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/*
* v4l2 backend to the VFW Capture filter
*
* Copyright 2005 Maarten Lankhorst
* Copyright 2019 Zebediah Figura
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define BIONIC_IOCTL_NO_SIGNEDNESS_OVERLOAD /* work around ioctl breakage on Android */
#include "config.h"
#include "wine/port.h"
#define COBJMACROS
#include <stdarg.h>
#include <stdio.h>
#include <fcntl.h>
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include <errno.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_ASM_TYPES_H
#include <asm/types.h>
#endif
#ifdef HAVE_LINUX_VIDEODEV2_H
#include <linux/videodev2.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "windef.h"
#include "winbase.h"
#include "wtypes.h"
#include "wingdi.h"
#include "winuser.h"
#include "dshow.h"
#include "vfwmsgs.h"
#include "amvideo.h"
#include "wine/debug.h"
#include "qcap_main.h"
#include "capture.h"
WINE_DEFAULT_DEBUG_CHANNEL(qcap);
#ifdef HAVE_LINUX_VIDEODEV2_H
WINE_DECLARE_DEBUG_CHANNEL(winediag);
static typeof(open) *video_open = open;
static typeof(close) *video_close = close;
static typeof(ioctl) *video_ioctl = ioctl;
static typeof(read) *video_read = read;
static BOOL video_init(void)
{
#ifdef SONAME_LIBV4L2
static void *video_lib;
if (video_lib)
return TRUE;
if (!(video_lib = dlopen(SONAME_LIBV4L2, RTLD_NOW)))
return FALSE;
video_open = dlsym(video_lib, "v4l2_open");
video_close = dlsym(video_lib, "v4l2_close");
video_ioctl = dlsym(video_lib, "v4l2_ioctl");
video_read = dlsym(video_lib, "v4l2_read");
return TRUE;
#else
return FALSE;
#endif
}
struct caps
{
__u32 pixelformat;
AM_MEDIA_TYPE media_type;
VIDEOINFOHEADER video_info;
VIDEO_STREAM_CONFIG_CAPS config;
};
struct _Capture
{
const struct caps *current_caps;
struct caps *caps;
LONG caps_count;
struct strmbase_source *pin;
int fd, mmap;
FILTER_STATE state;
HANDLE thread, run_event;
};
static int xioctl(int fd, int request, void * arg)
{
int r;
do {
r = video_ioctl (fd, request, arg);
} while (-1 == r && EINTR == errno);
return r;
}
HRESULT qcap_driver_destroy(Capture *device)
{
if (device->fd != -1)
video_close(device->fd);
if (device->caps_count)
heap_free(device->caps);
heap_free(device);
return S_OK;
}
static const struct caps *find_caps(Capture *device, const AM_MEDIA_TYPE *mt)
{
const VIDEOINFOHEADER *video_info = (VIDEOINFOHEADER *)mt->pbFormat;
LONG index;
if (mt->cbFormat < sizeof(VIDEOINFOHEADER) || !video_info)
return NULL;
for (index = 0; index < device->caps_count; index++)
{
struct caps *caps = &device->caps[index];
if (IsEqualGUID(&mt->formattype, &caps->media_type.formattype)
&& video_info->bmiHeader.biWidth == caps->video_info.bmiHeader.biWidth
&& video_info->bmiHeader.biHeight == caps->video_info.bmiHeader.biHeight)
return caps;
}
return NULL;
}
HRESULT qcap_driver_check_format(Capture *device, const AM_MEDIA_TYPE *mt)
{
TRACE("device %p, mt %p.\n", device, mt);
if (!mt)
return E_POINTER;
if (!IsEqualGUID(&mt->majortype, &MEDIATYPE_Video))
return E_FAIL;
if (find_caps(device, mt))
return S_OK;
return E_FAIL;
}
static BOOL set_caps(Capture *device, const struct caps *caps)
{
struct v4l2_format format = {0};
LONG width, height;
width = caps->video_info.bmiHeader.biWidth;
height = caps->video_info.bmiHeader.biHeight;
format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
format.fmt.pix.pixelformat = caps->pixelformat;
format.fmt.pix.width = width;
format.fmt.pix.height = height;
if (xioctl(device->fd, VIDIOC_S_FMT, &format) == -1
|| format.fmt.pix.pixelformat != caps->pixelformat
|| format.fmt.pix.width != width
|| format.fmt.pix.height != height)
{
ERR("Failed to set pixel format: %s.\n", strerror(errno));
return FALSE;
}
device->current_caps = caps;
return TRUE;
}
HRESULT qcap_driver_set_format(Capture *device, AM_MEDIA_TYPE *mt)
{
const struct caps *caps;
caps = find_caps(device, mt);
if (!caps)
return E_FAIL;
if (device->current_caps == caps)
return S_OK;
if (!set_caps(device, caps))
return VFW_E_TYPE_NOT_ACCEPTED;
return S_OK;
}
HRESULT qcap_driver_get_format(const Capture *device, AM_MEDIA_TYPE **mt)
{
*mt = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
if (!*mt)
return E_OUTOFMEMORY;
return CopyMediaType(*mt, &device->current_caps->media_type);
}
static __u32 v4l2_cid_from_qcap_property(VideoProcAmpProperty property)
{
switch (property)
{
case VideoProcAmp_Brightness:
return V4L2_CID_BRIGHTNESS;
case VideoProcAmp_Contrast:
return V4L2_CID_CONTRAST;
case VideoProcAmp_Hue:
return V4L2_CID_HUE;
case VideoProcAmp_Saturation:
return V4L2_CID_SATURATION;
default:
FIXME("Unhandled property %d.\n", property);
return 0;
}
}
HRESULT qcap_driver_get_prop_range(Capture *device, VideoProcAmpProperty property,
LONG *min, LONG *max, LONG *step, LONG *default_value, LONG *flags)
{
struct v4l2_queryctrl ctrl;
ctrl.id = v4l2_cid_from_qcap_property(property);
if (xioctl(device->fd, VIDIOC_QUERYCTRL, &ctrl) == -1)
{
WARN("Failed to query control: %s\n", strerror(errno));
return E_PROP_ID_UNSUPPORTED;
}
*min = ctrl.minimum;
*max = ctrl.maximum;
*step = ctrl.step;
*default_value = ctrl.default_value;
*flags = VideoProcAmp_Flags_Manual;
return S_OK;
}
HRESULT qcap_driver_get_prop(Capture *device, VideoProcAmpProperty property,
LONG *value, LONG *flags)
{
struct v4l2_control ctrl;
ctrl.id = v4l2_cid_from_qcap_property(property);
if (xioctl(device->fd, VIDIOC_G_CTRL, &ctrl) == -1)
{
WARN("Failed to get property: %s\n", strerror(errno));
return E_FAIL;
}
*value = ctrl.value;
*flags = VideoProcAmp_Flags_Manual;
return S_OK;
}
HRESULT qcap_driver_set_prop(Capture *device, VideoProcAmpProperty property,
LONG value, LONG flags)
{
struct v4l2_control ctrl;
ctrl.id = v4l2_cid_from_qcap_property(property);
ctrl.value = value;
if (xioctl(device->fd, VIDIOC_S_CTRL, &ctrl) == -1)
{
WARN("Failed to set property: %s\n", strerror(errno));
return E_FAIL;
}
return S_OK;
}
static void reverse_image(const Capture *device, LPBYTE output, const BYTE *input)
{
int inoffset, outoffset, pitch;
UINT width, height, depth;
width = device->current_caps->video_info.bmiHeader.biWidth;
height = device->current_caps->video_info.bmiHeader.biHeight;
depth = device->current_caps->video_info.bmiHeader.biBitCount / 8;
/* the whole image needs to be reversed,
because the dibs are messed up in windows */
outoffset = width * height * depth;
pitch = width * depth;
inoffset = 0;
while (outoffset > 0)
{
int x;
outoffset -= pitch;
for (x = 0; x < pitch; x++)
output[outoffset + x] = input[inoffset + x];
inoffset += pitch;
}
}
static DWORD WINAPI ReadThread(LPVOID lParam)
{
Capture * capBox = lParam;
HRESULT hr;
IMediaSample *pSample = NULL;
ULONG framecount = 0;
unsigned char *pTarget, *image_data;
unsigned int image_size;
UINT width, height, depth;
width = capBox->current_caps->video_info.bmiHeader.biWidth;
height = capBox->current_caps->video_info.bmiHeader.biHeight;
depth = capBox->current_caps->video_info.bmiHeader.biBitCount / 8;
image_size = width * height * depth;
if (!(image_data = heap_alloc(image_size)))
{
ERR("Failed to allocate memory.\n");
return 0;
}
while (capBox->state != State_Stopped)
{
if (capBox->state == State_Paused)
WaitForSingleObject(capBox->run_event, INFINITE);
hr = BaseOutputPinImpl_GetDeliveryBuffer(capBox->pin, &pSample, NULL, NULL, 0);
if (SUCCEEDED(hr))
{
int len;
len = width * height * depth;
IMediaSample_SetActualDataLength(pSample, len);
len = IMediaSample_GetActualDataLength(pSample);
TRACE("Data length: %d KB\n", len / 1024);
IMediaSample_GetPointer(pSample, &pTarget);
while (video_read(capBox->fd, image_data, image_size) == -1)
{
if (errno != EAGAIN)
{
ERR("Failed to read frame: %s\n", strerror(errno));
break;
}
}
reverse_image(capBox, pTarget, image_data);
hr = IMemInputPin_Receive(capBox->pin->pMemInputPin, pSample);
TRACE("%p -> Frame %u: %x\n", capBox, ++framecount, hr);
IMediaSample_Release(pSample);
}
if (FAILED(hr) && hr != VFW_E_NOT_CONNECTED)
{
TRACE("Return %x, stop IFilterGraph\n", hr);
break;
}
}
heap_free(image_data);
return 0;
}
void qcap_driver_init_stream(Capture *device)
{
ALLOCATOR_PROPERTIES req_props, ret_props;
HRESULT hr;
req_props.cBuffers = 3;
req_props.cbBuffer = device->current_caps->video_info.bmiHeader.biWidth * device->current_caps->video_info.bmiHeader.biHeight;
req_props.cbBuffer = (req_props.cbBuffer * device->current_caps->video_info.bmiHeader.biBitCount) / 8;
req_props.cbAlign = 1;
req_props.cbPrefix = 0;
hr = IMemAllocator_SetProperties(device->pin->pAllocator, &req_props, &ret_props);
if (FAILED(hr))
ERR("Failed to set allocator properties (buffer size %u), hr %#x.\n", req_props.cbBuffer, hr);
if (SUCCEEDED(hr))
{
if (FAILED(hr = IMemAllocator_Commit(device->pin->pAllocator)))
ERR("Failed to commit allocator, hr %#x.\n", hr);
}
device->state = State_Paused;
device->thread = CreateThread(NULL, 0, ReadThread, device, 0, NULL);
}
void qcap_driver_start_stream(Capture *device)
{
device->state = State_Running;
SetEvent(device->run_event);
}
void qcap_driver_stop_stream(Capture *device)
{
device->state = State_Paused;
ResetEvent(device->run_event);
}
void qcap_driver_cleanup_stream(Capture *device)
{
HRESULT hr;
device->state = State_Stopped;
WaitForSingleObject(device->thread, INFINITE);
CloseHandle(device->thread);
device->thread = NULL;
hr = IMemAllocator_Decommit(device->pin->pAllocator);
if (hr != S_OK && hr != VFW_E_NOT_COMMITTED)
ERR("Failed to decommit allocator, hr %#x.\n", hr);
}
static void fill_caps(__u32 pixelformat, __u32 width, __u32 height,
__u32 max_fps, __u32 min_fps, struct caps *caps)
{
LONG depth = 24;
memset(caps, 0, sizeof(*caps));
caps->video_info.dwBitRate = width * height * depth * max_fps;
caps->video_info.bmiHeader.biSize = sizeof(caps->video_info.bmiHeader);
caps->video_info.bmiHeader.biWidth = width;
caps->video_info.bmiHeader.biHeight = height;
caps->video_info.bmiHeader.biPlanes = 1;
caps->video_info.bmiHeader.biBitCount = depth;
caps->video_info.bmiHeader.biCompression = BI_RGB;
caps->video_info.bmiHeader.biSizeImage = width * height * depth / 8;
caps->media_type.majortype = MEDIATYPE_Video;
caps->media_type.subtype = MEDIASUBTYPE_RGB24;
caps->media_type.bFixedSizeSamples = TRUE;
caps->media_type.bTemporalCompression = FALSE;
caps->media_type.lSampleSize = width * height * depth / 8;
caps->media_type.formattype = FORMAT_VideoInfo;
caps->media_type.pUnk = NULL;
caps->media_type.cbFormat = sizeof(VIDEOINFOHEADER);
/* We reallocate the caps array, so pbFormat has to be set after all caps
* have been enumerated. */
caps->config.MaxFrameInterval = 10000000 * max_fps;
caps->config.MinFrameInterval = 10000000 * min_fps;
caps->config.MaxOutputSize.cx = width;
caps->config.MaxOutputSize.cy = height;
caps->config.MinOutputSize.cx = width;
caps->config.MinOutputSize.cy = height;
caps->config.guid = FORMAT_VideoInfo;
caps->config.MinBitsPerSecond = width * height * depth * min_fps;
caps->config.MaxBitsPerSecond = width * height * depth * max_fps;
caps->pixelformat = pixelformat;
}
Capture *qcap_driver_init(struct strmbase_source *pin, USHORT card)
{
struct v4l2_frmsizeenum frmsize = {0};
struct v4l2_capability caps = {{0}};
struct v4l2_format format = {0};
Capture *device = NULL;
BOOL have_libv4l2;
char path[20];
int fd, i;
have_libv4l2 = video_init();
if (!(device = heap_alloc_zero(sizeof(*device))))
return NULL;
sprintf(path, "/dev/video%i", card);
TRACE("Opening device %s.\n", path);
#ifdef O_CLOEXEC
if ((fd = video_open(path, O_RDWR | O_NONBLOCK | O_CLOEXEC)) == -1 && errno == EINVAL)
#endif
fd = video_open(path, O_RDWR | O_NONBLOCK);
if (fd == -1)
{
WARN("Failed to open video device: %s\n", strerror(errno));
goto error;
}
fcntl(fd, F_SETFD, FD_CLOEXEC); /* in case O_CLOEXEC isn't supported */
device->fd = fd;
if (xioctl(fd, VIDIOC_QUERYCAP, &caps) == -1)
{
WARN("Failed to query device capabilities: %s\n", strerror(errno));
goto error;
}
#ifdef V4L2_CAP_DEVICE_CAPS
if (caps.capabilities & V4L2_CAP_DEVICE_CAPS)
caps.capabilities = caps.device_caps;
#endif
if (!(caps.capabilities & V4L2_CAP_VIDEO_CAPTURE))
{
WARN("Device does not support single-planar video capture.\n");
goto error;
}
if (!(caps.capabilities & V4L2_CAP_READWRITE))
{
WARN("Device does not support read().\n");
if (!have_libv4l2)
#ifdef SONAME_LIBV4L2
ERR_(winediag)("Reading from %s requires libv4l2, but it could not be loaded.\n", path);
#else
ERR_(winediag)("Reading from %s requires libv4l2, but Wine was compiled without libv4l2 support.\n", path);
#endif
goto error;
}
format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (xioctl(fd, VIDIOC_G_FMT, &format) == -1)
{
ERR("Failed to get device format: %s\n", strerror(errno));
goto error;
}
format.fmt.pix.pixelformat = V4L2_PIX_FMT_BGR24;
if (xioctl(fd, VIDIOC_TRY_FMT, &format) == -1
|| format.fmt.pix.pixelformat != V4L2_PIX_FMT_BGR24)
{
ERR("This device doesn't support V4L2_PIX_FMT_BGR24 format.\n");
goto error;
}
frmsize.pixel_format = V4L2_PIX_FMT_BGR24;
while (xioctl(fd, VIDIOC_ENUM_FRAMESIZES, &frmsize) != -1)
{
struct v4l2_frmivalenum frmival = {0};
__u32 max_fps = 30, min_fps = 30;
struct caps *new_caps;
frmival.pixel_format = format.fmt.pix.pixelformat;
if (frmsize.type == V4L2_FRMSIZE_TYPE_DISCRETE)
{
frmival.width = frmsize.discrete.width;
frmival.height = frmsize.discrete.height;
}
else if (frmsize.type == V4L2_FRMSIZE_TYPE_STEPWISE)
{
frmival.width = frmsize.stepwise.max_width;
frmival.height = frmsize.stepwise.min_height;
}
else
{
FIXME("Unhandled frame size type: %d.\n", frmsize.type);
continue;
}
if (xioctl(fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival) != -1)
{
if (frmival.type == V4L2_FRMIVAL_TYPE_DISCRETE)
{
max_fps = frmival.discrete.denominator / frmival.discrete.numerator;
min_fps = max_fps;
}
else if (frmival.type == V4L2_FRMIVAL_TYPE_STEPWISE
|| frmival.type == V4L2_FRMIVAL_TYPE_CONTINUOUS)
{
max_fps = frmival.stepwise.max.denominator / frmival.stepwise.max.numerator;
min_fps = frmival.stepwise.min.denominator / frmival.stepwise.min.numerator;
}
}
else
ERR("Failed to get fps: %s.\n", strerror(errno));
new_caps = heap_realloc(device->caps, (device->caps_count + 1) * sizeof(*device->caps));
if (!new_caps)
goto error;
device->caps = new_caps;
fill_caps(format.fmt.pix.pixelformat, frmsize.discrete.width, frmsize.discrete.height,
max_fps, min_fps, &device->caps[device->caps_count]);
device->caps_count++;
frmsize.index++;
}
/* We reallocate the caps array, so we have to delay setting pbFormat. */
for (i = 0; i < device->caps_count; ++i)
device->caps[i].media_type.pbFormat = (BYTE *)&device->caps[i].video_info;
if (!set_caps(device, &device->caps[0]))
{
ERR("Failed to set pixel format: %s\n", strerror(errno));
if (!have_libv4l2)
ERR_(winediag)("You may need libv4l2 to use this device.\n");
goto error;
}
device->pin = pin;
device->state = State_Stopped;
device->run_event = CreateEventW(NULL, TRUE, FALSE, NULL);
TRACE("Format: %d bpp - %dx%d.\n", device->current_caps->video_info.bmiHeader.biBitCount,
device->current_caps->video_info.bmiHeader.biWidth,
device->current_caps->video_info.bmiHeader.biHeight);
return device;
error:
qcap_driver_destroy(device);
return NULL;
}
HRESULT qcap_driver_get_caps(Capture *device, LONG index, AM_MEDIA_TYPE **type,
VIDEO_STREAM_CONFIG_CAPS *vscc)
{
if (index >= device->caps_count)
return S_FALSE;
*type = CreateMediaType(&device->caps[index].media_type);
if (!*type)
return E_OUTOFMEMORY;
if (vscc)
memcpy(vscc, &device->caps[index].config, sizeof(VIDEO_STREAM_CONFIG_CAPS));
return S_OK;
}
LONG qcap_driver_get_caps_count(Capture *device)
{
return device->caps_count;
}
#else
Capture *qcap_driver_init(struct strmbase_source *pin, USHORT card)
{
static const char msg[] =
"The v4l headers were not available at compile time,\n"
"so video capture support is not available.\n";
MESSAGE(msg);
return NULL;
}
#define FAIL_WITH_ERR \
ERR("v4l absent: shouldn't be called\n"); \
return E_NOTIMPL
HRESULT qcap_driver_destroy(Capture *capBox)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_check_format(Capture *device, const AM_MEDIA_TYPE *mt)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_set_format(Capture *capBox, AM_MEDIA_TYPE * mT)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_get_format(const Capture *capBox, AM_MEDIA_TYPE ** mT)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_get_prop_range( Capture *capBox,
VideoProcAmpProperty Property, LONG *pMin, LONG *pMax,
LONG *pSteppingDelta, LONG *pDefault, LONG *pCapsFlags )
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_get_prop(Capture *capBox,
VideoProcAmpProperty Property, LONG *lValue, LONG *Flags)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_set_prop(Capture *capBox, VideoProcAmpProperty Property,
LONG lValue, LONG Flags)
{
FAIL_WITH_ERR;
}
void qcap_driver_init_stream(Capture *device)
{
ERR("v4l absent: shouldn't be called\n");
}
void qcap_driver_start_stream(Capture *device)
{
ERR("v4l absent: shouldn't be called\n");
}
void qcap_driver_stop_stream(Capture *device)
{
ERR("v4l absent: shouldn't be called\n");
}
void qcap_driver_cleanup_stream(Capture *device)
{
ERR("v4l absent: shouldn't be called\n");
}
HRESULT qcap_driver_get_caps(Capture *device, LONG index, AM_MEDIA_TYPE **type,
VIDEO_STREAM_CONFIG_CAPS *vscc)
{
FAIL_WITH_ERR;
}
LONG qcap_driver_get_caps_count(Capture *device)
{
ERR("v4l absent: shouldn't be called\n");
return 0;
}
#endif /* defined(VIDIOCMCAPTURE) */
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