--- /dev/null
+/* FluidSynth - A Software Synthesizer
+ *
+ * Copyright (C) 2003 Peter Hanappe and others.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License
+ * as published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#include "fluid_midi.h"
+#include "fluid_sys.h"
+#include "fluid_synth.h"
+#include "fluid_settings.h"
+
+
+static int fluid_midi_event_length(unsigned char event);
+
+/* Read the entire contents of a file into memory, allocating enough memory
+ * for the file, and returning the length and the buffer.
+ * Note: This rewinds the file to the start before reading.
+ * Returns NULL if there was an error reading or allocating memory.
+ */
+static char* fluid_file_read_full(fluid_file fp, size_t* length);
+#define READ_FULL_INITIAL_BUFLEN 1024
+
+
+/***************************************************************
+ *
+ * MIDIFILE
+ */
+
+/**
+ * Return a new MIDI file handle for parsing an already-loaded MIDI file.
+ * @internal
+ * @param buffer Pointer to full contents of MIDI file (borrows the pointer).
+ * The caller must not free buffer until after the fluid_midi_file is deleted.
+ * @param length Size of the buffer in bytes.
+ * @return New MIDI file handle or NULL on error.
+ */
+fluid_midi_file *
+new_fluid_midi_file(const char* buffer, size_t length)
+{
+ fluid_midi_file *mf;
+
+ mf = FLUID_NEW(fluid_midi_file);
+ if (mf == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ return NULL;
+ }
+ FLUID_MEMSET(mf, 0, sizeof(fluid_midi_file));
+
+ mf->c = -1;
+ mf->running_status = -1;
+
+ mf->buffer = buffer;
+ mf->buf_len = length;
+ mf->buf_pos = 0;
+ mf->eof = FALSE;
+
+ if (fluid_midi_file_read_mthd(mf) != FLUID_OK) {
+ FLUID_FREE(mf);
+ return NULL;
+ }
+ return mf;
+}
+
+static char*
+fluid_file_read_full(fluid_file fp, size_t* length)
+{
+ size_t buflen;
+ char* buffer;
+ size_t n;
+ /* Work out the length of the file in advance */
+ if (FLUID_FSEEK(fp, 0, SEEK_END) != 0)
+ {
+ FLUID_LOG(FLUID_ERR, "File load: Could not seek within file");
+ return NULL;
+ }
+ buflen = ftell(fp);
+ if (FLUID_FSEEK(fp, 0, SEEK_SET) != 0)
+ {
+ FLUID_LOG(FLUID_ERR, "File load: Could not seek within file");
+ return NULL;
+ }
+ FLUID_LOG(FLUID_DBG, "File load: Allocating %d bytes", buflen);
+ buffer = FLUID_MALLOC(buflen);
+ if (buffer == NULL) {
+ FLUID_LOG(FLUID_PANIC, "Out of memory");
+ return NULL;
+ }
+ n = FLUID_FREAD(buffer, 1, buflen, fp);
+ if (n != buflen) {
+ FLUID_LOG(FLUID_ERR, "Only read %d bytes; expected %d", n,
+ buflen);
+ FLUID_FREE(buffer);
+ return NULL;
+ };
+ *length = n;
+ return buffer;
+}
+
+/**
+ * Delete a MIDI file handle.
+ * @internal
+ * @param mf MIDI file handle to close and free.
+ */
+void
+delete_fluid_midi_file (fluid_midi_file *mf)
+{
+ if (mf == NULL) {
+ return;
+ }
+ FLUID_FREE(mf);
+ return;
+}
+
+/*
+ * Gets the next byte in a MIDI file, taking into account previous running status.
+ *
+ * returns FLUID_FAILED if EOF or read error
+ */
+int
+fluid_midi_file_getc (fluid_midi_file *mf)
+{
+ unsigned char c;
+ if (mf->c >= 0) {
+ c = mf->c;
+ mf->c = -1;
+ } else {
+ if (mf->buf_pos >= mf->buf_len) {
+ mf->eof = TRUE;
+ return FLUID_FAILED;
+ }
+ c = mf->buffer[mf->buf_pos++];
+ mf->trackpos++;
+ }
+ return (int) c;
+}
+
+/*
+ * Saves a byte to be returned the next time fluid_midi_file_getc() is called,
+ * when it is necessary according to running status.
+ */
+int
+fluid_midi_file_push(fluid_midi_file *mf, int c)
+{
+ mf->c = c;
+ return FLUID_OK;
+}
+
+/*
+ * fluid_midi_file_read
+ */
+int
+fluid_midi_file_read(fluid_midi_file *mf, void *buf, int len)
+{
+ int num = len < mf->buf_len - mf->buf_pos
+ ? len : mf->buf_len - mf->buf_pos;
+ if (num != len) {
+ mf->eof = TRUE;
+ }
+ if (num < 0) {
+ num = 0;
+ }
+ /* Note: Read bytes, even if there aren't enough, but only increment
+ * trackpos if successful (emulates old behaviour of fluid_midi_file_read)
+ */
+ FLUID_MEMCPY(buf, mf->buffer+mf->buf_pos, num);
+ mf->buf_pos += num;
+ if (num == len)
+ mf->trackpos += num;
+#if DEBUG
+ else
+ FLUID_LOG(FLUID_DBG, "Could not read the requested number of bytes");
+#endif
+ return (num != len) ? FLUID_FAILED : FLUID_OK;
+}
+
+/*
+ * fluid_midi_file_skip
+ */
+int
+fluid_midi_file_skip (fluid_midi_file *mf, int skip)
+{
+ int new_pos = mf->buf_pos + skip;
+ /* Mimic the behaviour of fseek: Error to seek past the start of file, but
+ * OK to seek past end (this just puts it into the EOF state). */
+ if (new_pos < 0) {
+ FLUID_LOG(FLUID_ERR, "Failed to seek position in file");
+ return FLUID_FAILED;
+ }
+ /* Clear the EOF flag, even if moved past the end of the file (this is
+ * consistent with the behaviour of fseek). */
+ mf->eof = FALSE;
+ mf->buf_pos = new_pos;
+ return FLUID_OK;
+}
+
+/*
+ * fluid_midi_file_eof
+ */
+int fluid_midi_file_eof(fluid_midi_file* mf)
+{
+ /* Note: This does not simply test whether the file read pointer is past
+ * the end of the file. It mimics the behaviour of feof by actually
+ * testing the stateful EOF condition, which is set to TRUE if getc or
+ * fread have attempted to read past the end (but not if they have
+ * precisely reached the end), but reset to FALSE upon a successful seek.
+ */
+ return mf->eof;
+}
+
+/*
+ * fluid_midi_file_read_mthd
+ */
+int
+fluid_midi_file_read_mthd(fluid_midi_file *mf)
+{
+ char mthd[15];
+ if (fluid_midi_file_read(mf, mthd, 14) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+ if ((FLUID_STRNCMP(mthd, "MThd", 4) != 0) || (mthd[7] != 6)
+ || (mthd[9] > 2)) {
+ FLUID_LOG(FLUID_ERR,
+ "Doesn't look like a MIDI file: invalid MThd header");
+ return FLUID_FAILED;
+ }
+ mf->type = mthd[9];
+ mf->ntracks = (unsigned) mthd[11];
+ mf->ntracks += (unsigned int) (mthd[10]) << 16;
+ if ((mthd[12]) < 0) {
+ mf->uses_smpte = 1;
+ mf->smpte_fps = -mthd[12];
+ mf->smpte_res = (unsigned) mthd[13];
+ FLUID_LOG(FLUID_ERR, "File uses SMPTE timing -- Not implemented yet");
+ return FLUID_FAILED;
+ } else {
+ mf->uses_smpte = 0;
+ mf->division = (mthd[12] << 8) | (mthd[13] & 0xff);
+ FLUID_LOG(FLUID_DBG, "Division=%d", mf->division);
+ }
+ return FLUID_OK;
+}
+
+/*
+ * fluid_midi_file_load_tracks
+ */
+int
+fluid_midi_file_load_tracks(fluid_midi_file *mf, fluid_player_t *player)
+{
+ int i;
+ for (i = 0; i < mf->ntracks; i++) {
+ if (fluid_midi_file_read_track(mf, player, i) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+ }
+ return FLUID_OK;
+}
+
+/*
+ * fluid_isasciistring
+ */
+int
+fluid_isasciistring(char *s)
+{
+ int i;
+ int len = (int) FLUID_STRLEN(s);
+ for (i = 0; i < len; i++) {
+ if (!fluid_isascii(s[i])) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/*
+ * fluid_getlength
+ */
+long
+fluid_getlength(unsigned char *s)
+{
+ long i = 0;
+ i = s[3] | (s[2] << 8) | (s[1] << 16) | (s[0] << 24);
+ return i;
+}
+
+/*
+ * fluid_midi_file_read_tracklen
+ */
+int
+fluid_midi_file_read_tracklen(fluid_midi_file *mf)
+{
+ unsigned char length[5];
+ if (fluid_midi_file_read(mf, length, 4) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+ mf->tracklen = fluid_getlength(length);
+ mf->trackpos = 0;
+ mf->eot = 0;
+ return FLUID_OK;
+}
+
+/*
+ * fluid_midi_file_eot
+ */
+int
+fluid_midi_file_eot(fluid_midi_file *mf)
+{
+#if DEBUG
+ if (mf->trackpos > mf->tracklen) {
+ printf("track overrun: %d > %d\n", mf->trackpos, mf->tracklen);
+ }
+#endif
+ return mf->eot || (mf->trackpos >= mf->tracklen);
+}
+
+/*
+ * fluid_midi_file_read_track
+ */
+int
+fluid_midi_file_read_track(fluid_midi_file *mf, fluid_player_t *player, int num)
+{
+ fluid_track_t *track;
+ unsigned char id[5], length[5];
+ int found_track = 0;
+ int skip;
+
+ if (fluid_midi_file_read(mf, id, 4) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+ id[4] = '\0';
+ mf->dtime = 0;
+
+ while (!found_track) {
+
+ if (fluid_isasciistring((char *) id) == 0) {
+ FLUID_LOG(FLUID_ERR,
+ "An non-ascii track header found, corrupt file");
+ return FLUID_FAILED;
+
+ } else if (strcmp((char *) id, "MTrk") == 0) {
+
+ found_track = 1;
+
+ if (fluid_midi_file_read_tracklen(mf) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+
+ track = new_fluid_track(num);
+ if (track == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ return FLUID_FAILED;
+ }
+
+ while (!fluid_midi_file_eot(mf)) {
+ if (fluid_midi_file_read_event(mf, track) != FLUID_OK) {
+ delete_fluid_track(track);
+ return FLUID_FAILED;
+ }
+ }
+
+ /* Skip remaining track data, if any */
+ if (mf->trackpos < mf->tracklen)
+ fluid_midi_file_skip(mf, mf->tracklen - mf->trackpos);
+
+ fluid_player_add_track(player, track);
+
+ } else {
+ found_track = 0;
+ if (fluid_midi_file_read(mf, length, 4) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+ skip = fluid_getlength(length);
+ /* fseek(mf->fp, skip, SEEK_CUR); */
+ if (fluid_midi_file_skip(mf, skip) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+ }
+ }
+ if (fluid_midi_file_eof(mf)) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+ return FLUID_OK;
+}
+
+/*
+ * fluid_midi_file_read_varlen
+ */
+int
+fluid_midi_file_read_varlen(fluid_midi_file *mf)
+{
+ int i;
+ int c;
+ mf->varlen = 0;
+ for (i = 0;; i++) {
+ if (i == 4) {
+ FLUID_LOG(FLUID_ERR, "Invalid variable length number");
+ return FLUID_FAILED;
+ }
+ c = fluid_midi_file_getc(mf);
+ if (c < 0) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+ if (c & 0x80) {
+ mf->varlen |= (int) (c & 0x7F);
+ mf->varlen <<= 7;
+ } else {
+ mf->varlen += c;
+ break;
+ }
+ }
+ return FLUID_OK;
+}
+
+/*
+ * fluid_midi_file_read_event
+ */
+int
+fluid_midi_file_read_event(fluid_midi_file *mf, fluid_track_t *track)
+{
+ int status;
+ int type;
+ int tempo;
+ unsigned char *metadata = NULL;
+ unsigned char *dyn_buf = NULL;
+ unsigned char static_buf[256];
+ int nominator, denominator, clocks, notes;
+ fluid_midi_event_t *evt;
+ int channel = 0;
+ int param1 = 0;
+ int param2 = 0;
+ int size;
+
+ /* read the delta-time of the event */
+ if (fluid_midi_file_read_varlen(mf) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+ mf->dtime += mf->varlen;
+
+ /* read the status byte */
+ status = fluid_midi_file_getc(mf);
+ if (status < 0) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+
+ /* not a valid status byte: use the running status instead */
+ if ((status & 0x80) == 0) {
+ if ((mf->running_status & 0x80) == 0) {
+ FLUID_LOG(FLUID_ERR, "Undefined status and invalid running status");
+ return FLUID_FAILED;
+ }
+ fluid_midi_file_push(mf, status);
+ status = mf->running_status;
+ }
+
+ /* check what message we have */
+
+ mf->running_status = status;
+
+ if ((status == MIDI_SYSEX)) { /* system exclusif */
+ /* read the length of the message */
+ if (fluid_midi_file_read_varlen(mf) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+
+ if (mf->varlen) {
+ FLUID_LOG(FLUID_DBG, "%s: %d: alloc metadata, len = %d", __FILE__,
+ __LINE__, mf->varlen);
+ metadata = FLUID_MALLOC(mf->varlen + 1);
+
+ if (metadata == NULL) {
+ FLUID_LOG(FLUID_PANIC, "Out of memory");
+ return FLUID_FAILED;
+ }
+
+ /* read the data of the message */
+ if (fluid_midi_file_read(mf, metadata, mf->varlen) != FLUID_OK) {
+ FLUID_FREE (metadata);
+ return FLUID_FAILED;
+ }
+
+ evt = new_fluid_midi_event();
+ if (evt == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ FLUID_FREE (metadata);
+ return FLUID_FAILED;
+ }
+
+ evt->dtime = mf->dtime;
+ size = mf->varlen;
+
+ if (metadata[mf->varlen - 1] == MIDI_EOX)
+ size--;
+
+ /* Add SYSEX event and indicate that its dynamically allocated and should be freed with event */
+ fluid_midi_event_set_sysex(evt, metadata, size, TRUE);
+ fluid_track_add_event(track, evt);
+ mf->dtime = 0;
+ }
+
+ return FLUID_OK;
+
+ } else if (status == MIDI_META_EVENT) { /* meta events */
+
+ int result = FLUID_OK;
+
+ /* get the type of the meta message */
+ type = fluid_midi_file_getc(mf);
+ if (type < 0) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+
+ /* get the length of the data part */
+ if (fluid_midi_file_read_varlen(mf) != FLUID_OK) {
+ return FLUID_FAILED;
+ }
+
+ if (mf->varlen < 255) {
+ metadata = &static_buf[0];
+ } else {
+ FLUID_LOG(FLUID_DBG, "%s: %d: alloc metadata, len = %d", __FILE__,
+ __LINE__, mf->varlen);
+ dyn_buf = FLUID_MALLOC(mf->varlen + 1);
+ if (dyn_buf == NULL) {
+ FLUID_LOG(FLUID_PANIC, "Out of memory");
+ return FLUID_FAILED;
+ }
+ metadata = dyn_buf;
+ }
+
+ /* read the data */
+ if (mf->varlen) {
+ if (fluid_midi_file_read(mf, metadata, mf->varlen) != FLUID_OK) {
+ if (dyn_buf) {
+ FLUID_FREE(dyn_buf);
+ }
+ return FLUID_FAILED;
+ }
+ }
+
+ /* handle meta data */
+ switch (type) {
+
+ case MIDI_COPYRIGHT:
+ metadata[mf->varlen] = 0;
+ break;
+
+ case MIDI_TRACK_NAME:
+ metadata[mf->varlen] = 0;
+ fluid_track_set_name(track, (char *) metadata);
+ break;
+
+ case MIDI_INST_NAME:
+ metadata[mf->varlen] = 0;
+ break;
+
+ case MIDI_LYRIC:
+ break;
+
+ case MIDI_MARKER:
+ break;
+
+ case MIDI_CUE_POINT:
+ break; /* don't care much for text events */
+
+ case MIDI_EOT:
+ if (mf->varlen != 0) {
+ FLUID_LOG(FLUID_ERR, "Invalid length for EndOfTrack event");
+ result = FLUID_FAILED;
+ break;
+ }
+ mf->eot = 1;
+ evt = new_fluid_midi_event();
+ if (evt == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ result = FLUID_FAILED;
+ break;
+ }
+ evt->dtime = mf->dtime;
+ evt->type = MIDI_EOT;
+ fluid_track_add_event(track, evt);
+ mf->dtime = 0;
+ break;
+
+ case MIDI_SET_TEMPO:
+ if (mf->varlen != 3) {
+ FLUID_LOG(FLUID_ERR,
+ "Invalid length for SetTempo meta event");
+ result = FLUID_FAILED;
+ break;
+ }
+ tempo = (metadata[0] << 16) + (metadata[1] << 8) + metadata[2];
+ evt = new_fluid_midi_event();
+ if (evt == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ result = FLUID_FAILED;
+ break;
+ }
+ evt->dtime = mf->dtime;
+ evt->type = MIDI_SET_TEMPO;
+ evt->channel = 0;
+ evt->param1 = tempo;
+ evt->param2 = 0;
+ fluid_track_add_event(track, evt);
+ mf->dtime = 0;
+ break;
+
+ case MIDI_SMPTE_OFFSET:
+ if (mf->varlen != 5) {
+ FLUID_LOG(FLUID_ERR,
+ "Invalid length for SMPTE Offset meta event");
+ result = FLUID_FAILED;
+ break;
+ }
+ break; /* we don't use smtp */
+
+ case MIDI_TIME_SIGNATURE:
+ if (mf->varlen != 4) {
+ FLUID_LOG(FLUID_ERR,
+ "Invalid length for TimeSignature meta event");
+ result = FLUID_FAILED;
+ break;
+ }
+ nominator = metadata[0];
+ denominator = pow(2.0, (double) metadata[1]);
+ clocks = metadata[2];
+ notes = metadata[3];
+
+ FLUID_LOG(FLUID_DBG,
+ "signature=%d/%d, metronome=%d, 32nd-notes=%d",
+ nominator, denominator, clocks, notes);
+
+ break;
+
+ case MIDI_KEY_SIGNATURE:
+ if (mf->varlen != 2) {
+ FLUID_LOG(FLUID_ERR,
+ "Invalid length for KeySignature meta event");
+ result = FLUID_FAILED;
+ break;
+ }
+ /* We don't care about key signatures anyway */
+ /* sf = metadata[0];
+ mi = metadata[1]; */
+ break;
+
+ case MIDI_SEQUENCER_EVENT:
+ break;
+
+ default:
+ break;
+ }
+
+ if (dyn_buf) {
+ FLUID_LOG(FLUID_DBG, "%s: %d: free metadata", __FILE__, __LINE__);
+ FLUID_FREE(dyn_buf);
+ }
+
+ return result;
+
+ } else { /* channel messages */
+
+ type = status & 0xf0;
+ channel = status & 0x0f;
+
+ /* all channel message have at least 1 byte of associated data */
+ if ((param1 = fluid_midi_file_getc(mf)) < 0) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+
+ switch (type) {
+
+ case NOTE_ON:
+ if ((param2 = fluid_midi_file_getc(mf)) < 0) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+ break;
+
+ case NOTE_OFF:
+ if ((param2 = fluid_midi_file_getc(mf)) < 0) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+ break;
+
+ case KEY_PRESSURE:
+ if ((param2 = fluid_midi_file_getc(mf)) < 0) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+ break;
+
+ case CONTROL_CHANGE:
+ if ((param2 = fluid_midi_file_getc(mf)) < 0) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+ break;
+
+ case PROGRAM_CHANGE:
+ break;
+
+ case CHANNEL_PRESSURE:
+ break;
+
+ case PITCH_BEND:
+ if ((param2 = fluid_midi_file_getc(mf)) < 0) {
+ FLUID_LOG(FLUID_ERR, "Unexpected end of file");
+ return FLUID_FAILED;
+ }
+
+ param1 = ((param2 & 0x7f) << 7) | (param1 & 0x7f);
+ param2 = 0;
+ break;
+
+ default:
+ /* Can't possibly happen !? */
+ FLUID_LOG(FLUID_ERR, "Unrecognized MIDI event");
+ return FLUID_FAILED;
+ }
+ evt = new_fluid_midi_event();
+ if (evt == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ return FLUID_FAILED;
+ }
+ evt->dtime = mf->dtime;
+ evt->type = type;
+ evt->channel = channel;
+ evt->param1 = param1;
+ evt->param2 = param2;
+ fluid_track_add_event(track, evt);
+ mf->dtime = 0;
+ }
+ return FLUID_OK;
+}
+
+/*
+ * fluid_midi_file_get_division
+ */
+int
+fluid_midi_file_get_division(fluid_midi_file *midifile)
+{
+ return midifile->division;
+}
+
+/******************************************************
+ *
+ * fluid_track_t
+ */
+
+/**
+ * Create a MIDI event structure.
+ * @return New MIDI event structure or NULL when out of memory.
+ */
+fluid_midi_event_t *
+new_fluid_midi_event ()
+{
+ fluid_midi_event_t* evt;
+ evt = FLUID_NEW(fluid_midi_event_t);
+ if (evt == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ return NULL;
+ }
+ evt->dtime = 0;
+ evt->type = 0;
+ evt->channel = 0;
+ evt->param1 = 0;
+ evt->param2 = 0;
+ evt->next = NULL;
+ evt->paramptr = NULL;
+ return evt;
+}
+
+/**
+ * Delete MIDI event structure.
+ * @param evt MIDI event structure
+ * @return Always returns #FLUID_OK
+ */
+int
+delete_fluid_midi_event(fluid_midi_event_t *evt)
+{
+ fluid_midi_event_t *temp;
+
+ while (evt) {
+ temp = evt->next;
+
+ /* Dynamic SYSEX event? - free (param2 indicates if dynamic) */
+ if (evt->type == MIDI_SYSEX && evt->paramptr && evt->param2)
+ FLUID_FREE (evt->paramptr);
+
+ FLUID_FREE(evt);
+ evt = temp;
+ }
+ return FLUID_OK;
+}
+
+/**
+ * Get the event type field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @return Event type field (MIDI status byte without channel)
+ */
+int
+fluid_midi_event_get_type(fluid_midi_event_t *evt)
+{
+ return evt->type;
+}
+
+/**
+ * Set the event type field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @param type Event type field (MIDI status byte without channel)
+ * @return Always returns #FLUID_OK
+ */
+int
+fluid_midi_event_set_type(fluid_midi_event_t *evt, int type)
+{
+ evt->type = type;
+ return FLUID_OK;
+}
+
+/**
+ * Get the channel field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @return Channel field
+ */
+int
+fluid_midi_event_get_channel(fluid_midi_event_t *evt)
+{
+ return evt->channel;
+}
+
+/**
+ * Set the channel field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @param chan MIDI channel field
+ * @return Always returns #FLUID_OK
+ */
+int
+fluid_midi_event_set_channel(fluid_midi_event_t *evt, int chan)
+{
+ evt->channel = chan;
+ return FLUID_OK;
+}
+
+/**
+ * Get the key field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @return MIDI note number (0-127)
+ */
+int
+fluid_midi_event_get_key(fluid_midi_event_t *evt)
+{
+ return evt->param1;
+}
+
+/**
+ * Set the key field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @param v MIDI note number (0-127)
+ * @return Always returns #FLUID_OK
+ */
+int
+fluid_midi_event_set_key(fluid_midi_event_t *evt, int v)
+{
+ evt->param1 = v;
+ return FLUID_OK;
+}
+
+/**
+ * Get the velocity field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @return MIDI velocity number (0-127)
+ */
+int
+fluid_midi_event_get_velocity(fluid_midi_event_t *evt)
+{
+ return evt->param2;
+}
+
+/**
+ * Set the velocity field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @param v MIDI velocity value
+ * @return Always returns #FLUID_OK
+ */
+int
+fluid_midi_event_set_velocity(fluid_midi_event_t *evt, int v)
+{
+ evt->param2 = v;
+ return FLUID_OK;
+}
+
+/**
+ * Get the control number of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @return MIDI control number
+ */
+int
+fluid_midi_event_get_control(fluid_midi_event_t *evt)
+{
+ return evt->param1;
+}
+
+/**
+ * Set the control field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @param v MIDI control number
+ * @return Always returns #FLUID_OK
+ */
+int
+fluid_midi_event_set_control(fluid_midi_event_t *evt, int v)
+{
+ evt->param1 = v;
+ return FLUID_OK;
+}
+
+/**
+ * Get the value field from a MIDI event structure.
+ * @param evt MIDI event structure
+ * @return Value field
+ */
+int
+fluid_midi_event_get_value(fluid_midi_event_t *evt)
+{
+ return evt->param2;
+}
+
+/**
+ * Set the value field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @param v Value to assign
+ * @return Always returns #FLUID_OK
+ */
+int
+fluid_midi_event_set_value(fluid_midi_event_t *evt, int v)
+{
+ evt->param2 = v;
+ return FLUID_OK;
+}
+
+/**
+ * Get the program field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @return MIDI program number (0-127)
+ */
+int
+fluid_midi_event_get_program(fluid_midi_event_t *evt)
+{
+ return evt->param1;
+}
+
+/**
+ * Set the program field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @param val MIDI program number (0-127)
+ * @return Always returns #FLUID_OK
+ */
+int
+fluid_midi_event_set_program(fluid_midi_event_t *evt, int val)
+{
+ evt->param1 = val;
+ return FLUID_OK;
+}
+
+/**
+ * Get the pitch field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @return Pitch value (14 bit value, 0-16383, 8192 is center)
+ */
+int
+fluid_midi_event_get_pitch(fluid_midi_event_t *evt)
+{
+ return evt->param1;
+}
+
+/**
+ * Set the pitch field of a MIDI event structure.
+ * @param evt MIDI event structure
+ * @param val Pitch value (14 bit value, 0-16383, 8192 is center)
+ * @return Always returns FLUID_OK
+ */
+int
+fluid_midi_event_set_pitch(fluid_midi_event_t *evt, int val)
+{
+ evt->param1 = val;
+ return FLUID_OK;
+}
+
+/**
+ * Assign sysex data to a MIDI event structure.
+ * @param evt MIDI event structure
+ * @param data Pointer to SYSEX data
+ * @param size Size of SYSEX data
+ * @param dynamic TRUE if the SYSEX data has been dynamically allocated and
+ * should be freed when the event is freed (only applies if event gets destroyed
+ * with delete_fluid_midi_event())
+ * @return Always returns #FLUID_OK
+ *
+ * NOTE: Unlike the other event assignment functions, this one sets evt->type.
+ */
+int
+fluid_midi_event_set_sysex(fluid_midi_event_t *evt, void *data, int size, int dynamic)
+{
+ evt->type = MIDI_SYSEX;
+ evt->paramptr = data;
+ evt->param1 = size;
+ evt->param2 = dynamic;
+ return FLUID_OK;
+}
+
+/******************************************************
+ *
+ * fluid_track_t
+ */
+
+/*
+ * new_fluid_track
+ */
+fluid_track_t *
+new_fluid_track(int num)
+{
+ fluid_track_t *track;
+ track = FLUID_NEW(fluid_track_t);
+ if (track == NULL) {
+ return NULL;
+ }
+ track->name = NULL;
+ track->num = num;
+ track->first = NULL;
+ track->cur = NULL;
+ track->last = NULL;
+ track->ticks = 0;
+ return track;
+}
+
+/*
+ * delete_fluid_track
+ */
+int
+delete_fluid_track(fluid_track_t *track)
+{
+ if (track->name != NULL) {
+ FLUID_FREE(track->name);
+ }
+ if (track->first != NULL) {
+ delete_fluid_midi_event(track->first);
+ }
+ FLUID_FREE(track);
+ return FLUID_OK;
+}
+
+/*
+ * fluid_track_set_name
+ */
+int
+fluid_track_set_name(fluid_track_t *track, char *name)
+{
+ int len;
+ if (track->name != NULL) {
+ FLUID_FREE(track->name);
+ }
+ if (name == NULL) {
+ track->name = NULL;
+ return FLUID_OK;
+ }
+ len = FLUID_STRLEN(name);
+ track->name = FLUID_MALLOC(len + 1);
+ if (track->name == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ return FLUID_FAILED;
+ }
+ FLUID_STRCPY(track->name, name);
+ return FLUID_OK;
+}
+
+/*
+ * fluid_track_get_name
+ */
+char *
+fluid_track_get_name(fluid_track_t *track)
+{
+ return track->name;
+}
+
+/*
+ * fluid_track_get_duration
+ */
+int
+fluid_track_get_duration(fluid_track_t *track)
+{
+ int time = 0;
+ fluid_midi_event_t *evt = track->first;
+ while (evt != NULL) {
+ time += evt->dtime;
+ evt = evt->next;
+ }
+ return time;
+}
+
+#if 0
+/*
+ * fluid_track_count_events
+ */
+static int
+fluid_track_count_events(fluid_track_t *track, int *on, int *off)
+{
+ fluid_midi_event_t *evt = track->first;
+ while (evt != NULL) {
+ if (evt->type == NOTE_ON) {
+ (*on)++;
+ } else if (evt->type == NOTE_OFF) {
+ (*off)++;
+ }
+ evt = evt->next;
+ }
+ return FLUID_OK;
+}
+#endif
+
+/*
+ * fluid_track_add_event
+ */
+int
+fluid_track_add_event(fluid_track_t *track, fluid_midi_event_t *evt)
+{
+ evt->next = NULL;
+ if (track->first == NULL) {
+ track->first = evt;
+ track->cur = evt;
+ track->last = evt;
+ } else {
+ track->last->next = evt;
+ track->last = evt;
+ }
+ return FLUID_OK;
+}
+
+/*
+ * fluid_track_first_event
+ */
+fluid_midi_event_t *
+fluid_track_first_event(fluid_track_t *track)
+{
+ track->cur = track->first;
+ return track->cur;
+}
+
+/*
+ * fluid_track_next_event
+ */
+fluid_midi_event_t *
+fluid_track_next_event(fluid_track_t *track)
+{
+ if (track->cur != NULL) {
+ track->cur = track->cur->next;
+ }
+ return track->cur;
+}
+
+/*
+ * fluid_track_reset
+ */
+int
+fluid_track_reset(fluid_track_t *track)
+{
+ track->ticks = 0;
+ track->cur = track->first;
+ return FLUID_OK;
+}
+
+/*
+ * fluid_track_send_events
+ */
+int
+fluid_track_send_events(fluid_track_t *track,
+ fluid_synth_t *synth,
+ fluid_player_t *player,
+ unsigned int ticks)
+{
+ int status = FLUID_OK;
+ fluid_midi_event_t *event;
+
+ while (1) {
+
+ event = track->cur;
+ if (event == NULL) {
+ return status;
+ }
+
+ /* printf("track=%02d\tticks=%05u\ttrack=%05u\tdtime=%05u\tnext=%05u\n", */
+ /* track->num, */
+ /* ticks, */
+ /* track->ticks, */
+ /* event->dtime, */
+ /* track->ticks + event->dtime); */
+
+ if (track->ticks + event->dtime > ticks) {
+ return status;
+ }
+
+ track->ticks += event->dtime;
+
+ if (!player || event->type == MIDI_EOT) {
+ }
+ else if (event->type == MIDI_SET_TEMPO) {
+ fluid_player_set_midi_tempo(player, event->param1);
+ }
+ else {
+ if (player->playback_callback)
+ player->playback_callback(player->playback_userdata, event);
+ }
+
+ fluid_track_next_event(track);
+
+ }
+ return status;
+}
+
+/******************************************************
+ *
+ * fluid_player
+ */
+
+/**
+ * Create a new MIDI player.
+ * @param synth Fluid synthesizer instance to create player for
+ * @return New MIDI player instance or NULL on error (out of memory)
+ */
+fluid_player_t *
+new_fluid_player(fluid_synth_t *synth)
+{
+ int i;
+ fluid_player_t *player;
+ player = FLUID_NEW(fluid_player_t);
+ if (player == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ return NULL;
+ }
+ player->status = FLUID_PLAYER_READY;
+ player->loop = 1;
+ player->ntracks = 0;
+ for (i = 0; i < MAX_NUMBER_OF_TRACKS; i++) {
+ player->track[i] = NULL;
+ }
+ player->synth = synth;
+ player->system_timer = NULL;
+ player->sample_timer = NULL;
+ player->playlist = NULL;
+ player->currentfile = NULL;
+ player->division = 0;
+ player->send_program_change = 1;
+ player->miditempo = 480000;
+ player->deltatime = 4.0;
+ player->cur_msec = 0;
+ player->cur_ticks = 0;
+ fluid_player_set_playback_callback(player, fluid_synth_handle_midi_event, synth);
+
+ player->use_system_timer = fluid_settings_str_equal(synth->settings,
+ "player.timing-source", "system");
+
+ fluid_settings_getint(synth->settings, "player.reset-synth", &i);
+ player->reset_synth_between_songs = i;
+
+ return player;
+}
+
+/**
+ * Delete a MIDI player instance.
+ * @param player MIDI player instance
+ * @return Always returns #FLUID_OK
+ */
+int
+delete_fluid_player(fluid_player_t *player)
+{
+ fluid_list_t *q;
+ fluid_playlist_item* pi;
+
+ if (player == NULL) {
+ return FLUID_OK;
+ }
+ fluid_player_stop(player);
+ fluid_player_reset(player);
+
+ while (player->playlist != NULL) {
+ q = player->playlist->next;
+ pi = (fluid_playlist_item*) player->playlist->data;
+ FLUID_FREE(pi->filename);
+ FLUID_FREE(pi->buffer);
+ FLUID_FREE(pi);
+ delete1_fluid_list(player->playlist);
+ player->playlist = q;
+ }
+
+ FLUID_FREE(player);
+ return FLUID_OK;
+}
+
+/**
+ * Registers settings related to the MIDI player
+ */
+void
+fluid_player_settings(fluid_settings_t *settings)
+{
+ /* player.timing-source can be either "system" (use system timer)
+ or "sample" (use timer based on number of written samples) */
+ fluid_settings_register_str(settings, "player.timing-source", "sample", 0,
+ NULL, NULL);
+ fluid_settings_add_option(settings, "player.timing-source", "sample");
+ fluid_settings_add_option(settings, "player.timing-source", "system");
+
+ /* Selects whether the player should reset the synth between songs, or not. */
+ fluid_settings_register_int(settings, "player.reset-synth", 1, 0, 1,
+ FLUID_HINT_TOGGLED, NULL, NULL);
+}
+
+
+int
+fluid_player_reset(fluid_player_t *player)
+{
+ int i;
+
+ for (i = 0; i < MAX_NUMBER_OF_TRACKS; i++) {
+ if (player->track[i] != NULL) {
+ delete_fluid_track(player->track[i]);
+ player->track[i] = NULL;
+ }
+ }
+ /* player->current_file = NULL; */
+ /* player->status = FLUID_PLAYER_READY; */
+ /* player->loop = 1; */
+ player->ntracks = 0;
+ player->division = 0;
+ player->send_program_change = 1;
+ player->miditempo = 480000;
+ player->deltatime = 4.0;
+ return 0;
+}
+
+/*
+ * fluid_player_add_track
+ */
+int
+fluid_player_add_track(fluid_player_t *player, fluid_track_t *track)
+{
+ if (player->ntracks < MAX_NUMBER_OF_TRACKS) {
+ player->track[player->ntracks++] = track;
+ return FLUID_OK;
+ } else {
+ return FLUID_FAILED;
+ }
+}
+
+/*
+ * fluid_player_count_tracks
+ */
+int
+fluid_player_count_tracks(fluid_player_t *player)
+{
+ return player->ntracks;
+}
+
+/*
+ * fluid_player_get_track
+ */
+fluid_track_t *
+fluid_player_get_track(fluid_player_t *player, int i)
+{
+ if ((i >= 0) && (i < MAX_NUMBER_OF_TRACKS)) {
+ return player->track[i];
+ } else {
+ return NULL;
+ }
+}
+
+/**
+ * Change the MIDI callback function. This is usually set to
+ * fluid_synth_handle_midi_event, but can optionally be changed
+ * to a user-defined function instead, for intercepting all MIDI
+ * messages sent to the synth. You can also use a midi router as
+ * the callback function to modify the MIDI messages before sending
+ * them to the synth.
+ * @param player MIDI player instance
+ * @param handler Pointer to callback function
+ * @param handler_data Parameter sent to the callback function
+ * @returns FLUID_OK
+ * @since 1.1.4
+ */
+int
+fluid_player_set_playback_callback(fluid_player_t* player,
+ handle_midi_event_func_t handler, void* handler_data)
+{
+ player->playback_callback = handler;
+ player->playback_userdata = handler_data;
+ return FLUID_OK;
+}
+
+/**
+ * Add a MIDI file to a player queue.
+ * @param player MIDI player instance
+ * @param midifile File name of the MIDI file to add
+ * @return #FLUID_OK or #FLUID_FAILED
+ */
+int
+fluid_player_add(fluid_player_t *player, const char *midifile)
+{
+ fluid_playlist_item *pi = FLUID_MALLOC(sizeof(fluid_playlist_item));
+ char* f = FLUID_STRDUP(midifile);
+ if (!pi || !f) {
+ FLUID_FREE(pi);
+ FLUID_FREE(f);
+ FLUID_LOG(FLUID_PANIC, "Out of memory");
+ return FLUID_FAILED;
+ }
+
+ pi->filename = f;
+ pi->buffer = NULL;
+ pi->buffer_len = 0;
+ player->playlist = fluid_list_append(player->playlist, pi);
+ return FLUID_OK;
+}
+
+/**
+ * Add a MIDI file to a player queue, from a buffer in memory.
+ * @param player MIDI player instance
+ * @param buffer Pointer to memory containing the bytes of a complete MIDI
+ * file. The data is copied, so the caller may free or modify it immediately
+ * without affecting the playlist.
+ * @param len Length of the buffer, in bytes.
+ * @return #FLUID_OK or #FLUID_FAILED
+ */
+int
+fluid_player_add_mem(fluid_player_t* player, const void *buffer, size_t len)
+{
+ /* Take a copy of the buffer, so the caller can free immediately. */
+ fluid_playlist_item *pi = FLUID_MALLOC(sizeof(fluid_playlist_item));
+ void *buf_copy = FLUID_MALLOC(len);
+ if (!pi || !buf_copy) {
+ FLUID_FREE(pi);
+ FLUID_FREE(buf_copy);
+ FLUID_LOG(FLUID_PANIC, "Out of memory");
+ return FLUID_FAILED;
+ }
+
+ FLUID_MEMCPY(buf_copy, buffer, len);
+ pi->filename = NULL;
+ pi->buffer = buf_copy;
+ pi->buffer_len = len;
+ player->playlist = fluid_list_append(player->playlist, pi);
+ return FLUID_OK;
+}
+
+/*
+ * fluid_player_load
+ */
+int
+fluid_player_load(fluid_player_t *player, fluid_playlist_item *item)
+{
+ fluid_midi_file *midifile;
+ char* buffer;
+ size_t buffer_length;
+ int buffer_owned;
+
+ if (item->filename != NULL)
+ {
+ fluid_file fp;
+ /* This file is specified by filename; load the file from disk */
+ FLUID_LOG(FLUID_DBG, "%s: %d: Loading midifile %s", __FILE__, __LINE__,
+ item->filename);
+ /* Read the entire contents of the file into the buffer */
+ fp = FLUID_FOPEN(item->filename, "rb");
+ if (fp == NULL) {
+ FLUID_LOG(FLUID_ERR, "Couldn't open the MIDI file");
+ return FLUID_FAILED;
+ }
+ buffer = fluid_file_read_full(fp, &buffer_length);
+ if (buffer == NULL)
+ {
+ FLUID_FCLOSE(fp);
+ return FLUID_FAILED;
+ }
+ buffer_owned = 1;
+ FLUID_FCLOSE(fp);
+ }
+ else
+ {
+ /* This file is specified by a pre-loaded buffer; load from memory */
+ FLUID_LOG(FLUID_DBG, "%s: %d: Loading midifile from memory (%p)",
+ __FILE__, __LINE__, item->buffer);
+ buffer = (char *) item->buffer;
+ buffer_length = item->buffer_len;
+ /* Do not free the buffer (it is owned by the playlist) */
+ buffer_owned = 0;
+ }
+
+ midifile = new_fluid_midi_file(buffer, buffer_length);
+ if (midifile == NULL) {
+ if (buffer_owned) {
+ FLUID_FREE(buffer);
+ }
+ return FLUID_FAILED;
+ }
+ player->division = fluid_midi_file_get_division(midifile);
+ fluid_player_set_midi_tempo(player, player->miditempo); // Update deltatime
+ /*FLUID_LOG(FLUID_DBG, "quarter note division=%d\n", player->division); */
+
+ if (fluid_midi_file_load_tracks(midifile, player) != FLUID_OK) {
+ if (buffer_owned) {
+ FLUID_FREE(buffer);
+ }
+ delete_fluid_midi_file(midifile);
+ return FLUID_FAILED;
+ }
+ delete_fluid_midi_file(midifile);
+ if (buffer_owned) {
+ FLUID_FREE(buffer);
+ }
+ return FLUID_OK;
+}
+
+static void
+fluid_player_advancefile(fluid_player_t *player)
+{
+ if (player->playlist == NULL) {
+ return; /* No files to play */
+ }
+ if (player->currentfile != NULL) {
+ player->currentfile = fluid_list_next(player->currentfile);
+ }
+ if (player->currentfile == NULL) {
+ if (player->loop == 0) {
+ return; /* We're done playing */
+ }
+ if (player->loop > 0) {
+ player->loop--;
+ }
+ player->currentfile = player->playlist;
+ }
+}
+
+static void
+fluid_player_playlist_load(fluid_player_t *player, unsigned int msec)
+{
+ fluid_playlist_item* current_playitem;
+ int i;
+
+ do {
+ fluid_player_advancefile(player);
+ if (player->currentfile == NULL) {
+ /* Failed to find next song, probably since we're finished */
+ player->status = FLUID_PLAYER_DONE;
+ return;
+ }
+
+ fluid_player_reset(player);
+ current_playitem = (fluid_playlist_item *) player->currentfile->data;
+ } while (fluid_player_load(player, current_playitem) != FLUID_OK);
+
+ /* Successfully loaded midi file */
+
+ player->begin_msec = msec;
+ player->start_msec = msec;
+ player->start_ticks = 0;
+ player->cur_ticks = 0;
+
+ if (player->reset_synth_between_songs) {
+ fluid_synth_system_reset(player->synth);
+ }
+
+ for (i = 0; i < player->ntracks; i++) {
+ if (player->track[i] != NULL) {
+ fluid_track_reset(player->track[i]);
+ }
+ }
+}
+
+
+/*
+ * fluid_player_callback
+ */
+int
+fluid_player_callback(void *data, unsigned int msec)
+{
+ int i;
+ int loadnextfile;
+ int status = FLUID_PLAYER_DONE;
+ fluid_player_t *player;
+ fluid_synth_t *synth;
+ player = (fluid_player_t *) data;
+ synth = player->synth;
+
+ loadnextfile = player->currentfile == NULL ? 1 : 0;
+ do {
+ if (loadnextfile) {
+ loadnextfile = 0;
+ fluid_player_playlist_load(player, msec);
+ if (player->currentfile == NULL) {
+ return 0;
+ }
+ }
+
+ player->cur_msec = msec;
+ player->cur_ticks = (player->start_ticks
+ + (int) ((double) (player->cur_msec - player->start_msec)
+ / player->deltatime));
+
+ for (i = 0; i < player->ntracks; i++) {
+ if (!fluid_track_eot(player->track[i])) {
+ status = FLUID_PLAYER_PLAYING;
+ if (fluid_track_send_events(player->track[i], synth, player,
+ player->cur_ticks) != FLUID_OK) {
+ /* */
+ }
+ }
+ }
+
+ if (status == FLUID_PLAYER_DONE) {
+ FLUID_LOG(FLUID_DBG, "%s: %d: Duration=%.3f sec", __FILE__,
+ __LINE__, (msec - player->begin_msec) / 1000.0);
+ loadnextfile = 1;
+ }
+ } while (loadnextfile);
+
+ player->status = status;
+
+ return 1;
+}
+
+/**
+ * Activates play mode for a MIDI player if not already playing.
+ * @param player MIDI player instance
+ * @return #FLUID_OK on success, #FLUID_FAILED otherwise
+ */
+int
+fluid_player_play(fluid_player_t *player)
+{
+ if (player->status == FLUID_PLAYER_PLAYING) {
+ return FLUID_OK;
+ }
+
+ if (player->playlist == NULL) {
+ return FLUID_OK;
+ }
+
+ player->status = FLUID_PLAYER_PLAYING;
+
+ if (player->use_system_timer) {
+ player->system_timer = new_fluid_timer((int) player->deltatime,
+ fluid_player_callback, (void *) player, TRUE, FALSE, TRUE);
+ if (player->system_timer == NULL) {
+ return FLUID_FAILED;
+ }
+ } else {
+ player->sample_timer = new_fluid_sample_timer(player->synth,
+ fluid_player_callback, (void *) player);
+
+ if (player->sample_timer == NULL) {
+ return FLUID_FAILED;
+ }
+ }
+ return FLUID_OK;
+}
+
+/**
+ * Stops a MIDI player.
+ * @param player MIDI player instance
+ * @return Always returns #FLUID_OK
+ */
+int
+fluid_player_stop(fluid_player_t *player)
+{
+ if (player->system_timer != NULL) {
+ delete_fluid_timer(player->system_timer);
+ }
+ if (player->sample_timer != NULL) {
+ delete_fluid_sample_timer(player->synth, player->sample_timer);
+ }
+ player->status = FLUID_PLAYER_DONE;
+ player->sample_timer = NULL;
+ player->system_timer = NULL;
+ return FLUID_OK;
+}
+
+/**
+ * Get MIDI player status.
+ * @param player MIDI player instance
+ * @return Player status (#fluid_player_status)
+ * @since 1.1.0
+ */
+int
+fluid_player_get_status(fluid_player_t *player)
+{
+ return player->status;
+}
+
+/**
+ * Enable looping of a MIDI player
+ * @param player MIDI player instance
+ * @param loop Times left to loop the playlist. -1 means loop infinitely.
+ * @return Always returns #FLUID_OK
+ * @since 1.1.0
+ *
+ * For example, if you want to loop the playlist twice, set loop to 2
+ * and call this function before you start the player.
+ */
+int fluid_player_set_loop(fluid_player_t *player, int loop)
+{
+ player->loop = loop;
+ return FLUID_OK;
+}
+
+/**
+ * Set the tempo of a MIDI player.
+ * @param player MIDI player instance
+ * @param tempo Tempo to set playback speed to (in microseconds per quarter note, as per MIDI file spec)
+ * @return Always returns #FLUID_OK
+ */
+int fluid_player_set_midi_tempo(fluid_player_t *player, int tempo)
+{
+ player->miditempo = tempo;
+ player->deltatime = (double) tempo / player->division / 1000.0; /* in milliseconds */
+ player->start_msec = player->cur_msec;
+ player->start_ticks = player->cur_ticks;
+
+ FLUID_LOG(FLUID_DBG,
+ "tempo=%d, tick time=%f msec, cur time=%d msec, cur tick=%d",
+ tempo, player->deltatime, player->cur_msec, player->cur_ticks);
+
+ return FLUID_OK;
+}
+
+/**
+ * Set the tempo of a MIDI player in beats per minute.
+ * @param player MIDI player instance
+ * @param bpm Tempo in beats per minute
+ * @return Always returns #FLUID_OK
+ */
+int
+fluid_player_set_bpm(fluid_player_t *player, int bpm)
+{
+ return fluid_player_set_midi_tempo(player, (int) ((double) 60 * 1e6 / bpm));
+}
+
+/**
+ * Wait for a MIDI player to terminate (when done playing).
+ * @param player MIDI player instance
+ * @return #FLUID_OK on success, #FLUID_FAILED otherwise
+ */
+int
+fluid_player_join(fluid_player_t *player)
+{
+ if (player->system_timer) {
+ return fluid_timer_join(player->system_timer);
+ } else if (player->sample_timer) {
+ /* Busy-wait loop, since there's no thread to wait for... */
+ while (player->status != FLUID_PLAYER_DONE) {
+#if defined(WIN32)
+ Sleep(10);
+#else
+ usleep(10000);
+#endif
+ }
+ }
+ return FLUID_OK;
+}
+
+/************************************************************************
+ * MIDI PARSER
+ *
+ */
+
+/*
+ * new_fluid_midi_parser
+ */
+fluid_midi_parser_t *
+new_fluid_midi_parser ()
+{
+ fluid_midi_parser_t *parser;
+ parser = FLUID_NEW(fluid_midi_parser_t);
+ if (parser == NULL) {
+ FLUID_LOG(FLUID_ERR, "Out of memory");
+ return NULL;
+ }
+ parser->status = 0; /* As long as the status is 0, the parser won't do anything -> no need to initialize all the fields. */
+ return parser;
+}
+
+/*
+ * delete_fluid_midi_parser
+ */
+int
+delete_fluid_midi_parser(fluid_midi_parser_t *parser)
+{
+ FLUID_FREE(parser);
+ return FLUID_OK;
+}
+
+/**
+ * Parse a MIDI stream one character at a time.
+ * @param parser Parser instance
+ * @param c Next character in MIDI stream
+ * @return A parsed MIDI event or NULL if none. Event is internal and should
+ * not be modified or freed and is only valid until next call to this function.
+ */
+fluid_midi_event_t *
+fluid_midi_parser_parse(fluid_midi_parser_t *parser, unsigned char c)
+{
+ fluid_midi_event_t *event;
+
+ /* Real-time messages (0xF8-0xFF) can occur anywhere, even in the middle
+ * of another message. */
+ if (c >= 0xF8) {
+ if (c == MIDI_SYSTEM_RESET) {
+ parser->event.type = c;
+ parser->status = 0; /* clear the status */
+ return &parser->event;
+ }
+
+ return NULL;
+ }
+
+ /* Status byte? - If previous message not yet complete, it is discarded (re-sync). */
+ if (c & 0x80) {
+ /* Any status byte terminates SYSEX messages (not just 0xF7) */
+ if (parser->status == MIDI_SYSEX && parser->nr_bytes > 0) {
+ event = &parser->event;
+ fluid_midi_event_set_sysex(event, parser->data, parser->nr_bytes,
+ FALSE);
+ } else
+ event = NULL;
+
+ if (c < 0xF0) /* Voice category message? */
+ {
+ parser->channel = c & 0x0F;
+ parser->status = c & 0xF0;
+
+ /* The event consumes x bytes of data... (subtract 1 for the status byte) */
+ parser->nr_bytes_total = fluid_midi_event_length(parser->status)
+ - 1;
+
+ parser->nr_bytes = 0; /* 0 bytes read so far */
+ } else if (c == MIDI_SYSEX) {
+ parser->status = MIDI_SYSEX;
+ parser->nr_bytes = 0;
+ } else
+ parser->status = 0; /* Discard other system messages (0xF1-0xF7) */
+
+ return event; /* Return SYSEX event or NULL */
+ }
+
+ /* Data/parameter byte */
+
+ /* Discard data bytes for events we don't care about */
+ if (parser->status == 0)
+ return NULL;
+
+ /* Max data size exceeded? (SYSEX messages only really) */
+ if (parser->nr_bytes == FLUID_MIDI_PARSER_MAX_DATA_SIZE) {
+ parser->status = 0; /* Discard the rest of the message */
+ return NULL;
+ }
+
+ /* Store next byte */
+ parser->data[parser->nr_bytes++] = c;
+
+ /* Do we still need more data to get this event complete? */
+ if (parser->nr_bytes < parser->nr_bytes_total)
+ return NULL;
+
+ /* Event is complete, return it.
+ * Running status byte MIDI feature is also handled here. */
+ parser->event.type = parser->status;
+ parser->event.channel = parser->channel;
+ parser->nr_bytes = 0; /* Reset data size, in case there are additional running status messages */
+
+ switch (parser->status) {
+ case NOTE_OFF:
+ case NOTE_ON:
+ case KEY_PRESSURE:
+ case CONTROL_CHANGE:
+ case PROGRAM_CHANGE:
+ case CHANNEL_PRESSURE:
+ parser->event.param1 = parser->data[0]; /* For example key number */
+ parser->event.param2 = parser->data[1]; /* For example velocity */
+ break;
+ case PITCH_BEND:
+ /* Pitch-bend is transmitted with 14-bit precision. */
+ parser->event.param1 = (parser->data[1] << 7) | parser->data[0];
+ break;
+ default: /* Unlikely */
+ return NULL;
+ }
+
+ return &parser->event;
+}
+
+/* Purpose:
+ * Returns the length of a MIDI message. */
+static int
+fluid_midi_event_length(unsigned char event)
+{
+ switch (event & 0xF0) {
+ case NOTE_OFF:
+ case NOTE_ON:
+ case KEY_PRESSURE:
+ case CONTROL_CHANGE:
+ case PITCH_BEND:
+ return 3;
+ case PROGRAM_CHANGE:
+ case CHANNEL_PRESSURE:
+ return 2;
+ }
+ switch (event) {
+ case MIDI_TIME_CODE:
+ case MIDI_SONG_SELECT:
+ case 0xF4:
+ case 0xF5:
+ return 2;
+ case MIDI_TUNE_REQUEST:
+ return 1;
+ case MIDI_SONG_POSITION:
+ return 3;
+ }
+ return 1;
+}
projects / ardour.git / blobdiff