making act segmenter

1 files changed, 130 insertions, 0 deletions

diff --git a/ffmpeg/libavformat/md5enc.c b/ffmpeg/libavformat/md5enc.c
new file mode 100644
index 0000000..050efb1
--- /dev/null
+++ b/ffmpeg/libavformat/md5enc.c
@@ -0,0 +1,130 @@
+/*
+ * MD5 encoder (for codec/format testing)
+ * Copyright (c) 2009 Reimar Döffinger, based on crcenc (c) 2002 Fabrice Bellard
+ *
+ * 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 "libavutil/md5.h"
+#include "avformat.h"
+#include "internal.h"
+
+struct MD5Context {
+    struct AVMD5 *md5;
+};
+
+static void md5_finish(struct AVFormatContext *s, char *buf)
+{
+    struct MD5Context *c = s->priv_data;
+    uint8_t md5[16];
+    int i, offset = strlen(buf);
+    av_md5_final(c->md5, md5);
+    for (i = 0; i < sizeof(md5); i++) {
+        snprintf(buf + offset, 3, "%02"PRIx8, md5[i]);
+        offset += 2;
+    }
+    buf[offset] = '\n';
+    buf[offset+1] = 0;
+
+    avio_write(s->pb, buf, strlen(buf));
+    avio_flush(s->pb);
+}
+
+#if CONFIG_MD5_MUXER
+static int write_header(struct AVFormatContext *s)
+{
+    struct MD5Context *c = s->priv_data;
+    c->md5 = av_md5_alloc();
+    if (!c->md5)
+        return AVERROR(ENOMEM);
+    av_md5_init(c->md5);
+    return 0;
+}
+
+static int write_packet(struct AVFormatContext *s, AVPacket *pkt)
+{
+    struct MD5Context *c = s->priv_data;
+    av_md5_update(c->md5, pkt->data, pkt->size);
+    return 0;
+}
+
+static int write_trailer(struct AVFormatContext *s)
+{
+    struct MD5Context *c = s->priv_data;
+    char buf[64] = "MD5=";
+
+    md5_finish(s, buf);
+
+    av_freep(&c->md5);
+    return 0;
+}
+
+AVOutputFormat ff_md5_muxer = {
+    .name              = "md5",
+    .long_name         = NULL_IF_CONFIG_SMALL("MD5 testing"),
+    .priv_data_size    = sizeof(struct MD5Context),
+    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
+    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+    .write_header      = write_header,
+    .write_packet      = write_packet,
+    .write_trailer     = write_trailer,
+    .flags             = AVFMT_NOTIMESTAMPS,
+};
+#endif
+
+#if CONFIG_FRAMEMD5_MUXER
+static int framemd5_write_header(struct AVFormatContext *s)
+{
+    struct MD5Context *c = s->priv_data;
+    c->md5 = av_md5_alloc();
+    if (!c->md5)
+        return AVERROR(ENOMEM);
+    return ff_framehash_write_header(s);
+}
+
+static int framemd5_write_packet(struct AVFormatContext *s, AVPacket *pkt)
+{
+    struct MD5Context *c = s->priv_data;
+    char buf[256];
+    av_md5_init(c->md5);
+    av_md5_update(c->md5, pkt->data, pkt->size);
+
+    snprintf(buf, sizeof(buf) - 64, "%d, %10"PRId64", %10"PRId64", %8d, %8d, ",
+             pkt->stream_index, pkt->dts, pkt->pts, pkt->duration, pkt->size);
+    md5_finish(s, buf);
+    return 0;
+}
+
+static int framemd5_write_trailer(struct AVFormatContext *s)
+{
+    struct MD5Context *c = s->priv_data;
+    av_freep(&c->md5);
+    return 0;
+}
+
+AVOutputFormat ff_framemd5_muxer = {
+    .name              = "framemd5",
+    .long_name         = NULL_IF_CONFIG_SMALL("Per-frame MD5 testing"),
+    .priv_data_size    = sizeof(struct MD5Context),
+    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
+    .video_codec       = AV_CODEC_ID_RAWVIDEO,
+    .write_header      = framemd5_write_header,
+    .write_packet      = framemd5_write_packet,
+    .write_trailer     = framemd5_write_trailer,
+    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT,
+};
+#endif