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flvdemux: remove obsolete reverse playback code path
This commit is contained in:
Mark Nauwelaerts
parent
1c7b1d110b
commit
2d6d2a4d95
1 changed files with 51 additions and 81 deletions
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@ -772,91 +772,61 @@ gst_flv_demux_loop (GstPad * pad)
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demux = GST_FLV_DEMUX (gst_pad_get_parent (pad));
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if (TRUE || demux->segment.rate >= 0) {
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/* pull in data */
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switch (demux->state) {
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case FLV_STATE_TAG_TYPE:
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if (demux->from_offset == -1)
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demux->from_offset = demux->offset;
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ret = gst_flv_demux_pull_tag (pad, demux);
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/* if we have seen real data, we probably passed a possible metadata
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* header located at start. So if we do not yet have an index,
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* try to pick up metadata (index, duration) at the end */
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if (G_UNLIKELY (!demux->file_size && !demux->indexed &&
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(demux->has_video || demux->has_audio)))
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demux->file_size = gst_flv_demux_get_metadata (demux);
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break;
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case FLV_STATE_DONE:
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ret = GST_FLOW_UNEXPECTED;
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break;
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case FLV_STATE_SEEK:
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/* seek issued with insufficient index;
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* scan for index in task thread from current maximum offset to
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* desired time and then perform seek */
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/* TODO maybe some buffering message or so to indicate scan progress */
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ret = gst_flv_demux_create_index (demux, demux->index_max_pos,
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demux->seek_time);
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if (ret != GST_FLOW_OK)
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goto pause;
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/* position and state arranged by seek,
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* also unrefs event */
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gst_flv_demux_handle_seek_pull (demux, demux->seek_event, FALSE);
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demux->seek_event = NULL;
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break;
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default:
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ret = gst_flv_demux_pull_header (pad, demux);
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/* index scans start after header */
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demux->index_max_pos = demux->offset;
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break;
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}
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if (demux->segment.rate < 0.0) {
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/* check end of section */
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if ((gint64) demux->offset >= demux->to_offset ||
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demux->segment.last_stop >= demux->segment.stop + 2 * GST_SECOND ||
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(demux->audio_done && demux->video_done))
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ret = gst_flv_demux_seek_to_prev_keyframe (demux);
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} else {
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/* check EOS condition */
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if ((demux->segment.stop != -1) &&
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(demux->segment.last_stop >= demux->segment.stop)) {
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ret = GST_FLOW_UNEXPECTED;
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}
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}
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/* pause if something went wrong or at end */
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if (G_UNLIKELY (ret != GST_FLOW_OK))
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goto pause;
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} else { /* Reverse playback */
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/* pull in data */
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switch (demux->state) {
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case FLV_STATE_TAG_TYPE:
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ret = gst_flv_demux_pull_tag (pad, demux);
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/* When packet parsing returns UNEXPECTED that means we ve reached the
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point where we want to go to the previous keyframe. This is either
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the last FLV tag or the keyframe we used last time */
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if (ret == GST_FLOW_UNEXPECTED) {
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ret = gst_flv_demux_seek_to_prev_keyframe (demux);
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demux->state = FLV_STATE_TAG_TYPE;
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}
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break;
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default:
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ret = gst_flv_demux_pull_header (pad, demux);
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if (ret == GST_FLOW_OK)
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gst_flv_demux_create_index (demux, demux->offset, G_MAXINT64);
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}
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/* pause if something went wrong */
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if (G_UNLIKELY (ret != GST_FLOW_OK))
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goto pause;
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/* check EOS condition */
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if (demux->segment.last_stop <= demux->segment.start) {
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/* pull in data */
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switch (demux->state) {
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case FLV_STATE_TAG_TYPE:
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if (demux->from_offset == -1)
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demux->from_offset = demux->offset;
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ret = gst_flv_demux_pull_tag (pad, demux);
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/* if we have seen real data, we probably passed a possible metadata
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* header located at start. So if we do not yet have an index,
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* try to pick up metadata (index, duration) at the end */
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if (G_UNLIKELY (!demux->file_size && !demux->indexed &&
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(demux->has_video || demux->has_audio)))
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demux->file_size = gst_flv_demux_get_metadata (demux);
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break;
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case FLV_STATE_DONE:
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ret = GST_FLOW_UNEXPECTED;
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break;
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case FLV_STATE_SEEK:
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/* seek issued with insufficient index;
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* scan for index in task thread from current maximum offset to
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* desired time and then perform seek */
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/* TODO maybe some buffering message or so to indicate scan progress */
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ret = gst_flv_demux_create_index (demux, demux->index_max_pos,
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demux->seek_time);
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if (ret != GST_FLOW_OK)
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goto pause;
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/* position and state arranged by seek,
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* also unrefs event */
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gst_flv_demux_handle_seek_pull (demux, demux->seek_event, FALSE);
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demux->seek_event = NULL;
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break;
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default:
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ret = gst_flv_demux_pull_header (pad, demux);
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/* index scans start after header */
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demux->index_max_pos = demux->offset;
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break;
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}
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if (demux->segment.rate < 0.0) {
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/* check end of section */
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if ((gint64) demux->offset >= demux->to_offset ||
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demux->segment.last_stop >= demux->segment.stop + 2 * GST_SECOND ||
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(demux->audio_done && demux->video_done))
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ret = gst_flv_demux_seek_to_prev_keyframe (demux);
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} else {
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/* check EOS condition */
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if ((demux->segment.stop != -1) &&
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(demux->segment.last_stop >= demux->segment.stop)) {
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ret = GST_FLOW_UNEXPECTED;
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goto pause;
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}
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}
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/* pause if something went wrong or at end */
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if (G_UNLIKELY (ret != GST_FLOW_OK))
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goto pause;
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gst_object_unref (demux);
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return;
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