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pkgsrc/www/firefox/patches/patch-media_libcubeb_src_cubeb__alsa.c

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20 KiB
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$NetBSD: patch-media_libcubeb_src_cubeb__alsa.c,v 1.10 2015/05/14 15:30:54 bad Exp $
--- media/libcubeb/src/cubeb_alsa.c.orig 2015-05-08 16:55:17.000000000 +0000
+++ media/libcubeb/src/cubeb_alsa.c 2015-05-14 15:22:34.000000000 +0000
@@ -7,12 +7,18 @@
#undef NDEBUG
#define _DEFAULT_SOURCE
#define _BSD_SOURCE
+#if defined(__NetBSD__)
+#define _NETBSD_SOURCE
+#endif
#define _XOPEN_SOURCE 500
#include <pthread.h>
#include <sys/time.h>
#include <assert.h>
#include <limits.h>
+#include <dlfcn.h>
#include <poll.h>
+#include <stdlib.h>
+#include <stdio.h>
#include <unistd.h>
#include <alsa/asoundlib.h>
#include "cubeb/cubeb.h"
@@ -25,6 +31,51 @@
#define ALSA_PA_PLUGIN "ALSA <-> PulseAudio PCM I/O Plugin"
+#ifdef DISABLE_LIBASOUND_DLOPEN
+#define WRAP(x) x
+#else
+#define WRAP(x) cubeb_##x
+#define MAKE_TYPEDEF(x) static typeof(x) * cubeb_##x
+MAKE_TYPEDEF(snd_config);
+MAKE_TYPEDEF(snd_config_add);
+MAKE_TYPEDEF(snd_config_copy);
+MAKE_TYPEDEF(snd_config_delete);
+MAKE_TYPEDEF(snd_config_get_id);
+MAKE_TYPEDEF(snd_config_get_string);
+MAKE_TYPEDEF(snd_config_imake_integer);
+MAKE_TYPEDEF(snd_config_search);
+MAKE_TYPEDEF(snd_config_search_definition);
+MAKE_TYPEDEF(snd_lib_error_set_handler);
+MAKE_TYPEDEF(snd_pcm_avail_update);
+MAKE_TYPEDEF(snd_pcm_close);
+MAKE_TYPEDEF(snd_pcm_delay);
+MAKE_TYPEDEF(snd_pcm_drain);
+MAKE_TYPEDEF(snd_pcm_forward);
+MAKE_TYPEDEF(snd_pcm_frames_to_bytes);
+MAKE_TYPEDEF(snd_pcm_get_params);
+/* snd_pcm_hw_params_alloca is actually a macro */
+/* MAKE_TYPEDEF(snd_pcm_hw_params_alloca); */
+MAKE_TYPEDEF(snd_pcm_hw_params_sizeof);
+#define snd_pcm_hw_params_sizeof cubeb_snd_pcm_hw_params_sizeof
+MAKE_TYPEDEF(snd_pcm_hw_params_any);
+MAKE_TYPEDEF(snd_pcm_hw_params_get_channels_max);
+MAKE_TYPEDEF(snd_pcm_hw_params_get_rate);
+MAKE_TYPEDEF(snd_pcm_hw_params_set_rate_near);
+MAKE_TYPEDEF(snd_pcm_nonblock);
+MAKE_TYPEDEF(snd_pcm_open);
+MAKE_TYPEDEF(snd_pcm_open_lconf);
+MAKE_TYPEDEF(snd_pcm_pause);
+MAKE_TYPEDEF(snd_pcm_poll_descriptors);
+MAKE_TYPEDEF(snd_pcm_poll_descriptors_count);
+MAKE_TYPEDEF(snd_pcm_poll_descriptors_revents);
+MAKE_TYPEDEF(snd_pcm_recover);
+MAKE_TYPEDEF(snd_pcm_set_params);
+MAKE_TYPEDEF(snd_pcm_state);
+MAKE_TYPEDEF(snd_pcm_writei);
+
+#undef MAKE_TYPEDEF
+#endif
+
/* ALSA is not thread-safe. snd_pcm_t instances are individually protected
by the owning cubeb_stream's mutex. snd_pcm_t creation and destruction
is not thread-safe until ALSA 1.0.24 (see alsa-lib.git commit 91c9c8f1),
@@ -65,6 +116,8 @@
workaround is not required. */
snd_config_t * local_config;
int is_pa;
+
+ void * libasound;
};
enum stream_state {
@@ -258,32 +311,35 @@
long got;
void * p;
int draining;
+ unsigned pipefailures, againfailures;
draining = 0;
pthread_mutex_lock(&stm->mutex);
- r = snd_pcm_poll_descriptors_revents(stm->pcm, stm->fds, stm->nfds, &revents);
- if (r < 0 || revents != POLLOUT) {
- /* This should be a stream error; it makes no sense for poll(2) to wake
- for this stream and then have the stream report that it's not ready.
- Unfortunately, this does happen, so just bail out and try again. */
- pthread_mutex_unlock(&stm->mutex);
- return RUNNING;
- }
-
- avail = snd_pcm_avail_update(stm->pcm);
- if (avail == -EPIPE) {
- snd_pcm_recover(stm->pcm, avail, 1);
- avail = snd_pcm_avail_update(stm->pcm);
- }
+ for (pipefailures = 0;;) {
+ r = WRAP(snd_pcm_poll_descriptors_revents)(stm->pcm, stm->fds, stm->nfds, &revents);
+ if (r < 0 || revents != POLLOUT ||
+ (avail = WRAP(snd_pcm_avail_update)(stm->pcm)) == 0) {
+ /* This should be a stream error; it makes no sense for poll(2) to wake
+ for this stream and then have the stream report that it's not ready.
+ Unfortunately, this does happen, so just bail out and try again. */
+ pthread_mutex_unlock(&stm->mutex);
+ return RUNNING;
+ }
- /* Failed to recover from an xrun, this stream must be broken. */
- if (avail < 0) {
- pthread_mutex_unlock(&stm->mutex);
- stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
- return ERROR;
+ if (avail > 0)
+ break;
+ if (pipefailures++ > 11) {
+ fprintf(stderr, "%s: repeated failures from snd_pcm_avail_update, "
+ "giving up\n", __func__);
+ pthread_mutex_unlock(&stm->mutex);
+ stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
+ return ERROR;
+ }
+ WRAP(snd_pcm_recover)(stm->pcm, avail, 1);
}
+ pipefailures = againfailures = 0;
/* This should never happen. */
if ((unsigned int) avail > stm->buffer_size) {
@@ -294,8 +350,8 @@
available to write. If avail is still zero here, the stream must be in
a funky state, so recover and try again. */
if (avail == 0) {
- snd_pcm_recover(stm->pcm, -EPIPE, 1);
- avail = snd_pcm_avail_update(stm->pcm);
+ WRAP(snd_pcm_recover)(stm->pcm, -EPIPE, 1);
+ avail = WRAP(snd_pcm_avail_update)(stm->pcm);
if (avail <= 0) {
pthread_mutex_unlock(&stm->mutex);
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
@@ -303,7 +359,7 @@
}
}
- p = calloc(1, snd_pcm_frames_to_bytes(stm->pcm, avail));
+ p = calloc(1, WRAP(snd_pcm_frames_to_bytes)(stm->pcm, avail));
assert(p);
pthread_mutex_unlock(&stm->mutex);
@@ -312,10 +368,11 @@
if (got < 0) {
pthread_mutex_unlock(&stm->mutex);
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
+ free(p);
return ERROR;
}
if (got > 0) {
- snd_pcm_sframes_t wrote;
+ snd_pcm_sframes_t wrote, towrite = got;
if (stm->params.format == CUBEB_SAMPLE_FLOAT32NE) {
float * b = (float *) p;
@@ -328,14 +385,64 @@
b[i] *= stm->volume;
}
}
- wrote = snd_pcm_writei(stm->pcm, p, got);
- if (wrote == -EPIPE) {
- snd_pcm_recover(stm->pcm, wrote, 1);
- wrote = snd_pcm_writei(stm->pcm, p, got);
- }
- assert(wrote >= 0 && wrote == got);
- stm->write_position += wrote;
- gettimeofday(&stm->last_activity, NULL);
+ for (;;) {
+ wrote = WRAP(snd_pcm_writei)(stm->pcm, p,
+ towrite > avail ? avail : towrite);
+ switch(wrote) {
+ case -EPIPE:
+ if (pipefailures++ > 3) {
+ fprintf(stderr, "%s: Too many underflows, giving up\n", __func__);
+ stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
+ pthread_mutex_unlock(&stm->mutex);
+ free(p);
+ return ERROR;
+ }
+ WRAP(snd_pcm_recover)(stm->pcm, wrote, 1);
+ continue;
+ case -EAGAIN:
+ if (againfailures++ > 3) {
+ fprintf(stderr, "%s: Too many -EAGAIN errors from snd_pcm_writei, "
+ "giving up\n", __func__);
+ stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
+ pthread_mutex_unlock(&stm->mutex);
+ free(p);
+ return ERROR;
+ }
+ continue;
+#if defined(EBADFD)
+ case -EBADFD:
+ fprintf(stderr, "%s: snc_pcm_writei returned -%s, giving up\n",
+ __func__, "EBADFD");
+ free(p);
+ stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
+ pthread_mutex_unlock(&stm->mutex);
+ return ERROR;
+#endif
+ }
+ if (wrote < 0) {
+ fprintf(stderr, "%s: snc_pcm_writei returned unexpected error %lld, "
+ "giving up\n", __func__, (long long)wrote);
+ free(p);
+ stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
+ pthread_mutex_unlock(&stm->mutex);
+ return ERROR;
+ }
+ pipefailures = againfailures = 0;
+ stm->write_position += wrote;
+ gettimeofday(&stm->last_activity, NULL);
+ if (wrote > towrite) {
+ fprintf(stderr, "%s: snc_pcm_writei wrote %lld frames, which was more "
+ "than we requested (%lld). This should not happen, giving up\n",
+ __func__, (long long)wrote, (long long)towrite);
+ free(p);
+ stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
+ pthread_mutex_unlock(&stm->mutex);
+ return ERROR;
+ }
+ if (towrite == wrote)
+ break;
+ towrite -= wrote;
+ }
}
if (got != avail) {
long buffer_fill = stm->buffer_size - (avail - got);
@@ -343,7 +450,7 @@
/* Fill the remaining buffer with silence to guarantee one full period
has been written. */
- snd_pcm_writei(stm->pcm, (char *) p + got, avail - got);
+ WRAP(snd_pcm_writei)(stm->pcm, (char *) p + got, avail - got);
set_timeout(&stm->drain_timeout, buffer_time * 1000);
@@ -454,26 +561,26 @@
slave_def = NULL;
- r = snd_config_search(root_pcm, "slave", &slave_pcm);
+ r = WRAP(snd_config_search)(root_pcm, "slave", &slave_pcm);
if (r < 0) {
return NULL;
}
- r = snd_config_get_string(slave_pcm, &string);
+ r = WRAP(snd_config_get_string)(slave_pcm, &string);
if (r >= 0) {
- r = snd_config_search_definition(lconf, "pcm_slave", string, &slave_def);
+ r = WRAP(snd_config_search_definition)(lconf, "pcm_slave", string, &slave_def);
if (r < 0) {
return NULL;
}
}
do {
- r = snd_config_search(slave_def ? slave_def : slave_pcm, "pcm", &pcm);
+ r = WRAP(snd_config_search)(slave_def ? slave_def : slave_pcm, "pcm", &pcm);
if (r < 0) {
break;
}
- r = snd_config_get_string(slave_def ? slave_def : slave_pcm, &string);
+ r = WRAP(snd_config_get_string)(slave_def ? slave_def : slave_pcm, &string);
if (r < 0) {
break;
}
@@ -482,7 +589,7 @@
if (r < 0 || r > (int) sizeof(node_name)) {
break;
}
- r = snd_config_search(lconf, node_name, &pcm);
+ r = WRAP(snd_config_search)(lconf, node_name, &pcm);
if (r < 0) {
break;
}
@@ -491,7 +598,7 @@
} while (0);
if (slave_def) {
- snd_config_delete(slave_def);
+ WRAP(snd_config_delete)(slave_def);
}
return NULL;
@@ -514,22 +621,22 @@
lconf = NULL;
- if (snd_config == NULL) {
+ if (*WRAP(snd_config) == NULL) {
return NULL;
}
- r = snd_config_copy(&lconf, snd_config);
+ r = WRAP(snd_config_copy)(&lconf, *WRAP(snd_config));
if (r < 0) {
return NULL;
}
do {
- r = snd_config_search_definition(lconf, "pcm", pcm_name, &pcm_node);
+ r = WRAP(snd_config_search_definition)(lconf, "pcm", pcm_name, &pcm_node);
if (r < 0) {
break;
}
- r = snd_config_get_id(pcm_node, &string);
+ r = WRAP(snd_config_get_id)(pcm_node, &string);
if (r < 0) {
break;
}
@@ -538,7 +645,7 @@
if (r < 0 || r > (int) sizeof(node_name)) {
break;
}
- r = snd_config_search(lconf, node_name, &pcm_node);
+ r = WRAP(snd_config_search)(lconf, node_name, &pcm_node);
if (r < 0) {
break;
}
@@ -549,12 +656,12 @@
}
/* Fetch the PCM node's type, and bail out if it's not the PulseAudio plugin. */
- r = snd_config_search(pcm_node, "type", &node);
+ r = WRAP(snd_config_search)(pcm_node, "type", &node);
if (r < 0) {
break;
}
- r = snd_config_get_string(node, &string);
+ r = WRAP(snd_config_get_string)(node, &string);
if (r < 0) {
break;
}
@@ -565,18 +672,18 @@
/* Don't clobber an explicit existing handle_underrun value, set it only
if it doesn't already exist. */
- r = snd_config_search(pcm_node, "handle_underrun", &node);
+ r = WRAP(snd_config_search)(pcm_node, "handle_underrun", &node);
if (r != -ENOENT) {
break;
}
/* Disable pcm_pulse's asynchronous underrun handling. */
- r = snd_config_imake_integer(&node, "handle_underrun", 0);
+ r = WRAP(snd_config_imake_integer)(&node, "handle_underrun", 0);
if (r < 0) {
break;
}
- r = snd_config_add(pcm_node, node);
+ r = WRAP(snd_config_add)(pcm_node, node);
if (r < 0) {
break;
}
@@ -584,7 +691,7 @@
return lconf;
} while (0);
- snd_config_delete(lconf);
+ WRAP(snd_config_delete)(lconf);
return NULL;
}
@@ -596,9 +703,9 @@
pthread_mutex_lock(&cubeb_alsa_mutex);
if (local_config) {
- r = snd_pcm_open_lconf(pcm, CUBEB_ALSA_PCM_NAME, stream, SND_PCM_NONBLOCK, local_config);
+ r = WRAP(snd_pcm_open_lconf)(pcm, CUBEB_ALSA_PCM_NAME, stream, SND_PCM_NONBLOCK, local_config);
} else {
- r = snd_pcm_open(pcm, CUBEB_ALSA_PCM_NAME, stream, SND_PCM_NONBLOCK);
+ r = WRAP(snd_pcm_open)(pcm, CUBEB_ALSA_PCM_NAME, stream, SND_PCM_NONBLOCK);
}
pthread_mutex_unlock(&cubeb_alsa_mutex);
@@ -611,7 +718,7 @@
int r;
pthread_mutex_lock(&cubeb_alsa_mutex);
- r = snd_pcm_close(pcm);
+ r = WRAP(snd_pcm_close)(pcm);
pthread_mutex_unlock(&cubeb_alsa_mutex);
return r;
@@ -668,12 +775,65 @@
pthread_attr_t attr;
snd_pcm_t * dummy;
+ void * libasound = NULL;
+
+#ifndef DISABLE_LIBASOUND_DLOPEN
+ libasound = dlopen("libasound.so", RTLD_LAZY);
+ if (!libasound) {
+ return CUBEB_ERROR;
+ }
+
+#define LOAD(x) do { \
+ cubeb_##x = dlsym(libasound, #x); \
+ if (!cubeb_##x) { \
+ dlclose(libasound); \
+ return CUBEB_ERROR; \
+ } \
+ } while(0)
+
+ LOAD(snd_config);
+ LOAD(snd_config_add);
+ LOAD(snd_config_copy);
+ LOAD(snd_config_delete);
+ LOAD(snd_config_get_id);
+ LOAD(snd_config_get_string);
+ LOAD(snd_config_imake_integer);
+ LOAD(snd_config_search);
+ LOAD(snd_config_search_definition);
+ LOAD(snd_lib_error_set_handler);
+ LOAD(snd_pcm_avail_update);
+ LOAD(snd_pcm_close);
+ LOAD(snd_pcm_delay);
+ LOAD(snd_pcm_drain);
+ LOAD(snd_pcm_frames_to_bytes);
+ LOAD(snd_pcm_get_params);
+ /* snd_pcm_hw_params_alloca is actually a macro */
+ /* LOAD(snd_pcm_hw_params_alloca); */
+ LOAD(snd_pcm_hw_params_sizeof);
+ LOAD(snd_pcm_hw_params_any);
+ LOAD(snd_pcm_hw_params_get_channels_max);
+ LOAD(snd_pcm_hw_params_get_rate);
+ LOAD(snd_pcm_hw_params_set_rate_near);
+ LOAD(snd_pcm_nonblock);
+ LOAD(snd_pcm_open);
+ LOAD(snd_pcm_open_lconf);
+ LOAD(snd_pcm_pause);
+ LOAD(snd_pcm_poll_descriptors);
+ LOAD(snd_pcm_poll_descriptors_count);
+ LOAD(snd_pcm_poll_descriptors_revents);
+ LOAD(snd_pcm_recover);
+ LOAD(snd_pcm_set_params);
+ LOAD(snd_pcm_state);
+ LOAD(snd_pcm_writei);
+
+#undef LOAD
+#endif
assert(context);
*context = NULL;
pthread_mutex_lock(&cubeb_alsa_mutex);
if (!cubeb_alsa_error_handler_set) {
- snd_lib_error_set_handler(silent_error_handler);
+ WRAP(snd_lib_error_set_handler)(silent_error_handler);
cubeb_alsa_error_handler_set = 1;
}
pthread_mutex_unlock(&cubeb_alsa_mutex);
@@ -681,6 +841,8 @@
ctx = calloc(1, sizeof(*ctx));
assert(ctx);
+ ctx->libasound = libasound;
+
ctx->ops = &alsa_ops;
r = pthread_mutex_init(&ctx->mutex, NULL);
@@ -730,7 +892,7 @@
config fails with EINVAL, the PA PCM is too old for this workaround. */
if (r == -EINVAL) {
pthread_mutex_lock(&cubeb_alsa_mutex);
- snd_config_delete(ctx->local_config);
+ WRAP(snd_config_delete)(ctx->local_config);
pthread_mutex_unlock(&cubeb_alsa_mutex);
ctx->local_config = NULL;
} else if (r >= 0) {
@@ -769,9 +931,13 @@
pthread_mutex_destroy(&ctx->mutex);
free(ctx->fds);
+ if (ctx->libasound) {
+ dlclose(ctx->libasound);
+ }
+
if (ctx->local_config) {
pthread_mutex_lock(&cubeb_alsa_mutex);
- snd_config_delete(ctx->local_config);
+ WRAP(snd_config_delete)(ctx->local_config);
pthread_mutex_unlock(&cubeb_alsa_mutex);
}
@@ -839,7 +1005,7 @@
return CUBEB_ERROR;
}
- r = snd_pcm_nonblock(stm->pcm, 1);
+ r = WRAP(snd_pcm_nonblock)(stm->pcm, 1);
assert(r == 0);
/* Ugly hack: the PA ALSA plugin allows buffer configurations that can't
@@ -849,23 +1015,23 @@
latency = latency < 500 ? 500 : latency;
}
- r = snd_pcm_set_params(stm->pcm, format, SND_PCM_ACCESS_RW_INTERLEAVED,
- stm->params.channels, stm->params.rate, 1,
- latency * 1000);
+ r = WRAP(snd_pcm_set_params)(stm->pcm, format, SND_PCM_ACCESS_RW_INTERLEAVED,
+ stm->params.channels, stm->params.rate, 1,
+ latency * 1000);
if (r < 0) {
alsa_stream_destroy(stm);
return CUBEB_ERROR_INVALID_FORMAT;
}
- r = snd_pcm_get_params(stm->pcm, &stm->buffer_size, &stm->period_size);
+ r = WRAP(snd_pcm_get_params)(stm->pcm, &stm->buffer_size, &stm->period_size);
assert(r == 0);
- stm->nfds = snd_pcm_poll_descriptors_count(stm->pcm);
+ stm->nfds = WRAP(snd_pcm_poll_descriptors_count)(stm->pcm);
assert(stm->nfds > 0);
stm->saved_fds = calloc(stm->nfds, sizeof(struct pollfd));
assert(stm->saved_fds);
- r = snd_pcm_poll_descriptors(stm->pcm, stm->saved_fds, stm->nfds);
+ r = WRAP(snd_pcm_poll_descriptors)(stm->pcm, stm->saved_fds, stm->nfds);
assert((nfds_t) r == stm->nfds);
r = pthread_cond_init(&stm->cond, NULL);
@@ -896,7 +1062,7 @@
pthread_mutex_lock(&stm->mutex);
if (stm->pcm) {
if (stm->state == DRAINING) {
- snd_pcm_drain(stm->pcm);
+ WRAP(snd_pcm_drain)(stm->pcm);
}
alsa_locked_pcm_close(stm->pcm);
stm->pcm = NULL;
@@ -906,7 +1072,10 @@
pthread_mutex_destroy(&stm->mutex);
r = pthread_cond_destroy(&stm->cond);
- assert(r == 0);
+ if (r != 0) { /* XXX stopgap until someone figures out the real reason */
+ fprintf(stderr,"alsa_stream_destroy: pthread_cond_destroy failed: %s",
+ strerror(r));
+ }
alsa_unregister_stream(stm);
@@ -938,12 +1107,12 @@
return CUBEB_ERROR;
}
- r = snd_pcm_hw_params_any(stm->pcm, hw_params);
+ r = WRAP(snd_pcm_hw_params_any)(stm->pcm, hw_params);
if (r < 0) {
return CUBEB_ERROR;
}
- r = snd_pcm_hw_params_get_channels_max(hw_params, max_channels);
+ r = WRAP(snd_pcm_hw_params_get_channels_max)(hw_params, max_channels);
if (r < 0) {
return CUBEB_ERROR;
}
@@ -963,34 +1132,34 @@
/* get a pcm, disabling resampling, so we get a rate the
* hardware/dmix/pulse/etc. supports. */
- r = snd_pcm_open(&pcm, "default", SND_PCM_STREAM_PLAYBACK | SND_PCM_NO_AUTO_RESAMPLE, 0);
+ r = WRAP(snd_pcm_open)(&pcm, "default", SND_PCM_STREAM_PLAYBACK | SND_PCM_NO_AUTO_RESAMPLE, 0);
if (r < 0) {
return CUBEB_ERROR;
}
- r = snd_pcm_hw_params_any(pcm, hw_params);
+ r = WRAP(snd_pcm_hw_params_any)(pcm, hw_params);
if (r < 0) {
- snd_pcm_close(pcm);
+ WRAP(snd_pcm_close)(pcm);
return CUBEB_ERROR;
}
- r = snd_pcm_hw_params_get_rate(hw_params, rate, &dir);
+ r = WRAP(snd_pcm_hw_params_get_rate)(hw_params, rate, &dir);
if (r >= 0) {
/* There is a default rate: use it. */
- snd_pcm_close(pcm);
+ WRAP(snd_pcm_close)(pcm);
return CUBEB_OK;
}
/* Use a common rate, alsa may adjust it based on hw/etc. capabilities. */
*rate = 44100;
- r = snd_pcm_hw_params_set_rate_near(pcm, hw_params, rate, NULL);
+ r = WRAP(snd_pcm_hw_params_set_rate_near)(pcm, hw_params, rate, NULL);
if (r < 0) {
- snd_pcm_close(pcm);
+ WRAP(snd_pcm_close)(pcm);
return CUBEB_ERROR;
}
- snd_pcm_close(pcm);
+ WRAP(snd_pcm_close)(pcm);
return CUBEB_OK;
}
@@ -1014,7 +1183,7 @@
ctx = stm->context;
pthread_mutex_lock(&stm->mutex);
- snd_pcm_pause(stm->pcm, 0);
+ WRAP(snd_pcm_pause)(stm->pcm, 0);
gettimeofday(&stm->last_activity, NULL);
pthread_mutex_unlock(&stm->mutex);
@@ -1048,7 +1217,7 @@
pthread_mutex_unlock(&ctx->mutex);
pthread_mutex_lock(&stm->mutex);
- snd_pcm_pause(stm->pcm, 1);
+ WRAP(snd_pcm_pause)(stm->pcm, 1);
pthread_mutex_unlock(&stm->mutex);
return CUBEB_OK;
@@ -1064,14 +1233,17 @@
pthread_mutex_lock(&stm->mutex);
delay = -1;
- if (snd_pcm_state(stm->pcm) != SND_PCM_STATE_RUNNING ||
- snd_pcm_delay(stm->pcm, &delay) != 0) {
+ if (WRAP(snd_pcm_state)(stm->pcm) != SND_PCM_STATE_RUNNING ||
+ WRAP(snd_pcm_delay)(stm->pcm, &delay) != 0) {
*position = stm->last_position;
pthread_mutex_unlock(&stm->mutex);
return CUBEB_OK;
}
- assert(delay >= 0);
+ if (delay < 0) {
+ WRAP(snd_pcm_forward)(stm->pcm, -delay);
+ delay = 0;
+ }
*position = 0;
if (stm->write_position >= (snd_pcm_uframes_t) delay) {
@@ -1090,7 +1262,7 @@
snd_pcm_sframes_t delay;
/* This function returns the delay in frames until a frame written using
snd_pcm_writei is sent to the DAC. The DAC delay should be < 1ms anyways. */
- if (snd_pcm_delay(stm->pcm, &delay)) {
+ if (WRAP(snd_pcm_delay)(stm->pcm, &delay)) {
return CUBEB_ERROR;
}
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