gralloc/gralloc.cpp

   1 /*
   2  * Copyright (C) 2008 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifdef HAVE_ANDROID_OS      // just want PAGE_SIZE define
  18 # include <asm/page.h>
  19 #else
  20 # include <sys/user.h>
  21 #endif
  22 #include <limits.h>
  23 #include <unistd.h>
  24 #include <fcntl.h>
  25 #include <errno.h>
  26 #include <pthread.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #include <sys/mman.h>
  31 #include <sys/stat.h>
  32 #include <sys/types.h>
  33 #include <sys/ioctl.h>
  34
  35 #include <ion/ion.h>
  36 #include <linux/ion.h>
  37 #include <cutils/log.h>
  38 #include <cutils/atomic.h>
  39
  40 #include <hardware/hardware.h>
  41 #include <hardware/gralloc.h>
  42
  43 #include "gralloc_priv.h"
  44 #include "exynos_format.h"
  45 #include "gr.h"
  46
  47 #define ION_HEAP_EXYNOS_CONTIG_MASK     (1 << 4)
  48 #define ION_EXYNOS_FIMD_VIDEO_MASK  (1 << 28)
  49 #define ION_EXYNOS_MFC_OUTPUT_MASK  (1 << 26)
  50 #define ION_EXYNOS_MFC_INPUT_MASK   (1 << 25)
  51
  52
  53 /*****************************************************************************/
  54
  55 struct gralloc_context_t {
  56     alloc_device_t  device;
  57     /* our private data here */
  58 };
  59
  60 static int gralloc_alloc_buffer(alloc_device_t* dev,
  61                                 size_t size, int usage, buffer_handle_t* pHandle);
  62
  63 /*****************************************************************************/
  64
  65 int fb_device_open(const hw_module_t* module, const char* name,
  66                    hw_device_t** device);
  67
  68 static int gralloc_device_open(const hw_module_t* module, const char* name,
  69                                hw_device_t** device);
  70
  71 extern int gralloc_lock(gralloc_module_t const* module,
  72                         buffer_handle_t handle, int usage,
  73                         int l, int t, int w, int h,
  74                         void** vaddr);
  75
  76 extern int gralloc_unlock(gralloc_module_t const* module,
  77                           buffer_handle_t handle);
  78
  79 extern int gralloc_register_buffer(gralloc_module_t const* module,
  80                                    buffer_handle_t handle);
  81
  82 extern int gralloc_unregister_buffer(gralloc_module_t const* module,
  83                                      buffer_handle_t handle);
  84
  85 /*****************************************************************************/
  86
  87 static struct hw_module_methods_t gralloc_module_methods = {
  88 open: gralloc_device_open
  89 };
  90
  91 struct private_module_t HAL_MODULE_INFO_SYM = {
  92 base: {
  93     common: {
  94         tag: HARDWARE_MODULE_TAG,
  95         version_major: 1,
  96         version_minor: 0,
  97         id: GRALLOC_HARDWARE_MODULE_ID,
  98         name: "Graphics Memory Allocator Module",
  99         author: "The Android Open Source Project",
 100         methods: &gralloc_module_methods
 101     },
 102     registerBuffer: gralloc_register_buffer,
 103     unregisterBuffer: gralloc_unregister_buffer,
 104     lock: gralloc_lock,
 105     unlock: gralloc_unlock,
 106 },
 107 framebuffer: 0,
 108 flags: 0,
 109 numBuffers: 0,
 110 bufferMask: 0,
 111 lock: PTHREAD_MUTEX_INITIALIZER,
 112 currentBuffer: 0,
 113 ionfd: -1,
 114 };
 115
 116 /*****************************************************************************/
 117
 118 static unsigned int _select_heap(int usage)
 119 {
 120     unsigned int heap_mask;
 121
 122     if (usage & GRALLOC_USAGE_PROTECTED)
 123         heap_mask = ION_HEAP_EXYNOS_CONTIG_MASK;
 124     else
 125         heap_mask = ION_HEAP_SYSTEM_MASK;
 126
 127     return heap_mask;
 128 }
 129
 130 static int gralloc_alloc_rgb(int ionfd, int w, int h, int format, int usage,
 131                              unsigned int ion_flags, private_handle_t **hnd, int *stride)
 132 {
 133     size_t size, bpr;
 134     int bpp = 0, vstride, fd, err;
 135     unsigned int heap_mask = _select_heap(usage);
 136
 137     switch (format) {
 138         case HAL_PIXEL_FORMAT_RGBA_8888:
 139         case HAL_PIXEL_FORMAT_RGBX_8888:
 140         case HAL_PIXEL_FORMAT_BGRA_8888:
 141             bpp = 4;
 142             break;
 143         case HAL_PIXEL_FORMAT_RGB_888:
 144             bpp = 3;
 145             break;
 146         case HAL_PIXEL_FORMAT_RGB_565:
 147         case HAL_PIXEL_FORMAT_RGBA_5551:
 148         case HAL_PIXEL_FORMAT_RGBA_4444:
 149         case HAL_PIXEL_FORMAT_RAW_SENSOR:
 150             bpp = 2;
 151             break;
 152         case HAL_PIXEL_FORMAT_BLOB:
 153             bpp = 1;
 154             break;
 155         default:
 156             return -EINVAL;
 157     }
 158     bpr = ALIGN(w*bpp, 16);
 159     vstride = ALIGN(h, 16);
 160     if (vstride == h)
 161         size = bpr * (vstride + 1);
 162     else
 163         size = bpr * vstride;
 164     *stride = bpr / bpp;
 165     size = ALIGN(size, PAGE_SIZE);
 166
 167     if (usage & GRALLOC_USAGE_PROTECTED)
 168         ion_flags |= ION_EXYNOS_FIMD_VIDEO_MASK;
 169
 170     err = ion_alloc_fd(ionfd, size, 0, heap_mask, ion_flags,
 171                        &fd);
 172     *hnd = new private_handle_t(fd, size, usage, w, h, format, *stride,
 173                                 vstride);
 174
 175     return err;
 176 }
 177
 178 static int gralloc_alloc_framework_yuv(int ionfd, int w, int h, int format,
 179                                        int usage, unsigned int ion_flags,
 180                                        private_handle_t **hnd, int *stride)
 181 {
 182     size_t size;
 183     int err, fd;
 184
 185     switch (format) {
 186         case HAL_PIXEL_FORMAT_YV12:
 187             *stride = ALIGN(w, 16);
 188             break;
 189         case HAL_PIXEL_FORMAT_YCrCb_420_SP:
 190             *stride = w;
 191             break;
 192         default:
 193             ALOGE("invalid yuv format %d\n", format);
 194             return -EINVAL;
 195     }
 196
 197     size = *stride * h * 3 / 2;
 198     err = ion_alloc_fd(ionfd, size, 0, 1 << ION_HEAP_TYPE_SYSTEM,
 199                        ion_flags, &fd);
 200     if (err)
 201         return err;
 202
 203     *hnd = new private_handle_t(fd, size, usage, w, h, format, *stride, h);
 204     return err;
 205 }
 206
 207 static int gralloc_alloc_yuv(int ionfd, int w, int h, int format,
 208                              int usage, unsigned int ion_flags,
 209                              private_handle_t **hnd, int *stride)
 210 {
 211     size_t luma_size, chroma_size;
 212     int err, planes, fd, fd1, fd2 = 0;
 213     size_t luma_vstride;
 214     unsigned int heap_mask = _select_heap(usage);
 215
 216     *stride = ALIGN(w, 16);
 217
 218     if (format == HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED) {
 219         ALOGV("HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED : usage(%x), flags(%x)\n", usage, ion_flags);
 220         if ((usage & GRALLOC_USAGE_HW_CAMERA_ZSL) == GRALLOC_USAGE_HW_CAMERA_ZSL) {
 221             format = HAL_PIXEL_FORMAT_YCbCr_422_I; // YUYV
 222         } else if (usage & GRALLOC_USAGE_HW_TEXTURE) {
 223             format = HAL_PIXEL_FORMAT_EXYNOS_YV12;
 224         } else if (usage & GRALLOC_USAGE_HW_VIDEO_ENCODER) {
 225             format = HAL_PIXEL_FORMAT_YCbCr_420_SP; // NV12M
 226         }
 227     }
 228     switch (format) {
 229         case HAL_PIXEL_FORMAT_EXYNOS_YV12:
 230             {
 231                 luma_vstride = ALIGN(h, 16);
 232                 luma_size = luma_vstride * *stride;
 233                 chroma_size = (luma_vstride / 2) * ALIGN(*stride / 2, 16);
 234                 planes = 3;
 235                 break;
 236             }
 237         case HAL_PIXEL_FORMAT_EXYNOS_YCrCb_420_SP:
 238         case HAL_PIXEL_FORMAT_YCbCr_420_SP:
 239         case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
 240             {
 241                 size_t chroma_vstride = ALIGN(h / 2, 32);
 242                 luma_vstride = ALIGN(h, 32);
 243                 luma_size = luma_vstride * *stride;
 244                 chroma_size = chroma_vstride * *stride;
 245                 planes = 2;
 246                 break;
 247             }
 248         case HAL_PIXEL_FORMAT_YV12:
 249         case HAL_PIXEL_FORMAT_YCrCb_420_SP:
 250             return gralloc_alloc_framework_yuv(ionfd, w, h, format, usage,
 251                                                ion_flags, hnd, stride);
 252         case HAL_PIXEL_FORMAT_YCbCr_422_I:
 253             {
 254                 luma_vstride = h;
 255                 luma_size = luma_vstride * *stride * 2;
 256                 chroma_size = 0;
 257                 planes = 1;
 258                 break;
 259             }
 260         default:
 261             ALOGE("invalid yuv format %d\n", format);
 262             return -EINVAL;
 263     }
 264
 265     if (usage & GRALLOC_USAGE_PROTECTED)
 266         ion_flags |= ION_EXYNOS_MFC_OUTPUT_MASK;
 267
 268     err = ion_alloc_fd(ionfd, luma_size, 0, heap_mask, ion_flags, &fd);
 269     if (err)
 270         return err;
 271     if (planes == 1) {
 272         *hnd = new private_handle_t(fd, luma_size, usage, w, h,
 273                                     format, *stride, luma_vstride);
 274     } else {
 275         err = ion_alloc_fd(ionfd, chroma_size, 0, heap_mask, ion_flags, &fd1);
 276         if (err)
 277             goto err1;
 278         if (planes == 3) {
 279             err = ion_alloc_fd(ionfd, chroma_size, 0, heap_mask, ion_flags, &fd2);
 280             if (err)
 281                 goto err2;
 282
 283             *hnd = new private_handle_t(fd, fd1, fd2, luma_size, usage, w, h,
 284                                         format, *stride, luma_vstride);
 285         } else {
 286             *hnd = new private_handle_t(fd, fd1, luma_size, usage, w, h, format,
 287                                         *stride, luma_vstride);
 288         }
 289     }
 290     return err;
 291
 292 err2:
 293     close(fd1);
 294 err1:
 295     close(fd);
 296     return err;
 297 }
 298
 299 static int gralloc_alloc(alloc_device_t* dev,
 300                          int w, int h, int format, int usage,
 301                          buffer_handle_t* pHandle, int* pStride)
 302 {
 303     int stride;
 304     int err;
 305     unsigned int ion_flags = 0;
 306     private_handle_t *hnd = NULL;
 307
 308     if (!pHandle || !pStride)
 309         return -EINVAL;
 310
 311     if( (usage & GRALLOC_USAGE_SW_READ_MASK) == GRALLOC_USAGE_SW_READ_OFTEN )
 312         ion_flags = ION_FLAG_CACHED;
 313
 314     private_module_t* m = reinterpret_cast<private_module_t*>
 315         (dev->common.module);
 316     gralloc_module_t* module = reinterpret_cast<gralloc_module_t*>
 317         (dev->common.module);
 318
 319     err = gralloc_alloc_rgb(m->ionfd, w, h, format, usage, ion_flags, &hnd,
 320                             &stride);
 321     if (err)
 322         err = gralloc_alloc_yuv(m->ionfd, w, h, format, usage, ion_flags,
 323                                 &hnd, &stride);
 324     if (err)
 325         return err;
 326
 327     err = grallocMap(module, hnd);
 328
 329     if (err != 0)
 330         goto err;
 331
 332     *pHandle = hnd;
 333     *pStride = stride;
 334     return 0;
 335 err:
 336     if (!hnd)
 337         return err;
 338     close(hnd->fd);
 339     if (hnd->fd1 >= 0)
 340         close(hnd->fd1);
 341     if (hnd->fd2 >= 0)
 342         close(hnd->fd2);
 343     return err;
 344 }
 345
 346 static int gralloc_free(alloc_device_t* dev,
 347                         buffer_handle_t handle)
 348 {
 349     if (private_handle_t::validate(handle) < 0)
 350         return -EINVAL;
 351
 352     private_handle_t const* hnd = reinterpret_cast<private_handle_t const*>(handle);
 353     gralloc_module_t* module = reinterpret_cast<gralloc_module_t*>(
 354                                                                    dev->common.module);
 355
 356     grallocUnmap(module, const_cast<private_handle_t*>(hnd));
 357     close(hnd->fd);
 358     if (hnd->fd1 >= 0)
 359         close(hnd->fd1);
 360     if (hnd->fd2 >= 0)
 361         close(hnd->fd2);
 362
 363     delete hnd;
 364     return 0;
 365 }
 366
 367 /*****************************************************************************/
 368
 369 static int gralloc_close(struct hw_device_t *dev)
 370 {
 371     gralloc_context_t* ctx = reinterpret_cast<gralloc_context_t*>(dev);
 372     if (ctx) {
 373         /* TODO: keep a list of all buffer_handle_t created, and free them
 374          * all here.
 375          */
 376         free(ctx);
 377     }
 378     return 0;
 379 }
 380
 381 int gralloc_device_open(const hw_module_t* module, const char* name,
 382                         hw_device_t** device)
 383 {
 384     int status = -EINVAL;
 385     if (!strcmp(name, GRALLOC_HARDWARE_GPU0)) {
 386         gralloc_context_t *dev;
 387         dev = (gralloc_context_t*)malloc(sizeof(*dev));
 388
 389         /* initialize our state here */
 390         memset(dev, 0, sizeof(*dev));
 391
 392         /* initialize the procs */
 393         dev->device.common.tag = HARDWARE_DEVICE_TAG;
 394         dev->device.common.version = 0;
 395         dev->device.common.module = const_cast<hw_module_t*>(module);
 396         dev->device.common.close = gralloc_close;
 397
 398         dev->device.alloc = gralloc_alloc;
 399         dev->device.free = gralloc_free;
 400
 401         private_module_t *p = reinterpret_cast<private_module_t*>(dev->device.common.module);
 402         p->ionfd = ion_open();
 403
 404         *device = &dev->device.common;
 405         status = 0;
 406     } else {
 407         status = fb_device_open(module, name, device);
 408     }
 409     return status;
 410 }