common.h

/*
 * Copyright (c) 2017 Rob Clark <rclark@redhat.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sub license,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#ifndef _COMMON_H
#define _COMMON_H

#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>

#include <drm_fourcc.h>
#include <gbm.h>
#include <stdbool.h>

#ifndef KMSCUBE_RESERVED_MINIGBM_PLANE
#define KMSCUBE_RESERVED_MINIGBM_PLANE 1
#endif

#ifndef DRM_FORMAT_MOD_LINEAR
#define DRM_FORMAT_MOD_LINEAR 0
#endif

#ifndef DRM_FORMAT_MOD_INVALID
#define DRM_FORMAT_MOD_INVALID ((((__u64)0) << 56) | ((1ULL << 56) - 1))
#endif

#ifndef EGL_KHR_platform_gbm
#define EGL_KHR_platform_gbm 1
#define EGL_PLATFORM_GBM_KHR 0x31D7
#endif /* EGL_KHR_platform_gbm */

#ifndef KMSCUBE_DISPLAY_WIDTH
#define KMSCUBE_DISPLAY_WIDTH 3840 
#endif

#ifndef KMSCUBE_DISPLAY_HEIGHT
#define KMSCUBE_DISPLAY_HEIGHT 2160
#endif

#ifndef EGL_EXT_platform_base
#define EGL_EXT_platform_base 1
typedef EGLDisplay(EGLAPIENTRYP PFNEGLGETPLATFORMDISPLAYEXTPROC)(
    EGLenum platform, void *native_display, const EGLint *attrib_list);
typedef EGLSurface(EGLAPIENTRYP PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC)(
    EGLDisplay dpy, EGLConfig config, void *native_window,
    const EGLint *attrib_list);
typedef EGLSurface(EGLAPIENTRYP PFNEGLCREATEPLATFORMPIXMAPSURFACEEXTPROC)(
    EGLDisplay dpy, EGLConfig config, void *native_pixmap,
    const EGLint *attrib_list);
#ifdef EGL_EGLEXT_PROTOTYPES
EGLAPI EGLDisplay EGLAPIENTRY eglGetPlatformDisplayEXT(
    EGLenum platform, void *native_display, const EGLint *attrib_list);
EGLAPI EGLSurface EGLAPIENTRY eglCreatePlatformWindowSurfaceEXT(
    EGLDisplay dpy, EGLConfig config, void *native_window,
    const EGLint *attrib_list);
EGLAPI EGLSurface EGLAPIENTRY eglCreatePlatformPixmapSurfaceEXT(
    EGLDisplay dpy, EGLConfig config, void *native_pixmap,
    const EGLint *attrib_list);
#endif
#endif /* EGL_EXT_platform_base */

#define WEAK __attribute__((weak))

/* Define tokens from EGL_EXT_image_dma_buf_import_modifiers */
#ifndef EGL_EXT_image_dma_buf_import_modifiers
#define EGL_EXT_image_dma_buf_import_modifiers 1
#define EGL_DMA_BUF_PLANE3_FD_EXT 0x3440
#define EGL_DMA_BUF_PLANE3_OFFSET_EXT 0x3441
#define EGL_DMA_BUF_PLANE3_PITCH_EXT 0x3442
#define EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT 0x3443
#define EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT 0x3444
#define EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT 0x3445
#define EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT 0x3446
#define EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT 0x3447
#define EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT 0x3448
#define EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT 0x3449
#define EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT 0x344A
#endif

struct gbm {
  struct gbm_device *dev;
  struct gbm_surface *surface;
  uint32_t format;
  int width, height;
};

const struct gbm *init_gbm(int drm_fd, int w, int h, uint64_t modifier);

struct egl {
  EGLDisplay display;
  EGLConfig config;
  EGLContext context;
  EGLSurface surface;

  PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT;
  PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR;
  PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR;
  PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES;
  PFNEGLCREATESYNCKHRPROC eglCreateSyncKHR;
  PFNEGLDESTROYSYNCKHRPROC eglDestroySyncKHR;
  PFNEGLWAITSYNCKHRPROC eglWaitSyncKHR;
  PFNEGLCLIENTWAITSYNCKHRPROC eglClientWaitSyncKHR;
  PFNEGLDUPNATIVEFENCEFDANDROIDPROC eglDupNativeFenceFDANDROID;

  bool modifiers_supported;

  void (*draw)(unsigned i);
};

static inline int __egl_check(void *ptr, const char *name) {
  if (!ptr) {
    printf("no %s\n", name);
    return -1;
  }
  return 0;
}

#define egl_check(egl, name) __egl_check((egl)->name, #name)

int init_egl(struct egl *egl, const struct gbm *gbm, int samples);
int create_program(const char *vs_src, const char *fs_src);
int link_program(unsigned program);

enum mode {
  SMOOTH,    /* smooth-shaded */
  RGBA,      /* single-plane RGBA */
  NV12_2IMG, /* NV12, handled as two textures and converted to RGB in shader */
  NV12_1IMG, /* NV12, imported as planar YUV eglimg */
  VIDEO,     /* video textured cube */
};

const struct egl *init_cube_smooth(const struct gbm *gbm, int samples);
const struct egl *init_cube_tex(const struct gbm *gbm, enum mode mode,
                                int samples);

#ifdef HAVE_GST

struct decoder;
struct decoder *video_init(const struct egl *egl, const struct gbm *gbm,
                           const char *filename);
EGLImage video_frame(struct decoder *dec);
void video_deinit(struct decoder *dec);

const struct egl *init_cube_video(const struct gbm *gbm, const char *video,
                                  int samples);

#else
static inline const struct egl *init_cube_video(const struct gbm *gbm,
                                                const char *video,
                                                int samples) {
  (void)gbm;
  (void)video;
  (void)samples;
  printf("no GStreamer support!\n");
  return NULL;
}
#endif

#endif /* _COMMON_H */