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/**************************************************************************
*
* Copyright 2009 Younes Manton.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef PIPE_VIDEO_CONTEXT_H
#define PIPE_VIDEO_CONTEXT_H
#ifdef __cplusplus
extern "C" {
#endif
#include <pipe/p_video_state.h>
/* XXX: Move to an appropriate place */
#define PIPE_CAP_DECODE_TARGET_PREFERRED_FORMAT 256
struct pipe_screen;
struct pipe_buffer;
struct pipe_surface;
struct pipe_macroblock;
struct pipe_picture_desc;
struct pipe_fence_handle;
struct pipe_video_buffer;
/**
* Gallium video rendering context
*/
struct pipe_video_context
{
struct pipe_screen *screen;
enum pipe_video_profile profile;
enum pipe_video_chroma_format chroma_format;
unsigned width;
unsigned height;
void *priv; /**< context private data (for DRI for example) */
/**
* Query an integer-valued capability/parameter/limit
* \param param one of PIPE_CAP_x
*/
int (*get_param)(struct pipe_video_context *vpipe, int param);
/**
* Check if the given pipe_format is supported as a texture or
* drawing surface.
*/
boolean (*is_format_supported)(struct pipe_video_context *vpipe,
enum pipe_format format,
unsigned usage);
/**
* destroy context, all buffers must be freed before calling this
*/
void (*destroy)(struct pipe_video_context *vpipe);
/**
* create a surface of a texture
*/
struct pipe_surface *(*create_surface)(struct pipe_video_context *vpipe,
struct pipe_resource *resource,
const struct pipe_surface *templ);
/**
* sampler view handling, used for subpictures for example
*/
/*@{*/
/**
* create a sampler view of a texture, for subpictures for example
*/
struct pipe_sampler_view *(*create_sampler_view)(struct pipe_video_context *vpipe,
struct pipe_resource *resource,
const struct pipe_sampler_view *templ);
/**
* upload image data to a sampler
*/
void (*upload_sampler)(struct pipe_video_context *vpipe,
struct pipe_sampler_view *dst,
const struct pipe_box *dst_box,
const void *src, unsigned src_stride,
unsigned src_x, unsigned src_y);
/**
* clear a sampler with a specific rgba color
*/
void (*clear_sampler)(struct pipe_video_context *vpipe,
struct pipe_sampler_view *dst,
const struct pipe_box *dst_box,
const float *rgba);
/**
* Creates a buffer as decoding target
*/
struct pipe_video_buffer *(*create_buffer)(struct pipe_video_context *vpipe);
/**
* Picture decoding and displaying
*/
#if 0
void (*decode_bitstream)(struct pipe_video_context *vpipe,
unsigned num_bufs,
struct pipe_buffer **bitstream_buf);
#endif
/**
* render a video buffer to the frontbuffer
*/
void (*render_picture)(struct pipe_video_context *vpipe,
struct pipe_video_buffer *src_surface,
struct pipe_video_rect *src_area,
enum pipe_mpeg12_picture_type picture_type,
struct pipe_surface *dst_surface,
struct pipe_video_rect *dst_area,
struct pipe_fence_handle **fence);
/*@}*/
/**
* Parameter-like states (or properties)
*/
/*@{*/
/**
* set overlay samplers
*/
void (*set_picture_layers)(struct pipe_video_context *vpipe,
struct pipe_sampler_view *layers[],
struct pipe_sampler_view *palettes[],
struct pipe_video_rect *src_rects[],
struct pipe_video_rect *dst_rects[],
unsigned num_layers);
void (*set_csc_matrix)(struct pipe_video_context *vpipe, const float *mat);
/* TODO: Interface for scaling modes, post-processing, etc. */
/*@}*/
};
struct pipe_video_buffer
{
struct pipe_video_context* context;
/**
* destroy this video buffer
*/
void (*destroy)(struct pipe_video_buffer *buffer);
/**
* map the buffer into memory before calling add_macroblocks
*/
void (*map)(struct pipe_video_buffer *buffer);
/**
* add macroblocks to buffer for decoding
*/
void (*add_macroblocks)(struct pipe_video_buffer *buffer,
unsigned num_macroblocks,
struct pipe_macroblock *macroblocks);
/**
* unmap buffer before flushing
*/
void (*unmap)(struct pipe_video_buffer *buffer);
/**
* flush buffer to video hardware
*/
void (*flush)(struct pipe_video_buffer *buffer,
struct pipe_video_buffer *ref_frames[2],
struct pipe_fence_handle **fence);
};
#ifdef __cplusplus
}
#endif
#endif /* PIPE_VIDEO_CONTEXT_H */
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