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         goto fail;
 608
 609     pOutput = CoTaskMemAlloc(capBox->width * capBox->height * capBox->bitDepth / 8);
 610     capBox->curframe = 0;
 611     do {
 612         V4l_FreeFrame(capBox);
 613     } while (capBox->curframe != 0);
 614
 615     while (1)
 616     {
 617         EnterCriticalSection(&capBox->CritSect);
 618         if (capBox->stopped)
 619             break;
 620         hr = BaseOutputPinImpl_GetDeliveryBuffer((BaseOutputPin *)capBox->pOut, &pSample, NULL, NULL, 0);
 621         if (SUCCEEDED(hr))
 622         {
 623             int len;
 624
 625             if (!capBox->swresize)
 626                 len = capBox->height * capBox->width * capBox->bitDepth / 8;
 627             else
 628                 len = capBox->outputheight * capBox->outputwidth * capBox->bitDepth / 8;
 629             IMediaSample_SetActualDataLength(pSample, len);
 630
 631             len = IMediaSample_GetActualDataLength(pSample);
 632             TRACE("Data length: %d KB\n", len / 1024);
 633
 634             IMediaSample_GetPointer(pSample, &pTarget);
 635             /* FIXME: Check return values.. */
 636             V4l_GetFrame(capBox, &pInput);
 637             capBox->renderer(capBox, pOutput, pInput);
 638             Resize(capBox, pTarget, pOutput);
 639             hr = BaseOutputPinImpl_Deliver((BaseOutputPin *)capBox->pOut, pSample);
 640             TRACE("%p -> Frame %u: %x\n", capBox, ++framecount, hr);
 641             IMediaSample_Release(pSample);
 642             V4l_FreeFrame(capBox);
 643         }
 644         LeaveCriticalSection(&capBox->CritSect);
 645         if (FAILED(hr) && hr != VFW_E_NOT_CONNECTED)
 646         {
 647             ERR("Received error: %x\n", hr);
 648             goto cfail;
 649         }
 650     }
 651     LeaveCriticalSection(&capBox->CritSect);
 652     CoTaskMemFree(pOutput);
 653
 654     return 0;
 655
 656 cfail:
 657     CoTaskMemFree(pOutput);
 658     V4l_Unprepare(capBox);
 659     LeaveCriticalSection(&capBox->CritSect);
 660
 661 fail:
 662     capBox->thread = 0;
 663     capBox->stopped = TRUE;
 664     FIXME("Stop IFilterGraph\n");
 665     return 0;
 666 }
 667
 668 HRESULT qcap_driver_run(Capture *capBox, FILTER_STATE *state)
 669 {
 670     HANDLE thread;
 671     HRESULT hr;
 672
 673     TRACE("%p -> (%p)\n", capBox, state);
 674
 675     if (*state == State_Running) return S_OK;
 676
 677     EnterCriticalSection(&capBox->CritSect);
 678
 679     capBox->stopped = FALSE;
 680
 681     if (*state == State_Stopped)
 682     {
 683         *state = State_Running;
 684         if (!capBox->iscommitted)
 685         {
 686             ALLOCATOR_PROPERTIES ap, actual;
 687             BaseOutputPin *out;
 688
 689             capBox->iscommitted = TRUE;
 690
 691             ap.cBuffers = 3;
 692             if (!capBox->swresize)
 693                 ap.cbBuffer = capBox->width * capBox->height;
 694             else
 695                 ap.cbBuffer = capBox->outputwidth * capBox->outputheight;
 696             ap.cbBuffer = (ap.cbBuffer * capBox->bitDepth) / 8;
 697             ap.cbAlign = 1;
 698             ap.cbPrefix = 0;
 699
 700             out = (BaseOutputPin *)capBox->pOut;
 701
 702             hr = IMemAllocator_SetProperties(out->pAllocator, &ap, &actual);
 703
 704             if (SUCCEEDED(hr))
 705                 hr = IMemAllocator_Commit(out->pAllocator);
 706
 707             TRACE("Committing allocator: %x\n", hr);
 708         }
 709
 710         thread = CreateThread(NULL, 0, ReadThread, capBox, 0, NULL);
 711         if (thread)
 712         {
 713             capBox->thread = thread;
 714             SetThreadPriority(thread, THREAD_PRIORITY_LOWEST);
 715             LeaveCriticalSection(&capBox->CritSect);
 716             return S_OK;
 717         }
 718         ERR("Creating thread failed.. %u\n", GetLastError());
 719         LeaveCriticalSection(&capBox->CritSect);
 720         return E_FAIL;
 721     }
 722
 723     ResumeThread(capBox->thread);
 724     *state = State_Running;
 725     LeaveCriticalSection(&capBox->CritSect);
 726     return S_OK;
 727 }
 728
 729 HRESULT qcap_driver_pause(Capture *capBox, FILTER_STATE *state)
 730 {
 731     TRACE("%p -> (%p)\n", capBox, state);
 732
 733     if (*state == State_Paused)
 734         return S_OK;
 735     if (*state == State_Stopped)
 736         qcap_driver_run(capBox, state);
 737
 738     EnterCriticalSection(&capBox->CritSect);
 739     *state = State_Paused;
 740     SuspendThread(capBox->thread);
 741     LeaveCriticalSection(&capBox->CritSect);
 742
 743     return S_OK;
 744 }
 745
 746 HRESULT qcap_driver_stop(Capture *capBox, FILTER_STATE *state)
 747 {
 748     TRACE("%p -> (%p)\n", capBox, state);
 749
 750     if (*state == State_Stopped)
 751         return S_OK;
 752
 753     EnterCriticalSection(&capBox->CritSect);
 754
 755     if (capBox->thread)
 756     {
 757         if (*state == State_Paused)
 758             ResumeThread(capBox->thread);
 759         capBox->stopped = TRUE;
 760         capBox->thread = 0;
 761         if (capBox->iscommitted)
 762         {
 763             BaseOutputPin *out;
 764             HRESULT hr;
 765
 766             capBox->iscommitted = FALSE;
 767
 768             out = (BaseOutputPin*)capBox->pOut;
 769
 770             hr = IMemAllocator_Decommit(out->pAllocator);
 771
 772             if (hr != S_OK && hr != VFW_E_NOT_COMMITTED)
 773                 WARN("Decommitting allocator: %x\n", hr);
 774         }
 775         V4l_Unprepare(capBox);
 776     }
 777
 778     *state = State_Stopped;
 779     LeaveCriticalSection(&capBox->CritSect);
 780     return S_OK;
 781 }
 782
 783 Capture * qcap_driver_init( IPin *pOut, USHORT card )
 784 {
 785     Capture * capBox = NULL;
 786     char device[20];
 787     struct video_capability capa;
 788     struct video_picture pict;
 789     struct video_window window;
 790
 791     YUV_Init();
 792     video_init();
 793
 794     capBox = CoTaskMemAlloc(sizeof(Capture));
 795     if (!capBox)
 796         goto error;
 797
 798     /* capBox->vtbl = &defboxVtbl; */
 799
 800     InitializeCriticalSection( &capBox->CritSect );
 801     capBox->CritSect.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": Capture.CritSect");
 802
 803     sprintf(device, "/dev/video%i", card);
 804     TRACE("opening %s\n", device);
 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
 812     memset(&capa, 0, sizeof(capa));
 813
 814     if (xioctl(capBox->fd, VIDIOCGCAP, &capa) == -1)
 815     {
 816         WARN("ioctl(VIDIOCGCAP) failed (%d)\n", errno);
 817         goto error;
 818     }
 819
 820     if (!(capa.type & VID_TYPE_CAPTURE))
 821     {
 822         WARN("not a video capture device\n");
 823         goto error;
 824     }
 825
 826     TRACE("%d inputs on %s\n", capa.channels, capa.name );
 827
 828     if (xioctl(capBox->fd, VIDIOCGPICT, &pict) == -1)
 829     {
 830         ERR("ioctl(VIDIOCGPICT) failed (%d)\n", errno );
 831         goto error;
 832     }
 833
 834     TRACE("depth %d palette %d (%s) hue %d color %d contrast %d\n",
 835           pict.depth, pict.palette, renderlist_V4l[pict.palette].name,
 836           pict.hue, pict.colour, pict.contrast );
 837
 838     capBox->dbrightness = pict.brightness;
 839     capBox->dcolour = pict.colour;
 840     capBox->dhue = pict.hue;
 841     capBox->dcontrast = pict.contrast;
 842
 843     if (!renderlist_V4l[pict.palette].renderer)
 844     {
 845         int palet = pict.palette, i;
 846
 847         TRACE("No renderer available for %s, falling back to defaults\n",
 848              renderlist_V4l[pict.palette].name);
 849         capBox->renderer = NULL;
 850         for (i = 0; fallback_V4l[i] >=0 ; i++)
 851         {
 852             int n = fallback_V4l[i];
 853
 854             if (renderlist_V4l[n].renderer == NULL)
 855                 continue;
 856
 857             pict.depth = renderlist_V4l[n].depth;
 858             pict.palette = n;
 859             if (xioctl(capBox->fd, VIDIOCSPICT, &pict) == -1)
 860             {
 861                 TRACE("Could not render with %s (%d)\n",
 862                       renderlist_V4l[n].name, n);
 863                 continue;
 864             }
 865             TRACE("using renderer %s (%d)\n",
 866                   renderlist_V4l[n].name, n);
 867             capBox->renderer = renderlist_V4l[n].renderer;
 868             break;
 869         }
 870
 871         if (!capBox->renderer)
 872         {
 873             ERR("video format %s isn't available\n",
 874                  renderlist_V4l[palet].name);
 875             goto error;
 876         }
 877     }
 878     else
 879     {
 880         TRACE("Using the suggested format\n");
 881         capBox->renderer = renderlist_V4l[pict.palette].renderer;
 882     }
 883     memcpy(&capBox->pict, &pict, sizeof(struct video_picture));
 884
 885     memset(&window, 0, sizeof(window));
 886     if (xioctl(capBox->fd, VIDIOCGWIN, &window) == -1)
 887     {
 888         WARN("VIDIOCGWIN failed (%d)\n", errno);
 889         goto error;
 890     }
 891
 892     capBox->height = capBox->outputheight = window.height;
 893     capBox->width = capBox->outputwidth = window.width;
 894     capBox->swresize = FALSE;
 895     capBox->bitDepth = 24;
 896     capBox->pOut = pOut;
 897     capBox->fps = 3;
 898     capBox->stopped = FALSE;
 899     capBox->curframe = 0;
 900     capBox->iscommitted = FALSE;
 901
 902     TRACE("format: %d bits - %d x %d\n", capBox->bitDepth, capBox->width, capBox->height);
 903
 904     return capBox;
 905
 906 error:
 907     if (capBox)
 908         qcap_driver_destroy( capBox );
 909
 910     return NULL;
 911 }
 912
 913 #else
 914
 915 Capture * qcap_driver_init( IPin *pOut, USHORT card )
 916 {
 917     const char msg[] =
 918         "The v4l headers were not available at compile time,\n"
 919         "so video capture support is not available.\n";
 920     MESSAGE(msg);
 921     return NULL;
 922 }
 923
 924 #define FAIL_WITH_ERR \
 925     ERR("v4l absent: shouldn't be called\n"); \
 926     return E_NOTIMPL
 927
 928 HRESULT qcap_driver_destroy(Capture *capBox)
 929 {
 930     FAIL_WITH_ERR;
 931 }
 932
 933 HRESULT qcap_driver_set_format(Capture *capBox, AM_MEDIA_TYPE * mT)
 934 {
 935     FAIL_WITH_ERR;
 936 }
 937
 938 HRESULT qcap_driver_get_format(const Capture *capBox, AM_MEDIA_TYPE ** mT)
 939 {
 940     FAIL_WITH_ERR;
 941 }
 942
 943 HRESULT qcap_driver_get_prop_range( Capture *capBox,
 944         VideoProcAmpProperty  Property, LONG *pMin, LONG *pMax,
 945         LONG *pSteppingDelta, LONG *pDefault, LONG *pCapsFlags )
 946 {
 947     FAIL_WITH_ERR;
 948 }
 949
 950 HRESULT qcap_driver_get_prop(Capture *capBox,
 951         VideoProcAmpProperty Property, LONG *lValue, LONG *Flags)
 952 {
 953     FAIL_WITH_ERR;
 954 }
 955
 956 HRESULT qcap_driver_set_prop(Capture *capBox, VideoProcAmpProperty Property,
 957         LONG lValue, LONG Flags)
 958 {
 959     FAIL_WITH_ERR;
 960 }
 961
 962 HRESULT qcap_driver_run(Capture *capBox, FILTER_STATE *state)
 963 {
 964     FAIL_WITH_ERR;
 965 }
 966
 967 HRESULT qcap_driver_pause(Capture *capBox, FILTER_STATE *state)
 968 {
 969     FAIL_WITH_ERR;
 970 }
 971
 972 HRESULT qcap_driver_stop(Capture *capBox, FILTER_STATE *state)
 973 {
 974     FAIL_WITH_ERR;
 975 }
 976
 977 #endif /* defined(VIDIOCMCAPTURE) */