@@ -297,6 +297,7 @@ External library support:
--enable-cuda-sdk enable CUDA features that require the CUDA SDK [no]
--disable-cuvid disable Nvidia CUVID support [autodetect]
--disable-d3d11va disable Microsoft Direct3D 11 video acceleration code [autodetect]
+ --enable-drm enable DRM code (Linux) [no]
--disable-dxva2 disable Microsoft DirectX 9 video acceleration code [autodetect]
--enable-libmfx enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
--enable-libnpp enable Nvidia Performance Primitives-based code [no]
@@ -1529,6 +1530,7 @@ EXTERNAL_LIBRARY_LIST="
$EXTERNAL_LIBRARY_GPLV3_LIST
chromaprint
crystalhd
+ drm
gcrypt
gnutls
jni
@@ -5783,6 +5785,7 @@ enabled coreimage_filter && { check_header_objcc QuartzCore/CoreImage.h || disa
enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
enabled decklink && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
{ check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
+enabled drm && require_pkg_config libdrm xf86drm.h drmGetVersion
enabled frei0r && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
enabled gmp && require gmp gmp.h mpz_export -lgmp
enabled gnutls && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
@@ -156,6 +156,7 @@ OBJS = adler32.o \
OBJS-$(!HAVE_ATOMICS_NATIVE) += atomic.o \
OBJS-$(CONFIG_CUDA) += hwcontext_cuda.o
+OBJS-$(CONFIG_DRM) += hwcontext_drm.o
OBJS-$(CONFIG_DXVA2) += hwcontext_dxva2.o
OBJS-$(CONFIG_QSV) += hwcontext_qsv.o
OBJS-$(CONFIG_LZO) += lzo.o
@@ -171,6 +172,7 @@ SLIBOBJS-$(HAVE_GNU_WINDRES) += avutilres.o
SKIPHEADERS-$(HAVE_CUDA_H) += hwcontext_cuda.h
SKIPHEADERS-$(CONFIG_CUDA) += hwcontext_cuda_internal.h
+SKIPHEADERS-$(CONFIG_DRM) += hwcontext_drm.h
SKIPHEADERS-$(CONFIG_DXVA2) += hwcontext_dxva2.h
SKIPHEADERS-$(CONFIG_QSV) += hwcontext_qsv.h
SKIPHEADERS-$(CONFIG_VAAPI) += hwcontext_vaapi.h
@@ -32,6 +32,9 @@ static const HWContextType *const hw_table[] = {
#if CONFIG_CUDA
&ff_hwcontext_type_cuda,
#endif
+#if CONFIG_DRM
+ &ff_hwcontext_type_drm,
+#endif
#if CONFIG_DXVA2
&ff_hwcontext_type_dxva2,
#endif
@@ -52,6 +55,7 @@ static const HWContextType *const hw_table[] = {
static const char *const hw_type_names[] = {
[AV_HWDEVICE_TYPE_CUDA] = "cuda",
+ [AV_HWDEVICE_TYPE_DRM] = "drm",
[AV_HWDEVICE_TYPE_DXVA2] = "dxva2",
[AV_HWDEVICE_TYPE_QSV] = "qsv",
[AV_HWDEVICE_TYPE_VAAPI] = "vaapi",
@@ -32,6 +32,7 @@ enum AVHWDeviceType {
AV_HWDEVICE_TYPE_QSV,
AV_HWDEVICE_TYPE_VIDEOTOOLBOX,
AV_HWDEVICE_TYPE_NONE,
+ AV_HWDEVICE_TYPE_DRM,
};
typedef struct AVHWDeviceInternal AVHWDeviceInternal;
new file mode 100644
@@ -0,0 +1,280 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include <fcntl.h>
+#include <sys/mman.h>
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#include <drm.h>
+#include <xf86drm.h>
+
+#include "hwcontext.h"
+#include "hwcontext_drm.h"
+#include "hwcontext_internal.h"
+#include "imgutils.h"
+
+
+static void drm_device_free(AVHWDeviceContext *hwdev)
+{
+ AVDRMDeviceContext *hwctx = hwdev->hwctx;
+
+ close(hwctx->fd);
+}
+
+static int drm_device_create(AVHWDeviceContext *hwdev, const char *device,
+ AVDictionary *opts, int flags)
+{
+ AVDRMDeviceContext *hwctx = hwdev->hwctx;
+ drmVersionPtr version;
+
+ hwctx->fd = open(device, O_RDWR);
+ if (hwctx->fd < 0)
+ return AVERROR_UNKNOWN;
+
+ version = drmGetVersion(hwctx->fd);
+ if (!version) {
+ av_log(hwdev, AV_LOG_ERROR, "Failed to DRM version information "
+ "from %s: probably not a DRM device?\n", device);
+ close(hwctx->fd);
+ return AVERROR(EINVAL);
+ }
+
+ av_log(hwdev, AV_LOG_VERBOSE, "Opened DRM device %s: driver %s "
+ "version %d.%d.%d.\n", device, version->name,
+ version->version_major, version->version_minor,
+ version->version_patchlevel);
+
+ drmFreeVersion(version);
+
+ hwdev->free = &drm_device_free;
+
+ return 0;
+}
+
+static int drm_get_buffer(AVHWFramesContext *hwfc, AVFrame *frame)
+{
+ frame->buf[0] = av_buffer_pool_get(hwfc->pool);
+ if (!frame->buf[0])
+ return AVERROR(ENOMEM);
+
+ frame->data[0] = (uint8_t*)frame->buf[0]->data;
+
+ frame->format = AV_PIX_FMT_DRM_PRIME;
+ frame->width = hwfc->width;
+ frame->height = hwfc->height;
+
+ return 0;
+}
+
+typedef struct DRMMapping {
+ // Address and length of each mmap()ed region.
+ void *address[AV_NUM_DATA_POINTERS];
+ size_t length[AV_NUM_DATA_POINTERS];
+} DRMMapping;
+
+static void drm_unmap_frame(AVHWFramesContext *hwfc,
+ HWMapDescriptor *hwmap)
+{
+ DRMMapping *map = hwmap->priv;
+ int plane;
+
+ for (plane = 0; plane < FF_ARRAY_ELEMS(map->address); plane++) {
+ if (map->address[plane])
+ munmap(map->address[plane], map->length[plane]);
+ }
+
+ av_free(map);
+}
+
+static int drm_map_frame(AVHWFramesContext *hwfc,
+ AVFrame *dst, const AVFrame *src, int flags)
+{
+ const AVDRMFrameDescriptor *desc = (AVDRMFrameDescriptor*)src->data[0];
+ DRMMapping *map;
+ int err, i, p;
+ int mmap_prot;
+ void *addr;
+
+ map = av_mallocz(sizeof(*map));
+ if (!map)
+ return AVERROR(ENOMEM);
+
+ mmap_prot = 0;
+ if (flags & AV_HWFRAME_MAP_READ)
+ mmap_prot |= PROT_READ;
+ if (flags & AV_HWFRAME_MAP_WRITE)
+ mmap_prot |= PROT_WRITE;
+
+ for (i = 0; i < desc->nb_objects; i++) {
+ addr = mmap(NULL, desc->objects[i].size, mmap_prot, MAP_SHARED,
+ desc->objects[i].fd, 0);
+ if (addr == MAP_FAILED) {
+ err = AVERROR(errno);
+ av_log(hwfc, AV_LOG_ERROR, "Failed to map DRM object %d to "
+ "memory: %d.\n", desc->objects[i].fd, errno);
+ // TODO: cleanup.
+ goto fail;
+ }
+
+ map->address[i] = addr;
+ map->length[i] = desc->objects[i].size;
+ }
+
+ for (p = 0; p < desc->nb_planes; p++) {
+ dst->data[p] = (uint8_t*)map->address[desc->planes[p].object_index] +
+ desc->planes[p].offset;
+ dst->linesize[p] = desc->planes[p].pitch;
+ }
+
+ dst->width = src->width;
+ dst->height = src->height;
+
+ err = ff_hwframe_map_create(src->hw_frames_ctx, dst, src,
+ &drm_unmap_frame, map);
+ if (err < 0)
+ return err;
+
+ return 0;
+
+fail:
+ av_free(map);
+ return err;
+}
+
+static int drm_transfer_get_formats(AVHWFramesContext *ctx,
+ enum AVHWFrameTransferDirection dir,
+ enum AVPixelFormat **formats)
+{
+ enum AVPixelFormat *pix_fmts;
+
+ pix_fmts = av_malloc_array(2, sizeof(*pix_fmts));
+ if (!pix_fmts)
+ return AVERROR(ENOMEM);
+
+ pix_fmts[0] = ctx->sw_format;
+ pix_fmts[1] = AV_PIX_FMT_NONE;
+
+ *formats = pix_fmts;
+ return 0;
+}
+
+static int drm_transfer_data_from(AVHWFramesContext *hwfc,
+ AVFrame *dst, const AVFrame *src)
+{
+ AVFrame *map;
+ int err;
+
+ if (dst->width > hwfc->width || dst->height > hwfc->height)
+ return AVERROR(EINVAL);
+
+ map = av_frame_alloc();
+ if (!map)
+ return AVERROR(ENOMEM);
+ map->format = dst->format;
+
+ err = drm_map_frame(hwfc, map, src, AV_HWFRAME_MAP_READ);
+ if (err)
+ goto fail;
+
+ map->width = dst->width;
+ map->height = dst->height;
+
+ err = av_frame_copy(dst, map);
+ if (err)
+ goto fail;
+
+ err = 0;
+fail:
+ av_frame_free(&map);
+ return err;
+}
+
+static int drm_transfer_data_to(AVHWFramesContext *hwfc,
+ AVFrame *dst, const AVFrame *src)
+{
+ AVFrame *map;
+ int err;
+
+ if (src->width > hwfc->width || src->height > hwfc->height)
+ return AVERROR(EINVAL);
+
+ map = av_frame_alloc();
+ if (!map)
+ return AVERROR(ENOMEM);
+ map->format = src->format;
+
+ err = drm_map_frame(hwfc, map, dst, AV_HWFRAME_MAP_WRITE | AV_HWFRAME_MAP_OVERWRITE);
+ if (err)
+ goto fail;
+
+ map->width = src->width;
+ map->height = src->height;
+
+ err = av_frame_copy(map, src);
+ if (err)
+ goto fail;
+
+ err = 0;
+fail:
+ av_frame_free(&map);
+ return err;
+}
+
+static int drm_map_from(AVHWFramesContext *hwfc, AVFrame *dst,
+ const AVFrame *src, int flags)
+{
+ int err;
+
+ if (hwfc->sw_format != dst->format)
+ return AVERROR(ENOSYS);
+
+ err = drm_map_frame(hwfc, dst, src, flags);
+ if (err)
+ return err;
+
+ err = av_frame_copy_props(dst, src);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+const HWContextType ff_hwcontext_type_drm = {
+ .type = AV_HWDEVICE_TYPE_DRM,
+ .name = "DRM",
+
+ .device_hwctx_size = sizeof(AVDRMDeviceContext),
+
+ .device_create = &drm_device_create,
+
+ .frames_get_buffer = &drm_get_buffer,
+
+ .transfer_get_formats = &drm_transfer_get_formats,
+ .transfer_data_to = &drm_transfer_data_to,
+ .transfer_data_from = &drm_transfer_data_from,
+ .map_from = &drm_map_from,
+
+ .pix_fmts = (const enum AVPixelFormat[]) {
+ AV_PIX_FMT_DRM_PRIME,
+ AV_PIX_FMT_NONE
+ },
+};
new file mode 100644
@@ -0,0 +1,145 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_HWCONTEXT_DRM_H
+#define AVUTIL_HWCONTEXT_DRM_H
+
+#include "frame.h"
+
+/**
+ * @file
+ * API-specific header for AV_HWDEVICE_TYPE_DRM.
+ *
+ * Internal frame allocation is not currently supported - all frames
+ * must be allocated by the user. Thus AVHWFramesContext is always
+ * NULL, though this may change if support for frame allocation is
+ * added in future.
+ */
+
+
+/**
+ * DRM object descriptor.
+ *
+ * Describes a single DRM object, addressing it as a PRIME file
+ * descriptor.
+ */
+typedef struct AVDRMObjectDescriptor {
+ /**
+ * DRM PRIME fd for the object.
+ */
+ int fd;
+ /**
+ * Format modifier applied to the object (DRM_FORMAT_MOD_*).
+ */
+ uint64_t format_modifier;
+ /**
+ * Total size of the object.
+ *
+ * (This includes any parts not which do not contain image data.)
+ */
+ size_t size;
+} AVDRMObjectDescriptor;
+
+/**
+ * DRM plane descriptor.
+ *
+ * Describes a single plane of an image, which is contained within
+ * single object.
+ */
+typedef struct AVDRMPlaneDescriptor {
+ /**
+ * Format of the plane (DRM_FORMAT_*).
+ *
+ * Note that this can be a multiple-plane format such as NV12:
+ * if so, this structure is only describes one plane of the
+ * image.
+ */
+ uint32_t format;
+ /**
+ * Index of this plane in within the current image.
+ *
+ * For single plane formats, this is always zero.
+ */
+ int plane_index;
+ /**
+ * Index of the object containing this plane in the objects
+ * array of the enclosing frame descriptor.
+ */
+ int object_index;
+ /**
+ * Offset within that object of this plane.
+ */
+ ptrdiff_t offset;
+ /**
+ * Pitch (linesize) of this plane.
+ */
+ ptrdiff_t pitch;
+} AVDRMPlaneDescriptor;
+
+/**
+ * DRM frame descriptor.
+ *
+ * This is used as the data pointer for AV_PIX_FMT_DRM_PRIME frames.
+ * It is also used by user-allocated frame pools - allocating in
+ * AVHWFramesContext.pool must return AVBufferRefs which contain
+ * an object of this type.
+ *
+ * The fields of this structure should be set such it can be
+ * imported directly by EGL using the EGL_EXT_image_dma_buf_import
+ * and EGL_EXT_image_dma_buf_import_modifiers extensions.
+ * (Note that the exact layout of a particular format may vary between
+ * platforms - we only specify that the same platform should be able
+ * to import it.)
+ */
+typedef struct AVDRMFrameDescriptor {
+ /**
+ * Number of DRM objects making up this frame.
+ */
+ int nb_objects;
+ /**
+ * Array of objects making up the frame.
+ */
+ AVDRMObjectDescriptor objects[AV_NUM_DATA_POINTERS];
+ /**
+ * Number of planes in the frame.
+ */
+ int nb_planes;
+ /**
+ * Array of planes in the frame.
+ */
+ AVDRMPlaneDescriptor planes[AV_NUM_DATA_POINTERS];
+} AVDRMFrameDescriptor;
+
+/**
+ * DRM device.
+ *
+ * Allocated as AVHWDeviceContext.hwctx.
+ */
+typedef struct AVDRMDeviceContext {
+ /**
+ * File descriptor of DRM device.
+ *
+ * This is used as the device to create frames on, and may also be
+ * used in some derivation and mapping operations.
+ *
+ * If no device is required, set to -1.
+ */
+ int fd;
+} AVDRMDeviceContext;
+
+#endif /* AVUTIL_HWCONTEXT_DRM_H */
@@ -158,6 +158,7 @@ int ff_hwframe_map_create(AVBufferRef *hwframe_ref,
extern const HWContextType ff_hwcontext_type_cuda;
+extern const HWContextType ff_hwcontext_type_drm;
extern const HWContextType ff_hwcontext_type_dxva2;
extern const HWContextType ff_hwcontext_type_qsv;
extern const HWContextType ff_hwcontext_type_vaapi;
@@ -2158,6 +2158,10 @@ static const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB] = {
.flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR |
AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
},
+ [AV_PIX_FMT_DRM_PRIME] = {
+ .name = "drm_prime",
+ .flags = AV_PIX_FMT_FLAG_HWACCEL,
+ },
};
#if FF_API_PLUS1_MINUS1
FF_ENABLE_DEPRECATION_WARNINGS
@@ -314,6 +314,10 @@ enum AVPixelFormat {
AV_PIX_FMT_P016LE, ///< like NV12, with 16bpp per component, little-endian
AV_PIX_FMT_P016BE, ///< like NV12, with 16bpp per component, big-endian
+ // DRM-managed buffers exposed through PRIME buffer sharing.
+ // data[0] points to an AVDRMFrameDescriptor.
+ AV_PIX_FMT_DRM_PRIME,
+
AV_PIX_FMT_NB ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
};