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The built-in video parsers elements are built into a single DSO named libgstvaapi_parse.so. The various video parsers could be accessed as vaapiparse_CODEC. For now, this only includes a modified version of h264parse so that to support H.264 MVC encoded streams.
99 lines
4.3 KiB
Diff
99 lines
4.3 KiB
Diff
From 3ef58fae7a578f72c4607b57434ed54a0ee9ee1d Mon Sep 17 00:00:00 2001
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From: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
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Date: Tue, 19 Mar 2013 14:23:00 +0200
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Subject: [PATCH 3/3] h264parse: add initial support for MVC NAL units.
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Initial support for MVC NAL units. It is only needed to propagate the
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complete set of NAL units downstream at this time.
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https://bugzilla.gnome.org/show_bug.cgi?id=696135
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Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
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Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
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---
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gst/vaapi/gsth264parse.c | 20 ++++++++++++++------
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1 file changed, 14 insertions(+), 6 deletions(-)
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diff --git a/gst/vaapi/gsth264parse.c b/gst/vaapi/gsth264parse.c
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index 7c970ee..e9b9481 100644
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--- a/gst/vaapi/gsth264parse.c
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+++ b/gst/vaapi/gsth264parse.c
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@@ -415,7 +415,7 @@ gst_h264_parser_store_nal (GstH264Parse * h264parse, guint id,
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GstBuffer *buf, **store;
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guint size = nalu->size, store_size;
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- if (naltype == GST_H264_NAL_SPS) {
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+ if (naltype == GST_H264_NAL_SPS || naltype == GST_H264_NAL_SUBSET_SPS) {
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store_size = GST_H264_MAX_SPS_COUNT;
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store = h264parse->sps_nals;
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GST_DEBUG_OBJECT (h264parse, "storing sps %u", id);
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@@ -534,6 +534,7 @@ gst_h264_parse_process_nal (GstH264Parse * h264parse, GstH264NalUnit * nalu)
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switch (nal_type) {
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case GST_H264_NAL_SPS:
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+ case GST_H264_NAL_SUBSET_SPS:
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pres = gst_h264_parser_parse_sps (nalparser, nalu, &sps, TRUE);
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/* arranged for a fallback sps.id, so use that one and only warn */
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if (pres != GST_H264_PARSER_OK)
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@@ -594,14 +595,17 @@ gst_h264_parse_process_nal (GstH264Parse * h264parse, GstH264NalUnit * nalu)
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case GST_H264_NAL_SLICE_DPB:
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case GST_H264_NAL_SLICE_DPC:
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case GST_H264_NAL_SLICE_IDR:
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+ case GST_H264_NAL_SLICE_EXT:
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/* don't need to parse the whole slice (header) here */
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- if (*(nalu->data + nalu->offset + 1) & 0x80) {
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+ if (*(nalu->data + nalu->offset + nalu->header_bytes) & 0x80) {
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/* means first_mb_in_slice == 0 */
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/* real frame data */
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GST_DEBUG_OBJECT (h264parse, "first_mb_in_slice = 0");
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h264parse->frame_start = TRUE;
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}
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GST_DEBUG_OBJECT (h264parse, "frame start: %i", h264parse->frame_start);
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+ if (nal_type == GST_H264_NAL_SLICE_EXT && !GST_H264_IS_MVC_NALU (nalu))
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+ break;
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{
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GstH264SliceHdr slice;
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@@ -677,7 +681,8 @@ gst_h264_parse_collect_nal (GstH264Parse * h264parse, const guint8 * data,
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/* coded slice NAL starts a picture,
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* i.e. other types become aggregated in front of it */
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h264parse->picture_start |= (nal_type == GST_H264_NAL_SLICE ||
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- nal_type == GST_H264_NAL_SLICE_DPA || nal_type == GST_H264_NAL_SLICE_IDR);
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+ nal_type == GST_H264_NAL_SLICE_DPA || nal_type == GST_H264_NAL_SLICE_IDR
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+ || nal_type == GST_H264_NAL_SLICE_EXT);
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/* consider a coded slices (IDR or not) to start a picture,
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* (so ending the previous one) if first_mb_in_slice == 0
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@@ -687,16 +692,18 @@ gst_h264_parse_collect_nal (GstH264Parse * h264parse, const guint8 * data,
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* and also works with broken frame_num in NAL
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* (where spec-wise would fail) */
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nal_type = nnalu.type;
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- complete = h264parse->picture_start && (nal_type >= GST_H264_NAL_SEI &&
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- nal_type <= GST_H264_NAL_AU_DELIMITER);
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+ complete = h264parse->picture_start && ((nal_type >= GST_H264_NAL_SEI &&
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+ nal_type <= GST_H264_NAL_AU_DELIMITER) ||
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+ (nal_type >= 14 && nal_type <= 18));
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GST_LOG_OBJECT (h264parse, "next nal type: %d %s", nal_type,
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_nal_name (nal_type));
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complete |= h264parse->picture_start && (nal_type == GST_H264_NAL_SLICE
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|| nal_type == GST_H264_NAL_SLICE_DPA
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+ || nal_type == GST_H264_NAL_SLICE_EXT
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|| nal_type == GST_H264_NAL_SLICE_IDR) &&
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/* first_mb_in_slice == 0 considered start of frame */
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- (nnalu.data[nnalu.offset + 1] & 0x80);
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+ (nnalu.data[nnalu.offset + nnalu.header_bytes] & 0x80);
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GST_LOG_OBJECT (h264parse, "au complete: %d", complete);
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@@ -960,6 +967,7 @@ gst_h264_parse_handle_frame (GstBaseParse * parse,
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}
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if (nalu.type == GST_H264_NAL_SPS ||
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+ nalu.type == GST_H264_NAL_SUBSET_SPS ||
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nalu.type == GST_H264_NAL_PPS ||
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(h264parse->have_sps && h264parse->have_pps)) {
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gst_h264_parse_process_nal (h264parse, &nalu);
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--
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1.7.9.5
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