/*
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* v4l2_buffer_proxy.cpp - v4l2 buffer proxy
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*
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* Copyright (c) 2014-2015 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 "v4l2_buffer_proxy.h"
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#include "v4l2_device.h"
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namespace XCam {
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V4l2Buffer::V4l2Buffer (const struct v4l2_buffer &buf, const struct v4l2_format &format)
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{
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_buf = buf;
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_format = format;
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_queued = false;
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}
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V4l2Buffer::~V4l2Buffer ()
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{
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}
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uint8_t *
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V4l2Buffer::map ()
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{
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if (_buf.memory == V4L2_MEMORY_DMABUF)
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return NULL;
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return (uint8_t *)(_buf.m.userptr);
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}
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bool
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V4l2Buffer::unmap ()
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{
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return true;
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}
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int
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V4l2Buffer::get_fd ()
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{
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return _expbuf_fd;
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}
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V4l2BufferProxy::V4l2BufferProxy (SmartPtr<V4l2Buffer> &buf, SmartPtr<V4l2Device> &device)
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: BufferProxy (buf)
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, _device (device)
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{
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VideoBufferInfo info;
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struct timeval ts = buf->get_buf().timestamp;
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uint32_t sequence = buf->get_buf().sequence;
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v4l2_format_to_video_info (buf->get_format(), info);
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set_video_info (info);
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set_timestamp (XCAM_TIMEVAL_2_USEC (ts));
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set_sequence (sequence);
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}
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V4l2BufferProxy::~V4l2BufferProxy ()
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{
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XCAM_LOG_DEBUG ("~V4l2BufferProxy");
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SmartPtr<BufferData> data = get_buffer_data ();
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SmartPtr<V4l2Buffer> v4l2_data = data.dynamic_cast_ptr<V4l2Buffer> ();
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if (_device.ptr () && v4l2_data.ptr ())
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_device->return_buffer (v4l2_data);
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XCAM_LOG_DEBUG ("v4l2 buffer released");
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}
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void
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V4l2BufferProxy::v4l2_format_to_video_info (
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const struct v4l2_format &format, VideoBufferInfo &info)
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{
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if (format.type == V4L2_BUF_TYPE_META_CAPTURE ||
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format.type == V4L2_BUF_TYPE_META_OUTPUT) {
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info.format = format.fmt.meta.dataformat;
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} else {
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info.format = format.fmt.pix.pixelformat;
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}
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info.color_bits = 8;
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info.width = format.fmt.pix.width;
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info.height = format.fmt.pix.height;
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info.aligned_width = 0;
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info.aligned_height = 0;
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info.size = format.fmt.pix.sizeimage;
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switch (info.format) {
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case V4L2_PIX_FMT_NV12: // 420
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case V4L2_PIX_FMT_NV21:
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info.components = 2;
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info.strides [0] = format.fmt.pix.bytesperline * 2 / 3;
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info.strides [1] = info.strides [0];
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info.offsets[0] = 0;
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info.offsets[1] = info.strides [0] * format.fmt.pix.height;
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break;
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case V4L2_PIX_FMT_YUV422P: // 422 Planar
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info.components = 3;
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info.strides [0] = format.fmt.pix.bytesperline / 2;
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info.strides [1] = info.strides [0] / 2 ;
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info.strides [2] = info.strides [0] / 2 ;
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info.offsets[0] = 0;
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info.offsets[1] = info.strides [0] * format.fmt.pix.height;
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info.offsets[2] = info.offsets[1] + info.strides [1] * format.fmt.pix.height;
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break;
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case V4L2_PIX_FMT_YUYV: // 422
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info.components = 1;
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info.strides [0] = format.fmt.pix.bytesperline;
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info.offsets[0] = 0;
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info.aligned_width = info.strides [0] / 2;
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break;
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case V4L2_PIX_FMT_SBGGR10:
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case V4L2_PIX_FMT_SGBRG10:
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case V4L2_PIX_FMT_SGRBG10:
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case V4L2_PIX_FMT_SRGGB10:
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info.color_bits = 10;
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info.components = 1;
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info.strides [0] = format.fmt.pix.bytesperline;
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info.offsets[0] = 0;
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break;
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case V4L2_PIX_FMT_SBGGR12:
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case V4L2_PIX_FMT_SGBRG12:
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case V4L2_PIX_FMT_SGRBG12:
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case V4L2_PIX_FMT_SRGGB12:
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info.color_bits = 12;
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info.components = 1;
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info.strides [0] = format.fmt.pix.bytesperline;
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info.offsets[0] = 0;
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break;
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case V4L2_META_FMT_RK_ISP1_PARAMS:
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case V4L2_META_FMT_RK_ISP1_STAT_3A:
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case V4L2_META_FMT_RK_ISPP_PARAMS:
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case V4L2_META_FMT_RK_ISPP_STAT:
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case V4L2_META_FMT_RK_ISP1_STAT_LUMA :
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case V4L2_PIX_FMT_FBC2:
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case V4L2_PIX_FMT_FBC0:
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// TODO
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break;
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default:
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XCAM_LOG_WARNING (
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"unknown v4l2 format(%s) to video info",
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xcam_fourcc_to_string (format.fmt.pix.pixelformat));
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break;
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}
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if (!info.aligned_width)
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info.aligned_width = info.strides [0];
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if (!info.aligned_height)
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info.aligned_height = info.height;
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}
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const struct v4l2_buffer &
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V4l2BufferProxy::get_v4l2_buf ()
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{
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SmartPtr<BufferData> &data = get_buffer_data ();
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SmartPtr<V4l2Buffer> v4l2_data = data.dynamic_cast_ptr<V4l2Buffer> ();
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XCAM_ASSERT (v4l2_data.ptr ());
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return v4l2_data->get_buf ();
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}
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};
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