2 * Video Acceleration API (video decoding)
3 * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
5 * Copyright (C) 2008-2009 Splitted-Desktop Systems
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #ifndef AVCODEC_VAAPI_INTERNAL_H
25 #define AVCODEC_VAAPI_INTERNAL_H
30 #include "mpegvideo.h"
33 * @addtogroup VAAPI_Decoding
39 VADisplay display; ///< Windowing system dependent handle
40 VAConfigID config_id; ///< Configuration ID
41 VAContextID context_id; ///< Context ID (video decode pipeline)
42 VABufferID pic_param_buf_id; ///< Picture parameter buffer
43 VABufferID iq_matrix_buf_id; ///< Inverse quantiser matrix buffer
44 VABufferID bitplane_buf_id; ///< Bitplane buffer (for VC-1 decoding)
45 VABufferID *slice_buf_ids; ///< Slice parameter/data buffers
46 unsigned int n_slice_buf_ids; ///< Number of effective slice buffers
47 unsigned int slice_buf_ids_alloc; ///< Number of allocated slice buffers
48 void *slice_params; ///< Pointer to slice parameter buffers
49 unsigned int slice_param_size; ///< Size of a slice parameter element
50 unsigned int slice_params_alloc; ///< Number of allocated slice parameters
51 unsigned int slice_count; ///< Number of slices currently filled in
52 const uint8_t *slice_data; ///< Pointer to slice data buffer base
53 unsigned int slice_data_size; ///< Current size of slice data
56 /** Extract vaapi_context from an AVCodecContext */
57 static inline FFVAContext *ff_vaapi_get_context(AVCodecContext *avctx)
59 return avctx->internal->hwaccel_priv_data;
62 /** Extract VASurfaceID from an AVFrame */
63 static inline VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
65 return (uintptr_t)pic->data[3];
68 /** Common AVHWAccel.init() implementation */
69 int ff_vaapi_context_init(AVCodecContext *avctx);
71 /** Common AVHWAccel.uninit() implementation */
72 int ff_vaapi_context_fini(AVCodecContext *avctx);
74 /** Common AVHWAccel.end_frame() implementation */
75 void ff_vaapi_common_end_frame(AVCodecContext *avctx);
77 /** Allocate a new picture parameter buffer */
78 void *ff_vaapi_alloc_pic_param(FFVAContext *vactx, unsigned int size);
80 /** Allocate a new IQ matrix buffer */
81 void *ff_vaapi_alloc_iq_matrix(FFVAContext *vactx, unsigned int size);
83 /** Allocate a new bit-plane buffer */
84 uint8_t *ff_vaapi_alloc_bitplane(FFVAContext *vactx, uint32_t size);
87 * Allocate a new slice descriptor for the input slice.
89 * @param vactx the VA API context
90 * @param buffer the slice data buffer base
91 * @param size the size of the slice in bytes
92 * @return the newly allocated slice parameter
94 VASliceParameterBufferBase *ff_vaapi_alloc_slice(FFVAContext *vactx, const uint8_t *buffer, uint32_t size);
96 int ff_vaapi_mpeg_end_frame(AVCodecContext *avctx);
97 int ff_vaapi_commit_slices(FFVAContext *vactx);
98 int ff_vaapi_render_picture(FFVAContext *vactx, VASurfaceID surface);
102 #endif /* AVCODEC_VAAPI_INTERNAL_H */