bb10d3d5a1
Add a hwdevice type for use with V4L2 Request API stateless decoding. AVV4L2RequestFramesContext is expected to be filled with a V4L2 coded pixel format and optional codec-specific extended controls before an AVHWFramesContext is initialized. Once initialized AVV4L2RequestFramesContextInternal describe the opened V4L2 stateless decoder session, with details about media/video file descriptors, formats of CAPTURE/OUTPUT queues and buffer pools for creating CAPTURE/OUTPUT buffers. AVHWFramesContext.pool defaults to create frame descriptors around a CAPTURE buffer, and frames are returned with AVFrame.data[0] pointing to a AVDRMFrameDescriptor and AVFrame.data[1] the CAPTURE buffer index. Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/*
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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 AVUTIL_HWCONTEXT_V4L2REQUEST_INTERNAL_H
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#define AVUTIL_HWCONTEXT_V4L2REQUEST_INTERNAL_H
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#include "buffer.h"
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#include "hwcontext_v4l2request.h"
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/**
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* @file
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* FFmpeg internal API-specific header for AV_HWDEVICE_TYPE_V4L2REQUEST.
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*/
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/**
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* Internal context for the initialized V4L2 stateless decoder/encoder session.
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*/
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struct AVV4L2RequestFramesContextInternal {
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/**
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* Media device file descriptor of the initialized session.
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*/
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int media_fd;
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/**
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* Video device file descriptor of the initialized session.
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*/
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int video_fd;
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/**
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* Details of the initialized CAPTURE and OUTPUT queues.
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*/
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struct {
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/**
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* V4L2 buffer format.
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*/
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struct v4l2_format format;
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/**
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* V4L2 buffer capabilities flags.
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*/
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uint32_t capabilities;
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/**
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* Buffer pool of allocated V4L2 buffers.
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*
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* AVBufferRef.data points to a struct v4l2_buffer for the created buffer.
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*/
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AVBufferPool *pool;
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} capture, output;
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};
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#endif /* AVUTIL_HWCONTEXT_V4L2REQUEST_INTERNAL_H */
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