mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 04:01:08 +00:00
vulkan: add download element
Currently only downloads images into a host-visible buffer and synchronises immediately.
This commit is contained in:
Matthew Waters
parent
dc0c9dea7f
commit
3fef510c48
4 changed files with 974 additions and 0 deletions
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@ -32,6 +32,7 @@
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#include "vksink.h"
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#include "vkupload.h"
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#include "vkimageidentity.h"
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#include "vkdownload.h"
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#define GST_CAT_DEFAULT gst_vulkan_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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@ -51,6 +52,11 @@ plugin_init (GstPlugin * plugin)
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return FALSE;
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}
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if (!gst_element_register (plugin, "vulkandownload",
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GST_RANK_NONE, GST_TYPE_VULKAN_DOWNLOAD)) {
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return FALSE;
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}
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if (!gst_element_register (plugin, "vulkanimageidentity",
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GST_RANK_NONE, GST_TYPE_VULKAN_IMAGE_IDENTITY)) {
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return FALSE;
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@ -10,6 +10,7 @@ subdir('shaders')
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vulkan_sources = [
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'gstvulkan.c',
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'vkdownload.c',
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'vkfullscreenrender.c',
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'vkimageidentity.c',
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'vksink.c',
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880
ext/vulkan/vkdownload.c
Normal file
880
ext/vulkan/vkdownload.c
Normal file
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@ -0,0 +1,880 @@
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/*
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* GStreamer
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* Copyright (C) 2019 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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/**
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* SECTION:element-vulkandownload
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* @title: vulkandownload
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*
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* vulkandownload downloads data into Vulkan memory objects.
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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 <string.h>
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#include "vkdownload.h"
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#include "vktrash.h"
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GST_DEBUG_CATEGORY (gst_debug_vulkan_download);
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#define GST_CAT_DEFAULT gst_debug_vulkan_download
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static GstCaps *
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_set_caps_features_with_passthrough (const GstCaps * caps,
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const gchar * feature_name, GstCapsFeatures * passthrough)
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{
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guint i, j, m, n;
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GstCaps *tmp;
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tmp = gst_caps_copy (caps);
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n = gst_caps_get_size (caps);
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for (i = 0; i < n; i++) {
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GstCapsFeatures *features, *orig_features;
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orig_features = gst_caps_get_features (caps, i);
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features = gst_caps_features_new (feature_name, NULL);
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m = gst_caps_features_get_size (orig_features);
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for (j = 0; j < m; j++) {
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const gchar *feature = gst_caps_features_get_nth (orig_features, j);
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/* if we already have the features */
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if (gst_caps_features_contains (features, feature))
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continue;
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if (g_strcmp0 (feature, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY) == 0)
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continue;
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if (passthrough && gst_caps_features_contains (passthrough, feature)) {
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gst_caps_features_add (features, feature);
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}
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}
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gst_caps_set_features (tmp, i, features);
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}
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return tmp;
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}
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struct ImageToRawDownload
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{
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GstVulkanDownload *download;
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GstVideoInfo in_info;
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GstVideoInfo out_info;
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GstBufferPool *pool;
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gboolean pool_active;
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GstVulkanCommandPool *cmd_pool;
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GList *trash_list;
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};
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static gpointer
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_image_to_raw_new_impl (GstVulkanDownload * download)
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{
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struct ImageToRawDownload *raw = g_new0 (struct ImageToRawDownload, 1);
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raw->download = download;
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return raw;
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}
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static GstCaps *
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_image_to_raw_transform_caps (gpointer impl, GstPadDirection direction,
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GstCaps * caps)
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{
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GstCaps *ret;
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if (direction == GST_PAD_SINK) {
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ret =
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_set_caps_features_with_passthrough (caps,
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GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY, NULL);
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} else {
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ret =
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_set_caps_features_with_passthrough (caps,
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GST_CAPS_FEATURE_MEMORY_VULKAN_IMAGE, NULL);
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}
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return ret;
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}
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static gboolean
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_image_to_raw_set_caps (gpointer impl, GstCaps * in_caps, GstCaps * out_caps)
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{
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struct ImageToRawDownload *raw = impl;
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if (!gst_video_info_from_caps (&raw->in_info, in_caps))
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return FALSE;
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if (!gst_video_info_from_caps (&raw->out_info, out_caps))
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return FALSE;
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return TRUE;
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}
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static void
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_image_to_raw_propose_allocation (gpointer impl, GstQuery * decide_query,
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GstQuery * query)
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{
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/* FIXME: implement */
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}
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static GstFlowReturn
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_image_to_raw_perform (gpointer impl, GstBuffer * inbuf, GstBuffer ** outbuf)
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{
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struct ImageToRawDownload *raw = impl;
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VkCommandBuffer cmd;
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GError *error = NULL;
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GstFlowReturn ret;
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VkResult err;
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int i;
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if (!raw->cmd_pool) {
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if (!(raw->cmd_pool =
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gst_vulkan_queue_create_command_pool (raw->download->queue,
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&error))) {
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goto error;
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}
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}
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if (!(cmd = gst_vulkan_command_pool_create (raw->cmd_pool, &error)))
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goto error;
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if (!raw->pool) {
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GstStructure *config;
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guint min = 0, max = 0;
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gsize size = 1;
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raw->pool = gst_vulkan_buffer_pool_new (raw->download->device);
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config = gst_buffer_pool_get_config (raw->pool);
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gst_buffer_pool_config_set_params (config, raw->download->out_caps, size,
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min, max);
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gst_buffer_pool_set_config (raw->pool, config);
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}
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if (!raw->pool_active) {
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gst_buffer_pool_set_active (raw->pool, TRUE);
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raw->pool_active = TRUE;
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}
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if ((ret =
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gst_buffer_pool_acquire_buffer (raw->pool, outbuf,
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NULL)) != GST_FLOW_OK)
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goto out;
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{
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/* *INDENT-OFF* */
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VkCommandBufferBeginInfo cmd_buf_info = {
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.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
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.pNext = NULL,
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.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT,
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.pInheritanceInfo = NULL
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};
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/* *INDENT-ON* */
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err = vkBeginCommandBuffer (cmd, &cmd_buf_info);
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if (gst_vulkan_error_to_g_error (err, &error, "vkBeginCommandBuffer") < 0)
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return FALSE;
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}
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for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&raw->out_info); i++) {
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VkBufferImageCopy region;
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GstMemory *in_mem, *out_mem;
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GstVulkanBufferMemory *buf_mem;
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GstVulkanImageMemory *img_mem;
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VkImageMemoryBarrier image_memory_barrier;
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VkBufferMemoryBarrier buffer_memory_barrier;
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in_mem = gst_buffer_peek_memory (inbuf, i);
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if (!gst_is_vulkan_image_memory (in_mem)) {
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GST_WARNING_OBJECT (raw->download, "Input is not a GstVulkanImageMemory");
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goto error;
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}
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img_mem = (GstVulkanImageMemory *) in_mem;
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out_mem = gst_buffer_peek_memory (*outbuf, i);
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if (!gst_is_vulkan_buffer_memory (out_mem)) {
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GST_WARNING_OBJECT (raw->download,
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"Output is not a GstVulkanBufferMemory");
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goto error;
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}
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buf_mem = (GstVulkanBufferMemory *) out_mem;
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/* *INDENT-OFF* */
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region = (VkBufferImageCopy) {
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.bufferOffset = 0,
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.bufferRowLength = GST_VIDEO_INFO_COMP_WIDTH (&raw->in_info, i),
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.bufferImageHeight = GST_VIDEO_INFO_COMP_HEIGHT (&raw->in_info, i),
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.imageSubresource = {
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.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
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.mipLevel = 0,
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.baseArrayLayer = 0,
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.layerCount = 1,
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},
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.imageOffset = { .x = 0, .y = 0, .z = 0, },
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.imageExtent = {
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.width = GST_VIDEO_INFO_COMP_WIDTH (&raw->out_info, i),
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.height = GST_VIDEO_INFO_COMP_HEIGHT (&raw->out_info, i),
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.depth = 1,
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}
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};
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image_memory_barrier = (VkImageMemoryBarrier) {
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.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
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.pNext = NULL,
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.srcAccessMask = img_mem->barrier.parent.access_flags,
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.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT,
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.oldLayout = img_mem->barrier.image_layout,
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.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
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/* FIXME: implement exclusive transfers */
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.srcQueueFamilyIndex = 0,
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.dstQueueFamilyIndex = 0,
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.image = img_mem->image,
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.subresourceRange = img_mem->barrier.subresource_range
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};
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buffer_memory_barrier = (VkBufferMemoryBarrier) {
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.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
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.pNext = NULL,
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.srcAccessMask = buf_mem->barrier.parent.access_flags,
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.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
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/* FIXME: implement exclusive transfers */
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.srcQueueFamilyIndex = 0,
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.dstQueueFamilyIndex = 0,
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.buffer = buf_mem->buffer,
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.offset = region.bufferOffset,
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.size = region.bufferRowLength * region.bufferImageHeight
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};
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/* *INDENT-ON* */
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vkCmdPipelineBarrier (cmd,
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buf_mem->barrier.parent.pipeline_stages | img_mem->barrier.
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parent.pipeline_stages, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, NULL, 1,
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&buffer_memory_barrier, 1, &image_memory_barrier);
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buf_mem->barrier.parent.pipeline_stages = VK_PIPELINE_STAGE_TRANSFER_BIT;
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buf_mem->barrier.parent.access_flags = buffer_memory_barrier.dstAccessMask;
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img_mem->barrier.parent.pipeline_stages = VK_PIPELINE_STAGE_TRANSFER_BIT;
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img_mem->barrier.parent.access_flags = image_memory_barrier.dstAccessMask;
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img_mem->barrier.image_layout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
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vkCmdCopyImageToBuffer (cmd, img_mem->image, img_mem->barrier.image_layout,
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buf_mem->buffer, 1, ®ion);
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}
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err = vkEndCommandBuffer (cmd);
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if (gst_vulkan_error_to_g_error (err, &error, "vkEndCommandBuffer") < 0)
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return FALSE;
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{
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VkSubmitInfo submit_info = { 0, };
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VkPipelineStageFlags stages = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
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GstVulkanFence *fence;
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/* *INDENT-OFF* */
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submit_info = (VkSubmitInfo) {
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.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
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.pNext = NULL,
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.waitSemaphoreCount = 0,
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.pWaitSemaphores = NULL,
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.pWaitDstStageMask = &stages,
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.commandBufferCount = 1,
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.pCommandBuffers = &cmd,
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.signalSemaphoreCount = 0,
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.pSignalSemaphores = NULL
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};
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/* *INDENT-ON* */
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fence = gst_vulkan_fence_new (raw->download->device, 0, &error);
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if (!fence)
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goto error;
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err =
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vkQueueSubmit (raw->download->queue->queue, 1, &submit_info,
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GST_VULKAN_FENCE_FENCE (fence));
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if (gst_vulkan_error_to_g_error (err, &error, "vkQueueSubmit") < 0)
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goto error;
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raw->trash_list = g_list_prepend (raw->trash_list,
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gst_vulkan_trash_new_free_command_buffer (fence, raw->cmd_pool, cmd));
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}
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/* XXX: STALL!
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* Need to have the buffer gst_memory_map() wait for this fence before
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* allowing access */
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gst_vulkan_trash_list_wait (raw->trash_list, -1);
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raw->trash_list = NULL;
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ret = GST_FLOW_OK;
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out:
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return ret;
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error:
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if (error) {
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GST_WARNING_OBJECT (raw->download, "Error: %s", error->message);
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g_clear_error (&error);
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}
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gst_buffer_unref (*outbuf);
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*outbuf = NULL;
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ret = GST_FLOW_ERROR;
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goto out;
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return GST_FLOW_OK;
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}
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static void
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_image_to_raw_free (gpointer impl)
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{
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struct ImageToRawDownload *raw = impl;
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if (raw->pool) {
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if (raw->pool_active) {
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gst_buffer_pool_set_active (raw->pool, FALSE);
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}
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raw->pool_active = FALSE;
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gst_object_unref (raw->pool);
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raw->pool = NULL;
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}
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if (raw->cmd_pool) {
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gst_object_unref (raw->cmd_pool);
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raw->cmd_pool = NULL;
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}
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g_free (impl);
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}
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static GstStaticCaps _image_to_raw_in_templ =
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GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_VULKAN_IMAGE ")");
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static GstStaticCaps _image_to_raw_out_templ = GST_STATIC_CAPS ("video/x-raw");
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static const struct DownloadMethod image_to_raw_download = {
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"VulkanImageToRaw",
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&_image_to_raw_in_templ,
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&_image_to_raw_out_templ,
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_image_to_raw_new_impl,
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_image_to_raw_transform_caps,
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_image_to_raw_set_caps,
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_image_to_raw_propose_allocation,
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_image_to_raw_perform,
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_image_to_raw_free,
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};
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static const struct DownloadMethod *download_methods[] = {
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&image_to_raw_download,
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};
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static GstCaps *
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_get_input_template_caps (void)
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{
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GstCaps *ret = NULL;
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gint i;
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/* FIXME: cache this and invalidate on changes to download_methods */
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for (i = 0; i < G_N_ELEMENTS (download_methods); i++) {
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GstCaps *template = gst_static_caps_get (download_methods[i]->in_template);
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ret = ret == NULL ? template : gst_caps_merge (ret, template);
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}
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ret = gst_caps_simplify (ret);
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return ret;
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}
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static GstCaps *
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_get_output_template_caps (void)
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{
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GstCaps *ret = NULL;
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gint i;
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/* FIXME: cache this and invalidate on changes to download_methods */
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for (i = 0; i < G_N_ELEMENTS (download_methods); i++) {
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GstCaps *template = gst_static_caps_get (download_methods[i]->out_template);
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ret = ret == NULL ? template : gst_caps_merge (ret, template);
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}
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ret = gst_caps_simplify (ret);
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return ret;
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}
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static void gst_vulkan_download_finalize (GObject * object);
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static gboolean gst_vulkan_download_query (GstBaseTransform * bt,
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GstPadDirection direction, GstQuery * query);
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static void gst_vulkan_download_set_context (GstElement * element,
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GstContext * context);
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static GstStateChangeReturn gst_vulkan_download_change_state (GstElement *
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element, GstStateChange transition);
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|
||||
static gboolean gst_vulkan_download_set_caps (GstBaseTransform * bt,
|
||||
GstCaps * in_caps, GstCaps * out_caps);
|
||||
static GstCaps *gst_vulkan_download_transform_caps (GstBaseTransform * bt,
|
||||
GstPadDirection direction, GstCaps * caps, GstCaps * filter);
|
||||
static gboolean gst_vulkan_download_propose_allocation (GstBaseTransform * bt,
|
||||
GstQuery * decide_query, GstQuery * query);
|
||||
static gboolean gst_vulkan_download_decide_allocation (GstBaseTransform * bt,
|
||||
GstQuery * query);
|
||||
static GstFlowReturn gst_vulkan_download_transform (GstBaseTransform * bt,
|
||||
GstBuffer * inbuf, GstBuffer * outbuf);
|
||||
static GstFlowReturn gst_vulkan_download_prepare_output_buffer (GstBaseTransform
|
||||
* bt, GstBuffer * inbuf, GstBuffer ** outbuf);
|
||||
|
||||
enum
|
||||
{
|
||||
PROP_0,
|
||||
};
|
||||
|
||||
enum
|
||||
{
|
||||
SIGNAL_0,
|
||||
LAST_SIGNAL
|
||||
};
|
||||
|
||||
/* static guint gst_vulkan_download_signals[LAST_SIGNAL] = { 0 }; */
|
||||
|
||||
#define gst_vulkan_download_parent_class parent_class
|
||||
G_DEFINE_TYPE_WITH_CODE (GstVulkanDownload, gst_vulkan_download,
|
||||
GST_TYPE_BASE_TRANSFORM, GST_DEBUG_CATEGORY_INIT (gst_debug_vulkan_download,
|
||||
"vulkandownload", 0, "Vulkan Downloader"));
|
||||
|
||||
static void
|
||||
gst_vulkan_download_class_init (GstVulkanDownloadClass * klass)
|
||||
{
|
||||
GObjectClass *gobject_class;
|
||||
GstElementClass *gstelement_class;
|
||||
GstBaseTransformClass *gstbasetransform_class;
|
||||
|
||||
gobject_class = (GObjectClass *) klass;
|
||||
gstelement_class = (GstElementClass *) klass;
|
||||
gstbasetransform_class = (GstBaseTransformClass *) klass;
|
||||
|
||||
gst_element_class_set_metadata (gstelement_class, "Vulkan Downloader",
|
||||
"Filter/Video", "A Vulkan data downloader",
|
||||
"Matthew Waters <matthew@centricular.com>");
|
||||
|
||||
{
|
||||
GstCaps *caps;
|
||||
|
||||
caps = _get_input_template_caps ();
|
||||
gst_element_class_add_pad_template (gstelement_class,
|
||||
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps));
|
||||
gst_caps_unref (caps);
|
||||
|
||||
caps = _get_output_template_caps ();
|
||||
gst_element_class_add_pad_template (gstelement_class,
|
||||
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps));
|
||||
gst_caps_unref (caps);
|
||||
}
|
||||
|
||||
gobject_class->finalize = gst_vulkan_download_finalize;
|
||||
|
||||
gstelement_class->change_state = gst_vulkan_download_change_state;
|
||||
gstelement_class->set_context = gst_vulkan_download_set_context;
|
||||
gstbasetransform_class->query = GST_DEBUG_FUNCPTR (gst_vulkan_download_query);
|
||||
gstbasetransform_class->set_caps = gst_vulkan_download_set_caps;
|
||||
gstbasetransform_class->transform_caps = gst_vulkan_download_transform_caps;
|
||||
gstbasetransform_class->propose_allocation =
|
||||
gst_vulkan_download_propose_allocation;
|
||||
gstbasetransform_class->decide_allocation =
|
||||
gst_vulkan_download_decide_allocation;
|
||||
gstbasetransform_class->transform = gst_vulkan_download_transform;
|
||||
gstbasetransform_class->prepare_output_buffer =
|
||||
gst_vulkan_download_prepare_output_buffer;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_vulkan_download_init (GstVulkanDownload * vk_download)
|
||||
{
|
||||
guint i, n;
|
||||
|
||||
n = G_N_ELEMENTS (download_methods);
|
||||
vk_download->download_impls = g_malloc (sizeof (gpointer) * n);
|
||||
for (i = 0; i < n; i++) {
|
||||
vk_download->download_impls[i] =
|
||||
download_methods[i]->new_impl (vk_download);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_vulkan_download_finalize (GObject * object)
|
||||
{
|
||||
GstVulkanDownload *vk_download = GST_VULKAN_DOWNLOAD (object);
|
||||
guint i;
|
||||
|
||||
gst_caps_replace (&vk_download->in_caps, NULL);
|
||||
gst_caps_replace (&vk_download->out_caps, NULL);
|
||||
|
||||
for (i = 0; i < G_N_ELEMENTS (download_methods); i++) {
|
||||
download_methods[i]->free (vk_download->download_impls[i]);
|
||||
}
|
||||
g_free (vk_download->download_impls);
|
||||
vk_download->download_impls = NULL;
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_vulkan_download_query (GstBaseTransform * bt, GstPadDirection direction,
|
||||
GstQuery * query)
|
||||
{
|
||||
GstVulkanDownload *vk_download = GST_VULKAN_DOWNLOAD (bt);
|
||||
|
||||
switch (GST_QUERY_TYPE (query)) {
|
||||
case GST_QUERY_CONTEXT:{
|
||||
if (gst_vulkan_handle_context_query (GST_ELEMENT (vk_download), query,
|
||||
NULL, &vk_download->instance, &vk_download->device))
|
||||
return TRUE;
|
||||
|
||||
if (gst_vulkan_queue_handle_context_query (GST_ELEMENT (vk_download),
|
||||
query, &vk_download->queue))
|
||||
return TRUE;
|
||||
|
||||
break;
|
||||
}
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return GST_BASE_TRANSFORM_CLASS (parent_class)->query (bt, direction, query);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_vulkan_download_set_context (GstElement * element, GstContext * context)
|
||||
{
|
||||
GstVulkanDownload *vk_download = GST_VULKAN_DOWNLOAD (element);
|
||||
|
||||
gst_vulkan_handle_set_context (element, context, NULL,
|
||||
&vk_download->instance);
|
||||
|
||||
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
|
||||
}
|
||||
|
||||
struct choose_data
|
||||
{
|
||||
GstVulkanDownload *download;
|
||||
GstVulkanQueue *queue;
|
||||
};
|
||||
|
||||
static gboolean
|
||||
_choose_queue (GstVulkanDevice * device, GstVulkanQueue * queue,
|
||||
struct choose_data *data)
|
||||
{
|
||||
guint flags = device->queue_family_props[queue->family].queueFlags;
|
||||
|
||||
if ((flags & VK_QUEUE_GRAPHICS_BIT) != 0) {
|
||||
if (data->queue)
|
||||
gst_object_unref (data->queue);
|
||||
data->queue = gst_object_ref (queue);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstVulkanQueue *
|
||||
_find_graphics_queue (GstVulkanDownload * download)
|
||||
{
|
||||
struct choose_data data;
|
||||
|
||||
data.download = download;
|
||||
data.queue = NULL;
|
||||
|
||||
gst_vulkan_device_foreach_queue (download->device,
|
||||
(GstVulkanDeviceForEachQueueFunc) _choose_queue, &data);
|
||||
|
||||
return data.queue;
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_vulkan_download_change_state (GstElement * element,
|
||||
GstStateChange transition)
|
||||
{
|
||||
GstVulkanDownload *vk_download = GST_VULKAN_DOWNLOAD (element);
|
||||
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
||||
|
||||
GST_DEBUG ("changing state: %s => %s",
|
||||
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
|
||||
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||
break;
|
||||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||||
if (!gst_vulkan_ensure_element_data (element, NULL,
|
||||
&vk_download->instance)) {
|
||||
GST_ELEMENT_ERROR (vk_download, RESOURCE, NOT_FOUND,
|
||||
("Failed to retreive vulkan instance"), (NULL));
|
||||
return GST_STATE_CHANGE_FAILURE;
|
||||
}
|
||||
if (!gst_vulkan_device_run_context_query (GST_ELEMENT (vk_download),
|
||||
&vk_download->device)) {
|
||||
GError *error = NULL;
|
||||
GST_DEBUG_OBJECT (vk_download,
|
||||
"No device retrieved from peer elements");
|
||||
if (!(vk_download->device =
|
||||
gst_vulkan_instance_create_device (vk_download->instance,
|
||||
&error))) {
|
||||
GST_ELEMENT_ERROR (vk_download, RESOURCE, NOT_FOUND,
|
||||
("Failed to create vulkan device"), ("%s", error->message));
|
||||
g_clear_error (&error);
|
||||
return GST_STATE_CHANGE_FAILURE;
|
||||
}
|
||||
}
|
||||
|
||||
if (!gst_vulkan_queue_run_context_query (GST_ELEMENT (vk_download),
|
||||
&vk_download->queue)) {
|
||||
GST_DEBUG_OBJECT (vk_download, "No queue retrieved from peer elements");
|
||||
vk_download->queue = _find_graphics_queue (vk_download);
|
||||
}
|
||||
if (!vk_download->queue) {
|
||||
GST_ELEMENT_ERROR (vk_download, RESOURCE, NOT_FOUND,
|
||||
("Failed to create/retrieve vulkan queue"), (NULL));
|
||||
return GST_STATE_CHANGE_FAILURE;
|
||||
}
|
||||
break;
|
||||
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||||
if (ret == GST_STATE_CHANGE_FAILURE)
|
||||
return ret;
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
||||
break;
|
||||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||||
if (vk_download->queue)
|
||||
gst_object_unref (vk_download->queue);
|
||||
vk_download->queue = NULL;
|
||||
if (vk_download->device)
|
||||
gst_object_unref (vk_download->device);
|
||||
vk_download->device = NULL;
|
||||
if (vk_download->instance)
|
||||
gst_object_unref (vk_download->instance);
|
||||
vk_download->instance = NULL;
|
||||
break;
|
||||
case GST_STATE_CHANGE_READY_TO_NULL:
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static GstCaps *
|
||||
gst_vulkan_download_transform_caps (GstBaseTransform * bt,
|
||||
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
|
||||
{
|
||||
GstVulkanDownload *vk_download = GST_VULKAN_DOWNLOAD (bt);
|
||||
GstCaps *result, *tmp;
|
||||
gint i;
|
||||
|
||||
tmp = gst_caps_new_empty ();
|
||||
|
||||
for (i = 0; i < G_N_ELEMENTS (download_methods); i++) {
|
||||
GstCaps *tmp2;
|
||||
GstCaps *templ;
|
||||
|
||||
if (direction == GST_PAD_SINK) {
|
||||
templ = gst_static_caps_get (download_methods[i]->in_template);
|
||||
} else {
|
||||
templ = gst_static_caps_get (download_methods[i]->out_template);
|
||||
}
|
||||
if (!gst_caps_can_intersect (caps, templ)) {
|
||||
gst_caps_unref (templ);
|
||||
continue;
|
||||
}
|
||||
gst_caps_unref (templ);
|
||||
|
||||
tmp2 = download_methods[i]->transform_caps (vk_download->download_impls[i],
|
||||
direction, caps);
|
||||
|
||||
if (tmp2)
|
||||
tmp = gst_caps_merge (tmp, tmp2);
|
||||
}
|
||||
|
||||
if (filter) {
|
||||
result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
|
||||
gst_caps_unref (tmp);
|
||||
} else {
|
||||
result = tmp;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_vulkan_download_set_caps (GstBaseTransform * bt, GstCaps * in_caps,
|
||||
GstCaps * out_caps)
|
||||
{
|
||||
GstVulkanDownload *vk_download = GST_VULKAN_DOWNLOAD (bt);
|
||||
gboolean found_method = FALSE;
|
||||
guint i;
|
||||
|
||||
gst_caps_replace (&vk_download->in_caps, in_caps);
|
||||
gst_caps_replace (&vk_download->out_caps, out_caps);
|
||||
|
||||
for (i = 0; i < G_N_ELEMENTS (download_methods); i++) {
|
||||
GstCaps *templ;
|
||||
|
||||
templ = gst_static_caps_get (download_methods[i]->in_template);
|
||||
if (!gst_caps_can_intersect (in_caps, templ)) {
|
||||
gst_caps_unref (templ);
|
||||
continue;
|
||||
}
|
||||
gst_caps_unref (templ);
|
||||
|
||||
templ = gst_static_caps_get (download_methods[i]->out_template);
|
||||
if (!gst_caps_can_intersect (out_caps, templ)) {
|
||||
gst_caps_unref (templ);
|
||||
continue;
|
||||
}
|
||||
gst_caps_unref (templ);
|
||||
|
||||
if (!download_methods[i]->set_caps (vk_download->download_impls[i], in_caps,
|
||||
out_caps))
|
||||
continue;
|
||||
|
||||
GST_LOG_OBJECT (bt, "downloader %s accepted caps in: %" GST_PTR_FORMAT
|
||||
" out: %" GST_PTR_FORMAT, download_methods[i]->name, in_caps, out_caps);
|
||||
|
||||
vk_download->current_impl = i;
|
||||
found_method = TRUE;
|
||||
break;
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (bt,
|
||||
"set caps in: %" GST_PTR_FORMAT " out: %" GST_PTR_FORMAT, in_caps,
|
||||
out_caps);
|
||||
|
||||
return found_method;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_vulkan_download_propose_allocation (GstBaseTransform * bt,
|
||||
GstQuery * decide_query, GstQuery * query)
|
||||
{
|
||||
GstVulkanDownload *vk_download = GST_VULKAN_DOWNLOAD (bt);
|
||||
guint i;
|
||||
|
||||
for (i = 0; i < G_N_ELEMENTS (download_methods); i++) {
|
||||
GstCaps *templ;
|
||||
|
||||
templ = gst_static_caps_get (download_methods[i]->in_template);
|
||||
if (!gst_caps_can_intersect (vk_download->in_caps, templ)) {
|
||||
gst_caps_unref (templ);
|
||||
continue;
|
||||
}
|
||||
gst_caps_unref (templ);
|
||||
|
||||
templ = gst_static_caps_get (download_methods[i]->out_template);
|
||||
if (!gst_caps_can_intersect (vk_download->out_caps, templ)) {
|
||||
gst_caps_unref (templ);
|
||||
continue;
|
||||
}
|
||||
gst_caps_unref (templ);
|
||||
|
||||
download_methods[i]->propose_allocation (vk_download->download_impls[i],
|
||||
decide_query, query);
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_vulkan_download_decide_allocation (GstBaseTransform * bt, GstQuery * query)
|
||||
{
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
_download_find_method (GstVulkanDownload * vk_download)
|
||||
{
|
||||
vk_download->current_impl++;
|
||||
|
||||
if (vk_download->current_impl >= G_N_ELEMENTS (download_methods))
|
||||
return FALSE;
|
||||
|
||||
GST_DEBUG_OBJECT (vk_download, "attempting download with downloader %s",
|
||||
download_methods[vk_download->current_impl]->name);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_vulkan_download_prepare_output_buffer (GstBaseTransform * bt,
|
||||
GstBuffer * inbuf, GstBuffer ** outbuf)
|
||||
{
|
||||
GstBaseTransformClass *bclass = GST_BASE_TRANSFORM_GET_CLASS (bt);
|
||||
GstVulkanDownload *vk_download = GST_VULKAN_DOWNLOAD (bt);
|
||||
GstFlowReturn ret;
|
||||
|
||||
restart:
|
||||
{
|
||||
gpointer method_impl;
|
||||
const struct DownloadMethod *method;
|
||||
|
||||
method = download_methods[vk_download->current_impl];
|
||||
method_impl = vk_download->download_impls[vk_download->current_impl];
|
||||
|
||||
ret = method->perform (method_impl, inbuf, outbuf);
|
||||
if (ret != GST_FLOW_OK) {
|
||||
next_method:
|
||||
if (!_download_find_method (vk_download)) {
|
||||
GST_ELEMENT_ERROR (bt, RESOURCE, NOT_FOUND,
|
||||
("Could not find suitable downloader"), (NULL));
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
method = download_methods[vk_download->current_impl];
|
||||
method_impl = vk_download->download_impls[vk_download->current_impl];
|
||||
if (!method->set_caps (method_impl, vk_download->in_caps,
|
||||
vk_download->out_caps))
|
||||
/* try the next method */
|
||||
goto next_method;
|
||||
|
||||
/* try the downloading with the next method */
|
||||
goto restart;
|
||||
}
|
||||
}
|
||||
|
||||
if (ret == GST_FLOW_OK) {
|
||||
/* basetransform doesn't unref if they're the same */
|
||||
if (inbuf != *outbuf)
|
||||
bclass->copy_metadata (bt, inbuf, *outbuf);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_vulkan_download_transform (GstBaseTransform * bt, GstBuffer * inbuf,
|
||||
GstBuffer * outbuf)
|
||||
{
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
87
ext/vulkan/vkdownload.h
Normal file
87
ext/vulkan/vkdownload.h
Normal file
|
|
@ -0,0 +1,87 @@
|
|||
/*
|
||||
* GStreamer
|
||||
* Copyright (C) 2019 Matthew Waters <matthew@centricular.com>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
||||
* Boston, MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#ifndef _VK_DOWNLOAD_H_
|
||||
#define _VK_DOWNLOAD_H_
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/video/video.h>
|
||||
#include <gst/vulkan/vulkan.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_TYPE_VULKAN_DOWNLOAD (gst_vulkan_download_get_type())
|
||||
#define GST_VULKAN_DOWNLOAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VULKAN_DOWNLOAD,GstVulkanDownload))
|
||||
#define GST_VULKAN_DOWNLOAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VULKAN_DOWNLOAD,GstVulkanDownloadClass))
|
||||
#define GST_IS_VULKAN_DOWNLOAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VULKAN_DOWNLOAD))
|
||||
#define GST_IS_VULKAN_DOWNLOAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VULKAN_DOWNLOAD))
|
||||
|
||||
typedef struct _GstVulkanDownload GstVulkanDownload;
|
||||
typedef struct _GstVulkanDownloadClass GstVulkanDownloadClass;
|
||||
|
||||
struct DownloadMethod
|
||||
{
|
||||
const gchar *name;
|
||||
|
||||
GstStaticCaps *in_template;
|
||||
GstStaticCaps *out_template;
|
||||
|
||||
gpointer (*new_impl) (GstVulkanDownload * download);
|
||||
GstCaps * (*transform_caps) (gpointer impl,
|
||||
GstPadDirection direction,
|
||||
GstCaps * caps);
|
||||
gboolean (*set_caps) (gpointer impl,
|
||||
GstCaps * in_caps,
|
||||
GstCaps * out_caps);
|
||||
void (*propose_allocation) (gpointer impl,
|
||||
GstQuery * decide_query,
|
||||
GstQuery * query);
|
||||
GstFlowReturn (*perform) (gpointer impl,
|
||||
GstBuffer * buffer,
|
||||
GstBuffer ** outbuf);
|
||||
void (*free) (gpointer impl);
|
||||
};
|
||||
|
||||
struct _GstVulkanDownload
|
||||
{
|
||||
GstBaseTransform parent;
|
||||
|
||||
GstVulkanInstance *instance;
|
||||
GstVulkanDevice *device;
|
||||
GstVulkanQueue *queue;
|
||||
|
||||
GstCaps *in_caps;
|
||||
GstCaps *out_caps;
|
||||
|
||||
/* all impl pointers */
|
||||
gpointer *download_impls;
|
||||
guint current_impl;
|
||||
};
|
||||
|
||||
struct _GstVulkanDownloadClass
|
||||
{
|
||||
GstBaseTransformClass video_sink_class;
|
||||
};
|
||||
|
||||
GType gst_vulkan_download_get_type(void);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue