making act segmenter

1 files changed, 0 insertions, 1553 deletions

diff --git a/ffmpeg1/libavformat/asfdec.c b/ffmpeg1/libavformat/asfdec.c
deleted file mode 100644
index 1d7f26c..0000000
--- a/ffmpeg1/libavformat/asfdec.c
+++ /dev/null
@@ -1,1553 +0,0 @@
-/*
- * ASF compatible demuxer
- * Copyright (c) 2000, 2001 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
- */
-
-//#define DEBUG
-
-#include "libavutil/attributes.h"
-#include "libavutil/avassert.h"
-#include "libavutil/avstring.h"
-#include "libavutil/bswap.h"
-#include "libavutil/common.h"
-#include "libavutil/dict.h"
-#include "libavutil/mathematics.h"
-#include "libavutil/opt.h"
-#include "avformat.h"
-#include "avio_internal.h"
-#include "avlanguage.h"
-#include "id3v2.h"
-#include "internal.h"
-#include "riff.h"
-#include "asf.h"
-#include "asfcrypt.h"
-
-typedef struct {
-    const AVClass *class;
-    int asfid2avid[128];                 ///< conversion table from asf ID 2 AVStream ID
-    ASFStream streams[128];              ///< it's max number and it's not that big
-    uint32_t stream_bitrates[128];       ///< max number of streams, bitrate for each (for streaming)
-    AVRational dar[128];
-    char stream_languages[128][6];       ///< max number of streams, language for each (RFC1766, e.g. en-US)
-    /* non streamed additonnal info */
-    /* packet filling */
-    int packet_size_left;
-    /* only for reading */
-    uint64_t data_offset;                ///< beginning of the first data packet
-    uint64_t data_object_offset;         ///< data object offset (excl. GUID & size)
-    uint64_t data_object_size;           ///< size of the data object
-    int index_read;
-
-    ASFMainHeader hdr;
-
-    int packet_flags;
-    int packet_property;
-    int packet_timestamp;
-    int packet_segsizetype;
-    int packet_segments;
-    int packet_seq;
-    int packet_replic_size;
-    int packet_key_frame;
-    int packet_padsize;
-    unsigned int packet_frag_offset;
-    unsigned int packet_frag_size;
-    int64_t packet_frag_timestamp;
-    int packet_multi_size;
-    int packet_obj_size;
-    int packet_time_delta;
-    int packet_time_start;
-    int64_t packet_pos;
-
-    int stream_index;
-
-    ASFStream *asf_st;                   ///< currently decoded stream
-
-    int no_resync_search;
-} ASFContext;
-
-static const AVOption options[] = {
-    { "no_resync_search", "Don't try to resynchronize by looking for a certain optional start code", offsetof(ASFContext, no_resync_search), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
-    { NULL },
-};
-
-static const AVClass asf_class = {
-    .class_name = "asf demuxer",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
-
-#undef NDEBUG
-#include <assert.h>
-
-#define ASF_MAX_STREAMS 127
-#define FRAME_HEADER_SIZE 16
-// Fix Me! FRAME_HEADER_SIZE may be different. (17 is known to be too large)
-
-#ifdef DEBUG
-static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
-    0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
-};
-
-#define PRINT_IF_GUID(g, cmp) \
-    if (!ff_guidcmp(g, &cmp)) \
-        av_dlog(NULL, "(GUID: %s) ", # cmp)
-
-static void print_guid(ff_asf_guid *g)
-{
-    int i;
-    PRINT_IF_GUID(g, ff_asf_header);
-    else PRINT_IF_GUID(g, ff_asf_file_header);
-    else PRINT_IF_GUID(g, ff_asf_stream_header);
-    else PRINT_IF_GUID(g, ff_asf_audio_stream);
-    else PRINT_IF_GUID(g, ff_asf_audio_conceal_none);
-    else PRINT_IF_GUID(g, ff_asf_video_stream);
-    else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
-    else PRINT_IF_GUID(g, ff_asf_command_stream);
-    else PRINT_IF_GUID(g, ff_asf_comment_header);
-    else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
-    else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
-    else PRINT_IF_GUID(g, ff_asf_data_header);
-    else PRINT_IF_GUID(g, ff_asf_simple_index_header);
-    else PRINT_IF_GUID(g, ff_asf_head1_guid);
-    else PRINT_IF_GUID(g, ff_asf_head2_guid);
-    else PRINT_IF_GUID(g, ff_asf_my_guid);
-    else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
-    else PRINT_IF_GUID(g, ff_asf_extended_content_header);
-    else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
-    else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
-    else PRINT_IF_GUID(g, ff_asf_metadata_header);
-    else PRINT_IF_GUID(g, ff_asf_metadata_library_header);
-    else PRINT_IF_GUID(g, ff_asf_marker_header);
-    else PRINT_IF_GUID(g, stream_bitrate_guid);
-    else PRINT_IF_GUID(g, ff_asf_language_guid);
-    else
-        av_dlog(NULL, "(GUID: unknown) ");
-    for (i = 0; i < 16; i++)
-        av_dlog(NULL, " 0x%02x,", (*g)[i]);
-    av_dlog(NULL, "}\n");
-}
-#undef PRINT_IF_GUID
-#else
-#define print_guid(g)
-#endif
-
-static int asf_probe(AVProbeData *pd)
-{
-    /* check file header */
-    if (!ff_guidcmp(pd->buf, &ff_asf_header))
-        return AVPROBE_SCORE_MAX;
-    else
-        return 0;
-}
-
-/* size of type 2 (BOOL) is 32bit for "Extended Content Description Object"
- * but 16 bit for "Metadata Object" and "Metadata Library Object" */
-static int get_value(AVIOContext *pb, int type, int type2_size)
-{
-    switch (type) {
-    case 2:
-        return (type2_size == 32) ? avio_rl32(pb) : avio_rl16(pb);
-    case 3:
-        return avio_rl32(pb);
-    case 4:
-        return avio_rl64(pb);
-    case 5:
-        return avio_rl16(pb);
-    default:
-        return INT_MIN;
-    }
-}
-
-/* MSDN claims that this should be "compatible with the ID3 frame, APIC",
- * but in reality this is only loosely similar */
-static int asf_read_picture(AVFormatContext *s, int len)
-{
-    AVPacket pkt          = { 0 };
-    const CodecMime *mime = ff_id3v2_mime_tags;
-    enum  AVCodecID id    = AV_CODEC_ID_NONE;
-    char mimetype[64];
-    uint8_t  *desc = NULL;
-    AVStream   *st = NULL;
-    int ret, type, picsize, desc_len;
-
-    /* type + picsize + mime + desc */
-    if (len < 1 + 4 + 2 + 2) {
-        av_log(s, AV_LOG_ERROR, "Invalid attached picture size: %d.\n", len);
-        return AVERROR_INVALIDDATA;
-    }
-
-    /* picture type */
-    type = avio_r8(s->pb);
-    len--;
-    if (type >= FF_ARRAY_ELEMS(ff_id3v2_picture_types) || type < 0) {
-        av_log(s, AV_LOG_WARNING, "Unknown attached picture type: %d.\n", type);
-        type = 0;
-    }
-
-    /* picture data size */
-    picsize = avio_rl32(s->pb);
-    len    -= 4;
-
-    /* picture MIME type */
-    len -= avio_get_str16le(s->pb, len, mimetype, sizeof(mimetype));
-    while (mime->id != AV_CODEC_ID_NONE) {
-        if (!strncmp(mime->str, mimetype, sizeof(mimetype))) {
-            id = mime->id;
-            break;
-        }
-        mime++;
-    }
-    if (id == AV_CODEC_ID_NONE) {
-        av_log(s, AV_LOG_ERROR, "Unknown attached picture mimetype: %s.\n",
-               mimetype);
-        return 0;
-    }
-
-    if (picsize >= len) {
-        av_log(s, AV_LOG_ERROR, "Invalid attached picture data size: %d >= %d.\n",
-               picsize, len);
-        return AVERROR_INVALIDDATA;
-    }
-
-    /* picture description */
-    desc_len = (len - picsize) * 2 + 1;
-    desc     = av_malloc(desc_len);
-    if (!desc)
-        return AVERROR(ENOMEM);
-    len -= avio_get_str16le(s->pb, len - picsize, desc, desc_len);
-
-    ret = av_get_packet(s->pb, &pkt, picsize);
-    if (ret < 0)
-        goto fail;
-
-    st  = avformat_new_stream(s, NULL);
-    if (!st) {
-        ret = AVERROR(ENOMEM);
-        goto fail;
-    }
-    st->disposition              |= AV_DISPOSITION_ATTACHED_PIC;
-    st->codec->codec_type         = AVMEDIA_TYPE_VIDEO;
-    st->codec->codec_id           = id;
-    st->attached_pic              = pkt;
-    st->attached_pic.stream_index = st->index;
-    st->attached_pic.flags       |= AV_PKT_FLAG_KEY;
-
-    if (*desc)
-        av_dict_set(&st->metadata, "title", desc, AV_DICT_DONT_STRDUP_VAL);
-    else
-        av_freep(&desc);
-
-    av_dict_set(&st->metadata, "comment", ff_id3v2_picture_types[type], 0);
-
-    return 0;
-
-fail:
-    av_freep(&desc);
-    av_free_packet(&pkt);
-    return ret;
-}
-
-static void get_id3_tag(AVFormatContext *s, int len)
-{
-    ID3v2ExtraMeta *id3v2_extra_meta = NULL;
-
-    ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
-    if (id3v2_extra_meta)
-        ff_id3v2_parse_apic(s, &id3v2_extra_meta);
-    ff_id3v2_free_extra_meta(&id3v2_extra_meta);
-}
-
-static void get_tag(AVFormatContext *s, const char *key, int type, int len, int type2_size)
-{
-    char *value;
-    int64_t off = avio_tell(s->pb);
-#define LEN 22
-
-    if ((unsigned)len >= (UINT_MAX - LEN) / 2)
-        return;
-
-    value = av_malloc(2 * len + LEN);
-    if (!value)
-        goto finish;
-
-    if (type == 0) {         // UTF16-LE
-        avio_get_str16le(s->pb, len, value, 2 * len + 1);
-    } else if (type == -1) { // ASCII
-        avio_read(s->pb, value, len);
-        value[len]=0;
-    } else if (type == 1) {  // byte array
-        if (!strcmp(key, "WM/Picture")) { // handle cover art
-            asf_read_picture(s, len);
-        } else if (!strcmp(key, "ID3")) { // handle ID3 tag
-            get_id3_tag(s, len);
-        } else {
-            av_log(s, AV_LOG_VERBOSE, "Unsupported byte array in tag %s.\n", key);
-        }
-        goto finish;
-    } else if (type > 1 && type <= 5) {  // boolean or DWORD or QWORD or WORD
-        uint64_t num = get_value(s->pb, type, type2_size);
-        snprintf(value, LEN, "%"PRIu64, num);
-    } else if (type == 6) { // (don't) handle GUID
-        av_log(s, AV_LOG_DEBUG, "Unsupported GUID value in tag %s.\n", key);
-        goto finish;
-    } else {
-        av_log(s, AV_LOG_DEBUG,
-               "Unsupported value type %d in tag %s.\n", type, key);
-        goto finish;
-    }
-    if (*value)
-        av_dict_set(&s->metadata, key, value, 0);
-
-finish:
-    av_freep(&value);
-    avio_seek(s->pb, off + len, SEEK_SET);
-}
-
-static int asf_read_file_properties(AVFormatContext *s, int64_t size)
-{
-    ASFContext *asf = s->priv_data;
-    AVIOContext *pb = s->pb;
-
-    ff_get_guid(pb, &asf->hdr.guid);
-    asf->hdr.file_size   = avio_rl64(pb);
-    asf->hdr.create_time = avio_rl64(pb);
-    avio_rl64(pb);                               /* number of packets */
-    asf->hdr.play_time   = avio_rl64(pb);
-    asf->hdr.send_time   = avio_rl64(pb);
-    asf->hdr.preroll     = avio_rl32(pb);
-    asf->hdr.ignore      = avio_rl32(pb);
-    asf->hdr.flags       = avio_rl32(pb);
-    asf->hdr.min_pktsize = avio_rl32(pb);
-    asf->hdr.max_pktsize = avio_rl32(pb);
-    if (asf->hdr.min_pktsize >= (1U << 29))
-        return AVERROR_INVALIDDATA;
-    asf->hdr.max_bitrate = avio_rl32(pb);
-    s->packet_size       = asf->hdr.max_pktsize;
-
-    return 0;
-}
-
-static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
-{
-    ASFContext *asf = s->priv_data;
-    AVIOContext *pb = s->pb;
-    AVStream *st;
-    ASFStream *asf_st;
-    ff_asf_guid g;
-    enum AVMediaType type;
-    int type_specific_size, sizeX;
-    unsigned int tag1;
-    int64_t pos1, pos2, start_time;
-    int test_for_ext_stream_audio, is_dvr_ms_audio = 0;
-
-    if (s->nb_streams == ASF_MAX_STREAMS) {
-        av_log(s, AV_LOG_ERROR, "too many streams\n");
-        return AVERROR(EINVAL);
-    }
-
-    pos1 = avio_tell(pb);
-
-    st = avformat_new_stream(s, NULL);
-    if (!st)
-        return AVERROR(ENOMEM);
-    avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
-    asf_st = av_mallocz(sizeof(ASFStream));
-    if (!asf_st)
-        return AVERROR(ENOMEM);
-    st->priv_data  = asf_st;
-    start_time     = asf->hdr.preroll;
-
-    asf_st->stream_language_index = 128; // invalid stream index means no language info
-
-    if (!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
-        int64_t fsize = avio_size(pb);
-        if (fsize <= 0 || (int64_t)asf->hdr.file_size <= 0 || FFABS(fsize - (int64_t)asf->hdr.file_size) < 10000)
-            st->duration = asf->hdr.play_time /
-                       (10000000 / 1000) - start_time;
-    }
-    ff_get_guid(pb, &g);
-
-    test_for_ext_stream_audio = 0;
-    if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
-        type = AVMEDIA_TYPE_AUDIO;
-    } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
-        type = AVMEDIA_TYPE_VIDEO;
-    } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
-        type                = AVMEDIA_TYPE_VIDEO;
-        st->codec->codec_id = AV_CODEC_ID_MJPEG;
-    } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
-        type = AVMEDIA_TYPE_DATA;
-    } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
-        test_for_ext_stream_audio = 1;
-        type                      = AVMEDIA_TYPE_UNKNOWN;
-    } else {
-        return -1;
-    }
-    ff_get_guid(pb, &g);
-    avio_skip(pb, 8); /* total_size */
-    type_specific_size = avio_rl32(pb);
-    avio_rl32(pb);
-    st->id = avio_rl16(pb) & 0x7f; /* stream id */
-    // mapping of asf ID to AV stream ID;
-    asf->asfid2avid[st->id] = s->nb_streams - 1;
-
-    avio_rl32(pb);
-
-    if (test_for_ext_stream_audio) {
-        ff_get_guid(pb, &g);
-        if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
-            type            = AVMEDIA_TYPE_AUDIO;
-            is_dvr_ms_audio = 1;
-            ff_get_guid(pb, &g);
-            avio_rl32(pb);
-            avio_rl32(pb);
-            avio_rl32(pb);
-            ff_get_guid(pb, &g);
-            avio_rl32(pb);
-        }
-    }
-
-    st->codec->codec_type = type;
-    if (type == AVMEDIA_TYPE_AUDIO) {
-        int ret = ff_get_wav_header(pb, st->codec, type_specific_size);
-        if (ret < 0)
-            return ret;
-        if (is_dvr_ms_audio) {
-            // codec_id and codec_tag are unreliable in dvr_ms
-            // files. Set them later by probing stream.
-            st->request_probe    = 1;
-            st->codec->codec_tag = 0;
-        }
-        if (st->codec->codec_id == AV_CODEC_ID_AAC)
-            st->need_parsing = AVSTREAM_PARSE_NONE;
-        else
-            st->need_parsing = AVSTREAM_PARSE_FULL;
-        /* We have to init the frame size at some point .... */
-        pos2 = avio_tell(pb);
-        if (size >= (pos2 + 8 - pos1 + 24)) {
-            asf_st->ds_span        = avio_r8(pb);
-            asf_st->ds_packet_size = avio_rl16(pb);
-            asf_st->ds_chunk_size  = avio_rl16(pb);
-            avio_rl16(pb);  // ds_data_size
-            avio_r8(pb);    // ds_silence_data
-        }
-        if (asf_st->ds_span > 1) {
-            if (!asf_st->ds_chunk_size                                ||
-                (asf_st->ds_packet_size / asf_st->ds_chunk_size <= 1) ||
-                asf_st->ds_packet_size % asf_st->ds_chunk_size)
-                asf_st->ds_span = 0;  // disable descrambling
-        }
-    } else if (type == AVMEDIA_TYPE_VIDEO &&
-               size - (avio_tell(pb) - pos1 + 24) >= 51) {
-        avio_rl32(pb);
-        avio_rl32(pb);
-        avio_r8(pb);
-        avio_rl16(pb);        /* size */
-        sizeX             = avio_rl32(pb); /* size */
-        st->codec->width  = avio_rl32(pb);
-        st->codec->height = avio_rl32(pb);
-        /* not available for asf */
-        avio_rl16(pb); /* panes */
-        st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
-        tag1                             = avio_rl32(pb);
-        avio_skip(pb, 20);
-        if (sizeX > 40) {
-            st->codec->extradata_size = ffio_limit(pb, sizeX - 40);
-            st->codec->extradata      = av_mallocz(st->codec->extradata_size +
-                                                   FF_INPUT_BUFFER_PADDING_SIZE);
-            avio_read(pb, st->codec->extradata, st->codec->extradata_size);
-        }
-
-        /* Extract palette from extradata if bpp <= 8 */
-        /* This code assumes that extradata contains only palette */
-        /* This is true for all paletted codecs implemented in libavcodec */
-        if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
-#if HAVE_BIGENDIAN
-            int i;
-            for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE) / 4; i++)
-                asf_st->palette[i] = av_bswap32(((uint32_t *)st->codec->extradata)[i]);
-#else
-            memcpy(asf_st->palette, st->codec->extradata,
-                   FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
-#endif
-            asf_st->palette_changed = 1;
-        }
-
-        st->codec->codec_tag = tag1;
-        st->codec->codec_id  = ff_codec_get_id(ff_codec_bmp_tags, tag1);
-        if (tag1 == MKTAG('D', 'V', 'R', ' ')) {
-            st->need_parsing = AVSTREAM_PARSE_FULL;
-            /* issue658 contains wrong w/h and MS even puts a fake seq header
-             * with wrong w/h in extradata while a correct one is in the stream.
-             * maximum lameness */
-            st->codec->width      =
-                st->codec->height = 0;
-            av_freep(&st->codec->extradata);
-            st->codec->extradata_size = 0;
-        }
-        if (st->codec->codec_id == AV_CODEC_ID_H264)
-            st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
-    }
-    pos2 = avio_tell(pb);
-    avio_skip(pb, size - (pos2 - pos1 + 24));
-
-    return 0;
-}
-
-static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
-{
-    ASFContext *asf = s->priv_data;
-    AVIOContext *pb = s->pb;
-    ff_asf_guid g;
-    int ext_len, payload_ext_ct, stream_ct, i;
-    uint32_t leak_rate, stream_num;
-    unsigned int stream_languageid_index;
-
-    avio_rl64(pb); // starttime
-    avio_rl64(pb); // endtime
-    leak_rate = avio_rl32(pb); // leak-datarate
-    avio_rl32(pb); // bucket-datasize
-    avio_rl32(pb); // init-bucket-fullness
-    avio_rl32(pb); // alt-leak-datarate
-    avio_rl32(pb); // alt-bucket-datasize
-    avio_rl32(pb); // alt-init-bucket-fullness
-    avio_rl32(pb); // max-object-size
-    avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
-    stream_num = avio_rl16(pb); // stream-num
-
-    stream_languageid_index = avio_rl16(pb); // stream-language-id-index
-    if (stream_num < 128)
-        asf->streams[stream_num].stream_language_index = stream_languageid_index;
-
-    avio_rl64(pb); // avg frametime in 100ns units
-    stream_ct      = avio_rl16(pb); // stream-name-count
-    payload_ext_ct = avio_rl16(pb); // payload-extension-system-count
-
-    if (stream_num < 128) {
-        asf->stream_bitrates[stream_num] = leak_rate;
-        asf->streams[stream_num].payload_ext_ct = 0;
-    }
-
-    for (i = 0; i < stream_ct; i++) {
-        avio_rl16(pb);
-        ext_len = avio_rl16(pb);
-        avio_skip(pb, ext_len);
-    }
-
-    for (i = 0; i < payload_ext_ct; i++) {
-        int size;
-        ff_get_guid(pb, &g);
-        size = avio_rl16(pb);
-        ext_len = avio_rl32(pb);
-        avio_skip(pb, ext_len);
-        if (stream_num < 128 && i < FF_ARRAY_ELEMS(asf->streams[stream_num].payload)) {
-            ASFPayload *p = &asf->streams[stream_num].payload[i];
-            p->type = g[0];
-            p->size = size;
-            av_log(s, AV_LOG_DEBUG, "Payload extension %x %d\n", g[0], p->size );
-            asf->streams[stream_num].payload_ext_ct ++;
-        }
-    }
-
-    return 0;
-}
-
-static int asf_read_content_desc(AVFormatContext *s, int64_t size)
-{
-    AVIOContext *pb = s->pb;
-    int len1, len2, len3, len4, len5;
-
-    len1 = avio_rl16(pb);
-    len2 = avio_rl16(pb);
-    len3 = avio_rl16(pb);
-    len4 = avio_rl16(pb);
-    len5 = avio_rl16(pb);
-    get_tag(s, "title", 0, len1, 32);
-    get_tag(s, "author", 0, len2, 32);
-    get_tag(s, "copyright", 0, len3, 32);
-    get_tag(s, "comment", 0, len4, 32);
-    avio_skip(pb, len5);
-
-    return 0;
-}
-
-static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
-{
-    AVIOContext *pb = s->pb;
-    ASFContext *asf = s->priv_data;
-    int desc_count, i, ret;
-
-    desc_count = avio_rl16(pb);
-    for (i = 0; i < desc_count; i++) {
-        int name_len, value_type, value_len;
-        char name[1024];
-
-        name_len = avio_rl16(pb);
-        if (name_len % 2)   // must be even, broken lavf versions wrote len-1
-            name_len += 1;
-        if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
-            avio_skip(pb, name_len - ret);
-        value_type = avio_rl16(pb);
-        value_len  = avio_rl16(pb);
-        if (!value_type && value_len % 2)
-            value_len += 1;
-        /* My sample has that stream set to 0 maybe that mean the container.
-         * ASF stream count starts at 1. I am using 0 to the container value
-         * since it's unused. */
-        if (!strcmp(name, "AspectRatioX"))
-            asf->dar[0].num = get_value(s->pb, value_type, 32);
-        else if (!strcmp(name, "AspectRatioY"))
-            asf->dar[0].den = get_value(s->pb, value_type, 32);
-        else
-            get_tag(s, name, value_type, value_len, 32);
-    }
-
-    return 0;
-}
-
-static int asf_read_language_list(AVFormatContext *s, int64_t size)
-{
-    AVIOContext *pb = s->pb;
-    ASFContext *asf = s->priv_data;
-    int j, ret;
-    int stream_count = avio_rl16(pb);
-    for (j = 0; j < stream_count; j++) {
-        char lang[6];
-        unsigned int lang_len = avio_r8(pb);
-        if ((ret = avio_get_str16le(pb, lang_len, lang,
-                                    sizeof(lang))) < lang_len)
-            avio_skip(pb, lang_len - ret);
-        if (j < 128)
-            av_strlcpy(asf->stream_languages[j], lang,
-                       sizeof(*asf->stream_languages));
-    }
-
-    return 0;
-}
-
-static int asf_read_metadata(AVFormatContext *s, int64_t size)
-{
-    AVIOContext *pb = s->pb;
-    ASFContext *asf = s->priv_data;
-    int n, stream_num, name_len, value_len;
-    int ret, i;
-    n = avio_rl16(pb);
-
-    for (i = 0; i < n; i++) {
-        char name[1024];
-        int value_type;
-
-        avio_rl16(pb);  // lang_list_index
-        stream_num = avio_rl16(pb);
-        name_len   = avio_rl16(pb);
-        value_type = avio_rl16(pb); /* value_type */
-        value_len  = avio_rl32(pb);
-
-        if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
-            avio_skip(pb, name_len - ret);
-        av_dlog(s, "%d stream %d name_len %2d type %d len %4d <%s>\n",
-                i, stream_num, name_len, value_type, value_len, name);
-
-        if (!strcmp(name, "AspectRatioX")){
-            int aspect_x = get_value(s->pb, value_type, 16);
-            if(stream_num < 128)
-                asf->dar[stream_num].num = aspect_x;
-        } else if(!strcmp(name, "AspectRatioY")){
-            int aspect_y = get_value(s->pb, value_type, 16);
-            if(stream_num < 128)
-                asf->dar[stream_num].den = aspect_y;
-        } else {
-            get_tag(s, name, value_type, value_len, 16);
-        }
-    }
-
-    return 0;
-}
-
-static int asf_read_marker(AVFormatContext *s, int64_t size)
-{
-    AVIOContext *pb = s->pb;
-    int i, count, name_len, ret;
-    char name[1024];
-
-    avio_rl64(pb);            // reserved 16 bytes
-    avio_rl64(pb);            // ...
-    count = avio_rl32(pb);    // markers count
-    avio_rl16(pb);            // reserved 2 bytes
-    name_len = avio_rl16(pb); // name length
-    for (i = 0; i < name_len; i++)
-        avio_r8(pb); // skip the name
-
-    for (i = 0; i < count; i++) {
-        int64_t pres_time;
-        int name_len;
-
-        avio_rl64(pb);             // offset, 8 bytes
-        pres_time = avio_rl64(pb); // presentation time
-        avio_rl16(pb);             // entry length
-        avio_rl32(pb);             // send time
-        avio_rl32(pb);             // flags
-        name_len = avio_rl32(pb);  // name length
-        if ((ret = avio_get_str16le(pb, name_len * 2, name,
-                                    sizeof(name))) < name_len)
-            avio_skip(pb, name_len - ret);
-        avpriv_new_chapter(s, i, (AVRational) { 1, 10000000 }, pres_time,
-                           AV_NOPTS_VALUE, name);
-    }
-
-    return 0;
-}
-
-static int asf_read_header(AVFormatContext *s)
-{
-    ASFContext *asf = s->priv_data;
-    ff_asf_guid g;
-    AVIOContext *pb = s->pb;
-    int i;
-    int64_t gsize;
-
-    ff_get_guid(pb, &g);
-    if (ff_guidcmp(&g, &ff_asf_header))
-        return AVERROR_INVALIDDATA;
-    avio_rl64(pb);
-    avio_rl32(pb);
-    avio_r8(pb);
-    avio_r8(pb);
-    memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
-    for (;;) {
-        uint64_t gpos = avio_tell(pb);
-        ff_get_guid(pb, &g);
-        gsize = avio_rl64(pb);
-        print_guid(&g);
-        if (!ff_guidcmp(&g, &ff_asf_data_header)) {
-            asf->data_object_offset = avio_tell(pb);
-            /* If not streaming, gsize is not unlimited (how?),
-             * and there is enough space in the file.. */
-            if (!(asf->hdr.flags & 0x01) && gsize >= 100)
-                asf->data_object_size = gsize - 24;
-            else
-                asf->data_object_size = (uint64_t)-1;
-            break;
-        }
-        if (gsize < 24)
-            return AVERROR_INVALIDDATA;
-        if (!ff_guidcmp(&g, &ff_asf_file_header)) {
-            int ret = asf_read_file_properties(s, gsize);
-            if (ret < 0)
-                return ret;
-        } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
-            asf_read_stream_properties(s, gsize);
-        } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
-            asf_read_content_desc(s, gsize);
-        } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
-            asf_read_language_list(s, gsize);
-        } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
-            asf_read_ext_content_desc(s, gsize);
-        } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
-            asf_read_metadata(s, gsize);
-        } else if (!ff_guidcmp(&g, &ff_asf_metadata_library_header)) {
-            asf_read_metadata(s, gsize);
-        } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
-            asf_read_ext_stream_properties(s, gsize);
-
-            // there could be a optional stream properties object to follow
-            // if so the next iteration will pick it up
-            continue;
-        } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
-            ff_get_guid(pb, &g);
-            avio_skip(pb, 6);
-            continue;
-        } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
-            asf_read_marker(s, gsize);
-        } else if (url_feof(pb)) {
-            return AVERROR_EOF;
-        } else {
-            if (!s->keylen) {
-                if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
-                    unsigned int len;
-                    AVPacket pkt;
-                    av_log(s, AV_LOG_WARNING,
-                           "DRM protected stream detected, decoding will likely fail!\n");
-                    len= avio_rl32(pb);
-                    av_log(s, AV_LOG_DEBUG, "Secret data:\n");
-                    av_get_packet(pb, &pkt, len); av_hex_dump_log(s, AV_LOG_DEBUG, pkt.data, pkt.size); av_free_packet(&pkt);
-                    len= avio_rl32(pb);
-                    get_tag(s, "ASF_Protection_Type", -1, len, 32);
-                    len= avio_rl32(pb);
-                    get_tag(s, "ASF_Key_ID", -1, len, 32);
-                    len= avio_rl32(pb);
-                    get_tag(s, "ASF_License_URL", -1, len, 32);
-                } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
-                    av_log(s, AV_LOG_WARNING,
-                           "Ext DRM protected stream detected, decoding will likely fail!\n");
-                    av_dict_set(&s->metadata, "encryption", "ASF Extended Content Encryption", 0);
-                } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
-                    av_log(s, AV_LOG_INFO, "Digital signature detected!\n");
-                }
-            }
-        }
-        if (avio_tell(pb) != gpos + gsize)
-            av_log(s, AV_LOG_DEBUG,
-                   "gpos mismatch our pos=%"PRIu64", end=%"PRId64"\n",
-                   avio_tell(pb) - gpos, gsize);
-        avio_seek(pb, gpos + gsize, SEEK_SET);
-    }
-    ff_get_guid(pb, &g);
-    avio_rl64(pb);
-    avio_r8(pb);
-    avio_r8(pb);
-    if (url_feof(pb))
-        return AVERROR_EOF;
-    asf->data_offset      = avio_tell(pb);
-    asf->packet_size_left = 0;
-
-    for (i = 0; i < 128; i++) {
-        int stream_num = asf->asfid2avid[i];
-        if (stream_num >= 0) {
-            AVStream *st = s->streams[stream_num];
-            if (!st->codec->bit_rate)
-                st->codec->bit_rate = asf->stream_bitrates[i];
-            if (asf->dar[i].num > 0 && asf->dar[i].den > 0) {
-                av_reduce(&st->sample_aspect_ratio.num,
-                          &st->sample_aspect_ratio.den,
-                          asf->dar[i].num, asf->dar[i].den, INT_MAX);
-            } else if ((asf->dar[0].num > 0) && (asf->dar[0].den > 0) &&
-                       // Use ASF container value if the stream doesn't set AR.
-                       (st->codec->codec_type == AVMEDIA_TYPE_VIDEO))
-                av_reduce(&st->sample_aspect_ratio.num,
-                          &st->sample_aspect_ratio.den,
-                          asf->dar[0].num, asf->dar[0].den, INT_MAX);
-
-            av_dlog(s, "i=%d, st->codec->codec_type:%d, asf->dar %d:%d sar=%d:%d\n",
-                    i, st->codec->codec_type, asf->dar[i].num, asf->dar[i].den,
-                    st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
-
-            // copy and convert language codes to the frontend
-            if (asf->streams[i].stream_language_index < 128) {
-                const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
-                if (rfc1766 && strlen(rfc1766) > 1) {
-                    const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
-                    const char *iso6392       = av_convert_lang_to(primary_tag,
-                                                                   AV_LANG_ISO639_2_BIBL);
-                    if (iso6392)
-                        av_dict_set(&st->metadata, "language", iso6392, 0);
-                }
-            }
-        }
-    }
-
-    ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
-
-    return 0;
-}
-
-#define DO_2BITS(bits, var, defval)             \
-    switch (bits & 3) {                         \
-    case 3:                                     \
-        var = avio_rl32(pb);                    \
-        rsize += 4;                             \
-        break;                                  \
-    case 2:                                     \
-        var = avio_rl16(pb);                    \
-        rsize += 2;                             \
-        break;                                  \
-    case 1:                                     \
-        var = avio_r8(pb);                      \
-        rsize++;                                \
-        break;                                  \
-    default:                                    \
-        var = defval;                           \
-        break;                                  \
-    }
-
-/**
- * Load a single ASF packet into the demuxer.
- * @param s demux context
- * @param pb context to read data from
- * @return 0 on success, <0 on error
- */
-static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
-{
-    ASFContext *asf = s->priv_data;
-    uint32_t packet_length, padsize;
-    int rsize = 8;
-    int c, d, e, off;
-
-    // if we do not know packet size, allow skipping up to 32 kB
-    off = 32768;
-    if (asf->no_resync_search)
-        off = 3;
-    else if (s->packet_size > 0)
-        off = (avio_tell(pb) - s->data_offset) % s->packet_size + 3;
-
-    c = d = e = -1;
-    while (off-- > 0) {
-        c = d;
-        d = e;
-        e = avio_r8(pb);
-        if (c == 0x82 && !d && !e)
-            break;
-    }
-
-    if (c != 0x82) {
-        /* This code allows handling of -EAGAIN at packet boundaries (i.e.
-         * if the packet sync code above triggers -EAGAIN). This does not
-         * imply complete -EAGAIN handling support at random positions in
-         * the stream. */
-        if (pb->error == AVERROR(EAGAIN))
-            return AVERROR(EAGAIN);
-        if (!url_feof(pb))
-            av_log(s, AV_LOG_ERROR,
-                   "ff asf bad header %x  at:%"PRId64"\n", c, avio_tell(pb));
-    }
-    if ((c & 0x8f) == 0x82) {
-        if (d || e) {
-            if (!url_feof(pb))
-                av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
-            return AVERROR_INVALIDDATA;
-        }
-        c      = avio_r8(pb);
-        d      = avio_r8(pb);
-        rsize += 3;
-    } else if(!url_feof(pb)) {
-        avio_seek(pb, -1, SEEK_CUR); // FIXME
-    }
-
-    asf->packet_flags    = c;
-    asf->packet_property = d;
-
-    DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
-    DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
-    DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
-
-    // the following checks prevent overflows and infinite loops
-    if (!packet_length || packet_length >= (1U << 29)) {
-        av_log(s, AV_LOG_ERROR,
-               "invalid packet_length %d at:%"PRId64"\n",
-               packet_length, avio_tell(pb));
-        return AVERROR_INVALIDDATA;
-    }
-    if (padsize >= packet_length) {
-        av_log(s, AV_LOG_ERROR,
-               "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
-        return AVERROR_INVALIDDATA;
-    }
-
-    asf->packet_timestamp = avio_rl32(pb);
-    avio_rl16(pb); /* duration */
-    // rsize has at least 11 bytes which have to be present
-
-    if (asf->packet_flags & 0x01) {
-        asf->packet_segsizetype = avio_r8(pb);
-        rsize++;
-        asf->packet_segments = asf->packet_segsizetype & 0x3f;
-    } else {
-        asf->packet_segments    = 1;
-        asf->packet_segsizetype = 0x80;
-    }
-    if (rsize > packet_length - padsize) {
-        asf->packet_size_left = 0;
-        av_log(s, AV_LOG_ERROR,
-               "invalid packet header length %d for pktlen %d-%d at %"PRId64"\n",
-               rsize, packet_length, padsize, avio_tell(pb));
-        return AVERROR_INVALIDDATA;
-    }
-    asf->packet_size_left = packet_length - padsize - rsize;
-    if (packet_length < asf->hdr.min_pktsize)
-        padsize += asf->hdr.min_pktsize - packet_length;
-    asf->packet_padsize = padsize;
-    av_dlog(s, "packet: size=%d padsize=%d  left=%d\n",
-            s->packet_size, asf->packet_padsize, asf->packet_size_left);
-    return 0;
-}
-
-/**
- *
- * @return <0 if error
- */
-static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb)
-{
-    ASFContext *asf = s->priv_data;
-    ASFStream *asfst;
-    int rsize       = 1;
-    int num         = avio_r8(pb);
-    int i;
-    int64_t ts0, ts1 av_unused;
-
-    asf->packet_segments--;
-    asf->packet_key_frame = num >> 7;
-    asf->stream_index     = asf->asfid2avid[num & 0x7f];
-    asfst                 = &asf->streams[num & 0x7f];
-    // sequence should be ignored!
-    DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
-    DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
-    DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
-    av_dlog(asf, "key:%d stream:%d seq:%d offset:%d replic_size:%d\n",
-            asf->packet_key_frame, asf->stream_index, asf->packet_seq,
-            asf->packet_frag_offset, asf->packet_replic_size);
-    if (rsize+(int64_t)asf->packet_replic_size > asf->packet_size_left) {
-        av_log(s, AV_LOG_ERROR, "packet_replic_size %d is invalid\n", asf->packet_replic_size);
-        return AVERROR_INVALIDDATA;
-    }
-    if (asf->packet_replic_size >= 8) {
-        int64_t end = avio_tell(pb) + asf->packet_replic_size;
-        AVRational aspect;
-        asf->packet_obj_size = avio_rl32(pb);
-        if (asf->packet_obj_size >= (1 << 24) || asf->packet_obj_size <= 0) {
-            av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
-            asf->packet_obj_size = 0;
-            return AVERROR_INVALIDDATA;
-        }
-        asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
-
-        for (i = 0; i < asfst->payload_ext_ct; i++) {
-            ASFPayload *p = &asfst->payload[i];
-            int size = p->size;
-            int64_t payend;
-            if (size == 0xFFFF)
-                size = avio_rl16(pb);
-            payend = avio_tell(pb) + size;
-            if (payend > end) {
-                av_log(s, AV_LOG_ERROR, "too long payload\n");
-                break;
-            }
-            switch (p->type) {
-            case 0x50:
-//              duration = avio_rl16(pb);
-                break;
-            case 0x54:
-                aspect.num = avio_r8(pb);
-                aspect.den = avio_r8(pb);
-                if (aspect.num > 0 && aspect.den > 0 && asf->stream_index >= 0) {
-                    s->streams[asf->stream_index]->sample_aspect_ratio = aspect;
-                }
-                break;
-            case 0x2A:
-                avio_skip(pb, 8);
-                ts0 = avio_rl64(pb);
-                ts1 = avio_rl64(pb);
-                if (ts0!= -1) asf->packet_frag_timestamp = ts0/10000;
-                else          asf->packet_frag_timestamp = AV_NOPTS_VALUE;
-                break;
-            case 0x5B:
-            case 0xB7:
-            case 0xCC:
-            case 0xC0:
-            case 0xA0:
-                //unknown
-                break;
-            }
-            avio_seek(pb, payend, SEEK_SET);
-        }
-
-        avio_seek(pb, end, SEEK_SET);
-        rsize += asf->packet_replic_size; // FIXME - check validity
-    } else if (asf->packet_replic_size == 1) {
-        // multipacket - frag_offset is beginning timestamp
-        asf->packet_time_start     = asf->packet_frag_offset;
-        asf->packet_frag_offset    = 0;
-        asf->packet_frag_timestamp = asf->packet_timestamp;
-
-        asf->packet_time_delta = avio_r8(pb);
-        rsize++;
-    } else if (asf->packet_replic_size != 0) {
-        av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n",
-               asf->packet_replic_size);
-        return AVERROR_INVALIDDATA;
-    }
-    if (asf->packet_flags & 0x01) {
-        DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
-        if (rsize > asf->packet_size_left) {
-            av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
-            return AVERROR_INVALIDDATA;
-        } else if (asf->packet_frag_size > asf->packet_size_left - rsize) {
-            if (asf->packet_frag_size > asf->packet_size_left - rsize + asf->packet_padsize) {
-                av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid (%d-%d)\n",
-                       asf->packet_size_left, rsize);
-                return AVERROR_INVALIDDATA;
-            } else {
-                int diff = asf->packet_frag_size - (asf->packet_size_left - rsize);
-                asf->packet_size_left += diff;
-                asf->packet_padsize   -= diff;
-            }
-        }
-    } else {
-        asf->packet_frag_size = asf->packet_size_left - rsize;
-    }
-    if (asf->packet_replic_size == 1) {
-        asf->packet_multi_size = asf->packet_frag_size;
-        if (asf->packet_multi_size > asf->packet_size_left)
-            return AVERROR_INVALIDDATA;
-    }
-    asf->packet_size_left -= rsize;
-
-    return 0;
-}
-
-/**
- * Parse data from individual ASF packets (which were previously loaded
- * with asf_get_packet()).
- * @param s demux context
- * @param pb context to read data from
- * @param pkt pointer to store packet data into
- * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
- *          packets need to be loaded (through asf_get_packet())
- */
-static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
-{
-    ASFContext *asf   = s->priv_data;
-    ASFStream *asf_st = 0;
-    for (;;) {
-        int ret;
-        if (url_feof(pb))
-            return AVERROR_EOF;
-
-        if (asf->packet_size_left < FRAME_HEADER_SIZE ||
-            asf->packet_segments < 1) {
-            int ret = asf->packet_size_left + asf->packet_padsize;
-
-            assert(ret >= 0);
-            /* fail safe */
-            avio_skip(pb, ret);
-
-            asf->packet_pos = avio_tell(pb);
-            if (asf->data_object_size != (uint64_t)-1 &&
-                (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
-                return AVERROR_EOF;  /* Do not exceed the size of the data object */
-            return 1;
-        }
-        if (asf->packet_time_start == 0) {
-            if (asf_read_frame_header(s, pb) < 0) {
-                asf->packet_segments = 0;
-                continue;
-            }
-            if (asf->stream_index < 0 ||
-                s->streams[asf->stream_index]->discard >= AVDISCARD_ALL ||
-                (!asf->packet_key_frame &&
-                 s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)) {
-                asf->packet_time_start = 0;
-                /* unhandled packet (should not happen) */
-                avio_skip(pb, asf->packet_frag_size);
-                asf->packet_size_left -= asf->packet_frag_size;
-                if (asf->stream_index < 0)
-                    av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n",
-                           asf->packet_frag_size);
-                continue;
-            }
-            asf->asf_st = s->streams[asf->stream_index]->priv_data;
-        }
-        asf_st = asf->asf_st;
-        av_assert0(asf_st);
-
-        if (asf->packet_replic_size == 1) {
-            // frag_offset is here used as the beginning timestamp
-            asf->packet_frag_timestamp = asf->packet_time_start;
-            asf->packet_time_start    += asf->packet_time_delta;
-            asf->packet_obj_size       = asf->packet_frag_size = avio_r8(pb);
-            asf->packet_size_left--;
-            asf->packet_multi_size--;
-            if (asf->packet_multi_size < asf->packet_obj_size) {
-                asf->packet_time_start = 0;
-                avio_skip(pb, asf->packet_multi_size);
-                asf->packet_size_left -= asf->packet_multi_size;
-                continue;
-            }
-            asf->packet_multi_size -= asf->packet_obj_size;
-        }
-        if (asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size &&
-            asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size) {
-            av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
-                   asf_st->frag_offset, asf->packet_frag_size,
-                   asf->packet_obj_size, asf_st->pkt.size);
-            asf->packet_obj_size = asf_st->pkt.size;
-        }
-
-        if (asf_st->pkt.size != asf->packet_obj_size ||
-            // FIXME is this condition sufficient?
-            asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) {
-            if (asf_st->pkt.data) {
-                av_log(s, AV_LOG_INFO,
-                       "freeing incomplete packet size %d, new %d\n",
-                       asf_st->pkt.size, asf->packet_obj_size);
-                asf_st->frag_offset = 0;
-                av_free_packet(&asf_st->pkt);
-            }
-            /* new packet */
-            av_new_packet(&asf_st->pkt, asf->packet_obj_size);
-            asf_st->seq              = asf->packet_seq;
-            asf_st->pkt.dts          = asf->packet_frag_timestamp - asf->hdr.preroll;
-            asf_st->pkt.stream_index = asf->stream_index;
-            asf_st->pkt.pos          = asf_st->packet_pos = asf->packet_pos;
-
-            if (asf_st->pkt.data && asf_st->palette_changed) {
-                uint8_t *pal;
-                pal = av_packet_new_side_data(&asf_st->pkt, AV_PKT_DATA_PALETTE,
-                                              AVPALETTE_SIZE);
-                if (!pal) {
-                    av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
-                } else {
-                    memcpy(pal, asf_st->palette, AVPALETTE_SIZE);
-                    asf_st->palette_changed = 0;
-                }
-            }
-            av_dlog(asf, "new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
-                    asf->stream_index, asf->packet_key_frame,
-                    asf_st->pkt.flags & AV_PKT_FLAG_KEY,
-                    s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO,
-                    asf->packet_obj_size);
-            if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
-                asf->packet_key_frame = 1;
-            if (asf->packet_key_frame)
-                asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
-        }
-
-        /* read data */
-        av_dlog(asf, "READ PACKET s:%d  os:%d  o:%d,%d  l:%d   DATA:%p\n",
-                s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
-                asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
-        asf->packet_size_left -= asf->packet_frag_size;
-        if (asf->packet_size_left < 0)
-            continue;
-
-        if (asf->packet_frag_offset >= asf_st->pkt.size ||
-            asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset) {
-            av_log(s, AV_LOG_ERROR,
-                   "packet fragment position invalid %u,%u not in %u\n",
-                   asf->packet_frag_offset, asf->packet_frag_size,
-                   asf_st->pkt.size);
-            continue;
-        }
-
-        ret = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
-                        asf->packet_frag_size);
-        if (ret != asf->packet_frag_size) {
-            if (ret < 0 || asf->packet_frag_offset + ret == 0)
-                return ret < 0 ? ret : AVERROR_EOF;
-
-            if (asf_st->ds_span > 1) {
-                // scrambling, we can either drop it completely or fill the remainder
-                // TODO: should we fill the whole packet instead of just the current
-                // fragment?
-                memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
-                       asf->packet_frag_size - ret);
-                ret = asf->packet_frag_size;
-            } else {
-                // no scrambling, so we can return partial packets
-                av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
-            }
-        }
-        if (s->key && s->keylen == 20)
-            ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
-                            ret);
-        asf_st->frag_offset += ret;
-        /* test if whole packet is read */
-        if (asf_st->frag_offset == asf_st->pkt.size) {
-            // workaround for macroshit radio DVR-MS files
-            if (s->streams[asf->stream_index]->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
-                asf_st->pkt.size > 100) {
-                int i;
-                for (i = 0; i < asf_st->pkt.size && !asf_st->pkt.data[i]; i++)
-                    ;
-                if (i == asf_st->pkt.size) {
-                    av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
-                    asf_st->frag_offset = 0;
-                    av_free_packet(&asf_st->pkt);
-                    continue;
-                }
-            }
-
-            /* return packet */
-            if (asf_st->ds_span > 1) {
-                if (asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span) {
-                    av_log(s, AV_LOG_ERROR,
-                           "pkt.size != ds_packet_size * ds_span (%d %d %d)\n",
-                           asf_st->pkt.size, asf_st->ds_packet_size,
-                           asf_st->ds_span);
-                } else {
-                    /* packet descrambling */
-                    AVBufferRef *buf = av_buffer_alloc(asf_st->pkt.size +
-                                                       FF_INPUT_BUFFER_PADDING_SIZE);
-                    if (buf) {
-                        uint8_t *newdata = buf->data;
-                        int offset = 0;
-                        memset(newdata + asf_st->pkt.size, 0,
-                               FF_INPUT_BUFFER_PADDING_SIZE);
-                        while (offset < asf_st->pkt.size) {
-                            int off = offset / asf_st->ds_chunk_size;
-                            int row = off / asf_st->ds_span;
-                            int col = off % asf_st->ds_span;
-                            int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
-                            assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
-                            assert(idx + 1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
-                            memcpy(newdata + offset,
-                                   asf_st->pkt.data + idx * asf_st->ds_chunk_size,
-                                   asf_st->ds_chunk_size);
-                            offset += asf_st->ds_chunk_size;
-                        }
-                        av_buffer_unref(&asf_st->pkt.buf);
-                        asf_st->pkt.buf  = buf;
-                        asf_st->pkt.data = buf->data;
-                    }
-                }
-            }
-            asf_st->frag_offset         = 0;
-            *pkt                        = asf_st->pkt;
-#if FF_API_DESTRUCT_PACKET
-            asf_st->pkt.destruct        = NULL;
-#endif
-            asf_st->pkt.buf             = 0;
-            asf_st->pkt.size            = 0;
-            asf_st->pkt.data            = 0;
-            asf_st->pkt.side_data_elems = 0;
-            asf_st->pkt.side_data       = NULL;
-            break; // packet completed
-        }
-    }
-    return 0;
-}
-
-static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
-    ASFContext *asf = s->priv_data;
-
-    for (;;) {
-        int ret;
-
-        /* parse cached packets, if any */
-        if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
-            return ret;
-        if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
-            assert(asf->packet_size_left < FRAME_HEADER_SIZE ||
-                   asf->packet_segments < 1);
-        asf->packet_time_start = 0;
-    }
-}
-
-// Added to support seeking after packets have been read
-// If information is not reset, read_packet fails due to
-// leftover information from previous reads
-static void asf_reset_header(AVFormatContext *s)
-{
-    ASFContext *asf = s->priv_data;
-    ASFStream *asf_st;
-    int i;
-
-    asf->packet_size_left      = 0;
-    asf->packet_segments       = 0;
-    asf->packet_flags          = 0;
-    asf->packet_property       = 0;
-    asf->packet_timestamp      = 0;
-    asf->packet_segsizetype    = 0;
-    asf->packet_segments       = 0;
-    asf->packet_seq            = 0;
-    asf->packet_replic_size    = 0;
-    asf->packet_key_frame      = 0;
-    asf->packet_padsize        = 0;
-    asf->packet_frag_offset    = 0;
-    asf->packet_frag_size      = 0;
-    asf->packet_frag_timestamp = 0;
-    asf->packet_multi_size     = 0;
-    asf->packet_obj_size       = 0;
-    asf->packet_time_delta     = 0;
-    asf->packet_time_start     = 0;
-
-    for (i = 0; i < s->nb_streams; i++) {
-        asf_st = s->streams[i]->priv_data;
-        if (!asf_st)
-            continue;
-        av_free_packet(&asf_st->pkt);
-        asf_st->frag_offset = 0;
-        asf_st->seq         = 0;
-    }
-    asf->asf_st = NULL;
-}
-
-static int asf_read_close(AVFormatContext *s)
-{
-    asf_reset_header(s);
-
-    return 0;
-}
-
-static int64_t asf_read_pts(AVFormatContext *s, int stream_index,
-                            int64_t *ppos, int64_t pos_limit)
-{
-    AVPacket pkt1, *pkt = &pkt1;
-    ASFStream *asf_st;
-    int64_t pts;
-    int64_t pos = *ppos;
-    int i;
-    int64_t start_pos[ASF_MAX_STREAMS];
-
-    for (i = 0; i < s->nb_streams; i++)
-        start_pos[i] = pos;
-
-    if (s->packet_size > 0)
-        pos = (pos + s->packet_size - 1 - s->data_offset) /
-              s->packet_size * s->packet_size +
-              s->data_offset;
-    *ppos = pos;
-    if (avio_seek(s->pb, pos, SEEK_SET) < 0)
-        return AV_NOPTS_VALUE;
-
-    asf_reset_header(s);
-    for (;;) {
-        if (av_read_frame(s, pkt) < 0) {
-            av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
-            return AV_NOPTS_VALUE;
-        }
-
-        pts = pkt->dts;
-
-        av_free_packet(pkt);
-        if (pkt->flags & AV_PKT_FLAG_KEY) {
-            i = pkt->stream_index;
-
-            asf_st = s->streams[i]->priv_data;
-            av_assert0(asf_st);
-
-//            assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
-            pos = asf_st->packet_pos;
-
-            av_add_index_entry(s->streams[i], pos, pts, pkt->size,
-                               pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
-            start_pos[i] = asf_st->packet_pos + 1;
-
-            if (pkt->stream_index == stream_index)
-                break;
-        }
-    }
-
-    *ppos = pos;
-    return pts;
-}
-
-static void asf_build_simple_index(AVFormatContext *s, int stream_index)
-{
-    ff_asf_guid g;
-    ASFContext *asf     = s->priv_data;
-    int64_t current_pos = avio_tell(s->pb);
-
-    if(avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET) < 0) {
-        asf->index_read= -1;
-        return;
-    }
-
-    ff_get_guid(s->pb, &g);
-
-    /* the data object can be followed by other top-level objects,
-     * skip them until the simple index object is reached */
-    while (ff_guidcmp(&g, &ff_asf_simple_index_header)) {
-        int64_t gsize = avio_rl64(s->pb);
-        if (gsize < 24 || url_feof(s->pb)) {
-            avio_seek(s->pb, current_pos, SEEK_SET);
-            asf->index_read= -1;
-            return;
-        }
-        avio_skip(s->pb, gsize - 24);
-        ff_get_guid(s->pb, &g);
-    }
-
-    {
-        int64_t itime, last_pos = -1;
-        int pct, ict;
-        int i;
-        int64_t av_unused gsize = avio_rl64(s->pb);
-        ff_get_guid(s->pb, &g);
-        itime = avio_rl64(s->pb);
-        pct   = avio_rl32(s->pb);
-        ict   = avio_rl32(s->pb);
-        av_log(s, AV_LOG_DEBUG,
-               "itime:0x%"PRIx64", pct:%d, ict:%d\n", itime, pct, ict);
-
-        for (i = 0; i < ict; i++) {
-            int pktnum        = avio_rl32(s->pb);
-            int pktct         = avio_rl16(s->pb);
-            int64_t pos       = s->data_offset + s->packet_size * (int64_t)pktnum;
-            int64_t index_pts = FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
-
-            if (pos != last_pos) {
-                av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d  pts: %"PRId64"\n",
-                       pktnum, pktct, index_pts);
-                av_add_index_entry(s->streams[stream_index], pos, index_pts,
-                                   s->packet_size, 0, AVINDEX_KEYFRAME);
-                last_pos = pos;
-            }
-        }
-        asf->index_read = ict > 1;
-    }
-    avio_seek(s->pb, current_pos, SEEK_SET);
-}
-
-static int asf_read_seek(AVFormatContext *s, int stream_index,
-                         int64_t pts, int flags)
-{
-    ASFContext *asf = s->priv_data;
-    AVStream *st    = s->streams[stream_index];
-
-    if (s->packet_size <= 0)
-        return -1;
-
-    /* Try using the protocol's read_seek if available */
-    if (s->pb) {
-        int ret = avio_seek_time(s->pb, stream_index, pts, flags);
-        if (ret >= 0)
-            asf_reset_header(s);
-        if (ret != AVERROR(ENOSYS))
-            return ret;
-    }
-
-    if (!asf->index_read)
-        asf_build_simple_index(s, stream_index);
-
-    if ((asf->index_read > 0 && st->index_entries)) {
-        int index = av_index_search_timestamp(st, pts, flags);
-        if (index >= 0) {
-            /* find the position */
-            uint64_t pos = st->index_entries[index].pos;
-
-            /* do the seek */
-            av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
-            if(avio_seek(s->pb, pos, SEEK_SET) < 0)
-                return -1;
-            asf_reset_header(s);
-            return 0;
-        }
-    }
-    /* no index or seeking by index failed */
-    if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
-        return -1;
-    asf_reset_header(s);
-    return 0;
-}
-
-AVInputFormat ff_asf_demuxer = {
-    .name           = "asf",
-    .long_name      = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
-    .priv_data_size = sizeof(ASFContext),
-    .read_probe     = asf_probe,
-    .read_header    = asf_read_header,
-    .read_packet    = asf_read_packet,
-    .read_close     = asf_read_close,
-    .read_seek      = asf_read_seek,
-    .read_timestamp = asf_read_pts,
-    .flags          = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,
-    .priv_class     = &asf_class,
-};