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/*
* V4L2 Codec decoding example application
* Kamil Debski <k.debski@samsung.com>
*
* FIMC operations
*
* Copyright 2012 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <linux/videodev2.h>
#include <fcntl.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <unistd.h>
#include "common.h"
#include "fimc.h"
static char *dbg_type[2] = {"OUTPUT", "CAPTURE"};
static char *dbg_status[2] = {"ON", "OFF"};
int fimc_open(struct instance *i, char *name)
{
struct v4l2_capability cap;
int ret;
i->fimc.fd = open(name, O_RDWR, 0);
if (i->fimc.fd < 0) {
err("Failed to open FIMC: %s", name);
return -1;
}
memzero(cap);
ret = ioctl(i->fimc.fd, VIDIOC_QUERYCAP, &cap);
if (ret != 0) {
err("Failed to verify capabilities");
return -1;
}
dbg("FIMC Info (%s): driver=\"%s\" bus_info=\"%s\" card=\"%s\" fd=0x%x",
name, cap.driver, cap.bus_info, cap.card, i->fimc.fd);
if ( !(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE_MPLANE) ||
!(cap.capabilities & V4L2_CAP_VIDEO_OUTPUT_MPLANE) ||
!(cap.capabilities & V4L2_CAP_STREAMING)) {
err("Insufficient capabilities of FIMC device (is %s correct?)",
name);
return -1;
}
return 0;
}
void fimc_close(struct instance *i)
{
close(i->fimc.fd);
}
int fimc_sfmt(struct instance *i, int width, int height,
enum v4l2_buf_type type, unsigned long pix_fmt, int num_planes,
struct v4l2_plane_pix_format planes[])
{
struct v4l2_format fmt;
int ret;
int n;
memzero(fmt);
fmt.fmt.pix_mp.pixelformat = pix_fmt;
fmt.type = type;
fmt.fmt.pix_mp.width = width;
fmt.fmt.pix_mp.height = height;
fmt.fmt.pix_mp.num_planes = num_planes;
for (n = 0; n < num_planes; n++)
memcpy(&fmt.fmt.pix_mp.plane_fmt[n], &planes[n],
sizeof(*planes));
fmt.fmt.pix_mp.field = V4L2_FIELD_ANY;
ret = ioctl(i->fimc.fd, VIDIOC_S_FMT, &fmt);
if (ret != 0) {
err("Failed to SFMT on %s of FIMC",
dbg_type[type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE]);
return -1;
}
if (fmt.fmt.pix_mp.width != width ||
fmt.fmt.pix_mp.height != height ||
fmt.fmt.pix_mp.num_planes != num_planes ||
fmt.fmt.pix_mp.pixelformat != pix_fmt) {
err("Format was changed by FIMC so we abort operations");
return -1;
}
dbg("Successful SFMT on %s of FIMC (%dx%d)",
dbg_type[type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE],
width, height);
return 0;
}
int fimc_setup_output_from_mfc(struct instance *i)
{
struct v4l2_plane_pix_format planes[MFC_CAP_PLANES];
struct v4l2_requestbuffers reqbuf;
int ret;
int n;
memzero(planes);
for (n = 0; n < MFC_CAP_PLANES; n++) {
planes[n].sizeimage = i->mfc.cap_buf_size[n];
planes[n].bytesperline = i->mfc.cap_w;
}
ret = fimc_sfmt(i, i->mfc.cap_w, i->mfc.cap_h,
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE, V4L2_PIX_FMT_NV12MT,
MFC_CAP_PLANES, planes);
if (ret)
return ret;
memzero(reqbuf);
reqbuf.count = i->mfc.cap_buf_cnt;
reqbuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
reqbuf.memory = V4L2_MEMORY_USERPTR;
ret = ioctl(i->fimc.fd, VIDIOC_REQBUFS, &reqbuf);
if (ret) {
err("REQBUFS failed on OUTPUT of FIMC");
return -1;
}
dbg("Succesfully setup OUTPUT of FIMC");
return 0;
}
int fimc_setup_capture_from_fb(struct instance *i)
{
struct v4l2_plane_pix_format planes[MFC_OUT_PLANES];
struct v4l2_requestbuffers reqbuf;
unsigned long fmt;
int ret;
memzero(planes);
planes[0].sizeimage = i->fb.stride * i->fb.height;
planes[0].bytesperline = i->fb.stride;
switch (i->fb.bpp) {
case 16:
fmt = V4L2_PIX_FMT_RGB565;
break;
case 32:
fmt = V4L2_PIX_FMT_RGB32;
break;
default:
err("Framebuffer format in not recognized. Bpp=%d", i->fb.bpp);
return -1;
}
ret = fimc_sfmt(i, i->fb.width, i->fb.height,
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, fmt, 1, planes);
if (ret)
return -1;
memzero(reqbuf);
reqbuf.count = i->fb.buffers;
reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
reqbuf.memory = V4L2_MEMORY_USERPTR;
ret = ioctl(i->fimc.fd, VIDIOC_REQBUFS, &reqbuf);
if (ret) {
err("REQBUFS failed on CAPTURE of FIMC");
return -1;
}
dbg("Succesfully setup CAPTURE of FIMC");
return 0;
}
int fimc_stream(struct instance *i, enum v4l2_buf_type type, int status)
{
int ret;
ret = ioctl(i->fimc.fd, status, &type);
if (ret) {
err("Failed to change streaming on FIMC (type=%s, status=%s)",
dbg_type[type==V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE],
dbg_status[status==VIDIOC_STREAMOFF]);
return -1;
}
dbg("Stream %s on %s queue\n", dbg_status[status==VIDIOC_STREAMOFF],
dbg_type[type==V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE]);
return 0;
}
int fimc_dec_queue_buf_out_from_mfc(struct instance *i, int n)
{
struct v4l2_buffer buf;
struct v4l2_plane planes[MFC_CAP_PLANES];
int ret;
memzero(buf);
memzero(planes);
buf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
buf.memory = V4L2_MEMORY_USERPTR;
buf.index = n;
buf.m.planes = planes;
buf.length = MFC_CAP_PLANES;
buf.m.planes[0].bytesused = i->mfc.cap_buf_size[0];
buf.m.planes[0].length = i->mfc.cap_buf_size[0];
buf.m.planes[0].m.userptr = (unsigned long)i->mfc.cap_buf_addr[n][0];
buf.m.planes[1].bytesused = i->mfc.cap_buf_size[1];
buf.m.planes[1].length = i->mfc.cap_buf_size[1];
buf.m.planes[1].m.userptr = (unsigned long)i->mfc.cap_buf_addr[n][1];
ret = ioctl(i->fimc.fd, VIDIOC_QBUF, &buf);
if (ret) {
err("Failed to queue buffer (index=%d) on CAPTURE", n);
return -1;
}
dbg("Queued buffer on CAPTURE queue with index %d", n);
return 0;
}
int fimc_dec_queue_buf_cap_from_fb(struct instance *i, int n)
{
struct v4l2_buffer buf;
struct v4l2_plane planes[FIMC_CAP_PLANES];
int ret;
memzero(buf);
memzero(planes);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
buf.memory = V4L2_MEMORY_USERPTR;
buf.index = n;
buf.m.planes = planes;
buf.length = FIMC_CAP_PLANES;
buf.m.planes[0].bytesused = i->fb.size;
buf.m.planes[0].length = i->fb.size;
buf.m.planes[0].m.userptr = (unsigned long)i->fb.p[n];
ret = ioctl(i->fimc.fd, VIDIOC_QBUF, &buf);
if (ret) {
err("Failed to queue buffer (index=%d) on OUTPUT", n);
return -1;
}
dbg("Queued buffer on OUTPUT queue with index %d", n);
return 0;
}
int fimc_dec_dequeue_buf(struct instance *i, int *n, int nplanes, int type)
{
struct v4l2_buffer buf;
struct v4l2_plane planes[MFC_MAX_PLANES];
int ret;
memzero(buf);
memzero(planes);
buf.type = type;
buf.memory = V4L2_MEMORY_USERPTR;
buf.m.planes = planes;
buf.length = nplanes;
ret = ioctl(i->fimc.fd, VIDIOC_DQBUF, &buf);
if (ret) {
err("Failed to dequeue buffer");
return -1;
}
*n = buf.index;
dbg("Dequeued buffer with index %d on %s queue", buf.index,
dbg_type[type==V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE]);
return 0;
}
int fimc_dec_dequeue_buf_cap(struct instance *i, int *n)
{
return fimc_dec_dequeue_buf(i, n, 1, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
}
int fimc_dec_dequeue_buf_out(struct instance *i, int *n)
{
return fimc_dec_dequeue_buf(i, n, 2, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
}
int fimc_set_crop(struct instance *i, int type, int width, int height, int left,
int top)
{
struct v4l2_crop crop;
memzero(crop);
crop.type = type;
crop.c.width = width;
crop.c.height = height;
crop.c.left = left;
crop.c.top = top;
if (ioctl(i->fimc.fd, VIDIOC_S_CROP, &crop)) {
err("Failed to set CROP on %s",
dbg_type[type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE]);
return -1;
}
return 0;
}
|