static gboolean gst_hls_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek) { GstHLSDemux *hlsdemux = GST_HLS_DEMUX_CAST (demux); GstFormat format; GstSeekFlags flags; GstSeekType start_type, stop_type; gint64 start, stop; gdouble rate; GList *walk, *current_file = NULL; GstClockTime current_pos, target_pos; gint64 current_sequence; GstM3U8MediaFile *file; guint64 bitrate; gboolean snap_before, snap_after, snap_nearest, keyunit; gboolean reverse; gst_event_parse_seek (seek, &rate, &format, &flags, &start_type, &start, &stop_type, &stop); bitrate = gst_hls_demux_get_bitrate (hlsdemux); /* properly cleanup pending decryption status */ if (flags & GST_SEEK_FLAG_FLUSH) { gst_hls_demux_clear_pending_data (hlsdemux); } /* Use I-frame variants for trick modes */ if (hlsdemux->client->main->iframe_lists && rate < -1.0 && demux->segment.rate >= -1.0 && demux->segment.rate <= 1.0) { GError *err = NULL; GST_M3U8_CLIENT_LOCK (hlsdemux->client); /* Switch to I-frame variant */ hlsdemux->client->main->current_variant = hlsdemux->client->main->iframe_lists; GST_M3U8_CLIENT_UNLOCK (hlsdemux->client); gst_m3u8_client_set_current (hlsdemux->client, hlsdemux->client->main->iframe_lists->data); gst_uri_downloader_reset (demux->downloader); if (!gst_hls_demux_update_playlist (hlsdemux, FALSE, &err)) { GST_ELEMENT_ERROR_FROM_ERROR (hlsdemux, "Could not switch playlist", err); return FALSE; } //hlsdemux->discont = TRUE; hlsdemux->do_typefind = TRUE; gst_hls_demux_change_playlist (hlsdemux, bitrate / ABS (rate), NULL); } else if (rate > -1.0 && rate <= 1.0 && (demux->segment.rate < -1.0 || demux->segment.rate > 1.0)) { GError *err = NULL; GST_M3U8_CLIENT_LOCK (hlsdemux->client); /* Switch to normal variant */ hlsdemux->client->main->current_variant = hlsdemux->client->main->lists; GST_M3U8_CLIENT_UNLOCK (hlsdemux->client); gst_m3u8_client_set_current (hlsdemux->client, hlsdemux->client->main->lists->data); gst_uri_downloader_reset (demux->downloader); if (!gst_hls_demux_update_playlist (hlsdemux, FALSE, &err)) { GST_ELEMENT_ERROR_FROM_ERROR (hlsdemux, "Could not switch playlist", err); return FALSE; } //hlsdemux->discont = TRUE; hlsdemux->do_typefind = TRUE; /* TODO why not continue using the same? that was being used up to now? */ gst_hls_demux_change_playlist (hlsdemux, bitrate, NULL); } GST_M3U8_CLIENT_LOCK (hlsdemux->client); file = GST_M3U8_MEDIA_FILE (hlsdemux->client->current->files->data); current_sequence = file->sequence; current_pos = 0; reverse = rate < 0; target_pos = reverse ? stop : start; /* Snap to segment boundary. Improves seek performance on slow machines. */ keyunit = ! !(flags & GST_SEEK_FLAG_KEY_UNIT); snap_nearest = (flags & GST_SEEK_FLAG_SNAP_NEAREST) == GST_SEEK_FLAG_SNAP_NEAREST; snap_before = ! !(flags & GST_SEEK_FLAG_SNAP_BEFORE); snap_after = ! !(flags & GST_SEEK_FLAG_SNAP_AFTER); /* FIXME: Here we need proper discont handling */ for (walk = hlsdemux->client->current->files; walk; walk = walk->next) { file = walk->data; current_sequence = file->sequence; current_file = walk; if ((!reverse && snap_after) || snap_nearest) { if (current_pos >= target_pos) break; if (snap_nearest && target_pos - current_pos < file->duration / 2) break; } else if (reverse && snap_after) { /* check if the next fragment is our target, in this case we want to * start from the previous fragment */ GstClockTime next_pos = current_pos + file->duration; if (next_pos <= target_pos && target_pos < next_pos + file->duration) { break; } } else if (current_pos <= target_pos && target_pos < current_pos + file->duration) { break; } current_pos += file->duration; } if (walk == NULL) { GST_DEBUG_OBJECT (demux, "seeking further than track duration"); current_sequence++; } GST_DEBUG_OBJECT (demux, "seeking to sequence %u", (guint) current_sequence); hlsdemux->reset_pts = TRUE; hlsdemux->client->sequence = current_sequence; hlsdemux->client->current_file = current_file ? current_file : hlsdemux->client->current->files; hlsdemux->client->sequence_position = current_pos; GST_M3U8_CLIENT_UNLOCK (hlsdemux->client); /* Play from the end of the current selected segment */ if (reverse && (snap_before || snap_after || snap_nearest)) current_pos += file->duration; if (keyunit || snap_before || snap_after || snap_nearest) { if (!reverse) gst_segment_do_seek (&demux->segment, rate, format, flags, start_type, current_pos, stop_type, stop, NULL); else gst_segment_do_seek (&demux->segment, rate, format, flags, start_type, start, stop_type, current_pos, NULL); } return TRUE; }
static gboolean gst_hls_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek) { GstHLSDemux *hlsdemux = GST_HLS_DEMUX_CAST (demux); GstFormat format; GstSeekFlags flags; GstSeekType start_type, stop_type; gint64 start, stop; gdouble rate; GList *walk, *current_file = NULL; GstClockTime current_pos, target_pos; gint64 current_sequence; GstM3U8MediaFile *file; guint64 bitrate; gst_event_parse_seek (seek, &rate, &format, &flags, &start_type, &start, &stop_type, &stop); bitrate = gst_hls_demux_get_bitrate (hlsdemux); /* properly cleanup pending decryption status */ if (flags & GST_SEEK_FLAG_FLUSH) { gst_hls_demux_decrypt_end (hlsdemux); } /* Use I-frame variants for trick modes */ if (hlsdemux->client->main->iframe_lists && rate < -1.0 && demux->segment.rate >= -1.0 && demux->segment.rate <= 1.0) { GError *err = NULL; GST_M3U8_CLIENT_LOCK (hlsdemux->client); /* Switch to I-frame variant */ hlsdemux->client->main->current_variant = hlsdemux->client->main->iframe_lists; GST_M3U8_CLIENT_UNLOCK (hlsdemux->client); gst_m3u8_client_set_current (hlsdemux->client, hlsdemux->client->main->iframe_lists->data); gst_uri_downloader_reset (demux->downloader); if (!gst_hls_demux_update_playlist (hlsdemux, FALSE, &err)) { GST_ELEMENT_ERROR_FROM_ERROR (hlsdemux, "Could not switch playlist", err); return FALSE; } //hlsdemux->discont = TRUE; hlsdemux->do_typefind = TRUE; gst_hls_demux_change_playlist (hlsdemux, bitrate / ABS (rate), NULL); } else if (rate > -1.0 && rate <= 1.0 && (demux->segment.rate < -1.0 || demux->segment.rate > 1.0)) { GError *err = NULL; GST_M3U8_CLIENT_LOCK (hlsdemux->client); /* Switch to normal variant */ hlsdemux->client->main->current_variant = hlsdemux->client->main->lists; GST_M3U8_CLIENT_UNLOCK (hlsdemux->client); gst_m3u8_client_set_current (hlsdemux->client, hlsdemux->client->main->lists->data); gst_uri_downloader_reset (demux->downloader); if (!gst_hls_demux_update_playlist (hlsdemux, FALSE, &err)) { GST_ELEMENT_ERROR_FROM_ERROR (hlsdemux, "Could not switch playlist", err); return FALSE; } //hlsdemux->discont = TRUE; hlsdemux->do_typefind = TRUE; /* TODO why not continue using the same? that was being used up to now? */ gst_hls_demux_change_playlist (hlsdemux, bitrate, NULL); } GST_M3U8_CLIENT_LOCK (hlsdemux->client); file = GST_M3U8_MEDIA_FILE (hlsdemux->client->current->files->data); current_sequence = file->sequence; current_pos = 0; target_pos = rate > 0 ? start : stop; /* FIXME: Here we need proper discont handling */ for (walk = hlsdemux->client->current->files; walk; walk = walk->next) { file = walk->data; current_sequence = file->sequence; current_file = walk; if (current_pos <= target_pos && target_pos < current_pos + file->duration) { break; } current_pos += file->duration; } if (walk == NULL) { GST_DEBUG_OBJECT (demux, "seeking further than track duration"); current_sequence++; } GST_DEBUG_OBJECT (demux, "seeking to sequence %u", (guint) current_sequence); hlsdemux->reset_pts = TRUE; hlsdemux->client->sequence = current_sequence; hlsdemux->client->current_file = current_file ? current_file : hlsdemux->client->current->files; hlsdemux->client->sequence_position = current_pos; GST_M3U8_CLIENT_UNLOCK (hlsdemux->client); return TRUE; }