libavcodec/vda.c

   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include "config.h"
  20
  21 #include "libavutil/mem.h"
  22
  23 #include "vda.h"
  24 #include "vda_internal.h"
  25
  26 #if CONFIG_H264_VDA_HWACCEL
  27 AVVDAContext *av_vda_alloc_context(void)
  28 {
  29     AVVDAContext *ret = av_mallocz(sizeof(*ret));
  30
  31     if (ret) {
  32         ret->output_callback = ff_vda_output_callback;
  33         ret->cv_pix_fmt_type = kCVPixelFormatType_422YpCbCr8;
  34     }
  35
  36     return ret;
  37 }
  38
  39 int av_vda_default_init(AVCodecContext *avctx)
  40 {
  41     return av_vda_default_init2(avctx, NULL);
  42 }
  43
  44 int av_vda_default_init2(AVCodecContext *avctx, AVVDAContext *vdactx)
  45 {
  46     avctx->hwaccel_context = vdactx ?: av_vda_alloc_context();
  47     if (!avctx->hwaccel_context)
  48         return AVERROR(ENOMEM);
  49     return ff_vda_default_init(avctx);
  50 }
  51
  52 void av_vda_default_free(AVCodecContext *avctx)
  53 {
  54     ff_vda_default_free(avctx);
  55     av_freep(&avctx->hwaccel_context);
  56 }
  57
  58 void ff_vda_default_free(AVCodecContext *avctx)
  59 {
  60     AVVDAContext *vda = avctx->hwaccel_context;
  61     if (vda && vda->decoder)
  62         VDADecoderDestroy(vda->decoder);
  63 }
  64
  65 #else
  66 AVVDAContext *av_vda_alloc_context(void)
  67 {
  68     return NULL;
  69 }
  70
  71 int av_vda_default_init(AVCodecContext *avctx)
  72 {
  73     return AVERROR(ENOSYS);
  74 }
  75
  76 void av_vda_default_free(AVCodecContext *ctx)
  77 {
  78 }
  79 #endif