From 0bb683fa19ffdfbf13e40fc3940167b7ac5b6fa6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Duval?= <korli@users.berlios.de>
Date: Thu, 10 Nov 2005 16:45:45 +0000
Subject: [PATCH] added midi support, untested

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14831 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 .../kernel/drivers/audio/echo/24/Jamfile      |   2 +
 .../kernel/drivers/audio/echo/3g/Jamfile      |   2 +
 .../kernel/drivers/audio/echo/echo.cpp        |  26 +++
 src/add-ons/kernel/drivers/audio/echo/echo.h  |  17 +-
 .../kernel/drivers/audio/echo/gals/Jamfile    |   2 +
 .../kernel/drivers/audio/echo/midi.cpp        | 152 ++++++++++++++++++
 6 files changed, 200 insertions(+), 1 deletion(-)
 create mode 100644 src/add-ons/kernel/drivers/audio/echo/midi.cpp

diff --git a/src/add-ons/kernel/drivers/audio/echo/24/Jamfile b/src/add-ons/kernel/drivers/audio/echo/24/Jamfile
index ae59497dc4..4a9804abe3 100644
--- a/src/add-ons/kernel/drivers/audio/echo/24/Jamfile
+++ b/src/add-ons/kernel/drivers/audio/echo/24/Jamfile
@@ -46,6 +46,7 @@ KernelAddon echo24 : kernel drivers bin :
 	kernel_cpp.cpp
 	debug.c
 	echo.cpp
+	midi.cpp
 	multi.cpp
 	util.c
 	$(echo_files)
@@ -68,6 +69,7 @@ SEARCH on [ FGristFiles
 SEARCH on [ FGristFiles
 		debug.c
 		echo.cpp
+		midi.cpp
 		multi.cpp
 		util.c
 	] = [ FDirName $(HAIKU_TOP) src add-ons kernel drivers audio echo ] ;
diff --git a/src/add-ons/kernel/drivers/audio/echo/3g/Jamfile b/src/add-ons/kernel/drivers/audio/echo/3g/Jamfile
index 0d95eb2b52..edb29eb095 100644
--- a/src/add-ons/kernel/drivers/audio/echo/3g/Jamfile
+++ b/src/add-ons/kernel/drivers/audio/echo/3g/Jamfile
@@ -39,6 +39,7 @@ KernelAddon echo3g : kernel drivers bin :
 	kernel_cpp.cpp
 	debug.c
 	echo.cpp
+	midi.cpp
 	multi.cpp
 	util.c
 	$(echo_files)
@@ -61,6 +62,7 @@ SEARCH on [ FGristFiles
 SEARCH on [ FGristFiles
 		debug.c
 		echo.cpp
+		midi.cpp
 		multi.cpp
 		util.c
 	] = [ FDirName $(HAIKU_TOP) src add-ons kernel drivers audio echo ] ;
diff --git a/src/add-ons/kernel/drivers/audio/echo/echo.cpp b/src/add-ons/kernel/drivers/audio/echo/echo.cpp
index 20c992de82..b24f857ed3 100644
--- a/src/add-ons/kernel/drivers/audio/echo/echo.cpp
+++ b/src/add-ons/kernel/drivers/audio/echo/echo.cpp
@@ -52,6 +52,9 @@ int32 num_names;
 char * names[NUM_CARDS*20+1];
 
 extern device_hooks multi_hooks;
+#ifdef MIDI_SUPPORT
+extern device_hooks midi_hooks;
+#endif
 
 int32 echo_int(void *arg);
 status_t init_hardware(void);
@@ -380,6 +383,11 @@ int32 echo_int(void *arg)
 		return B_UNHANDLED_INTERRUPT;
 	}
 
+#ifdef MIDI_SUPPORT
+	if (midiReceived)
+		release_sem(card->midi.midi_ready_sem);
+#endif
+
 	LIST_FOREACH(stream, &card->streams, next) {
 		if ((stream->state & ECHO_STATE_STARTED) == 0 ||
 			(stream->inth == NULL))
@@ -547,6 +555,11 @@ static void
 make_device_names(
 	echo_dev * card)
 {
+
+#ifdef MIDI_SUPPORT
+	sprintf(card->midi.name, "midi/"DRIVER_NAME"/%ld", card-cards+1);
+	names[num_names++] = card->midi.name;
+#endif
 	sprintf(card->name, "audio/multi/"DRIVER_NAME"/%ld", card-cards+1);
 	names[num_names++] = card->name;
 
@@ -670,6 +683,10 @@ echo_setup(echo_dev * card)
 	/* Init mems list */
 	LIST_INIT(&(card->mems));
 	
+#ifdef MIDI_SUPPORT
+	card->midi.midi_ready_sem = create_sem(0, "midi sem");
+#endif
+	
 	PRINT(("installing interrupt : %x\n", card->irq));
 	install_io_interrupt_handler(card->irq, echo_int, card, 0);
 	
@@ -701,6 +718,10 @@ echo_shutdown(echo_dev *card)
 		PRINT(("echo_shutdown: error when CloseMixer\n"));
 
 	remove_io_interrupt_handler(card->irq, echo_int, card);
+
+#ifdef MIDI_SUPPORT
+        delete_sem(card->midi.midi_ready_sem);
+#endif
 	
 	delete card->pEG;
 	delete card->pOSS;
@@ -747,6 +768,11 @@ find_device(const char * name)
 	PRINT(("find_device(%s)\n", name));
 
 	for (ix=0; ix<num_cards; ix++) {
+#ifdef MIDI_SUPPORT
+		if (!strcmp(cards[ix].midi.name, name)) {
+			return &midi_hooks;
+		}
+#endif
 		if (!strcmp(cards[ix].name, name)) {
 			return &multi_hooks;
 		}
diff --git a/src/add-ons/kernel/drivers/audio/echo/echo.h b/src/add-ons/kernel/drivers/audio/echo/echo.h
index bc1c27165c..2850ef0591 100644
--- a/src/add-ons/kernel/drivers/audio/echo/echo.h
+++ b/src/add-ons/kernel/drivers/audio/echo/echo.h
@@ -35,6 +35,18 @@
 #define DEVNAME 32
 #define NUM_CARDS 3
 
+
+/*
+ * Echo midi
+ */
+
+typedef struct _midi_dev {
+	int32		count;
+	char		name[64];
+	sem_id 		midi_ready_sem;
+	ECHOGALS_MIDI_IN_CONTEXT	context;
+} midi_dev;
+
 #define	ECHO_USE_PLAY		(1 << 0)
 #define	ECHO_USE_RECORD	(1 << 1)
 #define ECHO_STATE_STARTED	(1 << 0)
@@ -103,7 +115,10 @@ typedef struct _echo_dev {
 	echo_stream		*rstream;
 	
 	/* multi_audio */
-	multi_dev	multi;			
+	multi_dev	multi;		
+#ifdef MIDI_SUPPORT
+	midi_dev 	midi;
+#endif	
 } echo_dev;
 
 extern int32 num_cards;
diff --git a/src/add-ons/kernel/drivers/audio/echo/gals/Jamfile b/src/add-ons/kernel/drivers/audio/echo/gals/Jamfile
index b0342566d0..71d79feb46 100644
--- a/src/add-ons/kernel/drivers/audio/echo/gals/Jamfile
+++ b/src/add-ons/kernel/drivers/audio/echo/gals/Jamfile
@@ -44,6 +44,7 @@ KernelAddon echogals : kernel drivers bin :
 	kernel_cpp.cpp
 	debug.c
 	echo.cpp
+	midi.cpp
 	multi.cpp
 	util.c
 	$(echo_files)
@@ -66,6 +67,7 @@ SEARCH on [ FGristFiles
 SEARCH on [ FGristFiles
 		debug.c
 		echo.cpp
+		midi.cpp
 		multi.cpp
 		util.c
 	] = [ FDirName $(HAIKU_TOP) src add-ons kernel drivers audio echo ] ;
diff --git a/src/add-ons/kernel/drivers/audio/echo/midi.cpp b/src/add-ons/kernel/drivers/audio/echo/midi.cpp
new file mode 100644
index 0000000000..803108935a
--- /dev/null
+++ b/src/add-ons/kernel/drivers/audio/echo/midi.cpp
@@ -0,0 +1,152 @@
+//------------------------------------------------------------------------------
+//
+//  EchoGals/Echo24 BeOS Driver for Echo audio cards
+//
+//	Copyright (c) 2005, Jérôme Duval
+//
+//	Permission is hereby granted, free of charge, to any person obtaining a
+//	copy of this software and associated documentation files (the "Software"),
+//	to deal in the Software without restriction, including without limitation
+//	the rights to use, copy, modify, merge, publish, distribute, sublicense,
+//	and/or sell copies of the Software, and to permit persons to whom the
+//	Software is furnished to do so, subject to the following conditions:
+//
+//	The above copyright notice and this permission notice shall be included in
+//	all copies or substantial portions of the Software.
+//
+//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+//	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+//	DEALINGS IN THE SOFTWARE.
+
+#include "echo.h"
+#include "debug.h"
+#include "midi_driver.h"
+
+static status_t midi_open(const char *name, uint32 flags, void **cookie);
+static status_t midi_close(void *cookie);
+static status_t midi_free(void *cookie);
+static status_t midi_control(void *cookie, uint32 op, void *data, size_t len);
+static status_t midi_read(void *cookie, off_t pos, void *data, size_t *len);
+static status_t midi_write(void *cookie, off_t pos, const void *data, size_t *len);
+
+
+device_hooks midi_hooks = {
+    &midi_open,
+    &midi_close,
+    &midi_free,
+    &midi_control,
+    &midi_read,
+    &midi_write,
+    NULL,		/* select */
+    NULL,		/* deselect */
+    NULL,		/* readv */
+    NULL		/* writev */
+};
+
+static status_t
+midi_open(
+	const char * name,
+	uint32 flags,
+	void ** cookie)
+{
+	int ix;
+	
+	LOG(("midi_open()\n"));
+
+	*cookie = NULL;
+	for (ix=0; ix<num_cards; ix++) {
+		if (!strcmp(name, cards[ix].midi.name)) {
+			break;
+		}
+	}
+	if (ix >= num_cards) {
+		LOG(("bad device\n"));
+		return ENODEV;
+	}
+
+	*cookie = &cards[ix];
+	atomic_add(&cards[ix].midi.count, 1);
+	memset(&cards[ix].midi.context, 0, sizeof(cards[ix].midi.context));
+	cards[ix].pEG->OpenMidiInput(&cards[ix].midi.context);
+	return B_OK;
+}
+
+
+static status_t
+midi_close(
+	void * cookie)
+{
+	LOG(("midi_close()\n"));
+	return B_OK;
+}
+
+
+static status_t
+midi_free(
+	void * cookie)
+{
+	echo_dev *card = (echo_dev *) cookie;
+	
+	LOG(("midi_free()\n"));
+	
+	card->pEG->CloseMidiInput(&card->midi.context);
+	
+	atomic_add(&card->midi.count, -1);
+	LOG(("midi_free() done\n"));
+	return B_OK;
+}
+
+
+static status_t
+midi_control(
+	void * cookie,
+	uint32 iop,
+	void * data,
+	size_t len)
+{
+	return B_ERROR;
+}
+
+
+static status_t
+midi_read(
+	void * cookie,
+	off_t pos,
+	void * ptr,
+	size_t * nread)
+{
+	echo_dev *card = (echo_dev *) cookie;
+	ECHOSTATUS 		err;
+	DWORD			midiData;
+	LONGLONG 		timestamp;
+	
+	if (acquire_sem(card->midi.midi_ready_sem) != B_OK)
+		return B_ERROR;
+	
+	err = card->pEG->ReadMidiByte(&card->midi.context, midiData, timestamp);
+	if (err == ECHOSTATUS_OK) {
+		*nread = 1;
+		*(PDWORD)ptr = midiData;
+	}
+	return B_ERROR;
+}
+
+
+static status_t
+midi_write(
+	void * cookie, 
+	off_t pos,
+	const void * ptr, 
+	size_t * nwritten)
+{
+	echo_dev *card = (echo_dev *) cookie;
+	ECHOSTATUS 		err;
+	
+	err = card->pEG->WriteMidi(*nwritten, (PBYTE)ptr, nwritten);
+	return (err != ECHOSTATUS_OK) ? B_ERROR : B_OK;
+}
+