Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

1 files changed, 216 insertions, 0 deletions

diff --git a/lib/libdvben50221/en50221_stdcam_hlci.c b/lib/libdvben50221/en50221_stdcam_hlci.c
new file mode 100644
index 0000000..f21637b
--- /dev/null
+++ b/lib/libdvben50221/en50221_stdcam_hlci.c
@@ -0,0 +1,216 @@
+/*
+	en50221 encoder An implementation for libdvb
+	an implementation for the en50221 transport layer
+
+	Copyright (C) 2006 Andrew de Quincey (adq_dvb@lidskialf.net)
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as
+	published by the Free Software Foundation; either version 2.1 of
+	the License, or (at your option) any later version.
+
+	This program 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 Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public
+	License along with this library; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#include <stdio.h>
+#include <unistd.h>
+#include <limits.h>
+#include <string.h>
+#include <errno.h>
+#include <libdvbapi/dvbca.h>
+#include "en50221_app_utils.h"
+#include "en50221_app_tags.h"
+#include "en50221_stdcam.h"
+
+
+struct en50221_stdcam_hlci {
+	struct en50221_stdcam stdcam;
+
+	int cafd;
+	int slotnum;
+	int initialised;
+	struct en50221_app_send_functions sendfuncs;
+};
+
+static void en50221_stdcam_hlci_destroy(struct en50221_stdcam *stdcam, int closefd);
+static enum en50221_stdcam_status en50221_stdcam_hlci_poll(struct en50221_stdcam *stdcam);
+static int hlci_cam_added(struct en50221_stdcam_hlci *hlci);
+static int hlci_send_data(void *arg, uint16_t session_number,
+			  uint8_t * data, uint16_t data_length);
+static int hlci_send_datav(void *arg, uint16_t session_number,
+			   struct iovec *vector, int iov_count);
+
+
+
+
+struct en50221_stdcam *en50221_stdcam_hlci_create(int cafd, int slotnum)
+{
+	// try and allocate space for the HLCI stdcam
+	struct en50221_stdcam_hlci *hlci =
+		malloc(sizeof(struct en50221_stdcam_hlci));
+	if (hlci == NULL) {
+		return NULL;
+	}
+	memset(hlci, 0, sizeof(struct en50221_stdcam_hlci));
+
+	// create the sendfuncs
+	hlci->sendfuncs.arg = hlci;
+	hlci->sendfuncs.send_data = hlci_send_data;
+	hlci->sendfuncs.send_datav = hlci_send_datav;
+
+	// create the resources (NOTE: we just use fake session numbers here)
+	hlci->stdcam.ai_resource = en50221_app_ai_create(&hlci->sendfuncs);
+	hlci->stdcam.ai_session_number = 0;
+	hlci->stdcam.ca_resource = en50221_app_ca_create(&hlci->sendfuncs);
+	hlci->stdcam.ca_session_number = 1;
+//      hlci->stdcam.mmi_resource = en50221_app_mmi_create(&hlci->sendfuncs);
+	hlci->stdcam.mmi_session_number = -1;
+
+	// done
+	hlci->stdcam.destroy = en50221_stdcam_hlci_destroy;
+	hlci->stdcam.poll = en50221_stdcam_hlci_poll;
+	hlci->slotnum = slotnum;
+	hlci->cafd = cafd;
+	return &hlci->stdcam;
+}
+
+static void en50221_stdcam_hlci_destroy(struct en50221_stdcam *stdcam, int closefd)
+{
+	struct en50221_stdcam_hlci *hlci = (struct en50221_stdcam_hlci *) stdcam;
+
+	if (hlci->stdcam.ai_resource)
+		en50221_app_ai_destroy(hlci->stdcam.ai_resource);
+	if (hlci->stdcam.ca_resource)
+		en50221_app_ca_destroy(hlci->stdcam.ca_resource);
+	if (hlci->stdcam.mmi_resource)
+		en50221_app_mmi_destroy(hlci->stdcam.mmi_resource);
+
+	if (closefd)
+		close(hlci->cafd);
+
+	free(hlci);
+}
+
+static enum en50221_stdcam_status en50221_stdcam_hlci_poll(struct en50221_stdcam *stdcam)
+{
+	struct en50221_stdcam_hlci *hlci = (struct en50221_stdcam_hlci *) stdcam;
+
+	switch(dvbca_get_cam_state(hlci->cafd, hlci->slotnum)) {
+	case DVBCA_CAMSTATE_MISSING:
+		hlci->initialised = 0;
+		break;
+
+	case DVBCA_CAMSTATE_READY:
+	case DVBCA_CAMSTATE_INITIALISING:
+		if (!hlci->initialised)
+			hlci_cam_added(hlci);
+		break;
+	}
+
+	// delay to prevent busy loop
+	usleep(10);
+
+	if (!hlci->initialised) {
+		return EN50221_STDCAM_CAM_NONE;
+	}
+	return EN50221_STDCAM_CAM_OK;
+}
+
+
+
+static int hlci_cam_added(struct en50221_stdcam_hlci *hlci)
+{
+	uint8_t buf[256];
+	int size;
+
+	// get application information
+	if (en50221_app_ai_enquiry(hlci->stdcam.ai_resource, 0)) {
+		return -EIO;
+	}
+	if ((size = dvbca_hlci_read(hlci->cafd, TAG_APP_INFO, buf, sizeof(buf))) < 0) {
+		return size;
+	}
+	if (en50221_app_ai_message(hlci->stdcam.ai_resource, 0, 0, EN50221_APP_AI_RESOURCEID, buf, size)) {
+		return -EIO;
+	}
+
+	// we forge a fake CA_INFO here so the main app works - since it will expect a CA_INFO
+	// this will be replaced with a proper call (below) when the driver support is there
+	buf[0] = TAG_CA_INFO >> 16;
+	buf[1] = (uint8_t) (TAG_CA_INFO >> 8);
+	buf[2] = (uint8_t) TAG_CA_INFO;
+	buf[3] = 0;
+	if (en50221_app_ca_message(hlci->stdcam.ca_resource, 0, 0, EN50221_APP_CA_RESOURCEID, buf, 4)) {
+		return -EIO;
+	}
+
+	/*
+	// get CA information
+	   if (en50221_app_ca_info_enq(ca_resource, 0)) {
+	   fprintf(stderr, "Failed to send CA INFO enquiry\n");
+	   cafd = -1;
+	   return -1;
+	   }
+	   if ((size = dvbca_hlci_read(cafd, TAG_CA_INFO, buf, sizeof(buf))) < 0) {
+	   fprintf(stderr, "Failed to read CA INFO\n");
+	   cafd = -1;
+	   return -1;
+	   }
+	   if (en50221_app_ca_message(ca_resource, 0, 0, EN50221_APP_CA_RESOURCEID, buf, size)) {
+	   fprintf(stderr, "Failed to parse CA INFO\n");
+	   cafd = -1;
+	   return -1;
+	   }
+	 */
+
+	// done
+	hlci->initialised = 1;
+	return 0;
+}
+
+static int hlci_send_data(void *arg, uint16_t session_number,
+			  uint8_t * data, uint16_t data_length)
+{
+	(void) session_number;
+	struct en50221_stdcam_hlci *hlci = arg;
+
+	return dvbca_hlci_write(hlci->cafd, data, data_length);
+}
+
+static int hlci_send_datav(void *arg, uint16_t session_number,
+			   struct iovec *vector, int iov_count)
+{
+	(void) session_number;
+	struct en50221_stdcam_hlci *hlci = arg;
+
+	// calculate the total length of the data to send
+	uint32_t data_size = 0;
+	int i;
+	for (i = 0; i < iov_count; i++) {
+		data_size += vector[i].iov_len;
+	}
+
+	// allocate memory for it
+	uint8_t *buf = malloc(data_size);
+	if (buf == NULL) {
+		return -1;
+	}
+	// merge the iovecs
+	uint32_t pos = 0;
+	for (i = 0; i < iov_count; i++) {
+		memcpy(buf + pos, vector[i].iov_base, vector[i].iov_len);
+		pos += vector[i].iov_len;
+	}
+
+	// sendit and cleanup
+	int status = dvbca_hlci_write(hlci->cafd, buf, data_size);
+	free(buf);
+	return status;
+}