SMF reading/writing fixes.

git-svn-id: http://svn.drobilla.net/lad/raul@345 a436a847-0d15-0410-975c-d299462d15a1

4 files changed, 207 insertions, 0 deletions

diff --git a/raul/Makefile.am b/raul/Makefile.am
index b1d5f12..94ec10b 100644
--- a/raul/Makefile.am
+++ b/raul/Makefile.am
@@ -1,6 +1,7 @@
 raulincludedir = $(includedir)/raul
 
 raulinclude_HEADERS = \
+	midi_events.h \
 	Array.h \
 	Atom.h \
 	AtomLiblo.h \
@@ -30,6 +31,7 @@ raulinclude_HEADERS = \
 	TimeSlice.h \
 	Quantizer.h \
 	MIDISink.h \
+	SMFReader.h \
 	SMFWriter.h 
 
 if WITH_LIBLO
diff --git a/raul/SMFReader.h b/raul/SMFReader.h
new file mode 100644
index 0000000..3878044
--- /dev/null
+++ b/raul/SMFReader.h
@@ -0,0 +1,67 @@
+/* This file is part of Raul.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Raul 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.
+ * 
+ * Raul 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 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef RAUL_SMFREADER_H
+#define RAUL_SMFREADER_H
+
+#include <stdexcept>
+
+namespace Raul {
+
+
+/** Standard Midi File (Type 0) Reader
+ *
+ * Currently this only reads SMF files with tempo-based timing.
+ */
+class SMFReader {
+public:
+	SMFReader();
+	~SMFReader();
+
+	bool open(const std::string& filename);
+
+	uint16_t ppqn() const { return _ppqn; }
+
+	size_t num_tracks() throw (std::logic_error);
+
+	int read_event(size_t buf_len, char* buf, size_t* ev_size, uint64_t* ev_time);
+	
+	void close();
+
+protected:
+	//static const uint32_t VAR_LEN_MAX = 0x0FFFFFFF;
+	
+	/** size of SMF header, including MTrk chunk header */
+	static const uint32_t HEADER_SIZE = 22;
+
+	uint32_t read_var_len() const;
+
+	std::string    _filename;
+	FILE*          _fd;
+	uint16_t       _ppqn;
+	uint64_t       _last_ev_time;
+	uint32_t       _track_size;
+/*	Raul::BeatTime _start_time;
+	Raul::BeatTime _last_ev_time; ///< Time last event was written relative to _start_time
+	*/
+};
+
+
+} // namespace Raul
+
+#endif // RAUL_SMFREADER_H
+
diff --git a/raul/SMFWriter.h b/raul/SMFWriter.h
index b512cff..875c151 100644
--- a/raul/SMFWriter.h
+++ b/raul/SMFWriter.h
@@ -34,6 +34,8 @@ public:
 	bool start(const std::string& filename,
 	           BeatTime           start_time=0) throw (std::logic_error);
 
+	uint16_t ppqn() const { return _ppqn; }
+
 	void write_event(BeatTime             time,
 	                 size_t               ev_size,
 	                 const unsigned char* ev) throw (std::logic_error);
diff --git a/raul/midi_events.h b/raul/midi_events.h
new file mode 100644
index 0000000..5c1183e
--- /dev/null
+++ b/raul/midi_events.h
@@ -0,0 +1,136 @@
+/* Definitions to ease working with raw MIDI.
+ *
+ * Adapted from ALSA's asounddef.h
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifndef RAUL_MIDIEVENTS_H
+#define RAUL_MIDIEVENTS_H
+
+
+/**
+ * \defgroup midi MIDI Definitions
+ * MIDI command and controller number definitions.
+ * \{
+ */
+
+// Commands:
+
+#define MIDI_CMD_NOTE_OFF               0x80 /**< note off */
+#define MIDI_CMD_NOTE_ON                0x90 /**< note on */
+#define MIDI_CMD_NOTE_PRESSURE          0xA0 /**< key pressure */
+#define MIDI_CMD_CONTROL                0xB0 /**< control change */
+#define MIDI_CMD_PGM_CHANGE             0xC0 /**< program change */
+#define MIDI_CMD_CHANNEL_PRESSURE       0xD0 /**< channel pressure */
+#define MIDI_CMD_BENDER                 0xE0 /**< pitch bender */
+
+#define MIDI_CMD_COMMON_SYSEX           0xF0 /**< sysex (system exclusive) begin */
+#define MIDI_CMD_COMMON_MTC_QUARTER     0xF1 /**< MTC quarter frame */
+#define MIDI_CMD_COMMON_SONG_POS        0xF2 /**< song position */
+#define MIDI_CMD_COMMON_SONG_SELECT     0xF3 /**< song select */
+#define MIDI_CMD_COMMON_TUNE_REQUEST    0xF6 /**< tune request */
+#define MIDI_CMD_COMMON_SYSEX_END       0xF7 /**< end of sysex */
+#define MIDI_CMD_COMMON_CLOCK           0xF8 /**< clock */
+#define MIDI_CMD_COMMON_TICK            0xF9 /**< tick */
+#define MIDI_CMD_COMMON_START           0xFA /**< start */
+#define MIDI_CMD_COMMON_CONTINUE        0xFB /**< continue */
+#define MIDI_CMD_COMMON_STOP            0xFC /**< stop */
+#define MIDI_CMD_COMMON_SENSING         0xFE /**< active sensing */
+#define MIDI_CMD_COMMON_RESET           0xFF /**< reset */
+
+
+// Controllers:
+
+#define MIDI_CTL_MSB_BANK               0x00 /**< Bank selection */
+#define MIDI_CTL_MSB_MODWHEEL           0x01 /**< Modulation */
+#define MIDI_CTL_MSB_BREATH             0x02 /**< Breath */
+#define MIDI_CTL_MSB_FOOT               0x04 /**< Foot */
+#define MIDI_CTL_MSB_PORTAMENTO_TIME    0x05 /**< Portamento time */
+#define MIDI_CTL_MSB_DATA_ENTRY         0x06 /**< Data entry */
+#define MIDI_CTL_MSB_MAIN_VOLUME        0x07 /**< Main volume */
+#define MIDI_CTL_MSB_BALANCE            0x08 /**< Balance */
+#define MIDI_CTL_MSB_PAN                0x0A /**< Panpot */
+#define MIDI_CTL_MSB_EXPRESSION         0x0B /**< Expression */
+#define MIDI_CTL_MSB_EFFECT1            0x0C /**< Effect1 */
+#define MIDI_CTL_MSB_EFFECT2            0x0D /**< Effect2 */
+#define MIDI_CTL_MSB_GENERAL_PURPOSE1   0x10 /**< General purpose 1 */
+#define MIDI_CTL_MSB_GENERAL_PURPOSE2   0x11 /**< General purpose 2 */
+#define MIDI_CTL_MSB_GENERAL_PURPOSE3   0x12 /**< General purpose 3 */
+#define MIDI_CTL_MSB_GENERAL_PURPOSE4   0x13 /**< General purpose 4 */
+#define MIDI_CTL_LSB_BANK               0x20 /**< Bank selection */
+#define MIDI_CTL_LSB_MODWHEEL           0x21 /**< Modulation */
+#define MIDI_CTL_LSB_BREATH             0x22 /**< Breath */
+#define MIDI_CTL_LSB_FOOT               0x24 /**< Foot */
+#define MIDI_CTL_LSB_PORTAMENTO_TIME    0x25 /**< Portamento time */
+#define MIDI_CTL_LSB_DATA_ENTRY         0x26 /**< Data entry */
+#define MIDI_CTL_LSB_MAIN_VOLUME        0x27 /**< Main volume */
+#define MIDI_CTL_LSB_BALANCE            0x28 /**< Balance */
+#define MIDI_CTL_LSB_PAN                0x2A /**< Panpot */
+#define MIDI_CTL_LSB_EXPRESSION         0x2B /**< Expression */
+#define MIDI_CTL_LSB_EFFECT1            0x2C /**< Effect1 */
+#define MIDI_CTL_LSB_EFFECT2            0x2D /**< Effect2 */
+#define MIDI_CTL_LSB_GENERAL_PURPOSE1   0x30 /**< General purpose 1 */
+#define MIDI_CTL_LSB_GENERAL_PURPOSE2   0x31 /**< General purpose 2 */
+#define MIDI_CTL_LSB_GENERAL_PURPOSE3   0x32 /**< General purpose 3 */
+#define MIDI_CTL_LSB_GENERAL_PURPOSE4   0x33 /**< General purpose 4 */
+#define MIDI_CTL_SUSTAIN                0x40 /**< Sustain pedal */
+#define MIDI_CTL_PORTAMENTO             0x41 /**< Portamento */
+#define MIDI_CTL_SOSTENUTO              0x42 /**< Sostenuto */
+#define MIDI_CTL_SUSTENUTO              0x42 /**< Sostenuto (a typo in the older version) */
+#define MIDI_CTL_SOFT_PEDAL             0x43 /**< Soft pedal */
+#define MIDI_CTL_LEGATO_FOOTSWITCH      0x44 /**< Legato foot switch */
+#define MIDI_CTL_HOLD2                  0x45 /**< Hold2 */
+#define MIDI_CTL_SC1_SOUND_VARIATION    0x46 /**< SC1 Sound Variation */
+#define MIDI_CTL_SC2_TIMBRE             0x47 /**< SC2 Timbre */
+#define MIDI_CTL_SC3_RELEASE_TIME       0x48 /**< SC3 Release Time */
+#define MIDI_CTL_SC4_ATTACK_TIME        0x49 /**< SC4 Attack Time */
+#define MIDI_CTL_SC5_BRIGHTNESS         0x4A /**< SC5 Brightness */
+#define MIDI_CTL_SC6                    0x4B /**< SC6 */
+#define MIDI_CTL_SC7                    0x4C /**< SC7 */
+#define MIDI_CTL_SC8                    0x4D /**< SC8 */
+#define MIDI_CTL_SC9                    0x4E /**< SC9 */
+#define MIDI_CTL_SC10                   0x4F /**< SC10 */
+#define MIDI_CTL_GENERAL_PURPOSE5       0x50 /**< General purpose 5 */
+#define MIDI_CTL_GENERAL_PURPOSE6       0x51 /**< General purpose 6 */
+#define MIDI_CTL_GENERAL_PURPOSE7       0x52 /**< General purpose 7 */
+#define MIDI_CTL_GENERAL_PURPOSE8       0x53 /**< General purpose 8 */
+#define MIDI_CTL_PORTAMENTO_CONTROL     0x54 /**< Portamento control */
+#define MIDI_CTL_E1_REVERB_DEPTH        0x5B /**< E1 Reverb Depth */
+#define MIDI_CTL_E2_TREMOLO_DEPTH       0x5C /**< E2 Tremolo Depth */
+#define MIDI_CTL_E3_CHORUS_DEPTH        0x5D /**< E3 Chorus Depth */
+#define MIDI_CTL_E4_DETUNE_DEPTH        0x5E /**< E4 Detune Depth */
+#define MIDI_CTL_E5_PHASER_DEPTH        0x5F /**< E5 Phaser Depth */
+#define MIDI_CTL_DATA_INCREMENT         0x60 /**< Data Increment */
+#define MIDI_CTL_DATA_DECREMENT         0x61 /**< Data Decrement */
+#define MIDI_CTL_NONREG_PARM_NUM_LSB    0x62 /**< Non-registered parameter number */
+#define MIDI_CTL_NONREG_PARM_NUM_MSB    0x63 /**< Non-registered parameter number */
+#define MIDI_CTL_REGIST_PARM_NUM_LSB    0x64 /**< Registered parameter number */
+#define MIDI_CTL_REGIST_PARM_NUM_MSB    0x65 /**< Registered parameter number */
+#define MIDI_CTL_ALL_SOUNDS_OFF         0x78 /**< All sounds off */
+#define MIDI_CTL_RESET_CONTROLLERS      0x79 /**< Reset Controllers */
+#define MIDI_CTL_LOCAL_CONTROL_SWITCH   0x7A /**< Local control switch */
+#define MIDI_CTL_ALL_NOTES_OFF          0x7B /**< All notes off */
+#define MIDI_CTL_OMNI_OFF               0x7C /**< Omni off */
+#define MIDI_CTL_OMNI_ON                0x7D /**< Omni on */
+#define MIDI_CTL_MONO1                  0x7E /**< Mono1 */
+#define MIDI_CTL_MONO2                  0x7F /**< Mono2 */
+//@}
+
+
+/** \} */
+
+#endif /* RAUL_MIDIEVENTS_H */