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							3.5 KiB
						
					
					
				
			
		
		
	
	
							122 lines
						
					
					
						
							3.5 KiB
						
					
					
				#include <cassert>
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#ifdef QCOM
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#include <system/graphics.h>
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#include <ui/GraphicBuffer.h>
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#include <ui/PixelFormat.h>
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#include <gralloc_priv.h>
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#include <GLES3/gl3.h>
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#define GL_GLEXT_PROTOTYPES
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#include <GLES2/gl2ext.h>
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#include <EGL/egl.h>
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#define EGL_EGLEXT_PROTOTYPES
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#include <EGL/eglext.h>
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#endif
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#include "common/util.h"
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#include "common/visionbuf.h"
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#include "common/visionimg.h"
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#ifdef QCOM
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using namespace android;
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// from libadreno_utils.so
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extern "C" void compute_aligned_width_and_height(int width,
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                                      int height,
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                                      int bpp,
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                                      int tile_mode,
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                                      int raster_mode,
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                                      int padding_threshold,
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                                      int *aligned_w,
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                                      int *aligned_h);
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#endif
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void visionimg_compute_aligned_width_and_height(int width, int height, int *aligned_w, int *aligned_h) {
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#ifdef QCOM
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  compute_aligned_width_and_height(ALIGN(width, 32), ALIGN(height, 32), 3, 0, 0, 512, aligned_w, aligned_h);
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#else
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  *aligned_w = width; *aligned_h = height;
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#endif
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}
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VisionImg visionimg_alloc_rgb24(int width, int height, VisionBuf *out_buf) {
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  int aligned_w = 0, aligned_h = 0;
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  visionimg_compute_aligned_width_and_height(width, height, &aligned_w, &aligned_h);
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  int stride = aligned_w * 3;
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  size_t size = aligned_w * aligned_h * 3;
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  VisionBuf buf = visionbuf_allocate(size);
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  *out_buf = buf;
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  return (VisionImg){
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    .fd = buf.fd,
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    .format = VISIONIMG_FORMAT_RGB24,
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    .width = width,
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    .height = height,
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    .stride = stride,
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    .size = size,
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    .bpp = 3,
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  };
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}
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#ifdef QCOM
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EGLClientBuffer visionimg_to_egl(const VisionImg *img, void **pph) {
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  assert((img->size % img->stride) == 0);
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  assert((img->stride % img->bpp) == 0);
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  int format = 0;
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  if (img->format == VISIONIMG_FORMAT_RGB24) {
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    format = HAL_PIXEL_FORMAT_RGB_888;
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  } else {
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    assert(false);
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  }
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  private_handle_t* hnd = new private_handle_t(img->fd, img->size,
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                             private_handle_t::PRIV_FLAGS_USES_ION|private_handle_t::PRIV_FLAGS_FRAMEBUFFER,
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                             0, format,
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                             img->stride/img->bpp, img->size/img->stride,
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                             img->width, img->height);
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  GraphicBuffer* gb = new GraphicBuffer(img->width, img->height, (PixelFormat)format,
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                                        GraphicBuffer::USAGE_HW_TEXTURE, img->stride/img->bpp, hnd, false);
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  // GraphicBuffer is ref counted by EGLClientBuffer(ANativeWindowBuffer), no need and not possible to release.
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  *pph = hnd;
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  return (EGLClientBuffer) gb->getNativeBuffer();
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}
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GLuint visionimg_to_gl(const VisionImg *img, EGLImageKHR *pkhr, void **pph) {
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  EGLClientBuffer buf = visionimg_to_egl(img, pph);
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  EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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  assert(display != EGL_NO_DISPLAY);
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  EGLint img_attrs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE };
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  EGLImageKHR image = eglCreateImageKHR(display, EGL_NO_CONTEXT,
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                                        EGL_NATIVE_BUFFER_ANDROID, buf, img_attrs);
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  assert(image != EGL_NO_IMAGE_KHR);
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  GLuint tex = 0;
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  glGenTextures(1, &tex);
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  glBindTexture(GL_TEXTURE_2D, tex);
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  glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
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  *pkhr = image;
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  return tex;
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}
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void visionimg_destroy_gl(EGLImageKHR khr, void *ph) {
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  EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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  assert(display != EGL_NO_DISPLAY);
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  eglDestroyImageKHR(display, khr);
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  delete (private_handle_t*)ph;
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}
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#endif
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