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small tweak to resampler 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7435 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Brian West 2008-01-30 15:45:52 +00:00
parent ab519911c4
commit 89b9e1fbf1
4 changed files with 19 additions and 13 deletions
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6
src/mod/applications/mod_conference/mod_conference.c
View File

@ -774,7 +774,7 @@ static void *SWITCH_THREAD_FUNC conference_thread_run(switch_thread_t * thread,
/* If the caller is not at the right sample rate resample him to suit and buffer accordingly */
if (imember->mux_resampler) {
int16_t *bptr = (int16_t *) imember->frame;
int16_t out[1024];
int16_t out[SWITCH_RECOMMENDED_BUFFER_SIZE];
int len = (int) imember->read;
imember->mux_resampler->from_len = switch_short_to_float(bptr, imember->mux_resampler->from, (int) len / 2);
@ -784,6 +784,10 @@ static void *SWITCH_THREAD_FUNC conference_thread_run(switch_thread_t * thread,
switch_float_to_short(imember->mux_resampler->to, out, len);
len = imember->mux_resampler->to_len * 2;
if (len > SWITCH_RECOMMENDED_BUFFER_SIZE) {
len = SWITCH_RECOMMENDED_BUFFER_SIZE;
}
switch_buffer_write(imember->resample_buffer, out, len);
if (switch_buffer_inuse(imember->resample_buffer) >= bytes) {
imember->read = (uint32_t) switch_buffer_read(imember->resample_buffer, imember->frame, bytes);

8
src/switch_core_file.c
View File

@ -143,9 +143,9 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
if (!fh->resampler) {
if (switch_resample_create(&fh->resampler,
fh->native_rate,
orig_len * 10,
orig_len,
fh->samplerate,
(uint32_t)orig_len * 10,
(uint32_t)orig_len,
fh->memory_pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Unable to create resampler!\n");
return SWITCH_STATUS_GENERR;
@ -197,9 +197,9 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_write(switch_file_handle_t *fh,
if (!fh->resampler) {
if (switch_resample_create(&fh->resampler,
fh->native_rate,
orig_len * 10,
orig_len,
fh->samplerate,
(uint32_t)orig_len * 10,
(uint32_t)orig_len,
fh->memory_pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Unable to create resampler!\n");
return SWITCH_STATUS_GENERR;

12
src/switch_core_io.c
View File

@ -192,9 +192,9 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_read_frame(switch_core_sessi
switch_mutex_lock(session->resample_mutex);
status = switch_resample_create(&session->read_resampler,
read_frame->codec->implementation->actual_samples_per_second,
read_frame->codec->implementation->bytes_per_frame * 20,
read_frame->codec->implementation->bytes_per_frame,
session->read_codec->implementation->actual_samples_per_second,
session->read_codec->implementation->bytes_per_frame * 20, session->pool);
session->read_codec->implementation->bytes_per_frame, session->pool);
switch_mutex_unlock(session->resample_mutex);
if (status != SWITCH_STATUS_SUCCESS) {
@ -520,9 +520,9 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_write_frame(switch_core_sess
switch_mutex_lock(session->resample_mutex);
status = switch_resample_create(&session->write_resampler,
frame->codec->implementation->actual_samples_per_second,
frame->codec->implementation->bytes_per_frame * 20,
frame->codec->implementation->bytes_per_frame,
session->write_codec->implementation->actual_samples_per_second,
session->write_codec->implementation->bytes_per_frame * 20, session->pool);
session->write_codec->implementation->bytes_per_frame, session->pool);
switch_mutex_unlock(session->resample_mutex);
if (status != SWITCH_STATUS_SUCCESS) {
goto done;
@ -753,9 +753,9 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_write_frame(switch_core_sess
switch_mutex_lock(session->resample_mutex);
status = switch_resample_create(&session->read_resampler,
frame->codec->implementation->actual_samples_per_second,
frame->codec->implementation->bytes_per_frame * 20,
frame->codec->implementation->bytes_per_frame,
session->write_codec->implementation->actual_samples_per_second,
session->write_codec->implementation->bytes_per_frame * 20, session->pool);
session->write_codec->implementation->bytes_per_frame, session->pool);
switch_mutex_unlock(session->resample_mutex);
if (status != SWITCH_STATUS_SUCCESS) {

6
src/switch_resample.c
View File

@ -51,6 +51,8 @@
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif
#define resample_buffer(a, b, c) a > b ? ((a / 1000) / 2) * c : ((b / 1000) / 2) * c
SWITCH_DECLARE(switch_status_t) switch_resample_create(switch_audio_resampler_t **new_resampler,
int from_rate, switch_size_t from_size, int to_rate, uint32_t to_size, switch_memory_pool_t *pool)
{
@ -74,9 +76,9 @@ SWITCH_DECLARE(switch_status_t) switch_resample_create(switch_audio_resampler_t
resampler->resampler = resample_open(QUALITY, resampler->factor, resampler->factor);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Activate Resampler %d->%d %f\n", resampler->from_rate, resampler->to_rate,
resampler->factor);
resampler->from_size = from_size;
resampler->from_size = resample_buffer(to_rate, from_rate, (uint32_t)from_size);
resampler->from = (float *) switch_core_alloc(pool, resampler->from_size);
resampler->to_size = to_size;
resampler->to_size = resample_buffer(to_rate, from_rate, (uint32_t)to_size); ;
resampler->to = (float *) switch_core_alloc(pool, resampler->to_size);
*new_resampler = resampler;