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echo-cancel: Make blocksize a module-wide parameter

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Since all algorithms will need to specify a block size (the amount of
data to be processed together), we make this a common parameter and have
the implementation set it at initialisation time.
This commit is contained in:
Arun Raghavan 2010-09-07 14:55:38 +05:30
parent 33a3bc34c8
commit 948a3d042c
4 changed files with 25 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

11
src/modules/echo-cancel/adrian.c
View file

@ -54,7 +54,7 @@ static void pa_adrian_ec_fixate_spec(pa_sample_spec *source_ss, pa_channel_map *
pa_bool_t pa_adrian_ec_init(pa_echo_canceller *ec,
pa_sample_spec *source_ss, pa_channel_map *source_map,
pa_sample_spec *sink_ss, pa_channel_map *sink_map,
const char *args)
uint32_t *blocksize, const char *args)
{
int framelen, rate;
uint32_t frame_size_ms;
@ -76,9 +76,9 @@ pa_bool_t pa_adrian_ec_init(pa_echo_canceller *ec,
rate = source_ss->rate;
framelen = (rate * frame_size_ms) / 1000;
ec->params.priv.adrian.blocksize = framelen * pa_frame_size (source_ss);
*blocksize = ec->params.priv.adrian.blocksize = framelen * pa_frame_size (source_ss);
pa_log_debug ("Using framelen %d, blocksize %lld, channels %d, rate %d", framelen, (long long) ec->params.priv.adrian.blocksize, source_ss->channels, source_ss->rate);
pa_log_debug ("Using framelen %d, blocksize %u, channels %d, rate %d", framelen, ec->params.priv.adrian.blocksize, source_ss->channels, source_ss->rate);
ec->params.priv.adrian.aec = AEC_init(rate);
if (!ec->params.priv.adrian.aec)
@ -114,8 +114,3 @@ void pa_adrian_ec_done(pa_echo_canceller *ec)
pa_xfree(ec->params.priv.adrian.aec);
ec->params.priv.adrian.aec = NULL;
}
uint32_t pa_adrian_ec_get_block_size(pa_echo_canceller *ec)
{
return ec->params.priv.adrian.blocksize;
}

9
src/modules/echo-cancel/echo-cancel.h
View file

@ -37,7 +37,6 @@ typedef struct pa_echo_canceller_params pa_echo_canceller_params;
struct pa_echo_canceller_params {
union {
struct {
uint32_t blocksize;
SpeexEchoState *state;
} speex;
struct {
@ -56,10 +55,10 @@ struct pa_echo_canceller {
pa_channel_map *source_map,
pa_sample_spec *sink_ss,
pa_channel_map *sink_map,
uint32_t *blocksize,
const char *args);
void (*run) (pa_echo_canceller *ec, uint8_t *rec, uint8_t *play, uint8_t *out);
void (*done) (pa_echo_canceller *ec);
uint32_t (*get_block_size) (pa_echo_canceller *ec);
pa_echo_canceller_params params;
};
@ -68,16 +67,14 @@ struct pa_echo_canceller {
pa_bool_t pa_speex_ec_init(pa_echo_canceller *ec,
pa_sample_spec *source_ss, pa_channel_map *source_map,
pa_sample_spec *sink_ss, pa_channel_map *sink_map,
const char *args);
uint32_t *blocksize, const char *args);
void pa_speex_ec_run(pa_echo_canceller *ec, uint8_t *rec, uint8_t *play, uint8_t *out);
void pa_speex_ec_done(pa_echo_canceller *ec);
uint32_t pa_speex_ec_get_block_size(pa_echo_canceller *ec);
/* Adrian Andre's echo canceller */
pa_bool_t pa_adrian_ec_init(pa_echo_canceller *ec,
pa_sample_spec *source_ss, pa_channel_map *source_map,
pa_sample_spec *sink_ss, pa_channel_map *sink_map,
const char *args);
uint32_t *blocksize, const char *args);
void pa_adrian_ec_run(pa_echo_canceller *ec, uint8_t *rec, uint8_t *play, uint8_t *out);
void pa_adrian_ec_done(pa_echo_canceller *ec);
uint32_t pa_adrian_ec_get_block_size(pa_echo_canceller *ec);

37
src/modules/echo-cancel/module-echo-cancel.c
View file

@ -95,14 +95,12 @@ static const pa_echo_canceller ec_table[] = {
.init = pa_speex_ec_init,
.run = pa_speex_ec_run,
.done = pa_speex_ec_done,
.get_block_size = pa_speex_ec_get_block_size,
},
{
/* Adrian Andre's NLMS implementation */
.init = pa_adrian_ec_init,
.run = pa_adrian_ec_run,
.done = pa_adrian_ec_done,
.get_block_size = pa_adrian_ec_get_block_size,
},
};
@ -161,6 +159,7 @@ struct userdata {
uint32_t save_aec;
pa_echo_canceller *ec;
uint32_t blocksize;
pa_bool_t need_realign;
@ -345,7 +344,7 @@ static int source_process_msg_cb(pa_msgobject *o, int code, void *data, int64_t
/* 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->ec->get_block_size(u->ec), &u->source_output->source->sample_spec);
pa_bytes_to_usec(u->blocksize, &u->source_output->source->sample_spec);
return 0;
@ -632,7 +631,6 @@ static void do_resync(struct userdata *u) {
static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
struct userdata *u;
size_t rlen, plen;
uint32_t blocksize;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
@ -658,20 +656,18 @@ static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk)
rlen = pa_memblockq_get_length(u->source_memblockq);
plen = pa_memblockq_get_length(u->sink_memblockq);
blocksize = u->ec->get_block_size(u->ec);
while (rlen >= blocksize) {
while (rlen >= u->blocksize) {
pa_memchunk rchunk, pchunk;
/* take fixed block from recorded samples */
pa_memblockq_peek_fixed_size(u->source_memblockq, blocksize, &rchunk);
pa_memblockq_peek_fixed_size(u->source_memblockq, u->blocksize, &rchunk);
if (plen > blocksize) {
if (plen > u->blocksize) {
uint8_t *rdata, *pdata, *cdata;
pa_memchunk cchunk;
/* take fixed block from played samples */
pa_memblockq_peek_fixed_size(u->sink_memblockq, blocksize, &pchunk);
pa_memblockq_peek_fixed_size(u->sink_memblockq, u->blocksize, &pchunk);
rdata = pa_memblock_acquire(rchunk.memblock);
rdata += rchunk.index;
@ -679,7 +675,7 @@ static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk)
pdata += pchunk.index;
cchunk.index = 0;
cchunk.length = blocksize;
cchunk.length = u->blocksize;
cchunk.memblock = pa_memblock_new(u->source->core->mempool, cchunk.length);
cdata = pa_memblock_acquire(cchunk.memblock);
@ -688,11 +684,11 @@ static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk)
if (u->save_aec) {
if (u->captured_file)
fwrite(rdata, 1, blocksize, u->captured_file);
fwrite(rdata, 1, u->blocksize, u->captured_file);
if (u->played_file)
fwrite(pdata, 1, blocksize, u->played_file);
fwrite(pdata, 1, u->blocksize, u->played_file);
if (u->canceled_file)
fwrite(cdata, 1, blocksize, u->canceled_file);
fwrite(cdata, 1, u->blocksize, u->canceled_file);
pa_log_debug("AEC frame saved.");
}
@ -701,7 +697,7 @@ static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk)
pa_memblock_release(rchunk.memblock);
/* drop consumed sink samples */
pa_memblockq_drop(u->sink_memblockq, blocksize);
pa_memblockq_drop(u->sink_memblockq, u->blocksize);
pa_memblock_unref(pchunk.memblock);
pa_memblock_unref(rchunk.memblock);
@ -709,11 +705,11 @@ static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk)
* source */
rchunk = cchunk;
plen -= blocksize;
plen -= u->blocksize;
} else {
/* not enough played samples to perform echo cancelation,
* drop what we have */
pa_memblockq_drop(u->sink_memblockq, blocksize - plen);
pa_memblockq_drop(u->sink_memblockq, u->blocksize - plen);
plen = 0;
}
@ -721,9 +717,9 @@ static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk)
pa_source_post(u->source, &rchunk);
pa_memblock_unref(rchunk.memblock);
pa_memblockq_drop(u->source_memblockq, blocksize);
pa_memblockq_drop(u->source_memblockq, u->blocksize);
rlen -= blocksize;
rlen -= u->blocksize;
}
}
@ -1354,7 +1350,6 @@ int pa__init(pa_module*m) {
u->ec->init = ec_table[ec_method].init;
u->ec->run = ec_table[ec_method].run;
u->ec->done = ec_table[ec_method].done;
u->ec->get_block_size = ec_table[ec_method].get_block_size;
adjust_time_sec = DEFAULT_ADJUST_TIME_USEC / PA_USEC_PER_SEC;
if (pa_modargs_get_value_u32(ma, "adjust_time", &adjust_time_sec) < 0) {
@ -1376,7 +1371,7 @@ int pa__init(pa_module*m) {
u->asyncmsgq = pa_asyncmsgq_new(0);
u->need_realign = TRUE;
if (u->ec->init) {
if (!u->ec->init(u->ec, &source_ss, &source_map, &sink_ss, &sink_map, pa_modargs_get_value(ma, "aec_args", NULL))) {
if (!u->ec->init(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;
}

11
src/modules/echo-cancel/speex.c
View file

@ -51,7 +51,7 @@ static void pa_speex_ec_fixate_spec(pa_sample_spec *source_ss, pa_channel_map *s
pa_bool_t pa_speex_ec_init(pa_echo_canceller *ec,
pa_sample_spec *source_ss, pa_channel_map *source_map,
pa_sample_spec *sink_ss, pa_channel_map *sink_map,
const char *args)
uint32_t *blocksize, const char *args)
{
int framelen, y, rate;
uint32_t frame_size_ms, filter_size_ms;
@ -84,9 +84,9 @@ pa_bool_t pa_speex_ec_init(pa_echo_canceller *ec,
y >>= 1;
framelen = y;
ec->params.priv.speex.blocksize = framelen * pa_frame_size (source_ss);
*blocksize = framelen * pa_frame_size (source_ss);
pa_log_debug ("Using framelen %d, blocksize %lld, channels %d, rate %d", framelen, (long long) ec->params.priv.speex.blocksize, source_ss->channels, source_ss->rate);
pa_log_debug ("Using framelen %d, blocksize %u, channels %d, rate %d", framelen, *blocksize, source_ss->channels, source_ss->rate);
ec->params.priv.speex.state = speex_echo_state_init_mc (framelen, (rate * filter_size_ms) / 1000, source_ss->channels, source_ss->channels);
@ -114,8 +114,3 @@ void pa_speex_ec_done(pa_echo_canceller *ec)
speex_echo_state_destroy (ec->params.priv.speex.state);
ec->params.priv.speex.state = NULL;
}
uint32_t pa_speex_ec_get_block_size(pa_echo_canceller *ec)
{
return ec->params.priv.speex.blocksize;
}