#include "echo-cancel.h"
#include <pulse/xmalloc.h>
-#include <pulse/i18n.h>
#include <pulse/timeval.h>
#include <pulse/rtclock.h>
+#include <pulsecore/i18n.h>
#include <pulsecore/atomic.h>
#include <pulsecore/macro.h>
-#include <pulsecore/core-error.h>
#include <pulsecore/namereg.h>
#include <pulsecore/sink.h>
#include <pulsecore/module.h>
#include <pulsecore/core-rtclock.h>
#include <pulsecore/core-util.h>
-#include <pulsecore/core-error.h>
#include <pulsecore/modargs.h>
#include <pulsecore/log.h>
-#include <pulsecore/thread.h>
-#include <pulsecore/thread-mq.h>
#include <pulsecore/rtpoll.h>
#include <pulsecore/sample-util.h>
#include <pulsecore/ltdl-helper.h>
#include "module-echo-cancel-symdef.h"
PA_MODULE_AUTHOR("Wim Taymans");
-PA_MODULE_DESCRIPTION("Echo Cancelation");
+PA_MODULE_DESCRIPTION("Echo Cancellation");
PA_MODULE_VERSION(PACKAGE_VERSION);
-PA_MODULE_LOAD_ONCE(FALSE);
+PA_MODULE_LOAD_ONCE(false);
PA_MODULE_USAGE(
_("source_name=<name for the source> "
"source_properties=<properties for the source> "
"sink_properties=<properties for the sink> "
"sink_master=<name of sink to filter> "
"adjust_time=<how often to readjust rates in s> "
+ "adjust_threshold=<how much drift to readjust after in ms> "
"format=<sample format> "
"rate=<sample rate> "
"channels=<number of channels> "
"aec_method=<implementation to use> "
"aec_args=<parameters for the AEC engine> "
"save_aec=<save AEC data in /tmp> "
+ "autoloaded=<set if this module is being loaded automatically> "
+ "use_volume_sharing=<yes or no> "
));
/* NOTE: Make sure the enum and ec_table are maintained in the correct order */
typedef enum {
PA_ECHO_CANCELLER_INVALID = -1,
- PA_ECHO_CANCELLER_SPEEX = 0,
+ PA_ECHO_CANCELLER_NULL,
+#ifdef HAVE_SPEEX
+ PA_ECHO_CANCELLER_SPEEX,
+#endif
+#ifdef HAVE_ADRIAN_EC
PA_ECHO_CANCELLER_ADRIAN,
+#endif
+#ifdef HAVE_WEBRTC
+ PA_ECHO_CANCELLER_WEBRTC,
+#endif
} pa_echo_canceller_method_t;
+#ifdef HAVE_WEBRTC
+#define DEFAULT_ECHO_CANCELLER "webrtc"
+#else
#define DEFAULT_ECHO_CANCELLER "speex"
+#endif
static const pa_echo_canceller ec_table[] = {
+ {
+ /* Null, Dummy echo canceller (just copies data) */
+ .init = pa_null_ec_init,
+ .run = pa_null_ec_run,
+ .done = pa_null_ec_done,
+ },
+#ifdef HAVE_SPEEX
{
/* Speex */
.init = pa_speex_ec_init,
.run = pa_speex_ec_run,
.done = pa_speex_ec_done,
},
+#endif
+#ifdef HAVE_ADRIAN_EC
{
/* Adrian Andre's NLMS implementation */
.init = pa_adrian_ec_init,
.run = pa_adrian_ec_run,
.done = pa_adrian_ec_done,
},
+#endif
+#ifdef HAVE_WEBRTC
+ {
+ /* WebRTC's audio processing engine */
+ .init = pa_webrtc_ec_init,
+ .play = pa_webrtc_ec_play,
+ .record = pa_webrtc_ec_record,
+ .set_drift = pa_webrtc_ec_set_drift,
+ .run = pa_webrtc_ec_run,
+ .done = pa_webrtc_ec_done,
+ },
+#endif
};
+#define DEFAULT_RATE 32000
+#define DEFAULT_CHANNELS 1
#define DEFAULT_ADJUST_TIME_USEC (1*PA_USEC_PER_SEC)
-#define DEFAULT_SAVE_AEC 0
+#define DEFAULT_ADJUST_TOLERANCE (5*PA_USEC_PER_MSEC)
+#define DEFAULT_SAVE_AEC false
+#define DEFAULT_AUTOLOADED false
#define MEMBLOCKQ_MAXLENGTH (16*1024*1024)
+/* Can only be used in main context */
+#define IS_ACTIVE(u) ((pa_source_get_state((u)->source) == PA_SOURCE_RUNNING) && \
+ (pa_sink_get_state((u)->sink) == PA_SINK_RUNNING))
+
/* This module creates a new (virtual) source and sink.
*
* The data sent to the new sink is kept in a memblockq before being
*
* Alignment is performed in two steps:
*
- * 1) when something happens that requires quick adjustement of the alignment of
+ * 1) when something happens that requires quick adjustment of the alignment of
* capture and playback samples, we perform a resync. This adjusts the
* position in the playback memblock to the requested sample. Quick
- * adjustements include moving the playback samples before the capture
+ * adjustments include moving the playback samples before the capture
* samples (because else the echo canceler does not work) or when the
* playback pointer drifts too far away.
*
- * 2) periodically check the difference between capture and playback. we use a
- * low and high watermark for adjusting the alignment. playback should always
+ * 2) periodically check the difference between capture and playback. We use a
+ * low and high watermark for adjusting the alignment. Playback should always
* be before capture and the difference should not be bigger than one frame
* size. We would ideally like to resample the sink_input but most driver
* don't give enough accuracy to be able to do that right now.
*/
+struct userdata;
+
+struct pa_echo_canceller_msg {
+ pa_msgobject parent;
+ struct userdata *userdata;
+};
+
+PA_DEFINE_PRIVATE_CLASS(pa_echo_canceller_msg, pa_msgobject);
+#define PA_ECHO_CANCELLER_MSG(o) (pa_echo_canceller_msg_cast(o))
+
struct snapshot {
pa_usec_t sink_now;
pa_usec_t sink_latency;
pa_core *core;
pa_module *module;
- uint32_t save_aec;
+ bool autoloaded;
+ bool dead;
+ bool save_aec;
pa_echo_canceller *ec;
- uint32_t blocksize;
+ uint32_t source_output_blocksize;
+ uint32_t source_blocksize;
+ uint32_t sink_blocksize;
- pa_bool_t need_realign;
+ bool need_realign;
/* to wakeup the source I/O thread */
- pa_bool_t in_push;
pa_asyncmsgq *asyncmsgq;
pa_rtpoll_item *rtpoll_item_read, *rtpoll_item_write;
pa_source *source;
- pa_bool_t source_auto_desc;
+ bool source_auto_desc;
pa_source_output *source_output;
pa_memblockq *source_memblockq; /* echo canceler needs fixed sized chunks */
size_t source_skip;
pa_sink *sink;
- pa_bool_t sink_auto_desc;
+ bool sink_auto_desc;
pa_sink_input *sink_input;
pa_memblockq *sink_memblockq;
int64_t send_counter; /* updated in sink IO thread */
int64_t recv_counter;
size_t sink_skip;
+ /* Bytes left over from previous iteration */
+ size_t sink_rem;
+ size_t source_rem;
+
pa_atomic_t request_resync;
- int active_mask;
pa_time_event *time_event;
pa_usec_t adjust_time;
+ int adjust_threshold;
FILE *captured_file;
FILE *played_file;
FILE *canceled_file;
+ FILE *drift_file;
+
+ bool use_volume_sharing;
+
+ struct {
+ pa_cvolume current_volume;
+ } thread_info;
};
static void source_output_snapshot_within_thread(struct userdata *u, struct snapshot *snapshot);
"sink_properties",
"sink_master",
"adjust_time",
+ "adjust_threshold",
"format",
"rate",
"channels",
"aec_method",
"aec_args",
"save_aec",
+ "autoloaded",
+ "use_volume_sharing",
NULL
};
SINK_INPUT_MESSAGE_LATENCY_SNAPSHOT
};
-static int64_t calc_diff(struct userdata *u, struct snapshot *snapshot) {
- int64_t buffer, diff_time, buffer_latency;
+enum {
+ ECHO_CANCELLER_MESSAGE_SET_VOLUME,
+};
- /* get the number of samples between capture and playback */
- if (snapshot->plen > snapshot->rlen)
- buffer = snapshot->plen - snapshot->rlen;
+static int64_t calc_diff(struct userdata *u, struct snapshot *snapshot) {
+ int64_t diff_time, buffer_latency;
+ pa_usec_t plen, rlen, source_delay, sink_delay, recv_counter, send_counter;
+
+ /* get latency difference between playback and record */
+ plen = pa_bytes_to_usec(snapshot->plen, &u->sink_input->sample_spec);
+ rlen = pa_bytes_to_usec(snapshot->rlen, &u->source_output->sample_spec);
+ if (plen > rlen)
+ buffer_latency = plen - rlen;
else
- buffer = 0;
+ buffer_latency = 0;
- buffer += snapshot->source_delay + snapshot->sink_delay;
+ source_delay = pa_bytes_to_usec(snapshot->source_delay, &u->source_output->sample_spec);
+ sink_delay = pa_bytes_to_usec(snapshot->sink_delay, &u->sink_input->sample_spec);
+ buffer_latency += source_delay + sink_delay;
- /* add the amount of samples not yet transfered to the source context */
- if (snapshot->recv_counter <= snapshot->send_counter)
- buffer += (int64_t) (snapshot->send_counter - snapshot->recv_counter);
+ /* add the latency difference due to samples not yet transferred */
+ send_counter = pa_bytes_to_usec(snapshot->send_counter, &u->sink->sample_spec);
+ recv_counter = pa_bytes_to_usec(snapshot->recv_counter, &u->sink->sample_spec);
+ if (recv_counter <= send_counter)
+ buffer_latency += (int64_t) (send_counter - recv_counter);
else
- buffer += PA_CLIP_SUB(buffer, (int64_t) (snapshot->recv_counter - snapshot->send_counter));
-
- /* convert to time */
- buffer_latency = pa_bytes_to_usec(buffer, &u->source_output->sample_spec);
+ buffer_latency += PA_CLIP_SUB(buffer_latency, (int64_t) (recv_counter - send_counter));
- /* capture and playback samples are perfectly aligned when diff_time is 0 */
+ /* capture and playback are perfectly aligned when diff_time is 0 */
diff_time = (snapshot->sink_now + snapshot->sink_latency - buffer_latency) -
(snapshot->source_now - snapshot->source_latency);
- pa_log_debug("diff %lld (%lld - %lld + %lld) %lld %lld %lld %lld", (long long) diff_time,
+ pa_log_debug("Diff %lld (%lld - %lld + %lld) %lld %lld %lld %lld", (long long) diff_time,
(long long) snapshot->sink_latency,
(long long) buffer_latency, (long long) snapshot->source_latency,
- (long long) snapshot->source_delay, (long long) snapshot->sink_delay,
- (long long) (snapshot->send_counter - snapshot->recv_counter),
+ (long long) source_delay, (long long) sink_delay,
+ (long long) (send_counter - recv_counter),
(long long) (snapshot->sink_now - snapshot->source_now));
return diff_time;
struct userdata *u = userdata;
uint32_t old_rate, base_rate, new_rate;
int64_t diff_time;
- size_t fs;
+ /*size_t fs*/
struct snapshot latency_snapshot;
pa_assert(u);
pa_assert(u->time_event == e);
pa_assert_ctl_context();
- if (u->active_mask != 3)
+ if (!IS_ACTIVE(u))
return;
/* update our snapshots */
/* calculate drift between capture and playback */
diff_time = calc_diff(u, &latency_snapshot);
- fs = pa_frame_size(&u->source_output->sample_spec);
+ /*fs = pa_frame_size(&u->source_output->sample_spec);*/
old_rate = u->sink_input->sample_spec.rate;
base_rate = u->source_output->sample_spec.rate;
* canceler does not work in this case. */
pa_asyncmsgq_post(u->asyncmsgq, PA_MSGOBJECT(u->source_output), SOURCE_OUTPUT_MESSAGE_APPLY_DIFF_TIME,
NULL, diff_time, NULL, NULL);
- //new_rate = base_rate - ((pa_usec_to_bytes (-diff_time, &u->source_output->sample_spec) / fs) * PA_USEC_PER_SEC) / u->adjust_time;
+ /*new_rate = base_rate - ((pa_usec_to_bytes(-diff_time, &u->source_output->sample_spec) / fs) * PA_USEC_PER_SEC) / u->adjust_time;*/
new_rate = base_rate;
}
else {
- if (diff_time > 1000) {
+ if (diff_time > u->adjust_threshold) {
/* diff too big, quickly adjust */
pa_asyncmsgq_post(u->asyncmsgq, PA_MSGOBJECT(u->source_output), SOURCE_OUTPUT_MESSAGE_APPLY_DIFF_TIME,
NULL, diff_time, NULL, NULL);
}
/* recording behind playback, we need to slowly adjust the rate to match */
- //new_rate = base_rate + ((pa_usec_to_bytes (diff_time, &u->source_output->sample_spec) / fs) * PA_USEC_PER_SEC) / u->adjust_time;
+ /*new_rate = base_rate + ((pa_usec_to_bytes(diff_time, &u->source_output->sample_spec) / fs) * PA_USEC_PER_SEC) / u->adjust_time;*/
/* assume equal samplerates for now */
new_rate = base_rate;
}
- /* make sure we don't make too big adjustements because that sounds horrible */
+ /* make sure we don't make too big adjustments because that sounds horrible */
if (new_rate > base_rate * 1.1 || new_rate < base_rate * 0.9)
new_rate = base_rate;
/* Add the latency internal to our source output on top */
pa_bytes_to_usec(pa_memblockq_get_length(u->source_output->thread_info.delay_memblockq), &u->source_output->source->sample_spec) +
/* and the buffering we do on the source */
- pa_bytes_to_usec(u->blocksize, &u->source_output->source->sample_spec);
+ pa_bytes_to_usec(u->source_output_blocksize, &u->source_output->source->sample_spec);
return 0;
+ case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
+ u->thread_info.current_volume = u->source->reference_volume;
+ break;
}
return pa_source_process_msg(o, code, data, offset, chunk);
return pa_sink_process_msg(o, code, data, offset, chunk);
}
-
/* Called from main context */
static int source_set_state_cb(pa_source *s, pa_source_state_t state) {
struct userdata *u;
!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
return 0;
- pa_log_debug("Source state %d %d", state, u->active_mask);
-
if (state == PA_SOURCE_RUNNING) {
/* restart timer when both sink and source are active */
- u->active_mask |= 1;
- if (u->active_mask == 3)
+ if (IS_ACTIVE(u) && u->adjust_time)
pa_core_rttime_restart(u->core, u->time_event, pa_rtclock_now() + u->adjust_time);
- pa_atomic_store (&u->request_resync, 1);
- pa_source_output_cork(u->source_output, FALSE);
+ pa_atomic_store(&u->request_resync, 1);
+ pa_source_output_cork(u->source_output, false);
} else if (state == PA_SOURCE_SUSPENDED) {
- u->active_mask &= ~1;
- pa_source_output_cork(u->source_output, TRUE);
+ pa_source_output_cork(u->source_output, true);
}
+
return 0;
}
!PA_SINK_INPUT_IS_LINKED(pa_sink_input_get_state(u->sink_input)))
return 0;
- pa_log_debug("Sink state %d %d", state, u->active_mask);
-
if (state == PA_SINK_RUNNING) {
/* restart timer when both sink and source are active */
- u->active_mask |= 2;
- if (u->active_mask == 3)
+ if (IS_ACTIVE(u) && u->adjust_time)
pa_core_rttime_restart(u->core, u->time_event, pa_rtclock_now() + u->adjust_time);
- pa_atomic_store (&u->request_resync, 1);
- pa_sink_input_cork(u->sink_input, FALSE);
+ pa_atomic_store(&u->request_resync, 1);
+ pa_sink_input_cork(u->sink_input, false);
} else if (state == PA_SINK_SUSPENDED) {
- u->active_mask &= ~2;
- pa_sink_input_cork(u->sink_input, TRUE);
+ pa_sink_input_cork(u->sink_input, true);
}
+
return 0;
}
-/* Called from I/O thread context */
+/* Called from source I/O thread context */
static void source_update_requested_latency_cb(pa_source *s) {
struct userdata *u;
pa_source_get_requested_latency_within_thread(s));
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context */
static void sink_update_requested_latency_cb(pa_sink *s) {
struct userdata *u;
pa_sink_get_requested_latency_within_thread(s));
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context */
static void sink_request_rewind_cb(pa_sink *s) {
struct userdata *u;
/* Just hand this one over to the master sink */
pa_sink_input_request_rewind(u->sink_input,
- s->thread_info.rewind_nbytes, TRUE, FALSE, FALSE);
+ s->thread_info.rewind_nbytes, true, false, false);
}
/* Called from main context */
!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
return;
- /* FIXME, no volume control in source_output, set volume at the master */
- pa_source_set_volume(u->source_output->source, &s->volume, TRUE);
+ pa_source_output_set_volume(u->source_output, &s->real_volume, s->save_volume, true);
}
/* Called from main context */
!PA_SINK_INPUT_IS_LINKED(pa_sink_input_get_state(u->sink_input)))
return;
- pa_sink_input_set_volume(u->sink_input, &s->real_volume, s->save_volume, TRUE);
+ pa_sink_input_set_volume(u->sink_input, &s->real_volume, s->save_volume, true);
}
+/* Called from main context. */
static void source_get_volume_cb(pa_source *s) {
struct userdata *u;
+ pa_cvolume v;
pa_source_assert_ref(s);
pa_assert_se(u = s->userdata);
!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
return;
- /* FIXME, no volume control in source_output, get the info from the master */
- pa_source_get_volume(u->source_output->source, TRUE);
+ pa_source_output_get_volume(u->source_output, &v, true);
- if (pa_cvolume_equal(&s->volume,&u->source_output->source->volume))
+ if (pa_cvolume_equal(&s->real_volume, &v))
/* no change */
return;
- s->volume = u->source_output->source->volume;
+ s->real_volume = v;
pa_source_set_soft_volume(s, NULL);
}
-
/* Called from main context */
static void source_set_mute_cb(pa_source *s) {
struct userdata *u;
!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
return;
- /* FIXME, no volume control in source_output, set mute at the master */
- pa_source_set_mute(u->source_output->source, TRUE, TRUE);
+ pa_source_output_set_mute(u->source_output, s->muted, s->save_muted);
}
/* Called from main context */
pa_sink_input_set_mute(u->sink_input, s->muted, s->save_muted);
}
-/* Called from main context */
-static void source_get_mute_cb(pa_source *s) {
- struct userdata *u;
-
- pa_source_assert_ref(s);
- pa_assert_se(u = s->userdata);
-
- if (!PA_SOURCE_IS_LINKED(pa_source_get_state(s)) ||
- !PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
- return;
-
- /* FIXME, no volume control in source_output, get the info from the master */
- pa_source_get_mute(u->source_output->source, TRUE);
-}
-
-/* must be called from the input thread context */
+/* Called from source I/O thread context. */
static void apply_diff_time(struct userdata *u, int64_t diff_time) {
int64_t diff;
if (diff_time < 0) {
- diff = pa_usec_to_bytes (-diff_time, &u->source_output->sample_spec);
+ diff = pa_usec_to_bytes(-diff_time, &u->sink_input->sample_spec);
if (diff > 0) {
/* add some extra safety samples to compensate for jitter in the
* timings */
- diff += 10 * pa_frame_size (&u->source_output->sample_spec);
+ diff += 10 * pa_frame_size (&u->sink_input->sample_spec);
pa_log("Playback after capture (%lld), drop sink %lld", (long long) diff_time, (long long) diff);
u->source_skip = 0;
}
} else if (diff_time > 0) {
- diff = pa_usec_to_bytes (diff_time, &u->source_output->sample_spec);
+ diff = pa_usec_to_bytes(diff_time, &u->source_output->sample_spec);
if (diff > 0) {
- pa_log("playback too far ahead (%lld), drop source %lld", (long long) diff_time, (long long) diff);
+ pa_log("Playback too far ahead (%lld), drop source %lld", (long long) diff_time, (long long) diff);
u->source_skip = diff;
u->sink_skip = 0;
}
}
-/* must be called from the input thread */
+/* Called from source I/O thread context. */
static void do_resync(struct userdata *u) {
int64_t diff_time;
struct snapshot latency_snapshot;
apply_diff_time(u, diff_time);
}
-/* Called from input thread context */
+/* 1. Calculate drift at this point, pass to canceller
+ * 2. Push out playback samples in blocksize chunks
+ * 3. Push out capture samples in blocksize chunks
+ * 4. ???
+ * 5. Profit
+ *
+ * Called from source I/O thread context.
+ */
+static void do_push_drift_comp(struct userdata *u) {
+ size_t rlen, plen;
+ pa_memchunk rchunk, pchunk, cchunk;
+ uint8_t *rdata, *pdata, *cdata;
+ float drift;
+ int unused PA_GCC_UNUSED;
+
+ rlen = pa_memblockq_get_length(u->source_memblockq);
+ plen = pa_memblockq_get_length(u->sink_memblockq);
+
+ /* Estimate snapshot drift as follows:
+ * pd: amount of data consumed since last time
+ * rd: amount of data consumed since last time
+ *
+ * drift = (pd - rd) / rd;
+ *
+ * We calculate pd and rd as the memblockq length less the number of
+ * samples left from the last iteration (to avoid double counting
+ * those remainder samples.
+ */
+ drift = ((float)(plen - u->sink_rem) - (rlen - u->source_rem)) / ((float)(rlen - u->source_rem));
+ u->sink_rem = plen % u->sink_blocksize;
+ u->source_rem = rlen % u->source_output_blocksize;
+
+ /* Now let the canceller work its drift compensation magic */
+ u->ec->set_drift(u->ec, drift);
+
+ if (u->save_aec) {
+ if (u->drift_file)
+ fprintf(u->drift_file, "d %a\n", drift);
+ }
+
+ /* Send in the playback samples first */
+ while (plen >= u->sink_blocksize) {
+ pa_memblockq_peek_fixed_size(u->sink_memblockq, u->sink_blocksize, &pchunk);
+ pdata = pa_memblock_acquire(pchunk.memblock);
+ pdata += pchunk.index;
+
+ u->ec->play(u->ec, pdata);
+
+ if (u->save_aec) {
+ if (u->drift_file)
+ fprintf(u->drift_file, "p %d\n", u->sink_blocksize);
+ if (u->played_file)
+ unused = fwrite(pdata, 1, u->sink_blocksize, u->played_file);
+ }
+
+ pa_memblock_release(pchunk.memblock);
+ pa_memblockq_drop(u->sink_memblockq, u->sink_blocksize);
+ pa_memblock_unref(pchunk.memblock);
+
+ plen -= u->sink_blocksize;
+ }
+
+ /* And now the capture samples */
+ while (rlen >= u->source_output_blocksize) {
+ pa_memblockq_peek_fixed_size(u->source_memblockq, u->source_output_blocksize, &rchunk);
+
+ rdata = pa_memblock_acquire(rchunk.memblock);
+ rdata += rchunk.index;
+
+ cchunk.index = 0;
+ cchunk.length = u->source_output_blocksize;
+ cchunk.memblock = pa_memblock_new(u->source->core->mempool, cchunk.length);
+ cdata = pa_memblock_acquire(cchunk.memblock);
+
+ u->ec->record(u->ec, rdata, cdata);
+
+ if (u->save_aec) {
+ if (u->drift_file)
+ fprintf(u->drift_file, "c %d\n", u->source_output_blocksize);
+ if (u->captured_file)
+ unused = fwrite(rdata, 1, u->source_output_blocksize, u->captured_file);
+ if (u->canceled_file)
+ unused = fwrite(cdata, 1, u->source_output_blocksize, u->canceled_file);
+ }
+
+ pa_memblock_release(cchunk.memblock);
+ pa_memblock_release(rchunk.memblock);
+
+ pa_memblock_unref(rchunk.memblock);
+
+ pa_source_post(u->source, &cchunk);
+ pa_memblock_unref(cchunk.memblock);
+
+ pa_memblockq_drop(u->source_memblockq, u->source_output_blocksize);
+ rlen -= u->source_output_blocksize;
+ }
+}
+
+/* This one's simpler than the drift compensation case -- we just iterate over
+ * the capture buffer, and pass the canceller blocksize bytes of playback and
+ * capture data.
+ *
+ * Called from source I/O thread context. */
+static void do_push(struct userdata *u) {
+ size_t rlen, plen;
+ pa_memchunk rchunk, pchunk, cchunk;
+ uint8_t *rdata, *pdata, *cdata;
+ int unused PA_GCC_UNUSED;
+
+ rlen = pa_memblockq_get_length(u->source_memblockq);
+ plen = pa_memblockq_get_length(u->sink_memblockq);
+
+ while (rlen >= u->source_output_blocksize) {
+
+ /* take fixed blocks from recorded and played samples */
+ pa_memblockq_peek_fixed_size(u->source_memblockq, u->source_output_blocksize, &rchunk);
+ pa_memblockq_peek_fixed_size(u->sink_memblockq, u->sink_blocksize, &pchunk);
+
+ /* we ran out of played data and pchunk has been filled with silence bytes */
+ if (plen < u->sink_blocksize)
+ pa_memblockq_seek(u->sink_memblockq, u->sink_blocksize - plen, PA_SEEK_RELATIVE, true);
+
+ rdata = pa_memblock_acquire(rchunk.memblock);
+ rdata += rchunk.index;
+ pdata = pa_memblock_acquire(pchunk.memblock);
+ pdata += pchunk.index;
+
+ cchunk.index = 0;
+ cchunk.length = u->source_blocksize;
+ cchunk.memblock = pa_memblock_new(u->source->core->mempool, cchunk.length);
+ cdata = pa_memblock_acquire(cchunk.memblock);
+
+ if (u->save_aec) {
+ if (u->captured_file)
+ unused = fwrite(rdata, 1, u->source_output_blocksize, u->captured_file);
+ if (u->played_file)
+ unused = fwrite(pdata, 1, u->sink_blocksize, u->played_file);
+ }
+
+ /* perform echo cancellation */
+ u->ec->run(u->ec, rdata, pdata, cdata);
+
+ if (u->save_aec) {
+ if (u->canceled_file)
+ unused = fwrite(cdata, 1, u->source_blocksize, u->canceled_file);
+ }
+
+ pa_memblock_release(cchunk.memblock);
+ pa_memblock_release(pchunk.memblock);
+ pa_memblock_release(rchunk.memblock);
+
+ /* drop consumed source samples */
+ pa_memblockq_drop(u->source_memblockq, u->source_output_blocksize);
+ pa_memblock_unref(rchunk.memblock);
+ rlen -= u->source_output_blocksize;
+
+ /* drop consumed sink samples */
+ pa_memblockq_drop(u->sink_memblockq, u->sink_blocksize);
+ pa_memblock_unref(pchunk.memblock);
+
+ if (plen >= u->sink_blocksize)
+ plen -= u->sink_blocksize;
+ else
+ plen = 0;
+
+ /* forward the (echo-canceled) data to the virtual source */
+ pa_source_post(u->source, &cchunk);
+ pa_memblock_unref(cchunk.memblock);
+ }
+}
+
+/* Called from source I/O thread context. */
static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
struct userdata *u;
- size_t rlen, plen;
+ size_t rlen, plen, to_skip;
+ pa_memchunk rchunk;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
if (!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output))) {
- pa_log("push when no link?");
+ pa_log("Push when no link?");
return;
}
- /* handle queued messages */
- u->in_push = TRUE;
+ if (PA_UNLIKELY(u->source->thread_info.state != PA_SOURCE_RUNNING ||
+ u->sink->thread_info.state != PA_SINK_RUNNING)) {
+ pa_source_post(u->source, chunk);
+ return;
+ }
+
+ /* handle queued messages, do any message sending of our own */
while (pa_asyncmsgq_process_one(u->asyncmsgq) > 0)
;
- u->in_push = FALSE;
-
- if (pa_atomic_cmpxchg (&u->request_resync, 1, 0)) {
- do_resync (u);
- }
pa_memblockq_push_align(u->source_memblockq, chunk);
rlen = pa_memblockq_get_length(u->source_memblockq);
plen = pa_memblockq_get_length(u->sink_memblockq);
- while (rlen >= u->blocksize) {
- pa_memchunk rchunk, pchunk;
-
- /* take fixed block from recorded samples */
- pa_memblockq_peek_fixed_size(u->source_memblockq, u->blocksize, &rchunk);
-
- if (plen > u->blocksize && u->source_skip == 0) {
- uint8_t *rdata, *pdata, *cdata;
- pa_memchunk cchunk;
-
- if (u->sink_skip) {
- size_t to_skip;
-
- if (u->sink_skip > plen)
- to_skip = plen;
- else
- to_skip = u->sink_skip;
+ /* Let's not do anything else till we have enough data to process */
+ if (rlen < u->source_output_blocksize)
+ return;
- pa_memblockq_drop(u->sink_memblockq, to_skip);
- plen -= to_skip;
+ /* See if we need to drop samples in order to sync */
+ if (pa_atomic_cmpxchg (&u->request_resync, 1, 0)) {
+ do_resync(u);
+ }
- u->sink_skip -= to_skip;
- }
+ /* Okay, skip cancellation for skipped source samples if needed. */
+ if (PA_UNLIKELY(u->source_skip)) {
+ /* The slightly tricky bit here is that we drop all but modulo
+ * blocksize bytes and then adjust for that last bit on the sink side.
+ * We do this because the source data is coming at a fixed rate, which
+ * means the only way to try to catch up is drop sink samples and let
+ * the canceller cope up with this. */
+ to_skip = rlen >= u->source_skip ? u->source_skip : rlen;
+ to_skip -= to_skip % u->source_output_blocksize;
+
+ if (to_skip) {
+ pa_memblockq_peek_fixed_size(u->source_memblockq, to_skip, &rchunk);
+ pa_source_post(u->source, &rchunk);
+
+ pa_memblock_unref(rchunk.memblock);
+ pa_memblockq_drop(u->source_memblockq, to_skip);
+
+ rlen -= to_skip;
+ u->source_skip -= to_skip;
+ }
- if (plen > u->blocksize && u->sink_skip == 0) {
- /* take fixed block from played samples */
- pa_memblockq_peek_fixed_size(u->sink_memblockq, u->blocksize, &pchunk);
-
- rdata = pa_memblock_acquire(rchunk.memblock);
- rdata += rchunk.index;
- pdata = pa_memblock_acquire(pchunk.memblock);
- pdata += pchunk.index;
-
- cchunk.index = 0;
- cchunk.length = u->blocksize;
- cchunk.memblock = pa_memblock_new(u->source->core->mempool, cchunk.length);
- cdata = pa_memblock_acquire(cchunk.memblock);
-
- /* perform echo cancelation */
- u->ec->run(u->ec, rdata, pdata, cdata);
-
- if (u->save_aec) {
- if (u->captured_file)
- fwrite(rdata, 1, u->blocksize, u->captured_file);
- if (u->played_file)
- fwrite(pdata, 1, u->blocksize, u->played_file);
- if (u->canceled_file)
- fwrite(cdata, 1, u->blocksize, u->canceled_file);
- pa_log_debug("AEC frame saved.");
- }
-
- pa_memblock_release(cchunk.memblock);
- pa_memblock_release(pchunk.memblock);
- pa_memblock_release(rchunk.memblock);
-
- /* drop consumed sink samples */
- pa_memblockq_drop(u->sink_memblockq, u->blocksize);
- pa_memblock_unref(pchunk.memblock);
-
- pa_memblock_unref(rchunk.memblock);
- /* the filtered samples now become the samples from our
- * source */
- rchunk = cchunk;
-
- plen -= u->blocksize;
- }
+ if (rlen && u->source_skip % u->source_output_blocksize) {
+ u->sink_skip += (uint64_t) (u->source_output_blocksize - (u->source_skip % u->source_output_blocksize)) * u->sink_blocksize / u->source_output_blocksize;
+ u->source_skip -= (u->source_skip % u->source_output_blocksize);
}
+ }
- /* forward the (echo-canceled) data to the virtual source */
- pa_source_post(u->source, &rchunk);
- pa_memblock_unref(rchunk.memblock);
+ /* And for the sink, these samples have been played back already, so we can
+ * just drop them and get on with it. */
+ if (PA_UNLIKELY(u->sink_skip)) {
+ to_skip = plen >= u->sink_skip ? u->sink_skip : plen;
- pa_memblockq_drop(u->source_memblockq, u->blocksize);
- rlen -= u->blocksize;
+ pa_memblockq_drop(u->sink_memblockq, to_skip);
- if (u->source_skip) {
- if (u->source_skip > u->blocksize) {
- u->source_skip -= u->blocksize;
- }
- else {
- u->sink_skip += (u->blocksize - u->source_skip);
- u->source_skip = 0;
- }
- }
+ plen -= to_skip;
+ u->sink_skip -= to_skip;
}
+
+ /* process and push out samples */
+ if (u->ec->params.drift_compensation)
+ do_push_drift_comp(u);
+ else
+ do_push(u);
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context. */
static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
struct userdata *u;
if (i->thread_info.underrun_for > 0) {
pa_log_debug("Handling end of underrun.");
- pa_atomic_store (&u->request_resync, 1);
+ pa_atomic_store(&u->request_resync, 1);
}
/* let source thread handle the chunk. pass the sample count as well so that
return 0;
}
-/* Called from input thread context */
+/* Called from source I/O thread context. */
static void source_output_process_rewind_cb(pa_source_output *o, size_t nbytes) {
struct userdata *u;
pa_memblockq_rewind(u->sink_memblockq, nbytes);
/* manipulate write index */
- pa_memblockq_seek(u->source_memblockq, -nbytes, PA_SEEK_RELATIVE, TRUE);
+ pa_memblockq_seek(u->source_memblockq, -nbytes, PA_SEEK_RELATIVE, true);
pa_log_debug("Source rewind (%lld) %lld", (long long) nbytes,
(long long) pa_memblockq_get_length (u->source_memblockq));
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context. */
static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
struct userdata *u;
u->send_counter -= nbytes;
}
+/* Called from source I/O thread context. */
static void source_output_snapshot_within_thread(struct userdata *u, struct snapshot *snapshot) {
size_t delay, rlen, plen;
pa_usec_t now, latency;
snapshot->plen = plen + u->source_skip;
}
-
-/* Called from output thread context */
+/* Called from source I/O thread context. */
static int source_output_process_msg_cb(pa_msgobject *obj, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SOURCE_OUTPUT(obj)->userdata;
pa_source_output_assert_io_context(u->source_output);
- if (PA_SOURCE_IS_OPENED(u->source_output->source->thread_info.state))
+ if (u->source_output->source->thread_info.state == PA_SOURCE_RUNNING)
pa_memblockq_push_align(u->sink_memblockq, chunk);
else
- pa_memblockq_flush_write(u->sink_memblockq, TRUE);
+ pa_memblockq_flush_write(u->sink_memblockq, true);
u->recv_counter += (int64_t) chunk->length;
/* manipulate write index, never go past what we have */
if (PA_SOURCE_IS_OPENED(u->source_output->source->thread_info.state))
- pa_memblockq_seek(u->sink_memblockq, -offset, PA_SEEK_RELATIVE, TRUE);
+ pa_memblockq_seek(u->sink_memblockq, -offset, PA_SEEK_RELATIVE, true);
else
- pa_memblockq_flush_write(u->sink_memblockq, TRUE);
+ pa_memblockq_flush_write(u->sink_memblockq, true);
pa_log_debug("Sink rewind (%lld)", (long long) offset);
return pa_source_output_process_msg(obj, code, data, offset, chunk);
}
+/* Called from sink I/O thread context. */
static int sink_input_process_msg_cb(pa_msgobject *obj, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SINK_INPUT(obj)->userdata;
return pa_sink_input_process_msg(obj, code, data, offset, chunk);
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context. */
static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
struct userdata *u;
pa_log_debug("Sink input update max rewind %lld", (long long) nbytes);
- pa_memblockq_set_maxrewind (u->sink_memblockq, nbytes);
+ /* FIXME: Too small max_rewind:
+ * https://bugs.freedesktop.org/show_bug.cgi?id=53709 */
+ pa_memblockq_set_maxrewind(u->sink_memblockq, nbytes);
pa_sink_set_max_rewind_within_thread(u->sink, nbytes);
}
-/* Called from I/O thread context */
+/* Called from source I/O thread context. */
static void source_output_update_max_rewind_cb(pa_source_output *o, size_t nbytes) {
struct userdata *u;
pa_source_set_max_rewind_within_thread(u->source, nbytes);
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context. */
static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) {
struct userdata *u;
pa_sink_set_max_request_within_thread(u->sink, nbytes);
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context. */
static void sink_input_update_sink_requested_latency_cb(pa_sink_input *i) {
struct userdata *u;
pa_usec_t latency;
pa_log_debug("Sink input update requested latency %lld", (long long) latency);
}
-/* Called from I/O thread context */
+/* Called from source I/O thread context. */
static void source_output_update_source_requested_latency_cb(pa_source_output *o) {
struct userdata *u;
pa_usec_t latency;
latency = pa_source_get_requested_latency_within_thread(o->source);
- pa_log_debug("source output update requested latency %lld", (long long) latency);
+ pa_log_debug("Source output update requested latency %lld", (long long) latency);
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context. */
static void sink_input_update_sink_latency_range_cb(pa_sink_input *i) {
struct userdata *u;
pa_sink_set_latency_range_within_thread(u->sink, i->sink->thread_info.min_latency, i->sink->thread_info.max_latency);
}
-/* Called from I/O thread context */
+/* Called from source I/O thread context. */
static void source_output_update_source_latency_range_cb(pa_source_output *o) {
struct userdata *u;
pa_source_set_latency_range_within_thread(u->source, o->source->thread_info.min_latency, o->source->thread_info.max_latency);
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context. */
static void sink_input_update_sink_fixed_latency_cb(pa_sink_input *i) {
struct userdata *u;
pa_sink_set_fixed_latency_within_thread(u->sink, i->sink->thread_info.fixed_latency);
}
-/* Called from I/O thread context */
+/* Called from source I/O thread context. */
static void source_output_update_source_fixed_latency_cb(pa_source_output *o) {
struct userdata *u;
pa_source_set_fixed_latency_within_thread(u->source, o->source->thread_info.fixed_latency);
}
-/* Called from output thread context */
+/* Called from source I/O thread context. */
static void source_output_attach_cb(pa_source_output *o) {
struct userdata *u;
pa_source_set_fixed_latency_within_thread(u->source, o->source->thread_info.fixed_latency);
pa_source_set_max_rewind_within_thread(u->source, pa_source_output_get_max_rewind(o));
- pa_log_debug("Source output %p attach", o);
+ pa_log_debug("Source output %d attach", o->index);
pa_source_attach_within_thread(u->source);
u->asyncmsgq);
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context. */
static void sink_input_attach_cb(pa_sink_input *i) {
struct userdata *u;
* pa_sink_input_get_max_request(i) UP TO MULTIPLES OF IT
* HERE. SEE (6) */
pa_sink_set_max_request_within_thread(u->sink, pa_sink_input_get_max_request(i));
+
+ /* FIXME: Too small max_rewind:
+ * https://bugs.freedesktop.org/show_bug.cgi?id=53709 */
pa_sink_set_max_rewind_within_thread(u->sink, pa_sink_input_get_max_rewind(i));
- pa_log_debug("Sink input %p attach", i);
+ pa_log_debug("Sink input %d attach", i->index);
u->rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write(
i->sink->thread_info.rtpoll,
pa_sink_attach_within_thread(u->sink);
}
-
-/* Called from output thread context */
+/* Called from source I/O thread context. */
static void source_output_detach_cb(pa_source_output *o) {
struct userdata *u;
pa_source_detach_within_thread(u->source);
pa_source_set_rtpoll(u->source, NULL);
- pa_log_debug("Source output %p detach", o);
+ pa_log_debug("Source output %d detach", o->index);
if (u->rtpoll_item_read) {
pa_rtpoll_item_free(u->rtpoll_item_read);
}
}
-/* Called from I/O thread context */
+/* Called from sink I/O thread context. */
static void sink_input_detach_cb(pa_sink_input *i) {
struct userdata *u;
pa_sink_set_rtpoll(u->sink, NULL);
- pa_log_debug("Sink input %p detach", i);
+ pa_log_debug("Sink input %d detach", i->index);
if (u->rtpoll_item_write) {
pa_rtpoll_item_free(u->rtpoll_item_write);
}
}
-/* Called from output thread context */
+/* Called from source I/O thread context. */
static void source_output_state_change_cb(pa_source_output *o, pa_source_output_state_t state) {
struct userdata *u;
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
- pa_log_debug("Source output %p state %d", o, state);
+ pa_log_debug("Source output %d state %d", o->index, state);
}
-/* Called from IO thread context */
+/* Called from sink I/O thread context. */
static void sink_input_state_change_cb(pa_sink_input *i, pa_sink_input_state_t state) {
struct userdata *u;
pa_sink_input_assert_ref(i);
pa_assert_se(u = i->userdata);
- pa_log_debug("Sink input %p state %d", i, state);
+ pa_log_debug("Sink input %d state %d", i->index, state);
/* If we are added for the first time, ask for a rewinding so that
* we are heard right-away. */
if (PA_SINK_INPUT_IS_LINKED(state) &&
i->thread_info.state == PA_SINK_INPUT_INIT) {
pa_log_debug("Requesting rewind due to state change.");
- pa_sink_input_request_rewind(i, 0, FALSE, TRUE, TRUE);
+ pa_sink_input_request_rewind(i, 0, false, true, true);
}
}
-/* Called from main thread */
+/* Called from main context. */
static void source_output_kill_cb(pa_source_output *o) {
struct userdata *u;
pa_assert_ctl_context();
pa_assert_se(u = o->userdata);
+ u->dead = true;
+
/* The order here matters! We first kill the source output, followed
* by the source. That means the source callbacks must be protected
* against an unconnected source output! */
pa_source_unref(u->source);
u->source = NULL;
- pa_log_debug("Source output kill %p", o);
+ pa_log_debug("Source output kill %d", o->index);
- pa_module_unload_request(u->module, TRUE);
+ pa_module_unload_request(u->module, true);
}
/* Called from main context */
pa_sink_input_assert_ref(i);
pa_assert_se(u = i->userdata);
+ u->dead = true;
+
/* The order here matters! We first kill the sink input, followed
* by the sink. That means the sink callbacks must be protected
* against an unconnected sink input! */
pa_sink_unref(u->sink);
u->sink = NULL;
- pa_log_debug("Sink input kill %p", i);
+ pa_log_debug("Sink input kill %d", i->index);
- pa_module_unload_request(u->module, TRUE);
+ pa_module_unload_request(u->module, true);
}
-/* Called from main thread */
-static pa_bool_t source_output_may_move_to_cb(pa_source_output *o, pa_source *dest) {
+/* Called from main context. */
+static bool source_output_may_move_to_cb(pa_source_output *o, pa_source *dest) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert_se(u = o->userdata);
+ if (u->dead || u->autoloaded)
+ return false;
+
return (u->source != dest) && (u->sink != dest->monitor_of);
}
/* Called from main context */
-static pa_bool_t sink_input_may_move_to_cb(pa_sink_input *i, pa_sink *dest) {
+static bool sink_input_may_move_to_cb(pa_sink_input *i, pa_sink *dest) {
struct userdata *u;
pa_sink_input_assert_ref(i);
pa_assert_se(u = i->userdata);
+ if (u->dead || u->autoloaded)
+ return false;
+
return u->sink != dest;
}
-/* Called from main thread */
+/* Called from main context. */
static void source_output_moving_cb(pa_source_output *o, pa_source *dest) {
struct userdata *u;
pa_source_set_asyncmsgq(u->source, NULL);
if (u->source_auto_desc && dest) {
- const char *z;
+ const char *y, *z;
pa_proplist *pl;
pl = pa_proplist_new();
+ y = pa_proplist_gets(u->sink_input->sink->proplist, PA_PROP_DEVICE_DESCRIPTION);
z = pa_proplist_gets(dest->proplist, PA_PROP_DEVICE_DESCRIPTION);
- pa_proplist_setf(pl, PA_PROP_DEVICE_DESCRIPTION, "Echo-Cancel Source %s on %s",
- pa_proplist_gets(u->source->proplist, "device.echo-cancel.name"), z ? z : dest->name);
+ pa_proplist_setf(pl, PA_PROP_DEVICE_DESCRIPTION, "%s (echo cancelled with %s)", z ? z : dest->name,
+ y ? y : u->sink_input->sink->name);
pa_source_update_proplist(u->source, PA_UPDATE_REPLACE, pl);
pa_proplist_free(pl);
pa_sink_set_asyncmsgq(u->sink, NULL);
if (u->sink_auto_desc && dest) {
- const char *z;
+ const char *y, *z;
pa_proplist *pl;
pl = pa_proplist_new();
+ y = pa_proplist_gets(u->source_output->source->proplist, PA_PROP_DEVICE_DESCRIPTION);
z = pa_proplist_gets(dest->proplist, PA_PROP_DEVICE_DESCRIPTION);
- pa_proplist_setf(pl, PA_PROP_DEVICE_DESCRIPTION, "Echo-Cancel Sink %s on %s",
- pa_proplist_gets(u->sink->proplist, "device.echo-cancel.name"), z ? z : dest->name);
+ pa_proplist_setf(pl, PA_PROP_DEVICE_DESCRIPTION, "%s (echo cancelled with %s)", z ? z : dest->name,
+ y ? y : u->source_output->source->name);
pa_sink_update_proplist(u->sink, PA_UPDATE_REPLACE, pl);
pa_proplist_free(pl);
pa_sink_mute_changed(u->sink, i->muted);
}
-static pa_echo_canceller_method_t get_ec_method_from_string(const char *method)
-{
- if (strcmp(method, "speex") == 0)
+/* Called from main context */
+static int canceller_process_msg_cb(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
+ struct pa_echo_canceller_msg *msg;
+ struct userdata *u;
+
+ pa_assert(o);
+
+ msg = PA_ECHO_CANCELLER_MSG(o);
+ u = msg->userdata;
+
+ switch (code) {
+ case ECHO_CANCELLER_MESSAGE_SET_VOLUME: {
+ pa_cvolume *v = (pa_cvolume *) userdata;
+
+ if (u->use_volume_sharing)
+ pa_source_set_volume(u->source, v, true, false);
+ else
+ pa_source_output_set_volume(u->source_output, v, false, true);
+
+ break;
+ }
+
+ default:
+ pa_assert_not_reached();
+ break;
+ }
+
+ return 0;
+}
+
+/* Called by the canceller, so source I/O thread context. */
+void pa_echo_canceller_get_capture_volume(pa_echo_canceller *ec, pa_cvolume *v) {
+ *v = ec->msg->userdata->thread_info.current_volume;
+}
+
+/* Called by the canceller, so source I/O thread context. */
+void pa_echo_canceller_set_capture_volume(pa_echo_canceller *ec, pa_cvolume *v) {
+ if (!pa_cvolume_equal(&ec->msg->userdata->thread_info.current_volume, v)) {
+ pa_cvolume *vol = pa_xnewdup(pa_cvolume, v, 1);
+
+ pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(ec->msg), ECHO_CANCELLER_MESSAGE_SET_VOLUME, vol, 0, NULL,
+ pa_xfree);
+ }
+}
+
+uint32_t pa_echo_canceller_blocksize_power2(unsigned rate, unsigned ms) {
+ unsigned nframes = (rate * ms) / 1000;
+ uint32_t y = 1 << ((8 * sizeof(uint32_t)) - 2);
+
+ assert(rate >= 4000);
+ assert(ms >= 1);
+
+ /* nframes should be a power of 2, round down to nearest power of two */
+ while (y > nframes)
+ y >>= 1;
+
+ assert(y >= 1);
+ return y;
+}
+
+static pa_echo_canceller_method_t get_ec_method_from_string(const char *method) {
+ if (pa_streq(method, "null"))
+ return PA_ECHO_CANCELLER_NULL;
+#ifdef HAVE_SPEEX
+ if (pa_streq(method, "speex"))
return PA_ECHO_CANCELLER_SPEEX;
- else if (strcmp(method, "adrian") == 0)
+#endif
+#ifdef HAVE_ADRIAN_EC
+ if (pa_streq(method, "adrian"))
return PA_ECHO_CANCELLER_ADRIAN;
- else
- return PA_ECHO_CANCELLER_INVALID;
+#endif
+#ifdef HAVE_WEBRTC
+ if (pa_streq(method, "webrtc"))
+ return PA_ECHO_CANCELLER_WEBRTC;
+#endif
+ return PA_ECHO_CANCELLER_INVALID;
}
+/* Common initialisation bits between module-echo-cancel and the standalone
+ * test program.
+ *
+ * Called from main context. */
+static int init_common(pa_modargs *ma, struct userdata *u, pa_sample_spec *source_ss, pa_channel_map *source_map) {
+ const char *ec_string;
+ pa_echo_canceller_method_t ec_method;
+
+ if (pa_modargs_get_sample_spec_and_channel_map(ma, source_ss, source_map, PA_CHANNEL_MAP_DEFAULT) < 0) {
+ pa_log("Invalid sample format specification or channel map");
+ goto fail;
+ }
+
+ u->ec = pa_xnew0(pa_echo_canceller, 1);
+ if (!u->ec) {
+ pa_log("Failed to alloc echo canceller");
+ goto fail;
+ }
+
+ ec_string = pa_modargs_get_value(ma, "aec_method", DEFAULT_ECHO_CANCELLER);
+ if ((ec_method = get_ec_method_from_string(ec_string)) < 0) {
+ pa_log("Invalid echo canceller implementation '%s'", ec_string);
+ goto fail;
+ }
+
+ pa_log_info("Using AEC engine: %s", ec_string);
+
+ u->ec->init = ec_table[ec_method].init;
+ u->ec->play = ec_table[ec_method].play;
+ u->ec->record = ec_table[ec_method].record;
+ u->ec->set_drift = ec_table[ec_method].set_drift;
+ u->ec->run = ec_table[ec_method].run;
+ u->ec->done = ec_table[ec_method].done;
+
+ return 0;
+
+fail:
+ return -1;
+}
+
+/* Called from main context. */
int pa__init(pa_module*m) {
struct userdata *u;
- pa_sample_spec source_ss, sink_ss;
- pa_channel_map source_map, sink_map;
+ pa_sample_spec source_output_ss, source_ss, sink_ss;
+ pa_channel_map source_output_map, source_map, sink_map;
pa_modargs *ma;
pa_source *source_master=NULL;
pa_sink *sink_master=NULL;
pa_source_new_data source_data;
pa_sink_new_data sink_data;
pa_memchunk silence;
- pa_echo_canceller_method_t ec_method;
- uint32_t adjust_time_sec;
+ uint32_t temp;
+ uint32_t nframes = 0;
pa_assert(m);
}
pa_assert(sink_master);
- source_ss = source_master->sample_spec;
- source_map = source_master->channel_map;
- if (pa_modargs_get_sample_spec_and_channel_map(ma, &source_ss, &source_map, PA_CHANNEL_MAP_DEFAULT) < 0) {
- pa_log("Invalid sample format specification or channel map");
+ if (source_master->monitor_of == sink_master) {
+ pa_log("Can't cancel echo between a sink and its monitor");
goto fail;
}
+ source_ss = source_master->sample_spec;
+ source_ss.rate = DEFAULT_RATE;
+ source_ss.channels = DEFAULT_CHANNELS;
+ pa_channel_map_init_auto(&source_map, source_ss.channels, PA_CHANNEL_MAP_DEFAULT);
+
sink_ss = sink_master->sample_spec;
sink_map = sink_master->channel_map;
u->core = m->core;
u->module = m;
m->userdata = u;
+ u->dead = false;
- u->ec = pa_xnew0(pa_echo_canceller, 1);
- if (!u->ec) {
- pa_log("Failed to alloc echo canceller");
+ u->use_volume_sharing = true;
+ if (pa_modargs_get_value_boolean(ma, "use_volume_sharing", &u->use_volume_sharing) < 0) {
+ pa_log("use_volume_sharing= expects a boolean argument");
goto fail;
}
- if ((ec_method = get_ec_method_from_string(pa_modargs_get_value(ma, "aec_method", DEFAULT_ECHO_CANCELLER))) < 0) {
- pa_log("Invalid echo canceller implementation");
+ temp = DEFAULT_ADJUST_TIME_USEC / PA_USEC_PER_SEC;
+ if (pa_modargs_get_value_u32(ma, "adjust_time", &temp) < 0) {
+ pa_log("Failed to parse adjust_time value");
goto fail;
}
- u->ec->init = ec_table[ec_method].init;
- u->ec->run = ec_table[ec_method].run;
- u->ec->done = ec_table[ec_method].done;
+ if (temp != DEFAULT_ADJUST_TIME_USEC / PA_USEC_PER_SEC)
+ u->adjust_time = temp * PA_USEC_PER_SEC;
+ else
+ u->adjust_time = DEFAULT_ADJUST_TIME_USEC;
- adjust_time_sec = DEFAULT_ADJUST_TIME_USEC / PA_USEC_PER_SEC;
- if (pa_modargs_get_value_u32(ma, "adjust_time", &adjust_time_sec) < 0) {
- pa_log("Failed to parse adjust_time value");
+ temp = DEFAULT_ADJUST_TOLERANCE / PA_USEC_PER_MSEC;
+ if (pa_modargs_get_value_u32(ma, "adjust_threshold", &temp) < 0) {
+ pa_log("Failed to parse adjust_threshold value");
goto fail;
}
- if (adjust_time_sec != DEFAULT_ADJUST_TIME_USEC / PA_USEC_PER_SEC)
- u->adjust_time = adjust_time_sec * PA_USEC_PER_SEC;
+ if (temp != DEFAULT_ADJUST_TOLERANCE / PA_USEC_PER_MSEC)
+ u->adjust_threshold = temp * PA_USEC_PER_MSEC;
else
- u->adjust_time = DEFAULT_ADJUST_TIME_USEC;
+ u->adjust_threshold = DEFAULT_ADJUST_TOLERANCE;
u->save_aec = DEFAULT_SAVE_AEC;
- if (pa_modargs_get_value_u32(ma, "save_aec", &u->save_aec) < 0) {
+ if (pa_modargs_get_value_boolean(ma, "save_aec", &u->save_aec) < 0) {
pa_log("Failed to parse save_aec value");
goto fail;
}
+ u->autoloaded = DEFAULT_AUTOLOADED;
+ if (pa_modargs_get_value_boolean(ma, "autoloaded", &u->autoloaded) < 0) {
+ pa_log("Failed to parse autoloaded value");
+ goto fail;
+ }
+
+ if (init_common(ma, u, &source_ss, &source_map) < 0)
+ goto fail;
+
u->asyncmsgq = pa_asyncmsgq_new(0);
- u->need_realign = TRUE;
- if (u->ec->init) {
- if (!u->ec->init(u->core, u->ec, &source_ss, &source_map, &sink_ss, &sink_map, &u->blocksize, pa_modargs_get_value(ma, "aec_args", NULL))) {
- pa_log("Failed to init AEC engine");
- goto fail;
- }
+ u->need_realign = true;
+
+ source_output_ss = source_ss;
+ source_output_map = source_map;
+
+ if (sink_ss.rate != source_ss.rate) {
+ pa_log_info("Sample rates of play and out stream differ. Adjusting rate of play stream.");
+ sink_ss.rate = source_ss.rate;
}
+ pa_assert(u->ec->init);
+ if (!u->ec->init(u->core, u->ec, &source_output_ss, &source_output_map, &sink_ss, &sink_map, &source_ss, &source_map, &nframes, pa_modargs_get_value(ma, "aec_args", NULL))) {
+ pa_log("Failed to init AEC engine");
+ goto fail;
+ }
+
+ pa_assert(source_output_ss.rate == source_ss.rate);
+ pa_assert(sink_ss.rate == source_ss.rate);
+
+ u->source_output_blocksize = nframes * pa_frame_size(&source_output_ss);
+ u->source_blocksize = nframes * pa_frame_size(&source_ss);
+ u->sink_blocksize = nframes * pa_frame_size(&sink_ss);
+
+ if (u->ec->params.drift_compensation)
+ pa_assert(u->ec->set_drift);
+
/* Create source */
pa_source_new_data_init(&source_data);
source_data.driver = __FILE__;
pa_source_new_data_set_channel_map(&source_data, &source_map);
pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, source_master->name);
pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_CLASS, "filter");
- pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
- pa_proplist_sets(source_data.proplist, "device.echo-cancel.name", source_data.name);
+ if (!u->autoloaded)
+ pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
if (pa_modargs_get_proplist(ma, "source_properties", source_data.proplist, PA_UPDATE_REPLACE) < 0) {
pa_log("Invalid properties");
}
if ((u->source_auto_desc = !pa_proplist_contains(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION))) {
- const char *z;
+ const char *y, *z;
+ y = pa_proplist_gets(sink_master->proplist, PA_PROP_DEVICE_DESCRIPTION);
z = pa_proplist_gets(source_master->proplist, PA_PROP_DEVICE_DESCRIPTION);
- pa_proplist_setf(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Echo-Cancel Source %s on %s", source_data.name, z ? z : source_master->name);
+ pa_proplist_setf(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "%s (echo cancelled with %s)",
+ z ? z : source_master->name, y ? y : sink_master->name);
}
- u->source = pa_source_new(m->core, &source_data,
- PA_SOURCE_HW_MUTE_CTRL|PA_SOURCE_HW_VOLUME_CTRL|PA_SOURCE_DECIBEL_VOLUME|
- (source_master->flags & (PA_SOURCE_LATENCY|PA_SOURCE_DYNAMIC_LATENCY)));
+ u->source = pa_source_new(m->core, &source_data, (source_master->flags & (PA_SOURCE_LATENCY | PA_SOURCE_DYNAMIC_LATENCY))
+ | (u->use_volume_sharing ? PA_SOURCE_SHARE_VOLUME_WITH_MASTER : 0));
pa_source_new_data_done(&source_data);
if (!u->source) {
u->source->parent.process_msg = source_process_msg_cb;
u->source->set_state = source_set_state_cb;
u->source->update_requested_latency = source_update_requested_latency_cb;
- u->source->set_volume = source_set_volume_cb;
- u->source->set_mute = source_set_mute_cb;
- u->source->get_volume = source_get_volume_cb;
- u->source->get_mute = source_get_mute_cb;
+ pa_source_set_set_mute_callback(u->source, source_set_mute_cb);
+ if (!u->use_volume_sharing) {
+ pa_source_set_get_volume_callback(u->source, source_get_volume_cb);
+ pa_source_set_set_volume_callback(u->source, source_set_volume_cb);
+ pa_source_enable_decibel_volume(u->source, true);
+ }
u->source->userdata = u;
pa_source_set_asyncmsgq(u->source, source_master->asyncmsgq);
pa_sink_new_data_set_channel_map(&sink_data, &sink_map);
pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, sink_master->name);
pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_CLASS, "filter");
- pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
- pa_proplist_sets(sink_data.proplist, "device.echo-cancel.name", sink_data.name);
+ if (!u->autoloaded)
+ pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_INTENDED_ROLES, "phone");
if (pa_modargs_get_proplist(ma, "sink_properties", sink_data.proplist, PA_UPDATE_REPLACE) < 0) {
pa_log("Invalid properties");
}
if ((u->sink_auto_desc = !pa_proplist_contains(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION))) {
- const char *z;
+ const char *y, *z;
+ y = pa_proplist_gets(source_master->proplist, PA_PROP_DEVICE_DESCRIPTION);
z = pa_proplist_gets(sink_master->proplist, PA_PROP_DEVICE_DESCRIPTION);
- pa_proplist_setf(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Echo-Cancel Sink %s on %s", sink_data.name, z ? z : sink_master->name);
+ pa_proplist_setf(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "%s (echo cancelled with %s)",
+ z ? z : sink_master->name, y ? y : source_master->name);
}
- u->sink = pa_sink_new(m->core, &sink_data,
- PA_SINK_HW_MUTE_CTRL|PA_SINK_HW_VOLUME_CTRL|PA_SINK_DECIBEL_VOLUME|
- (sink_master->flags & (PA_SINK_LATENCY|PA_SINK_DYNAMIC_LATENCY)));
+ u->sink = pa_sink_new(m->core, &sink_data, (sink_master->flags & (PA_SINK_LATENCY | PA_SINK_DYNAMIC_LATENCY))
+ | (u->use_volume_sharing ? PA_SINK_SHARE_VOLUME_WITH_MASTER : 0));
pa_sink_new_data_done(&sink_data);
if (!u->sink) {
u->sink->set_state = sink_set_state_cb;
u->sink->update_requested_latency = sink_update_requested_latency_cb;
u->sink->request_rewind = sink_request_rewind_cb;
- u->sink->set_volume = sink_set_volume_cb;
- u->sink->set_mute = sink_set_mute_cb;
+ pa_sink_set_set_mute_callback(u->sink, sink_set_mute_cb);
+ if (!u->use_volume_sharing) {
+ pa_sink_set_set_volume_callback(u->sink, sink_set_volume_cb);
+ pa_sink_enable_decibel_volume(u->sink, true);
+ }
u->sink->userdata = u;
pa_sink_set_asyncmsgq(u->sink, sink_master->asyncmsgq);
pa_source_output_new_data_init(&source_output_data);
source_output_data.driver = __FILE__;
source_output_data.module = m;
- source_output_data.source = source_master;
- /* FIXME
- source_output_data.flags = PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND; */
+ pa_source_output_new_data_set_source(&source_output_data, source_master, false);
+ source_output_data.destination_source = u->source;
pa_proplist_sets(source_output_data.proplist, PA_PROP_MEDIA_NAME, "Echo-Cancel Source Stream");
pa_proplist_sets(source_output_data.proplist, PA_PROP_MEDIA_ROLE, "filter");
- pa_source_output_new_data_set_sample_spec(&source_output_data, &source_ss);
- pa_source_output_new_data_set_channel_map(&source_output_data, &source_map);
+ pa_source_output_new_data_set_sample_spec(&source_output_data, &source_output_ss);
+ pa_source_output_new_data_set_channel_map(&source_output_data, &source_output_map);
pa_source_output_new(&u->source_output, m->core, &source_output_data);
pa_source_output_new_data_done(&source_output_data);
u->source_output->moving = source_output_moving_cb;
u->source_output->userdata = u;
+ u->source->output_from_master = u->source_output;
+
/* Create sink input */
pa_sink_input_new_data_init(&sink_input_data);
sink_input_data.driver = __FILE__;
sink_input_data.module = m;
- sink_input_data.sink = sink_master;
+ pa_sink_input_new_data_set_sink(&sink_input_data, sink_master, false);
+ sink_input_data.origin_sink = u->sink;
pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_NAME, "Echo-Cancel Sink Stream");
pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_ROLE, "filter");
pa_sink_input_new_data_set_sample_spec(&sink_input_data, &sink_ss);
u->sink_input->state_change = sink_input_state_change_cb;
u->sink_input->may_move_to = sink_input_may_move_to_cb;
u->sink_input->moving = sink_input_moving_cb;
- u->sink_input->volume_changed = sink_input_volume_changed_cb;
+ if (!u->use_volume_sharing)
+ u->sink_input->volume_changed = sink_input_volume_changed_cb;
u->sink_input->mute_changed = sink_input_mute_changed_cb;
u->sink_input->userdata = u;
+ u->sink->input_to_master = u->sink_input;
+
pa_sink_input_get_silence(u->sink_input, &silence);
- u->source_memblockq = pa_memblockq_new(0, MEMBLOCKQ_MAXLENGTH, 0,
- pa_frame_size(&source_ss), 1, 1, 0, &silence);
- u->sink_memblockq = pa_memblockq_new(0, MEMBLOCKQ_MAXLENGTH, 0,
- pa_frame_size(&sink_ss), 1, 1, 0, &silence);
+ u->source_memblockq = pa_memblockq_new("module-echo-cancel source_memblockq", 0, MEMBLOCKQ_MAXLENGTH, 0,
+ &source_output_ss, 1, 1, 0, &silence);
+ u->sink_memblockq = pa_memblockq_new("module-echo-cancel sink_memblockq", 0, MEMBLOCKQ_MAXLENGTH, 0,
+ &sink_ss, 0, 1, 0, &silence);
pa_memblock_unref(silence.memblock);
goto fail;
}
- /* our source and sink are not suspended when we create them */
- u->active_mask = 3;
-
- if (u->adjust_time > 0)
+ if (u->adjust_time > 0 && !u->ec->params.drift_compensation)
u->time_event = pa_core_rttime_new(m->core, pa_rtclock_now() + u->adjust_time, time_callback, u);
+ else if (u->ec->params.drift_compensation) {
+ pa_log_info("Canceller does drift compensation -- built-in compensation will be disabled");
+ u->adjust_time = 0;
+ /* Perform resync just once to give the canceller a leg up */
+ pa_atomic_store(&u->request_resync, 1);
+ }
if (u->save_aec) {
pa_log("Creating AEC files in /tmp");
u->canceled_file = fopen("/tmp/aec_out.sw", "wb");
if (u->canceled_file == NULL)
perror ("fopen failed");
+ if (u->ec->params.drift_compensation) {
+ u->drift_file = fopen("/tmp/aec_drift.txt", "w");
+ if (u->drift_file == NULL)
+ perror ("fopen failed");
+ }
}
+ u->ec->msg = pa_msgobject_new(pa_echo_canceller_msg);
+ u->ec->msg->parent.process_msg = canceller_process_msg_cb;
+ u->ec->msg->userdata = u;
+
+ u->thread_info.current_volume = u->source->reference_volume;
+
pa_sink_put(u->sink);
pa_source_put(u->source);
pa_sink_input_put(u->sink_input);
pa_source_output_put(u->source_output);
-
pa_modargs_free(ma);
return 0;
- fail:
+fail:
if (ma)
pa_modargs_free(ma);
return -1;
}
+/* Called from main context. */
int pa__get_n_used(pa_module *m) {
struct userdata *u;
pa_assert(m);
pa_assert_se(u = m->userdata);
- return pa_sink_linked_by(u->sink) + pa_source_linked_by(u->source);
+ return pa_sink_linked_by(u->sink) + pa_source_linked_by(u->source);
}
+/* Called from main context. */
void pa__done(pa_module*m) {
struct userdata *u;
if (!(u = m->userdata))
return;
+ u->dead = true;
+
/* See comments in source_output_kill_cb() above regarding
* destruction order! */
if (u->asyncmsgq)
pa_asyncmsgq_unref(u->asyncmsgq);
+ if (u->save_aec) {
+ if (u->played_file)
+ fclose(u->played_file);
+ if (u->captured_file)
+ fclose(u->captured_file);
+ if (u->canceled_file)
+ fclose(u->canceled_file);
+ if (u->drift_file)
+ fclose(u->drift_file);
+ }
+
pa_xfree(u);
}
+
+#ifdef ECHO_CANCEL_TEST
+/*
+ * Stand-alone test program for running in the canceller on pre-recorded files.
+ */
+int main(int argc, char* argv[]) {
+ struct userdata u;
+ pa_sample_spec source_output_ss, source_ss, sink_ss;
+ pa_channel_map source_output_map, source_map, sink_map;
+ pa_modargs *ma = NULL;
+ uint8_t *rdata = NULL, *pdata = NULL, *cdata = NULL;
+ int unused PA_GCC_UNUSED;
+ int ret = 0, i;
+ char c;
+ float drift;
+ uint32_t nframes;
+
+ if (!getenv("MAKE_CHECK"))
+ pa_log_set_level(PA_LOG_DEBUG);
+
+ pa_memzero(&u, sizeof(u));
+
+ if (argc < 4 || argc > 7) {
+ goto usage;
+ }
+
+ u.captured_file = fopen(argv[2], "rb");
+ if (u.captured_file == NULL) {
+ perror ("Could not open capture file");
+ goto fail;
+ }
+ u.played_file = fopen(argv[1], "rb");
+ if (u.played_file == NULL) {
+ perror ("Could not open play file");
+ goto fail;
+ }
+ u.canceled_file = fopen(argv[3], "wb");
+ if (u.canceled_file == NULL) {
+ perror ("Could not open canceled file");
+ goto fail;
+ }
+
+ u.core = pa_xnew0(pa_core, 1);
+ u.core->cpu_info.cpu_type = PA_CPU_X86;
+ u.core->cpu_info.flags.x86 |= PA_CPU_X86_SSE;
+
+ if (!(ma = pa_modargs_new(argc > 4 ? argv[4] : NULL, valid_modargs))) {
+ pa_log("Failed to parse module arguments.");
+ goto fail;
+ }
+
+ source_ss.format = PA_SAMPLE_S16LE;
+ source_ss.rate = DEFAULT_RATE;
+ source_ss.channels = DEFAULT_CHANNELS;
+ pa_channel_map_init_auto(&source_map, source_ss.channels, PA_CHANNEL_MAP_DEFAULT);
+
+ sink_ss.format = PA_SAMPLE_S16LE;
+ sink_ss.rate = DEFAULT_RATE;
+ sink_ss.channels = DEFAULT_CHANNELS;
+ pa_channel_map_init_auto(&sink_map, sink_ss.channels, PA_CHANNEL_MAP_DEFAULT);
+
+ if (init_common(ma, &u, &source_ss, &source_map) < 0)
+ goto fail;
+
+ source_output_ss = source_ss;
+ source_output_map = source_map;
+
+ if (!u.ec->init(u.core, u.ec, &source_output_ss, &source_output_map, &sink_ss, &sink_map, &source_ss, &source_map, &nframes,
+ pa_modargs_get_value(ma, "aec_args", NULL))) {
+ pa_log("Failed to init AEC engine");
+ goto fail;
+ }
+ u.source_output_blocksize = nframes * pa_frame_size(&source_output_ss);
+ u.source_blocksize = nframes * pa_frame_size(&source_ss);
+ u.sink_blocksize = nframes * pa_frame_size(&sink_ss);
+
+ if (u.ec->params.drift_compensation) {
+ if (argc < 6) {
+ pa_log("Drift compensation enabled but drift file not specified");
+ goto fail;
+ }
+
+ u.drift_file = fopen(argv[5], "rt");
+
+ if (u.drift_file == NULL) {
+ perror ("Could not open drift file");
+ goto fail;
+ }
+ }
+
+ rdata = pa_xmalloc(u.source_output_blocksize);
+ pdata = pa_xmalloc(u.sink_blocksize);
+ cdata = pa_xmalloc(u.source_blocksize);
+
+ if (!u.ec->params.drift_compensation) {
+ while (fread(rdata, u.source_output_blocksize, 1, u.captured_file) > 0) {
+ if (fread(pdata, u.sink_blocksize, 1, u.played_file) == 0) {
+ perror("Played file ended before captured file");
+ goto fail;
+ }
+
+ u.ec->run(u.ec, rdata, pdata, cdata);
+
+ unused = fwrite(cdata, u.source_blocksize, 1, u.canceled_file);
+ }
+ } else {
+ while (fscanf(u.drift_file, "%c", &c) > 0) {
+ switch (c) {
+ case 'd':
+ if (!fscanf(u.drift_file, "%a", &drift)) {
+ perror("Drift file incomplete");
+ goto fail;
+ }
+
+ u.ec->set_drift(u.ec, drift);
+
+ break;
+
+ case 'c':
+ if (!fscanf(u.drift_file, "%d", &i)) {
+ perror("Drift file incomplete");
+ goto fail;
+ }
+
+ if (fread(rdata, i, 1, u.captured_file) <= 0) {
+ perror("Captured file ended prematurely");
+ goto fail;
+ }
+
+ u.ec->record(u.ec, rdata, cdata);
+
+ unused = fwrite(cdata, i, 1, u.canceled_file);
+
+ break;
+
+ case 'p':
+ if (!fscanf(u.drift_file, "%d", &i)) {
+ perror("Drift file incomplete");
+ goto fail;
+ }
+
+ if (fread(pdata, i, 1, u.played_file) <= 0) {
+ perror("Played file ended prematurely");
+ goto fail;
+ }
+
+ u.ec->play(u.ec, pdata);
+
+ break;
+ }
+ }
+
+ if (fread(rdata, i, 1, u.captured_file) > 0)
+ pa_log("All capture data was not consumed");
+ if (fread(pdata, i, 1, u.played_file) > 0)
+ pa_log("All playback data was not consumed");
+ }
+
+ u.ec->done(u.ec);
+
+out:
+ if (u.captured_file)
+ fclose(u.captured_file);
+ if (u.played_file)
+ fclose(u.played_file);
+ if (u.canceled_file)
+ fclose(u.canceled_file);
+ if (u.drift_file)
+ fclose(u.drift_file);
+
+ pa_xfree(rdata);
+ pa_xfree(pdata);
+ pa_xfree(cdata);
+
+ pa_xfree(u.ec);
+ pa_xfree(u.core);
+
+ if (ma)
+ pa_modargs_free(ma);
+
+ return ret;
+
+usage:
+ pa_log("Usage: %s play_file rec_file out_file [module args] [drift_file]", argv[0]);
+
+fail:
+ ret = -1;
+ goto out;
+}
+#endif /* ECHO_CANCEL_TEST */