mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-08 14:48:25 +01:00
alsaloop: Fixes and added --workaround option
- added workaround for alsa-lib (pthread configuration parsing issue) - the workaround must be activated manually using ('--workaround serialopen') - fixed avail_min initialization (caused high CPU usage or xruns) - fixed shared buffer initialization (both capture and playback buffers must have equal number of samples in this config) Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
parent
e77983d3c5
commit
bee994f509
5 changed files with 112 additions and 38 deletions
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@ -1,5 +1,6 @@
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INCLUDES = -I$(top_srcdir)/include
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LDADD = -lm
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CFLAGS += -D_GNU_SOURCE
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if HAVE_SAMPLERATE
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LDADD += -lsamplerate
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endif
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@ -43,6 +43,7 @@ struct loopback_thread {
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};
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int verbose = 0;
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int workarounds = 0;
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int daemonize = 0;
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int use_syslog = 0;
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struct loopback **loopbacks = NULL;
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@ -171,6 +172,7 @@ void help(void)
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" ALSA_ID@OSS_ID (for example: \"Master@VOLUME\")\n"
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"-e,--effect apply an effect (bandpass filter sweep)\n"
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"-v,--verbose verbose mode (more -v means more verbose)\n"
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"-w,--workaround use workaround (serialopen)\n"
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);
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printf("\nRecognized sample formats are:");
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for (k = 0; k < SND_PCM_FORMAT_LAST; ++k) {
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@ -339,6 +341,7 @@ static int parse_config(int argc, char *argv[], snd_output_t *output)
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{"thread", 1, NULL, 'T'},
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{"mixer", 1, NULL, 'm'},
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{"ossmixer", 1, NULL, 'O'},
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{"workaround", 1, NULL, 'w'},
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{NULL, 0, NULL, 0},
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};
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int err, morehelp;
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@ -370,7 +373,7 @@ static int parse_config(int argc, char *argv[], snd_output_t *output)
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while (1) {
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int c;
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if ((c = getopt_long(argc, argv,
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"hdg:P:C:l:t:F:f:c:r:s:benvA:S:a:m:T:O:",
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"hdg:P:C:l:t:F:f:c:r:s:benvA:S:a:m:T:O:w:",
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long_option, NULL)) < 0)
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break;
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switch (c) {
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@ -504,6 +507,10 @@ static int parse_config(int argc, char *argv[], snd_output_t *output)
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case 'v':
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verbose++;
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break;
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case 'w':
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if (strcasecmp(optarg, "serialopen") == 0)
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workarounds |= WORKAROUND_SERIALOPEN;
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break;
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}
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}
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@ -40,6 +40,8 @@ enum {
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#define FILE_CWRITE "/tmp/alsaloop.craw"
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#endif
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#define WORKAROUND_SERIALOPEN (1<<0)
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typedef enum _sync_type {
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SYNC_TYPE_NONE = 0,
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SYNC_TYPE_SIMPLE, /* add or remove samples */
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@ -171,6 +173,7 @@ struct loopback {
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};
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extern int verbose;
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extern int workarounds;
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extern int use_syslog;
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#define logit(priority, fmt, args...) do { \
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@ -31,9 +31,11 @@
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#include <sys/time.h>
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#include <math.h>
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#include <syslog.h>
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#include <pthread.h>
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#include "alsaloop.h"
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static int set_rate_shift(struct loopback_handle *lhandle, double pitch);
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static int get_rate(struct loopback_handle *lhandle);
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#define SYNCTYPE(v) [SYNC_TYPE_##v] = #v
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@ -56,6 +58,21 @@ static const char *src_types[] = {
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SRCTYPE(LINEAR)
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};
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static pthread_mutex_t pcm_open_mutex =
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PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
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static inline void pcm_open_lock(void)
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{
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if (workarounds & WORKAROUND_SERIALOPEN)
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pthread_mutex_lock(&pcm_open_mutex);
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}
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static inline void pcm_open_unlock(void)
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{
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if (workarounds & WORKAROUND_SERIALOPEN)
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pthread_mutex_unlock(&pcm_open_mutex);
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}
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static inline snd_pcm_uframes_t get_whole_latency(struct loopback *loop)
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{
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return loop->latency;
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@ -76,7 +93,7 @@ static int setparams_stream(struct loopback_handle *lhandle,
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err = snd_pcm_hw_params_any(handle, params);
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if (err < 0) {
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logit(LOG_CRIT, "Broken configuration for %s PCM: no configurations available: %s\n", snd_strerror(err), lhandle->id);
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logit(LOG_CRIT, "Broken configuration for %s PCM: no configurations available: %s\n", lhandle->id, snd_strerror(err));
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return err;
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}
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err = snd_pcm_hw_params_set_rate_resample(handle, params, lhandle->resample);
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@ -153,6 +170,8 @@ static int setparams_bufsize(struct loopback_handle *lhandle,
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goto __again;
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}
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snd_pcm_hw_params_get_buffer_size(params, &periodsize);
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if (verbose > 6)
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snd_output_printf(lhandle->loopback->output, "%s: buffer_size=%li\n", lhandle->id, periodsize);
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if (lhandle->period_size_req > 0)
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periodsize = lhandle->period_size_req;
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else
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@ -163,6 +182,8 @@ static int setparams_bufsize(struct loopback_handle *lhandle,
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goto __again;
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}
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snd_pcm_hw_params_get_period_size(params, &periodsize, NULL);
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if (verbose > 6)
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snd_output_printf(lhandle->loopback->output, "%s: period_size=%li\n", lhandle->id, periodsize);
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if (periodsize != bufsize)
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bufsize = periodsize;
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snd_pcm_hw_params_get_buffer_size(params, &buffersize);
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@ -175,11 +196,12 @@ static int setparams_bufsize(struct loopback_handle *lhandle,
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static int setparams_set(struct loopback_handle *lhandle,
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snd_pcm_hw_params_t *params,
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snd_pcm_sw_params_t *swparams)
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snd_pcm_sw_params_t *swparams,
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snd_pcm_uframes_t bufsize)
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{
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snd_pcm_t *handle = lhandle->handle;
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int err;
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snd_pcm_uframes_t val, val1;
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snd_pcm_uframes_t val, period_size, buffer_size;
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err = snd_pcm_hw_params(handle, params);
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if (err < 0) {
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@ -196,21 +218,29 @@ static int setparams_set(struct loopback_handle *lhandle,
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logit(LOG_CRIT, "Unable to set start threshold mode for %s: %s\n", lhandle->id, snd_strerror(err));
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return err;
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}
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snd_pcm_hw_params_get_period_size(params, &val, NULL);
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snd_pcm_hw_params_get_buffer_size(params, &val1);
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snd_pcm_hw_params_get_period_size(params, &period_size, NULL);
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snd_pcm_hw_params_get_buffer_size(params, &buffer_size);
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if (lhandle->nblock) {
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if (lhandle == lhandle->loopback->play) {
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val = val1 - (2 * val - 4);
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val = buffer_size - (2 * period_size - 4);
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} else {
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val = 4;
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}
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if (verbose > 6)
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snd_output_printf(lhandle->loopback->output, "%s: avail_min1=%li\n", lhandle->id, val);
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} else {
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if (lhandle == lhandle->loopback->play) {
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snd_pcm_hw_params_get_buffer_size(params, &val1);
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val = val1 - val - val / 2;
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val = bufsize / 2 + bufsize / 4 + bufsize / 8;
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if (val > buffer_size / 4)
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val = buffer_size / 4;
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val = buffer_size - val;
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} else {
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val /= 2;
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val = bufsize / 2;
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if (val > buffer_size / 4)
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val = buffer_size / 4;
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}
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if (verbose > 6)
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snd_output_printf(lhandle->loopback->output, "%s: avail_min2=%li\n", lhandle->id, val);
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}
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err = snd_pcm_sw_params_set_avail_min(handle, swparams, val);
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if (err < 0) {
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@ -256,11 +286,11 @@ static int setparams(struct loopback *loop, snd_pcm_uframes_t bufsize)
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return err;
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}
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if ((err = setparams_set(loop->play, p_params, p_swparams)) < 0) {
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if ((err = setparams_set(loop->play, p_params, p_swparams, bufsize / loop->play->pitch)) < 0) {
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logit(LOG_CRIT, "Unable to set sw parameters for %s stream: %s\n", loop->play->id, snd_strerror(err));
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return err;
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}
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if ((err = setparams_set(loop->capt, c_params, c_swparams)) < 0) {
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if ((err = setparams_set(loop->capt, c_params, c_swparams, bufsize / loop->capt->pitch)) < 0) {
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logit(LOG_CRIT, "Unable to set sw parameters for %s stream: %s\n", loop->capt->id, snd_strerror(err));
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return err;
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}
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@ -495,6 +525,12 @@ static int readit(struct loopback_handle *lhandle)
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int err;
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avail = snd_pcm_avail_update(lhandle->handle);
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if (avail == -EPIPE) {
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return xrun(lhandle);
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} else if (avail == -ESTRPIPE) {
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if ((err = suspend(lhandle)) < 0)
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return err;
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}
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if (avail > buf_avail(lhandle)) {
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lhandle->buf_over += avail - buf_avail(lhandle);
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avail = buf_avail(lhandle);
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@ -1008,7 +1044,10 @@ static int openit(struct loopback_handle *lhandle)
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SND_PCM_STREAM_PLAYBACK :
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SND_PCM_STREAM_CAPTURE;
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int err, card, device, subdevice;
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if ((err = snd_pcm_open(&lhandle->handle, lhandle->device, stream, SND_PCM_NONBLOCK)) < 0) {
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pcm_open_lock();
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err = snd_pcm_open(&lhandle->handle, lhandle->device, stream, SND_PCM_NONBLOCK);
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pcm_open_unlock();
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if (err < 0) {
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logit(LOG_CRIT, "%s open error: %s\n", lhandle->id, snd_strerror(err));
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return err;
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}
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@ -1027,7 +1066,9 @@ static int openit(struct loopback_handle *lhandle)
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if (card >= 0) {
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char name[16];
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sprintf(name, "hw:%i", card);
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pcm_open_lock();
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err = snd_ctl_open(&lhandle->ctl, name, SND_CTL_NONBLOCK);
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pcm_open_unlock();
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if (err < 0) {
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logit(LOG_CRIT, "%s [%s] ctl open error: %s\n", lhandle->id, name, snd_strerror(err));
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lhandle->ctl = NULL;
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@ -1254,6 +1295,17 @@ int pcmjob_start(struct loopback *loop)
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goto __error;
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}
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loop->play->buf = nbuf;
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loop->play->buf_size = loop->capt->buf_size;
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} else if (loop->capt->buf_size < loop->play->buf_size) {
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char *nbuf = realloc(loop->capt->buf,
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loop->play->buf_size *
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loop->play->frame_size);
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if (nbuf == NULL) {
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err = -ENOMEM;
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goto __error;
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}
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loop->capt->buf = nbuf;
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loop->capt->buf_size = loop->play->buf_size;
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}
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loop->capt->buf = loop->play->buf;
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} else {
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@ -1278,7 +1330,7 @@ int pcmjob_start(struct loopback *loop)
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if (loop->use_samplerate) {
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if (loop->capt->format != SND_PCM_FORMAT_S16 ||
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loop->play->format != SND_PCM_FORMAT_S16) {
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logit(LOG_CRIT, "samplerate conversion supports only S16_LE format (%i, %i)\n", loop->play->format, loop->capt->format);
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logit(LOG_CRIT, "samplerate conversion supports only %s format (play=%s, capt=%s)\n", snd_pcm_format_name(SND_PCM_FORMAT_S16), snd_pcm_format_name(loop->play->format), snd_pcm_format_name(loop->capt->format));
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loop->use_samplerate = 0;
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err = -EIO;
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goto __error;
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@ -1325,6 +1377,8 @@ int pcmjob_start(struct loopback *loop)
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logit(LOG_CRIT, "%s: silence error\n", loop->id);
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goto __error;
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}
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if (verbose > 4)
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snd_output_printf(loop->output, "%s: capt->buffer_size = %li, play->buffer_size = %li\n", loop->id, loop->capt->buf_size, loop->play->buf_size);
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loop->pitch = 1.0;
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update_pitch(loop);
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loop->pitch_delta = 1.0 / ((double)loop->capt->rate * 4);
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@ -1334,8 +1388,13 @@ int pcmjob_start(struct loopback *loop)
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loop->play->buf_count = count;
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if (loop->play->buf == loop->capt->buf)
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loop->capt->buf_pos = count;
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if (writeit(loop->play) != count) {
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logit(LOG_CRIT, "%s: initial playback fill error\n", loop->id);
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err = writeit(loop->play);
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if (verbose > 4)
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snd_output_printf(loop->output, "%s: silence queued %i samples\n", loop->id, err);
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if (count > loop->play->buffer_size)
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count = loop->play->buffer_size;
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if (err != count) {
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logit(LOG_CRIT, "%s: initial playback fill error (%i/%i/%i)\n", loop->id, err, (int)count, loop->play->buffer_size);
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err = -EIO;
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goto __error;
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}
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@ -1511,13 +1570,13 @@ int pcmjob_pollfds_handle(struct loopback *loop, struct pollfd *fds)
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if (verbose > 12) {
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snd_pcm_sframes_t pdelay, cdelay;
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if ((err = snd_pcm_delay(play->handle, &pdelay)) < 0)
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snd_output_printf(loop->output, "%s: delay error: %s\n", play->id, snd_strerror(err));
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snd_output_printf(loop->output, "%s: delay error: %s / %li / %li\n", play->id, snd_strerror(err), play->buf_size, play->buf_count);
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else
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snd_output_printf(loop->output, "%s: delay %li\n", play->id, pdelay);
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snd_output_printf(loop->output, "%s: delay %li / %li / %li\n", play->id, pdelay, play->buf_size, play->buf_count);
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if ((err = snd_pcm_delay(capt->handle, &cdelay)) < 0)
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snd_output_printf(loop->output, "%s: delay error: %s\n", capt->id, snd_strerror(err));
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snd_output_printf(loop->output, "%s: delay error: %s / %li / %li\n", capt->id, snd_strerror(err), capt->buf_size, capt->buf_count);
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else
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snd_output_printf(loop->output, "%s: delay %li\n", capt->id, cdelay);
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snd_output_printf(loop->output, "%s: delay %li / %li / %li\n", capt->id, cdelay, capt->buf_size, capt->buf_count);
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}
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idx = 0;
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if (loop->running) {
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@ -1570,7 +1629,7 @@ int pcmjob_pollfds_handle(struct loopback *loop, struct pollfd *fds)
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}
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if (verbose > 9)
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snd_output_printf(loop->output, "%s: prevents = 0x%x, crevents = 0x%x\n", loop->id, prevents, crevents);
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if (prevents == 0 && crevents == 0)
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if (!loop->running)
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goto __pcm_end;
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do {
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ccount = readit(capt);
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@ -1637,22 +1696,22 @@ int pcmjob_pollfds_handle(struct loopback *loop, struct pollfd *fds)
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if (verbose > 4)
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snd_output_printf(loop->output, "%s: queued %li/%li samples\n", loop->id, pqueued, cqueued);
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if (pqueued > 0)
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loop->play->total_queued += pqueued;
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play->total_queued += pqueued;
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if (cqueued > 0)
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loop->capt->total_queued += cqueued;
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capt->total_queued += cqueued;
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if (pqueued > 0 || cqueued > 0)
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loop->total_queued_count += 1;
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}
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if (verbose > 12) {
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snd_pcm_sframes_t pdelay, cdelay;
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if ((err = snd_pcm_delay(play->handle, &pdelay)) < 0)
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snd_output_printf(loop->output, "%s: end delay error: %s\n", play->id, snd_strerror(err));
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snd_output_printf(loop->output, "%s: end delay error: %s / %li / %li\n", play->id, snd_strerror(err), play->buf_size, play->buf_count);
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else
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snd_output_printf(loop->output, "%s: end delay %li\n", play->id, pdelay);
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snd_output_printf(loop->output, "%s: end delay %li / %li / %li\n", play->id, pdelay, play->buf_size, play->buf_count);
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if ((err = snd_pcm_delay(capt->handle, &cdelay)) < 0)
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snd_output_printf(loop->output, "%s: end delay error: %s\n", capt->id, snd_strerror(err));
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snd_output_printf(loop->output, "%s: end delay error: %s / %li / %li\n", capt->id, snd_strerror(err), capt->buf_size, capt->buf_count);
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else
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snd_output_printf(loop->output, "%s: end delay %li\n", capt->id, cdelay);
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snd_output_printf(loop->output, "%s: end delay %li / %li / %li\n", capt->id, cdelay, capt->buf_size, capt->buf_count);
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}
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__pcm_end:
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if (verbose > 13) {
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|
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@ -3,6 +3,7 @@
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#DBG="gdb --args "
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#DBG="strace"
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#DBG="valgrind --leak-check=full"
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ARGS=
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CFGFILE="/tmp/alsaloop.test.cfg"
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test1() {
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@ -13,7 +14,8 @@ test1() {
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--mixer "name='Master Playback Switch'@name='Master Playback Switch'" \
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--mixer "name='PCM Playback Volume'" \
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--ossmixer "Master@VOLUME" \
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--ossmixer "PCM@PCM"
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--ossmixer "PCM@PCM" \
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$ARGS
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}
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test2() {
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@ -27,7 +29,7 @@ cat > $CFGFILE <<EOF
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# next line - second job
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-C hw:1,0,1 -P hw:0,1,0 --tlatency 50000 --thread 2
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EOF
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$DBG ./alsaloop -d --config $CFGFILE
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$DBG ./alsaloop -d --config $CFGFILE $ARGS
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}
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||||
|
||||
test3() {
|
||||
|
@ -46,7 +48,8 @@ cat > $CFGFILE <<EOF
|
|||
-C hw:1,0,6 -P plug:dmix:0 --tlatency 50000 --thread 6
|
||||
-C hw:1,0,7 -P plug:dmix:0 --tlatency 50000 --thread 7
|
||||
EOF
|
||||
$DBG ./alsaloop --config $CFGFILE
|
||||
LD_PRELOAD="/home/perex/alsa/alsa-lib/src/.libs/libasound.so" \
|
||||
$DBG ./alsaloop --config $CFGFILE $ARGS
|
||||
}
|
||||
|
||||
test4() {
|
||||
|
@ -55,7 +58,8 @@ test4() {
|
|||
--tlatency 50000 \
|
||||
--mixer "name='Master Playback Volume'@name='Master Playback Volume'" \
|
||||
--mixer "name='Master Playback Switch'@name='Master Playback Switch'" \
|
||||
--mixer "name='PCM Playback Volume'"
|
||||
--mixer "name='PCM Playback Volume'" \
|
||||
$ARGS
|
||||
}
|
||||
|
||||
test5() {
|
||||
|
@ -68,14 +72,14 @@ cat > $CFGFILE <<EOF
|
|||
--ossmixer "name=Master@VOLUME"
|
||||
-C hw:1,0,1 -P plughw:0,1 --tlatency 50000 --thread 2
|
||||
EOF
|
||||
$DBG ./alsaloop --config $CFGFILE
|
||||
$DBG ./alsaloop --config $CFGFILE $ARGS
|
||||
}
|
||||
|
||||
case "$1" in
|
||||
test1) test1 ;;
|
||||
test2) test2 ;;
|
||||
test3) test3 ;;
|
||||
test4) test4 ;;
|
||||
test5) test5 ;;
|
||||
*) test1 ;;
|
||||
test1) shift; ARGS="$@"; test1 ;;
|
||||
test2) shift; ARGS="$@"; test2 ;;
|
||||
test3) shift; ARGS="$@"; test3 ;;
|
||||
test4) shift; ARGS="$@"; test4 ;;
|
||||
test5) shift; ARGS="$@"; test5 ;;
|
||||
*) ARGS="$@"; test1 ;;
|
||||
esac
|
||||
|
|
Loading…
Reference in a new issue