diff options
Diffstat (limited to 'engines/sci/sfx/device/camd-midi.cpp')
| -rw-r--r-- | engines/sci/sfx/device/camd-midi.cpp | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/engines/sci/sfx/device/camd-midi.cpp b/engines/sci/sfx/device/camd-midi.cpp new file mode 100644 index 0000000000..3af12f196e --- /dev/null +++ b/engines/sci/sfx/device/camd-midi.cpp @@ -0,0 +1,161 @@ +/*************************************************************************** + camd-midi.c Copyright (C) 2005--08 Walter van Niftrik, Christoph Reichenbach + + + This program may be modified and copied freely according to the terms of + the GNU general public license (GPL), as long as the above copyright + notice and the licensing information contained herein are preserved. + + Please refer to www.gnu.org for licensing details. + + This work is provided AS IS, without warranty of any kind, expressed or + implied, including but not limited to the warranties of merchantibility, + noninfringement, and fitness for a specific purpose. The author will not + be held liable for any damage caused by this work or derivatives of it. + + By using this source code, you agree to the licensing terms as stated + above. + + + Please contact the maintainer for bug reports or inquiries. + + Current Maintainer: + + Walter van Niftrik <w.f.b.w.v.niftrik@stud.tue.nl> + +***************************************************************************/ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif +#ifdef HAVE_PROTO_CAMD_H + +#include "sfx_engine.h" +#include "../device.h" + +#include <proto/camd.h> +#include <proto/dos.h> +#include <proto/exec.h> +#include <proto/intuition.h> +#include <stdio.h> + + +#define SWAP_BYTES +#define FILL_BYTES + +#define SCI_CAMD_MIDI_VERSION "0.1" +#define SYSEX_PREFIX 0xf0 + +static const char *devicename = "via686.out.0"; + +struct Library *CamdBase = NULL; +struct CamdIFace *ICamd = NULL; +static struct MidiLink *midi_link = NULL; +static struct MidiNode *midi_node = NULL; + +#define ABORT(m) { \ + if (CamdBase) \ + IExec->CloseLibrary(CamdBase); \ + sciprintf("[SFX] CAMD driver: "); \ + sciprintf(m); \ + sciprintf("\n"); \ + return SFX_ERROR; \ + } + +static int +camd_init(midi_writer_t *self) +{ + sciprintf("[SFX] Initialising CAMD raw MIDI backend, v%s\n", SCI_CAMD_MIDI_VERSION); + + CamdBase = IExec->OpenLibrary("camd.library", 36L); + if (!CamdBase) + ABORT("Could not open 'camd.library'"); + + ICamd = (struct CamdIFace *) IExec->GetInterface(CamdBase, "main", 1, NULL); + if (!ICamd) + ABORT("Error while retrieving CAMD interface\n"); + + midi_node = ICamd->CreateMidi(MIDI_MsgQueue, 0L, MIDI_SysExSize, 4096L, MIDI_Name, "freesci", TAG_END); + if (!midi_node) + ABORT("Could not create CAMD MIDI node"); + + midi_link = ICamd->AddMidiLink(midi_node, MLTYPE_Sender, MLINK_Location, devicename, TAG_END); + if (!midi_link) + ABORT(("Could not create CAMD MIDI link to '%s'", devicename)); + + sciprintf("[SFX] CAMD initialisation completed\n"); + + return SFX_OK; +} + +static int +camd_set_option(midi_writer_t *self, char *name, char *value) +{ + return SFX_ERROR; +} + +#define MAX_MIDI_LEN 3 + +static int +camd_write(midi_writer_t *self, unsigned char *buffer, int len) +{ + if (len == 0) + return SFX_OK; + + if (buffer[0] == SYSEX_PREFIX) { + /* Must send this as a SysEx */ + ICamd->PutSysEx(midi_link, buffer); + } else { + ULONG data = 0l; + int i; + int readlen = (len > MAX_MIDI_LEN) ? MAX_MIDI_LEN : len; + + for (i = 0; i < readlen; i++) + if (len >= i) { + data <<= 8; + data |= buffer[i]; + } + data <<= (8 * (sizeof(ULONG) - readlen)); + + if (len > MAX_MIDI_LEN) + sciprintf("[SFX] Warning: Truncated MIDI message to fit CAMD format (sent %d: %02x %02x %02x, real length %d)\n", + MAX_MIDI_LEN, buffer[0], buffer[1], buffer[2], len); + + ICamd->PutMidi(midi_link, data); + } + + return SFX_OK; +} + +static void +camd_delay(midi_writer_t *self, int ticks) +{ +} + +static void +camd_reset_timer(midi_writer_t *self) +{ +} + +static void +camd_close(midi_writer_t *self) +{ +#ifdef NO_OP + return; +#endif + if (CamdBase) + IExec->CloseLibrary(CamdBase); +} + +midi_writer_t sfx_device_midi_camd = { + "camd-midi", + &camd_init, + &camd_set_option, + &camd_write, + &camd_delay, + NULL, + &camd_reset_timer, + &camd_close +}; + +#endif /* HAVE_PROTO_CAMD_H */ |