mirror of
https://github.com/mpv-player/mpv
synced 2024-12-26 17:12:36 +00:00
910 lines
26 KiB
C
910 lines
26 KiB
C
#include <math.h>
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#include <stdatomic.h>
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#include <libavutil/hwcontext.h>
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#include "common/common.h"
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#include "common/global.h"
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#include "common/msg.h"
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#include "osdep/threads.h"
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#include "osdep/timer.h"
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#include "video/hwdec.h"
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#include "video/img_format.h"
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#include "filter.h"
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#include "filter_internal.h"
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// Note about connections:
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// They can be confusing, because pins come in pairs, and multiple pins can be
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// transitively connected via mp_pin_connect(). To avoid dealing with this,
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// mp_pin.conn is used to skip redundant connected pins.
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// Consider <1a|1b> a symbol for mp_pin pair #1 and f1 as filter #1. Then:
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// f1 <-> <1a|1b> <-> <2a|2b> <-> <3a|3b> <-> f2
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// would be a connection from 1a to 3b. 1a could be a private pin of f1 (e.g.
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// mp_filter.ppin[0]), and 1b would be the public pin (e.g. mp_filter.pin[0]).
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// A user could have called mp_pin_connect(2a, 1b) mp_pin_connect(3a, 2b)
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// (assuming 1b has dir==MP_PIN_OUT). The end result are the following values:
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// pin user_conn conn manual_connection within_conn (uses mp_pin.data)
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// 1a NULL 3b f1 false no
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// 1b 2a NULL NULL true no
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// 2a 1b NULL NULL true no
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// 2b 3a NULL NULL true no
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// 3a 2b NULL NULL true no
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// 3b NULL 1a f2 false yes
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// The minimal case of f1 <-> <1a|1b> <-> f2 (1b dir=out) would be:
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// 1a NULL 1b f1 false no
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// 1b NULL 1a f2 false yes
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// In both cases, only the final output pin uses mp_pin.data/data_requested.
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struct mp_pin {
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const char *name;
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enum mp_pin_dir dir;
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struct mp_pin *other; // paired mp_pin representing other end
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struct mp_filter *owner;
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struct mp_pin *user_conn; // as set by mp_pin_connect()
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struct mp_pin *conn; // transitive, actual end of the connection
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// Set if the pin is considered connected, but has no user_conn. pin
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// state changes are handled by the given filter. (Defaults to the root
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// filter if the pin is for the user of a filter graph.)
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// As an invariant, conn and manual_connection are both either set or unset.
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struct mp_filter *manual_connection;
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// Set if the pin is indirect part of a connection chain, but not one of
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// the end pins. Basically it's a redundant in-between pin. You never access
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// these with the pin data flow functions, because only the end pins matter.
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// This flag is for checking and enforcing this.
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bool within_conn;
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// This is used for the final output mp_pin in connections only.
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bool data_requested; // true if out wants new data
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struct mp_frame data; // possibly buffered frame (MP_FRAME_NONE if
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// empty, usually only temporary)
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};
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// Root filters create this, all other filters reference it.
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struct filter_runner {
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struct mpv_global *global;
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void (*wakeup_cb)(void *ctx);
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void *wakeup_ctx;
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struct mp_filter *root_filter;
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double max_run_time;
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atomic_bool interrupt_flag;
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// If we're currently running the filter graph (for avoiding recursion).
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bool filtering;
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// If set, recursive filtering was initiated through this pin.
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struct mp_pin *recursive;
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// Set of filters which need process() to be called. A filter is in this
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// array iff mp_filter_internal.pending==true.
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struct mp_filter **pending;
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int num_pending;
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// Any outside pins have changed state.
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bool external_pending;
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// For async notifications only. We don't bother making this fine grained
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// across filters.
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mp_mutex async_lock;
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// Wakeup is pending. Protected by async_lock.
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bool async_wakeup_sent;
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// Similar to pending[]. Uses mp_filter_internal.async_pending. Protected
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// by async_lock.
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struct mp_filter **async_pending;
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int num_async_pending;
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};
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struct mp_filter_internal {
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const struct mp_filter_info *info;
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struct mp_filter *parent;
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struct filter_runner *runner;
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struct mp_filter **children;
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int num_children;
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struct mp_filter *error_handler;
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char *name;
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bool high_priority;
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bool pending;
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bool async_pending;
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bool failed;
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};
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// Called when new work needs to be done on a pin belonging to the filter:
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// - new data was requested
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// - new data has been queued
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// - or just an connect/disconnect/async notification happened
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// This means the process function for this filter has to be called at some
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// point in the future to continue filtering.
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static void add_pending(struct mp_filter *f)
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{
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struct filter_runner *r = f->in->runner;
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if (f->in->pending)
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return;
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// This should probably really be some sort of priority queue, but for now
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// something naive and dumb does the job too.
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f->in->pending = true;
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if (f->in->high_priority) {
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MP_TARRAY_INSERT_AT(r, r->pending, r->num_pending, 0, f);
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} else {
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MP_TARRAY_APPEND(r, r->pending, r->num_pending, f);
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}
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}
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static void add_pending_pin(struct mp_pin *p)
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{
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struct mp_filter *f = p->manual_connection;
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assert(f);
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if (f->in->pending)
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return;
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add_pending(f);
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// Need to tell user that something changed.
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if (f == f->in->runner->root_filter && p != f->in->runner->recursive)
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f->in->runner->external_pending = true;
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}
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// Possibly enter recursive filtering. This is done as convenience for
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// "external" filter users only. (Normal filtering does this iteratively via
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// mp_filter_graph_run() to avoid filter reentrancy issues and deep call
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// stacks.) If the API users uses an external manually connected pin, do
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// recursive filtering as a not strictly necessary feature which makes outside
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// I/O with filters easier.
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static void filter_recursive(struct mp_pin *p)
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{
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struct mp_filter *f = p->conn->manual_connection;
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assert(f);
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struct filter_runner *r = f->in->runner;
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// Never do internal filtering recursively.
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if (r->filtering)
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return;
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assert(!r->recursive);
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r->recursive = p;
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// Also don't lose the pending state, which the user may or may not
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// care about.
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r->external_pending |= mp_filter_graph_run(r->root_filter);
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assert(r->recursive == p);
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r->recursive = NULL;
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}
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void mp_filter_internal_mark_progress(struct mp_filter *f)
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{
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struct filter_runner *r = f->in->runner;
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assert(r->filtering); // only call from f's process()
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add_pending(f);
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}
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// Basically copy the async notifications to the sync ones. Done so that the
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// sync notifications don't need any locking.
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static void flush_async_notifications(struct filter_runner *r)
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{
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mp_mutex_lock(&r->async_lock);
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for (int n = 0; n < r->num_async_pending; n++) {
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struct mp_filter *f = r->async_pending[n];
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add_pending(f);
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f->in->async_pending = false;
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}
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r->num_async_pending = 0;
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r->async_wakeup_sent = false;
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mp_mutex_unlock(&r->async_lock);
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}
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bool mp_filter_graph_run(struct mp_filter *filter)
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{
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struct filter_runner *r = filter->in->runner;
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assert(filter == r->root_filter); // user is supposed to call this on root only
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int64_t end_time = 0;
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if (isfinite(r->max_run_time))
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end_time = mp_time_ns_add(mp_time_ns(), MPMAX(r->max_run_time, 0));
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// (could happen with separate filter graphs calling each other, for now
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// ignore this issue as we don't use such a setup anywhere)
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assert(!r->filtering);
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r->filtering = true;
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flush_async_notifications(r);
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bool exit_req = false;
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while (1) {
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if (atomic_exchange_explicit(&r->interrupt_flag, false,
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memory_order_acq_rel))
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{
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mp_mutex_lock(&r->async_lock);
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if (!r->async_wakeup_sent && r->wakeup_cb)
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r->wakeup_cb(r->wakeup_ctx);
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r->async_wakeup_sent = true;
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mp_mutex_unlock(&r->async_lock);
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exit_req = true;
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}
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if (!r->num_pending) {
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flush_async_notifications(r);
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if (!r->num_pending)
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break;
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}
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struct mp_filter *next = NULL;
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if (r->pending[0]->in->high_priority) {
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next = r->pending[0];
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MP_TARRAY_REMOVE_AT(r->pending, r->num_pending, 0);
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} else if (!exit_req) {
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next = r->pending[r->num_pending - 1];
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r->num_pending -= 1;
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}
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if (!next)
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break;
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next->in->pending = false;
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if (next->in->info->process)
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next->in->info->process(next);
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if (end_time && mp_time_ns() >= end_time)
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mp_filter_graph_interrupt(r->root_filter);
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}
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r->filtering = false;
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bool externals = r->external_pending;
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r->external_pending = false;
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return externals;
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}
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bool mp_pin_can_transfer_data(struct mp_pin *dst, struct mp_pin *src)
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{
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return mp_pin_in_needs_data(dst) && mp_pin_out_request_data(src);
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}
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bool mp_pin_transfer_data(struct mp_pin *dst, struct mp_pin *src)
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{
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if (!mp_pin_can_transfer_data(dst, src))
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return false;
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mp_pin_in_write(dst, mp_pin_out_read(src));
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return true;
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}
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bool mp_pin_in_needs_data(struct mp_pin *p)
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{
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assert(p->dir == MP_PIN_IN);
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assert(!p->within_conn);
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return p->conn && p->conn->manual_connection && p->conn->data_requested;
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}
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bool mp_pin_in_write(struct mp_pin *p, struct mp_frame frame)
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{
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if (!mp_pin_in_needs_data(p) || frame.type == MP_FRAME_NONE) {
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if (frame.type)
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MP_ERR(p->owner, "losing frame on %s\n", p->name);
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mp_frame_unref(&frame);
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return false;
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}
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assert(p->conn->data.type == MP_FRAME_NONE);
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p->conn->data = frame;
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p->conn->data_requested = false;
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add_pending_pin(p->conn);
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filter_recursive(p);
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return true;
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}
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bool mp_pin_out_has_data(struct mp_pin *p)
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{
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assert(p->dir == MP_PIN_OUT);
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assert(!p->within_conn);
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return p->conn && p->conn->manual_connection && p->data.type != MP_FRAME_NONE;
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}
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bool mp_pin_out_request_data(struct mp_pin *p)
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{
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if (mp_pin_out_has_data(p))
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return true;
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if (p->conn && p->conn->manual_connection) {
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if (!p->data_requested) {
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p->data_requested = true;
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add_pending_pin(p->conn);
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}
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filter_recursive(p);
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}
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return mp_pin_out_has_data(p);
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}
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void mp_pin_out_request_data_next(struct mp_pin *p)
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{
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if (mp_pin_out_request_data(p))
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add_pending_pin(p->conn);
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}
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struct mp_frame mp_pin_out_read(struct mp_pin *p)
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{
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if (!mp_pin_out_request_data(p))
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return MP_NO_FRAME;
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struct mp_frame res = p->data;
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p->data = MP_NO_FRAME;
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return res;
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}
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void mp_pin_out_unread(struct mp_pin *p, struct mp_frame frame)
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{
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assert(p->dir == MP_PIN_OUT);
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assert(!p->within_conn);
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assert(p->conn && p->conn->manual_connection);
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// Unread is allowed strictly only if you didn't do anything else with
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// the pin since the time you read it.
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assert(!mp_pin_out_has_data(p));
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assert(!p->data_requested);
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p->data = frame;
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}
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void mp_pin_out_repeat_eof(struct mp_pin *p)
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{
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mp_pin_out_unread(p, MP_EOF_FRAME);
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}
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// Follow mp_pin pairs/connection into the "other" direction of the pin, until
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// the last pin is found. (In the simplest case, this is just p->other.) E.g.:
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// <1a|1b> <-> <2a|2b> <-> <3a|3b>
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// find_connected_end(2b)==1a
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// find_connected_end(1b)==1a
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// find_connected_end(1a)==3b
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static struct mp_pin *find_connected_end(struct mp_pin *p)
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{
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while (1) {
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struct mp_pin *other = p->other;
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if (!other->user_conn)
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return other;
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p = other->user_conn;
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}
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MP_ASSERT_UNREACHABLE();
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}
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// With p being part of a connection, create the pin_connection and set all
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// state flags.
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static void init_connection(struct mp_pin *p)
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{
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struct filter_runner *runner = p->owner->in->runner;
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if (p->dir == MP_PIN_IN)
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p = p->other;
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struct mp_pin *in = find_connected_end(p);
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struct mp_pin *out = find_connected_end(p->other);
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// These are the "outer" pins by definition, they have no user connections.
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assert(!in->user_conn);
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assert(!out->user_conn);
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// This and similar checks enforce the same root filter requirement.
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if (in->manual_connection)
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assert(in->manual_connection->in->runner == runner);
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if (out->manual_connection)
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assert(out->manual_connection->in->runner == runner);
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// Logically, the ends are always manual connections. A pin chain without
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// manual connections at the ends is still disconnected (or if this
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// attempted to extend an existing connection, becomes dangling and gets
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// disconnected).
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if (!in->manual_connection || !out->manual_connection)
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return;
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assert(in->dir == MP_PIN_IN);
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assert(out->dir == MP_PIN_OUT);
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struct mp_pin *cur = in;
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while (cur) {
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assert(!cur->within_conn && !cur->other->within_conn);
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assert(!cur->conn && !cur->other->conn);
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assert(!cur->data_requested); // unused for in pins
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assert(!cur->data.type); // unused for in pins
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assert(!cur->other->data_requested); // unset for unconnected out pins
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assert(!cur->other->data.type); // unset for unconnected out pins
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assert(cur->owner->in->runner == runner);
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cur->within_conn = cur->other->within_conn = true;
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cur = cur->other->user_conn;
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}
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in->conn = out;
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in->within_conn = false;
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out->conn = in;
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out->within_conn = false;
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// Scheduling so far will be messed up.
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add_pending(in->manual_connection);
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add_pending(out->manual_connection);
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}
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void mp_pin_connect(struct mp_pin *dst, struct mp_pin *src)
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{
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assert(src->dir == MP_PIN_OUT);
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assert(dst->dir == MP_PIN_IN);
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if (dst->user_conn == src) {
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assert(src->user_conn == dst);
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return;
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}
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mp_pin_disconnect(src);
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mp_pin_disconnect(dst);
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src->user_conn = dst;
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dst->user_conn = src;
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init_connection(src);
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}
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void mp_pin_set_manual_connection(struct mp_pin *p, bool connected)
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{
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mp_pin_set_manual_connection_for(p, connected ? p->owner->in->parent : NULL);
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}
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void mp_pin_set_manual_connection_for(struct mp_pin *p, struct mp_filter *f)
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{
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if (p->manual_connection == f)
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return;
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if (p->within_conn)
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mp_pin_disconnect(p);
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p->manual_connection = f;
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init_connection(p);
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}
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struct mp_filter *mp_pin_get_manual_connection(struct mp_pin *p)
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{
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return p->manual_connection;
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}
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static void deinit_connection(struct mp_pin *p)
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{
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if (p->dir == MP_PIN_OUT)
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p = p->other;
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p = find_connected_end(p);
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while (p) {
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p->conn = p->other->conn = NULL;
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p->within_conn = p->other->within_conn = false;
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assert(!p->other->data_requested); // unused for in pins
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assert(!p->other->data.type); // unused for in pins
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p->data_requested = false;
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if (p->data.type)
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MP_VERBOSE(p->owner, "dropping frame due to pin disconnect\n");
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if (p->data_requested)
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MP_VERBOSE(p->owner, "dropping request due to pin disconnect\n");
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mp_frame_unref(&p->data);
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p = p->other->user_conn;
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}
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}
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void mp_pin_disconnect(struct mp_pin *p)
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{
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if (!mp_pin_is_connected(p))
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return;
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p->manual_connection = NULL;
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struct mp_pin *conn = p->user_conn;
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if (conn) {
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p->user_conn = NULL;
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conn->user_conn = NULL;
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deinit_connection(conn);
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}
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deinit_connection(p);
|
|
}
|
|
|
|
bool mp_pin_is_connected(struct mp_pin *p)
|
|
{
|
|
return p->user_conn || p->manual_connection;
|
|
}
|
|
|
|
const char *mp_pin_get_name(struct mp_pin *p)
|
|
{
|
|
return p->name;
|
|
}
|
|
|
|
enum mp_pin_dir mp_pin_get_dir(struct mp_pin *p)
|
|
{
|
|
return p->dir;
|
|
}
|
|
|
|
const char *mp_filter_get_name(struct mp_filter *f)
|
|
{
|
|
return f->in->name;
|
|
}
|
|
|
|
const struct mp_filter_info *mp_filter_get_info(struct mp_filter *f)
|
|
{
|
|
return f->in->info;
|
|
}
|
|
|
|
void mp_filter_set_high_priority(struct mp_filter *f, bool pri)
|
|
{
|
|
f->in->high_priority = pri;
|
|
}
|
|
|
|
void mp_filter_set_name(struct mp_filter *f, const char *name)
|
|
{
|
|
talloc_free(f->in->name);
|
|
f->in->name = talloc_strdup(f, name);
|
|
}
|
|
|
|
struct mp_pin *mp_filter_get_named_pin(struct mp_filter *f, const char *name)
|
|
{
|
|
for (int n = 0; n < f->num_pins; n++) {
|
|
if (name && strcmp(f->pins[n]->name, name) == 0)
|
|
return f->pins[n];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void mp_filter_set_error_handler(struct mp_filter *f, struct mp_filter *handler)
|
|
{
|
|
f->in->error_handler = handler;
|
|
}
|
|
|
|
void mp_filter_internal_mark_failed(struct mp_filter *f)
|
|
{
|
|
while (f) {
|
|
f->in->failed = true;
|
|
if (f->in->error_handler) {
|
|
add_pending(f->in->error_handler);
|
|
break;
|
|
}
|
|
f = f->in->parent;
|
|
}
|
|
}
|
|
|
|
bool mp_filter_has_failed(struct mp_filter *filter)
|
|
{
|
|
bool failed = filter->in->failed;
|
|
filter->in->failed = false;
|
|
return failed;
|
|
}
|
|
|
|
static void reset_pin(struct mp_pin *p)
|
|
{
|
|
if (!p->conn || p->dir != MP_PIN_OUT) {
|
|
assert(!p->data.type);
|
|
assert(!p->data_requested);
|
|
}
|
|
mp_frame_unref(&p->data);
|
|
p->data_requested = false;
|
|
}
|
|
|
|
void mp_filter_reset(struct mp_filter *filter)
|
|
{
|
|
for (int n = 0; n < filter->in->num_children; n++)
|
|
mp_filter_reset(filter->in->children[n]);
|
|
|
|
for (int n = 0; n < filter->num_pins; n++) {
|
|
struct mp_pin *p = filter->ppins[n];
|
|
reset_pin(p);
|
|
reset_pin(p->other);
|
|
}
|
|
|
|
if (filter->in->info->reset)
|
|
filter->in->info->reset(filter);
|
|
}
|
|
|
|
struct mp_pin *mp_filter_add_pin(struct mp_filter *f, enum mp_pin_dir dir,
|
|
const char *name)
|
|
{
|
|
assert(dir == MP_PIN_IN || dir == MP_PIN_OUT);
|
|
assert(name && name[0]);
|
|
assert(!mp_filter_get_named_pin(f, name));
|
|
|
|
// "Public" pin
|
|
struct mp_pin *p = talloc_ptrtype(NULL, p);
|
|
*p = (struct mp_pin){
|
|
.name = talloc_strdup(p, name),
|
|
.dir = dir,
|
|
.owner = f,
|
|
.manual_connection = f->in->parent,
|
|
};
|
|
|
|
// "Private" paired pin
|
|
p->other = talloc_ptrtype(NULL, p);
|
|
*p->other = (struct mp_pin){
|
|
.name = p->name,
|
|
.dir = p->dir == MP_PIN_IN ? MP_PIN_OUT : MP_PIN_IN,
|
|
.owner = f,
|
|
.other = p,
|
|
.manual_connection = f,
|
|
};
|
|
|
|
MP_TARRAY_GROW(f, f->pins, f->num_pins);
|
|
MP_TARRAY_GROW(f, f->ppins, f->num_pins);
|
|
f->pins[f->num_pins] = p;
|
|
f->ppins[f->num_pins] = p->other;
|
|
f->num_pins += 1;
|
|
|
|
init_connection(p);
|
|
|
|
return p->other;
|
|
}
|
|
|
|
void mp_filter_remove_pin(struct mp_filter *f, struct mp_pin *p)
|
|
{
|
|
if (!p)
|
|
return;
|
|
|
|
assert(p->owner == f);
|
|
mp_pin_disconnect(p);
|
|
mp_pin_disconnect(p->other);
|
|
|
|
int index = -1;
|
|
for (int n = 0; n < f->num_pins; n++) {
|
|
if (f->ppins[n] == p) {
|
|
index = n;
|
|
break;
|
|
}
|
|
}
|
|
assert(index >= 0);
|
|
|
|
talloc_free(f->pins[index]);
|
|
talloc_free(f->ppins[index]);
|
|
|
|
int count = f->num_pins;
|
|
MP_TARRAY_REMOVE_AT(f->pins, count, index);
|
|
count = f->num_pins;
|
|
MP_TARRAY_REMOVE_AT(f->ppins, count, index);
|
|
f->num_pins -= 1;
|
|
}
|
|
|
|
bool mp_filter_command(struct mp_filter *f, struct mp_filter_command *cmd)
|
|
{
|
|
return f->in->info->command ? f->in->info->command(f, cmd) : false;
|
|
}
|
|
|
|
struct mp_stream_info *mp_filter_find_stream_info(struct mp_filter *f)
|
|
{
|
|
while (f) {
|
|
if (f->stream_info)
|
|
return f->stream_info;
|
|
f = f->in->parent;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
struct mp_hwdec_ctx *mp_filter_load_hwdec_device(struct mp_filter *f, int imgfmt)
|
|
{
|
|
struct mp_stream_info *info = mp_filter_find_stream_info(f);
|
|
if (!info || !info->hwdec_devs)
|
|
return NULL;
|
|
|
|
struct hwdec_imgfmt_request params = {
|
|
.imgfmt = imgfmt,
|
|
.probing = false,
|
|
};
|
|
hwdec_devices_request_for_img_fmt(info->hwdec_devs, ¶ms);
|
|
|
|
return hwdec_devices_get_by_imgfmt(info->hwdec_devs, imgfmt);
|
|
}
|
|
|
|
static void filter_wakeup(struct mp_filter *f, bool mark_only)
|
|
{
|
|
struct filter_runner *r = f->in->runner;
|
|
mp_mutex_lock(&r->async_lock);
|
|
if (!f->in->async_pending) {
|
|
f->in->async_pending = true;
|
|
// (not using a talloc parent for thread safety reasons)
|
|
MP_TARRAY_APPEND(NULL, r->async_pending, r->num_async_pending, f);
|
|
}
|
|
if (!mark_only && !r->async_wakeup_sent) {
|
|
if (r->wakeup_cb)
|
|
r->wakeup_cb(r->wakeup_ctx);
|
|
r->async_wakeup_sent = true;
|
|
}
|
|
mp_mutex_unlock(&r->async_lock);
|
|
}
|
|
|
|
void mp_filter_wakeup(struct mp_filter *f)
|
|
{
|
|
filter_wakeup(f, false);
|
|
}
|
|
|
|
void mp_filter_mark_async_progress(struct mp_filter *f)
|
|
{
|
|
filter_wakeup(f, true);
|
|
}
|
|
|
|
void mp_filter_graph_set_max_run_time(struct mp_filter *f, double seconds)
|
|
{
|
|
struct filter_runner *r = f->in->runner;
|
|
assert(f == r->root_filter); // user is supposed to call this on root only
|
|
r->max_run_time = seconds;
|
|
}
|
|
|
|
void mp_filter_graph_interrupt(struct mp_filter *f)
|
|
{
|
|
struct filter_runner *r = f->in->runner;
|
|
assert(f == r->root_filter); // user is supposed to call this on root only
|
|
atomic_store(&r->interrupt_flag, true);
|
|
}
|
|
|
|
void mp_filter_free_children(struct mp_filter *f)
|
|
{
|
|
while(f->in->num_children)
|
|
talloc_free(f->in->children[0]);
|
|
}
|
|
|
|
static void filter_destructor(void *p)
|
|
{
|
|
struct mp_filter *f = p;
|
|
struct filter_runner *r = f->in->runner;
|
|
|
|
if (f->in->info->destroy)
|
|
f->in->info->destroy(f);
|
|
|
|
// For convenience, free child filters.
|
|
mp_filter_free_children(f);
|
|
|
|
while (f->num_pins)
|
|
mp_filter_remove_pin(f, f->ppins[0]);
|
|
|
|
// Just make sure the filter is not still in the async notifications set.
|
|
// There will be no more new notifications at this point (due to destroy()).
|
|
flush_async_notifications(r);
|
|
|
|
for (int n = 0; n < r->num_pending; n++) {
|
|
if (r->pending[n] == f) {
|
|
MP_TARRAY_REMOVE_AT(r->pending, r->num_pending, n);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (f->in->parent) {
|
|
struct mp_filter_internal *p_in = f->in->parent->in;
|
|
for (int n = 0; n < p_in->num_children; n++) {
|
|
if (p_in->children[n] == f) {
|
|
MP_TARRAY_REMOVE_AT(p_in->children, p_in->num_children, n);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (r->root_filter == f) {
|
|
assert(!f->in->parent);
|
|
mp_mutex_destroy(&r->async_lock);
|
|
talloc_free(r->async_pending);
|
|
talloc_free(r);
|
|
}
|
|
}
|
|
|
|
|
|
struct mp_filter *mp_filter_create_with_params(struct mp_filter_params *params)
|
|
{
|
|
struct mp_filter *f = talloc(NULL, struct mp_filter);
|
|
talloc_set_destructor(f, filter_destructor);
|
|
*f = (struct mp_filter){
|
|
.priv = params->info->priv_size ?
|
|
talloc_zero_size(f, params->info->priv_size) : NULL,
|
|
.global = params->global,
|
|
.in = talloc(f, struct mp_filter_internal),
|
|
};
|
|
*f->in = (struct mp_filter_internal){
|
|
.info = params->info,
|
|
.parent = params->parent,
|
|
.runner = params->parent ? params->parent->in->runner : NULL,
|
|
};
|
|
|
|
if (!f->in->runner) {
|
|
assert(params->global);
|
|
|
|
f->in->runner = talloc(NULL, struct filter_runner);
|
|
*f->in->runner = (struct filter_runner){
|
|
.global = params->global,
|
|
.root_filter = f,
|
|
.max_run_time = INFINITY,
|
|
};
|
|
mp_mutex_init(&f->in->runner->async_lock);
|
|
}
|
|
|
|
if (!f->global)
|
|
f->global = f->in->runner->global;
|
|
|
|
if (f->in->parent) {
|
|
struct mp_filter_internal *parent = f->in->parent->in;
|
|
MP_TARRAY_APPEND(parent, parent->children, parent->num_children, f);
|
|
f->log = mp_log_new(f, f->global->log, params->info->name);
|
|
} else {
|
|
f->log = mp_log_new(f, f->global->log, "!root");
|
|
}
|
|
|
|
if (f->in->info->init) {
|
|
if (!f->in->info->init(f, params)) {
|
|
talloc_free(f);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return f;
|
|
}
|
|
|
|
struct mp_filter *mp_filter_create(struct mp_filter *parent,
|
|
const struct mp_filter_info *info)
|
|
{
|
|
assert(parent);
|
|
assert(info);
|
|
struct mp_filter_params params = {
|
|
.info = info,
|
|
.parent = parent,
|
|
};
|
|
return mp_filter_create_with_params(¶ms);
|
|
}
|
|
|
|
// (the root filter is just a dummy filter - nothing special about it, except
|
|
// that it has no parent, and serves as manual connection for "external" pins)
|
|
static const struct mp_filter_info filter_root = {
|
|
.name = "root",
|
|
};
|
|
|
|
struct mp_filter *mp_filter_create_root(struct mpv_global *global)
|
|
{
|
|
struct mp_filter_params params = {
|
|
.info = &filter_root,
|
|
.global = global,
|
|
};
|
|
return mp_filter_create_with_params(¶ms);
|
|
}
|
|
|
|
void mp_filter_graph_set_wakeup_cb(struct mp_filter *root,
|
|
void (*wakeup_cb)(void *ctx), void *ctx)
|
|
{
|
|
struct filter_runner *r = root->in->runner;
|
|
assert(root == r->root_filter); // user is supposed to call this on root only
|
|
mp_mutex_lock(&r->async_lock);
|
|
r->wakeup_cb = wakeup_cb;
|
|
r->wakeup_ctx = ctx;
|
|
mp_mutex_unlock(&r->async_lock);
|
|
}
|
|
|
|
static const char *filt_name(struct mp_filter *f)
|
|
{
|
|
return f ? f->in->info->name : "-";
|
|
}
|
|
|
|
static void dump_pin_state(struct mp_filter *f, struct mp_pin *pin)
|
|
{
|
|
MP_WARN(f, " [%p] %s %s c=%s[%p] f=%s[%p] m=%s[%p] %s %s %s\n",
|
|
pin, pin->name, pin->dir == MP_PIN_IN ? "->" : "<-",
|
|
pin->user_conn ? filt_name(pin->user_conn->owner) : "-", pin->user_conn,
|
|
pin->conn ? filt_name(pin->conn->owner) : "-", pin->conn,
|
|
filt_name(pin->manual_connection), pin->manual_connection,
|
|
pin->within_conn ? "(within)" : "",
|
|
pin->data_requested ? "(request)" : "",
|
|
mp_frame_type_str(pin->data.type));
|
|
}
|
|
|
|
void mp_filter_dump_states(struct mp_filter *f)
|
|
{
|
|
MP_WARN(f, "%s[%p] (%s[%p])\n", filt_name(f), f,
|
|
filt_name(f->in->parent), f->in->parent);
|
|
for (int n = 0; n < f->num_pins; n++) {
|
|
dump_pin_state(f, f->pins[n]);
|
|
dump_pin_state(f, f->ppins[n]);
|
|
}
|
|
|
|
for (int n = 0; n < f->in->num_children; n++)
|
|
mp_filter_dump_states(f->in->children[n]);
|
|
}
|