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replace the resampler code with the awesome code from speex

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@12003 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale committed 2009-02-13 23:35:17 +00:00
1 parent 86abd55aa1
commit c31a7f2563
5 files changed
+82 -118
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src/switch_core_file.c
+10 -15
View File
@@ -214,16 +214,14 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
if (!switch_test_flag(fh, SWITCH_FILE_NATIVE) && fh->native_rate != fh->samplerate) {
if (!fh->resampler) {
if (switch_resample_create(&fh->resampler,
fh->native_rate, orig_len, fh->samplerate, (uint32_t) orig_len, fh->memory_pool) != SWITCH_STATUS_SUCCESS) {
fh->native_rate, fh->samplerate, (uint32_t) orig_len, SWITCH_RESAMPLE_QUALITY) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Unable to create resampler!\n");
return SWITCH_STATUS_GENERR;
}
}
fh->resampler->from_len = switch_short_to_float(data, fh->resampler->from, (int) *len);
fh->resampler->to_len =
switch_resample_process(fh->resampler, fh->resampler->from, fh->resampler->from_len, fh->resampler->to, fh->resampler->to_size, 0);
switch_resample_process(fh->resampler, data, *len);
if (fh->resampler->to_len < want || fh->resampler->to_len > orig_len) {
if (!fh->buffer) {
int factor = fh->resampler->to_len * fh->samplerate / 1000;
@@ -235,8 +233,8 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
fh->dbuf = switch_core_alloc(fh->memory_pool, fh->dbuflen);
}
switch_assert(fh->resampler->to_len <= fh->dbuflen);
switch_float_to_short(fh->resampler->to, (int16_t *) fh->dbuf, fh->resampler->to_len);
memcpy((int16_t *) fh->dbuf, fh->resampler->to, fh->resampler->to_len * 2);
switch_buffer_write(fh->buffer, fh->dbuf, fh->resampler->to_len * 2);
if (switch_buffer_inuse(fh->buffer) < want * 2) {
@@ -245,7 +243,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
}
*len = switch_buffer_read(fh->buffer, data, orig_len * 2) / 2;
} else {
switch_float_to_short(fh->resampler->to, data, fh->resampler->to_len);
memcpy(data, fh->resampler->to, fh->resampler->to_len * 2);
*len = fh->resampler->to_len;
}
@@ -274,28 +272,25 @@ 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 * fh->channels,
fh->samplerate,
(uint32_t) orig_len *fh->channels,
fh->memory_pool) != SWITCH_STATUS_SUCCESS) {
SWITCH_RESAMPLE_QUALITY) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Unable to create resampler!\n");
return SWITCH_STATUS_GENERR;
}
}
switch_resample_process(fh->resampler, data, *len * fh->channels);
fh->resampler->from_len = switch_short_to_float(data, fh->resampler->from, (int) *len * fh->channels);
fh->resampler->to_len =
switch_resample_process(fh->resampler, fh->resampler->from, fh->resampler->from_len, fh->resampler->to, fh->resampler->to_size, 0);
if (fh->resampler->to_len > orig_len * fh->channels) {
if (!fh->dbuf) {
fh->dbuflen = fh->resampler->to_len * 2;
fh->dbuf = switch_core_alloc(fh->memory_pool, fh->dbuflen);
}
switch_assert(fh->resampler->to_len <= fh->dbuflen);
switch_float_to_short(fh->resampler->to, (int16_t *) fh->dbuf, fh->resampler->to_len);
memcpy(fh->dbuf, fh->resampler->to, fh->resampler->to_len);
data = fh->dbuf;
} else {
switch_float_to_short(fh->resampler->to, data, fh->resampler->to_len);
memcpy(data, fh->resampler->to, fh->resampler->to_len);
}
*len = fh->resampler->to_len / fh->channels;