlist (demux, FALSE)) {
GstStructure *s;
s = gst_structure_new ("playlist",
"uri", G_TYPE_STRING, gst_m3u8_client_get_current_uri (demux->client),
"bitrate", G_TYPE_INT, new_bandwidth, NULL);
gst_element_post_message (GST_ELEMENT_CAST (demux),
gst_message_new_element (GST_OBJECT_CAST (demux), s));
} else {
GList *failover = NULL;
GST_INFO_OBJECT (demux, "Unable to update playlist. Switching back");
GST_M3U8_CLIENT_LOCK (demux->client);
failover = g_list_previous (current_variant);
if (failover && new_bandwidth == GST_M3U8 (failover->data)->bandwidth) {
current_variant = failover;
goto retry_failover_protection;
}
demux->client->main->current_variant = previous_variant;
GST_M3U8_CLIENT_UNLOCK (demux->client);
gst_m3u8_client_set_current (demux->client, previous_variant->data);
/* Try a lower bitrate (or stop if we just tried the lowest) */
if (new_bandwidth ==
GST_M3U8 (g_list_first (demux->client->main->lists)->data)->bandwidth)
return FALSE;
else
return gst_hls_demux_change_playlist (demux, new_bandwidth - 1);
}
/* Force typefinding since we might have changed media type */
demux->do_typefind = TRUE;
return TRUE;
}
