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ffmpeg-kit-main/tools/protocols/libavformat_file.c

@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit 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 FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "libavutil/file.h"
+
+static int64_t saf_seek(URLContext *h, int64_t pos, int whence)
+{
+    FileContext *c = h->priv_data;
+    int64_t ret;
+
+    if (whence == AVSEEK_SIZE) {
+        struct stat st;
+        ret = fstat(c->fd, &st);
+        return ret < 0 ? AVERROR(errno) : (S_ISFIFO(st.st_mode) ? 0 : st.st_size);
+    }
+
+    ret = lseek(c->fd, pos, whence);
+
+    return ret < 0 ? AVERROR(errno) : ret;
+}
+
+static int saf_open(URLContext *h, const char *filename, int flags)
+{
+    FileContext *c = h->priv_data;
+    int saf_id;
+    struct stat st;
+    char *final;
+    char *saveptr = NULL;
+    char *saf_id_string = NULL;
+    char filename_backup[128];
+
+    av_strstart(filename, "saf:", &filename);
+    av_strlcpy(filename_backup, filename, FFMIN(sizeof(filename), sizeof(filename_backup)));
+    saf_id_string = av_strtok(filename_backup, ".", &saveptr);
+
+    saf_id = strtol(saf_id_string, &final, 10);
+    if ((saf_id_string == final) || *final ) {
+        saf_id = -1;
+    }
+
+    saf_open_function custom_saf_open = av_get_saf_open();
+    if (custom_saf_open != NULL) {
+        int rc = custom_saf_open(saf_id);
+        if (rc) {
+            c->fd = rc;
+        } else {
+            c->fd = saf_id;
+        }
+    } else {
+        c->fd = saf_id;
+    }
+
+    h->is_streamed = !fstat(saf_id, &st) && S_ISFIFO(st.st_mode);
+
+    /* Buffer writes more than the default 32k to improve throughput especially
+     * with networked file systems */
+    if (!h->is_streamed && flags & AVIO_FLAG_WRITE)
+        h->min_packet_size = h->max_packet_size = 262144;
+
+    if (c->seekable >= 0)
+        h->is_streamed = !c->seekable;
+
+    return 0;
+}
+
+static int saf_check(URLContext *h, int mask)
+{
+    int ret = 0;
+    const char *filename = h->filename;
+    av_strstart(filename, "saf:", &filename);
+
+    {
+#if HAVE_ACCESS && defined(R_OK)
+    if (access(filename, F_OK) < 0)
+        return AVERROR(errno);
+    if (mask&AVIO_FLAG_READ)
+        if (access(filename, R_OK) >= 0)
+            ret |= AVIO_FLAG_READ;
+    if (mask&AVIO_FLAG_WRITE)
+        if (access(filename, W_OK) >= 0)
+            ret |= AVIO_FLAG_WRITE;
+#else
+    struct stat st;
+#   ifndef _WIN32
+    ret = stat(filename, &st);
+#   else
+    ret = win32_stat(filename, &st);
+#   endif
+    if (ret < 0)
+        return AVERROR(errno);
+
+    ret |= st.st_mode&S_IRUSR ? mask&AVIO_FLAG_READ  : 0;
+    ret |= st.st_mode&S_IWUSR ? mask&AVIO_FLAG_WRITE : 0;
+#endif
+    }
+    return ret;
+}
+
+static int saf_delete(URLContext *h)
+{
+#if HAVE_UNISTD_H
+    int ret;
+    const char *filename = h->filename;
+    av_strstart(filename, "saf:", &filename);
+
+    ret = rmdir(filename);
+    if (ret < 0 && (errno == ENOTDIR
+#   ifdef _WIN32
+        || errno == EINVAL
+#   endif
+        ))
+        ret = unlink(filename);
+    if (ret < 0)
+        return AVERROR(errno);
+
+    return ret;
+#else
+    return AVERROR(ENOSYS);
+#endif /* HAVE_UNISTD_H */
+}
+
+static int saf_move(URLContext *h_src, URLContext *h_dst)
+{
+    const char *filename_src = h_src->filename;
+    const char *filename_dst = h_dst->filename;
+    av_strstart(filename_src, "saf:", &filename_src);
+    av_strstart(filename_dst, "saf:", &filename_dst);
+
+    if (rename(filename_src, filename_dst) < 0)
+        return AVERROR(errno);
+
+    return 0;
+}
+
+static int saf_close(URLContext *h)
+{
+    FileContext *c = h->priv_data;
+
+    saf_close_function custom_saf_close = av_get_saf_close();
+    if (custom_saf_close != NULL) {
+        return custom_saf_close(c->fd);
+    } else {
+        return 0;
+    }
+}
+
+static const AVClass saf_class = {
+    .class_name = "saf",
+    .item_name  = av_default_item_name,
+    .option     = file_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+const URLProtocol ff_saf_protocol = {
+    .name                = "saf",
+    .url_open            = saf_open,
+    .url_read            = file_read,
+    .url_write           = file_write,
+    .url_seek            = saf_seek,
+    .url_close           = saf_close,
+    .url_get_file_handle = file_get_handle,
+    .url_check           = saf_check,
+    .url_delete          = saf_delete,
+    .url_move            = saf_move,
+    .priv_data_size      = sizeof(FileContext),
+    .priv_data_class     = &saf_class,
+    .default_whitelist   = "saf,crypto,data"
+};

ffmpeg-kit-main/tools/protocols/libavutil_file.c

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit 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 FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+static saf_open_function _saf_open_function = NULL;
+static saf_close_function _saf_close_function = NULL;
+
+saf_open_function av_get_saf_open() {
+    return _saf_open_function;
+}
+
+saf_close_function av_get_saf_close() {
+    return _saf_close_function;
+}
+
+void av_set_saf_open(saf_open_function open_function) {
+    _saf_open_function = open_function;
+}
+
+void av_set_saf_close(saf_close_function close_function) {
+    _saf_close_function = close_function;
+}

ffmpeg-kit-main/tools/protocols/libavutil_file.h

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit 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 FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef AVUTIL_FILE_FFMPEG_KIT_PROTOCOLS_H
+#define AVUTIL_FILE_FFMPEG_KIT_PROTOCOLS_H
+
+typedef int (*saf_open_function)(int);
+
+typedef int (*saf_close_function)(int);
+
+saf_open_function av_get_saf_open(void);
+
+saf_close_function av_get_saf_close(void);
+
+void av_set_saf_open(saf_open_function);
+
+void av_set_saf_close(saf_close_function);
+
+#endif /* AVUTIL_FILE_FFMPEG_KIT_PROTOCOLS_H */