hwcontext_videotoolbox.h 1.8 KB

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  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. #ifndef AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H
  19. #define AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H
  20. #include <stdint.h>
  21. #include <VideoToolbox/VideoToolbox.h>
  22. #include "pixfmt.h"
  23. /**
  24. * @file
  25. * An API-specific header for AV_HWDEVICE_TYPE_VIDEOTOOLBOX.
  26. *
  27. * This API currently does not support frame allocation, as the raw VideoToolbox
  28. * API does allocation, and FFmpeg itself never has the need to allocate frames.
  29. *
  30. * If the API user sets a custom pool, AVHWFramesContext.pool must return
  31. * AVBufferRefs whose data pointer is a CVImageBufferRef or CVPixelBufferRef.
  32. *
  33. * Currently AVHWDeviceContext.hwctx and AVHWFramesContext.hwctx are always
  34. * NULL.
  35. */
  36. /**
  37. * Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat.
  38. * Returns AV_PIX_FMT_NONE if no known equivalent was found.
  39. */
  40. enum AVPixelFormat av_map_videotoolbox_format_to_pixfmt(uint32_t cv_fmt);
  41. /**
  42. * Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format.
  43. * Returns 0 if no known equivalent was found.
  44. */
  45. uint32_t av_map_videotoolbox_format_from_pixfmt(enum AVPixelFormat pix_fmt);
  46. #endif /* AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H */