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