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145 lines
3.5 KiB
C
145 lines
3.5 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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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#include <pthread.h>
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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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/**
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* This structure is used to store a decoded frame information and data.
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*/
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typedef struct vda_frame {
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/**
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* The PTS of the frame.
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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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int64_t pts;
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/**
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* The CoreVideo buffer that contains the decoded data.
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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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CVPixelBufferRef cv_buffer;
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/**
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* A pointer to the next frame.
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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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struct vda_frame *next_frame;
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} vda_frame;
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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 Libav 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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* VDA frames queue ordered by presentation timestamp.
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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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vda_frame *queue;
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/**
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* Mutex for locking queue operations.
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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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pthread_mutex_t queue_mutex;
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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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/** 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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/** Return the top frame of the queue. */
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vda_frame *ff_vda_queue_pop(struct vda_context *vda_ctx);
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/** Release the given frame. */
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void ff_vda_release_vda_frame(vda_frame *frame);
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#endif /* AVCODEC_VDA_H */
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