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hwcontext_vaapi.h (3787B)

      1 /*
      2 * This file is part of FFmpeg.
      3 *
      4 * FFmpeg is free software; you can redistribute it and/or
      5 * modify it under the terms of the GNU Lesser General Public
      6 * License as published by the Free Software Foundation; either
      7 * version 2.1 of the License, or (at your option) any later version.
      8 *
      9 * FFmpeg is distributed in the hope that it will be useful,
     10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12 * Lesser General Public License for more details.
     13 *
     14 * You should have received a copy of the GNU Lesser General Public
     15 * License along with FFmpeg; if not, write to the Free Software
     16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     17 */
     18 
     19 #ifndef AVUTIL_HWCONTEXT_VAAPI_H
     20 #define AVUTIL_HWCONTEXT_VAAPI_H
     21 
     22 #include <va/va.h>
     23 
     24 /**
     25 * @file
     26 * API-specific header for AV_HWDEVICE_TYPE_VAAPI.
     27 *
     28 * Dynamic frame pools are supported, but note that any pool used as a render
     29 * target is required to be of fixed size in order to be be usable as an
     30 * argument to vaCreateContext().
     31 *
     32 * For user-allocated pools, AVHWFramesContext.pool must return AVBufferRefs
     33 * with the data pointer set to a VASurfaceID.
     34 */
     35 
     36 enum {
     37    /**
     38     * The quirks field has been set by the user and should not be detected
     39     * automatically by av_hwdevice_ctx_init().
     40     */
     41    AV_VAAPI_DRIVER_QUIRK_USER_SET = (1 << 0),
     42    /**
     43     * The driver does not destroy parameter buffers when they are used by
     44     * vaRenderPicture().  Additional code will be required to destroy them
     45     * separately afterwards.
     46     */
     47    AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS = (1 << 1),
     48 
     49    /**
     50     * The driver does not support the VASurfaceAttribMemoryType attribute,
     51     * so the surface allocation code will not try to use it.
     52     */
     53    AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE = (1 << 2),
     54 
     55    /**
     56     * The driver does not support surface attributes at all.
     57     * The surface allocation code will never pass them to surface allocation,
     58     * and the results of the vaQuerySurfaceAttributes() call will be faked.
     59     */
     60    AV_VAAPI_DRIVER_QUIRK_SURFACE_ATTRIBUTES = (1 << 3),
     61 };
     62 
     63 /**
     64 * VAAPI connection details.
     65 *
     66 * Allocated as AVHWDeviceContext.hwctx
     67 */
     68 typedef struct AVVAAPIDeviceContext {
     69    /**
     70     * The VADisplay handle, to be filled by the user.
     71     */
     72    VADisplay display;
     73    /**
     74     * Driver quirks to apply - this is filled by av_hwdevice_ctx_init(),
     75     * with reference to a table of known drivers, unless the
     76     * AV_VAAPI_DRIVER_QUIRK_USER_SET bit is already present.  The user
     77     * may need to refer to this field when performing any later
     78     * operations using VAAPI with the same VADisplay.
     79     */
     80    unsigned int driver_quirks;
     81 } AVVAAPIDeviceContext;
     82 
     83 /**
     84 * VAAPI-specific data associated with a frame pool.
     85 *
     86 * Allocated as AVHWFramesContext.hwctx.
     87 */
     88 typedef struct AVVAAPIFramesContext {
     89    /**
     90     * Set by the user to apply surface attributes to all surfaces in
     91     * the frame pool.  If null, default settings are used.
     92     */
     93    VASurfaceAttrib *attributes;
     94    int           nb_attributes;
     95    /**
     96     * The surfaces IDs of all surfaces in the pool after creation.
     97     * Only valid if AVHWFramesContext.initial_pool_size was positive.
     98     * These are intended to be used as the render_targets arguments to
     99     * vaCreateContext().
    100     */
    101    VASurfaceID     *surface_ids;
    102    int           nb_surfaces;
    103 } AVVAAPIFramesContext;
    104 
    105 /**
    106 * VAAPI hardware pipeline configuration details.
    107 *
    108 * Allocated with av_hwdevice_hwconfig_alloc().
    109 */
    110 typedef struct AVVAAPIHWConfig {
    111    /**
    112     * ID of a VAAPI pipeline configuration.
    113     */
    114    VAConfigID config_id;
    115 } AVVAAPIHWConfig;
    116 
    117 #endif /* AVUTIL_HWCONTEXT_VAAPI_H */