release-request-49fb627d-ebdd-4558-ae95-935e31212986-for-git_oc-dr1-release-4157297 snap-temp-L13700000079944578
Change-Id: I3d3dc7b8309afbc844dd6f4b1ea8a95fa58e327f
diff --git a/tinycap.c b/tinycap.c
index 3e709b2..fe80de7 100644
--- a/tinycap.c
+++ b/tinycap.c
@@ -32,6 +32,7 @@
#include <stdint.h>
#include <signal.h>
#include <string.h>
+#include <time.h>
#define ID_RIFF 0x46464952
#define ID_WAVE 0x45564157
@@ -61,7 +62,7 @@
unsigned int capture_sample(FILE *file, unsigned int card, unsigned int device,
unsigned int channels, unsigned int rate,
enum pcm_format format, unsigned int period_size,
- unsigned int period_count);
+ unsigned int period_count, unsigned int cap_time);
void sigint_handler(int sig __unused)
{
@@ -80,11 +81,13 @@
unsigned int frames;
unsigned int period_size = 1024;
unsigned int period_count = 4;
+ unsigned int cap_time = 0;
enum pcm_format format;
if (argc < 2) {
- fprintf(stderr, "Usage: %s file.wav [-D card] [-d device] [-c channels] "
- "[-r rate] [-b bits] [-p period_size] [-n n_periods]\n", argv[0]);
+ fprintf(stderr, "Usage: %s file.wav [-D card] [-d device]"
+ " [-c channels] [-r rate] [-b bits] [-p period_size]"
+ " [-n n_periods] [-T capture time]\n", argv[0]);
return 1;
}
@@ -125,6 +128,10 @@
argv++;
if (*argv)
period_count = atoi(*argv);
+ } else if (strcmp(*argv, "-T") == 0) {
+ argv++;
+ if (*argv)
+ cap_time = atoi(*argv);
}
if (*argv)
argv++;
@@ -164,9 +171,11 @@
/* install signal handler and begin capturing */
signal(SIGINT, sigint_handler);
+ signal(SIGHUP, sigint_handler);
+ signal(SIGTERM, sigint_handler);
frames = capture_sample(file, card, device, header.num_channels,
header.sample_rate, format,
- period_size, period_count);
+ period_size, period_count, cap_time);
printf("Captured %d frames\n", frames);
/* write header now all information is known */
@@ -183,13 +192,15 @@
unsigned int capture_sample(FILE *file, unsigned int card, unsigned int device,
unsigned int channels, unsigned int rate,
enum pcm_format format, unsigned int period_size,
- unsigned int period_count)
+ unsigned int period_count, unsigned int cap_time)
{
struct pcm_config config;
struct pcm *pcm;
char *buffer;
unsigned int size;
unsigned int bytes_read = 0;
+ struct timespec end;
+ struct timespec now;
memset(&config, 0, sizeof(config));
config.channels = channels;
@@ -220,16 +231,25 @@
printf("Capturing sample: %u ch, %u hz, %u bit\n", channels, rate,
pcm_format_to_bits(format));
+ clock_gettime(CLOCK_MONOTONIC, &now);
+ end.tv_sec = now.tv_sec + cap_time;
+ end.tv_nsec = now.tv_nsec;
+
while (capturing && !pcm_read(pcm, buffer, size)) {
if (fwrite(buffer, 1, size, file) != size) {
fprintf(stderr,"Error capturing sample\n");
break;
}
bytes_read += size;
+ if (cap_time) {
+ clock_gettime(CLOCK_MONOTONIC, &now);
+ if (now.tv_sec > end.tv_sec ||
+ (now.tv_sec == end.tv_sec && now.tv_nsec >= end.tv_nsec))
+ break;
+ }
}
free(buffer);
pcm_close(pcm);
return pcm_bytes_to_frames(pcm, bytes_read);
}
-
diff --git a/tinyhostless.c b/tinyhostless.c
index 3a63c0e..ba3c9c1 100644
--- a/tinyhostless.c
+++ b/tinyhostless.c
@@ -29,21 +29,27 @@
/* Playback data to a PCM device recorded from a capture PCM device. */
#include <tinyalsa/asoundlib.h>
+#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <signal.h>
-#include <math.h>
+#include <time.h>
#include <unistd.h>
+/* Used when that particular device isn't opened. */
+#define TINYHOSTLESS_DEVICE_UNDEFINED 255
+
static int close_h = 0;
-void play_sample(unsigned int card, unsigned int p_device, unsigned int c_device, unsigned int channels,
- unsigned int rate, unsigned int bits, unsigned int period_size,
- unsigned int period_count, unsigned int play_cap_time);
+int play_sample(unsigned int card, unsigned int p_device,
+ unsigned int c_device, unsigned int channels,
+ unsigned int rate, unsigned int bits, unsigned int period_size,
+ unsigned int period_count, unsigned int play_cap_time,
+ int do_loopback);
-void stream_close(int sig)
+static void stream_close(int sig)
{
/* allow the stream to be closed gracefully */
signal(sig, SIG_IGN);
@@ -53,18 +59,25 @@
int main(int argc, char **argv)
{
unsigned int card = 0;
- unsigned int p_device = 255;
- unsigned int c_device = 255;
- unsigned int period_size = 1024;
+ unsigned int p_device = TINYHOSTLESS_DEVICE_UNDEFINED;
+ unsigned int c_device = TINYHOSTLESS_DEVICE_UNDEFINED;
+ unsigned int period_size = 192;
unsigned int period_count = 4;
unsigned int number_bits = 16;
unsigned int num_channels = 2;
unsigned int sample_rate = 48000;
unsigned int play_cap_time = 0;
+ unsigned int do_loopback = 0;
if (argc < 2) {
- fprintf(stderr, "Usage: %s [-D card] [-P Hostless Playback device] [-C Hostless Capture device] [-p period_size]"
- " [-n n_periods] [-c num_channels] [-r sample_rate] [-T playback/capture time]\n", argv[0]);
+ fprintf(stderr, "Usage: %s [-D card] [-P playback device]"
+ " [-C capture device] [-p period_size] [-n n_periods]"
+ " [-c num_channels] [-r sample_rate] [-l]"
+ " [-T playback/capture time]\n\n"
+ "Used to enable 'hostless' mode for audio devices with a DSP back-end.\n"
+ "Alternatively, specify '-l' for loopback mode: this program will read\n"
+ "from the capture device and write to the playback device.\n",
+ argv[0]);
return 1;
}
@@ -111,72 +124,207 @@
if (*argv)
card = atoi(*argv);
}
+ if (strcmp(*argv, "-l") == 0) {
+ do_loopback = 1;
+ }
if (*argv)
argv++;
}
- printf (" Hostless .. p_device =%d, c_device =%d, num_channel =%d, sample_rate =%d, number_bits =%d, play_cap_time =%d\n", p_device, c_device, num_channels, sample_rate, number_bits, play_cap_time);
+ if (p_device == TINYHOSTLESS_DEVICE_UNDEFINED &&
+ c_device == TINYHOSTLESS_DEVICE_UNDEFINED) {
+ fprintf(stderr, "Specify at least one of -C (capture device) or -P (playback device).\n");
+ return EINVAL;
+ }
- play_sample(card, p_device, c_device, num_channels, sample_rate, number_bits,
- period_size, period_count, play_cap_time);
+ if (do_loopback && (p_device == TINYHOSTLESS_DEVICE_UNDEFINED ||
+ c_device == TINYHOSTLESS_DEVICE_UNDEFINED)) {
+ fprintf(stderr, "Loopback requires both playback and capture devices.\n");
+ return EINVAL;
+ }
- return 0;
+ return play_sample(card, p_device, c_device, num_channels, sample_rate,
+ number_bits, period_size, period_count, play_cap_time,
+ do_loopback);
}
-void play_sample(unsigned int card, unsigned int p_device, unsigned int c_device, unsigned int channels,
- unsigned int rate, unsigned int bits, unsigned int period_size,
- unsigned int period_count, unsigned int play_cap_time)
+static int check_param(struct pcm_params *params, unsigned int param,
+ unsigned int value, char *param_name, char *param_unit)
+{
+ unsigned int min;
+ unsigned int max;
+ int is_within_bounds = 1;
+
+ min = pcm_params_get_min(params, param);
+ if (value < min) {
+ fprintf(stderr, "%s is %u%s, device only supports >= %u%s\n", param_name, value,
+ param_unit, min, param_unit);
+ is_within_bounds = 0;
+ }
+
+ max = pcm_params_get_max(params, param);
+ if (value > max) {
+ fprintf(stderr, "%s is %u%s, device only supports <= %u%s\n", param_name, value,
+ param_unit, max, param_unit);
+ is_within_bounds = 0;
+ }
+
+ return is_within_bounds;
+}
+
+static int check_params(unsigned int card, unsigned int device, unsigned int direction,
+ const struct pcm_config *config)
+{
+ struct pcm_params *params;
+ int can_play;
+ int bits;
+
+ params = pcm_params_get(card, device, direction);
+ if (params == NULL) {
+ fprintf(stderr, "Unable to open PCM %s device %u.\n",
+ direction == PCM_OUT ? "playback" : "capture", device);
+ return 0;
+ }
+
+ switch (config->format) {
+ case PCM_FORMAT_S32_LE:
+ bits = 32;
+ break;
+ case PCM_FORMAT_S24_3LE:
+ bits = 24;
+ break;
+ case PCM_FORMAT_S16_LE:
+ bits = 16;
+ break;
+ default:
+ fprintf(stderr, "Invalid format: %u", config->format);
+ return 0;
+ }
+
+ can_play = check_param(params, PCM_PARAM_RATE, config->rate, "Sample rate", "Hz");
+ can_play &= check_param(params, PCM_PARAM_CHANNELS, config->channels, "Sample", " channels");
+ can_play &= check_param(params, PCM_PARAM_SAMPLE_BITS, bits, "Bitrate", " bits");
+ can_play &= check_param(params, PCM_PARAM_PERIOD_SIZE, config->period_size, "Period size", " frames");
+ can_play &= check_param(params, PCM_PARAM_PERIODS, config->period_count, "Period count", " periods");
+
+ pcm_params_free(params);
+
+ return can_play;
+}
+
+int play_sample(unsigned int card, unsigned int p_device,
+ unsigned int c_device, unsigned int channels,
+ unsigned int rate, unsigned int bits, unsigned int period_size,
+ unsigned int period_count, unsigned int play_cap_time,
+ int do_loopback)
{
struct pcm_config config;
struct pcm *pcm_play =NULL, *pcm_cap=NULL;
-
unsigned int count =0;
+ char *buffer = NULL;
+ int size = 0;
+ int rc = 0;
+ struct timespec end;
+ struct timespec now;
+
+ memset(&config, 0, sizeof(config));
config.channels = channels;
config.rate = rate;
config.period_size = period_size;
config.period_count = period_count;
if (bits == 32)
config.format = PCM_FORMAT_S32_LE;
+ else if (bits == 24)
+ config.format = PCM_FORMAT_S24_3LE;
else if (bits == 16)
config.format = PCM_FORMAT_S16_LE;
config.start_threshold = 0;
- config.stop_threshold = INT_MAX;
+ config.stop_threshold = 0;
config.avail_min = 0;
- if(p_device < 255 ) {
+ if(p_device < TINYHOSTLESS_DEVICE_UNDEFINED ) {
+ if (!check_params(card, p_device, PCM_OUT, &config))
+ return EINVAL;
pcm_play = pcm_open(card, p_device, PCM_OUT, &config);
if (!pcm_play || !pcm_is_ready(pcm_play)) {
- fprintf(stderr, "Unable to open PCM device %u (%s)\n",
- p_device, pcm_get_error(pcm_play));
- return;
+ fprintf(stderr, "Unable to open PCM playback device %u (%s)\n",
+ p_device, pcm_get_error(pcm_play));
+ return errno;
}
}
- if (c_device < 255 ) {
+ if (c_device < TINYHOSTLESS_DEVICE_UNDEFINED ) {
+ if (!check_params(card, c_device, PCM_IN, &config))
+ return EINVAL;
pcm_cap = pcm_open(card, c_device, PCM_IN, &config);
if (!pcm_cap || !pcm_is_ready(pcm_cap)) {
- fprintf(stderr, "Unable to open PCM device %u (%s)\n",
+ fprintf(stderr, "Unable to open PCM capture device %u (%s)\n",
c_device, pcm_get_error(pcm_cap));
if (pcm_play != NULL ) pcm_close(pcm_play);
- return;
+ return errno;
}
}
- printf("Hostless Playing device %u, Capture Device %u, sample: %u ch, %u hz, %u bit playback/capture duration in sec %u\n", p_device, c_device, channels, rate, bits, play_cap_time);
+ printf("%s: Playing device %u, Capture Device %u\n",
+ do_loopback ? "Loopback" : "Hostless", p_device, c_device);
+ printf("Sample: %u ch, %u hz, %u bit\n", channels, rate, bits);
+ if (play_cap_time)
+ printf("Duration in sec: %u\n", play_cap_time);
+ else
+ printf("Duration in sec: forever\n");
+
+ if (do_loopback) {
+ size = pcm_frames_to_bytes(pcm_cap, pcm_get_buffer_size(pcm_cap));
+ buffer = malloc(size);
+ if (!buffer) {
+ fprintf(stderr, "Unable to allocate %d bytes\n", size);
+ pcm_close(pcm_play);
+ pcm_close(pcm_cap);
+ return ENOMEM;
+ }
+ }
/* catch ctrl-c to shutdown cleanly */
signal(SIGINT, stream_close);
+ signal(SIGHUP, stream_close);
+ signal(SIGTERM, stream_close);
if (pcm_cap != NULL) pcm_start(pcm_cap);
if (pcm_play != NULL) pcm_start(pcm_play);
+ clock_gettime(CLOCK_MONOTONIC, &now);
+ end.tv_sec = now.tv_sec + play_cap_time;
+ end.tv_nsec = now.tv_nsec;
+
do {
- count++;
- usleep(10000);
- if ( (play_cap_time > 0) && ((count/100) > play_cap_time)) break;
+ if (do_loopback) {
+ if (pcm_read(pcm_cap, buffer, size)) {
+ fprintf(stderr, "Unable to read from PCM capture device %u (%s)\n",
+ c_device, pcm_get_error(pcm_cap));
+ rc = errno;
+ break;
+ }
+ if (pcm_write(pcm_play, buffer, size)) {
+ fprintf(stderr, "Unable to write to PCM playback device %u (%s)\n",
+ p_device, pcm_get_error(pcm_play));
+ break;
+ }
+ } else {
+ usleep(100000);
+ }
+ if (play_cap_time) {
+ clock_gettime(CLOCK_MONOTONIC, &now);
+ if (now.tv_sec > end.tv_sec ||
+ (now.tv_sec == end.tv_sec && now.tv_nsec >= end.tv_nsec))
+ break;
+ }
} while(!close_h);
- if (pcm_play != NULL) pcm_close(pcm_play);
- if (pcm_cap != NULL) pcm_close(pcm_cap);
+ if (buffer)
+ free(buffer);
+ if (pcm_play != NULL)
+ pcm_close(pcm_play);
+ if (pcm_cap != NULL)
+ pcm_close(pcm_cap);
+ return rc;
}
-
