dlls/qcap/v4l.c

   1 /*
   2  * DirectShow capture services (QCAP.DLL)
   3  *
   4  * Copyright 2005 Maarten Lankhorst
   5  *
   6  * This file contains the part of the vfw capture interface that
   7  * does the actual Video4Linux(1/2) stuff required for capturing
   8  * and setting/getting media format..
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #define COBJMACROS
  29
  30 #include <stdarg.h>
  31 #include <stdio.h>
  32 #include <fcntl.h>
  33 #ifdef HAVE_SYS_IOCTL_H
  34 #include <sys/ioctl.h>
  35 #endif
  36 #ifdef HAVE_SYS_MMAN_H
  37 #include <sys/mman.h>
  38 #endif
  39 #include <errno.h>
  40 #ifdef HAVE_SYS_TIME_H
  41 #include <sys/time.h>
  42 #endif
  43 #ifdef HAVE_ASM_TYPES_H
  44 #include <asm/types.h>
  45 #endif
  46 #ifdef HAVE_LIBV4L1_H
  47 #include <libv4l1.h>
  48 #endif
  49 #ifdef HAVE_LINUX_VIDEODEV_H
  50 #include <linux/videodev.h>
  51 #endif
  52 #ifdef HAVE_UNISTD_H
  53 #include <unistd.h>
  54 #endif
  55
  56 #include "windef.h"
  57 #include "winbase.h"
  58 #include "wtypes.h"
  59 #include "wingdi.h"
  60 #include "winuser.h"
  61 #include "dshow.h"
  62 #include "vfwmsgs.h"
  63 #include "amvideo.h"
  64 #include "wine/debug.h"
  65 #include "wine/library.h"
  66
  67 #include "capture.h"
  68 #include "qcap_main.h"
  69
  70 WINE_DEFAULT_DEBUG_CHANNEL(qcap_v4l);
  71
  72 #ifdef VIDIOCMCAPTURE
  73
  74 static typeof(open) *video_open = open;
  75 static typeof(close) *video_close = close;
  76 static typeof(ioctl) *video_ioctl = ioctl;
  77 static typeof(read) *video_read = read;
  78 static typeof(mmap) *video_mmap = mmap;
  79 static typeof(munmap) *video_munmap = munmap;
  80
  81 static void video_init(void)
  82 {
  83 #ifdef SONAME_LIBV4L1
  84     static void *video_lib;
  85
  86     if (video_lib)
  87         return;
  88     video_lib = wine_dlopen(SONAME_LIBV4L1, RTLD_NOW, NULL, 0);
  89     if (!video_lib)
  90         return;
  91     video_open = wine_dlsym(video_lib, "v4l1_open", NULL, 0);
  92     video_close = wine_dlsym(video_lib, "v4l1_close", NULL, 0);
  93     video_ioctl = wine_dlsym(video_lib, "v4l1_ioctl", NULL, 0);
  94     video_read = wine_dlsym(video_lib, "v4l1_read", NULL, 0);
  95     video_mmap = wine_dlsym(video_lib, "v4l1_mmap", NULL, 0);
  96     video_munmap = wine_dlsym(video_lib, "v4l1_munmap", NULL, 0);
  97 #endif
  98 }
  99
 100 typedef void (* Renderer)(const Capture *, LPBYTE bufferin, const BYTE *stream);
 101
 102 struct _Capture
 103 {
 104     UINT width, height, bitDepth, fps, outputwidth, outputheight;
 105     BOOL swresize;
 106
 107     CRITICAL_SECTION CritSect;
 108
 109     IPin *pOut;
 110     int fd, mmap;
 111     BOOL iscommitted, stopped;
 112     struct video_picture pict;
 113     int dbrightness, dhue, dcolour, dcontrast;
 114
 115     /* mmap (V4l1) */
 116     struct video_mmap *grab_buf;
 117     struct video_mbuf gb_buffers;
 118     unsigned char *pmap;
 119     int buffers;
 120
 121     /* read (V4l1) */
 122     int imagesize;
 123     char * grab_data;
 124
 125     int curframe;
 126
 127     HANDLE thread;
 128     Renderer renderer;
 129 };
 130
 131 struct renderlist
 132 {
 133     int depth;
 134     const char* name;
 135     Renderer renderer;
 136 };
 137
 138 static void renderer_RGB(const Capture *capBox, LPBYTE bufferin, const BYTE *stream);
 139 static void renderer_YUV(const Capture *capBox, LPBYTE bufferin, const BYTE *stream);
 140
 141 static const struct renderlist renderlist_V4l[] = {
 142     {  0, "NULL renderer",               NULL },
 143     {  8, "Gray scales",                 NULL }, /* 1,  Don't support  */
 144     {  0, "High 240 cube (BT848)",       NULL }, /* 2,  Don't support  */
 145     { 16, "16 bit RGB (565)",            NULL }, /* 3,  Don't support  */
 146     { 24, "24 bit RGB values",   renderer_RGB }, /* 4,  Supported,     */
 147     { 32, "32 bit RGB values",   renderer_RGB }, /* 5,  Supported      */
 148     { 16, "15 bit RGB (555)",            NULL }, /* 6,  Don't support  */
 149     { 16, "YUV 422 (Not P)",     renderer_YUV }, /* 7,  Supported */
 150     { 16, "YUYV (Not P)",        renderer_YUV }, /* 8,  Supported */
 151     { 16, "UYVY (Not P)",        renderer_YUV }, /* 9,  Supported */
 152     { 16, "YUV 420 (Not P)", NULL }, /* 10, Not supported, if I had to guess it's YYUYYV */
 153     { 12, "YUV 411 (Not P)",     renderer_YUV }, /* 11, Supported */
 154     {  0, "Raw capturing (BT848)",       NULL }, /* 12, Don't support  */
 155     { 16, "YUV 422 (Planar)",    renderer_YUV }, /* 13, Supported */
 156     { 12, "YUV 411 (Planar)",    renderer_YUV }, /* 14, Supported */
 157     { 12, "YUV 420 (Planar)",    renderer_YUV }, /* 15, Supported */
 158     { 10, "YUV 410 (Planar)",    renderer_YUV }, /* 16, Supported */
 159     /* FIXME: add YUV420 support */
 160     {  0, NULL,                          NULL },
 161 };
 162
 163 static const int fallback_V4l[] = { 4, 5, 7, 8, 9, 13, 15, 14, 16, 11, -1 };
 164 /* Fallback: First try raw formats (Should try yuv first perhaps?), then yuv */
 165
 166 /* static const Capture defbox; */
 167
 168 static int xioctl(int fd, int request, void * arg)
 169 {
 170     int r;
 171
 172     do {
 173         r = video_ioctl (fd, request, arg);
 174     } while (-1 == r && EINTR == errno);
 175
 176     return r;
 177 }
 178
 179 /* Prepare the capture buffers */
 180 static HRESULT V4l_Prepare(Capture *capBox)
 181 {
 182     TRACE("%p: Preparing for %dx%d resolution\n", capBox, capBox->width, capBox->height);
 183
 184     /* Try mmap */
 185     capBox->mmap = 0;
 186     if (xioctl(capBox->fd, VIDIOCGMBUF, &capBox->gb_buffers) != -1 &&
 187         capBox->gb_buffers.frames)
 188     {
 189         capBox->buffers = capBox->gb_buffers.frames;
 190         if (capBox->gb_buffers.frames > 1)
 191             capBox->buffers = 1;
 192         TRACE("%p: Using %d/%d buffers\n", capBox,
 193               capBox->buffers, capBox->gb_buffers.frames);
 194
 195         capBox->pmap = video_mmap( 0, capBox->gb_buffers.size, PROT_READ|PROT_WRITE,
 196                                    MAP_SHARED, capBox->fd, 0 );
 197         if (capBox->pmap != MAP_FAILED)
 198         {
 199             int i;
 200
 201             capBox->grab_buf = CoTaskMemAlloc(sizeof(struct video_mmap) * capBox->buffers);
 202             if (!capBox->grab_buf)
 203             {
 204                 video_munmap(capBox->pmap, capBox->gb_buffers.size);
 205                 return E_OUTOFMEMORY;
 206             }
 207
 208             /* Setup mmap capture buffers. */
 209             for (i = 0; i < capBox->buffers; i++)
 210             {
 211                 capBox->grab_buf[i].format = capBox->pict.palette;
 212                 capBox->grab_buf[i].frame = i;
 213                 capBox->grab_buf[i].width = capBox->width;
 214                 capBox->grab_buf[i].height = capBox->height;
 215             }
 216             capBox->mmap = 1;
 217         }
 218     }
 219     if (!capBox->mmap)
 220     {
 221         capBox->buffers = 1;
 222         capBox->imagesize = renderlist_V4l[capBox->pict.palette].depth *
 223                                 capBox->height * capBox->width / 8;
 224         capBox->grab_data = CoTaskMemAlloc(capBox->imagesize);
 225         if (!capBox->grab_data)
 226             return E_OUTOFMEMORY;
 227     }
 228     TRACE("Using mmap: %d\n", capBox->mmap);
 229     return S_OK;
 230 }
 231
 232 static void V4l_Unprepare(Capture *capBox)
 233 {
 234     if (capBox->mmap)
 235     {
 236         for (capBox->curframe = 0; capBox->curframe < capBox->buffers; capBox->curframe++)
 237             xioctl(capBox->fd, VIDIOCSYNC, &capBox->grab_buf[capBox->curframe]);
 238         video_munmap(capBox->pmap, capBox->gb_buffers.size);
 239         CoTaskMemFree(capBox->grab_buf);
 240     }
 241     else
 242         CoTaskMemFree(capBox->grab_data);
 243 }
 244
 245 HRESULT qcap_driver_destroy(Capture *capBox)
 246 {
 247     TRACE("%p\n", capBox);
 248
 249     if( capBox->fd != -1 )
 250         video_close(capBox->fd);
 251     capBox->CritSect.DebugInfo->Spare[0] = 0;
 252     DeleteCriticalSection(&capBox->CritSect);
 253     CoTaskMemFree(capBox);
 254     return S_OK;
 255 }
 256
 257 HRESULT qcap_driver_set_format(Capture *capBox, AM_MEDIA_TYPE * mT)
 258 {
 259     int newheight, newwidth;
 260     struct video_window window;
 261     VIDEOINFOHEADER *format;
 262
 263     TRACE("%p\n", capBox);
 264
 265     format = (VIDEOINFOHEADER *) mT->pbFormat;
 266     if (format->bmiHeader.biBitCount != 24 ||
 267         format->bmiHeader.biCompression != BI_RGB)
 268     {
 269         FIXME("unsupported media type %d %d\n", format->bmiHeader.biBitCount,
 270               format->bmiHeader.biCompression );
 271         return VFW_E_INVALIDMEDIATYPE;
 272     }
 273
 274     newwidth = format->bmiHeader.biWidth;
 275     newheight = format->bmiHeader.biHeight;
 276
 277     TRACE("%p -> (%p) - %d %d\n", capBox, mT, newwidth, newheight);
 278
 279     if (capBox->height == newheight && capBox->width == newwidth)
 280         return S_OK;
 281
 282     if(-1 == xioctl(capBox->fd, VIDIOCGWIN, &window))
 283     {
 284         ERR("ioctl(VIDIOCGWIN) failed (%d)\n", errno);
 285         return E_FAIL;
 286     }
 287     window.width = newwidth;
 288     window.height = newheight;
 289     if (xioctl(capBox->fd, VIDIOCSWIN, &window) == -1)
 290     {
 291         TRACE("using software resize: %dx%d -> %dx%d\n",
 292                window.width, window.height, capBox->width, capBox->height);
 293         capBox->swresize = TRUE;
 294     }
 295     else
 296     {
 297         capBox->height = window.height;
 298         capBox->width = window.width;
 299         capBox->swresize = FALSE;
 300     }
 301     capBox->outputwidth = window.width;
 302     capBox->outputheight = window.height;
 303     return S_OK;
 304 }
 305
 306 HRESULT qcap_driver_get_format(const Capture *capBox, AM_MEDIA_TYPE ** mT)
 307 {
 308     VIDEOINFOHEADER *vi;
 309
 310     mT[0] = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
 311     if (!mT[0])
 312         return E_OUTOFMEMORY;
 313     vi = CoTaskMemAlloc(sizeof(VIDEOINFOHEADER));
 314     mT[0]->cbFormat = sizeof(VIDEOINFOHEADER);
 315     if (!vi)
 316     {
 317         CoTaskMemFree(mT[0]);
 318         mT[0] = NULL;
 319         return E_OUTOFMEMORY;
 320     }
 321     mT[0]->majortype = MEDIATYPE_Video;
 322     mT[0]->subtype = MEDIASUBTYPE_RGB24;
 323     mT[0]->formattype = FORMAT_VideoInfo;
 324     mT[0]->bFixedSizeSamples = TRUE;
 325     mT[0]->bTemporalCompression = FALSE;
 326     mT[0]->pUnk = NULL;
 327     mT[0]->lSampleSize = capBox->outputwidth * capBox->outputheight * capBox->bitDepth / 8;
 328     TRACE("Output format: %dx%d - %d bits = %u KB\n", capBox->outputwidth,
 329           capBox->outputheight, capBox->bitDepth, mT[0]->lSampleSize/1024);
 330     vi->rcSource.left = 0; vi->rcSource.top = 0;
 331     vi->rcTarget.left = 0; vi->rcTarget.top = 0;
 332     vi->rcSource.right = capBox->width; vi->rcSource.bottom = capBox->height;
 333     vi->rcTarget.right = capBox->outputwidth; vi->rcTarget.bottom = capBox->outputheight;
 334     vi->dwBitRate = capBox->fps * mT[0]->lSampleSize;
 335     vi->dwBitErrorRate = 0;
 336     vi->AvgTimePerFrame = (LONGLONG)10000000.0 / (LONGLONG)capBox->fps;
 337     vi->bmiHeader.biSize = 40;
 338     vi->bmiHeader.biWidth = capBox->outputwidth;
 339     vi->bmiHeader.biHeight = capBox->outputheight;
 340     vi->bmiHeader.biPlanes = 1;
 341     vi->bmiHeader.biBitCount = 24;
 342     vi->bmiHeader.biCompression = BI_RGB;
 343     vi->bmiHeader.biSizeImage = mT[0]->lSampleSize;
 344     vi->bmiHeader.biClrUsed = vi->bmiHeader.biClrImportant = 0;
 345     vi->bmiHeader.biXPelsPerMeter = 100;
 346     vi->bmiHeader.biYPelsPerMeter = 100;
 347     mT[0]->pbFormat = (void *)vi;
 348     dump_AM_MEDIA_TYPE(mT[0]);
 349     return S_OK;
 350 }
 351
 352 HRESULT qcap_driver_get_prop_range( Capture *capBox,
 353             VideoProcAmpProperty Property, LONG *pMin, LONG *pMax,
 354             LONG *pSteppingDelta, LONG *pDefault, LONG *pCapsFlags )
 355 {
 356     TRACE("%p -> %d %p %p %p %p %p\n", capBox, Property,
 357           pMin, pMax, pSteppingDelta, pDefault, pCapsFlags);
 358
 359     switch (Property)
 360     {
 361     case VideoProcAmp_Brightness:
 362         *pDefault = capBox->dbrightness;
 363         break;
 364     case VideoProcAmp_Contrast:
 365         *pDefault = capBox->dcontrast;
 366         break;
 367     case VideoProcAmp_Hue:
 368         *pDefault = capBox->dhue;
 369         break;
 370     case VideoProcAmp_Saturation:
 371         *pDefault = capBox->dcolour;
 372         break;
 373     default:
 374         FIXME("Not implemented %d\n", Property);
 375         return E_NOTIMPL;
 376     }
 377     *pMin = 0;
 378     *pMax = 65535;
 379     *pSteppingDelta = 65536/256;
 380     *pCapsFlags = VideoProcAmp_Flags_Manual;
 381     return S_OK;
 382 }
 383
 384 HRESULT qcap_driver_get_prop( Capture *capBox,
 385             VideoProcAmpProperty Property, LONG *lValue, LONG *Flags )
 386 {
 387     TRACE("%p -> %d %p %p\n", capBox, Property, lValue, Flags);
 388
 389     switch (Property)
 390     {
 391     case VideoProcAmp_Brightness:
 392         *lValue = capBox->pict.brightness;
 393         break;
 394     case VideoProcAmp_Contrast:
 395         *lValue = capBox->pict.contrast;
 396         break;
 397     case VideoProcAmp_Hue:
 398         *lValue = capBox->pict.hue;
 399         break;
 400     case VideoProcAmp_Saturation:
 401         *lValue = capBox->pict.colour;
 402         break;
 403     default:
 404         FIXME("Not implemented %d\n", Property);
 405         return E_NOTIMPL;
 406     }
 407     *Flags = VideoProcAmp_Flags_Manual;
 408     return S_OK;
 409 }
 410
 411 HRESULT qcap_driver_set_prop(Capture *capBox, VideoProcAmpProperty Property,
 412             LONG lValue, LONG Flags)
 413 {
 414     TRACE("%p -> %d %d %d\n", capBox, Property, lValue, Flags);
 415
 416     switch (Property)
 417     {
 418     case VideoProcAmp_Brightness:
 419         capBox->pict.brightness = lValue;
 420         break;
 421     case VideoProcAmp_Contrast:
 422         capBox->pict.contrast = lValue;
 423         break;
 424     case VideoProcAmp_Hue:
 425         capBox->pict.hue = lValue;
 426         break;
 427     case VideoProcAmp_Saturation:
 428         capBox->pict.colour = lValue;
 429         break;
 430     default:
 431         FIXME("Not implemented %d\n", Property);
 432         return E_NOTIMPL;
 433     }
 434
 435     if (xioctl(capBox->fd, VIDIOCSPICT, &capBox->pict) == -1)
 436     {
 437         ERR("ioctl(VIDIOCSPICT) failed (%d)\n",errno);
 438         return E_FAIL;
 439     }
 440     return S_OK;
 441 }
 442
 443 static void renderer_RGB(const Capture *capBox, LPBYTE bufferin, const BYTE *stream)
 444 {
 445     int depth = renderlist_V4l[capBox->pict.palette].depth;
 446     int size = capBox->height * capBox->width * depth / 8;
 447     int pointer, offset;
 448
 449     switch (depth)
 450     {
 451     case 24:
 452         memcpy(bufferin, stream, size);
 453         break;
 454     case 32:
 455         pointer = 0;
 456         offset = 1;
 457         while (pointer + offset <= size)
 458         {
 459             bufferin[pointer] = stream[pointer + offset];
 460             pointer++;
 461             bufferin[pointer] = stream[pointer + offset];
 462             pointer++;
 463             bufferin[pointer] = stream[pointer + offset];
 464             pointer++;
 465             offset++;
 466         }
 467         break;
 468     default:
 469         ERR("Unknown bit depth %d\n", depth);
 470         return;
 471     }
 472 }
 473
 474 static void renderer_YUV(const Capture *capBox, LPBYTE bufferin, const BYTE *stream)
 475 {
 476     enum YUV_Format format;
 477
 478     switch (capBox->pict.palette)
 479     {
 480     case  7: /* YUV422  -  same as YUYV */
 481     case  8: /* YUYV    */
 482         format = YUYV;
 483         break;
 484     case  9: /* UYVY    */
 485         format = UYVY;
 486         break;
 487     case 11: /* YUV411  */
 488         format = UYYVYY;
 489         break;
 490     case 13: /* YUV422P */
 491         format = YUVP_421;
 492         break;
 493     case 14: /* YUV411P */
 494         format = YUVP_441;
 495         break;
 496     case 15: /* YUV420P */
 497         format = YUVP_422;
 498         break;
 499     case 16: /* YUV410P */
 500         format = YUVP_444;
 501         break;
 502     default:
 503         ERR("Unknown palette %d\n", capBox->pict.palette);
 504         return;
 505     }
 506     YUV_To_RGB24(format, bufferin, stream, capBox->width, capBox->height);
 507 }
 508
 509 static void Resize(const Capture * capBox, LPBYTE output, const BYTE *input)
 510 {
 511     /* the whole image needs to be reversed,
 512        because the dibs are messed up in windows */
 513     if (!capBox->swresize)
 514     {
 515         int depth = capBox->bitDepth / 8;
 516         int inoffset = 0, outoffset = capBox->height * capBox->width * depth;
 517         int ow = capBox->width * depth;
 518         while (outoffset > 0)
 519         {
 520             int x;
 521             outoffset -= ow;
 522             for (x = 0; x < ow; x++)
 523                 output[outoffset + x] = input[inoffset + x];
 524             inoffset += ow;
 525         }
 526     }
 527     else
 528     {
 529         HDC dc_s, dc_d;
 530         HBITMAP bmp_s, bmp_d;
 531         int depth = capBox->bitDepth / 8;
 532         int inoffset = 0, outoffset = (capBox->outputheight) * capBox->outputwidth * depth;
 533         int ow = capBox->outputwidth * depth;
 534         LPBYTE myarray;
 535
 536         /* FIXME: Improve software resizing: add error checks and optimize */
 537
 538         myarray = CoTaskMemAlloc(capBox->outputwidth * capBox->outputheight * depth);
 539         dc_s = CreateCompatibleDC(NULL);
 540         dc_d = CreateCompatibleDC(NULL);
 541         bmp_s = CreateBitmap(capBox->width, capBox->height, 1, capBox->bitDepth, input);
 542         bmp_d = CreateBitmap(capBox->outputwidth, capBox->outputheight, 1, capBox->bitDepth, NULL);
 543         SelectObject(dc_s, bmp_s);
 544         SelectObject(dc_d, bmp_d);
 545         StretchBlt(dc_d, 0, 0, capBox->outputwidth, capBox->outputheight,
 546                    dc_s, 0, 0, capBox->width, capBox->height, SRCCOPY);
 547         GetBitmapBits(bmp_d, capBox->outputwidth * capBox->outputheight * depth, myarray);
 548         while (outoffset > 0)
 549         {
 550             int i;
 551
 552             outoffset -= ow;
 553             for (i = 0; i < ow; i++)
 554                 output[outoffset + i] = myarray[inoffset + i];
 555             inoffset += ow;
 556         }
 557         CoTaskMemFree(myarray);
 558         DeleteObject(dc_s);
 559         DeleteObject(dc_d);
 560         DeleteObject(bmp_s);
 561         DeleteObject(bmp_d);
 562     }
 563 }
 564
 565 static void V4l_GetFrame(Capture * capBox, unsigned char ** pInput)
 566 {
 567     if (capBox->mmap)
 568     {
 569         if (xioctl(capBox->fd, VIDIOCSYNC, &capBox->grab_buf[capBox->curframe]) == -1)
 570             WARN("Syncing ioctl failed: %d\n", errno);
 571
 572         *pInput = capBox->pmap + capBox->gb_buffers.offsets[capBox->curframe];
 573     }
 574     else
 575     {
 576         int retval;
 577         while ((retval = video_read(capBox->fd, capBox->grab_data, capBox->imagesize)) == -1)
 578             if (errno != EAGAIN) break;
 579         if (retval == -1)
 580             WARN("Error occurred while reading from device: %s\n", strerror(errno));
 581         *pInput = (unsigned char*) capBox->grab_data;
 582     }
 583 }
 584
 585 static void V4l_FreeFrame(Capture * capBox)
 586 {
 587     TRACE("\n");
 588     if (capBox->mmap)
 589     {
 590         if (xioctl(capBox->fd, VIDIOCMCAPTURE, &capBox->grab_buf[capBox->curframe]) == -1)
 591            ERR("Freeing frame for capture failed: %s\n", strerror(errno));
 592     }
 593     if (++capBox->curframe == capBox->buffers)
 594         capBox->curframe = 0;
 595 }
 596
 597 static DWORD WINAPI ReadThread(LPVOID lParam)
 598 {
 599     Capture * capBox = lParam;
 600     HRESULT hr;
 601     IMediaSample *pSample = NULL;
 602     ULONG framecount = 0;
 603     unsigned char *pTarget, *pInput, *pOutput;
 604
 605     hr = V4l_Prepare(capBox);
 606     if (FAILED(hr))
 607     {
 608         ERR("Stop IFilterGraph: %x\n", hr);
 609         capBox->thread = 0;
 610         capBox->stopped = TRUE;
 611         return 0;
 612     }
 613
 614     pOutput = CoTaskMemAlloc(capBox->width * capBox->height * capBox->bitDepth / 8);
 615     capBox->curframe = 0;
 616     do {
 617         V4l_FreeFrame(capBox);
 618     } while (capBox->curframe != 0);
 619
 620     while (1)
 621     {
 622         EnterCriticalSection(&capBox->CritSect);
 623         if (capBox->stopped)
 624             break;
 625         hr = BaseOutputPinImpl_GetDeliveryBuffer((BaseOutputPin *)capBox->pOut, &pSample, NULL, NULL, 0);
 626         if (SUCCEEDED(hr))
 627         {
 628             int len;
 629
 630             if (!capBox->swresize)
 631                 len = capBox->height * capBox->width * capBox->bitDepth / 8;
 632             else
 633                 len = capBox->outputheight * capBox->outputwidth * capBox->bitDepth / 8;
 634             IMediaSample_SetActualDataLength(pSample, len);
 635
 636             len = IMediaSample_GetActualDataLength(pSample);
 637             TRACE("Data length: %d KB\n", len / 1024);
 638
 639             IMediaSample_GetPointer(pSample, &pTarget);
 640             /* FIXME: Check return values.. */
 641             V4l_GetFrame(capBox, &pInput);
 642             capBox->renderer(capBox, pOutput, pInput);
 643             Resize(capBox, pTarget, pOutput);
 644             hr = BaseOutputPinImpl_Deliver((BaseOutputPin *)capBox->pOut, pSample);
 645             TRACE("%p -> Frame %u: %x\n", capBox, ++framecount, hr);
 646             IMediaSample_Release(pSample);
 647             V4l_FreeFrame(capBox);
 648         }
 649         if (FAILED(hr) && hr != VFW_E_NOT_CONNECTED)
 650         {
 651             TRACE("Return %x, stop IFilterGraph\n", hr);
 652             V4l_Unprepare(capBox);
 653             capBox->thread = 0;
 654             capBox->stopped = TRUE;
 655             break;
 656         }
 657         LeaveCriticalSection(&capBox->CritSect);
 658     }
 659
 660     LeaveCriticalSection(&capBox->CritSect);
 661     CoTaskMemFree(pOutput);
 662     return 0;
 663 }
 664
 665 HRESULT qcap_driver_run(Capture *capBox, FILTER_STATE *state)
 666 {
 667     HANDLE thread;
 668     HRESULT hr;
 669
 670     TRACE("%p -> (%p)\n", capBox, state);
 671
 672     if (*state == State_Running) return S_OK;
 673
 674     EnterCriticalSection(&capBox->CritSect);
 675
 676     capBox->stopped = FALSE;
 677
 678     if (*state == State_Stopped)
 679     {
 680         *state = State_Running;
 681         if (!capBox->iscommitted)
 682         {
 683             ALLOCATOR_PROPERTIES ap, actual;
 684             BaseOutputPin *out;
 685
 686             capBox->iscommitted = TRUE;
 687
 688             ap.cBuffers = 3;
 689             if (!capBox->swresize)
 690                 ap.cbBuffer = capBox->width * capBox->height;
 691             else
 692                 ap.cbBuffer = capBox->outputwidth * capBox->outputheight;
 693             ap.cbBuffer = (ap.cbBuffer * capBox->bitDepth) / 8;
 694             ap.cbAlign = 1;
 695             ap.cbPrefix = 0;
 696
 697             out = (BaseOutputPin *)capBox->pOut;
 698
 699             hr = IMemAllocator_SetProperties(out->pAllocator, &ap, &actual);
 700
 701             if (SUCCEEDED(hr))
 702                 hr = IMemAllocator_Commit(out->pAllocator);
 703
 704             TRACE("Committing allocator: %x\n", hr);
 705         }
 706
 707         thread = CreateThread(NULL, 0, ReadThread, capBox, 0, NULL);
 708         if (thread)
 709         {
 710             capBox->thread = thread;
 711             SetThreadPriority(thread, THREAD_PRIORITY_LOWEST);
 712             LeaveCriticalSection(&capBox->CritSect);
 713             return S_OK;
 714         }
 715         ERR("Creating thread failed.. %u\n", GetLastError());
 716         LeaveCriticalSection(&capBox->CritSect);
 717         return E_FAIL;
 718     }
 719
 720     ResumeThread(capBox->thread);
 721     *state = State_Running;
 722     LeaveCriticalSection(&capBox->CritSect);
 723     return S_OK;
 724 }
 725
 726 HRESULT qcap_driver_pause(Capture *capBox, FILTER_STATE *state)
 727 {
 728     TRACE("%p -> (%p)\n", capBox, state);
 729
 730     if (*state == State_Paused)
 731         return S_OK;
 732     if (*state == State_Stopped)
 733         qcap_driver_run(capBox, state);
 734
 735     EnterCriticalSection(&capBox->CritSect);
 736     *state = State_Paused;
 737     SuspendThread(capBox->thread);
 738     LeaveCriticalSection(&capBox->CritSect);
 739
 740     return S_OK;
 741 }
 742
 743 HRESULT qcap_driver_stop(Capture *capBox, FILTER_STATE *state)
 744 {
 745     TRACE("%p -> (%p)\n", capBox, state);
 746
 747     if (*state == State_Stopped)
 748         return S_OK;
 749
 750     EnterCriticalSection(&capBox->CritSect);
 751
 752     if (capBox->thread)
 753     {
 754         if (*state == State_Paused)
 755             ResumeThread(capBox->thread);
 756         capBox->stopped = TRUE;
 757         capBox->thread = 0;
 758         if (capBox->iscommitted)
 759         {
 760             BaseOutputPin *out;
 761             HRESULT hr;
 762
 763             capBox->iscommitted = FALSE;
 764
 765             out = (BaseOutputPin*)capBox->pOut;
 766
 767             hr = IMemAllocator_Decommit(out->pAllocator);
 768
 769             if (hr != S_OK && hr != VFW_E_NOT_COMMITTED)
 770                 WARN("Decommitting allocator: %x\n", hr);
 771         }
 772         V4l_Unprepare(capBox);
 773     }
 774
 775     *state = State_Stopped;
 776     LeaveCriticalSection(&capBox->CritSect);
 777     return S_OK;
 778 }
 779
 780 Capture * qcap_driver_init( IPin *pOut, USHORT card )
 781 {
 782     Capture * capBox = NULL;
 783     char device[20];
 784     struct video_capability capa;
 785     struct video_picture pict;
 786     struct video_window window;
 787
 788     YUV_Init();
 789     video_init();
 790
 791     capBox = CoTaskMemAlloc(sizeof(Capture));
 792     if (!capBox)
 793         goto error;
 794
 795     /* capBox->vtbl = &defboxVtbl; */
 796
 797     InitializeCriticalSection( &capBox->CritSect );
 798     capBox->CritSect.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": Capture.CritSect");
 799
 800     sprintf(device, "/dev/video%i", card);
 801     TRACE("opening %s\n", device);
 802 #ifdef O_CLOEXEC
 803     if ((capBox->fd = video_open(device, O_RDWR | O_NONBLOCK | O_CLOEXEC)) == -1 && errno == EINVAL)
 804 #endif
 805         capBox->fd = video_open(device, O_RDWR | O_NONBLOCK);
 806     if (capBox->fd == -1)
 807     {
 808         WARN("open failed (%d)\n", errno);
 809         goto error;
 810     }
 811     fcntl( capBox->fd, F_SETFD, FD_CLOEXEC );  /* in case O_CLOEXEC isn't supported */
 812
 813     memset(&capa, 0, sizeof(capa));
 814
 815     if (xioctl(capBox->fd, VIDIOCGCAP, &capa) == -1)
 816     {
 817         WARN("ioctl(VIDIOCGCAP) failed (%d)\n", errno);
 818         goto error;
 819     }
 820
 821     if (!(capa.type & VID_TYPE_CAPTURE))
 822     {
 823         WARN("not a video capture device\n");
 824         goto error;
 825     }
 826
 827     TRACE("%d inputs on %s\n", capa.channels, capa.name );
 828
 829     if (xioctl(capBox->fd, VIDIOCGPICT, &pict) == -1)
 830     {
 831         ERR("ioctl(VIDIOCGPICT) failed (%d)\n", errno );
 832         goto error;
 833     }
 834
 835     TRACE("depth %d palette %d (%s) hue %d color %d contrast %d\n",
 836           pict.depth, pict.palette, renderlist_V4l[pict.palette].name,
 837           pict.hue, pict.colour, pict.contrast );
 838
 839     capBox->dbrightness = pict.brightness;
 840     capBox->dcolour = pict.colour;
 841     capBox->dhue = pict.hue;
 842     capBox->dcontrast = pict.contrast;
 843
 844     if (!renderlist_V4l[pict.palette].renderer)
 845     {
 846         int palet = pict.palette, i;
 847
 848         TRACE("No renderer available for %s, falling back to defaults\n",
 849              renderlist_V4l[pict.palette].name);
 850         capBox->renderer = NULL;
 851         for (i = 0; fallback_V4l[i] >=0 ; i++)
 852         {
 853             int n = fallback_V4l[i];
 854
 855             if (renderlist_V4l[n].renderer == NULL)
 856                 continue;
 857
 858             pict.depth = renderlist_V4l[n].depth;
 859             pict.palette = n;
 860             if (xioctl(capBox->fd, VIDIOCSPICT, &pict) == -1)
 861             {
 862                 TRACE("Could not render with %s (%d)\n",
 863                       renderlist_V4l[n].name, n);
 864                 continue;
 865             }
 866             TRACE("using renderer %s (%d)\n",
 867                   renderlist_V4l[n].name, n);
 868             capBox->renderer = renderlist_V4l[n].renderer;
 869             break;
 870         }
 871
 872         if (!capBox->renderer)
 873         {
 874             ERR("video format %s isn't available\n",
 875                  renderlist_V4l[palet].name);
 876             goto error;
 877         }
 878     }
 879     else
 880     {
 881         TRACE("Using the suggested format\n");
 882         capBox->renderer = renderlist_V4l[pict.palette].renderer;
 883     }
 884     memcpy(&capBox->pict, &pict, sizeof(struct video_picture));
 885
 886     memset(&window, 0, sizeof(window));
 887     if (xioctl(capBox->fd, VIDIOCGWIN, &window) == -1)
 888     {
 889         WARN("VIDIOCGWIN failed (%d)\n", errno);
 890         goto error;
 891     }
 892
 893     capBox->height = capBox->outputheight = window.height;
 894     capBox->width = capBox->outputwidth = window.width;
 895     capBox->swresize = FALSE;
 896     capBox->bitDepth = 24;
 897     capBox->pOut = pOut;
 898     capBox->fps = 3;
 899     capBox->stopped = FALSE;
 900     capBox->curframe = 0;
 901     capBox->iscommitted = FALSE;
 902
 903     TRACE("format: %d bits - %d x %d\n", capBox->bitDepth, capBox->width, capBox->height);
 904
 905     return capBox;
 906
 907 error:
 908     if (capBox)
 909         qcap_driver_destroy( capBox );
 910
 911     return NULL;
 912 }
 913
 914 #else
 915
 916 Capture * qcap_driver_init( IPin *pOut, USHORT card )
 917 {
 918     static const char msg[] =
 919         "The v4l headers were not available at compile time,\n"
 920         "so video capture support is not available.\n";
 921     MESSAGE(msg);
 922     return NULL;
 923 }
 924
 925 #define FAIL_WITH_ERR \
 926     ERR("v4l absent: shouldn't be called\n"); \
 927     return E_NOTIMPL
 928
 929 HRESULT qcap_driver_destroy(Capture *capBox)
 930 {
 931     FAIL_WITH_ERR;
 932 }
 933
 934 HRESULT qcap_driver_set_format(Capture *capBox, AM_MEDIA_TYPE * mT)
 935 {
 936     FAIL_WITH_ERR;
 937 }
 938
 939 HRESULT qcap_driver_get_format(const Capture *capBox, AM_MEDIA_TYPE ** mT)
 940 {
 941     FAIL_WITH_ERR;
 942 }
 943
 944 HRESULT qcap_driver_get_prop_range( Capture *capBox,
 945         VideoProcAmpProperty  Property, LONG *pMin, LONG *pMax,
 946         LONG *pSteppingDelta, LONG *pDefault, LONG *pCapsFlags )
 947 {
 948     FAIL_WITH_ERR;
 949 }
 950
 951 HRESULT qcap_driver_get_prop(Capture *capBox,
 952         VideoProcAmpProperty Property, LONG *lValue, LONG *Flags)
 953 {
 954     FAIL_WITH_ERR;
 955 }
 956
 957 HRESULT qcap_driver_set_prop(Capture *capBox, VideoProcAmpProperty Property,
 958         LONG lValue, LONG Flags)
 959 {
 960     FAIL_WITH_ERR;
 961 }
 962
 963 HRESULT qcap_driver_run(Capture *capBox, FILTER_STATE *state)
 964 {
 965     FAIL_WITH_ERR;
 966 }
 967
 968 HRESULT qcap_driver_pause(Capture *capBox, FILTER_STATE *state)
 969 {
 970     FAIL_WITH_ERR;
 971 }
 972
 973 HRESULT qcap_driver_stop(Capture *capBox, FILTER_STATE *state)
 974 {
 975     FAIL_WITH_ERR;
 976 }
 977
 978 #endif /* defined(VIDIOCMCAPTURE) */