summaryrefslogtreecommitdiffstats
path: root/libvo/vo_s3fb.c
blob: a0d54e0ca9a7498c9ba5c182e951ce5ce8504d25 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
/*
 * copyright (C) 2006 Mark Sanderson <mmp@kiora.ath.cx>
 *
 * 30-Mar-2006 Modified from tdfxfb.c by Mark Zealey
 *
 * This file is part of MPlayer.
 *
 * MPlayer is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * MPlayer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/* Hints and tricks:
 * - Use -dr to get direct rendering
 * - Use -vf yuy2 to get yuy2 rendering, *MUCH* faster than yv12
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <linux/fb.h>
#include <sys/io.h>

#include "config.h"
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include "mp_msg.h"
#include "fastmemcpy.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "aspect.h"
#include "sub/sub.h"

static const vo_info_t info =
  {
    "S3 Virge over fbdev",
    "s3fb",
    "Mark Sanderson <mmp@kiora.ath.cx>",
    ""
  };

const LIBVO_EXTERN(s3fb)

typedef struct vga_type {
  int cr38, cr39, cr53;
  unsigned char *mmio;
} vga_t;

static vga_t *v = NULL;
static int fd = -1;
static struct fb_fix_screeninfo fb_finfo;
static struct fb_var_screeninfo fb_vinfo;
static uint32_t in_width, in_height, in_format, in_depth, in_s3_format,
  screenwidth, screenheight, screendepth, screenstride,
  vidwidth, vidheight, vidx, vidy, page, offset, sreg;
static char *inpage, *inpage0, *smem = NULL;
static void (*alpha_func)();

static void clear_screen(void);

/* streams registers */
#define PSTREAM_CONTROL_REG 0x8180
#define COL_CHROMA_KEY_CONTROL_REG 0x8184
#define SSTREAM_CONTROL_REG 0x8190
#define CHROMA_KEY_UPPER_BOUND_REG 0x8194
#define SSTREAM_STRETCH_REG 0x8198
#define BLEND_CONTROL_REG 0x81A0
#define PSTREAM_FBADDR0_REG 0x81C0
#define PSTREAM_FBADDR1_REG 0x81C4
#define PSTREAM_STRIDE_REG 0x81C8
#define DOUBLE_BUFFER_REG 0x81CC
#define SSTREAM_FBADDR0_REG 0x81D0
#define SSTREAM_FBADDR1_REG 0x81D4
#define SSTREAM_STRIDE_REG 0x81D8
#define OPAQUE_OVERLAY_CONTROL_REG 0x81DC
#define K1_VSCALE_REG 0x81E0
#define K2_VSCALE_REG 0x81E4
#define DDA_VERT_REG 0x81E8
#define STREAMS_FIFO_REG 0x81EC
#define PSTREAM_START_REG 0x81F0
#define PSTREAM_WINDOW_SIZE_REG 0x81F4
#define SSTREAM_START_REG 0x81F8
#define SSTREAM_WINDOW_SIZE_REG 0x81FC

#define S3_MEMBASE      sreg
#define S3_NEWMMIO_REGBASE      0x1000000  /* 16MB */
#define S3_NEWMMIO_REGSIZE        0x10000  /* 64KB */
#define S3V_MMIO_REGSIZE           0x8000  /* 32KB */
#define S3_NEWMMIO_VGABASE      (S3_NEWMMIO_REGBASE + 0x8000)

#define OUTREG(mmreg, value) *(unsigned int *)(&v->mmio[mmreg]) = value

int readcrtc(int reg) {
  outb(reg, 0x3d4);
  return inb(0x3d5);
}

void writecrtc(int reg, int value) {
  outb(reg, 0x3d4);
  outb(value, 0x3d5);
}

// enable S3 registers
int enable(void) {
  int fd;

  if (v)
    return 1;
  errno = 0;
  v = malloc(sizeof(vga_t));
  if (v) {
    if (ioperm(0x3d4, 2, 1) == 0) {
      fd = open("/dev/mem", O_RDWR);
      if (fd != -1) {
        v->mmio = mmap(0, S3_NEWMMIO_REGSIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd,
                 S3_MEMBASE + S3_NEWMMIO_REGBASE);
        close(fd);
        if (v->mmio != MAP_FAILED) {
          v->cr38 = readcrtc(0x38);
          v->cr39 = readcrtc(0x39);
          v->cr53 = readcrtc(0x53);
          writecrtc(0x38, 0x48);
          writecrtc(0x39, 0xa5);
          writecrtc(0x53, 0x08);
          return 1;
	}
      }
      iopl(0);
    }
    free(v);
    v = NULL;
  }
  return 0;
}

void disable(void) {
  if (v) {
    writecrtc(0x53, v->cr53);
    writecrtc(0x39, v->cr39);
    writecrtc(0x38, v->cr38);
    ioperm(0x3d4, 2, 0);
    munmap(v->mmio, S3_NEWMMIO_REGSIZE);
    free(v);
    v = NULL;
  }
}

int yuv_on(int format, int src_w, int src_h, int dst_x, int dst_y, int dst_w, int dst_h, int crop, int xres, int yres, int line_length, int offset) {
  int tmp, pitch, start, src_wc, src_hc, bpp;

  if (format == 0 || format == 7)
    bpp = 4;
  else if (format == 6)
    bpp = 3;
  else
    bpp = 2;

  src_wc = src_w - crop * 2;
  src_hc = src_h - crop * 2;
  pitch = src_w * bpp;

  // video card memory layout:
  // 0-n: visible screen memory, n = width * height * bytes per pixel
  // n-m: scaler source memory, n is aligned to a page boundary
  // m+: scaler source memory for multiple buffers

  // offset is the first aligned byte after the screen memory, where the scaler input buffer is
  tmp = (yres * line_length + 4095) & ~4095;
  offset += tmp;

  // start is the top left viewable scaler input pixel
  start = offset + crop * pitch + crop * bpp;

  OUTREG(COL_CHROMA_KEY_CONTROL_REG, 0x47000000);
  OUTREG(CHROMA_KEY_UPPER_BOUND_REG, 0x0);
  OUTREG(BLEND_CONTROL_REG, 0x00000020);
  OUTREG(DOUBLE_BUFFER_REG, 0x0); /* Choose fbaddr0 as stream source. */
  OUTREG(OPAQUE_OVERLAY_CONTROL_REG, 0x0);

  OUTREG(PSTREAM_CONTROL_REG, 0x06000000);
  OUTREG(PSTREAM_FBADDR0_REG, 0x0);
  OUTREG(PSTREAM_FBADDR1_REG, 0x0);
  OUTREG(PSTREAM_STRIDE_REG, line_length);
  OUTREG(PSTREAM_START_REG, 0x00010001);
  OUTREG(PSTREAM_WINDOW_SIZE_REG, 0x00010001);
  //OUTREG(SSTREAM_WINDOW_SIZE_REG, ( ((xres-1) << 16) | yres) & 0x7ff07ff);

  if (dst_w == src_w)
    tmp = 0;
  else
    tmp = 2;
  /* format 1=YCbCr-16 2=YUV-16 3=BGR15 4=YUV-16/32(mixed 2/4byte stride) 5=BGR16 6=BGR24 0,7=BGR32 */
  /* The YUV format pixel has a range of value from 0 to 255, while the YCbCr format pixel values are in the range of 16 to 240. */
  OUTREG(SSTREAM_CONTROL_REG, tmp << 28 | (format << 24) |
         ((((src_wc-1)<<1)-(dst_w-1)) & 0xfff));
  OUTREG(SSTREAM_STRETCH_REG,
         ((src_wc - 1) & 0x7ff) | (((src_wc - dst_w-1) & 0x7ff) << 16));
  OUTREG(SSTREAM_FBADDR0_REG, start & 0x3fffff );
  OUTREG(SSTREAM_STRIDE_REG, pitch & 0xfff );
  OUTREG(SSTREAM_START_REG, ((dst_x + 1) << 16) | (dst_y + 1));
  OUTREG(SSTREAM_WINDOW_SIZE_REG, ( ((dst_w-1) << 16) | (dst_h ) ) & 0x7ff07ff);
  OUTREG(K1_VSCALE_REG, src_hc - 1 );
  OUTREG(K2_VSCALE_REG, (src_hc - dst_h) & 0x7ff );
  /* 0xc000 = bw & vert interp */
  /* 0x8000 = no bw save */
  OUTREG(DDA_VERT_REG, (((~dst_h)-1) & 0xfff ) | 0xc000);
  writecrtc(0x92, (((pitch + 7) / 8) >> 8) | 0x80);
  writecrtc(0x93, (pitch + 7) / 8);

  writecrtc(0x67, readcrtc(0x67) | 0x4);

  return offset;
}

void yuv_off(void) {
  writecrtc(0x67, readcrtc(0x67) & ~0xc);
  memset(v->mmio + 0x8180, 0, 0x80);
  OUTREG(0x81b8, 0x900);
  OUTREG(0x81bc, 0x900);
  OUTREG(0x81c8, 0x900);
  OUTREG(0x81cc, 0x900);
  OUTREG(0x81d8, 0x1);
  OUTREG(0x81f8, 0x07ff07ff);
  OUTREG(0x81fc, 0x00010001);
  writecrtc(0x92, 0);
  writecrtc(0x93, 0);
}

static int preinit(const char *arg)
{
  char *name;

  if(arg)
    name = (char*)arg;
  else if(!(name = getenv("FRAMEBUFFER")))
    name = "/dev/fb0";

  if((fd = open(name, O_RDWR)) == -1) {
    mp_msg(MSGT_VO, MSGL_FATAL, "s3fb: can't open %s: %s\n", name, strerror(errno));
    return -1;
  }

  if(ioctl(fd, FBIOGET_FSCREENINFO, &fb_finfo)) {
    mp_msg(MSGT_VO, MSGL_FATAL, "s3fb: problem with FBITGET_FSCREENINFO ioctl: %s\n",
           strerror(errno));
    close(fd);
    fd = -1;
    return -1;
  }

  if(ioctl(fd, FBIOGET_VSCREENINFO, &fb_vinfo)) {
    mp_msg(MSGT_VO, MSGL_FATAL, "s3fb: problem with FBITGET_VSCREENINFO ioctl: %s\n",
           strerror(errno));
    close(fd);
    fd = -1;
    return -1;
  }

  // Check the depth now as config() musn't fail
  switch(fb_vinfo.bits_per_pixel) {
  case 16:
  case 24:
  case 32:
    break; // Ok
  default:
    mp_msg(MSGT_VO, MSGL_FATAL, "s3fb: %d bpp output is not supported\n", fb_vinfo.bits_per_pixel);
    close(fd);
    fd = -1;
    return -1;
  }

  /* Open up a window to the hardware */
  smem = mmap(0, fb_finfo.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
  sreg = fb_finfo.smem_start;

  if(smem == (void *)-1) {
    mp_msg(MSGT_VO, MSGL_FATAL, "s3fb: Couldn't map memory areas: %s\n", strerror(errno));
    smem = NULL;
    close(fd);
    fd = -1;
    return -1;
  }

  if (!enable()) {
    mp_msg(MSGT_VO, MSGL_FATAL, "s3fb: Couldn't map S3 registers: %s\n", strerror(errno));
    close(fd);
    fd = -1;
    return -1;
  }

  return 0; // Success
}

/* And close our mess */
static void uninit(void)
{
  if (inpage0) {
    clear_screen();
    yuv_off();
    inpage0 = NULL;
  }

  if(smem) {
    munmap(smem, fb_finfo.smem_len);
    smem = NULL;
  }

  disable();

  if(fd != -1) {
    close(fd);
    fd = -1;
  }
}

static void clear_screen(void)
{
  if (inpage0) {
    int n;

    memset(smem, 0, screenheight * screenstride);

    if (in_format == IMGFMT_YUY2) {
      unsigned short *ptr;
      int i;

      ptr = (unsigned short *)inpage0;
      n = in_width * in_height;
      if (vo_doublebuffering)
        n *= 2;
      for(i=0; i<n; i++)
        *ptr++ = 0x8000;

    } else {
      n = in_depth * in_width * in_height;
      if (vo_doublebuffering)
        n *= 2;
      memset(inpage0, 0, n);
    }
  }
}

/* Setup output screen dimensions etc */
static void setup_screen(uint32_t full)
{
  int inpageoffset;

  aspect(&vidwidth, &vidheight, full ? A_ZOOM : A_NOZOOM);

  // center picture
  vidx = (screenwidth - vidwidth) / 2;
  vidy = (screenheight - vidheight) / 2;

  geometry(&vidx, &vidy, &vidwidth, &vidheight, screenwidth, screenheight);
  vo_fs = full;

  inpageoffset = yuv_on(in_s3_format, in_width, in_height, vidx, vidy, vidwidth, vidheight, 0, screenwidth, screenheight, screenstride, 0);
  inpage0 = smem + inpageoffset;
  inpage = inpage0;
  mp_msg(MSGT_VO, MSGL_INFO, "s3fb: output is at %dx%d +%dx%d\n", vidx, vidy, vidwidth, vidheight);

  clear_screen();
}

static int config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height,
                  uint32_t flags, char *title, uint32_t format)
{
  screenwidth = fb_vinfo.xres;
  screenheight = fb_vinfo.yres;
  screenstride = fb_finfo.line_length;
  aspect_save_screenres(fb_vinfo.xres,fb_vinfo.yres);

  in_width = width;
  in_height = height;
  in_format = format;
  aspect_save_orig(width,height);

  aspect_save_prescale(d_width,d_height);

  /* Setup the screen for rendering to */
  screendepth = fb_vinfo.bits_per_pixel / 8;

  switch(in_format) {

  case IMGFMT_YUY2:
    in_depth = 2;
    in_s3_format = 1;
    alpha_func = vo_draw_alpha_yuy2;
    break;

  case IMGFMT_BGR15:
    in_depth = 2;
    in_s3_format = 3;
    alpha_func = vo_draw_alpha_rgb16;
    break;

  case IMGFMT_BGR16:
    in_depth = 2;
    in_s3_format = 5;
    alpha_func = vo_draw_alpha_rgb16;
    break;

  case IMGFMT_BGR24:
    in_depth = 3;
    in_s3_format = 6;
    alpha_func = vo_draw_alpha_rgb24;
    break;

  case IMGFMT_BGR32:
    in_depth = 4;
    in_s3_format = 7;
    alpha_func = vo_draw_alpha_rgb32;
    break;

  default:
    mp_msg(MSGT_VO, MSGL_FATAL, "s3fb: Eik! Something's wrong with control().\n");
    return -1;
  }

  offset = in_width * in_depth * in_height;
  if (vo_doublebuffering)
    page = offset;
  else
    page = 0;

  if(screenheight * screenstride + page + offset > fb_finfo.smem_len) {
    mp_msg(MSGT_VO, MSGL_FATAL, "s3fb: Not enough video memory to play this movie. Try at a lower resolution\n");
    return -1;
  }

  setup_screen(flags & VOFLAG_FULLSCREEN);
  if (vo_doublebuffering)
    inpage = inpage0 + page;

  mp_msg(MSGT_VO, MSGL_INFO, "s3fb: screen is %dx%d at %d bpp, in is %dx%d at %d bpp, norm is %dx%d\n",
         screenwidth, screenheight, screendepth * 8,
         in_width, in_height, in_depth * 8,
         d_width, d_height);

  return 0;
}

static void draw_alpha(int x, int y, int w, int h, unsigned char *src,
                       unsigned char *srca, int stride)
{
  char *dst = inpage + (y * in_width + x) * in_depth;
  alpha_func(w, h, src, srca, stride, dst, in_width * in_depth);
}

static void draw_osd(void)
{
  if (!vo_doublebuffering)
    vo_draw_text(in_width, in_height, draw_alpha);
}

/* Render onto the screen */
static void flip_page(void)
{
  if(vo_doublebuffering) {
    vo_draw_text(in_width, in_height, draw_alpha);
    yuv_on(in_s3_format, in_width, in_height, vidx, vidy, vidwidth, vidheight, 0, screenwidth, screenheight, screenstride, page);
    page ^= offset;
    inpage = inpage0 + page;
  }
}

static int draw_frame(uint8_t *src[])
{
  mem2agpcpy(inpage, src[0], in_width * in_depth * in_height);
  return 0;
}

static int draw_slice(uint8_t *i[], int s[], int w, int h, int x, int y)
{
  return 1;
}

/* Attempt to start doing DR */
static uint32_t get_image(mp_image_t *mpi)
{

  if(mpi->flags & MP_IMGFLAG_READABLE)
    return VO_FALSE;
  if(mpi->type == MP_IMGTYPE_STATIC && vo_doublebuffering)
    return VO_FALSE;
  if(mpi->type > MP_IMGTYPE_TEMP)
    return VO_FALSE; // TODO ??

  switch(in_format) {
  case IMGFMT_BGR15:
  case IMGFMT_BGR16:
  case IMGFMT_BGR24:
  case IMGFMT_BGR32:
  case IMGFMT_YUY2:
    mpi->planes[0] = inpage;
    mpi->stride[0] = in_width * in_depth;
    break;

  default:
    return VO_FALSE;
  }

  mpi->width = in_width;
  mpi->flags |= MP_IMGFLAG_DIRECT;

  return VO_TRUE;
}

static int control(uint32_t request, void *data)
{
  switch(request) {
  case VOCTRL_GET_IMAGE:
    return get_image(data);

  case VOCTRL_QUERY_FORMAT:
    switch(*((uint32_t*)data)) {
    case IMGFMT_BGR15:
    case IMGFMT_BGR16:
    case IMGFMT_BGR24:
    case IMGFMT_BGR32:
    case IMGFMT_YUY2:
      return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW |
        VFCAP_OSD | VFCAP_HWSCALE_UP | VFCAP_HWSCALE_DOWN;
    }

    return 0;           /* Not supported */

  case VOCTRL_FULLSCREEN:
    setup_screen(!vo_fs);
    return 0;
  }

  return VO_NOTIMPL;
}

/* Dummy funcs */
static void check_events(void) {}