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2e86bc2724
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d9eaf737bd
GPG key ID:
22618F758B5BE2E5
1 changed files with 0 additions and 196 deletions
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#include <rfb/rfb.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include <xf86drm.h>
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#include <libdrm/drm_fourcc.h>
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#include <xf86drmMode.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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// #define APIENTRY
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// #define APIENTRYP APIENTRY *
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// #define GLAPI extern
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// // FIXME integrate into glad
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// typedef void(APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)(
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// GLenum target, GLeglImageOES image);
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// GLAPI PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glad_glEGLImageTargetTexture2DOES;
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// typedef void(APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC)(
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// GLenum target, GLeglImageOES image);
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// GLAPI PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC
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// glad_glEGLImageTargetRenderbufferStorageOES;
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// // FIXME glad
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// static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES;
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// extern void glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image);
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int main(int argc, const char **argv)
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{
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if (argc < 2) {
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printf("not enough arguments\n");
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return 1;
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}
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const char *card = argv[1];
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const int drmfd = open(card, O_RDONLY);
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if (drmfd < 0) {
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fprintf(stderr, "card %s open failed: %s\n", card, strerror(errno));
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return 1;
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}
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int err;
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int source_plane = 0;
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int source_crtc = 0;
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err = drmSetClientCap(drmfd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
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if (err < 0) {
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perror("Failed to set universal planes capability: primary planes will not be usable");
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}
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drmModePlane *plane = NULL;
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drmModePlaneRes *plane_res = NULL;
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drmModeFB2 *fb = NULL;
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if (source_plane > 0) {
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plane = drmModeGetPlane(drmfd, source_plane);
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if (!plane) {
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fprintf(stderr, "Failed to get plane %d: %s\n", source_plane, strerror(errno));
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goto cleanup;
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}
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if (plane->fb_id == 0) {
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fprintf(stderr, "Place %d does not have an attached framebuffer\n", source_plane);
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}
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}
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else {
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plane_res = drmModeGetPlaneResources(drmfd);
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if (!plane_res) {
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perror("Failed to get plane resources");
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goto cleanup;
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}
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int i;
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for (i = 0; i < plane_res->count_planes; i++) {
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plane = drmModeGetPlane(drmfd, plane_res->planes[i]);
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if (!plane) {
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fprintf(stderr, "Failed to get plane %u: %s\n", plane_res->planes[i], strerror(errno));
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continue;
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}
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printf("Plane %u CRTC %u FB %u\n", plane->plane_id, plane->crtc_id, plane->fb_id);
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if ((source_crtc > 0 && plane->crtc_id != source_crtc) || plane->fb_id == 0) {
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// Either not connected to the target source CRTC
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// or not active.
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drmModeFreePlane(plane);
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plane = NULL;
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continue;
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}
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break;
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}
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if (i == plane_res->count_planes) {
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if (source_crtc > 0) {
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fprintf(stderr, "No usable planes found on CRTC %d\n", source_crtc);
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} else {
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fprintf(stderr, "No usable planes found\n");
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}
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goto cleanup;
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}
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printf("Using plane %u to locate framebuffers\n", plane->plane_id);
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}
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uint32_t plane_id = plane->plane_id;
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fb = drmModeGetFB2(drmfd, plane->fb_id);
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if (!fb) {
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fprintf(stderr, "Failed to get framebuffer %u: %s\n", plane->fb_id, strerror(errno));
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goto cleanup;
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}
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//printf("Template framebuffer is %u: %ux%u %ubpp %ub depth %u pitch\n", fb->fb_id, fb->width, fb->height, fb->bpp, fb->depth, fb->pitch);
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printf("Template framebuffer is %u: %ux%u fourcc:%u mod:%u flags:%u\n", fb->fb_id, fb->width, fb->height, fb->pixel_format, fb->modifier, fb->flags);
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printf("handles %u %u %u %u\n", fb->handles[0], fb->handles[1], fb->handles[2], fb->handles[3]);
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printf("offsets %u %u %u %u\n", fb->offsets[0], fb->offsets[1], fb->offsets[2], fb->offsets[3]);
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printf("pitches %u %u %u %u\n", fb->pitches[0], fb->pitches[1], fb->pitches[2], fb->pitches[3]);
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printf("format %s, modifier %s:%s\n", drmGetFormatName(fb->pixel_format), drmGetFormatModifierVendor(fb->modifier), drmGetFormatModifierName(fb->modifier));
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if (!fb->handles[0]) {
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fprintf(stderr, "No handle set on framebuffer: maybe you need some additional capabilities?\n");
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goto cleanup;
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}
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int fd = -1;
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err = drmPrimeHandleToFD(drmfd, fb->handles[0], O_RDONLY, &fd);
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if (err < 0 || fd < 0) {
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perror("Failed to get PRIME fd from framebuffer handle");
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}
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// //size_t buflen = fb->width * fb->height * fb->bpp / 8;
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// size_t buflen = fb->width * fb->height * 32 / 8;
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// char *buf = malloc(buflen);
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// char *mapped = mmap(NULL, buflen, PROT_READ, MAP_SHARED, fd, 0);
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// if (mapped == MAP_FAILED) {
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// perror("mmap");
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// goto cleanup;
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// }
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// memcpy(buf, mapped, buflen);
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//unlink("/tmp/1.raw");
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//write(open("/tmp/1.raw", O_WRONLY | O_CREAT, 00644), buf, buflen);
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// EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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// eglInitialize(display, NULL, NULL);
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// EGLContext context = eglCreateContext(display, NULL, EGL_NO_CONTEXT, NULL);
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// eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, context);
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EGLAttrib attrs[] = {
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EGL_WIDTH, fb->width,
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EGL_HEIGHT, fb->height,
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EGL_LINUX_DRM_FOURCC_EXT, DRM_FORMAT_ARGB8888,
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EGL_DMA_BUF_PLANE0_FD_EXT, fd,
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EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
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EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT, 1,
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EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, 1 >> 32,
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EGL_NONE,
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};
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EGLImage image = eglCreateImage(EGL_NO_DISPLAY, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, attrs);
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if (glGetError() != GL_NO_ERROR) {
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fprintf(stderr, "eglCreateImage\n");
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}
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// Create an OpenGL texture and bind it to the EGL image
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GLuint texture;
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glGenTextures(1, &texture);
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if (glGetError() != GL_NO_ERROR) {
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fprintf(stderr, "glGenTextures\n");
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}
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glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture);
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if (glGetError() != GL_NO_ERROR) {
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fprintf(stderr, "glBindTexture\n");
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}
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PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES =
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(PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)eglGetProcAddress("glEGLImageTargetTexture2DOES");
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glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, image);
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if (glGetError() != GL_NO_ERROR) {
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fprintf(stderr, "glEGLImageTargetTexture2DOES\n");
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}
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// Read the pixel data from the texture
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GLubyte *buf = malloc(fb->width * fb->height * 4);
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glReadPixels(0, 0, fb->width, fb->height, GL_RGB, GL_UNSIGNED_BYTE, buf);
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if (glGetError() != GL_NO_ERROR) {
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fprintf(stderr, "glReadPixels\n");
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}
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// write(open("/tmp/1.raw", O_WRONLY | O_CREAT, 00644), buf, fb->width * fb->height * 4);
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rfbScreenInfoPtr server=rfbGetScreen(0,NULL,fb->width,fb->height,8,3,32/8);
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if(!server)
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return 1;
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server->frameBuffer=buf;
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rfbInitServer(server);
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rfbRunEventLoop(server,-1,FALSE);
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return(0);
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cleanup:
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close(drmfd);
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return 1;
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}
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