mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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296 lines
8.2 KiB
C
296 lines
8.2 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Collabora Ltd.
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* @author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* Copyright (C) 2014 Julien Isorce <julien.isorce@gmail.com>
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* Copyright (C) 2016 Matthew Waters <matthew@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gsteglimage.h"
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#include <string.h>
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#if GST_GL_HAVE_DMABUF
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#include <gst/allocators/gstdmabuf.h>
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#include <libdrm/drm_fourcc.h>
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#ifndef DRM_FORMAT_R8
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#define DRM_FORMAT_R8 fourcc_code('R', '8', ' ', ' ')
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#endif
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#ifndef DRM_FORMAT_RG88
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#define DRM_FORMAT_RG88 fourcc_code('R', 'G', '8', '8')
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#endif
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#ifndef DRM_FORMAT_GR88
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#define DRM_FORMAT_GR88 fourcc_code('G', 'R', '8', '8')
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#endif
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#endif
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#ifndef EGL_LINUX_DMA_BUF_EXT
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#define EGL_LINUX_DMA_BUF_EXT 0x3270
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#endif
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#ifndef EGL_LINUX_DRM_FOURCC_EXT
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#define EGL_LINUX_DRM_FOURCC_EXT 0x3271
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#endif
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#ifndef EGL_DMA_BUF_PLANE0_FD_EXT
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#define EGL_DMA_BUF_PLANE0_FD_EXT 0x3272
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#endif
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#ifndef EGL_DMA_BUF_PLANE0_OFFSET_EXT
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#define EGL_DMA_BUF_PLANE0_OFFSET_EXT 0x3273
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#endif
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#ifndef EGL_DMA_BUF_PLANE0_PITCH_EXT
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#define EGL_DMA_BUF_PLANE0_PITCH_EXT 0x3274
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#endif
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GST_DEFINE_MINI_OBJECT_TYPE (GstEGLImage, gst_egl_image);
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/* XXX: This is only used currently if dmabuf support is enabled */
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#if GST_GL_HAVE_DMABUF
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#ifndef GST_DISABLE_GST_DEBUG
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#define GST_CAT_DEFAULT gst_egl_image_ensure_debug_category()
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static GstDebugCategory *
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gst_egl_image_ensure_debug_category (void)
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{
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static gsize cat_gonce = 0;
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if (g_once_init_enter (&cat_gonce)) {
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GstDebugCategory *cat = NULL;
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GST_DEBUG_CATEGORY_INIT (cat, "gleglimage", 0, "EGLImage wrapper");
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g_once_init_leave (&cat_gonce, (gsize) cat);
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}
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return (GstDebugCategory *) cat_gonce;
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}
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#endif /* GST_DISABLE_GST_DEBUG */
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#endif /* GST_GL_HAVE_DMABUF */
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EGLImageKHR
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gst_egl_image_get_image (GstEGLImage * image)
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{
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g_return_val_if_fail (GST_IS_EGL_IMAGE (image), EGL_NO_IMAGE_KHR);
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return image->image;
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}
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GstVideoGLTextureOrientation
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gst_egl_image_get_orientation (GstEGLImage * image)
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{
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g_return_val_if_fail (GST_IS_EGL_IMAGE (image),
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GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_NORMAL);
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return image->orientation;
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}
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static void
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_gst_egl_image_free_thread (GstGLContext * context, GstEGLImage * image)
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{
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if (image->destroy_notify)
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image->destroy_notify (image, image->destroy_data);
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}
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static void
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_gst_egl_image_free (GstMiniObject * object)
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{
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GstEGLImage *image = GST_EGL_IMAGE (object);
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if (image->context) {
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gst_gl_context_thread_add (GST_GL_CONTEXT (image->context),
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(GstGLContextThreadFunc) _gst_egl_image_free_thread, image);
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gst_object_unref (image->context);
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}
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}
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static GstMiniObject *
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_gst_egl_image_copy (GstMiniObject * obj)
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{
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return gst_mini_object_ref (obj);
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}
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GstEGLImage *
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gst_egl_image_new_wrapped (GstGLContext * context, EGLImageKHR image,
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GstVideoGLTextureType type, GstVideoGLTextureOrientation orientation,
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gpointer user_data, GstEGLImageDestroyNotify user_data_destroy)
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{
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GstEGLImage *img = NULL;
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g_return_val_if_fail (context != NULL, NULL);
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g_return_val_if_fail (GST_IS_GL_CONTEXT_EGL (context), NULL);
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g_return_val_if_fail (image != EGL_NO_IMAGE_KHR, NULL);
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img = g_new0 (GstEGLImage, 1);
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gst_mini_object_init (GST_MINI_OBJECT_CAST (img), 0, GST_TYPE_EGL_IMAGE,
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(GstMiniObjectCopyFunction) _gst_egl_image_copy, NULL,
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(GstMiniObjectFreeFunction) _gst_egl_image_free);
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img->context = gst_object_ref (context);
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img->image = image;
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img->type = type;
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img->orientation = orientation;
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img->destroy_data = user_data;
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img->destroy_notify = user_data_destroy;
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return img;
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}
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#if GST_GL_HAVE_DMABUF
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/*
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* GStreamer format descriptions differ from DRM formats as the representation
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* is relative to a register, hence in native endianness. To reduce the driver
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* requirement, we only import with a subset of texture formats and use
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* shaders to convert. This way we avoid having to use external texture
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* target.
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*/
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static int
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_drm_fourcc_from_info (GstVideoInfo * info, int plane)
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{
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GstVideoFormat format = GST_VIDEO_INFO_FORMAT (info);
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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const gint rgba_fourcc = DRM_FORMAT_ABGR8888;
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const gint rgb_fourcc = DRM_FORMAT_BGR888;
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const gint rg_fourcc = DRM_FORMAT_GR88;
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#else
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const gint rgba_fourcc = DRM_FORMAT_RGBA8888;
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const gint rgb_fourcc = DRM_FORMAT_RGB888;
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const gint rg_fourcc = DRM_FORMAT_RG88;
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#endif
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GST_DEBUG ("Getting DRM fourcc for %s plane %i",
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gst_video_format_to_string (format), plane);
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switch (format) {
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case GST_VIDEO_FORMAT_RGB16:
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case GST_VIDEO_FORMAT_BGR16:
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return DRM_FORMAT_RGB565;
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case GST_VIDEO_FORMAT_RGB:
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case GST_VIDEO_FORMAT_BGR:
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return rgb_fourcc;
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case GST_VIDEO_FORMAT_RGBA:
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case GST_VIDEO_FORMAT_RGBx:
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case GST_VIDEO_FORMAT_BGRA:
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case GST_VIDEO_FORMAT_BGRx:
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case GST_VIDEO_FORMAT_ARGB:
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case GST_VIDEO_FORMAT_xRGB:
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case GST_VIDEO_FORMAT_ABGR:
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case GST_VIDEO_FORMAT_xBGR:
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case GST_VIDEO_FORMAT_AYUV:
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return rgba_fourcc;
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case GST_VIDEO_FORMAT_GRAY8:
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return DRM_FORMAT_R8;
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case GST_VIDEO_FORMAT_YUY2:
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case GST_VIDEO_FORMAT_UYVY:
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case GST_VIDEO_FORMAT_GRAY16_LE:
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case GST_VIDEO_FORMAT_GRAY16_BE:
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return rg_fourcc;
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case GST_VIDEO_FORMAT_NV12:
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case GST_VIDEO_FORMAT_NV21:
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return plane == 0 ? DRM_FORMAT_R8 : rg_fourcc;
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case GST_VIDEO_FORMAT_I420:
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case GST_VIDEO_FORMAT_YV12:
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case GST_VIDEO_FORMAT_Y41B:
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case GST_VIDEO_FORMAT_Y42B:
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case GST_VIDEO_FORMAT_Y444:
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return DRM_FORMAT_R8;
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default:
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GST_ERROR ("Unsupported format for DMABuf.");
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return -1;
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}
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}
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static void
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_destroy_egl_image (GstEGLImage * image, gpointer user_data)
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{
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image->context->eglDestroyImage (image->context->egl_display, image->image);
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}
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GstEGLImage *
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gst_egl_image_from_dmabuf (GstGLContext * context,
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gint dmabuf, GstVideoInfo * in_info, gint plane, gsize offset)
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{
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GstGLContextEGL *ctx_egl = GST_GL_CONTEXT_EGL (context);
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gint fourcc;
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gint atti = 0;
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EGLint attribs[13];
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EGLImageKHR img = EGL_NO_IMAGE_KHR;
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GstVideoGLTextureType type;
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fourcc = _drm_fourcc_from_info (in_info, plane);
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type =
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gst_gl_texture_type_from_format (context, GST_VIDEO_INFO_FORMAT (in_info),
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plane);
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GST_DEBUG ("fourcc %.4s (%d) plane %d (%dx%d)",
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(char *) &fourcc, fourcc, plane,
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GST_VIDEO_INFO_COMP_WIDTH (in_info, plane),
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GST_VIDEO_INFO_COMP_HEIGHT (in_info, plane));
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attribs[atti++] = EGL_WIDTH;
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attribs[atti++] = GST_VIDEO_INFO_COMP_WIDTH (in_info, plane);
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attribs[atti++] = EGL_HEIGHT;
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attribs[atti++] = GST_VIDEO_INFO_COMP_HEIGHT (in_info, plane);
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attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
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attribs[atti++] = fourcc;
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attribs[atti++] = EGL_DMA_BUF_PLANE0_FD_EXT;
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attribs[atti++] = dmabuf;
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attribs[atti++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
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attribs[atti++] = offset;
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attribs[atti++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
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attribs[atti++] = GST_VIDEO_INFO_PLANE_STRIDE (in_info, plane);
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attribs[atti] = EGL_NONE;
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for (int i = 0; i < atti; i++)
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GST_LOG ("attr %i: %08X", i, attribs[i]);
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g_assert (atti == 12);
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img = ctx_egl->eglCreateImage (ctx_egl->egl_display, EGL_NO_CONTEXT,
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EGL_LINUX_DMA_BUF_EXT, NULL, attribs);
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if (!img) {
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GST_WARNING ("eglCreateImage failed: %s",
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gst_gl_context_egl_get_error_string (eglGetError ()));
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return NULL;
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}
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return gst_egl_image_new_wrapped (context, img, type,
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GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_NORMAL,
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(GstEGLImageDestroyNotify) _destroy_egl_image, NULL);
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}
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#endif /* GST_GL_HAVE_DMABUF */
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