cros_gralloc/cros_gralloc_helpers.cc

   1 /*
   2  * Copyright 2016 The Chromium OS Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  */
   6
   7 #include "cros_gralloc_helpers.h"
   8
   9 #include <sync/sync.h>
  10
  11 uint32_t cros_gralloc_convert_format(int format)
  12 {
  13         /*
  14          * Conversion from HAL to fourcc-based DRV formats based on
  15          * platform_android.c in mesa.
  16          */
  17
  18         switch (format) {
  19         case HAL_PIXEL_FORMAT_BGRA_8888:
  20                 return DRM_FORMAT_ARGB8888;
  21         case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED:
  22                 return DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED;
  23         case HAL_PIXEL_FORMAT_RGB_565:
  24                 return DRM_FORMAT_RGB565;
  25         case HAL_PIXEL_FORMAT_RGB_888:
  26                 return DRM_FORMAT_BGR888;
  27         case HAL_PIXEL_FORMAT_RGBA_8888:
  28                 return DRM_FORMAT_ABGR8888;
  29         case HAL_PIXEL_FORMAT_RGBX_8888:
  30                 return DRM_FORMAT_XBGR8888;
  31         case HAL_PIXEL_FORMAT_YCbCr_420_888:
  32                 return DRM_FORMAT_FLEX_YCbCr_420_888;
  33         case HAL_PIXEL_FORMAT_YV12:
  34                 return DRM_FORMAT_YVU420_ANDROID;
  35         /*
  36          * Choose DRM_FORMAT_R8 because <system/graphics.h> requires the buffers
  37          * with a format HAL_PIXEL_FORMAT_BLOB have a height of 1, and width
  38          * equal to their size in bytes.
  39          */
  40         case HAL_PIXEL_FORMAT_BLOB:
  41                 return DRM_FORMAT_R8;
  42         }
  43
  44         return DRM_FORMAT_NONE;
  45 }
  46
  47 cros_gralloc_handle_t cros_gralloc_convert_handle(buffer_handle_t handle)
  48 {
  49         auto hnd = reinterpret_cast<cros_gralloc_handle_t>(handle);
  50         if (!hnd || hnd->magic != cros_gralloc_magic)
  51                 return nullptr;
  52
  53         return hnd;
  54 }
  55
  56 int32_t cros_gralloc_sync_wait(int32_t acquire_fence)
  57 {
  58         if (acquire_fence < 0)
  59                 return 0;
  60
  61         /*
  62          * Wait initially for 1000 ms, and then wait indefinitely. The SYNC_IOC_WAIT
  63          * documentation states the caller waits indefinitely on the fence if timeout < 0.
  64          */
  65         int err = sync_wait(acquire_fence, 1000);
  66         if (err < 0) {
  67                 drv_log("Timed out on sync wait, err = %s\n", strerror(errno));
  68                 err = sync_wait(acquire_fence, -1);
  69                 if (err < 0) {
  70                         drv_log("sync wait error = %s\n", strerror(errno));
  71                         return -errno;
  72                 }
  73         }
  74
  75         err = close(acquire_fence);
  76         if (err) {
  77                 drv_log("Unable to close fence fd, err = %s\n", strerror(errno));
  78                 return -errno;
  79         }
  80
  81         return 0;
  82 }