FS#6096. Recording on PortalPlayer targets (H10, iPod Video, iPod 4g, iPod Color, iPod Nano).

* Fix failed compile of enc_config.c when HAVE_MPEG2_SAMPR is not defined.
* Fix bug in AIFF encoder header creation on little endian targets.
* Add recording screen keymaps for H10 and iPod.
* Move pcm_playback PP specific code to target tree.
* Add recording code to wmcodec drivers.
* Add pcm_record code.

Some problems still remain:
* Playback doesn't work after recording until Rockbox is restarted.
* Gain control not implemented.
* Only 16-bit/44KHz for now. The hardware should be capable of up to 24-bit/96KHz.
* Line-in recording not tested on H10.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11794 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 84 insertions, 0 deletions

diff --git a/firmware/target/arm/audio-pp.c b/firmware/target/arm/audio-pp.c
new file mode 100644
index 0000000000..c08db8a88a
--- /dev/null
+++ b/firmware/target/arm/audio-pp.c
@@ -0,0 +1,84 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2006 by Michael Sevakis
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "system.h"
+#include "cpu.h"
+#include "audio.h"
+#include "sound.h"
+
+void audio_set_output_source(int source)
+{
+    if ((unsigned)source >= AUDIO_NUM_SOURCES)
+        source = AUDIO_SRC_PLAYBACK;
+} /* audio_set_output_source */
+
+void audio_set_source(int source, unsigned flags)
+{
+    /* Prevent pops from unneeded switching */
+    static int last_source = AUDIO_SRC_PLAYBACK;
+    bool recording = flags & SRCF_RECORDING;
+    static bool last_recording = false;
+
+    switch (source)
+    {
+        default:                        /* playback - no recording */
+            source = AUDIO_SRC_PLAYBACK;
+        case AUDIO_SRC_PLAYBACK:
+            if (source != last_source)
+            {
+                audiohw_disable_recording();
+                audiohw_set_monitor(false);
+            }
+        break;
+
+        case AUDIO_SRC_MIC:             /* recording only */
+            if (source != last_source)
+            {
+                audiohw_enable_recording(true);  /* source mic */
+                audiohw_set_monitor(false);
+            }
+        break;
+
+        case AUDIO_SRC_LINEIN:          /* recording only */
+            if (source != last_source)
+            {
+                audiohw_enable_recording(false); /* source line */
+                audiohw_set_monitor(false);
+            }
+        break;
+#ifdef CONFIG_TUNER
+        case AUDIO_SRC_FMRADIO:         /* recording and playback */
+            if (!recording)
+                audiohw_set_recvol(0, 0, AUDIO_GAIN_LINEIN);
+
+            if (source == last_source && recording == last_recording)
+                break;
+
+            last_recording = recording;
+
+            /* I2S recording and playback */
+            audiohw_enable_recording(false);    /* source line */
+            audiohw_set_monitor(!recording);
+        break;
+#endif
+    } /* end switch */
+
+    last_source = source;
+} /* audio_set_source */
+
+