Support for MP3 recording for Win32 target. Also added "--rec-file" and "--auto-rec" option in pjsua to record voice conversion. The "--rec-file" option will record to either .WAV or .MP3 depending on the file extension.

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@783 74dad513-b988-da41-8d7b-12977e46ad98

2 files changed, 138 insertions, 0 deletions

diff --git a/pjmedia/include/pjmedia.h b/pjmedia/include/pjmedia.h
index 83fded59..7a4375bf 100644
--- a/pjmedia/include/pjmedia.h
+++ b/pjmedia/include/pjmedia.h
@@ -37,6 +37,7 @@
 #include <pjmedia/jbuf.h>
 #include <pjmedia/master_port.h>
 #include <pjmedia/mem_port.h>
+#include <pjmedia/mp3_port.h>
 #include <pjmedia/null_port.h>
 #include <pjmedia/plc.h>
 #include <pjmedia/port.h>
diff --git a/pjmedia/include/pjmedia/mp3_port.h b/pjmedia/include/pjmedia/mp3_port.h
new file mode 100644
index 00000000..4d980b9c
--- /dev/null
+++ b/pjmedia/include/pjmedia/mp3_port.h
@@ -0,0 +1,137 @@
+/* $Id$ */
+/* 
+ * Copyright (C) 2003-2006 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+
+/*
+ * Contributed by:
+ *  Toni < buldozer at aufbix dot org >
+ */
+
+#ifndef __PJMEDIA_MP3_PORT_H__
+#define __PJMEDIA_MP3_PORT_H__
+
+
+/**
+ * @file mp3_port.h
+ * @brief MP3 writer
+ */
+#include <pjmedia/port.h>
+
+/**
+ * @defgroup PJMEDIA_MP3_FILE_REC MP3 Audio File Writer (Recorder)
+ * @ingroup PJMEDIA_PORT
+ * @brief MP3 Audio File Writer (Recorder)
+ * @{
+ *
+ * This section describes MP3 file writer. Currently it only works on Windows
+ * using BladeEncDLL of the LAME MP3 encoder. <b>Note that the LAME_ENC.DLL 
+ * file must exist in the PATH so that the encoder can work properly.</b>
+ *
+ * The MP3 file writer is created with #pjmedia_mp3_writer_port_create() which
+ * among other things specifies the desired file name and audio properties.
+ * It then takes PCM input when #pjmedia_port_put_frame() is called and encode
+ * the PCM input into MP3 streams before writing it to the .mp3 file.
+ */
+
+
+PJ_BEGIN_DECL
+
+
+/**
+ * This structure contains encoding options that can be specified during
+ * MP3 writer port creation. Application should always zero the structure
+ * before setting some value to make sure that default options will be used.
+ */
+typedef struct pjmedia_mp3_encoder_option
+{
+    /** Specify whether variable bit rate should be used (say Yes!).	    */
+    pj_bool_t	vbr;
+
+    /** Target bitrate, in bps. If zero, bitrate will be  calculated.	    */
+    unsigned	bit_rate;
+
+    /** Encoding quality, 0-9, with 0 is the highest. 			    */
+    unsigned	quality;
+
+} pjmedia_mp3_encoder_option;
+
+
+/**
+ * Create a media port to record PCM media to a MP3 file. After the port
+ * is created, application can call #pjmedia_port_put_frame() to feed the
+ * port with PCM frames. The port then will encode the PCM frame into MP3
+ * stream, and store it to MP3 file specified in the argument.
+ *
+ * When application has finished with writing MP3 file, it must destroy the
+ * media port with #pjmedia_port_destroy() so that the MP3 file can be
+ * closed properly.
+ *
+ * @param pool		    Pool to create memory buffers for this port.
+ * @param filename	    File name.
+ * @param clock_rate	    The sampling rate.
+ * @param channel_count	    Number of channels.
+ * @param samples_per_frame Number of samples per frame.
+ * @param bits_per_sample   Number of bits per sample (eg 16).
+ * @param option	    Optional option to set encoding parameters.
+ * @param p_port	    Pointer to receive the file port instance.
+ *
+ * @return		    PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) 
+pjmedia_mp3_writer_port_create(pj_pool_t *pool,
+			       const char *filename,
+			       unsigned clock_rate,
+			       unsigned channel_count,
+			       unsigned samples_per_frame,
+			       unsigned bits_per_sample,
+			       const pjmedia_mp3_encoder_option *option,
+			       pjmedia_port **p_port );
+
+/**
+ * Register the callback to be called when the file writing has reached
+ * certain size. Application can use this callback, for example, to limit
+ * the size of the output file.
+ *
+ * @param port		The file writer port.
+ * @param pos		The file position on which the callback will be called.
+ * @param user_data	User data to be specified in the callback, and will be
+ *			given on the callback.
+ * @param cb		Callback to be called. If the callback returns non-
+ *			PJ_SUCCESS, the writing will stop. Note that if 
+ *			application destroys the port in the callback, it must
+ *			return non-PJ_SUCCESS here.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) 
+pjmedia_mp3_writer_port_set_cb( pjmedia_port *port,
+				pj_size_t pos,
+				void *user_data,
+				pj_status_t (*cb)(pjmedia_port *port,
+							void *usr_data));
+
+
+/**
+ * @}
+ */
+
+
+PJ_END_DECL
+
+#endif	/* __PJMEDIA_MP3_PORT_H__ */
+