diff --git a/alsa-audio/.cproject b/alsa-audio/.cproject
new file mode 100644
index 0000000..2ed9456
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+++ b/alsa-audio/.cproject
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diff --git a/alsa-audio/.gitignore b/alsa-audio/.gitignore
new file mode 100644
index 0000000..3df573f
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+++ b/alsa-audio/.gitignore
@@ -0,0 +1 @@
+/Debug/
diff --git a/alsa-audio/.project b/alsa-audio/.project
new file mode 100644
index 0000000..bb24a38
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+++ b/alsa-audio/.project
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+
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+ alsa-audio
+
+
+
+
+
+ org.eclipse.cdt.managedbuilder.core.genmakebuilder
+ clean,full,incremental,
+
+
+
+
+ org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder
+ full,incremental,
+
+
+
+
+
+ org.eclipse.cdt.core.cnature
+ org.eclipse.cdt.managedbuilder.core.managedBuildNature
+ org.eclipse.cdt.managedbuilder.core.ScannerConfigNature
+
+
diff --git a/alsa-audio/.settings/language.settings.xml b/alsa-audio/.settings/language.settings.xml
new file mode 100644
index 0000000..e116f0e
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+++ b/alsa-audio/.settings/language.settings.xml
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diff --git a/alsa-audio/monowavplayback.c b/alsa-audio/monowavplayback.c
new file mode 100644
index 0000000..fb81440
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+++ b/alsa-audio/monowavplayback.c
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+#include
+#include
+
+static unsigned int rate = 44100;
+
+int main(int argc, char *argv[])
+{
+ FILE *fp;
+ int dir;
+ int err;
+ int size;
+ long loops;
+ unsigned int rrate, val;
+ char *buffer;
+ char devname[32] = {0};
+ snd_pcm_t *handle;
+ snd_pcm_hw_params_t *params;
+ snd_pcm_uframes_t frames;
+
+ if (argc < 3) {
+ printf("Usage: %s \n", argv[0]);
+ exit(EXIT_FAILURE);
+ }
+
+ if (argc >= 2) {
+ fp = fopen(argv[1], "r");
+ if (!fp) {
+ printf("Could not open file %s\n", argv[1]);
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ if (argc == 4) {
+ rate = atoi(argv[3]);
+ printf("Requested playback rate: %d\n", rate);
+ }
+
+ printf("Module Name: %s\n", argv[2]);
+
+ if (!strcmp("colibri-vf", argv[2]))
+ strcpy(devname, "default:CARD=Audio");
+ else if (!strcmp("apalis-imx6", argv[2]))
+ strcpy(devname, "default:CARD=imx6qapalissgtl");
+ else if (!strcmp("colibri-imx6", argv[2]))
+ strcpy(devname, "default:CARD=imx6qcolibrisgtl");
+ else if (!strcmp("colibri-t20", argv[2]))
+ strcpy(devname, "default:CARD=colibrit20wm971");
+ else if (!strcmp("colibri-t30", argv[2]))
+ strcpy(devname, "default:CARD=colibrit30sgtl5");
+
+ err = snd_pcm_open(&handle, devname, SND_PCM_STREAM_PLAYBACK, 0);
+ if (err < 0) {
+ fprintf(stderr, "unable to open pcm device: %s\n", snd_strerror(err));
+ exit(EXIT_FAILURE);
+ }
+
+ snd_pcm_hw_params_alloca(¶ms);
+
+ err = snd_pcm_hw_params_any(handle, params);
+ if (err < 0) {
+ printf("Broken configuration for playback: no configurations available: %s\n", snd_strerror(err));
+ return err;
+ }
+
+ err = snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);
+ if (err < 0) {
+ printf("Resampling setup failed for playback: %s\n", snd_strerror(err));
+ return err;
+ }
+
+ err = snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE);
+ if (err < 0) {
+ printf("Sample format not available for playback: %s\n", snd_strerror(err));
+ return err;
+ }
+
+ err = snd_pcm_hw_params_set_channels(handle, params, 1);
+ if (err < 0) {
+ printf("Channels count (%i) not available for playbacks: %s\n", 1, snd_strerror(err));
+ return err;
+ }
+
+ rrate = rate;
+ err = snd_pcm_hw_params_set_rate_near(handle, params, &rrate, 0);
+ if (err < 0) {
+ printf("Rate %iHz not available for playback: %s\n", rrate, snd_strerror(err));
+ return err;
+ }
+
+ if (rrate != rate) {
+ printf("Rate doesn't match (requested %iHz, get %iHz)\n", rate, err);
+ return -EINVAL;
+ }
+
+ err = snd_pcm_hw_params(handle, params);
+ if (err < 0) {
+ fprintf(stderr, "unable to set hw parameters: %s\n",
+ snd_strerror(err));
+ exit(EXIT_FAILURE);
+ }
+
+ /* Use a buffer large enough to hold one period */
+ snd_pcm_hw_params_get_period_size(params, &frames, &dir);
+ //size = frames * 4; /* 2 bytes/sample, 2 channels */
+ size = frames * 2; /* 2 bytes/sample, 1 channel */
+ buffer = (char *) malloc(size);
+ if (!buffer) {
+ snd_pcm_drain(handle);
+ snd_pcm_close(handle);
+ fclose(fp);
+ return -ENOMEM;
+ }
+
+ /* We want to loop for 5 seconds */
+ err = snd_pcm_hw_params_get_period_time(params, &val, &dir);
+ if (err < 0) {
+ printf("Unable to get period time for playback: %s\n", snd_strerror(err));
+ return err;
+ }
+
+ /* 5 seconds in microseconds divided by period time */
+ loops = 5000000 / val;
+
+ while (1) {
+ loops--;
+ err = fread(buffer, 1, size, fp);
+ if (err == 0) {
+ fprintf(stderr, "end of file on input\n");
+ break;
+ } else if (err != size)
+ fprintf(stderr, "short read: read %d bytes\n", err);
+
+ err = snd_pcm_writei(handle, buffer, frames);
+ if (err == -EPIPE) {
+ /* EPIPE means underrun */
+ fprintf(stderr, "underrun occurred\n");
+ snd_pcm_prepare(handle);
+ }
+ else if (err < 0)
+ fprintf(stderr, "error from writei: %s\n", snd_strerror(err));
+ else if (err != (int)frames)
+ fprintf(stderr, "short write, write %d frames\n", err);
+ }
+
+ snd_pcm_drain(handle);
+ snd_pcm_close(handle);
+ free(buffer);
+ fclose(fp);
+
+ return 0;
+}