diff options
Diffstat (limited to 'spa/plugins/videoconvert/videoadapter.c')
| -rw-r--r-- | spa/plugins/videoconvert/videoadapter.c | 1671 |
1 files changed, 1671 insertions, 0 deletions
diff --git a/spa/plugins/videoconvert/videoadapter.c b/spa/plugins/videoconvert/videoadapter.c new file mode 100644 index 0000000..2f6f068 --- /dev/null +++ b/spa/plugins/videoconvert/videoadapter.c @@ -0,0 +1,1671 @@ +/* SPA + * + * 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. + */ + +#include <spa/support/plugin.h> +#include <spa/support/log.h> +#include <spa/support/cpu.h> + +#include <spa/node/node.h> +#include <spa/node/io.h> +#include <spa/node/utils.h> +#include <spa/node/keys.h> +#include <spa/utils/names.h> +#include <spa/utils/result.h> +#include <spa/utils/string.h> +#include <spa/buffer/alloc.h> +#include <spa/pod/parser.h> +#include <spa/pod/filter.h> +#include <spa/pod/dynamic.h> +#include <spa/param/param.h> +#include <spa/param/video/format-utils.h> +#include <spa/param/latency-utils.h> +#include <spa/debug/format.h> +#include <spa/debug/pod.h> +#include <spa/debug/log.h> + +#undef SPA_LOG_TOPIC_DEFAULT +#define SPA_LOG_TOPIC_DEFAULT log_topic +static struct spa_log_topic *log_topic = &SPA_LOG_TOPIC(0, "spa.videoadapter"); + +#define DEFAULT_ALIGN 16 + +#define MAX_PORTS 1 + +/** \cond */ + +struct impl { + struct spa_handle handle; + struct spa_node node; + + struct spa_log *log; + struct spa_cpu *cpu; + + uint32_t max_align; + enum spa_direction direction; + + struct spa_node *target; + + struct spa_node *follower; + struct spa_hook follower_listener; + uint32_t follower_flags; + struct spa_video_info follower_current_format; + struct spa_video_info default_format; + + struct spa_handle *hnd_convert; + struct spa_node *convert; + struct spa_hook convert_listener; + uint32_t convert_flags; + + uint32_t n_buffers; + struct spa_buffer **buffers; + + struct spa_io_buffers io_buffers; + struct spa_io_rate_match io_rate_match; + struct spa_io_position *io_position; + + uint64_t info_all; + struct spa_node_info info; +#define IDX_EnumFormat 0 +#define IDX_PropInfo 1 +#define IDX_Props 2 +#define IDX_Format 3 +#define IDX_EnumPortConfig 4 +#define IDX_PortConfig 5 +#define IDX_Latency 6 +#define IDX_ProcessLatency 7 +#define N_NODE_PARAMS 8 + struct spa_param_info params[N_NODE_PARAMS]; + uint32_t convert_params_flags[N_NODE_PARAMS]; + uint32_t follower_params_flags[N_NODE_PARAMS]; + + struct spa_hook_list hooks; + struct spa_callbacks callbacks; + + unsigned int add_listener:1; + unsigned int have_format:1; + unsigned int started:1; + unsigned int driver:1; + unsigned int async:1; + unsigned int passthrough:1; + unsigned int follower_removing:1; +}; + +/** \endcond */ + +static int follower_enum_params(struct impl *this, + uint32_t id, + uint32_t idx, + struct spa_result_node_params *result, + const struct spa_pod *filter, + struct spa_pod_builder *builder) +{ + int res; + if (result->next < 0x100000) { + if (this->convert != NULL && + (res = spa_node_enum_params_sync(this->convert, + id, &result->next, filter, &result->param, builder)) == 1) + return res; + result->next = 0x100000; + } + if (result->next < 0x200000 && this->follower_params_flags[idx] & SPA_PARAM_INFO_READ) { + result->next &= 0xfffff; + if ((res = spa_node_enum_params_sync(this->follower, + id, &result->next, filter, &result->param, builder)) == 1) { + result->next |= 0x100000; + return res; + } + result->next = 0x200000; + } + return 0; +} + +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; + uint8_t buffer[4096]; + struct spa_pod_dynamic_builder b; + 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_log_debug(this->log, "%p: %d id:%u", this, seq, id); + + spa_pod_dynamic_builder_init(&b, buffer, sizeof(buffer), 4096); + + switch (id) { + case SPA_PARAM_EnumPortConfig: + case SPA_PARAM_PortConfig: + if (this->convert == NULL) + return 0; + res = spa_node_enum_params(this->convert, seq, id, start, num, filter); + return res; + case SPA_PARAM_PropInfo: + res = follower_enum_params(this, + id, IDX_PropInfo, &result, filter, &b.b); + break; + case SPA_PARAM_Props: + res = follower_enum_params(this, + id, IDX_Props, &result, filter, &b.b); + break; + case SPA_PARAM_ProcessLatency: + res = follower_enum_params(this, + id, IDX_ProcessLatency, &result, filter, &b.b); + break; + case SPA_PARAM_EnumFormat: + case SPA_PARAM_Format: + case SPA_PARAM_Latency: + res = spa_node_port_enum_params_sync(this->follower, + this->direction, 0, + id, &result.next, filter, &result.param, &b.b); + break; + default: + return -ENOENT; + } + + if (res == 1) { + spa_node_emit_result(&this->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result); + count++; + } + spa_pod_dynamic_builder_clean(&b); + + if (res != 1) + return res; + + if (count != num) + goto next; + + return 0; +} + +static int link_io(struct impl *this) +{ + int res; + + if (this->convert == NULL) + return 0; + + spa_log_debug(this->log, "%p: controls", this); + + spa_zero(this->io_rate_match); + this->io_rate_match.rate = 1.0; + + if ((res = spa_node_port_set_io(this->follower, + this->direction, 0, + SPA_IO_RateMatch, + &this->io_rate_match, sizeof(this->io_rate_match))) < 0) { + spa_log_debug(this->log, "%p: set RateMatch on follower disabled %d %s", this, + res, spa_strerror(res)); + } + else if ((res = spa_node_port_set_io(this->convert, + SPA_DIRECTION_REVERSE(this->direction), 0, + SPA_IO_RateMatch, + &this->io_rate_match, sizeof(this->io_rate_match))) < 0) { + spa_log_warn(this->log, "%p: set RateMatch on convert failed %d %s", this, + res, spa_strerror(res)); + } + + this->io_buffers = SPA_IO_BUFFERS_INIT; + + if ((res = spa_node_port_set_io(this->follower, + this->direction, 0, + SPA_IO_Buffers, + &this->io_buffers, sizeof(this->io_buffers))) < 0) { + spa_log_warn(this->log, "%p: set Buffers on follower failed %d %s", this, + res, spa_strerror(res)); + return res; + } + else if ((res = spa_node_port_set_io(this->convert, + SPA_DIRECTION_REVERSE(this->direction), 0, + SPA_IO_Buffers, + &this->io_buffers, sizeof(this->io_buffers))) < 0) { + spa_log_warn(this->log, "%p: set Buffers on convert failed %d %s", this, + res, spa_strerror(res)); + return res; + } + return 0; +} + +static void emit_node_info(struct impl *this, bool full) +{ + uint32_t i; + uint64_t old = full ? this->info.change_mask : 0; + + spa_log_debug(this->log, "%p: info full:%d change:%08"PRIx64, + this, full, this->info.change_mask); + + if (full) + this->info.change_mask = this->info_all; + if (this->info.change_mask) { + if (this->info.change_mask & SPA_NODE_CHANGE_MASK_PARAMS) { + for (i = 0; i < this->info.n_params; i++) { + if (this->params[i].user > 0) { + this->params[i].flags ^= SPA_PARAM_INFO_SERIAL; + this->params[i].user = 0; + spa_log_debug(this->log, "param %d flags:%08x", + i, this->params[i].flags); + } + } + } + spa_node_emit_info(&this->hooks, &this->info); + this->info.change_mask = old; + } +} + +static int debug_params(struct impl *this, struct spa_node *node, + enum spa_direction direction, uint32_t port_id, uint32_t id, struct spa_pod *filter, + const char *debug, int err) +{ + struct spa_pod_builder b = { 0 }; + uint8_t buffer[4096]; + uint32_t state; + struct spa_pod *param; + int res, count = 0; + + spa_log_error(this->log, "params %s: %d:%d (%s) %s", + spa_debug_type_find_name(spa_type_param, id), + direction, port_id, debug, err ? spa_strerror(err) : "no matching params"); + if (err == -EBUSY) + return 0; + + if (filter) { + spa_log_error(this->log, "with this filter:"); + spa_debug_log_pod(this->log, SPA_LOG_LEVEL_DEBUG, 2, NULL, filter); + } else { + spa_log_error(this->log, "there was no filter"); + } + + state = 0; + while (true) { + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + res = spa_node_port_enum_params_sync(node, + direction, port_id, + id, &state, + NULL, ¶m, &b); + if (res != 1) { + if (res < 0) + spa_log_error(this->log, " error: %s", spa_strerror(res)); + break; + } + spa_log_error(this->log, "unmatched %s %d:", debug, count); + spa_debug_log_pod(this->log, SPA_LOG_LEVEL_DEBUG, 2, NULL, param); + count++; + } + if (count == 0) + spa_log_error(this->log, "could not get any %s", debug); + + return 0; +} + +static int negotiate_buffers(struct impl *this) +{ + uint8_t buffer[4096]; + struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer)); + uint32_t state; + struct spa_pod *param; + int res; + bool follower_alloc, conv_alloc; + uint32_t i, size, buffers, blocks, align, flags, stride = 0; + uint32_t *aligns; + struct spa_data *datas; + uint32_t follower_flags, conv_flags; + + spa_log_debug(this->log, "%p: %d", this, this->n_buffers); + + if (this->target == this->follower) + return 0; + + if (this->n_buffers > 0) + return 0; + + state = 0; + param = NULL; + if ((res = spa_node_port_enum_params_sync(this->follower, + this->direction, 0, + SPA_PARAM_Buffers, &state, + param, ¶m, &b)) < 0) { + if (res == -ENOENT) + param = NULL; + else { + debug_params(this, this->follower, this->direction, 0, + SPA_PARAM_Buffers, param, "follower buffers", res); + return res; + } + } + + state = 0; + if ((res = spa_node_port_enum_params_sync(this->convert, + SPA_DIRECTION_REVERSE(this->direction), 0, + SPA_PARAM_Buffers, &state, + param, ¶m, &b)) != 1) { + debug_params(this, this->convert, + SPA_DIRECTION_REVERSE(this->direction), 0, + SPA_PARAM_Buffers, param, "convert buffers", res); + return -ENOTSUP; + } + if (param == NULL) + return -ENOTSUP; + + spa_pod_fixate(param); + + follower_flags = this->follower_flags; + conv_flags = this->convert_flags; + + follower_alloc = SPA_FLAG_IS_SET(follower_flags, SPA_PORT_FLAG_CAN_ALLOC_BUFFERS); + conv_alloc = SPA_FLAG_IS_SET(conv_flags, SPA_PORT_FLAG_CAN_ALLOC_BUFFERS); + + flags = 0; + if (conv_alloc || follower_alloc) { + flags |= SPA_BUFFER_ALLOC_FLAG_NO_DATA; + if (conv_alloc) + follower_alloc = false; + } + + align = DEFAULT_ALIGN; + + if ((res = spa_pod_parse_object(param, + SPA_TYPE_OBJECT_ParamBuffers, NULL, + SPA_PARAM_BUFFERS_buffers, SPA_POD_Int(&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_align, SPA_POD_OPT_Int(&align))) < 0) + return res; + + spa_log_debug(this->log, "%p: buffers:%d, blocks:%d, size:%d, stride:%d align:%d %d:%d", + this, buffers, blocks, size, stride, align, follower_alloc, conv_alloc); + + align = SPA_MAX(align, this->max_align); + + datas = alloca(sizeof(struct spa_data) * blocks); + memset(datas, 0, sizeof(struct spa_data) * blocks); + aligns = alloca(sizeof(uint32_t) * blocks); + for (i = 0; i < blocks; i++) { + datas[i].type = SPA_DATA_MemPtr; + datas[i].flags = SPA_DATA_FLAG_READWRITE | SPA_DATA_FLAG_DYNAMIC; + datas[i].maxsize = size; + aligns[i] = align; + } + + free(this->buffers); + this->buffers = spa_buffer_alloc_array(buffers, flags, 0, NULL, blocks, datas, aligns); + if (this->buffers == NULL) + return -errno; + this->n_buffers = buffers; + + if ((res = spa_node_port_use_buffers(this->convert, + SPA_DIRECTION_REVERSE(this->direction), 0, + conv_alloc ? SPA_NODE_BUFFERS_FLAG_ALLOC : 0, + this->buffers, this->n_buffers)) < 0) + return res; + + if ((res = spa_node_port_use_buffers(this->follower, + this->direction, 0, + follower_alloc ? SPA_NODE_BUFFERS_FLAG_ALLOC : 0, + this->buffers, this->n_buffers)) < 0) + return res; + + return 0; +} + +static int configure_format(struct impl *this, uint32_t flags, const struct spa_pod *format) +{ + int res; + + spa_log_debug(this->log, "%p: configure format:", this); + if (format) + spa_debug_log_format(this->log, SPA_LOG_LEVEL_DEBUG, 0, NULL, format); + + if ((res = spa_node_port_set_param(this->follower, + this->direction, 0, + SPA_PARAM_Format, flags, + format)) < 0) + return res; + if (res > 0) { + uint8_t buffer[4096]; + struct spa_pod_builder b = { 0 }; + uint32_t state = 0; + struct spa_pod *fmt; + + /* format was changed to nearest compatible format */ + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + + if ((res = spa_node_port_enum_params_sync(this->follower, + this->direction, 0, + SPA_PARAM_Format, &state, + NULL, &fmt, &b)) != 1) + return -EIO; + + format = fmt; + } + + if (this->target != this->follower && this->convert) { + if ((res = spa_node_port_set_param(this->convert, + SPA_DIRECTION_REVERSE(this->direction), 0, + SPA_PARAM_Format, flags, + format)) < 0) + return res; + } + + this->have_format = format != NULL; + if (format == NULL) { + this->n_buffers = 0; + } else { + res = negotiate_buffers(this); + } + + return res; +} + +static int configure_convert(struct impl *this, uint32_t mode) +{ + struct spa_pod_builder b = { 0 }; + uint8_t buffer[1024]; + struct spa_pod *param; + + if (this->convert == NULL) + return 0; + + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + + spa_log_debug(this->log, "%p: configure convert %p", this, this->target); + + param = spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_ParamPortConfig, SPA_PARAM_PortConfig, + SPA_PARAM_PORT_CONFIG_direction, SPA_POD_Id(this->direction), + SPA_PARAM_PORT_CONFIG_mode, SPA_POD_Id(mode)); + + return spa_node_set_param(this->convert, SPA_PARAM_PortConfig, 0, param); +} + +extern const struct spa_handle_factory spa_videoconvert_factory; + +static const struct spa_node_events follower_node_events; + +static int reconfigure_mode(struct impl *this, bool passthrough, + enum spa_direction direction, struct spa_pod *format) +{ + int res = 0; + struct spa_hook l; + + spa_log_info(this->log, "%p: passthrough mode %d", this, passthrough); + + if (this->passthrough != passthrough) { + if (passthrough) { + /* remove converter split/merge ports */ + configure_convert(this, SPA_PARAM_PORT_CONFIG_MODE_none); + } else { + /* remove follower ports */ + this->follower_removing = true; + spa_zero(l); + spa_node_add_listener(this->follower, &l, &follower_node_events, this); + spa_hook_remove(&l); + this->follower_removing = false; + } + } + + /* set new target */ + this->target = passthrough ? this->follower : this->convert; + + if ((res = configure_format(this, SPA_NODE_PARAM_FLAG_NEAREST, format)) < 0) + return res; + + if (this->passthrough != passthrough) { + this->passthrough = passthrough; + if (passthrough) { + /* add follower ports */ + spa_zero(l); + spa_node_add_listener(this->follower, &l, &follower_node_events, this); + spa_hook_remove(&l); + } else { + /* add converter ports */ + configure_convert(this, SPA_PARAM_PORT_CONFIG_MODE_dsp); + link_io(this); + } + } + + this->info.change_mask |= SPA_NODE_CHANGE_MASK_FLAGS | SPA_NODE_CHANGE_MASK_PARAMS; + this->info.flags &= ~SPA_NODE_FLAG_NEED_CONFIGURE; + this->params[IDX_Props].user++; + + emit_node_info(this, false); + + return 0; +} + +static int impl_node_set_param(void *object, uint32_t id, uint32_t flags, + const struct spa_pod *param) +{ + int res = 0, res2 = 0; + struct impl *this = object; + struct spa_video_info info = { 0 }; + + spa_log_debug(this->log, "%p: set param %d", this, id); + + switch (id) { + case SPA_PARAM_Format: + if (this->started) + return -EIO; + if (param == NULL) + return -EINVAL; + + if ((res = spa_format_parse(param, &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(param, &info.info.raw) < 0) + return -EINVAL; + + this->follower_current_format = info; + break; + + case SPA_PARAM_PortConfig: + { + enum spa_direction dir; + enum spa_param_port_config_mode mode; + struct spa_pod *format = NULL; + + if (this->started) { + spa_log_error(this->log, "was started"); + return -EIO; + } + + if (spa_pod_parse_object(param, + SPA_TYPE_OBJECT_ParamPortConfig, NULL, + SPA_PARAM_PORT_CONFIG_direction, SPA_POD_Id(&dir), + SPA_PARAM_PORT_CONFIG_mode, SPA_POD_Id(&mode), + SPA_PARAM_PORT_CONFIG_format, SPA_POD_OPT_Pod(&format)) < 0) + return -EINVAL; + + if (format) { + struct spa_video_info info; + + spa_zero(info); + 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 -ENOTSUP; + + if (spa_format_video_raw_parse(format, &info.info.raw) >= 0) + this->default_format = info; + } + + switch (mode) { + case SPA_PARAM_PORT_CONFIG_MODE_none: + return -ENOTSUP; + case SPA_PARAM_PORT_CONFIG_MODE_passthrough: + if ((res = reconfigure_mode(this, true, dir, format)) < 0) + return res; + break; + case SPA_PARAM_PORT_CONFIG_MODE_convert: + case SPA_PARAM_PORT_CONFIG_MODE_dsp: + if (this->convert == NULL) + return -ENOTSUP; + if ((res = reconfigure_mode(this, false, dir, NULL)) < 0) + return res; + break; + default: + return -EINVAL; + } + + if (this->target != this->follower) { + if ((res = spa_node_set_param(this->target, id, flags, param)) < 0) + return res; + } + break; + } + + case SPA_PARAM_Props: + if (this->target != this->follower) + res = spa_node_set_param(this->target, id, flags, param); + res2 = spa_node_set_param(this->follower, id, flags, param); + if (res < 0 && res2 < 0) + return res; + res = 0; + break; + case SPA_PARAM_ProcessLatency: + res = spa_node_set_param(this->follower, id, flags, param); + break; + default: + res = -ENOTSUP; + break; + } + return res; +} + +static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size) +{ + struct impl *this = object; + int res = 0; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + switch (id) { + case SPA_IO_Position: + this->io_position = data; + break; + default: + break; + } + + if (this->target) + res = spa_node_set_io(this->target, id, data, size); + + if (this->target != this->follower) + res = spa_node_set_io(this->follower, id, data, size); + + return res; +} + +static struct spa_pod *merge_objects(struct impl *this, struct spa_pod_builder *b, uint32_t id, + struct spa_pod_object *o1, struct spa_pod_object *o2) +{ + const struct spa_pod_prop *p1, *p2; + struct spa_pod_frame f; + struct spa_pod_builder_state state; + int res = 0; + + if (o2 == NULL || SPA_POD_TYPE(o1) != SPA_POD_TYPE(o2)) + return (struct spa_pod*)o1; + + spa_pod_builder_push_object(b, &f, o1->body.type, o1->body.id); + p2 = NULL; + SPA_POD_OBJECT_FOREACH(o1, p1) { + p2 = spa_pod_object_find_prop(o2, p2, p1->key); + if (p2 != NULL) { + spa_pod_builder_get_state(b, &state); + res = spa_pod_filter_prop(b, p1, p2); + if (res < 0) + spa_pod_builder_reset(b, &state); + } + if (p2 == NULL || res < 0) + spa_pod_builder_raw_padded(b, p1, SPA_POD_PROP_SIZE(p1)); + } + p1 = NULL; + SPA_POD_OBJECT_FOREACH(o2, p2) { + p1 = spa_pod_object_find_prop(o1, p1, p2->key); + if (p1 != NULL) + continue; + spa_pod_builder_raw_padded(b, p2, SPA_POD_PROP_SIZE(p2)); + } + return spa_pod_builder_pop(b, &f); +} + +static int negotiate_format(struct impl *this) +{ + uint32_t state; + struct spa_pod *format, *def; + uint8_t buffer[4096]; + struct spa_pod_builder b = { 0 }; + int res; + + if (this->have_format) + return 0; + + if (this->target == this->follower) + return 0; + + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + + spa_log_debug(this->log, "%p: negiotiate", this); + + spa_node_send_command(this->follower, + &SPA_NODE_COMMAND_INIT(SPA_NODE_COMMAND_ParamBegin)); + + state = 0; + format = NULL; + if ((res = spa_node_port_enum_params_sync(this->follower, + this->direction, 0, + SPA_PARAM_EnumFormat, &state, + format, &format, &b)) < 0) { + if (res == -ENOENT) + format = NULL; + else { + debug_params(this, this->follower, this->direction, 0, + SPA_PARAM_EnumFormat, format, "follower format", res); + goto done; + } + } + if (this->convert) { + state = 0; + if ((res = spa_node_port_enum_params_sync(this->convert, + SPA_DIRECTION_REVERSE(this->direction), 0, + SPA_PARAM_EnumFormat, &state, + format, &format, &b)) != 1) { + debug_params(this, this->convert, + SPA_DIRECTION_REVERSE(this->direction), 0, + SPA_PARAM_EnumFormat, format, "convert format", res); + res = -ENOTSUP; + goto done; + } + } + if (format == NULL) { + res = -ENOTSUP; + goto done; + } + + def = spa_format_video_raw_build(&b, + SPA_PARAM_Format, &this->default_format.info.raw); + + format = merge_objects(this, &b, SPA_PARAM_Format, + (struct spa_pod_object*)format, + (struct spa_pod_object*)def); + + spa_pod_fixate(format); + + res = configure_format(this, SPA_NODE_PARAM_FLAG_NEAREST, format); + +done: + spa_node_send_command(this->follower, + &SPA_NODE_COMMAND_INIT(SPA_NODE_COMMAND_ParamEnd)); + + return res; +} + + +static int impl_node_send_command(void *object, const struct spa_command *command) +{ + struct impl *this = object; + int res; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + spa_log_debug(this->log, "%p: command %d", this, SPA_NODE_COMMAND_ID(command)); + + switch (SPA_NODE_COMMAND_ID(command)) { + case SPA_NODE_COMMAND_Start: + if ((res = negotiate_format(this)) < 0) + return res; + if ((res = negotiate_buffers(this)) < 0) + return res; + break; + case SPA_NODE_COMMAND_Suspend: + configure_format(this, 0, NULL); + SPA_FALLTHROUGH + case SPA_NODE_COMMAND_Pause: + this->started = false; + break; + case SPA_NODE_COMMAND_Flush: + this->io_buffers.status = SPA_STATUS_OK; + break; + default: + break; + } + + if ((res = spa_node_send_command(this->target, command)) < 0) { + spa_log_error(this->log, "%p: can't send command %d: %s", + this, SPA_NODE_COMMAND_ID(command), + spa_strerror(res)); + return res; + } + + if (this->target != this->follower) { + if ((res = spa_node_send_command(this->follower, command)) < 0) { + spa_log_error(this->log, "%p: can't send command %d: %s", + this, SPA_NODE_COMMAND_ID(command), + spa_strerror(res)); + return res; + } + } + switch (SPA_NODE_COMMAND_ID(command)) { + case SPA_NODE_COMMAND_Start: + this->started = true; + break; + } + return res; +} + +static void convert_node_info(void *data, const struct spa_node_info *info) +{ + struct impl *this = data; + uint32_t i; + + spa_log_debug(this->log, "%p: info change:%08"PRIx64, this, + info->change_mask); + + if (info->change_mask & SPA_NODE_CHANGE_MASK_PARAMS) { + for (i = 0; i < info->n_params; i++) { + uint32_t idx; + + switch (info->params[i].id) { + case SPA_PARAM_EnumPortConfig: + idx = IDX_EnumPortConfig; + break; + case SPA_PARAM_PortConfig: + idx = IDX_PortConfig; + break; + case SPA_PARAM_PropInfo: + idx = IDX_PropInfo; + break; + case SPA_PARAM_Props: + idx = IDX_Props; + break; + default: + continue; + } + if (!this->add_listener && + this->convert_params_flags[idx] == info->params[i].flags) + continue; + + this->info.change_mask |= SPA_NODE_CHANGE_MASK_PARAMS; + this->convert_params_flags[idx] = info->params[i].flags; + this->params[idx].flags = + (this->params[idx].flags & SPA_PARAM_INFO_SERIAL) | + (info->params[i].flags & SPA_PARAM_INFO_READWRITE); + + if (!this->add_listener) { + this->params[idx].user++; + spa_log_debug(this->log, "param %d changed", info->params[i].id); + } + } + } + emit_node_info(this, false); +} + +static void convert_port_info(void *data, + enum spa_direction direction, uint32_t port_id, + const struct spa_port_info *info) +{ + struct impl *this = data; + + if (direction != this->direction) { + if (port_id == 0) + return; + else + port_id--; + } + + spa_log_debug(this->log, "%p: port info %d:%d", this, + direction, port_id); + + if (this->target != this->follower) + spa_node_emit_port_info(&this->hooks, direction, port_id, info); +} + +static void convert_result(void *data, int seq, int res, uint32_t type, const void *result) +{ + struct impl *this = data; + + if (this->target == this->follower) + return; + + spa_log_trace(this->log, "%p: result %d %d", this, seq, res); + spa_node_emit_result(&this->hooks, seq, res, type, result); +} + +static const struct spa_node_events convert_node_events = { + SPA_VERSION_NODE_EVENTS, + .info = convert_node_info, + .port_info = convert_port_info, + .result = convert_result, +}; + +static void follower_info(void *data, const struct spa_node_info *info) +{ + struct impl *this = data; + uint32_t i; + + spa_log_debug(this->log, "%p: info change:%08"PRIx64, this, + info->change_mask); + + if (this->follower_removing) + return; + + this->async = (info->flags & SPA_NODE_FLAG_ASYNC) != 0; + + if (info->max_input_ports > 0) + this->direction = SPA_DIRECTION_INPUT; + else + this->direction = SPA_DIRECTION_OUTPUT; + + if (this->direction == SPA_DIRECTION_INPUT) { + this->info.flags |= SPA_NODE_FLAG_IN_PORT_CONFIG; + this->info.max_input_ports = MAX_PORTS; + } else { + this->info.flags |= SPA_NODE_FLAG_OUT_PORT_CONFIG; + this->info.max_output_ports = MAX_PORTS; + } + + spa_log_debug(this->log, "%p: follower info %s", this, + this->direction == SPA_DIRECTION_INPUT ? + "Input" : "Output"); + + if (info->change_mask & SPA_NODE_CHANGE_MASK_PROPS) { + this->info.change_mask |= SPA_NODE_CHANGE_MASK_PROPS; + this->info.props = info->props; + } + if (info->change_mask & SPA_NODE_CHANGE_MASK_PARAMS) { + for (i = 0; i < info->n_params; i++) { + uint32_t idx; + + switch (info->params[i].id) { + case SPA_PARAM_PropInfo: + idx = IDX_PropInfo; + break; + case SPA_PARAM_Props: + idx = IDX_Props; + break; + case SPA_PARAM_ProcessLatency: + idx = IDX_ProcessLatency; + break; + default: + continue; + } + if (!this->add_listener && + this->follower_params_flags[idx] == info->params[i].flags) + continue; + + this->info.change_mask |= SPA_NODE_CHANGE_MASK_PARAMS; + this->follower_params_flags[idx] = info->params[i].flags; + this->params[idx].flags = + (this->params[idx].flags & SPA_PARAM_INFO_SERIAL) | + (info->params[i].flags & SPA_PARAM_INFO_READWRITE); + + if (!this->add_listener) { + this->params[idx].user++; + spa_log_debug(this->log, "param %d changed", info->params[i].id); + } + } + } + emit_node_info(this, false); + + spa_zero(this->info.props); + this->info.change_mask &= ~SPA_NODE_CHANGE_MASK_PROPS; + +} + +static int recalc_latency(struct impl *this, enum spa_direction direction, uint32_t port_id) +{ + struct spa_pod_builder b = { 0 }; + uint8_t buffer[1024]; + struct spa_pod *param; + uint32_t index = 0; + struct spa_latency_info latency; + int res; + + spa_log_debug(this->log, "%p: ", this); + + if (this->target == this->follower) + return 0; + + while (true) { + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + if ((res = spa_node_port_enum_params_sync(this->follower, + direction, port_id, SPA_PARAM_Latency, + &index, NULL, ¶m, &b)) != 1) + return res; + if ((res = spa_latency_parse(param, &latency)) < 0) + return res; + if (latency.direction == direction) + break; + } + if ((res = spa_node_port_set_param(this->target, + SPA_DIRECTION_REVERSE(direction), 0, + SPA_PARAM_Latency, 0, param)) < 0) + return res; + + return 0; +} + +static void follower_port_info(void *data, + enum spa_direction direction, uint32_t port_id, + const struct spa_port_info *info) +{ + struct impl *this = data; + uint32_t i; + int res; + + if (this->follower_removing) { + spa_node_emit_port_info(&this->hooks, direction, port_id, NULL); + return; + } + + spa_log_debug(this->log, "%p: follower port info %s %p %08"PRIx64, this, + this->direction == SPA_DIRECTION_INPUT ? + "Input" : "Output", info, info->change_mask); + + if (info->change_mask & SPA_PORT_CHANGE_MASK_PARAMS) { + for (i = 0; i < info->n_params; i++) { + uint32_t idx; + + switch (info->params[i].id) { + case SPA_PARAM_EnumFormat: + idx = IDX_EnumFormat; + break; + case SPA_PARAM_Format: + idx = IDX_Format; + break; + case SPA_PARAM_Latency: + idx = IDX_Latency; + break; + default: + continue; + } + if (!this->add_listener && + this->follower_params_flags[idx] == info->params[i].flags) + continue; + + this->follower_params_flags[idx] = info->params[i].flags; + this->params[idx].flags = + (this->params[idx].flags & SPA_PARAM_INFO_SERIAL) | + (info->params[i].flags & SPA_PARAM_INFO_READWRITE); + + if (idx == IDX_Latency) { + res = recalc_latency(this, direction, port_id); + spa_log_debug(this->log, "latency: %d (%s)", res, + spa_strerror(res)); + } + + this->info.change_mask |= SPA_NODE_CHANGE_MASK_PARAMS; + if (!this->add_listener) { + this->params[idx].user++; + spa_log_debug(this->log, "param %d changed", info->params[i].id); + } + } + } + emit_node_info(this, false); + + if (this->target == this->follower) + spa_node_emit_port_info(&this->hooks, direction, port_id, info); +} + +static void follower_result(void *data, int seq, int res, uint32_t type, const void *result) +{ + struct impl *this = data; + + if (this->target != this->follower) + return; + + spa_log_trace(this->log, "%p: result %d %d", this, seq, res); + spa_node_emit_result(&this->hooks, seq, res, type, result); +} + +static void follower_event(void *data, const struct spa_event *event) +{ + struct impl *this = data; + + spa_log_trace(this->log, "%p: event %d", this, SPA_EVENT_TYPE(event)); + + switch (SPA_NODE_EVENT_ID(event)) { + case SPA_NODE_EVENT_Error: + /* Forward errors */ + spa_node_emit_event(&this->hooks, event); + break; + default: + /* Ignore other events */ + break; + } +} + +static const struct spa_node_events follower_node_events = { + SPA_VERSION_NODE_EVENTS, + .info = follower_info, + .port_info = follower_port_info, + .result = follower_result, + .event = follower_event, +}; + +static int follower_ready(void *data, int status) +{ + struct impl *this = data; + + spa_log_trace_fp(this->log, "%p: ready %d", this, status); + + if (this->target != this->follower) { + this->driver = true; + + if (this->direction == SPA_DIRECTION_OUTPUT) { + int retry = 8; + while (retry--) { + status = spa_node_process(this->convert); + if (status & SPA_STATUS_HAVE_DATA) + break; + + if (status & SPA_STATUS_NEED_DATA) { + status = spa_node_process(this->follower); + if (!(status & SPA_STATUS_HAVE_DATA)) + break; + } + } + + } + } + + return spa_node_call_ready(&this->callbacks, status); +} + +static int follower_reuse_buffer(void *data, uint32_t port_id, uint32_t buffer_id) +{ + int res; + struct impl *this = data; + + if (this->target != this->follower && this->convert) + res = spa_node_port_reuse_buffer(this->convert, port_id, buffer_id); + else + res = spa_node_call_reuse_buffer(&this->callbacks, port_id, buffer_id); + + return res; +} + +static int follower_xrun(void *data, uint64_t trigger, uint64_t delay, struct spa_pod *info) +{ + struct impl *this = data; + return spa_node_call_xrun(&this->callbacks, trigger, delay, info); +} + +static const struct spa_node_callbacks follower_node_callbacks = { + SPA_VERSION_NODE_CALLBACKS, + .ready = follower_ready, + .reuse_buffer = follower_reuse_buffer, + .xrun = follower_xrun, +}; + +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 l; + struct spa_hook_list save; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + spa_log_trace(this->log, "%p: add listener %p", this, listener); + spa_hook_list_isolate(&this->hooks, &save, listener, events, data); + + if (events->info || events->port_info) { + this->add_listener = true; + + spa_zero(l); + spa_node_add_listener(this->follower, &l, &follower_node_events, this); + spa_hook_remove(&l); + + if (this->convert) { + spa_zero(l); + spa_node_add_listener(this->convert, &l, &convert_node_events, this); + spa_hook_remove(&l); + } + this->add_listener = false; + + emit_node_info(this, 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); + + return spa_node_sync(this->follower, seq); +} + +static int +impl_node_add_port(void *object, enum spa_direction direction, uint32_t port_id, + const struct spa_dict *props) +{ + struct impl *this = object; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + if (direction != this->direction) + return -EINVAL; + + return spa_node_add_port(this->target, direction, port_id, props); +} + +static int +impl_node_remove_port(void *object, enum spa_direction direction, uint32_t port_id) +{ + struct impl *this = object; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + if (direction != this->direction) + return -EINVAL; + + return spa_node_remove_port(this->target, direction, port_id); +} + +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; + + spa_return_val_if_fail(this != NULL, -EINVAL); + spa_return_val_if_fail(num != 0, -EINVAL); + + if (direction != this->direction) + port_id++; + + spa_log_debug(this->log, "%p: %d %u", this, seq, id); + + return spa_node_port_enum_params(this->target, seq, direction, port_id, id, + start, num, filter); +} + +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; + int res; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + spa_log_debug(this->log, " %d %d %d %d", port_id, id, direction, this->direction); + + if (direction != this->direction) + port_id++; + + if ((res = spa_node_port_set_param(this->target, direction, port_id, id, + flags, param)) < 0) + return res; + + if ((id == SPA_PARAM_Latency) && + direction == this->direction) { + if ((res = spa_node_port_set_param(this->follower, direction, 0, id, + flags, param)) < 0) + return res; + } + + 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; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + spa_log_debug(this->log, "set io %d %d %d %d", port_id, id, direction, this->direction); + + if (direction != this->direction) + port_id++; + + return spa_node_port_set_io(this->target, direction, port_id, id, data, size); +} + +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; + int res; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + if (direction != this->direction) + port_id++; + + spa_log_debug(this->log, "%p: %d %d:%d", this, + n_buffers, direction, port_id); + + if ((res = spa_node_port_use_buffers(this->target, + direction, port_id, flags, buffers, n_buffers)) < 0) + return res; + + return res; +} + +static int +impl_node_port_reuse_buffer(void *object, uint32_t port_id, uint32_t buffer_id) +{ + struct impl *this = object; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + return spa_node_port_reuse_buffer(this->target, port_id, buffer_id); +} + +static int impl_node_process(void *object) +{ + struct impl *this = object; + int status = 0, fstatus, retry = 8; + + spa_log_trace_fp(this->log, "%p: process convert:%p driver:%d", + this, this->convert, this->driver); + + if (this->target == this->follower) { + if (this->io_position) + this->io_rate_match.size = this->io_position->clock.duration; + return spa_node_process(this->follower); + } + + if (this->direction == SPA_DIRECTION_INPUT) { + /* an input node (sink). + * First we run the converter to process the input for the follower + * then if it produced data, we run the follower. */ + while (retry--) { + status = this->convert ? spa_node_process(this->convert) : 0; + /* schedule the follower when the converter needed + * a recycled buffer */ + if (status == -EPIPE || status == 0) + status = SPA_STATUS_HAVE_DATA; + else if (status < 0) + break; + + if (status & (SPA_STATUS_HAVE_DATA | SPA_STATUS_DRAINED)) { + /* as long as the converter produced something or + * is drained, process the follower. */ + fstatus = spa_node_process(this->follower); + if (fstatus < 0) { + status = fstatus; + break; + } + /* if the follower doesn't need more data or is + * drained we can stop */ + if ((fstatus & SPA_STATUS_NEED_DATA) == 0 || + (fstatus & SPA_STATUS_DRAINED)) + break; + } + /* the converter needs more data */ + if ((status & SPA_STATUS_NEED_DATA)) + break; + } + } else if (!this->driver) { + bool done = false; + while (retry--) { + /* output node (source). First run the converter to make + * sure we push out any queued data. Then when it needs + * more data, schedule the follower. */ + status = this->convert ? spa_node_process(this->convert) : 0; + if (status == 0) + status = SPA_STATUS_NEED_DATA; + else if (status < 0) + break; + + done = (status & (SPA_STATUS_HAVE_DATA | SPA_STATUS_DRAINED)); + + /* when not async, we can return the data when we are done. + * In async mode we might first need to wake up the follower + * to asynchronously provide more data for the next round. */ + if (!this->async && done) + break; + + if (status & SPA_STATUS_NEED_DATA) { + /* the converter needs more data, schedule the + * follower */ + fstatus = spa_node_process(this->follower); + if (fstatus < 0) { + status = fstatus; + break; + } + /* if the follower didn't produce more data or is + * not drained we can stop now */ + if ((fstatus & (SPA_STATUS_HAVE_DATA | SPA_STATUS_DRAINED)) == 0) + break; + } + /* converter produced something or is drained and we + * scheduled the follower above, we can stop now*/ + if (done) + break; + } + if (!done) + spa_node_call_xrun(&this->callbacks, 0, 0, NULL); + + } else { + status = spa_node_process(this->follower); + } + spa_log_trace_fp(this->log, "%p: process status:%d", this, status); + + this->driver = false; + + return status; +} + +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) +{ + struct impl *this; + + spa_return_val_if_fail(handle != NULL, -EINVAL); + + this = (struct impl *) handle; + + spa_hook_remove(&this->follower_listener); + spa_node_set_callbacks(this->follower, NULL, NULL); + + if (this->hnd_convert) + spa_handle_clear(this->hnd_convert); + + if (this->buffers) + free(this->buffers); + this->buffers = NULL; + + return 0; +} + + +static size_t +impl_get_size(const struct spa_handle_factory *factory, + const struct spa_dict *params) +{ + size_t size = 0; + +#if 0 + size += spa_handle_factory_get_size(&spa_videoconvert_factory, params); +#endif + size += sizeof(struct impl); + + return size; +} + +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; +#if 0 + void *iface; +#endif + const char *str; + + 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); + spa_log_topic_init(this->log, log_topic); + + this->cpu = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_CPU); + + if (info == NULL || + (str = spa_dict_lookup(info, "video.adapt.follower")) == NULL) + return -EINVAL; + + sscanf(str, "pointer:%p", &this->follower); + if (this->follower == NULL) + return -EINVAL; + + if (this->cpu) + this->max_align = spa_cpu_get_max_align(this->cpu); + + spa_hook_list_init(&this->hooks); + + this->node.iface = SPA_INTERFACE_INIT( + SPA_TYPE_INTERFACE_Node, + SPA_VERSION_NODE, + &impl_node, this); + +#if 0 + this->hnd_convert = SPA_PTROFF(this, sizeof(struct impl), struct spa_handle); + spa_handle_factory_init(&spa_videoconvert_factory, + this->hnd_convert, + info, support, n_support); + + spa_handle_get_interface(this->hnd_convert, SPA_TYPE_INTERFACE_Node, &iface); + this->convert = iface; +#endif + this->target = this->convert; + + this->info_all = SPA_NODE_CHANGE_MASK_FLAGS | + SPA_NODE_CHANGE_MASK_PARAMS; + this->info = SPA_NODE_INFO_INIT(); + this->info.flags = SPA_NODE_FLAG_RT | + SPA_NODE_FLAG_NEED_CONFIGURE; + this->params[IDX_EnumFormat] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ); + this->params[IDX_PropInfo] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ); + this->params[IDX_Props] = SPA_PARAM_INFO(SPA_PARAM_Props, SPA_PARAM_INFO_READWRITE); + this->params[IDX_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE); + this->params[IDX_EnumPortConfig] = SPA_PARAM_INFO(SPA_PARAM_EnumPortConfig, SPA_PARAM_INFO_READ); + this->params[IDX_PortConfig] = SPA_PARAM_INFO(SPA_PARAM_PortConfig, SPA_PARAM_INFO_READWRITE); + this->params[IDX_Latency] = SPA_PARAM_INFO(SPA_PARAM_Latency, SPA_PARAM_INFO_READWRITE); + this->params[IDX_ProcessLatency] = SPA_PARAM_INFO(SPA_PARAM_ProcessLatency, SPA_PARAM_INFO_READWRITE); + this->info.params = this->params; + this->info.n_params = N_NODE_PARAMS; + + spa_node_add_listener(this->follower, + &this->follower_listener, &follower_node_events, this); + spa_node_set_callbacks(this->follower, &follower_node_callbacks, this); + + if (this->convert) + spa_node_add_listener(this->convert, + &this->convert_listener, &convert_node_events, this); + + reconfigure_mode(this, true, this->direction, NULL); + + link_io(this); + + 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; +} + +const struct spa_handle_factory spa_videoadapter_factory = { + .version = SPA_VERSION_HANDLE_FACTORY, + .name = SPA_NAME_VIDEO_ADAPT, + .get_size = impl_get_size, + .init = impl_init, + .enum_interface_info = impl_enum_interface_info, +}; 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