FFmpeg/libavutil/hwcontext_videotoolbox.h

/*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H
#define AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H

#include <stdint.h>

#include <VideoToolbox/VideoToolbox.h>

#include "pixfmt.h"

/**
 * @file
 * An API-specific header for AV_HWDEVICE_TYPE_VIDEOTOOLBOX.
 *
 * This API currently does not support frame allocation, as the raw VideoToolbox
 * API does allocation, and FFmpeg itself never has the need to allocate frames.
 *
 * If the API user sets a custom pool, AVHWFramesContext.pool must return
 * AVBufferRefs whose data pointer is a CVImageBufferRef or CVPixelBufferRef.
 *
 * Currently AVHWDeviceContext.hwctx and AVHWFramesContext.hwctx are always
 * NULL.
 */

/**
 * Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat.
 * Returns AV_PIX_FMT_NONE if no known equivalent was found.
 */
enum AVPixelFormat av_map_videotoolbox_format_to_pixfmt(uint32_t cv_fmt);

/**
 * Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format.
 * Returns 0 if no known equivalent was found.
 */
uint32_t av_map_videotoolbox_format_from_pixfmt(enum AVPixelFormat pix_fmt);

#endif /* AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H */
videotoolbox: add hwcontext support This adds tons of code for no other benefit than making VideoToolbox support conform with the new hwaccel API (using hw_device_ctx and hw_frames_ctx). Since VideoToolbox decoding does not actually require the user to allocate frames, the new code does mostly nothing. One benefit is that ffmpeg_videotoolbox.c can be dropped once generic hwaccel support for ffmpeg.c is merged from Libav. Does not consider VDA or VideoToolbox encoding. Fun fact: the frame transfer functions are copied from vaapi, as the mapping makes copying generic boilerplate. Mapping itself is not exported by the VT code, because I don't know how to test. 8 years ago			`/*`
			`* This file is part of FFmpeg.`
			`*`
			`* FFmpeg is free software; you can redistribute it and/or`
			`* modify it under the terms of the GNU Lesser General Public`
			`* License as published by the Free Software Foundation; either`
			`* version 2.1 of the License, or (at your option) any later version.`
			`*`
			`* FFmpeg is distributed in the hope that it will be useful,`
			`* but WITHOUT ANY WARRANTY; without even the implied warranty of`
			`* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU`
			`* Lesser General Public License for more details.`
			`*`
			`* You should have received a copy of the GNU Lesser General Public`
			`* License along with FFmpeg; if not, write to the Free Software`
			`* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA`
			`*/`

hwcontext_videotoolbox: fix fate-source Thanks to James Darnley for figuring out what the hell it wanted. 8 years ago			`#ifndef AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H`
			`#define AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H`
videotoolbox: add hwcontext support This adds tons of code for no other benefit than making VideoToolbox support conform with the new hwaccel API (using hw_device_ctx and hw_frames_ctx). Since VideoToolbox decoding does not actually require the user to allocate frames, the new code does mostly nothing. One benefit is that ffmpeg_videotoolbox.c can be dropped once generic hwaccel support for ffmpeg.c is merged from Libav. Does not consider VDA or VideoToolbox encoding. Fun fact: the frame transfer functions are copied from vaapi, as the mapping makes copying generic boilerplate. Mapping itself is not exported by the VT code, because I don't know how to test. 8 years ago
			`#include <stdint.h>`

			`#include <VideoToolbox/VideoToolbox.h>`

			`#include "pixfmt.h"`

			`/**`
			`* @file`
			`* An API-specific header for AV_HWDEVICE_TYPE_VIDEOTOOLBOX.`
			`*`
			`* This API currently does not support frame allocation, as the raw VideoToolbox`
			`* API does allocation, and FFmpeg itself never has the need to allocate frames.`
			`*`
			`* If the API user sets a custom pool, AVHWFramesContext.pool must return`
			`* AVBufferRefs whose data pointer is a CVImageBufferRef or CVPixelBufferRef.`
			`*`
			`* Currently AVHWDeviceContext.hwctx and AVHWFramesContext.hwctx are always`
			`* NULL.`
			`*/`

			`/**`
			`* Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat.`
			`* Returns AV_PIX_FMT_NONE if no known equivalent was found.`
			`*/`
			`enum AVPixelFormat av_map_videotoolbox_format_to_pixfmt(uint32_t cv_fmt);`

			`/**`
			`* Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format.`
			`* Returns 0 if no known equivalent was found.`
			`*/`
			`uint32_t av_map_videotoolbox_format_from_pixfmt(enum AVPixelFormat pix_fmt);`

hwcontext_videotoolbox: fix fate-source Thanks to James Darnley for figuring out what the hell it wanted. 8 years ago			`#endif /* AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H */`