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      1 /**************************************************************************
      2  *
      3  * Copyright 2010 Christian Knig
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 #ifndef vl_vertex_buffers_h
     28 #define vl_vertex_buffers_h
     29 
     30 #include "pipe/p_state.h"
     31 #include "pipe/p_video_state.h"
     32 
     33 #include "vl_defines.h"
     34 #include "vl_types.h"
     35 
     36 /* vertex buffers act as a todo list
     37  * uploading all the usefull informations to video ram
     38  * so a vertex shader can work with them
     39  */
     40 
     41 /* inputs to the vertex shaders */
     42 enum VS_INPUT
     43 {
     44    VS_I_RECT = 0,
     45    VS_I_VPOS = 1,
     46 
     47    VS_I_BLOCK_NUM = 2,
     48 
     49    VS_I_MV_TOP = 2,
     50    VS_I_MV_BOTTOM = 3,
     51 
     52    NUM_VS_INPUTS = 4
     53 };
     54 
     55 enum vl_mv_weight
     56 {
     57    PIPE_VIDEO_MV_WEIGHT_MIN = 0,
     58    PIPE_VIDEO_MV_WEIGHT_HALF = 128,
     59    PIPE_VIDEO_MV_WEIGHT_MAX = 256
     60 };
     61 
     62 enum vl_field_select
     63 {
     64    PIPE_VIDEO_FRAME = 0,
     65    PIPE_VIDEO_TOP_FIELD = 1,
     66    PIPE_VIDEO_BOTTOM_FIELD = 3,
     67 
     68    /* TODO
     69    PIPE_VIDEO_DUALPRIME
     70    PIPE_VIDEO_16x8
     71    */
     72 };
     73 
     74 struct vl_motionvector
     75 {
     76    struct {
     77       int16_t x, y;
     78       int16_t field_select; /**< enum pipe_video_field_select */
     79       int16_t weight;  /**< enum pipe_video_mv_weight  */
     80    } top, bottom;
     81 };
     82 
     83 struct vl_ycbcr_block
     84 {
     85    uint8_t x, y;
     86    uint8_t intra;
     87    uint8_t coding;
     88    float block_num;
     89 };
     90 
     91 struct vl_vertex_buffer
     92 {
     93    unsigned width, height;
     94 
     95    struct {
     96       struct pipe_resource  *resource;
     97       struct pipe_transfer  *transfer;
     98       struct vl_ycbcr_block *vertex_stream;
     99    } ycbcr[VL_NUM_COMPONENTS];
    100 
    101    struct {
    102       struct pipe_resource   *resource;
    103       struct pipe_transfer   *transfer;
    104       struct vl_motionvector *vertex_stream;
    105    } mv[VL_MAX_REF_FRAMES];
    106 };
    107 
    108 struct pipe_vertex_buffer vl_vb_upload_quads(struct pipe_context *pipe);
    109 
    110 struct pipe_vertex_buffer vl_vb_upload_pos(struct pipe_context *pipe, unsigned width, unsigned height);
    111 
    112 void *vl_vb_get_ves_ycbcr(struct pipe_context *pipe);
    113 
    114 void *vl_vb_get_ves_mv(struct pipe_context *pipe);
    115 
    116 bool vl_vb_init(struct vl_vertex_buffer *buffer,
    117                 struct pipe_context *pipe,
    118                 unsigned width, unsigned height);
    119 
    120 unsigned vl_vb_attributes_per_plock(struct vl_vertex_buffer *buffer);
    121 
    122 void vl_vb_map(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
    123 
    124 struct pipe_vertex_buffer vl_vb_get_ycbcr(struct vl_vertex_buffer *buffer, int component);
    125 
    126 struct vl_ycbcr_block *vl_vb_get_ycbcr_stream(struct vl_vertex_buffer *buffer, int component);
    127 
    128 struct pipe_vertex_buffer vl_vb_get_mv(struct vl_vertex_buffer *buffer, int ref_frame);
    129 
    130 unsigned vl_vb_get_mv_stream_stride(struct vl_vertex_buffer *buffer);
    131 
    132 struct vl_motionvector *vl_vb_get_mv_stream(struct vl_vertex_buffer *buffer, int ref_frame);
    133 
    134 void vl_vb_unmap(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
    135 
    136 void vl_vb_cleanup(struct vl_vertex_buffer *buffer);
    137 
    138 #endif /* vl_vertex_buffers_h */
    139