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omxvideodec: implement propose_allocation

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Tell upstream about how many buffer we plan to use so they can adjust
their own number of buffers accordingly if needed.

Same logic as the existing gst_omx_video_enc_propose_allocation().

https://bugzilla.gnome.org/show_bug.cgi?id=795746
This commit is contained in:
Guillaume Desmottes 2018-04-26 12:29:16 +02:00
parent 84483f3d7a
commit 431eac07bf
1 changed files with 22 additions and 0 deletions
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22
omx/gstomxvideodec.c
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@ -74,6 +74,8 @@ static GstFlowReturn gst_omx_video_dec_handle_frame (GstVideoDecoder * decoder,
static GstFlowReturn gst_omx_video_dec_finish (GstVideoDecoder * decoder);
static gboolean gst_omx_video_dec_decide_allocation (GstVideoDecoder * bdec,
GstQuery * query);
static gboolean gst_omx_video_dec_propose_allocation (GstVideoDecoder * bdec,
GstQuery * query);
static GstFlowReturn gst_omx_video_dec_drain (GstVideoDecoder * decoder);
@ -178,6 +180,8 @@ gst_omx_video_dec_class_init (GstOMXVideoDecClass * klass)
video_decoder_class->drain = GST_DEBUG_FUNCPTR (gst_omx_video_dec_drain);
video_decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_omx_video_dec_decide_allocation);
video_decoder_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_omx_video_dec_propose_allocation);
klass->cdata.type = GST_OMX_COMPONENT_TYPE_FILTER;
klass->cdata.default_src_template_caps =
@ -3232,3 +3236,21 @@ gst_omx_video_dec_decide_allocation (GstVideoDecoder * bdec, GstQuery * query)
return TRUE;
}
static gboolean
gst_omx_video_dec_propose_allocation (GstVideoDecoder * bdec, GstQuery * query)
{
GstOMXVideoDec *self = GST_OMX_VIDEO_DEC (bdec);
guint size, num_buffers;
size = self->dec_in_port->port_def.nBufferSize;
num_buffers = self->dec_in_port->port_def.nBufferCountMin + 1;
GST_DEBUG_OBJECT (self,
"request at least %d buffers of size %d", num_buffers, size);
gst_query_add_allocation_pool (query, NULL, size, num_buffers, 0);
return
GST_VIDEO_DECODER_CLASS
(gst_omx_video_dec_parent_class)->propose_allocation (bdec, query);
}