diff --git a/ap/lib/libtinyalsa/tinypcminfo.c b/ap/lib/libtinyalsa/tinypcminfo.c
new file mode 100644
index 0000000..b2d11bc
--- /dev/null
+++ b/ap/lib/libtinyalsa/tinypcminfo.c
@@ -0,0 +1,203 @@
+/* tinypcminfo.c
+**
+** Copyright 2012, The Android Open Source Project
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of The Android Open Source Project nor the names of
+**       its contributors may be used to endorse or promote products derived
+**       from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND
+** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE
+** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+** DAMAGE.
+*/
+
+#include <tinyalsa/asoundlib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0]))
+#endif
+
+/* The format_lookup is in order of SNDRV_PCM_FORMAT_##index and
+ * matches the grouping in sound/asound.h.  Note this is not
+ * continuous and has an empty gap from (25 - 30).
+ */
+static const char *format_lookup[] = {
+        /*[0] =*/ "S8",
+        "U8",
+        "S16_LE",
+        "S16_BE",
+        "U16_LE",
+        "U16_BE",
+        "S24_LE",
+        "S24_BE",
+        "U24_LE",
+        "U24_BE",
+        "S32_LE",
+        "S32_BE",
+        "U32_LE",
+        "U32_BE",
+        "FLOAT_LE",
+        "FLOAT_BE",
+        "FLOAT64_LE",
+        "FLOAT64_BE",
+        "IEC958_SUBFRAME_LE",
+        "IEC958_SUBFRAME_BE",
+        "MU_LAW",
+        "A_LAW",
+        "IMA_ADPCM",
+        "MPEG",
+        /*[24] =*/ "GSM",
+        [31] = "SPECIAL",
+        "S24_3LE",
+        "S24_3BE",
+        "U24_3LE",
+        "U24_3BE",
+        "S20_3LE",
+        "S20_3BE",
+        "U20_3LE",
+        "U20_3BE",
+        "S18_3LE",
+        "S18_3BE",
+        "U18_3LE",
+        /*[43] =*/ "U18_3BE",
+#if 0
+        /* recent additions, may not be present on local asound.h */
+        "G723_24",
+        "G723_24_1B",
+        "G723_40",
+        "G723_40_1B",
+        "DSD_U8",
+        "DSD_U16_LE",
+#endif
+};
+
+/* Returns a human readable name for the format associated with bit_index,
+ * NULL if bit_index is not known.
+ */
+inline const char *pcm_get_format_name(unsigned bit_index)
+{
+    return bit_index < ARRAY_SIZE(format_lookup) ? format_lookup[bit_index] : NULL;
+}
+
+int main(int argc, char **argv)
+{
+    unsigned int device = 0;
+    unsigned int card = 0;
+    int i;
+
+    if (argc < 3) {
+        fprintf(stderr, "Usage: %s -D card -d device\n", argv[0]);
+        return 1;
+    }
+
+    /* parse command line arguments */
+    argv += 1;
+    while (*argv) {
+        if (strcmp(*argv, "-D") == 0) {
+            argv++;
+            if (*argv)
+                card = atoi(*argv);
+        }
+        if (strcmp(*argv, "-d") == 0) {
+            argv++;
+            if (*argv)
+                device = atoi(*argv);
+        }
+        if (*argv)
+            argv++;
+    }
+
+    printf("Info for card %d, device %d:\n", card, device);
+
+    for (i = 0; i < 2; i++) {
+        struct pcm_params *params;
+        struct pcm_mask *m;
+        unsigned int min;
+        unsigned int max;
+
+        printf("\nPCM %s:\n", i == 0 ? "out" : "in");
+
+        params = pcm_params_get(card, device, i == 0 ? PCM_OUT : PCM_IN);
+        if (params == NULL) {
+            printf("Device does not exist.\n");
+            continue;
+        }
+
+        m = pcm_params_get_mask(params, PCM_PARAM_ACCESS);
+        if (m) { /* bitmask, refer to SNDRV_PCM_ACCESS_*, generally interleaved */
+            printf("      Access:\t%#08x\n", m->bits[0]);
+        }
+        m = pcm_params_get_mask(params, PCM_PARAM_FORMAT);
+        if (m) { /* bitmask, refer to: SNDRV_PCM_FORMAT_* */
+            unsigned j, k, count = 0;
+            const unsigned bitcount = sizeof(m->bits[0]) * 8;
+
+            /* we only check first two format masks (out of 8) - others are zero. */
+            printf("   Format[0]:\t%#08x\n", m->bits[0]);
+            printf("   Format[1]:\t%#08x\n", m->bits[1]);
+
+            /* print friendly format names, if they exist */
+            for (k = 0; k < 2; ++k) {
+                for (j = 0; j < bitcount; ++j) {
+                    const char *name;
+
+                    if (m->bits[k] & (1 << j)) {
+                        name = pcm_get_format_name(j + k*bitcount);
+                        if (name) {
+                            if (count++ == 0) {
+                                printf(" Format Name:\t");
+                            } else {
+                                printf (", ");
+                            }
+                            printf("%s", name);
+                        }
+                    }
+                }
+            }
+            if (count) {
+                printf("\n");
+            }
+        }
+        m = pcm_params_get_mask(params, PCM_PARAM_SUBFORMAT);
+        if (m) { /* bitmask, should be 1: SNDRV_PCM_SUBFORMAT_STD */
+            printf("   Subformat:\t%#08x\n", m->bits[0]);
+        }
+        min = pcm_params_get_min(params, PCM_PARAM_RATE);
+        max = pcm_params_get_max(params, PCM_PARAM_RATE);
+        printf("        Rate:\tmin=%uHz\tmax=%uHz\n", min, max);
+        min = pcm_params_get_min(params, PCM_PARAM_CHANNELS);
+        max = pcm_params_get_max(params, PCM_PARAM_CHANNELS);
+        printf("    Channels:\tmin=%u\t\tmax=%u\n", min, max);
+        min = pcm_params_get_min(params, PCM_PARAM_SAMPLE_BITS);
+        max = pcm_params_get_max(params, PCM_PARAM_SAMPLE_BITS);
+        printf(" Sample bits:\tmin=%u\t\tmax=%u\n", min, max);
+        min = pcm_params_get_min(params, PCM_PARAM_PERIOD_SIZE);
+        max = pcm_params_get_max(params, PCM_PARAM_PERIOD_SIZE);
+        printf(" Period size:\tmin=%u\t\tmax=%u\n", min, max);
+        min = pcm_params_get_min(params, PCM_PARAM_PERIODS);
+        max = pcm_params_get_max(params, PCM_PARAM_PERIODS);
+        printf("Period count:\tmin=%u\t\tmax=%u\n", min, max);
+
+        pcm_params_free(params);
+    }
+
+    return 0;
+}