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https://github.com/FFmpeg/FFmpeg.git
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hwcontext_opencl: DRM to OpenCL mapping for ARM
Using cl_arm_import_memory. Unfortunately, despite this not being a standard extension, the function clImportMemoryARM() is not accessible via clGetExtensionFunctionAddressForPlatform(). This means that it has to be linked directly to the ARM OpenCL binary, so making a portable binary is not possible as it is with all other mapping extensions.
This commit is contained in:
Mark Thompson
parent
f06754e4f3
commit
7faae6e745
6
configure
vendored
6
configure
vendored
@ -2121,6 +2121,7 @@ HAVE_LIST="
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makeinfo
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makeinfo_html
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opencl_d3d11
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opencl_drm_arm
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opencl_dxva2
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opencl_vaapi_beignet
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opencl_vaapi_intel_media
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@ -6178,6 +6179,11 @@ if enabled_all opencl d3d11va ; then
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enable opencl_d3d11
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fi
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if enabled_all opencl libdrm ; then
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check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
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enable opencl_drm_arm
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fi
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enabled vdpau &&
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check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
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disable vdpau
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@ -56,6 +56,12 @@
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#include "hwcontext_d3d11va.h"
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#endif
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#if HAVE_OPENCL_DRM_ARM
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#include <CL/cl_ext.h>
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#include <drm_fourcc.h>
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#include "hwcontext_drm.h"
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#endif
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typedef struct OpenCLDeviceContext {
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// Default command queue to use for transfer/mapping operations on
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@ -104,6 +110,10 @@ typedef struct OpenCLDeviceContext {
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clEnqueueReleaseD3D11ObjectsKHR_fn
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clEnqueueReleaseD3D11ObjectsKHR;
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#endif
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#if HAVE_OPENCL_DRM_ARM
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int drm_arm_mapping_usable;
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#endif
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} OpenCLDeviceContext;
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typedef struct OpenCLFramesContext {
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@ -826,6 +836,37 @@ static int opencl_device_init(AVHWDeviceContext *hwdev)
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}
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#endif
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#if HAVE_OPENCL_DRM_ARM
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{
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const char *drm_arm_ext = "cl_arm_import_memory";
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const char *image_ext = "cl_khr_image2d_from_buffer";
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int fail = 0;
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if (!opencl_check_extension(hwdev, drm_arm_ext)) {
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av_log(hwdev, AV_LOG_VERBOSE, "The %s extension is "
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"required for DRM to OpenCL mapping on ARM.\n",
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drm_arm_ext);
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fail = 1;
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}
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if (!opencl_check_extension(hwdev, image_ext)) {
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av_log(hwdev, AV_LOG_VERBOSE, "The %s extension is "
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"required for DRM to OpenCL mapping on ARM.\n",
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image_ext);
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fail = 1;
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}
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// clImportMemoryARM() is linked statically.
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if (fail) {
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av_log(hwdev, AV_LOG_WARNING, "DRM to OpenCL mapping on ARM "
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"not usable.\n");
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priv->drm_arm_mapping_usable = 0;
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} else {
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priv->drm_arm_mapping_usable = 1;
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}
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}
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#endif
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#undef CL_FUNC
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return 0;
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@ -1104,6 +1145,40 @@ static int opencl_filter_gpu_device(AVHWDeviceContext *hwdev,
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}
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#endif
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#if HAVE_OPENCL_DRM_ARM
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static int opencl_filter_drm_arm_platform(AVHWDeviceContext *hwdev,
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cl_platform_id platform_id,
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const char *platform_name,
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void *context)
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{
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const char *drm_arm_ext = "cl_arm_import_memory";
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if (opencl_check_platform_extension(platform_id, drm_arm_ext)) {
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return 0;
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} else {
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av_log(hwdev, AV_LOG_DEBUG, "Platform %s does not support the "
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"%s extension.\n", platform_name, drm_arm_ext);
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return 1;
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}
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}
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static int opencl_filter_drm_arm_device(AVHWDeviceContext *hwdev,
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cl_device_id device_id,
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const char *device_name,
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void *context)
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{
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const char *drm_arm_ext = "cl_arm_import_memory";
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if (opencl_check_device_extension(device_id, drm_arm_ext)) {
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return 0;
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} else {
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av_log(hwdev, AV_LOG_DEBUG, "Device %s does not support the "
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"%s extension.\n", device_name, drm_arm_ext);
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return 1;
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}
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}
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#endif
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static int opencl_device_derive(AVHWDeviceContext *hwdev,
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AVHWDeviceContext *src_ctx,
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int flags)
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@ -1250,6 +1325,24 @@ static int opencl_device_derive(AVHWDeviceContext *hwdev,
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break;
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#endif
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#if HAVE_OPENCL_DRM_ARM
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case AV_HWDEVICE_TYPE_DRM:
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{
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OpenCLDeviceSelector selector = {
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.platform_index = -1,
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.device_index = -1,
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.context = NULL,
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.enumerate_platforms = &opencl_enumerate_platforms,
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.filter_platform = &opencl_filter_drm_arm_platform,
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.enumerate_devices = &opencl_enumerate_devices,
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.filter_device = &opencl_filter_drm_arm_device,
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};
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err = opencl_device_create_internal(hwdev, &selector, NULL);
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}
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break;
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#endif
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default:
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err = AVERROR(ENOSYS);
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break;
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@ -2558,6 +2651,165 @@ fail:
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#endif
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#if HAVE_OPENCL_DRM_ARM
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typedef struct DRMARMtoOpenCLMapping {
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int nb_objects;
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cl_mem object_buffers[AV_DRM_MAX_PLANES];
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int nb_planes;
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cl_mem plane_images[AV_DRM_MAX_PLANES];
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} DRMARMtoOpenCLMapping;
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static void opencl_unmap_from_drm_arm(AVHWFramesContext *dst_fc,
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HWMapDescriptor *hwmap)
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{
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DRMARMtoOpenCLMapping *mapping = hwmap->priv;
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int i;
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for (i = 0; i < mapping->nb_planes; i++)
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clReleaseMemObject(mapping->plane_images[i]);
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for (i = 0; i < mapping->nb_objects; i++)
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clReleaseMemObject(mapping->object_buffers[i]);
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av_free(mapping);
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}
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static int opencl_map_from_drm_arm(AVHWFramesContext *dst_fc, AVFrame *dst,
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const AVFrame *src, int flags)
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{
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AVHWFramesContext *src_fc =
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(AVHWFramesContext*)src->hw_frames_ctx->data;
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AVOpenCLDeviceContext *dst_dev = dst_fc->device_ctx->hwctx;
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const AVDRMFrameDescriptor *desc;
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DRMARMtoOpenCLMapping *mapping = NULL;
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cl_mem_flags cl_flags;
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const cl_import_properties_arm props[3] = {
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CL_IMPORT_TYPE_ARM, CL_IMPORT_TYPE_DMA_BUF_ARM, 0,
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};
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cl_int cle;
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int err, i, j;
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desc = (const AVDRMFrameDescriptor*)src->data[0];
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cl_flags = opencl_mem_flags_for_mapping(flags);
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if (!cl_flags)
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return AVERROR(EINVAL);
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mapping = av_mallocz(sizeof(*mapping));
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if (!mapping)
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return AVERROR(ENOMEM);
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mapping->nb_objects = desc->nb_objects;
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for (i = 0; i < desc->nb_objects; i++) {
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int fd = desc->objects[i].fd;
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av_log(dst_fc, AV_LOG_DEBUG, "Map DRM PRIME fd %d to OpenCL.\n", fd);
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if (desc->objects[i].format_modifier) {
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av_log(dst_fc, AV_LOG_DEBUG, "Warning: object %d fd %d has "
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"nonzero format modifier %"PRId64", result may not "
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"be as expected.\n", i, fd,
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desc->objects[i].format_modifier);
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}
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mapping->object_buffers[i] =
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clImportMemoryARM(dst_dev->context, cl_flags, props,
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&fd, desc->objects[i].size, &cle);
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if (!mapping->object_buffers[i]) {
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av_log(dst_fc, AV_LOG_ERROR, "Failed to create CL buffer "
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"from object %d (fd %d, size %zu) of DRM frame: %d.\n",
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i, fd, desc->objects[i].size, cle);
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err = AVERROR(EIO);
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goto fail;
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}
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}
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mapping->nb_planes = 0;
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for (i = 0; i < desc->nb_layers; i++) {
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const AVDRMLayerDescriptor *layer = &desc->layers[i];
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for (j = 0; j < layer->nb_planes; j++) {
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const AVDRMPlaneDescriptor *plane = &layer->planes[j];
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cl_mem plane_buffer;
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cl_image_format image_format;
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cl_image_desc image_desc;
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cl_buffer_region region;
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int p = mapping->nb_planes;
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err = opencl_get_plane_format(src_fc->sw_format, p,
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src_fc->width, src_fc->height,
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&image_format, &image_desc);
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if (err < 0) {
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av_log(dst_fc, AV_LOG_ERROR, "Invalid plane %d (DRM "
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"layer %d plane %d): %d.\n", p, i, j, err);
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goto fail;
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}
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region.origin = plane->offset;
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region.size = image_desc.image_row_pitch *
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image_desc.image_height;
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plane_buffer =
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clCreateSubBuffer(mapping->object_buffers[plane->object_index],
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cl_flags,
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CL_BUFFER_CREATE_TYPE_REGION,
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®ion, &cle);
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if (!plane_buffer) {
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av_log(dst_fc, AV_LOG_ERROR, "Failed to create sub-buffer "
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"for plane %d: %d.\n", p, cle);
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err = AVERROR(EIO);
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goto fail;
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}
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image_desc.buffer = plane_buffer;
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mapping->plane_images[p] =
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clCreateImage(dst_dev->context, cl_flags,
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&image_format, &image_desc, NULL, &cle);
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// Unreference the sub-buffer immediately - we don't need it
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// directly and a reference is held by the image.
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clReleaseMemObject(plane_buffer);
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if (!mapping->plane_images[p]) {
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av_log(dst_fc, AV_LOG_ERROR, "Failed to create image "
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"for plane %d: %d.\n", p, cle);
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err = AVERROR(EIO);
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goto fail;
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}
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++mapping->nb_planes;
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}
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}
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for (i = 0; i < mapping->nb_planes; i++)
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dst->data[i] = (uint8_t*)mapping->plane_images[i];
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err = ff_hwframe_map_create(dst->hw_frames_ctx, dst, src,
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&opencl_unmap_from_drm_arm, mapping);
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if (err < 0)
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goto fail;
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dst->width = src->width;
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dst->height = src->height;
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return 0;
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fail:
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for (i = 0; i < mapping->nb_planes; i++) {
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clReleaseMemObject(mapping->plane_images[i]);
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}
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for (i = 0; i < mapping->nb_objects; i++) {
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if (mapping->object_buffers[i])
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clReleaseMemObject(mapping->object_buffers[i]);
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}
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av_free(mapping);
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return err;
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}
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#endif
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static int opencl_map_from(AVHWFramesContext *hwfc, AVFrame *dst,
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const AVFrame *src, int flags)
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{
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@ -2593,6 +2845,11 @@ static int opencl_map_to(AVHWFramesContext *hwfc, AVFrame *dst,
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case AV_PIX_FMT_D3D11:
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if (priv->d3d11_mapping_usable)
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return opencl_map_from_d3d11(hwfc, dst, src, flags);
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#endif
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#if HAVE_OPENCL_DRM_ARM
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case AV_PIX_FMT_DRM_PRIME:
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if (priv->drm_arm_mapping_usable)
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return opencl_map_from_drm_arm(hwfc, dst, src, flags);
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#endif
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}
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return AVERROR(ENOSYS);
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@ -2639,6 +2896,12 @@ static int opencl_frames_derive_to(AVHWFramesContext *dst_fc,
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return err;
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}
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break;
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#endif
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#if HAVE_OPENCL_DRM_ARM
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case AV_HWDEVICE_TYPE_DRM:
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if (!priv->drm_arm_mapping_usable)
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return AVERROR(ENOSYS);
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break;
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#endif
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default:
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return AVERROR(ENOSYS);
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