/* Spa V4l2 Source * Copyright (C) 2016 Wim Taymans * * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include typedef struct _SpaV4l2Source SpaV4l2Source; static const char default_device[] = "/dev/video0"; typedef struct { char device[64]; char device_name[128]; int device_fd; } SpaV4l2SourceProps; static void reset_v4l2_source_props (SpaV4l2SourceProps *props) { strncpy (props->device, default_device, 64); } #define MAX_BUFFERS 64 typedef struct _V4l2Buffer V4l2Buffer; struct _V4l2Buffer { SpaBuffer *outbuf; SpaMetaHeader *h; bool outstanding; bool allocated; struct v4l2_buffer v4l2_buffer; }; typedef struct { uint32_t node; uint32_t clock; SpaMediaTypes media_types; SpaMediaSubtypes media_subtypes; SpaMediaSubtypesVideo media_subtypes_video; SpaPropVideo prop_video; SpaVideoFormats video_formats; } URI; typedef struct { SpaLog *log; SpaLoop *main_loop; SpaLoop *data_loop; bool export_buf; bool started; bool next_fmtdesc; struct v4l2_fmtdesc fmtdesc; bool next_frmsize; struct v4l2_frmsizeenum frmsize; struct v4l2_frmivalenum frmival; bool have_format; SpaVideoInfo current_format; uint8_t format_buffer[1024]; int fd; bool opened; struct v4l2_capability cap; struct v4l2_format fmt; enum v4l2_buf_type type; enum v4l2_memory memtype; V4l2Buffer buffers[MAX_BUFFERS]; uint32_t n_buffers; bool source_enabled; SpaSource source; SpaPortInfo info; SpaAllocParam *params[2]; uint8_t params_buffer[1024]; void *io; int64_t last_ticks; int64_t last_monotonic; } SpaV4l2State; struct _SpaV4l2Source { SpaHandle handle; SpaNode node; SpaClock clock; SpaIDMap *map; SpaLog *log; URI uri; uint32_t seq; uint8_t props_buffer[512]; SpaV4l2SourceProps props; SpaNodeEventCallback event_cb; void *user_data; SpaV4l2State state[1]; }; #define CHECK_PORT(this, direction, port_id) ((direction) == SPA_DIRECTION_OUTPUT && (port_id) == 0) static void update_state (SpaV4l2Source *this, SpaNodeState state) { spa_log_info (this->log, "state: %d", state); this->node.state = state; } #define PROP(f,key,type,...) \ SPA_POD_PROP (f,key,SPA_POD_PROP_FLAG_READWRITE,type,1,__VA_ARGS__) #define PROP_R(f,key,type,...) \ SPA_POD_PROP (f,key,SPA_POD_PROP_FLAG_READABLE,type,1,__VA_ARGS__) #define PROP_MM(f,key,type,...) \ SPA_POD_PROP (f,key,SPA_POD_PROP_FLAG_READWRITE | \ SPA_POD_PROP_RANGE_MIN_MAX,type,3,__VA_ARGS__) #define PROP_U_MM(f,key,type,...) \ SPA_POD_PROP (f,key,SPA_POD_PROP_FLAG_READWRITE | \ SPA_POD_PROP_FLAG_UNSET | \ SPA_POD_PROP_RANGE_MIN_MAX,type,3,__VA_ARGS__) #define PROP_EN(f,key,type,n,...) \ SPA_POD_PROP (f,key,SPA_POD_PROP_FLAG_READWRITE | \ SPA_POD_PROP_RANGE_ENUM,type,n,__VA_ARGS__) #define PROP_U_EN(f,key,type,n,...) \ SPA_POD_PROP (f,key,SPA_POD_PROP_FLAG_READWRITE | \ SPA_POD_PROP_FLAG_UNSET | \ SPA_POD_PROP_RANGE_ENUM,type,n,__VA_ARGS__) #include "v4l2-utils.c" enum { PROP_ID_NONE, PROP_ID_DEVICE, PROP_ID_DEVICE_NAME, PROP_ID_DEVICE_FD, }; static SpaResult spa_v4l2_source_node_get_props (SpaNode *node, SpaProps **props) { SpaV4l2Source *this; SpaPODBuilder b = { NULL, }; SpaPODFrame f[2]; if (node == NULL || props == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); spa_pod_builder_init (&b, this->props_buffer, sizeof (this->props_buffer)); spa_pod_builder_props (&b, &f[0], PROP (&f[1], PROP_ID_DEVICE, -SPA_POD_TYPE_STRING, this->props.device, sizeof (this->props.device)), PROP_R (&f[1], PROP_ID_DEVICE_NAME, -SPA_POD_TYPE_STRING, this->props.device_name, sizeof (this->props.device_name)), PROP_R (&f[1], PROP_ID_DEVICE_FD, SPA_POD_TYPE_INT, this->props.device_fd)); *props = SPA_POD_BUILDER_DEREF (&b, f[0].ref, SpaProps); return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_set_props (SpaNode *node, const SpaProps *props) { SpaV4l2Source *this; if (node == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); if (props == NULL) { reset_v4l2_source_props (&this->props); return SPA_RESULT_OK; } else { spa_props_query (props, PROP_ID_DEVICE, -SPA_POD_TYPE_STRING, this->props.device, sizeof (this->props.device), 0); } return SPA_RESULT_OK; } static SpaResult do_pause_done (SpaLoop *loop, bool async, uint32_t seq, size_t size, void *data, void *user_data) { SpaV4l2Source *this = user_data; SpaV4l2State *state = &this->state[0]; SpaNodeEventAsyncComplete *ac = data; if (SPA_RESULT_IS_OK (ac->body.res.value)) ac->body.res.value = spa_v4l2_stream_off (this); if (SPA_RESULT_IS_OK (ac->body.res.value)) { state->started = false; update_state (this, SPA_NODE_STATE_PAUSED); } this->event_cb (&this->node, (SpaNodeEvent *)ac, this->user_data); return SPA_RESULT_OK; } static SpaResult do_pause (SpaLoop *loop, bool async, uint32_t seq, size_t size, void *data, void *user_data) { SpaV4l2Source *this = user_data; SpaResult res; SpaNodeCommand *cmd = data; res = spa_node_port_send_command (&this->node, SPA_DIRECTION_OUTPUT, 0, cmd); if (async) { SpaNodeEventAsyncComplete ac = SPA_NODE_EVENT_ASYNC_COMPLETE_INIT (seq, res); spa_loop_invoke (this->state[0].main_loop, do_pause_done, seq, sizeof (ac), &ac, this); } return res; } static SpaResult do_start_done (SpaLoop *loop, bool async, uint32_t seq, size_t size, void *data, void *user_data) { SpaV4l2Source *this = user_data; SpaV4l2State *state = &this->state[0]; SpaNodeEventAsyncComplete *ac = data; if (SPA_RESULT_IS_OK (ac->body.res.value)) { state->started = true; update_state (this, SPA_NODE_STATE_STREAMING); } this->event_cb (&this->node, (SpaNodeEvent *)ac, this->user_data); return SPA_RESULT_OK; } static SpaResult do_start (SpaLoop *loop, bool async, uint32_t seq, size_t size, void *data, void *user_data) { SpaV4l2Source *this = user_data; SpaResult res; SpaNodeCommand *cmd = data; res = spa_node_port_send_command (&this->node, SPA_DIRECTION_OUTPUT, 0, cmd); if (async) { SpaNodeEventAsyncComplete ac = SPA_NODE_EVENT_ASYNC_COMPLETE_INIT (seq, res); spa_loop_invoke (this->state[0].main_loop, do_start_done, seq, sizeof (ac), &ac, this); } return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_send_command (SpaNode *node, SpaNodeCommand *command) { SpaV4l2Source *this; if (node == NULL || command == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); switch (SPA_NODE_COMMAND_TYPE (command)) { case SPA_NODE_COMMAND_INVALID: return SPA_RESULT_INVALID_COMMAND; case SPA_NODE_COMMAND_START: { SpaV4l2State *state = &this->state[0]; SpaResult res; if (!state->have_format) return SPA_RESULT_NO_FORMAT; if (state->n_buffers == 0) return SPA_RESULT_NO_BUFFERS; if (state->started) return SPA_RESULT_OK; if ((res = spa_v4l2_stream_on (this)) < 0) return res; return spa_loop_invoke (this->state[0].data_loop, do_start, ++this->seq, SPA_POD_SIZE (command), command, this); } case SPA_NODE_COMMAND_PAUSE: { SpaV4l2State *state = &this->state[0]; if (!state->have_format) return SPA_RESULT_NO_FORMAT; if (state->n_buffers == 0) return SPA_RESULT_NO_BUFFERS; if (!state->started) return SPA_RESULT_OK; return spa_loop_invoke (this->state[0].data_loop, do_pause, ++this->seq, SPA_POD_SIZE (command), command, this); } case SPA_NODE_COMMAND_FLUSH: case SPA_NODE_COMMAND_DRAIN: case SPA_NODE_COMMAND_MARKER: return SPA_RESULT_NOT_IMPLEMENTED; case SPA_NODE_COMMAND_CLOCK_UPDATE: { return SPA_RESULT_OK; } } return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_set_event_callback (SpaNode *node, SpaNodeEventCallback event, void *user_data) { SpaV4l2Source *this; if (node == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); this->event_cb = event; this->user_data = user_data; return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_get_n_ports (SpaNode *node, uint32_t *n_input_ports, uint32_t *max_input_ports, uint32_t *n_output_ports, uint32_t *max_output_ports) { if (node == NULL) return SPA_RESULT_INVALID_ARGUMENTS; if (n_input_ports) *n_input_ports = 0; if (max_input_ports) *max_input_ports = 0; if (n_output_ports) *n_output_ports = 1; if (max_output_ports) *max_output_ports = 1; return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_get_port_ids (SpaNode *node, uint32_t n_input_ports, uint32_t *input_ids, uint32_t n_output_ports, uint32_t *output_ids) { if (node == NULL) return SPA_RESULT_INVALID_ARGUMENTS; if (n_output_ports > 0 && output_ids != NULL) output_ids[0] = 0; return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_add_port (SpaNode *node, SpaDirection direction, uint32_t port_id) { return SPA_RESULT_NOT_IMPLEMENTED; } static SpaResult spa_v4l2_source_node_remove_port (SpaNode *node, SpaDirection direction, uint32_t port_id) { return SPA_RESULT_NOT_IMPLEMENTED; } static SpaResult spa_v4l2_source_node_port_enum_formats (SpaNode *node, SpaDirection direction, uint32_t port_id, SpaFormat **format, const SpaFormat *filter, uint32_t index) { SpaV4l2Source *this; SpaResult res; if (node == NULL || format == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); if (!CHECK_PORT (this, direction, port_id)) return SPA_RESULT_INVALID_PORT; res = spa_v4l2_enum_format (this, format, filter, index); return res; } static SpaResult spa_v4l2_source_node_port_set_format (SpaNode *node, SpaDirection direction, uint32_t port_id, SpaPortFormatFlags flags, const SpaFormat *format) { SpaV4l2Source *this; SpaV4l2State *state; SpaResult res; SpaVideoInfo info; if (node == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); if (!CHECK_PORT (this, direction, port_id)) return SPA_RESULT_INVALID_PORT; state = &this->state[port_id]; if (format == NULL) { spa_v4l2_stream_off (this); spa_v4l2_clear_buffers (this); spa_v4l2_close (this); state->have_format = false; update_state (this, SPA_NODE_STATE_CONFIGURE); return SPA_RESULT_OK; } if ((res = spa_format_video_parse (format, &info)) < 0) return res; if (state->have_format) { if (info.media_type == state->current_format.media_type && info.media_subtype == state->current_format.media_subtype && info.info.raw.format == state->current_format.info.raw.format && info.info.raw.size.width == state->current_format.info.raw.size.width && info.info.raw.size.height == state->current_format.info.raw.size.height) return SPA_RESULT_OK; if (!(flags & SPA_PORT_FORMAT_FLAG_TEST_ONLY)) { spa_v4l2_use_buffers (this, NULL, 0); state->have_format = false; } } if (spa_v4l2_set_format (this, &info, flags & SPA_PORT_FORMAT_FLAG_TEST_ONLY) < 0) return SPA_RESULT_INVALID_MEDIA_TYPE; if (!(flags & SPA_PORT_FORMAT_FLAG_TEST_ONLY)) { state->current_format = info; state->have_format = true; update_state (this, SPA_NODE_STATE_READY); } return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_port_get_format (SpaNode *node, SpaDirection direction, uint32_t port_id, const SpaFormat **format) { SpaV4l2Source *this; SpaV4l2State *state; SpaPODBuilder b = { NULL, }; SpaPODFrame f[2]; if (node == NULL || format == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); if (!CHECK_PORT (this, direction, port_id)) return SPA_RESULT_INVALID_PORT; state = &this->state[port_id]; if (!state->have_format) return SPA_RESULT_NO_FORMAT; b.data = state->format_buffer; b.size = sizeof (state->format_buffer); spa_pod_builder_push_format (&b, &f[0], state->current_format.media_type, state->current_format.media_subtype); if (state->current_format.media_subtype == this->uri.media_subtypes.raw) { spa_pod_builder_add (&b, PROP (&f[1], this->uri.prop_video.format, SPA_POD_TYPE_URI, state->current_format.info.raw.format), PROP (&f[1], this->uri.prop_video.size, -SPA_POD_TYPE_RECTANGLE, &state->current_format.info.raw.size), PROP (&f[1], this->uri.prop_video.framerate, -SPA_POD_TYPE_FRACTION, &state->current_format.info.raw.framerate), 0); } else if (state->current_format.media_subtype == this->uri.media_subtypes_video.mjpg || state->current_format.media_subtype == this->uri.media_subtypes_video.jpeg) { spa_pod_builder_add (&b, PROP (&f[1], this->uri.prop_video.size, -SPA_POD_TYPE_RECTANGLE, &state->current_format.info.mjpg.size), PROP (&f[1], this->uri.prop_video.framerate, -SPA_POD_TYPE_FRACTION, &state->current_format.info.mjpg.framerate), 0); } else if (state->current_format.media_subtype == this->uri.media_subtypes_video.h264) { spa_pod_builder_add (&b, PROP (&f[1], this->uri.prop_video.size, -SPA_POD_TYPE_RECTANGLE, &state->current_format.info.h264.size), PROP (&f[1], this->uri.prop_video.framerate, -SPA_POD_TYPE_FRACTION, &state->current_format.info.h264.framerate), 0); } else return SPA_RESULT_NO_FORMAT; spa_pod_builder_pop (&b, &f[0]); *format = SPA_POD_BUILDER_DEREF (&b, f[0].ref, SpaFormat); return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_port_get_info (SpaNode *node, SpaDirection direction, uint32_t port_id, const SpaPortInfo **info) { SpaV4l2Source *this; if (node == NULL || info == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); if (!CHECK_PORT (this, direction, port_id)) return SPA_RESULT_INVALID_PORT; *info = &this->state[port_id].info; return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_port_get_props (SpaNode *node, SpaDirection direction, uint32_t port_id, SpaProps **props) { return SPA_RESULT_NOT_IMPLEMENTED; } static SpaResult spa_v4l2_source_node_port_set_props (SpaNode *node, SpaDirection direction, uint32_t port_id, const SpaProps *props) { return SPA_RESULT_NOT_IMPLEMENTED; } static SpaResult spa_v4l2_source_node_port_use_buffers (SpaNode *node, SpaDirection direction, uint32_t port_id, SpaBuffer **buffers, uint32_t n_buffers) { SpaV4l2Source *this; SpaV4l2State *state; SpaResult res; if (node == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); if (!CHECK_PORT (this, direction, port_id)) return SPA_RESULT_INVALID_PORT; state = &this->state[port_id]; if (!state->have_format) return SPA_RESULT_NO_FORMAT; if (state->n_buffers) { if ((res = spa_v4l2_clear_buffers (this)) < 0) return res; } if (buffers != NULL) { if ((res = spa_v4l2_use_buffers (this, buffers, n_buffers)) < 0) return res; } if (state->n_buffers) update_state (this, SPA_NODE_STATE_PAUSED); else update_state (this, SPA_NODE_STATE_READY); return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_port_alloc_buffers (SpaNode *node, SpaDirection direction, uint32_t port_id, SpaAllocParam **params, uint32_t n_params, SpaBuffer **buffers, uint32_t *n_buffers) { SpaV4l2Source *this; SpaV4l2State *state; SpaResult res; if (node == NULL || buffers == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); if (!CHECK_PORT (this, direction, port_id)) return SPA_RESULT_INVALID_PORT; state = &this->state[port_id]; if (!state->have_format) return SPA_RESULT_NO_FORMAT; res = spa_v4l2_alloc_buffers (this, params, n_params, buffers, n_buffers); if (state->n_buffers) { if (state->started) update_state (this, SPA_NODE_STATE_STREAMING); else update_state (this, SPA_NODE_STATE_PAUSED); } return res; } static SpaResult spa_v4l2_source_node_port_set_input (SpaNode *node, uint32_t port_id, SpaPortInput *input) { return SPA_RESULT_NOT_IMPLEMENTED; } static SpaResult spa_v4l2_source_node_port_set_output (SpaNode *node, uint32_t port_id, SpaPortOutput *output) { SpaV4l2Source *this; if (node == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); if (!CHECK_PORT (this, SPA_DIRECTION_OUTPUT, port_id)) return SPA_RESULT_INVALID_PORT; this->state[port_id].io = output; return SPA_RESULT_OK; } static SpaResult spa_v4l2_source_node_port_reuse_buffer (SpaNode *node, uint32_t port_id, uint32_t buffer_id) { SpaV4l2Source *this; SpaV4l2State *state; SpaResult res; spa_return_val_if_fail (node != NULL, SPA_RESULT_INVALID_ARGUMENTS); spa_return_val_if_fail (port_id == 0, SPA_RESULT_INVALID_PORT); this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); state = &this->state[port_id]; spa_return_val_if_fail (state->n_buffers > 0, SPA_RESULT_NO_BUFFERS); spa_return_val_if_fail (buffer_id < state->n_buffers, SPA_RESULT_INVALID_BUFFER_ID); res = spa_v4l2_buffer_recycle (this, buffer_id); return res; } static SpaResult spa_v4l2_source_node_port_send_command (SpaNode *node, SpaDirection direction, uint32_t port_id, SpaNodeCommand *command) { SpaV4l2Source *this; SpaResult res; if (node == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (node, SpaV4l2Source, node); if (port_id != 0) return SPA_RESULT_INVALID_PORT; switch (SPA_NODE_COMMAND_TYPE (command)) { case SPA_NODE_COMMAND_PAUSE: res = spa_v4l2_port_set_enabled (this, false); break; case SPA_NODE_COMMAND_START: res = spa_v4l2_port_set_enabled (this, true); break; default: res = SPA_RESULT_NOT_IMPLEMENTED; break; } return res; } static SpaResult spa_v4l2_source_node_process_input (SpaNode *node) { return SPA_RESULT_INVALID_PORT; } static SpaResult spa_v4l2_source_node_process_output (SpaNode *node) { return SPA_RESULT_OK; } static const SpaNode v4l2source_node = { sizeof (SpaNode), NULL, SPA_NODE_STATE_INIT, spa_v4l2_source_node_get_props, spa_v4l2_source_node_set_props, spa_v4l2_source_node_send_command, spa_v4l2_source_node_set_event_callback, spa_v4l2_source_node_get_n_ports, spa_v4l2_source_node_get_port_ids, spa_v4l2_source_node_add_port, spa_v4l2_source_node_remove_port, spa_v4l2_source_node_port_enum_formats, spa_v4l2_source_node_port_set_format, spa_v4l2_source_node_port_get_format, spa_v4l2_source_node_port_get_info, spa_v4l2_source_node_port_get_props, spa_v4l2_source_node_port_set_props, spa_v4l2_source_node_port_use_buffers, spa_v4l2_source_node_port_alloc_buffers, spa_v4l2_source_node_port_set_input, spa_v4l2_source_node_port_set_output, spa_v4l2_source_node_port_reuse_buffer, spa_v4l2_source_node_port_send_command, spa_v4l2_source_node_process_input, spa_v4l2_source_node_process_output, }; static SpaResult spa_v4l2_source_clock_get_props (SpaClock *clock, SpaProps **props) { return SPA_RESULT_NOT_IMPLEMENTED; } static SpaResult spa_v4l2_source_clock_set_props (SpaClock *clock, const SpaProps *props) { return SPA_RESULT_NOT_IMPLEMENTED; } static SpaResult spa_v4l2_source_clock_get_time (SpaClock *clock, int32_t *rate, int64_t *ticks, int64_t *monotonic_time) { SpaV4l2Source *this; SpaV4l2State *state; if (clock == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = SPA_CONTAINER_OF (clock, SpaV4l2Source, clock); state = &this->state[0]; if (rate) *rate = SPA_USEC_PER_SEC; if (ticks) *ticks = state->last_ticks; if (monotonic_time) *monotonic_time = state->last_monotonic; return SPA_RESULT_OK; } static const SpaClock v4l2source_clock = { sizeof (SpaClock), NULL, SPA_CLOCK_STATE_STOPPED, spa_v4l2_source_clock_get_props, spa_v4l2_source_clock_set_props, spa_v4l2_source_clock_get_time, }; static SpaResult spa_v4l2_source_get_interface (SpaHandle *handle, uint32_t interface_id, void **interface) { SpaV4l2Source *this; if (handle == NULL || interface == NULL) return SPA_RESULT_INVALID_ARGUMENTS; this = (SpaV4l2Source *) handle; if (interface_id == this->uri.node) *interface = &this->node; else if (interface_id == this->uri.clock) *interface = &this->clock; else return SPA_RESULT_UNKNOWN_INTERFACE; return SPA_RESULT_OK; } static SpaResult v4l2_source_clear (SpaHandle *handle) { return SPA_RESULT_OK; } static SpaResult v4l2_source_init (const SpaHandleFactory *factory, SpaHandle *handle, const SpaDict *info, const SpaSupport *support, uint32_t n_support) { SpaV4l2Source *this; uint32_t i; const char *str; if (factory == NULL || handle == NULL) return SPA_RESULT_INVALID_ARGUMENTS; handle->get_interface = spa_v4l2_source_get_interface; handle->clear = v4l2_source_clear, this = (SpaV4l2Source *) handle; for (i = 0; i < n_support; i++) { if (strcmp (support[i].uri, SPA_ID_MAP_URI) == 0) this->map = support[i].data; else if (strcmp (support[i].uri, SPA_LOG_URI) == 0) this->log = support[i].data; else if (strcmp (support[i].uri, SPA_LOOP__MainLoop) == 0) this->state[0].main_loop = support[i].data; else if (strcmp (support[i].uri, SPA_LOOP__DataLoop) == 0) this->state[0].data_loop = support[i].data; } if (this->map == NULL) { spa_log_error (this->log, "an id-map is needed"); return SPA_RESULT_ERROR; } if (this->state[0].main_loop == NULL) { spa_log_error (this->log, "a main_loop is needed"); return SPA_RESULT_ERROR; } if (this->state[0].data_loop == NULL) { spa_log_error (this->log, "a data_loop is needed"); return SPA_RESULT_ERROR; } this->uri.node = spa_id_map_get_id (this->map, SPA_NODE_URI); this->uri.clock = spa_id_map_get_id (this->map, SPA_CLOCK_URI); spa_media_types_fill (&this->uri.media_types, this->map); spa_media_subtypes_map (this->map, &this->uri.media_subtypes); spa_media_subtypes_video_map (this->map, &this->uri.media_subtypes_video); spa_prop_video_map (this->map, &this->uri.prop_video); spa_video_formats_map (this->map, &this->uri.video_formats); this->node = v4l2source_node; this->clock = v4l2source_clock; reset_v4l2_source_props (&this->props); this->state[0].log = this->log; this->state[0].info.flags = SPA_PORT_INFO_FLAG_LIVE; this->state[0].export_buf = true; if (info && (str = spa_dict_lookup (info, "device.path"))) { strncpy (this->props.device, str, 63); } update_state (this, SPA_NODE_STATE_CONFIGURE); return SPA_RESULT_OK; } static const SpaInterfaceInfo v4l2_source_interfaces[] = { { SPA_NODE_URI, }, { SPA_CLOCK_URI, }, }; static SpaResult v4l2_source_enum_interface_info (const SpaHandleFactory *factory, const SpaInterfaceInfo **info, uint32_t index) { if (factory == NULL || info == NULL) return SPA_RESULT_INVALID_ARGUMENTS; if (index < 0 || index >= SPA_N_ELEMENTS (v4l2_source_interfaces)) return SPA_RESULT_ENUM_END; *info = &v4l2_source_interfaces[index]; return SPA_RESULT_OK; } const SpaHandleFactory spa_v4l2_source_factory = { "v4l2-source", NULL, sizeof (SpaV4l2Source), v4l2_source_init, v4l2_source_enum_interface_info, };