--- /dev/null
+/*
+ * Copyright 2013 Samsung Electronics Co., Ltd
+ *
+ * Licensed under the Flora License, Version 1.1 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://floralicense.org/license/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stddef.h>
+#include <sys/shm.h>
+#include <sys/ipc.h>
+
+#include <dlog.h>
+#include <livebox-errno.h> /* For error code */
+
+#include "debug.h"
+#include "util.h"
+#include "fb.h"
+
+int errno;
+
+struct fb_info {
+ char *id;
+ int w;
+ int h;
+ int bufsz;
+ void *buffer;
+
+ int pixels;
+ int handle;
+};
+
+struct buffer { /*!< Must has to be sync with slave & provider */
+ enum {
+ CREATED = 0x00beef00,
+ DESTROYED = 0x00dead00
+ } state;
+ enum buffer_type type;
+ int refcnt;
+ void *info;
+ char data[];
+};
+
+static struct {
+} s_info = {
+};
+
+int fb_init(void *disp)
+{
+ return 0;
+}
+
+int fb_fini(void)
+{
+ return 0;
+}
+
+static inline void update_fb_size(struct fb_info *info)
+{
+ info->bufsz = info->w * info->h * info->pixels;
+}
+
+static inline int sync_for_file(struct fb_info *info)
+{
+ int fd;
+ struct buffer *buffer;
+
+ buffer = info->buffer;
+
+ if (!buffer) { /* Ignore this sync request */
+ return LB_STATUS_SUCCESS;
+ }
+
+ if (buffer->state != CREATED) {
+ ErrPrint("Invalid state of a FB\n");
+ return LB_STATUS_ERROR_INVALID;
+ }
+
+ if (buffer->type != BUFFER_TYPE_FILE) {
+ ErrPrint("Invalid buffer\n");
+ return LB_STATUS_SUCCESS;
+ }
+
+ fd = open(util_uri_to_path(info->id), O_RDONLY);
+ if (fd < 0) {
+ ErrPrint("Failed to open a file (%s) because of (%s)\n",
+ util_uri_to_path(info->id), strerror(errno));
+
+ /*!
+ * \note
+ * But return ZERO, even if we couldn't get a buffer file,
+ * the viewer can draw empty screen.
+ *
+ * and then update it after it gots update events
+ */
+ return LB_STATUS_SUCCESS;
+ }
+
+ if (read(fd, buffer->data, info->bufsz) != info->bufsz) {
+ ErrPrint("read: %s\n", strerror(errno));
+ if (close(fd) < 0) {
+ ErrPrint("close: %s\n", strerror(errno));
+ }
+
+ /*!
+ * \note
+ * But return ZERO, even if we couldn't get a buffer file,
+ * the viewer can draw empty screen.
+ *
+ * and then update it after it gots update events
+ */
+ return LB_STATUS_SUCCESS;
+ }
+
+ if (close(fd) < 0) {
+ ErrPrint("close: %s\n", strerror(errno));
+ }
+ return LB_STATUS_SUCCESS;
+}
+
+int fb_sync(struct fb_info *info)
+{
+ if (!info) {
+ ErrPrint("FB Handle is not valid\n");
+ return LB_STATUS_ERROR_INVALID;
+ }
+
+ if (!info->id || info->id[0] == '\0') {
+ DbgPrint("Ingore sync\n");
+ return LB_STATUS_SUCCESS;
+ }
+
+ if (!strncasecmp(info->id, SCHEMA_FILE, strlen(SCHEMA_FILE))) {
+ return sync_for_file(info);
+ } else if (!strncasecmp(info->id, SCHEMA_PIXMAP, strlen(SCHEMA_PIXMAP))) {
+ } else if (!strncasecmp(info->id, SCHEMA_SHM, strlen(SCHEMA_SHM))) {
+ /* No need to do sync */
+ return LB_STATUS_SUCCESS;
+ }
+
+ return LB_STATUS_ERROR_INVALID;
+}
+
+struct fb_info *fb_create(const char *id, int w, int h)
+{
+ struct fb_info *info;
+
+ if (!id || id[0] == '\0') {
+ ErrPrint("Invalid ID\n");
+ return NULL;
+ }
+
+ info = calloc(1, sizeof(*info));
+ if (!info) {
+ ErrPrint("Heap: %s\n", strerror(errno));
+ return NULL;
+ }
+
+ info->id = strdup(id);
+ if (!info->id) {
+ ErrPrint("Heap: %s\n", strerror(errno));
+ free(info);
+ return NULL;
+ }
+
+ info->pixels = sizeof(int); /* Use the default pixels(depth) */
+
+ if (sscanf(info->id, SCHEMA_SHM "%d", &info->handle) == 1) {
+ DbgPrint("SHMID: %d is gotten\n", info->handle);
+ } else if (sscanf(info->id, SCHEMA_PIXMAP "%d:%d", &info->handle, &info->pixels) == 2) {
+ DbgPrint("PIXMAP-SHMID: %d is gotten (%d)\n", info->handle, info->pixels);
+ ErrPrint("Unsupported\n");
+ free(info);
+ return NULL;
+ } else {
+ info->handle = LB_STATUS_ERROR_INVALID;
+ }
+
+ info->bufsz = 0;
+ info->buffer = NULL;
+ info->w = w;
+ info->h = h;
+
+ return info;
+}
+
+int fb_destroy(struct fb_info *info)
+{
+ if (!info) {
+ ErrPrint("Handle is not valid\n");
+ return LB_STATUS_ERROR_INVALID;
+ }
+
+ if (info->buffer) {
+ struct buffer *buffer;
+ buffer = info->buffer;
+
+ buffer->info = NULL;
+ }
+
+ free(info->id);
+ free(info);
+ return LB_STATUS_SUCCESS;
+}
+
+int fb_is_created(struct fb_info *info)
+{
+ if (!info) {
+ ErrPrint("Handle is not valid\n");
+ return 0;
+ }
+
+ if (!strncasecmp(info->id, SCHEMA_PIXMAP, strlen(SCHEMA_PIXMAP)) && info->handle != 0) {
+ return 1;
+ } else if (!strncasecmp(info->id, SCHEMA_SHM, strlen(SCHEMA_SHM)) && info->handle > 0) {
+ return 1;
+ } else {
+ const char *path;
+ path = util_uri_to_path(info->id);
+ if (path && access(path, F_OK | R_OK) == 0) {
+ return 1;
+ } else {
+ ErrPrint("access: %s (%s)\n", strerror(errno), path);
+ }
+ }
+
+ return 0;
+}
+
+void *fb_acquire_buffer(struct fb_info *info)
+{
+ struct buffer *buffer;
+
+ if (!info) {
+ ErrPrint("info == NIL\n");
+ return NULL;
+ }
+
+ if (!info->buffer) {
+ if (!strncasecmp(info->id, SCHEMA_PIXMAP, strlen(SCHEMA_PIXMAP))) {
+ ErrPrint("Unsupported Type\n");
+ return NULL;
+ } else if (!strncasecmp(info->id, SCHEMA_FILE, strlen(SCHEMA_FILE))) {
+ update_fb_size(info);
+
+ buffer = calloc(1, sizeof(*buffer) + info->bufsz);
+ if (!buffer) {
+ ErrPrint("Heap: %s\n", strerror(errno));
+ info->bufsz = 0;
+ return NULL;
+ }
+
+ buffer->type = BUFFER_TYPE_FILE;
+ buffer->refcnt = 0;
+ buffer->state = CREATED;
+ buffer->info = info;
+ info->buffer = buffer;
+
+ sync_for_file(info);
+ } else if (!strncasecmp(info->id, SCHEMA_SHM, strlen(SCHEMA_SHM))) {
+ buffer = shmat(info->handle, NULL, 0);
+ if (buffer == (void *)-1) {
+ ErrPrint("shmat: %s (%d)\n", strerror(errno), info->handle);
+ return NULL;
+ }
+
+ return buffer->data;
+ } else {
+ ErrPrint("Buffer is not created (%s)\n", info->id);
+ return NULL;
+ }
+ }
+
+ buffer = info->buffer;
+
+ switch (buffer->type) {
+ case BUFFER_TYPE_FILE:
+ buffer->refcnt++;
+ break;
+ case BUFFER_TYPE_PIXMAP:
+ default:
+ DbgPrint("Unknwon FP: %d\n", buffer->type);
+ break;
+ }
+
+ return buffer->data;
+}
+
+int fb_release_buffer(void *data)
+{
+ struct buffer *buffer;
+
+ if (!data) {
+ ErrPrint("buffer data == NIL\n");
+ return LB_STATUS_ERROR_INVALID;
+ }
+
+ buffer = container_of(data, struct buffer, data);
+
+ if (buffer->state != CREATED) {
+ ErrPrint("Invalid handle\n");
+ return LB_STATUS_ERROR_INVALID;
+ }
+
+ switch (buffer->type) {
+ case BUFFER_TYPE_SHM:
+ if (shmdt(buffer) < 0) {
+ ErrPrint("shmdt: %s\n", strerror(errno));
+ }
+ break;
+ case BUFFER_TYPE_FILE:
+ buffer->refcnt--;
+ if (buffer->refcnt == 0) {
+ struct fb_info *info;
+ info = buffer->info;
+
+ buffer->state = DESTROYED;
+ free(buffer);
+
+ if (info && info->buffer == buffer) {
+ info->buffer = NULL;
+ }
+ }
+ break;
+ case BUFFER_TYPE_PIXMAP:
+ default:
+ ErrPrint("Unknwon buffer type\n");
+ break;
+ }
+
+ return LB_STATUS_SUCCESS;
+}
+
+int fb_refcnt(void *data)
+{
+ struct buffer *buffer;
+ struct shmid_ds buf;
+ int ret;
+
+ if (!data) {
+ return LB_STATUS_ERROR_INVALID;
+ }
+
+ buffer = container_of(data, struct buffer, data);
+
+ if (buffer->state != CREATED) {
+ ErrPrint("Invalid handle\n");
+ return LB_STATUS_ERROR_INVALID;
+ }
+
+ switch (buffer->type) {
+ case BUFFER_TYPE_SHM:
+ if (shmctl(buffer->refcnt, IPC_STAT, &buf) < 0) {
+ ErrPrint("Error: %s\n", strerror(errno));
+ return LB_STATUS_ERROR_FAULT;
+ }
+
+ ret = buf.shm_nattch;
+ break;
+ case BUFFER_TYPE_FILE:
+ ret = buffer->refcnt;
+ break;
+ case BUFFER_TYPE_PIXMAP:
+ default:
+ ret = LB_STATUS_ERROR_INVALID;
+ break;
+ }
+
+ return ret;
+}
+
+const char *fb_id(struct fb_info *info)
+{
+ return info ? info->id : NULL;
+}
+
+int fb_get_size(struct fb_info *info, int *w, int *h)
+{
+ if (!info) {
+ ErrPrint("Handle is not valid\n");
+ return LB_STATUS_ERROR_INVALID;
+ }
+
+ *w = info->w;
+ *h = info->h;
+ return LB_STATUS_SUCCESS;
+}
+
+int fb_size(struct fb_info *info)
+{
+ if (!info) {
+ return 0;
+ }
+
+ update_fb_size(info);
+
+ return info->bufsz;
+}
+
+int fb_type(struct fb_info *info)
+{
+ struct buffer *buffer;
+
+ if (!info) {
+ return BUFFER_TYPE_ERROR;
+ }
+
+ buffer = info->buffer;
+ if (!buffer) {
+ int type = BUFFER_TYPE_ERROR;
+ /*!
+ * \note
+ * Try to get this from SCHEMA
+ */
+ if (info->id) {
+ if (!strncasecmp(info->id, SCHEMA_FILE, strlen(SCHEMA_FILE))) {
+ type = BUFFER_TYPE_FILE;
+ } else if (!strncasecmp(info->id, SCHEMA_PIXMAP, strlen(SCHEMA_PIXMAP))) {
+ /* Unsupported type */
+ } else if (!strncasecmp(info->id, SCHEMA_SHM, strlen(SCHEMA_SHM))) {
+ type = BUFFER_TYPE_SHM;
+ }
+ }
+
+ return type;
+ }
+
+ return buffer->type;
+}
+/* End of a file */
projects / platform / core / appfw / widget-viewer.git / commitdiff