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| author | Austin Yuan <shengquan.yuan@intel.com> | 2014-05-20 16:16:40 +0800 |
|---|---|---|
| committer | Austin Yuan <shengquan.yuan@intel.com> | 2014-05-20 16:16:40 +0800 |
| commit | 753ec174c07ab1389f57ab4ab16e91d517219bae (patch) | |
| tree | 760d6096c3f77820bbb968327c1435bebf6aa5a7 | |
| parent | 51901e340cc467a2d562491121e0de38f5a066fe (diff) | |
| download | libva-753ec174c07ab1389f57ab4ab16e91d517219bae.tar.gz | |
va.h: add data structure for the structure of temporal layer encoding
Add VAEncMiscParameterTemporalLayerStructure
number_of_layers: how many layers
periodicity/layer_id is used to inform driver the layer structure
so that driver can prepare for the bitrate control.
These information can be concluded from VAEncMiscParameter and
VAEncPictureParameterBuffer, but it needs a round of frames encoding
and might be too later for bitrate control.
They are the conveyance of webRTC definition at
(http://tools.ietf.org/html/draft-garcia-simulcast-and-layered-video-webrtc-00#page-5 )
From zhangfei.zhang@intel.com
Signed-off-by: Austin Yuan <shengquan.yuan@intel.com>
| -rw-r--r-- | va/va.h | 13 |
1 files changed, 13 insertions, 0 deletions
@@ -1400,6 +1400,8 @@ typedef enum VAEncMiscParameterTypeROI = 10, /** \brief Buffer type used for Cyclic intra refresh */ VAEncMiscParameterTypeCIR = 11, + /** \brief Buffer type used for temporal layer structure */ + VAEncMiscParameterTypeTemporalLayerStructure = 12, /* Intel specific types start at 1001 */ /* VAEntrypointEncFEIIntel */ @@ -1460,6 +1462,17 @@ typedef struct _VAEncMiscParameterBuffer unsigned int data[0]; } VAEncMiscParameterBuffer; +/** \brief Temporal layer Structure*/ +typedef struct _VAEncMiscParameterTemporalLayerStructure +{ + /* The number of temporal layers */ + unsigned int number_of_layers; + /* this is Length of the sequence defining frame layer membership. Should be 1-32 */ + unsigned int periodicity; + /*This is Array indicating the layer id for each frame in a sequence of length ts_periodicity.*/ + unsigned int layer_id[32]; +} VAEncMiscParameterTemporalLayerStructure; + /** \brief Rate control parameters */ typedef struct _VAEncMiscParameterRateControl |