Initial submission of the PCem-Experimental source code.

src/cdrom-null.c

@@ -0,0 +1,139 @@
+#include "ibm.h"
+#include "ide.h"
+#include "cdrom-ioctl.h"
+
+int cdrom_drive;
+
+static ATAPI null_atapi;
+
+void cdrom_null_audio_callback(int16_t *output, int len)
+{
+        memset(output, 0, len * 2);
+}
+
+void cdrom_null_audio_stop()
+{
+}
+
+static void null_playaudio(uint32_t pos, uint32_t len, int ismsf)
+{
+}
+
+static void null_pause(void)
+{
+}
+
+static void null_resume(void)
+{
+}
+
+static void null_stop(void)
+{
+}
+
+static void null_seek(uint32_t pos)
+{
+}
+
+static int null_ready(void)
+{
+        return 0;
+}
+
+/* Always return 0, the contents of a null CD-ROM drive never change. */
+static int null_medium_changed(void)
+{
+        return 0;
+}
+
+static uint8_t null_getcurrentsubchannel(uint8_t *b, int msf)
+{
+        return 0x13;
+}
+
+static void null_eject(void)
+{
+}
+
+static void null_load(void)
+{
+}
+
+static void null_readsector(uint8_t *b, int sector)
+{
+}
+
+static void null_readsector_raw(uint8_t *b, int sector)
+{
+}
+
+static int null_readtoc(unsigned char *b, unsigned char starttrack, int msf, int maxlen, int single)
+{
+        return 0;
+}
+
+static int null_readtoc_session(unsigned char *b, int msf, int maxlen)
+{
+		return 0;
+}
+
+static int null_readtoc_raw(unsigned char *b, int maxlen)
+{
+		return 0;
+}
+
+static uint32_t null_size()
+{
+        return 0;
+}
+
+static int null_status()
+{
+	return CD_STATUS_EMPTY;
+}
+
+void cdrom_null_reset()
+{
+}
+
+int cdrom_null_open(char d)
+{
+        atapi = &null_atapi;
+        return 0;
+}
+
+void null_close(void)
+{
+}
+
+static void null_exit(void)
+{
+}
+
+static int null_is_track_audio(uint32_t pos, int ismsf)
+{
+	return 0;
+}
+
+static ATAPI null_atapi =
+{
+        null_ready,
+		null_medium_changed,
+        null_readtoc,
+        null_readtoc_session,
+		null_readtoc_raw,
+        null_getcurrentsubchannel,
+        null_readsector,
+		null_readsector_raw,
+        null_playaudio,
+        null_seek,
+        null_load,
+        null_eject,
+        null_pause,
+        null_resume,
+        null_size,
+		null_status,
+		null_is_track_audio,
+        null_stop,
+        null_exit
+};