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Diffstat (limited to 'src/dxr3/dxr3_scr.c')
-rw-r--r--src/dxr3/dxr3_scr.c247
1 files changed, 247 insertions, 0 deletions
diff --git a/src/dxr3/dxr3_scr.c b/src/dxr3/dxr3_scr.c
new file mode 100644
index 000000000..2ddfb6844
--- /dev/null
+++ b/src/dxr3/dxr3_scr.c
@@ -0,0 +1,247 @@
+/*
+ * Copyright (C) 2000-2002 the xine project
+ *
+ * This file is part of xine, a free video player.
+ *
+ * xine 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.
+ *
+ * xine 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 more 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ * $Id: dxr3_scr.c,v 1.1 2002/05/06 11:26:37 jcdutton Exp $
+ */
+
+/* dxr3 scr plugin.
+ * enables xine to use the internal clock of the card as its
+ * global time reference.
+ */
+
+
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "xine_internal.h"
+#include "xineutils.h"
+#include "dxr3.h"
+
+#include "dxr3_scr.h"
+
+#define LOG_SCR 0
+
+
+/* functions required by xine api */
+static int dxr3_scr_get_priority(scr_plugin_t *scr);
+static void dxr3_scr_start(scr_plugin_t *scr, int64_t vpts);
+static int64_t dxr3_scr_get_current(scr_plugin_t *scr);
+static void dxr3_scr_adjust(scr_plugin_t *scr, int64_t vpts);
+static int dxr3_scr_set_speed(scr_plugin_t *scr, int speed);
+static void dxr3_scr_exit(scr_plugin_t *scr);
+
+/* helper function */
+static int dxr3_mvcommand(int fd_control, int command);
+static void dxr3_scr_update_priority(void *this_gen, cfg_entry_t *entry);
+
+
+dxr3_scr_t *dxr3_scr_init(xine_t *xine)
+{
+ dxr3_scr_t *this;
+ char *confstr;
+
+ this = (dxr3_scr_t *)malloc(sizeof(dxr3_scr_t));
+
+ confstr = xine->config->register_string(xine->config,
+ CONF_LOOKUP, CONF_DEFAULT, CONF_NAME, CONF_HELP, NULL, NULL);
+ if ((this->fd_control = open(confstr, O_WRONLY)) < 0) {
+ printf("dxr3_scr: Failed to open control device %s (%s)\n",
+ confstr, strerror(errno));
+ free(this);
+ return NULL;
+ }
+
+ this->scr_plugin.interface_version = 2;
+ this->scr_plugin.get_priority = dxr3_scr_get_priority;
+ this->scr_plugin.start = dxr3_scr_start;
+ this->scr_plugin.get_current = dxr3_scr_get_current;
+ this->scr_plugin.adjust = dxr3_scr_adjust;
+ this->scr_plugin.set_speed = dxr3_scr_set_speed;
+ this->scr_plugin.exit = dxr3_scr_exit;
+
+ this->priority = xine->config->register_num(
+ xine->config, "dxr3.scr_priority", 10, "Dxr3: SCR plugin priority",
+ "Scr priorities greater 5 make the dxr3 xine's master clock.",
+ dxr3_scr_update_priority, this);
+ this->offset = 0;
+ this->last_pts = 0;
+ this->scanning = 0;
+
+ pthread_mutex_init(&this->mutex, NULL);
+
+#if LOG_SCR
+ printf("dxr3_scr: init complete\n");
+#endif
+ return this;
+}
+
+
+static int dxr3_scr_get_priority(scr_plugin_t *scr)
+{
+ dxr3_scr_t *this = (dxr3_scr_t *)scr;
+ return this->priority;
+}
+
+static void dxr3_scr_start(scr_plugin_t *scr, int64_t vpts)
+{
+ dxr3_scr_t *this = (dxr3_scr_t *)scr;
+ uint32_t vpts32 = vpts >> 1;
+
+ pthread_mutex_lock(&this->mutex);
+ this->last_pts = vpts32;
+ this->offset = vpts - ((int64_t)vpts32 << 1);
+ if (ioctl(this->fd_control, EM8300_IOCTL_SCR_SET, &vpts32))
+ printf("dxr3_scr: start failed (%s)\n", strerror(errno));
+#if LOG_SCR
+ printf("dxr3_scr: started with vpts %lld\n", vpts);
+#endif
+ /* mis-use vpts32 to set the clock speed to 0x900, which is normal speed */
+ vpts32 = 0x900;
+ ioctl(this->fd_control, EM8300_IOCTL_SCR_SETSPEED, &vpts32);
+ this->scanning = 0;
+ pthread_mutex_unlock(&this->mutex);
+}
+
+static int64_t dxr3_scr_get_current(scr_plugin_t *scr)
+{
+ dxr3_scr_t *this = (dxr3_scr_t *)scr;
+ uint32_t pts;
+ int64_t current;
+
+ pthread_mutex_lock(&this->mutex);
+ if (ioctl(this->fd_control, EM8300_IOCTL_SCR_GET, &pts))
+ printf("dxr3_scr: get current failed (%s)\n", strerror(errno));
+ if (this->last_pts > 0xF0000000 && pts < 0x10000000)
+ /* wrap around detected, compensate with offset */
+ this->offset += (int64_t)1 << 33;
+ this->last_pts = pts;
+ current = ((int64_t)pts << 1) + this->offset;
+ pthread_mutex_unlock(&this->mutex);
+
+ return current;
+}
+
+static void dxr3_scr_adjust(scr_plugin_t *scr, int64_t vpts)
+{
+ dxr3_scr_t *this = (dxr3_scr_t *)scr;
+ uint32_t current_pts32;
+ int32_t offset32;
+
+ pthread_mutex_lock(&this->mutex);
+ if (ioctl(this->fd_control, EM8300_IOCTL_SCR_GET, &current_pts32))
+ printf("dxr3_scr: adjust get failed (%s)\n", strerror(errno));
+ this->last_pts = current_pts32;
+ this->offset = vpts - ((int64_t)current_pts32 << 1);
+ offset32 = this->offset / 4;
+ /* kernel driver ignores diffs < 7200, so abs(offset32) must be > 7200 / 4 */
+ if (offset32 < -7200/4 || offset32 > 7200/4) {
+ uint32_t vpts32 = vpts >> 1;
+ if (ioctl(this->fd_control, EM8300_IOCTL_SCR_SET, &vpts32))
+ printf("dxr3_scr: adjust set failed (%s)\n", strerror(errno));
+ this->last_pts = vpts32;
+ this->offset = vpts - ((int64_t)vpts32 << 1);
+ }
+#if LOG_SCR
+ printf("dxr3_scr: adjusted to vpts %lld\n", vpts);
+#endif
+ pthread_mutex_unlock(&this->mutex);
+}
+
+static int dxr3_scr_set_speed(scr_plugin_t *scr, int speed)
+{
+ dxr3_scr_t *this = (dxr3_scr_t *)scr;
+ uint32_t em_speed;
+ int playmode;
+
+ switch (speed) {
+ case SPEED_PAUSE:
+ em_speed = 0;
+ playmode = MVCOMMAND_PAUSE;
+ break;
+ case SPEED_SLOW_4:
+ em_speed = 0x900 / 4;
+ playmode = MVCOMMAND_START;
+ break;
+ case SPEED_SLOW_2:
+ em_speed = 0x900 / 2;
+ playmode = MVCOMMAND_START;
+ break;
+ case SPEED_NORMAL:
+ em_speed = 0x900;
+ playmode = MVCOMMAND_SYNC;
+ break;
+ case SPEED_FAST_2:
+ em_speed = 0x900 * 2;
+ playmode = MVCOMMAND_START;
+ break;
+ case SPEED_FAST_4:
+ em_speed = 0x900 * 4;
+ playmode = MVCOMMAND_START;
+ break;
+ default:
+ speed = em_speed = 0;
+ playmode = MVCOMMAND_PAUSE;
+ }
+
+ if (dxr3_mvcommand(this->fd_control, playmode))
+ printf("dxr3_scr: failed to playmode (%s)\n", strerror(errno));
+
+ if(em_speed > 0x900)
+ this->scanning = 1;
+ else
+ this->scanning = 0;
+
+ if (ioctl(this->fd_control, EM8300_IOCTL_SCR_SETSPEED, &em_speed))
+ printf("dxr3_scr: failed to set speed (%s)\n", strerror(errno));
+
+#if LOG_SCR
+ printf("dxr3_scr: speed set to mode %d\n", speed);
+#endif
+ return speed;
+}
+
+static void dxr3_scr_exit(scr_plugin_t *scr)
+{
+ dxr3_scr_t *this = (dxr3_scr_t *)scr;
+
+ pthread_mutex_destroy(&this->mutex);
+ free(this);
+}
+
+
+static int dxr3_mvcommand(int fd_control, int command)
+{
+ em8300_register_t regs;
+
+ regs.microcode_register = 1;
+ regs.reg = 0;
+ regs.val = command;
+
+ return ioctl(fd_control, EM8300_IOCTL_WRITEREG, &regs);
+}
+
+static void dxr3_scr_update_priority(void *this_gen, cfg_entry_t *entry)
+{
+ ((dxr3_scr_t *)this_gen)->priority = entry->num_value;
+ printf("dxr3_scr: setting scr priority to %d\n",
+ entry->num_value);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-28 11:17:16 +0000