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Sweden-Number/dlls/qcap/v4l.c

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/*
* DirectShow capture services (QCAP.DLL)
*
* Copyright 2005 Maarten Lankhorst
*
* This file contains the part of the vfw capture interface that
* does the actual Video4Linux(1/2) stuff required for capturing
* and setting/getting media format..
*
* 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
*/
#include "config.h"
#include "wine/port.h"
#define NONAMELESSSTRUCT
#define NONAMELESSUNION
#define COBJMACROS
#include <stdarg.h>
#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 "capture.h"
#include "qcap_main.h"
#include "pin.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
#ifdef HAVE_SYS_ERRNO_H
#include <sys/errno.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_ASM_TYPES_H
#include <asm/types.h>
#endif
#ifdef HAVE_LINUX_VIDEODEV_H
#include <linux/videodev.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
WINE_DEFAULT_DEBUG_CHANNEL(qcap_v4l);
#ifdef HAVE_LINUX_VIDEODEV_H
typedef void (* Renderer)(Capture *, LPBYTE bufferin, LPBYTE stream);
struct _Capture
{
UINT width, height, bitDepth, fps, outputwidth, outputheight;
BOOL swresize;
CRITICAL_SECTION CritSect;
IPin *pOut;
int fd, mmap;
int iscommitted, stopped;
struct video_picture pict;
int dbrightness, dhue, dcolour, dcontrast;
/* mmap (V4l1) */
struct video_mmap *grab_buf;
struct video_mbuf gb_buffers;
unsigned char *pmap;
int buffers;
/* read (V4l1) */
int imagesize;
char * grab_data;
int curframe;
HANDLE thread;
Renderer renderer;
};
struct renderlist
{
int depth;
const char* name;
Renderer renderer;
};
static void renderer_RGB(Capture *capBox, LPBYTE bufferin, LPBYTE stream);
static void renderer_YUV(Capture *capBox, LPBYTE bufferin, LPBYTE stream);
static const struct renderlist renderlist_V4l[] = {
{ 0, "NULL renderer", NULL },
{ 8, "Gray scales", NULL }, /* 1, Don't support */
{ 0, "High 240 cube (BT848)", NULL }, /* 2, Don't support */
{ 16, "16 bit RGB (565)", NULL }, /* 3, Don't support */
{ 24, "24 bit RGB values", renderer_RGB }, /* 4, Supported, */
{ 32, "32 bit RGB values", renderer_RGB }, /* 5, Supported */
{ 16, "15 bit RGB (555)", NULL }, /* 6, Don't support */
{ 16, "YUV 422 (Not P)", renderer_YUV }, /* 7, Supported */
{ 16, "YUYV (Not P)", renderer_YUV }, /* 8, Supported */
{ 16, "UYVY (Not P)", renderer_YUV }, /* 9, Supported */
{ 16, "YUV 420 (Not P)", NULL }, /* 10, Not supported, if I had to guess it's YYUYYV */
{ 12, "YUV 411 (Not P)", renderer_YUV }, /* 11, Supported */
{ 0, "Raw capturing (BT848)", NULL }, /* 12, Don't support */
{ 16, "YUV 422 (Planar)", renderer_YUV }, /* 13, Supported */
{ 12, "YUV 411 (Planar)", renderer_YUV }, /* 14, Supported */
{ 12, "YUV 420 (Planar)", renderer_YUV }, /* 15, Supported */
{ 10, "YUV 410 (Planar)", renderer_YUV }, /* 16, Supported */
/* FIXME: add YUV420 support */
{ 0, NULL, NULL },
};
const int fallback_V4l[] = { 4, 5, 7, 8, 9, 13, 15, 14, 16, 11, -1 };
/* Fallback: First try raw formats (Should try yuv first perhaps?), then yuv */
/* static const Capture defbox; */
static int xioctl(int fd, int request, void * arg)
{
int r;
do {
r = ioctl (fd, request, arg);
} while (-1 == r && EINTR == errno);
return r;
}
/* Prepare the capture buffers */
static HRESULT V4l_Prepare(Capture *capBox)
{
TRACE("%p: Preparing for %dx%d resolution\n", capBox, capBox->width, capBox->height);
/* Try mmap */
capBox->mmap = 0;
if (xioctl(capBox->fd, VIDIOCGMBUF, &capBox->gb_buffers) != -1 &&
capBox->gb_buffers.frames)
{
capBox->buffers = capBox->gb_buffers.frames;
if (capBox->gb_buffers.frames > 1)
capBox->buffers = 1;
TRACE("%p: Using %d/%d buffers\n", capBox,
capBox->buffers, capBox->gb_buffers.frames);
capBox->pmap = mmap( 0, capBox->gb_buffers.size, PROT_READ|PROT_WRITE,
MAP_SHARED, capBox->fd, 0 );
if (capBox->pmap != MAP_FAILED)
{
int i;
capBox->grab_buf = CoTaskMemAlloc(sizeof(struct video_mmap) * capBox->buffers);
if (!capBox->grab_buf)
{
munmap(capBox->pmap, capBox->gb_buffers.size);
return E_OUTOFMEMORY;
}
/* Setup mmap capture buffers. */
for (i = 0; i < capBox->buffers; i++)
{
capBox->grab_buf[i].format = capBox->pict.palette;
capBox->grab_buf[i].frame = i;
capBox->grab_buf[i].width = capBox->width;
capBox->grab_buf[i].height = capBox->height;
}
capBox->mmap = 1;
}
}
if (!capBox->mmap)
{
capBox->buffers = 1;
capBox->imagesize = renderlist_V4l[capBox->pict.palette].depth *
capBox->height * capBox->width / 8;
capBox->grab_data = CoTaskMemAlloc(capBox->imagesize);
if (!capBox->grab_data)
return E_OUTOFMEMORY;
}
TRACE("Using mmap: %d\n", capBox->mmap);
return S_OK;
}
static void V4l_Unprepare(Capture *capBox)
{
if (capBox->mmap)
{
for (capBox->curframe = 0; capBox->curframe < capBox->buffers; capBox->curframe++)
xioctl(capBox->fd, VIDIOCSYNC, &capBox->grab_buf[capBox->curframe]);
munmap(capBox->pmap, capBox->gb_buffers.size);
CoTaskMemFree(capBox->grab_buf);
}
else
CoTaskMemFree(capBox->grab_data);
}
HRESULT qcap_driver_destroy(Capture *capBox)
{
TRACE("%p\n", capBox);
if( capBox->fd != -1 )
close(capBox->fd);
DeleteCriticalSection(&capBox->CritSect);
CoTaskMemFree(capBox);
return S_OK;
}
HRESULT qcap_driver_set_format(Capture *capBox, AM_MEDIA_TYPE * mT)
{
int newheight, newwidth;
struct video_window window;
VIDEOINFOHEADER *format;
TRACE("%p\n", capBox);
format = (VIDEOINFOHEADER *) mT->pbFormat;
if (format->bmiHeader.biBitCount != 24 ||
format->bmiHeader.biCompression != BI_RGB)
{
FIXME("unsupported media type %d %d\n", format->bmiHeader.biBitCount,
format->bmiHeader.biCompression );
return VFW_E_INVALIDMEDIATYPE;
}
newwidth = format->bmiHeader.biWidth;
newheight = format->bmiHeader.biHeight;
TRACE("%p -> (%p) - %d %d\n", capBox, mT, newwidth, newheight);
if (capBox->height == newheight && capBox->width == newwidth)
return S_OK;
if(-1 == xioctl(capBox->fd, VIDIOCGWIN, &window))
{
ERR("ioctl(VIDIOCGWIN) failed (%d)\n", errno);
return E_FAIL;
}
window.width = newwidth;
window.height = newheight;
if (xioctl(capBox->fd, VIDIOCSWIN, &window) == -1)
{
TRACE("using software resize: %dx%d -> %dx%d\n",
window.width, window.height, capBox->width, capBox->height);
capBox->swresize = TRUE;
}
else
{
capBox->height = window.height;
capBox->width = window.width;
capBox->swresize = FALSE;
}
capBox->outputwidth = window.width;
capBox->outputheight = window.height;
return S_OK;
}
HRESULT qcap_driver_get_format(Capture *capBox, AM_MEDIA_TYPE ** mT)
{
VIDEOINFOHEADER *vi;
mT[0] = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
if (!mT[0])
return E_OUTOFMEMORY;
vi = CoTaskMemAlloc(sizeof(VIDEOINFOHEADER));
mT[0]->cbFormat = sizeof(VIDEOINFOHEADER);
if (!vi)
{
CoTaskMemFree(mT[0]);
return E_OUTOFMEMORY;
}
memcpy(&mT[0]->majortype, &MEDIATYPE_Video, sizeof(GUID));
memcpy(&mT[0]->subtype, &MEDIASUBTYPE_RGB24, sizeof(GUID));
memcpy(&mT[0]->formattype, &FORMAT_VideoInfo, sizeof(GUID));
mT[0]->bFixedSizeSamples = TRUE;
mT[0]->bTemporalCompression = FALSE;
mT[0]->pUnk = NULL;
mT[0]->lSampleSize = capBox->outputwidth * capBox->outputheight * capBox->bitDepth / 8;
TRACE("Output format: %dx%d - %d bits = %u KB\n", capBox->outputwidth,
capBox->outputheight, capBox->bitDepth, mT[0]->lSampleSize/1024);
vi->rcSource.left = 0; vi->rcSource.top = 0;
vi->rcTarget.left = 0; vi->rcTarget.top = 0;
vi->rcSource.right = capBox->width; vi->rcSource.bottom = capBox->height;
vi->rcTarget.right = capBox->outputwidth; vi->rcTarget.bottom = capBox->outputheight;
vi->dwBitRate = capBox->fps * mT[0]->lSampleSize;
vi->dwBitErrorRate = 0;
vi->AvgTimePerFrame = (LONGLONG)10000000.0 / (LONGLONG)capBox->fps;
vi->bmiHeader.biSize = 40;
vi->bmiHeader.biWidth = capBox->outputwidth;
vi->bmiHeader.biHeight = capBox->outputheight;
vi->bmiHeader.biPlanes = 1;
vi->bmiHeader.biBitCount = 24;
vi->bmiHeader.biCompression = BI_RGB;
vi->bmiHeader.biSizeImage = mT[0]->lSampleSize;
vi->bmiHeader.biClrUsed = vi->bmiHeader.biClrImportant = 0;
vi->bmiHeader.biXPelsPerMeter = 100;
vi->bmiHeader.biYPelsPerMeter = 100;
mT[0]->pbFormat = (void *)vi;
dump_AM_MEDIA_TYPE(mT[0]);
return S_OK;
}
HRESULT qcap_driver_get_prop_range( Capture *capBox, long Property, long *pMin,
long *pMax, long *pSteppingDelta, long *pDefault, long *pCapsFlags )
{
TRACE("%p -> %ld %p %p %p %p %p\n", capBox, Property,
pMin, pMax, pSteppingDelta, pDefault, pCapsFlags);
switch (Property)
{
case VideoProcAmp_Brightness:
*pDefault = capBox->dbrightness;
break;
case VideoProcAmp_Contrast:
*pDefault = capBox->dcontrast;
break;
case VideoProcAmp_Hue:
*pDefault = capBox->dhue;
break;
case VideoProcAmp_Saturation:
*pDefault = capBox->dcolour;
break;
default:
FIXME("Not implemented %ld\n", Property);
return E_NOTIMPL;
}
*pMin = 0;
*pMax = 65535;
*pSteppingDelta = 65536/256;
*pCapsFlags = VideoProcAmp_Flags_Manual;
return S_OK;
}
HRESULT qcap_driver_get_prop( Capture *capBox, long Property, long *lValue, long *Flags )
{
TRACE("%p -> %ld %p %p\n", capBox, Property, lValue, Flags);
switch (Property)
{
case VideoProcAmp_Brightness:
*lValue = capBox->pict.brightness;
break;
case VideoProcAmp_Contrast:
*lValue = capBox->pict.contrast;
break;
case VideoProcAmp_Hue:
*lValue = capBox->pict.hue;
break;
case VideoProcAmp_Saturation:
*lValue = capBox->pict.colour;
break;
default:
FIXME("Not implemented %ld\n", Property);
return E_NOTIMPL;
}
*Flags = VideoProcAmp_Flags_Manual;
return S_OK;
}
HRESULT qcap_driver_set_prop(Capture *capBox, long Property, long lValue, long Flags)
{
TRACE("%p -> %ld %ld %ld\n", capBox, Property, lValue, Flags);
switch (Property)
{
case VideoProcAmp_Brightness:
capBox->pict.brightness = lValue;
break;
case VideoProcAmp_Contrast:
capBox->pict.contrast = lValue;
break;
case VideoProcAmp_Hue:
capBox->pict.hue = lValue;
break;
case VideoProcAmp_Saturation:
capBox->pict.colour = lValue;
break;
default:
FIXME("Not implemented %ld\n", Property);
return E_NOTIMPL;
}
if (xioctl(capBox->fd, VIDIOCSPICT, &capBox->pict) == -1)
{
ERR("ioctl(VIDIOCSPICT) failed (%d)\n",errno);
return E_FAIL;
}
return S_OK;
}
static void renderer_RGB(Capture *capBox, LPBYTE bufferin, LPBYTE stream)
{
int depth = renderlist_V4l[capBox->pict.palette].depth;
int size = capBox->height * capBox->width * depth / 8;
int pointer, offset;
switch (depth)
{
case 24:
memcpy(bufferin, stream, size);
break;
case 32:
pointer = 0;
offset = 1;
while (pointer + offset <= size)
{
bufferin[pointer] = stream[pointer + offset];
pointer++;
bufferin[pointer] = stream[pointer + offset];
pointer++;
bufferin[pointer] = stream[pointer + offset];
pointer++;
offset++;
}
break;
default:
ERR("Unknown bit depth %d\n", depth);
return;
}
}
static void renderer_YUV(Capture *capBox, LPBYTE bufferin, LPBYTE stream)
{
enum YUV_Format format;
switch (capBox->pict.palette)
{
case 7: /* YUV422 - same as YUYV */
case 8: /* YUYV */
format = YUYV;
break;
case 9: /* UYVY */
format = UYVY;
break;
case 11: /* YUV411 */
format = UYYVYY;
break;
case 13: /* YUV422P */
format = YUVP_421;
break;
case 14: /* YUV411P */
format = YUVP_441;
break;
case 15: /* YUV420P */
format = YUVP_422;
break;
case 16: /* YUV410P */
format = YUVP_444;
break;
default:
ERR("Unknown palette %d\n", capBox->pict.palette);
return;
}
YUV_To_RGB24(format, bufferin, stream, capBox->width, capBox->height);
}
static void Resize(Capture * capBox, LPBYTE output, LPBYTE input)
{
/* the whole image needs to be reversed,
because the dibs are messed up in windows */
if (!capBox->swresize)
{
int depth = capBox->bitDepth / 8;
int inoffset = 0, outoffset = capBox->height * capBox->width * depth;
int ow = capBox->width * depth;
while (outoffset > 0)
{
int x;
outoffset -= ow;
for (x = 0; x < ow; x++)
output[outoffset + x] = input[inoffset + x];
inoffset += ow;
}
}
else
{
HDC dc_s, dc_d;
HBITMAP bmp_s, bmp_d;
int depth = capBox->bitDepth / 8;
int inoffset = 0, outoffset = (capBox->outputheight) * capBox->outputwidth * depth;
int ow = capBox->outputwidth * depth;
LPBYTE myarray;
/* FIXME: Improve software resizing: add error checks and optimize */
myarray = CoTaskMemAlloc(capBox->outputwidth * capBox->outputheight * depth);
dc_s = CreateCompatibleDC(NULL);
dc_d = CreateCompatibleDC(NULL);
bmp_s = CreateBitmap(capBox->width, capBox->height, 1, capBox->bitDepth, input);
bmp_d = CreateBitmap(capBox->outputwidth, capBox->outputheight, 1, capBox->bitDepth, NULL);
SelectObject(dc_s, bmp_s);
SelectObject(dc_d, bmp_d);
StretchBlt(dc_d, 0, 0, capBox->outputwidth, capBox->outputheight,
dc_s, 0, 0, capBox->width, capBox->height, SRCCOPY);
GetBitmapBits(bmp_d, capBox->outputwidth * capBox->outputheight * depth, myarray);
while (outoffset > 0)
{
int i;
outoffset -= ow;
for (i = 0; i < ow; i++)
output[outoffset + i] = myarray[inoffset + i];
inoffset += ow;
}
CoTaskMemFree(myarray);
DeleteObject(dc_s);
DeleteObject(dc_d);
DeleteObject(bmp_s);
DeleteObject(bmp_d);
}
}
static void V4l_GetFrame(Capture * capBox, unsigned char ** pInput)
{
if (capBox->pmap)
{
if (xioctl(capBox->fd, VIDIOCSYNC, &capBox->grab_buf[capBox->curframe]) == -1)
WARN("Syncing ioctl failed: %d\n", errno);
*pInput = capBox->pmap + capBox->gb_buffers.offsets[capBox->curframe];
}
else
{
int retval;
while ((retval = read(capBox->fd, capBox->grab_data, capBox->imagesize)) == -1)
if (errno != EAGAIN) break;
if (retval == -1)
WARN("Error occurred while reading from device: %s\n", strerror(errno));
*pInput = (unsigned char*) capBox->grab_data;
}
}
static void V4l_FreeFrame(Capture * capBox)
{
TRACE("\n");
if (capBox->mmap)
{
if (xioctl(capBox->fd, VIDIOCMCAPTURE, &capBox->grab_buf[capBox->curframe]) == -1)
ERR("Freeing frame for capture failed: %s\n", strerror(errno));
}
if (++capBox->curframe == capBox->buffers)
capBox->curframe = 0;
}
static DWORD WINAPI ReadThread(LPVOID lParam)
{
Capture * capBox = (Capture *)lParam;
HRESULT hr;
IMediaSample *pSample = NULL;
unsigned long framecount = 0;
unsigned char *pTarget, *pInput, *pOutput;
hr = V4l_Prepare(capBox);
if (FAILED(hr))
goto fail;
pOutput = CoTaskMemAlloc(capBox->width * capBox->height * capBox->bitDepth / 8);
capBox->curframe = 0;
do {
V4l_FreeFrame(capBox);
} while (capBox->curframe != 0);
while (1)
{
EnterCriticalSection(&capBox->CritSect);
if (capBox->stopped)
break;
hr = OutputPin_GetDeliveryBuffer((OutputPin *)capBox->pOut, &pSample, NULL, NULL, 0);
if (SUCCEEDED(hr))
{
int len;
if (!capBox->swresize)
len = capBox->height * capBox->width * capBox->bitDepth / 8;
else
len = capBox->outputheight * capBox->outputwidth * capBox->bitDepth / 8;
IMediaSample_SetActualDataLength(pSample, len);
len = IMediaSample_GetActualDataLength(pSample);
TRACE("Data length: %d KB\n", len / 1024);
IMediaSample_GetPointer(pSample, &pTarget);
/* FIXME: Check return values.. */
V4l_GetFrame(capBox, &pInput);
capBox->renderer(capBox, pOutput, pInput);
Resize(capBox, pTarget, pOutput);
hr = OutputPin_SendSample((OutputPin *)capBox->pOut, pSample);
TRACE("%p -> Frame %lu: %x\n", capBox, ++framecount, hr);
IMediaSample_Release(pSample);
V4l_FreeFrame(capBox);
}
LeaveCriticalSection(&capBox->CritSect);
if (FAILED(hr) && hr != VFW_E_NOT_CONNECTED)
{
ERR("Received error: %x\n", hr);
goto cfail;
}
}
LeaveCriticalSection(&capBox->CritSect);
CoTaskMemFree(pOutput);
return 0;
cfail:
CoTaskMemFree(pOutput);
V4l_Unprepare(capBox);
LeaveCriticalSection(&capBox->CritSect);
fail:
capBox->thread = 0; capBox->stopped = 1;
FIXME("Stop IFilterGraph\n");
return 0;
}
HRESULT qcap_driver_run(Capture *capBox, FILTER_STATE *state)
{
HANDLE thread;
HRESULT hr;
TRACE("%p -> (%p)\n", capBox, state);
if (*state == State_Running) return S_OK;
EnterCriticalSection(&capBox->CritSect);
capBox->stopped = 0;
if (*state == State_Stopped)
{
*state = State_Running;
if (!capBox->iscommitted++)
{
IMemAllocator * pAlloc = NULL;
ALLOCATOR_PROPERTIES ap, actual;
OutputPin *out;
ap.cBuffers = 3;
if (!capBox->swresize)
ap.cbBuffer = capBox->width * capBox->height;
else
ap.cbBuffer = capBox->outputwidth * capBox->outputheight;
ap.cbBuffer = (ap.cbBuffer * capBox->bitDepth) / 8;
ap.cbAlign = 1;
ap.cbPrefix = 0;
out = (OutputPin *)capBox->pOut;
hr = IMemInputPin_GetAllocator(out->pMemInputPin, &pAlloc);
if (SUCCEEDED(hr))
hr = IMemAllocator_SetProperties(pAlloc, &ap, &actual);
if (SUCCEEDED(hr))
hr = IMemAllocator_Commit(pAlloc);
if (pAlloc)
IMemAllocator_Release(pAlloc);
TRACE("Committing allocator: %x\n", hr);
}
thread = CreateThread(NULL, 0, ReadThread, capBox, 0, NULL);
if (thread)
{
capBox->thread = thread;
SetThreadPriority(thread, THREAD_PRIORITY_LOWEST);
LeaveCriticalSection(&capBox->CritSect);
return S_OK;
}
ERR("Creating thread failed.. %x\n", GetLastError());
LeaveCriticalSection(&capBox->CritSect);
return E_FAIL;
}
ResumeThread(capBox->thread);
*state = State_Running;
LeaveCriticalSection(&capBox->CritSect);
return S_OK;
}
HRESULT qcap_driver_pause(Capture *capBox, FILTER_STATE *state)
{
TRACE("%p -> (%p)\n", capBox, state);
if (*state == State_Paused)
return S_OK;
if (*state == State_Stopped)
qcap_driver_run(capBox, state);
EnterCriticalSection(&capBox->CritSect);
*state = State_Paused;
SuspendThread(capBox->thread);
LeaveCriticalSection(&capBox->CritSect);
return S_OK;
}
HRESULT qcap_driver_stop(Capture *capBox, FILTER_STATE *state)
{
TRACE("%p -> (%p)\n", capBox, state);
if (*state == State_Stopped)
return S_OK;
EnterCriticalSection(&capBox->CritSect);
if (capBox->thread)
{
if (*state == State_Paused)
ResumeThread(capBox->thread);
capBox->stopped = 1;
capBox->thread = 0;
if (capBox->iscommitted)
{
IMemInputPin *pMem = NULL;
IMemAllocator * pAlloc = NULL;
IPin *pConnect = NULL;
HRESULT hr;
capBox->iscommitted = 0;
hr = IPin_ConnectedTo(capBox->pOut, &pConnect);
if (SUCCEEDED(hr))
hr = IPin_QueryInterface(pConnect, &IID_IMemInputPin, (void **) &pMem);
if (SUCCEEDED(hr))
hr = IMemInputPin_GetAllocator(pMem, &pAlloc);
if (SUCCEEDED(hr))
hr = IMemAllocator_Decommit(pAlloc);
if (pAlloc)
IMemAllocator_Release(pAlloc);
if (pMem)
IMemInputPin_Release(pMem);
if (pConnect)
IPin_Release(pConnect);
if (hr != S_OK && hr != VFW_E_NOT_COMMITTED)
WARN("Decommitting allocator: %x\n", hr);
}
V4l_Unprepare(capBox);
}
*state = State_Stopped;
LeaveCriticalSection(&capBox->CritSect);
return S_OK;
}
Capture * qcap_driver_init( IPin *pOut, USHORT card )
{
Capture * capBox = NULL;
char device[20];
struct video_capability capa;
struct video_picture pict;
struct video_window window;
YUV_Init();
capBox = CoTaskMemAlloc(sizeof(Capture));
if (!capBox)
goto error;
/* capBox->vtbl = &defboxVtbl; */
InitializeCriticalSection( &capBox->CritSect );
sprintf(device, "/dev/video%i", card);
TRACE("opening %s\n", device);
capBox->fd = open(device, O_RDWR | O_NONBLOCK);
if (capBox->fd == -1)
{
WARN("open failed (%d)\n", errno);
goto error;
}
memset(&capa, 0, sizeof(capa));
if (xioctl(capBox->fd, VIDIOCGCAP, &capa) == -1)
{
WARN("ioctl(VIDIOCGCAP) failed (%d)\n", errno);
goto error;
}
if (!(capa.type & VID_TYPE_CAPTURE))
{
WARN("not a video capture device\n");
goto error;
}
TRACE("%d inputs on %s\n", capa.channels, capa.name );
if (xioctl(capBox->fd, VIDIOCGPICT, &pict) == -1)
{
ERR("ioctl(VIDIOCGPICT) failed (%d)\n", errno );
goto error;
}
TRACE("depth %d palette %d (%s) hue %d color %d contrast %d\n",
pict.depth, pict.palette, renderlist_V4l[pict.palette].name,
pict.hue, pict.colour, pict.contrast );
capBox->dbrightness = pict.brightness;
capBox->dcolour = pict.colour;
capBox->dhue = pict.hue;
capBox->dcontrast = pict.contrast;
if (!renderlist_V4l[pict.palette].renderer)
{
int palet = pict.palette, i;
TRACE("No renderer available for %s, falling back to defaults\n",
renderlist_V4l[pict.palette].name);
capBox->renderer = NULL;
for (i = 0; fallback_V4l[i] >=0 ; i++)
{
int n = fallback_V4l[i];
if (renderlist_V4l[n].renderer == NULL)
continue;
pict.depth = renderlist_V4l[n].depth;
pict.palette = n;
if (xioctl(capBox->fd, VIDIOCSPICT, &pict) == -1)
{
TRACE("Could not render with %s (%d)\n",
renderlist_V4l[n].name, n);
continue;
}
TRACE("using renderer %s (%d)\n",
renderlist_V4l[n].name, n);
capBox->renderer = renderlist_V4l[n].renderer;
break;
}
if (!capBox->renderer)
{
ERR("video format %s isn't available\n",
renderlist_V4l[palet].name);
goto error;
}
}
else
{
TRACE("Using the suggested format\n");
capBox->renderer = renderlist_V4l[pict.palette].renderer;
}
memcpy(&capBox->pict, &pict, sizeof(struct video_picture));
memset(&window, 0, sizeof(window));
if (xioctl(capBox->fd, VIDIOCGWIN, &window) == -1)
{
WARN("VIDIOCGWIN failed (%d)\n", errno);
goto error;
}
capBox->height = capBox->outputheight = window.height;
capBox->width = capBox->outputwidth = window.width;
capBox->swresize = FALSE;
capBox->bitDepth = 24;
capBox->pOut = pOut;
capBox->fps = 3;
capBox->stopped = 0;
capBox->curframe = 0;
capBox->iscommitted = 0;
TRACE("format: %d bits - %d x %d\n", capBox->bitDepth, capBox->width, capBox->height);
return (Capture*) capBox;
error:
if (capBox)
qcap_driver_destroy( (Capture*) capBox );
return NULL;
}
#else
Capture * qcap_driver_init( IPin *pOut, USHORT card )
{
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_set_format(Capture *capBox, AM_MEDIA_TYPE * mT)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_get_format(Capture *capBox, AM_MEDIA_TYPE ** mT)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_get_prop_range( Capture *capBox, long Property, long *pMin,
long *pMax, long *pSteppingDelta, long *pDefault, long *pCapsFlags )
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_get_prop(Capture *capBox, long Property, long *lValue, long *Flags)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_set_prop(Capture *capBox, long Property, long lValue, long Flags)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_run(Capture *capBox, FILTER_STATE *state)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_pause(Capture *capBox, FILTER_STATE *state)
{
FAIL_WITH_ERR;
}
HRESULT qcap_driver_stop(Capture *capBox, FILTER_STATE *state)
{
FAIL_WITH_ERR;
}
#endif /* HAVE_LINUX_VIDEODEV_H */
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