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Phase 2.

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Johannes Findeisen 2026-10-26 23:32:04 +01:00
commit 577d80f018
16 changed files with 1100 additions and 41 deletions
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172
tests/unit/test_backend.c Normal file
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/* JACK ABI fake: deterministic fault injection, linked without libjack.
* Processing is driven synchronously here; realtime concurrency is tested
* separately by test_realtime. No fake header replaces installed declarations. */
#include "xtc/xtc_backend.h"
#include <jack/jack.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#define CHECK(c) do { if (!(c)) { fprintf(stderr,"FAIL %s:%d: %s\n",__FILE__,__LINE__,#c); return 1; } } while (0)
static JackProcessCallback process_cb;
static JackSampleRateCallback rate_cb;
static JackBufferSizeCallback size_cb;
static JackXRunCallback xrun_cb;
static JackShutdownCallback shutdown_cb;
static void *context;
static float input[128], output[128];
static int client_token, input_token, output_token;
static int open_fail, register_fail, callback_fail, activate_fail, deactivate_fail, close_fail;
static int active, closed, port_calls, null_buffer;
static unsigned int server_frames = 32U;
jack_client_t *jack_client_open(const char *name, jack_options_t options, jack_status_t *status, ...)
{
(void)name; (void)status;
if (options != JackNoStartServer || open_fail) return NULL;
port_calls = 0;
process_cb = NULL; rate_cb = NULL; size_cb = NULL; xrun_cb = NULL; shutdown_cb = NULL;
return (jack_client_t *)&client_token;
}
int jack_client_close(jack_client_t *client)
{ (void)client; if (close_fail) return -1; active = 0; ++closed; return 0; }
int jack_client_name_size(void) { return 64; }
jack_nframes_t jack_get_sample_rate(jack_client_t *client) { (void)client; return 48000U; }
jack_nframes_t jack_get_buffer_size(jack_client_t *client) { (void)client; return server_frames; }
jack_port_t *jack_port_register(jack_client_t *client, const char *name, const char *type,
unsigned long flags, unsigned long buffer_size)
{
(void)client; (void)name; (void)type; (void)buffer_size;
++port_calls;
if (register_fail == port_calls) return NULL;
return (jack_port_t *)(flags == JackPortIsInput ? &input_token : &output_token);
}
int jack_set_process_callback(jack_client_t *client, JackProcessCallback callback, void *arg)
{ (void)client; process_cb = callback; context = arg; return callback_fail ? -1 : 0; }
int jack_set_sample_rate_callback(jack_client_t *client, JackSampleRateCallback callback, void *arg)
{ (void)client; (void)arg; rate_cb = callback; return 0; }
int jack_set_buffer_size_callback(jack_client_t *client, JackBufferSizeCallback callback, void *arg)
{ (void)client; (void)arg; size_cb = callback; return 0; }
int jack_set_xrun_callback(jack_client_t *client, JackXRunCallback callback, void *arg)
{ (void)client; (void)arg; xrun_cb = callback; return 0; }
void jack_on_shutdown(jack_client_t *client, JackShutdownCallback callback, void *arg)
{ (void)client; (void)arg; shutdown_cb = callback; }
int jack_activate(jack_client_t *client)
{ (void)client; if (activate_fail) return -1; active = 1; return 0; }
int jack_deactivate(jack_client_t *client)
{ (void)client; if (deactivate_fail) return -1; active = 0; return 0; }
void *jack_port_get_buffer(jack_port_t *port, jack_nframes_t frames)
{ (void)frames; if (null_buffer) return NULL; return port == (jack_port_t *)&input_token ? input : output; }
const char *jack_port_name(const jack_port_t *port)
{ return port == (jack_port_t *)&input_token ? "test:input" : "test:output"; }
const char **jack_get_ports(jack_client_t *client, const char *pattern, const char *type, unsigned long flags)
{
const char **list = malloc(2U * sizeof(*list));
(void)client; (void)pattern; (void)type; (void)flags;
if (list != NULL) { list[0] = "fake:audio"; list[1] = NULL; }
return list;
}
void jack_free(void *pointer) { free(pointer); }
int jack_connect(jack_client_t *client, const char *source, const char *dest)
{ (void)client; return strstr(source, "missing") || strstr(dest, "missing") ? -1 : EEXIST; }
int jack_disconnect(jack_client_t *client, const char *source, const char *dest)
{ (void)client; (void)source; (void)dest; return 0; }
static int visit(const char *name, void *arg)
{ if (strcmp(name, "fake:audio") == 0) ++*(int *)arg; return 0; }
int main(void)
{
xtc_backend_config config = {XTC_BACKEND_JACK, "test", 64U, 1U};
xtc_backend *backend = NULL;
xtc_backend_status status;
xtc_graph *graph = NULL;
size_t node, i;
const char *name;
int visits = 0, iteration;
CHECK(xtc_backend_open(NULL, &backend) == XTC_ERR_INVALID_ARGUMENT && backend == NULL);
config.channel_count = 2U;
CHECK(xtc_backend_open(&config, &backend) == XTC_ERR_INVALID_ARGUMENT);
config.channel_count = 1U;
config.kind = (xtc_backend_kind)999;
CHECK(xtc_backend_open(&config, &backend) == XTC_ERR_UNSUPPORTED);
config.kind = XTC_BACKEND_JACK;
open_fail = 1;
CHECK(xtc_backend_open(&config, &backend) == XTC_ERR_IO && backend == NULL);
open_fail = 0;
server_frames = 128U;
CHECK(xtc_backend_open(&config, &backend) == XTC_ERR_CAPACITY && backend == NULL);
server_frames = 32U;
register_fail = 2;
CHECK(xtc_backend_open(&config, &backend) == XTC_ERR_IO && backend == NULL);
register_fail = 0;
callback_fail = 1;
CHECK(xtc_backend_open(&config, &backend) == XTC_ERR_IO && backend == NULL);
close_fail = 1;
CHECK(xtc_backend_open(&config, &backend) == XTC_ERR_IO && backend != NULL);
CHECK(xtc_backend_start(backend) == XTC_ERR_INVALID_STATE);
close_fail = 0;
CHECK(xtc_backend_close(backend) == XTC_OK);
callback_fail = 0;
CHECK(xtc_graph_create(1U, &graph) == XTC_OK);
CHECK(xtc_graph_add_gain(graph, 0.5f, &node) == XTC_OK);
CHECK(xtc_backend_open(&config, &backend) == XTC_OK);
CHECK(xtc_backend_submit(backend, graph) == XTC_OK);
CHECK(xtc_backend_submit(backend, graph) == XTC_ERR_CAPACITY);
CHECK(xtc_backend_port_name(backend, XTC_PORT_OUTPUT, &name) == XTC_OK && strcmp(name,"test:output") == 0);
CHECK(xtc_backend_visit_ports(backend, XTC_PORT_INPUT, visit, &visits) == XTC_OK && visits == 1);
CHECK(xtc_backend_connect(backend, XTC_PORT_OUTPUT, "fake:in") == XTC_ERR_INVALID_STATE);
activate_fail = 1;
CHECK(xtc_backend_start(backend) == XTC_ERR_IO);
activate_fail = 0;
CHECK(xtc_backend_start(backend) == XTC_OK);
CHECK(xtc_backend_start(backend) == XTC_ERR_INVALID_STATE);
CHECK(xtc_backend_connect(backend, XTC_PORT_OUTPUT, "fake:in") == XTC_OK);
CHECK(xtc_backend_connect(backend, XTC_PORT_INPUT, "missing:out") == XTC_ERR_IO);
CHECK(xtc_backend_disconnect(backend, XTC_PORT_OUTPUT, "fake:in") == XTC_OK);
for (i = 0U; i < 128U; ++i) input[i] = 1.0f;
CHECK(process_cb(32U, context) == 0 && output[0] == 0.5f);
CHECK(size_cb(128U, context) == 0);
CHECK(process_cb(128U, context) == 0 && output[127] == 0.0f);
CHECK(xtc_backend_get_status(backend, &status) == XTC_OK && status.process_result == XTC_ERR_CAPACITY);
CHECK(size_cb(16U, context) == 0);
CHECK(process_cb(16U, context) == 0 && output[15] == 0.5f);
CHECK(xrun_cb(context) == 0);
CHECK(xtc_backend_get_status(backend, &status) == XTC_OK && status.xruns == 1U && status.buffer_frames == 16U);
null_buffer = 1;
CHECK(process_cb(16U, context) == 0);
null_buffer = 0;
CHECK(xtc_backend_get_status(backend, &status) == XTC_OK && status.process_result == XTC_ERR_IO);
CHECK(rate_cb(44100U, context) == 0);
CHECK(process_cb(16U, context) == 0 && output[0] == 0.0f);
CHECK(xtc_backend_get_status(backend, &status) == XTC_OK && status.sample_rate_changed && status.sample_rate == 44100U);
CHECK(xtc_backend_submit(backend, graph) == XTC_ERR_INVALID_STATE);
deactivate_fail = 1;
CHECK(xtc_backend_stop(backend) == XTC_ERR_IO);
deactivate_fail = 0;
CHECK(xtc_backend_stop(backend) == XTC_OK && !active);
CHECK(xtc_backend_start(backend) == XTC_ERR_INVALID_STATE);
CHECK(xtc_backend_close(backend) == XTC_OK);
for (iteration = 0; iteration < 100; ++iteration) {
CHECK(xtc_backend_open(&config, &backend) == XTC_OK);
CHECK(xtc_backend_submit(backend, graph) == XTC_OK);
CHECK(xtc_backend_start(backend) == XTC_OK);
CHECK(process_cb(32U, context) == 0);
if (iteration % 2 == 0) {
shutdown_cb(context);
CHECK(xtc_backend_get_status(backend, &status) == XTC_OK && status.server_lost && !status.running);
CHECK(xtc_backend_start(backend) == XTC_ERR_INVALID_STATE);
} else {
CHECK(xtc_backend_stop(backend) == XTC_OK);
CHECK(xtc_backend_start(backend) == XTC_OK);
}
CHECK(xtc_backend_submit(backend, graph) == (iteration % 2 == 0 ? XTC_ERR_INVALID_STATE : XTC_OK));
close_fail = 1;
CHECK(xtc_backend_close(backend) == XTC_ERR_IO);
close_fail = 0;
CHECK(xtc_backend_close(backend) == XTC_OK);
}
CHECK(closed >= 104);
CHECK(xtc_backend_close(NULL) == XTC_OK);
xtc_graph_destroy(graph);
puts("JACK backend fault-injection tests passed.");
return 0;
}

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#define _POSIX_C_SOURCE 200809L
#include "xtc/xtc_realtime.h"
#include <pthread.h>
#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
#define CHECK(c) do { if (!(c)) { fprintf(stderr,"FAIL %s:%d: %s\n",__FILE__,__LINE__,#c); return 1; } } while (0)
typedef struct { xtc_realtime *engine; unsigned int stop, failed; } worker_state;
static void *worker(void *context)
{
worker_state *state = context;
float input[32], output[32];
size_t i;
for (i = 0U; i < 32U; ++i) input[i] = 1.0f;
while (!__atomic_load_n(&state->stop, __ATOMIC_ACQUIRE)) {
if (xtc_realtime_process(state->engine, input, output, 32U) != XTC_OK)
__atomic_store_n(&state->failed, 1U, __ATOMIC_RELAXED);
/* A whole block must come from one plan. No partially edited gains. */
for (i = 0U; i < 32U; ++i)
if ((output[i] != 0.0f && output[i] != 1.0f && output[i] != 2.0f) || output[i] != output[0])
__atomic_store_n(&state->failed, 1U, __ATOMIC_RELAXED);
sched_yield();
}
return NULL;
}
static int run(void)
{
xtc_realtime *engine = NULL;
xtc_graph *one = NULL, *two = NULL;
xtc_realtime_status status;
size_t node, i;
float input[5] = {1,1,1,1,1}, output[5] = {9,9,9,9,9};
pthread_t thread;
worker_state state;
CHECK(xtc_realtime_create(48000.0, 32U, &engine) == XTC_OK);
CHECK(xtc_realtime_process(engine, input, output, 4U) == XTC_OK && output[0] == 0.0f);
CHECK(xtc_graph_create(1U, &one) == XTC_OK);
CHECK(xtc_graph_add_gain(one, 1.0f, &node) == XTC_OK);
CHECK(xtc_graph_create(1U, &two) == XTC_OK);
CHECK(xtc_graph_add_gain(two, 2.0f, &node) == XTC_OK);
CHECK(xtc_realtime_submit(engine, one) == XTC_OK);
CHECK(xtc_realtime_submit(engine, two) == XTC_ERR_CAPACITY);
CHECK(xtc_realtime_process(engine, input, output, 4U) == XTC_OK && output[0] == 1.0f);
CHECK(xtc_realtime_submit(engine, two) == XTC_OK);
CHECK(xtc_realtime_process(engine, input, output, 4U) == XTC_OK && output[0] == 2.0f);
xtc_realtime_collect(engine);
CHECK(xtc_realtime_process(engine, input, output, 0U) == XTC_OK && output[0] == 2.0f);
CHECK(xtc_realtime_get_status(engine, &status) == XTC_OK && status.processed_blocks == 3U);
state.engine = engine; state.stop = 0U; state.failed = 0U;
CHECK(pthread_create(&thread, NULL, worker, &state) == 0);
for (i = 0U; i < 2000U; ++i) {
xtc_result result;
do {
result = xtc_realtime_submit(engine, i % 2U ? one : two);
if (result == XTC_ERR_CAPACITY) sched_yield();
} while (result == XTC_ERR_CAPACITY);
CHECK(result == XTC_OK);
}
__atomic_store_n(&state.stop, 1U, __ATOMIC_RELEASE);
CHECK(pthread_join(thread, NULL) == 0);
CHECK(state.failed == 0U);
CHECK(xtc_realtime_get_status(engine, &status) == XTC_OK && status.processed_blocks > 3U);
xtc_realtime_destroy(engine); /* Also cleans pending and retired plans. */
xtc_graph_destroy(one); xtc_graph_destroy(two);
for (i = 0U; i < 100U; ++i) {
CHECK(xtc_realtime_create(48000.0, 4U, &engine) == XTC_OK);
CHECK(xtc_realtime_process(engine, input, output, 5U) == XTC_ERR_CAPACITY);
CHECK(output[0] == 0.0f && output[4] == 0.0f);
CHECK(xtc_realtime_get_status(engine, &status) == XTC_OK && status.last_result == XTC_ERR_CAPACITY);
xtc_realtime_destroy(engine);
}
return 0;
}
int main(void)
{
CHECK(run() == 0);
puts("Realtime handoff and concurrent replacement tests passed.");
return 0;
}