169 lines
4.0 KiB
C
169 lines
4.0 KiB
C
/*
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* VDA HW acceleration
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*
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* copyright (c) 2011 Sebastien Zwickert
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*
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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 AVCODEC_VDA_H
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#define AVCODEC_VDA_H
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/**
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* @file
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* @ingroup lavc_codec_hwaccel_vda
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* Public libavcodec VDA header.
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*/
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#include <stdint.h>
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// emmintrin.h is unable to compile with -std=c99 -Werror=missing-prototypes
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// http://openradar.appspot.com/8026390
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#undef __GNUC_STDC_INLINE__
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#define Picture QuickdrawPicture
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#include <VideoDecodeAcceleration/VDADecoder.h>
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#undef Picture
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#include "libavcodec/version.h"
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// extra flags not defined in VDADecoder.h
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enum {
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kVDADecodeInfo_Asynchronous = 1UL << 0,
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kVDADecodeInfo_FrameDropped = 1UL << 1
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};
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/**
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* @defgroup lavc_codec_hwaccel_vda VDA
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* @ingroup lavc_codec_hwaccel
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*
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* @{
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*/
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/**
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* This structure is used to provide the necessary configurations and data
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* to the VDA FFmpeg HWAccel implementation.
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*
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* The application must make it available as AVCodecContext.hwaccel_context.
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*/
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struct vda_context {
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/**
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* VDA decoder object.
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*
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* - encoding: unused
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* - decoding: Set/Unset by libavcodec.
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*/
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VDADecoder decoder;
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/**
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* The Core Video pixel buffer that contains the current image data.
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*
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* encoding: unused
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* decoding: Set by libavcodec. Unset by user.
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*/
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CVPixelBufferRef cv_buffer;
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/**
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* Use the hardware decoder in synchronous mode.
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*
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* encoding: unused
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* decoding: Set by user.
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*/
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int use_sync_decoding;
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/**
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* The frame width.
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*
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* - encoding: unused
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* - decoding: Set/Unset by user.
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*/
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int width;
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/**
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* The frame height.
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*
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* - encoding: unused
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* - decoding: Set/Unset by user.
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*/
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int height;
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/**
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* The frame format.
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*
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* - encoding: unused
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* - decoding: Set/Unset by user.
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*/
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int format;
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/**
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* The pixel format for output image buffers.
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*
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* - encoding: unused
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* - decoding: Set/Unset by user.
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*/
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OSType cv_pix_fmt_type;
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/**
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* The current bitstream buffer.
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*
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* - encoding: unused
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* - decoding: Set/Unset by libavcodec.
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*/
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uint8_t *priv_bitstream;
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/**
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* The current size of the bitstream.
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*
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* - encoding: unused
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* - decoding: Set/Unset by libavcodec.
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*/
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int priv_bitstream_size;
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/**
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* The reference size used for fast reallocation.
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*
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* - encoding: unused
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* - decoding: Set/Unset by libavcodec.
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*/
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int priv_allocated_size;
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/**
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* Use av_buffer to manage buffer.
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* When the flag is set, the CVPixelBuffers returned by the decoder will
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* be released automatically, so you have to retain them if necessary.
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* Not setting this flag may cause memory leak.
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*
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* encoding: unused
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* decoding: Set by user.
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*/
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int use_ref_buffer;
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};
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/** Create the video decoder. */
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int ff_vda_create_decoder(struct vda_context *vda_ctx,
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uint8_t *extradata,
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int extradata_size);
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/** Destroy the video decoder. */
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int ff_vda_destroy_decoder(struct vda_context *vda_ctx);
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/**
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* @}
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*/
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#endif /* AVCODEC_VDA_H */
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