1/*
2 * Copyright (C) 2015 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#define LOG_TAG "hwc-platform-drm-generic"
18
19#include "drmresources.h"
20#include "platform.h"
21#include "platformdrmgeneric.h"
22
23#include <drm/drm_fourcc.h>
24#include <xf86drm.h>
25#include <xf86drmMode.h>
26
27#include <cutils/log.h>
28#include <gralloc_drm_handle.h>
29#include <hardware/gralloc.h>
30#include <EGL/eglext.h>
31
32namespace android {
33
34#ifdef USE_DRM_GENERIC_IMPORTER
35// static
36Importer *Importer::CreateInstance(DrmResources *drm) {
37  DrmGenericImporter *importer = new DrmGenericImporter(drm);
38  if (!importer)
39    return NULL;
40
41  int ret = importer->Init();
42  if (ret) {
43    ALOGE("Failed to initialize the nv importer %d", ret);
44    delete importer;
45    return NULL;
46  }
47  return importer;
48}
49#endif
50
51DrmGenericImporter::DrmGenericImporter(DrmResources *drm) : drm_(drm) {
52}
53
54DrmGenericImporter::~DrmGenericImporter() {
55}
56
57int DrmGenericImporter::Init() {
58  int ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
59                          (const hw_module_t **)&gralloc_);
60  if (ret) {
61    ALOGE("Failed to open gralloc module");
62    return ret;
63  }
64  return 0;
65}
66
67uint32_t DrmGenericImporter::ConvertHalFormatToDrm(uint32_t hal_format) {
68  switch (hal_format) {
69    case HAL_PIXEL_FORMAT_RGB_888:
70      return DRM_FORMAT_BGR888;
71    case HAL_PIXEL_FORMAT_BGRA_8888:
72      return DRM_FORMAT_ARGB8888;
73    case HAL_PIXEL_FORMAT_RGBX_8888:
74      return DRM_FORMAT_XBGR8888;
75    case HAL_PIXEL_FORMAT_RGBA_8888:
76      return DRM_FORMAT_ABGR8888;
77    case HAL_PIXEL_FORMAT_RGB_565:
78      return DRM_FORMAT_BGR565;
79    case HAL_PIXEL_FORMAT_YV12:
80      return DRM_FORMAT_YVU420;
81    default:
82      ALOGE("Cannot convert hal format to drm format %u", hal_format);
83      return -EINVAL;
84  }
85}
86
87EGLImageKHR DrmGenericImporter::ImportImage(EGLDisplay egl_display, buffer_handle_t handle) {
88  gralloc_drm_handle_t *gr_handle = gralloc_drm_handle(handle);
89  if (!gr_handle)
90    return NULL;
91  EGLint attr[] = {
92    EGL_WIDTH, gr_handle->width,
93    EGL_HEIGHT, gr_handle->height,
94    EGL_LINUX_DRM_FOURCC_EXT, (EGLint)ConvertHalFormatToDrm(gr_handle->format),
95    EGL_DMA_BUF_PLANE0_FD_EXT, gr_handle->prime_fd,
96    EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
97    EGL_DMA_BUF_PLANE0_PITCH_EXT, gr_handle->stride,
98    EGL_NONE,
99  };
100  return eglCreateImageKHR(egl_display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, attr);
101}
102
103int DrmGenericImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
104  gralloc_drm_handle_t *gr_handle = gralloc_drm_handle(handle);
105  if (!gr_handle)
106    return -EINVAL;
107
108  uint32_t gem_handle;
109  int ret = drmPrimeFDToHandle(drm_->fd(), gr_handle->prime_fd, &gem_handle);
110  if (ret) {
111    ALOGE("failed to import prime fd %d ret=%d", gr_handle->prime_fd, ret);
112    return ret;
113  }
114
115  memset(bo, 0, sizeof(hwc_drm_bo_t));
116  bo->width = gr_handle->width;
117  bo->height = gr_handle->height;
118  bo->format = ConvertHalFormatToDrm(gr_handle->format);
119  bo->pitches[0] = gr_handle->stride;
120  bo->gem_handles[0] = gem_handle;
121  bo->offsets[0] = 0;
122
123  ret = drmModeAddFB2(drm_->fd(), bo->width, bo->height, bo->format,
124                      bo->gem_handles, bo->pitches, bo->offsets, &bo->fb_id, 0);
125  if (ret) {
126    ALOGE("could not create drm fb %d", ret);
127    return ret;
128  }
129
130  return ret;
131}
132
133int DrmGenericImporter::ReleaseBuffer(hwc_drm_bo_t *bo) {
134  if (bo->fb_id)
135    if (drmModeRmFB(drm_->fd(), bo->fb_id))
136      ALOGE("Failed to rm fb");
137
138  struct drm_gem_close gem_close;
139  memset(&gem_close, 0, sizeof(gem_close));
140  int num_gem_handles = sizeof(bo->gem_handles) / sizeof(bo->gem_handles[0]);
141  for (int i = 0; i < num_gem_handles; i++) {
142    if (!bo->gem_handles[i])
143      continue;
144
145    gem_close.handle = bo->gem_handles[i];
146    int ret = drmIoctl(drm_->fd(), DRM_IOCTL_GEM_CLOSE, &gem_close);
147    if (ret)
148      ALOGE("Failed to close gem handle %d %d", i, ret);
149    else
150      bo->gem_handles[i] = 0;
151  }
152  return 0;
153}
154
155#ifdef USE_DRM_GENERIC_IMPORTER
156std::unique_ptr<Planner> Planner::CreateInstance(DrmResources *) {
157  std::unique_ptr<Planner> planner(new Planner);
158  planner->AddStage<PlanStageGreedy>();
159  return planner;
160}
161#endif
162}
163