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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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ogg: Implement Ogg VP8 mapping
This commit is contained in:
Sebastian Dröge
parent
0a4eaa7f60
commit
5fc1309703
4 changed files with 157 additions and 24 deletions
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@ -437,7 +437,7 @@ gst_ogg_demux_chain_peer (GstOggPad * pad, ogg_packet * packet,
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GST_BUFFER_SIZE (buf) = bytes;
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tags = gst_tag_list_from_vorbiscomment_buffer (buf,
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(guint8 *) "\003vorbis", 7, NULL);
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(const guint8 *) "\003vorbis", 7, NULL);
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gst_buffer_unref (buf);
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buf = NULL;
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@ -465,6 +465,39 @@ gst_ogg_demux_chain_peer (GstOggPad * pad, ogg_packet * packet,
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bytes--;
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}
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}
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} else if (pad->map.is_vp8) {
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/* packet 0 is from the BOS page, packet 1 is the vorbiscomment page */
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if (packet->packetno == 1 && packet->bytes >= 7
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&& memcmp (packet->packet, "VP8_TAG", 7) == 0) {
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GstTagList *tags;
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buf = gst_buffer_new ();
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GST_BUFFER_DATA (buf) = (guint8 *) packet->packet;
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GST_BUFFER_SIZE (buf) = packet->bytes;
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tags = gst_tag_list_from_vorbiscomment_buffer (buf,
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(const guint8 *) "VP8_TAG", 7, NULL);
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gst_buffer_unref (buf);
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buf = NULL;
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if (tags) {
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GST_DEBUG_OBJECT (ogg, "tags = %" GST_PTR_FORMAT, tags);
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gst_element_found_tags_for_pad (GST_ELEMENT (ogg), GST_PAD_CAST (pad),
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tags);
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} else {
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GST_DEBUG_OBJECT (ogg, "failed to extract tags from vorbis comment");
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}
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/* We don't push header packets for VP8 */
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cret = gst_ogg_demux_combine_flows (ogg, pad, GST_FLOW_OK);
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goto done;
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} else if (packet->b_o_s) {
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/* We don't push header packets for VP8 */
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cret = gst_ogg_demux_combine_flows (ogg, pad, GST_FLOW_OK);
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goto done;
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}
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offset = 0;
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trim = 0;
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} else {
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offset = 0;
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trim = 0;
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@ -524,8 +557,8 @@ gst_ogg_demux_chain_peer (GstOggPad * pad, ogg_packet * packet,
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pad->current_granule) - out_timestamp;
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}
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out_offset_end =
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gst_ogg_stream_granule_to_granulepos (&pad->map, pad->current_granule,
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pad->keyframe_granule);
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gst_ogg_stream_granule_to_granulepos (&pad->map,
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pad->current_granule, pad->keyframe_granule);
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out_offset =
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gst_ogg_stream_granule_to_time (&pad->map, pad->current_granule);
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}
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@ -629,12 +662,14 @@ empty_packet:
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cret = gst_ogg_demux_combine_flows (ogg, pad, GST_FLOW_OK);
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goto done;
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}
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no_timestamp:
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{
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GST_DEBUG_OBJECT (ogg, "skipping packet: no valid granule found yet");
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cret = gst_ogg_demux_combine_flows (ogg, pad, GST_FLOW_OK);
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goto done;
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}
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no_buffer:
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{
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GST_DEBUG_OBJECT (ogg,
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@ -1485,8 +1520,8 @@ error:
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* is.
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*/
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static GstFlowReturn
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gst_ogg_demux_get_next_page (GstOggDemux * ogg, ogg_page * og, gint64 boundary,
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gint64 * offset)
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gst_ogg_demux_get_next_page (GstOggDemux * ogg, ogg_page * og,
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gint64 boundary, gint64 * offset)
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{
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gint64 end_offset = -1;
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GstFlowReturn ret;
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@ -1511,8 +1546,8 @@ gst_ogg_demux_get_next_page (GstOggDemux * ogg, ogg_page * og, gint64 boundary,
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if (more < 0) {
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/* skipped n bytes */
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ogg->offset -= more;
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GST_LOG_OBJECT (ogg, "skipped %ld bytes, offset %" G_GINT64_FORMAT, more,
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ogg->offset);
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GST_LOG_OBJECT (ogg, "skipped %ld bytes, offset %" G_GINT64_FORMAT,
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more, ogg->offset);
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} else if (more == 0) {
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/* we need more data */
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if (boundary == 0)
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@ -1783,8 +1818,8 @@ do_binary_search (GstOggDemux * ogg, GstOggChain * chain, gint64 begin,
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best = begin;
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GST_DEBUG_OBJECT (ogg,
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"chain offset %" G_GINT64_FORMAT ", end offset %" G_GINT64_FORMAT, begin,
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end);
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"chain offset %" G_GINT64_FORMAT ", end offset %" G_GINT64_FORMAT,
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begin, end);
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GST_DEBUG_OBJECT (ogg,
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"chain begin time %" GST_TIME_FORMAT ", end time %" GST_TIME_FORMAT,
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GST_TIME_ARGS (begintime), GST_TIME_ARGS (endtime));
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@ -2048,8 +2083,8 @@ gst_ogg_demux_do_seek (GstOggDemux * ogg, GstSegment * segment,
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continue;
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/* convert granule of this pad to the granule of the keyframe */
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pad->keyframe_granule = gst_ogg_stream_granulepos_to_key_granule (&pad->map,
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granulepos);
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pad->keyframe_granule =
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gst_ogg_stream_granulepos_to_key_granule (&pad->map, granulepos);
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GST_LOG_OBJECT (ogg, "marking stream granule %" G_GINT64_FORMAT,
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pad->keyframe_granule);
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@ -2894,8 +2929,8 @@ gst_ogg_demux_find_chains (GstOggDemux * ogg)
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/* we still call this function here but with an empty range so that
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* we can reuse the setup code in this routine. */
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ret =
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gst_ogg_demux_bisect_forward_serialno (ogg, 0, ogg->length, ogg->length,
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chain, 0);
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gst_ogg_demux_bisect_forward_serialno (ogg, 0, ogg->length,
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ogg->length, chain, 0);
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}
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if (ret != GST_FLOW_OK)
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goto done;
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@ -3550,8 +3585,9 @@ gst_ogg_print (GstOggDemux * ogg)
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GstOggChain *chain = g_array_index (ogg->chains, GstOggChain *, i);
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GST_INFO_OBJECT (ogg, " chain %d (%u streams):", i, chain->streams->len);
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GST_INFO_OBJECT (ogg, " offset: %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT,
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chain->offset, chain->end_offset);
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GST_INFO_OBJECT (ogg,
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" offset: %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT, chain->offset,
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chain->end_offset);
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GST_INFO_OBJECT (ogg, " begin time: %" GST_TIME_FORMAT,
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GST_TIME_ARGS (chain->begin_time));
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GST_INFO_OBJECT (ogg, " total time: %" GST_TIME_FORMAT,
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@ -41,6 +41,7 @@
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#include <gst/gst.h>
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#include <gst/base/gstcollectpads.h>
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#include <gst/tag/tag.h>
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#include "gstoggmux.h"
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@ -100,7 +101,7 @@ static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%d",
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GST_STATIC_CAPS ("video/x-theora; "
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"audio/x-vorbis; audio/x-flac; audio/x-speex; audio/x-celt; "
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"application/x-ogm-video; application/x-ogm-audio; video/x-dirac; "
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"video/x-smoke; text/x-cmml, encoded = (boolean) TRUE; "
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"video/x-smoke; video/x-vp8; text/x-cmml, encoded = (boolean) TRUE; "
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"subtitle/x-kate; application/x-kate")
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);
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@ -1037,7 +1038,7 @@ gst_ogg_mux_send_headers (GstOggMux * mux)
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GST_LOG_OBJECT (mux, "swapped out page with mime type %s",
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gst_structure_get_name (structure));
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/* quick hack: put Theora and Dirac video pages at the front.
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/* quick hack: put Theora, VP8 and Dirac video pages at the front.
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* Ideally, we would have a settable enum for which Ogg
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* profile we work with, and order based on that.
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* (FIXME: if there is more than one video stream, shouldn't we only put
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@ -1050,6 +1051,9 @@ gst_ogg_mux_send_headers (GstOggMux * mux)
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GST_DEBUG_OBJECT (thepad, "putting %s page at the front", "Dirac");
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hbufs = g_list_prepend (hbufs, hbuf);
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pad->always_flush_page = TRUE;
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} else if (gst_structure_has_name (structure, "video/x-vp8")) {
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GST_DEBUG_OBJECT (thepad, "putting %s page at the front", "VP8");
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hbufs = g_list_prepend (hbufs, hbuf);
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} else {
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hbufs = g_list_append (hbufs, hbuf);
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}
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@ -1188,7 +1192,6 @@ gst_ogg_mux_process_best_pad (GstOggMux * ogg_mux, GstOggPadData * best)
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if (ogg_mux->pulling && best &&
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ogg_mux->pulling != best && ogg_mux->pulling->buffer) {
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GstOggPadData *pad = ogg_mux->pulling;
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GstClockTime last_ts = GST_BUFFER_END_TIME (pad->buffer);
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/* if the next packet in the current page is going to make the page
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@ -56,8 +56,6 @@ typedef gboolean (*GstOggMapIsHeaderPacketFunc) (GstOggStream * pad,
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typedef gint64 (*GstOggMapPacketDurationFunc) (GstOggStream * pad,
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ogg_packet * packet);
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#define SKELETON_FISBONE_MIN_SIZE 52
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#define SKELETON_FISHEAD_3_3_MIN_SIZE 112
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@ -207,9 +205,6 @@ gst_ogg_stream_get_packet_duration (GstOggStream * pad, ogg_packet * packet)
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return mappers[pad->map].packet_duration_func (pad, packet);
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}
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/* some generic functions */
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static gboolean
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@ -463,6 +458,93 @@ granule_to_granulepos_dirac (GstOggStream * pad, gint64 granule,
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return -1;
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}
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/* VP8 */
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static gboolean
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setup_vp8_mapper (GstOggStream * pad, ogg_packet * packet)
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{
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gint width, height, par_n, par_d, fps_n, fps_d;
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if (packet->bytes < 24) {
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GST_DEBUG ("Failed to parse VP8 BOS page");
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return FALSE;
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}
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width = GST_READ_UINT16_BE (packet->packet + 6);
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height = GST_READ_UINT16_BE (packet->packet + 8);
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par_n = GST_READ_UINT24_BE (packet->packet + 10);
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par_d = GST_READ_UINT24_BE (packet->packet + 13);
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fps_n = GST_READ_UINT32_BE (packet->packet + 16);
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fps_d = GST_READ_UINT32_BE (packet->packet + 20);
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pad->is_vp8 = TRUE;
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pad->granulerate_n = fps_n;
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pad->granulerate_d = fps_d;
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pad->n_header_packets = 2;
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pad->frame_size = 1;
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pad->caps = gst_caps_new_simple ("video/x-vp8",
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"width", G_TYPE_INT, width,
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"height", G_TYPE_INT, height,
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"pixel-aspect-ratio", GST_TYPE_FRACTION,
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par_n, par_d, "framerate", GST_TYPE_FRACTION, fps_n, fps_d, NULL);
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return TRUE;
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}
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static gboolean
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is_keyframe_vp8 (GstOggStream * pad, gint64 granulepos)
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{
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guint64 gpos = granulepos;
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if (granulepos == -1)
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return FALSE;
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/* Get rid of flags */
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gpos >>= 3;
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return ((gpos & 0x07ffffff) == 0);
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}
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static gint64
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granulepos_to_granule_vp8 (GstOggStream * pad, gint64 gpos)
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{
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guint64 gp = (guint64) gpos;
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guint32 pt;
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guint32 dist;
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pt = (gp >> 32);
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dist = (gp >> 3) & 0x07ffffff;
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GST_DEBUG ("pt %u, dist %u", pt, dist);
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return pt;
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}
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static gint64
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granule_to_granulepos_vp8 (GstOggStream * pad, gint64 granule,
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gint64 keyframe_granule)
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{
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/* FIXME: This requires to look into the content of the packets
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* because the simple granule counter doesn't know about invisible
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* frames...
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*/
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return -1;
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}
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/* Check if this packet contains an invisible frame or not */
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static gint64
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packet_duration_vp8 (GstOggStream * pad, ogg_packet * packet)
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{
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guint32 hdr;
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if (packet->bytes < 3)
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return 0;
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hdr = GST_READ_UINT24_LE (packet->packet);
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return (((hdr >> 4) & 1) != 0) ? 1 : 0;
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}
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/* vorbis */
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@ -1452,7 +1534,7 @@ static const GstOggMap mappers[] = {
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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},
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{
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"CELT ", 8, 0,
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@ -1484,6 +1566,16 @@ static const GstOggMap mappers[] = {
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is_header_count,
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packet_duration_constant
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},
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{
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"VP80\1", 5, 4,
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"video/x-vp8",
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setup_vp8_mapper,
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granulepos_to_granule_vp8,
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granule_to_granulepos_vp8,
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is_keyframe_vp8,
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is_header_count,
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packet_duration_vp8
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},
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{
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"\001audio\0\0\0", 9, 53,
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"application/x-ogm-audio",
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@ -79,6 +79,8 @@ struct _GstOggStream
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int last_size;
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/* theora stuff */
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gboolean theora_has_zero_keyoffset;
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/* VP8 stuff */
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gboolean is_vp8;
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/* OGM stuff */
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gboolean is_ogm;
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gboolean is_ogm_text;
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