blob: 306ae13b376ec25a6271edd5623eda5d453e72cf [file] [log] [blame]
* Video Acceleration API (video decoding)
* HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
* Copyright (C) 2008-2009 Splitted-Desktop Systems
* This file is part of FFmpeg.
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#include <va/va.h>
#include "vaapi.h"
#include "avcodec.h"
#include "internal.h"
* @addtogroup VAAPI_Decoding
* @{
typedef struct {
VADisplay display; ///< Windowing system dependent handle
VAConfigID config_id; ///< Configuration ID
VAContextID context_id; ///< Context ID (video decode pipeline)
VABufferID pic_param_buf_id; ///< Picture parameter buffer
VABufferID iq_matrix_buf_id; ///< Inverse quantiser matrix buffer
VABufferID bitplane_buf_id; ///< Bitplane buffer (for VC-1 decoding)
VABufferID *slice_buf_ids; ///< Slice parameter/data buffers
unsigned int n_slice_buf_ids; ///< Number of effective slice buffers
unsigned int slice_buf_ids_alloc; ///< Number of allocated slice buffers
void *slice_params; ///< Pointer to slice parameter buffers
unsigned int slice_param_size; ///< Size of a slice parameter element
unsigned int slice_params_alloc; ///< Number of allocated slice parameters
unsigned int slice_count; ///< Number of slices currently filled in
const uint8_t *slice_data; ///< Pointer to slice data buffer base
unsigned int slice_data_size; ///< Current size of slice data
} FFVAContext;
/** Extract vaapi_context from an AVCodecContext */
static inline FFVAContext *ff_vaapi_get_context(AVCodecContext *avctx)
return avctx->internal->hwaccel_priv_data;
/** Extract VASurfaceID from an AVFrame */
static inline VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
return (uintptr_t)pic->data[3];
/** Common AVHWAccel.init() implementation */
int ff_vaapi_context_init(AVCodecContext *avctx);
/** Common AVHWAccel.uninit() implementation */
int ff_vaapi_context_fini(AVCodecContext *avctx);
/** Common AVHWAccel.end_frame() implementation */
void ff_vaapi_common_end_frame(AVCodecContext *avctx);
/** Allocate a new picture parameter buffer */
void *ff_vaapi_alloc_pic_param(FFVAContext *vactx, unsigned int size);
/** Allocate a new IQ matrix buffer */
void *ff_vaapi_alloc_iq_matrix(FFVAContext *vactx, unsigned int size);
/** Allocate a new bit-plane buffer */
uint8_t *ff_vaapi_alloc_bitplane(FFVAContext *vactx, uint32_t size);
* Allocate a new slice descriptor for the input slice.
* @param vactx the VA API context
* @param buffer the slice data buffer base
* @param size the size of the slice in bytes
* @return the newly allocated slice parameter
VASliceParameterBufferBase *ff_vaapi_alloc_slice(FFVAContext *vactx, const uint8_t *buffer, uint32_t size);
int ff_vaapi_mpeg_end_frame(AVCodecContext *avctx);
int ff_vaapi_commit_slices(FFVAContext *vactx);
int ff_vaapi_render_picture(FFVAContext *vactx, VASurfaceID surface);
/* @} */