openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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#include "selfdrive/common/visionimg.h"
#include <cassert>
#ifdef QCOM
#include <gralloc_priv.h>
#include <system/graphics.h>
#include <ui/GraphicBuffer.h>
#include <ui/PixelFormat.h>
#define GL_GLEXT_PROTOTYPES
#include <GLES2/gl2ext.h>
using namespace android;
EGLImageTexture::EGLImageTexture(const VisionBuf *buf) {
const int bpp = 3;
assert((buf->len % buf->stride) == 0);
assert((buf->stride % bpp) == 0);
const int format = HAL_PIXEL_FORMAT_RGB_888;
private_handle = new private_handle_t(buf->fd, buf->len,
private_handle_t::PRIV_FLAGS_USES_ION|private_handle_t::PRIV_FLAGS_FRAMEBUFFER,
0, format,
buf->stride/bpp, buf->len/buf->stride,
buf->width, buf->height);
// GraphicBuffer is ref counted by EGLClientBuffer(ANativeWindowBuffer), no need and not possible to release.
GraphicBuffer* gb = new GraphicBuffer(buf->width, buf->height, (PixelFormat)format,
GraphicBuffer::USAGE_HW_TEXTURE, buf->stride/bpp, (private_handle_t*)private_handle, false);
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
assert(display != EGL_NO_DISPLAY);
EGLint img_attrs[] = {EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE};
img_khr = eglCreateImageKHR(display, EGL_NO_CONTEXT,
EGL_NATIVE_BUFFER_ANDROID, gb->getNativeBuffer(), img_attrs);
assert(img_khr != EGL_NO_IMAGE_KHR);
glGenTextures(1, &frame_tex);
glBindTexture(GL_TEXTURE_2D, frame_tex);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, img_khr);
}
EGLImageTexture::~EGLImageTexture() {
glDeleteTextures(1, &frame_tex);
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
assert(display != EGL_NO_DISPLAY);
eglDestroyImageKHR(display, img_khr);
delete (private_handle_t*)private_handle;
}
#else // ifdef QCOM
EGLImageTexture::EGLImageTexture(const VisionBuf *buf) {
glGenTextures(1, &frame_tex);
glBindTexture(GL_TEXTURE_2D, frame_tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, buf->width, buf->height, 0, GL_RGB, GL_UNSIGNED_BYTE, buf->addr);
glGenerateMipmap(GL_TEXTURE_2D);
}
EGLImageTexture::~EGLImageTexture() {
glDeleteTextures(1, &frame_tex);
}
#endif // ifdef QCOM