libvo/vo_zr2.c

   1 /*
   2  * vo_zr2.c - playback on zoran cards
   3  * Based on vo_zr.c,v 1.27
   4  * Copyright (C) Rik Snel 2001-2005, License GNU GPL v2 or later
   5  */
   6
   7 /* $Id$ */
   8
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <unistd.h>
  13 #include <fcntl.h>
  14 #include <errno.h>
  15 #include <sys/stat.h>
  16 #include <sys/types.h>
  17 #include <sys/time.h>
  18 #include <sys/mman.h>
  19 #include <sys/ioctl.h>
  20 #include <linux/types.h>
  21 #include <linux/videodev.h>
  22 #include "config.h"
  23 #include "videodev_mjpeg.h"
  24 #include "video_out.h"
  25 #include "video_out_internal.h"
  26 #include "mp_msg.h"
  27 #include "subopt-helper.h"
  28 #include "fastmemcpy.h"
  29
  30 static const vo_info_t info = {
  31         "Zoran ZR360[56]7/ZR36060 Driver (DC10(+)/buz/lml33/MatroxRR)",
  32         "zr2",
  33         "Rik Snel <rsnel@cube.dyndns.org>",
  34         ""
  35 };
  36
  37 const LIBVO_EXTERN(zr2)
  38
  39 typedef struct {
  40         /* options */
  41         char *subdevice;
  42
  43         /* information for (and about) the zoran card */
  44
  45         unsigned char *buf;              /* the JPEGs will be placed here */
  46         struct mjpeg_requestbuffers zrq; /* info about this buffer */
  47
  48         int vdes;                        /* file descriptor of card */
  49         int playing;                     /* 0 or 1 */
  50         int frame, sync, queue;          /* buffer management */
  51         struct mjpeg_sync zs;            /* state information */
  52         struct mjpeg_params zp;
  53         struct video_capability vc;      /* max resolution and so on */
  54 } vo_zr2_priv_t;
  55
  56 static vo_zr2_priv_t priv;
  57
  58 #define ZR2_MJPEG_NBUFFERS      2
  59 #define ZR2_MJPEG_SIZE          1024*256
  60
  61 /* some convenient #define's, is this portable enough? */
  62 #define DBG2(...) mp_msg(MSGT_VO, MSGL_DBG2, "vo_zr2: " __VA_ARGS__)
  63 #define VERBOSE(...) mp_msg(MSGT_VO, MSGL_V, "vo_zr2: " __VA_ARGS__)
  64 #define ERROR(...) mp_msg(MSGT_VO, MSGL_ERR, "vo_zr2: " __VA_ARGS__)
  65 #define WARNING(...) mp_msg(MSGT_VO, MSGL_WARN, "vo_zr2: " __VA_ARGS__)
  66
  67 static void stop_playing(vo_zr2_priv_t *p) {
  68         if (p->playing) {
  69                 p->frame = -1;
  70                 if (ioctl(p->vdes, MJPIOC_QBUF_PLAY, &p->frame) < 0)
  71                         ERROR("error stopping playback\n");
  72                 p->playing = 0;
  73                 p->sync = 0;
  74                 p->queue = 0;
  75                 p->frame = 0;
  76         }
  77 }
  78
  79 static const char *guess_device(const char *suggestion, int inform) {
  80         struct stat vstat;
  81         int res;
  82         static const char * const devs[] = {
  83                 "/dev/video",
  84                 "/dev/video0",
  85                 "/dev/v4l/video0",
  86                 "/dev/v4l0",
  87                 "/dev/v4l",
  88                 NULL
  89         };
  90         const char * const *dev = devs;
  91
  92         if (suggestion) {
  93                 if (!*suggestion) {
  94                         ERROR("error: specified device name is empty string\n");
  95                         return NULL;
  96                 }
  97
  98                 res = stat(suggestion, &vstat);
  99                 if (res == 0 && S_ISCHR(vstat.st_mode)) {
 100                         if (inform) VERBOSE("using device %s\n", suggestion);
 101                         return suggestion;
 102                 } else {
 103                         if (res != 0) ERROR("%s does not exist\n", suggestion);
 104                         else ERROR("%s is no character device\n", suggestion);
 105                         /* don't try to be smarter than the user, just exit */
 106                         return NULL;
 107                 }
 108         }
 109
 110         while (*(++dev) != NULL) {
 111                 if (stat(*dev, &vstat) == 0 && S_ISCHR(vstat.st_mode)) {
 112                         VERBOSE("guessed video device %s\n", *dev);
 113                         return *dev;
 114                 }
 115                 dev++;
 116         }
 117
 118         ERROR("unable to find video device\n");
 119
 120         return NULL;
 121 }
 122
 123 static int query_format(uint32_t format) {
 124         if (format==IMGFMT_ZRMJPEGNI ||
 125                         format==IMGFMT_ZRMJPEGIT ||
 126                         format==IMGFMT_ZRMJPEGIB)
 127                 return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW;
 128         return 0;
 129 }
 130
 131 static uint32_t draw_image(mp_image_t *mpi) {
 132         vo_zr2_priv_t *p = &priv;
 133         int size = (int)mpi->planes[1];
 134         if (size > (int)p->zrq.size) {
 135                 ERROR("incoming JPEG image (size=%d) doesn't fit in buffer\n",
 136                                 size);
 137                 return VO_FALSE;
 138         }
 139
 140         /* looking for free buffer */
 141         if (p->queue - p->sync < (int)p->zrq.count) p->frame = p->queue;
 142         else {
 143                 if (ioctl(p->vdes, MJPIOC_SYNC, &p->zs) < 0) {
 144                         ERROR("error waiting for buffer to become free\n");
 145                         return VO_FALSE;
 146                 }
 147                 p->frame = p->zs.frame;
 148                 p->sync++;
 149         }
 150
 151         /* copy the jpeg image to the buffer which we acquired */
 152         fast_memcpy(p->buf + p->zrq.size*p->frame, mpi->planes[0], size);
 153
 154         return VO_TRUE;
 155 }
 156
 157 static const char *normstring(int norm) {
 158         switch (norm) {
 159                 case VIDEO_MODE_PAL:
 160                         return "PAL";
 161                 case VIDEO_MODE_NTSC:
 162                         return "NTSC";
 163                 case VIDEO_MODE_SECAM:
 164                         return "SECAM";
 165                 case VIDEO_MODE_AUTO:
 166                         return "auto";
 167         }
 168         return "undefined";
 169 }
 170
 171 static int get_norm(const char *n) {
 172         if (!strcmp(n, "PAL")) return VIDEO_MODE_PAL;
 173         if (!strcmp(n, "NTSC")) return VIDEO_MODE_NTSC;
 174         if (!strcmp(n, "SECAM")) return VIDEO_MODE_SECAM;
 175         if (!strcmp(n, "auto")) return VIDEO_MODE_AUTO;
 176         return -1; /* invalid */
 177 }
 178
 179 static int nc(const char **norm) {
 180         if (get_norm(*norm) == -1) {
 181                 ERROR("norm \"%s\" is not supported, choose from PAL, NTSC, SECAM and auto\n", *norm);
 182                 return 0;
 183         } else return 1;
 184 }
 185
 186 static int pbc(int *prebuf) {
 187         if (*prebuf) WARNING("prebuffering is not yet supported\n");
 188         return 1;
 189 }
 190
 191 static int preinit(const char *arg) {
 192         vo_zr2_priv_t *p = &priv;
 193         const char *dev = NULL;
 194         char *dev_arg = NULL, *norm_arg = NULL;
 195         int norm = VIDEO_MODE_AUTO, prebuf = 0;
 196         opt_t subopts[] = { /* don't want warnings with -Wall... */
 197                 { "dev",    OPT_ARG_MSTRZ, &dev_arg,   NULL,            0 },
 198                 { "prebuf", OPT_ARG_BOOL,  &prebuf,    (opt_test_f)pbc, 0 },
 199                 { "norm",   OPT_ARG_MSTRZ, &norm_arg,  (opt_test_f)nc,  0 },
 200                 { NULL,     0,             NULL,       NULL,            0 }
 201         };
 202
 203         VERBOSE("preinit() called with arg: %s\n", arg);
 204         memset(p, 0, sizeof(*p)); /* set defaults */
 205         p->vdes = -1;
 206
 207         if (subopt_parse(arg, subopts)) {
 208                 mp_msg(MSGT_VO, MSGL_FATAL,
 209                                 "Allowed suboptions for -vo zr2 are:\n"
 210                                 "-  dev=DEVICE               (default: %s)\n"
 211                                 "-  norm=PAL|NTSC|SECAM|auto (default: auto)\n"
 212                                 "-  prebuf/noprebuf          (default:"
 213                                 " noprebuf)\n"
 214                                 "\n"
 215                                 "Example: mplayer -vo zr2:dev=/dev/video1:"
 216                                 "norm=PAL movie.avi\n\n"
 217                                 , guess_device(NULL, 0));
 218                 free(norm_arg);
 219                 free(dev_arg);
 220                 return -1;
 221         }
 222
 223         /* interpret the strings we got from subopt_parse */
 224         if (norm_arg) {
 225                 norm = get_norm(norm_arg);
 226                 free(norm_arg);
 227         }
 228
 229         if (dev_arg) dev = dev_arg;
 230
 231         dev = guess_device(dev, 1);
 232         if (!dev) {
 233                 free(dev_arg);
 234                 uninit();
 235                 return 1;
 236         }
 237
 238         p->vdes = open(dev, O_RDWR);
 239         if (p->vdes < 0) {
 240                 ERROR("error opening %s: %s\n", dev, strerror(errno));
 241                 free(dev_arg);
 242                 uninit();
 243                 return 1;
 244         }
 245
 246         free(dev_arg);
 247
 248         /* check if we really are dealing with a zoran card */
 249         if (ioctl(p->vdes, MJPIOC_G_PARAMS, &p->zp) < 0) {
 250                 ERROR("%s probably is not a DC10(+)/buz/lml33\n", dev);
 251                 uninit();
 252                 return 1;
 253         }
 254
 255         VERBOSE("kernel driver version %d.%d, current norm is %s\n",
 256                         p->zp.major_version, p->zp.minor_version,
 257                         normstring(p->zp.norm));
 258
 259         /* changing the norm in the zoran_params and MJPIOC_S_PARAMS
 260          * does nothing the last time I tried, so bail out if the norm
 261          * is not correct */
 262         if (norm != VIDEO_MODE_AUTO &&  p->zp.norm != norm) {
 263                 ERROR("mplayer currently can't change the video norm, "
 264                                 "change it with (eg.) XawTV and retry.\n");
 265                 uninit();
 266                 return 1;
 267         }
 268
 269         /* gather useful information */
 270         if (ioctl(p->vdes, VIDIOCGCAP, &p->vc) < 0) {
 271                 ERROR("error getting video capabilities from %s\n", dev);
 272                 uninit();
 273                 return 1;
 274         }
 275
 276         VERBOSE("card reports maxwidth=%d, maxheight=%d\n",
 277                         p->vc.maxwidth, p->vc.maxheight);
 278
 279         /* according to the mjpegtools source, some cards return a bogus
 280          * vc.maxwidth, correct it here. If a new zoran card appears with a
 281          * maxwidth different 640, 720 or 768 this code may lead to problems */
 282         if (p->vc.maxwidth != 640 && p->vc.maxwidth != 768) {
 283                 VERBOSE("card probably reported bogus width (%d), "
 284                                 "changing to 720\n", p->vc.maxwidth);
 285                 p->vc.maxwidth = 720;
 286         }
 287
 288         p->zrq.count = ZR2_MJPEG_NBUFFERS;
 289         p->zrq.size = ZR2_MJPEG_SIZE;
 290
 291         if (ioctl(p->vdes, MJPIOC_REQBUFS, &p->zrq)) {
 292                 ERROR("error requesting %d buffers of size %d\n",
 293                                 ZR2_MJPEG_NBUFFERS, ZR2_MJPEG_NBUFFERS);
 294                 uninit();
 295                 return 1;
 296         }
 297
 298         VERBOSE("got %ld buffers of size %ld (wanted %d buffers of size %d)\n",
 299                         p->zrq.count, p->zrq.size, ZR2_MJPEG_NBUFFERS,
 300                         ZR2_MJPEG_SIZE);
 301
 302         p->buf = (unsigned char*)mmap(0, p->zrq.count*p->zrq.size,
 303                         PROT_READ|PROT_WRITE, MAP_SHARED, p->vdes, 0);
 304
 305         if (p->buf == MAP_FAILED) {
 306                 ERROR("error mapping requested buffers: %s", strerror(errno));
 307                 uninit();
 308                 return 1;
 309         }
 310
 311         return 0;
 312 }
 313
 314 static int config(uint32_t width, uint32_t height, uint32_t d_width,
 315         uint32_t d_height, uint32_t flags, char *title, uint32_t format) {
 316         int fields = 1, top_first = 1, err = 0;
 317         int stretchx = 1, stretchy = 1;
 318         struct mjpeg_params zptmp;
 319         vo_zr2_priv_t *p = &priv;
 320         VERBOSE("config() called\n");
 321
 322         /* paranoia check */
 323         if (!query_format(format)) {
 324                 ERROR("called with wrong format, should be impossible\n");
 325                 return 1;
 326         }
 327
 328         if ((int)height > p->vc.maxheight) {
 329                 ERROR("input height %d is too large, maxheight=%d\n",
 330                                 height, p->vc.maxheight);
 331                 err = 1;
 332         }
 333
 334         if (format != IMGFMT_ZRMJPEGNI) {
 335                 fields = 2;
 336                 if (format == IMGFMT_ZRMJPEGIB)
 337                         top_first = 0;
 338         } else if ((int)height > p->vc.maxheight/2) {
 339                 ERROR("input is too high (%d) for non-interlaced playback"
 340                                 "max=%d\n", height, p->vc.maxheight);
 341                 err = 1;
 342         }
 343
 344         if (width%16 != 0) {
 345                 ERROR("input width=%d, must be multiple of 16\n", width);
 346                 err = 1;
 347         }
 348
 349         if (height%(fields*8) != 0) {
 350                 ERROR("input height=%d, must be multiple of %d\n",
 351                                 height, 2*fields);
 352                 err = 1;
 353         }
 354
 355         /* we assume sample_aspect = 1 */
 356         if (fields == 1) {
 357                 if (2*d_width <= (uint32_t)p->vc.maxwidth) {
 358                         VERBOSE("stretching x direction to preserve aspect\n");
 359                         d_width *= 2;
 360                 } else VERBOSE("unable to preserve aspect, screen width "
 361                                         "too small\n");
 362         }
 363
 364         if (d_width == width) stretchx = 1;
 365         else if (d_width == 2*width) stretchx = 2;
 366 #if 0 /* do minimal stretching for now */
 367         else if (d_width == 4*width) stretchx = 4;
 368         else WARNING("d_width must be {1,2,4}*width, using defaults\n");
 369
 370         if (d_height == height) stretchy = 1;
 371         else if (d_height == 2*height) stretchy = 2;
 372         else if (d_height == 4*height) stretchy = 4;
 373         else WARNING("d_height must be {1,2,4}*height, using defaults\n");
 374 #endif
 375
 376         if (stretchx*width > (uint32_t)p->vc.maxwidth) {
 377                 ERROR("movie to be played is too wide, width=%d>maxwidth=%d\n",
 378                                 width*stretchx, p->vc.maxwidth);
 379                 err = 1;
 380         }
 381
 382         if (stretchy*height > (uint32_t)p->vc.maxheight) {
 383                 ERROR("movie to be played is too heigh, height=%d>maxheight"
 384                                 "=%d\n", height*stretchy, p->vc.maxheight);
 385                 err = 1;
 386         }
 387
 388         if (err == 1) return 1;
 389
 390         /* some video files (eg. concatenated MPEG files), make MPlayer
 391          * call config() during playback while no parameters have changed.
 392          * We make configuration changes to a temporary params structure,
 393          * compare it with the old params structure and only apply the new
 394          * config if it is different from the old one. */
 395         memcpy(&zptmp, &p->zp, sizeof(zptmp));
 396
 397         /* translate the configuration to zoran understandable format */
 398         zptmp.decimation = 0;
 399         zptmp.HorDcm = stretchx;
 400         zptmp.VerDcm = stretchy;
 401         zptmp.TmpDcm = 1;
 402         zptmp.field_per_buff = fields;
 403         zptmp.odd_even = top_first;
 404
 405         /* center the image on screen */
 406         zptmp.img_x = (p->vc.maxwidth - width*stretchx)/2;
 407         zptmp.img_y = (p->vc.maxheight - height*stretchy*(3-fields))/4;
 408
 409         zptmp.img_width = stretchx*width;
 410         zptmp.img_height = stretchy*height/fields;
 411
 412         VERBOSE("tv: %dx%d, out: %dx%d+%d+%d, in: %ux%u %s%s%s\n",
 413                         p->vc.maxwidth, p->vc.maxheight,
 414                         zptmp.img_width, 2*zptmp.img_height,
 415                         zptmp.img_x, 2*zptmp.img_y,
 416                         width, height, (fields == 1) ? "non-interlaced" : "",
 417                         (fields == 2 && top_first == 1)
 418                         ?  "interlaced top first" : "",
 419                         (fields == 2 && top_first == 0)
 420                         ? "interlaced bottom first" : "");
 421
 422         if (memcmp(&zptmp, &p->zp, sizeof(zptmp))) {
 423                 /* config differs, we must update */
 424                 memcpy(&p->zp, &zptmp, sizeof(zptmp));
 425                 stop_playing(p);
 426                 if (ioctl(p->vdes, MJPIOC_S_PARAMS, &p->zp) < 0) {
 427                         ERROR("error writing display params to card\n");
 428                         return 1;
 429                 }
 430                 VERBOSE("successfully written display parameters to card\n");
 431         } else VERBOSE("config didn't change, no need to write it to card\n");
 432
 433         return 0;
 434 }
 435
 436 static int control(uint32_t request, void *data) {
 437         switch (request) {
 438                 case VOCTRL_QUERY_FORMAT:
 439                         return query_format(*((uint32_t*)data));
 440                 case VOCTRL_DRAW_IMAGE:
 441                         return draw_image(data);
 442         }
 443         return VO_NOTIMPL;
 444 }
 445
 446 static int draw_frame(uint8_t *src[]) {
 447         return 0;
 448 }
 449
 450 static int draw_slice(uint8_t *image[], int stride[],
 451                 int w, int h, int x, int y) {
 452         return 0;
 453 }
 454
 455 static void draw_osd(void) {
 456 }
 457
 458 static void flip_page(void) {
 459         vo_zr2_priv_t *p = &priv;
 460         /* queueing the buffer for playback */
 461         /* queueing the first buffer automatically starts playback */
 462         if (p->playing == 0) p->playing = 1;
 463         if (ioctl(p->vdes, MJPIOC_QBUF_PLAY, &p->frame) < 0)
 464                 ERROR("error queueing buffer for playback\n");
 465         else p->queue++;
 466 }
 467
 468 static void check_events(void) {
 469 }
 470
 471 static void uninit(void) {
 472         vo_zr2_priv_t *p = &priv;
 473         VERBOSE("uninit() called (may be called from preinit() on error)\n");
 474
 475         stop_playing(p);
 476
 477         if (p->buf && munmap(p->buf, p->zrq.size*p->zrq.count))
 478                 ERROR("error munmapping buffer: %s\n", strerror(errno));
 479
 480         if (p->vdes >= 0) close(p->vdes);
 481         free(p->subdevice);
 482 }