tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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picture.h (4469B)

      1 /*
      2 * Copyright © 2018-2021, VideoLAN and dav1d authors
      3 * Copyright © 2018, Two Orioles, LLC
      4 * All rights reserved.
      5 *
      6 * Redistribution and use in source and binary forms, with or without
      7 * modification, are permitted provided that the following conditions are met:
      8 *
      9 * 1. Redistributions of source code must retain the above copyright notice, this
     10 *    list of conditions and the following disclaimer.
     11 *
     12 * 2. Redistributions in binary form must reproduce the above copyright notice,
     13 *    this list of conditions and the following disclaimer in the documentation
     14 *    and/or other materials provided with the distribution.
     15 *
     16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
     20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26 */
     27 
     28 #ifndef DAV1D_SRC_PICTURE_H
     29 #define DAV1D_SRC_PICTURE_H
     30 
     31 #include <stdatomic.h>
     32 
     33 #include "src/thread.h"
     34 #include "dav1d/picture.h"
     35 
     36 #include "src/thread_data.h"
     37 #include "src/ref.h"
     38 
     39 enum PlaneType {
     40    PLANE_TYPE_Y,
     41    PLANE_TYPE_UV,
     42    PLANE_TYPE_BLOCK,
     43    PLANE_TYPE_ALL,
     44 };
     45 
     46 enum PictureFlags {
     47    PICTURE_FLAG_NEW_SEQUENCE =       1 << 0,
     48    PICTURE_FLAG_NEW_OP_PARAMS_INFO = 1 << 1,
     49    PICTURE_FLAG_NEW_TEMPORAL_UNIT  = 1 << 2,
     50 };
     51 
     52 typedef struct Dav1dThreadPicture {
     53    Dav1dPicture p;
     54    int visible;
     55    // This can be set for inter frames, non-key intra frames, or for invisible
     56    // keyframes that have not yet been made visible using the show-existing-frame
     57    // mechanism.
     58    int showable;
     59    enum PictureFlags flags;
     60    // [0] block data (including segmentation map and motion vectors)
     61    // [1] pixel data
     62    atomic_uint *progress;
     63 } Dav1dThreadPicture;
     64 
     65 typedef struct Dav1dPictureBuffer {
     66    void *data;
     67    struct Dav1dPictureBuffer *next;
     68 } Dav1dPictureBuffer;
     69 
     70 /*
     71 * Allocate a picture with custom border size.
     72 */
     73 int dav1d_thread_picture_alloc(Dav1dContext *c, Dav1dFrameContext *f, const int bpc);
     74 
     75 /**
     76 * Allocate a picture with identical metadata to an existing picture.
     77 * The width is a separate argument so this function can be used for
     78 * super-res, where the width changes, but everything else is the same.
     79 * For the more typical use case of allocating a new image of the same
     80 * dimensions, use src->p.w as width.
     81 */
     82 int dav1d_picture_alloc_copy(Dav1dContext *c, Dav1dPicture *dst, const int w,
     83                             const Dav1dPicture *src);
     84 
     85 /**
     86 * Create a copy of a picture.
     87 */
     88 void dav1d_picture_ref(Dav1dPicture *dst, const Dav1dPicture *src);
     89 void dav1d_thread_picture_ref(Dav1dThreadPicture *dst,
     90                              const Dav1dThreadPicture *src);
     91 void dav1d_thread_picture_move_ref(Dav1dThreadPicture *dst,
     92                                   Dav1dThreadPicture *src);
     93 void dav1d_thread_picture_unref(Dav1dThreadPicture *p);
     94 
     95 /**
     96 * Move a picture reference.
     97 */
     98 void dav1d_picture_move_ref(Dav1dPicture *dst, Dav1dPicture *src);
     99 
    100 int dav1d_default_picture_alloc(Dav1dPicture *p, void *cookie);
    101 void dav1d_default_picture_release(Dav1dPicture *p, void *cookie);
    102 void dav1d_picture_unref_internal(Dav1dPicture *p);
    103 
    104 struct itut_t35_ctx_context {
    105    Dav1dITUTT35 *itut_t35;
    106    size_t n_itut_t35;
    107    Dav1dRef ref;
    108 };
    109 
    110 void dav1d_picture_free_itut_t35(const uint8_t *data, void *user_data);
    111 void dav1d_picture_copy_props(Dav1dPicture *p,
    112                              Dav1dContentLightLevel *content_light, Dav1dRef *content_light_ref,
    113                              Dav1dMasteringDisplay *mastering_display, Dav1dRef *mastering_display_ref,
    114                              Dav1dITUTT35 *itut_t35, Dav1dRef *itut_t35_ref, size_t n_itut_t35,
    115                              const Dav1dDataProps *props);
    116 
    117 /**
    118 * Get event flags from picture flags.
    119 */
    120 enum Dav1dEventFlags dav1d_picture_get_event_flags(const Dav1dThreadPicture *p);
    121 
    122 #endif /* DAV1D_SRC_PICTURE_H */