code.delx.au - pulseaudio/blob - src/tests/interpol-test.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   PulseAudio is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU Lesser General Public License as published
   6   by the Free Software Foundation; either version 2.1 of the License,
   7   or (at your option) any later version.
   8
   9   PulseAudio is distributed in the hope that it will be useful, but
  10   WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12   General Public License for more details.
  13
  14   You should have received a copy of the GNU Lesser General Public License
  15   along with PulseAudio; if not, write to the Free Software
  16   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  17   USA.
  18 ***/
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include <signal.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include <unistd.h>
  28 #include <assert.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <getopt.h>
  32 #include <math.h>
  33
  34 #include <pulse/pulseaudio.h>
  35 #include <pulse/mainloop.h>
  36
  37 #include <pulsecore/thread.h>
  38
  39 #define INTERPOLATE
  40 //#define CORK
  41
  42 static pa_context *context = NULL;
  43 static pa_stream *stream = NULL;
  44 static pa_mainloop_api *mainloop_api = NULL;
  45 static pa_bool_t playback = TRUE;
  46
  47 static void stream_write_cb(pa_stream *p, size_t nbytes, void *userdata) {
  48     /* Just some silence */
  49     pa_assert_se(pa_stream_write(p, pa_xmalloc0(nbytes), nbytes, pa_xfree, 0, PA_SEEK_RELATIVE) == 0);
  50 }
  51
  52 static void stream_read_cb(pa_stream *p, size_t nbytes, void *userdata) {
  53     /* We don't care, just drop the data */
  54
  55     while (pa_stream_readable_size(p) > 0) {
  56         const void *d;
  57         size_t b;
  58
  59         pa_assert_se(pa_stream_peek(p, &d, &b) == 0);
  60         pa_assert_se(pa_stream_drop(p) == 0);
  61     }
  62 }
  63
  64 static void stream_latency_cb(pa_stream *p, void *userdata) {
  65 #ifndef INTERPOLATE
  66     pa_operation *o;
  67
  68     o = pa_stream_update_timing_info(p, NULL, NULL);
  69     pa_operation_unref(o);
  70 #endif
  71 }
  72
  73 /* This is called whenever the context status changes */
  74 static void context_state_callback(pa_context *c, void *userdata) {
  75     assert(c);
  76
  77     switch (pa_context_get_state(c)) {
  78         case PA_CONTEXT_CONNECTING:
  79         case PA_CONTEXT_AUTHORIZING:
  80         case PA_CONTEXT_SETTING_NAME:
  81             break;
  82
  83         case PA_CONTEXT_READY: {
  84             pa_stream_flags_t flags = PA_STREAM_AUTO_TIMING_UPDATE;
  85
  86             static const pa_sample_spec ss = {
  87                 .format = PA_SAMPLE_S16LE,
  88                 .rate = 44100,
  89                 .channels = 2
  90             };
  91
  92 #ifdef INTERPOLATE
  93             flags |= PA_STREAM_INTERPOLATE_TIMING;
  94 #endif
  95
  96             fprintf(stderr, "Connection established.\n");
  97
  98             stream = pa_stream_new(c, "interpol-test", &ss, NULL);
  99             assert(stream);
 100
 101             if (playback) {
 102                 pa_assert_se(pa_stream_connect_playback(stream, NULL, NULL, flags, NULL, NULL) == 0);
 103                 pa_stream_set_write_callback(stream, stream_write_cb, NULL);
 104             } else {
 105                 pa_assert_se(pa_stream_connect_record(stream, NULL, NULL, flags) == 0);
 106                 pa_stream_set_read_callback(stream, stream_read_cb, NULL);
 107             }
 108
 109             pa_stream_set_latency_update_callback(stream, stream_latency_cb, NULL);
 110
 111             break;
 112         }
 113
 114         case PA_CONTEXT_TERMINATED:
 115             break;
 116
 117         case PA_CONTEXT_FAILED:
 118         default:
 119             fprintf(stderr, "Context error: %s\n", pa_strerror(pa_context_errno(c)));
 120             abort();
 121     }
 122 }
 123
 124 int main(int argc, char *argv[]) {
 125     pa_threaded_mainloop* m = NULL;
 126     int k, r;
 127     struct timeval start, last_info = { 0, 0 };
 128     pa_usec_t old_t = 0, old_rtc = 0;
 129 #ifdef CORK
 130     pa_bool_t corked = FALSE;
 131 #endif
 132
 133     pa_log_set_level(PA_LOG_DEBUG);
 134
 135     playback = argc <= 1 || !pa_streq(argv[1], "-r");
 136
 137     /* Set up a new main loop */
 138     m = pa_threaded_mainloop_new();
 139     assert(m);
 140
 141     mainloop_api = pa_threaded_mainloop_get_api(m);
 142
 143     context = pa_context_new(mainloop_api, argv[0]);
 144     assert(context);
 145
 146     pa_context_set_state_callback(context, context_state_callback, NULL);
 147
 148     r = pa_context_connect(context, NULL, 0, NULL);
 149     assert(r >= 0);
 150
 151     pa_gettimeofday(&start);
 152
 153     r = pa_threaded_mainloop_start(m);
 154     assert(r >= 0);
 155
 156 /* #ifdef CORK */
 157     for (k = 0; k < 20000; k++)
 158 /* #else */
 159 /*     for (k = 0; k < 2000; k++) */
 160 /* #endif */
 161     {
 162         pa_bool_t success = FALSE, changed = FALSE;
 163         pa_usec_t t, rtc;
 164         struct timeval now, tv;
 165         pa_bool_t playing = FALSE;
 166
 167         pa_threaded_mainloop_lock(m);
 168
 169         if (stream) {
 170             const pa_timing_info *info;
 171
 172             if (pa_stream_get_time(stream, &t) >= 0)
 173                 success = TRUE;
 174
 175             if ((info = pa_stream_get_timing_info(stream))) {
 176                 if (memcmp(&last_info, &info->timestamp, sizeof(struct timeval))) {
 177                     changed = TRUE;
 178                     last_info = info->timestamp;
 179                 }
 180                 if (info->playing)
 181                     playing = TRUE;
 182             }
 183         }
 184
 185         pa_threaded_mainloop_unlock(m);
 186
 187         pa_gettimeofday(&now);
 188
 189         if (success) {
 190 #ifdef CORK
 191             pa_bool_t cork_now;
 192 #endif
 193             rtc = pa_timeval_diff(&now, &start);
 194             printf("%i\t%llu\t%llu\t%llu\t%llu\t%lli\t%u\t%u\n", k,
 195                    (unsigned long long) rtc,
 196                    (unsigned long long) t,
 197                    (unsigned long long) (rtc-old_rtc),
 198                    (unsigned long long) (t-old_t),
 199                    (signed long long) rtc - (signed long long) t,
 200                    changed,
 201                    playing);
 202
 203             fflush(stdout);
 204             old_t = t;
 205             old_rtc = rtc;
 206
 207 #ifdef CORK
 208             cork_now = (rtc / (2*PA_USEC_PER_SEC)) % 2 == 1;
 209
 210             if (corked != cork_now) {
 211                 pa_threaded_mainloop_lock(m);
 212                 pa_operation_unref(pa_stream_cork(stream, cork_now, NULL, NULL));
 213                 pa_threaded_mainloop_unlock(m);
 214
 215                 pa_log(cork_now ? "Corking" : "Uncorking");
 216
 217                 corked = cork_now;
 218             }
 219 #endif
 220         }
 221
 222         /* Spin loop, ugly but normal usleep() is just too badly grained */
 223
 224         tv = now;
 225         while (pa_timeval_diff(pa_gettimeofday(&now), &tv) < 1000)
 226             pa_thread_yield();
 227     }
 228
 229     if (m)
 230         pa_threaded_mainloop_stop(m);
 231
 232     if (stream) {
 233         pa_stream_disconnect(stream);
 234         pa_stream_unref(stream);
 235     }
 236
 237     if (context) {
 238         pa_context_disconnect(context);
 239         pa_context_unref(context);
 240     }
 241
 242     if (m)
 243         pa_threaded_mainloop_free(m);
 244
 245     return 0;
 246 }