mpp/inc/rk_venc_ref.h

25  * frame mangement.
27  * The reference frame is defined into two type: long-term reference frame and
28  * short-refernce frame (lt_ref and st_ref).
30  * The lt_ref can be only indexed by long-term reference frame index (lt_idx).
33  * MppEncRefMode defined the way for user to reference the required frame.
36  *  REF_TO_PREV_REF_FRM   - refer to previous reference frame in encode order (No matter Lt or St)
37  *  REF_TO_PREV_ST_REF    - refer to previous short-term reference frame
38  *  REF_TO_PREV_LT_REF    - refer to previous long-term reference frame
39  *  REF_TO_PREV_INTRA     - refer to previous Intra / IDR frame
40  *  REF_TO_ST_REF_SETUP   - refer to refernce frame defined in StRefSetup
43  *  REF_TO_TEMPORAL_LAYER - refer to previous reference frame with temporal id argument
44  *  REF_TO_LT_REF_IDX     - refer to long-term reference frame with lt_ref_idx argument
45  *  REF_TO_ST_PREV_N_REF    - refer to short-term reference frame with diff frame_num argument
48  *  REF_TO_ST_REF_SETUP   - use corresponding mode of original short-term reference frame
51  *  REF_TO_LT_REF_SETUP   - indicate that this frame will be overwrited by long-term config
57  * 1. When one frame is marked as long-term reference frame it will be kept in cpb until
58  *    it is replaced by other frame with the same lt_idx or IDR frame.
59  * 2. When one frame is marked as short-term reference frame it will be inert into cpb when
61  *    reference frame excess the cpb size limit the oldest short-term frame will be removed.
67 /* max 4 long-term reference frame */
73  * 1. Intra / IDR frame config
79  *    mode for auto long-term reference frame generation. The encoder will
80  *    mark frame to be long-term reference frame with given interval.
83  *    The long-term reference frame index is unique identifier for a long-term
84  *    reference frame.
85  *    The max long-term reference frame index should NOT larger than
89  *    When lt_gap is zero the long-term reference frame generation is disabled.
91  *    reference frame will be generated for error recovery or smart hierarchy.
94  *    The lt_delay is the delay time for generation of long-term reference frame.
95  *    The start point of lt_delay is the IDR/intra frame genertaed by igop.
97  *    2.4 ref_mode: Long-term refernce frame reference mode
98  *    NOTE: temporal id of longterm reference frame is always zero.
101  *    Sequence has only one lt_ref 0 and setup one long-term reference frame
102  *    every 300 frame.
109  *    frame   0 ...... 299 300 301 ...... 599 600 601
112  *    Sequence has lt_ref from 0 to 2 and setup a long-term reference frame
113  *    every 100 frame.
130  *    frame   0 ... 99 100 101 ... 199 200 201 ... 299 300 301
136  *    The is_non_ref indicated the current frame is reference frame or not.
139  *    The temporal id of the current frame configure.
141  *    3.3 ref_mode: short-term refernce frame reference mode
144  *    The repeat time of the short-term reference frame configure.
145  *    The overall frame count with the same config is repeat + 1.
185     RK_S32              lt_idx;         /* lt_idx of the reference frame */
186     RK_S32              temporal_id;    /* temporal_id of the reference frame */
190     RK_S32              lt_delay;       /* delay offset to igop start frame */
232  * reset all the reference frame in cpb.