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mpegvideoparse: Only add meta if downstream needs it

Browse source 
It's not perfect, because in the cases where upstream doesn't
initiate an allocation query, we won't know.
This commit is contained in:
Edward Hervey 2012-12-23 01:54:52 +01:00
parent 14e7e78b7a
commit 2296296a51
2 changed files with 50 additions and 21 deletions
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70
gst/videoparsers/gstmpegvideoparse.c
View file

@ -76,6 +76,8 @@ static GstCaps *gst_mpegv_parse_get_caps (GstBaseParse * parse,
GstCaps * filter);
static GstFlowReturn gst_mpegv_parse_pre_push_frame (GstBaseParse * parse,
GstBaseParseFrame * frame);
static gboolean gst_mpegv_parse_sink_query (GstBaseParse * parse,
GstQuery * query);
static void gst_mpegv_parse_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
@ -165,6 +167,7 @@ gst_mpegv_parse_class_init (GstMpegvParseClass * klass)
parse_class->get_sink_caps = GST_DEBUG_FUNCPTR (gst_mpegv_parse_get_caps);
parse_class->pre_push_frame =
GST_DEBUG_FUNCPTR (gst_mpegv_parse_pre_push_frame);
parse_class->sink_query = GST_DEBUG_FUNCPTR (gst_mpegv_parse_sink_query);
}
static void
@ -197,6 +200,7 @@ gst_mpegv_parse_reset (GstMpegvParse * mpvparse)
mpvparse->profile = 0;
mpvparse->update_caps = TRUE;
mpvparse->send_codec_tag = TRUE;
mpvparse->send_mpeg_meta = TRUE;
gst_buffer_replace (&mpvparse->config, NULL);
memset (&mpvparse->sequencehdr, 0, sizeof (mpvparse->sequencehdr));
@ -212,6 +216,26 @@ gst_mpegv_parse_reset (GstMpegvParse * mpvparse)
mpvparse->quantmatrext_updated = FALSE;
}
static gboolean
gst_mpegv_parse_sink_query (GstBaseParse * parse, GstQuery * query)
{
gboolean res;
GstMpegvParse *mpvparse = GST_MPEGVIDEO_PARSE (parse);
res = GST_BASE_PARSE_CLASS (parent_class)->sink_query (parse, query);
if (res && GST_QUERY_TYPE (query) == GST_QUERY_ALLOCATION) {
mpvparse->send_mpeg_meta =
gst_query_find_allocation_meta (query, GST_MPEG_VIDEO_META_API_TYPE,
NULL);
GST_DEBUG_OBJECT (parse, "Downstream can handle GstMpegVideo GstMeta : %d",
mpvparse->send_mpeg_meta);
}
return res;
}
static gboolean
gst_mpegv_parse_start (GstBaseParse * parse)
{
@ -340,6 +364,8 @@ gst_mpegv_parse_process_config (GstMpegvParse * mpvparse, GstBuffer * buf,
return TRUE;
}
/* FIXME : Move these functions to libgstcodecparser for usage by
* more elements/code */
#ifndef GST_DISABLE_GST_DEBUG
static const gchar *
picture_start_code_name (guint8 psc)
@ -405,6 +431,7 @@ parse_packet_extension (GstMpegvParse * mpvparse, GstBuffer * buf, guint off)
gst_buffer_map (buf, &map, GST_MAP_READ);
/* FIXME : WE ARE ASSUMING IT IS A *PICTURE* EXTENSION */
if (gst_mpeg_video_parse_picture_extension (&mpvparse->picext, map.data,
map.size, off)) {
mpvparse->frame_repeat_count = 1;
@ -866,28 +893,29 @@ gst_mpegv_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
/* usual clipping applies */
frame->flags |= GST_BASE_PARSE_FRAME_FLAG_CLIP;
if (mpvparse->seqhdr_updated)
seq_hdr = &mpvparse->sequencehdr;
if (mpvparse->seqext_updated)
seq_ext = &mpvparse->sequenceext;
if (mpvparse->seqdispext_updated)
disp_ext = &mpvparse->sequencedispext;
if (mpvparse->picext_updated)
pic_ext = &mpvparse->picext;
if (mpvparse->quantmatrext_updated)
quant_ext = &mpvparse->quantmatrext;
pic_hdr = &mpvparse->pichdr;
GST_DEBUG_OBJECT (mpvparse,
"Adding GstMpegVideoMeta (slice_count:%d, slice_offset:%d)",
mpvparse->slice_count, mpvparse->slice_offset);
meta =
gst_buffer_add_mpeg_video_meta (frame->
out_buffer ? frame->out_buffer : frame->buffer, seq_hdr, seq_ext,
disp_ext, pic_hdr, pic_ext, quant_ext);
meta->num_slices = mpvparse->slice_count;
meta->slice_offset = mpvparse->slice_offset;
if (mpvparse->send_mpeg_meta) {
if (mpvparse->seqhdr_updated)
seq_hdr = &mpvparse->sequencehdr;
if (mpvparse->seqext_updated)
seq_ext = &mpvparse->sequenceext;
if (mpvparse->seqdispext_updated)
disp_ext = &mpvparse->sequencedispext;
if (mpvparse->picext_updated)
pic_ext = &mpvparse->picext;
if (mpvparse->quantmatrext_updated)
quant_ext = &mpvparse->quantmatrext;
pic_hdr = &mpvparse->pichdr;
GST_DEBUG_OBJECT (mpvparse,
"Adding GstMpegVideoMeta (slice_count:%d, slice_offset:%d)",
mpvparse->slice_count, mpvparse->slice_offset);
meta =
gst_buffer_add_mpeg_video_meta (frame->out_buffer ? frame->
out_buffer : frame->buffer, seq_hdr, seq_ext, disp_ext, pic_hdr,
pic_ext, quant_ext);
meta->num_slices = mpvparse->slice_count;
meta->slice_offset = mpvparse->slice_offset;
}
return GST_FLOW_OK;
}

1
gst/videoparsers/gstmpegvideoparse.h
View file

@ -69,6 +69,7 @@ struct _GstMpegvParse {
guint slice_offset;
gboolean update_caps;
gboolean send_codec_tag;
gboolean send_mpeg_meta;
GstBuffer *config;
guint8 profile;