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https://gitlab.uni-freiburg.de/opensourcevdi/spice
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138c421193
CC test_playback.o test_playback.c: In function ‘playback_timer_cb’: test_playback.c:56:5: warning: implicit declaration of function ‘gettimeofday’
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
#include <stdio.h>
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#include <strings.h>
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#include <sys/select.h>
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#include <sys/time.h>
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#include <math.h>
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#include <spice.h>
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#include "test_util.h"
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#include "basic_event_loop.h"
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/* test the audio playback interface. Really basic no frils test - create
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* a single tone sinus sound (easy to hear clicks if it is generated badly
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* or is transmitted badly).
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*
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* TODO: Was going to do white noise to test compression too.
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*
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* TODO: gstreamer based test (could be used to play music files so
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* it has actual merit. Also possibly to simulate network effects?)
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* */
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SpicePlaybackInstance playback_instance;
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static const SpicePlaybackInterface playback_sif = {
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.base.type = SPICE_INTERFACE_PLAYBACK,
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.base.description = "test playback",
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.base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR,
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.base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR,
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};
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uint32_t *frame;
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uint32_t num_samples;
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SpiceTimer *playback_timer;
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int playback_timer_ms;
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SpiceCoreInterface *core;
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void playback_timer_cb(void *opaque)
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{
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static int t = 0;
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static uint64_t last_sent_usec = 0;
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static uint64_t samples_to_send;
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int i;
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struct timeval cur;
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uint64_t cur_usec;
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uint32_t batches;
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if (!frame) {
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spice_server_playback_get_buffer(&playback_instance, &frame, &num_samples);
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if (frame) {
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playback_timer_ms = num_samples ? 1000*num_samples/SPICE_INTERFACE_PLAYBACK_FREQ : 100;
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} else {
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/* continue waiting until there is a channel */
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core->timer_start(playback_timer, playback_timer_ms);
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return;
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}
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}
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/* we have a channel */
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gettimeofday(&cur, NULL);
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cur_usec = cur.tv_usec + cur.tv_sec * 1e6;
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if (last_sent_usec == 0) {
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samples_to_send = num_samples;
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} else {
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samples_to_send += (cur_usec - last_sent_usec) * SPICE_INTERFACE_PLAYBACK_FREQ / 1e6;
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}
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last_sent_usec = cur_usec;
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batches = samples_to_send / num_samples;
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#if 0
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printf("samples_to_send = %d, batches = %d\n", samples_to_send, batches);
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#endif
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samples_to_send -= num_samples * batches;
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for (;batches > 0 ; --batches) {
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for (i = 0 ; i < num_samples; ++i) {
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frame[i] = (((uint16_t)((1<<14)*sin((t+i)/10))) << 16) + (((uint16_t)((1<<14)*sin((t+i)/10))));
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}
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t += num_samples;
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spice_server_playback_put_samples(&playback_instance, frame);
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}
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core->timer_start(playback_timer, playback_timer_ms);
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}
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int main()
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{
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SpiceServer *server = spice_server_new();
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core = basic_event_loop_init();
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spice_server_set_port(server, 5701);
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spice_server_set_noauth(server);
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spice_server_init(server, core);
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playback_instance.base.sif = &playback_sif.base;
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spice_server_add_interface(server, &playback_instance.base);
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spice_server_playback_start(&playback_instance);
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playback_timer_ms = 100;
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playback_timer = core->timer_add(playback_timer_cb, NULL);
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core->timer_start(playback_timer, playback_timer_ms);
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basic_event_loop_mainloop();
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return 0;
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}
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