1 files changed, 507 insertions, 0 deletions

diff --git a/spa/plugins/ffmpeg/ffmpeg-enc.c b/spa/plugins/ffmpeg/ffmpeg-enc.c
new file mode 100644
index 0000000..6218183
--- /dev/null
+++ b/spa/plugins/ffmpeg/ffmpeg-enc.c
@@ -0,0 +1,507 @@
+/* Spa FFmpeg encoder
+ *
+ * Copyright © 2018 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <spa/utils/string.h>
+#include <spa/support/plugin.h>
+#include <spa/support/log.h>
+#include <spa/node/node.h>
+#include <spa/node/utils.h>
+#include <spa/node/io.h>
+#include <spa/param/video/format-utils.h>
+#include <spa/pod/filter.h>
+
+#include "ffmpeg.h"
+
+#define IS_VALID_PORT(this,d,id)	((id) == 0)
+#define GET_IN_PORT(this,p)		(&this->in_ports[p])
+#define GET_OUT_PORT(this,p)		(&this->out_ports[p])
+#define GET_PORT(this,d,p)		(d == SPA_DIRECTION_INPUT ? GET_IN_PORT(this,p) : GET_OUT_PORT(this,p))
+
+#define MAX_BUFFERS    32
+
+struct buffer {
+	uint32_t id;
+	uint32_t flags;
+	struct spa_buffer *outbuf;
+	struct spa_list link;
+};
+
+struct port {
+	enum spa_direction direction;
+	uint32_t id;
+
+	uint64_t info_all;
+	struct spa_port_info info;
+	struct spa_param_info params[8];
+
+	struct spa_video_info current_format;
+	unsigned int have_format:1;
+
+	struct buffer buffers[MAX_BUFFERS];
+	uint32_t n_buffers;
+
+	struct spa_io_buffers *io;
+
+	struct spa_list free;
+	struct spa_list ready;
+};
+
+struct impl {
+	struct spa_handle handle;
+	struct spa_node node;
+
+	struct spa_log *log;
+
+	uint64_t info_all;
+	struct spa_node_info info;
+	struct spa_param_info params[2];
+
+	struct spa_hook_list hooks;
+
+	struct port in_ports[1];
+	struct port out_ports[1];
+
+	bool started;
+};
+
+static int impl_node_enum_params(void *object, int seq,
+			uint32_t id, uint32_t start, uint32_t num,
+			const struct spa_pod *filter)
+{
+	return -ENOTSUP;
+}
+
+static int impl_node_set_param(void *object, uint32_t id, uint32_t flags,
+					 const struct spa_pod *param)
+{
+	return -ENOTSUP;
+}
+
+static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size)
+{
+	return -ENOTSUP;
+}
+
+static int impl_node_send_command(void *object, const struct spa_command *command)
+{
+	struct impl *this = object;
+
+	if (this == NULL || command == NULL)
+		return -EINVAL;
+
+	switch (SPA_NODE_COMMAND_ID(command)) {
+	case SPA_NODE_COMMAND_Start:
+		this->started = true;
+		break;
+	case SPA_NODE_COMMAND_Pause:
+		this->started = false;
+		break;
+	default:
+		return -ENOTSUP;
+	}
+	return 0;
+}
+
+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) {
+		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) {
+		spa_node_emit_port_info(&this->hooks,
+				port->direction, port->id, &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, GET_IN_PORT(this, 0), true);
+	emit_port_info(this, GET_OUT_PORT(this, 0), 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 *user_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 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)
+{
+	return -ENOTSUP;
+}
+
+static int port_get_format(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;
+	struct port *port;
+
+	port = GET_PORT(this, direction, port_id);
+
+	if (!port->have_format)
+		return -EIO;
+
+	if (index > 0)
+		return 0;
+
+	*param = NULL;
+
+	return 1;
+}
+
+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 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;
+
+	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 ((res = port_get_format(this, direction, port_id,
+						result.index, filter, &param, &b)) <= 0)
+			return res;
+		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 port_set_format(void *object,
+			   enum spa_direction direction, uint32_t port_id,
+			   uint32_t flags, const struct spa_pod *format)
+{
+	struct impl *this = object;
+	struct port *port;
+	int res;
+
+	port = GET_PORT(this, direction, port_id);
+
+	if (format == NULL) {
+		port->have_format = false;
+	} 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 &&
+		    info.media_subtype != SPA_MEDIA_SUBTYPE_raw)
+			return -EINVAL;
+
+		if (spa_format_video_raw_parse(format, &info.info.raw) < 0)
+			return -EINVAL;
+
+		if (!(flags & SPA_NODE_PARAM_FLAG_TEST_ONLY)) {
+			port->current_format = info;
+			port->have_format = true;
+		}
+	}
+	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)
+{
+	if (id == SPA_PARAM_Format) {
+		return port_set_format(object, direction, port_id, flags, param);
+	}
+	else
+		return -ENOENT;
+}
+
+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)
+{
+	if (object == NULL)
+		return -EINVAL;
+
+	if (!IS_VALID_PORT(object, direction, port_id))
+		return -EINVAL;
+
+	return -ENOTSUP;
+}
+
+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;
+
+	if (this == NULL)
+		return -EINVAL;
+
+	if (!IS_VALID_PORT(this, direction, port_id))
+		return -EINVAL;
+
+	port = GET_PORT(this, direction, port_id);
+
+	if (id == SPA_IO_Buffers)
+		port->io = data;
+	else
+		return -ENOENT;
+
+	return 0;
+}
+
+static int
+impl_node_port_reuse_buffer(void *object, uint32_t port_id, uint32_t buffer_id)
+{
+	if (object == NULL)
+		return -EINVAL;
+
+	if (port_id != 0)
+		return -EINVAL;
+
+	return -ENOTSUP;
+}
+
+static int impl_node_process(void *object)
+{
+	struct impl *this = object;
+	struct port *port;
+	struct spa_io_buffers *output;
+
+	if (this == NULL)
+		return -EINVAL;
+
+	if ((output = this->out_ports[0].io) == NULL)
+		return -EIO;
+
+	port = &this->out_ports[0];
+
+	if (!port->have_format) {
+		output->status = -EIO;
+		return -EIO;
+	}
+	output->status = SPA_STATUS_OK;
+
+	return SPA_STATUS_OK;
+}
+
+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;
+
+	if (handle == NULL || interface == NULL)
+		return -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)
+{
+	spa_return_val_if_fail(handle != NULL, -EINVAL);
+
+	return 0;
+}
+
+size_t
+spa_ffmpeg_enc_get_size(const struct spa_handle_factory *factory, const struct spa_dict *params)
+{
+	return sizeof(struct impl);
+}
+
+int
+spa_ffmpeg_enc_init(struct spa_handle *handle,
+		    const struct spa_dict *info,
+		    const struct spa_support *support, uint32_t n_support)
+{
+	struct impl *this;
+	struct port *port;
+
+	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);
+
+	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;
+	this->info = SPA_NODE_INFO_INIT();
+	this->info.max_input_ports = 1;
+	this->info.max_output_ports = 1;
+	this->info.flags = SPA_NODE_FLAG_RT;
+	this->info.params = this->params;
+
+	port = GET_IN_PORT(this, 0);
+	port->direction = SPA_DIRECTION_INPUT;
+	port->id = 0;
+	port->info_all = SPA_PORT_CHANGE_MASK_FLAGS |
+			SPA_PORT_CHANGE_MASK_PARAMS;
+	port->info = SPA_PORT_INFO_INIT();
+	port->info.flags = 0;
+	port->params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+	port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+	port->info.params = port->params;
+	port->info.n_params = 2;
+
+	port = GET_OUT_PORT(this, 0);
+	port->direction = SPA_DIRECTION_OUTPUT;
+	port->id = 0;
+	port->info_all = SPA_PORT_CHANGE_MASK_FLAGS |
+			SPA_PORT_CHANGE_MASK_PARAMS;
+	port->info = SPA_PORT_INFO_INIT();
+	port->info.flags = 0;
+	port->params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+	port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+	port->info.params = port->params;
+	port->info.n_params = 2;
+
+	return 0;
+}