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 AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H 20 #define AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H 21 22 #include <stdint.h> 23 24 #include <VideoToolbox/VideoToolbox.h> 25 26 #include "pixfmt.h" 27 28 /** 29 * @file 30 * An API-specific header for AV_HWDEVICE_TYPE_VIDEOTOOLBOX. 31 * 32 * This API supports frame allocation using a native CVPixelBufferPool 33 * instead of an AVBufferPool. 34 * 35 * If the API user sets a custom pool, AVHWFramesContext.pool must return 36 * AVBufferRefs whose data pointer is a CVImageBufferRef or CVPixelBufferRef. 37 * Note that the underlying CVPixelBuffer could be retained by OS frameworks 38 * depending on application usage, so it is preferable to let CoreVideo manage 39 * the pool using the default implementation. 40 * 41 * Currently AVHWDeviceContext.hwctx and AVHWFramesContext.hwctx are always 42 * NULL. 43 */ 44 45 /** 46 * Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat. 47 * Returns AV_PIX_FMT_NONE if no known equivalent was found. 48 */ 49 enum AVPixelFormat av_map_videotoolbox_format_to_pixfmt(uint32_t cv_fmt); 50 51 /** 52 * Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format. 53 * Returns 0 if no known equivalent was found. 54 */ 55 uint32_t av_map_videotoolbox_format_from_pixfmt(enum AVPixelFormat pix_fmt); 56 57 /** 58 * Same as av_map_videotoolbox_format_from_pixfmt function, but can map and 59 * return full range pixel formats via a flag. 60 */ 61 uint32_t av_map_videotoolbox_format_from_pixfmt2(enum AVPixelFormat pix_fmt, bool full_range); 62 63 /** 64 * Convert an AVChromaLocation to a VideoToolbox/CoreVideo chroma location string. 65 * Returns 0 if no known equivalent was found. 66 */ 67 CFStringRef av_map_videotoolbox_chroma_loc_from_av(enum AVChromaLocation loc); 68 69 /** 70 * Convert an AVColorSpace to a VideoToolbox/CoreVideo color matrix string. 71 * Returns 0 if no known equivalent was found. 72 */ 73 CFStringRef av_map_videotoolbox_color_matrix_from_av(enum AVColorSpace space); 74 75 /** 76 * Convert an AVColorPrimaries to a VideoToolbox/CoreVideo color primaries string. 77 * Returns 0 if no known equivalent was found. 78 */ 79 CFStringRef av_map_videotoolbox_color_primaries_from_av(enum AVColorPrimaries pri); 80 81 /** 82 * Convert an AVColorTransferCharacteristic to a VideoToolbox/CoreVideo color transfer 83 * function string. 84 * Returns 0 if no known equivalent was found. 85 */ 86 CFStringRef av_map_videotoolbox_color_trc_from_av(enum AVColorTransferCharacteristic trc); 87 88 /** 89 * Update a CVPixelBufferRef's metadata to based on an AVFrame. 90 * Returns 0 if no known equivalent was found. 91 */ 92 int av_vt_pixbuf_set_attachments(void *log_ctx, 93 CVPixelBufferRef pixbuf, const struct AVFrame *src); 94 95 #endif /* AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H */ 96