making act segmenter

1 files changed, 202 insertions, 0 deletions

diff --git a/ffmpeg/libavformat/oggparseogm.c b/ffmpeg/libavformat/oggparseogm.c
new file mode 100644
index 0000000..a3caac0
--- /dev/null
+++ b/ffmpeg/libavformat/oggparseogm.c
@@ -0,0 +1,202 @@
+/**
+    Copyright (C) 2005  Michael Ahlberg, Måns Rullgård
+
+    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 <stdlib.h>
+#include "libavutil/avassert.h"
+#include "libavutil/intreadwrite.h"
+#include "libavcodec/get_bits.h"
+#include "libavcodec/bytestream.h"
+#include "avformat.h"
+#include "internal.h"
+#include "oggdec.h"
+#include "riff.h"
+
+static int
+ogm_header(AVFormatContext *s, int idx)
+{
+    struct ogg *ogg = s->priv_data;
+    struct ogg_stream *os = ogg->streams + idx;
+    AVStream *st = s->streams[idx];
+    const uint8_t *p = os->buf + os->pstart;
+    uint64_t time_unit;
+    uint64_t spu;
+    uint32_t size;
+
+    if(!(*p & 1))
+        return 0;
+
+    if(*p == 1) {
+        p++;
+
+        if(*p == 'v'){
+            int tag;
+            st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+            p += 8;
+            tag = bytestream_get_le32(&p);
+            st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag);
+            st->codec->codec_tag = tag;
+        } else if (*p == 't') {
+            st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
+            st->codec->codec_id = AV_CODEC_ID_TEXT;
+            p += 12;
+        } else {
+            uint8_t acid[5];
+            int cid;
+            st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+            p += 8;
+            bytestream_get_buffer(&p, acid, 4);
+            acid[4] = 0;
+            cid = strtol(acid, NULL, 16);
+            st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
+            // our parser completely breaks AAC in Ogg
+            if (st->codec->codec_id != AV_CODEC_ID_AAC)
+                st->need_parsing = AVSTREAM_PARSE_FULL;
+        }
+
+        size        = bytestream_get_le32(&p);
+        size        = FFMIN(size, os->psize);
+        time_unit   = bytestream_get_le64(&p);
+        spu         = bytestream_get_le64(&p);
+        p += 4;                     /* default_len */
+        p += 8;                     /* buffersize + bits_per_sample */
+
+        if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
+            st->codec->width = bytestream_get_le32(&p);
+            st->codec->height = bytestream_get_le32(&p);
+            avpriv_set_pts_info(st, 64, time_unit, spu * 10000000);
+        } else {
+            st->codec->channels = bytestream_get_le16(&p);
+            p += 2;                 /* block_align */
+            st->codec->bit_rate = bytestream_get_le32(&p) * 8;
+            st->codec->sample_rate = time_unit ? spu * 10000000 / time_unit : 0;
+            avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
+            if (size >= 56 && st->codec->codec_id == AV_CODEC_ID_AAC) {
+                p += 4;
+                size -= 4;
+            }
+            if (size > 52) {
+                av_assert0(FF_INPUT_BUFFER_PADDING_SIZE <= 52);
+                size -= 52;
+                st->codec->extradata_size = size;
+                st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
+                bytestream_get_buffer(&p, st->codec->extradata, size);
+            }
+        }
+    } else if (*p == 3) {
+        if (os->psize > 8)
+            ff_vorbis_comment(s, &st->metadata, p+7, os->psize-8);
+    }
+
+    return 1;
+}
+
+static int
+ogm_dshow_header(AVFormatContext *s, int idx)
+{
+    struct ogg *ogg = s->priv_data;
+    struct ogg_stream *os = ogg->streams + idx;
+    AVStream *st = s->streams[idx];
+    uint8_t *p = os->buf + os->pstart;
+    uint32_t t;
+
+    if(!(*p & 1))
+        return 0;
+    if(*p != 1)
+        return 1;
+
+    t = AV_RL32(p + 96);
+
+    if(t == 0x05589f80){
+        st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+        st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
+        avpriv_set_pts_info(st, 64, AV_RL64(p + 164), 10000000);
+        st->codec->width = AV_RL32(p + 176);
+        st->codec->height = AV_RL32(p + 180);
+    } else if(t == 0x05589f81){
+        st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+        st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
+        st->codec->channels = AV_RL16(p + 126);
+        st->codec->sample_rate = AV_RL32(p + 128);
+        st->codec->bit_rate = AV_RL32(p + 132) * 8;
+    }
+
+    return 1;
+}
+
+static int
+ogm_packet(AVFormatContext *s, int idx)
+{
+    struct ogg *ogg = s->priv_data;
+    struct ogg_stream *os = ogg->streams + idx;
+    uint8_t *p = os->buf + os->pstart;
+    int lb;
+
+    if(*p & 8)
+        os->pflags |= AV_PKT_FLAG_KEY;
+
+    lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
+    os->pstart += lb + 1;
+    os->psize -= lb + 1;
+
+    while (lb--)
+        os->pduration += p[lb+1] << (lb*8);
+
+    return 0;
+}
+
+const struct ogg_codec ff_ogm_video_codec = {
+    .magic = "\001video",
+    .magicsize = 6,
+    .header = ogm_header,
+    .packet = ogm_packet,
+    .granule_is_start = 1,
+    .nb_header = 2,
+};
+
+const struct ogg_codec ff_ogm_audio_codec = {
+    .magic = "\001audio",
+    .magicsize = 6,
+    .header = ogm_header,
+    .packet = ogm_packet,
+    .granule_is_start = 1,
+    .nb_header = 2,
+};
+
+const struct ogg_codec ff_ogm_text_codec = {
+    .magic = "\001text",
+    .magicsize = 5,
+    .header = ogm_header,
+    .packet = ogm_packet,
+    .granule_is_start = 1,
+    .nb_header = 2,
+};
+
+const struct ogg_codec ff_ogm_old_codec = {
+    .magic = "\001Direct Show Samples embedded in Ogg",
+    .magicsize = 35,
+    .header = ogm_dshow_header,
+    .packet = ogm_packet,
+    .granule_is_start = 1,
+    .nb_header = 1,
+};