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/**************************************************************************
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 *
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 * Copyright 2010 Christian König
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 * All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sub license, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 **************************************************************************/
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#ifndef vl_vertex_buffers_h
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#define vl_vertex_buffers_h
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#include "pipe/p_state.h"
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#include "pipe/p_video_state.h"
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#include "vl_defines.h"
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#include "vl_types.h"
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/* vertex buffers act as a todo list
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 * uploading all the usefull informations to video ram
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 * so a vertex shader can work with them
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 */
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/* inputs to the vertex shaders */
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enum VS_INPUT
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{
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   VS_I_RECT = 0,
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   VS_I_VPOS = 1,
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   VS_I_BLOCK_NUM = 2,
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   VS_I_MV_TOP = 2,
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   VS_I_MV_BOTTOM = 3,
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   NUM_VS_INPUTS = 4
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};
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enum vl_mv_weight
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{
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   PIPE_VIDEO_MV_WEIGHT_MIN = 0,
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   PIPE_VIDEO_MV_WEIGHT_HALF = 128,
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   PIPE_VIDEO_MV_WEIGHT_MAX = 256
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};
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enum vl_field_select
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{
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   PIPE_VIDEO_FRAME = 0,
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   PIPE_VIDEO_TOP_FIELD = 1,
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   PIPE_VIDEO_BOTTOM_FIELD = 3,
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   /* TODO
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   PIPE_VIDEO_DUALPRIME
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   PIPE_VIDEO_16x8
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   */
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};
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struct vl_motionvector
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{
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   struct {
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      int16_t x, y;
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      int16_t field_select; /**< enum pipe_video_field_select */
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      int16_t weight;  /**< enum pipe_video_mv_weight  */
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   } top, bottom;
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};
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struct vl_ycbcr_block
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{
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   uint8_t x, y;
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   uint8_t intra;
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   uint8_t coding;
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   float block_num;
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};
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struct vl_vertex_buffer
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{
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   unsigned width, height;
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   struct {
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      struct pipe_resource  *resource;
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      struct pipe_transfer  *transfer;
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      struct vl_ycbcr_block *vertex_stream;
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   } ycbcr[VL_NUM_COMPONENTS];
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   struct {
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      struct pipe_resource   *resource;
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      struct pipe_transfer   *transfer;
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      struct vl_motionvector *vertex_stream;
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   } mv[VL_MAX_REF_FRAMES];
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};
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struct pipe_vertex_buffer vl_vb_upload_quads(struct pipe_context *pipe);
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struct pipe_vertex_buffer vl_vb_upload_pos(struct pipe_context *pipe, unsigned width, unsigned height);
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void *vl_vb_get_ves_ycbcr(struct pipe_context *pipe);
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void *vl_vb_get_ves_mv(struct pipe_context *pipe);
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bool vl_vb_init(struct vl_vertex_buffer *buffer,
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                struct pipe_context *pipe,
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                unsigned width, unsigned height);
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unsigned vl_vb_attributes_per_plock(struct vl_vertex_buffer *buffer);
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void vl_vb_map(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
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struct pipe_vertex_buffer vl_vb_get_ycbcr(struct vl_vertex_buffer *buffer, int component);
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struct vl_ycbcr_block *vl_vb_get_ycbcr_stream(struct vl_vertex_buffer *buffer, int component);
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struct pipe_vertex_buffer vl_vb_get_mv(struct vl_vertex_buffer *buffer, int ref_frame);
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unsigned vl_vb_get_mv_stream_stride(struct vl_vertex_buffer *buffer);
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struct vl_motionvector *vl_vb_get_mv_stream(struct vl_vertex_buffer *buffer, int ref_frame);
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void vl_vb_unmap(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
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void vl_vb_cleanup(struct vl_vertex_buffer *buffer);
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#endif /* vl_vertex_buffers_h */