Initial implementation of src/script.c

3 files changed, 299 insertions, 2 deletions

diff --git a/include/xas/script.h b/include/xas/script.h
new file mode 100644
index 0000000..102d421
--- /dev/null
+++ b/include/xas/script.h
@@ -0,0 +1,86 @@
+#ifndef _XAS_SCRIPT_H
+#define _XAS_SCRIPT_H
+
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <xas/audio.h>
+#include <xas/vox.h>
+#include <xas/bank.h>
+#include <xas/synth.h>
+#include <xas/spatial.h>
+
+enum xas_script_event_type {
+    XAS_SCRIPT_EVENT_OFF,
+    XAS_SCRIPT_EVENT_ON,
+    XAS_SCRIPT_EVENT_SET_POSITION,
+    XAS_SCRIPT_EVENT_SET_GAIN,
+    XAS_SCRIPT_EVENT_SET_BANK_INDEX,
+    XAS_SCRIPT_EVENT_SET_FREQUENCY
+};
+
+typedef struct _xas_script_event xas_script_event;
+
+struct _xas_script_event {
+    enum xas_script_event_type type;
+
+    xas_spatial_object *object;
+
+    struct timeval timestamp;
+
+    union {
+        float gain;
+        xas_spatial_coord point;
+        size_t index;
+        size_t frequency;
+    };
+
+    xas_script_event *next;
+};
+
+typedef struct _xas_script {
+    xas_spatial_scene *scene;
+
+    xas_script_event *first;
+
+    struct timeval timestamp;
+
+    size_t buffer_size,
+           current_index;
+} xas_script;
+
+xas_script *xas_script_new(xas_spatial_scene *scene, size_t buffer_size);
+
+void xas_script_destroy(xas_script *script);
+
+int xas_script_add_event_off(xas_script *script,
+                               xas_spatial_object *object,
+                               struct timeval timestamp);
+
+int xas_script_add_event_on(xas_script *script,
+                              xas_spatial_object *object,
+                              struct timeval timestamp);
+
+int xas_script_add_position_set(xas_script *script,
+                                  xas_spatial_object *object,
+                                  struct timeval timestamp,
+                                  xas_spatial_coord point);
+
+int xas_script_add_gain_set(xas_script *script,
+                              xas_spatial_object *object,
+                              struct timeval timestamp,
+                              float gain);
+
+int xas_script_add_bank_set(xas_script *script,
+                              xas_spatial_object *object,
+                              struct timeval timestamp,
+                              size_t index);
+
+int xas_script_add_frequency_set(xas_script *script,
+                                   xas_spatial_object *object,
+                                   struct timeval timestamp,
+                                   size_t frequency);
+
+int xas_script_play(xas_script *script, xas_audio_stream *sink);
+
+#endif /* _XAS_SCRIPT_H */
diff --git a/src/Makefile b/src/Makefile
index 7c26ac9..e8bf54d 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -7,9 +7,9 @@ CC		 = $(CROSS)cc
 CFLAGS		+= -I$(INCLUDE_PATH)
 LDFLAGS		+=
 
-HEADERS		= audio.h riff.h mixer.h synth.h vox.h bank.h spatial.h
+HEADERS		= audio.h riff.h mixer.h synth.h vox.h bank.h spatial.h script.h
 
-OBJS		= audio.o riff.o mixer.o synth.o vox.o bank.o spatial.o
+OBJS		= audio.o riff.o mixer.o synth.o vox.o bank.o spatial.o script.o
 
 VERSION_MAJOR	= 0
 VERSION_MINOR	= 0.1
diff --git a/src/script.c b/src/script.c
new file mode 100644
index 0000000..8c58f7f
--- /dev/null
+++ b/src/script.c
@@ -0,0 +1,211 @@
+#include <stdlib.h>
+#include <string.h>
+
+#include <xas/script.h>
+
+xas_script *xas_script_new(xas_spatial_scene *scene, size_t buffer_size) {
+    xas_script *script;
+
+    if ((script = malloc(sizeof(*script))) == NULL) {
+        goto error_malloc_script;
+    }
+
+    script->scene = scene;
+    script->first = NULL;
+
+    timerclear(&script->timestamp);
+
+    script->buffer_size   = buffer_size;
+    script->current_index = 0;
+
+    return script;
+
+error_malloc_script:
+    return NULL;
+}
+
+void xas_script_destroy(xas_script *script) {
+    xas_script_event *event = script->first;
+
+    while (event) {
+        xas_script_event *next = event->next;
+
+        free(event);
+
+        event = next;
+    }
+
+    free(script);
+}
+
+static void add_event(xas_script *script, xas_script_event *ev) {
+    xas_script_event *current = script->first;
+
+    if (script->first == NULL) {
+        script->first = ev;
+
+        return;
+    }
+
+    while (current) {
+        xas_script_event *next = current->next;
+
+        if (next == NULL) {
+            current->next = ev;
+
+            return;
+        }
+
+        if (!timercmp(&current->timestamp, &ev->timestamp,   <)
+         &&  timercmp(&current->timestamp, &next->timestamp, <)) {
+            current->next = ev;
+            ev->next      = next;
+
+            return;
+        }
+
+        current = next;
+    }
+}
+
+int xas_script_add_event_off(xas_script *script,
+                               xas_spatial_object *object,
+                               struct timeval timestamp) {
+    xas_script_event *ev;
+
+    if ((ev = malloc(sizeof(*ev))) == NULL) {
+        goto error_malloc_ev;
+    }
+
+    ev->type      = XAS_SCRIPT_EVENT_OFF;
+    ev->object    = object;
+    ev->timestamp = timestamp;
+    ev->next      = NULL;
+
+    add_event(script, ev);
+
+    return 0;
+
+error_malloc_ev:
+    return -1;
+}
+
+int xas_script_add_event_on(xas_script *script,
+                              xas_spatial_object *object,
+                              struct timeval timestamp) {
+    xas_script_event *ev;
+
+    if ((ev = malloc(sizeof(*ev))) == NULL) {
+        goto error_malloc_ev;
+    }
+
+    ev->type      = XAS_SCRIPT_EVENT_ON;
+    ev->object    = object;
+    ev->timestamp = timestamp;
+    ev->next      = NULL;
+
+    add_event(script, ev);
+
+    return 0;
+
+error_malloc_ev:
+    return -1;
+}
+
+int xas_script_add_position_set(xas_script *script,
+                                  xas_spatial_object *object,
+                                  struct timeval timestamp,
+                                  xas_spatial_coord point) {
+    xas_script_event *ev;
+
+    if ((ev = malloc(sizeof(*ev))) == NULL) {
+        goto error_malloc_ev;
+    }
+
+    ev->type      = XAS_SCRIPT_EVENT_SET_POSITION;
+    ev->object    = object;
+    ev->timestamp = timestamp;
+    ev->point     = point;
+    ev->next      = NULL;
+
+    add_event(script, ev);
+
+    return 0;
+
+error_malloc_ev:
+    return -1;
+}
+
+int xas_script_add_gain_set(xas_script *script,
+                              xas_spatial_object *object,
+                              struct timeval timestamp,
+                              float gain) {
+    xas_script_event *ev;
+
+    if ((ev = malloc(sizeof(*ev))) == NULL) {
+        goto error_malloc_ev;
+    }
+
+    ev->type      = XAS_SCRIPT_EVENT_ON;
+    ev->object    = object;
+    ev->timestamp = timestamp;
+    ev->gain      = gain;
+    ev->next      = NULL;
+
+    add_event(script, ev);
+
+    return 0;
+
+error_malloc_ev:
+    return -1;
+}
+
+int xas_script_add_bank_set(xas_script *script,
+                              xas_spatial_object *object,
+                              struct timeval timestamp,
+                              size_t index) {
+    xas_script_event *ev;
+
+    if ((ev = malloc(sizeof(*ev))) == NULL) {
+        goto error_malloc_ev;
+    }
+
+    ev->type      = XAS_SCRIPT_EVENT_SET_BANK_INDEX;
+    ev->object    = object;
+    ev->timestamp = timestamp;
+    ev->next      = NULL;
+    ev->index     = index;
+
+    add_event(script, ev);
+
+    return 0;
+
+error_malloc_ev:
+    return -1;
+}
+
+int xas_script_add_frequency_set(xas_script *script,
+                                   xas_spatial_object *object,
+                                   struct timeval timestamp,
+                                   size_t frequency) {
+    xas_script_event *ev;
+
+    if ((ev = malloc(sizeof(*ev))) == NULL) {
+        goto error_malloc_ev;
+    }
+
+    ev->type      = XAS_SCRIPT_EVENT_SET_FREQUENCY;
+    ev->object    = object;
+    ev->timestamp = timestamp;
+    ev->next      = NULL;
+    ev->frequency = frequency;
+
+    add_event(script, ev);
+
+    return 0;
+
+error_malloc_ev:
+    return -1;
+}
+
+int xas_script_play(xas_script *script, xas_audio_stream *sink);