--- /dev/null
+/*
+ * 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.
+ */
+
+/**
+ * SECTION:element-vulkandownload
+ * @title: vulkandownload
+ *
+ * vulkandownload downloads data into Vulkan memory objects.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "vkdownload.h"
+#include "vktrash.h"
+
+GST_DEBUG_CATEGORY (gst_debug_vulkan_download);
+#define GST_CAT_DEFAULT gst_debug_vulkan_download
+
+static GstCaps *
+_set_caps_features_with_passthrough (const GstCaps * caps,
+ const gchar * feature_name, GstCapsFeatures * passthrough)
+{
+ guint i, j, m, n;
+ GstCaps *tmp;
+
+ tmp = gst_caps_copy (caps);
+
+ n = gst_caps_get_size (caps);
+ for (i = 0; i < n; i++) {
+ GstCapsFeatures *features, *orig_features;
+
+ orig_features = gst_caps_get_features (caps, i);
+ features = gst_caps_features_new (feature_name, NULL);
+
+ m = gst_caps_features_get_size (orig_features);
+ for (j = 0; j < m; j++) {
+ const gchar *feature = gst_caps_features_get_nth (orig_features, j);
+
+ /* if we already have the features */
+ if (gst_caps_features_contains (features, feature))
+ continue;
+
+ if (g_strcmp0 (feature, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY) == 0)
+ continue;
+
+ if (passthrough && gst_caps_features_contains (passthrough, feature)) {
+ gst_caps_features_add (features, feature);
+ }
+ }
+
+ gst_caps_set_features (tmp, i, features);
+ }
+
+ return tmp;
+}
+
+struct ImageToRawDownload
+{
+ GstVulkanDownload *download;
+
+ GstVideoInfo in_info;
+ GstVideoInfo out_info;
+
+ GstBufferPool *pool;
+ gboolean pool_active;
+
+ GstVulkanCommandPool *cmd_pool;
+ GList *trash_list;
+};
+
+static gpointer
+_image_to_raw_new_impl (GstVulkanDownload * download)
+{
+ struct ImageToRawDownload *raw = g_new0 (struct ImageToRawDownload, 1);
+
+ raw->download = download;
+
+ return raw;
+}
+
+static GstCaps *
+_image_to_raw_transform_caps (gpointer impl, GstPadDirection direction,
+ GstCaps * caps)
+{
+ GstCaps *ret;
+
+ if (direction == GST_PAD_SINK) {
+ ret =
+ _set_caps_features_with_passthrough (caps,
+ GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY, NULL);
+ } else {
+ ret =
+ _set_caps_features_with_passthrough (caps,
+ GST_CAPS_FEATURE_MEMORY_VULKAN_IMAGE, NULL);
+ }
+
+ return ret;
+}
+
+static gboolean
+_image_to_raw_set_caps (gpointer impl, GstCaps * in_caps, GstCaps * out_caps)
+{
+ struct ImageToRawDownload *raw = impl;
+
+ if (!gst_video_info_from_caps (&raw->in_info, in_caps))
+ return FALSE;
+
+ if (!gst_video_info_from_caps (&raw->out_info, out_caps))
+ return FALSE;
+
+ return TRUE;
+}
+
+static void
+_image_to_raw_propose_allocation (gpointer impl, GstQuery * decide_query,
+ GstQuery * query)
+{
+ /* FIXME: implement */
+}
+
+static GstFlowReturn
+_image_to_raw_perform (gpointer impl, GstBuffer * inbuf, GstBuffer ** outbuf)
+{
+ struct ImageToRawDownload *raw = impl;
+ VkCommandBuffer cmd;
+ GError *error = NULL;
+ GstFlowReturn ret;
+ VkResult err;
+ int i;
+
+ if (!raw->cmd_pool) {
+ if (!(raw->cmd_pool =
+ gst_vulkan_queue_create_command_pool (raw->download->queue,
+ &error))) {
+ goto error;
+ }
+ }
+
+ if (!(cmd = gst_vulkan_command_pool_create (raw->cmd_pool, &error)))
+ goto error;
+
+ if (!raw->pool) {
+ GstStructure *config;
+ guint min = 0, max = 0;
+ gsize size = 1;
+
+ raw->pool = gst_vulkan_buffer_pool_new (raw->download->device);
+ config = gst_buffer_pool_get_config (raw->pool);
+ gst_buffer_pool_config_set_params (config, raw->download->out_caps, size,
+ min, max);
+ gst_buffer_pool_set_config (raw->pool, config);
+ }
+ if (!raw->pool_active) {
+ gst_buffer_pool_set_active (raw->pool, TRUE);
+ raw->pool_active = TRUE;
+ }
+
+ if ((ret =
+ gst_buffer_pool_acquire_buffer (raw->pool, outbuf,
+ NULL)) != GST_FLOW_OK)
+ goto out;
+
+ {
+ /* *INDENT-OFF* */
+ VkCommandBufferBeginInfo cmd_buf_info = {
+ .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
+ .pNext = NULL,
+ .flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT,
+ .pInheritanceInfo = NULL
+ };
+ /* *INDENT-ON* */
+
+ err = vkBeginCommandBuffer (cmd, &cmd_buf_info);
+ if (gst_vulkan_error_to_g_error (err, &error, "vkBeginCommandBuffer") < 0)
+ return FALSE;
+ }
+
+ for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&raw->out_info); i++) {
+ VkBufferImageCopy region;
+ GstMemory *in_mem, *out_mem;
+ GstVulkanBufferMemory *buf_mem;
+ GstVulkanImageMemory *img_mem;
+ VkImageMemoryBarrier image_memory_barrier;
+ VkBufferMemoryBarrier buffer_memory_barrier;
+
+ in_mem = gst_buffer_peek_memory (inbuf, i);
+ if (!gst_is_vulkan_image_memory (in_mem)) {
+ GST_WARNING_OBJECT (raw->download, "Input is not a GstVulkanImageMemory");
+ goto error;
+ }
+ img_mem = (GstVulkanImageMemory *) in_mem;
+
+ out_mem = gst_buffer_peek_memory (*outbuf, i);
+ if (!gst_is_vulkan_buffer_memory (out_mem)) {
+ GST_WARNING_OBJECT (raw->download,
+ "Output is not a GstVulkanBufferMemory");
+ goto error;
+ }
+ buf_mem = (GstVulkanBufferMemory *) out_mem;
+
+ /* *INDENT-OFF* */
+ region = (VkBufferImageCopy) {
+ .bufferOffset = 0,
+ .bufferRowLength = GST_VIDEO_INFO_COMP_WIDTH (&raw->in_info, i),
+ .bufferImageHeight = GST_VIDEO_INFO_COMP_HEIGHT (&raw->in_info, i),
+ .imageSubresource = {
+ .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
+ .mipLevel = 0,
+ .baseArrayLayer = 0,
+ .layerCount = 1,
+ },
+ .imageOffset = { .x = 0, .y = 0, .z = 0, },
+ .imageExtent = {
+ .width = GST_VIDEO_INFO_COMP_WIDTH (&raw->out_info, i),
+ .height = GST_VIDEO_INFO_COMP_HEIGHT (&raw->out_info, i),
+ .depth = 1,
+ }
+ };
+
+ image_memory_barrier = (VkImageMemoryBarrier) {
+ .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
+ .pNext = NULL,
+ .srcAccessMask = img_mem->barrier.parent.access_flags,
+ .dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT,
+ .oldLayout = img_mem->barrier.image_layout,
+ .newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
+ /* FIXME: implement exclusive transfers */
+ .srcQueueFamilyIndex = 0,
+ .dstQueueFamilyIndex = 0,
+ .image = img_mem->image,
+ .subresourceRange = img_mem->barrier.subresource_range
+ };
+
+ buffer_memory_barrier = (VkBufferMemoryBarrier) {
+ .sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
+ .pNext = NULL,
+ .srcAccessMask = buf_mem->barrier.parent.access_flags,
+ .dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
+ /* FIXME: implement exclusive transfers */
+ .srcQueueFamilyIndex = 0,
+ .dstQueueFamilyIndex = 0,
+ .buffer = buf_mem->buffer,
+ .offset = region.bufferOffset,
+ .size = region.bufferRowLength * region.bufferImageHeight
+ };
+ /* *INDENT-ON* */
+
+ vkCmdPipelineBarrier (cmd,
+ buf_mem->barrier.parent.pipeline_stages | img_mem->barrier.
+ parent.pipeline_stages, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, NULL, 1,
+ &buffer_memory_barrier, 1, &image_memory_barrier);
+
+ buf_mem->barrier.parent.pipeline_stages = VK_PIPELINE_STAGE_TRANSFER_BIT;
+ buf_mem->barrier.parent.access_flags = buffer_memory_barrier.dstAccessMask;
+
+ img_mem->barrier.parent.pipeline_stages = VK_PIPELINE_STAGE_TRANSFER_BIT;
+ img_mem->barrier.parent.access_flags = image_memory_barrier.dstAccessMask;
+ img_mem->barrier.image_layout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
+
+ vkCmdCopyImageToBuffer (cmd, img_mem->image, img_mem->barrier.image_layout,
+ buf_mem->buffer, 1, ®ion);
+ }
+
+ err = vkEndCommandBuffer (cmd);
+ if (gst_vulkan_error_to_g_error (err, &error, "vkEndCommandBuffer") < 0)
+ return FALSE;
+
+ {
+ VkSubmitInfo submit_info = { 0, };
+ VkPipelineStageFlags stages = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
+ GstVulkanFence *fence;
+
+ /* *INDENT-OFF* */
+ submit_info = (VkSubmitInfo) {
+ .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
+ .pNext = NULL,
+ .waitSemaphoreCount = 0,
+ .pWaitSemaphores = NULL,
+ .pWaitDstStageMask = &stages,
+ .commandBufferCount = 1,
+ .pCommandBuffers = &cmd,
+ .signalSemaphoreCount = 0,
+ .pSignalSemaphores = NULL
+ };
+ /* *INDENT-ON* */
+
+ fence = gst_vulkan_fence_new (raw->download->device, 0, &error);
+ if (!fence)
+ goto error;
+
+ err =
+ vkQueueSubmit (raw->download->queue->queue, 1, &submit_info,
+ GST_VULKAN_FENCE_FENCE (fence));
+ if (gst_vulkan_error_to_g_error (err, &error, "vkQueueSubmit") < 0)
+ goto error;
+
+ raw->trash_list = g_list_prepend (raw->trash_list,
+ gst_vulkan_trash_new_free_command_buffer (fence, raw->cmd_pool, cmd));
+ }
+
+ /* XXX: STALL!
+ * Need to have the buffer gst_memory_map() wait for this fence before
+ * allowing access */
+ gst_vulkan_trash_list_wait (raw->trash_list, -1);
+ raw->trash_list = NULL;
+
+ ret = GST_FLOW_OK;
+
+out:
+ return ret;
+
+error:
+ if (error) {
+ GST_WARNING_OBJECT (raw->download, "Error: %s", error->message);
+ g_clear_error (&error);
+ }
+ gst_buffer_unref (*outbuf);
+ *outbuf = NULL;
+ ret = GST_FLOW_ERROR;
+ goto out;
+ return GST_FLOW_OK;
+}
+
+static void
+_image_to_raw_free (gpointer impl)
+{
+ struct ImageToRawDownload *raw = impl;
+
+ if (raw->pool) {
+ if (raw->pool_active) {
+ gst_buffer_pool_set_active (raw->pool, FALSE);
+ }
+ raw->pool_active = FALSE;
+ gst_object_unref (raw->pool);
+ raw->pool = NULL;
+ }
+
+ if (raw->cmd_pool) {
+ gst_object_unref (raw->cmd_pool);
+ raw->cmd_pool = NULL;
+ }
+
+ g_free (impl);
+}
+
+static GstStaticCaps _image_to_raw_in_templ =
+GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_VULKAN_IMAGE ")");
+static GstStaticCaps _image_to_raw_out_templ = GST_STATIC_CAPS ("video/x-raw");
+
+static const struct DownloadMethod image_to_raw_download = {
+ "VulkanImageToRaw",
+ &_image_to_raw_in_templ,
+ &_image_to_raw_out_templ,
+ _image_to_raw_new_impl,
+ _image_to_raw_transform_caps,
+ _image_to_raw_set_caps,
+ _image_to_raw_propose_allocation,
+ _image_to_raw_perform,
+ _image_to_raw_free,
+};
+
+static const struct DownloadMethod *download_methods[] = {
+ &image_to_raw_download,
+};
+
+static GstCaps *
+_get_input_template_caps (void)
+{
+ GstCaps *ret = NULL;
+ gint i;
+
+ /* FIXME: cache this and invalidate on changes to download_methods */
+ for (i = 0; i < G_N_ELEMENTS (download_methods); i++) {
+ GstCaps *template = gst_static_caps_get (download_methods[i]->in_template);
+ ret = ret == NULL ? template : gst_caps_merge (ret, template);
+ }
+
+ ret = gst_caps_simplify (ret);
+
+ return ret;
+}
+
+static GstCaps *
+_get_output_template_caps (void)
+{
+ GstCaps *ret = NULL;
+ gint i;
+
+ /* FIXME: cache this and invalidate on changes to download_methods */
+ for (i = 0; i < G_N_ELEMENTS (download_methods); i++) {
+ GstCaps *template = gst_static_caps_get (download_methods[i]->out_template);
+ ret = ret == NULL ? template : gst_caps_merge (ret, template);
+ }
+
+ ret = gst_caps_simplify (ret);
+
+ return ret;
+}
+
+static void gst_vulkan_download_finalize (GObject * object);
+
+static gboolean gst_vulkan_download_query (GstBaseTransform * bt,
+ GstPadDirection direction, GstQuery * query);
+static void gst_vulkan_download_set_context (GstElement * element,
+ GstContext * context);
+static GstStateChangeReturn gst_vulkan_download_change_state (GstElement *
+ element, GstStateChange transition);
+
+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;
+}
projects / platform / upstream / gstreamer.git / commitdiff