5146916a9c
Since those fields will be overridden by videotoolbox_start(), they should never be set by user, it can trigger memory leaks otherwise. Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
151 lines
4.6 KiB
C
151 lines
4.6 KiB
C
/*
|
|
* Videotoolbox hardware acceleration
|
|
*
|
|
* copyright (c) 2012 Sebastien Zwickert
|
|
*
|
|
* 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 AVCODEC_VIDEOTOOLBOX_H
|
|
#define AVCODEC_VIDEOTOOLBOX_H
|
|
|
|
/**
|
|
* @file
|
|
* @ingroup lavc_codec_hwaccel_videotoolbox
|
|
* Public libavcodec Videotoolbox header.
|
|
*/
|
|
|
|
/**
|
|
* @defgroup lavc_codec_hwaccel_videotoolbox VideoToolbox Decoder
|
|
* @ingroup lavc_codec_hwaccel
|
|
*
|
|
* Hardware accelerated decoding using VideoToolbox on Apple Platforms
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
|
|
#define Picture QuickdrawPicture
|
|
#include <VideoToolbox/VideoToolbox.h>
|
|
#undef Picture
|
|
|
|
#include "libavcodec/avcodec.h"
|
|
|
|
#include "libavutil/attributes.h"
|
|
|
|
/**
|
|
* This struct holds all the information that needs to be passed
|
|
* between the caller and libavcodec for initializing Videotoolbox decoding.
|
|
* Its size is not a part of the public ABI, it must be allocated with
|
|
* av_videotoolbox_alloc_context() and freed with av_free().
|
|
*/
|
|
typedef struct AVVideotoolboxContext {
|
|
/**
|
|
* Videotoolbox decompression session object.
|
|
*/
|
|
VTDecompressionSessionRef session;
|
|
|
|
#if FF_API_VT_OUTPUT_CALLBACK
|
|
/**
|
|
* The output callback that must be passed to the session.
|
|
* Set by av_videottoolbox_default_init()
|
|
*/
|
|
attribute_deprecated
|
|
VTDecompressionOutputCallback output_callback;
|
|
#endif
|
|
|
|
/**
|
|
* CVPixelBuffer Format Type that Videotoolbox will use for decoded frames.
|
|
* set by the caller. If this is set to 0, then no specific format is
|
|
* requested from the decoder, and its native format is output.
|
|
*/
|
|
OSType cv_pix_fmt_type;
|
|
|
|
/**
|
|
* CoreMedia Format Description that Videotoolbox will use to create the decompression session.
|
|
*/
|
|
CMVideoFormatDescriptionRef cm_fmt_desc;
|
|
|
|
/**
|
|
* CoreMedia codec type that Videotoolbox will use to create the decompression session.
|
|
*/
|
|
int cm_codec_type;
|
|
} AVVideotoolboxContext;
|
|
|
|
#if FF_API_VT_HWACCEL_CONTEXT
|
|
|
|
/**
|
|
* Allocate and initialize a Videotoolbox context.
|
|
*
|
|
* This function should be called from the get_format() callback when the caller
|
|
* selects the AV_PIX_FMT_VIDETOOLBOX format. The caller must then create
|
|
* the decoder object (using the output callback provided by libavcodec) that
|
|
* will be used for Videotoolbox-accelerated decoding.
|
|
*
|
|
* When decoding with Videotoolbox is finished, the caller must destroy the decoder
|
|
* object and free the Videotoolbox context using av_free().
|
|
*
|
|
* @return the newly allocated context or NULL on failure
|
|
* @deprecated Use AVCodecContext.hw_frames_ctx or hw_device_ctx instead.
|
|
*/
|
|
attribute_deprecated
|
|
AVVideotoolboxContext *av_videotoolbox_alloc_context(void);
|
|
|
|
/**
|
|
* This is a convenience function that creates and sets up the Videotoolbox context using
|
|
* an internal implementation.
|
|
*
|
|
* @param avctx the corresponding codec context
|
|
*
|
|
* @return >= 0 on success, a negative AVERROR code on failure
|
|
* @deprecated Use AVCodecContext.hw_frames_ctx or hw_device_ctx instead.
|
|
*/
|
|
attribute_deprecated
|
|
int av_videotoolbox_default_init(AVCodecContext *avctx);
|
|
|
|
/**
|
|
* This is a convenience function that creates and sets up the Videotoolbox context using
|
|
* an internal implementation.
|
|
*
|
|
* @param avctx the corresponding codec context
|
|
* @param vtctx the Videotoolbox context to use
|
|
*
|
|
* @return >= 0 on success, a negative AVERROR code on failure
|
|
* @deprecated Use AVCodecContext.hw_frames_ctx or hw_device_ctx instead.
|
|
*/
|
|
attribute_deprecated
|
|
int av_videotoolbox_default_init2(AVCodecContext *avctx, AVVideotoolboxContext *vtctx);
|
|
|
|
/**
|
|
* This function must be called to free the Videotoolbox context initialized with
|
|
* av_videotoolbox_default_init().
|
|
*
|
|
* @param avctx the corresponding codec context
|
|
* @deprecated Use AVCodecContext.hw_frames_ctx or hw_device_ctx instead.
|
|
*/
|
|
attribute_deprecated
|
|
void av_videotoolbox_default_free(AVCodecContext *avctx);
|
|
|
|
#endif /* FF_API_VT_HWACCEL_CONTEXT */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* AVCODEC_VIDEOTOOLBOX_H */
|