56 lines
2.4 KiB
C
56 lines
2.4 KiB
C
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#define _POSIX_C_SOURCE 200809L
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/* Accelerated virtual playback: synchronous consumer, no hardware/server. */
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#include "xtc/xtc_realtime.h"
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#include <assert.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char **argv)
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{
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xtc_graph *graph = NULL;
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xtc_realtime *engine = NULL;
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xtc_realtime_status status;
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size_t gain, output, i, j, frames;
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unsigned long blocks = 1000000, iterations = 0;
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uint64_t samples = 0;
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float input[1024], left[1024], right[1024];
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if (argc > 2) return 1;
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if (argc == 2) {
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char *end;
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blocks = strtoul(argv[1], &end, 10);
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if (!*argv[1] || *end || blocks < 100 || blocks > 100000000) return 1;
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}
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assert(xtc_graph_create(2, &graph) == XTC_OK);
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assert(xtc_graph_add_gain(graph, 0.5f, &gain) == XTC_OK);
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assert(xtc_graph_add_output(graph, &output) == XTC_OK);
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assert(xtc_graph_connect(graph, gain, output) == XTC_OK);
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assert(xtc_realtime_create(48000, 1024, &engine) == XTC_OK);
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assert(xtc_realtime_submit(engine, graph) == XTC_OK);
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for (j = 0; j < 1024; ++j) input[j] = j % 2 ? -0.5f : 0.25f;
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for (i = 0; i < blocks; ++i) {
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static const size_t sizes[] = {31, 128, 1024};
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frames = sizes[i % 3];
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if (i && i % 100 == 0) {
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/* Quiescent control work models stop, seek/wrap and graph restart.
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* No hardware lifecycle claims are made by this test. */
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xtc_realtime_collect(engine);
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assert(xtc_realtime_position(engine, (i % 200) ? 48000 : 0) == XTC_OK);
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assert(xtc_realtime_submit(engine, graph) == XTC_OK);
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++iterations;
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}
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assert(xtc_realtime_process_stereo(engine, input, NULL, NULL, NULL, NULL,
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left, right, frames) == XTC_OK);
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for (j = 0; j < frames; ++j)
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assert(isfinite(left[j]) && left[j] == input[j] * 0.5f && right[j] == left[j]);
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samples += frames;
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}
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assert(xtc_realtime_get_status(engine, &status) == XTC_OK);
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assert(status.last_result == XTC_OK && status.processed_blocks == blocks);
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assert(status.active_revision == status.submitted_revision);
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xtc_realtime_collect(engine);
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xtc_realtime_destroy(engine);
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xtc_graph_destroy(graph);
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printf("Virtual playback: %lu blocks, %.3f audio hours, %lu quiescent seek/rebuild cycles passed.\n",
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blocks, (double)samples / 48000 / 3600, iterations);
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return 0;
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}
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