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-rw-r--r--spa/plugins/v4l2/v4l2-source.c1055
1 files changed, 1055 insertions, 0 deletions
diff --git a/spa/plugins/v4l2/v4l2-source.c b/spa/plugins/v4l2/v4l2-source.c
new file mode 100644
index 0000000..b6eae49
--- /dev/null
+++ b/spa/plugins/v4l2/v4l2-source.c
@@ -0,0 +1,1055 @@
+/* Spa V4l2 Source
+ *
+ * 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 <stddef.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <linux/videodev2.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/monitor/device.h>
+#include <spa/node/node.h>
+#include <spa/node/io.h>
+#include <spa/node/utils.h>
+#include <spa/node/keys.h>
+#include <spa/param/video/format-utils.h>
+#include <spa/param/param.h>
+#include <spa/param/latency-utils.h>
+#include <spa/pod/filter.h>
+#include <spa/control/control.h>
+
+#include "v4l2.h"
+
+static const char default_device[] = "/dev/video0";
+
+struct props {
+ char device[64];
+ char device_name[128];
+ int device_fd;
+};
+
+static void reset_props(struct props *props)
+{
+ strncpy(props->device, default_device, 64);
+}
+
+#define MAX_BUFFERS 32
+
+#define BUFFER_FLAG_OUTSTANDING (1<<0)
+#define BUFFER_FLAG_ALLOCATED (1<<1)
+#define BUFFER_FLAG_MAPPED (1<<2)
+
+struct buffer {
+ uint32_t id;
+ uint32_t flags;
+ struct spa_list link;
+ struct spa_buffer *outbuf;
+ struct spa_meta_header *h;
+ struct v4l2_buffer v4l2_buffer;
+ void *ptr;
+};
+
+#define MAX_CONTROLS 64
+
+struct control {
+ uint32_t id;
+ uint32_t ctrl_id;
+ double value;
+};
+
+struct port {
+ struct impl *impl;
+
+ bool alloc_buffers;
+ bool have_expbuf;
+
+ bool next_fmtdesc;
+ struct v4l2_fmtdesc fmtdesc;
+ bool next_frmsize;
+ struct v4l2_frmsizeenum frmsize;
+ struct v4l2_frmivalenum frmival;
+
+ bool have_format;
+ struct spa_video_info current_format;
+ struct spa_fraction rate;
+
+ struct spa_v4l2_device dev;
+
+ bool have_query_ext_ctrl;
+ struct v4l2_format fmt;
+ enum v4l2_buf_type type;
+ enum v4l2_memory memtype;
+
+ struct control controls[MAX_CONTROLS];
+ uint32_t n_controls;
+
+ struct buffer buffers[MAX_BUFFERS];
+ uint32_t n_buffers;
+ struct spa_list queue;
+
+ struct spa_source source;
+
+ uint64_t info_all;
+ struct spa_port_info info;
+ struct spa_io_buffers *io;
+ struct spa_io_sequence *control;
+#define PORT_PropInfo 0
+#define PORT_EnumFormat 1
+#define PORT_Meta 2
+#define PORT_IO 3
+#define PORT_Format 4
+#define PORT_Buffers 5
+#define PORT_Latency 6
+#define N_PORT_PARAMS 7
+ struct spa_param_info params[N_PORT_PARAMS];
+};
+
+struct impl {
+ struct spa_handle handle;
+ struct spa_node node;
+
+ struct spa_log *log;
+ struct spa_loop *data_loop;
+
+ uint64_t info_all;
+ struct spa_node_info info;
+#define NODE_PropInfo 0
+#define NODE_Props 1
+#define NODE_EnumFormat 2
+#define NODE_Format 3
+#define N_NODE_PARAMS 4
+ struct spa_param_info params[N_NODE_PARAMS];
+ struct props props;
+
+ struct spa_hook_list hooks;
+ struct spa_callbacks callbacks;
+
+ struct port out_ports[1];
+
+ struct spa_io_position *position;
+ struct spa_io_clock *clock;
+
+ struct spa_latency_info latency[2];
+};
+
+#define CHECK_PORT(this,direction,port_id) ((direction) == SPA_DIRECTION_OUTPUT && (port_id) == 0)
+
+#define GET_OUT_PORT(this,p) (&this->out_ports[p])
+#define GET_PORT(this,d,p) GET_OUT_PORT(this,p)
+
+#include "v4l2-utils.c"
+
+static int port_get_format(struct port *port,
+ uint32_t index,
+ const struct spa_pod *filter,
+ struct spa_pod **param,
+ struct spa_pod_builder *builder)
+{
+ struct spa_pod_frame f;
+
+ if (!port->have_format)
+ return -EIO;
+ if (index > 0)
+ return 0;
+
+ spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, SPA_PARAM_Format);
+ spa_pod_builder_add(builder,
+ SPA_FORMAT_mediaType, SPA_POD_Id(port->current_format.media_type),
+ SPA_FORMAT_mediaSubtype, SPA_POD_Id(port->current_format.media_subtype),
+ 0);
+
+ switch (port->current_format.media_subtype) {
+ case SPA_MEDIA_SUBTYPE_raw:
+ spa_pod_builder_add(builder,
+ SPA_FORMAT_VIDEO_format, SPA_POD_Id(port->current_format.info.raw.format),
+ SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&port->current_format.info.raw.size),
+ SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&port->current_format.info.raw.framerate),
+ 0);
+ break;
+ case SPA_MEDIA_SUBTYPE_mjpg:
+ case SPA_MEDIA_SUBTYPE_jpeg:
+ spa_pod_builder_add(builder,
+ SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&port->current_format.info.mjpg.size),
+ SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&port->current_format.info.mjpg.framerate),
+ 0);
+ break;
+ case SPA_MEDIA_SUBTYPE_h264:
+ spa_pod_builder_add(builder,
+ SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&port->current_format.info.h264.size),
+ SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&port->current_format.info.h264.framerate),
+ 0);
+ break;
+ default:
+ return -EIO;
+ }
+
+ *param = spa_pod_builder_pop(builder, &f);
+
+ return 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;
+ int res;
+
+ 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) {
+ case SPA_PARAM_PropInfo:
+ {
+ struct props *p = &this->props;
+
+ switch (result.index) {
+ case 0:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_PropInfo, id,
+ SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_device),
+ SPA_PROP_INFO_description, SPA_POD_String("The V4L2 device"),
+ SPA_PROP_INFO_type, SPA_POD_String(p->device));
+ break;
+ case 1:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_PropInfo, id,
+ SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_deviceName),
+ SPA_PROP_INFO_description, SPA_POD_String("The V4L2 device name"),
+ SPA_PROP_INFO_type, SPA_POD_String(p->device_name));
+ break;
+ case 2:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_PropInfo, id,
+ SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_deviceFd),
+ SPA_PROP_INFO_description, SPA_POD_String("The V4L2 fd"),
+ SPA_PROP_INFO_type, SPA_POD_Int(p->device_fd));
+ break;
+ default:
+ return spa_v4l2_enum_controls(this, seq, result.index - 3, num, filter);
+ }
+ break;
+ }
+ case SPA_PARAM_Props:
+ {
+ struct props *p = &this->props;
+
+ switch (result.index) {
+ case 0:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_Props, id,
+ SPA_PROP_device, SPA_POD_String(p->device),
+ SPA_PROP_deviceName, SPA_POD_String(p->device_name),
+ SPA_PROP_deviceFd, SPA_POD_Int(p->device_fd));
+ break;
+ default:
+ return 0;
+ }
+ break;
+ }
+ case SPA_PARAM_EnumFormat:
+ return spa_v4l2_enum_format(this, seq, start, num, filter);
+ case SPA_PARAM_Format:
+ if((res = port_get_format(GET_OUT_PORT(this, 0),
+ 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 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) {
+ case SPA_PARAM_Props:
+ {
+ struct props *p = &this->props;
+ struct spa_pod_object *obj = (struct spa_pod_object *) param;
+ struct spa_pod_prop *prop;
+
+ if (param == NULL) {
+ reset_props(p);
+ return 0;
+ }
+ SPA_POD_OBJECT_FOREACH(obj, prop) {
+ switch (prop->key) {
+ case SPA_PROP_device:
+ strncpy(p->device,
+ (char *)SPA_POD_CONTENTS(struct spa_pod_string, &prop->value),
+ sizeof(p->device)-1);
+ break;
+ default:
+ spa_v4l2_set_control(this, prop->key, prop);
+ break;
+ }
+ }
+
+ break;
+ }
+ default:
+ return -ENOENT;
+ }
+ 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_Clock:
+ this->clock = data;
+ break;
+ case SPA_IO_Position:
+ this->position = data;
+ break;
+ default:
+ return -ENOENT;
+ }
+ return 0;
+}
+
+static int impl_node_send_command(void *object, const struct spa_command *command)
+{
+ struct impl *this = object;
+ struct port *port;
+ int res;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(command != NULL, -EINVAL);
+
+ port = GET_OUT_PORT(this, 0);
+
+ switch (SPA_NODE_COMMAND_ID(command)) {
+ case SPA_NODE_COMMAND_ParamBegin:
+ if ((res = spa_v4l2_open(&port->dev, this->props.device)) < 0)
+ return res;
+ break;
+ case SPA_NODE_COMMAND_ParamEnd:
+ if (port->have_format)
+ return 0;
+ if ((res = spa_v4l2_close(&port->dev)) < 0)
+ return res;
+ break;
+ case SPA_NODE_COMMAND_Start:
+ {
+ if (!port->have_format) {
+ spa_log_error(this->log, "no format");
+ return -EIO;
+ }
+ if (port->n_buffers == 0) {
+ spa_log_error(this->log, "no buffers");
+ return -EIO;
+ }
+
+ if ((res = spa_v4l2_stream_on(this)) < 0)
+ return res;
+ break;
+ }
+ case SPA_NODE_COMMAND_Pause:
+ case SPA_NODE_COMMAND_Suspend:
+ if ((res = spa_v4l2_stream_off(this)) < 0)
+ return res;
+ break;
+ default:
+ return -ENOTSUP;
+ }
+
+ return 0;
+}
+
+static const struct spa_dict_item info_items[] = {
+ { SPA_KEY_DEVICE_API, "v4l2" },
+ { SPA_KEY_MEDIA_CLASS, "Video/Source" },
+ { SPA_KEY_MEDIA_ROLE, "Camera" },
+ { SPA_KEY_NODE_DRIVER, "true" },
+};
+
+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(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) {
+ spa_node_emit_port_info(&this->hooks,
+ SPA_DIRECTION_OUTPUT, 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, 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 *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_sync(void *object, int seq)
+{
+ struct impl *this = object;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ spa_node_emit_result(&this->hooks, seq, 0, 0, NULL);
+
+ 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 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 *param;
+ struct spa_pod_builder b = { 0 };
+ uint8_t buffer[1024];
+ 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 = GET_PORT(this, direction, port_id);
+
+ result.id = id;
+ result.next = start;
+ next:
+ result.index = result.next++;
+
+ spa_pod_builder_init(&b, buffer, sizeof(buffer));
+
+ switch (id) {
+ case SPA_PARAM_PropInfo:
+ return spa_v4l2_enum_controls(this, seq, start, num, filter);
+
+ case SPA_PARAM_EnumFormat:
+ return spa_v4l2_enum_format(this, seq, start, num, filter);
+
+ case SPA_PARAM_Format:
+ if((res = port_get_format(port, result.index, filter, &param, &b)) <= 0)
+ return res;
+ break;
+ case SPA_PARAM_Buffers:
+ if (!port->have_format)
+ return -EIO;
+ if (result.index > 0)
+ return 0;
+
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamBuffers, id,
+ SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(4, 1, MAX_BUFFERS),
+ SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(1),
+ SPA_PARAM_BUFFERS_size, SPA_POD_Int(port->fmt.fmt.pix.sizeimage),
+ SPA_PARAM_BUFFERS_stride, SPA_POD_Int(port->fmt.fmt.pix.bytesperline));
+ 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;
+ case SPA_PARAM_IO:
+ switch (result.index) {
+ case 0:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamIO, id,
+ SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Buffers),
+ SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_buffers)));
+ break;
+ case 1:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamIO, id,
+ SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Clock),
+ SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_clock)));
+ break;
+ case 2:
+ param = spa_pod_builder_add_object(&b,
+ SPA_TYPE_OBJECT_ParamIO, id,
+ SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Control),
+ SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_sequence)));
+ break;
+ default:
+ return 0;
+ }
+ break;
+ case SPA_PARAM_Latency:
+ switch (result.index) {
+ case 0: case 1:
+ param = spa_latency_build(&b, id, &this->latency[result.index]);
+ 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 port_set_format(struct impl *this, struct port *port,
+ uint32_t flags,
+ const struct spa_pod *format)
+{
+ struct spa_video_info info;
+ int res;
+
+ if (port->have_format) {
+ spa_v4l2_stream_off(this);
+ spa_v4l2_clear_buffers(this);
+ }
+ if (format == NULL) {
+ if (!port->have_format)
+ return 0;
+
+ port->have_format = false;
+ port->dev.have_format = false;
+ spa_v4l2_close(&port->dev);
+ goto done;
+ } else {
+ if ((res = spa_format_parse(format, &info.media_type, &info.media_subtype)) < 0)
+ return res;
+
+ if (info.media_type != SPA_MEDIA_TYPE_video) {
+ spa_log_error(this->log, "media type must be video");
+ return -EINVAL;
+ }
+
+ switch (info.media_subtype) {
+ case SPA_MEDIA_SUBTYPE_raw:
+ if (spa_format_video_raw_parse(format, &info.info.raw) < 0) {
+ spa_log_error(this->log, "can't parse video raw");
+ return -EINVAL;
+ }
+ break;
+ case SPA_MEDIA_SUBTYPE_mjpg:
+ if (spa_format_video_mjpg_parse(format, &info.info.mjpg) < 0)
+ return -EINVAL;
+ break;
+ case SPA_MEDIA_SUBTYPE_h264:
+ if (spa_format_video_h264_parse(format, &info.info.h264) < 0)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ if (port->have_format && !SPA_FLAG_IS_SET(flags, SPA_NODE_PARAM_FLAG_TEST_ONLY)) {
+ port->have_format = false;
+ }
+
+ if ((res = spa_v4l2_set_format(this, &info, flags)) < 0)
+ return res;
+
+ if (!SPA_FLAG_IS_SET(flags, SPA_NODE_PARAM_FLAG_TEST_ONLY)) {
+ port->current_format = info;
+ port->have_format = true;
+ }
+
+ done:
+ this->info.change_mask |= SPA_NODE_CHANGE_MASK_PARAMS;
+ port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
+ if (port->have_format) {
+ port->params[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE);
+ port->params[PORT_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, SPA_PARAM_INFO_READ);
+ this->params[NODE_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READ);
+ } else {
+ port->params[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+ port->params[PORT_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+ this->params[NODE_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, 0);
+ }
+ emit_port_info(this, port, false);
+ emit_node_info(this, 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)
+{
+ int res;
+ struct impl *this = object;
+ struct port *port;
+
+ spa_return_val_if_fail(object != NULL, -EINVAL);
+
+ spa_return_val_if_fail(CHECK_PORT(object, direction, port_id), -EINVAL);
+
+ port = GET_PORT(this, direction, port_id);
+
+ switch (id) {
+ case SPA_PARAM_Latency:
+ {
+ struct spa_latency_info info;
+ if ((res = spa_latency_parse(param, &info)) < 0)
+ return res;
+ if (direction == info.direction)
+ return -EINVAL;
+
+ this->latency[info.direction] = info;
+ port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
+ port->params[PORT_Latency].flags ^= SPA_PARAM_INFO_SERIAL;
+ emit_port_info(this, port, false);
+ break;
+ }
+ case SPA_PARAM_Format:
+ res = port_set_format(object, port, flags, param);
+ break;
+ default:
+ res = -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;
+ int res;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), -EINVAL);
+
+ port = GET_PORT(this, direction, port_id);
+
+ if (port->n_buffers) {
+ spa_v4l2_stream_off(this);
+ if ((res = spa_v4l2_clear_buffers(this)) < 0)
+ return res;
+ }
+ if (n_buffers > 0 && !port->have_format)
+ return -EIO;
+ if (n_buffers > MAX_BUFFERS)
+ return -ENOSPC;
+ if (buffers == NULL)
+ return 0;
+
+ if (flags & SPA_NODE_BUFFERS_FLAG_ALLOC) {
+ res = spa_v4l2_alloc_buffers(this, buffers, n_buffers);
+ } else {
+ res = spa_v4l2_use_buffers(this, buffers, n_buffers);
+ }
+ return res;
+}
+
+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 = GET_PORT(this, direction, port_id);
+
+ switch (id) {
+ case SPA_IO_Buffers:
+ port->io = data;
+ break;
+ case SPA_IO_Control:
+ port->control = 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;
+ int res;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+ spa_return_val_if_fail(port_id == 0, -EINVAL);
+
+ port = GET_OUT_PORT(this, port_id);
+
+ spa_return_val_if_fail(buffer_id < port->n_buffers, -EINVAL);
+
+ res = spa_v4l2_buffer_recycle(this, buffer_id);
+
+ return res;
+}
+
+static int process_control(struct impl *this, struct spa_pod_sequence *control)
+{
+ struct spa_pod_control *c;
+
+ SPA_POD_SEQUENCE_FOREACH(control, c) {
+ switch (c->type) {
+ case SPA_CONTROL_Properties:
+ {
+ struct spa_pod_prop *prop;
+ struct spa_pod_object *obj = (struct spa_pod_object *) &c->value;
+
+ SPA_POD_OBJECT_FOREACH(obj, prop) {
+ spa_v4l2_set_control(this, prop->key, prop);
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
+static int impl_node_process(void *object)
+{
+ struct impl *this = object;
+ int res;
+ struct spa_io_buffers *io;
+ struct port *port;
+ struct buffer *b;
+
+ spa_return_val_if_fail(this != NULL, -EINVAL);
+
+ port = GET_OUT_PORT(this, 0);
+ if ((io = port->io) == NULL)
+ return -EIO;
+
+ if (port->control)
+ process_control(this, &port->control->sequence);
+
+ spa_log_trace(this->log, "%p; status %d", this, io->status);
+
+ if (io->status == SPA_STATUS_HAVE_DATA)
+ return SPA_STATUS_HAVE_DATA;
+
+ if (io->buffer_id < port->n_buffers) {
+ if ((res = spa_v4l2_buffer_recycle(this, io->buffer_id)) < 0)
+ return res;
+
+ io->buffer_id = SPA_ID_INVALID;
+ }
+
+ if (spa_list_is_empty(&port->queue))
+ return SPA_STATUS_OK;
+
+ b = spa_list_first(&port->queue, struct buffer, link);
+ spa_list_remove(&b->link);
+ SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUTSTANDING);
+
+ spa_log_trace(this->log, "%p: dequeue buffer %d", this, b->id);
+
+ io->buffer_id = b->id;
+ io->status = SPA_STATUS_HAVE_DATA;
+
+ return 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,
+ .sync = impl_node_sync,
+ .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)
+{
+ 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;
+ const char *str;
+ struct port *port;
+ int res;
+
+ 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);
+ v4l2_log_topic_init(this->log);
+
+ this->data_loop = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_DataLoop);
+ if (this->data_loop == NULL) {
+ spa_log_error(this->log, "a data_loop is needed");
+ return -EINVAL;
+ }
+
+ this->node.iface = SPA_INTERFACE_INIT(
+ SPA_TYPE_INTERFACE_Node,
+ SPA_VERSION_NODE,
+ &impl_node, this);
+ spa_hook_list_init(&this->hooks);
+
+ this->latency[SPA_DIRECTION_INPUT] = SPA_LATENCY_INFO(SPA_DIRECTION_INPUT);
+ this->latency[SPA_DIRECTION_OUTPUT] = SPA_LATENCY_INFO(SPA_DIRECTION_OUTPUT);
+
+ 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.flags = SPA_NODE_FLAG_RT;
+ this->params[NODE_PropInfo] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ);
+ this->params[NODE_Props] = SPA_PARAM_INFO(SPA_PARAM_Props, SPA_PARAM_INFO_READWRITE);
+ this->params[NODE_EnumFormat] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+ this->params[NODE_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, 0);
+ this->info.params = this->params;
+ this->info.n_params = N_NODE_PARAMS;
+ reset_props(&this->props);
+
+ port = GET_OUT_PORT(this, 0);
+ port->impl = this;
+ spa_list_init(&port->queue);
+ port->info_all = SPA_PORT_CHANGE_MASK_FLAGS |
+ SPA_PORT_CHANGE_MASK_PARAMS;
+ port->info = SPA_PORT_INFO_INIT();
+ port->info.flags = SPA_PORT_FLAG_LIVE |
+ SPA_PORT_FLAG_PHYSICAL |
+ SPA_PORT_FLAG_TERMINAL;
+ port->params[PORT_PropInfo] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ);
+ port->params[PORT_EnumFormat] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
+ port->params[PORT_Meta] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ);
+ port->params[PORT_IO] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);
+ port->params[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE);
+ port->params[PORT_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0);
+ port->params[PORT_Latency] = SPA_PARAM_INFO(SPA_PARAM_Latency, SPA_PARAM_INFO_READ);
+ port->info.params = port->params;
+ port->info.n_params = N_PORT_PARAMS;
+
+ port->alloc_buffers = true;
+ port->have_expbuf = true;
+ port->have_query_ext_ctrl = true;
+ port->dev.log = this->log;
+ port->dev.fd = -1;
+
+ if (info && (str = spa_dict_lookup(info, SPA_KEY_API_V4L2_PATH))) {
+ strncpy(this->props.device, str, 63);
+ if ((res = spa_v4l2_open(&port->dev, this->props.device)) < 0)
+ return res;
+ spa_v4l2_close(&port->dev);
+ }
+
+ 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);
+
+ if (*index >= SPA_N_ELEMENTS(impl_interfaces))
+ return 0;
+
+ *info = &impl_interfaces[(*index)++];
+
+ return 1;
+}
+
+const struct spa_handle_factory spa_v4l2_source_factory = {
+ SPA_VERSION_HANDLE_FACTORY,
+ SPA_NAME_API_V4L2_SOURCE,
+ NULL,
+ impl_get_size,
+ impl_init,
+ impl_enum_interface_info,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-21 22:48:55 +0000