[FFmpeg-devel] [PATCH 2/4] doc/examples: add directory listing example
Mariusz Szczepańczyk
mszczepanczyk at gmail.com
Thu Mar 26 01:25:18 CET 2015
From: Lukasz Marek <lukasz.m.luki2 at gmail.com>
---
.gitignore | 1 +
configure | 2 +
doc/Makefile | 1 +
doc/examples/Makefile | 3 +-
doc/examples/avio_list_dir.c | 105 +++++++++++++++++++++++++++++++++++++++++++
5 files changed, 111 insertions(+), 1 deletion(-)
create mode 100644 doc/examples/avio_list_dir.c
diff --git a/.gitignore b/.gitignore
index d2088e5..71d4d64 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,6 +36,7 @@
/doc/avoptions_codec.texi
/doc/avoptions_format.texi
/doc/doxy/html/
+/doc/examples/avio_list_dir
/doc/examples/avio_reading
/doc/examples/decoding_encoding
/doc/examples/demuxing_decoding
diff --git a/configure b/configure
index a96bfb7..cd84d2b 100755
--- a/configure
+++ b/configure
@@ -1321,6 +1321,7 @@ COMPONENT_LIST="
EXAMPLE_LIST="
avio_reading_example
+ avio_list_dir_example
decoding_encoding_example
demuxing_decoding_example
extract_mvs_example
@@ -2653,6 +2654,7 @@ zoompan_filter_deps="swscale"
# examples
avio_reading="avformat avcodec avutil"
+avio_list_dir="avformat avutil"
avcodec_example_deps="avcodec avutil"
decoding_encoding_example_deps="avcodec avformat avutil"
demuxing_decoding_example_deps="avcodec avformat avutil"
diff --git a/doc/Makefile b/doc/Makefile
index 697142f..4573531 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -36,6 +36,7 @@ DOCS-$(CONFIG_MANPAGES) += $(MANPAGES)
DOCS-$(CONFIG_TXTPAGES) += $(TXTPAGES)
DOCS = $(DOCS-yes)
+DOC_EXAMPLES-$(CONFIG_AVIO_LIST_DIR_EXAMPLE) += avio_list_dir
DOC_EXAMPLES-$(CONFIG_AVIO_READING_EXAMPLE) += avio_reading
DOC_EXAMPLES-$(CONFIG_AVCODEC_EXAMPLE) += avcodec
DOC_EXAMPLES-$(CONFIG_DECODING_ENCODING_EXAMPLE) += decoding_encoding
diff --git a/doc/examples/Makefile b/doc/examples/Makefile
index 9f03f04..9699f11 100644
--- a/doc/examples/Makefile
+++ b/doc/examples/Makefile
@@ -11,7 +11,8 @@ CFLAGS += -Wall -g
CFLAGS := $(shell pkg-config --cflags $(FFMPEG_LIBS)) $(CFLAGS)
LDLIBS := $(shell pkg-config --libs $(FFMPEG_LIBS)) $(LDLIBS)
-EXAMPLES= avio_reading \
+EXAMPLES= avio_list_dir \
+ avio_reading \
decoding_encoding \
demuxing_decoding \
extract_mvs \
diff --git a/doc/examples/avio_list_dir.c b/doc/examples/avio_list_dir.c
new file mode 100644
index 0000000..d0e8598
--- /dev/null
+++ b/doc/examples/avio_list_dir.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2014 Lukasz Marek
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <libavcodec/avcodec.h>
+#include <libavformat/avformat.h>
+#include <libavformat/avio.h>
+
+static const char *type_string(int type)
+{
+ switch (type) {
+ case AVIO_ENTRY_DIRECTORY:
+ return "<DIR>";
+ case AVIO_ENTRY_FILE:
+ return "<FILE>";
+ case AVIO_ENTRY_BLOCK_DEVICE:
+ return "<BLOCK DEVICE>";
+ case AVIO_ENTRY_CHARACTER_DEVICE:
+ return "<CHARACTER DEVICE>";
+ case AVIO_ENTRY_NAMED_PIPE:
+ return "<PIPE>";
+ case AVIO_ENTRY_SYMBOLIC_LINK:
+ return "<LINK>";
+ case AVIO_ENTRY_SOCKET:
+ return "<SOCKET>";
+ case AVIO_ENTRY_UNKNOWN:
+ default:
+ break;
+ }
+ return "<UNKNOWN>";
+}
+
+int main(int argc, char *argv[])
+{
+ const char *input_dir = NULL;
+ AVIODirEntry *entry = NULL;
+ AVIODirContext *ctx = NULL;
+ int ret;
+ char filemode[4];
+
+ av_log_set_level(AV_LOG_DEBUG);
+
+ if (argc != 2) {
+ fprintf(stderr, "usage: %s input_dir\n"
+ "API example program to show how to list files in directory "
+ "accessed through AVIOContext.\n", argv[0]);
+ return 1;
+ }
+ input_dir = argv[1];
+
+ /* register codecs and formats and other lavf/lavc components*/
+ av_register_all();
+
+ if ((ret = avio_open_dir(&ctx, input_dir, NULL)) < 0) {
+ av_log(NULL, AV_LOG_ERROR, "Cannot open directory: %s.\n", av_err2str(ret));
+ return 1;
+ }
+
+ for (;;) {
+ if ((ret = avio_read_dir(ctx, &entry)) < 0) {
+ av_log(NULL, AV_LOG_ERROR, "Cannot list directory: %s.\n", av_err2str(ret));
+ return 1;
+ }
+ if (!entry)
+ break;
+ if (entry->filemode == -1) {
+ snprintf(filemode, 4, "???");
+ } else {
+ snprintf(filemode, 4, "%3"PRIo64, entry->filemode);
+ }
+ av_log(NULL, AV_LOG_INFO, "%-9s %10"PRId64" %30s %"PRId64"(%"PRId64") %s %"PRId64" %"PRId64" %"PRId64"\n",
+ type_string(entry->type),
+ entry->size,
+ entry->name,
+ entry->user_id,
+ entry->group_id,
+ filemode,
+ entry->modification_timestamp,
+ entry->access_timestamp,
+ entry->status_change_timestamp);
+ avio_free_directory_entry(&entry);
+ };
+
+ avio_close_dir(&ctx);
+
+ return 0;
+}
--
2.3.3
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