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fix resampling issues (add to 1.0 branch) 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11090 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2009-01-08 01:42:09 +00:00
parent c84bae29aa
commit e6302e9407
2 changed files with 20 additions and 8 deletions
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2
src/mod/formats/mod_sndfile/mod_sndfile.c
View File

@ -237,7 +237,7 @@ static switch_status_t sndfile_file_read(switch_file_handle_t *handle, void *dat
handle->sample_count += *len;
return SWITCH_STATUS_SUCCESS;
return *len ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
}
static switch_status_t sndfile_file_write(switch_file_handle_t *handle, void *data, size_t *len)

22
src/switch_core_file.c
View File

@ -125,21 +125,27 @@ SWITCH_DECLARE(switch_status_t) switch_core_perform_file_open(const char *file,
SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh, void *data, switch_size_t *len)
{
switch_status_t status;
switch_size_t orig_len = *len;
switch_size_t want, got, orig_len = *len;
switch_assert(fh != NULL);
switch_assert(fh->file_interface != NULL);
if (fh->buffer && switch_buffer_inuse(fh->buffer)) {
if (fh->buffer && switch_buffer_inuse(fh->buffer) >= *len * 2) {
*len = switch_buffer_read(fh->buffer, data, orig_len * 2) / 2;
return SWITCH_STATUS_SUCCESS;
}
if ((status = fh->file_interface->file_read(fh, data, len)) != SWITCH_STATUS_SUCCESS) {
want = *len;
more:
if ((status = fh->file_interface->file_read(fh, data, len)) != SWITCH_STATUS_SUCCESS || !*len) {
*len = 0;
goto done;
}
got = *len;
if (!switch_test_flag(fh, SWITCH_FILE_NATIVE) && fh->native_rate != fh->samplerate) {
if (!fh->resampler) {
if (switch_resample_create(&fh->resampler,
@ -153,9 +159,9 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
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) {
if (fh->resampler->to_len < want || fh->resampler->to_len > orig_len) {
if (!fh->buffer) {
switch_buffer_create_dynamic(&fh->buffer, fh->resampler->to_len * 2, fh->resampler->to_len * 4, fh->resampler->to_len * 8);
switch_buffer_create_dynamic(&fh->buffer, fh->resampler->to_len * 4, fh->resampler->to_len * 8, fh->resampler->to_len * 32);
switch_assert(fh->buffer);
}
if (!fh->dbuf) {
@ -166,12 +172,18 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
switch_float_to_short(fh->resampler->to, (int16_t *) fh->dbuf, fh->resampler->to_len);
switch_buffer_write(fh->buffer, fh->dbuf, fh->resampler->to_len * 2);
if (switch_buffer_inuse(fh->buffer) < want * 2) {
*len = want - fh->resampler->to_len;
goto more;
}
*len = switch_buffer_read(fh->buffer, data, orig_len * 2) / 2;
} else {
switch_float_to_short(fh->resampler->to, data, fh->resampler->to_len);
*len = fh->resampler->to_len;
}
}
done: