/*
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* dma_video_buffer.cpp - dma buffer
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*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Author: Wind Yuan <feng.yuan@intel.com>
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*/
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#include "dma_video_buffer.h"
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namespace XCam {
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class DmaVideoBufferPriv
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: public DmaVideoBuffer
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{
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friend SmartPtr<DmaVideoBuffer> external_buf_to_dma_buf (XCamVideoBuffer *buf);
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protected:
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DmaVideoBufferPriv (const VideoBufferInfo &info, XCamVideoBuffer *buf);
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~DmaVideoBufferPriv ();
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private:
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XCamVideoBuffer *_external_buf;
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};
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DmaVideoBuffer::DmaVideoBuffer (const VideoBufferInfo &info, int dma_fd, bool need_close_fd)
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: VideoBuffer (info)
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, _dma_fd (dma_fd)
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, _need_close_fd (need_close_fd)
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{
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XCAM_ASSERT (dma_fd >= 0);
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}
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DmaVideoBuffer::~DmaVideoBuffer ()
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{
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if (_need_close_fd && _dma_fd > 0)
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close (_dma_fd);
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}
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uint8_t *
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DmaVideoBuffer::map ()
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{
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XCAM_ASSERT (false && "DmaVideoBuffer::map not supported");
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return NULL;
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}
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bool
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DmaVideoBuffer::unmap ()
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{
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XCAM_ASSERT (false && "DmaVideoBuffer::map not supported");
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return false;
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}
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int
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DmaVideoBuffer::get_fd ()
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{
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return _dma_fd;
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}
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DmaVideoBufferPriv::DmaVideoBufferPriv (const VideoBufferInfo &info, XCamVideoBuffer *buf)
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: DmaVideoBuffer (info, xcam_video_buffer_get_fd (buf), false)
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, _external_buf (buf)
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{
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if (buf->ref)
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xcam_video_buffer_ref (buf);
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}
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DmaVideoBufferPriv::~DmaVideoBufferPriv ()
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{
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if (_external_buf && _external_buf->unref && _external_buf->ref)
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xcam_video_buffer_unref (_external_buf);
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}
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SmartPtr<DmaVideoBuffer>
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external_buf_to_dma_buf (XCamVideoBuffer *buf)
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{
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VideoBufferInfo buf_info;
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SmartPtr<DmaVideoBuffer> video_buffer;
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XCAM_FAIL_RETURN (
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ERROR, buf, NULL,
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"external_buf_to_dma_buf failed since buf is NULL");
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int buffer_fd = 0;
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if (buf->get_fd)
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buffer_fd = xcam_video_buffer_get_fd(buf);
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XCAM_FAIL_RETURN (
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ERROR, buffer_fd > 0, NULL,
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"external_buf_to_dma_buf failed, can't get buf file-handle");
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buf_info.init (buf->info.format, buf->info.width, buf->info.height,
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buf->info.aligned_width, buf->info.aligned_height, buf->info.size);
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video_buffer = new DmaVideoBufferPriv (buf_info, buf);
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XCAM_ASSERT (video_buffer.ptr ());
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return video_buffer;
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}
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}
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