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97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H
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#define AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H
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#include <stdint.h>
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#include <VideoToolbox/VideoToolbox.h>
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#include "frame.h"
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#include "pixfmt.h"
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/**
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* @file
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* An API-specific header for AV_HWDEVICE_TYPE_VIDEOTOOLBOX.
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*
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* This API supports frame allocation using a native CVPixelBufferPool
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* instead of an AVBufferPool.
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*
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* If the API user sets a custom pool, AVHWFramesContext.pool must return
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* AVBufferRefs whose data pointer is a CVImageBufferRef or CVPixelBufferRef.
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* Note that the underlying CVPixelBuffer could be retained by OS frameworks
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* depending on application usage, so it is preferable to let CoreVideo manage
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* the pool using the default implementation.
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*
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* Currently AVHWDeviceContext.hwctx and AVHWFramesContext.hwctx are always
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* NULL.
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*/
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/**
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* Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat.
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* Returns AV_PIX_FMT_NONE if no known equivalent was found.
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*/
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enum AVPixelFormat av_map_videotoolbox_format_to_pixfmt(uint32_t cv_fmt);
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/**
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* Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format.
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* Returns 0 if no known equivalent was found.
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*/
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uint32_t av_map_videotoolbox_format_from_pixfmt(enum AVPixelFormat pix_fmt);
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/**
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* Same as av_map_videotoolbox_format_from_pixfmt function, but can map and
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* return full range pixel formats via a flag.
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*/
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uint32_t av_map_videotoolbox_format_from_pixfmt2(enum AVPixelFormat pix_fmt, bool full_range);
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/**
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* Convert an AVChromaLocation to a VideoToolbox/CoreVideo chroma location string.
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* Returns 0 if no known equivalent was found.
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*/
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CFStringRef av_map_videotoolbox_chroma_loc_from_av(enum AVChromaLocation loc);
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/**
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* Convert an AVColorSpace to a VideoToolbox/CoreVideo color matrix string.
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* Returns 0 if no known equivalent was found.
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*/
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CFStringRef av_map_videotoolbox_color_matrix_from_av(enum AVColorSpace space);
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/**
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* Convert an AVColorPrimaries to a VideoToolbox/CoreVideo color primaries string.
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* Returns 0 if no known equivalent was found.
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*/
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CFStringRef av_map_videotoolbox_color_primaries_from_av(enum AVColorPrimaries pri);
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/**
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* Convert an AVColorTransferCharacteristic to a VideoToolbox/CoreVideo color transfer
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* function string.
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* Returns 0 if no known equivalent was found.
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*/
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CFStringRef av_map_videotoolbox_color_trc_from_av(enum AVColorTransferCharacteristic trc);
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/**
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* Update a CVPixelBufferRef's metadata to based on an AVFrame.
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* Returns 0 if no known equivalent was found.
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*/
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int av_vt_pixbuf_set_attachments(void *log_ctx,
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CVPixelBufferRef pixbuf, const struct AVFrame *src);
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#endif /* AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H */
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