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adjust buffering sizes to allow resampling of high defination audio codecs so they can be transcoded to lower and higher levels 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11145 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2009-01-12 19:12:09 +00:00
parent 5edf696110
commit 4997507dfe
1 changed files with 4 additions and 3 deletions
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7
src/switch_core_file.c
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@ -204,11 +204,12 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
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 * 4, fh->resampler->to_len * 8, fh->resampler->to_len * 32);
int factor = fh->resampler->to_len * fh->samplerate / 1000;
switch_buffer_create_dynamic(&fh->buffer, factor, factor, 0);
switch_assert(fh->buffer);
}
if (!fh->dbuf) {
fh->dbuflen = fh->resampler->to_len * 10;
fh->dbuflen = want * 2;
fh->dbuf = switch_core_alloc(fh->memory_pool, fh->dbuflen);
}
switch_assert(fh->resampler->to_len <= fh->dbuflen);
@ -217,7 +218,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
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;
*len = want;
goto more;
}
*len = switch_buffer_read(fh->buffer, data, orig_len * 2) / 2;