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mux multi-channel audio files to mono to support playing stereo sound files

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11226 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale committed 2009-01-15 17:47:21 +00:00
1 parent b47337b660
commit 51aea0ea08
3 files changed
+36 -1
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src/switch_core_file.c
+13 -1
View File
@@ -120,7 +120,11 @@ SWITCH_DECLARE(switch_status_t) switch_core_perform_file_open(const char *file,
if (fh->pre_buffer_datalen) {
//switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Prebuffering %d bytes\n", (int)fh->pre_buffer_datalen);
switch_buffer_create_dynamic(&fh->pre_buffer, fh->pre_buffer_datalen * fh->channels, fh->pre_buffer_datalen * fh->channels / 2, 0);
fh->pre_buffer_data = switch_core_alloc(fh->memory_pool, fh->pre_buffer_datalen);
fh->pre_buffer_data = switch_core_alloc(fh->memory_pool, fh->pre_buffer_datalen * fh->channels);
}
if (fh->channels > 1) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "File has %d channels, muxing to mono will occur.\n", fh->channels);
}
switch_set_flag(fh, SWITCH_FILE_OPEN);
@@ -164,6 +168,9 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
if ((status = fh->file_interface->file_read(fh, fh->pre_buffer_data, &rlen)) != SWITCH_STATUS_SUCCESS || !rlen) {
switch_set_flag(fh, SWITCH_FILE_BUFFER_DONE);
} else {
if (fh->channels > 1) {
switch_mux_channels((int16_t *)fh->pre_buffer_data, rlen, fh->channels);
}
switch_buffer_write(fh->pre_buffer, fh->pre_buffer_data, asis ? rlen : rlen * 2);
}
}
@@ -185,6 +192,11 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
switch_set_flag(fh, SWITCH_FILE_DONE);
goto top;
}
if (fh->channels > 1) {
switch_mux_channels((int16_t *)data, *len, fh->channels);
}
}