vulkan: Add vulkan-blit-filter

spa/include/spa/utils/names.h

@@ -134,6 +134,8 @@ extern "C" {
 					"api.vulkan.compute.source"	/**< a vulkan compute source. */
 #define SPA_NAME_API_VULKAN_COMPUTE_FILTER	\
 					"api.vulkan.compute.filter"	/**< a vulkan compute filter. */
+#define SPA_NAME_API_VULKAN_BLIT_FILTER	\
+					"api.vulkan.blit.filter"	/**< a vulkan blit filter. */
 
 /**
  * \}

spa/plugins/vulkan/meson.build

@@ -4,6 +4,7 @@ spa_vulkan_sources = [
   'vulkan-compute-filter.c',
   'vulkan-compute-source.c',
   'vulkan-compute-utils.c',
+  'vulkan-blit-filter.c',
   'vulkan-blit-utils.c',
   'vulkan-utils.c',
   'utils.c',

spa/plugins/vulkan/plugin.c

@@ -8,6 +8,7 @@
 
 extern const struct spa_handle_factory spa_vulkan_compute_filter_factory;
 extern const struct spa_handle_factory spa_vulkan_compute_source_factory;
+extern const struct spa_handle_factory spa_vulkan_blit_filter_factory;
 
 SPA_EXPORT
 int spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t *index)
@@ -22,6 +23,9 @@ int spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t
 	case 1:
 		*factory = &spa_vulkan_compute_filter_factory;
 		break;
+	case 2:
+		*factory = &spa_vulkan_blit_filter_factory;
+		break;
 	default:
 		return 0;
 	}

spa/plugins/vulkan/vulkan-blit-filter.c

@@ -0,0 +1,997 @@
+/* Spa */
+/* SPDX-FileCopyrightText: Copyright © 2019 Wim Taymans */
+/* SPDX-FileCopyrightText: Copyright © 2023 columbarius */
+/* SPDX-License-Identifier: MIT */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <spa/support/plugin.h>
+#include <spa/support/log.h>
+#include <spa/support/loop.h>
+#include <spa/utils/list.h>
+#include <spa/utils/keys.h>
+#include <spa/utils/names.h>
+#include <spa/utils/string.h>
+#include <spa/node/node.h>
+#include <spa/node/utils.h>
+#include <spa/node/io.h>
+#include <spa/node/keys.h>
+#include <spa/param/video/format-utils.h>
+#include <spa/param/param.h>
+#include <spa/pod/filter.h>
+
+#include "pixel-formats.h"
+#include "vulkan-blit-utils.h"
+
+#undef SPA_LOG_TOPIC_DEFAULT
+#define SPA_LOG_TOPIC_DEFAULT &log_topic
+SPA_LOG_TOPIC_DEFINE_STATIC(log_topic, "spa.vulkan.blit-filter");
+
+struct buffer {
+	uint32_t id;
+#define BUFFER_FLAG_OUT (1<<0)
+	uint32_t flags;
+	struct spa_buffer *outbuf;
+	struct spa_meta_header *h;
+	struct spa_list link;
+};
+
+struct port {
+	uint64_t info_all;
+	struct spa_port_info info;
+
+	enum spa_direction direction;
+	struct spa_param_info params[5];
+
+	struct spa_io_buffers *io;
+
+	bool have_format;
+	struct spa_video_info current_format;
+
+	struct buffer buffers[MAX_BUFFERS];
+	uint32_t n_buffers;
+
+	struct spa_list empty;
+	struct spa_list ready;
+	uint32_t stream_id;
+};
+
+struct impl {
+	struct spa_handle handle;
+	struct spa_node node;
+
+	struct spa_log *log;
+
+	struct spa_io_position *position;
+
+	uint64_t info_all;
+	struct spa_node_info info;
+	struct spa_param_info params[2];
+
+	struct spa_hook_list hooks;
+	struct spa_callbacks callbacks;
+
+	bool started;
+
+	struct vulkan_blit_state state;
+	struct port port[2];
+};
+
+#define CHECK_PORT(this,d,p)  ((p) < 1)
+
+static int impl_node_enum_params(void *object, int seq,
+				 uint32_t id, uint32_t start, uint32_t num,
+				 const struct spa_pod *filter)
+{
+	struct impl *this = object;
+	struct spa_pod *param;
+	struct spa_pod_builder b = { 0 };
+	uint8_t buffer[1024];
+	struct spa_result_node_params result;
+	uint32_t count = 0;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+	spa_return_val_if_fail(num != 0, -EINVAL);
+
+	result.id = id;
+	result.next = start;
+      next:
+	result.index = result.next++;
+
+	spa_pod_builder_init(&b, buffer, sizeof(buffer));
+
+	switch (id) {
+	default:
+		return -ENOENT;
+	}
+
+	if (spa_pod_filter(&b, &result.param, param, filter) < 0)
+		goto next;
+
+	spa_node_emit_result(&this->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result);
+
+	if (++count != num)
+		goto next;
+
+	return 0;
+}
+
+static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size)
+{
+	struct impl *this = object;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+
+	switch (id) {
+	case SPA_IO_Position:
+		if (size > 0 && size < sizeof(struct spa_io_position))
+			return -EINVAL;
+		this->position = data;
+		break;
+	default:
+		return -ENOENT;
+	}
+	return 0;
+}
+static int impl_node_set_param(void *object, uint32_t id, uint32_t flags,
+			       const struct spa_pod *param)
+{
+	struct impl *this = object;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+
+	switch (id) {
+	default:
+		return -ENOENT;
+	}
+	return 0;
+}
+
+static inline void reuse_buffer(struct impl *this, struct port *port, uint32_t id)
+{
+	struct buffer *b = &port->buffers[id];
+
+	if (SPA_FLAG_IS_SET(b->flags, BUFFER_FLAG_OUT)) {
+		spa_log_debug(this->log, "%p: reuse buffer %d", this, id);
+
+		SPA_FLAG_CLEAR(b->flags, BUFFER_FLAG_OUT);
+		spa_list_append(&port->empty, &b->link);
+	}
+}
+
+static int impl_node_send_command(void *object, const struct spa_command *command)
+{
+	struct impl *this = object;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+	spa_return_val_if_fail(command != NULL, -EINVAL);
+
+	switch (SPA_NODE_COMMAND_ID(command)) {
+	case SPA_NODE_COMMAND_Start:
+		if (this->started)
+			return 0;
+
+		this->started = true;
+		spa_vulkan_blit_start(&this->state);
+		break;
+
+	case SPA_NODE_COMMAND_Suspend:
+	case SPA_NODE_COMMAND_Pause:
+		if (!this->started)
+			return 0;
+
+		this->started = false;
+		spa_vulkan_blit_stop(&this->state);
+		break;
+	default:
+		return -ENOTSUP;
+	}
+	return 0;
+}
+
+static const struct spa_dict_item node_info_items[] = {
+	{ SPA_KEY_MEDIA_CLASS, "Video/Filter" },
+};
+
+static void emit_node_info(struct impl *this, bool full)
+{
+	uint64_t old = full ? this->info.change_mask : 0;
+	if (full)
+		this->info.change_mask = this->info_all;
+	if (this->info.change_mask) {
+		this->info.props = &SPA_DICT_INIT_ARRAY(node_info_items);
+		spa_node_emit_info(&this->hooks, &this->info);
+		this->info.change_mask = old;
+	}
+}
+
+static void emit_port_info(struct impl *this, struct port *port, bool full)
+{
+	uint64_t old = full ? port->info.change_mask : 0;
+	if (full)
+		port->info.change_mask = port->info_all;
+	if (port->info.change_mask) {
+		struct spa_dict_item items[1];
+
+		items[0] = SPA_DICT_ITEM_INIT(SPA_KEY_FORMAT_DSP, "32 bit float RGBA video");
+		port->info.props = &SPA_DICT_INIT(items, 1);
+		spa_node_emit_port_info(&this->hooks,
+				port->direction, 0, &port->info);
+		port->info.change_mask = old;
+	}
+}
+
+static int
+impl_node_add_listener(void *object,
+		struct spa_hook *listener,
+		const struct spa_node_events *events,
+		void *data)
+{
+	struct impl *this = object;
+	struct spa_hook_list save;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+
+	spa_hook_list_isolate(&this->hooks, &save, listener, events, data);
+
+	emit_node_info(this, true);
+	emit_port_info(this, &this->port[0], true);
+	emit_port_info(this, &this->port[1], true);
+
+	spa_hook_list_join(&this->hooks, &save);
+
+	return 0;
+}
+
+static int
+impl_node_set_callbacks(void *object,
+			const struct spa_node_callbacks *callbacks,
+			void *data)
+{
+	struct impl *this = object;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+
+	this->callbacks = SPA_CALLBACKS_INIT(callbacks, data);
+
+	return 0;
+}
+
+static int impl_node_add_port(void *object, enum spa_direction direction, uint32_t port_id,
+		const struct spa_dict *props)
+{
+	return -ENOTSUP;
+}
+
+static int
+impl_node_remove_port(void *object, enum spa_direction direction, uint32_t port_id)
+{
+	return -ENOTSUP;
+}
+
+static bool port_has_fixated_format(struct port *p)
+{
+	if (!p->have_format)
+		return false;
+	switch (p->current_format.media_subtype) {
+	case SPA_MEDIA_SUBTYPE_dsp:
+		return p->current_format.info.dsp.flags & SPA_VIDEO_FLAG_MODIFIER
+			&& p->current_format.info.dsp.flags ^ SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED;
+	case SPA_MEDIA_SUBTYPE_raw:
+		return p->current_format.info.raw.flags & SPA_VIDEO_FLAG_MODIFIER
+			&& p->current_format.info.raw.flags ^ SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED;
+	}
+	return false;
+}
+
+static int port_enum_formats(void *object,
+			     enum spa_direction direction, uint32_t port_id,
+			     uint32_t index,
+			     const struct spa_pod *filter,
+			     struct spa_pod **param,
+			     struct spa_pod_builder *builder)
+{
+	struct impl *this = object;
+
+	if (port_has_fixated_format(&this->port[port_id])) {
+		if (index == 0) {
+			if (this->port[port_id].current_format.media_subtype == SPA_MEDIA_SUBTYPE_dsp) {
+				spa_log_info(this->log, "enum_formats fixated format idx: %d, format %d, has_modifier 1",
+						index, this->port[port_id].current_format.info.dsp.format);
+				*param = spa_format_video_dsp_build(builder, SPA_PARAM_EnumFormat, &this->port[port_id].current_format.info.dsp);
+			} else {
+				spa_log_info(this->log, "enum_formats fixated format idx: %d, format %d, has_modifier 1",
+						index, this->port[port_id].current_format.info.raw.format);
+				*param = spa_format_video_raw_build(builder, SPA_PARAM_EnumFormat, &this->port[port_id].current_format.info.raw);
+			}
+			return 1;
+		}
+		return spa_vulkan_blit_enumerate_formats(&this->state, index-1, spa_vulkan_blit_get_buffer_caps(&this->state, direction), param, builder);
+	} else {
+		return spa_vulkan_blit_enumerate_formats(&this->state, index, spa_vulkan_blit_get_buffer_caps(&this->state, direction), param, builder);
+	}
+}
+
+static int port_get_buffer_props(struct impl *this, struct port *port,
+		uint32_t *blocks, uint32_t *size, uint32_t *stride, bool *is_dmabuf)
+{
+	if (port->current_format.media_subtype == SPA_MEDIA_SUBTYPE_dsp) {
+		if (this->position == NULL)
+			return -EIO;
+
+		spa_log_debug(this->log, "%p: %dx%d stride %d", this,
+				this->position->video.size.width,
+				this->position->video.size.height,
+				this->position->video.stride);
+
+		if (port->current_format.info.dsp.flags & SPA_VIDEO_FLAG_MODIFIER) {
+			*is_dmabuf = true;
+
+			struct vulkan_modifier_info *mod_info = spa_vulkan_blit_get_modifier_info(&this->state,
+				&port->current_format);
+			*blocks = mod_info->props.drmFormatModifierPlaneCount;
+		} else {
+			*is_dmabuf = false;
+			*blocks = 1;
+			*size = this->position->video.stride * this->position->video.size.height;
+			*stride = this->position->video.stride;
+		}
+		return 0;
+	} else if (port->current_format.media_subtype == SPA_MEDIA_SUBTYPE_raw) {
+		spa_log_debug(this->log, "%p: %dx%d", this,
+				port->current_format.info.raw.size.width,
+				port->current_format.info.raw.size.height);
+
+		if (port->current_format.info.raw.flags & SPA_VIDEO_FLAG_MODIFIER) {
+			*is_dmabuf = true;
+
+			struct vulkan_modifier_info *mod_info = spa_vulkan_blit_get_modifier_info(&this->state,
+				&port->current_format);
+			*blocks = mod_info->props.drmFormatModifierPlaneCount;
+		} else {
+			struct pixel_format_info pInfo = {0};
+			if (!get_pixel_format_info(port->current_format.info.raw.format, &pInfo))
+				return -EINVAL;
+			uint32_t buffer_stride = pInfo.bpp * port->current_format.info.raw.size.width;
+			*is_dmabuf = false;
+			*blocks = 1;
+			*size = buffer_stride * port->current_format.info.raw.size.height;
+			*stride = buffer_stride;
+		}
+		return 0;
+	} else {
+		return -EINVAL;
+	}
+}
+
+static int
+impl_node_port_enum_params(void *object, int seq,
+			enum spa_direction direction, uint32_t port_id,
+			uint32_t id, uint32_t start, uint32_t num,
+			const struct spa_pod *filter)
+{
+	struct impl *this = object;
+	struct port *port;
+	struct spa_pod_builder b = { 0 };
+	uint8_t buffer[1024];
+	struct spa_pod *param;
+	struct spa_result_node_params result;
+	uint32_t count = 0;
+	int res;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+	spa_return_val_if_fail(num != 0, -EINVAL);
+
+	spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+	port = &this->port[direction];
+
+	result.id = id;
+	result.next = start;
+      next:
+	result.index = result.next++;
+
+	spa_pod_builder_init(&b, buffer, sizeof(buffer));
+
+	switch (id) {
+	case SPA_PARAM_EnumFormat:
+		if ((res = port_enum_formats(this, direction, port_id,
+						result.index, filter, &param, &b)) <= 0)
+			return res;
+		break;
+
+	case SPA_PARAM_Format:
+		if (!port->have_format)
+			return -EIO;
+		if (result.index > 0)
+			return 0;
+
+		if (port->current_format.media_subtype == SPA_MEDIA_SUBTYPE_dsp) {
+			param = spa_format_video_dsp_build(&b, id, &port->current_format.info.dsp);
+		} else if (port->current_format.media_subtype == SPA_MEDIA_SUBTYPE_raw) {
+			param = spa_format_video_raw_build(&b, id, &port->current_format.info.raw);
+		} else {
+			return -EINVAL;
+		}
+		break;
+
+	case SPA_PARAM_Buffers:
+	{
+		if (!port->have_format)
+			return -EIO;
+		if (result.index > 0)
+			return 0;
+
+		int ret;
+		uint32_t blocks, size, stride;
+		bool is_dmabuf;
+
+		if ((ret = port_get_buffer_props(this, port, &blocks, &size, &stride, &is_dmabuf)) < 0)
+			return ret;
+
+		if (is_dmabuf) {
+			param = spa_pod_builder_add_object(&b,
+				SPA_TYPE_OBJECT_ParamBuffers, id,
+				SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(2, 1, MAX_BUFFERS),
+				SPA_PARAM_BUFFERS_blocks,  SPA_POD_Int(blocks),
+				SPA_PARAM_BUFFERS_dataType, SPA_POD_CHOICE_FLAGS_Int(1<<SPA_DATA_DmaBuf));
+		} else {
+			param = spa_pod_builder_add_object(&b,
+				SPA_TYPE_OBJECT_ParamBuffers, id,
+				SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(2, 1, MAX_BUFFERS),
+				SPA_PARAM_BUFFERS_blocks,  SPA_POD_Int(blocks),
+				SPA_PARAM_BUFFERS_size,  SPA_POD_Int(size),
+				SPA_PARAM_BUFFERS_stride,  SPA_POD_Int(stride),
+				SPA_PARAM_BUFFERS_dataType, SPA_POD_CHOICE_FLAGS_Int(1<<SPA_DATA_MemPtr));
+		}
+
+		break;
+	}
+	case SPA_PARAM_Meta:
+		switch (result.index) {
+		case 0:
+			param = spa_pod_builder_add_object(&b,
+				SPA_TYPE_OBJECT_ParamMeta, id,
+				SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Header),
+				SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_header)));
+			break;
+
+		default:
+			return 0;
+		}
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	if (spa_pod_filter(&b, &result.param, param, filter) < 0)
+		goto next;
+
+	spa_node_emit_result(&this->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result);
+
+	if (++count != num)
+		goto next;
+
+	return 0;
+}
+
+static int clear_buffers(struct impl *this, struct port *port)
+{
+	if (port->n_buffers > 0) {
+		spa_log_debug(this->log, "%p: clear buffers", this);
+		spa_vulkan_blit_stop(&this->state);
+		spa_vulkan_blit_use_buffers(&this->state, &this->state.streams[port->stream_id], 0, &port->current_format, 0, NULL);
+		port->n_buffers = 0;
+		spa_list_init(&port->empty);
+		spa_list_init(&port->ready);
+		this->started = false;
+	}
+	return 0;
+}
+
+static int port_set_dsp_format(struct impl *this, struct port *port,
+			   uint32_t flags, struct spa_video_info *info,
+			   bool *has_modifier, bool *modifier_fixed,
+			   const struct spa_pod *format)
+{
+		if (spa_format_video_dsp_parse(format, &info->info.dsp) < 0)
+			return -EINVAL;
+
+		if (info->info.dsp.format != SPA_VIDEO_FORMAT_DSP_F32)
+			return -EINVAL;
+
+		this->state.streams[port->stream_id].dim.width = this->position->video.size.width;
+		this->state.streams[port->stream_id].dim.height = this->position->video.size.height;
+		this->state.streams[port->stream_id].bpp = 16;
+		*has_modifier = SPA_FLAG_IS_SET(info->info.dsp.flags, SPA_VIDEO_FLAG_MODIFIER);
+
+		// fixate modifier
+		if (port->direction == SPA_DIRECTION_OUTPUT
+				&& info->info.dsp.flags & SPA_VIDEO_FLAG_MODIFIER
+				&& info->info.dsp.flags & SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED) {
+			const struct spa_pod_prop *mod_prop;
+			if ((mod_prop = spa_pod_find_prop(format, NULL, SPA_FORMAT_VIDEO_modifier)) == NULL)
+				return -EINVAL;
+
+			const struct spa_pod *mod_pod = &mod_prop->value;
+			uint32_t modifierCount = SPA_POD_CHOICE_N_VALUES(mod_pod);
+			uint64_t *modifiers = SPA_POD_CHOICE_VALUES(mod_pod);
+			if (modifierCount <= 1)
+				return -EINVAL;
+			// SPA_POD_CHOICE carries the "preferred" value at position 0
+			modifierCount -= 1;
+			modifiers++;
+			uint64_t fixed_modifier;
+			if (spa_vulkan_blit_fixate_modifier(&this->state, &this->state.streams[port->stream_id], info, modifierCount, modifiers, &fixed_modifier) != 0)
+				return -EINVAL;
+
+			spa_log_info(this->log, "modifier fixated %"PRIu64, fixed_modifier);
+
+			info->info.dsp.modifier = fixed_modifier;
+			info->info.dsp.flags &= ~SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED;
+			*modifier_fixed = true;
+		}
+
+	return 0;
+}
+
+static int port_set_raw_format(struct impl *this, struct port *port,
+			   uint32_t flags, struct spa_video_info *info,
+			   bool *has_modifier, bool *modifier_fixed,
+			   const struct spa_pod *format)
+{
+		if (spa_format_video_raw_parse(format, &info->info.raw) < 0)
+			return -EINVAL;
+
+		struct pixel_format_info pInfo;
+		if (!get_pixel_format_info(info->info.raw.format, &pInfo))
+			return -EINVAL;
+		this->state.streams[port->stream_id].dim = info->info.raw.size;
+		this->state.streams[port->stream_id].bpp = pInfo.bpp;
+		*has_modifier = SPA_FLAG_IS_SET(info->info.raw.flags, SPA_VIDEO_FLAG_MODIFIER);
+
+		// fixate modifier
+		if (port->direction == SPA_DIRECTION_OUTPUT
+				&& info->info.raw.flags & SPA_VIDEO_FLAG_MODIFIER
+				&& info->info.raw.flags & SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED) {
+			const struct spa_pod_prop *mod_prop;
+			if ((mod_prop = spa_pod_find_prop(format, NULL, SPA_FORMAT_VIDEO_modifier)) == NULL)
+				return -EINVAL;
+
+			const struct spa_pod *mod_pod = &mod_prop->value;
+			uint32_t modifierCount = SPA_POD_CHOICE_N_VALUES(mod_pod);
+			uint64_t *modifiers = SPA_POD_CHOICE_VALUES(mod_pod);
+			if (modifierCount <= 1)
+				return -EINVAL;
+			// SPA_POD_CHOICE carries the "preferred" value at position 0
+			modifierCount -= 1;
+			modifiers++;
+			uint64_t fixed_modifier;
+			if (spa_vulkan_blit_fixate_modifier(&this->state, &this->state.streams[port->stream_id], info, modifierCount, modifiers, &fixed_modifier) != 0)
+				return -EINVAL;
+
+			spa_log_info(this->log, "modifier fixated %"PRIu64, fixed_modifier);
+
+			info->info.raw.modifier = fixed_modifier;
+			info->info.raw.flags &= ~SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED;
+			*modifier_fixed = true;
+		}
+
+	return 0;
+}
+
+static int port_set_format(struct impl *this, struct port *port,
+			   uint32_t flags,
+			   const struct spa_pod *format)
+{
+	int res;
+
+	if (format == NULL) {
+		port->have_format = false;
+		clear_buffers(this, port);
+		spa_vulkan_blit_unprepare(&this->state);
+	} else {
+		struct spa_video_info info = { 0 };
+
+		if ((res = spa_format_parse(format, &info.media_type, &info.media_subtype)) < 0)
+			return res;
+
+		if (info.media_type != SPA_MEDIA_TYPE_video)
+			return -EINVAL;
+
+		bool has_modifier = false;
+		bool modifier_fixed = false;
+		if (info.media_subtype == SPA_MEDIA_SUBTYPE_dsp) {
+			if ((res = port_set_dsp_format(this, port, flags, &info, &has_modifier, &modifier_fixed, format)) < 0)
+				return res;
+		} else if (info.media_subtype == SPA_MEDIA_SUBTYPE_raw) {
+			if ((res = port_set_raw_format(this, port, flags, &info, &has_modifier, &modifier_fixed, format)) < 0)
+				return res;
+		} else {
+			return -EINVAL;
+		}
+
+		if (has_modifier) {
+			SPA_FLAG_SET(port->info.flags, SPA_PORT_FLAG_CAN_ALLOC_BUFFERS);
+		} else {
+			SPA_FLAG_CLEAR(port->info.flags, SPA_PORT_FLAG_CAN_ALLOC_BUFFERS);
+		}
+		port->info.change_mask |= SPA_PORT_CHANGE_MASK_FLAGS;
+
+		port->current_format = info;
+		port->have_format = true;
+
+		if (modifier_fixed) {
+			port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
+			port->params[0].flags ^= SPA_PARAM_INFO_SERIAL;
+			emit_port_info(this, port, false);
+			return 0;
+		}
+	}
+
+	port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
+	if (port->have_format) {
+		port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE);
+		port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, SPA_PARAM_INFO_READ);
+	} else {
+		port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+		port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+	}
+	emit_port_info(this, port, false);
+
+	return 0;
+}
+
+static int
+impl_node_port_set_param(void *object,
+			 enum spa_direction direction, uint32_t port_id,
+			 uint32_t id, uint32_t flags,
+			 const struct spa_pod *param)
+{
+	struct impl *this = object;
+	struct port *port;
+	int res;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+	spa_return_val_if_fail(CHECK_PORT(node, direction, port_id), -EINVAL);
+	port = &this->port[direction];
+
+	switch (id) {
+	case SPA_PARAM_Format:
+		res = port_set_format(this, port, flags, param);
+		break;
+	default:
+		return -ENOENT;
+	}
+	return res;
+}
+
+static int
+impl_node_port_use_buffers(void *object,
+			   enum spa_direction direction,
+			   uint32_t port_id,
+			   uint32_t flags,
+			   struct spa_buffer **buffers,
+			   uint32_t n_buffers)
+{
+	struct impl *this = object;
+	struct port *port;
+	uint32_t i;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+	spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+	port = &this->port[direction];
+
+	clear_buffers(this, port);
+
+	if (n_buffers > 0 && !port->have_format)
+		return -EIO;
+	if (n_buffers > MAX_BUFFERS)
+		return -ENOSPC;
+
+	for (i = 0; i < n_buffers; i++) {
+		struct buffer *b;
+
+		b = &port->buffers[i];
+		b->id = i;
+		b->outbuf = buffers[i];
+		b->flags = 0;
+		b->h = spa_buffer_find_meta_data(buffers[i], SPA_META_Header, sizeof(*b->h));
+
+		spa_log_info(this->log, "%p: %d:%d add buffer %p", port, direction, port_id, b);
+		spa_list_append(&port->empty, &b->link);
+	}
+	spa_vulkan_blit_use_buffers(&this->state, &this->state.streams[port->stream_id], flags, &port->current_format, n_buffers, buffers);
+	port->n_buffers = n_buffers;
+
+	return 0;
+}
+
+static int
+impl_node_port_set_io(void *object,
+		      enum spa_direction direction,
+		      uint32_t port_id,
+		      uint32_t id,
+		      void *data, size_t size)
+{
+	struct impl *this = object;
+	struct port *port;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+	spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+	port = &this->port[direction];
+
+	switch (id) {
+	case SPA_IO_Buffers:
+		port->io = data;
+		break;
+	default:
+		return -ENOENT;
+	}
+	return 0;
+}
+
+static int impl_node_port_reuse_buffer(void *object, uint32_t port_id, uint32_t buffer_id)
+{
+	struct impl *this = object;
+	struct port *port;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+	spa_return_val_if_fail(port_id == 0, -EINVAL);
+
+	port = &this->port[SPA_DIRECTION_OUTPUT];
+	spa_return_val_if_fail(buffer_id < port->n_buffers, -EINVAL);
+
+	reuse_buffer(this, port, buffer_id);
+
+	return 0;
+}
+
+static int impl_node_process(void *object)
+{
+	struct impl *this = object;
+	struct port *inport, *outport;
+	struct spa_io_buffers *inio, *outio;
+	struct buffer *b;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+
+	inport = &this->port[SPA_DIRECTION_INPUT];
+	if ((inio = inport->io) == NULL)
+		return -EIO;
+
+	if (inio->status != SPA_STATUS_HAVE_DATA)
+		return inio->status;
+
+	if (inio->buffer_id >= inport->n_buffers) {
+		inio->status = -EINVAL;
+		return -EINVAL;
+	}
+
+	outport = &this->port[SPA_DIRECTION_OUTPUT];
+	if ((outio = outport->io) == NULL)
+		return -EIO;
+
+	if (outio->status == SPA_STATUS_HAVE_DATA)
+		return SPA_STATUS_HAVE_DATA;
+
+	if (outio->buffer_id < outport->n_buffers) {
+		reuse_buffer(this, outport, outio->buffer_id);
+		outio->buffer_id = SPA_ID_INVALID;
+	}
+
+	if (spa_list_is_empty(&outport->empty)) {
+		spa_log_debug(this->log, "%p: out of buffers", this);
+		return -EPIPE;
+	}
+	b = &inport->buffers[inio->buffer_id];
+	this->state.streams[inport->stream_id].pending_buffer_id = b->id;
+	inio->status = SPA_STATUS_NEED_DATA;
+
+	b = spa_list_first(&outport->empty, struct buffer, link);
+	spa_list_remove(&b->link);
+	SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUT);
+	this->state.streams[outport->stream_id].pending_buffer_id = b->id;
+
+	spa_log_debug(this->log, "filter into %d", b->id);
+
+	spa_vulkan_blit_process(&this->state);
+
+	b->outbuf->datas[0].chunk->offset = 0;
+	b->outbuf->datas[0].chunk->size = b->outbuf->datas[0].maxsize;
+	if (outport->current_format.media_subtype == SPA_MEDIA_SUBTYPE_raw) {
+		b->outbuf->datas[0].chunk->stride =
+			this->state.streams[outport->stream_id].bpp * outport->current_format.info.raw.size.width;
+	} else {
+		b->outbuf->datas[0].chunk->stride = this->position->video.stride;
+	}
+
+	outio->buffer_id = b->id;
+	outio->status = SPA_STATUS_HAVE_DATA;
+
+	return SPA_STATUS_NEED_DATA | SPA_STATUS_HAVE_DATA;
+}
+
+static const struct spa_node_methods impl_node = {
+	SPA_VERSION_NODE_METHODS,
+	.add_listener = impl_node_add_listener,
+	.set_callbacks = impl_node_set_callbacks,
+	.enum_params = impl_node_enum_params,
+	.set_param = impl_node_set_param,
+	.set_io = impl_node_set_io,
+	.send_command = impl_node_send_command,
+	.add_port = impl_node_add_port,
+	.remove_port = impl_node_remove_port,
+	.port_enum_params = impl_node_port_enum_params,
+	.port_set_param = impl_node_port_set_param,
+	.port_use_buffers = impl_node_port_use_buffers,
+	.port_set_io = impl_node_port_set_io,
+	.port_reuse_buffer = impl_node_port_reuse_buffer,
+	.process = impl_node_process,
+};
+
+static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface)
+{
+	struct impl *this;
+
+	spa_return_val_if_fail(handle != NULL, -EINVAL);
+	spa_return_val_if_fail(interface != NULL, -EINVAL);
+
+	this = (struct impl *) handle;
+
+	if (spa_streq(type, SPA_TYPE_INTERFACE_Node))
+		*interface = &this->node;
+	else
+		return -ENOENT;
+
+	return 0;
+}
+
+static int impl_clear(struct spa_handle *handle)
+{
+	struct impl *this;
+
+	spa_return_val_if_fail(handle != NULL, -EINVAL);
+
+	this = (struct impl *) handle;
+
+	spa_vulkan_blit_deinit(&this->state);
+	return 0;
+}
+
+static size_t
+impl_get_size(const struct spa_handle_factory *factory,
+	      const struct spa_dict *params)
+{
+	return sizeof(struct impl);
+}
+
+static int
+impl_init(const struct spa_handle_factory *factory,
+	  struct spa_handle *handle,
+	  const struct spa_dict *info,
+	  const struct spa_support *support,
+	  uint32_t n_support)
+{
+	struct impl *this;
+	struct port *port;
+
+	spa_return_val_if_fail(factory != NULL, -EINVAL);
+	spa_return_val_if_fail(handle != NULL, -EINVAL);
+
+	handle->get_interface = impl_get_interface;
+	handle->clear = impl_clear;
+
+	this = (struct impl *) handle;
+
+	this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log);
+	this->state.log = this->log;
+
+	spa_hook_list_init(&this->hooks);
+
+	this->node.iface = SPA_INTERFACE_INIT(
+			SPA_TYPE_INTERFACE_Node,
+			SPA_VERSION_NODE,
+			&impl_node, this);
+
+	this->info_all = SPA_NODE_CHANGE_MASK_FLAGS |
+			SPA_NODE_CHANGE_MASK_PROPS |
+			SPA_NODE_CHANGE_MASK_PARAMS;
+	this->info = SPA_NODE_INFO_INIT();
+	this->info.max_output_ports = 1;
+	this->info.max_input_ports = 1;
+	this->info.flags = SPA_NODE_FLAG_RT;
+	this->params[0] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ);
+	this->params[1] = SPA_PARAM_INFO(SPA_PARAM_Props, SPA_PARAM_INFO_READWRITE);
+	this->info.params = this->params;
+	this->info.n_params = 2;
+
+	port = &this->port[SPA_DIRECTION_INPUT];
+	port->stream_id = SPA_DIRECTION_INPUT;
+	port->direction = SPA_DIRECTION_INPUT;
+	port->info_all = SPA_PORT_CHANGE_MASK_FLAGS |
+			SPA_PORT_CHANGE_MASK_PARAMS |
+			SPA_PORT_CHANGE_MASK_PROPS;
+	port->info = SPA_PORT_INFO_INIT();
+	port->info.flags = SPA_PORT_FLAG_NO_REF;
+	port->params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+	port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ);
+	port->params[2] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
+	port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+	port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+	port->info.params = port->params;
+	port->info.n_params = 5;
+	spa_vulkan_blit_init_stream(&this->state, &this->state.streams[port->stream_id],
+			SPA_DIRECTION_INPUT, NULL);
+	spa_list_init(&port->empty);
+	spa_list_init(&port->ready);
+
+	port = &this->port[SPA_DIRECTION_OUTPUT];
+	port->stream_id = SPA_DIRECTION_OUTPUT;
+	port->direction = SPA_DIRECTION_OUTPUT;
+	port->info_all = SPA_PORT_CHANGE_MASK_FLAGS |
+			SPA_PORT_CHANGE_MASK_PARAMS |
+			SPA_PORT_CHANGE_MASK_PROPS;
+	port->info = SPA_PORT_INFO_INIT();
+	port->info.flags = SPA_PORT_FLAG_NO_REF | SPA_PORT_FLAG_CAN_ALLOC_BUFFERS;
+	port->params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+	port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ);
+	port->params[2] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
+	port->params[3] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+	port->params[4] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+	port->info.params = port->params;
+	port->info.n_params = 5;
+	spa_list_init(&port->empty);
+	spa_list_init(&port->ready);
+	spa_vulkan_blit_init_stream(&this->state, &this->state.streams[port->stream_id],
+			SPA_DIRECTION_OUTPUT, NULL);
+
+	this->state.n_streams = 2;
+	spa_vulkan_blit_init(&this->state);
+	spa_vulkan_blit_prepare(&this->state);
+
+	return 0;
+}
+
+static const struct spa_interface_info impl_interfaces[] = {
+	{SPA_TYPE_INTERFACE_Node,},
+};
+
+static int
+impl_enum_interface_info(const struct spa_handle_factory *factory,
+			 const struct spa_interface_info **info,
+			 uint32_t *index)
+{
+	spa_return_val_if_fail(factory != NULL, -EINVAL);
+	spa_return_val_if_fail(info != NULL, -EINVAL);
+	spa_return_val_if_fail(index != NULL, -EINVAL);
+
+	switch (*index) {
+	case 0:
+		*info = &impl_interfaces[*index];
+		break;
+	default:
+		return 0;
+	}
+	(*index)++;
+	return 1;
+}
+
+static const struct spa_dict_item info_items[] = {
+	{ SPA_KEY_FACTORY_AUTHOR, "Columbarius <co1umbarius@protonmail.com>" },
+	{ SPA_KEY_FACTORY_DESCRIPTION, "Convert video frames using a vulkan blit" },
+};
+
+static const struct spa_dict info = SPA_DICT_INIT_ARRAY(info_items);
+
+const struct spa_handle_factory spa_vulkan_blit_filter_factory = {
+	SPA_VERSION_HANDLE_FACTORY,
+	SPA_NAME_API_VULKAN_BLIT_FILTER,
+	&info,
+	impl_get_size,
+	impl_init,
+	impl_enum_interface_info,
+};

src/daemon/pipewire-vulkan.conf.in

@@ -96,4 +96,5 @@ context.objects = [
     #{ factory = adapter            args = { factory.name = audiotestsrc node.name = my-test node.description = audiotestsrc } }
     { factory = spa-node-factory   args = { factory.name = api.vulkan.compute.source node.name = vulkan-compute-source object.export = true } }
     { factory = spa-node-factory   args = { factory.name = api.vulkan.compute.filter node.name = vulkan-compute-filter object.export = true } }
+    { factory = spa-node-factory   args = { factory.name = api.vulkan.blit.filter node.name = vulkan-blit-filter object.export = true } }
 ]