set the variable RECORD_STEREO=true to make record_session create stereo files with each leg in it's own channel, note you cannot play these files with freewitch with playback because we don't support stereo files

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@5772 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_types.h

@@ -786,7 +786,8 @@ typedef enum {
 	SMBF_READ_STREAM = (1 << 0),
 	SMBF_WRITE_STREAM = (1 << 1),
 	SMBF_WRITE_REPLACE = (1 << 2),
-	SMBF_READ_REPLACE = (1 << 3)
+	SMBF_READ_REPLACE = (1 << 3),
+	SMBF_STEREO = (1 << 4)
 } switch_media_bug_flag_t;
 
 /*!

src/switch_core_media_bug.c

@@ -121,13 +121,29 @@ SWITCH_DECLARE(switch_status_t) switch_core_media_bug_read(switch_media_bug_t *b
 	bytes = (datalen > frame->datalen) ? datalen : frame->datalen;
 	
 	if (bytes) {
+		int16_t tmp[960], *tp = tmp;
+		
 		dp = (int16_t *) data;
 		fp = (int16_t *) frame->data;
-
 		rlen = frame->datalen / 2;
 		wlen = datalen / 2;
 		blen = bytes / 2;
 
+		if (switch_test_flag(bug, SMBF_STEREO)) {
+			for (x = 0; x < blen; x++) {
+				if (x < rlen) {
+					*(tp++) = *(fp + x);
+				} else {
+					*(tp++) = 0;
+				}
+				if (x < wlen) {
+					*(tp++) = *(dp + x);
+				} else {
+					*(tp++) = 0;
+				}
+			}
+			memcpy(frame->data, tmp, bytes * 2);
+		} else {
 			for (x = 0; x < blen; x++) {
 				int32_t z = 0;
 
@@ -140,6 +156,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_media_bug_read(switch_media_bug_t *b
 				switch_normalize_to_16bit(z);
 				*(fp + x) = (int16_t) z;
 			}
+		}
 
 		frame->datalen = bytes;
 		frame->samples = bytes / sizeof(int16_t);

src/switch_ivr_async.c

@@ -302,7 +302,8 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_record_session(switch_core_session_t
 	switch_media_bug_t *bug;
 	switch_status_t status;
 	time_t to = 0;
-
+	switch_media_bug_flag_t flags = SMBF_READ_STREAM | SMBF_WRITE_STREAM;
+	int channels;
 	channel = switch_core_session_get_channel(session);
 	assert(channel != NULL);
 
@@ -317,19 +318,26 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_record_session(switch_core_session_t
 		}
 	}
 
-
 	read_codec = switch_core_session_get_read_codec(session);
 	assert(read_codec != NULL);
 
-	fh->channels = read_codec->implementation->number_of_channels;
+	channels = read_codec->implementation->number_of_channels;
+
+	if ((p = switch_channel_get_variable(channel, "RECORD_STEREO")) && switch_true(p)) {
+		flags |= SMBF_STEREO;
+		channels = 2;
+	}
+	
+	fh->channels = channels;
 	fh->samplerate = read_codec->implementation->samples_per_second;
 
 
 	if (switch_core_file_open(fh,
 							  file,
-							  read_codec->implementation->number_of_channels,
+							  channels,
 							  read_codec->implementation->samples_per_second,
 							  SWITCH_FILE_FLAG_WRITE | SWITCH_FILE_DATA_SHORT, switch_core_session_get_pool(session)) != SWITCH_STATUS_SUCCESS) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error opening %s\n", file);
 		switch_channel_hangup(channel, SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER);
 		switch_core_session_reset(session);
 		return SWITCH_STATUS_GENERR;
@@ -377,7 +385,8 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_record_session(switch_core_session_t
 		to = time(NULL) + limit;
 	}
 	
-	if ((status = switch_core_media_bug_add(session, record_callback, fh, to, SMBF_BOTH, &bug)) != SWITCH_STATUS_SUCCESS) {
+	if ((status = switch_core_media_bug_add(session, record_callback, fh, to, flags, &bug)) != SWITCH_STATUS_SUCCESS) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error adding media bug for file %s\n", file);
 		switch_core_file_close(fh);
 		return status;
 	}