Adding upstream version 0.3.65.upstream/0.3.65upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 199 insertions, 0 deletions

diff --git a/spa/plugins/alsa/alsa-seq.h b/spa/plugins/alsa/alsa-seq.h
new file mode 100644
index 0000000..5d5ed51
--- /dev/null
+++ b/spa/plugins/alsa/alsa-seq.h
@@ -0,0 +1,199 @@
+/* Spa ALSA Sequencer
+ *
+ * Copyright © 2019 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.
+ */
+
+#ifndef SPA_ALSA_SEQ_H
+#define SPA_ALSA_SEQ_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+#include <math.h>
+
+#include <alsa/asoundlib.h>
+
+#include <spa/support/plugin.h>
+#include <spa/support/loop.h>
+#include <spa/utils/list.h>
+#include <spa/utils/dll.h>
+
+#include <spa/node/node.h>
+#include <spa/node/utils.h>
+#include <spa/node/io.h>
+#include <spa/param/param.h>
+#include <spa/param/audio/format-utils.h>
+#include <spa/param/latency-utils.h>
+
+#include "alsa.h"
+
+
+struct props {
+	char device[64];
+	char clock_name[64];
+	bool disable_longname;
+};
+
+#define MAX_EVENT_SIZE 1024
+#define MAX_PORTS 256
+#define MAX_BUFFERS 32
+
+struct buffer {
+	uint32_t id;
+#define BUFFER_FLAG_OUT	(1<<0)
+	uint32_t flags;
+	struct spa_buffer *buf;
+	struct spa_meta_header *h;
+	struct spa_list link;
+};
+
+struct seq_port {
+	uint32_t id;
+	enum spa_direction direction;
+	snd_seq_addr_t addr;
+
+	uint64_t info_all;
+	struct spa_port_info info;
+#define PORT_EnumFormat	0
+#define PORT_Meta	1
+#define PORT_IO		2
+#define PORT_Format	3
+#define PORT_Buffers	4
+#define PORT_Latency	5
+#define N_PORT_PARAMS	6
+	struct spa_param_info params[N_PORT_PARAMS];
+
+	struct spa_io_buffers *io;
+
+	struct buffer buffers[MAX_BUFFERS];
+	unsigned int n_buffers;
+
+	struct spa_list free;
+	struct spa_list ready;
+
+	struct buffer *buffer;
+	struct spa_pod_builder builder;
+	struct spa_pod_frame frame;
+
+	struct spa_audio_info current_format;
+	unsigned int have_format:1;
+	unsigned int valid:1;
+	unsigned int active:1;
+
+	struct spa_latency_info latency[2];
+};
+
+struct seq_stream {
+	enum spa_direction direction;
+	unsigned int caps;
+	snd_midi_event_t *codec;
+	struct seq_port ports[MAX_PORTS];
+	uint32_t last_port;
+};
+
+struct seq_conn {
+	snd_seq_t *hndl;
+	snd_seq_addr_t addr;
+	int queue_id;
+	int fd;
+	struct spa_source source;
+};
+
+#define BW_PERIOD	(3 * SPA_NSEC_PER_SEC)
+
+struct seq_state {
+	struct spa_handle handle;
+	struct spa_node node;
+
+	struct spa_log *log;
+	struct spa_system *data_system;
+	struct spa_loop *data_loop;
+	struct spa_loop *main_loop;
+
+	struct seq_conn sys;
+	struct seq_conn event;
+	int (*port_info) (void *data, const snd_seq_addr_t *addr, const snd_seq_port_info_t *info);
+	void *port_info_data;
+
+	struct spa_hook_list hooks;
+	struct spa_callbacks callbacks;
+
+	uint64_t info_all;
+	struct spa_node_info info;
+#define NODE_PropInfo	0
+#define NODE_Props	1
+#define NODE_IO		2
+#define N_NODE_PARAMS	3
+	struct spa_param_info params[N_NODE_PARAMS];
+	struct props props;
+
+	struct spa_io_clock *clock;
+	struct spa_io_position *position;
+
+	int rate_denom;
+	uint32_t duration;
+	uint32_t threshold;
+	struct spa_fraction rate;
+
+	struct spa_source source;
+	int timerfd;
+	uint64_t current_time;
+	uint64_t next_time;
+	uint64_t base_time;
+	uint64_t queue_time;
+
+	unsigned int opened:1;
+	unsigned int started:1;
+	unsigned int following:1;
+
+	struct seq_stream streams[2];
+
+	struct spa_dll dll;
+};
+
+#define VALID_DIRECTION(this,d)		((d) == SPA_DIRECTION_INPUT || (d) == SPA_DIRECTION_OUTPUT)
+#define VALID_PORT(this,d,p)		((p) < MAX_PORTS && this->streams[d].ports[p].id == (p))
+#define CHECK_IN_PORT(this,d,p)		((d) == SPA_DIRECTION_INPUT && VALID_PORT(this,d,p))
+#define CHECK_OUT_PORT(this,d,p)	((d) == SPA_DIRECTION_OUTPUT && VALID_PORT(this,d,p))
+#define CHECK_PORT(this,d,p)		(VALID_DIRECTION(this,d) && VALID_PORT(this,d,p))
+
+#define GET_PORT(this,d,p)		(&this->streams[d].ports[p])
+
+int spa_alsa_seq_open(struct seq_state *state);
+int spa_alsa_seq_close(struct seq_state *state);
+
+int spa_alsa_seq_start(struct seq_state *state);
+int spa_alsa_seq_pause(struct seq_state *state);
+int spa_alsa_seq_reassign_follower(struct seq_state *state);
+
+int spa_alsa_seq_activate_port(struct seq_state *state, struct seq_port *port, bool active);
+int spa_alsa_seq_recycle_buffer(struct seq_state *state, struct seq_port *port, uint32_t buffer_id);
+
+int spa_alsa_seq_process(struct seq_state *state);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* SPA_ALSA_SEQ_H */