libavcodec/vt_internal.h

   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 AVCODEC_VT_INTERNAL_H
  20 #define AVCODEC_VT_INTERNAL_H
  21
  22 #include "avcodec.h"
  23 #include "videotoolbox.h"
  24
  25 typedef struct VTContext {
  26     // The current bitstream buffer.
  27     uint8_t                     *bitstream;
  28
  29     // The current size of the bitstream.
  30     int                         bitstream_size;
  31
  32     // The reference size used for fast reallocation.
  33     int                         allocated_size;
  34
  35     // The core video buffer
  36     CVImageBufferRef            frame;
  37
  38     // Current dummy frames context (depends on exact CVImageBufferRef params).
  39     struct AVBufferRef         *cached_hw_frames_ctx;
  40
  41     // Non-NULL if the new hwaccel API is used. This is only a separate struct
  42     // to ease compatibility with the old API.
  43     struct AVVideotoolboxContext *vt_ctx;
  44
  45     // Current H264 parameters (used to trigger decoder restart on SPS changes).
  46     uint8_t                     sps[3];
  47     bool                        reconfig_needed;
  48
  49     void *logctx;
  50 } VTContext;
  51
  52 int ff_videotoolbox_alloc_frame(AVCodecContext *avctx, AVFrame *frame);
  53 int ff_videotoolbox_common_init(AVCodecContext *avctx);
  54 int ff_videotoolbox_frame_params(AVCodecContext *avctx,
  55                                  AVBufferRef *hw_frames_ctx);
  56 int ff_videotoolbox_buffer_copy(VTContext *vtctx,
  57                                 const uint8_t *buffer,
  58                                 uint32_t size);
  59 int ff_videotoolbox_buffer_append(VTContext *vtctx,
  60                                   const uint8_t *buffer,
  61                                   uint32_t size);
  62 int ff_videotoolbox_uninit(AVCodecContext *avctx);
  63 int ff_videotoolbox_h264_start_frame(AVCodecContext *avctx,
  64                                      const uint8_t *buffer,
  65                                      uint32_t size);
  66 int ff_videotoolbox_h264_decode_slice(AVCodecContext *avctx,
  67                                       const uint8_t *buffer,
  68                                       uint32_t size);
  69 int ff_videotoolbox_common_end_frame(AVCodecContext *avctx, AVFrame *frame);
  70 CFDataRef ff_videotoolbox_av1c_extradata_create(AVCodecContext *avctx);
  71 CFDataRef ff_videotoolbox_avcc_extradata_create(AVCodecContext *avctx);
  72 CFDataRef ff_videotoolbox_hvcc_extradata_create(AVCodecContext *avctx);
  73 CFDataRef ff_videotoolbox_vpcc_extradata_create(AVCodecContext *avctx);
  74
  75 #endif /* AVCODEC_VT_INTERNAL_H */