1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2006 Sam Lantinga 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 19 Sam Lantinga 20 slouken (at) libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 /* This is the Playstation 2 implementation of YUV video overlays */ 25 26 #include <fcntl.h> 27 #include <unistd.h> 28 #include <sys/ioctl.h> 29 #include <sys/mman.h> 30 #include <asm/page.h> /* For definition of PAGE_SIZE */ 31 32 #include "SDL_video.h" 33 #include "SDL_gsyuv_c.h" 34 #include "../SDL_yuvfuncs.h" 35 36 /* The maximum number of 16x16 pixel block converted at once */ 37 #define MAX_MACROBLOCKS 1024 /* 2^10 macroblocks at once */ 38 39 /* The functions used to manipulate video overlays */ 40 static struct private_yuvhwfuncs gs_yuvfuncs = { 41 GS_LockYUVOverlay, 42 GS_UnlockYUVOverlay, 43 GS_DisplayYUVOverlay, 44 GS_FreeYUVOverlay 45 }; 46 47 struct private_yuvhwdata { 48 int ipu_fd; 49 Uint8 *pixels; 50 int macroblocks; 51 int dma_len; 52 caddr_t dma_mem; 53 caddr_t ipu_imem; 54 caddr_t ipu_omem; 55 caddr_t dma_tags; 56 unsigned long long *stretch_x1y1; 57 unsigned long long *stretch_x2y2; 58 struct ps2_plist plist; 59 60 /* These are just so we don't have to allocate them separately */ 61 Uint16 pitches[3]; 62 Uint8 *planes[3]; 63 }; 64 65 static int power_of_2(int value) 66 { 67 int shift; 68 69 for ( shift = 0; (1<<shift) < value; ++shift ) { 70 /* Keep looking */ ; 71 } 72 return(shift); 73 } 74 75 SDL_Overlay *GS_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display) 76 { 77 SDL_Overlay *overlay; 78 struct private_yuvhwdata *hwdata; 79 int map_offset; 80 unsigned long long *tags; 81 caddr_t base; 82 int bpp; 83 int fbp, fbw, psm; 84 int x, y, w, h; 85 int pnum; 86 struct ps2_packet *packet; 87 struct ps2_packet tex_packet; 88 89 /* We can only decode blocks of 16x16 pixels */ 90 if ( (width & 15) || (height & 15) ) { 91 SDL_SetError("Overlay width/height must be multiples of 16"); 92 return(NULL); 93 } 94 /* Make sure the image isn't too large for a single DMA transfer */ 95 if ( ((width/16) * (height/16)) > MAX_MACROBLOCKS ) { 96 SDL_SetError("Overlay too large (maximum size: %d pixels)", 97 MAX_MACROBLOCKS * 16 * 16); 98 return(NULL); 99 } 100 101 /* Double-check the requested format. For simplicity, we'll only 102 support planar YUV formats. 103 */ 104 switch (format) { 105 case SDL_YV12_OVERLAY: 106 case SDL_IYUV_OVERLAY: 107 /* Supported planar YUV format */ 108 break; 109 default: 110 SDL_SetError("Unsupported YUV format"); 111 return(NULL); 112 } 113 114 /* Create the overlay structure */ 115 overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay); 116 if ( overlay == NULL ) { 117 SDL_OutOfMemory(); 118 return(NULL); 119 } 120 SDL_memset(overlay, 0, (sizeof *overlay)); 121 122 /* Fill in the basic members */ 123 overlay->format = format; 124 overlay->w = width; 125 overlay->h = height; 126 127 /* Set up the YUV surface function structure */ 128 overlay->hwfuncs = &gs_yuvfuncs; 129 overlay->hw_overlay = 1; 130 131 /* Create the pixel data */ 132 hwdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *hwdata); 133 overlay->hwdata = hwdata; 134 if ( hwdata == NULL ) { 135 SDL_FreeYUVOverlay(overlay); 136 SDL_OutOfMemory(); 137 return(NULL); 138 } 139 hwdata->ipu_fd = -1; 140 hwdata->pixels = (Uint8 *)SDL_malloc(width*height*2); 141 if ( hwdata->pixels == NULL ) { 142 SDL_FreeYUVOverlay(overlay); 143 SDL_OutOfMemory(); 144 return(NULL); 145 } 146 hwdata->macroblocks = (width/16) * (height/16); 147 148 /* Find the pitch and offset values for the overlay */ 149 overlay->pitches = hwdata->pitches; 150 overlay->pixels = hwdata->planes; 151 switch (format) { 152 case SDL_YV12_OVERLAY: 153 case SDL_IYUV_OVERLAY: 154 overlay->pitches[0] = overlay->w; 155 overlay->pitches[1] = overlay->pitches[0] / 2; 156 overlay->pitches[2] = overlay->pitches[0] / 2; 157 overlay->pixels[0] = hwdata->pixels; 158 overlay->pixels[1] = overlay->pixels[0] + 159 overlay->pitches[0] * overlay->h; 160 overlay->pixels[2] = overlay->pixels[1] + 161 overlay->pitches[1] * overlay->h / 2; 162 overlay->planes = 3; 163 break; 164 default: 165 /* We should never get here (caught above) */ 166 break; 167 } 168 169 /* Theoretically we could support several concurrent decode 170 streams queueing up on the same file descriptor, but for 171 simplicity we'll support only one. Opening the IPU more 172 than once will fail with EBUSY. 173 */ 174 hwdata->ipu_fd = open("/dev/ps2ipu", O_RDWR); 175 if ( hwdata->ipu_fd < 0 ) { 176 SDL_FreeYUVOverlay(overlay); 177 SDL_SetError("Playstation 2 IPU busy"); 178 return(NULL); 179 } 180 181 /* Allocate a DMA area for pixel conversion */ 182 bpp = this->screen->format->BytesPerPixel; 183 map_offset = (mapped_len + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); 184 hwdata->dma_len = hwdata->macroblocks * (16 * 16 + 8 * 8 + 8 * 8) + 185 width * height * bpp + 186 hwdata->macroblocks * (16 * sizeof(long long)) + 187 12 * sizeof(long long); 188 hwdata->dma_mem = mmap(0, hwdata->dma_len, PROT_READ|PROT_WRITE, 189 MAP_SHARED, memory_fd, map_offset); 190 if ( hwdata->dma_mem == MAP_FAILED ) { 191 hwdata->ipu_imem = (caddr_t)0; 192 SDL_FreeYUVOverlay(overlay); 193 SDL_SetError("Unable to map %d bytes for DMA", hwdata->dma_len); 194 return(NULL); 195 } 196 hwdata->ipu_imem = hwdata->dma_mem; 197 hwdata->ipu_omem = hwdata->ipu_imem + 198 hwdata->macroblocks * (16 * 16 + 8 * 8 + 8 * 8); 199 hwdata->dma_tags = hwdata->ipu_omem + width * height * bpp; 200 201 /* Allocate memory for the DMA packets */ 202 hwdata->plist.num = hwdata->macroblocks * 4 + 1; 203 hwdata->plist.packet = (struct ps2_packet *)SDL_malloc( 204 hwdata->plist.num*sizeof(struct ps2_packet)); 205 if ( ! hwdata->plist.packet ) { 206 SDL_FreeYUVOverlay(overlay); 207 SDL_OutOfMemory(); 208 return(NULL); 209 } 210 pnum = 0; 211 packet = hwdata->plist.packet; 212 213 /* Set up the tags to send the image to the screen */ 214 tags = (unsigned long long *)hwdata->dma_tags; 215 base = hwdata->ipu_omem; 216 fbp = screen_image.fbp; 217 fbw = screen_image.fbw; 218 psm = screen_image.psm; 219 y = screen_image.y + screen_image.h; /* Offscreen video memory */ 220 for ( h=height/16; h; --h ) { 221 x = 0; /* Visible video memory */ 222 for ( w=width/16; w; --w ) { 223 /* The head tag */ 224 packet[pnum].ptr = &tags[0]; 225 packet[pnum].len = 10 * sizeof(*tags); 226 ++pnum; 227 tags[0] = 4 | (1LL << 60); /* GIFtag */ 228 tags[1] = 0x0e; /* A+D */ 229 tags[2] = ((unsigned long long)fbp << 32) | 230 ((unsigned long long)fbw << 48) | 231 ((unsigned long long)psm << 56); 232 tags[3] = PS2_GS_BITBLTBUF; 233 tags[4] = ((unsigned long long)x << 32) | 234 ((unsigned long long)y << 48); 235 tags[5] = PS2_GS_TRXPOS; 236 tags[6] = (unsigned long long)16 | 237 ((unsigned long long)16 << 32); 238 tags[7] = PS2_GS_TRXREG; 239 tags[8] = 0; 240 tags[9] = PS2_GS_TRXDIR; 241 /* Now the actual image data */ 242 packet[pnum].ptr = &tags[10]; 243 packet[pnum].len = 2 * sizeof(*tags); 244 ++pnum; 245 tags[10] = ((16*16*bpp) >> 4) | (2LL << 58); 246 tags[11] = 0; 247 packet[pnum].ptr = (void *)base; 248 packet[pnum].len = 16 * 16 * bpp; 249 ++pnum; 250 packet[pnum].ptr = &tags[12]; 251 packet[pnum].len = 2 * sizeof(*tags); 252 ++pnum; 253 tags[12] = (0 >> 4) | (1 << 15) | (2LL << 58); 254 tags[13] = 0; 255 256 tags += 16; 257 base += 16 * 16 * bpp; 258 259 x += 16; 260 } 261 y += 16; 262 } 263 264 /* Set up the texture memory area for the video */ 265 tex_packet.ptr = tags; 266 tex_packet.len = 8 * sizeof(*tags); 267 tags[0] = 3 | (1LL << 60); /* GIFtag */ 268 tags[1] = 0x0e; /* A+D */ 269 tags[2] = ((screen_image.y + screen_image.h) * screen_image.w) / 64 + 270 ((unsigned long long)fbw << 14) + 271 ((unsigned long long)psm << 20) + 272 ((unsigned long long)power_of_2(width) << 26) + 273 ((unsigned long long)power_of_2(height) << 30) + 274 ((unsigned long long)1 << 34) + 275 ((unsigned long long)1 << 35); 276 tags[3] = PS2_GS_TEX0_1; 277 tags[4] = (1 << 5) + (1 << 6); 278 tags[5] = PS2_GS_TEX1_1; 279 tags[6] = 0; 280 tags[7] = PS2_GS_TEXFLUSH; 281 ioctl(console_fd, PS2IOC_SEND, &tex_packet); 282 283 /* Set up the tags for scaling the image */ 284 packet[pnum].ptr = tags; 285 packet[pnum].len = 12 * sizeof(*tags); 286 ++pnum; 287 tags[0] = 5 | (1LL << 60); /* GIFtag */ 288 tags[1] = 0x0e; /* A+D */ 289 tags[2] = 6 + (1 << 4) + (1 << 8); 290 tags[3] = PS2_GS_PRIM; 291 tags[4] = ((unsigned long long)0 * 16) + 292 (((unsigned long long)0 * 16) << 16); 293 tags[5] = PS2_GS_UV; 294 tags[6] = 0; /* X1, Y1 */ 295 tags[7] = PS2_GS_XYZ2; 296 hwdata->stretch_x1y1 = &tags[6]; 297 tags[8] = ((unsigned long long)overlay->w * 16) + 298 (((unsigned long long)overlay->h * 16) << 16); 299 tags[9] = PS2_GS_UV; 300 tags[10] = 0; /* X2, Y2 */ 301 tags[11] = PS2_GS_XYZ2; 302 hwdata->stretch_x2y2 = &tags[10]; 303 304 /* We're all done.. */ 305 return(overlay); 306 } 307 308 int GS_LockYUVOverlay(_THIS, SDL_Overlay *overlay) 309 { 310 return(0); 311 } 312 313 void GS_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay) 314 { 315 return; 316 } 317 318 int GS_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst) 319 { 320 struct private_yuvhwdata *hwdata; 321 __u32 cmd; 322 struct ps2_packet packet; 323 int h, w, i; 324 Uint32 *lum, *Cr, *Cb; 325 int lum_pitch; 326 int crb_pitch; 327 Uint32 *lum_src, *Cr_src, *Cb_src; 328 Uint32 *srcp, *dstp; 329 unsigned int x, y; 330 SDL_Surface *screen; 331 332 /* Find out where the various portions of the image are */ 333 hwdata = overlay->hwdata; 334 switch (overlay->format) { 335 case SDL_YV12_OVERLAY: 336 lum = (Uint32 *)overlay->pixels[0]; 337 Cr = (Uint32 *)overlay->pixels[1]; 338 Cb = (Uint32 *)overlay->pixels[2]; 339 break; 340 case SDL_IYUV_OVERLAY: 341 lum = (Uint32 *)overlay->pixels[0]; 342 Cr = (Uint32 *)overlay->pixels[2]; 343 Cb = (Uint32 *)overlay->pixels[1]; 344 default: 345 SDL_SetError("Unsupported YUV format in blit (?)"); 346 return(-1); 347 } 348 dstp = (Uint32 *)hwdata->ipu_imem; 349 lum_pitch = overlay->w/4; 350 crb_pitch = (overlay->w/2)/4; 351 352 /* Copy blocks of 16x16 pixels to the DMA area */ 353 for ( h=overlay->h/16; h; --h ) { 354 lum_src = lum; 355 Cr_src = Cr; 356 Cb_src = Cb; 357 for ( w=overlay->w/16; w; --w ) { 358 srcp = lum_src; 359 for ( i=0; i<16; ++i ) { 360 dstp[0] = srcp[0]; 361 dstp[1] = srcp[1]; 362 dstp[2] = srcp[2]; 363 dstp[3] = srcp[3]; 364 srcp += lum_pitch; 365 dstp += 4; 366 } 367 srcp = Cb_src; 368 for ( i=0; i<8; ++i ) { 369 dstp[0] = srcp[0]; 370 dstp[1] = srcp[1]; 371 srcp += crb_pitch; 372 dstp += 2; 373 } 374 srcp = Cr_src; 375 for ( i=0; i<8; ++i ) { 376 dstp[0] = srcp[0]; 377 dstp[1] = srcp[1]; 378 srcp += crb_pitch; 379 dstp += 2; 380 } 381 lum_src += 16 / 4; 382 Cb_src += 8 / 4; 383 Cr_src += 8 / 4; 384 } 385 lum += lum_pitch * 16; 386 Cr += crb_pitch * 8; 387 Cb += crb_pitch * 8; 388 } 389 390 /* Send the macroblock data to the IPU */ 391 #ifdef DEBUG_YUV 392 fprintf(stderr, "Sending data to IPU..\n"); 393 #endif 394 packet.ptr = hwdata->ipu_imem; 395 packet.len = hwdata->macroblocks * (16 * 16 + 8 * 8 + 8 * 8); 396 ioctl(hwdata->ipu_fd, PS2IOC_SENDA, &packet); 397 398 /* Trigger the DMA to the IPU for conversion */ 399 #ifdef DEBUG_YUV 400 fprintf(stderr, "Trigging conversion command\n"); 401 #endif 402 cmd = (7 << 28) + hwdata->macroblocks; 403 if ( screen_image.psm == PS2_GS_PSMCT16 ) { 404 cmd += (1 << 27) + /* Output RGB 555 */ 405 (1 << 26); /* Dither output */ 406 } 407 ioctl(hwdata->ipu_fd, PS2IOC_SIPUCMD, &cmd); 408 409 /* Retrieve the converted image from the IPU */ 410 #ifdef DEBUG_YUV 411 fprintf(stderr, "Retrieving data from IPU..\n"); 412 #endif 413 packet.ptr = hwdata->ipu_omem; 414 packet.len = overlay->w * overlay->h * 415 this->screen->format->BytesPerPixel; 416 ioctl(hwdata->ipu_fd, PS2IOC_RECV, &packet); 417 418 #ifdef DEBUG_YUV 419 fprintf(stderr, "Copying image to screen..\n"); 420 #endif 421 /* Wait for previous DMA to complete */ 422 ioctl(console_fd, PS2IOC_SENDQCT, 1); 423 424 /* Send the current image to the screen and scale it */ 425 screen = this->screen; 426 x = (unsigned int)dst->x; 427 y = (unsigned int)dst->y; 428 if ( screen->offset ) { 429 x += (screen->offset % screen->pitch) / 430 screen->format->BytesPerPixel; 431 y += (screen->offset / screen->pitch); 432 } 433 y += screen_image.y; 434 *hwdata->stretch_x1y1 = (x * 16) + ((y * 16) << 16); 435 x += (unsigned int)dst->w; 436 y += (unsigned int)dst->h; 437 *hwdata->stretch_x2y2 = (x * 16) + ((y * 16) << 16); 438 return ioctl(console_fd, PS2IOC_SENDL, &hwdata->plist); 439 } 440 441 void GS_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) 442 { 443 struct private_yuvhwdata *hwdata; 444 445 hwdata = overlay->hwdata; 446 if ( hwdata ) { 447 if ( hwdata->ipu_fd >= 0 ) { 448 close(hwdata->ipu_fd); 449 } 450 if ( hwdata->dma_mem ) { 451 munmap(hwdata->dma_mem, hwdata->dma_len); 452 } 453 if ( hwdata->plist.packet ) { 454 SDL_free(hwdata->plist.packet); 455 } 456 if ( hwdata->pixels ) { 457 SDL_free(hwdata->pixels); 458 } 459 SDL_free(hwdata); 460 } 461 } 462
