making act segmenter

1 files changed, 137 insertions, 0 deletions

diff --git a/ffmpeg/tools/pktdumper.c b/ffmpeg/tools/pktdumper.c
new file mode 100644
index 0000000..920397b
--- /dev/null
+++ b/ffmpeg/tools/pktdumper.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2005 Francois Revol
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include <limits.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if HAVE_IO_H
+#include <io.h>
+#endif
+
+#define FILENAME_BUF_SIZE 4096
+
+#include "libavutil/avstring.h"
+#include "libavutil/time.h"
+#include "libavformat/avformat.h"
+
+#define PKTFILESUFF "_%08" PRId64 "_%02d_%010" PRId64 "_%06d_%c.bin"
+
+static int usage(int ret)
+{
+    fprintf(stderr, "dump (up to maxpkts) AVPackets as they are demuxed by libavformat.\n");
+    fprintf(stderr, "each packet is dumped in its own file named like `basename file.ext`_$PKTNUM_$STREAMINDEX_$STAMP_$SIZE_$FLAGS.bin\n");
+    fprintf(stderr, "pktdumper [-nw] file [maxpkts]\n");
+    fprintf(stderr, "-n\twrite No file at all, only demux.\n");
+    fprintf(stderr, "-w\tWait at end of processing instead of quitting.\n");
+    return ret;
+}
+
+int main(int argc, char **argv)
+{
+    char fntemplate[FILENAME_BUF_SIZE];
+    char pktfilename[FILENAME_BUF_SIZE];
+    AVFormatContext *fctx = NULL;
+    AVPacket pkt;
+    int64_t pktnum  = 0;
+    int64_t maxpkts = 0;
+    int donotquit   = 0;
+    int nowrite     = 0;
+    int err;
+
+    if ((argc > 1) && !strncmp(argv[1], "-", 1)) {
+        if (strchr(argv[1], 'w'))
+            donotquit = 1;
+        if (strchr(argv[1], 'n'))
+            nowrite = 1;
+        argv++;
+        argc--;
+    }
+    if (argc < 2)
+        return usage(1);
+    if (argc > 2)
+        maxpkts = atoi(argv[2]);
+    av_strlcpy(fntemplate, argv[1], sizeof(fntemplate));
+    if (strrchr(argv[1], '/'))
+        av_strlcpy(fntemplate, strrchr(argv[1], '/') + 1, sizeof(fntemplate));
+    if (strrchr(fntemplate, '.'))
+        *strrchr(fntemplate, '.') = '\0';
+    if (strchr(fntemplate, '%')) {
+        fprintf(stderr, "can't use filenames containing '%%'\n");
+        return usage(1);
+    }
+    if (strlen(fntemplate) + sizeof(PKTFILESUFF) >= sizeof(fntemplate) - 1) {
+        fprintf(stderr, "filename too long\n");
+        return usage(1);
+    }
+    strcat(fntemplate, PKTFILESUFF);
+    printf("FNTEMPLATE: '%s'\n", fntemplate);
+
+    // register all file formats
+    av_register_all();
+
+    err = avformat_open_input(&fctx, argv[1], NULL, NULL);
+    if (err < 0) {
+        fprintf(stderr, "cannot open input: error %d\n", err);
+        return 1;
+    }
+
+    err = avformat_find_stream_info(fctx, NULL);
+    if (err < 0) {
+        fprintf(stderr, "avformat_find_stream_info: error %d\n", err);
+        return 1;
+    }
+
+    av_init_packet(&pkt);
+
+    while ((err = av_read_frame(fctx, &pkt)) >= 0) {
+        int fd;
+        snprintf(pktfilename, sizeof(pktfilename), fntemplate, pktnum,
+                 pkt.stream_index, pkt.pts, pkt.size,
+                 (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
+        printf(PKTFILESUFF "\n", pktnum, pkt.stream_index, pkt.pts, pkt.size,
+               (pkt.flags & AV_PKT_FLAG_KEY) ? 'K' : '_');
+        if (!nowrite) {
+            fd  = open(pktfilename, O_WRONLY | O_CREAT, 0644);
+            err = write(fd, pkt.data, pkt.size);
+            if (err < 0) {
+                fprintf(stderr, "write: error %d\n", err);
+                return 1;
+            }
+            close(fd);
+        }
+        av_free_packet(&pkt);
+        pktnum++;
+        if (maxpkts && (pktnum >= maxpkts))
+            break;
+    }
+
+    avformat_close_input(&fctx);
+
+    while (donotquit)
+        av_usleep(60 * 1000000);
+
+    return 0;
+}