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h264parser: Add APIs to allow update SPS/PPS

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gst_h264_parser_parse_{sps,pps} APIs were used to parse SPS/PPS and
also in order to update parser's internal state at once. Meanwhile
gst_h264_parse_{sps,pps} APIs are to parse SPS/PPS without state update.
This commit introduces new APIs so that only accepted SPS/PPS by user
can be updated to be used by parser.
This commit is contained in:
Seungha Yang 2020-03-30 15:27:40 +09:00 committed by GStreamer Merge Bot
parent 430848548d
commit a61549cbde
2 changed files with 91 additions and 0 deletions
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83
gst-libs/gst/codecparsers/gsth264parser.c
View file

@ -2496,6 +2496,89 @@ gst_h264_parser_parse_sei (GstH264NalParser * nalparser, GstH264NalUnit * nalu,
return res;
}
/**
* gst_h264_parser_update_sps:
* @nalparser: a #GstH264NalParser
* @sps: (transfer none): a #GstH264SPS.
*
* Replace internal Sequence Parameter Set struct corresponding to id of @sps
* with @sps. @nalparser will mark @sps as last parsed sps.
*
* Returns: a #GstH264ParserResult
*
* Since: 1.18
*/
GstH264ParserResult
gst_h264_parser_update_sps (GstH264NalParser * nalparser, GstH264SPS * sps)
{
g_return_val_if_fail (nalparser != NULL, GST_H264_PARSER_ERROR);
g_return_val_if_fail (sps != NULL, GST_H264_PARSER_ERROR);
g_return_val_if_fail (sps->id >= 0 && sps->id < GST_H264_MAX_SPS_COUNT,
GST_H264_PARSER_ERROR);
if (!sps->valid) {
GST_WARNING ("Cannot update with invalid SPS");
return GST_H264_PARSER_ERROR;
}
GST_DEBUG ("Updating sequence parameter set with id: %d", sps->id);
if (!gst_h264_sps_copy (&nalparser->sps[sps->id], sps))
return GST_H264_PARSER_ERROR;
nalparser->last_sps = &nalparser->sps[sps->id];
return GST_H264_PARSER_OK;
}
/**
* gst_h264_parser_update_pps:
* @nalparser: a #GstH264NalParser
* @pps: (transfer none): a #GstH264PPS.
*
* Replace internal Picture Parameter Set struct corresponding to id of @pps
* with @pps. @nalparser will mark @pps as last parsed pps.
*
* Returns: a #GstH264ParserResult
*
* Since: 1.18
*/
GstH264ParserResult
gst_h264_parser_update_pps (GstH264NalParser * nalparser, GstH264PPS * pps)
{
GstH264SPS *sps;
g_return_val_if_fail (nalparser != NULL, GST_H264_PARSER_ERROR);
g_return_val_if_fail (pps != NULL, GST_H264_PARSER_ERROR);
g_return_val_if_fail (pps->id >= 0 && pps->id < GST_H264_MAX_PPS_COUNT,
GST_H264_PARSER_ERROR);
if (!pps->valid) {
GST_WARNING ("Cannot update with invalid PPS");
return GST_H264_PARSER_ERROR;
}
if (!pps->sequence) {
GST_WARNING ("No linked SPS struct");
return GST_H264_PARSER_BROKEN_LINK;
}
sps = gst_h264_parser_get_sps (nalparser, pps->sequence->id);
if (!sps || sps != pps->sequence) {
GST_WARNING ("Linked SPS is not identical to internal SPS");
return GST_H264_PARSER_BROKEN_LINK;
}
GST_DEBUG ("Updating picture parameter set with id: %d", pps->id);
if (!gst_h264_pps_copy (&nalparser->pps[pps->id], pps))
return GST_H264_PARSER_ERROR;
nalparser->last_pps = &nalparser->pps[pps->id];
return GST_H264_PARSER_OK;
}
/**
* gst_h264_quant_matrix_8x8_get_zigzag_from_raster:
* @out_quant: (out): The resulting quantization matrix

8
gst-libs/gst/codecparsers/gsth264parser.h
View file

@ -1260,6 +1260,14 @@ GST_CODEC_PARSERS_API
GstH264ParserResult gst_h264_parser_parse_sei (GstH264NalParser *nalparser,
GstH264NalUnit *nalu, GArray ** messages);
GST_CODEC_PARSERS_API
GstH264ParserResult gst_h264_parser_update_sps (GstH264NalParser *nalparser,
GstH264SPS *sps);
GST_CODEC_PARSERS_API
GstH264ParserResult gst_h264_parser_update_pps (GstH264NalParser *nalparser,
GstH264PPS *pps);
GST_CODEC_PARSERS_API
void gst_h264_nal_parser_free (GstH264NalParser *nalparser);